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Calcium and vitamin D metabolism in granulomatous diseases

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Summary

Overproduction of the active metabolite of vitamin D, 1,25-dihydroxyvitamin D (1,25(OH)2D) has been described in sarcoidosis and other granulomatous diseases. High circulating concentrations of 1,25(OH)2D lead to increased intestinal absorption of calcium, possibly to enhanced bone resorption, and may result in hypercalcaemia and/or hypercalciuria. Data obtained in vivo and in vitro demonstrated that the unregulated production of 1,25(OH)2D lies within the granulomatous tissue and is controlled by glucocorticoids. This abnormal production of 1,25(OH)2D seems to be a general phenomenon of granulomatous processes, which is not exceptional in sarcoidosis, but appears seldom in tuberculosis. These abnormalities, however, are not pathognomonic of granulomatous processes, since they have been described in other diseases such as lymphomas.

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  1. Department of Internal Medicine, Endocrinology and Metabolism, Brugmann University Hospital, Université Libre de Bruxelles, Place Van Gehuchten 4, 1020, Brussels, Belgium

    M. Fuss, T. Pepersack, C. Gillet, R. Karmali & J. Corvilain

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Fuss, M., Pepersack, T., Gillet, C. et al. Calcium and vitamin D metabolism in granulomatous diseases. Clin Rheumatol 11, 28–36 (1992). https://doi.org/10.1007/BF02207080

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