Presence and localization of endothelin receptor in the rat ovary and its regulation by pituitary gonadotropins

1996 ◽  
Vol 135 (4) ◽  
pp. 449-454 ◽  
Author(s):  
Hisako Otani ◽  
Mareo Yamoto ◽  
Hiroyuki Fujinaga ◽  
Ryosuke Nakano
Keyword(s):  
Steroid Hormones ◽  
Granulosa Cells ◽  
Specific Binding ◽  
Follicle Stimulating Hormone ◽  
Sex Steroid Hormones ◽  
Sex Steroid ◽  
Endothelin Receptor ◽  
Immature Rats ◽  
Rat Ovary ◽  
Dose Dependent

Otani H, Yamoto M. Fujinaga H, Nakano R. Presence and localization of endothelin receptor in the rat ovary and its regulation by pituitary gonadotropins. Eur J Endocrinol 1996:135:449–54. ISSN 0804–4643 In the present study we examined the regulation of receptors for endothelin 1 (ET-1) in rat granulosa cells. We examined the localization and regulation of ET receptors in immature rat ovary and the effects of ET-1 on steroidogenesis in cultured rat granulosa cells. The ovaries used in autoradiography were derived from pregnant mare serum gonadotropin and human chorionic gonadotropin-treated immature rats. Granulosa cells were obtained from diethylstilbestrol-treated immature rats and incubated with 125I-ET-1. Granulosa cells were cultured with ET-1 in the presence or absence of ovine follicle-stimulating hormone. The concentrations of sex steroid hormones in conditioned media were measured by radioimmunoassay. The binding site for ET-1 was localized in the granulosa cells, but not in thecal and luteal cells. Follicle-stimulating hormone (FSH) induced a dose-dependent increase in specific binding for ET-1 to cultured rat granulosa cells. In contrast. luteinizing hormone (LH) induced a dose-dependent decrease in specific binding for ET-1 to cultured rat granulosa cells. Conversely, treatment with prolactin and several sex steroid hormones had no effects on the specific binding of ET-1. Treatment with ET-1 inhibited FSH-stimulated accumulation of progesterone and estradiol in cultured rat granulosa cells. The results indicate that both FSH and LH influence the expression of ET-1 receptor, and that ET-1 may play a regulatory role in the ontogeny of the granulosa cell. Ryosuke Nakano, Department of Obstetrics and Gynecology. Wakayama Medical College, 27 Shichibancho, Wakayama, 640, Japan

186 DUODENAL AND RENAL TRANSIENT RECEPTOR POTENTIAL VANILLOID 6 APPEAR TO BE DISTINCTLY REGULATED BY SEX STEROID HORMONES, ESTROGEN AND PROGESTERONE, IN IMMATURE FEMALE RATS

2009 ◽  
Vol 21 (1) ◽  
pp. 192
Author(s):  
J.-H. Kim ◽  
K.-C. Choi ◽  
E.-B. Jeung
Keyword(s):  
Steroid Hormones ◽  
Transient Receptor Potential ◽  
Receptor Potential ◽  
Sex Steroid Hormones ◽  
Female Rats ◽  
Sex Steroid ◽  
Transient Receptor Potential Vanilloid ◽  
Immature Female ◽  
Immature Rats ◽  
Transient Receptor

