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Anatomy of a Victory – SAMAA TV

By: Omair Alavi

Pakistan may have won the first T20 against World Champions West Indies in Barbados but the victory was far from a convincing one; the team went out with a mixture of old and new players and sadly, it was the new ones who made the difference. Lets take a look at The Good, The Bad and The Ugly performers of the match and hope that either the bad ones get dropped or improve in the next outing.

The Good

Shadab Khan came, he bowled and conquered. The leg spinner made his T20 debut memorable by taking as many as 3 wickets for just 7 runs which is the most economical figures, ever for a newbie. He was rightly used as an attacking bowler by Sarfraz Ahmed who won his 5th consecutive match in charge. Due to Shadabs brilliant spell combined with excellent captaincy, Pakistan managed to restrict the hosts for just 111. It took a gutsy innings from Babar Azam to rescue Pakistan from a familiar collapse and his 29 off 30 proved to be one of the reasons the greenshirts came out victorious.

The Bad

Kamran Akmal once again proved that he is one of the worst fielders in the world with or without gloves. Yes, he did provide the explosive start but that doesnt mean that one can forget the blunder in the field. His opening partner Ahmed Shehzad also told the selectors that their confidence in his abilities was short-lived as he did what he always does nothing exceptional with the bat. He may be a wonderful fielder and for that, he might play as a 12th man, one who doesnt burden the team with his irresponsible batting at the top!

The Ugly

Once upon a time there was a fast bowler named Wahab Riaz who bowled a wonderful spell against Australia in the last World Cup, 2 years back. He has been playing in the side for that one performance and its about time that he should make way for young guns that actually fire and take wickets, not just donate runs. His 4 overs went for 35 runs and helped the West Indians more than the Pakistan side. Another player who proved to be useless in the final XI was former captain Mohammad Hafeez who bowled one over and scored 5 runs off 12 deliveries which is criminal if you do that in a T20. If he cant bowl, cant bat and cant field, then why is he in the team beats me. It is time that non-utility players like him are shown the door and young ones are included, because the young are the way forward for Pakistan, not the old ones!

Story first published: 27th March 2017

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Anatomy of a Victory - SAMAA TV

Anatomy and physiology of ageing 3: the digestive system – Nursing Times

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Yamni Nigam is an associate professor of biomedical science; John Knight is a senior lecturer in biomedical science; both at the College of Human Health and Science, Swansea University.

Ageing can have drastic effects on the functions of the digestive system. One of these is reduced appetite due to changes in hormone production and analteration in smell and taste. Physiological changes in pharyngeal skills and oesophageal motility may lead to dysphagia and reflux. In the intestines, several factors contribute tochanges in the regular gut microbial fauna, making older people more prone to bloating, pain and bacterial infection. There is also a drastic age-associated rise in the incidence of several gut pathologies including cancer of the colon. This third article in our series on the anatomy and physiology of ageing explores the digestive system.

Nigam Y, Knight J (2017) Anatomy and physiology of ageing 3: the digestive system. Nursing Times [online]; 113: 4, 54-57.

The main role of the digestive system is to mechanically and chemically break down food into simple components that can be absorbed and assimilated by the body. The gut and accessory organs also play an important role in the elimination of indigestible food components, bile pigments, toxins and excess salts. The system performs a range of anatomically and physiologically distinct functions, each of which is affected differently by ageing (Fig 1).

2

Fig 1. Age-related changes to the gastrointestinal tract

Food intake diminishes with age due to a range of complex reasons that lead to reduced appetite. These include physiological changes and changes in psychosocial and pharmacological circumstances.

Appetite is controlled mainly by sensors in the gastrointestinal tract, which detect the physical presence of food and prompt the GI tract to produce a range of hormones. These are released before, during and after eating, and control eating behaviours, including the amount consumed. They include:

Table 1 highlights the changes that occur in the production of these hormones with advancing age; the overall result is reduced appetite.

ta

Table 1. Age-related changes in appetite hormones

We choose what we eat based on the smell and taste of food; however, the number of olfactory receptors decreases with age and the sense of smell diminishes. US research suggests that about half of people aged 65-80 and around three-quarters of those aged over 80years have a demonstrable loss of smell (Doty and Kamath, 2014).

This decreased sense of smell can have significant safety implications; for example, a disproportionately high number of older people die from accidental gas poisoning. It can also be an early sign of neurodegenerative disorders such as Parkinsons or Alzheimers disease (Httenbrink et al, 2013). Olfactory loss including loss of the ability to discriminate between smells may also be a consequence of age-related skull bone growth that results in a pinching of sensory nerve fibres.

Most older people experience regional taste deficits in the mouth. However, what is perceived as a taste defect (gustatory dysfunction) is often a primary defect in olfaction although some studies suggest that age-related changes in the taste cell membranes diminish the sense of taste (Seiberling and Conley, 2004).

The gradual reduction in smell and taste, and therefore in appetite, leads to diminished food intake, possibly resulting in weight loss and malnutrition, while the inability to taste and enjoy food can lead to anxiety. The ability to taste salt also diminishes (Mauk, 2010) and may lead to increased consumption of salt-rich meals, which can aggravate health conditions such as hypertension. Older people should be encouraged to use herbs or mild spices in their dishes, rather than salt, if they need to add flavour.

The lips, tongue, salivary glands and teeth all play a role in chewing, breaking down and swallowing food. Age-related shrinkage of the maxillary and mandibular bones and reduction in bone calcium content cause a slow erosion of the tooth sockets, leading to gum recession and an increased risk of root decay (Pradeep et al, 2012). People without teeth (edentulous) or who have poorly fitting dentures may find chewing difficult and, therefore, eat less and become malnourished. Alternatively, they may choose highly refined, easy-to-chew foods, thereby consuming less dietary fibre; this will affect their bowel function, and may cause problems such as constipation.

A dry mouth (xerostomia) is common among older people; Smith et al (2013) showed that healthy subjects aged 70years and over produced less saliva than younger people. However, while the number of tongue acinar (saliva-producing) cells decreases with age, there is conflicting evidence as to whether the volume of saliva produced also decreases. Xerostomia can be an adverse effect of medication or can result from diseases such as diabetes. Although it is common among older people generally, it is more likely to occur in those who are taking more than four prescription drugs per day (Yellowitz and Schneiderman, 2014). Drug categories that may cause xerostomia include:

Having formed a bolus of food, the mouth prepares to swallow. The bolus reaches the posterior pharyngeal wall and the musculature contracts around it; swallowing occurs and food travels through the upper oesophageal sphincter into the oesophagus. With age, the muscular contractions that initiate swallowing slow down, increasing pharyngeal transit time (Nikhil et al, 2014). This may lead to swallowing difficulties (dysphagia), which can increase the risk of choking and the feeling that food is stuck in the throat. Up to 26.7% of people aged 76years and over experience dysphagia (Baijens et al, 2016).

In general, the motor function of the GI tract is relatively well preserved in healthy older people, but there are significant changes in oropharyngeal and oesophageal motility. In the very old, impaired oesophageal motility is common; oesophageal peristalsis weakens with age (Gutschow et al, 2011) and peristalsis may no longer be triggered by each swallow. Both upper and lower oesophageal sphincters lose tension; the lower one in particular undergoes a reduction in pressure, resulting in problems such as dysphagia, reflux and heartburn (Grassi et al, 2011). In addition, the gag reflex is absent in 43% of older people (Davies et al, 1995).

The stomach acts as a reservoir for food, allowing us to eat at regular intervals. With age, it cannot accommodate as much food, primarily because its wall loses elasticity.

As a normal part of digestion, the stomach secretes gastric juice containing hydrochloric acid and pepsin. Although, in general, older and younger people produce gastric acid at a similar rate (Merchant et al, 2016), acid hyposecretion occurs in 10-20% of older people versus <1% of younger subjects (Gidal, 2007). This can compromise the bioavailability of certain drugs, including vitamin B12, and lead to disorders such as chronic atrophic gastritis.

There is also an age-related reduction in mucus-producing goblet cells, which results in reduced secretion of protective mucus and therefore a weakened mucosal barrier. Consequently the stomachs lining becomes more prone to damage (Saber and Bayumi, 2016).

