Role of maternal humoral immunity in vertical transmission of HIV-1 subtype E in Thailand. 1999

S Louisirirotchanakul, and S Beddows, and R Cheingsong, and N Shaffer, and T D Mastro, and S Likanonsakul, and C Wasi, and G P Taylor, and J N Weber
Department of Genito-Urinary Medicine and Communicable Diseases, Imperial College School of Medicine at St Mary's, London, UK.

The significance of the maternal humoral immune response in relation to vertical transmission of HIV-1 was investigated in 123 mothers infected with subtype E from Thailand. Antibody binding titers to HIV-1 env domains (monomeric gp120, the CD4/gp120 binding site [BS], V3 loop, and gp41) and antibody-mediated neutralization of primary and T-cell line-adapted (TCLA) subtypes B and E HIV-1 isolates were investigated. No correlation between maternal anti HIV-1 antibodies at delivery and vertical transmission of HIV-1 subtype E was found. However, a trend to higher titer antibody-mediated cross-neutralization of a heterologous subtype B TCLA isolate, HIV-1MN, was observed in nontransmitting mothers postpartum. The HIV-1-specific antibody titers in these infected mothers increased significantly from delivery to 6 months postpartum (p < .05), but this was only partially attributable to hemodilution and an additional factor or factors appear to affect humoral immunity to HIV-1 during late pregnancy.

UI MeSH Term Description Entries
D007112 Immunity, Maternally-Acquired Resistance to a disease-causing agent induced by the introduction of maternal immunity into the fetus by transplacental transfer or into the neonate through colostrum and milk. Fetal Immunity, Maternally-Acquired,Maternally-Acquired Immunity,Neonatal Immunity, Maternally-Acquired,Immunity, Maternally Acquired,Fetal Immunities, Maternally-Acquired,Fetal Immunity, Maternally Acquired,Immunity, Maternally-Acquired Fetal,Immunity, Maternally-Acquired Neonatal,Maternally Acquired Immunities,Maternally Acquired Immunity,Maternally-Acquired Fetal Immunities,Maternally-Acquired Fetal Immunity,Maternally-Acquired Immunities,Maternally-Acquired Neonatal Immunities,Maternally-Acquired Neonatal Immunity,Neonatal Immunities, Maternally-Acquired,Neonatal Immunity, Maternally Acquired
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009500 Neutralization Tests The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50). Neutralization Test,Test, Neutralization,Tests, Neutralization
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011251 Pregnancy Complications, Infectious The co-occurrence of pregnancy and an INFECTION. The infection may precede or follow FERTILIZATION. Complications, Infectious Pregnancy,Infectious Pregnancy Complications,Maternal Sepsis,Pregnancy, Infectious Complications,Sepsis during Pregnancy,Sepsis in Pregnancy,Infectious Pregnancy Complication,Pregnancy Complication, Infectious,Sepsis in Pregnancies,Sepsis, Maternal
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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