Prepubertal oophorectomy limits the accumulation of cancellous bone in the femur of growing rats with long-term effects on metaphyseal bone architecture

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dc.contributor.authorBaldock, P.
dc.contributor.authorMorris, H.
dc.contributor.authorMoore, R.
dc.contributor.authorNeed, A.
dc.contributor.authorDurbridge, T.
dc.date.issued1998
dc.description.abstractBone loss after oophorectomy of adult rats is more rapid and complete in the metaphysis than in the epiphysis of the femur, particularly in the proximal region of the metaphysis distant from the growth plate. This study was undertaken to determine the effects of prepubertal oophorectomy on femoral cancellous bone acquisition during growth. Rats were oophorectomized (OVX) or sham operated at 3 weeks of age and killed at intervals up to 78 weeks for scanning electron microscopy and histomorphometry of the distal femur. Differences in cancellous bone architecture between the two groups was evident after 6 weeks of age. Relatively minor differences were found in the part of the metaphysis near the growth plate and in the epiphysis, with less trabeculae in the primary spongiosa and 1 to 2 less trabeculae/mm in the secondary spongiosa. However, as metaphyseal growth proceeded, trabeculae were present for a greater distance up the femoral shaft in controls than in OVX rats, with mean BV/TV in the proximal part of the metaphysis increasing from 1.4% at 6 weeks to 13.4% at 20 weeks in controls, with no increase in the OVX rats. We find that the lack of ovarian hormones increases the rate of destruction of trabeculae near the metaphyseal-diaphyseal junction.
dc.description.statementofresponsibilityP. A. J. Baldock, H. A. Morris, R. J. Moore, A. G. Need, T. C. Durbridge
dc.identifier.citationCalcified Tissue International, 1998; 62(3):244-249
dc.identifier.doi10.1007/s002239900424
dc.identifier.issn0171-967X
dc.identifier.issn1432-0827
dc.identifier.orcidMorris, H. [0000-0002-2745-3750]
dc.identifier.urihttp://hdl.handle.net/2440/8717
dc.language.isoen
dc.publisherSPRINGER VERLAG
dc.rights© 1998 Springer-Verlag New York Inc.
dc.source.urihttps://doi.org/10.1007/s002239900424
dc.subjectRat
dc.subjectMetaphysis
dc.subjectGrowth
dc.subjectOophorectomy
dc.subjectOsteopenia.
dc.titlePrepubertal oophorectomy limits the accumulation of cancellous bone in the femur of growing rats with long-term effects on metaphyseal bone architecture
dc.typeJournal article
pubs.publication-statusPublished

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