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Article: Expression of bone morphogenetic protein, vascular endothelial growth factor, and basic fibroblast growth factor in irradiated mandibles during distraction osteogenesis

TitleExpression of bone morphogenetic protein, vascular endothelial growth factor, and basic fibroblast growth factor in irradiated mandibles during distraction osteogenesis
Authors
Issue Date2011
PublisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/joms
Citation
Journal Of Oral And Maxillofacial Surgery, 2011, v. 69 n. 11, p. 2860-2871 How to Cite?
Abstract
Purpose: The present study evaluated the expression of bone morphogenetic proteins (BMPs)-2, -4, -7, vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) in irradiated mandibles during distraction osteogenesis. Materials and Methods: A total of 24 rabbits were randomly assigned to the control and experimental groups. Each rabbit in the experimental group underwent preoperative radiation to 9 Gy in 5 fractions. After 1 month, all rabbits underwent osteotomy and distraction osteogenesis with 7 days of latency. Three rabbits in the control and experimental groups were killed at day 7 (end of the latency period), day 12 (middle of active distraction), day 18 (end of active distraction), and day 25 (1 week after consolidation). The specimens were used for immunohistochemical staining and real-time polymerase chain reaction analysis. Results: Histologically, at day 25, cortical bone formation was much better in the control group than in the radiotherapy group. In the radiotherapy group, the bone spicules were aligned in the direction of tension stress. At day 12, the expression of BMP-2, -4, and -7 was elevated in the radiotherapy group compared with the control group. At day 25, the expression of BMP-2 was significantly greater in the radiotherapy group. At day 7, the expression of bFGF was significantly suppressed in the radiotherapy group. At day 12, the expression of bFGF and VEGF was significantly elevated in the radiotherapy group compared with the control group. At day 25, the expression of VEGF was significantly greater in the radiotherapy group. Conclusions: The results of our study have shown that radiotherapy changes the expression pattern of BMPs, VEGF, and bFGF. © 2011 American Association of Oral and Maxillofacial Surgeons.
Persistent Identifierhttp://hdl.handle.net/10722/134985
ISSN
2013 Impact Factor: 1.280
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong
Funding Information:

This study was supported by a small project fund from the University of Hong Kong.

References

 

Author Affiliations
  1. The University of Hong Kong Li Ka Shing Faculty of Medicine
  2. The University of Hong Kong
DC FieldValueLanguage
dc.contributor.authorZhang, WBen_HK
dc.contributor.authorZheng, LWen_HK
dc.contributor.authorChua, DTTen_HK
dc.contributor.authorCheung, LKen_HK
dc.date.accessioned2011-07-27T01:25:21Z-
dc.date.available2011-07-27T01:25:21Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Oral And Maxillofacial Surgery, 2011, v. 69 n. 11, p. 2860-2871en_HK
dc.identifier.issn0278-2391en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134985-
dc.description.abstractPurpose: The present study evaluated the expression of bone morphogenetic proteins (BMPs)-2, -4, -7, vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) in irradiated mandibles during distraction osteogenesis. Materials and Methods: A total of 24 rabbits were randomly assigned to the control and experimental groups. Each rabbit in the experimental group underwent preoperative radiation to 9 Gy in 5 fractions. After 1 month, all rabbits underwent osteotomy and distraction osteogenesis with 7 days of latency. Three rabbits in the control and experimental groups were killed at day 7 (end of the latency period), day 12 (middle of active distraction), day 18 (end of active distraction), and day 25 (1 week after consolidation). The specimens were used for immunohistochemical staining and real-time polymerase chain reaction analysis. Results: Histologically, at day 25, cortical bone formation was much better in the control group than in the radiotherapy group. In the radiotherapy group, the bone spicules were aligned in the direction of tension stress. At day 12, the expression of BMP-2, -4, and -7 was elevated in the radiotherapy group compared with the control group. At day 25, the expression of BMP-2 was significantly greater in the radiotherapy group. At day 7, the expression of bFGF was significantly suppressed in the radiotherapy group. At day 12, the expression of bFGF and VEGF was significantly elevated in the radiotherapy group compared with the control group. At day 25, the expression of VEGF was significantly greater in the radiotherapy group. Conclusions: The results of our study have shown that radiotherapy changes the expression pattern of BMPs, VEGF, and bFGF. © 2011 American Association of Oral and Maxillofacial Surgeons.en_HK
dc.languageengen_US
dc.publisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/jomsen_HK
dc.relation.ispartofJournal of Oral and Maxillofacial Surgeryen_HK
dc.subject.meshBone Morphogenetic Proteins - *analysis - radiation effects-
dc.subject.meshFibroblast Growth Factor 2 - *analysis - radiation effects-
dc.subject.meshMandible - *radiation effects - surgery-
dc.subject.meshOsteogenesis, Distraction-
dc.subject.meshVascular Endothelial Growth Factor A - analysis - radiation effects-
dc.titleExpression of bone morphogenetic protein, vascular endothelial growth factor, and basic fibroblast growth factor in irradiated mandibles during distraction osteogenesisen_HK
dc.typeArticleen_HK
dc.identifier.emailZheng, LW: lwzheng@hku.hken_HK
dc.identifier.emailChua, DTT: dttchua@hkucc.hku.hken_HK
dc.identifier.emailCheung, LK: lkcheung@hkucc.hku.hken_HK
dc.identifier.authorityZheng, LW=rp01411en_HK
dc.identifier.authorityChua, DTT=rp00415en_HK
dc.identifier.authorityCheung, LK=rp00013en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.joms.2010.12.037en_HK
dc.identifier.pmid21741143en_HK
dc.identifier.scopuseid_2-s2.0-80054939289en_HK
dc.identifier.hkuros188020en_US
dc.identifier.hkuros210168-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80054939289&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume69en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2860en_HK
dc.identifier.epage2871en_HK
dc.identifier.isiWOS:000297138000033-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhang, WB=37022069200en_HK
dc.identifier.scopusauthoridZheng, LW=11241247300en_HK
dc.identifier.scopusauthoridChua, DTT=7006773480en_HK
dc.identifier.scopusauthoridCheung, LK=7102302747en_HK

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