The effect of gestagens on bone turnover in sheep

C. A. Lill; K. Bruppacher; F. Janett; J. Auer; F. Zeifang; E. Schneider

doi:10.1055/s-0038-1632740

Veterinary and Comparative Orthopaedics and Traumatology, Table of Contents

Vet Comp Orthop Traumatol 2002; 15(04): 205-209
DOI: 10.1055/s-0038-1632740

Original Research

Schattauer GmbH

The effect of gestagens on bone turnover in sheep

C. A. Lill

¹AO Research Institute Davos, Davos, Switzerland

²Department of Orthopaedic Surgery, University of Heidelberg, Heidelberg, Germany

,

K. Bruppacher

¹AO Research Institute Davos, Davos, Switzerland

,

F. Janett

⁴Clinic of Reproduction, University of Zurich, Zurich, Switzerland

,

J. Auer

³Veterinary Surgery Clinic, University of Zurich, Zurich, Switzerland

,

F. Zeifang

²Department of Orthopaedic Surgery, University of Heidelberg, Heidelberg, Germany

,

E. Schneider

¹AO Research Institute Davos, Davos, Switzerland

› Author Affiliations

Abstract

Summary

The effects of two gestagens on bone turnover were investigated in three groups of female sheep comparable in age and weight. Group A (n = 10) was given a single intramuscular injection of 50 mg chlormadinon acetate (CMA), group B (n = 9) received 140 mg medroxyprogesterone acetate (MPA), and control group C (n = 9) received 5 ml physiological NaCI-solution. Plasma progesterone was measured weekly over 3 months. Bone mineral density (BMD) in the right distal tibia and calcaneus were determined every four weeks during the four months of the study duration, using peripheral quantitative computed tomography (pQCT). At the same times total alkaline phosphatase (AP) was determined. No significant changes of BMD were found in the three groups during the four months. Total alkaline phosphatase showed a significant decrease of 36-45% in all groups during the first six weeks. Sheep seem to have a comparable bone metabolism to humans with respect to the short term effect of gestagens, i. e. MPA and CMA.

Keywords

Osteoporosis - gestagens - sheep - BMD

Full Text

References

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