background: endometriosis is a complex estrogen-dependent disease that is defined as the presence of endometrial gland and stroma outside the uterine cavity. although the exact mechanism for the development of endometriosis remains unclear, there is a large body of research data and circumstantial evidence that suggests a crucial role of estrogen in the establishment and maintenance of this dis...

It has long been known that estradiol influences synaptic plasticity in the female hippocampus. The density of dendritic spines varies during the estrous cycle and correlates positively with varying levels of estradiol in serum. In accordance, ovariectomy results in a loss of spines that can be rescued by estradiol treatment in animals, suggesting that estradiol originating from the ovaries ind...

BACKGROUND Accurate measurement of estradiol is important in clinical settings. The quality of laboratory estimations of estradiol may be assessed through external quality-assurance surveys. METHODS Estradiol was measured by microparticle enzyme immunoassay (MEIA) and other immunoassays. Proficiency testing of medical laboratories was conducted using samples prepared from normal male human se...

In addition to mediating sexual maturation and reproduction through stimulation of classical intracellular receptors that bind DNA and regulate gene expression, estradiol is also thought to influence various brain functions by acting on receptors localized to the neuronal membrane surface. Many intracellular signaling pathways and modulatory proteins are affected by estradiol via this unconvent...

Recent studies suggest that the rapid and nongenomic effects of estradiol may be mediated through the G protein-coupled receptor dubbed GPR30 receptor. The present study examines the role of GPR30 versus a classical estrogen receptor (ERalpha) in mediating the growth regulatory effects of estradiol. GPR30 is readily detectable in freshly isolated vascular tissue but barely detectable in culture...

Abstract Background Sex hormones may be associated with a higher incidence of ischemic stroke or stroke-related events. In observational studies, lower testosterone concentrations are infirmity, vascular disease, and adverse cardiovascular risk factors. Currently, female sexual considered neuroprotective agents. The purpose this study was to assess the role sex ratio estradiol/testosterone (E/T...

Estradiol, a major form of estrogen, plays crucial role in various aspects brain function, including neuronal health, synaptic plasticity, and cognitive processes. Therefore, it is interest to investigate the histopathological changes rat following estradiol treatment unilateral bilateral ovariectomized rats, commonly used method induce estrogen deficiency study consequences hormonal changes. T...

Estradiol renal receptor molecules and estradiol-dependent antinatriuresis. A 35 % decrease in urinary excretion of sodium was produced when 1713-estradiol was administered to adrenalectomized male rats in doses of 40 jig/day. Such estrogendependent retention of sodium independent of mineralocorticoid secretion suggests the possibility of a direct effect of estrogens on the renal tubule. We her...

Background: Therapies available for thin endometrium are limited and mostly performed experimentally which most of these treatments have a similar function increase blood flow to the endometrium, causing it thicken develop. The aim study was compare effect estradiol valerate in combination with sildenafil on endometrial thickness infertile women before intrauterine insemination. Methods: In thi...

OBJECTIVE To evaluate the influence of 2 continuous combined estrogen-progestin replacement products, compared with unopposed estrogen and placebo, on cardiovascular risk markers in postmenopausal women in a randomized, double-blind, placebo-controlled trial. METHODS Two hundred seventy healthy postmenopausal women were randomly assigned to 1 of 4 treatment groups: placebo, unopposed 17-beta ...