The effects of vertical sleeve gastrectomy in rodents are ghrelin independent.

The effects of vertical sleeve gastrectomy in rodents are ghrelin independent.
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DOI:
10.1053/j.gastro.2012.09.009
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发表时间:
2013-01
期刊:
影响因子:
29.4
通讯作者:
Seeley RJ
Seeley RJ
中科院分区:
医学1区
文献类型:
--
作者:
Chambers AP;Kirchner H;Wilson-Perez HE;Willency JA;Hale JE;Gaylinn BD;Thorner MO;Pfluger PT;Gutierrez JA;Tschöp MH;Sandoval DA;Seeley RJ

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有人提出,降低饥饿刺激激素胃饥饿素的水平可以调节垂直袖状胃切除术(VSG)和Roux-en-Y胃绕道手术对肥胖症的部分影响。我们研究了这些手术后大鼠中酰基和去酰基生长素释放肽的循环水平。根据酶联免疫吸附测定和质谱分析,我们发现 VSG 后血液中的生长素释放肽水平降低,但在 Roux-en-Y 胃绕道手术后并未降低。我们比较了 Ghrelin 缺陷小鼠和野生型小鼠中 VSG 对食物摄入、体重、膳食脂肪偏好和葡萄糖耐量的影响。我们发现 VSG 在每种菌株中产生了类似的结果。因此,VSG 的这些作用似乎不需要减少 ghrelin 信号传导。
Reductions in levels of the hunger-stimulating hormone ghrelin have been proposed to mediate part of the effects of vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass surgeries for obesity. We studied circulating levels of acyl and desacyl ghrelin in rats after these surgeries. We found that blood levels of ghrelin were reduced after VSG, but not after Roux-en-Y gastric bypass, based on enzyme-linked immunosorbent assay and mass-spectrometry analyses. We compared the effects of VSG in ghrelin-deficient mice and wild-type mice on food intake, body weight, dietary fat preference, and glucose tolerance. We found that VSG produced comparable outcomes in each strain. Reduced ghrelin signaling therefore does not appear to be required for these effects of VSG.
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发表时间: 2001-12-01
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