sex 2 2

Tag: "sex" at biology news

IMF Launches World’s First DNA Database for Myeloma Patients

... That does not exclude males with an average-sized sex organ, called a gonopodium. These fish out-compete the larger-endowed males in a predator-laden environment because they have a faster burst speed than the males with larger genitalia, who lose out because the size of their organ slows them down, mak...

Diabetic nerve therapy shows 'striking' results

...cur in other organs, including the heart, kidneys, sex organs, eyes and digestive tract. The incidence of diabetes, a condition in which the amount of glucose in the blood is too high, is increasing dramatically, with the World Health Organisation estimating that some 300 million people worldwide could ...

Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers

... hepatitis C test results, type of operation, age, sex and history of intravenous drug use. The researchers found that 38 percent of all operations involved a bloodborne pathogen, and almost half (47 percent) of all men tested positive for at least one infection. HIV accounted for 26 percent of infectio...

Environmental chemical cocktail may sabotage sperm

...n that certain chemicals known to mimic the female sex hormone, oestrogen, could individually affect the correct functioning of mouse sperm, but now her new research showed that when the chemicals were combined they had an even stronger effect. In addition, when she tested one chemical, genistein (found ...

Men Estimate Men's Risks Of Common Disorders Higher Than Women Do, And Vice Versa

...omen believe health risks are higher for their own sex than for the opposite sex. But, it also shows that...nder tends to think risks are higher for their own sex than for the other gender. Previous studies suggest that lay people and health professionals operate...

Pregnant women at higher risk for HIV, Uganda study finds

... HIV acquisition during pregnancy and promote safe sex or sexual abstinence where feasible." The study supports the findings of two previous studies that reported a greater risk of acquiring HIV during pregnancy than after delivery. However, neither study accounted for risk factors that contribute to HI...

Why were the HIV prevention trials in commercial sex workers abandoned?

...stem the global HIV epidemic is to give commercial sex workers an HIV medication (such as the drug tenofovir) before they have high risk sex in the hope of reducing their chances of becoming infected, an approach called "pre-exposure prophyl...

Gene controlling circadian rhythms linked to drug addiction

...d by naturally rewarding experiences such as food, sex and the use of certain drugs. In the study, mice that lacked the Clock gene were injected with cocaine. Not only did the mice experience problems with their circadian cycles - not sleeping as much and becoming more hyperactive - they also found coca...

Geckos: It's not always about sex

...gecko. This line of all-female geckos doesn't need sex or a male to reproduce and, contrary to expectatio...traditional theory is that when a species gives up sex and reproduces through cloning, the offspring will have reduced performance." Parthenogenetic creat...

Secret sex life of killer fungus?

...f characteristics of sex. The possible presence of sex in the species is highly significant because it ma...xes, or "mating types," which in theory could have sex with each other. Additional work on specific populations of the fungus in America and Europe showed ...

Hanging baskets of sex and death help fruit growers

...chers at the University of Warwick to harness the sex drive of a major pest of fruit orchards as a weapon to spread a virus to kill that very same pest. The device allows growers to selectively target the pest with a virus that kills its larvae without killing other beneficial insects. The researc...

Single gene is genetic switch for fly sexual behavior

... In these cases, "we have been able to reverse the sex roles during Drosophila courtship," Dickson and Demir say. Dickson and Demir created male-spliced versions of fruitless in female flies and female-spliced versions in male flies. Males with the female version of fruitless "barely court at all" when ...

Survey Uncovers Surprising Attitudes Towards HIV Vaccine Research

...HIV ?African Americans, Hispanics and men who have sex with men. The survey uncovered some unexpected at...6 percent of Hispanics, 13 percent of men who have sex with men, and 18 percent of the general population believe that an HIV vaccine already exists but is...

MBL researchers probe how an ancient microbe thrives and evolves without sex

...suggests bdelloid rotifers--which probably gave up sex at least 50 million years ago but have still evolved into 370 species--handle DNA transposons more efficiently than other asexual species. Transposons are small snippets of "junk DNA" that sexual reproduction compensates for, but which often go unche...

Asian immigrants in NYC not receiving HIV education at religious institutions

...setting, largely because Asians generally consider sex outside of marriage, homosexuality, and drug use t...c message could be that non-marital and homosexual sex are absolutely forbidden. These religious institutions are awash in "the tension between morality an...

PLoS Medicine publishes first trial of effect of male circumcision on HIV infection

... is why the participants were asked to not to have sex for six weeks after the operation). A further concern is that circumcised men, considering themselves to be "protected," might be more likely to engage in unsafe sex. Research is also needed to find out whether male circumcision only has a preventive...

Living anti-HIV gel shows early promise

...HIV/AIDS would need to be applied regularly before sex and this is likely to limit their use, say the researchers. In an article published yesterday (August 30) in the Proceedings of the National Academy of Sciences, Laurel Lagenaur and Edward Berger of the US National Institutes of Health, point out th...

2005 AIDS figures released by WHO and UNAIDS

...regnant women, signs of increased condom use among sex workers and expansion of voluntary HIV testing and...ly Asia, the combination of injecting drug use and sex work is fuelling epidemics, and prevention programmes are falling short of addressing this overlap. ...

Seaweed yields new compounds with pharmaceutical potential

...roduction of chemical cues, such as those used for sex recognition." Hay, Kubanek, and their colleagues collected baseball-sized samples of reef species that exhibit unusual growth and/or behavioral phenomena. Among their collection were soft corals, marine sponges, slugs, and green, red and brown seaw...

Earliest European Farmers Left Little Genetic Mark On Modern Europe

...regnant women, signs of increased condom use among sex workers and expansion of voluntary HIV testing and...ly Asia, the combination of injecting drug use and sex work is fuelling epidemics, and prevention programmes are falling short of addressing this overlap. ...

1 2 3 4 5 6 7