Summary
Salmon calcitonin (sCT) at doses of 100 and 50 UI given subcutaneously to growing rats produced in vivo evidence of osteoclastic activity inhibition. Histological assessment was carried out by measuring the perichondrial ring of Lacroix height, and a dose-correlated effect was found. These aspects were coupled with an increase in the osteoclast number and suggested that in studies with bone resorption inhibitors, morphological evaluation based on osteoclasts count is not reliable. The changes of the metaphysis suggested also that sCT affects the activity of hypertrophic chondrocytes of the growth plate. Plasma calcium levels did not differ significantly between treated rats and controls; an increased phosphatemia was observed in sCT-treated animals.
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Pazzaglia, U.E., Zatti, G., Di Nucci, A. et al. Inhibitory effect of salmon calcitonin on bone resorption: Morphological study of the tibial growth plate in rats. Calcif Tissue Int 52, 125–129 (1993). https://doi.org/10.1007/BF00308321
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DOI: https://doi.org/10.1007/BF00308321