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Related Experiment Videos

Autoantibodies in feline hyperthyroidism.

R L Kennedy1, K L Thoday

  • 1Department of Medicine, University of Sheffield, Northern General Hospital.

Research in Veterinary Science
|November 1, 1988
PubMed
Summary
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Thirty-four percent of hyperthyroid cats had thyroid autoantibodies, suggesting an immune basis for feline hyperthyroidism. This finding supports its use as a model for human autoimmune thyrotoxicosis.

Area of Science:

  • Veterinary Medicine
  • Immunology
  • Endocrinology

Background:

  • Hyperthyroidism is a common endocrine disorder in cats.
  • The role of autoimmunity in feline hyperthyroidism is not fully understood.

Purpose of the Study:

  • To investigate the presence of thyroid autoantibodies and antinuclear factor in cats with hyperthyroidism.
  • To explore the potential autoimmune basis of feline hyperthyroidism.

Main Methods:

  • Indirect immunofluorescence was used to detect thyroid autoantibodies and antinuclear factor in feline sera.
  • Histological examination of thyroid tissue was performed.
  • Clinical data, including goitre presence and recurrence after surgery, were analyzed.

Main Results:

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  • Thyroid autoantibodies were detected in 34% of hyperthyroid cats.
  • Antinuclear factor was found in additional cases.
  • A significant association was observed between strong thyroid antibody reactions, bilateral goitres, and lymphocytic infiltration of the thyroid (P < 0.05).
  • Recurrent hyperthyroidism was noted in some post-operative cases, with positive antibody titers.

Conclusions:

  • A subset of feline hyperthyroidism cases may be immunologically mediated.
  • Feline hyperthyroidism can serve as a valuable model for studying human autoimmune thyrotoxicosis.