Parvovirus B19 Infection Is Associated with Autoimmune Thyroid Disease in Adults

Area of Science:

• Immunology
• Virology
• Endocrinology

Background:

• Autoimmune thyroid diseases (AITD) are prevalent, affecting approximately 10% globally.
• Infectious agents are implicated in triggering autoimmune responses in the thyroid.
• The potential role of parvovirus B19 in AITD requires further investigation.

Purpose of the Study:

• To investigate the association between parvovirus B19 infection and autoimmune thyroid disorders.
• To compare the prevalence of parvovirus B19 infection in patients with Graves' disease and Hashimoto's thyroiditis versus healthy controls.

Main Methods:

• Adult patients with newly diagnosed Graves' disease (GD) and Hashimoto's thyroiditis (HT) were recruited.
• Healthy euthyroid individuals served as the control group.
• Serum parvovirus B19 immunoglobulin G (IgG) antibody levels were assessed and compared across groups.

Main Results:

• Prevalence of parvovirus B19 infection was higher in HT (61.1%) and GD (58.9%) patients compared to controls (47.1%).
• A significant positive correlation was found between B19 IgG and thyroid peroxidase antibodies (TPOAb) in HT patients (r=0.764, P<0.001).
• Significant positive correlations were also observed between B19 IgG and TPOAb (r=0.779, P<0.001) and thyroglobulin antibodies (TgAb) (r=0.467, P<0.001) in GD patients.

Conclusions:

• Parvovirus B19 infection is commonly detected in patients suffering from autoimmune thyroid disorders.
• Findings suggest a potential link between parvovirus B19 and the development or exacerbation of AITD.