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Tag: "hormonal" at biology news

Female sex hormones play a vital role in defense against sexually transmitted diseases

...than men. "The results directly indicate that the hormonal conditions that provide protection against primary exposure to sexually transmitted viral infections may be very different than those that may be useful in vaccination strategies," said Kaushic. "There is of course the flip side to this as well. Our...

Harmful chemicals may reprogram gene response to estrogen

...screpancy is due to differences in diet, exercise, hormonal factors and chemical exposures. Walker believes more research needs to be done to test this concept in people. "NIEHS is partnering with the National Academy of Sciences to fund additional research on early-life exposures and cancer risk in human po...

Compounds in plastic packaging act as environmental estrogens altering breast genes

... the GABA-ergic system, which could be involved in hormonal regulation and breast cancer development. GAD1 has consistently been overexpressed in primary breast cancer. "In contrast, the BBP exposure modified the genomic signature of the mammary gland primarily at 21 days of age and had less effect later," M...

Alcohol consumption disrupts breastfeeding hormones

...ens is quite the opposite, as alcohol disrupts the hormonal milieu of lactation in a way that could impede suc...en L. Teff. Acute alcohol consumption disrupts the hormonal milieu of lactating women. Journal of Clinical Endocrinology and Metabolism, 2005, 90, 1979-1985. ...

Research may provide new link between soft drinks and weight gain

... fat, fructose doesn't appear to fully trigger the hormonal systems involved in the long-term control of food intake and energy metabolism," said coauthor Dr. Havel. The researchers say that further studies in humans are needed to determine if high-fructose corn syrup in soft drinks is directly responsible f...

Stem cells in bone marrow replenish mouse ovaries

... whether restoration of ovaries could postpone the hormonal effects of menopause and could represent an alternative to hormone replacement therapy. Finally, the researchers would like to find out whether these stem cells could be coaxed to produce eggs in the laboratory, potentially providing a new source of ...

How monarch butterflies are wired for navigation

...y brain may play a role in regulating the insects' hormonal system, to induce the longevity that enables the butterfly to extend its survival in its overwintering grounds in Mexico. The researchers include Ivo Sauman of the Czech Academy of Sciences; Adriana D. Briscoe of the University of California, Irvine...

Pregnant women at higher risk for HIV, Uganda study finds

...s due to sexual behaviors. It may be attributed to hormonal changes affecting the genital tract mucosa or immune responses," said Gray. ...

AIDS expert says global strategy needed to combat feminization of HIV/AIDS

... He also points out that medical research suggests hormonal and developmental factors place young women at gre...al lining is easier for the virus to penetrate; to hormonal factors, such as the use of birth control pills; and to a high incidence of sexually transmitted dis...

UCSD study clarifies insulin's role in blocking release of energy in patients with type II diabetes

...released. But in people with Type II diabetes, the hormonal balance has been thrown off, because the body cont...e often seen together.?/p> “By correcting this hormonal imbalance, researchers may at some point improve treatment options for both obesity and Type II diab...

Plants discriminate between self and non self

...coordination might be based on internal pulsing of hormonal or electrical signals which desynchronize when the plants are separated." Falik is currently working with Dr. David Eissenstat, professor of woody plant physiology and Dr. Roger Koide, professor of horticultural ecology on examining how the latitude...

Prozac for future Plants on Mars

...coordination might be based on internal pulsing of hormonal or electrical signals which desynchronize when the plants are separated." Falik is currently working with Dr. David Eissenstat, professor of woody plant physiology and Dr. Roger Koide, professor of horticultural ecology on examining how the latitude...

Women feel more pain than men, research shows

...rate on biological mechanisms, such as genetic and hormonal differences, it is becoming increasingly clear that social and psychological factors are also important," said Dr Keogh. One example of this is the different strategies men and women use to cope with pain. Whilst women tend to focus on the emotional...

The making of a fat cell

...rol, the researchers said. The study finds that a hormonal cocktail routinely used in the lab induces a key g...s a storage depot for fuel and as cells that sense hormonal and energy status and in response, secrete hormones that maintain whole-body energy balance," said s...

System Drastically Cuts Down Botulism Detection Time

...rol, the researchers said. The study finds that a hormonal cocktail routinely used in the lab induces a key g...s a storage depot for fuel and as cells that sense hormonal and energy status and in response, secrete hormones that maintain whole-body energy balance," said s...

Short-term Bio Sensors Monitor From Afar

...rol, the researchers said. The study finds that a hormonal cocktail routinely used in the lab induces a key g...s a storage depot for fuel and as cells that sense hormonal and energy status and in response, secrete hormones that maintain whole-body energy balance," said s...

Key To Stem Cell Transplant Success Is Tricking Immune System

...rol, the researchers said. The study finds that a hormonal cocktail routinely used in the lab induces a key g...s a storage depot for fuel and as cells that sense hormonal and energy status and in response, secrete hormones that maintain whole-body energy balance," said s...

Studies clarify risk factors for mother-to-child transmission of hepatitis C virus

...rs, who hypothesized that their result may reflect hormonal or genetic differences between men and women in susceptibility or response to infection. Other risk factors significantly associated with transmission were the time in labor (a risk factor in both studies) and use of internal fetal monitoring devices...

Vaginal gel may provide a new approach to HIV prevention

...e Tulane team first gave the monkeys a long-acting hormonal form of 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...

An essential regulator of body weight revealed

...al of these neurons or their ability to respond to hormonal signals could alter eating behavior and body weight regulation. Now that his lab has demonstrated that NPY/AgRP neurons are critical for feeding in adults, Palmiter said the next step will be to investigate what makes them so important. He and his c...

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