Chronic kidney disease and acquired mitochondrial myopathy

Chronic kidney disease and acquired mitochondrial myopathy Purpose of reviewSarcopenia and muscle weakness contribute to fragility and limit exercise tolerance among patients with CKD. This review focuses on the role of reduction in mitochondrial mass and function in the myopathy associated with CKD, causes for these muscle mitochondrial abnormalities, and potential therapeutic interventions that may improve mitochondrial biogenesis and function as well as skeletal muscle function and performance in patients with CKD.Recent findingsMultiple abnormalities of mitochondrial structure, function, and composition have been shown in both experimental models and patients with CKD. A significant reduction in mitochondrial respiratory function and an increase in mitochondrial complex 1 enzyme activity has been demonstrated in the muscle tissue of male Sprague–Dawley rats following 5/6 nephrectomy. These changes were associated with a substantial reduction in skeletal muscle mitochondrial mass. In patients with CKD, in-vivo magnetic resonance and optical spectroscopy show significantly elevated resting skeletal muscle oxygen consumption and lower mean mitochondrial coupling ratio indicating disrupted muscle mitochondrial metabolism and uncoupling of oxidative phosphorylation. Skeletal muscle biopsies from patients with advanced CKD show lower mitochondrial volume density and mitochondrial DNA (mtDNA) copy number than controls.SummaryAdvanced CKD is associated with decreased exercise capacity, skeletal muscle weakness, and muscle atrophy. Impaired mitochondrial respiratory function, reduced muscle mitochondrial mass, and decreased energy production in skeletal muscle play a critical role in this ‘acquired mitochondrial myopathy’ of CKD. It is reasonable, therefore, to develop therapeutic interventions that enhance mitochondrial biogenesis and function as well as skeletal muscle function and performance in patients with CKD. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Current Opinion in Nephrology & Hypertension Wolters Kluwer Health

Chronic kidney disease and acquired mitochondrial myopathy

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Publisher
Wolters Kluwer
Copyright
Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.
ISSN
1062-4821
eISSN
1473-6543
D.O.I.
10.1097/MNH.0000000000000393
Publisher site
See Article on Publisher Site

Abstract

Purpose of reviewSarcopenia and muscle weakness contribute to fragility and limit exercise tolerance among patients with CKD. This review focuses on the role of reduction in mitochondrial mass and function in the myopathy associated with CKD, causes for these muscle mitochondrial abnormalities, and potential therapeutic interventions that may improve mitochondrial biogenesis and function as well as skeletal muscle function and performance in patients with CKD.Recent findingsMultiple abnormalities of mitochondrial structure, function, and composition have been shown in both experimental models and patients with CKD. A significant reduction in mitochondrial respiratory function and an increase in mitochondrial complex 1 enzyme activity has been demonstrated in the muscle tissue of male Sprague–Dawley rats following 5/6 nephrectomy. These changes were associated with a substantial reduction in skeletal muscle mitochondrial mass. In patients with CKD, in-vivo magnetic resonance and optical spectroscopy show significantly elevated resting skeletal muscle oxygen consumption and lower mean mitochondrial coupling ratio indicating disrupted muscle mitochondrial metabolism and uncoupling of oxidative phosphorylation. Skeletal muscle biopsies from patients with advanced CKD show lower mitochondrial volume density and mitochondrial DNA (mtDNA) copy number than controls.SummaryAdvanced CKD is associated with decreased exercise capacity, skeletal muscle weakness, and muscle atrophy. Impaired mitochondrial respiratory function, reduced muscle mitochondrial mass, and decreased energy production in skeletal muscle play a critical role in this ‘acquired mitochondrial myopathy’ of CKD. It is reasonable, therefore, to develop therapeutic interventions that enhance mitochondrial biogenesis and function as well as skeletal muscle function and performance in patients with CKD.

Journal

Current Opinion in Nephrology & HypertensionWolters Kluwer Health

Published: Mar 1, 2018

References

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