Titre :

Long-Term Follow-up After Ovariectomy Reveals Correlations Between Bone Marrow Adiposity and Trabecular Bone Quality in the Proximal Metaphysis of Tibiae in Rats

Auteur(s) :

Bedez, Maxime [Auteur]
Université de Lille
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Falgayrac, Guillaume [Auteur]
Université de Lille
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Béhal, Hélène [Auteur]
Evaluation des technologies de santé et des pratiques médicales - ULR 2694 [METRICS]
Cailliau, Émeline [Auteur]
Evaluation des technologies de santé et des pratiques médicales - ULR 2694 [METRICS]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Delattre, Jérôme [Auteur]
Université de Lille
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Coutel, Xavier [Auteur]
Université de Lille
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Olejnik, Cecile [Auteur]
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Faculté de Chirurgie Dentaire
Université de Lille

Titre de la revue :

Calcified Tissue International

Éditeur :

Springer Verlag

Date de publication :

2024-10-07

ISSN :

0171-967X

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

Abstract This study aimed to evaluate the correlation between BMAT and bone quality, describe the long-term effects of ovariectomy on bone, and investigate BMAT's spatial distribution. Fifteen-months-old female Sprague‒Dawley ...
Lire la suite >Abstract This study aimed to evaluate the correlation between BMAT and bone quality, describe the long-term effects of ovariectomy on bone, and investigate BMAT's spatial distribution. Fifteen-months-old female Sprague‒Dawley rats were studied, comparing ovariectomized (OVX, n = 22) and sham-operated (SHAM, n = 11) groups at 6 months. Tibias were analyzed for bone microarchitecture, BMAT (microcomputed tomography), mineral parameters (quantitative backscattered electron imaging), and bone composition (Raman microspectroscopy). The OVX tibias showed severe trabecular bone loss (lower bone volume/total volume, p < 0.001) with increased BMAT (higher adipose volume per marrow volume, p < 0.001), decreased mineral content (lower calcium concentration, p < 0.001), and altered organic components (lower mineral/matrix ratio in new bone, p = 0.03 trabecular surface, p < 0.001 trabecular core). When the data are pooled over both groups (SHAM and OVX), the adipose volume/marrow volume ratio was negatively correlated with bone volume/total volume ( r = − 0.79, p < 0.001) and mineral/matrix ratio ( r = − 0.37, p = 0.04 trabecular surface; r = − 0.65, p < 0.001 trabecular core) and positively correlated with crystallinity ( r = 0.55, p = 0.001 trabecular surface; r = 0.49, p = 0.006 trabecular core). The mineral/matrix ratio of trabecular surface new bone was strongly negatively correlated with the adipose compartment nearest to the bone surface. These findings suggest mechanisms underlying BMAT's role in bone resorption.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Marrow Adiposity & Bone Lab (MABLab) - ULR 4490

Source :

Harvested from HAL