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Tag: "not" at biology news

Peramivir protects mice from lethal H5N1 infection

...60 percent. The single intramuscular injection did not completely inhibit H5N1 virus replication in the lungs and spleen, but did decrease the spread of virus to the brain. "Peramivir should be given as soon as H5N1 infection is suspected, since onset of symptoms in infected humans can be delayed," s...

Amphibians in losing race with environmental change

...ecline. "But looked at in a different way, it's not just that there are threats and pressures amphibia...is, the OSU scientists point out that evolution is not a precise or perfect process - it takes time, is constrained by historic changes and compromises, a...

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

...evealed that SWA, or other sleep EEG measures, did not differ between the CFS and healthy twins during a ...ession, and some experts have suggested that it is not a distinctly different disorder," said Armitage. "We have also conducted studies of SWA response to...

Why do oysters choose to live where they could be eaten?

...y eat larvae if captured, settling larvae are just not captured very often. In fact, when a comparison of being captured versus landing on a suitable location to grow was conducted, it was found that more than 95 percent of an oyster reef is a safe zone for larvae. Given this low cannibalism risk at sett...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

... But when the two were combined, it was found that not being able to produce ST made no difference to Photorhabdus when colonising insects unable to produce phenoloxidase. "This is conclusive evidence for a gene-for-gene interaction between the bacterium and the insect," said Richard ffrench-Constant ...

US control strategies may make flu epidemics worse, UCLA study shows

...human strain of avian flu. And officials say it is not a question of if such a health crisis will come bu...health policy ?based on voluntary vaccinations ?is not adequate to control severe flu epidemics and pandemics unless vaccination programs offer incentives ...

Novel system developed to turn data into real-time, interactive 3-D images

..., as well as to instantly view internal structures not otherwise visible. "Data viewing is rapid and allows accurate diagnosis in a fraction of the time that physicians must now spend using current image viewing technologies," Clements says. The technology can be applied to any large 3- or 4-D d...

Vaccine prevents prion disease in mice

...roteins found normally that the immune system does not fight them off. To develop a vaccine that would st...ase. It normally takes 120 days for mice that have not been vaccinated to develop the disease. "These are promising findings," said study author Thomas...

Keeping the immune system from starting a 'food fight'

...onic metabolic disease, they said. "Humans were not meant to deal with little to no exercise and a constant bombardment of nutrients," said Gökhan Hotamisligil of the Harvard School of Public Health of his team’s findings. "If we could find ways to strengthen STAMP2 or prevent its suppression, the bod...

Master regulatory gene of epithelial stem cells identified

... a "master regulator" of this regeneration process not only for skin, but for many epithelial tissues inc...ard Medical School (HMS), shows that p63’s role in not in tissue differentiation but rather to impart "stemness" to the regenerative cells in these tissues...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

...ues for the development of non-desensitizing drugs not only for heart failure and asthma but also for other conditions such as pain and high blood pressure. "We demonstrated that when one of the systems goes awry, so does the other," said Stamler, whose laboratory has made many fundamental discoveries...

Fuel from fiber -- Pretreatment can put corn stalks, trees in your car's tank

...uel companies aren't touting that slogan. At least not yet. But thanks to research done in part by Bruce Dale, Michigan State University professor of chemical engineering and materials science, making fuels from poplar trees and corn stalks is becoming more efficient and cost-effective. Dale is inter...

Alien plants attack using 'resource conservation' as weapon, researchers say

.... "We were surprised that the invasive plants were not at a disadvantage under conditions where resources were scarce." Knowing your foe These results have important implications for controlling invasive species, said Chris Field, professor of biological sciences at Stanford and director of the C...

First clinical trial of gene therapy for childhood blindness

...gh a maze without difficulty; something they could not do before the treatment. As this trial is the first to treat an eye disease using administration of gene therapy vectors to human retinas, the team have carried out extensive pre-clinical testing. The purpose of this trial is to find out how safe and...

Corals -- More complex than you?

...quite a lot in common with corals, though it might not appear so," Professor Miller says. "For example, we have been amazed at how many of the genes involved in innate immunity in man are present in coral ?and just how similar they are." The significance of this may lie in the fact that scientists now...

8 plants from South Africa may hold potential for treating high blood pressure

...ngiotensin II receptor blockers (ARB). These drugs not only lower blood pressure but offer additional protection to the brain and heart. ACEI, in particular, provide beneficial properties to patients with type 1 diabetes. In an effort to identify indigenous plants consumed by the local population in K...

Simple home spit test to spot deadly pre-eclampsia

...e-eclampsia, problems with high blood pressure may not occur until the latter stages. The new test works by monitoring levels of urate, a salt of uric acid, increased levels of which are thought to be due to impaired kidney excretion in pre-eclampsia. 'A salivary urate test is simple, non-invasive...

A frown or a smile? Children with autism can't discern

When we have a conversation with someone, we not only hear what they say, we see what they say. Eye...hat normally respond to such visual cues simply do not respond. Led by Mari Davies, a UCLA graduate student in psychology, and Susan Bookheimer, a profe...

Traumas like Sept. 11 make brains more reactive to fear

...f a new Cornell study that excluded people who did not have such mental disorders as post-traumatic stres...and avoiding the site of the trauma), but they are not severe. However, the kinds of changes that these traumas cause in the brain, the researchers suspect...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

... "We used one bacterium to weed out another. I'm not aware of anyone ever doing that," Southwick said. "In an individual cell, you can't figure out where the actin is assembling and what's controlling it. But Listeria seems to use the same pathways that a cell uses to crawl. So anything that blocks Lis...

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