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Patil VS, Mali RS, Moghe AS. Evaluation and comparison of Vitamin D receptors in periodontal ligament tissue of Vitamin D-deficient chronic periodontitis patients before and after supplementation of Vitamin D3. J Indian Soc Periodontol 2019; 23:100-105. [PMID: 30983779 PMCID: PMC6434724 DOI: 10.4103/jisp.jisp_173_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background: Vitamin D, an important hormone required by the body, exerts its biological effects through Vitamin D receptors (VDRs) present on target cells. Vitamin D is ineffective in tissues which lack VDR. Various tissues show the presence of VDRs. However, evidence for the presence of VDRs in human periodontal ligament tissue in fully erupted teeth in adults is lacking. The present study intends to evaluate the presence of VDRs in periodontal ligament (PDL) tissue and assess their response to serum Vitamin D3 levels in chronic periodontic patients. Materials and Methods: A total of 19 chronic periodontitis patients were enrolled in the study and tested for serum 25(OH)D3 levels. Deficient patients were supplemented with Vitamin D3. PDL tissue of these patients was isolated after tooth extraction before and after supplementation of Vitamin D3 and analyzed for the presence of VDR in PDL tissue by using enzyme-linked immunosorbent assay. Results: All the chronic periodontitis patients were found to be deficient in Vitamin D3. The mean serum 25(OH)D3 level before supplementation was 13.96 ng/mL which significantly increased to 35.12 ng/mL after supplementation of Vitamin D3 for 6 weeks. VDR analysis determined mean VDR conc. in PDL tissue to be -1.443 ng/mL, which increased to 2.38 ng/mL after supplementation. A concentration dependent correlation was seen between serum 25(OH)D3 levels and VDR conc. in PDL tissue after supplementation. Conclusions: The study determined Vitamin D Receptors (VDR) in PDL tissue after supplementation of Vitamin D. Thus in addition to the standard treatment modalities, Vitamin D3 supplementation would be an important factor for generation of adequate immune response.
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Affiliation(s)
- Vishakha Sarang Patil
- Department of Periodontology, Bharati Vidyapeeth (Deemed to be University), Dental College and Hospital, Pune, Maharashtra, India
| | - Rohini Salil Mali
- Department of Periodontology, Bharati Vidyapeeth (Deemed to be University), Dental College and Hospital, Pune, Maharashtra, India
| | - Alpana Subodh Moghe
- Department of Cell and Molecular Biology, Rajiv Gandhi Institute of Information Technology and Biotechnology, Bharati Vidyapeeth (Deemed to be University), Pune, Maharashtra, India
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2
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Bischoff-Ferrari HA, Orav EJ, Egli A, Dawson-Hughes B, Fischer K, Staehelin HB, Rizzoli R, Hodler J, von Eckardstein A, Freystaetter G, Meyer U, Guggi T, Burckhardt P, Schietzel S, Chocano-Bedoya P, Theiler R, Willett WC, Felson D. Recovery after unilateral knee replacement due to severe osteoarthritis and progression in the contralateral knee: a randomised clinical trial comparing daily 2000 IU versus 800 IU vitamin D. RMD Open 2018; 4:e000678. [PMID: 30018805 PMCID: PMC6045766 DOI: 10.1136/rmdopen-2018-000678] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/10/2018] [Indexed: 01/24/2023] Open
Abstract
Objective To test whether daily high-dose vitamin D improves recovery after unilateral total knee replacement. Methods Data come from a 24-month randomised, double-blind clinical trial. Adults aged 60 and older undergoing unilateral joint replacement due to severe knee osteoarthritis were 6-8 weeks after surgery randomly assigned to receive daily high-dose (2000 IU) or standard-dose (800 IU) vitamin D3. The primary endpoints were symptoms (Western Ontario and McMaster Universities Arthritis Index pain and function scores) assessed at baseline, 6, 12, 18 and 24 months in both knees, and the rate of falls over 24 months. The secondary outcomes were sit-to-stand performance, gait speed, physical activity and radiographic progression in the contralateral knee. Results We recruited 273 participants, 137 were randomised to receive 2000 IU and 136 were randomised to receive 800 IU vitamin D per day. 2000 IU vitamin D increased 25-hydroxyvitamin D levels to 45.6 ng/mL and 800 IU vitamin D to 37.1 ng/mL at month 24 (p<0.0001). While symptoms improved significantly in the operated knee and remained stable in the contralateral knee over time, none of the primary or secondary endpoints differed by treatment group over time. The rate of falls over 24 months was 1.05 with 2000 IU and 1.07 with 800 IU (p=0.84). 30.5% of participants in the 2000 IU and 31.3% of participants in the 800 IU group had radiographic progression in the contralateral knee over 24 months (p=0.88). Conclusions Our findings suggest that a 24-month treatment with daily 2000 IU vitamin D did not show greater benefits or harm than a daily standard dose of 800 IU among older adults undergoing unilateral total knee replacement.
