Postpartum Thyroiditis - an Organ Specific Syndrome Which is Not Associated with A Postpartum Polyclonal B-Cell Activation
Autoimmunity(1992)
Abstract
Recent reports have detailed the presence of autoantibodies characteristic of non-organ specific autoimmune diseases in the serum of patients with autoimmune postpartum thyroiditis (PPT). These observations suggest that PPT could be part of a polyclonal B-cell activation postpartum. We have measured 4 non-organ specific autoantibodies (anti-DNA, anti-cardiolipin, anti-nuclear factor (ANF) and antibodies against extractable nuclear antigens (ENA)) together with autoantibodies against thyroglobulin and thyroid peroxidase in a group of PPT women at 4 time points during the first year postpartum (early, time of hyperthyroidism, time of hypothyroidism, late). Whilst 18/18 patients showed thyroid specific autoantibody changes there was only a low frequency of occurrence of the non-organ specific autoantibodies (ENA 2/18; ANF 1/18; anti-DNA 2/18; anti-dsDNA 0/18; anti-cardiolipin 0/18) and, when positive, the response was poor. We conclude that PPT is not associated with a polyclonal b-cell activation but is a postpartum rebound of a thyroid specific autoimmune phenomenon.
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Key words
ANTI-TPO,ANTITHYROGLOBULIN,ANTI-DNA,ANTICARDIOLIPIN,ANF,ENA
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