Abstract

Variations in blood concentrations of antiphospholipid antibodies (APA) were investigated through the course of pregnancy in women who had a history of recurrent pregnancy loss, and were related to changes in pregnancy outcome. Serial measurements of APA were made in 16 women with antiphospholipid syndrome (APS) and 16 with negative APA tests pre-pregnancy. There was considerable intraindividual variation in test results through pregnancy. There was a significantly higher ratio of dilute Russell's viper venom time and IgG ACA titre in the first trimester compared with results pre-pregnancy in women with APS. Furthermore, transiently positive APA results were noted in the control group during pregnancy and some women with antiphospholipid syndrome tested negative for APA in mid- and late pregnancy. We have demonstrated clinically important variations in the results of tests for APA during pregnancy in women with APS.

Keywords

PregnancyAntiphospholipid syndromeMedicineObstetricsGestationAntibodyImmunologyBiology

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Year
1999
Type
article
Volume
14
Issue
1
Pages
224-228
Citations
55
Access
Closed

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J. Topping, Siobhan Quenby, R. G. Farquharson et al. (1999). Marked variation in antiphospholipid antibodies during pregnancy: relationships to pregnancy outcome. Human Reproduction , 14 (1) , 224-228. https://doi.org/10.1093/humrep/14.1.224

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DOI
10.1093/humrep/14.1.224