Monday, 24 April 2017

Identification of the Tidemark Line of Calcification in Osteoarthritic Cartilage Using a Stain for Alkaline Phosphatase

osteoarthritis
Inflammatory response and calcification are strongly implicated in osteoarthritis (OA) progression. Key inflammatory biomarkers present throughout the process of OA have been established but an association with calcification has not been clarified.

A faint line, tidemark, exists between the subchondral bone and the articular surface in knee joints that is presumed to be the line of demarcation between calcified and uncalcified cartilage.

This study shows that the tidemark is where calcification is actively occurring. Mouse knees (n=8) were stained for both Alkaline Phosphatase (ALP) and Safranin-O/Fast Green.

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