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Melatonin Accelerates Osteoporotic Bone Defect Repair by Promoting Osteogenesis-Angiogenesis Coupling
Sheng Zheng1, Chunhao Zhou2, Han Yang1
1School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.
Frontiers in Endocrinology
|March 11, 2022
Summary
Melatonin promotes bone healing by enhancing bone formation and blood vessel growth in osteoporotic bone defects. This study shows melatonin’s potential for treating osteoporosis-related bone injuries.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Endocrinology
Background:
- Melatonin's role in anti-osteoporosis and osteogenesis is known.
- The precise effects of melatonin on osteoporotic bone defects and its mechanism in angiogenesis remain unclear.
Purpose of the Study:
- To investigate the effects of melatonin on angiogenesis and osteoporotic bone defect.
- To elucidate the mechanism of melatonin's action on angiogenesis.
Main Methods:
- Isolated rat bone marrow mesenchymal stem cells (BMSCs) to assess osteogenic and angiogenic potentials in vitro.
- Established an osteoporotic tibia defect model in ovariectomized (OVX) rats and treated with melatonin.
- Analyzed bone repair using micro-CT, histology, fluorescent labeling, and biomechanical testing.
Main Results:
- Melatonin promoted osteogenesis and angiogenesis in vitro, upregulating key markers like VEGF.
- Melatonin treatment accelerated bone defect repair in OVX rats, increasing bone mineralization, formation, and strength.
- Melatonin enhanced BMSC-mediated angiogenesis and osteogenesis-angiogenesis coupling.
Conclusions:
- Melatonin promotes osteoporotic bone repair by enhancing both osteogenesis and angiogenesis.
- Melatonin facilitates BMSC-mediated angiogenesis through VEGF upregulation.
- Findings support melatonin's potential therapeutic application for osteoporotic bone defects.
Keywords:
bone defect repairbone marrow mesenchymal stem cellsmelatoninosteogenesis–angiogenesis couplingosteoporosisMore Related Videos
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