Interaction of Heparin With Antiphospholipid Antibodies (APA) From the Sera of Women With Recurrent Pregnancy Loss (RPL)
Article first published online: 9 MAY 2013
American Journal of Reproductive Immunology
Volume 33, Issue 1, pages 14–20, January 1995
How to Cite
Ermel, L. D., Marshburn, P. B. and Kutteh, W. H. (1995), Interaction of Heparin With Antiphospholipid Antibodies (APA) From the Sera of Women With Recurrent Pregnancy Loss (RPL). American Journal of Reproductive Immunology, 33: 14–20. doi: 10.1111/j.1600-0897.1995.tb01133.x
- Issue published online: 9 MAY 2013
- Article first published online: 9 MAY 2013
- Accepted August 25, 1994
- antiphospholipid antibodies;
- recurrent pregnancy loss;
PROBLEM: To determine if heparin may act directly with antiphospholipid antibodies (APA) to prevent recurrent pregnancy loss (RPL).
METHOD: Patients were seen at the University of Texas Southwestern Medical Center. Twenty women with a history of RPL (≥3 miscarriages), positive APA, and an otherwise normal evaluation were treated with heparin in two daily subcutaneous dosages during a successful pregnancy. APA levels were obtained prior to conception and again at 6, 20, and 30 weeks.
RESULTS: Heparin reduced APA binding to cardiolipin and phosphatidylserine in a dose-dependent fashion in ELISA. Heparin affinity chromatography absorbed over 80% of the IgG anticardiolipin antibody in serum from women with high levels of APA. Women treated with increasing dosages of heparin during pregnancy had inversely decreasing levels of IgG anticardiolipin antibody.
CONCLUSION: Heparin may act by directly binding APA in vivo, thereby decreasing the adverse effects of APA in women with APA associated RPL.