Cited by 335Bone Metabolism and DiseasesBone and Dental Protein StudiesAlkaline Phosphatase Research Studies

Osteocalcin: Skeletal and extra‐skeletal effects

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Neve, Anna, Corrado, Addolorata, Cantatore, Francesco Paolo·2013·Journal of Cellular Physiology

Abstract

Osteocalcin (OC) is a non‐collagenous, vitamin K‐dependent protein secreted in the late stage of osteoblasts differentiation. The presence of the three residues of γ‐carbossiglutamatic acid, specific of the active form of OC protein, allows the protein to bind calcium and consequently hydroxyapatite. The osteoblastic OC protein is encoded by the bone γ‐carbossiglutamate gene whose transcription is principally regulated by the Runx2/Cbfa1 regulatory element and stimulated by vitamin D 3 through a steroid‐responsive enhancer sequence. Even if data obtained in literature are controversial, the dual role of OC in bone can be presumed as follows: firstly, OC acts as a regulator of bone mineralization; secondly, OC regulates osteoblast and osteoclast activity. Recently the metabolic activity of OC, restricted to the un‐carboxylated form has been demonstrated in osteoblast‐specific knockout mice. This effect is mediated by the regulation of pancreatic β‐cell proliferation and insulin secretion and adiponectin production by adipose tissue and leads to the regulation of glucose metabolism and fat mass. Nevertheless, clinical human studies only demonstrated the correlation between OC levels and factors related to energy metabolism. Thus further investigations in humans are required to demonstrate the role of OC in the regulation of human energy metabolism. Moreover, it is presumable that OC also acts on blood vessels by inducing angiogenesis and pathological mineralization. This review highlights the recent studies concerning skeletal and extra‐skeletal effects of OC. J. Cell. Physiol. 228: 1149–1153, 2013. © 2012 Wiley Periodicals, Inc.

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Authors
Neve, A., Corrado, A., & Cantatore, F. P.
Affiliations
University of Foggia (IT)
Corresponding author
Cantatore, Francesco Paolo
Venue
Journal of Cellular Physiology
Publisher
Wiley
Published
2013-02-25
Volume
228
Issue
6
Pages
1149-1153
ISSN
  • 0021-9541 (ISSN-L)
  • 1097-4652
OpenAlex
W2093489016
Cited by
335
References
100
Citations by year
2026: 8 · 2025: 14 · 2024: 15 · 2023: 20 · 2022: 27 · 2021: 38 · 2020: 30 · 2019: 27 · 2018: 33 · 2017: 27 · 2016: 19 · 2015: 38 · 2014: 28 · 2013: 11
FWCI
2.25
Type
journal article
Language
en
Open access
Locations
  • Journal of Cellular Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Alkaline Phosphatase Research Studies
Keywords
osteocalcin, vitamin K-dependent proteins, gamma-carboxyglutamic acid, bone mineralization, osteogenic differentiation, osteoclast activity, vitamin D3, uncarboxylated osteocalcin, beta-cell function, insulin secretion, adiponectin, glucose metabolism, energy metabolism, angiogenesis, vascular calcification
MeSH terms
Animals, Bone and Bones, Calcinosis, Energy Metabolism, Gene Expression Regulation, Humans, Osteoblasts, Osteocytes, Signal Transduction, Osteocalcin, Bone Remodeling, Neovascularization, Physiologic, Adiposity

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