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Tag: "sexually" at biology news

Geckos: It's not always about sex

...oman" geckos can run farther and faster than their sexually reproducing relatives. The research findings are published in the journal Physiological and Biochemical Zoology (Vol. 78, 3, May/June 2005) by Michael Kearney, Rebecca Wahl and Kellar Autumn. "This is extraordinary," said Autumn, associate professor...

Secret sex life of killer fungus?

...are important because if the fungus does reproduce sexually as part of its life cycle, it might evolve more rapidly to become resistant to antifungal drugs used to control disease; sexual reproduction might lead to new strains with increased ability to cause disease and infect humans. Nevertheless, the sexual...

Methamphetamine Abuse, HIV Infection Cause Changes in Brain Structure

...e abuse is linked with HIV, hepatitis C, and other sexually transmitted diseases, not only by the use of contaminated injection equipment, but also due to increased risky sexual behaviors,?says Dr. Nora D. Volkow, director of the National Institute on Drug Abuse (NIDA), National Institutes of Health, which he...

Scientists find a maturity gene in fly

...amorphosis ?maturation from an immature larva to a sexually active adult. It is the first genetic mutation fou...om a juvenile, non-reproductive stage to a mature, sexually reproductive adult," says Thummel, a professor of human genetics at the university and an investigat...

MWG Biotech expands siMAX?siRNA portfolio with new scales, lengths and design tools

...amorphosis ?maturation from an immature larva to a sexually active adult. It is the first genetic mutation fou...om a juvenile, non-reproductive stage to a mature, sexually reproductive adult," says Thummel, a professor of human genetics at the university and an investigat...

Vaginal gel may provide a new approach to HIV prevention

...ically to reduce the transmission of HIV and other sexually transmitted infections. Ronald Veazey, chair of the Division of Comparative Pathology at the Tulane National Primate Research Center, lead author of the paper, conducted the research with simian-human immunodeficiency virus (SHIV), a hybrid virus m...

Weapon performance determines mating success in the collared lizard

...eastern collared lizard (Crotaphytus collaris ), a sexually dimorphic lizard in which the jaws of males function as a weapon in fights, to test the hypothesis that weapon performance (i.e., bite force) is a better predictor of fitness than body size and weapon size. The study finds that bite-force performanc...

Scientists unpick genetics of first 15 minutes of life

... a crucial role in the most fundamental process in sexually reproducing animals. The absence or mutation of t...sex, the same genetic processes are present in all sexually reproducing animals, including humans. "All sexually reproducing animals do the same kind of DNA 'd...

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

...iversal practice. The researchers offered young sexually active uncircumcised heterosexual men the chance to be circumcised and then monitored for HIV infection. The participants (3,274 men) were randomly allocated to two different groups--one group was immediately circumcised and the other group was to re...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...d that most Vancouver Island outbreak isolates are sexually fertile, but all are of one "sex," a trend that would seem to preclude the normal sexual cycle. A recent laboratory study led by Heitman's group suggested a possible explanation: the related yeast C. neoformans can undergo same-sex mating between two...

Chlamydia parasite lives off our fat

...tions are responsible for a range of ailments from sexually transmitted infections to atypical pneumonias to chronic severe disorders such as pelvic inflammatory disease and atherosclerosis. The Centers for Disease Control says that Chlamydia trachomatis is the most common sexually-transmitted infection in th...

Parents need to be educated about HPV vaccinations for daughters

...tunity to have their daughters immunised against a sexually transmitted virus that is the major cause of cervi...on should not be misconstrued as a green light for sexually permissive behaviour ?rather, it is an effective means of preventing HPV infection when young women ...

Sexual reproduction delays aging in a mammalian species

...ising young together. Whereas the breeding pair is sexually active throughout the year, the helpers are sexually quiescent. By comparing the long-term survival of breeders and non-breeders, Dammann and Burda found...

Hyena mothers give their cubs a helpful dose of hormones

...make her budding young leaders more aggressive and sexually advanced. The report, published in the April 27 issue of Nature, is the first study in mammals to demonstrate a relationship between a female's social rank and her ability to influence her offspring's behavior through prenatal hormone transfer. Prev...

Protein finding could lead to treatment for inflammatory diseases

...benign, short-lived skin infection in children and sexually active young adults. It is a common disease, with antibodies detected in up to 50 percent of populations tested in numerous studies. The lesions resemble chickenpox (a disease actually caused by a herpes virus) and are often confused as such. There ...

Anti-HIV drug has potential to prevent transmission in women

...o prevent the sexual transmission of HIV and other sexually transmitted diseases and may be formulated as vaginal gels, foams, creams, or suppositories. "The results of this study may change the way the research community looks at developing safe and effective microbicides," says lead author Kenneth H. Maye...

Access to antiretrovirals unlikely to reduce HIV infection rates

... them feel physically better and more likely to be sexually active) and counseling (which will hopefully incre... infection, as these people live longer and become sexually active again. If ART is also provided to HIV-positive individuals at an earlier stage, i.e. when the...

Face perception is modulated by sexual orientation

...ould exhibit a greater response to faces they deem sexually preferable. Specifically, the researchers predicted similar responses to male and female faces in the visual cortex, where facial identity is processed, but differential responses in the amygdala and the reward circuitry, where a "value" is assigned ...

New licensing agreement to maximize AIDS drug development

...d microbicides for the prevention of HIV and other sexually transmitted diseases. The three microbicides c... to prevent the transmission of HIV/AIDS and other sexually transmitted diseases. CONRAD is administered through the Department of Obstetrics and Gynecology at...

Teens unaware of sexually transmitted diseases until they catch one, Carnegie Mellon study finds

Most sexually active teenage girls know relatively little about sexually transmitted diseases (STDs) until it is too late, according to a paper by Carnegie Mellon University...

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