Neutralizing and Epitope-Specific Antibodies against Respiratory Syncytial Virus in Maternal and Cord Blood Paired Samples.
Viruses
; 14(12)2022 12 02.
Article
em En
| MEDLINE
| ID: mdl-36560707
ABSTRACT
Only a few qualitative studies of neutralizing antibody titers (NATs) against respiratory syncytial virus (RSV) have focused on epitope-specific antibody (ESA) levels. Here, NATs against RSV in sera were measured using the blood of 412 mothers and cord blood (CB) of 95 of the 412 mother-child pairs. ESA levels against sites zero (Ø) and IIa of the F protein of RSV were measured in 87 of the 95 mother-child pairs. The median gestational age was 39 weeks. The NATs and ESA levels in CB were slightly higher than those in maternal blood (MB). The NATs for RSV subtype A (RSV-A) in MB and CB showed a positive correlation (r = 0.75). The ESA levels against sites Ø and IIa in MB and CB showed positive correlations, r = 0.76 and r = 0.69, respectively. In MB, the NATs and ESA levels against RSV were positively correlated, more significantly against site Ø (RSV-A r = 0.70, RSV-B r = 0.48) than against site IIa (RSV-A r = 0.19, RSV-B r = 0.31). Sufficient amounts of ESAs against sites Ø and IIa of RSV were transferred from mothers to term infants. ESA levels against site Ø contribute to NATs.
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MEDLINE
Assunto principal:
Vírus Sincicial Respiratório Humano
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Infecções por Vírus Respiratório Sincicial
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Vacinas contra Vírus Sincicial Respiratório
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article