1
|
Gachogo R, Happel AU, Alinde B, Gray CM, Jaspan H, Dzanibe S. Reduced anti-viral IgG repertoire in HIV-exposed but uninfected infants compared to HIV-unexposed infants. iScience 2024; 27:110282. [PMID: 39040054 PMCID: PMC11261148 DOI: 10.1016/j.isci.2024.110282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/10/2024] [Accepted: 06/13/2024] [Indexed: 07/24/2024] Open
Abstract
Infants who are HIV exposed but uninfected (iHEU) have higher risk of viral infections compared to infants who are HIV unexposed (iHUU). We explored the effect of intrauterine HIV exposure on the infant antibody repertoire by quantifying plasma immunoglobulin (Ig) G against 206 eukaryote-infecting viruses using phage immunoprecipitation sequencing (PhiPSeq) in iHEU and iHUU at birth and 36 weeks of life. Maternal HIV infection altered the infant IgG repertoire against eukaryote-infecting viruses at birth, resulting in significantly lower antibody breadth and diversity among iHEU compared to iHUU. Neonatal anti-viral IgG repertoire was dominated by antibodies against viruses belonging to the Herpesviridae family, although, by 36 weeks, this had shifted toward antibodies against enteroviruses, likely due to waning of maternal-derived antibodies and polio vaccine-induced antibody responses as expected. The observed reduced anti-viral IgG repertoire breadth and diversity acquired at birth in iHEU might contribute to the increased rates of viral infections among iHEU during early life.
Collapse
Affiliation(s)
- Rachael Gachogo
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Anna-Ursula Happel
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Berenice Alinde
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Division of Immunology, Department of Biomedical Sciences, Biomedical Research Institute, Stellenbosch University, Cape Town, South Africa
| | - Clive M. Gray
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Division of Immunology, Department of Biomedical Sciences, Biomedical Research Institute, Stellenbosch University, Cape Town, South Africa
| | - Heather Jaspan
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- Seattle Children’s Research Institute, Department of Pediatrics and Global Health, University of Washington, Seattle, WA, USA
| | - Sonwabile Dzanibe
- Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
2
|
Gärtner K, Domínguez-Rodríguez S, Heaney J, Gkouleli T, Grant P, Dorgham K, Sauce D, Soulie C, Busby EJ, O'Sullivan DM, Spyer M, Botha JC, Muñoz-Fernandez MA, Tagarro A, Cotugno N, Huggett JF, Klein N, Palma P, Rojo Conejo P, Foster C, Giaquinto C, Rossi P, Persaud D, De Rossi A, Marcelin AG, Nastouli E. Low unspliced cell-associated HIV RNA in early treated adolescents living with HIV on long suppressive ART. Front Immunol 2024; 15:1334236. [PMID: 38444847 PMCID: PMC10912947 DOI: 10.3389/fimmu.2024.1334236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/23/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction Initiation of antiretroviral treatment (ART) in patients early after HIV-infection and long-term suppression leads to low or undetectable levels of HIV RNA and cell-associated (CA) HIV DNA and RNA. Both CA-DNA and CA-RNA, overestimate the size of the HIV reservoir but CA-RNA as well as p24/cell-free viral RNA can be indicators of residual viral replication. This study describes HIV RNA amounts and levels of cytokines/soluble markers in 40 well-suppressed adolescents who initiated ART early in life and investigated which viral markers may be informative as endpoints in cure clinical trials within this population. Methods Forty adolescents perinatally infected with HIV on suppressive ART for >5 years were enrolled in the CARMA study. HIV DNA and total or unspliced CA-RNA in PBMCs were analyzed by qPCR/RT-qPCR and dPCR/RT-dPCR. Cell-free HIV was determined using an ultrasensitive viral load (US-VL) assay. Plasma markers and p24 were analyzed by digital ELISA and correlations between total and unspliced HIV RNA and clinical markers, including age at ART, Western Blot score, levels of cytokines/inflammation markers or HIV CA-DNA, were tested. Results CA-RNA was detected in two thirds of the participants and was comparable in RT-qPCR and RT-dPCR. Adolescents with undetectable CA-RNA showed significantly lower HIV DNA compared to individuals with detectable CA-RNA. Undetectable unspliced CA-RNA was positively associated with age at ART initiation and Western Blot score. We found that a higher concentration of TNF-α was predictive of higher CA-DNA and CA-RNA. Other clinical characteristics like US-VL, time to suppression, or percent CD4+ T-lymphocytes were not predictive of the CA-RNA in this cross-sectional study. Conclusions Low CA-DNA after long-term suppressive ART is associated with lower CA-RNA, in concordance with other reports. Patients with low CA-RNA levels in combination with low CA-DNA and low Western Blot scores should be further investigated to characterize candidates for treatment interruption trials. Unspliced CA-RNA warrants further investigation as a marker that can be prioritized in paediatric clinical trials where the sample volume can be a significant limitation.
