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Mitochondria-Targeted Antioxidants for the Treatment of Cardiovascular Disorders
Hyoung Kyu Kim1,2, Jin Han3
1National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Bokji-ro 75, Busanjin-gu, Busan, 47392, Korea.
Insights
Mitochondria produce reactive species causing heart disease. Antioxidant therapies targeting mitochondria are being explored to treat cardiovascular disorders and improve heart function.
Area of Science:
- Cardiology
- Mitochondrial Biology
- Biochemistry
Background:
- Mitochondria are vital for heart energy production via ATP synthesis.
- Mitochondrial byproducts, reactive oxygen species, can cause cardiac dysfunction and cell death.
- Cardiovascular diseases are linked to mitochondrial dysfunction and oxidative stress.
Purpose of the Study:
- To review clinical trials of antioxidant therapies for cardiovascular diseases.
- To discuss the current status of mitochondria-targeted antioxidants.
- To explore future antioxidant molecules for cardiac conditions.
Main Methods:
- Review of clinical trial data on antioxidant therapies.
- Analysis of studies on mitochondria-targeted antioxidants.
- Literature search for novel antioxidant candidates.
Main Results:
- Clinical trials for general antioxidants have shown limited success.
- Mitochondria-targeted antioxidants show promise in preclinical studies.
- Several novel antioxidant compounds are under investigation.
Conclusions:
- Targeting mitochondria with antioxidants is a promising strategy for cardiovascular disease.
- Further research and clinical trials are needed for effective antioxidant therapies.
- Developing specific mitochondria-targeted antioxidants could offer new treatment options.
Abstract:
The heart continuously supplies blood to the entire body throughout the lifetime, requiring a huge amount of the bioenergy molecule adenosine triphosphate (ATP). As the major subcellular organs that produce ATP through oxidative phosphorylation and the citrate-synthesis cycle, mitochondria inevitably produce chemically reactive species as byproducts. Those species are known to be major effectors of mitochondrial dysfunction, many of which are involved in various cardiovascular diseases, causing apoptotic/necrotic loss of cardiac myocytes and/or defects in the energy balance within the myocardium. In this context, researchers have aimed to develop effective antioxidant therapies to treat cardiovascular disorders. This chapter presents an overview of the clinical trials related to antioxidant therapy and discusses the current clinical status of mitochondria-targeted antioxidants and potential future candidate molecules.
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