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Tag: "vulnerable" at biology news

Research team identifies new Alzheimer's gene

...s showed that the GAB2 gene is unusually active in vulnerable brain cells from Alzheimer’s patients and that the GAB2 protein produced by this gene is present in those brain cells containing tangles. When the researchers silenced GAB2 in preliminary studies it increased a molecular process thought to play an im...

Study shows lizard moms dress their children for success

... end up with a mismatch that would leave it highly vulnerable to predators--wearing stripes and trying to hide i...ghting with other lizards that they are especially vulnerable to predators. As a result, the predators are likely to focus on them, giving a survival advantage to...

Ancient retrovirus sheds light on modern pandemic

...innate immunity to one virus may have made us more vulnerable to HIV." Evidence of human immunity to this ancient retrovirus first emerged with the sequencing of the chimpanzee genome. "When the chimp genome was sequenced, a team of scientists at the University of Washington led by Evan Eichler found the larg...

For many insects, winter survival is in the genes

...to disrupt the diapause process and make an insect vulnerable to low temperatures," Denlinger said. "At this point, the findings broaden our palette of players that contribute to cold tolerance in insects." He said the next step is to figure out the unique functions of each heat-shock protein. "We assume ...

Amphibians in losing race with environmental change

... amphibian life cycles makes them more immediately vulnerable than many other species, the researchers said. ...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...logical invasions, populations on islands are more vulnerable than those on the mainland to sea level rise and i...ur study suggests that islands will continue to be vulnerable worldwide.? “Many people, myself included, enjoy visiting islands for their spectacular wildlife,...

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

...ate models suggest that Micronesia is particularly vulnerable to climate change over the next millennia, and will be likely subjected to repeated thermal stress events and water temperatures considerably higher than historical averages. Using underwater digital video cameras, van Woesik and his t...

Improved predictions of warming-induced extinctions sought

...search suggests that species might in fact be more vulnerable than the fossil record indicates. ...

Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

...he study may also shed light on why women are more vulnerable to addictive drugs during the pre-ovulation phase of the cycle." Berman, Drs. Jean-Claude Dreher, Peter Schmidt and colleagues in the NIMH Intramural Research Program report on their functional magnetic resonance imaging (fMRI) study online during...

Tracking sperm whales and jumbo squid

...rs, he noted, sperm whales can take advantage of a vulnerable squid, whether it’s slowed down by hypoxia at depth during the daytime, or at night after it has made a deep dive to escape the warm, stressful conditions at the surface. "By hunting deep in this cold, hypoxic environment at night, as well as duri...

Discovery could lead to better control of hemorrhagic fever viruses

...ilize to fight the viruses ?making them especially vulnerable to infection. "This may help explain why mortality is so high," says Choe, the study's senior author. Choe now hopes to translate these findings into treatments to contain natural or intentional outbreaks of New World hemorrhagic fever. Seren...

Cold sore virus might play role in Alzheimer's disease

... more likely to have the gene that makes them more vulnerable to Alzheimer's disease. Cold sores that come an...several ways in which the gene might make a person vulnerable to getting a disease like Alzheimer's. In people with the ApoE-4 gene, brain cells don't seem to rec...

Smell may outlast other senses

...ffect on smell. “However our sense of smell is vulnerable to both the direct effects of some medications and changes associated with a number of neurodegenerative illnesses. Exposure to these factors typically increases with age.? Anticholesterol and blood pressure lowering medications were amongst the co...

Researcher to study astronaut bone loss for space biology agency

...turn to normal. During that time, bones are highly vulnerable to fracture. Here on Earth, explains Bikle, immobilized patients experience bone loss for the same reason astronauts do: their skeletons have not borne any weight. "This makes their rehabilitation risky, because, like astronauts who have returned ...

Climate change could trigger 'boom and bust' population cycles leading to extinction

...t" population cycles that make animal species more vulnerable to extinction. , according to Christopher C. Wilme...would be better off, but it turns out they're more vulnerable to a drop in resources," says Wilmers. Understanding how environmental changes influence fluctuat...

Failure to meet United Nations sanitation target could affect millions of the world's poorest

...do, because densely settled areas are particularly vulnerable to the transmission of waterborne diseases. But from an ethical perspective, such a strategy is untenable." ...

Scientists unveil piece of HIV protein that may be key to AIDS vaccine development

... and—more importantly, say the researchers—appears vulnerable to attack from this specific antibody, known as b12, that can broadly neutralize HIV. "Creating an HIV vaccine is one of the great scientific challenges of our time," says NIH Director Elias A. Zerhouni, M.D. "NIH researchers and their colleagues ha...

Warming oceans threaten Antarctic glaciers

... flow directly into the oceans. These glaciers are vulnerable to small changes in ocean temperature, such as those that have occurred over the 20th century, and those predicted for the 21st century. A rise of less than 0.5 ºC could have triggered the present imbalance." Professor Duncan Wingham, at Universit...

Bats prey on nocturnally migrating songbirds

...tumn may represent naïve, inexperienced, i.e. more vulnerable prey. The ability of giant noctules to prey on the wing upon nocturnally migrating passerines appears unique not only among bats but also within the whole animal kingdom. Although carnivorous bats feeding on small-sized vertebrates are not rare, t...

New research shows that flu is a trigger of heart attacks

...ggerated inflammation, leading to rupture of these vulnerable plaques and subsequent formation of clots resulting in heart attacks. "This study shows that flu is an important trigger of heart attacks because flu is a severe infection, with high incidence rates and is readily preventable. Therefore, our resu...

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