Collapse
Affiliation(s)
- Kathleen Gärtner
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Sara Domínguez-Rodríguez
- Fundación de Investigación Biomédica Hospital 12 de Octubre, Instituto de Investigación 12 de Octubre (imas12), Madrid, Spain
- Universidad Europea de Madrid, Madrid, Spain
| | - Judith Heaney
- Advanced Pathogen Diagnostic Unit, University College London Hospitals (UCLH), London, United Kingdom
| | - Triantafylia Gkouleli
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Haematology Department, Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom
| | - Paul Grant
- Advanced Pathogen Diagnostic Unit, University College London Hospitals (UCLH), London, United Kingdom
| | - Karim Dorgham
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Delphine Sauce
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France
| | - Cathia Soulie
- Sorbonne Université, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Inserm, AP HP, Hôpitaux Universtaires Pitié Salpêtrière - Charles Foix, Laboratoire de Virologie, Paris, France
| | - Eloise J Busby
- National Measurement Laboratory (NML), LGC Group, Teddington, United Kingdom
| | - Denise M O'Sullivan
- National Measurement Laboratory (NML), LGC Group, Teddington, United Kingdom
- Clinical Immunology and Vaccinology Unit, Bambino Gesù Children's Hospital, Istituto di RicerCa a Carattere Scientifico (IRCCS), Rome, Italy
| | - Moira Spyer
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Johannes C Botha
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Advanced Pathogen Diagnostic Unit, University College London Hospitals (UCLH), London, United Kingdom
| | | | - Alfredo Tagarro
- Fundación de Investigación Biomédica Hospital 12 de Octubre, Instituto de Investigación 12 de Octubre (imas12), Madrid, Spain
- Universidad Europea de Madrid, Madrid, Spain
- Department of Pediatrics, Infanta Sofía University Hospital, Fundación para la Investigación Biomédica e Innovación Hospital Universitario Infanta Sofía y Hospital del Henares (FIIB HUIS HHEN), Madrid, Spain
| | - Nicola Cotugno
- Clinical Immunology and Vaccinology Unit, Bambino Gesù Children's Hospital, Istituto di RicerCa a Carattere Scientifico (IRCCS), Rome, Italy
- Academic Department of Pediatrics, Research Unit in Congenital and Perinatal Infections, Bambino Gesu Children's Hospital, Rome, Italy
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Jim F Huggett
- National Measurement Laboratory (NML), LGC Group, Teddington, United Kingdom
- School of Biosciences & Medicine, University of Surrey, Guildford, United Kingdom
| | - Nigel Klein
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Paolo Palma
- Clinical Immunology and Vaccinology Unit, Bambino Gesù Children's Hospital, Istituto di RicerCa a Carattere Scientifico (IRCCS), Rome, Italy
- Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Pablo Rojo Conejo
- Fundación de Investigación Biomédica Hospital 12 de Octubre, Instituto de Investigación 12 de Octubre (imas12), Madrid, Spain
| | - Caroline Foster
- Department of Paediatrics, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - Carlo Giaquinto
- Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
| | - Paolo Rossi
- Academic Department of Pediatrics, Research Unit in Congenital and Perinatal Infections, Bambino Gesu Children's Hospital, Rome, Italy
| | - Deborah Persaud
- Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Anita De Rossi
- Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
| | - Anne-Geneviève Marcelin
- Sorbonne Université, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Inserm, AP HP, Hôpitaux Universtaires Pitié Salpêtrière - Charles Foix, Laboratoire de Virologie, Paris, France
| | - Eleni Nastouli
- Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
- Advanced Pathogen Diagnostic Unit, University College London Hospitals (UCLH), London, United Kingdom
| |
Collapse
|
3
|
Mataramvura H, Bunders MJ, Duri K. Human immunodeficiency virus and antiretroviral therapy-mediated immune cell metabolic dysregulation in children born to HIV-infected women: potential clinical implications. Front Immunol 2023; 14:1182217. [PMID: 37350953 PMCID: PMC10282157 DOI: 10.3389/fimmu.2023.1182217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/25/2023] [Indexed: 06/24/2023] Open
Abstract
Commencing lifelong antiretroviral therapy (ART) immediately following HIV diagnosis (Option B+) has dramatically improved the health of HIV-infected women and their children, with the majority being of HIV-exposed children born uninfected (HEU). This success has led to an increasing population of HIV-infected women receiving ART during pregnancy and children exposed to ART in utero. Nonetheless, a small proportion of children are still infected with HIV (HEI) each year. HEI children suffer from reduced immunocompetence and host-defence, due to CD4+ T lymphocyte depletion, but also dysregulation of other immune cells including CD8+ T lymphocytes, natural killer (NK) cells, macrophages including B lymphocytes. Furthermore, although HEU children are uninfected, altered immune responses are observed and associated with increased vulnerability to infections. The mechanisms underlying immune dysregulation in HEU children remain poorly described. Building on early studies, emerging data suggests that HIV/ART exposure early in life affects cell metabolic function of HEU children. Prenatal HIV/ART exposure has been associated with dysregulation of mitochondria, including impaired DNA polymerase activity. Furthermore, dysregulation of oxidative phosphorylation (OXPHOS) causes a decreased generation of adenosine triphosphate (ATP) and increased production of reactive oxygen species (ROS), resulting in oxidative stress. These altered metabolic processes can affect immune cell viability and immune responses. Recent studies have indicated that immune-metabolic dysregulation may contribute to HIV-associated pathogenesis and clinical observations associated with HIV and ART exposure in HEU/HEI children. Given the critical role metabolic processes in immune cell functioning, immune-metabolic dysregulation in HEU and HEI children may have implications in effective host-defence responses against pathogens, as well as efficacy of standard ART regimens and future novel HIV cure approaches in HEI children. At the same time, targeting metabolic pathways of immune cells may provide safer and novel approaches for HIV cure strategies. Here, we review the current literature investigating immune-metabolic dysregulation in paediatric HIV pathogenesis.
