Structural and Cellular Differences between Metaphyseal and Diaphyseal Periosteum in Different-aged Rats

Fan, Wei, Crawford, Ross W., & Xiao, Yin (2008) Structural and Cellular Differences between Metaphyseal and Diaphyseal Periosteum in Different-aged Rats. Bone, 42(1), pp. 81-89.

View at publisher


Abstract In both physiological and pathological processes, periosteum plays a determinant role in bone formation and fracture healing. However, no specific report is available so far focusing on the detailed structural and major cellular differences between the periostea covering different bone surface in relation to ageing. The aim of this study is to compare the structural and cellular differences in diaphyseal and metaphyseal periostea in different-aged rats using histological and immunohistochemical methods. Four female Lewis rats from each group of juvenile (7-week old), mature (7-month old) and aged groups (2-year old) were sacrificed and the right femur of each rat was retrieved, fixed, decalcified and embedded. 5 µm thick serial sagittal sections were cut and stained with Hematoxylin and Eosin, Stro-1 (stem cell marker), F4/80 (macrophage marker), TRAP (osteoclast marker) and vWF (endothelial cell marker). 1mm lengths of middle diaphyseal and metaphyseal periosteum were selected for observation. The thickness, total cell number and positive cell number for each antibody were measured and compared in each periosteal area and different-aged groups. The results were subjected to two-way ANOVA and SNK tests. The results showed that the thickness and cell number in diaphyseal periosteum decreased with age (p<0.001). In comparison with diaphyseal area, the thickness and cell number in metaphyseal periosteum were much higher (p<0.001). There were no significant differences between the juvenile and aged groups in the thickness and cell number in the cambial layer of metaphyseal periosteum (p>0.05). However, the juvenile rats had more Stro1+, F4/80+ cells and blood vessels and fewer TRAP+ cells in different periosteal areas compared with other groups (p<0.001). The aged rats showed much fewer Stro1+ cells, but more F4/80+ ,TRAP+ cells and blood vessels in the cambial layer of metaphyseal periosteum (p<0.001). In conclusion, structure and cell population of periosteum appear to be both age-related and site-specific. The metaphyseal periosteum of aged rats seems more destructive than diaphyseal part and other age groups. Macrophages in the periosteum may play a dual important role in osteogenesis and osteoclastogenesis.

Impact and interest:

32 citations in Scopus
37 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

351 since deposited on 11 Sep 2007
7 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 9322
Item Type: Journal Article
Refereed: Yes
DOI: 10.1016/j.bone.2007.08.048
ISSN: 8756-3282
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2008 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 11 Sep 2007 00:00
Last Modified: 29 Feb 2012 13:45

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page