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Empagliflozin, a sodium glucose co-transporter-2 inhibitor, alleviates atrial remodeling and improves mitochondrial function in high-fat diet/streptozotocin-induced diabetic rats.
Cardiovascular Diabetology ( IF 8.5 ) Pub Date : 2019-11-28 , DOI: 10.1186/s12933-019-0964-4
Qingmiao Shao 1 , Lei Meng 1 , Sharen Lee 2 , Gary Tse 1 , Mengqi Gong 1 , Zhiwei Zhang 1 , Jichao Zhao 3 , Yungang Zhao 4 , Guangping Li 1 , Tong Liu 1
Affiliation  

BACKGROUND Diabetes mellitus is an important risk factor for atrial fibrillation (AF) development. Sodium-glucose co-transporter-2 (SGLT-2) inhibitors are used for the treatment of type 2 diabetes mellitus (T2DM). Their cardioprotective effects have been reported but whether they prevent AF in T2DM patients are less well-explored. We tested the hypothesis that the SGLT-2 inhibitor, empagliflozin, can prevent atrial remodeling in a diabetic rat model. METHODS High-fat diet and low-dose streptozotocin (STZ) treatment were used to induce T2DM. A total of 96 rats were randomized into the following four groups: (i) control (ii) T2DM, (iii) low-dose empagliflozin (10 mg/kg/day)/T2DM; and (iv) high-dose empagliflozin (30 mg/kg/day)/T2DM by the intragastric route for 8 weeks. RESULTS Compared with the control group, left atrial diameter, interstitial fibrosis and the incidence of AF inducibility were significantly increased in the DM group. Moreover, atrial mitochondrial respiratory function, mitochondrial membrane potential, and mitochondrial biogenesis were impaired. Empagliflozin treatment significantly prevented the development of these abnormalities in DM rats, likely via the peroxisome proliferator-activated receptor-c coactivator 1α (PGC-1α)/nuclear respiratory factor-1 (NRF-1)/mitochondrial transcription factor A (Tfam) signaling pathway. CONCLUSIONS Empagliflozin can ameliorate atrial structural and electrical remodeling as well as improve mitochondrial function and mitochondrial biogenesis in T2DM, hence may be potentially used in the prevention of T2DM-related atrial fibrillation.

中文翻译:

Empagliflozin是一种钠葡萄糖共转运蛋白2抑制剂,可减轻高脂饮食/链脲佐菌素诱发的糖尿病大鼠的心房重构,并改善线粒体功能。

背景技术糖尿病是心房颤动(AF)发展的重要危险因素。葡萄糖钠转运蛋白2(SGLT-2)抑制剂用于治疗2型糖尿病(T2DM)。已经报道了它们的心脏保护作用,但是它们是否能预防T2DM患者的房颤尚未得到很好的研究。我们测试了以下假设:SGLT-2抑制剂依帕格列净可以预防糖尿病大鼠模型中的心房重构。方法采用高脂饮食和低剂量链脲佐菌素(STZ)诱导T2DM。总共96只大鼠随机分为以下四组:(i)对照(ii)T2DM,(iii)小剂量依帕列净(10 mg / kg / day)/ T2DM;(iv)大剂量恩帕格列净(30 mg / kg /天)/ T2DM通过胃内途径治疗8周。结果与对照组相比,左心房直径,糖尿病组间质纤维化和房颤诱发的发生率显着增加。此外,心房线粒体呼吸功能,线粒体膜电位和线粒体生物发生受到损害。Empagliflozin治疗可能通过过氧化物酶体增殖物激活的受体-c共激活子1α(PGC-1α)/核呼吸因子-1(NRF-1)/线粒体转录因子A(Tfam)信号转导显着阻止了DM大鼠中这些异常的发展。途径。结论Empagliflozin可以改善T2DM的心房结构和电重构,并改善线粒体功能和线粒体的生物发生,因此可能在预防T2DM相关的心房纤颤方面具有潜在的用途。此外,心房线粒体呼吸功能,线粒体膜电位和线粒体生物发生受到损害。Empagliflozin治疗可能通过过氧化物酶体增殖物激活的受体-c共激活子1α(PGC-1α)/核呼吸因子-1(NRF-1)/线粒体转录因子A(Tfam)信号转导显着阻止了DM大鼠中这些异常的发展。途径。结论Empagliflozin可以改善T2DM的心房结构和电重构,并改善线粒体功能和线粒体的生物发生,因此可能在预防T2DM相关的心房纤颤方面具有潜在的用途。此外,心房线粒体呼吸功能,线粒体膜电位和线粒体生物发生受到损害。Empagliflozin治疗可能通过过氧化物酶体增殖物激活的受体-c共激活子1α(PGC-1α)/核呼吸因子-1(NRF-1)/线粒体转录因子A(Tfam)信号转导显着阻止了DM大鼠中这些异常的发展。途径。结论Empagliflozin可以改善T2DM的心房结构和电重构,并改善线粒体功能和线粒体的生物发生,因此可能在预防T2DM相关的心房纤颤方面具有潜在的用途。Empagliflozin治疗可能通过过氧化物酶体增殖物激活的受体-c共激活子1α(PGC-1α)/核呼吸因子-1(NRF-1)/线粒体转录因子A(Tfam)信号转导显着阻止了DM大鼠中这些异常的发展。途径。结论Empagliflozin可以改善T2DM的心房结构和电重构,并改善线粒体功能和线粒体的生物发生,因此可能在预防T2DM相关的心房纤颤方面具有潜在的用途。Empagliflozin治疗可能通过过氧化物酶体增殖物激活的受体-c共激活子1α(PGC-1α)/核呼吸因子-1(NRF-1)/线粒体转录因子A(Tfam)信号转导显着阻止了DM大鼠中这些异常的发展。途径。结论Empagliflozin可以改善T2DM的心房结构和电重构,并改善线粒体功能和线粒体的生物发生,因此可能在预防T2DM相关的心房纤颤方面具有潜在的用途。
更新日期:2019-11-28
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