Collapse
Affiliation(s)
- Hope Mataramvura
- Immunology Unit, University of Zimbabwe Faculty of Medicine and Health Sciences (UZ-FMHS), Harare, Zimbabwe
| | - Madeleine J. Bunders
- III. Medical Department, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
- Department of Virus Immunology, Leibniz Institute of Virology, Hamburg, Germany
| | - Kerina Duri
- Immunology Unit, University of Zimbabwe Faculty of Medicine and Health Sciences (UZ-FMHS), Harare, Zimbabwe
| |
Collapse
|
4
|
du Toit LDV, Prinsloo A, Steel HC, Feucht U, Louw R, Rossouw TM. Immune and Metabolic Alterations in Children with Perinatal HIV Exposure. Viruses 2023; 15:v15020279. [PMID: 36851493 PMCID: PMC9966389 DOI: 10.3390/v15020279] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
With the global rollout of mother-to-child prevention programs for women living with HIV, vertical transmission has been all but eliminated in many countries. However, the number of children who are exposed in utero to HIV and antiretroviral therapy (ART) is ever-increasing. These children who are HIV-exposed-but-uninfected (CHEU) are now well recognized as having persistent health disparities compared to children who are HIV-unexposed-and-uninfected (CHUU). Differences reported between these two groups include immune dysfunction and higher levels of inflammation, cognitive and metabolic abnormalities, as well as increased morbidity and mortality in CHEU. The reasons for these disparities remain largely unknown. The present review focuses on a proposed link between immunometabolic aberrations and clinical pathologies observed in the rapidly expanding CHEU population. By drawing attention, firstly, to the significance of the immune and metabolic alterations observed in these children, and secondly, the impact of their healthcare requirements, particularly in low- and middle-income countries, this review aims to sensitize healthcare workers and policymakers about the long-term risks of in utero exposure to HIV and ART.
Collapse
Affiliation(s)
- Louise D V du Toit
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
- UP Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria 0001, South Africa
- Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria 0001, South Africa
| | - Andrea Prinsloo
- UP Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria 0001, South Africa
- Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria 0001, South Africa
- Department of Hematology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
| | - Helen C Steel
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
| | - Ute Feucht
- UP Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria 0001, South Africa
- Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria 0001, South Africa
- Department of Pediatrics, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
| | - Roan Louw
- Human Metabolomics, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom 2520, South Africa
| | - Theresa M Rossouw
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
- UP Research Centre for Maternal, Fetal, Newborn and Child Health Care Strategies, University of Pretoria, Pretoria 0001, South Africa
- Maternal and Infant Health Care Strategies Research Unit, South African Medical Research Council, Pretoria 0001, South Africa
| |
Collapse
|
5
|
Vazquez-Alejo E, Tarancon-Diez L, Carrasco I, Vigil-Vázquez S, Muñoz-Chapuli M, Rincón-López E, Saavedra-Lozano J, Santos-Sebastián M, Aguilera-Alonso D, Hernanz-Lobo A, Santiago-García B, de León-Luis JA, Muñoz P, Sánchez-Luna M, Navarro ML, Muñoz-Fernández MÁ. SARS-CoV2 Infection During Pregnancy Causes Persistent Immune Abnormalities in Women Without Affecting the Newborns. Front Immunol 2022; 13:947549. [PMID: 35911743 PMCID: PMC9330630 DOI: 10.3389/fimmu.2022.947549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/20/2022] [Indexed: 12/21/2022] Open
Abstract
SARS-CoV2 infection in pregnancy and exposed newborns is poorly known. We performed a longitudinal analysis of immune system and determined soluble cytokine levels in pregnant women infected with SARS-CoV2 and in their newborns. Women with confirmed SARS-CoV2 infection and their exposed uninfected newborns were recruited from Hospital General Universitario Gregorio Marañón. Peripheral blood mononuclear cells (PBMCs), cord cells and plasma were collected at birth and 6 months later. Immunophenotyping of natural killer (NK), monocytes and CD4/CD8 T-cells were studied in cryopreserved PBMCs and cord cells by multiparametric flow cytometry. Up to 4 soluble pro/anti-inflammatory cytokines were assessed in plasma/cord plasma by ELISA assay. SARS-CoV2-infected mothers and their newborns were compared to matched healthy non-SARS-CoV2-infected mothers and their newborns. The TNFα and IL-10 levels of infected mothers were higher at baseline than those of healthy controls. Infected mothers showed increased NK cells activation and reduced expression of maturation markers that reverted after 6 months. They also had high levels of Central Memory and low Effector Memory CD4-T cell subsets. Additionally, the increased CD4- and CD8-T cell activation (CD154 and CD38) and exhaustion (TIM3/TIGIT) levels at baseline compared to controls remained elevated after 6 months. Regarding Treg cells, the levels were lower at infected mothers at baseline but reverted after 6 months. No newborn was infected at birth. The lower levels of monocytes, NK and CD4-T cells observed at SARS-CoV2-exposed newborns compared to unexposed controls significantly increased 6 months later. In conclusion, SARS-CoV2 infection during pregnancy shows differences in immunological components that could lead newborns to future clinical implications after birth. However, SARS-CoV2 exposed 6-months-old newborns showed no immune misbalance, whereas the infected mothers maintain increased activation and exhaustion levels in T-cells after 6 months.
