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Journal of Biomedicine and Biotechnology
Volume 2012, Article ID 597637, 5 pages
Research Article

The Effect of Bradykinin B2 Receptor Polymorphisms on the Susceptibility and Severity of Osteoarthritis in a Chinese Cohort

Department of Orthopedics Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, China

Received 13 April 2012; Accepted 12 June 2012

Academic Editor: Thomas Liehr

Copyright © 2012 Shuo Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. The B2-bradykinin receptor (BDKRB2) has been reported to associate with onset and development of Osteoarthritis (OA); however, the role of BDKRB2 genetic polymorphisms in OA remains unknown. Method. A total of 245 patients with primary knee OA and 264 healthy volunteer were recruited. BDKRB2 gene polymorphisms, −58T/C and +9/−9 bp polymorphisms, were genotyped. Results. The genotype distributions and allele frequencies of +9/−9 bp polymorphisms significantly differed between OA and control subjects. Logistic regression analysis showed carriers with −9/−9 genotype had a significantly increased risk for knee OA compared with the +9/+9 genotype (adjusted , ). The OR for −9 allele carriage was significantly higher than +9 allele carriage (adjusted , ). The +9/−9 bp polymorphisms also determined the OA radiographic severity. The presence of −9 bp was associated with severer OA. The −58T/C polymorphisms did not affect OA risk and severity. Conclusion. The +9/−9 bp polymorphisms of BDKRB2 gene may be used as a genetic marker for the susceptibility and severity of OA.