Non-invasive quantitative estimation of bone density in rats throughout the life cycle and in arthritic osteopenia: preliminary results

del Pozo, E; Gubler, H U; Perrelet, Romain; Hager, T; Wiederhold, K H (1988). Non-invasive quantitative estimation of bone density in rats throughout the life cycle and in arthritic osteopenia: preliminary results. Hormone and metabolic research, 20(10), pp. 630-2. Stuttgart: Thieme 10.1055/s-2007-1010902

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A longitudinal bone survey was conducted in 86 female Wistar rats in order to assess mineral density kinetics from young age (5 weeks: 115 g) till late adulthood (64 weeks: 586 g). In vivo quantitative radiographic scanning was performed on the caudal vertebrae, taking trabecular mass as the parameter. Measurements were expressed as Relative Optical Density (ROD) units by means of a high resolution densitometric device. Results showed a progressive increase in mineral density throughout the life cycle, with a tendency to level in the higher weight range, indicating that progressive mineral aposition occurs in rats in dependency of age. This phenomenon, however, should be always considered within the context of continuous skeletal growth and related changes typical of this species. Twelve different animals were also examined following induction of articular inflammation with Freund's adjuvant in six of them. Bone survey conducted 12 to 18 days after inoculation revealed a significant (P less than 0.01) reduction in trabecular bone mass of scanned vertebrae in comparison with the weight-matched untreated controls. It is concluded that the in vivo quantitative assessment of bone density illustrated in this report represents a sensitive and useful tool for the long-term survey of naturally occurring or experimentally induced bone changes. Scanning of the same part of the skeleton can be repeated, thereby avoiding sacrifice of the animal and time-consuming preparation of post-mortem material.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Osteoporosis
UniBE Contributor:	Perrelet, Romain
Subjects:	600 Technology > 610 Medicine & health
ISSN:	0018-5043
Publisher:	Thieme
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:24
Last Modified:	05 Dec 2022 14:26
Publisher DOI:	10.1055/s-2007-1010902
PubMed ID:	3220446
Web of Science ID:	A1988Q796600007
URI:	https://boris.unibe.ch/id/eprint/37841 (FactScience: 212002)