Collapse
Affiliation(s)
- Elena Vazquez-Alejo
- Immunology Section, Laboratory of ImmunoBiology Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), HIV-HGM BioBank, Madrid, Spain
| | - Laura Tarancon-Diez
- Immunology Section, Laboratory of ImmunoBiology Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), HIV-HGM BioBank, Madrid, Spain
| | - Itzíar Carrasco
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Sara Vigil-Vázquez
- Department of Neonatology, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
| | - Mar Muñoz-Chapuli
- Department of Obstetrics and Gynecology, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
| | - Elena Rincón-López
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Jesús Saavedra-Lozano
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Mar Santos-Sebastián
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - David Aguilera-Alonso
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Alicia Hernanz-Lobo
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Begoña Santiago-García
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Juan Antonio de León-Luis
- Department of Obstetrics and Gynecology, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Patricia Muñoz
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón (HGUGM), CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Manuel Sánchez-Luna
- Department of Neonatology, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - María Luisa Navarro
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
- Infectious Diseases Section, Department of Paediatrics, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain
- Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
- CIBER of Infectious Diseases (CIBERINFEC), Madrid, Spain
| | - Mª Ángeles Muñoz-Fernández
- Immunology Section, Laboratory of ImmunoBiology Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), HIV-HGM BioBank, Madrid, Spain
- *Correspondence: M Ángeles Muñoz-Fernández,
| |
Collapse
|
6
|
Teunissen CE, Rohlwink U, Pajkrt D, Naudé PJW. Biomarkers of Tuberculous Meningitis and Pediatric Human Immunodeficiency Virus on the African Continent. Front Neurol 2022; 13:793080. [PMID: 35665032 PMCID: PMC9160376 DOI: 10.3389/fneur.2022.793080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
Biomarkers in body fluids are helpful objective tools in diagnosis, prognosis and monitoring of (therapeutic) responses of many neurological diseases. Cerebrospinal fluid (CSF) biomarkers are part of the diagnostic toolbox for infectious neurological diseases. Tuberculous meningitis (TBM) and Human immunodeficiency virus (HIV), are important burdens of disease in Africa and can negatively affect brain health. Two thirds of the world's population of people living with HIV reside in sub-Saharan Africa and 25% of the global burden of tuberculosis (TB) is carried by the African continent. Neuroinflammation and damage of specific neuronal cell types are key constituents in the pathophysiology of these central nervous system (CNS) diseases, and important potential sources of circulating biomarkers. In this review, we summarize current research in the use of biomarkers in TBM and pediatric HIV as case demonstrations for high prevalence neurological diseases in Africa. Inflammatory molecules, primarily when detected in CSF, appear to have diagnostic value in these diseases, especially when measured as profiles. Brain injury molecules, such as S100, Neuron specific enolase and glial fibrillary acidic protein may have prognostic value in TBM, but more studies are needed. There is a need for more cost-economic and high sensitivity technologies to drive further biomarker discoveries and translate into healthcare improvements for these important healthcare problems in a globally fair way.
