Autoimmune associated recurrent abortions

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Abstract
A possible relationship between recurrent spontaneous abortions and autoimmune abnormalities was studied. Eight serological autoimmune or autoimmune-correlated parameters were investigated in 91 women with unexplained recurrent abortions (≥3 consecutive, spontaneous abortions) and 89 fertile control women. Five parameters were seen significantly more frequently in 19 women with at least one second trimester miscarriage which had been associated with severe intrauterine growth regardation (IUGR), than in controls. Seventeen of these 19 patients (89%) had at least one positive autoimmune parameter, compared to 15 of 72 patients (21%) with no second trimester abortions with IUGR (P < 0.0001) and 14 (16%) of the controls (P < 0.0001). No single autoantibody characterized patients who exhibited a significant accumulation of autoimmune parameters. These findings may suggest that women with recurrent abortions, in whom autoimmunity is thought to play a role, cannot be identified merely by one laboratory assay, such as that for cardiolipin antibodies, but must be defined by positivity of several criteria. Using our own test panel, preliminary clinical and serological criteria have been set up for the definition of an autoimmune-associated recurrent abortion condition. Twenty-three per cent of the patients in our material fulfilled these criteria, and seven out of nine of these women (78%) have to date been treated successfully with heparin/aspirin during pregnancy.

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