Gastric bicarbonate (HCO3-) and mucus normally provide an alkaline layer to defend the stomach lining against gastric juices; however, research suggests that advancing age is associated with a decline in HCO3- secretion (Saber and Bayumi, 2016). The protective prostaglandin content of mucus also decreases with age, making older people more prone to gastromucosal injury such as lesions and ulcers, especially after ingesting non-steroidal anti-inflammatory drugs, which are commonly taken by older people. However, proton pump inhibitors (PPIs), which suppress acid production, are often prescribed alongside NSAIDs (Fujimori, 2015).

Finally, gastric emptying slows down with age; this means food remains in the stomach for longer, prolonging satiation and reducing appetite (Nieuwenhuizen et al, 2010).

The main function of the small intestine is to digest and absorb food. It produces a range of digestive enzymes, supported by the pancreas and liver.

Absorption of nutrients occurs in the jejunum and ileum, the second and third regions of the small intestine. The lining of the small intestine is shaped into microscopic folds (villi), which increase the surface area available for absorption. Although an age-related reduction in villus height has been shown, the impact on nutrient uptake does not seem to be clinically significant (Drozdowski and Thomson, 2006).

There is evidence that the production of the enzyme lactase decreases with age, making older people more prone to lactose intolerance (Di Stefano et al, 2001); lactase is created following instruction fromthe LCT gene, which becomes less active over time.

Populations of certain bacteria that reside in the small intestine have been shown to increase as we age, leading to bloating, pain and decreased absorption of nutrients such as calcium, folic acid and iron. This can have a negative effect on health. In addition, PPIs have been shown to provoke bacterial overgrowth in the small intestine, which may exacerbate NSAID-induced small intestinal injury and foster the development of systemic conditions, including inflammatory bowel disease, diabetes and autoimmune diseases (Fujimori, 2015).

Peyers patches small nodules of lymphatic tissue that form part of the guts immune defence system monitor populations of intestinal bacteria to prevent the growth of pathogens. However, there is a gradual reduction in the number of Peyers patches in the small intestine, accompanied by a gradual loss of lymphoid follicles (Merchant et al, 2016); this can result in an uncontrolled growth of resident micro-flora.

As already mentioned, oesophageal peristalsis slows with age, but research has recently shown that small intestinal transit time does not seem to be affected (Fischer and Fadda, 2016). In contrast, there is an age-related slowing down of colonic transit caused by a decline in propulsive activity of the colon, whichis associated with a reduction in neurotransmitters and neuroreceptors (Britton and McLaughlin, 2013). This causes a delay in colonic transit of waste, leading to constipation (Wiskur and Greenwood-Van Meerveld, 2010).

Peristalsis is also affected by the age-related atrophy of the mucosa and muscle layers of the colon. The walls of the colon sag, prompting the formation of pouches (diverticuli). Straining to eliminate faeces may put additional pressure on weakened blood vessel walls, giving rise to haemorrhoids.

The rate of cell division declines in the digestive epithelium, which cannot repair and replace itself as well as it needs to. There is also a drastic age-associated rise in the incidence of several gut pathologies including cancer of the colon in fact, age is the key risk factor for colorectal cancer. Recent studies indicate that ageing induces changes in the DNA of epithelial intestinal cells, particularly in the colon; this process known as DNA methylation is believed to play a significant part in the development of colorectal cancers (Masoro and Austad, 2010).

Changes in the populations of gut microbes lead to an increase in facultative anaerobes including streptococcus, staphylococcus, enterococcus and enterobacteriaceae which are able to thrive in inflamed conditions (Pdron and Sansonetti, 2008). The ageing process mimics the intestinal microbe profile that accompanies inflammatory bowel diseases and obesity (Neish, 2009).

The commensal microorganisms inhabiting the lumen of the colon are prevented from entering surrounding tissues by a single layer of epithelial cells that form an impermeable mucosal barrier. This barrier becomes leaky with age (Mabbott, 2015). As the barrier function of the mucosal immune system is impaired, the incidence of GI pathogen infections is higher and is a major cause of morbidity and mortality in older people (Mabbott et al, 2015). This group is also at increased risk of infection with Clostridium difficile, which causes a potentially fatal dehydrating diarrhoea for which the two major risk factors are age of 65years and exposure to antimicrobials (Jump, 2013).

With age, the pancreas, which generates four major digestive enzymes, decreases in weight and some of its tissue undergoes fibrosis. Its exocrine function is impaired and the secretion of chymotrypsin and pancreatic lipase reduced (Laugier et al, 1991), adversely affecting the ability of the small intestine to digest food.

The liver undertakes more than 114 functions for the body; as it shrinks with age and blood flow to it decreases, its functional capacity also decreases (Drozdowski and Thomson, 2006). There is a decrease in the rate of protein synthesis and of metabolism, the livers ability to detoxify many substances, as well as the production and flow of bile (involved in fat emulsification). In addition, bile becomes thicker and its salt content diminishes, resulting in higher plasma concentrations of cholesterol, particularly in women (Frommherz et al, 2016). Drugs are no longer inactivated quickly by the liver and are therefore more likely to cause dose-related side-effects: dosages therefore need to be carefully checked when prescribing for older people.

Baijens LW et al (2016) European Society for Swallowing Disorders European Union Geriatric Medicine Society white paper: oropharyngeal dysphagia as a geriatric syndrome. Journal of Clinical Interventions in Ageing; 11: 1403-1428.

Britton E, McLaughlin JT (2013) Ageing and the gut. The Proceedings of the Nutrition Society; 72: 1, 173-177.

Davies AE et al (1995) Pharyngeal sensation and gag reflex in healthy subjects. Lancet; 345: 8948, 487-488.

de Boer A et al (2012) Physiological and psychosocial age-related changes associated with reduced food intake in older persons. Ageing Research Reviews; 12: 1, 316-328.

de Boer A et al (2013) Physiological and psychosocial age-related changes associated with reduced food intake in older persons. Ageing Research Reviews; 12: 1, 316-328.

Di Francesco V et al (2008) Effect of age on the dynamics of acylated ghrelin in fasting conditions and in response to a meal. Journal of the American Geriatrics Society; 56: 7, 1369-1370.

Di Stefano M et al (2001) Lactose malabsorption and intolerance in the elderly. Scandinavian Journal of Gastroenterology; 36: 12, 1274-1278.

Doty RL, Kamath V (2014) The influences of age on olfaction: a review. Frontiers in Psychology; 5: 20.

Drozdowski L, Thomson ABR (2006) Aging and the intestine. World Journal of Gastroenterology; 12: 47, 7578-7584.

Fischer M, Fadda HM (2016) The effect of sex and age on small intestinal transit times in humans. Journal of Pharmaceutical Sciences; 105: 2, 682-686.

Frommherz L et al (2016) Age-related changes of plasma bile acid concentrations in healthy adults results from the cross-sectional KarMeN study. PLoS One; 11: 4, e0153959.

Fujimori S (2015) What are the effects of proton pump inhibitors on the small intestine? World Journal of Gastroenterology; 21: 22, 6817-6819.

Gidal BE (2007) Antiepileptic drug formulation and treatment in the elderly: biopharmaceutical considerations. International Review of Neurobiology; 81: 299-311.

Gong Z, Muzumdar RH (2012) Pancreaticfunction, type 2 diabetes, and metabolism in aging. International Journal of Endocrinology; 2012: 320482.

Grassi M et al (2011) Changes, functional disorders, and diseases in the gastrointestinal tract of elderly. Nutricin Hospitalaria; 26: 4, 659-668.

Gutschow CA et al (2011) Effect of aging on esophageal motility in patients with and without GERD. German Medical Science; 9: doc 22.

Hickson M et al (2016) Increased peptide YY blood concentrations, not decreased acyl-ghrelin, are associated with reduced hunger and food intake in healthy older women: preliminary evidence. Appetite; 105: 320-327.

Httenbrink KB et al (2013) Olfactory dysfunction: common in later life and early warning of neurodegenerative disease. Deutsches rzteblatt International; 110: 1-2, 1-7.

Jump RLP (2013) Clostridium difficile infection in older adults. Aging Health; 9: 4, 403-414.

Laugier R et al (1991) Changes in pancreatic exocrine secretion with age: pancreatic exocrine secretion does decrease in the elderly. Digestion; 50: 3-4, 202-211.

Mabbott NA (2015) A breakdown in communication? Understanding the effects of aging on the human small intestine epithelium. Clinical Science; 129: 7, 529-531.

