Journal article

Diabetic heart shows preferential secretion of inner mitochondrial membrane proteins in the presence of mitochondrial oxidative stress

PM Miotto, J Bayliss, G Fidelito, JR Bell, LMD Delbridge, MJ Watt, MK Montgomery

American Journal of Physiology Endocrinology and Metabolism | Published : 2025

Abstract

Heart disease, including diabetic cardiomyopathy, is a leading cause of mortality in patients with type 2 diabetes (T2D). Defects in heart function are accompanied by marked changes in cardiac metabolism, including dysregulation of lipid and glucose metabolism, mitochondrial dysfunction, and oxidative stress. In addition to these metabolic defects, the heart is an important endocrine organ. However, although T2D has been shown to impact the secretome of liver, skeletal muscle, and adipose tissue (among others), little is known about the secretome of the heart and the influence of T2D on cardiac protein secretion. Using precision-cut heart slices from mice with insulin resistance (20-wk of hig..

View full abstract