Role of the Nav1.7 R1150W amino acid change in susceptibility to symptomatic knee osteoarthritis and multiple regional pain

Autor: Frances L. Vaughn, Rose A. Maciewicz, Mark H. Edwards, Michael Doherty, Tim D. Spector, Ana M. Valdes, Karen A. Jameson, Evandine Rampersaud, Nigel K Arden, Sally Doherty, M Kassim Javaid, Weiya Zhang, Elaine M. Dennison, Paul E. Leaverton, Kenneth Muir, Cyrus Cooper
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Arthritis Care & Research; Vol
Popis: Objective: to assess the genetic association of pain in patients with knee osteoarthritis (OA) and those with multiple regional pain with the R1150W variant in the ?-subunit of the voltage-gated sodium channel Na(V)1.7. Methods: knee OA patients from 2 UK cohorts (1,411 from the Genetics of Osteoarthritis and Lifestyle study and 267 from the Hertfordshire Cohort Study; 74% with symptomatic OA) with Western Ontario and McMaster Universities OA Index (WOMAC) pain scores were genotyped for rs6746030 (encoding the R1150W change). One hundred seventy-six knee OA patients (53% symptomatic) from the Clearwater Osteoarthritis Study were also tested. A total of 4,295 samples (both affected and unaffected OA) from all 3 studies with data on multiple regional pain were tested. Fixed-effects meta-analyses were carried out with the WOMAC, symptomatic OA (adjusting for radiographic severity), and multiple regional pain as outcomes. Results: no association with the WOMAC was seen in the UK cohorts. Overall, the meta-analysis of WOMAC yielded a summary statistic of ? = 0.47 (95% confidence interval [95% CI] 0.04, 0.89; P = 0.030) for the variant allele. The meta-analysis of symptomatic versus asymptomatic OA did not demonstrate an association with rs6746030 (odds ratio [OR] 0.90 [95% CI 0.71, 1.15], P = 0.38). The meta-analysis of multiple regional pain resulted in a significant OR of 1.40 (95% CI 1.08, 1.80; P = 0.0085). No interstudy heterogeneity was seen for any of the analyses. Conclusion: we find evidence that the R1150W amino acid change in the Na(V)1.7 ?-chain is associated with multiple regional pain. This variant is confirmed to be involved in genetic susceptibility to pain, but it does not appear to have a major role in OA-specific pain
Databáze: OpenAIRE