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Tag: "signs" at biology news

Earliest European Farmers Left Little Genetic Mark On Modern Europe

... prevalence declines evident among pregnant women, signs of increased condom use among sex workers and expansion of voluntary HIV testing and counselling. Despite decreases in the rate of infection in certain countries, the overall number of people living with HIV has continued to increase in all regions ...

2005 AIDS figures released by WHO and UNAIDS

... prevalence declines evident among pregnant women, signs of increased condom use among sex workers and expansion of voluntary HIV testing and counselling. Despite decreases in the rate of infection in certain countries, the overall number of people living with HIV has continued to increase in all regions ...

Getting an evolutionary handle on life after reproduction

... Postreproductive lifespan, in contrast, showed no signs of being under selection, and appeared to be what the authors called a "random add-on at the end of the life history." Random or not, this is the first demonstration of a postreproductive lifespan in fish. These findings also refute the suggestion t...

A little telomerase isn't enough

...nd died at age 65. Her affected children developed signs of the disease about 10 years earlier than she had...gerously short telomeres. In an affected grandson, signs of the disease appeared 40 years earlier than in his grandmother and 20 years earlier than in his fa...

Building a better mouse model of lung cancer: FHIT counts

...treatments that could be offered at the very first signs of lung cancer, when the possibility of a cure is most likely. Creating the new mouse was basically a matter of FHIT ?the gene that forms the cornerstone of the new model ?according to Kay Huebner, a professor of molecular virology, immunology and m...

Once-dreaded leprosy 'replaced' by tuberculosis, say researchers

...usion drawn by the researchers from these multiple signs of co-infection of leprosy and TB bacteria is that those with leprosy, which was seldom fatal, were weakened to the extent that they became highly vulnerable to the "big killer," tuberculosis. This was exacerbated by the lives of deprivation that the...

Grabbing addiction by the tail

...uld, whether the addicted rats would exhibit fewer signs of behavioral sensitization. Wang's research has made significant progress toward answering these questions. The researchers began by building a peptide ?a long molecule made from a string of amino acids ?with a structure similar to the tail of the ...

Living anti-HIV gel shows early promise

...or periods of weeks to months, without causing any signs of disease. Furthermore, the modified bacteria produced large quantities of the HIV-blocking protein. The reproductive and intestinal tracts are prime sites for HIV infection. Various microbes live in each, playing an important role in defending the...

Chernobyl: The true scale of the accident

...iety over 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 ...

Customized gene chip provides rapid detection of genetic changes in children's cancer

...rray focuses on suspect regions of chromosomes for signs of deleted genetic material known to play a role in the cancer. The investigators, from The Children's Hospital of Philadelphia and Thomas Jefferson University, say their technique may be readily adapted for other types of cancer. The proof-of-princ...

Gene therapy works in mice to prevent blindness that strikes boys

...ing, researchers said. Especially encouraging were signs the treatment may be able to repair retinal damage. The treatment has promising implications for other genetic eye diseases that involve the eye's ability to process light, including retinitis pigmentosa, which affects about 200,000 people in the Un...

Researchers use brain scans to predict behavior

...t some of the brain signals they detected might be signs of the brain's struggle to cope with an ambiguity built into the test: the volunteers knew the hint was only accurate 80 percent of the time. "Whether the hint is accurate or not was determined by the computer's random number generator, and the vol...

Emerald Spectre haunts Ontario's ash forests

...ted with the borer are under quarantine. Prominent signs along highways advise the public of the total ban on the transport out of the area of ash trees, saplings and firewood. During the winter of 2003-2004, the CFIA took the dramatic step of creating a borer "firewall" in Ontario's Essex County. That inv...

Number Of Babies Born Prematurely Nears Historic Half Million Mark In U.S.

... birth in 2003. The campaign educates women on the signs and symptoms of premature birth, and supports more research into the causes of premature labor. One of the goals of the campaign is to help the nation reach the goal set by the U.S. Public Health Service of reducing the rate of premature birth to 7.6...

Tiny roundworm's telomeres help scientists to tease apart different types of aging

...ut a single dividing cell in its body, still shows signs of old age and eventually dies, raising intriguing questions. Are telomeres in non-dividing cells eroding slowly over time? If so, will worms with longer telomeres live longer? If not, how do worm cells and by extension non-dividing human cells, suc...

Researchers develop new testing methods for potential monkeypox or smallpox outbreak

...s smallpox vaccinations failed to show any outward signs of viral infection and had no noticeable disease symptoms. The researchers found this particularly interesting because this virulent strain of monkeypox virus resulted in numerous hospitalizations. In one case that has been previously reported, a chi...

Infectious disease expert warns of spread of Rocky Mountain spotted fever

... rash that appears five to 10 days after the first signs of infection, has been largely confined to the Sou...areness among physicians about the disease's early signs and symptoms may be the best means of curbing the potentially deadly impact of the disease, which ca...

Forsyth scientists find three bacteria associated with oral cancer

...ned by a dental or medical health professional for signs of oral cancer at least once a year." Although oral cancer is primarily a disease of adults over the age of 40, younger adults are also at risk--especially if they chew spit tobacco or smoke and also consume alcohol. Individuals with no known risk fa...

Variant prion protein causes infection but no symptoms

...n, all 70 mice in the control group showed visible signs of infection: twitching, emaciation and poor coord...ll membrane anchor--for 500 to 600 days and saw no signs of scrapie disease. Subsequent electron microscopic examinations at UCSD, however, confirmed that th...

Tadpole soon to help in the fight against cancer and lymphedema

...essel system, because of which the tadpoles showed signs of lymphedema. It did not have any effect on the blood vessel system. With these results the VIB researchers are the first to prove that tadpoles are perfect model organisms for the study of lymphatic vessels. In the future tadpoles can be used to i...

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