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Tag: "increase" at biology news

Cancer tip -- Nanoparticles can damage DNA, increase cancer risk

...could potentially lead to mutations and ultimately increase the risk of cancer." One problem is that, while it’s clear that some nanoparticles can be more toxic than others, there’s not enough data as yet to determine the most dangerous types. "A lot is unknown about nanoparticle function, but clearly ...

Researchers first to map gene that regulates adult stem cell growth

...apy that can be given. But if Latexin were used to increase the stem cell count, patients would be able to rec... Another possible use for Latexin would be to help increase the number of stem cells available in umbilical cord blood, which also is used to transplant healthy...

Out of Africa -- Bacteria, as well

...ger, even when the population starts once again to increase in number. Since the Homo sapiens populations usually had to pass through several genetic bottlenecks on their way across the globe, their genetic diversity declined the further they journeyed from their origin in East Africa. Scientists have now ...

New research shows that flu is a trigger of heart attacks

...y deaths. This calls for more intensive efforts to increase the vaccination rate in people at risk of coronary heart disease. This may be especially important in an influenza pandemic when we would expect to see high mortality amongst the elderly and those suffering from heart problems or who have multiple co...

Growth hormone is not the anti-aging bullet for healthy adults

...amins, testosterone and other hormones, is said to increase muscle strength and mass, decrease body fat, improve mood and motivation, increase exercise capacity, increase bone density and (wink, wink) make wives and girlfriends happy. Despi...

Ethanol vehicles pose a significant risk to human health, study finds

...els of two carcinogens, benzene and butadiene, but increase two others-formaldehyde and acetaldehyde,'' Jacobs...acobson said. ''These mortality rates represent an increase of about 4 percent in the U.S. and 9 percent in Los Angeles above the projected ozone-related death ...

Elderly spinal cord injuries increase five-fold in 30 years, Jefferson neurosurgeons find

...r, they also found that these patients have had an increase in survival over this period. Admi...me time period, the researchers found. "This increase is likely a result of an aging population and propensity for these patients to have SCI with minor t...

Scientists discover a new risk factor for Alzheimer's

...ssion--in either cell cultures or mice--you get an increase in the production of amyloid-beta. Now we can add our new observation that variants of the SORL1 gene are associated with an increased risk of Alzheimer's." St George Hyslop said that other researchers need to replicate the results in other groups....

Strawberry daiquiris -- the extra-healthy cocktail?

...d that treating the berries with alcohol led to an increase in antioxidant capacity and free radical scavenging activity within the fruit. While such a boost helped the berries resist decay, the same compounds would also be expected to make the strawberries healthier to eat. Dr Korakot Chanjirakul and coll...

Birth rate, competition are major players in hominid extinctions

...most, while the others had large litters and could increase their populations at a much faster rate. Paranthropus simply could not compete reproductively and could not alter its choice of food. "We find that the early members of the genus Homo who succeeded were super ecological opportunists," says Jablon...

Lead with a poisonous electron shield

...onment, the annual production of lead continues to increase worldwide because lead is still used in batteries, glass, and electronic components. However, there has thus far been little research into what, at a molecular level, causes the toxic effects of lead. French researchers have now applied quantum chemi...

Flavanols in cocoa may offer benefits to the brain

...avanol rich cocoa consumption are paralleled by an increase in the circulating pool of nitric oxide, a critical molecule in the circulatory system that helps dilate blood vessels and keeps them pliable. Hollenberg fed flavanol-rich cocoa to healthy volunteers who were over age 50 and observed a “striking bl...

Parasite infection may benefit MS patients

...ssively germ-free environment may contribute to an increase in allergies, holds that a decline in infectious d...he uninfected group, 11 patients showed an overall increase in EDSS. Since MS involves an inflammatory response associated with the production of certain regula...

Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent

... ascertain how manufacturers accomplished the increase -- not only by intensifying the concentration of n...modifying several design features of cigarettes to increase the number of puffs per cigarette. The end result is a product that is potentially more addictive. ...

Uganda's mountain gorillas increase in number

...verall growth of the population, showing an annual increase of one percent over the past decade. The age composition of the population shows a healthy distribution of adult and immature classes, including infants and juveniles. Other findings are that gorillas are not using the eastern side of the park, a pos...

Active ingredient in common Chinese herb shown to reduce hypertension

....11, respectively, in the hamster cheek pouch. The increase in arteriolar diameter ratio was significant relative to the vehicle for each concentration as well as for comparison between the two concentrations of tanshinone IIA. Conclusions As a result of the findings the researchers concluded that ta...

Largest genomic search finds genes that may contribute to autism

... more of these genes or certain ones is thought to increase a child's likelihood of being born with autism or a more severe form of the disorder, just as there are genes that heighten a person's chances for inheriting breast cancer or heart disease. Autism is actually a spectrum of disorders that inhibits ...

Brain networks strengthened by closing ion channels

...ients with schizophrenia or bipolar disorder would increase vulnerability to cortical network disconnection and profound PFC deficits. This may be especially problematic during exposure to even mild stress, which may explain the frequent worsening of symptoms following exposure to stress. "We find it remarkab...

Antibody signal may redirect inflammation to fuel cancer

...program: inducing leukocytes to boost cell growth, increase the number of blood vessels and "remodel" tissue in the area -- all of which help cancer develop. The finding adds a critical and surprising detail to the emerging view that inflammation, usually a helpful response to invading pathogens, can becom...

Biologists produce global map of plant biodiversity

...the development of drugs or alternative fuels—that increase in value with their richness," says Jetz, an assistant professor of biology at UCSD and the senior author of the paper. "Tropical countries such as Ecuador or Colombia harbor by a factor 10 to 100 higher plant species richness than most parts of the ...

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