Androgens influence microvascular dilation in PCOS through ET-A and ET-B receptors.
Androgens influence microvascular dilation in PCOS through ET-A and ET-B receptors.
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雄激素通过 ET-A 和 ET-B 受体影响 PCOS 的微血管扩张。
DOI:
10.1152/ajpendo.00343.2013
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Stachenfeld,NinaS
中科院分区:
文献类型:
--
作者:
Wenner,MeganM;Taylor,HughS;Stachenfeld,NinaS
Hyperandrogenism and vascular dysfunction often coexist in women with polycystic ovary syndrome (PCOS). We hypothesized that testosterone compromises cutaneous microvascular dilation in women with PCOS via the endothelin-1 ET-B subtype receptor. To control and isolate testosterone's effects on microvascular dilation, we administered a gonadotropin-releasing hormone antagonist (GnRHant) for 11 days in obese, otherwise healthy women [controls, 22.0 yr, 36.0 (3.2) kg/m2] or women with PCOS [23 yr, 35.4 (1.3) kg/m2], adding testosterone (T; 2.5 mg/day) ondays 8–11. Using laser Doppler flowmetry and cutaneous microdialysis, we measured changes in skin microcirculatory responsiveness (ΔCVC) to local heating while perfusing ET-A (BQ-123) and ET-B (BQ-788) receptor antagonists under three experimental conditions: baseline (BL; prehormone intervention), GnRHant (day 4of administration), and T administration. At BL, ET-A receptor inhibition enhanced heat-induced vasodilation in both groups [ΔCVC control 2.03 (0.65), PCOS 2.10 (0.25), AU/mmHg,P< 0.05]; ET-B receptor inhibition reduced vasodilation in controls only [ΔCVC 0.98 (0.39), 1.41 (0.45) AU/mmHg for controls, PCOS] compared with saline [ΔCVC controls 1.27 (0.48), PCOS 1.31 (0.13) AU/mmHg]. GnRHant enhanced vasodilation in PCOS [saline ΔCVC 1.69 (0.23) AU/mmHg vs. BL,P< 0.05] and abolished the ET-A effect in both groups, a response reasserted with T in controls. ET-B receptor inhibition reduced heat-induced vasodilation in both groups during GnRHant and T [ΔCVC, controls: 0.95 (0.21) vs. 0.51 ; PCOS: 1.27 (0.23) vs. 0.84 (0.27); for GnRHant vs. T,P< 0.05]. These data demonstrate that androgen suppression improves microvascular dilation in PCOS via ET-A and ET-B receptors.
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DOI:
--
发表时间:
1985
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Murray,HW;Gellene,RA;Libby,DM;Rothermel,CD;Rubin,BY
通讯作者:
Rubin,BY
DOI:
10.1001/jama.1982.03330220024029
发表时间:
1982
期刊:
JAMA
影响因子:
--
作者:
P. Zakowski;S. Fligiel;O. Berlin;B. Johnson
通讯作者:
B. Johnson
影响因子:
158.5
作者:
LANE, HC;DEPPER, JM;FAUCI, AS
通讯作者:
FAUCI, AS
DOI:
10.1056/nejm198512123132403
发表时间:
1985
期刊:
The New England journal of medicine
影响因子:
--
作者:
Murray,HW;Hillman,JK;Rubin,BY;Kelly,CD;Jacobs,JL;Tyler,LW;Donelly,DM;Carriero,SM;Godbold,JH;Roberts,RB
通讯作者:
Roberts,RB
影响因子:
15.3
作者:
I. Orme;Frank M. Collins
通讯作者:
Frank M. Collins