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Plasma neuropeptides in hyperthyroidism.

E M Erfurth1, R Ekman, B Ahrén

  • 1Department of Internal Medicine, Lund University, Sweden.

Thyroidology
|August 1, 1990
PubMed
Summary
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Hyperthyroidism elevates calcitonin gene-related peptide (CGRP) levels. Treatment normalizes CGRP and transiently increases neuropeptide Y (NPY), with NPY returning to baseline. Neurotensin levels also decline during treatment.

Area of Science:

  • Endocrinology
  • Neuroendocrinology
  • Neuropeptide Research

Background:

  • Hyperthyroidism is associated with altered physiological states.
  • Neuropeptides play crucial roles in various bodily functions.
  • Understanding neuropeptide dynamics in hyperthyroidism is important for metabolic and neurological insights.

Purpose of the Study:

  • To investigate plasma neuropeptide levels in hyperthyroid patients.
  • To assess changes in neuropeptides during hyperthyroidism treatment.
  • To compare neuropeptide profiles with healthy controls.

Main Methods:

  • Plasma levels of VIP, NPY, CGRP, substance P, and galanin were measured.
  • 15 hyperthyroid patients were studied before and during 38 weeks of treatment.

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  • Treatment modalities included radioactive iodine, carbimazole, or surgery.
  • A control group of 9 premenopausal women was included.

    • Main Results:

    • Hyperthyroid patients had higher baseline CGRP levels than controls.
    • NPY levels transiently increased after 11 weeks of treatment.
    • CGRP levels significantly decreased during treatment.
    • Neurotensin levels showed a gradual decline throughout treatment.

    Conclusions:

    • Hyperthyroidism is linked to elevated CGRP.
    • Treatment effectively reduces CGRP levels.
    • Neuropeptide Y and neurotensin levels are modulated by hyperthyroidism treatment.
    • VIP, substance P, and galanin levels remain unchanged.