The neurosteroid dehydroepiandrosterone (DHEA), produced by neurons and glia, affects multiple processes in the brain, including neuronal survival and neurogenesis during development and in aging. We provide evidence that DHEA interacts with pro-survival TrkA and pro-death p75(NTR) membrane receptors of neurotrophin nerve growth factor (NGF), acting as a neurotrophic factor: (1) the anti-apopto...

Previous studies have shown a significant effect of insulin administration on serum dehydroepiandrosterone sulfate (DHEA-S) concentration and its metabolic rate, with evidence for the effect in men, but not in women. This could lead to differences in the sources of variation in serum DHEA-S between men and women and in its covariation with insulin concentration. This study aimed to test whether...

AIM Several clinical trials have indicated that dehydroepiandrosterone (DHEA) reduces coronary events associated with atherosclerosis. The aim of this study was to examine the inhibitory effect of DHEA on atherosclerosis and the mechanisms involved. METHODS Apolipoprotein E-knockout (apoE-KO) mice were fed an atherogenic high-cholesterol diet with or without 0.4% (w/w) DHEA for 12 weeks. RE...

OBJECTIVE This study was designed to assess possible antidepressant effects of dehydroepiandrosterone (DHEA), an abundant adrenocortical hormone in humans. METHOD Twenty-two patients with major depression, either medication-free or on stabilized antidepressant regimens, received either DHEA (maximum dose = 90 mg/day) or placebo for 6 weeks in a double-blind manner and were rated at baseline a...

The present investigation was designed to provide the first empirical examination of the effects of acute dehydroepiandrosterone (DHEA) administration on subjective and physiological sexual arousal in women. The primary purpose was to assess whether DHEA influences vaginal blood flow response in sexually functional women. Subjective (self-report) and physiological (vaginal photoplethysmograph) ...

Dehydroepiandrosterone (DHEA) and its sulfated ester are found in high concentrations in the plasma; however, their role in normal human physiology, other than as precursors for sex hormones, remains incompletely defined. Studies of rodent models have shown that these hormones have beneficial effects on a wide variety of conditions, such as diabetes, obesity, immune function, atherosclerosis, a...

After testosterone, dehydroepiandrosterone (DHEA) is themainhormone involved inaggressivebehaviour in birds. While the role of DHEA has been verified for wintering territorial passerines, it has not been shown for gregarious species. In wintering geese species, both sexes present very low testosterone levels and aggression in a non-sexual context is not testosterone-related. Therefore, testoste...

conclusions the identification of the beneficial cardiovascular effects of dhea (s) and a better understanding of the involved mechanisms should be helpful to develop new strategies or pharmacologic approaches for many lethal diseases in western countries. context dehydroepiandrosterone (dhea) and its sulfate ester, dehydroepiandrosterone sulfate (dhea-s) have been considered as putative anti-a...

This study analyzes in detail the serum concentration of the active androgens and estrogens, as well as a series of free and conjugated forms of their precursors and metabolites, after daily application for 2 weeks of 10 mL 20% dehydroepiandrosterone (DHEA) solution on the skin to avoid first passage through the liver. In men, DHEA administration caused 175%, 90%, 200% and 120% increases in the...