Abstract
We wanted to examine whether the detrimental effect of serum containing antiphospholipid (APL) antibodies on rat pregnancy outcome can be neutralized by addition of human decidua-associated protein (hDP) 200, a kind of rheumatoid factor, extracted from decidual tissue. Fifty microliters of pooled serum, obtained from women having anticardiolipin antibody and lupus anticoagulant and presenting with APL antibody syndrome, added with 100 microL of immunoaffinity purified hDP200 was injected into unilateral uterine horn of each rat on day L5 of rat pregnancy. The contralateral uterine horn was used for injection of 50 microL APL positive serum added with physiologic saline as a control. The rats were killed on day L14, and the uterus of each rat was inspected for the presence of live and resorbed fetuses. The addition of hDP200 to APL positive serum before the intrauterine injection neutralized the detrimental effect of APL serum on fetal resorption rate. Although the neutralizing effect was demonstrated following the addition of hDP200 and immediate intrauterine injection (a decrease in fetal resorption rate, P = 0.004), still the effect was more impressive following the addition of hDP200 and incubation period of 24 hr before the...Continue Reading
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