Mabbott NA et al (2015) Aging and the mucosal immune system in the intestine. Biogerontology; 16: 2, 133-145.

Masoro EJ, Austad SN (2010) Handbook of the Biology of Aging. Burlington, MA: Academic Press.

Mauk KL (2010) Gerontological Nursing: Competencies for Care. London: Jones and Bartlett Publishers.

Merchant HA et al (2016) Age-mediated changes in the gastrointestinal tract. International Journal of Pharmaceutics; 512: 2, 382-395.

Neish AS (2009) Microbes in gastrointestinal health and disease. Gastroenterology; 136: 1, 65-80.

Nieuwenhuizen WF et al (2010) Older adults and patients in need of nutritional support: review of current treatment options and factors influencing nutritional intake. Clinical Nutrition; 29: 2, 160-169.

Nikhil J et al (2014) Oral and pharyngeal transit time as a factor of age, gender, and consistency of liquid bolus. Journal of Laryngology and Voice; 4: 2, 45-52.

Pdron T, Sansonetti P (2008) Commensals, bacterial pathogens and intestinal inflammation: an intriguing mnage trois. Cell Host and Microbe; 3: 6, 344-347.

Pilgrim A et al (2015) An overview of appetite decline in older people. Nursing Older People; 27: 5, 29-35.

Pradeep K et al (2012) Gingival recession: review and strategies in treatment of recession. Case Reports in Dentistry; 2012: 563421.

Saber A, Bayumi EK (2016) Age-related gastric changes. Journal of Surgery; 4: 2-1, 20-26.

Seiberling KA, Conley DB (2004) Aging and olfactory and taste function. Otolaryngologic Clinics of North America; 37: 6, 1209-1228.

Smith CH et al (2013) Effect of aging on stimulated salivary flow in adults. Journal of the American Geriatrics Society; 61: 5, 805-808.

Wiskur B, Greenwood-Van Meerveld B (2010) The aging colon: the role of enteric neurodegeneration in constipation. Current Gastroenterology Reports; 12: 6, 507-512.

Yellowitz JA, Schneiderman MT (2014) Elders oral health crisis. Journal of Evidence-Based Dental Practice; 14(Suppl): 191-200.

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Anatomy and physiology of ageing 3: the digestive system - Nursing Times

Nuke the Internet From Orbit? – Washington Free Beacon

A computer gamer in Osnabrueck, Germany. / Getty Images

BY: Jack Butler March 26, 2017 4:50 am

What if the Internet shut down?

The Internet is so enmeshed in modern life that such a question seems unthinkable, an apocalyptic disaster of the sort reserved for fiction, such as E.M. Forster's startlingly prescient 1909 short story"The Machine Stops." But at the end of February, huge swaths of the Internet went dark due to problems with Amazon's servers. (The cause was a typo.) A similar outage occurred last October. That time, though, it wasn't accidental. The culprit was a distributed denial of service (DDoS) attack on key aspects of the Internet's infrastructure. The attackflooded vitalwebsites and services with requests, amplifying itself through loosely secured, Internet-connected devices. Such devices, includinghousehold fixtures like wireless printers and DVD players, are known collectively as the "Internet of things."

Mary Aiken's The Cyber Effect: A Pioneering Cyberpsychologist Explains How Human Behavior Changes Online deals only tangentially with such threats to the Internet. But, after reading it, one is tempted to hope that an attacksucceeds in bringing the whole thing down.

Aiken didn't set out to make the case for nuking the Internet from orbit. Her goal was rather to dissent from typical tech reporting, which breathlessly focuses on the relentless pace of change or submits paeans to Silicon Valley. Instead, she observes dispassionately how the Internet, smartphones, and related items affect us. As Aiken somewhat clumsily notes, "[w]e are living through a unique period of human history, an intense period of flux, change, and disruption that may never be repeated." At the same time, she submits another awkward, obvious, but important message: "What is new is not always goodand technology does not always mean progress."

Aiken struggles through parts of the book to convey her thesis. Virtually every page bears a trite phrase (beginning with the JFK-quoting epigraph "Children are the world's most valuable resource and its best hope for the future"), some meaningless filler (the first words of the book proper are "I am sitting on a cold, hard bench"), or a pointless rhetorical question (my favorite was "where am I going with this?"). Aiken could have used a better editor.

Moreover, the authorhas a curious habit of explaining or discovering the obvious. Is it really that surprising to learn that "people behave differently when they are interacting with technology than they do in the face-to-face real world"? Is anyone shocked to find that "the more you mention something, the more you normalize it"? Did she really need to define "content analysis" and "logic" for readers?

Yet the importance of Aiken's message inclines me to forgive these faults. The meat of the book isdata and anecdotes about technology's effects, and she is at her best simply conveying these. Aiken rightly notes that "[t]he impact of technology on human behavior begins at birth and ends at death," and providesplenty of striking examples to show how technology may be deforming human behavior.

There's what Aiken calls "online syndication," or the way the Internet has allowed all sorts of warped individuals to organize aroundtheir fetishes and festering ideas. There are the video game addicts who have literally played themselves to death, and the ever-growing cohort of mostly young males who may not be literally dying but who are increasingly checking out of the real world for the more reliable stimulants of video games and pornography. Aiken cites psychologist Philip Zimbardo's claim that the average boy watches 50 pornographic videos a week, and will have played ten thousand hours of video games by age 21.

And then there are today's infants and children, the first generation raised entirely in a digitally saturated world. As Aiken notes, we will not know how staring at screens for hours from birth will affect the neurological development of today's children,or how social media will affect the self-image of today's teenagers who have spent their entire lives cultivating themselves forit, until it's too late. Don't forget the children harassed in online game worlds or lured into prostitution; horror stories of this kindmay convince you of the need fora separate Internet just for kids, an idea Aiken endorses. These and countless other examples, drawn from headlines and psychological literature, enliven the book, and nearly suffice as expiation for other faults.

The Cyber Effect may not be the world's best-written book, but Aiken has performed an invaluable service by producing it. We desperately need pushback against the tech-addled mores of our time, which encroachon us seemingly from every direction, at every stage of our lives. The Internet has given us many great things, and it would probably be a bad thing on the whole if one of these cyber attacks does take it out. Nevertheless, we still must pay attention to the work of Aiken and others, consider the questions they raise, and try our best to resist the Internet.

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Nuke the Internet From Orbit? - Washington Free Beacon

Contagious yawning, laughing and scratching gives clues to how the human brain works – KBIA

In 1962, a strange epidemic swept through several communities in Tanganyika, present-day Tanzania. It wasnt a virus, but laughter among teenage schoolgirls. The contagious laughter, which lasted for about two and a half years, afflicted about 1,000 people and forced at least 14 schools to temporarily shut down.

Experts later determined that the origin of the epidemic was psychological, perhaps related to stress caused by the presence of British colonialism. But such events have raised scientific questions about why humans cant control behaviors such as laughing, yawning, coughing and shivering and why they spread among groups of people.

We are a part of a human herd whose behavior is often the involuntary playing out of an ancient neurological script that is so familiar that it goes unnoticed, wrote neuroscientist Robert Provine in his book, "Curious Behavior."

Consider what is really happening when your body is hijacked by an observed yawn or you spontaneously join others in a communal chorus of ha-ha-ha," Provine wrote. "You dont decide to yawn or laugh contagiously. It just happens.

Provinediscovered that people are 30 times more likely to laugh around others than alone. To date, there has been much research thats observed socially contagious behaviors in humans and animals, but scientists are just starting to look into what makes them ripple through groups of people.

Empathy may not have much to do with it

Many studies have suggested that empathy could explain contagious yawning. A study published a year ago, for example, indicated that women are more susceptible to catch yawns than men. Researchers also noted that women score higher on empathy tests, and thought the two might be associated.

Another study published in 2008 found that dogs may yawn in response to their owners, but not to strangers or other dogs. Researchers wrote that because dogs are incredibly skilled at reading human cues and generally have unique social interactions with people, there is the potential that dogs may also have developed the capacity for empathy towards humans, and may catch human yawns.

Other studies, however, suggest that empathy is less significant in contagious behaviors than we might think. A paper in 2014 published by Duke University researchers, for example, analyzed various factors that influenced yawning among more than 300 human volunteers. Scientists considered a number of influencers such as empathy, energy levels and age. They saw that contagious yawning decreased among older people.

