Abstract
Osteoporosis in men is less studied than in women. Few data concern biochemical bone turnover markers (BTM) in men and their potential use. We evaluated papers concerning BTM in men cited on Medline. Selection of studies were based on the number of subjects, age range, group homogeneity, follow-up duration, number of BTM. BTM levels are high in young men, then decrease with age. In elderly men, bone resorption increases with age more than bone formation. Variability of individual values is high and their significance is unclear. In elderly men, BTM levels correlate negatively with bone mineral density suggesting that accelerated bone turnover underlies age-related bone loss. Data on the prediction of accelerated bone loss and fractures by BTM in men are scant. Testosterone treatment induces a decrease in bone resorption followed by a decrease in bone formation. Bisphosphonates and calcitonin decrease BTM levels in osteoporotic men. Parathyroid hormone 1-34 and growth hormone induce a rapid increase in bone turnover followed by a progressive slowdown. Few studies concern BTM in men. Currently available data are not sufficient to suggest guidelines for the practical use of BTM in the clinical management of the osteoporosis in elderly men.
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