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Tag: "lose" at biology news

Genomic comparison of lactic acid bacteria published

... bacterial contamination of spinach, it is easy to lose track of how bland and deprived our world would be without the contribution to our food supply of such benign microbial players as lactic acid-producing bacteria. Researchers from the U.S. Department of Energy Joint Genome Institute (DOE JGI) and the...

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

...centration. Only one patient seemed to continue to lose some brain volume, and this was also the patient who had been an alcoholic for the longest time. The leader of the research, Dr Andreas Bartsch from the University of Wuerzburg, Germany, said: "The core message from this study is that, for alcoho...

Too mellow for our predatory world

... longer evolutionary period, birds for example can lose their ability to fly. This would greatly reduce their ability to escape should new predators appear. In contrast to such "hard wired" traits, however, behavioural patterns should be significantly more flexible. In programmes introducing tame species ...

Study offers window into human behavior, brain disease

...urs. "The social and behavioral skills that you lose in frontotemporal dementia are so characteristically human, or at least strongly associated with higher primates," he reflects. "I think it's fascinating from an evolutionary perspective that we have these new neurons that are involved in social b...

St. Jude finds clues to hearing loss from chemotherapy

... more of a variety of mutations that cause them to lose the ability to hear high-frequency sounds, according to Jian Zuo, Ph.D., associate member of the St. Jude Department of Developmental Neurobiology. Zuo is senior author of a report on this work that appears in the October issue of Hearing Research. ...

Why Popeye only has eyes for spinach

...MD is a devastating disease where sufferers slowly lose central vision making reading and most day-to-day activities virtually impossible. The main risk factors for the disease are age and heritance but it is also linked to controllable factors such as poor diet, smoking and obesity. "Having their macul...

A giant among minnows: Giant danio can keep growing

...ans have the same ability before birth, but mostly lose it after birth. Because the zebrafish and giant...s that human embryos exhibit hyperplasia, but then lose that ability after birth, with one exception. When humans injure a muscle, the muscle sends a signal...

Fragmentation rapidly erodes Amazonian biodiversity

...ng species at a high rate. Fragments also tend to lose many of their large trees and become dominated by small, fast-growing species. Forest fragmentation may even increase global warming. The authors demonstrate that the small, fast-growing trees that proliferate in fragments contain less biomass,...

Parental genes do what's best for baby

...en the second copy can compensate; imprinted genes lose this safeguard and so are more susceptible to disease. Errors in imprinting have also been linked to cancer and other genetic disorders. Scientists have argued that the reason some genes only use or ‘express?one copy is due to a conflict between p...

What animals can tell us about hemorrhage, organ transplants and aging

...ls." How is it that: Hibernating squirrels can lose up to 60% of their blood volume and survive at least 10 hours? Brine shrimp can lie on the shore like brittle skeletons, but snap back to life when placed in water? Naked mole rats can live for 28 years but their mice cousins live only three? Birds l...

AIDS study challenges conventional treatment guidelines for HIV patients

...l for determining the rate at which he or she will lose infection-fighting CD4 cells than previously thought. HIV targets CD4 cells, a type of white blood cell, and as they decline after HIV infection, the complications that characterize the Acquired Immunodeficiency Syndrome (AIDS) become more common....

Just like us, social stress prompts hamsters to overeat, gain weight

...ess, just like a human. Mice and rats eat less and lose weight when subjected to a similar stress, making them a poor subject for human stress-induced obesity research. The study asked three questions: Does repeated social defeat increase food intake, weight and fat in hamsters? If so, how many defeats ...

Brain's 'gambling circuitry' identified

...ard the risk of whether they were likely to win or lose their bet that the second card would be higher or lower. Furthermore, the researchers divided that anticipatory period into two subperiods. During a one second period immediately after the first card was displayed, subjects were concentrating on ex...

How bad is malaria anemia? It may depend on your genes

... maintain their oxygen carrying capacity and don't lose as much hemoglobin, the protein found in red blood cells responsible for binding to oxygen molecules. "Demonstrating that MIF clearly contributes to severe anemia suggests new ideas for therapies that can block MIF in malaria patients," says the st...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

...y applied to humans. However, both mice and humans lose bone after radiation exposure, so the results rais...he risk of fracture by 200%, he said. Astronauts lose 2% of bone mass for each month they are exposed to the effects of microgravity. So far, astronauts h...

Some people would give life or limb not to be fat

...four percent, respectively, said they would rather lose a limb or be blind than be overweight. "We were surprised by the sheer number of people who reported they would be willing to make major sacrifices to avoid being obese. It drives home the message that weight bias is powerful and pervasive," said M...

Life and death in the hippocampus: what young neurons need to survive

...here is cognitive decline," says Gage. "We know we lose the ability to generate new neurons with age. We are currently trying to figure out how to generate as many neurons as possible to potentially enhance learning or increase the amount of neurogenesis in adults." ...

CHAVI announces international search for genes affecting HIV response

...us down to almost undetectable levels while others lose control of it quickly." The newly organized group, called EuroCHAVI, will recruit 600 patients from nine cohorts. "This will be is the largest cohort assembled for large-scale analysis of genetic differences among HIV-infected patients," said Amalio...

How ancient whales lost their legs, got sleek and conquered the oceans

...ould have caused whales, dolphins and porpoises to lose their hind limbs. More than 50 million years ago the ancestors of whales and dolphins were four-footed land animals, not unlike large dogs. They became the sleek swimmers we recognize today during the next 15 million years, losing their hind limbs i...

Genetic tug of war determines sexual differentiation

...er of the international research team. "If XY mice lose Fgf9, they develop ovaries, while XX mice that lose Wnt4 develop incomplete testes. This suggests that vertebrate sex determination results from the int...

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