Tag: "hormones" at biology news
No evidence that widely prescribed statins protect against prostate cancer
...prostate cancer by reducing production of the male hormones
that fuel cancer growth. Researchers from the Ne...cholesterol is required for the production of male hormones
researchers have theorized that statins may reduce production of these hormones. A large, recent stu...
Acute sleep deprivation leads to changes in nighttime urine production for men and women
...ttime dip) lower levels of sodium regulating hormones
(plasma rennin, angiotensin II and aldosterone) excessive excretion of osmoles (sodium and potassium). A change in the body's hemodynamics, caused by sleep deprivation, seems to account for these observations. ...
Cardio exercise benefits in male vs. female hearts
...ve it is due to chromosomal linked genes or sexual hormones
such as estrogen and testosterone. While the mechanisms behind the differences are unknown, the physiological differences are clear. A new study examining chronic exercise in male and female mice finds that moderate long-term exercise provokes a sex-...
Female gender provides an advantage in renal diseases
...tension, have all been thought to play a part. Sex hormones
(estrogen, testosterone) have also thought to contribute to the differences, as hormones
may influence the body's responses to renal injury. Estrogen especially may exert certain cellular e...
Research aims to identify markers for menopausal women at risk for deadly blood clot
... characteristics) that change and it is known that hormones
affect platelet change. The team is examining what happens to platelets in the presence of hormones
whether platelet microvesicles occur more frequently as a result, if a change is triggered by infec...
The 'female advantage' in kidney disease does not extend to diabetic women
.... Conclusion These findings suggest that sex hormones
play a significant role in the development of diab...estrogen. It may well be that the ratio of the two hormones
is what determines the effect of the hormones
in the diabetic kidney." According to Dr. Maric, "...
Role of thyroid hormones in slumber under investigation at Rutgers
...mden is investigating the possibility that thyroid hormones
have an important role in sleep regulation. Tha...chers will pinpoint precisely how and when thyroid hormones
influence the brains sleep-related structures. Findings could yield new knowledge on a previously un...
UF, French scientists seek test to detect gene doping in athletes
...a and a competitive edge. But because synthetic hormones
such as EPO are prohibited by WADA and readily detected through drug tests, performance-driven athletes have begun searching for stealthier and more powerful alternatives. The next variation of boosting red blood cell production is to actually in...
Disabling a sensory organ prompts female mice to act like male mice
...hey've looked at everything from the influences of hormones
such as testosterone to anatomy, positing that there may be a region of the brain that organizes gender-based behavior. The sensory-controlled neural switch that governs the circuit is most likely different in male and female mice, Dulac noted, but...
News tips from ACS Chemical Biology
... of cardiovascular side effects How the sex hormones
estrogen and testosterone activate cell signaling pathways Helper peptides that can influence the opening of calcium channels in cell membranes A new technique called the double barrel shotgun approach that helps pinpoint key cellular ...
First case of successful ovarian tissue transplantation between two, nonidentical sisters
...ergo ovarian stimulation with follicle stimulating hormones
and then oocyte retrieval. In addition, her sister had asked expressly to be the tissue donor and had refused to undergo ovarian stimulation for oocyte donation. Analysis of the sisters HLA type showed that their genetically different cells coexis...
Females more prone to brain damage from alcohol abuse
...g one funded by the VA, will examine the role that hormones
play in response to alcohol withdrawal, include the possibility that the male hormone androgen exacerbates cell death in males. "What we're looking at now is the involvement of testosterone in mediating the cell death in females," Wiren said. "Not ...
Other highlights in the July 24 JNCI
... risk. Thus, levels of circulating sex steroid hormones
and mammographic density may increase breast cancer risk through different mechanisms, the authors write. Contact: Kevin Myron, media relations, Brigham and Womens Hospital, firstname.lastname@example.org , (617) 534-1605 Broccoli and Other Vegetables ...
Steroids, not songs, spur growth of brain regions in sparrows
...rows, brain areas are directly stimulated by these hormones
to grow and one day such hormones
might possibly help repair brain damage caused by strokes or neurodegenerative diseases, said Brenow...
Study finds hereditary link to premenstrual depression
...related genes like those for receptors for steroid hormones
such as estrogen, we would be able to find gene differences that might explain why some women have these mood disorders and others don't," said Dr. David R. Rubinow, the study's senior author and the Meymandi distinguished professor and chair of psyc...
Elevated CO2 in atmosphere weakens defenses of soybeans to herbivores
...asive insects by down-regulating the expression of hormones
related with defense, which down-regulate the important defense CystPls against beetles, Zavala said. Zavala also explained, Under natural field conditions, elevated CO2 not only increased susceptibility of soybean to herbivory by the invasive spec...
First baby is born after oocytes were matured in the lab and frozen
...o are infertile due to PCOS, the administration of hormones
to stimulate their ovaries to produce eggs can have the dangerous side-effect of over-stimulating their ovaries, resulting in the potentially life-threatening ovarian hyperstimulation syndrome (OHSS). Therefore, being able to obtain successful pregna...
Stressed-out African naked mole-rats may provide clues about human infertility
...lmost all the non-breeding mole-rats so that their hormones
are kept down and their reproductive tracts are un...anslated into the suppression of certain fertility hormones
(luteinizing and follicle stimulating hormones). In the non-breeding females this has the effect of ...
Modern brains have an ancient core
...ry (EMBL) now reveal that the hypothalamus and its hormones
are not purely vertebrate inventions, but have the...nsects and nematode worms rely on the secretion of hormones
to transmit information, but the compounds they use are often very different from the vertebrate cou...
St. Jude study shows genes play an unexpected role in their own activation
... as a messenger for a variety of stimuli including hormones
and nerve-signaling molecules called neurotransmitters. The St. Jude team showed that each gene that responds to CREB chooses which co-factors, or helper molecules, CREB uses to activate that gene. This finding adds an important piece to the puzzl...
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