Effects of Presensitization of Antiheart Serum on the Rat Embryonic Heart

Overview

Journal Heart Vessels

Specialty Cardiology & Vascular Diseases

Date 1987 Jan 1

PMID 3624159

Authors

K Miyata

S Ono

M Ninomiya

K Tshiani

E Yamamoto

T Takesue

Affiliations

Soon will be listed here.

Abstract

After sensitization by rabbit anti-rat-heart serum (AHS), Wistar rats were injected with 9 ml/kg of AHS on day 9 of gestation. The incidence of malformations was 31.5% and that of cardiovascular malformations was 21.8%. The main malformations were microphthalmia, ventricular septal defect, pulmonary stenosis, and general edema. No antinuclear antibody was detected in the maternal sera by the fluorescent antibody technique. No complete heart block was found in the fetuses by electrocardiography. The fluorescent antibody technique demonstrated localization of rat IgG and rat C3 on the maternal myocardium, but a light-microscopic study revealed no myocarditis or endocarditis in either the maternal or the fetal heart. The types of malformation were similar to those observed after a single administration of antikidney serum, which presumably involves yolk sac dysfunction. These results show that both the existence of the immune complexes of antibodies against AHS and the administration of AHS on day 9 are necessary to cause yolk sac dysfunction or other teratogenic changes.

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