In our study, there was a connection between contagious yawning and empathy, but it was explained by a stronger connection between contagious yawning and age, said Elizabeth Cirulli, a geneticist at Duke University and an author of that paper.

Other research also showed that young children arent likely to catch yawns from other people, either.

Itch researchers at Washington University believe empathy has very little to do with such behaviors. This month, they published a study in the journal Science that showed that mice will scratch themselves in response to seeing videos of other mice that have chronic itch problems.

At the beginning, this [experiment] may sound like a crazy idea because, as you know, mice are nocturnal. They have very poor vision, said Zhou-Feng Chen, director for the schools Center for the Study of Itch.

Chen and his colleagues examined the brains of the non-itchy mice in the study and found that a specific

region, called the suprachiasmatic nucleus, released a chemical thats been known to signal when theres an itch that needs to be scratched.

Basically, our study shows those kinds of contagious behaviors are instinctive behaviors and are hardwired into our neurocircuitry, Chen said.

However, more research is needed to understand exactly how involved the brain is when we uncontrollably copy each others behaviors. As Cirulli noted, other factors need to be examined. Empathy, she said, shouldnt be ruled out, but is likely just as connected to such behaviors as height is to weight.

I dont think empathy is totally unrelated, Cirulli said. Its just that its absolutely not everything thats going on with contagious yawning. In some cases, its a proxy for something else.

We behave like the pack to survive

In the animal kingdom, one principle that prevails is strength in numbers. Snow geese, for example, will fly in groups as large as 5,000. A pack of zebras will whine loudly when they detect a predator nearby.

Some scientists believe that humans evolved to uncontrollably copy others behavior, as a means of communicating important information.

You can imagine millions of years ago when animals lived widely and maybe living in places where there are parasites," Chen said. "If all the animals begin to scratch, it could mean the area that theyre in may be dangerous.

He further speculated that as scratching became a regular way to alarm others that they needed to leave certain environments, its possible that the behavior became innate and written into our genetics over time.

From an evolutionary point of view, contagious behaviors actually help animals to better survive because you dont have to learn everything from scratch, Chen said.

How the brain works

While it might seem frivolous to study why we catch yawns and participate in other kinds of unconsciously provoked micmicry, the research could provide fundamental insight into how our brains work and develop. For instance, a 2009 study by University of Zurich researchers showed that contagious yawning and laughing happened much less frequently with people who have schizophrenia. Yawning also spread much less among people with autism.

Such findings still need further research to be understood. However, its promising that contagious scratching is observed among mice, for example, since theyre often used as experimental subjects to understand brain diseases.

Reflecting on her contagious yawning study, Cirulli mused that it would be interesting to study how genetics might influence a persons susceptibility to this behavior and how that might be connected to neurological conditions.

Because big genetic studies have been done on schizophrenia and autism and other diseases, you can calculate someones risks of developing those diseases from their genetic information and you can see if its associated with contagious yawning, she said.

Follow Eli Chen on Twitter:@StoriesByEli

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Contagious yawning, laughing and scratching gives clues to how the human brain works - KBIA

‘Will my partner be violent after I leave?’ – Sentinel-Standard

How to predict violence after leaving an abuser

We know that leaving is the most dangerous time for a domestic violence survivor. Abusers often lash out in an attempt to regain control over their partner or may resort to extreme violence, even homicide, because they feel they have nothing left to lose. But not all abusers escalate violence when the survivor leaves. So how do you know if your abuser will?

There are plenty of stories in which an abuser becomes violent after the survivor decides to end the relationship, even though no physical abuse was present while they were together. Survivor Audrey Mabrey has one such story she told DomesticShelters her husband became violent for the first time only after they became estranged.

For the most part, though, examining your partners behavior during the relationship will give you the best clues as to how he will act once you leave.

Danger Ahead Red Flags to Watch For

Human behavior is one of the hardest things to predict, says Melanie Carlson, MSW, a former shelter advocate and case manager who is currently working on her Ph.D. in gender-based violence. Still, past behavior is the most predictive of future behavior. There are often clear patterns in behavior.

Domestic violence has a high rate of recidivism, meaning if it happens once, its likely to happen again. A Bureau of Justice survey found that women ages 35 to 49 who reported an incident of intimate partner abuse had previously been abused by the same partner.

If your partner was physically abusive during the relationship, he or she may continue to be physically abusive after the relationship ends. And if the physical violence escalated during the relationship, it is best to assume it may continue to escalate after leaving. There are other red flags to look out for, too, Carlson says.

If there was physical abuse while pregnant or in public, strangulation, threats with a weapon or statements like, If you leave, Ill kill myself, use extreme caution when leaving, she says. Those kinds of behaviors show theyre really not concerned with consequences.

Access to weapons is another predictor of intimate partner homicide, particularly intimate partner femicide, or the murder of a woman. A womans chance of being murdered by her abuser increases by 500 percent if a gun is present in the home.

Abusive partners with any military or police trainingthat makes the situation more dangerous because of their access to weapons and being more effective at doing max physical harm, Carlson says.

Dont Ignore Nonphysical Warning Signs

Of course, abusers may resort to violence once the relationship ends even if they werent physically abusive during the relationship. Carlson recommends taking caution when leaving a relationship if your partner showed any signs of controlling behavior, including financial abuse, sexual coercion, isolating you from loved ones, verbal abuse and gaslighting.

If youre dealing with any of this, its best to talk to someone who has expertise in safety planning and the resources to get you the help you need, Carlson says. Call a hotline or reach out to a shelter to talk to someone who can coach you through all the mechanisms you can use to leave safely.

Thinking about leaving but scared of what your partner might do? Read Leave Without Dying (bit.ly/2oaNbmW) for tips on what to think about when it comes to getting out safely.

Relief After Violent Encounter - Ionia/ Montcalm, Inc. (RAVE) offers free and confidential services to survivors of domestic and sexual violence in Ionia and Montcalm counties. For more information, visit http://www.raveim.org. If you are a victim of domestic violence or sexual assault, call RAVEs 24-hour crisis and support line at 1-800- 720-7233.

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'Will my partner be violent after I leave?' - Sentinel-Standard

From The Other Side: The Anatomy of Brooklyn’s Blowout Loss in Washington – Truth About It – Washington Wizards Blog (blog)

Truth About It is a blog that primarily focuses on all things Washington Wizards. We have media credentials and that access allows for up-close coverage of games, practices, and other activities, irreverent and otherwise. But occasionally we use that access to explore whats going on with the opposing team. We call this segment, From The Other Side,and in todays installment,@rashad20focuses on the visiting Brooklyn Nets.

On Thursday night, while the Washington Wizards rested, the Brooklyn Nets defeated the Phoenix Suns, 126-98.That win allowed the Nets to achieve three significantseason milestones: Their largest win (28 points), their first win streak (two), and the first time in franchise history they had six bench players score in double figures.

Brooklyntrailed Phoenixby 10 points after the first quarter, then head coach Kenny Atkinson called timeout to yell, scream and throw a clipboard to emphatically implore his team to play with passion and a bit more effort. The Nets responded by outscoring the Suns 104 to 66 the remainder of the game. Message received.

After the game, Atkinson had a choice: Do we travel south to Washington, D.C., arrive late, have a shootaround in the morning, and takethe traditional path NBA teams follow when they have back-to-back games; or do we sleep in our own beds, wake up early, and travel to D.C. on the day of the game? He chose the latter.

Six minutes into their tilt against the Wizards, Atkinsons travel decision appeared to be a stroke of genius. The Nets led 11-4 on the road, mainly thanksto five quick points by Jeremy Lin and careless decisions by John Wall (who, battling the effects of a migraine headache, was questionable to play entering the game) and Markieff Morris. But just as Atkinson had called timeout the previous night to stop his teams substandard effort on both ends of the floor, Wizards coach Scott Brooks did the same thing in an effort to reel in his team in and it worked. The Wizards went on a 27-11 run, and they led 31-22 once the first quarter ended. The Nets never got closerthan nine points the remainder of the game.

Washington outscored Brooklyn32-20 in the second quarter to extend their lead to 21 points. The Nets came out of halftime playing inspired ball and cut the lead to 14 points with 5:23 left in the third quarter, but the Wizards, as theyve been doing intermittently the past month or so, pulled out just enough offensive magic to keep a comfortable lead throughout the third quarter. The Nets ended up losing by 21 points to the Wizards, who clinched a playoff berth.

