Regulation of the leptin content of obese human adipose tissue.

Regulation of the leptin content of obese human adipose tissue.
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肥胖人体脂肪组织瘦素含量的调节。

DOI:
10.1152/ajpendo.2001.280.3.e399
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发表时间:
2001
期刊:
American journal of physiology. Endocrinology and metabolism.
影响因子:
--
通讯作者:
Fried,SK
Fried,SK
中科院分区:
--
文献类型:
--
作者:
Russell,CD;Ricci,MR;Brolin,RE;Magill,E;Fried,SK

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本研究的目的是确定肥胖的人脂肪组织是否含有预先储存的瘦素及其与分泌的瘦素的关系。洗涤剂使可检测到的瘦素增加约两倍,表明瘦素储存在膜结合位置。皮下组织瘦素是网膜组织瘦素的1.6倍,与已知的瘦素分泌和表达差异相平行。在3小时孵育期间分泌的瘦素的量与可提取的组织瘦素的量相似。在孵育期间维持组织瘦素水平。抑制蛋白质合成降低组织瘦素含量,但没有减少瘦素分泌,直到3小时后的孵育。培养脂肪组织2天的胰岛素和地塞米松的组合,但不是单独使用任何激素,增加组织瘦素含量约两倍,在两个仓库。尽管胰岛素不影响组织瘦素含量,但它增强了瘦素分泌(占组织储存的百分比)。这些数据表明,脂肪组织瘦素的储存和分泌本身受到调节。调节预先形成的瘦素的释放可以调节肥胖人的血清瘦素水平。
The objective of this study was to determine whether obese human adipose tissue contains preformed stores of leptin and their relationship to secreted leptin. Detergent increased detectable leptin by about twofold, suggesting that leptin is stored in a membrane-bound location. Subcutaneous tissue leptin was ∼1.6-fold higher than omental, paralleling known differences in leptin secretion and expression. The amount of leptin secreted during a 3-h incubation was similar to that of extractable tissue leptin. Tissue leptin levels were maintained over the incubation. Inhibition of protein synthesis decreased tissue leptin content but did not decrease leptin secretion until after 3 h of incubation. Culture of adipose tissue for 2 days with the combination of insulin and dexamethasone, but not with either hormone alone, increased tissue leptin content about twofold in both depots. Although insulin did not affect tissue leptin content, it potentiated leptin secretion (as a % of tissue stores). These data suggest that adipose tissue leptin storage and secretion per se are regulated. Regulation of the release of preformed leptin may modulate serum leptin levels in obese humans.
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。
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Journal of Clinical Endocrinology and Metabolism 美国印刷版权所有 © 1998 内分泌学会 培养人内脏脂肪组织中 ob 基因表达和瘦素分泌的多激素控制:增加对糖皮质激素的反应
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DOI: --
发表时间: 1988
期刊: Biochemical and Biophysical Research Communications - BBRC
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发表时间: 1997-03-01
期刊: DIABETES
影响因子: 7.7
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