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Related Experiment Videos

Osteoporosis in hyperthyroidism estimated by photon absorptiometry.

J Linde, T Friis

    Acta Endocrinologica
    |July 1, 1979
    PubMed
    Summary
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    Hyperthyroidism is linked to lower bone density, particularly in women. Treatment with carbimazole significantly improves bone density in hyperthyroid patients, normalizing levels over time.

    Area of Science:

    • Endocrinology
    • Bone Metabolism
    • Internal Medicine

    Background:

    • Hyperthyroidism is associated with altered bone metabolism.
    • Osteoporosis is a potential complication of untreated hyperthyroidism.
    • The impact of hyperthyroidism on bone density and its reversibility with treatment requires further investigation.

    Purpose of the Study:

    • To assess bone density in hyperthyroid patients before and during carbimazole treatment.
    • To evaluate biochemical markers of bone metabolism in hyperthyroidism.
    • To determine the correlation between disease parameters and bone density changes.

    Main Methods:

    • Photon absorption technique used to measure bone mineral density of the forearm and calcaneus.
    • Serum levels of total calcium, ionized calcium, phosphorus, and alkaline phosphatase were analyzed.

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  • A cohort of 96 untreated hyperthyroid patients and 157 controls were studied, with 79 patients followed during treatment.

    • Main Results:

    • Untreated hyperthyroid patients exhibited lower bone density compared to controls, significant in women.
    • Carbimazole treatment led to a significant increase in bone density, normalizing levels within 6 months to 3 years.
    • Biochemical changes included elevated serum alkaline phosphatase, total calcium, and ionized calcium; serum phosphorus remained unchanged.

    Conclusions:

    • Hyperthyroidism negatively impacts bone density, with significant reversibility upon treatment with carbimazole.
    • Elevated alkaline phosphatase correlates with decreased bone density in hyperthyroid patients.
    • Bone density normalizes with sustained carbimazole therapy, suggesting effective management of osteoporosis in hyperthyroidism.