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"Take My Bone Away?" Hypoxia and bone: A narrative review
Scott S Hannah1, Sonyia McFadden2, Andrea McNeilly1
1Sport and Exercise Sciences Research Institute, Ulster University, Newtownabbey, Antrim, UK.
Journal of Cellular Physiology
|July 10, 2020
Summary
Hypoxia, or low oxygen, impacts bone health by affecting bone cells. This review explores how hypoxia influences bone metabolism, impacting both bone formation and resorption.
Area of Science:
- Bone Biology
- Cellular Physiology
- Metabolic Regulation
Background:
- Sufficient oxygen is crucial for normal cellular and physiological function.
- Hypoxia (low oxygen) is increasingly recognized for its influence on bone health.
- Bone cells exhibit distinct responses to hypoxic stimuli, with debated outcomes.
Purpose of the Study:
- To review the mechanisms by which hypoxia alters bone metabolism.
- To examine the dual effects of hypoxia on osteoblasts and osteoclasts.
- To elucidate the role of the hypoxic-inducible pathway in bone remodeling.
Main Methods:
- Literature review of studies investigating hypoxia and bone metabolism.
- Analysis of research on osteogenic-angiogenic responses to hypoxia.
- Examination of evidence regarding hypoxia-induced osteoclastic activity.
Main Results:
- Hypoxia can promote osteogenic and angiogenic responses, potentially aiding bone repair.
- Conversely, hypoxia may also lead to excessive osteoclastic bone resorption.
- The hypoxic-inducible pathway is a key mediator of these metabolic changes.
Conclusions:
- Hypoxia has complex and often opposing effects on bone metabolism.
- Understanding these mechanisms is vital for therapeutic interventions targeting bone diseases.
- Further research is needed to fully elucidate the net impact of hypoxia on bone health.
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