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Tag: "causes" at biology news

Researchers make surprise discovery that some neurons can transmit three signals at once

...ble to release all three neurotransmitters or what causes the cells to stop releasing glutamate as they mature. But according to the study's first author, Deda C. Gillepsie, Ph.D., a post-doctoral associate working with Dr. Kandler, things become more normalized within three weeks of birth, or about one wee...

Of mice and men's (and women's) contraceptives

... gametes. We think the absence of the MSY2 protein causes problems in the timing of sperm or egg development. We're working hard on understanding this mechanism." A similar human equivalent of MSY2, Contrin, has been identified by the research group and their studies indicate it is also a germ cell-specifi...

Gene therapy cures inherited liver disease in rats

... a inherited liver disease in which lack of a gene causes the accumulation of bilirubin –which, untreated, results in jaundice and brain damage, said researchers at Baylor College of Medicine in a report in the Proceedings of the Natural Academy of Sciences. "This is the first time this disease (Crigler-Na...

Discovery clarifies role of peptide in biological clock

... but its internal synchrony is uncoordinated. This causes irregular patterns of sleep and wake, for example." The study was published on-line in Nature Neuroscience on March 6, 2005. Herzog's work is funded by the National Institutes of Health. "In a light-dark schedule, these mice looked normal, but as s...

AIDS Public Awareness Campaign Expands Following Report Of Rapidly Progressive HIV

...nd further protect New Yorkers from the virus that causes AIDS. Dr. Novello said, "In light of recent reports of a drug-resistant, rapidly progressive strain of HIV in New York City, we must continue to reinforce critical HIV prevention messages to help New Yorkers protect themselves. Although, at this poi...

Molecular thermometers on skin cells detect heat and camphor

... stimuli (such as a certain temperature), and this causes them to open and allow electrically charged ions to pass through and cause an electrical potential that signals the brain. Patapoutian and his colleagues discovered TRPV3 a few years ago by conducting a computer search through an early-assembled dra...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...tions responsible for evolution are the underlying causes of cancer and aging as well. "Evolution is not an...al infections accounted for several of the leading causes of death in the United States. But then came the antibiotic revolution. Antibiotic "wonder drugs" to...

Wake Forest scientists find new combination vaccine effective against plague

...lethal dose of Yersinia pestis, the bacterium that causes plague, "the immune mice survived but the control mice succumbed in three days." Mizel and his graduate student, Anna Honko, found that injecting a protein taken from plague bacteria into a mouse ?one method of vaccination ?produces little if any re...

Sugar beet virus mutation requires Texas touch

...Rush said. Beet necrotic yellow vein virus, which causes the disease known as rhizomania, was found near Hereford in 1986 by a California researcher. A similar virus, beet soil borne mosaic virus, also was found about the same time. The two viruses are closely related, Rush said. But rhizomania is devasta...

Researchers find gene that may be at root of potato blight

...o. And the pathogen that contains this gene still causes massive amounts of agricultural damage throughout ...lence gene identified from the plant pathogen that causes late blight, a devastating disease that can destroy fields of potato and tomato plants. Plant pathog...

WHO suspends Marburg work, appeals for new funds

...ve this engagement, local belief systems about the causes of disease and traditional rituals for mourning the dead must be respected. When the public understands and accepts a few simple messages ?avoid contact with blood and other fluids when caring for the ill, don’t touch bodies of the deceased ?transmis...

Alarm pheromone causes aphids to sprout wings

...ny, now show that exposure to alarm pheromone also causes pea aphids to produce winged offspring that leave their host plant when mature. Because some plants can also release (E)-â-farnesene, they could in theory manipulate aphids into flying away. However, aphids were shown to react mainly to the frequenc...

Research into how prions act in the brain could hold the key to defeating diseases

...re very difficult to destroy. It is not known what causes the proteins to develop in this abnormal way and it is not known how they kill nerve cells in the brain. Professor Hugh Perry and colleagues of the University's School of Biological Sciences are examining exactly what makes particular nerve cells in ...

NHGRI targets 12 more organisms for genome sequencing

...pea aphid (Acyrthosiphon pisum) is an insect which causes hundreds of millions of dollars of crop damage each year. The pea aphid is a model for studying rapid adaptation because this species is exceptionally able at adapting to and resisting many pesticides. Understanding this resistance at a molecular lev...

Owl genomics presents a HEPATOCHIP for diagnosis of non-alcoholic steatohepatitis

...nd hepatocarcinoma. NASH is one of the most common causes of elevated aminotransfereases in patients referred for evaluation to hepatologists. Obesity and type-2 diabetes are associated to NASH. Since the prevalence of these diseases is increasing, the prevalence of NASH is also expected to increase and the...

Purdue researchers use enzyme to clip 'DNA wires'

...ing a "restriction enzyme," a class of enzyme that causes DNA to fragment, Kinsella said. Because magnetic components are essential for today's computer memory, the findings represent potential future applications for DNA-based structures in computers created with "molecular electronics," in which biologic...

Internet viruses help ecologists control invasive species

...emonstrated that predation by the spiny water flea causes an average loss of three zooplankton species. Thus, as the species spreads, it could cause loss of thousands of populations of zooplankton species in Ontario alone. ...

Research shows smoking adds a decade to reproductive age of IVF patients

...ale subfertility, unexplained fertility, and other causes (mainly women with polycystic ovarian syndrome or endometriosis) ?and analysed first cycle treatment results for the first three causes. Of the total, 1,828 of the first IVF treatment cycles were for unexplained subfertility. The overall live birth ...

While on trail of dioxin, scientists pinpoint cancer target of green tea

...associate at Tulane, where she is looking into the causes of childhood leukemia. ...

Researchers pioneer new gene therapy technique using natural repair process

...cells carry a mutation in hemoglobin. The mutation causes the blood cells to change shape, preventing them from flowing through the blood vessels efficiently. One out of every 12 African-American individuals carries this mutation, and one out of every 500 African-American births is afflicted with disease. ...

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