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Diabetes:肥胖相关的胰岛素抵抗与ScAT炎症相联系可为心脏病的预防提供线索

2020-11-09 MedSci原创 MedSci原创

肥胖相关的胰岛素抵抗(IR)可能会在多个器官中发展,代表了心脏代谢疾病的各种病因。

肥胖相关的胰岛素抵抗(IR)可能会在多个器官中发展,代表了心脏代谢疾病的各种病因。
研究人员通过对饮食、肥胖和基因(DiOGenes)(NCT00390637,ClinicalTrials.gov)队列(n = 368)的超重或肥胖参与者进行RNA测序,确定了肝脏或肌肉IR中的腹部皮下脂肪组织(ScAT)转录组谱。组织特异性IR表型来自于5点口服葡萄糖耐量试验。肝脏和肌肉IR由不同的腹部ScAT转录组图谱表征。
 
结果显示,与细胞外重塑相关的基因在以肝脏IR为主的个体中上调,而与炎症相关的基因在以肌肉IR为主的个体中上调。与此相一致,在两个独立的队列中,糖尿病和动脉粥样硬化马斯特里赫特队列(CODAM)(n = 325)和马斯特里赫特研究(n = 685),系统性低级炎症的增加与肌肉IR特别相关,但与肝脏IR无关。
研究认为,ScAT炎症基因表达的增加可能转化为系统性炎症概况的增加,将ScAT炎症与肌肉IR表型联系起来。这些不同的IR表型可能为更加个性化的预防心脏代谢疾病提供线索。
 
原始出处:
 
Birgitta W van der Kolk, Marianthi Kalafati, et al., Subcutaneous Adipose Tissue and Systemic Inflammation Are Associated With Peripheral but Not Hepatic Insulin Resistance in Humans. Diabetes. 2019 Dec;68(12):2247-2258. doi: 10.2337/db19-0560.  Epub 2019 Sep 6.

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