GROWTH HORMONE PRETREATMENT IN MAN BLOCKS THE RESPONSE TO GROWTH HORMONE‐RELEASING HORMONE; EVIDENCE FOR A DIRECT EFFECT OF GROWTH HORMONE

GROWTH HORMONE PRETREATMENT IN MAN BLOCKS THE RESPONSE TO GROWTH HORMONE‐RELEASING HORMONE; EVIDENCE FOR A DIRECT EFFECT OF GROWTH HORMONE
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人类生长激素预处理可阻断生长激素释放激素的反应;生长激素直接作用的证据

DOI:
10.1111/j.1365-2265.1987.tb03645.x
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发表时间:
1987
影响因子:
3.2
通讯作者:
G. M. Besser
G. M. Besser
中科院分区:
医学3区
文献类型:
--
作者:
Richard J. Ross;F. Borges;A. Grossman;Roger Smith;L. Ngahfoong;Lesley H. Rees;M. O. Savage;G. M. Besser

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在正常受试者中研究了生物合成甲硫氨酰人GH(hGH)预处理对GH对GHRH反应的影响。8名志愿者接受4 IU hGH或安慰剂s.c. GHRH检测前12小时持续72小时,或单次s.c. GHRH试验前12小时给予4 IU hGH。与安慰剂相比,hGH治疗后GHRH检测时的生长调节素C(Sm C)水平显著升高,GH对GHRH的反应显著减弱。另外6名受试者静脉注射2 IU hGH或安慰剂,3 h后静脉注射GHRH;两种治疗后研究5 h内Sm‐C均未升高;然而,hGH预处理完全消除了对GHRH的反应。这些结果表明,GH可以通过抑制GHRH释放以外的机制,独立于Sm‐C水平的变化调节其自身的分泌。在Sm-C水平升高的情况下对GHRH的减弱反应可能与Sm-C有关,或者是最近升高的GH水平的更直接影响。
The effect of pretreatment with biosynthetic methionyl human GH (hGH) on the GH response to GHRH has been studied in normal subjects. Eight volunteers were given either 4IU hGH or placebo s.c. 12‐hourly for 72 h before a GHRH test, or a single s.c. dose of 4 IU hGH 12 h before a GHRH test. Somatomedin‐C (Sm‐C) levels at the time of the GHRH tests were significantly elevated after treatment with hGH compared to placebo, and the GH response to GHRH was significantly attenuated. A further six subjects were given 2 IU hGH or placebo i.v., and i.v. GHRH 3 h later; there was no rise in Sm‐C for the 5 h of the study after either treatment; nevertheless, the response to GHRH was completely abolished by pretreatment with hGH. These results demonstrate that GH can regulate its own secretion independently of changes in Sm‐C levels, through a mechanism other than the inhibition of GHRH release. The attenuated response to GHRH in the presence of elevated Sm‐C levels may be related to Sm‐C, or be a more direct effect of the recently elevated GH levels.
人类血浆 GH 对 GHRH 和胰岛素诱导的低血糖的反应。
DOI: 10.1210/jcem-60-6-1265
发表时间: 1985
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影响因子: --
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期刊: The Journal of clinical investigation
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DOI: 10.1210/endo-116-5-2070
发表时间: 1985
期刊: Endocrinology
影响因子: 4.8
作者:
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外源性 GH 抑制生长激素 (GH) 对可乐定和 GH 释放激素的反应。
DOI: 10.1210/jcem-62-5-822
发表时间: 1986
期刊: The Journal of clinical endocrinology and metabolism
影响因子: --
作者:
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发表时间: 1983
期刊: The Journal of clinical endocrinology and metabolism
影响因子: --
作者:
Mendelson,WB;Jacobs,LS;Gillin,JC
通讯作者: Gillin,JC