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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Stanniocalcin-1 and-2 effects on glucose and lipid metabolism in white adipose tissue from fed and fasted rats
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Stanniocalcin-1 and-2 effects on glucose and lipid metabolism in white adipose tissue from fed and fasted rats

机译:桑烯酸-1和-2对来自美联储和禁食大鼠的白色脂肪组织中葡萄糖和脂质代谢的影响

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摘要

Stanniocalcin-1 and -2 belong to a family of molecules that exhibit both paracrine and autocrine effects in mammalian cells. Human stanniocalcin-1 (hSTC-1) is expressed in a wide range of tissues, including white adipose tissue. In fed rats, hSTC-1 increases carbon flux from glucose to lipids in retroperitoneal white adipose tissue. Human stanniocalcin-2 (hSTC-2) is expressed in almost all tissues and regulates various biological processes. The aim of this work was to study the action of hSTC-1 and hSTC-2 in the lipid and glucose metabolism of epididymal white adipose tissue (eWAT) in rats in different nutritional states. This study shows for the first time an opposite effect of hSTC-1 and hSTC-2 on glyceride-glycerol generation from glucose in eWAT of fed rats. hSTC-1 stimulated the storage of triacylglycerol in eWAT in the postprandial period, increasing glucose uptake and glyceride-glycerol generation from C-14-glucose. hSTC-2 decreased triacylglycerol synthesis, reducing glyceride-glycerol generation from C-14-glucose, direct phosphorylation of glycerol, and fatty acid synthesis from C-14-glucose in eWAT of fed rats. However, both hormones increased glucose uptake in fed and fasting states. These findings provide evidence for a direct role of hSTC-1 and hSTC-2 in the regulation of lipid and glucose metabolism in eWAT of rats.
机译:斯坦霉素-1和-2属于哺乳动物细胞中具有旁静脉和自分泌作用的一系列分子。人辛甘油酰-1(HSTC-1)在各种组织中表达,包括白色脂肪组织。在喂养大鼠中,HSTC-1将碳通量从腹膜脂肪组织中的血糖增加给脂质。人类辛甘油蛋白-2(HSTC-2)几乎在所有组织中表达并调节各种生物过程。这项工作的目的是研究HSTC-1和HSTC-2在不同营养状态的大鼠中的附睾白色脂肪组织(EWAT)的脂质和葡萄糖代谢中的作用。本研究表明,首次显示HSTC-1和HSTC-2对喂养大鼠EWAT中葡萄糖甘油 - 甘油的相反效果。 HSTC-1刺激了在餐后期间eWAT中三酰基甘油的储存,增加了葡萄糖摄取和甘油酯 - 甘油从C-14-葡萄糖产生。 HSTC-2降低了三酰基甘油合成,减少了从C-14-葡萄糖,直接磷酸化的甘油酯 - 甘油,甘油直接磷酸化,以及喂养大鼠EWAT中的C-14-葡萄糖合成。然而,两种激素都会增加喂养和禁食状态的葡萄糖摄取。这些发现提供了在大鼠EWAT中对脂质和葡萄糖代谢的调节中HSTC-1和HSTC-2的直接作用的证据。

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