Staff Reporter

Paving the way for a fructose tolerance test

A new study finds that the hormone FGF21 is stimulated by fructose ingestion A new study finds that the hormone FGF21 is stimulated by fructose ingestion BOSTON - Increased consumption of table sugar and high-fructose corn syrup has been linked to rising rates of obesity and type 2 diabetes in the United States and throughout the world.

Cautious optimism as childhood obesity rates in Ireland plateau

Childhood overweight and obesity rates have plateaued in primary school aged children in the Republic of Ireland, reveals research published today in the open access journal BMC Public Health. The study found that although obesity rates remain high, there is evidence that they have stabilised and may be beginning to fall.

Impact of mental stress on heart varies between men, women

Study looks at mental and physical stress on patients with stable heart disease Study looks at mental and physical stress on patients with stable heart disease Men and women have different cardiovascular and psychological reactions to mental stress, according to a study of men and women who were already being treated for heart disease.

Versatile antibiotic found with self-immunity gene on plasmid in staph strain

A robust, broad spectrum antibiotic, and a gene that confers immunity to that antibiotic are both found in the bacterium Staphylococcus epidermidis Strain 115. The antibiotic, a member of the thiopeptide family of antibiotics, is not in widespread use, partly due to its complex structure, but the investigators, from Brigham Young University, Provo, Utah, now report that the mechanism of synthesis is surprisingly simple. "We hope to come up with innovative processes for large-scale production and derivitization so that new, and possibly more potent versions of the antibiotic can become available, says co-corresponding author Joel S. Griffitts. The research is published ahead of print in Journal of Bacteriology.

Teenage baseball pitchers at risk for permanent shoulder injury

Young baseball pitchers who throw more than 100 pitches per week are at risk for a newly identified overuse injury that can impede normal shoulder development and lead to additional problems, including rotator cuff tears, according to a new study published online in the journal Radiology.

Memories of pain during childbirth tied to intensity rather than length of labor

Childbirth is physically intense and, for many women, it is the most painful experience they will have. And yet, new research shows that the amount of time a woman spends in labor doesn't seem to impact how she remembers her labor pain afterwards. The research, published in Psychological Science, a journal of the Association for Psychological Science, reveals that the peak and end levels of pain women experienced, and whether they received an epidural, impacted their recall of labor pain afterward.

Embryos receive parent-specific layers of information, study shows

Research on 'epigenetic marks' opens new dimension in what gets passed on to children Research on 'epigenetic marks' opens new dimension in what gets passed on to children The information that interprets the genetic code in a new embryo differs depending on whether it comes from the father or mother, researchers at San Francisco State University have found.

Multiple neurodevelopmental disorders have a common molecular cause

Neurodevelopmental disorders such as Down syndrome and autism-spectrum disorder can have profound, lifelong effects on learning and memory, but relatively little is known about the molecular pathways affected by these diseases. A study published by Cell Press October 9th in the American Journal of Human Genetics shows that neurodevelopmental disorders caused by distinct genetic mutations produce similar molecular effects in cells, suggesting that a one-size-fits-all therapeutic approach could be effective for conditions ranging from seizures to attention-deficit hyperactivity disorder.

Researchers uncover how 'love hormone' regulates sexual behavior

Oxytocin has been called the "love hormone" because it plays an important role in social behaviors, such as maternal care and pair bonding. In a study published by Cell Press on October 9th in the journal Cell, researchers uncover oxytocin-responsive brain cells that are necessary for female social interest in male mice during estrus-the sexually receptive phase of their cycle. These neurons, found in the prefrontal cortex, may play a role in other oxytocin-related social behaviors such as intimacy, love, or mother-child bonding.

Newly discovered brain cells explain a prosocial effect of oxytocin

Oxytocin, the body's natural love potion, helps couples fall in love, makes mothers bond with their babies, and encourages teams to work together. Now new research at Rockefeller University reveals a mechanism by which this prosocial hormone has its effect on interactions between the sexes, at least in certain situations. The key, it turns out, is a newly discovered class of brain cells.

Entire female reproductive tract susceptible to HIV infection in macaque model

Most women are infected with HIV through vaginal intercourse, and without effective vaccines or microbicides, women who cannot negotiate condom use by their partners remain vulnerable. How exactly the virus establishes infection in the female reproductive tract (FRT) remains poorly understood. A study published on October 9th in PLOS Pathogens reports surprising results from a study of HIV transmission in the FRT of rhesus macaques.

Endocrine-disrupting chemicals alter thyroid hormone activity during pregnancy

Affected hormone plays key role in infants' brain development Affected hormone plays key role in infants' brain development A new study in human placenta provides the strongest evidence to date that Endocrine Disrupting Chemicals (EDCs) can interfere with thyroid hormone action in pregnant women.

Hunger games: How the brain 'browns' fat to aid weight loss

Researchers at Yale School of Medicine have uncovered a molecular process in the brain known to control eating that transforms white fat into brown fat. This process impacts how much energy we burn and how much weight we can lose. The results are published in the Oct. 9 issue of the journal Cell.

From human embryonic stem cells to billions of human insulin producing cells

Giant step toward new diabetes treatment Giant step toward new diabetes treatment Harvard stem cell researchers today announced that they have made a giant leap forward in the quest to find a truly effective treatment for type 1 diabetes, a condition that affects an estimated three million Americans at a cost of about $15 billion annually: With human embryonic stem cells as a starting point, the scientists are for the first time able to produce, in the kind of massive quantities needed for cell transplantation and pharmaceutical purposes, human insulin-producing beta cells equivalent in most every way to normally functioning beta cells.

Quantifying physical changes in red blood cells as they mature in the bloodstream

During their approximately 100-day lifespan in the bloodstream, red blood cells lose membrane surface area, volume, and hemoglobin content. A study publishing this week in PLOS Computational Biology finds that of these three changes, only the observed surface-area loss can be explained by RBCs shedding small hemoglobin-containing vesicles budding off their cells' membrane.
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