A gene expression study of normal and damaged cartilage in anteromedial gonarthrosis, a phenotype of osteoarthritis

Osteoarthritis and Cartilage
S SnellingA J Price

Abstract

To identify osteoarthritis (OA) relevant genes and pathways in damaged and undamaged cartilage isolated from the knees of patients with anteromedial gonarthrosis (AMG) - a specific form of knee OA. Cartilage was obtained from nine patients undergoing unicompartmental knee replacement (UKR) for AMG. AMG provides a spatial representation of OA progression; showing a reproducible and histologically validated pattern of cartilage destruction such that damaged and undamaged cartilage from within the same knee can be consistently isolated and examined. Gene expression was analysed by microarray and validated using real-time PCR. Damaged and undamaged cartilage showed distinct gene expression profiles. 754 genes showed significant up- or down-regulation (non-False discovery rate (FDR) P < 0.05) with enrichment for genes involved in cell signalling, Extracellular Matrix (ECM) and inflammatory response. A number of genes previously unreported in OA showed strongly altered expression including RARRES3, ADAMTSL2 and DUSP10. Confirmation of genes previously identified as modulated in OA was also obtained e.g., SFRP3, MMP3 and IGF1. This is the first study to examine a common and consistent phenotype of OA to allow direct comparison of dama...Continue Reading

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Citations

Dec 22, 2015·Osteoarthritis and Cartilage·Sarah J B SnellingIan M Clark
Mar 29, 2016·Chronobiology International·Sarah Jb SnellingRaewyn C Poulsen
Aug 21, 2015·BMC Musculoskeletal Disorders·Ryota ChijimatsuHideki Yoshikawa
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Methods Mentioned

BETA
Feature Extraction
PCR

Software Mentioned

Ingenuity
GeneSpring GX10
PASW Statistics
Webgestalt
Agilent Feature Extraction
DAVID

Related Concepts

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