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Tag: "effects" at biology news

Quitting smoking reduces risk of lung cancer mortality by 70 percent

... parts of Asia, including China, where the harmful effects of smoking are still not widely appreciated. In ...ina." "Inadequate knowledge of both the harmful effects of cigarette smoking and of the benefits associated with quitting is likely to explain much of the c...

Microfluidic chip helps solve cellular mating puzzle

...dings may help produce medications with fewer side effects and others that target mutations associated with cancer. ...

Anti-herpes treatment reduces HIV levels in women infected with both viruses

...ymptomatic and asymptomatic presence of HSV-2. The effects appeared to gradually increase over the 3 month follow-up period, with no sign of abating.' These results indicate a new way to possibly reduce the sexual transmission of HIV from already infected individuals to their partners, since the frequency a...

Salamanders suffer delayed effects of common herbicide

...ten do not consider recovery processes, persistent effects of chemical exposure, or interactions among indivi...ine exposure paled in comparison to the persistent effects of atrazine that continued to cause mortality after exposure ceased, said researchers. Compared to s...

Bacteria could steady buildings against earthquakes

...together. But these epoxy chemicals may have toxic effects on soil and water, said Jason DeJong, an assistant professor of civil and environmental engineering at UC Davis. The new process, so far tested only at a laboratory scale, takes advantage of a natural soil bacterium, Bacillus pasteurii. The microb...

Scientists unravel clue in cortisol production

... the body's functions to normal. But the hormone's effects are many and varied, lowering the activity of the immune system, helping create memories with short-term exposure, while impairing learning if there's too much for too long. Given the variety of its effects,understanding how cortisol is made is essen...

Organic is healthier: Kiwis prove that green is good

...e. He is also concerned about any unknown negative effects on the health. “The authors also did not look for any plant secondary metabolites of potential toxicological impact.? According to the Soil Association, organic food sales in the UK increased by 30% to £1.6bn in 2006. The world market for certified...

Study finds mercury prevalent in many western fish

...at what levels they may be affected. In birds, the effects of mercury contamination are neurological or behavioral ?and often subtle. They may not clean their young, or they may leave eggs unattended in their nests. "We simply haven't done enough studies to know all of the impacts, especially on fish-eatin...

Army research mission focused on autism

...d has a long history of focusing on mitigating the effects of specific diseases in a mission driven manner. Combat conditions have required the Army to seek out innovative research to use new materials, new techniques and treatments, basically to develop new ideas to save lives," said Col. Janet R. Harris, d...

E. coli bacteria migrating between humans, chimps in Ugandan park

...dberg said. "We’re as concerned about potential effects on human health as on animal health," he said. He noted that the exchange of microbes between non-human primates and humans is not new. Two deadly viruses, HIV and Ebola, are believed to be linked to chimpanzees and other non-human primates. Human...

Fish growth changes enhanced by climate change

...reases the sensitivity of species to environmental effects and could be magnifying the effects of long-term climate change and short-term climate variability on the viability of some species. ...

Reactivated gene shrinks tumors

... also revealed that turning on p53 has no damaging effects in normal cells. The researchers had worried that p53 would kill normal cells because it had never been expressed in those cells. "This means you can design drugs that restore p53 and you don't have to worry too much about toxic side effects," sai...

Williams College biologist explores photosynthetic apparatus

...potential global climate changes to understand the effects of temperature on the photosynthetic capabilities of this ecologically important marine cyanobacterium. She hopes that the project will lead to a marked improvement in the ability to accurately model primary production in ocean ecosystems, as wel...

Satellites shed light on global warming

...ry waves, which are internal waves that have major effects on large-scale ocean circulation and thus on clima...he oceans, which may have a number of far-reaching effects on ocean dynamics. "It is no surprise, then, that scientists are eager to better understand thes...

Cellulose nanocrystal research could lead to new vaccines, computer inks

...eptor-blocking method, this process can combat the effects of some diseases involving inflammation of blood vessels, including diabetes, rheumatoid arthritis, and certain cancers. Ink jet printing was another research project for Roman. She experimented with using ink jet printers to deposit the crystals ...

Turning a cellular sentinel into a cancer killer

...eactivating p53 could also be applied to study the effects of other regulatory molecules on cancers. "We thin... Jacks and his colleagues next plan to study the effects of p53 reactivation in other cancers. They hope to use the technology to understand why some cancers...

Minuscule molecules pack a powerful punch

... Our findings were dramatically different." The effects of the miR-155 knockout swept across the immune sy...ing that knocking out a microRNA has such dramatic effects opens new doors to understanding this novel class of gene regulation, with consequences for human he...

Smokers quit after damage to brain region

...ion is especially surprising, given the brain-wide effects of nicotine on the nervous system. The study considered smokers with damage that did not include the insula, but the likelihood of disrupting the smoking addiction was many times greater when the insula was involved. ...

Growth hormone to boost athletic performance risks diabetes

...e growth hormone. This was done to counter the effects of high blood sugar, but he had stopped taking it after a couple of episodes of acute low blood sugar (hypoglycaemia) while at the gym. Tests revealed that his liver was inflamed, his kidneys were enlarged and that he had very high blood sugar. He...

Coated nanoparticles solve sticky drug-delivery problem

...e body, an approach that can lead to unwanted side effects or doses that are too weak to provide effective treatment. __IMAGE_2 "Mucus barriers evolved to serve a helpful purpose: to keep things out," said Justin Hanes, an associate professor of chemical and biomolecular engineering who supervised th...

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