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Modern Europeans Descended from 3 Groups of Ancestors

September 18, 2014 1:56 pm | News | Comments

By comparing nine ancient genomes to those of modern humans, scientists have shown that previously unrecognized groups contributed to the genetic mix now present in most modern-day Europeans.                 

Sierra Leone to Shut Down for 3 Days to Slow Ebola

September 18, 2014 11:35 am | by Clarence Roy-Macaulay - Associated Press - Associated Press | News | Comments

Shoppers in Sierra Leone rushed to stock up on food Thursday ahead of a three-day nationwide shutdown, during which the country's 6 million people will be confined to their homes while volunteers search house-to-house for Ebola victims in hiding and hand out soap in a desperate bid to slow the accelerating outbreak.

Study Links Physical Activity to White-matter Integrity

September 17, 2014 2:00 pm | News | Comments

Like everything else in the body, the white-matter fibers that allow communication between brain regions also decline with age. In a new study, researchers found a strong association between the structural integrity of these white-matter tracts and an older person’s level of daily activity.

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BST This Week #16: How Did Life on Earth Begin?

September 17, 2014 1:44 pm | Videos | Comments

On this episode of Bioscience Technology This Week, Christina Jakubowski reports on new research seeking to prove how life on Earth began, by tracking the ancestors of RNA and DNA. Our second story focuses on the possibility of developing high-quality computed tomography scans from a lower radiation dose.

Artificial Sweeteners May Promote Diabetes

September 17, 2014 1:35 pm | by Malcolm Ritter - AP Science Writer - Associated Press | News | Comments

Using artificial sweeteners may set the stage for diabetes in some people by hampering the way their bodies handle sugar, suggests a preliminary study done mostly in mice.                       

Mechanism Behind Age-dependent Diabetes Discovered

September 17, 2014 1:10 pm | News | Comments

Aging of insulin-secreting cells is coupled to a progressive decline in signal transduction and insulin release, according to a recent study. The finding provides a new molecular mechanism underlying age-related impairment of insulin-producing cells and diabetes.

Healthy Humans Make Nice Homes for Viruses

September 17, 2014 1:03 pm | News | Comments

The same viruses that make us sick can take up residence in and on the human body without provoking a sneeze, cough or other troublesome symptom, according to new research.                       

One-minute Point-of-care Anemia Test Shows Promise

September 17, 2014 12:54 pm | News | Comments

A simple point-of-care testing device for anemia could provide more rapid diagnosis of the common blood disorder and allow inexpensive at-home self-monitoring of persons with chronic forms of the disease.             

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CDC Study: Americans' Bellies Are Expanding Fast

September 16, 2014 4:35 pm | by Lindsey Tanner - AP Medical Writer - Associated Press | News | Comments

The number of American men and women with big-bellied, apple-shaped figures — the most dangerous kind of obesity — has climbed at a startling rate over the past decade, according to a government study.              

ADHD Brain: Slow to Mature, Quick to Distract

September 16, 2014 3:06 pm | News | Comments

A peek inside the brains of more than 750 children and teens reveals a key difference in brain architecture between those with attention deficit hyperactivity disorder and those without.                   

19 Dates Tracing the Rise of Ebola

September 16, 2014 1:36 pm | by The Associated Press | News | Comments

Since the Ebola outbreak first emerged in West Africa, The Associated Press has been reporting on it. A timeline compiled from AP dispatches since March shows the dreaded disease being identified in a remote part of Guinea and then spreading to another country and then two more.

Smoking, Schizophrenia Linked by Altered Nicotine Signals

September 16, 2014 1:25 pm | News | Comments

A new study shows how schizophrenia is associated with increased rates and intensity of tobacco smoking by showing that the level of nicotine receptors in the brain was lower in schizophrenia patients than in a matched healthy group.     

Key Role of Language Gene Identified

September 16, 2014 1:18 pm | News | Comments

Neuroscientists have found that a gene mutation that arose more than half a million years ago may be key to humans’ unique ability to produce and understand speech.                         