Prior to his postgame presser, Atkinson had plenty of excuses at his disposal as to why his team lost so badly to the Wizards. He could have blamed the timing of his travel between cities, the difficulties of playing the second night of a back-to-back, the talent disparity between his team and the opponent, or he could simply look inward and blame the loss on the substandard job of the coaching staff. He chose all of the above.

First, he highlightedthe ability of the Wizards bigs (Marcin Gortat, Jason Smith, Markieff Morris, and Ian Mahinmi) to guard their perimeter defenders, then the lack of energy of his team on the second night of a back-to-back, and finally the paltry performance of his bench (57 points), which was far short of the 81 points they scoredthe prior night against Phoenix.

Next, Coach Atkinson decided to contrast the performance of hisbench with the suddenly prolific Wizards bench, as well as criticizing the timid play of his offense. Washingtonsbench, which was justifiably criticized early in the season, has been injected with an energy boost of sorts, thanks toformer Brooklyn Net Bojan Bogdanovic and former New York Knick Brandon Jennings. The Wizards bench accounted for 70 of their129 points, and Bogdanovic and Jennings accrued 35 of those bench points. Jennings, who had nine assists to go with his 18 points his highest total as a Wizard played a sizable role his teams success by pushing the pace John Wall initially set and making the Nets uncomfortable. Coach Atkinson had no problems discussing how flummoxed this made his team.

Amember of the Nets media asked Atkinson point blank if the decision to travel on the same day was a justifiable scapegoat for such a lopsided loss. Based on the laws of coachspeak, it would have been perfectly understandable for Atkinson to roll out the thats no excuse, all NBA teams put their pants on one leg at a time platitudes. When Nets forward Rondae Hollis-Jefferson was asked about the same day travel, he said that it didnt matter and all NBA teams face adversity. Coach Atkinson was a bit more reflective with his comments:

We will evaluate how it went, what we can do better, but that is a good point. We definitely will look at that. How did the guys react? How did the coaches react to it? Obviously, the result is not very good. If we are just going on the result, it was not a smart move by the coach but then again, I do not regret it. It is part of finding out, being more efficient in what we do.

Jeremy Lin, who had not played in the previous two Wizards-Nets matchups due to injury, finished Friday nights game with 14 points and three assists in 20 minutes. He scored five of the Nets first seven points, he blocked a Markieff Morris shot early in the first quarter, and by halftime he had 10 points. His team was not playing well, but it looked as Lin was fully engaged and prepared to give Wall and Jennings fits in the second half. But after scoring the opening basket of the second half to cut Washingtonslead to 19 points, Lin was virtually a no-show the remainder of the game. He had two fouls and a turnover in the 7:04 he played in the third quarter, and as the Wizards began to make the game a laugher, he did not re-enter.

Afterward, Lin had both his knees and feet ensconced in ice and he slowly shook his head and stared at the box score. When the media came to him, Lin reluctantly spoke but was eventually quite candid with his comments and his role in his teamsblowout loss. Lin blamed himself for Brooklynspoor performance, and he specifically blamed his inability to get the team meaningful possessions and shots every time down the floor. He also took full responsibility for Brook Lopezs quiet night. Lopezentered the game averaging 20.5 points, 5.2 rebounds, and five 3-point attempts and nearly two makes per game. He finished with just six points, seven rebounds and no 3-pointers made in just two attempts. Lin took responsibility for that, too. I just look at the box score and think that I need to get Brook a lot more involved. I feel like he had a relatively quiet night. I have to be able to get him more touches.

Lin also cited the spacing and scoring brilliance of both Wall and Beal.

From a distance, Washingtonsblowout win looks like the latestin a series of malaise-causing events for a 15-57 Brooklyn team. But the Nets came into D.C. looking for their first three-game win streak of the season and their first win on the second night of a back-to-back. They are a team which has takenpride in their ability to play hard every night despite the dearth of talent something Scott Brooks made his business to praise the Nets forduring his pregame presser. They really havent had too much to look forward to this season, but a potential victory over the Wizards would have surely given them a sliver of joy in late March.

But the cold reality is that the Washington Wizards, even with their inconsistent play and their fleeting effort on the defensive end of the floor, are the third-best team in the Eastern Conference and one of the top ten teams in the NBA. Brooklyn gave a valiant effort in the first few minutes of the game and again in the third quarter when they scored 39 points to Washingtons34. But all that added up to a 21-point loss, a fourth quarter featuring borderline taunting and laughter by the Wizards, depressing explanations with long faces, and forced optimism about the possibilities of positivity that the next game might bring.

Rashad has been covering the NBA and the Washington Wizards since 2008his first two years were spent at Hoops Addict before moving to Truth About It. Rashad has appeared on ESPN and college radio, SportsTalk on NewsChannel 8 in Washington D.C., and his articles have appeared on ESPN TrueHoop, USAToday.com, Complex Magazine, and the DCist. He considers Kareem Abdul-Jabbar a hero and he had the pleasure of interviewing him back in 2009.

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From The Other Side: The Anatomy of Brooklyn's Blowout Loss in Washington - Truth About It - Washington Wizards Blog (blog)

Master of McNeil tells how he learned to trust bears – Casper Star-Tribune Online

Larry Aumiller spent 40 years trying to come to terms with the expression on the Boone and Crockett Clubs bear statue.

Those bears can be aggressive, Aumiller said. But thats less than one-hundredth of a percent of what they do. In fact, if you want to be really typical, youd have them sleeping.

Standing beneath the ferocious bronze with its flared lips and reaching paws, the man who ran Alaskas McNeil River State Game Sanctuary for three decades can back up his opinion. If youve ever seen a picture of a huge bear catching a salmon, it was probably taken by someone standing close to Larry Aumiller. He recently winnowed through 35,000 slides he shot while leading visitor groups to the fabled riverside.

Aumillers experiences have been compiled in a new book by Jeff Fair released this month. Titled In Wild Trust, it lays out Aumillers conviction that big bears deserve a place in a human-dominated world.

Aumiller told his story to Fair, first in an Anchorage coffeeshop and then through dozens of interviews at Aumillers Missoula home. Fair himself spent 23 years in Alaska studying wildlife. He also trapped grizzly bears for radio-collar studies in Yellowstone National Park and worked for decades managing loons and other creatures all over North America.

A recent McNeil River study logged 14 serious bear charges toward people in the sanctuarys 50-year existence. In each case, it appeared the person triggered the charge and the bear was a non-habituated newcomer to the scene.

Habituated bears are very predictable, Aumiller said. I realize its a really tough sell, but its possible for humans and bears to co-exist in the same place. And to live with them not only enhances our day, it sets the stage for long-term human survival. Theres a quote from Chuck Jonkel: If we can live with them, we can live with ourselves.

Jonkel died last April at 85 after decades of teaching bear biology and founding the International Wildlife Film Festival in Missoula. Most living bear researchers and managers today had some contact with him as a student, colleague or occasional scratching post.

At a recent conference on bear-human interaction, the roomful of experts was debating how to handle the growing interest in raising chickens (which tempt bears). From the back of the room, Jonkel raised his hand to speak.

The room went silent, Aumiller recalled. Chuck says, 7.2 billion people in the world, and were talking about chickens? He was always a big-picture guy.

Because the big picture shows humans building houses and roads in prime bear country. The vast majority of those humans only deal with bears in two dimensions, as a photograph or possibly a rug. The idea of sharing personal space with, as Aumiller says, something big and furry that bites engages more the cave-dwellers primal fear than the space-travelers rational consideration.

We have an intellectual ability to get beyond fear, Aumiller said. Just driving to this interview today was statistically more dangerous than all those years in the (McNeil) sanctuary. I wish we were more tolerant as a species. It would be good for critters and good for us, too.

When former Missoulian reporter Ginny Merriam got a chance to visit McNeil River in 1999, she encountered Aumiller. As she described the scene:

Humans can visit here, but only in groups of 10 or fewer, flanked at either end by bear biologists armed with tender sensibilities and Remington Model 870 shotguns that they never use. The guests must bunch together, talk softly, make small movements, never threaten or crowd a bear and never, ever allow a bear to get human food. In the 25-mile-long and 4- to 5-mile-wide McNeil River State Game Sanctuary at the top of the Alaska Peninsula and off Cook Inlet, no bear is hunted or even darted and tagged.