Collapse
Affiliation(s)
- Charlotte Elisabeth Teunissen
- Neurochemistry Laboratory, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam, Netherlands
| | - Ursula Rohlwink
- Division of Neurosurgery, Neuroscience Institute, Department of Surgery, University of Cape Town, Cape Town, South Africa
- The Francis Crick Institute, London, United Kingdom
| | - Dasja Pajkrt
- Department of Pediatric Infectious Diseases, Amsterdam University Medical Centers, Location Academic Medical Center, Amsterdam, Netherlands
| | - Petrus J. W. Naudé
- Department of Psychiatry and Mental Health, Neuroscience Institute, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
7
|
Immunopathogenesis in HIV-associated pediatric tuberculosis. Pediatr Res 2022; 91:21-26. [PMID: 33731810 PMCID: PMC8446109 DOI: 10.1038/s41390-021-01393-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/25/2020] [Accepted: 01/18/2021] [Indexed: 11/09/2022]
Abstract
Tuberculosis (TB) is an increasing global emergency in human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) patients, in which host immunity is dysregulated and compromised. However, the pathogenesis and efficacy of therapeutic strategies in HIV-associated TB in developing infants are essentially lacking. Bacillus Calmette-Guerin vaccine, an attenuated live strain of Mycobacterium bovis, is not adequately effective, which confers partial protection against Mycobacterium tuberculosis (Mtb) in infants when administered at birth. However, pediatric HIV infection is most devastating in the disease progression of TB. It remains challenging whether early antiretroviral therapy (ART) could maintain immune development and function, and restore Mtb-specific immune function in HIV-associated TB in children. A better understanding of the immunopathogenesis in HIV-associated pediatric Mtb infection is essential to provide more effective interventions, reducing the risk of morbidity and mortality in HIV-associated Mtb infection in infants. IMPACT: Children living with HIV are more likely prone to opportunistic infection, predisposing high risk of TB diseases. HIV and Mtb coinfection in infants may synergistically accelerate disease progression. Early ART may probably induce immune reconstitution inflammatory syndrome and TB pathology in HIV/Mtb coinfected infants.
Collapse
|
8
|
Brito-Pérez Y, Camacho-Pacheco RT, Plazola-Camacho N, Soriano-Becerril D, Coronado-Zarco IA, Arreola-Ramírez G, González-Pérez G, Herrera-Salazar A, Flores-González J, Bermejo-Haro MY, Casorla-Cervantes BG, Soto-López IA, Hernández-Pineda J, Sandoval-Montes C, Rodríguez-Martínez S, Figueroa-Damian R, Mancilla-Herrera I. Impaired T helper cell responses in human immunodeficiency virus-exposed uninfected newborns. IMMUNITY INFLAMMATION AND DISEASE 2021; 9:1541-1553. [PMID: 34409752 PMCID: PMC8589403 DOI: 10.1002/iid3.507] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 12/17/2022]
Abstract
Introduction HIV‐exposed uninfected (HEU) newborns suffer from higher risks of opportunistic infections during the first months of life compared to HIV‐unexposed uninfected (HUU) newborns. Alterations in thymic mass, amounts of T helper (Th) cells, T‐cell receptor diversity, and activation markers have been found in HEU newborns, suggesting alterations in T cell ontogeny and differentiation. However, little is known about the ability of these cells to produce specialized Th responses from CD4+ T cells. Method To characterize the Th cell profile, we evaluated the frequency of Th1 (CD183+CD194−CD196−/CXCR3+CCR4−CCR6−), Th2 (CD183−CD194+CD196−/CXCR3−CCR4+CCR6−), Th17 (CD183−CD194+CD196+/CXCR3−CCR4+CCR6+), and CD4+CD25++ blood T‐cell phenotypes in 50 HEU and 25 HUU newborns. Early activation markers on CD4+ T cells and the Th cytokine profile produced from mononuclear cells under polyclonal T cell stimulation were also studied. Additionally, we probed the ability of CD4+ T cells to differentiate into interferon (IFN)‐γ‐producing Th1 CD4+ T cells in vitro. Results Lower percentages of differentiated Th1, Th2, Th17, and CD4+CD25++ T cells were found in blood from HEU newborns than in blood from HUU newborns. However, polyclonally stimulated Th cells showed a similar ability to express CD69 and CD279 but produced less secreted interleukin (IL)‐2 and IL‐4. Interestingly, under Th1 differentiation conditions, the percentages of CD4+IFN‐γ+ T cells and soluble IFN‐γ were higher in HEU newborns than in HUU newborns. Conclusion HEU neonates are born with reduced proportions of differentiated Th1/Th2/Th17 and CD4+CD25++ T cells, but the intrinsic abilities of CD4+ T cells to acquire a Th1 profile are not affected by the adverse maternal milieu during development.
