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Tag: "diminishing" at biology news

Fat fish put obesity on the hook

...we are a step closer to temporarily turning off or diminishing the fat-storing mechanisms that were once crucial to the survival of our species. The zebrafish has become a model animal for the study of many diseases because it has a backbone and because its genetics have been well described. This is one more exa...

Recently discovered species gain protection

...ened frog species, whose last remaining habitat is diminishing rapidly within the Central Cordillera. Seven Vulnerable and four Endangered frog species occur within the new reserve, as do five additional species so new to science that they are still awaiting formal descriptions. At least one of these species is ...

UCSF study will test new vaginal microbicide for herpes and HIV

...erpes are at increased risk of contracting HIV, so diminishing the risk of getting herpes also diminishes the risk of HIV infection. The generic name of the gel is "3 % w/w SPL7013" (brand name VivaGel). Following this safety trial, other trials will be conducted to determine its effectiveness at fighting off...

Math model predicts cancer behavior

...ve tumor cells. "In the immediate term we may be diminishing tumor burden, but the long term effect is to have a much nastier tumor than there was to begin with," Quaranta said. There is anecdotal evidence, he added, to support the idea that changes to the microenvironment result in a tumor with more or less i...

Regulating the nuclear architecture of the cell

...matin structures best known for limiting, by their diminishing length, how many times a cell can replicate. Heterochromatin also flanks the centromere in the central region of the chromosome, the chromatin structure that plays a crucial role in chromosome segregation during cell division. What other functions ab...

New engineered drug may offer prolonged arthritis relief

... known to block IL-1 activity, might have value in diminishing the severity of osteoarthritis, said Mohammed Shamji, a neurosurgery resident pursuing his Ph.D. in Setton's laboratory. However, trials of IL1RA for osteoarthritis have had limited success, primarily because the drug tends to break down quickly, a...

New HIV statistics indicate increasing toll of AIDS on African American community

...isease more often than other racial/ethnic groups, diminishing medications' effectiveness. Many African-Americans also distrust the medical establishment, which only adds to the problem. Establishing and expanding corps of community health workers is a proven, effective and critical bridge between physicians a...

AIDS study challenges conventional treatment guidelines for HIV patients

...iral therapy. Current treatment guidelines, while diminishing its importance, continue to include HIV viral load as one element in making decisions regarding when to begin antiretroviral therapy. Antiretroviral therapy, also known as HAART, is credited with saving millions of lives. However, potent side effec...

Therapeutic prospects beyond Vioxx

...he benefit of drugs like Vioxx and Celebrex, while diminishing the risk of heart attack and stroke by having precisely the opposite effect on prostacyclin," says FitzGerald. ...

Hooked on fishing, and we're heading for the bottom, says scientist

...fish" and fishermen's nets will be hauling in ever diminishing loads unless there's political action to stem the global tide of over fishing, says a fisheries expert based at the University of British Columbia. Dr. Daniel Pauly says the crisis in the world's fisheries is less about scientific proof than about at...

Ocean 'dead zones' trigger sex changes in fish, posing extinction threat

...y and quality of the eggs produced by female fish, diminishing their fertility, he adds. In their experiments, Wu and his colleagues found low levels of dissolved oxygen ?less than 2 parts per million ?down-regulated the activity of certain genes that control the production of sex hormones and sexual different...

Chernobyl: The true scale of the accident

... the health effects of radiation shows no signs of diminishing and may even be spreading. Life expectancy has been declining across the former Soviet Union, due to cardiovascular disease, injuries and poisoning, and not radiation-related illness. How have governments responded? The resettlement and rehabilitat...

Restaurant seafood prices since 1850s help plot marine harvests through history

... ago; * How archaeologists are documenting the diminishing size of North Sea fish between the years 1000 and 1500, a sure sign of over-fishing, but that such pressure on stocks was temporary. Even the most exploited species like cod and herring demonstrated ability to recover over time, with lessons for the ...

Expanding forests darken the outlook for butterflies, study shows

...adows--largely the result of human activities--are diminishing the alpine butterfly gene pool, creating a pattern that could lead to the butterflies being less able to survive, said Dr. Jens Roland, a biological scientist at the University of Alberta and an author of a paper on the subject that has been publishe...

U-M scientists find genes that control growth of common skin cancer

...t Hh pathway inhibition in BCCs, while effectively diminishing tumorsize, may not be curative due to the survival of this residual tumorcell population.“Our work demonstrates that BCC growth in this model remains strictlydependent on the Hh pathway,?says Mark Hutchin, M.D., a U-M residentin dermatology and lead ...

Scientists collaborate to assess health of global environment

...t or wood fuel harvesting in Zambia. Overall, the diminishing capacity of services to meet human demands reflects a global problem, Mooney said. Fifteen of the 24 services the assessment considered have been degraded over the last 50 years--most notably fresh water, fisheries, air and water purification, and th...

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