alexa The isolation and characterization of magnesium whitlockite crystals from human articular cartilage.
Orthopaedics

Orthopaedics

Journal of Arthritis

Author(s): Colin A Scotchford

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A number of basic calcium phosphate crystals have been demonstrated in human articular tissues. The exact relationship between crystal deposition and disease remains obscure, although there is evidence supporting a rapid degenerative arthropathy within a specific set of patients. Limited reports of 'cuboid' calcium phosphate microcrystals in articular cartilage have been made over the last 10 years. In this study the occurrence of such crystals, not apparent by light microscopy, in human articular cartilage has been confirmed by transmission electron microscopy and X-ray microanalysis of tissue prepared by aqueous and anhydrous processing techniques. A crystal isolation technique involving collagenase digestion, centrifugation and sodium hypochlorite treatment was developed enabling crystal characterization by electron and X-ray diffraction. Crystals were identified as magnesium whitlockite; the first report of this mineral in articular cartilage. The presence of this mineral phase in normal and osteoarthritic articular cartilage is discussed with consideration given to physical conditions known to favor whitlockite formation and those extant in articular cartilage.

This article was published in Osteoarthritis Cartilage and referenced in Journal of Arthritis

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