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Tag: "bad" at biology news

Wheat can fatally starve insect predators

...e the insect's mid-stomach, the lectins also taste bad and have some toxicity. "By studying these different wheat genes, we're starting to put together a bigger picture of how Hessian fly-wheat interactions trigger resistance in the plant," Williams said. "We think that some of this has to do with the...

Chemo combination improves survival in asbestos-related cancer

...st, patients when faced with a disease with a very bad prognosis are often willing to undergo aggressive therapy, although the toxicity is serious and potentially life-threatening." ...

New technologies coming too fast for Indian farmers

...ighbors. Copying your neighbor isn't necessarily a bad thing; but in this case, everyone is copying everyone else, which results in fads, not testing." Stone argues that the previously undocumented pattern of fads, in which each village moves from seed to seed, reflects a breakdown in "environmental lear...

Newborn brains grow vision and movement regions first

...ife, he said. "Too much gray matter may be just as bad as too little gray matter," Gilmore said....

Scientists learn the origin of rogue B cells

...ircumstances, this new, good receptor replaces the bad one, but what Casellas and Dr. Patrick C. Wilson of the Oklahoma Medical Research Foundation found was that about 10 percent of the body's B cells retain both receptors: a good, useful one and the faulty self-reactive one that the good receptor was d...

Nanotextured implant materials: blending in, not fighting back

...als that will kill a cell ?no matter if it kills a bad cell or a good cell. We're trying to find material... that accept good cells, as opposed to killing off bad cells." Normal healthy blood vessels have a thin lining of specialized cells called the endotheli...

Mutation improves memory, may lead to memory-enhancing pill

...ed with a foot shock. Their memory for the earlier bad experience is determined based on how much they freeze in response to the "scary" place or sound 24 hr later. Importantly, the researchers also showed that treatment of animals with a small molecule that increases eIF2a's phosphorylation led to po...

Glucose triggers brain cell death in rats after hypoglycemic coma

... it clear that overshooting glucose levels is very bad for rat brains. The way we treat patients for hypoglycemia may have to be reevaluated." Swanson adds two strong cautions, however: "First, the work was done in rodents, and it is not legitimate to immediately extrapolate these findings to humans. ...

Get a whiff of this: Smell test could sniff out serious health problems

...le to really suppress the sniff and that’s why the bad odors work so well,?explains Frank. “To a certain extent, we put the banana smell in there to give them a little break.? Frank adds that his current research is exploring the patterns of loss of smell that could be an indicator of Alzheimer’s. He s...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

..."but sometimes it's a good thing, sometimes it's a bad thing." Building on their findings, they can begin to answer these questions. Shirasu-Hiza will be testing mutant flies with other circadian rhythm genes missing. They hope their work inspires researchers who work on vertebrates to explore the ...

Traumas like Sept. 11 make brains more reactive to fear

... were looking to see if people who have had a very bad experience would have more response to this relatively mild everyday stimulus." Indeed, the amygdalae of those who were close to the twin towers were significantly more activated than that of others, even when other factors were controlled for in t...

Pistachios lower cholesterol, provide antioxidants

...t and low-density lipoprotein (LDL), the so-called bad cholesterol, by 11.6 percent. The study also found that non-high density lipoproteins (non-HDL) decreased by 11.2 percent. Non-HDL levels are considered reliable predictors of cardiovascular disease risk. The three-ounce pistachio diet also decre...

Moths mimic sounds to survive

...to make specific sounds that warn the bat of their bad taste. Other species make sounds that closely mim...fered to them, associating the warning sounds with bad taste. They then avoided a second sound-producing species even though it was not chemically protect...

How brain pacemakers erase diseased messages

...ulation delivered at too slow a pace fails to keep bad information at bay. Indeed, slower pulses can actually add to problematic bursts, they showed. The model's findings closely parallel the clinical responses of patients, who typically experience the greatest relief from symptoms when their devices ...

How plague-causing bacteria disarm host defense

Effector proteins are the bad guys that help bacterial pathogens do their job of infecting the host by crippling the body's immune system. In essence, they knock down the front door of resistance and disarm the cell's alarm system. Now, researchers at the University of Californ...

Brain inflammation may be friend, not foe, for Alzheimer's patients

Inflammation in the brain may not be so bad after all when it comes to Alzheimer’s disease. ...orces the idea that inflammation is not simply the bad guy that many people think it is.” The work could have ramifications for the development of a vac...

Scratch no more: Gene for itch sensation discovered

...ice started scratching themselves as if they had a bad itch. "That's when we thought the gene might be involved in the itch sensation," Chen says. "So we began to systematically investigate this possibility." They studied scratching behavior in two sets of mice — normal mice and GRPR knockout mice. Norm...

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