Tag: "female" at biology news
US researchers show cottonseed drug is cancer treatment booster
...reating cancer. Tamoxifen was first developed as a female
contraceptive and failed, only to become the world's most successful breast cancer drug. Will gossypol follow in the footsteps of tamoxifen? "There is a lot of research still to do, but we certainly hope so," said Dr. Xu. "The natural form of gossypo...
New genetic tools provide clues to the effects of exercise and diet on obesity, diabetes
...training (96 hours to two weeks) in 10 male and 10 female
STRRIDE subjects. "We propose that training coordinately increases the levels of aspartate aminotransferase 1, lactate dehydrogenase B and pyruvate dehydrogenase alpha 1 subunit, increasing glucose metabolism in muscle by liberating pyruvate ...
Estrogen protects male rats from aortic aneurysms
...-9 gene expression compared to the same cells from female
rat aortas. Known to be involved in AAA formation,...um treated male rats with estradiol, a form of the female
hormone estrogen, and then tested their aortas, he found that MMP-9 activity was substantially decre...
Study in Royal Society journals presents evidence for inherited factors in homosexuality
...factors favouring male homosexuality and promoting female
fecundity by Dr F Corna, Dr A Camperio-Ciani and D...ause male homosexuality, associated with increased female
fecundity was found only in maternal line and not in paternal line of homosexuals. Contact: Dr Franc...
Experimental drug prevents vaginal simian HIV transmission in monkeys Science study says
...to prevent vaginal acquisition of SHIV in 30 adult female
rhesus macaques, Macacca mulatto, ranging from 5 to 12 years of age. Each monkey was treated with progesterone, a hormone that thins the mucosal wall and facilitates SHIV infection. Next, the researchers split the monkeys into six groups of five, ane...
Study identifies target for preventing sexual transmission of HIV
...ave shown that it may be possible to block male to female
HIV transmission in heterosexual intercourse and have identified the target for blocking that transmission, according to an article from the Oct. 14 issue of Science , presented today at the American Medical Association 23rd Annual Science Reporters...
High fiber intake reduces estrogen levels in Latina women, according to researchers
...ke increases, levels of estrone and estradiol, two female
hormones measured in blood, drop sharply. In addition, the researchers say, they found that as dietary fat intake increased in the women studied, so did the hormone levels. "However, when dietary fiber and fat are both included in the statistical mod...
Academics find that the finger of destiny points their way
... survey of the finger lengths of over 100 male and female
academics at the University by senior Psychology l...actual achievement levels. In a survey of male and female
students on a JAVA programming course at the University, the researchers found a link between finger...
Single genetic defect links many risk factors for heart disease and stroke
..." The woman told researchers that a number of her female
relatives had the same problem. Further study of the family revealed a high frequency of high blood pressure and cholesterol. "That's when the real saga began," said Lifton. "The family was extraordinarily cooperative, and we eventually studied 142 ...
Brain differences in adolescents, psychopaths, lend to their impulsive, risk-taking behavior
...lus maze to study exploratory behavior of male and female
rats before, during, and after puberty. The maze c... The researchers found that both male and female
pubescent rats were more likely to enter and spent more time in the open and exposed areas than did ...
Early life stress harms mental function and immune system in later years
...ies; controls in this group were left alone. Adult female
offspring were then given an intravenous injection of lipopolysaccharide, an immune challenger known to bring about stress and immune responses. The adult offspring were sacrificed at either zero, one, or two hours after lipopolysaccharide injection,...
OHSU scientists identify key gene that delays female puberty
...a gene called TTF-1 causes a delay in the onset of female
puberty," explained Ojeda. "This work is of particular interest to those investigating both the delay and early onset of puberty in young women. While there is no definitive information, recently a number of research papers have been published sugges...
Bug's-eye-view of urinary tract reveals E.coli infection genes
...econd was a container of pooled urine from healthy female
human volunteers. The third was inside the urinary tracts of 40 female
mice whose bladders were inoculated with CFT073 E. coli. According to Mobley, mice are often used i...
Yerkes researchers to present array of new data at Society for Neuroscience Meeting
... determined changes in gene activity of monogamous female
prairie voles in the nucleus accumbens (NA), the areas of the brain associated with reward and feelings of pleasure, may explain the cellular processes responsible for social bond formation. (2 pm 3 pm) observed, for the first time, vasopressin i...
Plentiful fossils of dinosaur contemporary allow population study
...n that about 40 percent of them have. One might be female
and one male, Casey said. "We found no significant differences in shape or size between the two forms, suggesting that they definitely belong to the same species." In addition to the morphometric studies, the team is doing taphonomic analyses, trying...
Growth factors confer immortality to sperm-generating stem cells
...e and similar to embryonic stem cells. Whereas the female
germ cell, the egg, stops dividing before birth, the spermatogonial stem cells continue to divide throughout life. According to Brinster, it is possible to modify the male germ line between generations by manipulating the spermatogonial stem cells i...
Sexual competition drives evolution of a sex-related gene
...major mating systems, including those in which one female
copulates with one male in a fertile period (such ...l somewhere in between (such as orangutans where a female
will copulate with the dominant male, but may also copulate with other males opportunistically). "W...
Study links polycystic ovary syndrome with early vascular changes of heart disease
...ommon disorder that affects up to 7 percent of the female
population, or about 10 million women in the United States. Some estimates are that as many as 10 percent of reproductive-age women are affected by PCOS. Previously treated on a symptom-by-symptom basis by physicians unaware that a larger and more co...
Sex-determining genes of infectious fungus resemble human Y chromosome
...enes that encode male traits from infiltrating the female
X chromosome, Heitman noted. The researchers suggest that, despite the lack of recombination, some fungal mating type gene repair might occur through the exchange of gene segments within chromosomes. Certain sex-determination genes occur in ...
JCI table of contents, November 15 2004
...lated skin cells from severely affected areas of a female
patient and found that skin cells from patterned skins lesions possessed a defect in the gene ATP2C1, which encodes a calcium pump protein, present on the chromosome derived from the patients mother. Normally, the chromosome obtained from the father ...
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