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14.12.2017 | Original Research

Effect of Strontium Ranelate on the Muscle and Vertebrae of Ovariectomized Rats

verfasst von: D. Saul, B. Harlas, A. Ahrabi, R. L. Kosinsky, D. B. Hoffmann, M. Wassmann, R. Wigger, K. O. Böker, S. Sehmisch, M. Komrakova

Erschienen in: Calcified Tissue International | Ausgabe 6/2018

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Abstract

Osteoporosis is often accompanied by sarcopenia. The effect of strontium ranelate (SR) on muscle tissue has not been investigated sufficiently. In this study, the effect of different SR treatments on muscle was studied. Additionally, the lumbar vertebrae were analyzed. Three-month-old female rats were divided into five groups (n = 12): Group 1: untreated (NON-OVX); Group 2: ovariectomized and left untreated (OVX); Group 3: SR after OVX until the study ended (13 weeks, SR prophylaxis and therapy = pr+th); Group 4: OVX and SR for 8 weeks (SR prophylaxis = pr); Group 5: SR for 5 weeks from the 8 week after OVX (SR therapy = SR th). SR was applied in food (630 mg/kg body weight). The size of muscle fibers, capillary density, metabolic enzymes, and mRNA expression were assessed in soleus, gastrocnemius, and longissimus muscles. The vertebral bodies underwent micro-CT, biomechanical, and ashing analyses. In general, SR did not alter the muscle histological parameters. The changes in fiber size and capillary ratio were related to the body weight. Myostatin mRNA was decreased in Sr pr+th; protein expression was not changed. SR th led to increase in mRNA expression of vascular endothelial growth factor (Vegf-B). In lumbar spine, SR pr+th enhanced biomechanical properties, bone mineral density, trabecular area, density, and thickness and cortical density. The reduced calcium/phosphate ratio in the SR pr+th group indicates the replacement of calcium by strontium ions. SR has no adverse effects on muscle tissue and it shows a favorable time-dependent effect on vertebrae. A functional analysis of muscles could verify these findings.

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Titel: Effect of Strontium Ranelate on the Muscle and Vertebrae of Ovariectomized Rats
verfasst von: D. Saul
B. Harlas
A. Ahrabi
R. L. Kosinsky
D. B. Hoffmann
M. Wassmann
R. Wigger
K. O. Böker
S. Sehmisch
M. Komrakova
Publikationsdatum: 14.12.2017
Verlag: Springer US
Erschienen in: Calcified Tissue International / Ausgabe 6/2018
Print ISSN: 0171-967X
Elektronische ISSN: 1432-0827
DOI: https://doi.org/10.1007/s00223-017-0374-0

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