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
复制
发表时间:
1997
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
通讯作者:
R. Eckel
R. Eckel
中科院分区:
--
文献类型:
--
作者:
W. Donahoo;D. Jensen;T. Yost;R. Eckel

文献摘要

参考文献

被引文献

相似文献

在培养的脂肪细胞中,胰岛素会增加瘦素,cAMP 会减少瘦素。在动物模型中,胰岛素和增加细胞内 cAMP 的药物已被证明对体内血浆瘦素有类似的影响。这项研究的目的是检验以下假设:在人类中,异丙肾上腺素诱导的 cAMP 增加会减少瘦素。对五组正常体重的受试者进行了研究; 1) 受试者以 24 ng/kg/min (ISO24) 的速度输注异丙肾上腺素; 2) 受试者以 8 ng/kg/min (ISO8) 的速度输注异丙肾上腺素; 3) 受试者输注生长抑素/胰岛素/GH,然后混输 8 ng/kg/min 异丙肾上腺素 (ISO8 + SRIH); 4)单独输注生长抑素/胰岛素/GH的受试者(SRIH); 5)对照受试者注射生理盐水(NS)。 ISO24 输注导致血浆瘦素在 120 分钟内下降 27%。 ISO24 还可以在输注过程中增加血浆胰岛素。 ISO8 导致瘦素减少 16%。盐水不会改变瘦素。单独使用 SRIH 组在前 120 分钟内瘦素降低了 19%,但 SRIH 组在接下来的 120 分钟内瘦素没有进一步下降。尽管如此,在第二个 120 分钟内添加 8 ng/kg/min ISO (ISO8 + SRIH) 导致血浆瘦素进一步下降 15%。因此,异丙肾上腺素和生长抑素都会降低人类血浆瘦素。异丙肾上腺素的作用可能是由β-肾上腺素能受体介导的,而生长抑素的作用表明瘦素调节的新机制。
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.
正常体重人群中异丙肾上腺素对脂蛋白脂肪酶的组织特异性调节。
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
DOI: 10.1126/science.7624777
发表时间: 1995-07-28
期刊: SCIENCE
影响因子: 56.9
作者:
HALAAS, JL;GAJIWALA, KS;FRIEDMAN, JM
通讯作者: FRIEDMAN, JM
急性高血糖和高胰岛素血症对血浆瘦素水平的影响:其与身体脂肪、内脏肥胖和女性年龄的关系。
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
大鼠脂肪组织中 ob mRNA 响应胰岛素的差异表达。
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
DOI: 10.2337/diabetes.45.7.909
发表时间: 1996-07-01
期刊: DIABETES
影响因子: 7.7
作者:
Mantzoros, CS;Qu, DQ;Flier, JS
通讯作者: Flier, JS