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Newly Spotted Genetic Variants Increase Diabetes Risk

September 16, 2014 1:13 pm | News | Comments

Researchers have identified nine genetic variants that dramatically increase the risk of developing type 2 diabetes, adding to our knowledge of the disease’s underpinnings and providing a glimpse of its vast genetic diversity.       

UN: Nearly $1B Needed to Stop Ebola

September 16, 2014 11:36 am | by John Heilprin and Krista Larson - Associated Press - Associated Press | News | Comments

The number of Ebola cases in West Africa could start doubling every three weeks and it could end up costing nearly $1 billion to contain the crisis, the World Health Organization warned Tuesday.                

Jacobsen Syndrome, Autism Linked

September 15, 2014 1:28 pm | News | Comments

A rare genetic disorder known as Jacobsen syndrome has been linked with autism, according to a recent joint investigation by researchers. In addition to suggesting better treatment options for people with Jacobsen syndrome, the finding also offers more clues into the genetic underpinnings of autism.

'Biospleen' is a Blood Cleanser for Sepsis

September 15, 2014 1:21 pm | News | Comments

Things can go downhill fast when a patient has sepsis, a life-threatening condition in which bacteria or fungi multiply in the blood—often too fast for antibiotics to help. A new device inspired by the human spleen may radically transform the way doctors treat sepsis.

Neural Compensation Found in People With Alzheimer’s-related Protein

September 15, 2014 12:48 pm | News | Comments

The human brain is capable of a neural workaround that compensates for the buildup of beta-amyloid, a destructive protein associated with Alzheimer’s disease, according to a new study.                   

U.S. Works to Step Up Ebola Aid, But is it Enough?

September 15, 2014 3:35 am | by Lauran Neergaard - AP Medical Writer - Associated Press | News | Comments

The American strategy on Ebola is two-pronged: Step up desperately needed aid to West Africa and, in an unusual step, train U.S. doctors and nurses for volunteer duty in the outbreak zone.                 

Kids' Poisonings Linked to Anti-addiction Medicine

September 15, 2014 12:34 am | by Lindsey Tanner - AP Medical Writer - Associated Press | News | Comments

An anti-addiction drug used to fight the nation's heroin and painkiller abuse epidemics poses a threat to young children who accidentally swallow relatives' prescriptions, a federal study says. Some children have died.          

BST This Week #15: Bees May be Key to Antibiotic Alternatives

September 12, 2014 8:30 am | Videos | Comments

On this episode of Bioscience Technology This Week, Christina Jakubowski explores the role that bees may play in the search for antibiotic alternatives. Our second story focuses on how increased carbon dioxide levels in water can rob sharks of their ability to sense the smell of food.

Two Anti-Ebola Vaccines in Historic Race

September 11, 2014 3:38 pm | by Cynthia Fox | Articles | Comments

One of the most rapidly fast-tracked vaccines in history— an anti-Ebola “ChAd3” vaccine— just started clinical trial in humans, and may be done as soon as November. But a second fast-tracked anti-Ebola vaccine— called an “rVSV” vaccine— is hot on its heels.

Gut Microbes Determine How Well Flu Vaccine Works

September 11, 2014 3:34 pm | News | Comments

Mice treated with antibiotics to remove most of their intestinal bacteria or raised under sterile conditions have impaired antibody responses to seasonal influenza vaccination, researchers have found.               

Neurochemical Imbalance Discovered in Schizophrenia

September 11, 2014 3:28 pm | News | Comments

Using human induced pluripotent stem cells (hiPSCs), researchers have discovered that neurons from patients with schizophrenia secrete higher amounts of three neurotransmitters broadly implicated in a range of psychiatric disorders.     

Using Antibiotics to Help Heart Problems

September 11, 2014 12:17 pm | News | Comments

A research team is looking at whether an antibiotic has the potential to prevent or treat irregular heartbeats brought on by other medicines, thanks to a grant from national charity in the UK.                 

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