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Related Experiment Videos

Thyroid function and antibody studies in pernicious anaemia.

G Krassas, S McHardy-Young, I Ramsay

    Clinical Endocrinology
    |February 1, 1977
    PubMed
    Summary
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    Pernicious anemia patients often have thyroid antibodies, which correlate with altered thyroid stimulating hormone (TSH) and thyrotrophin-releasing hormone (TRH) responses, even without overt thyroid disease.

    Area of Science:

    • Endocrinology
    • Immunology
    • Hematology

    Background:

    • Pernicious anemia (PA) is an autoimmune condition affecting the stomach.
    • The co-occurrence of PA and autoimmune thyroid disease is frequently observed.
    • Subclinical thyroid dysfunction may be present in PA patients without overt thyroid disease.

    Purpose of the Study:

    • To investigate the prevalence of thyroid antibodies in patients with pernicious anemia.
    • To assess thyroid function, including thyroid stimulating hormone (TSH) and thyrotrophin-releasing hormone (TRH) response, in relation to thyroid antibody status in PA patients.
    • To determine if thyroid hormone levels indicate hypothyroidism in this cohort.

    Main Methods:

    • Assessed thyroid antibodies in 30 patients diagnosed with pernicious anemia.

    Related Experiment Videos

  • Measured basal TSH levels and TSH response to TRH stimulation.
  • Evaluated thyroid hormone concentrations.

    • Main Results:

    • Thyroid antibodies were detected in 57% of the studied PA patients.
    • Elevated basal TSH and enhanced TSH response to TRH were observed exclusively in antibody-positive subjects.
    • Antibody-negative subjects, particularly older individuals, often showed undetectable basal TSH and impaired TRH response.
    • Thyroid hormone levels did not definitively indicate hypothyroidism in any patient.

    Conclusions:

    • Thyroid autoimmunity is common in pernicious anemia patients, even in the absence of clinical thyroid disease.
    • Thyroid antibody status is associated with distinct patterns of TSH and TRH responses, suggesting subclinical thyroid alterations.
    • Further investigation is warranted to understand the clinical significance of these findings and the potential for developing overt thyroid disease.