Aumiller, who has been called the Dian Fossey of bears and obsessive, is recognized as one of the best in the world at reading bears. He believes passionately that people and bears can live together peacefully if the tone of the relationship is set up properly. Bears can be habituated to the presence of people if the people exhibit inoffensive and predictable human behavior rather than setting up an adversarial relationship in which we yell and shoot, and bears flee and attack, he says. His definition of habituation means the absence of a flight response and the absence of aggression.

Some bear biologists believe any habituated bear is a dangerous bear. Aumiller and (fellow McNeil staff member Derek) Stonorov disagree. They say a key is keeping bears from seeing people as food sources, becoming food-conditioned.

Aumiller maintains that basic rule underpins all good bear management. As federal, Montana, Idaho and Wyoming wildlife managers contemplate removing Endangered Species Act protection from grizzly bears in the Rocky Mountains, those rules will undergo lots of review.

In advance of that possibility, Aumiller has spent much time working with organizations like Missoula-headquartered Vital Ground Foundation, which protects bits of landscape necessary for bear survival.

Larrys experiences in McNeil River produced some amazing insights, said Vital Ground administrator Shannon Drye. Hes helped us select properties and made sure they were the best parcel for grizzly bear need, like biological connectivity between ecosystems. He really brought the biological expertise.

All that expertise came despite never attending a wildlife class or earning a biology degree. Fair described Aumillers first day at McNeil in 1976, wondering when he would see his first bear:

Then he remembered the raft carrying his equipment and goods, out there by the incoming tide. He went to the door. Something was wrong with the picture before him. His raft and its cargo were now animated. Bow, stern, and sides leaping up and down, loaded rifle (protection!) tossing into the air now and again, boxes of food somersaulting in the wild tumult

The engine of the whole performance, the perpetrator, was a young brown bear, who had become infatuated with the rubbery bounciness of the raft. Aumiller watched the young bear, rump-down in the raft and obviously enjoying the effects of pounding his paws on the inflated sides of his new playpen, making the gun and food boxes bounce to high heaven reveling in the entertainment.

He stood at the threshold of his new headquarters, the bear now in possession of his loaded gun, his food and his raft and wondered what the hell to do.

Aumiller told the bear to leave, and it did. That idea of setting trust boundaries became the foundation of McNeil River interactions, although the wider world still has trouble with the concept. Looking at a map of the sanctuary, Aumiller points out the surrounding McNeil River State Game Refuge, itself surrounded by the Katmai National Park and Katmai National Preserve, which in turn are enveloped by the rest of Alaska. Each place has different rules where bears are revered as tourist attractions or keystone predators or hunting trophies, with the bears themselves wandering across invisible lines at will.

I spent 34 years with (Alaska State) Fish and Game, Aumiller said. I understand hunting, although Id never shoot a bear. I hope to get people convinced that its possible to live with them. To do that, you have to protect the absolutely best places on earth.

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Master of McNeil tells how he learned to trust bears - Casper Star-Tribune Online

Book Review: Metamorphoses by Ovid – Uloop News

Metamorphosesby Ovid explains that misogynistic behavior of men are displayed during the time period. Gods and goddesses are all very flawed characters, advising us that even immortals arent perfect. The men in the book are flawed because of their morals; they are flawed because they sexual assault goddesses and they believe they are powerful. This also represents people in todays society. Ovids book reflects his opinion about men and mens misogynistic behavior back then and how it is reflected in todays society.

The gods inMetamorphosesdo not have any morals because they think they are the most powerful. The highest level of authority is the Gods, even above the goddesses.Metamorphoses doesnt really have a plot but a rather series of scenes. In these scenes the characters reflect the carelessness in society.In this scene the god decides to kill someone.

His plan was to make a sudden attack in the night on my

Sleeping.

Body and kill me. This was chosen method of

Proving

The truth. Not content with that, he applied his sword

To the throat (Ovid 16.)

This quote express that the gods show no mercy to humans and is a reflection of human behavior. There are many people who are violent and have uncontrollable behavior in todays society. In one scene a god rapes a goddess and turns into a tree, stroking her. This is also displayed in the news today. According to New York Daily News, a student recently, from Columbia was raped by her boyfriend. The student carried a mattress around campus trying to remove her rapist from campus. Even though some men dont behave morally, others do.

In the bookMetamorphosesthere are a large portion of misogynistic behaviors such as rape. In this scene Nereus is getting raped. The perpetrator is sexually aroused and wants full power over her.

When Perseus noticed the maiden tied by the arms to a

Jagged

Rock-face (but for the light breeze stirring her hair and

The warm tears

Coursing over her cheeks, he would have supposed she

Was merely

A marble statue), unconscious desire was kindled

Within him, (Ovid 164.)

In this scene Perseus gets such extreme sexual desires that he rapes her. Its in mens animalistic behavior, and strong urges arise to do this when a man is attracted to a women.This shows the behavior that still goes on today. In the past there were no rules against sexual assault, but now there are. However rape is still a huge problem around the world. There are a slew of cases, similar to this one. There is a situation where a girl from India wasgang raped and she got beaten to death. Men in certain parts of the world sometimes dont respect women.This behavior is human nature and it is dominating over women. That is what Ovid is trying to represent in the book.

In Metamorphosesmen manipulate women. Men look at women as some pretty object, with whom they can play.Men believe they have all the power. The gods in this book believe they are the most powerful. This scene explains how men dominate the earth.

So man came into the world. Maybe the great artificer

Made him of seed divine in a plan for a better universe.

Maybe the earth that was freshly formed and newly

Divorced from the heavenly ether retained some seeds of its

Kindred element-

Earth, which Prometheus, the son of Iapetus, sprinkled with

Raindrops

And moulded into the likeness of gods who govern the

Universe.

When other animals walk on all fours and look to the ground,

Man was given a towering head and commanded to stand (Ovid 8,9.)

This quote explains how man tries to dominate the world. This quote reflects what Ovid thinks of men. It shows that he thinks men have all the power over everything. Even today men seem to have more power over women. Women get less of a salary than men in certain cases.

This book,Metamorphoses,shows the opinion of Ovid and how he believes that we live in a misogynistic world, even today. Women have politically and economically less power than men. Men want to be dominant over women, they own most of the businesses and back in the book,Metamorphose, women didnt even have jobs. There was a time women didnt even go to college. Some countries such as Lebanon women cant even get a divorce. (Presentation social work) InMetamorphoses thegod and goddesses get themselves in sticky situations, reflecting human behavior and how all humans are imperfect. There really is no plot in this book but it reflects how flawed society is. This book also shows how there is no such thing as love and most men want power. The gods lust after the goddesses. Today, in society, there are a lot of relationships built out of lust. However, there are some stable and loving relationships. Overall, in the bookMetamorphoses,there is a lot of misogynistic behavior in the book. There is also much misogynistic behavior in todays society. Sometimes men would beat their wives or sexually assault them but it also can be the other way around where women can beat their husband or abuse them or sexually assault them too like Duessa from Metamorphoses. Women had less control of what was happening and what to create. In this book the goddesses were abused. The men had more power, sexually assaulted women and had flawed morals. With this kind of behavior in this world, will humans ever grow? This superiority complex some people are affecting our world from growing. This shows how flawed society is. Human behavior reflects humans intelligence. It is the time humans need to acknowledge that women and men should have equal rights. Ovids story shows that humans are flawed and society is very misogynistic.

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Book Review: Metamorphoses by Ovid - Uloop News

Scientists Think They’ve Traced the Very First Mutations in a Human Life – ScienceAlert

For the first time, scientists have caught a glimpse of the earliest genetic mutations in human development.

Using whole genome sequencing, they wound back time on cell samples from adults and revealed what took place in the genome when they were still microscopic embryos. It turns out, our first two cells contribute to our development in very different ways.

Mutations come in two forms:the hereditary ones we get from our parents, which can be found in virtually every cell of the body; and the acquired (or somatic) mutations that can occur at any stage of a person's life, including those very first days when the embryo is just starting to split into multiple cells.

Somatic mutations don't necessarily cause problems, but they can sometimeslead to cancerand other diseases. They also don't necessarily live in every cell (that's calledmosaicism).

