Tag: "effects" at biology news

Fruit flies and global warming -- Some like it hot

...("heat hardening") has been known to have negative effects on Drosophila. But Loeschcke and Hoffmann discover...s an overall balance between negative and positive effects of the heat treatment at intermediate temperatures. As Volker Loeschcke puts it, "a small amount of ...

New test helps identify hepatitis C patients at high risk of developing cirrhosis

...nfortunately is very expensive, has multiple side effects and a suboptimal response rate for most patients,...der deferring treatment, avoiding unnecessary side effects and expense of current therapy." Last June, Celera licensed Specialty Laboratories of Valencia, ...

CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes

... Managers of the GBR have long been examining the effects of run-off of sediments, including pesticides, her...ectly flow to the outer reef is spared the direct effects of such river floods. "A re-think is needed now that we know where flood plumes go," says CSIRO ...

Clues to gene expression in cystic fibrosis will guide research

...an ideal drug option, as it may cause serious side effects for some patients, including ear and kidney damage. The authors suggest that other drugs, such as amikacin or PTC124, with a comparable mode of action and fewer side effects, may have treatment potential. The in vitro method used to predict the tria...

Does a peptide affect the heart's response to social isolation?

A team of researchers investigating the effects of oxytocin, a peptide produced by the brain that regulates social behavior, has found that it can prevent detrimental cardiac responses in adult female animals exposed to social isolation. The findings may provide further insight into how these mech...

100 percent juices found as beneficial to health as fruits and vegetables

...es that looked at risk reduction attributed to the effects of both fiber and antioxidants. As a result, they determined that the positive impact fruits and vegetables offer come not from just the fiber but also from antioxidants which are present in both juice and the whole fruit and vegetables. This 20...

Genes and genius: Researchers confirm association between gene and intelligence

...eam doesn't yet understand how the gene exerts its effects on intelligence. Intelligence was one of the fi...n the past were those that had profoundly negative effects on intelligence ?genes that cause mental retardation, for example. Those that contribute to less dra...

Novel laboratory technique nudges genes into activity

...r. Corey said that while it’s clear the activating effects of the new technique are occurring at the chromosome level, and not at the messenger RNA level, more research is needed to understand the exact mechanism. Although the RNA strands the researchers introduced ?dubbed antigene RNA ?were manufactured,...

Major link in brain-obesity puzzle found

... after being fed a high-fat diet that caused those effects in other mice. “Obesity, whether in mice or humans, is the product of an altered balance between energy intake and energy use. The imbalance is linked to alterations in leptin and insulin signaling that lead to excess weight gain and Type 2 diabe...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...may inhibit recovery of oysters and clams from the effects of overexploitation, disease, habitat destruction,... beyond the ray's northernmost limit. Ecosystem effects of increases in the other ray, skate, and smaller shark species are unknown, but like the cownose ra...

Pharmaceutical compounds found in nation's fresh water

...waste water. "We don't know what toxicological effects these detectable concentrations of pharmaceuticals pose, although typical concentrations in one liter of ground water are usually much lower than a typical human therapeutic dose," says lead author Emily Godfrey. While such low concentrations do n...

Cells selectively absorb short nanotubes

...s and impurities. The team chose to isolate the effects of nanotube length. They first adsorbed short DNA molecules onto the nanotubes because this renders them soluble in water and allows them to be sorted and separated by length. The researchers then exposed human lung fibroblasts to solutions containin...

Widely used hepatitis B drug spurs HIV drug resistance

...formation currently states that is has no clinical effects on HIV. According to Thio, some co-infected pa...r immune system and to avoid the debilitating side effects of anti-HIV medications. In the Hopkins study, researchers found in both laboratory and clinica...

Light wine intake is associated with longer life expectancy in men

...fe," Streppel said. "This enabled us to study the effects of long-term alcohol intake on mortality." Researc...rink wine," Streppel said. "The cardio-protective effects of alcohol and wine only held up for light alcohol consumption in middle-aged men. Heavy alcohol co...

Common cold virus may kill breast cancer cells

...cessful we could have something that produces side effects as harmless as a mild, common cold-like infection yet it could successfully treat breast cancer," Ms Skelding said. Latest research to be revealed at Canberra briefing The Skelding project, and other ground-breaking research, will be discussed ...

Dig deeper to find Martian life

...re radiation-resistant and are able to survive the effects because, when active, they successfully repair the...e subsurface radiation environment on Mars and its effects on the survival of dormant cells we have been able to accurately determine the drilling depth requir...

Performing surgery on a beating heart may be safer

...is a safe option that leads to fewer negative side effects for bypass patients. This review is featured in Jo...ally challenging for the surgeon, keeps these side effects low and allows for a quicker recovery. “If the surgeons are skilled enough to perform the surgery...

Prion disease treatable if caught early

Studies in mice have indicated that the effects of prion disease could be reversed if caught early...atments in a new way: by analyzing their cognitive effects in prion-infected mice. The researchers, Giovanna Mallucci and colleagues, reported their findings ...

Mechanical 'artificial hearts' can remove need for heart transplant by returning heart to normal

...ts and we believe that this is due to the additive effects of the particular combination therapy used. The improvement observed was far greater than what has been reported to date for any other therapy in patients with severe, but less advanced, forms of heart failure. "The study also highlights the fact ...

St. Jude announces breakthrough in eye cancer treatment

...of the tumor, but does so without causing the side effects common with standard chemotherapy. The treatment a...vein and then circulates, often causing toxic side effects that are especially challenging in children. After demonstrating that nutlin-3 is effective when a...

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