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异位脂质堆积:代谢紊乱的潜在原因,也是肾功能改变的促成因素。

Ectopic lipid accumulation: A potential cause for metabolic disturbances and a contributor to the alteration of kidney function.

机构信息

Université de Lyon, INSERM U1060, CarMeN, INSA de Lyon, Univ Lyon-1, F-69621 Villeurbanne, France; Hospices Civils de Lyon, Department of Nephrology, Hôpital E Herriot, Lyon F-69003, France.

出版信息

Biochimie. 2013 Nov;95(11):1971-9. doi: 10.1016/j.biochi.2013.07.017. Epub 2013 Jul 27.


DOI:10.1016/j.biochi.2013.07.017
PMID:23896376
Abstract

Ectopic lipid accumulation is now known to be a mechanism that contributes to organ injury in the context of metabolic diseases. In muscle and liver, accumulation of lipids impairs insulin signaling. This hypothesis accounts for the mechanism of insulin resistance in obesity, type 2 diabetes, aging and lipodystrophy. Increasing data suggest that lipid accumulation in the kidneys could also contribute to the alteration of kidney function in the context of metabolic syndrome and obesity. Furthermore and more unexpectedly, animal models of kidney disease exhibit a decreased adiposity and ectopic lipid redistribution suggesting that kidney disease may be a state of lipodystrophy. However, whether this abnormal lipid partitioning during chronic kidney disease (CKD) may have any functional impact in these tissues needs to be investigated. Here, we provide a perspective by defining the problem and analyzing the possible causes and consequences. Further human studies are required to strengthen these observations, and provide novel therapeutic approaches.

摘要

异位脂质积累现在被认为是代谢性疾病导致器官损伤的一种机制。在肌肉和肝脏中,脂质的积累会损害胰岛素信号。这一假说解释了肥胖、2 型糖尿病、衰老和脂肪营养不良中胰岛素抵抗的机制。越来越多的证据表明,肾脏中的脂质积累也可能导致代谢综合征和肥胖患者肾功能的改变。此外,更令人意外的是,肾脏疾病的动物模型表现出脂肪减少和异位脂质再分布,这表明肾脏疾病可能是脂肪营养不良的一种状态。然而,在慢性肾脏病(CKD)期间这种异常的脂质分配是否会对这些组织产生任何功能影响,还需要进一步研究。在这里,我们通过定义问题、分析可能的原因和后果来提供一个视角。需要进一步的人类研究来加强这些观察结果,并提供新的治疗方法。

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