ArticleEBioMedicine2023
B-cell immunity and vaccine induced antibody protection reveal the inefficacy of current vaccination schedule in infants with perinatal HIV-infection in Mozambique, Africa.
Article in EBioMedicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 10 citations in OpenAlex.
- Integration of Preclinical and Clinical Vaccine Safety and Immunogenicity Testing for Development of a Pediatric HIV Vaccine to Achieve Protective HIV Immunity Prior to Adolescence.Current HIV research · 2026Review
- Article
- Seroprotection against tetanus in HIV-exposed and HIV-unexposed infants in Malawi in 2019-2020.BMJ paediatrics open · 2024Article
- Reduced anti-viral IgG repertoire in HIV-exposed but uninfected infants compared to HIV-unexposed infants.iScience · 2024Article
- Accelerated CD8iScience · 2024Article
- Children with perinatally acquired HIV exhibit distinct immune responses to 4CMenB vaccine.JCI insight · 2024Article
- Emerging insights into atypical B cells in pediatric chronic infectious diseases and immune system disorders: T(o)-bet on control of B-cell immune activation.The Journal of allergy and clinical immunology · 2024Review
- HIV-exposed uninfected infants' immune defects: From pathogen sensing, oxidative burst to antigens responses.iScience · 2023Review
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Authors and funding
16 authors at 5 institutions in 3 countries.
Funding
Abstract
backgroundDespite antiretroviral treatment (ART), immune dysfunction persists in children with perinatal HIV infection (HEI). Here we investigated the impact of HIV status on maternal antibody (Ab) passage, long-term vaccine induced immunity and B-cell maturation.
methods46 HIV Exposed Uninfected (HEU), 43 HEI, and 15 HIV unexposed uninfected (HUU) infants were vaccinated with 3 doses of DTaP-HepB-Hib-PCV10-OP at 2, 3, and 4 months at Matola Provincial Hospital, Maputo, Mozambique. Tetanus toxoid specific (TT) IgG, HIV Ab and B-cell phenotype characteristics were evaluated at entry, pre-ART, 5, 10, and 18 months in this longitudinal cohort study.
findingsBaseline (maternal) plasma TT Ab levels were significantly lower in HEI compared to both HEU and HUU and a faster decay of TT Ab was observed in HEI compared to HEU with significantly lower TT Ab levels at 10 and 18 months of age. TT unprotected (UP) (≤0.1 IU/mL) HEI showed higher HIV-RNA at entry and higher longitudinal HIV viremia (Area Under the Curve) compared to TT protected (P) HEI. A distinct HIV-Ab profile was found at entry in HEI compared to HEU. B-cell phenotype showed a B-cell perturbation in HEI vs HEU infants at entry (mean age 40.8 days) with lower transitional CD10+CD19+ B-cells and IgD+CD27- naive B-cells and an overall higher frequency of IgD-CD27- double negative B-cell subsets in HEI.
interpretationB-cell perturbation, presenting with higher double negative IgD-CD27- B-cells was observed in neonatal age and may play a major role in the B-cell exhaustion in HEI. The ability to maintain TT protective Ab titers over time is impaired in HEI with uncontrolled viral replication and the current vaccination schedule is insufficient to provide long-term protection against tetanus.
fundingThis work was supported by: NIH grant to SP (5R01AI127347-05); Children's Hospital Bambino Gesú (Ricerca corrente 2019) to NC, and Associazione Volontari Bambino Gesù to PP.
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