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Affiliation(s)
- Heike A Bischoff-Ferrari
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland.,University Clinic for Acute Geriatric Care, City Hospital Waid, Zurich, Switzerland
| | - E John Orav
- Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Andreas Egli
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Bess Dawson-Hughes
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts, USA
| | - Karina Fischer
- Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | | | - Rene Rizzoli
- Division of Bone Diseases, Geneva University Hospitals, Geneva, Switzerland
| | - Juerg Hodler
- Institute of Radiology, University Hospital Zurich, Zurich, Switzerland
| | | | - Gregor Freystaetter
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Ursina Meyer
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Thomas Guggi
- Department of Orthopaedic Surgery, Schulthess Clinic, Zurich, Switzerland
| | | | - Simeon Schietzel
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Patricia Chocano-Bedoya
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Robert Theiler
- Department of Geriatrics and Aging Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.,Center on Aging and Mobility, University of Zurich, Zurich, Switzerland
| | - Walter C Willett
- Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, USA
| | - David Felson
- Clinical Epidemiology Research and Training Unit, Boston University, Boston, Massachusetts, USA
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3
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Hansen AK, Figenschau Y, Zubiaurre-Martinez I. Co-expression of 1α-hydroxylase and vitamin D receptor in human articular chondrocytes. BMC Musculoskelet Disord 2017; 18:432. [PMID: 29110708 PMCID: PMC5674837 DOI: 10.1186/s12891-017-1791-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 10/30/2017] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The aim was to investigate whether resident chondrocytes in human articular cartilage and in subculture express vitamin D receptor (VDR) and the enzyme that hydroxylates the prohormone 25(OH)D3 to the active hormone 1α,25(OH)2D3, namely 1α-hydroxylase (CYP27B1). Any putative effects of vitamin D on chondrocytes were also explored. METHODS Cartilage from human osteoarthritic knee joints, cultured chondrocytes and cells grown in 3D spheroids were examined for the expression of VDR and 1α-hydroxylase by PCR, Western blots and immunolabelling. Receptor engagement was judged by visualizing nuclear translocation. The effects of 25(OH)D3 and 1α,25(OH)2D3 on chondrocyte functions were assessed in proliferation-, chondrogenesis- and cartilage signature-gene expression assays. The capability of chondrocytes to hydroxylate 25(OH)D3 was determined by measuring the concentration of metabolites. Finally, a putative regulation of receptor and enzyme expression by 1α,25(OH)2D3 or interleukin (IL)-1β, was investigated by Western blot. RESULTS Gene expression was positive for VDR in freshly isolated cells from native cartilage, cells subcultured in monolayers and in spheroids, whereas protein expression, otherwise judged low, was apparent in monolayers. Nuclear translocation of VDR occurred upon 1α,25(OH)2D3 treatment. Transcripts for 1α-hydroxylase were detected in freshly isolated cells, cultured cells and spheroids. Western blots and immunolabelling detected 1α-hydroxylase protein in all materials, while staining of tissue appeared confined to cells at the superficial layer. A dose-dependent 1α,25(OH)2D3 production was measured when the enzyme substrate was supplied to cell cultures. Western blots revealed that the VDR, but not 1α-hydroxylase, was induced by IL-1β treatment in adherent cells. Proliferation in monolayers was enhanced by both 25(OH)D3 and 1α,25(OH)2D3, and both compounds had negative effects on chondrogenesis and cartilage-matrix genes. CONCLUSIONS VDR expression in resident cartilage chondrocytes, generally considered differentiated cells, is elusive. A similar pattern applies for redifferentiated chondrocytes in spheroid cultures, whereas dedifferentiated cells, established in monolayers, stably express VDR. Both 25(OH)D3 and 1α,25(OH)2D3 are able to potentiate cell proliferation but have a negative impact in proteoglycan synthesis. Chondrocytes express 1α-hydroxylase and may contribute to the production of 1α,25(OH)2D3 into the joint environment. Effects of vitamin D could be unfavourable in the context of cartilage matrix synthesis.
