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An overview of the endocrine functions of osteocalcin

International Journal of Oral Biology 2019년 44권 4호 p.125 ~ 129
백경화 ( Baek Kyung-Hwa ) - Gangneung-Wonju National University College of Dentistry Department of Pharmacology

Abstract


Osteocalcin is the most abundant non-collagenous protein produced in bone. It has traditionally been regarded as a marker of bone turnover and is thought to act in the bone matrix to regulate mineralization. However, emerging knowledge regarding osteocalcin has expanded to include functions in energy metabolism, fertilization, and regulation of cognition. Fully carboxylated osteocalcin binds to hydroxyapatite, thereby modulating bone turnover, whereas undercarboxylated osteocalcin in the circulation binds to osteocalcin-sensing receptors and acts as a hormone that affects multiple physiological aspects. In this review, we summarize the current knowledge regarding the hormonal actions of osteocalcin in various organs and potential cellular downstream signaling pathway that may be involved.

키워드

Osteocalcin; Undercarboxylated osteocalcin; Bone derived hormone; Osteoblasts
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