Down-regulation of maternal antiphospholipid antibodies during early pregnancy and pregnancy outcome.
OBJECTIVE
We investigated the hypothesis that maternal autoimmune responses to phospholipid antigens measured before and during pregnancy are not related to successful pregnancy outcome.


METHODS
One hundred twenty-three women with recurrent spontaneous abortions were serially tested for antiphospholipid antibodies during their pregnancies.


RESULTS
In 72 women with recurrent spontaneous abortions and without antiphospholipid antibodies before the pregnancy, the incidence of antiphospholipid antibody production at the time of pregnancy termination was significantly higher in those who miscarried the index pregnancy than those who were delivered of a live-born infant. In 51 antiphospholipid antibody-positive women with recurrent spontaneous abortions there were dramatic increases in titers of anticardiolipin antibody and antiphosphatidylserine antibody in those who miscarried the index pregnancy (p < 0.005). In women who were delivered of a live-born infant, the titers remained stable or decreased during pregnancy.


CONCLUSIONS
Down-regulation of antiphospholipid antibody production during early pregnancy is associated with favorable pregnancy outcome.
Department of Obstetrics and Gynecology, University of Health Sciences/Chicago Medical School, IL 60064.
J Y
JY
Kwak
R
R
Barini
A
A
Gilman-Sachs
K D
KD
Beaman
A E
AE
Beer
D000026:Abortion, Habitual / Q000188:drug therapy / Q000276:immunology*; D017152:Antibodies, Antiphospholipid / Q000097:blood* / Q000502:physiology; D001241:Aspirin / Q000627:therapeutic use; D015536:Down-Regulation; D005260:Female; D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D011241:Prednisone / Q000627:therapeutic use; D011247:Pregnancy; D011256:Pregnancy Outcome; D011261:Pregnancy Trimester, First
D017152:Antibodies, Antiphospholipid; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D006493:Heparin; D001241:Aspirin; D011241:Prednisone