Glucocorticoids reduce alveolar and trabecular bone in mice - 26/01/13
, Yves Gallois a, c, Erick Legrand a, b, Maurice Audran a, b, Daniel Chappard a
Corresponding author. Tel.: +33 2 44 68 83 49; fax: +33 2 44 68 83 50.Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
| pages | 5 |
| Iconographies | 4 |
| Vidéos | 0 |
| Autres | 0 |
Abstract |
Glucocorticoid (GC) treatment is the main cause of secondary osteoporosis. There are some controversies about the relationships between alveolar bone loss and bone loss at the appendicular and axial skeleton.
Objective |
To assess, in parallel, the effects of GCs on alveolar bone and on the tibia in a mice model.
Methods |
Five-month-old male Swiss-Webster mice were randomized into two groups. Pellets releasing 5mg/kg/day of prednisolone or control pellets were subcutaneously implanted for 28days. After euthanasia, the right tibia and the right hemimandible of each mouse were analyzed by histomorphometry and microcomputed tomography. Alveolar bone consists of a thin slab between the incisor and the molar roots connected with the alveolar processes. A 2D-frontal section was done through the pulp chamber of the first molar and was used to measure the thickness of the alveolar bone slab. A 2D-sagittal section was done through the pulp chamber of the three molars and was used to measure bone volume in the alveolar processes.
Results |
At day 28, thickness and bone volume of alveolar bone were significantly decreased in the GC group (P<0.05). At the tibia, GCs decreased bone formation with a reduced mineral apposition rate and bone formation rate and a significant decrease in BV/TV and Tb.Th (P<0.05).
Conclusion |
Although the amount of alveolar bone is very low in the mouse, this study shows that GCs can induce an alveolar bone loss in long-term treated animals.
Le texte complet de cet article est disponible en PDF.Keywords : Alveolar bone, Osteoporosis, MicroCT, Glucocorticoid, Bone turnover
Plan
Vol 80 - N° 1
P. 77-81 - janvier 2013 Retour au numéro
Article précédent
- Impairment of two types of circulating endothelial progenitor cells in patients with glucocorticoid-induced avascular osteonecrosis of the femoral head
- Chao Chen, Shuhua Yang, Yong Feng, Xinghuo Wu, Dong Chen, Qian Yu, Xiaohong Wang, Jing Li, Juan Chen
- Evaluation of the benefits of low back pain patients’ education workshops during spa therapy
- Vincent Gremeaux, Charles Benaïm, Serge Poiraudeau, Christian Hérisson, Arnaud Dupeyron, Emmanuel Coudeyre
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?