Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/ijms23094571
Keywords
mitochondria; fission; fusion; ultrastructure; heart; bone; hypoxia; inflammation
Funding
- University of Regensburg
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Mitochondria have a crucial role in cell physiology and pathophysiology. The dynamics of mitochondria, especially fission and fusion, have been extensively studied in energy-dependent tissues like the heart, liver, and brain. However, there is limited research on mitochondrial dynamics in the orthopedic or trauma fields. This paper summarizes the current knowledge on mitochondrial dynamics in the cardiovascular system and compares it to the musculoskeletal system. It also highlights the potential link between hypoxia-induced mitochondrial fission and inflammatory bone diseases.
Mitochondria play a crucial role in cell physiology and pathophysiology. In this context, mitochondrial dynamics and, subsequently, mitochondrial ultrastructure have increasingly become hot topics in modern research, with a focus on mitochondrial fission and fusion. Thus, the dynamics of mitochondria in several diseases have been intensively investigated, especially with a view to developing new promising treatment options. However, the majority of recent studies are performed in highly energy-dependent tissues, such as cardiac, hepatic, and neuronal tissues. In contrast, publications on mitochondrial dynamics from the orthopedic or trauma fields are quite rare, even if there are common cellular mechanisms in cardiovascular and bone tissue, especially regarding bone infection. The present report summarizes the spectrum of mitochondrial alterations in the cardiovascular system and compares it to the state of knowledge in the musculoskeletal system. The present paper summarizes recent knowledge regarding mitochondrial dynamics and gives a short, but not exhaustive, overview of its regulation via fission and fusion. Furthermore, the article highlights hypoxia and its accompanying increased mitochondrial fission as a possible link between cardiac ischemia and inflammatory diseases of the bone, such as osteomyelitis. This opens new innovative perspectives not only for the understanding of cellular pathomechanisms in osteomyelitis but also for potential new treatment options.
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