Collapse
Affiliation(s)
- Yesenia Brito-Pérez
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico.,Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México.,Posgrado en Inmunología, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Rodrigo T Camacho-Pacheco
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico.,Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México.,Posgrado en Inmunología, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Noemi Plazola-Camacho
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Diana Soriano-Becerril
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Irma A Coronado-Zarco
- Neonatology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | | | - Gabriela González-Pérez
- Department of Physiology and Cellular Development, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Alma Herrera-Salazar
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Julio Flores-González
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Mextli Y Bermejo-Haro
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico.,Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México.,Posgrado en Inmunología, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - Ismael A Soto-López
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Jessica Hernández-Pineda
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Claudia Sandoval-Montes
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Sandra Rodríguez-Martínez
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Ricardo Figueroa-Damian
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| | - Ismael Mancilla-Herrera
- Infectology and Immunology Department, National Institute of Perinatology (INPer), Mexico City, Mexico
| |
Collapse
|
9
|
Association of maternal and infant inflammation with neurodevelopment in HIV-exposed uninfected children in a South African birth cohort. Brain Behav Immun 2021; 91:65-73. [PMID: 32860940 PMCID: PMC7772888 DOI: 10.1016/j.bbi.2020.08.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/07/2020] [Accepted: 08/23/2020] [Indexed: 12/23/2022] Open
Abstract
HIV-exposed uninfected (HEU) children may have altered immune regulation and poorer neurodevelopment outcomes compared to their HIV-unexposed (HU) counterparts. However, studies investigating the association of maternal and infant inflammation with neurodevelopment in HEU children are limited and longitudinal data are lacking. This study investigated serum inflammatory markers in women living with HIV vs. HIV-uninfected women during pregnancy and in their children, as well as associations with neurodevelopmental outcomes at two years of age in an African birth cohort study. A sub-group of mother-child dyads from the Drakenstein Child Health Study had serum inflammatory markers measured at ≈26 week's gestation (n = 77 HIV-infected mothers; n = 190 HIV-uninfected mothers), at 6-10 weeks (n = 63 HEU infants and n = 159 HU infants) and at 24-28 months (n = 77 HEU children and n = 190 HU children). Serum inflammatory markers [granulocyte-macrophage colony-stimulating factor (GM-CSF), interferon-γ (IFN-γ), interleukin IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12p70, IL-13, tumor necrosis factor-α (TNF-α), neutrophil gelatinase-associated lipocalin (NGAL) and metalloproteinase-9 (MMP-9)] were analyzed with a multiplex bead array and ELISA assays. The Bayley Scales of Infant and Toddler Development, third edition, was used to assess neurodevelopment at 24-28 months. After correcting for multiple comparisons, HIV infection during pregnancy was associated with lower serum levels of inflammatory markers in mothers at 26 weeks gestation (GM-CSF and MMP-9, p < 0.05) and HEU children at 6-10 weeks (IFN-γ and IL-1β, p < 0.01), and at 24-28 months (IFN-γ, IL-1β, IL-2 and IL-4, p < 0.05) compared to HIV-uninfected mothers and HU children. In HEU infants at 6-10 weeks, inflammatory markers (GM-CSF, IFN-γ, IL-10, IL-12p70, IL-1β, IL-2, IL-4, IL-6 and NGAL, all p < 0.05) were associated with poorer motor function at two years of age. This is the first study to evaluate the associations of follow-up immune markers in HEU children with neurodevelopment. These findings suggest that maternal HIV infection is associated with immune dysregulation in mothers and their children through two years of age. An altered immune system in HEU infants is associated with poorer follow-up motor neurodevelopment. These data highlight the important role of the immune system in early neurodevelopment and provide a foundation for future research.
Collapse
|
10
|
Baroncelli S, Galluzzo CM, Liotta G, Andreotti M, Mancinelli S, Mphwere R, Bokola E, Amici R, Marazzi MC, Palombi L, Palmisano L, Giuliano M. Immune Activation and Microbial Translocation Markers in HIV-Exposed Uninfected Malawian Infants in the First Year of Life. J Trop Pediatr 2019; 65:617-625. [PMID: 31006009 DOI: 10.1093/tropej/fmz022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND HIV-exposed uninfected (HEU) infants show a high rate of morbidity. We aimed to investigate on biomarkers of immune activation/microbial translocation in HEU infants, evaluating the impact that infections/malnutrition can have on biomarker levels during the first year of life. METHODS Clinical data of 72 Malawian infants were recorded monthly and correlated with levels of soluble CD14 (sCD14), lipopolysaccharide-binding protein (LBP) and intestinal fatty acid-binding protein (I-FABP), analyzed longitudinally. RESULTS Levels of sCD14 and LBP showed a significant age-related increase. Higher levels of LBP (19.4 vs. 15.2 μg/ml) were associated with stunting, affecting 30% of the infants. The association remained statistically significant after adjusting for cytomegalovirus acquisition, malaria and respiratory infections (p = 0.031). I-FABP levels were significantly increased in infants experiencing gastrointestinal infections (1442.8 vs. 860.0 pg/ml, p = 0.018). CONCLUSION We provide evidence that stunting is associated with an enhanced inflammatory response to microbial products in HEU children, suggesting that malnutrition status should be taken into consideration to better understand the alteration of the immune profile of HEU infants living in poor socioeconomic settings.
