Effects of 24-hour oral estradiol-valerate administration on hormone levels in men and pre-menopausal women

被引:2
|
作者
Rune, Gabriele M. [1 ]
Joue, Gina [2 ]
Sommer, Tobias [2 ]
机构
[1] Charite Anat, Inst Cell Biol & Neurobiol, Charitepl 1, D-10117 Berlin, Germany
[2] Univ Med Ctr Hamburg Eppendorf, Inst Syst Neurosci, Martinistr 52, D-20248 Hamburg, Germany
关键词
Estrogen; Luteinizing hormone; Follicle stimulating hormone; Testosterone; Insulin-like growth factor 1; GONADOTROPIN-RELEASING-HORMONE; BINDING GLOBULIN; STEROID-HORMONES; GROWTH-HORMONE; ESTROGEN; SEX; TESTOSTERONE; FEMALE; SECRETION; MEMORY;
D O I
10.1016/j.psyneuen.2023.106320
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
In order to translate the findings from the vast animal literature on the effect of 178-estradiol (E2) on brain and behavior to humans, a placebo-controlled pharmacological enhancement of E2 levels for at least 24 h is necessary. However, an exogenous increase in E2 for such a prolonged period might affect the endogenous secretion of other (neuroactive) hormones. Such effects would be of relevance for the interpretation of the effects of this pharmacological regimen on cognition and its neural correlates as well as be of basic scientific interest. We therefore administered a double dose of 12 mg of estradiol-valerate (E2V) to men and of 8 mg to naturally cycling women in their low-hormone phase, and assessed the concentration of two steroids critical to hormone regulation: follicle stimulating hormone (FSH) and luteinizing hormone (LH). We also assessed any changes in concentration of the neuroactive hormones progesterone (P4), testosterone (TST), dihydrotestosterone (DHT) and immune-like growth factor 1 (IGF-1). This regimen resulted in similar E2 levels in both sexes (saliva and serum). FSH and LH levels in both sexes were down-regulated to the same degree. P4 concentration decreased in both sexes only in serum but not saliva. TST and DHT levels dropped only in men whereas sex-hormone binding globulin was not affected. Finally, the concentration of IGF-1 decreased in both sexes. Based on previous studies on the effects of these neuroactive hormones, only the degree of downregulation of TST and DHT levels in men might have an impact on brain and behavior, which should be considered when interpreting the effects of the presented E2V regimes.
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页数:8
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