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Tag: "male" at biology news

Anti-herpes treatment reduces HIV levels in women infected with both viruses

...aginal microbicides, pre-exposure HIV prophylaxis, male circumcision, and - in the future - an HIV vaccine.' 'The results of the trial are striking', he adds. 'They show that valacyclovir significantly reduces the frequency and quantity of HIV detectable in genital secretions and, in addition, reduces ...

Quitting smoking reduces risk of lung cancer mortality by 70 percent

...y times higher among women who smoke compared with male smokers, a worrying finding given the increasing trend for women to take up the habit in many countries. The research paper's author, Dr Rachel Huxley, Director of Nutrition and Lifestyle at The George Institute for International Health (part of t...

Gene hunters close in on Lou Gehrig’s disease

...nd his team scanned the entire genome of 276 adult male and female subjects with sporadic ALS and 271 adult male and female subjects with no history of neurological disease. Researchers used a new technology kn...

Severe mental retardation gene mutation identified

...he condition runs in families and only affects the male offspring. So far only a few of these genes have been identified. Working through a large, international collaboration, the researchers collected genetic samples from 250 families in which at least two boys have mental retardation to help ident...

Active ingredient in common Chinese herb shown to reduce hypertension

...ey-1-clip protocol to induce renal hypertension in male golden Syrian hamsters. The animals were anesthetized and a retroperitoneal approach was used to place a silver clip to constrict the right renal artery. Sham-operated hamsters and mice underwent the same procedure, except for the placement of a clip...

Cancer researchers add spice to research against rare neuromuscular disease

...is central to the action of testosterone and other male hormones. Chang's laboratory, in collaboration with San Diego-based AndroScience Corp., has screened hundreds of compounds for their activity involving the androgen receptor, which is also involved in prostate cancer, acne, and enlarged prostate, as ...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...cancer? Risk factors for gastric cancer include male gender, genetic susceptibility, chronic gastritis and infection by the bacteria Helicobacter pylori . Although genetic susceptibility is a possible cause, it's not likely, Dr. Genta said. That's because the autopsy of Napoleon's father described ...

Amur leopard still on the brink of extinction, scientists say

...eterinary research." The census 2007 found 7-9 male leopards, 3-7 females without cubs, 4 females with cubs, 5-6 cubs in all, and 6-8 undefined tracks. Total: 25-34. This compares with 9 males in 2003, 7 females without cubs, 4-5 females with cubs, 4-5 cubs in all, and four undefined. Total: 28-30....

New research says winning a Nobel Prize adds nearly 2 years to your lifespan

... are kept secret for 50 years). This gave them 528 male scientists with known biographical details (birth and death dates). They looked at one sex only to avoid differences in life span between sexes. They dropped four from that total who died prematurely for non biological reasons - such as active combat...

Smoking ban dramatically reduces air pollution in Irish pubs

...acco smoke exposure in 42 Dublin pubs and among 73 male bar staff members who received pre- and post-ban lung function tests. Participants were tested prior to the March 29, 2004 national smoking ban, and again one-year later. Among the barworkers, the self-reported workplace exposure to environmental ...

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

...ne levels in males over many generations. Because male and female testosterone levels are correlated, fem...t off diseases. Therefore, a female's choice of a male with exaggerated ornaments may make her daughters and granddaughters less able to resist pathogens, ...

Vasectomy may put men at risk for type of dementia

...e link between the surgery and PPA when one of her male patients connected the onset of his language probl...tients Weintraub sees from around the country, the male patient rushed into the room and asked the men sitting there, "OK, guys, how many of you have PPA?" ...

Early-stage sperm cells created from human bone marrow

..., Prof Nayernia and his team took bone marrow from male volunteers and isolated the mesenchymal stem cells...ls in the laboratory and coaxed them into becoming male reproductive cells, which are scientifically known as ‘germ cells? Genetic markers showed the pre...

Gene elevating breast cancer risk also causes prostate cancer

...evelopment. The study also involved 141 unselected male breast cancer patients, 188 familial and 288 unselected colorectal cancers, as well as 164 familial and 475 unselected prostate cancer patients. In prostate cancer, one multigenerational cancer family was found where cancer occurred in several genera...

Researchers find gene mutation that causes infertility in male mice

...identification of a mutation in a gene that causes male infertility in mice. Because this is the first time that a dominant mutation that leads specifically to infertility in a mammal has been discovered, the researchers say they can now look for similar mutations in the DNA of infertile men. "If you con...

Newborn brains grow vision and movement regions first

...rms of brain volume, the researchers found newborn male brains were 7.8 percent larger than females. In addition, males had 10.2 percent more gray matter and 6.4 percent more white matter than females. No significant difference in brain asymmetry was observed between males and females; the left side of th...

Africa's first large-scale HIV vaccine study launches

...gular basis throughout the study, and high-quality male and female condoms will be provided to participant...s to medical circumcision also will be provided to male participants who choose to undergo the procedure. ...

Remote sheep population resists genetic drift

...ion, bred over dozens of generations from a single male and female pair transplanted to Haute Island from ...amount of possible gene combinations that a mating male and female couple can produce. Scientists believe greater genetic diversity corresponds with greater...

Drug-resistant bacterial infections serious complication after corrective eye surgery

...the next decade. The authors cite the case of a male nurse who underwent an "uneventful" bilateral LASIK procedure that resulted in 20/20 (right eye) and 20/70 (left eye) visual acuity. Within 2 weeks, he had developed an infection in his left eye that grew worse, despite treatment, until his vision wa...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

...roup of European scientists have determined that a male reindeer's air sac, influencing vocal sound and ne...e, growth of the air sac seems to be comparable in male and female reindeer until they reach the age of two–three years, at which point the female's air sac...

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