OBJECTIVE: Several genome-wide scans have revealed an osteoarthritis (OA)-susceptibility locus on chromosome 11q in close proximity to the low-density lipoprotein receptor-related protein 5 (LRP5) gene. The regulation of bone mass is under the control of LRP5 and since increased bone mass is thought to play a role in the pathology of OA we examined LRP5 polymorphisms and haplotypes to determine if variants of this locus may predispose to OA. METHODS: A UK control population of 187 individuals was examined for five commonly occurring polymorphisms against a cohort of 158 DNAs from patients with knee OA. An additional UK cohort was also examined to confirm the findings of the first study; this second group consisted of 110 knee OA patients. Haplotype analysis was also performed on patient and control DNAs. RESULTS: A study of individual polymorphisms revealed no association with disease. However, haplotype analysis of the initial two populations revealed a common haplotype (C-G-C-C-A) that provided a 1.6-fold increased risk of OA (P(c)=0.021). The data obtained from the second cohort confirmed the initial findings, with a 1.6-fold increased risk observed within this cohort for the risk haplotype (P=0.012). CONCLUSIONS: A closer investigation of LRP5 and associated Wnt signalling molecules in OA will help determine disease aetiology and the development of novel treatment strategies that specifically target the bone compartment.
OBJECTIVE: Several genome-wide scans have revealed an osteoarthritis (OA)-susceptibility locus on chromosome 11q in close proximity to the low-density lipoprotein receptor-related protein 5 (LRP5) gene. The regulation of bone mass is under the control of LRP5 and since increased bone mass is thought to play a role in the pathology of OA we examined LRP5 polymorphisms and haplotypes to determine if variants of this locus may predispose to OA. METHODS: A UK control population of 187 individuals was examined for five commonly occurring polymorphisms against a cohort of 158 DNAs from patients with knee OA. An additional UK cohort was also examined to confirm the findings of the first study; this second group consisted of 110 knee OA patients. Haplotype analysis was also performed on patient and control DNAs. RESULTS: A study of individual polymorphisms revealed no association with disease. However, haplotype analysis of the initial two populations revealed a common haplotype (C-G-C-C-A) that provided a 1.6-fold increased risk of OA (P(c)=0.021). The data obtained from the second cohort confirmed the initial findings, with a 1.6-fold increased risk observed within this cohort for the risk haplotype (P=0.012). CONCLUSIONS: A closer investigation of LRP5 and associated Wnt signalling molecules in OA will help determine disease aetiology and the development of novel treatment strategies that specifically target the bone compartment.
Authors: Matlock A Jeffries; Madison Donica; Lyle W Baker; Michael E Stevenson; Anand C Annan; Mary Beth Humphrey; Judith A James; Amr H Sawalha Journal: Arthritis Rheumatol Date: 2016-06 Impact factor: 10.995
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Authors: J Velasco; M T Zarrabeitia; J R Prieto; J L Perez-Castrillon; M D Perez-Aguilar; M I Perez-Nuñez; C Sañudo; J Hernandez-Elena; I Calvo; F Ortiz; J Gonzalez-Macias; J A Riancho Journal: Osteoporos Int Date: 2009-04-17 Impact factor: 4.507
Authors: Sarah A Hardcastle; Celia L Gregson; Kevin C Deere; George Davey Smith; Paul Dieppe; Jon H Tobias Journal: Rheumatology (Oxford) Date: 2013-01-28 Impact factor: 7.580