In the News
Chlamydia Escapes Defenses By Cloaking Itself With Lipids
Duke University Medical Center microbiologists have discovered that the parasitic bacteria Chlamydia escapes cellular detection and destruction by cloaking itself in droplets of fat within the cell. The researchers said that their findings represent the first example of a bacterial pathogen "mimicking"such a structure, or organelle, within a cell. Thumb-Print Banking Takes India
A pilot program developed to help illiterate farmers use cash machines could revolutionize personal banking. If it takes off, a billion Indians will need only a thumb print to withdraw cash. Scott Carney reports from Chennai, India. Low Dose Of Serotonin-acting Chemical Improves Blood Sugar Tolerance
An appetite-suppressing chemical also improves glucose tolerance and lowers insulin levels in obese and diabetic mice, researchers report. Importantly, the researchers found, those effects of the drug occurred at a low dose that had no influence on feeding behavior, body weight, activity level, or energy expenditure. Stress Fast Tracks Puberty, Researchers Say
Stress, such as that brought on by parental separation and absentee fathers, fast tracks puberty, say researchers in the Journal of Epidemiology and Community Health. Diversity Promotes Cooperation Among Microbes
Understanding how cooperation evolves and is maintained represents one of evolutionary biology's thorniest problems. New research using the bacterium Pseudomonas fluorescens has identified a novel mechanism that thwarts the evolution of cheats and broadens our understanding of how cooperation might be maintained in nature and human societies. SIDS Infants Show Abnormalities In Brain Area Controlling Breathing, H
Infants who die of sudden infant death syndrome have abnormalities in the brainstem, a part of the brain that helps control heart rate, breathing, blood pressure, temperature and arousal, report researchers funded by the National Institutes of Health. The finding is the strongest evidence to date suggesting that innate differences in a specific part of the brain may place some infants at increased risk for SIDS. Study Explains Mystery Of Mars Icecaps
Scientists think they have an answer to the mystery of why the permanent icecap on Mars' South Pole is offset from the pole itself. Beyond that, this new understanding about Mars' climate and its polar regions may suggest clues to finding water in the planet's equatorial zone -- where it would be easier to land a spacecraft -- and opening the door to future exploration and the search for life. Motion Picture Ratings Fail To Distinguish Violent Content
A new study led by researchers at the UCLA School of Public Health shows that parents and filmgoers who use the Motion Picture Association of America (MPAA) ratings system to gauge movie content receive little meaningful guidance related to violent content. Role For Glucose-sensing Neurons In Type 2 Diabetes Identified
In cases of Type 2 diabetes, the body's cells fail to appropriately regulate blood glucose levels. New research describes a previously unrecognized role for glucose-sensing neurons in the onset of the disease demonstrating that an important component of Type 2 diabetes may indeed be "in your head." Warming Could Free Far More Carbon From High Arctic Soil Than Earlier
Scientists studying the effects of carbon on climate warming are very likely underestimating, by a vast amount, how much soil carbon is available in the high Arctic to be released into the atmosphere, new University of Washington research shows. A three-year study of soils in northwest Greenland found that a key previous study greatly underestimated the organic carbon stored in the soil. That's because the earlier work generally looked only at the top 10 inches of soil, said Jennifer Horwath, a UW doctoral student in Earth and space sciences.
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