Anti-scl-70 antibodies in autoimmune hypothyroidism

Ugurlu S., Caglar E., Yesim T., Balci H., Tasan E.

JOURNAL OF INTERNATIONAL MEDICAL RESEARCH, cilt.36, ss.152-156, 2008 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 36 Konu: 1
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1177/147323000803600119
  • Sayfa Sayıları: ss.152-156


The relationship between autoimmune thyroiditis and systemic sclerosis is controversial. Data exist on the presence of thyroid autoantibodies in patients with systemic sclerosis but, as far as we could ascertain, anti-Scl-70 antibodies, which are highly specific for systemic sclerosis, have not been investigated in autoimmune hypothyroidism. This study compares the presence of anti-Scl-70 in females with autoimmune hypothyroidism (n = 24) and in healthy age-matched female controls (n = 26). Free thyroxine levels were similar in both groups. Thyroid stimulating hormone (TSH), antithyroid peroxidase (anti-TPO), antithyroglobulin (anti-Tg) and index values for anti-Scl-70 levels were significantly higher in patients with autoimmune hypothyroidism compared with controls, although the anti-Scl-70 test was negative in both groups. Anti-TPO, anti-Tg and TSH significantly correlated with anti-Scl-70. In conclusion, autoimmune hypothyroidism seems to be associated with a higher index level of anti-Scl-70, yet a negative anti-Scl-70 antibody test. This suggests that autoimmune hypothyroidism might have common aetiological factors with systemic sclerosis.