Tag: "dri" at biology news

Bursts of waves drive immune system 'soldiers' toward invaders

... ... "Seeing the wavelike dynamics...

Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes

... According to the Centers for Disease Control, 7% of the U.S. population has diabetes, and 90-95% of those cases are c...

Evolution is driven by gene regulation

... at Yale. The challenge for biologists i...

Proteaceae spread by continental drift and transoceanic dispersal

Using DNA sequence data, botanists have shown that the large southern hemisphere plant family Proteaceae lived on the super-continent Gondwanaland almost 120 million years ago. As Gondwanaland broke up, it was originally thought that these plants merely moved with the newly formed continents. But now a new study published in the Journal of Biogeography has shown that, while this is the case for...

Why nectar-feeding bats need a 'power drink' to fly

... Working with a captive breeding colony in Germany, Dr Christian Voigt of the Leibniz Institute for Zoo and Wildlife Research in Berlin and Professor...

Eat fish -- especially if you drink high levels of alcohol

... ... Essential fatty acids (EFAs) are a necessary part of an individual's healthy diet. ... New findings indicate that binge-drinking men have lower intakes of n-3 fats, one type of EFA.... This low intake exacerbates the already very low EFA levels. ... ... Essential fatty acids (EFAs) are just that; an "essential" part of the total fat intake necessary for a healthy human diet. Most EFAs c...

'Sundried tide' -- silent, natural disaster

... ... In a paper published in scientific journal Marine Biology, Dr Ken Anthony and Dr Ailsa Kerswell, of the ARC Centre of Excellence for Coral Reef Studies (CoECRS) at The University of Queensland (UQ) and James Cook University (JCU...

West Australian women: Drinking before, and during, pregnancy

... In a survey of non-indigenous West Australian women, 79.8 percent reported drinking alcohol in the three months before becoming pregnant. ... Nearly half of the women (46.7%) surveyed reported that their pregnancy was unplanned. ... More than half (58.7%) drank alcohol during pregnancy despite recommendations of abstinence. ... ... freque...

Buildup of damaged DNA in cells drives aging

PITTSBURGH, Dec. 20 The accumulation of genetic damage in our cells is a major contributor to how we age, according to a study being published today in the journal Nature by an international group of researchers. The study found that mice completely lacking a critical gene for repairing damaged DNA grow old rapidly and have physical, genetic and hormonal profiles very similar to mice that grow...

The 'driving' force behind electric vehicles

Cultural differences between countries run right to the heart of government, thereby influencing technological innovation. This is reported in a comparative study by David Calef and Robert Goble published recently in the journal Policy Sciences(1). The authors outline efforts taken throughout the 1990s by both the US and French governments to adopt legislation fostering technological innovation...

Spouse may 'drive you to drink' but also can protect you from alcohol

... ... A team of researchers from Washington...

MNI researchers find a new role for mitochondria in cellular copper regulation

Copper is an essential part of our lives. From copper pipes and wires - to important copper-containing proteins in the body, copper is necessary for healthy growth and neurological development. Researchers at the Montreal Neurological Institute at McGill University are studying how copper is processed in our bodies and its distinct role in early development. Their findings, published in a rece...

Not so contoversial anymore -- panel says moderate coffee drinking reduces many risks

... Indeed, panel co-chair Dan Steffen, who follows coffee and health issues in the Scientific and Regulatory Affairs group of Kraft Foods, note that the controversy is oft...

Can a taste for poison drive speciation?

The endless struggle for survival in nature inevitably boils down to finding food and eluding predators. To avoid the latter, many plants produce chemical weapons to discourage predators. A sound strategy overall, but the rules of co-evolutionary war suggest that an herbivore will evolve resistance to the toxic defenses of plants. The fruit fly Drosophila sechellia, for example, has a penchant f...

A genetic 'gang of 4' drives spread of breast cancer

Studies of human tumor cells implanted in mice have shown that the abnormal activation of four genes drives the spread of breast cancer to the lungs. The new studies by Howard Hughes Medical Institute researchers reveal that the aberrant genes work together to promote the growth of primary breast tumors. Cooperation among the four genes also enables cancerous cells to escape into the bloodstream...

Switching genes to overdrive improves muscular dystrophy symptoms in mice

... ... I think t...

Mitochondrial genes move to the nucleus -- but it's not for the sex

... ... That discovery, Brandvain explained, is unexpected. The most o...

Root beer may be 'safest' soft drink for teeth

... Consumers often consider soft drinks to be harmless, believing that the only concern is sugar content. Most choose to consume "diet" drinks to allevi...

Remote sheep population resists genetic drift

... ... "Wh...

Drivers and passengers on the road to cancer

... The survey, published in Nature today, shows that the number of mutated genes that drive development of cancer is greater than previously thought. Significantly, as well as driver mutations for cancer, each cell type carries many more passenger...

Monochloramine treatment not as effective in protecting drinking water

... "We have found something that is not necessarily a surprise but has important implications. These are considerations that water quality professionals should take into account if they have switched or are considering switching to a monochloramine disinfection system," says Dan Kroll, Chief Scientist at Hach...

Universities in 1.5M drive to cut cost of solar power

... ... The consortium of researchers, led by Professor Paul O'Brien from The University of Manchester's School of Chemistry and Professor...