We have a fairly murky understanding of the somatic mutations that happen during the earliest life stages, because we can't just watch that stuff happening in real time.

But now researchers have discovered a way to trace these mutations back to their first appearance.

"This is the first time that anyone has seen where mutations arise in the very early human development. It is like finding a needle in a haystack," says geneticist Young Seok Ju from the Wellcome Trust Sanger Institute in the UK and the Korea Advanced Institute of Science and Technology.

"There are just a handful of these mutations, compared with millions of inherited genetic variations, and finding them allowed us to track what happened during embryogenesis."

To find these mutations, the team analysed blood and tissue samples from 279 people with breast cancer.Using samples from cancer patients allowed them to test whether mutations were present in both normal blood and tissue, and in surgically removed tumour samples.

Since breast cancer tumours develop from a single cell, a somatic mutation would either be present in every tumour cell, or not at all, which gives a clue to its possible origins.

By tracking and comparing the spread of different mutations in these various tissue samples, the scientists verified a whopping 163 mutations that must have happened within the first few cell divisions of the persons' embryonic development.

This gave them a unique insight into how early embryonic cells interact.

And that's not all - a statistical analysis revealed that when a fertilised egg divides for the first time, those two cells actually contribute building material for the rest of the body at different proportions.

It appears that one of the first two cells that make us up gives rise to 70 percent of the body tissue, while the other one chips in for the rest.

"We determined the relative contribution of the first embryonic cells to the adult blood cell pool and found one dominant cell - that led to 70 percent of the blood cells - and one minor cell," says molecular biologist Inigo Martincorena from the Sanger Institute.

"This opens an unprecedented window into the earliest stages of human development."

That's exciting, because having that window will let us discover even more about how humans develop and acquire various mutations from the get-go.

Even though the vast majority of mutations are random and harmless, occasionally they can affect an important gene, causing a developmental disorder or a disease.

"Essentially, the mutations are archaeological traces of embryonic development left in our adult tissues, so if we can find and interpret them, we can understand human embryology better," says lead researcher Mike Stratton, director of the Wellcome Trust Sanger Institute.

The researchers hope their discovery is just the first of many steps that will help us gain a better understanding of what happens to humans in the earliest days, when we're all nothing more than just a clump of cells.

The research was published in Nature.

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Scientists Think They've Traced the Very First Mutations in a Human Life - ScienceAlert

The anatomy of family murder – the patterns and warning signs | The … – The Independent

Just one week ago, on the evening of Saturday 19 March, a generally quiet north London neighbourhood, Finsbury Park, was rocked by a terrible crime, when two toddlers were found with critical injuries. Aman, said to be the birth father, has been arrested and charged with murder and attempted murder. Three of the more restrained headlines in response to these attacks read, depending on which newspaper one read: Man arrested over murder of one-year-old boy as his twin sister fights for life after alleged hammer attack (Daily Mirror); Man arrested on suspicion of murder after mother heard screaming for help as one-year-old boy is killed and sister is fighting for life, (The Daily Telegraph); and Distraught mother ran into street screaming my kids, my kids after finding her son beaten to death with a hammer (MailOnline).

The case has been set for a plea hearing in June, with a provisional trial date in September. The arrested man has yet to enter a plea and we must not second-guess the facts in this tragic case. However, this was the third distressing instance of multiple family victimsnationally in just three weeks. And those only the ones known to any audience beyond the local newssheet.

Less than two weeks before the Finsbury Park incident, police in Stowmarket found 65-year old carpenter and decorator Richard Pitkin dead. Also dead in the extended family home that used to boast a tea room was Sarah Pitkin, 58. The Pitkins, by report, were well-liked and respected. Police were not looking for anyone else in connection with their inquiries.

White House Farm in Essex, scene of the Bambermurders. The court decided Jeremy had placed the gun in his dead sisters hands to make it look like murder-suicide (Rex)

Stowmarket is a fairly small Suffolk town. Wolverhampton, by contrast, is a city of 250,000 inhabitants. But, just three days after news of the Stowmarket tragedy, the people of Wolverhampton were nonetheless alarmed to read in their copies of the Birmingham Mail: Man killed sister and knifed mum before killing himself.Had citizens and neighbours in that part of the Black Country turned to The Sun, even less would have been left to their imaginations: Maniac knifeman stabbed his sister to death and injured his mum before turning blade on himself in bloodbath at flat.

***

So in cases where there is family annihilation, what is it and why and why does it happen?

One of the most infamous family annihilations evertook place in sprawling White House Farm, Essex, on 7 August 1985. Sheila Bamber, her parents Neville and June Bamber, and her sons Nicholas and Daniel, were all killed that fateful day. Worse, Sheilas brother Jeremy Bamber, then aged 24, apparently staged everyones murder as if Sheila herself were the culprit. Homicide/suicide, surely? Police who initially attended the scene ironically in response to a panicked-sounding telephone call from Jeremy seemed content to accept that interpretation.

For weeks lasting into months, that narrative amazingly stayed unchallenged; and it is fair to say the incarcerated Bamber still maintains his absolute innocence three decades after his belated conviction. Five years ago this spring, his lawyers failed in their most recent attempt to gain his acquittal, or at least his release, this time before the European Court of Human Rights.

Conventional instances of homicide/suicide where the perpetrator cannot go to jail because he it is statistically far more likely to be a he is already dead, either at the scene of horror or perhaps at some secluded beauty spot nearby tend to have 10 common features.

The historical cases show is that in murder-suicides, first, the killer is, as said, likely to be a man: where familial, a son, brother or father rather than daughter, sister or mother. Second, isolation is frequently a factor, if not the deciding factor: geographical isolation, psychological or psychiatric isolation, perceived isolation within the family bullying, deprivation, marginalisation, or isolated status, disgrace.

Newspapers offer lurid headlines on the act, but rarely shed light on motive

Third, often the perpetrator is consumed with hatred: sometimes hatred is fuelled by resentment. And, fourth, one influence persuading someone to attack his own family so viciously is frequently a grudge: expulsion from the home, threatened separation, refusal of money, not being mentioned in a will, unfair accusations, a partners alleged infidelity or even something as trivial as youre forever nagging.

Fifth, the instrument of death is more often than not extremely violent: gun, sword, knife or hammer are preferred over suffocation or gassing. However, in recent years, fire appears to have been used more, perhaps because perpetrators are more aware of the importance of destroying DNA evidence, and with the terrible bonus that it is the fire or the smoke or both doing the killing, not the instigator.

Sixth, typically escape routes are blocked, and a time chosen when the family are near-at-hand, sleeping or watching TV. Keys are hidden. Those who rush upstairs are pursued. And those who rush downstairs are trapped. Elaborate precautions are taken that a getaway car is not to hand except for the killers use. Also, that killer needs to be faster down the street were one of his intended victims to achieve temporary freedom.

Seventh, it is likely that there have been lesser preparatory and experimental attacks before the final showdown. For example, survivors of domestic violence typically endure between 20 and 200 assaults before sounding the alarm and calling on neighbours, trusted siblings, or the police. Perhaps the family car is in an inexplicable crash. Or prowlers, maybe suspected of mere rogue-trading or peeping Tom-ery, are been seen near the later site of execution.

In the 1977 Pottery Cottage murders, Billy Hughes (inset) butchered a family in Eastmoor, near Baslow in Derbyshire (Derby Telegraph)

Eighth, pleas for mercy are routinely and callously ignored. Ninth, the perpetrator usually neither expects nor tolerates retaliation. He likely relies on past romance or deep-seated trust placed in him as one of us to deter any last-minute fracas.

Womens aid, womens assertiveness, women survivors, and womens self-defence groups place emphasis on attempting realistic self-protection. Naturally it is a truism that fighting back is risky, statistically abortive, sometimes provocative prior to an even worse fate, or very occasionally peremptory: a false alarm. Nobody should expect doomed family members always to have a heavy chair or flower-pot to hand but advice is sensibly given that if you are going to die in any case, you might as well attempt some resistance. And there is rare forensic evidence that the escaping man, whether or not he later self-harms or takes his own life, bears scratches, bruises, cuts or organ-damage that must have been inflicted by one, more, or even all, his targets.

