Tag: "exposure" at biology news

Alzheimer's disease linked to inflammation

...study of dementia in identical twins suggests that exposure toinflammation early in life quadruples one's risk of developingAlzheimer's disease. Margaret Gatz, lead author and professor of psychology in the USCCollege of Letters, Arts and Sciences, is slated to present herfindings at the first Alzheimer's Ass...

Anthrax inhibitors identified by Burnham team

...could be developed into an emergency treatment for exposure to inhalation anthrax. These findings will be published by the Proceedings of the National Academy of Sciences by Early Edition at the journal's website the week of June 20th. Bacillus anthracis ("anthrax") is a proven agent of biological terrorism...

Manatee eyes could be window to health status

... the next 10 to 20 years, researchers fear chronic exposure to cooler waters could weaken the large herbivores' immune system, and they could sicken or even die. By sampling manatees' tear film in addition to performing other standard tests, scientists think they might be able to more efficiently evaluate man...

Environmental chemical cocktail may sabotage sperm

...ey would be preparing to fertilise eggs. "Maternal exposure to the compounds is probably more important than p...biotics at any one time, with soya in the diet and exposure to other compounds coming from plastics etc, we need to investigate their possible effects on the fe...

Purdue scientists may have found key to halting spinal cord damage

...n does in tissue that experiences stresses such as exposure to smoke or pesticides. That list of stresses now includes physical damage, and in the case of spinal injury, acrolein's hazard may be the key in causing debilitating paralysis that sets in after the initial trauma. "When a spinal cord ruptures, not ...

New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids

...how that infection with some bacteria or even just exposure to pieces of the outer wall of the bacteria results in an increase in "self" GSL synthesis by cells that promote the immune response and subsequent stimulation of autoreactive GSL-specific T cells. "Collectively, these findings suggest that recognit...

Salmon survival, cleaner hydropower focus of ORNL research

...tart behavior is filmed in the first minutes after exposure using a high-speed camera. "This test allows us to evaluate whether a turbine-passed fish's predator avoidance behavior is compromised compared to the behavior of unstressed control fish," Cada said. "In addition, we are testing the hypothesis that t...

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 ...

Agricultural antibiotic use contributes to 'super-bugs' in humans

...t to measure, as it is "the product of a very high exposure rate to potentially contaminated food, and a very low probability of transmission at a given meal." Nevertheless, based on the analysis presented in PLoS Medicine , the authors suggest that "transmission from agriculture can have a greater impact o...

Researchers discover gene that determines asthma susceptibility by regulating inflammation

...le of Nrf2 in lung inflammatory diseases caused by exposure to allergens. They found that the absence of the Nrf2 gene increased migration of inflammatory cells into the airways and caused an enhanced asthmatic response in mice. "Nrf2 is critical for proper response to allergens in lungs and maintenance of a ...

Study to determine if air pollution accelerates development of cardiovascular disease

...searchers will be measuring the effect of repeated exposure over a 10-year period to six major air pollutants:...ar "events," trying to determine whether long-term exposure to air pollution accelerated development of atherosclerosis, progressively increasing the likelihood...

Identical twins may have more differences than meet the eye

...le in these changes." Scientists think that foods, exposure to chemicals, physical activity levels and aging may all contribute to methylation in cells. But they don't understand how changes in DNA methylation occur, or how the process is regulated. The DNA analysis in this study showed that twins who had spe...

Researchers discover how tumor suppressor gene works

...the process. The enzymes are normally activated by exposure to ultraviolet light. By shutting down the enzymes, p16 keeps them from activating a huge complex of proteins, which, when active, attaches to chromosomes and turns on many genes that promote cell growth. The p16 gene works by producing a protein th...

The very defensive caterpillar

... by non-pathogenic bacteria (E. coli), followed by exposure to a second, but lethal insect pathogen (Photorhabdus). Investigation of their blood then showed that antibacterial peptides were being produced by the so-called 'fat-body', an organ specialised in protein production. These proteins appear to be able...

Naturally occurring asbestos linked to lung cancer

(SACRAMENTO, Calif.) - Everyday exposure to naturally occurring asbestos increases the risk...estos. "Our findings indicate that the risks from exposure to naturally occurring asbestos, while low, are real and should be taken seriously," said Marc Schen...

Boosting vitamin C in plants can help reduce smog damage

...gy to protect plants from the effects of long-term exposure to smog," Gallie said. Plants, he said, have two o...n and suburban landscaping are heavily affected by exposure to smog," said Gallie. The next step in Gallie's research will focus on the apparent correlation bet...

New study on OTC progesterone health risks in women published

...f OTC topical progesterone results in similar drug exposure through skin absorption as that which results from...tween the two groups in the amount of progesterone exposure in the body. The women involved in this study also experienced similar rates of adverse effects whil...

Recent developments on the genetics of alcohol use

... According to these findings, it is this extended exposure to acetaldehyde that is thought to be responsible for organ damage resulting from chronic alcohol use." - Several chromosomal regions particularly an area of chromosome two were linked to suicidal behavior, conduct disorder symptoms, and alcohol...

Acetaldehyde may be the culprit behind hangovers

...s, recently identified as a marker of acetaldehyde exposure in persons with inactive ALDH2. Results indicate t... both of which are indicators of high acetaldehyde exposure due to drinking in persons with inactive ALDH2." In other words, individuals with inactive ALDH2 do ...

Tips from the journals of the American Society for Microbiology

... coli and caged with intact apples. After limited exposure researchers found the apples to be contaminated wi...erious illness only developing in conjunction with exposure to other viral or bacterial pathogens. However, emergence of a new viral strain or cross-species tr...

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Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2New telemetry implants expected to change how large animal toxicology studies are conducted 2
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