Medical Case Reports

Association of Vitamin D Repletion with Normalization of Elevated Serum 17-OH-Progesterone

Insulin resistance is associated with a number of conditions, such as non-classic 21-hydroxylase deficiency and allied disorders. Serum vitamin D is often deficient/ insufficient in insulin resistant individuals. Disorders associated with insulin resistance are often mitigated in association with vitamin D repletion. Here we report a patient with type 2 diabetes mellitus, lower extremity infection, vitamin D insufficiency, and elevated unstimulated serum 17-OH-progesterone (17-OHP), which normalized during vitamin D repletion. Serum 25-OHvitamin D (25-OHD) rose by 32% while serum 17-OHP fell by 87% over the course of four weeks receiving 50,000 IU ergocalciferol orally weekly. Vitamin D repletion in this setting restored normal serum 25-OHD levels and was associated with normalization of elevated serum 17-OHP. Serum 25-OHD levels should be determined before commencing glucocorticoids or mineralocorticoids for the treatment of elevated serum 17-OHP in disorders like non-classic adrenal hyperplasia (NCAH) and levels of 17- OHP, should be re-measured when vitamin D levels are replete to determine whether glucocorticoid/ mineralocorticoid replacement is actually necessary.

Author(s):

Gabriel Fenteany, Taiga Inoue, Gul Bahtiyar and Alan S Sacerdote

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