Tag: "sex" at biology news
Wide variety of physical activities may protect teens against risky behavior: Study
...eased risk for drinking, drugs, violence, smoking, sex
and delinquency, compared to teens who watch a lot...aviors such as drinking, drugs, violence, smoking, sex
and delinquency," Gordon-Larsen added. The study is published in the April issue of the journal Pedi...
Racial disparities in cancer not as simple as black and white
...g for potential confounding variables such as age, sex
and stage of disease at diagnosis, Elhefni found that blacks were 20 percent less likely to have chemotherapy recommended than whites. The compliance rate for blacks and whites prescribed chemotherapy was the same. Both African-Americans and whites ...
Intrahepatic cholestasis during pregnancy associated with later liver disease
...to metabolize the high amounts of placenta-derived sex
steroids during pregnancy. Because no previous longitudinal studies have assessed subsequent risk of liver and biliary diseases in ICP patients, researchers led by Anne Ropponen, M.D. of the Department of Obstetrics and Gynecology at Helsinki Univer...
Truly informed consent must include talking about future fertility, warn experts
Talking about sex
and fertility can be just as embarrassing for medical staff as for adolescent cancer patients, the 4th International Conference on Teenage and Young Adult Cancer Medicine heard today (Thursday 30 March). However, Drs Allan Pacey and Adam Glaser warne...
Ocean 'dead zones' trigger sex changes in fish, posing extinction threat
...issolved oxygen, also known as hypoxia, can induce sex
changes in embryonic fish, leading to an overabund...ty of certain genes that control the production of sex
hormones and sexual differentiation in embryonic zebra fish. As a result, 75 percent of the fish dev...
FDA approves extended dosing of Aranesp
...entrate, headache, inability to stay warm, loss of sex
drive, and pale skin. Frequent visits to the clinic for anemia treatment can result in significant time spent by patients, caregivers and healthcare providers. Reducing the number of visits required for anemia treatment with less frequent dosing an...
Growth hormone is made in the brain, report scientists
...earn differently than females. It is possible that sex
differences in these hormones are somehow involved."...
Lefties have the advantage in adversarial situations
...on pressure as mate selection. It is not all about sex
all of the time."...
X chromosomes key to sex differences in health
...ence in the incidence of other conditions and even sex
differences in behavior, according to a special co...susceptible to infections, such as meningitis. The sex
chromosomes, known as X and Y, determine the sex
of a child and may also offer additional explanatio...
How flowers changed the world a new book by Field Museum scientist
...ry of the Earth. There's a lot of discussion about sex
since flowers are the reproductive organs of flowering plants. "It is truly botany made interesting and accessible," says David Lentz, vice president of the Chicago Botanic Garden. "Anyone who ever thought they would like to learn more about flower...
Pepper component hot enough to trigger suicide in prostate cancer cells
...is dependent on testosterone, the predominant male sex
steroid, capsaicin reduced cell proliferation in a dose-dependent manner. Increased concentrations of capsaicin caused more prostate cancer cells to freeze in a non-proliferative state, called G0/G1. Prostate cancer cells that are androgen independe...
Australian geneticist receives top award
...h focuses on the evolutionary history of the human sex
chromosomes, X and Y. Her team discovered that the gene on the Y chromosome thought to be responsible for testis development was not located on the Y chromosome in marsupials, which led to two of her former students identifying the correct sex-determ...
Sex chromosome genes influence aggression andmaternal behavior, say UVa researchers
...ty of Virginia Health System. "The differences in sex
chromosomes, XX versus XY, are also responsible fo...ining gene Sry on the male Y chromosome from other sex
chromosome genes. The presence of Sry leads to the development of the testes and high levels of andr...
Active inbreeding avoidance in wild capuchin monkeys
...living mammals, almost all members of at least one sex
leave their birth group at adolescence, hindering inbreeding by separating opposite-sexed adult kin. In species in which the same male breeds in a group for a sufficiently long period that he risks mating with his daughters, females are typically the...
Sex: Why bother? Evolutionary mysteries probed at UH
What advantage did sex
offer when it first appeared and why does sex
persist in modern organisms, stopping them from becoming asexual again? One University of Houston p...
High-status monkeys ignore the interests of riff-raff
...social status, such as elevated levels of the male sex
hormone testosterone, may suppress so-called "social vigilance," which is high in low-status males that readily follow the gaze of others....
News tips from the Journal of Neuroscience
...r without Sry , and with or without the non- Sry sex
chromosome genes. In tests of latency to aggression and in parenting behavior (pup retrieval) the sex
chromosome complement, as well as gonadal steroids, influenced behavior. Although gonadal males, tho...
Sexual differences in immune response appear at puberty
...is established during puberty and is influenced by sex
hormones. These findings have implications for stu...Fas/FasL pathway, which is modulated by the female sex
Male gene may explain higher incidence of Parkinsons in men
...nson's disease. "The SRY gene may also explain the sex
differences in other dopamine-linked disorders with a higher incidence in males, such as schizophrenia or addiction," said Dr Vilain. One in seven people with Parkinson's disease are diagnosed before the age of 50 years, and the prevalence increases ...
Male-specific gene SRY directly controls neuronal function in the brain
...n the brain is that they are caused by circulating sex
hormones, which are generated outside the brain an...LA, now reveal a new dimension to the influence of sex
determination on brain function. The research shows that a single sex-specific gene plays a direct r...
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