Finally and disturbingly, tenth, if the killer dies during or following his act of family annihilation, could well be set to be rather than blamed: Poor soul ; Must have borne terrible suffering in the Army, at work, as a child....; Moment of madness ; Wonderful dad ; Not round to put the record straight, whatever. And this (probably undeserved) taking into account of past misfortune has possibly been orchestrated by the killer long before the act. Maybe letters have been written, certificates displayed, thousands of pounds raised for charity, compensation successfully awarded... anything to perpetuate a story of awful injustice, noble self-abnegation, valid self-sacrifice.Because the killers unbelievable yet curiously tenable accomplishment is to write the first version of history.

History he has himself fulfilled. History he has himself shaped. Maybe history could supply us with detailed statistics for (a) homicide/suicides; and (b) whole- family killings not attributed to an integral, or past, members of those threatened families?No such fortune. Whereas homicides (murders) appear in one table of figures, Suicides (sometimes attempted suicides) appear in other lists. Even then, statistic-gathering is chaotic, partly due to coroners hesitant to issue suicide verdicts.

Do other countries perhaps keep better records? No. What we do know is that family annihilation is occasionally cultural; also imitative. South Africa is blighted with two kindred phenomena: isolated Boer and/or white men, on the margins, killing their entire families then themselves; alternatively, a son: not impossibly a black or mixed-race son, killing his parents, maybe his siblings as well, with appropriation of assets an attributed motive.

As for the US, comparisons with UK family-killings are ever more fraught with difficulty. Guns and harmful weapons far more available than in Britain, and spree-killings of all types are hard to separate out from targeted killings of a culprits relatives, say with one or two bystanders also killed or injured. Home invasions in the States are certainly frequent but as few as 100 people each year die as a direct consequence of burglary or attempted burglary within the broken-into home; compared with at least 18,000 US suicides labelled suicides each year.

The Laitner familly at Suzannes (centre) 1983 wedding in Sheffield. Basil (left) along with Richard and Avril (right) were murdered hours later

Is alcohol an important component, giving the instigator more courage? Or are perpetrators drug-dependent? The jury is still out over mitigation. Who knows whether a killer with little or no regard to his own safety, his own discovery, his own lifespan, would have been more restrained with more inhibitions. Harmful substances certainly dont seem to reduce instances of family annihilation or their intensity.

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So where do my 10 common factors leading to family annihilation leave we who survive; we the relations and friends who are not subject to our own familys annihilation or someone elses; we who read about it from the comfort of our armchairs; we who are safe, secure, cherished and uplifted at home? A difficult quandary. Arguably, more difficult in the aftermath of family annihilation than in the wake of almost any other crime, any other catastrophe, even any other unforeseeable disaster.

Nor do the police, the courts, psychiatrists, or social workers those whose daily employment is to help those in distress, but not this degree of distress give the rest of an easy lead; give us reasons, perhaps in reply to that familiar plea: give us a clue! Society buries family annihilation (undertakers, literally) because the subject is too painful; it is seemingly too far beyond comprehension. Maybe falsely, family annihilation is considered a flash-in-a-pan; perhaps it is put down far too quickly to the mental illness of which it is so obviously a manifestation; and crucially there is rarely a survivor, less so an attendant survivor, to enlighten either the authorities or the public.

Police, press, parliament, the Church, social services, the NHS, everyone most likely to be listened to, can usefully move on to more pressing issues because there is there is nobody to prosecute, and/or nobody who can be subject of a child protection conference, and/or nobody who can be reassessed as a risk; or else the intentional killer who is an accidental or purposeful survivor makes a full confession. In which case there are only three available disposals: long-termimprisonment, enduring committalto hospital, or leeway enough, without intention, for the prisoner to finally take his own life (far more likely, statistically, if he lived through an initial attempt so to do).

Ironically, societys certainty thatits all over and done with militates against prevention, mitigation, avoidance, of family annihilation in the future. So onlookers and professionals alike are tempted to close the chapter, to let bygones be bygones. Instead, it is beholden on everyone to take account of warning signs: buildups of spite and resentment; previous domestic violence; acrimonious divorce and separation; bankruptcy; custody and access sessions denied or giving rise to concern; threats.

Because threats are not always empty. What everyone takes to be bragging, bad-mouthing, intimidation or hyperbole might actually be a signpost to future family annihilation. So statutory reviews must in future be held before the event, not after.

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Which brings me to my own commitment to find out more concerning family annihilation. That prompt came from four instances a little too near where I lived for comfort.

2017 marks 40 years after escaped prisoner Billy Hughes, now deceased, took a family hostage at a cottage in Eastmoor, near Baslow in Derbyshire, butchering Grandma, Grandad, the couples son-in-law and their granddaughter. Only Mum survived the Pottery Cottage Murders, even she within seconds of her own shooting or knifing. And Eastmoor is just four miles up the road from where for more than three decades we made our home.

The Shropshire estate at which in 2008 a millionaire with business problems murdered his wife and daughter before shooting dead their dogs and horses, setting fire to the house, and finally killing himself (PA)

Six years later came the Dore Wedding Day Massacre. A talented pupil taught by my wife crouched in her bedroom, in an affluent suburb of Sheffield, towards the end of the family celebrations that crowned her elder sisters marriage ceremony just hours earlier, and listened, listened, as every single member of her cherished family to hand solicitor father, doctor mother, older brother faced arbitrary execution at the other side of her hasty barricade. Grim. With worse for this young woman still to come. And all at the hands of a robber not a relative.

Came the day 10 years after that: at the time a I was a local government officer charged with supervising three childrens access to their mother at a voluntary-funded contact centre. I was returning from the centre when I heard that, in a lay-by just a few miles down the same road I was driving along, a jealous father, also a centre user, had had set light to himself and his two sons by a woman he had acrimoniously split from within the exactly parked care he had used for access to the children. Three bodies discovered within. No lads able to survive their ordeal, survive their access, and see their mother again; nor chance that mother should encounter, look after, love, her boys again. Total immolation. Total elimination.

One final coincidence: from 2011 to 2014, when I needed my car in the evening, I chose to park it at the other end of the alley opposite where Id moved to. And one enchanting summer afternoon, the cul-de-sac was full of police cars, sentries, men in white suits. I had not consciously registered the house before. It was semi-detached, privately owned, on the outer edge of a large post-war municipal estate. In succeeding days, I soon learnt Stepdad had murdered the widowed shopkeeper he had recently married, then laid on the same bed and stabbed himself to death. All because she had told him she had had enough.

In the face of such terrible calumny, in the light of such unimaginable discoveries, most observers, most survivors, most people holding Twitter or Facebook accounts, most readers of newspapers, will remain baffled as to why anyone, anywhere, would want to take them (those the murderer has known or loved) all with me thus releasing them from agony. Is this really the freedom from oppression a crazed killer yearns for? Or is this too speedy an escape from lifes trials and tribulations; too convincing a hope of a Better World than that into which we were all born?

Purportedly, family annihilation, family extinction, is absolute love absolute hatred? expressed absolutely. And whatever the reasoning behind it, this is an act committed so suddenly, so ruthlessly, so wilfully, it permits no second thoughts. No opportunity for reverse. No retrieval.

1) Christopher, aged 50, shot dead his wife, 49, and daughter, 15, before gunning down their horses and dogs and then setting alight his 1.2m Shropshire home in 2008. The former mattress and pizza-box salesman had made himself into a millionaire, but his business interests collapsed, leaving him in 4m of debt. Some say he killed his family in a crazed attempt to protect them from poverty they were about to face. The killer was caught on CCTV on the night of the blaze walking his mansion's grounds carrying a bucket, a rifle and lighter fluid for setting the fire.

2) The bodies of a mother, 44, her son, 13, anddaughter, nine, were found in February 2011. The mothers husband was working abroad. Police broke into the familys detached house, in the Midlands, after they were contacted by a concerned relation. The children were found in their bedrooms with stab wounds to their neck and chest. Their mother, a devout Roman Catholic, was in the bathroom with multiple knife wounds to her arms. An inquest heard that the womans mother called police after she was unable to contact her daughter. Police investigated the tragedy as a suspected double homicide-suicide.

3) A report into the care of a North-east of England ex-soldier, who shot dead four members of his family in 2006, found failings in the mental health care he received. David, 41, killed his aunt and uncle, both 70, and their sons Davids cousins aged 41 and 44. He was sentenced to a minimum term of 15 years after admitting manslaughter. There was a lack of communication between agencies.

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The anatomy of family murder - the patterns and warning signs | The ... - The Independent