Collapse
Affiliation(s)
- Silvia Baroncelli
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | | | - Giuseppe Liotta
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Mauro Andreotti
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Sandro Mancinelli
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | | | - Enok Bokola
- DREAM Program, Community of S. Egidio, Blantyre, Malawi
| | - Roberta Amici
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | | | - Leonardo Palombi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Lucia Palmisano
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Marina Giuliano
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| |
Collapse
|
11
|
Kessler PA. Potential Role of Regulatory T Cells in Mother-to-Child Transmission of HIV. Curr HIV Res 2019; 16:396-403. [PMID: 30760190 PMCID: PMC6446459 DOI: 10.2174/1570162x17666190213094624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 02/08/2023]
Abstract
Background: Mother-to-child transmission of HIV-1 occurs in a minority of HIV-infected mother-infant pairs, even without any interventions. The mechanisms that protect the majority of HIV-exposed infants from infection are unclear. T regulatory cells (Treg) have important immunomodulato-ry functions, but their role in the fetus as well as in mother-to-child transmission of HIV is under-studied. Methods: We studied available cryopreserved peripheral blood mononuclear cells from HIV-exposed infants from the Breastfeeding, Antiretrovirals and Nutrition (BAN) Study cohort in Malawi: 64 in-fants were HIV-uninfected and 28 infants were HIV-infected at birth. We quantified the frequency of Treg cells (CD4+CD25+FoxP3+), and activated CD4+ and CD8+ T cells (CD38+ HLADR+) by flow cytometry at birth, 6 weeks and 6, 9 and 12 months of age. Descriptive statistics were performed to describe the distributions of these lymphocyte markers according to the HIV infection status; and Student’s t tests and Wilcoxon-Rank Sum tests were performed to compare HIV- infected and unin-fected infants. Results: T cell activation increased rapidly in the first 6 weeks of life, more pronounced on CD8+ T cells; a further increase in activation was observed at the time of weaning from breastfeeding at 6 months of age. In contrast, the frequency of Treg was stable over the first 6 weeks of life (median, 0.5%), slightly decreased between 6 weeks and 6 months (median at 6 months, 0.3%) and then slight-ly increased between 6 months (time of weaning) and 12 months of age (median, 0.45%). HIV-infected infants had significantly higher frequencies of activated T cells than uninfected infants (P < 0.01). At the time of birth, HIV-exposed uninfected infants had higher levels of Treg, compared to in-fants infected in utero, even though this did not reach statistical significance in this small sample size (P = 0.08). Conclusion: This study provides initial evidence that Treg may play a role in preventing mother-to-child transmission of HIV, likely by suppressing immune activation in the fetus and infant, and needs to be substantiated in a larger study. Better characterization of the role of Treg in fetal and neonatal immunity may provide a valuable complementary approach to achieve eradication of mother-to-child transmission of HIV.
Collapse
Affiliation(s)
- Peter A Kessler
- Department of Pediatrics, Emory University School of Medicine, Atlanta GA, United States
| |
Collapse
|
12
|
Ray JE, Dobbs KR, Ogolla SO, Daud II, Vulule J, Sumba PO, Rochford R, Dent AE. Reduced Transplacental Transfer of Antimalarial Antibodies in Kenyan HIV-Exposed Uninfected Infants. Open Forum Infect Dis 2019; 6:ofz237. [PMID: 31214627 PMCID: PMC6563943 DOI: 10.1093/ofid/ofz237] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 05/17/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Altered neonatal immune responses may contribute to the increased morbidity observed in HIV-exposed but uninfected (HEU) infants compared with HIV-unexposed uninfected (HUU) infants. We sought to examine the effects of prenatal HIV and malaria exposure on maternal and neonatal plasma cytokine profiles and transplacental antibody transfer. METHODS Forty-nine HIV+ and 50 HIV- women and their HIV-uninfected neonate pairs from Kenya were assessed. All HIV+ mothers received combination antiretroviral therapy. Maternal plasma and cord blood plasma samples at delivery were tested for 12 cytokines, total IgG, and IgG specific to 4 vaccine antigens and 14 Plasmodium falciparum antigens. RESULTS HIV+ mothers had lower levels of all 12 plasma cytokines at delivery compared with HIV- mothers, but there were no differences between HEU and HUU neonates. There were no differences in the cord-to-maternal ratios (CMRs) of vaccine-specific IgG between HIV+/HEU and HIV-/HUU maternal-neonate pairs. HIV+/HEU maternal-neonate pairs had significantly lower CMRs for 3 antimalarial IgGs-merozoite surface protein 9, circumsporozoite protein, and erythrocyte binding antigen 181-which remained statistically significant after adjustment for malaria in pregnancy. CONCLUSIONS In a cohort of optimally treated HIV-infected pregnant women, maternal HIV infection was associated with reduced transplacental transfer of antimalarial antibodies.
