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Journal of Nucleic Acids
Volume 2017, Article ID 3138254, 11 pages
https://doi.org/10.1155/2017/3138254
Research Article

Expression of Genes and Their Polymorphism Influences the Risk of Knee Osteoarthritis

1Centre for Advanced Research, King George’s Medical University, Lucknow, India
2Department of Orthopaedic Surgery, King George’s Medical University, Lucknow, India
3Department of Orthopaedic Surgery, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
4Developmental Toxicology Division, Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
5Department of Prosthodontics, King George’s Medical University, Lucknow, India

Correspondence should be addressed to Abhishek Mishra; moc.liamg@3011arhsimihba

Received 4 July 2017; Accepted 27 August 2017; Published 9 October 2017

Academic Editor: Ben Berkhout

Copyright © 2017 Abhishek Mishra 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.

Abstract

Introduction. Genetic factors including the level of expression of the fingerprint of genes involved in the development of bones and cartilage such as GDF-5 or ESR-α or CALM-1 are known to be strong determinants of the osteoarthritis (OA) in Caucasian and Oriental populations. Because of high prevalence of OA in Indian population and availability of limited genetic data, we determined whether similar genetic factors are involved in Indians as well. Methods. A case control study was carried out involving 500 patients of knee OA and equal number of healthy controls. Genotyping analyses in whole blood, mRNA, and protein expressions in peripheral blood lymphocytes (PBLs) were performed using established protocols. Results. Our results showed a significantly decreased level of mRNA and protein expressions for GDF-5, ESR-α, and CALM-1 genes in PBLs of OA cases when compared to healthy controls. The frequency of variant genotypes of these genes was also increased significantly in cases of OA compared to controls. Conclusion. Our results demonstrated that the decrease in expression of GDF-5, ESR-α, and CALM-1 in PBLs and association of polymorphism in these genes may be important in predicting the severity and thereby the progression of OA in Indian population.