Tag: "exposure" at biology news
Munching microbes could cleanse arsenic-contaminated groundwater
...e Ganges Delta of Bangladesh, for example, chronic exposure
to arsenic has been linked to serious medical conditions, including hypertension, cardiovascular disease and a variety of cancers. "The threat extends to Central Illinois, where there are very high levels of arsenic contamination in a number of wells...
Military hazards are greater for Native Americans, according to sociological research
...tudy demonstrates that much of the disproportional exposure
of Native Americans to environmental dangers throu... Pentagon placed Native Americans at great risk of exposure
to noxious military activities." Because national security restrictions make it difficult to gain in...
Mail-order drugs exposed to extreme heat become less effective
...st medications have storage requirements regarding exposure
to excessive temperatures," said study coauthor Richard A. Robbins, MD, FCCP, Carl T. Hayden Veterans Affairs Medical Center. "We strongly advise that patients avoid exposing medications to the extreme heat found in mailboxes and car interiors and i...
Common household fragrances may be harming aquatic wildlife, study finds
...were removed and washed. To see if this short-term exposure
affected the animal's defense system, the gills we...nd the intestines," Luckenbach explained. "Perhaps exposure
to chemical fragrances could compromise the transporters, making it easier for pollutants to enter t...
VYTORIN (TM) superior again to Lipitor at lowering LDL (bad) cholesterol
...rst year. Due to the unknown effects of increased exposure
to ezetimibe (an ingredient in VYTORIN) in patients with moderate or severe hepatic insufficiency, VYTORIN is not recommended in these patients. The safety and effectiveness of VYTORIN with fibrates have not been established; therefore, co-administr...
Gimli gobblers Mercury scientists to conduct unique human experiment next week
... and Innu communities in Labrador, examining their exposure
to mercury through the fish they eat. The researc...iduals in the communities with the highest mercury exposure
actually revealed the lowest body mercury levels. "There's a huge discrepancy between mercury exposu...
Gene found to defend against environmental pollutants and pulmonary emphysema
...y player in protection even in the case of chronic exposure
to pollutants." In 2002, Dr. Biswal and colleagues...le in lung inflammatory diseases caused by chronic exposure
to environmental agents. By exposing mice to cigarette smoke, the researchers were able to learn whi...
Gut microbes can open gates in fat cells
...k to limit fat storage in distant fat cells. After exposure
to the normal community of gut microbes, the previously germ-free mice increased their fat stores by a remarkable 60 percent in just two weeks, even as they began to consume less food. As do people who gain fat, the mice also became insulin resistant...
Scientists raise concerns about second wave of 'mad cow' prion infection
...rals are necessary in the U.S. at this time. "If exposure
to an infectious agent can be stopped, then the disease can be stopped," said Dr. Asher. "Physical removal of vCJD from blood appears to be the most promising line of attack." Dr. Asher also commented that species barrier protection from TSEs other...
Molecular switch provides clues to remarkable adaptability of human pathogen
...ers demonstrated that mice develop pneumonia after exposure
to normal P. aeruginosa but are resistant to infection with a mutant variant of P. aeruginosa lacking RetS. Surprisingly, the less virulent P. aeruginosa with mutated RetS formed bacterial communities, called biofilms, much earlier than the normal b...
UO study is first to link histamine receptors to heat stress
...kin blood flow is a key factor in compensating for exposure
to prolonged heat waves. "These are the same receptors that are involved in seasonal allergies for which people take antihistamines," says Wong, who is the lead author on an article describing his findings in the November issue of the Journal of P...
By impounding iron, FHC foils cell suicide, fuels inflammation
...closer at each gene associated with survival after exposure
to TNF-, they found that FHC was the "pivotal mediator" preventing cell death. Next, they tracked down the mechanism FHC uses to block apoptosis. They found that by hiding iron, FHC prevented the accumulation of oxygen radicals V extremely unstabl...
UCSD researchers find effective treatment for unusual fever syndrom caused by cold exposure
...ash, fever, joint pain and flu-like symptoms after exposure
to cold conditions as mild as an air-conditioned r...nd flu-like symptoms. The treatment prior to cold exposure
prevented the clinical and laboratory manifestations of the disease in the FCAS patients. Anakinra ...
Safety of bismuth bullets questioned: Study
...imal studies have suggested that excessive bismuth exposure
may be linked to blood, liver, kidney and neural problems. Gough says that populations who rely on potentially contaminated food sources, such as First Nations people, may be at greatest risk. ...
Study links ozone, mortality in urban areas
...ew days, not the impact associated with a lifetime exposure
to high ozone levels," said Bell. "This reduction of ozone is modest given available technology." The primary sources of ozone pollution are vehicles, industrial sources and power plants. Bell said by driving less, taking public transportation, red...
Abundance of myostatin in infected swine may result in reduced muscle mass
...retion. The drop in growth began three days after exposure
to PRRSV and continued for the remaining two weeks of the trial. PRRSV infects macrophages, a type of white blood cell that attacks pathogens. The virus is spread from the lungs as the macrophages migrate to other tissues. Before infected mac...
Tips from the Journals of the American Society for Microbiology
...existing E. coli O157:H7 cells remain viable after exposure
to both synthetic saliva and gastric juice, they began to grow at a significant rate when exposed to the pancreatic juice. "From a food safety point of view, this implies that the industrial processes used to manufacture dry sausages must be designed...
University of Texas at Austin researchers identify drug-tolerance mechanism in flies
...esponse of fruit flies (Drosophila) to a 15-minute exposure
to benzyl alcohol coated on the inner walls of test tubes. Flies that had had one previous exposure
to the organic solvent recovered more quickly from being knocked out by the drug than flies that wer...
US trees affected by growing number of health concerns
...the non-oak plants do not die as a result of their exposure
to the pathogen, they may help the disease to spread. Another tree that has recently been seriously harmed by a Phytophthora in Northeastern U.S. is European Beech. The new beech disease is caused by a different species of Phytophthora, but plant pat...
Findings show how toxic proteins rob Alzheimer's patients of memory
...ppening to the gene Arc after only five minutes of exposure
to ADDLs, and those changes were sustained for an unexpected long time. Our next step is to understand why ADDLed synapses have trouble staying connected and storing memories." ADDLS are small, soluble aggregated proteins. The clinical data st...
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