Glucocorticoid-induced osteoporosis in patients with sarcoidosis
Abstract
BACKGROUND: Patients with sarcoidosis are at risk for osteoporosis caused by glucocorticoid therapy. However, because of potential hypercalciuria and hypercalcemia, the usual conservative treatment for low bone mass, calcium and vitamin D supplements, may not be well tolerated.
METHODS: Patients with sarcoidosis referred to a metabolic bone clinic were compared with other sarcoidosis patients studied prospectively and patients with chronic obstructive pulmonary disease (COPD) or asthma. The subjects underwent bone mineral density (BMD) testing, and the sarcoidosis patients underwent mobility testing and measurements of serum and urine chemistries, vitamin D levels, bone turnover markers, and sex hormone levels.
RESULTS: The subjects were mostly male African Americans in the 6th decade of life. Many took chronic oral glucocorticoid therapy and often used home oxygen therapy. Low hip BMD was common among the referred group, comparable with patients with COPD. Surprisingly, hypercalciuria and hypercalcemia were uncommon, and serum testosterone levels were frequently low. The use of calcium supplements, multivitamins containing vitamin D, and glucocorticoids had no impact on serum or urine calcium levels. From univariate analysis, potential risk factors for low hip BMD were low weight, low body mass index (BMI), advanced age, and current use of glucocorticoids. However, in stepwise multiple regression analysis, only low BMI predicted about 40% of hip BMD.
CONCLUSIONS: Despite…
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Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.
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