Related Experiment Video
Updated: Feb 4, 2026

The Use of Primary Human Fibroblasts for Monitoring Mitochondrial Phenotypes in the Field of Parkinson's Disease
Published on: October 3, 2012
Fibroblast growth factor 19 improves cardiac function and mitochondrial energy homoeostasis in the diabetic heart
Wei Xu1, Yongshun Wang1, Yibo Guo1
1Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China; The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, Heilongjiang Province, China.
Abstract:
In diabetic cardiomyopathy, mitochondrial fatty acid oxidation dominates over mitochondrial glucose oxidation, leading to metabolic disturbances. Fibroblast growth factor 19 (FGF19) acts as a metabolic regulator and may have a cardioprotective role on diabetic cardiomyopathy. In this study, we investigated the effects of FGF19 on energy metabolism. FGF19 treatment of diabetic hearts exhibited higher glucose uptake and lower lipid profiles, suggesting changes in energy metabolism. The protective effects of FGF19 prevented ventricular dysfunction in diabetic hearts and improved mitochondrial function by the upregulation of PGC-1α expression. On the other side, knockdown of PGC-1α by siRNA attenuated the effects of FGF19 on the enhancement of mitochondrial function and energy efficiency. Taken together, these results show that FGF19 exhibited improved mitochondrial efficiency, which might be associated with higher cardiac contractility in diabetic hearts. It is also of note that modulation of PGC-1α, which is responsible for the activation by FGF19, may be a therapeutic target for diabetic cardiomyopathy.
Related Concept Videos
Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Animal Mitochondrial Genetics
Cardiac Output I:Effect of Heart Rate on Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Factors Influencing Heart Rate
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Cardiac Catheterization II: Right Heart Catheterization
Role of Hematopoietic Growth Factors
Thrombopoietin (TPO), mainly released by the liver,...

