Mitochondrial DNA Copy Number, Metabolic Syndrome, and Insulin Sensitivity: Insights from the Sugar, Hypertension, and Physical Exercise Studies

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2022 Jul 18

PMID 35849594

Authors

Stephanie Y Yang

Caleb S Mirabal

Charles E Newcomb

Kerry J Stewart

Dan E Arking

Affiliations

Soon will be listed here.

Abstract

Mitochondrial DNA copy number (mtDNA-CN) measured in blood has been associated with many aging-related diseases, with higher mtDNA-CN typically associated with lower disease risk. Exercise training is an excellent preventative tool against aging-related disorders and has been shown to increase mitochondrial function in muscle. Using the Sugar, Hypertension, and Physical Exercise cohorts (N = 105), we evaluated the effect of 6-months of exercise intervention on mtDNA-CN measured in blood. Although there was no significant relationship between exercise intervention and mtDNA-CN change (P = 0.29), there was a nominally significant association between mtDNA-CN and metabolic syndrome (P = 0.04), which has been seen in previous literature. We also identified a nominally significant association between higher mtDNA-CN and higher insulin sensitivity (P = 0.02).

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