Calcium-related proteins include transient receptor potential vanilloid (TRPV) 5 and 6, plasma membrane calcium-ATPase 1b (PMCA1b), and calbindin-D9k and -D28k. The TRPV6 is a major calcium channel located in the apical and basolateral membranes of cell and distributed widely in many other organs, especially in the exocrine tissues such as intestine and uterus. TRPV6s are generally regulated by vitamin D, a dietary calcium ion and hormone. In particular, uterine TRPV6 appears to be affected by sex steroid hormones, which are altered according to estrous cycle and pregnancy. In order to discover the effect of sex steroid hormones on the regulation of TRPV6, we examined the expression of TRPV6 mRNA by using RT-PCR and real-time PCR, and protein expression of TRPV6 by immunohistochemistry (IHC) in the uterus, duodenum, and kidney. To evaluate the effect(s) of sex steroid hormones on its uterine, duodenal, and renal regulation, 17β-estradiol [E2; 40 μg kg–1 of body weight (bw)] and/or progesterone (P4; 4 mg kg–1 of bw) or vehicle (n = 6/each group) were subcutaneously injected into Sprague-Dawley immature female rats (14 days old, n = 24 in total) for 3 days. As a result, the treatments of immature rats with E2 or P4 increased TRPV6 mRNA for calcium function or regulation in the uterus of immature rats. To confirm the specificity of E2 or P4 through their receptors, we treated the immature rats (extra n = 24 in total) with an estrogen receptor-antagonist, ICI 182,780 (ICI; 30 μg kg–1 of bw), and/or progesterone receptor antagonist, RU 486 (10 mg kg–1 of bw), at 3 days prior to E2 or P4 injection. Consequently, an increase in TRPV6 mRNA was observed in the following 2 treatments; ICI plus E2/P4 and E2/P4 alone. In IHC, we further observed that the expression of duodenal TRPV6 was increased by E2 or P4 and E2 or P4 plus ICI, while no difference was observed in renal TRPV6 by the treatments of sex steroid hormones. In conclusion, these results indicate that the expressions of uterine and duodenal TRPV6 may be induced by E2 and P4, but its renal expression may not be controlled by these steroids.

scholarly journals Time- and Dose-Dependent Neuroprotective Effects of Sex Steroid Hormones on Inflammatory Cytokines after a Traumatic Brain Injury

2013 ◽  
Vol 30 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Ali Reza Sarkaki ◽  
Mohammad Khaksari Haddad ◽  
Zahra Soltani ◽  
Nader Shahrokhi ◽  
Mehdi Mahmoodi
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Steroid Hormones ◽  
Inflammatory Cytokines ◽  
Sex Steroid Hormones ◽  
Sex Steroid ◽  
Neuroprotective Effects ◽  
Dose Dependent

scholarly journals Associations between female lung cancer risk and sex steroid hormones: a systematic review and meta-analysis of the worldwide epidemiological evidence on endogenous and exogenous sex steroid hormones

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hui Zeng ◽  
Zhuoyu Yang ◽  
Jiang Li ◽  
Yan Wen ◽  
Zheng Wu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cancer Risk ◽  
Steroid Hormones ◽  
Lung Cancer Risk ◽  
Meta Analysis ◽  
Sex Steroid Hormones ◽  
Sex Steroid ◽  
Sex Steroid Hormone ◽  
Hormone Exposure ◽  
Female Lung Cancer

Abstract Background Published findings suggest sex differences in lung cancer risk and a potential role for sex steroid hormones. Our aim was to perform a meta-analysis to investigate the effects of sex steroid hormone exposure specifically on the risk of lung cancer in women. Methods The PubMed, MEDLINE, Web of Science, and EMBASE databases were searched. The pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) for female lung cancer risk associated with sex steroid hormones were calculated overall and by study design, publication year, population, and smoking status. Sensitivity analysis, publication bias, and subgroup analysis were performed. Results Forty-eight studies published between 1987 and 2019 were included in the study with a total of 31,592 female lung cancer cases and 1,416,320 subjects without lung cancer. Overall, higher levels of sex steroid hormones, both endogenous (OR: 0.92, 95% CI: 0.87–0.98) and exogenous (OR: 0.86, 95% CI: 0.80–0.93), significantly decreased the risk of female lung cancer by 10% (OR: 0.90, 95% CI: 0.86–0.95). The risk of lung cancer decreased more significantly with a higher level of sex steroid hormones in non-smoking women (OR: 0.88, 95% CI: 0.78–0.99) than in smoking women (OR: 0.98, 95% CI: 0.77–1.03), especially in Asia women (OR: 0.84, 95% CI: 0.74–0.96). Conclusions Our meta-analysis reveals an association between higher levels of sex steroid hormone exposure and the decreased risk of female lung cancer. Surveillance of sex steroid hormones might be used for identifying populations at high risk for lung cancer, especially among non-smoking women.

Circulating Levels of Sex Steroid Hormones and Gastric Cancer

2021 ◽  
Author(s):  
Yelda A. Leal ◽  
Minkyo Song ◽  
Jovanny Zabaleta ◽  
Gilberto Medina-Escobedo ◽  
Patrick Caron ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Steroid Hormones ◽  
Sex Steroid Hormones ◽  
Sex Steroid ◽  
Circulating Levels
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