Cited by 74Vitamin D Research StudiesBone Metabolism and DiseasesBone health and osteoporosis research

Vitamin D regulates osteocyte survival and perilacunar remodeling in human and murine bone

Rolvien, Tim, Krause, Matthias, Jeschke, Anke, Yorgan, Timur, Püschel, Klaus, Schinke, Thorsten, Busse, Björn, Demay, Marie B. +1 more·2017·Bone

Abstract

Osteocytes are the most abundant bone cells and are highly regulated by external stimuli. Vitamin D and osteocytes cooperatively regulate bone remodeling as well as phosphate and calcium homeostasis. However, it is unclear if vitamin D regulates osteocyte number, connectivity or size in the setting of altered bone formation or impaired mineralization. Sixty iliac crest biopsies of patients with varying vitamin D levels were examined to analyze osteocyte number, osteocyte connectivity and osteocyte viability using high-resolution imaging. Osteocyte parameters were also quantified in mice lacking the vitamin D receptor (Vdr-/-) and in wildtype littermates. The cortical and cancellous bone of patients with vitamin D deficiency exhibited a significant decrease in the number of viable osteocytes, as well as increased osteocyte apoptosis and impaired osteocyte connectivity, based on evaluation of the canalicular network. The number of osteocytes was also decreased in Vdr-deficient mice, in comparison to wildtype controls, and this was accompanied by enlargement of osteocyte lacunae. A high calcium diet normalized the osteocyte lacunar area in Vdr-deficient mice, but failed to normalize osteocyte number. Thus, a diet-independent decrease in osteocyte number in Vdr-deficient mice suggests a mechanism that is directly dependent on the VDR, since vitamin D may promote the transition from osteoblasts to osteocytes. The increase in lacunar area the in Vdr-deficient mice, which is normalized by the high calcium diet suggests this phenotype is due to osteocytic osteolysis. These investigations demonstrate that vitamin D plays a role in the regulation of osteocyte number and perilacunar remodeling.

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Crossref · 10.1016/j.bone.2017.06.022

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Authors
Rolvien, T., Krause, M., Jeschke, A., Yorgan, T., Püschel, K., Schinke, T., Busse, B., Demay, M. B., & Amling, M.
Affiliations
  • University Medical Center Hamburg-Eppendorf (DE)
  • Harvard University (US)
Corresponding author
Amling, Michael
Venue
Bone
Publisher
Elsevier BV
Published
2017-10
Volume
103
Pages
78-87
ISSN
  • 1873-2763 (ISSN-L)
  • 8756-3282
OpenAlex
W2732802085
Cited by
74
References
49
Citations by year
2026: 2 · 2025: 3 · 2024: 7 · 2023: 8 · 2022: 9 · 2021: 10 · 2020: 13 · 2019: 12 · 2018: 9 · 2017: 1
FWCI
7.54
Type
journal article
Language
en
Open access
closed
Locations
  • Bone (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Vitamin D Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
Keywords
vitamin D, osteocytes, osteocyte survival, vitamin D receptor, osteocyte apoptosis, vitamin D deficiency, high-calcium diet, bone remodeling, calcium homeostasis, phosphate homeostasis, iliac crest bone
MeSH terms
Animals, Cell Survival, Humans, Osteocytes, Vitamin D, Vitamin D Deficiency, Bone Remodeling, Receptors, Calcitriol, Mice, Knockout, Mice

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