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2017 ; 8
(ä): 1294
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Factors Affecting the FcRn-Mediated Transplacental Transfer of Antibodies and
Implications for Vaccination in Pregnancy
#MMPMID29163461
Wilcox CR
; Holder B
; Jones CE
Front Immunol
2017[]; 8
(ä): 1294
PMID29163461
show ga
At birth, neonates are particularly vulnerable to infection and transplacental
transfer of immunoglobulin G (IgG) from mother to fetus provides crucial
protection in the first weeks of life. Transcytosis of IgG occurs via binding
with the neonatal Fc receptor (FcRn) in the placental synctiotrophoblast. As
maternal vaccination becomes an increasingly important strategy for the
protection of young infants, improving our understanding of transplacental
transfer and the factors that may affect this will become increasingly important,
especially in low-income countries where the burden of morbidity and mortality is
highest. This review highlights factors of relevance to maternal vaccination that
may modulate placental transfer-IgG subclass, glycosylation of antibody, total
maternal IgG concentration, maternal disease, infant gestational age, and
birthweight-and outlines the conflicting evidence and questions that remain
regarding the complexities of these relationships. Furthermore, the intricacies
of the Ab-FcRn interaction remain poorly understood and models that may help
address future research questions are described.