Pediatric Nephrology

, Volume 26, Issue 1, pp 111–117

Ibandronate affects bone growth and mineralization in rats with normal and reduced renal function

  • Dagmar-Christiane Fischer
  • Claudia Jensen
  • Anja Rahn
  • Birgit Salewski
  • Günther Kundt
  • Geert J. Behets
  • Patrick D’Haese
  • Dieter Haffner
Original Article

DOI: 10.1007/s00467-010-1660-5

Cite this article as:
Fischer, D., Jensen, C., Rahn, A. et al. Pediatr Nephrol (2011) 26: 111. doi:10.1007/s00467-010-1660-5

Abstract

Bisphosphonates have been shown to attenuate ectopic calcification in experimental uremia. While they are known to reduce bone turnover, the effects on endochondral bone formation have not yet been addressed. To address this issue, we administered male Sprague-Dawley rats weekly subcutaneous injections of either vehicle or ibandronate (1.25 μg/kg body weight) for a total of 10 weeks. The rats were randomly allocated into one of four groups: (1) vehicle-treated, sham-operated rats; (2) ibandronate-treated, sham-operated rats; (3) vehicle-treated, 5/6 nephrectomized rats; (4) ibandronate-treated, 5/6 nephrectomized rats. Bones were double labeled with tetracycline and demeclocycline in vivo, and tibiae were removed for analysis. Weight gain was similar in all groups. Ibandronate reduced body length gain and tibial growth rate in the sham-operated animals but not in the rats showing chronic renal failure (CRF). The height of the proliferative zone of the epiphyseal growth plate was reduced in the ibandronate-treated controls and tended to be reduced in CRF rats. A significant correlation between tibial growth rate and height of the proliferative zone was observed. Mineral apposition rates were significantly reduced in ibandronate-treated, sham-operated rats and tended to be reduced in CRF rats. In conclusion, ibandronate interferes with tibial growth and bone mineralization in young rats with normal and reduced renal function.

Keywords

Experimental uremiaRatBisphosphonateIbandronateGrowth plate morphology

Copyright information

© IPNA 2010

Authors and Affiliations

  • Dagmar-Christiane Fischer
    • 1
  • Claudia Jensen
    • 1
  • Anja Rahn
    • 1
  • Birgit Salewski
    • 1
  • Günther Kundt
    • 2
  • Geert J. Behets
    • 3
  • Patrick D’Haese
    • 3
  • Dieter Haffner
    • 1
  1. 1.Department of PediatricsUniversity Children’s Hospital RostockRostockGermany
  2. 2.Institute for Biostatistics and Informatics in MedicineUniversity of RostockRostockGermany
  3. 3.Laboratory of Pathophysiology, Department of MedicineUniversity of AntwerpAntwerpBelgium