title: Embryotoxic effects of heterologous antisera against rat Reichert's membrane.
abstract: Parietal yolk-sacs of rat embryos at the fifteenth day of gestation were obtained by microdissection. A Reichert's membrane (RM) preparation was isolated by treating the parietal yolk-sacs with the chelating agent tetrasodium salt of ethylenediaminetetraacetic acid (EDTA) combined with mechanical shaking. Less than 1% of the membrane preparation was DNA and phosphorus contaminants. The membrane purity was also evaluated by electrom microscopic examination. Rabbit Ig G directed against the RM preparation when injected ip into ninth day pregnant rats produced malformations, fetal growth retardation and resorption. Fluorescent-labeled antibody localization studies demonstrated that the teratogenic antibodies localized in RM. It is postulated that RM antibodies induce teratogenesis by interfering with the function of RM.
mesh_terms: D000818:Animals; D000906:Antibodies; D000937:Antigen-Antibody Reactions; D000013:Congenital Abnormalities / Q000209:etiology; D004306:Dose-Response Relationship, Immunologic; D005260:Female; D005327:Fetal Resorption / Q000209:etiology; D005455:Fluorescent Antibody Technique; D011247:Pregnancy; D051381:Rats; D013723:Teratogens; D014817:Vitelline Membrane / Q000276:immunology*
chemical_list: D000906:Antibodies; D013723:Teratogens