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首页> 外文期刊>The Canadian journal of cardiology >Abnormal Myocardial Dietary Fatty Acid Metabolism and Diabetic Cardiomyopathy
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Abnormal Myocardial Dietary Fatty Acid Metabolism and Diabetic Cardiomyopathy

机译:异常心肌膳食脂肪酸代谢和糖尿病心肌病

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Patients with diabetes are at very high risk of hospitalization and death from heart failure. Increased prevalence of coronary heart disease, hypertension, autonomic neuropathy, and kidney failure all play a role in this increased risk. However, cardiac metabolic abnormalities are now recognized to play a role in this increased risk. Increased reliance on fatty acids to produce energy might predispose the diabetic heart to oxidative stress and ischemic damage. Intramyocellular accumulation of toxic lipid metabolites leads to a number of cellular abnormalities that might also contribute to cardiac remodelling and cardiac dysfunction. However, fatty acid availability from circulation and from intracellular lipid droplets to fuel the heart is critical to maintain its function. Fatty acids delivery to the heart is very complex and includes plasma nonesterified fatty acid flux as well as triglyceride- rich lipoproten-in- mediated transport. Although many studies have shown a cross-sectional association between enhanced fatty acid delivery to the heart and reduction in left ventricular function in subjects with prediabetes and diabetes, these mechanisms change very rapidly during type 2 diabetes treatment. The present review focuses on the role of fatty acids in cardiac function, with particular emphasis on the possible role of early abnormalities of dietary fatty acid metabolism in the development of diabetic cardiomyopathy.
机译:患有糖尿病的患者在心力衰竭中处于住院和死亡的风险非常高。冠心病的患病率增加,高血压,自主神经病变,肾功能衰竭都在这种增加的风险中发挥作用。然而,现在认识到心脏代谢异常在这种情况下发挥作用。增加对脂肪酸产生能量的依赖可能会使糖尿病心脏促使氧化应激和缺血性损伤。肿瘤脂质代谢物的脑内肿瘤积累导致许多细胞异常,其也可能有助于心脏重塑和心脏功能障碍。然而,从循环和细胞内脂液滴到燃料的脂肪酸可用性对于维持其功能至关重要。向心脏递送的脂肪酸非常复杂,包括血浆硝酸化脂肪酸通量以及富甘油三酯 - 富含脂质丙醇的介导的转运。尽管许多研究表明,增强脂肪酸输送到心脏的横截面关联,但在患有前奶油和糖尿病的受试者中的左心室功能的左心室功能之间的横截面关联,这些机制在2型糖尿病治疗过程中变化非常迅速。本综述致力于脂肪酸在心脏功能中的作用,特别强调膳食脂肪酸代谢早期异常在糖尿病心肌病发展中的发挥作用。

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