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Tag: "exposure" at biology news

New study finds how cells with damaged DNA alert the immune system

... genetic material -- the DNA damage pathway -- was exposure to radiation and chemotherapy drugs. They found that cells in which the DNA damage pathway was triggered were the ones that exhibited an increase in the expression of special proteins on the cell surface. These "ligands" on the membrane are specific...

Renewed hope for Parkinson's patients

... genetic material -- the DNA damage pathway -- was exposure to radiation and chemotherapy drugs. They found that cells in which the DNA damage pathway was triggered were the ones that exhibited an increase in the expression of special proteins on the cell surface. These "ligands" on the membrane are specific...

NIEHS launches website with information for assessing environmental hazards from Hurricane Katrina

...nformed decisions about the uncertainty of risk of exposure and potentially enable us to better understand the links between exposure and disease, "said William A. Suk, Ph.D., Director of the NIEHS Superfund Basic Research Program. ...

FDA approves child-friendly AIDS medicine

...nformed decisions about the uncertainty of risk of exposure and potentially enable us to better understand the links between exposure and disease, "said William A. Suk, Ph.D., Director of the NIEHS Superfund Basic Research Program. ...

Does manganese inhaled from the shower represent a public health threat?

...r extrapolated data from rodents to estimate human exposure to manganese during showering. They found that after 10 years of showering in manganese contaminated water, children would be exposed to doses of manganese three times higher than doses that resulted in manganese deposits in the brains of rats. Adult...

Software 'agents' could help unmask reality of disease clusters

... researchers to identify, for example, the risk of exposure to lead associated with urban highways or clusters of cancer cases. "Such widespread concerns can only be addressed using micro data and access to this often involves lengthy and cumbersome procedures through review boards and committees for approva...

Bacteria in Household Dust May Trigger Asthma Symptoms

... nearly three times greater among individuals with exposure to high levels of endotoxin in the bedroom.?/p>...nits on bedroom floors. “Interestingly, endotoxin exposure worsens asthma symptoms in adults, regardless of whether an individual has allergies or not" said Pe...

Prenatal exposure to famine increases risk of schizophrenia

...ucted a study to test the hypothesis that prenatal exposure to famine would increase the rate of schizophrenia...Our study strongly supports the view that prenatal exposure to famine increases the risk of schizophrenia in later life. Using a much larger sample size with cl...

New antibody shows promise as cure for anthrax

...om anthrax when administered both before and after exposure to the disease. Since those findings, Dr. Rober...es in the nasal passages of guinea pigs, mimicking exposure to inhalation anthrax. The doses were 250 to 625 times what would ordinarily be lethal to 50 percent...

Many cats unaffected by catnip, C&EN reports

...he characteristic set of behaviors associated with exposure to catnip. These behaviors generally start with sniffing, licking and chewing, followed by head shaking, body and head rubbing, and then repeated head-over-heels rolling, McDaniel explains. While neurologists don’t yet have a thorough knowledge of wh...

Anthrax stops body from fighting back, study shows

...body and eat invading bacteria. Just two hours of exposure to the lethal toxin blocks the neutrophils' ability to produce these filaments by nearly 60 percent, paralyzing themand allowing the anthrax to move freely in the body, according to research released last week in The Journal of Infectious Diseases. ...

Agricultural workers at increased risk for infection with animal flu viruses

...e study results strongly suggest that occupational exposure to pigs significantly increases the risk of develo...d or no symptoms in both pigs and humans. However, exposure to swine flu virus at a 1988 Wisconsin county fair resulted in serious illness for 50 swine exhibito...

New factor implicated in allergy and asthma attacks

... that you need both oxidative stress and antigenic exposure to get a robust allergy or asthma attack, and also that the first few minutes of the exposure are critical," Boldogh said. "The antigen exposure has to happen in parallel with oxidative stress, ...

Prenatal exposure to marine toxin causes lasting damage

...ral effects of the toxin in animals after prenatal exposure to domoic acid levels below those generally deemed...s of the human population are protected from toxic exposure to domoic acid," he continued. The researchers reported their findings in a forthcoming special is...

Chernobyl: The true scale of the accident

... thousand people could eventually die of radiation exposure from the Chernobyl nuclear power plant (NPP) accid...rlier, well-publicized speculations that radiation exposure would claim tens of thousands of lives. But the 4,000 figure is not far different from estimates mad...

Anti-cancer Compound In Beer Gaining Interest

...s of cancer development and prevented by long-term exposure to non-toxic nutrients, food supplements or drugs that prevent the formation of cancers. With its broad spectrum activity, presence in food products, and ability to inhibit cancer at low concentrations, xanthohumol might be a good candidate for that ...

New vaccine platform may fight infections with causes from influenza to bioterrorism

...well, such as those caused by the flu, smallpox or exposure to anthrax, even in patients who have the highest risk for infection. Reporting in the Journal of Clinical Investigation, Jay K. Kolls, MD, division chief of Pediatric Pulmonology, Laboratory of Lung Immunology and Host Defense at Children's Hospita...

Student scientists create living bacterial photographs

...rature in an incubator. After about 12-15 hours of exposure (the time it takes for a bacterial population to grow and fill the Petri dish), the light projector is removed. What's left is a living photograph. Bacteria in the lighted regions of the Petri dish don't produce the pigment and appear light. Thos...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...ittle is known about the consequences of long term exposure to elevated atmospheric amounts. The presence of this gas is a significant driver of the production of low-level ozone, which, within the troposphere (the lowest part of the atmosphere, extending eight to 16 kilometres in height) is itself a harmful ...

Pillows - a hot bed of fungal spores

...tis in patients with allergic tendencies. Constant exposure to fungus in bed could be problematic. It can also get into the lung cavities created by tuberculosis which affects a third of the world's population, causing general ill-health and bleeding in the lung, as well as causing a range of plant and animal...

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