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Über die Fähigkeit des menschlichen Fetus zur Immunglobulinsynthese

Immunoglobulin synthesis in the human fetus

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Abstract

The ability of the human fetus to synthesize IgM and IgA was studied in 7 cases with intrauterine infections. The findings are indicative, that the ability of the fetus at the end of gestation to form IgM is comparable with that of an infant several months old, whereas IgA can be produced by the fetus only in small amounts. Our results suggest that the maturation of the IgA producing system starts in the second week of life. From the third month of life onwards an infant seems capable of producing with, by appropriate antigen stimulation, the same amount of IgA as an infant in the second half of the first year.

Zusammenfassung

Die Synthetisierungsfähigkeit des menschlichen Fetus für IgM und IgA wurde am Modell der intrauterinen Infektionen untersucht. Es zeigte sich, daß der Fetus am Ende der Gestationsperiode sich in seiner Fähigkeit, IgM zu bilden, von einem älteren Säugling nicht unterscheidet. IgA hingegen kann vom Fetus nur in einer geringen Menge gebildet werden. Erst in der 2. Lebenswoche beginnt das IgA-produzierende System auszureifen, um in den folgenden Lebenswochen bei Antigenstimulation IgA in einer Menge, die für das Säuglingsalter charakteristisch ist, bilden zu können. Die Untersuchungen gaben auch einen indirekten Hinweis darauf, daß der Fetus zur IgG-Bildung fähig ist. Die Bedeutung der Immunglobulinbestimmung beim Neugeborenen zur Diagnose einer intrauterinen Infektion wird diskutiert.

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Herrn Prof. Dr. E. Lorenz zum 70. Geburtstag gewidmet.

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Rossipal, E. Über die Fähigkeit des menschlichen Fetus zur Immunglobulinsynthese. Z. Kinder-Heilk. 112, 177–186 (1972). https://doi.org/10.1007/BF00443505

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