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Affiliation(s)
- Ann Kristin Hansen
- Department of Orthopaedic Surgery, University Hospital of North Norway, Tromsø, Norway. .,Bone and joint research group, Institute of Clinical Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway.
| | - Yngve Figenschau
- Department of Laboratory Medicine, University Hospital of North Norway, Tromsø, Norway.,Endocrinology Research Group, Institute of Clinical Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway.,Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Inigo Zubiaurre-Martinez
- Bone and joint research group, Institute of Clinical Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
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Elangovan H, Chahal S, Gunton JE. Vitamin D in liver disease: Current evidence and potential directions. Biochim Biophys Acta Mol Basis Dis 2017; 1863:907-916. [PMID: 28064017 DOI: 10.1016/j.bbadis.2017.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 12/06/2016] [Accepted: 01/02/2017] [Indexed: 01/10/2023]
Abstract
Consistent with its multifaceted nature, growing evidence links vitamin D with hepatic disease. In this review, we summarise the roles of vitamin D in different liver pathologies and explore the clinical utility of vitamin D-based treatments in hepatology. We find that the small number of clinical trials coupled with the profound heterogeneity of study protocols limits the strength of evidence needed to ascribe definite clinical value to the hormone in liver disease. Nevertheless, the experimental data is promising and further bench and bedside studies will likely define a clearer role in hepatic therapeutics.
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Affiliation(s)
- Harendran Elangovan
- The Garvan Institute of Medical Research, The University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Sarinder Chahal
- The Garvan Institute of Medical Research, The University of New South Wales (UNSW), Sydney, NSW, Australia
| | - Jenny E Gunton
- The Garvan Institute of Medical Research, The University of New South Wales (UNSW), Sydney, NSW, Australia; The Westmead Institute of Medical Research, The University of Sydney, NSW, Australia.
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5
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Girgis CM, Baldock PA, Downes M. Vitamin D, muscle and bone: Integrating effects in development, aging and injury. Mol Cell Endocrinol 2015; 410:3-10. [PMID: 25837735 DOI: 10.1016/j.mce.2015.03.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 03/24/2015] [Accepted: 03/24/2015] [Indexed: 12/14/2022]
Abstract
Beyond the established effects of muscle loading on bone, a complex network of hormones and growth factors integrates these adjacent tissues. One such hormone, vitamin D, exerts broad-ranging effects in muscle and bone calcium handling, differentiation and development. Vitamin D also modulates muscle and bone-derived hormones, potentially facilitating cross-talk between these tissues. In the clinical setting, vitamin D deficiency or mutations of the vitamin D receptor result in generalized atrophy of muscle and bone, suggesting coordinated effects of vitamin D at these sites. In this review, we discuss emerging evidence that vitamin D exerts specific effects throughout the life of the musculoskeletal system - in development, aging and injury. From this holistic viewpoint, we offer new insights into an old debate: whether vitamin D's effects in the musculoskeletal system are direct via local VDR signals or indirect via its systemic effects in calcium and phosphate homeostasis.
