Papathanasiou I, Malizos K, Tsezou A. Bone morphogenetic protein-2-induced Wnt/?-catenin signaling pathway activation through enhanced low-density-lipoprotein receptor-related protein 5 catabolic activity contributes to hypertrophy in osteoarthritic chondrocytes. Arthritis Res Ther. 2012;14:R82 pubmed publisher