Effects of isotretinoin on bone mineralization during routine therapy with isotretinoin for acne vulgaris.
OBJECTIVE: To examine the effects of isotretinoin on bone mineralization and other markers of calcium homeostasis in individuals receiving isotretinoin for routine therapy for severe acne vulgaris. DESIGN: Cohort study. SETTING: An academic medical center. PATIENTS: Twenty individuals receiving isotretinoin for severe acne vulgaris. INTERVENTION: None. MAIN OUTCOME MEASURE: The primary outcome was the change in bone mineralization as measured by dual-energy x-ray absorptiometry of the lumbar spine and hip before and after isotretinoin therapy. Additional measurements included serum osteocalcin, calcium, 25-dihydroxyvitamin D, 1,25-dihydroxyvitamin D, and intact parathyroid hormone and urine hydroxyproline or calcium. RESULTS: No changes were noted in bone mineralization of the lumbar spine or hip. Furthermore, no alterations were noted in serum measurements of osteocalcin, calcium, 25-dihydroxyvitamin D, intact parathyroid hormone, or urine measurements of hydroxyproline or calcium. A statistically significant change was noted in 1,25-dihydroxyvitamin D when serum from before and after isotretinoin therapy was compared. CONCLUSION: The use of isotretinoin for 20 weeks for the treatment of severe acne vulgaris does not appear to have any substantial adverse effect on bone mineralization.[1]References
- Effects of isotretinoin on bone mineralization during routine therapy with isotretinoin for acne vulgaris. Margolis, D.J., Attie, M., Leyden, J.J. Archives of dermatology. (1996) [Pubmed]
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