Alterations in growth plate and articular cartilage morphology are associated with reduced SOX9 localization in the magnesium-deficient rat
| Autor: | Angelica Frausto, Robert K. Rude, Livia Y. Wei, Barbara G. Mills, HJ Norton, Jane A. Ingram, Helen E. Gruber |
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| Rok vydání: | 2004 |
| Předmět: |
Cartilage
Articular medicine.medical_specialty Histology chemistry.chemical_element Substance P SOX9 Chondrocyte Extracellular matrix Rats Sprague-Dawley chemistry.chemical_compound Internal medicine Magnesium deficiency (medicine) medicine Animals Growth Plate Chemistry Magnesium Cartilage Body Weight High Mobility Group Proteins SOX9 Transcription Factor General Medicine musculoskeletal system medicine.disease Animal Feed Immunohistochemistry Rats Medical Laboratory Technology Endocrinology medicine.anatomical_structure Magnesium Deficiency Transcription Factors |
| Zdroj: | Biotechnichistochemistry : official publication of the Biological Stain Commission. 79(1) |
| ISSN: | 1052-0295 |
| Popis: | Insufficient dietary magnesium (Mg) intake has been associated with low bone mass in humans,and recent basic science studies have indicated that this bone loss may be secondary to increased release of substance P and TNFc Much less is known about the effects of low Mg intake on cartilage. We have evaluated growth plate and articular cartilage in rats following a 6 month dietary Mg restriction. Histomorphometry demonstrated significantly decreased distal femur articular cartilage chondrocyte density and decreased tibial growth plate width in experimental animals compared to controls. Growth plates of Mg-restricted animals showed reduced chondrocyte column formation. Extracellular matrix of both articular cartilage and growth plates in experimental animals contained reduced amounts of proteoglycans. Immunolocalization of Sox9 was decreased in both articular and growth plate cartilage in experimental animals compared to controls, suggesting that reduced Mg intake causes cartilage changes that may be secondary to reduced levels of the SOX9 transcription factor. |
| Databáze: | OpenAIRE |
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