Tag: "exposure" at biology news
Genetic mutations linked to the practice of burning coal in homes in China
...g women and men who smoke, and are associated with exposure
to indoor emissions from the burning of smoky coal...d during cooking with smoky coal are comparable to exposure
levels experienced by coke oven workers. Co-authors of the study include Qing Lan, Ph.D., division ...
Cigarette smoke causes breaks in DNA and defects to a cell's chromosomes, Pitt study finds
...S. Saunders, Ph.D., and colleagues discovered that exposure
to even a small amount of cigarette smoke condensate equal to about 1/25 of a cigarette caused breaks to both strands of DNA and compromised the integrity of the cell's chromosomes. Cigarette smoke contains some 5,000 organic compounds, including ...
Safety of isoflavones in dietary supplements targeted by Illinois initiative
...w different doses of isoflavones and the timing of exposure
affect breast, brain and adipose tissues (fat). A...r growth. His lab will focus on low-level chronic exposure
to soy isoflavones and their influence on the progression of breast cancer from estrogen dependent t...
Veterans with Gulf War syndrome have damage in specific, primitive portion of nervous system
...nce attributing the veterans' illness to low-level exposure
to sarin gas a potent nerve toxin which drifted ...he Government Accountability Office confirmed that exposure
to low-level sarin in the 1991 Gulf War was more frequent and widespread than previously acknowledge...
Indiana University, EPA to study airborne PCBs
... both the EPA and Environment Canada. Humans' main exposure
to PCBs is the consumption of contaminated fish. PCBs are classified as "probable human carcinogens" by the EPA and as "reasonably anticipated to be human carcinogens" by the U.S. Department of Health and Human Services. PCBs are known to be toxic to...
Rice finds 'on-off switch' for buckyball toxicity
...rs measured how many cells died within 48 hours of exposure
to each solution, and they repeated the tests until they found the exposure
level for each that resulted in a 50 percent mortality rate. In general, the greater the degree of ...
Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria
...change from blue to other colors, depending on its exposure
to different materials. For instance, in tests with acids and detergents, they turned red or yellow. The most critical tests, say the researchers, were those involving E. coli, which were conducted to assess the material's interactions with living c...
Pollutant causes delayed flowering in plants
...uced nitric oxide. The researchers found that such exposure
enhanced the vegetative growth of the plants and significantly delayed flowering in a dose-dependent manner. Arabidopsis is a widely used model plant in plant biology research, and its genetics and biology have been thoroughly studied. "This finding ...
No role for simian virus 40 in human pleural mesotheliomas
...percent of patients with this rare cancer have had exposure
to asbestos. It has also been proposed that simian virus 40 (SV40), a contaminant in some polio vaccines administered in the 1950's and 1960's, might be a cause. However, studies reporting the detection of SV40 DNA in human tumors (including mesothel...
$2.7 million grant to support creation of virtual zebrafish atlas
...inch-long tropical fish will enjoy improved global exposure
thanks to a five-year, $2.7 million grant from the National Center for Research Resources-National Institutes of Health (NIH) awarded to Keith Cheng, M.D., Ph.D., associate professor of pathology, Penn State College of Medicine. The grant will suppor...
Targeted therapy knocks out pediatric brain cancer in mice
...tating effects of surgery, toxic chemotherapy, and exposure
to high doses of radiation," offers Dr. Curran. ...
USC study links historical increases in life span to lower childhood exposure to infection
...ase in human life span to lower childhood rates of exposure
to infectious diseases such as tuberculosis and ma...rs found that as public health efforts led to less exposure
to infectious diseases during childhood, people started living longer and better. "Most people...
9/11 search-and-rescue dogs exhibit few effects from exposure to disaster sites
...ffered either immediate or short-term effects from exposure
to the disaster sites, researchers from the Univer...st 20 years to develop mesothelioma after asbestos exposure
a major fear at all three sites the shorter life span of dogs often means a relatively shorter lat...
Simian virus 40 not associated with non-Hodgkin lymphoma, study shows
...ccine. To examine the possible association between exposure
to SV40 and NHL, Eric A. Engels, M.D., M.P.H., of ...researchers thus found no association between SV40 exposure
or infection and an increased risk of NHL. "Based on the assumption that SV40 infection would have r...
Lecture on ecology of infectious diseases
...populations of prairie dogs and to minimize public exposure
to plague. Who: Sharon Collinge, principal investigator, NSF-NIH Ecology of Infectious Diseases Program What: Lecture on plague, prairie dogs and humans When: Monday, September 20, 2004 3:30 p.m. Where: National Sci...
New research suggests early diet may play key role in protecting against childhood leukaemia
...s Nagabhusan. "These include prenatal or postnatal exposure
to radiation, benzene, environmental pollutants and alkylating chemotherapeutic drugs. Our studies show that turmeric - and its colouring principle, curcumin - in the diet mitigate the effects of some of these risk factors." In a long-running series...
Reducing allergens in the home helps inner-city children with asthma
...ortionately from the disease, primarily because of exposure
to high levels of multiple indoor allergens and tobacco smoke. "These study results are exciting because they show that changes made in the home environment can produce a reduction in symptoms comparable to that achieved with asthma inhalers," ...
New research suggests link between maternal diet and childhood leukemia risk
...ings of foods from the protein group. "Fetal exposure
to nutritional factors has a lot to do with what mom eats," said Christopher Jensen, a nutritional epidemiologist at U.C. Berkeley and lead author of the paper. "These findings show how vital it is that women hoping to get pregnant, as well as expect...
New evidence of radiation risk in childhood leukaemia
...ws of older data. Both pre-conceptual and in utero exposure
will come under scrutiny today, with factors such as cigarette smoke, electromagnetic fields and use of medication being presented for discussion. It is hoped that out of the conference which has attracted top international experts from Europe, Ame...
Genetic map of important tree genes outlined
...a basic genetic level to such stresses as drought, exposure
to cold, and pest attack," Strauss said. Using the expression of thousands of genes as "metabolic fingerprints," a method that is becoming routine with the advent of gene chips, researchers can also make major strides in understanding the physiologic...
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