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Affiliation(s)
- Christian M Girgis
- Westmead Millennium Institute for Medical Research, Sydney, NSW, Australia; Faculty of Medicine, University of Sydney, Sydney, NSW, Australia; Garvan Institute of Medical Research, Sydney, NSW, Australia.
| | - Paul A Baldock
- Garvan Institute of Medical Research, Sydney, NSW, Australia
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Girgis CM, Mokbel N, Cha KM, Houweling PJ, Abboud M, Fraser DR, Mason RS, Clifton-Bligh RJ, Gunton JE. The vitamin D receptor (VDR) is expressed in skeletal muscle of male mice and modulates 25-hydroxyvitamin D (25OHD) uptake in myofibers. Endocrinology 2014; 155:3227-37. [PMID: 24949660 PMCID: PMC4207908 DOI: 10.1210/en.2014-1016] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 06/13/2014] [Indexed: 12/03/2022]
Abstract
Vitamin D deficiency is associated with a range of muscle disorders, including myalgia, muscle weakness, and falls. In humans, polymorphisms of the vitamin D receptor (VDR) gene are associated with variations in muscle strength, and in mice, genetic ablation of VDR results in muscle fiber atrophy and motor deficits. However, mechanisms by which VDR regulates muscle function and morphology remain unclear. A crucial question is whether VDR is expressed in skeletal muscle and directly alters muscle physiology. Using PCR, Western blotting, and immunohistochemistry (VDR-D6 antibody), we detected VDR in murine quadriceps muscle. Detection by Western blotting was dependent on the use of hyperosmolar lysis buffer. Levels of VDR in muscle were low compared with duodenum and dropped progressively with age. Two in vitro models, C2C12 and primary myotubes, displayed dose- and time-dependent increases in expression of both VDR and its target gene CYP24A1 after 1,25(OH)2D (1,25 dihydroxyvitamin D) treatment. Primary myotubes also expressed functional CYP27B1 as demonstrated by luciferase reporter studies, supporting an autoregulatory vitamin D-endocrine system in muscle. Myofibers isolated from mice retained tritiated 25-hydroxyvitamin D3, and this increased after 3 hours of pretreatment with 1,25(OH)2D (0.1 nM). No such response was seen in myofibers from VDR knockout mice. In summary, VDR is expressed in skeletal muscle, and vitamin D regulates gene expression and modulates ligand-dependent uptake of 25-hydroxyvitamin D3 in primary myofibers.
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Affiliation(s)
- Christian M Girgis
- Garvan Institute of Medical Research (C.M.G., N.M., K.M.C., J.E.G.), Sydney, New South Wales, Australia 2010; Faculties of Medicine (C.M.G., M.A., R.S.M., R.J.C.-B., J.E.G.) and Veterinary Science (D.R.F.) University of Sydney, Sydney, New South Wales, Australia 2145; Bosch Institute (M.A., R.S.M.), University of Sydney, Sydney, New South Wales, Australia 2006; Murdoch Childrens Research Institute (P.J.H.), Melbourne, Victoria, Australia 3000; The Kolling Institute of Medical Research (R.J.C.-B.), Sydney, New South Wales, Australia 2065; Royal North Shore Hospital (R.J.C.-B.), Sydney, New South Wales, Australia 2065; Department of Endocrinology and Diabetes (J.E.G.), Westmead Hospital, Sydney, New South Wales, Australia 2145; and St Vincent's Clinical School (J.E.G.), University of New South Wales, Sydney, New South Wales, Australia 2010
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7
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Where is the vitamin D receptor? Arch Biochem Biophys 2012; 523:123-33. [PMID: 22503810 DOI: 10.1016/j.abb.2012.04.001] [Citation(s) in RCA: 402] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 03/30/2012] [Accepted: 04/01/2012] [Indexed: 02/08/2023]
Abstract
The vitamin D receptor (VDR) is a member of the nuclear receptor superfamily and plays a central role in the biological actions of vitamin D. VDR regulates the expression of numerous genes involved in calcium/phosphate homeostasis, cellular proliferation and differentiation, and immune response, largely in a ligand-dependent manner. To understand the global function of the vitamin D system in physiopathological processes, great effort has been devoted to the detection of VDR in various tissues and cells, many of which have been identified as vitamin D targets. This review focuses on the tissue- and cell type-specific distribution of VDR throughout the body.
