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Tag: "causes" at biology news

NASA study finds snow melt causes large ocean plant blooms

... over the Arabian Sea. This difference in pressure causes winds to blow from the Southwest Arabian Sea bringing annual rainfall to the subcontinent from June to September. In the Western Arabian Sea, these winds also cause upwelling of cooler nutrient-rich water, creating ideal conditions for phytoplankton ...

New Estimates For The Causes Of Child Deaths Worldwide

The most accurate estimates of the causes of child deaths to date, published in the March 26...outh-east Asia region. The authors state that the causes of child deaths can be addressed through existing, available, and affordable interventions. Reducing...

Mystery Blood Vessel Disorder Implicated In 'Mini' Strokes

...or further research. It may be that dolichoectasia causes or contributes to small vessel disease, and/or tha...usually found to have high blood pressure, but the causes of the disease are unknown. Using MRI, Amarenco and his colleagues studied 510 patients who had suf...

Brain Scans Reveal How Gene May Boost Schizophrenia Risk

...ne that makes the enzyme that breaks down dopamine causes a complete flipflop ?not a mere difference in degree ?in dopamine activity in these two brain areas," explained NIMH's Dr. Andreas Meyer-Lindenberg, who, along with Dr. Karen Berman and colleagues, reported their findings in the April 10, 2005 online...

Brain-injury rehabilitation depends on acetylcholine circuitry

...ong believed that rehabilitation from brain injury causes a rewiring, or plasticity, of brain circuitry--called a "reorganization of cortical motor representations"--to reestablish connections that control muscles. However, the specific type of brain circuitry on which this plasticity depended was not known...

Turning viruses into allies against cancer

...lopment, including modifications of the virus that causes measles and another, the herpes simplex virus, res... investigator. Liver cancer is one of the leading causes of cancer death worldwide, causing nearly a million deaths per year. Despite a variety of differing ...

Chromosome Deletion Predicts Aggressive Neuroblastoma

...oblastomas," said Dr. Attiyeh. It is unknown what causes the deletion of genes on chromosome 11, at a location designated chromosome 11q23. However, the loss of material at that site apparently removes the protective effect of a tumor suppressor gene, and thereby allows the tumor to grow. Patients in the s...

Roots Engage in Underground Chemical Warfare

...r strain of Pseudomonas syringae, a bacterium that causes disease in both tomatoes and Arabidopsis, has a seemingly fail-safe mechanism to overcome the plant's defenses. The bacterium not only survives exposure to the antimicrobial substances, it also blocks the plant's ability to produce them. Both Vivanc...

What's really making you sick? Plant pathologists offer the science behind Sick Building Syndrome

Science-based identification of mold and other causes of Sick Building Syndrome may improve its manageme...em and requires objective inspections for possible causes to detect and manage SBS. Skaria cites a need for more plant pathologists and mycologists to study b...

MUHC scientists describe genetic resistance to rampant virus

...egalovirus (CMV)--a member of the viral group that causes some of the world's most prevalent diseases, such as herpes, chicken pox and mononucleosis. The groundbreaking research published in Nature Genetics last week, provides a roadmap for the development of human therapies for CMV, which could prolong the...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...h is essential for the function of the enzyme, and causes aplastic anemia in patients who have this mutation. "There are five known disease mutations in this part of the RNA identified so far. For three of them, it was not clear why they would be a problem for telomerase, but by solving the structure, we n...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

...idosis or AMD, an inherited disease in humans that causes severe mental retardation and skeletal abnormalities. Cats with AMD do not live more than six months. Children born with the worst form of the disease rarely survive into their teens. "Through gene therapy, we replace a 'broken' gene responsible for...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...n of human-caused nutrients in these special areas causes extra blooms of phytoplankton." Yaqui Valley agriculture To assess the impact of agricultural runoff on the gulf, the Stanford scientists turned their attention to one of Mexico's most productive coastal farming regions-the Yaqui River Valley, whic...

UCSD research reveals mechanism involved with type of fatal epilepsy

...ar mechanism defining how loss of laforin or malin causes Lafora disease has remained unclear. Jack E. Dixon, Ph.D., UCSD dean of scientific affairs and professor of pharmacology, and colleagues at UCSD investigated the role of malin in Lafora disease and found that malin physically interacts with laforin ...

Protein prevents detrimental immune effects of bacterial sepsis

...eant to clear the pathogen and its toxins actually causes damage to the host's own tissues when it goes into...act that bacterial sepsis ranked among the top ten causes of death in both adults and neonates in 2002 in the United States (Natl Vital Stat Rep 2005, 53:1-89...

Taking the piste out of Alpine vegetation

...tes. It should be avoided wherever possible, as it causes lasting damage that cannot be overcome by revegeta... artificial snow on vegetation and found that this causes changes in species composition, with snowbed and late-flowering species increasing in abundance whil...

Elephant seal pups suffer from ocean warming

...anges, as an increase in water temperature usually causes their prey to migrate to cooler areas, depleting local food resources and resulting in pup starvation. Elephant seals, which feed in deep waters, were previously thought to be better buffered against ocean temperature changes than other sea mammals. ...

FDA Warns About Antipsychotic Drugs and Elderly

...out 1.6 to 1.7 times that of placebo. Although the causes of death were varied, most seemed to be either heart-related (such as heart failure or sudden death) or from infections (pneumonia). The atypical antipsychotics fall into three drug classes based on their chemical structure. Because the increase in ...

Findings have implications for tracking disease, drugs at the molecular level

...ualize the particles is at a wavelength range that causes only minimal damage to most biological tissue. The findings will be published in the June issue of Nano Letters. ...

Secret of smallpox's success may lead to bioterror cure

...n most people, exposure to vaccinia generally only causes a mild infection in humans before the immune system responds and eliminates the virus, also leaving immunity to smallpox and other pox viruses in its wake. "And there has been anecdotal evidence that if you get exposed to smallpox and get vaccinated...

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