200 270

Cited 6 times in

A genetic association study of single nucleotide polymorphisms in FGFR1OP2/wit3.0 and long-term atrophy of edentulous mandible.

 Jaijam Suwanwela  ;  Jaehoon Lee  ;  Audrey Lin  ;  T. Cemal Ucer  ;  Hugh Devlin  ;  Janet Sinsheimer  ;  Neal R. Garrett  ;  Ichiro Nishimura 
 PLOS ONE, Vol.6(1) : e16204, 2011 
Journal Title
Issue Date
Aged ; Alleles ; Atrophy/genetics ; Genetic Association Studies* ; Genetic Markers ; Humans ; Jaw/pathology* ; Jaw, Edentulous/genetics* ; Mandible* ; Middle Aged ; Polymorphism, Single Nucleotide* ; Proto-Oncogene Proteins/genetics*
BACKGROUND: After dental extraction, the external surface of alveolar bone undergoes resorption at various rates, and a group of patients develop excessive jawbone atrophy. Oral mucosa overlying the atrophied jawbone is unusually thin; therefore, we have hypothesized that excessive jawbone atrophy may be associated with abnormal oral mucosa contraction. FGFR1OP2/wit3.0, a cytoskeleton molecule initially identified in oral wound fibroblasts, has been shown to induce oral mucosa contraction after dental extraction. This study examined the genetic association between single nucleotide polymorphisms (SNPs) of FGFR1OP2/wit3.0 and excessive atrophy of edentulous mandible. METHODS AND FINDINGS: First, the expression of FGFR1OP2/wit3.0 was determined in gingival tissues of 8 subjects before and after dental extraction. In situ hybridization revealed that all subject increased FGFR1OP2/wit3.0 expression in the post-operative oral mucosa tissues; however, significantly high levels of FGFR1OP2/wit3.0 were observed in 3 out of 8 subjects. In a separate study, 20 long-term edentulous subjects (66.4 ± 9.4 years) were recruited. Tag-SNPs in the FGFR1OP2/wit3.0 allele were determined by Taqman-based polymerase chain reaction. The mandibular bone height was determined following the American College of Prosthodontists (ACP) protocol. Subjects with minor allele of rs840869 or rs859024 were found in the highly atrophied group by the ACP classification (Chi square test, p = 0.0384 and p = 0.0565, respectively; Fisher's Exact, p= 0.0515 and p = 0.2604, respectively). The linear regression analysis indicated a suggestive association between rs859024 and the decreased bone heights (Mann-Whitney, p = 0.06). The average bone height of the subjects with rs840869 or rs859024 minor alleles (10.6 ± 3.2 mm and 9.6 ± 3.2 mm, respectively) was significantly smaller than that of those subjects with the major alleles (14.2 ± 4.5 mm, p<0.05). CONCLUSIONS: The patients with the minor allele of rs840869 or rs859024 were associated with excessive atrophy of edentulous mandible. This study may provide the basis for a genetic marker identifying susceptible individuals to develop jawbone atrophy after dental extraction.
Files in This Item:
T201100135.pdf Download
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Jae Hoon(이재훈) ORCID logo https://orcid.org/0000-0003-2281-8885
사서에게 알리기


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.