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Molecular actions of glucocorticoids in cartilage and bone during health, disease, and steroid therapy

Item Type:Review
Title:Molecular actions of glucocorticoids in cartilage and bone during health, disease, and steroid therapy
Creators: Hartmann, Kerstin, Koenen, Mascha ORCID logoORCID: https://orcid.org/0000-0002-1024-4506, Schauer, Sebastian, Wittig-Blaich, Stephanie, Ahmad, Mubashir, Baschant, Ulrike and Tuckermann, Jan P. ORCID logoORCID: https://orcid.org/0000-0003-3691-275X
Abstract:Cartilage and bone are severely affected by glucocorticoids (GCs), steroid hormones that are frequently used to treat inflammatory diseases. Major complications associated with long-term steroid therapy include impairment of cartilaginous bone growth and GC-induced osteoporosis. Particularly in arthritis, GC application can increase joint and bone damage. Contrarily, endogenous GC release supports cartilage and bone integrity. In the last decade, substantial progress in the understanding of the molecular mechanisms of GC action has been gained through genome-wide binding studies of the GC receptor. These genomic approaches have revolutionized our understanding of gene regulation by ligand-induced transcription factors in general. Furthermore, specific inactivation of GC signaling and the GC receptor in bone and cartilage cells of rodent models has enabled the cell-specific effects of GCs in normal tissue homeostasis, inflammatory bone diseases, and GC-induced osteoporosis to be dissected. In this review, we summarize the current view of GC action in cartilage and bone. We further discuss future research directions in the context of new concepts for optimized steroid therapies with less detrimental effects on bone.
Keywords:Animal Disease Models, Bone Remodeling, Bone and Bones, Cartilage, Gene Expression Regulation, Glucocorticoid Receptors, Glucocorticoids, Insulin Resistance, Mesenchymal Stem Cells, Osteoarthritis, Receptor Cross-Talk, Rheumatoid Arthritis, Animals
Source:Physiological Reviews
ISSN:0031-9333
Publisher:American Physiological Society
Volume:96
Number:2
Page Range:409-47
Date:April 2016
Official Publication:https://doi.org/10.1152/physrev.00011.2015
PubMed:View item in PubMed

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