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Tag: "exposed" at biology news

Bee mites suppress bee immunity, open door for viruses and bacteria

...ncreased to extremely high levels when the bee was exposed to the bacteria. The virus levels in mite-free bees did not change when the bee was injected with bacteria. One chemical, GOX or glucose oxidase, is put into the honey by worker bees and sterilizes the honey and all their food. If bees have mites, t...

Alcohol consumption disrupts breastfeeding hormones

...s drinking to breastfeed so that her infant is not exposed to the alcohol in her milk. However, she needs to be aware that the hormones underlying lactation and her milk production will be affected in the short term." ### ABOUT MONELL: The Monell Chemical Senses Center is a nonprofit basic research institu...

Mutation in clams protects against paralytic shellfish poisoning but raises human health risk

...species. In laboratory studies, the investigators exposed clams to PSP toxins and monitored the shellfish fo...lations also function differently, with those from exposed the population showing markedly less sensitivity to the toxins. Tracking these differences down to ...

DOE JGI launches IMG public online microbial genome data clearinghouse

...find upregulated in Caulobacter crescentus strains exposed to heavy metals. Examining the neighborhood around a gene of unknown function in multiple species selected from the organism browser may yield clues of what its role might be in your particular species," said Andersen. "The interface is quite intuiti...

Engineers improve plastic's potential for use in implants by linking it to biological material

...ace. The bacteriophages that didn't wash away when exposed to conditions that hinder attachment were retested on a new polypyrrole-coated container, a process that was repeated four more times. The sticky peptide selected, known as T59, is a string of 12 amino acids. To make certain that something else on t...

Ebola virus: from wildlife to dogs

...mals. Ebola virus antibodies were detected in dogs exposed to the virus during the latest epidemics, which suggests that these animals may well have been infected and can therefore be a new source of transmission to humans. Ebola virus infection in humans provokes a violent haemorrhagic fever. It usually fla...

Researchers Closer To Helping Hearing-Impaired Using Stem Cells

...e and other characteristics of neurons. Next, they exposed the cells to two molecules that are secreted from nearby tissues of the ear during embryonic development. The two molecules -- known as Sonic hedgehog and retinoic acid -- together caused the marrow stromal cells to further develop into cells with ma...

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

...aborate to survive in a harsh environment, such as exposed rock. One partner, a cyanobacterium or a photosynthetic alga, or both, are able to form food from carbon dioxide, while the other partner, a fungus, provides moisture, nutrients, and protection for the consortium. "When and where did they first lear...

Research may provide new link between soft drinks and weight gain

... surprised to see that mice actually ate less when exposed to fructose-sweetened beverages, and therefore didn't consume more overall calories," said Dr. Tschöp. "Nevertheless, they gained significantly more body fat within a few weeks." Results from an earlier study in humans led by Peter Havel, DVM, PhD, ...

Survey reveals women and doctors aren't talking about HPV

...protect those inoculated if they have not yet been exposed to the virus. However, screening will still be necessary, since the vaccines now being researched only target some of the several types of HPV that may trigger cervical cancer. About the Association of Reproductive Health Professionals The Associati...

UCLA cancer researchers shake loose hidden biomarker

...rker, transforming it from a hidden target into an exposed one. "In prostate cancer cells, PSMA is expressed in the apical region of the cell membrane, which blood can't reach, so injection of immunotherapy into the bloodstream is not effective," said Rajasekaran, also an associate professor of pathology an...

Does vitamin C help prevent or treat the common cold? Maybe not, after all.

...hat the vitamin could help prevent colds in people exposed to extreme physical exertion or cold weather. They...was given to marathon runners, skiers and soldiers exposed to significant cold and/or physical stress. Those taking the vitamin experienced, on average, a 50% ...

Cancer drug slows poxvirus in mice

...t in emergency situations where they may have been exposed to smallpox virus. "This study helps illuminate t... given to humans being treated for CML. Next, they exposed the mice to ordinarily lethal amounts of vaccinia. All of the Gleevec-treated mice survived, while 7...

Discovery could be key to bioterrorism defense

...aid. "The genes were put into cells that were then exposed to a live virus at AAHL." Hendra virus was first isolated in 1994 when an outbreak of respiratory and neurologic disease emerged among horses and humans in Hendra, Australia, killing two people. Hendra recently reemerged in Queensland, Australia, an...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

...o two pieces. When that happens, those cells, when exposed to fluorescent light, glow blue instead of green. This technique enabled the team to identify the cell types targeted by the bacteria. Two days after the mice were infected, their spleens were filled with bacteria. Although the overwhelming majority...

Any exposure to tobacco smoke during pregnancy is risky

... are likely to have lifelong repercussions for the exposed fetus, affecting survival, birth weight and susceptibility to disease, including cancer." This is a startlingly different conclusion than that reached by three previous studies looking at the potential effects of tobacco smoke exposure to babies in ...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...n the correct structure of other proteins that are exposed to the unusually harsh acidic environment," added Michael Thelen, a protein biochemist at Lawrence Livermore National Laboratory. Last year's paper reporting the community genome showed that a minor organism in the community, a Leptospirillum group ...

One hit of crystal meth causes birth defects

...l be to study women and their babies who have been exposed to drugs like methamphetamine that enhance free radical formation to see if the human damage is consistent with his mouse findings. He will also try to determine whether the methamphetamine causes other lasting damage in mice, such as impacts on lear...

Achilles heel of the herpes virus possibly found

...s in the cell membrane with one end of the protein exposed outside of the cell ready to link up with viruses -- or to serve the receptor's "real" function, which still remains to be discovered. They also showed that HSV does not enter into pig cells that have an altered human B5 protein that is changed by mu...

Environmental chemical cocktail may sabotage sperm

... for two reasons. Firstly, humans are likely to be exposed to more than one such compound at any given time a... exposure. Given the likelihood that all of us are exposed to several xenobiotics at any one time, with soya in the diet and exposure to other compounds coming...

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