Thyroid Disease and Systemic Lupus Erythematosus

Area of Science:

• Endocrinology
• Rheumatology
• Autoimmune Diseases

Background:

• Thyroid disorders are frequently associated with autoimmune conditions.
• Systemic lupus erythematosus (SLE) is a complex autoimmune disease with wide-ranging effects.
• The specific relationship between SLE and autoimmune thyroid disease warrants further investigation.

Purpose of the Study:

• To evaluate the association between SLE and autoimmune thyroid disease.
• To determine the prevalence of thyroid dysfunction and antithyroid antibodies in SLE patients.

Main Methods:

• Prospective study of 45 SLE patients and 45 age/sex-matched controls over 12 months.
• Assessment for clinical thyroid disease (hypothyroidism, hyperthyroidism).
• Measurement of antithyroid antibodies, including thyroid peroxidase (TPOab) and thyroglobulin (Tgab).

Main Results:

• Higher incidence of primary hypothyroidism (8.9%), subclinical hypothyroidism (11.11%), and hyperthyroidism (2.22%) in SLE patients versus controls.
• Euthyroid sick syndrome observed in 11.11% of SLE patients.
• Significantly higher prevalence of TPOab (p < 0.05) and Tgab (p < 0.05) in SLE patients compared to controls.

Conclusions:

• Clinical thyroid disease is more prevalent in SLE patients than in the general population.
• A significant number of SLE patients exhibit detectable antithyroid antibodies.
• SLE patients may have an increased predisposition to developing thyroid disease, necessitating screening.