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Tag: "effect" at biology news

Insomnia drug can improve brain function

...ons one by one, it was concluded that the positive effect was due to zolpidem. "This phenomenon was so repro...e. The researchers systematically assessed the effect of zolpidem on motor and cognitive function and explored its effect on brain activity using positron...

Scientists find new genes for Crohn's disease

...be harmful, while others may be helpful or have no effect at all. The comparison of these SNPs between patients with Crohn's disease and people without the disease identified multiple variations in several genes that were strongly associated with Crohn's disease. These findings were then retested in two ...

Putting an old drug to a new use

...collaborators found out that nifedipine exerts its effect on iron metabolism by acting on a molecule called ...ine, but how exactly the compound brings about its effect is still unknown. Nifedipine is known to block membrane channels that control Ca2+ influx into cells...

Migration played key role in HIV spread in South Africa

... tobacco smoke on pulmonary clinical outcomes, the effect of marijuana smoke has been poorly understood," sa... PsychINFO and EMBASE databases that evaluated the effect of marijuana smoking on pulmonary function and respiratory complications. Of the 34 articles that me...

Long-term marijuana smoking leads to respiratory complaints

... tobacco smoke on pulmonary clinical outcomes, the effect of marijuana smoke has been poorly understood," sa... PsychINFO and EMBASE databases that evaluated the effect of marijuana smoking on pulmonary function and respiratory complications. Of the 34 articles that me...

Scientists find potential 'off-switch' for HIV virus

...proteins the gene creates, resulting in a snowball effect that is difficult to stop," Weinberger said of the onset of full-blown infection. Mechanisms do exist to halt the process, however. For example, another enzyme within the affected cell called SirT1 is capable of pulling the chemical tail off the ...

Smoking ban dramatically reduces air pollution in Irish pubs

...ociety in Dublin, and four associates examined the effect of the world's first national smoking ban on environmental tobacco smoke exposure in 42 Dublin pubs and among 73 male bar staff members who received pre- and post-ban lung function tests. Participants were tested prior to the March 29, 2004 national ...

Study to explore using magnets to correct 'sunken chest'

...its safety. The magnets have been found to have no effect on the heart or other body parts, and studies have demonstrated that long-term exposure to magnetic fields is not harmful. Sunken chest had long been considered a cosmetic defect. But recent studies have determined that while not life-threatening,...

Canadian study shows bilingualism has protective effect in delaying onset of dementia by four years

...rence remained even after considering the possible effect of cultural differences, immigration, formal education, employment and even gender as influencers in the results. "There are no pharmacological interventions that are this dramatic," says Dr. Freedman, who is Head of the Division of Neurology, and ...

Does God answer prayer? ASU research says 'yes'

...rvard Medical School that measured the therapeutic effect of intercessory prayer in cardiac bypass patients....ng for differences in sample sizes, a net positive effect for the prayer group is produced. “This is the most thorough and all-inclusive study of its kind ...

Scripps research team discovers a chemical pathway that causes mice to overeat and gain weight

...to prevent fever response in mice, and it was this effect that the Scripps Research team was originally studying. Previous research on mice lacking the receptors had focused on fever inhibition until mice were about three months old. The team wanted to better understand the process by studying if fever inhi...

Failure to meet United Nations sanitation target could affect millions of the world's poorest

...the quality of water at the source may have little effect on a household's health if, for example, that wate...s, clean water and sanitation also have a positive effect on education and the economy, Davis added. "Having sanitation facilities in schools has a differenti...

Large size crucial for Amazon forest reserves

...estion is, does isolation aggravate this pervasive effect of size. It does for many species, but surprisingly not for many others. The main methodological difficulty of this study, say the authors, was that birds are hard to detect. When one samples a plot of forest it is easy to miss species that actua...

Researchers urge monitoring of bone health during chemotherapy

...e cancer patients." Although G-CSF had a strong effect on bone metastasis in the experimental mice, early clinical trials in humans using G-CSF with chemotherapy have so far shown no adverse effects on survival and no increase in bone metastasis. In fact, breast-cancer patients undergoing dose-dense chem...

Finnish scientists discovered a new approach to treat virus-induced lymphomas

...uces massive apoptosis in PEL cells. The cytotoxic effect of Nutlin-3a was specific for the KSHV-infected cells since Nutlin-3a did not induce apoptosis in lymphoblastoid cell lines transformed with another human tumor virus, the Epstein-Barr virus, despite of their wt p53 status. Moreover, the research...

Exploring the molecular origin of blood clot flexibility

...velop a model that can then be used to predict the effect of changes at one scale on clot properties at other scales. Such a model should be useful for developing prophylactic and therapeutic treatments for many aspects of cardiovascular disease and stroke, suggest the investigators. ...

White blood cells in lung produce histamine seen in allergies

...rophils in turn produced histamine. "It's a direct effect of the mycoplasma bacteria on neutrophils. They in... is very considerable." The neutrophil-histamine effect was similar in the wild-type mice, reports Caughey: "Histamine levels from neutrophils blew right pa...

Prenatal cocaine's lasting cellular effects

...heir ability to function normally. Though this effect has not yet been assessed in cocaine-exposed child...the cells. "The fascinating thing is that this effect appears permanent," said Stanwood. This implies that cocaine exposure during a brief, sensitive per...

Warming oceans threaten Antarctic glaciers

...burgh and University College London determined the effect that Antarctica and Greenland were having on global sea level in a comprehensive evaluation of the Earth’s ice sheets. They found that together these two ice-sheets were responsible for a sea level rise of 0.35 millimetres per year over the past deca...

Twin studies reveal genetic components leading to cardiac and kidney disease

..., we can now factor in genotypes and determine the effect of specific genes on traits," O’Connor said. By s...temic inflammation. This study indicates a strong effect of heredity in the occurrence of C-reactive protein or CRP, a blood protein that serves as a marker ...

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