Abstract
To investigate the effects of antiphospholipid antibodies on establishment of pregnancy and changes in hormones such as estradiol-17 (E-2) and progesterone (P) levels in circulation. Hence, mice were immunized with human beta 2-Glycoprotein I (beta 2GPI) and the effect of these antibodies on fetuses weight, placental obsrvation, Serum levels of P and E-2 in pregnant mice, hematological were observed. Immunization of mice with human beta(2)-GPI resulted in elevated levels of antiphospholipid antibodies. The experimentally induced antiphospholipid syndrome mouse showed higher rate of fetal resorption, low number of viable fetuses, and "placental abnormalities". In these animals, serum E-2 and P levels were reduced significantly. In addition, the blood cell variation among APS induced and control mice were determined. No significant variations were observed in number of Red Blood Cell count, White Blood Cell count and Hemoglobin content, while platelet number was significantly reduced as compared to control. These results clearly demonstrate that human beta(2)-GPI might be involved in causing gestational failure in APS by exerting their effect on serum hormones.