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Neutrophil function in hypothyroid patients

J Palmblad, U Adamson, U Rosenqvist

    Acta Medica Scandinavica
    |January 1, 1981
    PubMed
    Summary
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    Hypothyroidism impairs polymorphonuclear (PMN) granulocyte function, specifically reducing their ability to kill bacteria. Levothyroxine therapy normalized this function in hypothyroid patients, suggesting improved immune response.

    Area of Science:

    • Immunology
    • Endocrinology

    Background:

    • Hypothyroidism is linked to increased infection susceptibility.
    • Previous studies noted decreased leukocyte heat production in hypothyroidism.

    Purpose of the Study:

    • To investigate in vitro polymorphonuclear (PMN) granulocyte functions in hypothyroid patients.
    • To determine if levothyroxine therapy corrects impaired PMN functions.

    Main Methods:

    • Assessed PMN bactericidal capacity against Staph. aureus in hypothyroid patients and controls.
    • Evaluated PMN adherence, chemiluminescence, and migration during phagocytosis.
    • Monitored PMN functions before and after levothyroxine therapy.

    Main Results:

    • 9 of 17 hypothyroid patients showed decreased PMN ability to kill Staph. aureus.

    Related Experiment Videos

  • PMN bactericidal capacity normalized after levothyroxine therapy.
  • PMN adherence transiently decreased post-therapy; migration and chemiluminescence remained normal.

    • Conclusions:

    • Impaired PMN bactericidal capacity in hypothyroidism may increase susceptibility to certain infections.
    • Levothyroxine treatment effectively restores PMN function in hypothyroid patients.