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Osteocalcin as a hormone regulating glucose metabolism
1Ippei Kanazawa, Department of Internal Medicine 1, Shimane University Faculty of Medicine, Shimane 693-8501, Japan.
World Journal of Diabetes
|January 2, 2016
Summary
Osteocalcin, a bone-derived hormone, plays a crucial role in regulating glucose and bone metabolism. This review explores its function in the interplay between bone, pancreas, adipose tissue, and muscle.
Area of Science:
- Endocrinology
- Metabolic Science
- Bone Biology
Background:
- Increasing global prevalence of osteoporosis and diabetes.
- Emerging understanding of bone as an endocrine organ.
- Osteocalcin secreted by osteoblasts influences glucose homeostasis.
Purpose of the Study:
- To review the role of osteocalcin in the interaction between bone, pancreas, brain, adipose tissue, and muscle.
- To elucidate the bidirectional communication pathways regulating bone and glucose metabolism.
Main Methods:
- Literature review of recent studies on osteocalcin.
- Analysis of molecular mechanisms linking bone and glucose metabolism.
- Exploration of feedforward loops between tissues.
Main Results:
- Osteocalcin enhances insulin and adiponectin expression, improving glucose intolerance.
- Insulin and adiponectin stimulate osteocalcin production, forming positive feedback loops.
- Osteocalcin improves insulin sensitivity and muscle differentiation; myokines influence bone metabolism.
Conclusions:
- Bone and glucose metabolism are intricately linked via osteocalcin.
- Osteocalcin acts as a key mediator in the bone-adipose-pancreas-muscle axis.
- Understanding these interactions is vital for managing metabolic and bone diseases.
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