Mitochondrial Fusion and Fission in Age-Related Cardio-Cerebral Diseases: Mechanisms and Interventions

Mitochondria play a crucial role in cellular energy metabolism. The heart and brain require a continuous and stable energy supply. Energy production strongly depends on proper mitochondrial function. Mitochondrial fusion and fission, known as “plasticity”, are vital for maintaining the normal physiological function of cells. Recent studies have shown that impaired mitochondrial dynamics are present in many aging-related diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and atherosclerotic cardio-cerebrovascular disease. The role of impaired mitochondrial dynamics in the pathophysiological process of aging-related diseases is being actively researched. We discovered that targeting proteins related to mitochondrial dynamics, especially those involved in fission and fusion, may offer new treatment strategies for these diseases. Various approaches, including aerobic interval and treadmill training and the use of drugs such as the antidiabetic agents metformin and dapagliflozin, the antihypertensive agent irbesartan, and certain traditional Chinese medicine components, have shown potential in alleviating imbalances in mitochondrial dynamics in aging-related cardio-cerebrovascular diseases. In this review, we systematically summarize recent research on alterations in mitochondrial dynamics in age-related cardio-cerebral diseases and explore therapeutic strategies targeting these alterations, which may offer new directions for improving cardiac and brain health and guiding clinical practice.