title: Crystal deposition and osteoarthritis.
abstract: Calcium-containing crystals are commonly found in osteoarthritic (OA) joints. Although most often found in advanced OA, some calcium pyrophosphate dihydrate and apatite can be present in early stages. These crystals could be factors in pathogenesis of OA and even more likely in the progression of disease. Calcium pyrophosphate dihydrate apatites and other calcium phosphates can be mitogenic, can stimulate the release of metalloproteases, and might have mechanical abrasive effects.
authors: Veterans Administration Medical Center, Arthritis Research Center, Room 151K, University & Woodland Avenue, Philadelphia, PA 19104, USA.
authors: N
authors: N
authors: Olmez
authors: H R
authors: HR
authors: Schumacher
mesh_terms: D000368:Aged; D002114:Calcinosis / Q000150:complications* / Q000175:diagnosis; D002130:Calcium Phosphates / Q000378:metabolism*; D002131:Calcium Pyrophosphate / Q000378:metabolism; D002805:Chondrocalcinosis / Q000175:diagnosis / Q000209:etiology*; D003460:Crystallization; D017886:Durapatite / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000209:etiology* / Q000378:metabolism*; D011379:Prognosis; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index
chemical_list: D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; D017886:Durapatite; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous; D002131:Calcium Pyrophosphate