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Data on hormones discussed by researchers at University of Texas.
"Neuroendocrine mechanisms underlying complementary behaviors like male-typical mounting and female-typical receptivity are most often studied independently in males and females, respectively. Cnemidophorus uniparens is a unisexual lizard species consisting only of females that alternately express male- and female-like pseudosexual behavior across the ovarian cycle," researchers in the United States report (see also Hormones).
"Intact, postovulatory (PostOv), and ovariectomized (OVX), androgen-implanted animals [OVX plus testosterone (T)] exhibit male- like mounting, but not receptivity, whereas intact, preovulatory (PreOv), and OVX lizards injected with estradiol [OVX plus estrogen (E)] express receptivity, but not mounting. We tested whether the serotonergic system in the preoptic area (POA) and ventromedial nucleus of the hypothalamus (VMN) gates the reciprocal inhibition characterizing this alternating expression of mounting and receptivity. Serotonergic signaling at the POA appears to be key to gating male- like behavior. Postovulatory and OVX plus T animals have lower intracellular serotonin (5-HT) levels, and greater abundance of inhibitory 5-HT1A receptor mRNA in the POA compared with both PreOv and OVX plus E lizards. Moreover, injecting 5-HT into the POA of OVX plus T animals suppresses mounting, whereas injection into VMN of OVX plus E lizards suppresses receptivity. Although 5-HT levels in the VMN do not differ ...
- Study data from Nanjing University, Medical Department update knowledge of...
- Magazine article from: Women's Health Weekly August 7, 2008 700+ words
...weighing 250-300 g were randomly divided into seven groups: Sham, ovariectomized (OVX), OVX plus estradiol vaterate, OVX plus ipriflavone, OVX plus raloxifene, OVX plus tibolone, OVX plus low-dose estradiol valerate and ipriflavone...
- New ovariectomy study findings have been reported by researchers at University...
- Magazine article from: Women's Health Weekly November 27, 2008 700+ words
...SC), OVX control rats (OC), and OVX plus VDN-treated rats (OVN). Dissections...This article was prepared by Women's Health Weekly editors from staff and other reports. Copyright 2008, Women's Health Weekly via NewsRx.com.
- Charter Hospital Closings May Signal Bigger Problems Ahead, Reports Mental...
- Press release article from: PR Newswire February 14, 2000 700+ words
...reports this week's issue of Mental Health Weekly. The stark numbers include 33 hospital...Karen Keiser-Jenkins told Mental Health Weekly last week. Keiser-Jenkins says the...Newswire. For more information on Mental Health Weekly, click on "Newsletters" to receive...
- Problems With Managed Mental Health Program Hold Lesson For Other States,...
- Press release article from: PR Newswire February 15, 1999 700+ words
...contract in state history, this week's issue of Mental Health Weekly reports. Earlier this month, the Montana legislature...Magellan. Center executive director Paul Meyer told Mental Health Weekly that in the last six months, Magellan has denied $500...
- News You Can Use.(Rachel's Environmental and Health Weekly, periodical)(Brief...
- Magazine article from: E Franz, Damon January 1, 2000 700+ words
...weekly publication of the Environmental Research Foundation (ERF). Much like its namesake, Rachel's Environment and Health Weekly sounds the warning about hazardous substances and technologies that threaten human and that environmental health. Rachel...
- Wine slightly better than beer for cardiac health.(Weekly Marketplace)(Brief...
- Magazine article from: Modern Brewery Age February 14, 2005 700+ words
A recent article in the Journal of Thrombosis and Haemostasis determined that drinkers of wine benefit from its cardioprotective effects, more so than those who drink beer or other spirits, and wine drinkers may also live longer. The article is part of a series of papers published in an open forum
- Flaxseed for Cholesterol Reduction.
- Newspaper article from: Alternative Therapies in Women's Health August 1, 2005 700+ words
...Seventy-two female Golden Syrian hamsters were randomly assigned to six groups (n = 12): sham, ovariectomized (ovx), or ovx plus either 17-beta-estradiol (10 mcg/kg body weight) or semi-purified diet adjusted for macronutrients and fiber to contain...
- NEWSFILE INTERNET WEB SITE NEW FREE SOURCE OF MEDICAL AND HEALTH NEWS
- Press release article from: PR Newswire September 8, 1995 700+ words
...Weekly, Vaccine Weekly, and Women's Health Weekly. Hypertext links are provided to other...Athens, Georgia-based Women's Health Weekly with journalist Michelle Marble. Women's Health Weekly (phone/fax 706-543-7379) gained...