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Tag: "effect" at biology news

Erectile dysfunction in diabetes is due to selective defect in the brain

...iments were conducted. Experiment one examined the effect of L-NMMA on NMDA mediated behavioral responses in...d diabetic rats; the third experiment observed the effect of diabetes on nNOS protein in the PVN; the fourth experiment measured NMDA mediated behavioral resp...

Researchers first to map gene that regulates adult stem cell growth

...journey. "We think these findings will have an effect on the broad understanding of the molecular mechanisms that are important to stem cell regulation, including how some stem cells turn cancerous," Van Zant said. "The findings also will help scientists develop effective methods to modulate stem cell n...

Global 'sunscreen' has likely thinned, report NASA scientists

... and warm Earth's surface, you're going to have an effect on climate and temperature," said lead author Mich... important as the direct effects." The combined effect of global dimming and warming may account for why one of the major impacts of a warmer climate ?the ...

Dual gene therapy suppresses lung cancer in preclinical test

...uced cancer separately but had their most powerful effect when administered together, cutting the number of ... therapy," Roth says. "These genes don't have much effect on normal tissue or normal cells when they are overexpressed. It's really just cancer cells where th...

New research shows that flu is a trigger of heart attacks

...adjid ?who directs a research lab dedicated to the effect of flu on the cardiovascular system ?pointed out that the implications of the research were even more important with a looming flu pandemic when a much higher percentage of the population could be expected to catch the illness. "In the majority of...

HIV protein enlisted to help kill cancer cells

...sms in cancer cells and augmented the cell-killing effect of radiation. When mice with malignant tumors were...infections and found that TAT-Bim had the unwanted effect of increasing cell death. Hawkins wondered if TAT-Bim could be effective against cancer, and a produ...

Penn study on lung-infecting bacterial enzyme suggests new approach to cystic fibrosis treatment

...rity of CF symptoms did not match the pathological effect of the CF mutation alone. The study was published this month in the Proceedings of the National Academy of Sciences. The research, conducted by Zhe Lu, MD, PhD; Yajamana Ramu, PhD; and Yanping Xu, MD, PhD, of the Department of Physiology, shows th...

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

...d lifespan. Although the existence of some kind of effect is known from studies of monkey packs, in humans i...ult up till now to separate any perceived positive effect of "status" from the effect of simple greater wealth that status often brings. Nobel Prize winners w...

Sleep disturbances affect classroom performance

As a night of bad sleep can have an adverse effect on an adult’s performance at work the next day, an insufficient amount of rest can also have a negative impact on how well middle or high school students perform in the classroom. A study published in the February 15th issue of the Journal of Clinic...

Applied scientists create wrinkled 'skin' on polymers

... says Vaziri. "At the moment we are looking at the effect of ion beam energy and have been able to reduce the wavelength of the wrinkles to 50 nanometers. Manipulation at such a small scale makes this method even more attractive. We are also building multifunctional microfluidic devices for the mixing of fl...

Antivirals effectively curb influenza virus

...rals to protect against influenza is critical, the effect of these drugs on infectiousness also has importan... 2000 to 2004, which were designed to estimate the effect of post-exposure antiviral treatment on preventing influenza within households. Two of the trials we...

Sunshine pill for prostate cancer in 2009

...ed a novel formulation that reproduces the healing effect without the dangerous side-effects of a vitamin D overdose. If the on-going phase III trial goes to plan, the new drug should be available in 2009, reports Chemistry & Industry, the magazine of the SCI. 'If the results of the phase III trial...

Stem cells decrease ischemic injury and restore brain function

... stem cells induce the development of a protective effect in this same area," explains De Simoni. "Therefore, it is not necessary, as proposed in past studies, for stem cells to turn into neurons in order to protect the brain from ischemic injury and restore brain functions. Their presence in brain tissue i...

Some caterpillers just don't want to grow up

...et, according to the currently available data, the effect seems to be too weak to fully explain the large proportion of caterpillars delaying development. Based on a simple model expansion, the scientists predict that added benefits achieved by slow-developers after emergence would also tip the balance in f...

Intravenous nanoparticle gene therapy shows activity in stage IV lung cancer

..." Lu says. The only clinically significant side effect so has been fever, but Lu says premedication with a steroid and diphenhydramine has eliminated that so far. Previous gene therapy clinical trials also involved direct injection into tumors. "This is the first time anyone has shown that a gene c...

Eating less salt could prevent cardiovascular disease

...e nineties which had been conducted to analyse the effect that reducing salt in the diet had on blood pressure. All the participants had high-normal blood pressure (pre-hypertension). They were therefore at greater risk of developing cardiovascular disease. 744 people took part in the first Trial of ...

Studies yield insight into the numerical brain

...in the [parietal cortex] held true, the adaptation effect would be observed within and across notations. In ...al representation, we expected that the adaptation effect would be modulated by the notation type. This result would suggest that distinct neuronal population...

Active ingredient in common Chinese herb shown to reduce hypertension

...re. Summary of Methodology To assess the effect of tanshinone IIA, the protocol consisted of several parts. The researchers applied the 2-kidney-1-clip protocol to induce renal hypertension in male golden Syrian hamsters. The animals were anesthetized and a retroperitoneal approach was used to pla...

Largest genomic search finds genes that may contribute to autism

...n interventions earlier, which can have a dramatic effect for some children," Dawson said. A second phase of the Autism Genome Project also was announced today to continue the effort to discover the genes that cause the disorder. This $14.5 million phase is being funded by Autism Speaks, the British Med...

Knocking out survival protein could aid leukemia treatment

..., by itself, cause CLL cells to die, and that this effect might enhance the activity of rituximab," says fir...val protein, causing many of the cells to die. The effect was the same even in cells that came from patients with advanced cancer or from patients with tumors...

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