Suppression of growth hormone (GH) secretion by a selective GH-releasing hormone (GHRH) antagonist. Direct evidence for involvement of endogenous GHRH in the generation of GH pulses.
Suppression of growth hormone (GH) secretion by a selective GH-releasing hormone (GHRH) antagonist. Direct evidence for involvement of endogenous GHRH in the generation of GH pulses.
复制标题
通过选择性 GH 释放激素 (GHRH) 拮抗剂抑制生长激素 (GH) 分泌。
DOI:
10.1172/jci116639
复制
发表时间:
1993
期刊:
影响因子:
--
通讯作者:
Barkan,AL
中科院分区:
文献类型:
--
作者:
Jaffe,CA;Friberg,RD;Barkan,AL
To study the potential involvement of growth hormone-releasing hormone (GHRH) in the generation of growth hormone (GH) pulses in humans we have used a competitive antagonist to the GHRH receptor, (N-Ac-Tyr1,D-Arg2)GHRH(1-29)NH2(GHRH-Ant). Six healthy young men were given a bolus injection of GHRH-Ant 400 micrograms/kg body wt or vehicle at 2200 h and nocturnal GH concentrations were assessed by every 10-min blood sampling until 0800 h. Integrated total and pulsatile GH secretion were suppressed during GHRH-Ant treatment by 40 +/- 6 (SE) % and 75 +/- 5%, respectively. GHRH-Ant suppressed maximum (7.6 +/- 2.2 vs 1.8 +/- 0.5 micrograms/liter; P < 0.001) and mean (3.3 +/- 1.0 vs 1.1 +/- 0.2 micrograms/liter; P = 0.02) GH pulse amplitudes. There was no change in integrated nonpulsatile GH levels, pulse frequency, or interpulse GH concentration. GHRH-Ant 400 micrograms/kg also suppressed the GH responses to intravenous boluses of GHRH 0.33 micrograms/kg given 1, 6, 12, and 24 h later by 95, 81, 59, and 4%, respectively. In five healthy men, the responses to 10-fold larger GHRH boluses (3.3 micrograms/kg) were suppressed by 82 and 0%, 1 and 6 h after GHRH-Ant 400 micrograms/kg, respectively. These studies provide the first direct evidence that endogenous GHRH participates in the generation of spontaneous GH pulses in humans.
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影响因子:
4.8
作者:
R. Clark;I. Robinson
通讯作者:
I. Robinson
影响因子:
4.8
作者:
J. Cowan;B. Moor;A. Chow;J. Kraicer
通讯作者:
J. Kraicer
影响因子:
4.8
作者:
G. Tannenbaum;J. B. Martin;E. Colle
通讯作者:
E. Colle
DOI:
10.1210/jcem.74.4.1548337
发表时间:
1992
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
Hartman,ML;Veldhuis,JD;Johnson,ML;Lee,MM;Alberti,KG;Samojlik,E;Thorner,MO
通讯作者:
Thorner,MO
影响因子:
5.8
作者:
Zvi Zadik;S. Chalew;A. Kowarski
通讯作者:
A. Kowarski