Summary
A patient showed evident osteolysis in phalanges and heavy periarticular calcium deposits of the fingers, wrists and toes which avidly took up47Ca.
The dense, white, tooth-paste like fluid contained in the periarticular calcium deposits has been studied by two different X-ray diffraction methods, by Ubatuba's bioassay for prostaglandin, by thin layer chromatography and by mass spectrometry. The calcium deposits were hydroxyapatite and prostaglandin PGE2 was detected in them.
The bone resorption stimulating activity of PGE2 would be expected to result in increased bone destruction with release of calcium salts and this could be a working hypothesis of the pathogenesis of calcinosis circumscripta.
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Caniggia, A., Gennari, C., Vattimo, A. et al. Prostaglandin PGE2: A possible mechanism for bone destruction in calcinosis circumscripta. Calc. Tis Res. 25, 53–57 (1978). https://doi.org/10.1007/BF02010751
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DOI: https://doi.org/10.1007/BF02010751