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Exercise enhances angiogenesis during bone defect healing in mice.
MedLine Citation:
PMID:  21259340     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of the present study was to investigate the effect of exercise on angiogenesis during bone defect healing in mice. We evaluated angiogenesis during cranial bone defect healing by intravital fluorescence microscopy (IVM) at days 0-21. To characterize the type of bone repair, we performed additional histomorphometric analyses at days 3-15. IVM was conducted in mice, which were housed in cages supplied with running wheels (exercise group; n = 7) and compared to IVM results of mice, which were housed in cages without running wheels (controls; n = 7). In the exercise group, we additionally performed correlation analyses between results of the IVM and the running distance. IVM showed an accelerated decrease of bone defect area in the exercise group compared to the control group. This was associated with a significantly higher blood vessel diameter in animals undergoing exercise at days 9 and 12 and a significant correlation between running distance and blood vessel density at day 9 (r = 0.74). Histomorphometry showed osseous bridging of the defect at day 9. The newly woven bone was covered by a neo-periosteum containing those blood vessels, which were visible by IVM. We conclude that exercise accelerates bone defect healing and stimulates angiogenesis during bore repair. © 2011 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 9999:XX-XX, XXXX.
Authors:
Joerg H Holstein; Steven C Becker; Martin Fiedler; Claudia Scheuer; Patric Garcia; Tina Histing; Moritz Klein; Tim Pohlemann; Michael D Menger
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-1-21
Journal Detail:
Title:  Journal of orthopaedic research : official publication of the Orthopaedic Research Society     Volume:  -     ISSN:  1554-527X     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-1-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8404726     Medline TA:  J Orthop Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Orthopaedic Research Society.
Affiliation:
Department of Trauma, Hand and Reconstructive Surgery, University of Saarland, D-66421 Homburg/Saar, Germany; Institute for Clinical and Experimental Surgery, University of Saarland, Homburg/Saar, Germany; Collaborative Research Center AO Foundation, University of Saarland, Homburg/Saar, Germany. joerg.holstein@uks.eu.
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