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Abstract Title:

Effect of alpha linolenic acid on membrane fluidity and respiration of liver mitochondria in normoglycemic and diabetic Wistar rats.

Abstract Source:

J Bioenerg Biomembr. 2020 Nov 6. Epub 2020 Nov 6. PMID: 33156468

Abstract Author(s):

Ricardo Mejía-Zepeda, Ismael Herminio Pérez-Hernández

Article Affiliation:

Ricardo Mejía-Zepeda

Abstract:

The omega 3 fatty acids (ω3FA) have been recommended for the treatment of Type 2 Diabetes Mellitus (T2DM) and its complications, but there are studies questioning those beneficial effects. In this research, we supplemented the short-chain ω3FA, alpha-linolenic acid (ALA), to a model of rats with T2DM and normoglycemic controls, for 5 months. We were mainly interested in studying the effects of diabetes and ALA on the physicochemical properties of mitochondrial membranes and the consequences on mitochondrial respiration. We found that the Respiratory Control (RC) of diabetic rats was 46% lower than in control rats;in diabetic rats with ALA supplement, it was only 23.9% lower, but in control rats with ALA supplement, the RC was 29.5% higher, apparently improving. Diabetes also decreased the membrane fluidity, changed the thermotropic characteristics of membranes, and increased the proportion of saturated fattyacids. ALA supplement partially kept regulated the physicochemical properties of mitochondrial membranes in induced rats. Our data indicate that diabetes decreased the membrane fluidity through changes in the fatty acids composition that simultaneously affected the RC, which means that the mitochondrial respiration is highly dependent on the physicochemical properties of the membranes. Simultaneously, it was followed the effects of ALA on the progress of diabetes and we found also that the supplementation of ALA helped in controlling glycaemia in rats induced to T2DM; however, in control non-induced rats, the supplementation of ALA derived in characteristics of initial development of diabetes.

Study Type : Animal Study

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