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Avci D, Bachmann GA. Osteoarthritis and osteoporosis in postmenopausal women: clinical similarities and differences. Menopause 2004; 11:615-21. [PMID: 15545789 DOI: 10.1097/01.gme.0000119985.45613.7e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Osteoarthritis and osteoporosis are two major health problems affecting more than 60% of post-menopausal women in the United States. The promotion of healthy aging and the prevention and reduction of morbidity and mortality is a main concern for healthcare providers. The similarities and differences in pathophysiology, diagnosis, and treatment for osteoarthritis and osteoporosis are often not clear for clinicians. Some osteoporosis treatments, including bisphosphonates and vitamin D, seem to have a beneficial effect on osteoarthritis as well. A review of these two conditions in terms of bone mineral density, bone turnover, hormonal effects, and treatment options will be discussed.
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Affiliation(s)
- Dilek Avci
- Women's Health Institute, Department of Obstetrics/Gynecology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
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Abstract
Bone is not structurally normal in osteoarthritis (OA). Periarticular bone in OA has increased turnover, decreased bone mineral content and stiffness, and decreased trabecular numbers. The increased turnover of collagen, in particular, may affect the biomechanical competence of bone and is driven by a number of processes, including osteoblast phenotypic expression, chondrocyte apoptosis, matrix metalloproteinases, and growth factors. This turnover is reflected in alterations in biomarkers and bone mineral density (BMD). High BMD at non-joint sites is associated with an increased risk of OA; however, low BMD and high bone turnover appears to be associated with more rapid progression. These alterations in bone turnover offer new therapeutic opportunities.
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Affiliation(s)
- David J Hunter
- Department of Rheumatology and Twin Research, Saint Thomas' Hospital, Lambeth Palace Road, London SE 1 7EH, UK
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10
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Affiliation(s)
- T McAlindon
- Arthritis Center, Boston University Medical Center, MA 02118, USA
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Gerstenfeld LC, Kelly CM, Von Deck M, Lian JB. Comparative morphological and biochemical analysis of hypertrophic, non-hypertrophic and 1,25(OH)2D3 treated non-hypertrophic chondrocytes. Connect Tissue Res 1990; 24:29-39. [PMID: 1692522 DOI: 10.3109/03008209009152420] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A comparative study of Type X collagen expression, chondrocyte morphology, and the expression of two genes controlling chondrocyte morphology (beta-actin and fibronectin) was carried out on chondrocytes derived from a tissue that remains as permanent hyaline cartilage in vivo (embryonic chicken caudal sterna), from a tissue that undergoes endochondral replacement (embryonic chicken ventral vertebrae) and caudal sternal chondrocytes treated with 1,25(OH)2D3. Under identical in vitro growth conditions and times, sternal chondrocytes grew as rounded non-adherent cells, and vertebral chondrocytes grew as adherent polygonal cells. Upon treatment with 10(-8) M 1,25(OH)2D3 over a twelve day period the sternal chondrocytes showed complete adherence and took on an identical appearance as the vertebral chondrocytes. Cellular adherence of both vertebral and 1,25(OH)2D3 treated sternal chondrocytes was associated with 10 X increased beta-actin, fibronectin and their corresponding mRNA's. Changes in connective tissue expression were observed with altered cellular morphology. Total collagen synthesis was 35-50% lower in both hormone treated and vertebral chondrocytes. Type II collagen was the major collagen type produced by all chondrocyte cultures; however, in both vertebral and 1,25(OH)2D3 treated sternal chondrocytes, a 60 kD collagenous protein was identified. This short chain collagen was determined to be Type X collagen based on its molecular weight and its CNBr peptide maps. Analysis of Type X mRNA levels using a 33 base pair anti sense oligonucleotide sequence to Type X, demonstrated that vertebral cells showed six to seven times more mRNA than sternal chondrocytes. However, the low mRNA levels of type X mRNA in sternal chondrocytes were increased two to three times by 1,25(OH)2D3 treatment. These studies demonstrate that the steroid hormone 1,25(OH)2 vitamin D3 induced morphological, biochemical and molecular changes indicative of chondrocyte maturation from a hyaline to a more hypertrophic phenotype.
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Affiliation(s)
- L C Gerstenfeld
- Department of Orthopedic Surgery, Harvard Medical School, Boston, Massachusetts
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