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Serum osteocalcin levels in primary hyperparathyroidism

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Summary

The serum levels of osteocalcin, a 49-amino-acid bone-matrix protein, have been found to be a specific biochemical parameter of bone formation. The aim of our study was to compare the sensitivity of serum osteocalcin levels with that of alkaline phosphatase in the evaluation of patients with primary hyperparathyroidism. In 40 patients with biochemically and histologically confirmed primary hyperparathyroidism, the serum levels of osteocalcin, intact parathyroid hormone, alkaline phosphatase, calcium, phosphorus, and creatinine were determined preoperatively. The serum levels of osteocalcin were elevated in 22 patients (55%), whereas the serum levels of alkaline phosphatase were increased in 18 patients (45%). In 10 patients (25%) the serum levels of osteocalcin, but not those of alkaline phosphatase, were increased, whereas in six patients the activity of alkaline phosphatase was high, but the serum osteocalcin levels were normal. When the biochemical data of the patients with increased serum osteocalcin levels were compared with those of the patients with serum osteocalcin levels within the normal range, the serum levels of intact parathyroid hormone and alkaline phosphatase were significantly increased in the group of patients with elevated serum osteocalcin levels. Our data indicate that serum osteocalcin levels might be a clinically useful additional parameter in the evaluation of patients with primary hyperparathyroidism.

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Abbreviations

AP:

Alkaline phosphatase

CA:

Calcium

CREA:

Creatinine

GLA:

Gamma-carboxy-glutamic acid

iPTH:

Intact parathyroid hormone

PH:

Phosphorus

OC:

Osteocalcin

PHPT:

Primary hyperparathyroidism

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Authors and Affiliations

  1. Ludwig Boltzmann Institut für Klinische Endokrinologie, Medizinische Universitätsklinik, Wien, Österreich

    P. Pietschmann, B. Niederle, A. Anvari & W. Woloszczuk

  2. Ludwig Boltzmann Institut für Klinische Endokrinologie, Chirurgische Universitätsklinik, Wien, Österreich

    P. Pietschmann, B. Niederle, A. Anvari & W. Woloszczuk

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  1. P. Pietschmann
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  2. B. Niederle
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  3. A. Anvari
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  4. W. Woloszczuk
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Pietschmann, P., Niederle, B., Anvari, A. et al. Serum osteocalcin levels in primary hyperparathyroidism. Klin Wochenschr 69, 351–353 (1991). https://doi.org/10.1007/BF02115782

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  • DOI: https://doi.org/10.1007/BF02115782

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