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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
1   AO Research Institute Davos, Davos, Switzerland
2   Department of Orthopaedic Surgery, University of Heidelberg, Heidelberg, Germany
,
K. Bruppacher
1   AO Research Institute Davos, Davos, Switzerland
,
F. Janett
4   Clinic of Reproduction, University of Zurich, Zurich, Switzerland
,
J. Auer
3   Veterinary Surgery Clinic, University of Zurich, Zurich, Switzerland
,
F. Zeifang
2   Department of Orthopaedic Surgery, University of Heidelberg, Heidelberg, Germany
,
E. Schneider
1   AO Research Institute Davos, Davos, Switzerland
› Author Affiliations
Further Information

Publication History

Received 03 January 2002

Accepted 22 March 2002

Publication Date:
08 February 2018 (online)

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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
 

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