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  • Title: Characteristics of biochemical markers in patients with metabolic bone disorders.
    Author: Hoshino H, Kushida K, Takahashi M, Kawana K, Denda M, Yamazaki K, Inoue T.
    Journal: Endocr Res; 1998 Feb; 24(1):55-64. PubMed ID: 9553754.
    Abstract:
    Biochemical markers of bone turnover are expected to have some different characteristics among bone metabolic disorders. We compared bone formation markers: serum total alkaline phosphatase (s-Alp), serum osteocalcin (s-OC) and serum carboxy-terminal propeptide of type I collagen (s-PICP); and bone resorption markers: serum carboxy-terminal telopeptide of type I collagen (s-ICTP), urinary pyridinoline (u-Pyr) and urinary deoxypyridinoline (u-Dpyr) to examine which marker is the most suitable and reliable to evaluate bone turnover in patients with osteoporosis (n = 29), osteomalacia (n = 10), primary hyperparathyroidism (n = 6) and renal osteodystrophy (n = 21). The value of s-Alp in the osteomalacia group was significantly higher than those in the normal control group and the osteoporosis group (p < 0.001), and T-score of s-Alp was significantly higher than those of s-OC and s-PICP in the osteomalacia group. The values of u-Pyr and u-Dpyr in the primary hyperparathyroidism group were significantly higher than those in the other groups (p < 0.001). S-PICP, which are not dependent upon renal function, was much higher in the renal osteodystrophy group than in all other groups. In the osteoporosis group, T-score of s-ICTP was significantly higher than those of s-OC. Thus, s-Alp was a good marker in osteomalacia, u-Pyr and u-Dpyr in primary hyperparathyroidism, s-PICP in renal osteodystrophy, and s-ICTP in osteoporosis.
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