• Clinical rheumatology · Feb 2007

    Comparative Study Clinical Trial

    Comparison of the effect of alendronate on lumbar bone mineral density and bone turnover in men and postmenopausal women with osteoporosis.

    • Jun Iwamoto, Tsuyoshi Takeda, Yoshihiro Sato, and Mitsuyoshi Uzawa.
    • Department of Sports Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. jiwamoto@sc.itc.keio.ac.jp
    • Clin. Rheumatol. 2007 Feb 1; 26 (2): 161-7.

    AbstractThe purpose of the present study was to compare the effect of alendronate treatment on lumbar bone mineral density (BMD) and bone turnover in men and postmenopausal women with osteoporosis. Sixty men with primary or secondary osteoporosis and 318 women with postmenopausal osteoporosis were treated with alendronate. The primary end points were lumbar BMD and urinary cross-linked N-terminal telopeptides of type I collagen (NTX) and serum alkaline phosphatase (ALP) levels. The secondary end point was the incidence of vertebral and nonvertebral fractures. Forty-seven (78.3%) men and 254 (79.9%) women who could complete the 12-month trial were analyzed. The mean ages of men and postmenopausal women were 69.1 and 70.4 years, respectively. Both men and postmenopausal women showed higher levels of urinary NTX as compared with normal range of premenopausal women. Alendronate treatment decreased urinary NTX level by 39.2% in men and 45.4% in postmenopausal women at 3 months and serum ALP level by 17.8 and 21.0%, respectively, at 12 months. Following reduction in bone turnover markers, lumbar BMD increased 5.8 and 7.6% in men and postmenopausal women, respectively, at 12 months. Reduction in urinary NTX level and increase in lumbar BMD were smaller in men than in postmenopausal women. The incidence of vertebral and nonvertebral fractures was 10.6 and 8.5%, respectively, in men and 8.3 and 7.5%, respectively, in postmenopausal women, with no significant difference in these incidences between them. These results suggested that alendronate treatment effectively increased lumbar BMD from baseline in men with primary or secondary osteoporosis following reduction in bone turnover, although its efficacy did not appear to be greater than in postmenopausal women with osteoporosis.

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