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Subclinical autoimmune disease and unexplained abortion
American Journal of Obstetrics and Gynecology
|October 15, 1984
Summary
Autoimmune markers were identified in 29% of women with unexplained recurrent pregnancy loss. Early autoimmune disease may be a treatable cause of reproductive loss.
Area of Science:
- Immunology
- Reproductive Medicine
- Genetics
Background:
- Recurrent pregnancy loss (RPL) affects 1-5% of couples.
- Subclinical autoimmune conditions are suspected in unexplained RPL.
- Limited data exists on autoimmune serologic abnormalities in unexplained RPL.
Purpose of the Study:
- To investigate the incidence of autoimmune serologic abnormalities in patients with unexplained recurrent abortions.
- To identify specific autoimmune markers associated with unexplained RPL.
- To explore potential treatable etiologies for reproductive loss.
Main Methods:
- Conducted 11 serologic autoimmune tests on sera from 14 patients with 3+ unexplained abortions (group II).
- Compared results to 16 control patients with diagnosed causes for recurrent abortions (group I).
- Ensured groups were similar in age, gravidity, pregnancy outcomes, and sampling intervals.
Main Results:
- A positive antinuclear antibody test with at least one other positive test was found in 4 of 14 (29%) patients in group II (p < 0.05).
- Key identifying tests included antinuclear antibody levels, antibodies to DNA or extractable nuclear antigen, and low complement 3 levels.
- No significant differences were noted in demographic or reproductive characteristics between groups.
Conclusions:
- Autoimmune serologic abnormalities are present in a significant proportion (29%) of patients with unexplained recurrent abortions.
- Early or subclinical autoimmune disease may represent a treatable cause of reproductive loss.
- Further research is warranted to confirm these findings and establish diagnostic/therapeutic protocols.