[Mitochondrial dynamics: a potential new therapeutic target for heart failure]
Jovan Kuzmicic1, Andrea Del Campo, Camila López-Crisosto
1Centro Estudios Moleculares de la Célula, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile.
Revista Espanola De Cardiologia
|August 9, 2011
Summary
Mitochondrial dynamics, involving fusion and fission, are crucial for cell function and implicated in cardiac diseases like heart failure. Understanding these changes offers potential new therapeutic targets for cardiovascular diseases.
Area of Science:
- Cell Biology
- Mitochondrial Biology
- Cardiovascular Science
Context:
- Mitochondria exhibit dynamic changes in morphology through fusion and fission.
- These dynamics are vital for cellular signaling, metabolism, and various biological processes.
- Emerging evidence links mitochondrial morphology changes to cardiac development and pathologies.
Purpose:
- To review alterations in mitochondrial dynamics in cardiac pathologies, particularly heart failure.
- To explore the potential of targeting mitochondrial dynamics for cardiovascular disease treatment.
Summary:
- Mitochondrial dynamics, regulated by fusion and fission, influence cellular functions and are increasingly recognized in cardiac health and disease.
- While studied in non-cardiac cells, mitochondrial morphology changes are now understood to play roles in cardiac development, ischemia-reperfusion injury, heart failure, and diabetes mellitus.
- This review focuses on how mitochondrial dynamics are altered in heart failure and other cardiac conditions.
Impact:
- Highlights the significance of mitochondrial dynamics in cardiovascular diseases.
- Identifies potential novel therapeutic strategies targeting mitochondrial dynamics for heart failure and other cardiovascular conditions.
Related Concept Videos
Mitochondrial Membranes
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Mitochondrial Membranes
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Heart Failure II: Pathophysiology
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Heart Failure Drugs: Inotropic Agents
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
Electron Transport Chain: Complex I and II
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
Cardiomyopathy II: Dilated Cardiomyopathy
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...


