Researchers Investigate a Muscle Protein Linked to Insulin Resistance in Type 2 Diabetes

Insulin resistance occurs when cells respond less effectively to insulin, making it harder for the body to move glucose from the bloodstream into tissues. Skeletal muscle is particularly important because it accounts for a substantial portion of the body's glucose use after meals.

The study investigated Miro1, a protein found at elevated levels in skeletal muscle from people with type 2 diabetes. Researchers reported that removing the protein restored aspects of insulin responsiveness in experimental models. They also observed lower Miro1 levels after aerobic exercise in participants with obesity and type 2 diabetes, alongside improved insulin sensitivity.

These findings provide a possible explanation for some of the metabolic benefits of exercise and may help identify future therapeutic targets. They do not mean that a Miro1-targeting medicine is available or that exercise alone cures diabetes.

People with diabetes should continue their prescribed medicines, appropriate nutrition and activity plans, and regular monitoring. Those using insulin or other medicines that can cause low blood sugar should ask their healthcare team how to exercise safely.