Isoproterenol and somatostatin decrease plasma leptin in humans: a novel mechanism regulating leptin secretion.
Isoproterenol and somatostatin decrease plasma leptin in humans: a novel mechanism regulating leptin secretion.
复制标题
异丙肾上腺素和生长抑素降低人体血浆瘦素:调节瘦素分泌的新机制。
DOI:
10.1210/jcem.82.12.4434
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
R. Eckel
中科院分区:
文献类型:
--
作者:
W. Donahoo;D. Jensen;T. Yost;R. Eckel
In cultured adipocytes, leptin is increased by insulin and decreased by cAMP. In animal models, insulin and agents that increase intracellular cAMP have been shown to similarly affect plasma leptin in vivo. This study was undertaken to test the hypothesis that in humans increased cAMP induced by isoproterenol would decrease leptin. Five groups of normal weight subjects were studied; 1) subjects infused with isoproterenol at a rate of 24 ng/kg/min (ISO24); 2) subjects infused with isoproterenol at a rate of 8 ng/kg/min (ISO8); 3) subjects infused with somatostatin/insulin/GH followed by coinfusion with 8 ng/kg/min isoproterenol (ISO8 + SRIH); 4) subjects infused with somatostatin/insulin/GH alone (SRIH); and 5) control subjects infused with saline (NS). ISO24 infusion resulted in a 27% decrease in plasma leptin over 120 min. ISO24 also increased plasma insulin over the infusion. ISO8 resulted in a 16% decrease in leptin. Saline did not change leptin. SRIH alone decreased leptin 19% over the first 120 min, however no additional fall was seen over the next 120 min the SRIH group. Nonetheless, the addition of 8 ng/kg/min ISO during the second 120 min (ISO8 + SRIH) caused a 15% further decline in plasma leptin. Therefore both isoproterenol and somatostatin reduce plasma leptin in humans. The effect of isoproterenol is likely mediated by beta-adrenergic receptors, whereas the effect of somatostatin suggests a novel mechanism for the regulation of leptin.
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DOI:
10.1152/ajpregu.1996.271.5.r1280
发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
作者:
Eckel,RH;Jensen,DR;Schlaepfer,IR;Yost,TJ
通讯作者:
Yost,TJ
影响因子:
56.9
作者:
HALAAS, JL;GAJIWALA, KS;FRIEDMAN, JM
通讯作者:
FRIEDMAN, JM
DOI:
10.1210/jcem.81.12.8954055
发表时间:
1996
期刊:
The Journal of clinical endocrinology and metabolism.
影响因子:
--
作者:
Ryan,AS;Elahi,D
通讯作者:
Elahi,D
DOI:
10.1006/bbrc.1996.0077
发表时间:
1996
期刊:
Biochemical and biophysical research communications.
影响因子:
--
作者:
Zheng,D;Jones,JP;Usala,SJ;Dohm,GL
通讯作者:
Dohm,GL
影响因子:
7.7
作者:
Mantzoros, CS;Qu, DQ;Flier, JS
通讯作者:
Flier, JS