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Related Experiment Videos

Elastase inhibitory activity in serum of patients with thyroid dysfunction.

J Wortsman1, L Y Matsuoka, F Kueppers

  • 1Department of Medicine, Southern Illinois University, Springfield 62794-9230.

Clinical Chemistry
|January 1, 1991
PubMed
Summary

Serum elastase inhibitory activity, including alpha 1-antitrypsin (A-1-AT), is elevated in hyperthyroidism. This finding correlates with free thyroxine levels, suggesting a link between thyroid function and skin health.

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Area of Science:

  • Endocrinology
  • Dermatology
  • Biochemistry

Background:

  • Myxedema, a condition associated with hypothyroidism, involves skin abnormalities like dermal elastic fiber fragmentation.
  • Elastic fiber integrity is crucial for skin health and function.

Purpose of the Study:

  • To investigate serum elastase inhibitory activity in various thyroid dysfunction states.
  • To assess the relationship between alpha 1-antitrypsin (A-1-AT) levels, elastase inhibition, and thyroid hormone levels.

Main Methods:

  • Measured serum A-1-AT concentrations and porcine pancreatic elastase inhibitory activity.
  • Correlated these measures with thyroid status (hyperthyroidism, hypothyroidism, subclinical hypothyroidism) and free thyroxine (T4) index.

Main Results:

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  • A strong correlation (r=0.95) was observed between A-1-AT concentration and serum elastase inhibitory activity.
  • Significantly higher A-1-AT concentrations and elastase inhibitory activity were found in hyperthyroid patients compared to other groups.
  • Free T4 index positively correlated with both A-1-AT (r=0.68) and elastase inhibitory activity (r=0.61).

Conclusions:

  • Serum elastase inhibitory activity, mediated by A-1-AT, is significantly increased in hyperthyroid patients.
  • Thyroid dysfunction, particularly hyperthyroidism, influences serum protease inhibitor levels and activity.
  • These findings suggest a potential link between thyroid status and mechanisms affecting dermal elastic fibers.