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Tag: "menstrual" at biology news

BRCA1 causes ovarian cancer through indirect, biochemical route

...ted with ovulation, in that women who have regular menstrual cycles through their life without interruption by ... we had some clues that the cells that control the menstrual cycle-the ovarian granulosa cells-have an influence on ovarian cancer." But how? Was that influence...

Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth

...tion related to four time periods: menarche (first menstrual period), first birth, 20 years prior to the interview and 10 years prior. Several information sources provided data on traffic volumes on roads in question for the years from 1960 to 2002 and tail-pipe emissions, including measurements from tunnels ...

First frozen egg baby born in Canada

...y, current egg donor programs require matching the menstrual cycle of egg recipients; this problem can be eliminated with egg freezing. ...

Women cautioned against using herbal supplements

...cts was found in about half the women studied. For menstrual pain, two clinical trials have examined the Japanese herbal preparations toki-shakuyakusan and toki-shakuyakusan with shakuyaku-kanzoto; neither found a beneficial effect. "Some herbal medicines show promise for the treatment of problems with menstr...

Menopause Symptoms May Come Back After Stopping Menopausal Hormone Therapy

...cts was found in about half the women studied. For menstrual pain, two clinical trials have examined the Japanese herbal preparations toki-shakuyakusan and toki-shakuyakusan with shakuyaku-kanzoto; neither found a beneficial effect. "Some herbal medicines show promise for the treatment of problems with menstr...

Vaginal gel may provide a new approach to HIV prevention

... birth control (Depo-Provera) to synchronize their menstrual cycles and thin the vaginal membrane, which increases susceptibility to virus infection, Veazey says. During testing, researchers placed the experimental gels in the animals' vaginas. Thirty minutes later, the animals were exposed to high-dose SHIV. ...

New study examines how sense of smell affects mating and aggression in mice

...on of certain physiological functions, such as the menstrual cycle." Stimulation of the other senses also has a direct effect on behavior, he adds. "When you touch a hot pan, you immediately draw your hand away. Or, if you place your finger in an infant's palm, the baby will grasp it instinctively." The curr...

Olfactory system detects pheromones that control reproduction

...o live in close quarters tend to have synchronized menstrual cycles. But it was also believed that humans would need a functional vomeronasal organ in order to sense pheromones -- and there is no evidence for such an organ in humans. "But now that we have identified an olfactory circuit that plays a role in s...

The brain is broadly wired for reproduction

... -- including onset of puberty, ovulation, and the menstrual cycle in females and testosterone production in males -- by regulating the release of hormones from the pituitary gland. Interestingly, GnRH neurons also appear to be involved in the control of sexual behaviors. "Consistent with the idea that GnRH ...

Clues to breast cancer hidden inside stem cells

...ifferentiation and apoptosis also happens in every menstrual cycle and in a more dramatic form during pregnancy. "This caught our attention, and has driven our research," Sigurdsson pointed out. Breast cancer almost always occurs in the luminal epithelial compartment, which is also where milk is produced. Per...

Potential heart benefit found in stem cells

...sity School of Medicine in Japan, new sources from menstrual blood-derived endometrial cells and umbilical cord...function. In the first study, the team collected menstrual blood from six women to obtain a sample of endometrial cells (E-DOM). The researchers found that ap...

Component in soy products causes reproductive problems in laboratory mice

...en genistein immediately after birth had irregular menstrual cycles, problems with ovulation, and problems with fertility as they reached adulthood. The new study looks at the direct effects of genistein on the ovaries during early development. "We knew genistein was linked to reproductive problems later in l...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

... pills and were scanned at the same point in their menstrual cycles. In addition to the differences in dopamine receptor activation in certain areas of the brain across all the participants, the scans also revealed differences between individuals in the level of their dopamine response and their self-rated...

UCSF study will test new vaginal microbicide for herpes and HIV

...t or breast feeding. They must either have regular menstrual periods or not have them at all. Moscicki said that the safety trial is important because earlier spermicidal microbicides like nonoxynol 9, which was an ingredient in a variety of contraceptive products from condoms to contraceptive creams and g...

The influence of the menstrual cycle on the female brain

... cocaine is greater in the follicular phase of the menstrual cycle4 than in the luteal phase5.Moreover, schizop...ons. 4. Follicular phase: the first part of the menstrual cycle starting from the first day of the period. 5 Luteal phase: the second pat of the menstrual ...

Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

Fluctuations in sex hormone levels during women's menstrual cycles affect the responsiveness of their brains' ... their circuitry was more active if they were in a menstrual phase preceding ovulation and dominated by estrogen, compared to a phase when estrogen and progester...

Focused ultrasound relieves fibroid symptoms in women

...e fibroids. Fibroid symptoms can include excessive menstrual bleeding, enlarged uterine size, frequent urination, pelvic pressure or pain and infertility. According to the National Women’s Health Information Center, fibroids are the primary reason for surgical removal of the uterus, accounting for approxim...

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