Nectar is not a simple soft drink

The sugar-containing nectar secreted by plants and consumed by pollinators shares a number of similarities to fitness drinks, including ingredients such as amino acids and vitamins. In addition to these components, nectar can also contain secondary metabolites such as the alkaloid nicotine and other toxic compounds. Scientists Danny Kessler and Ian Baldwin from the Max Planck Institute for Chemi...

New UD technology removes viruses from drinking water

... ... The new technology could dramatically improve the safety of drinking water around the globe, parti...

Columbia University Medical Center awarded $3 million to drive Alzheimer's genetics research

Researchers at Columbia University Medical Center (CUMC) will receive a $3 million grant from the Merrill Lynch Foundation to support research into the genetic influences involved in Alzheimers disease and other neurodegenerative diseases of aging. ... The new Merrill Lynch-funded research is an expansion of work already under way by researchers at Columbia Universitys Taub Institute. The focus...

Protein sensor for fatty acid buildup in mitochondria

... The St. Jude discovery explains how the fatty acid-sensing enzyme PanK2 tailors production of this key molecule, coenzyme A (CoA), to the cell's energy demands. Understanding...

Faster, low cost sequencing technologies needed to drive era of personalized medicine

... Now, with a grant award from the National Human Genome Research Institute (NHGRI), scientists at the Biodesign Institute at Arizona State University are expanding efforts to dramatically lower the cost of DNA sequencing. </...

Moderate drinking may help older women live longer

... The study found that non-drinkers and women who rarely drank had a significantly higher risk of dying during t...

Flu shot effective against drifted influenza, nasal spray vaccine less so

... ... Earlier studies had suggested that the nasal spray, sold by MedImmune as FluMist, might offer better protection against drifte...

Does natural selection drive the evolution of cancer?

... ... A review by researchers at The Wistar Institute of current research in this new field,...

'Nanorust' cleans arsenic from drinking water

... ... "Arsenic...

Why our shifty eyes don't drive us crazy

... "This is a classic problem in neuroscience," says Marc Sommer, assistant professor of neuroscience at Pitt, who coauthored the paper with Robert Wurtz, senior investiga...

Moderate drinking may boost memory, study suggests

... ... ... "There is some evidence suggesting that mild to moderate alcohol consumption can protect a...

Harvesting machine driving mesquite-to-ethanol potential

Knocking down mesquite hasn't been a problem in the past....Picking it up and getting it off the land has, said a Texas Agricultural...Experiment Station researcher. ... That will change with a new mesquite harvester for use in...wood-to-ethanol production, said Dr. Jim Ansley, Experiment Station...rangeland ecologist. ... The only one of these machines in existence was demonstrated at the...

Few clues about African ancestry to be found in mitochondrial DNA

Mitochondrial DNA may not hold the key to your origins after all. A study published today in the open access journal BMC Biology reveals that fewer than 10% of African American mitochondrial DNA sequences analysed can be matched to mitochondrial DNA from one single African ethnic group. There has been a growing interest in the use of mitochondrial DNA to trace maternal ancestries, and several co...

Software tool helps protect Nation's drinking water: Now available in all 50 states

PORTLAND, Ore. October10, 2006 -- A new software tool that can be used by incident commanders, water utility managers, and others to protect community drinking water sources from contamination during emergencies is now available in all 50 states. Preliminary versions of the tool, called ICWater, have already been used by water utilities and State HAZMAT (hazardous materials) response teams in Ore...

Driving diversification

In the upcoming issue of G&D, Dr. Yuh-Nung Jan and colleagues at UCSF lend surprising new insight into the regulation of dendrite morphology in the fruit fly, Drosophila. The Drosophila peripheral nervous system contains four classes of dendritic arborization (da) sensory neurons, which differ in their stereotyped dendritic branching pattern. Dr. Jan and colleagues demonstrate that the gene spin...

Heavy drinking can hasten the progression of the simian immunodeficiency virus disease

... Alcohol abuse can impair a person's immune system.... Alcohol abuse is also very common among individuals infected with human immunodeficiency virus (HIV).... New findings indicate that heavy drinking can accelerate time to AIDS among rhesus macaques infected with simian immunodeficiency virus (SIV).... ... Alcohol abuse can impair a person's immune system, leading to infections like pneumon...

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

... "No, you won't see jittery Drosophila flitting past your bananas to slurp your morning java anytime soon," says Craig Montell, Ph.D., a professor...

Pregnant drivers, football players safer thanks to a top Virginia Tech researcher

... ... The editors of Technology Review, a publication of the Massachus...
(Date:10/17/2014)... Why do male ... reproduce? And why are there two sexes anyway? These and ... the research journal Molecular Human Reproduction published today ... University Bielefeld has compiled this special issue on sperm competition. ... copulate with several males in quick succession – chimpanzees are ...
(Date:10/16/2014)... Researchers at William and Mary,s Virginia Institute of ... from the Environmental Protection Agency to identify the ... and to develop tools to help local governments ... project depends critically on a dataset of tidal-marsh ... 1970s. Only with this historical baseline can today,s ...
(Date:10/16/2014)... respiratory tract infections and worldwide claims the lives ... and Ghent University have succeeded in developing a ... infection. , Xavier Saelens (VIB/UGent): "We discovered ... for the development of a novel approach to ... in numerous small children and elderly people." , ...
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