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Tag: "effects" at biology news

UTSA researchers examine effects of global warming on Antarctic

...le to find out if global warming is having similar effects in the frigid Antarctic region. UTSA Earth and Environmental Science Assistant Professor Hongjie Xie and doctoral student Burcu Cicek are analyzing data collected in December following a two-week trip to the region. The pair were part of an inte...

Massive coral death attributed to earthquake

...oastline, have documented, for the first time, the effects of earthquake uplift on coral reefs. The entire island of Simeulue, with a perimeter of approximately 300 km (186 miles), was raised up to 1.2 m (3.9 feet) following the 28 March 2005 earthquake, exposing most of the coral reefs which ringed the isla...

Scientists find hormone activity explains adolescent mood swings

...creased anxiety at puberty, due to the paradoxical effects of this hormone that is released by stress. Dr. Smith and colleagues identified the site on human recombinant alpha4-beta2-delta GABA-A receptors that produced the anxiety response, and were able to mutate the site to prevent the novel effect of ...

Common gene version optimizes thinking -- but with a possible downside

...aradox emerged from the first study to explore the effects of variation in the human gene for a brain master switch, DARPP-32. The researchers identified a common version of the gene and showed how it impacts the way two key brain regions exchange information, affecting a range of functions from general in...

A new study of living cells could revolutionize the way we test drugs

...ctrical activity test could be used to monitor the effects of pollution on naturally occurring micro-organisms in the environment. To detect a cell’s normal activity, Andre Geim and fellow researchers modified apparatus used originally to detect weak magnetic fields in superconductors*. Unfortunately, the...

Smell may outlast other senses

...ur sense of smell is vulnerable to both the direct effects of some medications and changes associated with a number of neurodegenerative illnesses. Exposure to these factors typically increases with age.? Anticholesterol and blood pressure lowering medications were amongst the common drugs known to interfe...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...tic pancreatic cancer cells are resistant to these effects of TGFb and these types of cancers are also less likely to invade surrounding tissues and to metastasize, or spread, to other organs. These properties likely contribute to the improved survival seen with this form of the cancer, Hingorani said. ...

Chemo combination improves survival in asbestos-related cancer

...toxicity, including drug-related death. Other side effects included blood cell abnormalities, nausea and diarrhea, which decreased in both incidence and severity after the vitamins were added to the treatment. People who work trades such as shipbuilding, railway engineering, construction work and asbestos ma...

Indicators for risk of heart disease are higher in passive smokers

...1 percent of those in active smokers, the apparent effects of passive smoking on the biomarkers were about one-third to one-half those for active smoking." The associations with fibrinogen and homocysteine observed in the study translate into an increase in a disease risk of five per cent, although the co...

Insomnia drug can improve brain function

...ate to her family, eat by herself, and move. These effects lasted for up to three hours. After systematically withdrawing all of her medications one by one, it was concluded that the positive effect was due to zolpidem. "This phenomenon was so reproducible that caregivers used to give her up to three tablets...

Turning green gunk to gold, anti-cancer gold

...e new cryptophycin analogs with low levels of side effects to be created for clinical trials. "This issue represented an exciting target that offered not only an interesting scientific problem, but the potential to do something of practical importance in creating a promising anti-cancer drug," he said. ...

Scientists find method to pick noncompetitive animals, improve production

...f the associations among animals that has profound effects on performance," Muir said. "It's called competition. Animals compete for food, space, territory and mates." In the first of the two papers, Muir and his colleagues explain the tool they developed to determine inherited traits that contribute to i...

Putting an old drug to a new use

...al Medicine at the University of Innsbruck. "These effects make nifedipine a promising candidate for a new drug to treat hereditary hemochromatosis and other iron overload disorders." Combining electrophysiology, cell biology and molecular investigations, Weiss and his collaborators found out that nifedip...

The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens

...least in some cases, counter the immunosuppressive effects of elevated testosterone in females." ...

Migration played key role in HIV spread in South Africa

...ations. "While there is convincing data on the effects of tobacco smoke on pulmonary clinical outcomes, the effect of marijuana smoke has been poorly understood," said Tetrault, ambulatory care fellow at Yale School of Medicine and the Department of Veterans Affairs Connecticut Healthcare System. Tetr...

Long-term marijuana smoking leads to respiratory complaints

...ations. "While there is convincing data on the effects of tobacco smoke on pulmonary clinical outcomes, the effect of marijuana smoke has been poorly understood," said Tetrault, ambulatory care fellow at Yale School of Medicine and the Department of Veterans Affairs Connecticut Healthcare System. Tetr...

Smoking ban dramatically reduces air pollution in Irish pubs

... irritant sensitivity. "Given the known health effects of secondhand smoke exposure and the reported reduction in mean exposure from 40.5 hours pre-ban to 0.42 hours post-ban, this is a disappointing finding, especially since the reported exposure outside the workplace also decreased by 42 percent," she ...

Massey researchers induce cell death in leukemia

...rom four of five patients, while exerting additive effects in cells from one patient. Notably, pronounced lethality was observed following treatment of cells with very low concentrations of the agents. Parallel studies conducted on two established CLL cell lines provided additional preclinical evidence t...

Canadian study shows bilingualism has protective effect in delaying onset of dementia by four years

... a number of other recent findings about lifestyle effects on dementia. The team is working on a follow-up study that will further examine bilingualism and dementia onset. They plan to conduct interviews and cognitive assessments on bilingual and monolingual patients in Baycrest's Memory Clinic and follow...

UCSF brain tumor vaccine trial shows promising results

... tissue unaffected and limit the debilitating side effects typically associated with traditional cancer treat...s no tumor,?Canagelo said. “I haven’t had any side effects from the treatment, and I’m getting stronger every day. I would urge patients to seek out second opi...

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