Collapse
Affiliation(s)
- Jessica E Ray
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio
| | - Katherine R Dobbs
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio
- Division of Pediatric Infectious Diseases, University Hospitals Rainbow Babies and Children’s Hospital, Cleveland, Ohio
| | - Sidney O Ogolla
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Ibrahim I Daud
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - John Vulule
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Peter O Sumba
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Rosemary Rochford
- Department of Immunology and Microbiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Arlene E Dent
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio
- Division of Pediatric Infectious Diseases, University Hospitals Rainbow Babies and Children’s Hospital, Cleveland, Ohio
| |
Collapse
|
13
|
Yeo KT, Embury P, Anderson T, Mungai P, Malhotra I, King C, Kazura J, Dent A. HIV, Cytomegalovirus, and Malaria Infections during Pregnancy Lead to Inflammation and Shifts in Memory B Cell Subsets in Kenyan Neonates. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 202:1465-1478. [PMID: 30674575 PMCID: PMC6379806 DOI: 10.4049/jimmunol.1801024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/17/2018] [Indexed: 11/19/2022]
Abstract
Infections during pregnancy can expose the fetus to microbial Ags, leading to inflammation that affects B cell development. Prenatal fetal immune priming may have an important role in infant acquisition of pathogen-specific immunity. We examined plasma proinflammatory biomarkers, the proportions of various B cell subsets, and fetal priming to tetanus vaccination in cord blood from human United States and Kenyan neonates. United States neonates had no identified prenatal infectious exposures, whereas Kenyan neonates examined had congenital CMV or mothers with prenatal HIV or Plasmodium falciparum or no identified infectious exposures. Kenyan neonates had higher levels of IP-10, TNF-α, CRP, sCD14, and BAFF than United States neonates. Among the Kenyan groups, neonates with prenatal infections/infectious exposures had higher levels of cord blood IFN-γ, IL-7, sTNFR1, and sTNFR2 compared with neonates with no infectious exposures. Kenyan neonates had greater proportions of activated memory B cells (MBC) compared with United States neonates. Among the Kenyan groups, HIV-exposed neonates had greater proportions of atypical MBC compared with the other groups. Although HIV-exposed neonates had altered MBC subset distributions, detection of tetanus-specific MBC from cord blood, indicative of fetal priming with tetanus vaccine given to pregnant women, was comparable in HIV-exposed and non-HIV-exposed neonates. These results indicate that the presence of infections during pregnancy induces fetal immune activation with inflammation and increased activated MBC frequencies in neonates. The immunologic significance and long-term health consequences of these differences warrant further investigation.
Collapse
Affiliation(s)
- Kee Thai Yeo
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH 44106; and
| | - Paula Embury
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
| | - Timothy Anderson
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
| | - Peter Mungai
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
- Division of Vector Borne and Neglected Tropical Diseases, Ministry of Public Health and Sanitation, Nairobi 00200, Kenya
| | - Indu Malhotra
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
| | - Christopher King
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
| | - James Kazura
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106
| | - Arlene Dent
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH 44106;
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH 44106; and
| |
Collapse
|
14
|
Machiavelli A, Duarte RTD, Pires MMDS, Zárate-Bladés CR, Pinto AR. The impact of in utero HIV exposure on gut microbiota, inflammation, and microbial translocation. Gut Microbes 2019; 10:599-614. [PMID: 30657007 PMCID: PMC6748604 DOI: 10.1080/19490976.2018.1560768] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
HIV-exposed but uninfected (HEU) children represent a growing population and show a significantly higher number of infectious diseases, several immune alterations, compromised growth, and increased mortality rates when compared to HIV-unexposed children. Considering the impact that the gut microbiota has on general host homeostasis and immune system development and modulation, we hypothesized that HEU children present altered gut microbiota that is linked to the increased morbidity and the immune system disorders faced by them. Our experiments revealed no differences in beta and alpha diversity of the gut microbiota between HEU and unexposed children or between HIV-infected and uninfected mothers. However, there were differences in the abundance of several taxa from the gut microbiota between HEU and unexposed children and between HIV-infected and uninfected mothers. Functional prediction based on 16S rRNA sequences also indicated differences between HEU and unexposed children and between infected and uninfected mothers. In addition, we detected no differences between HEU and unexposed children in relation to weight, weight-for-age z scores, albumin serum levels, or microbial translocation and inflammation markers. In summary, HIV-infected mothers and their HIV-exposed children present alterations in the abundance of several taxa in the gut microbiome and the predicted functional metagenome when compared to uninfected mothers and unexposed children. Knowledge about the gut microbiome of HEU children in different settings is essential in order to determine better treatments for this susceptible population.
Collapse
Affiliation(s)
- Aline Machiavelli
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Rubens T. Delgado Duarte
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Maria M. de Souza Pires
- Departamento de Pediatria, Universidade Federal de Santa Catarina, Florianópolis, Brazil,Hospital Infantil Joana de Gusmão, Florianópolis, Brazil
| | - Carlos R. Zárate-Bladés
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Aguinaldo R. Pinto
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, Brazil,CONTACT Aguinaldo R. Pinto Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| |
Collapse
|
15
|
T-Cell Receptor Excision Circles in HIV-Exposed, Uninfected Newborns Measured During a National Newborn Screening Program for Severe Combined Immunodeficiency. J Pediatr 2018; 202:311-314.e2. [PMID: 29980289 DOI: 10.1016/j.jpeds.2018.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/18/2018] [Accepted: 06/01/2018] [Indexed: 12/28/2022]
Abstract
Severe combined immunodeficiency screening by measuring T-receptor excision circles at birth allows evaluation of the impact of various maternal conditions on newborn immunity. The slight decrease observed in a French cohort of newborns to HIV-infected mothers can be explained by the confounding factors of prematurity and African descent.
Collapse
|
16
|
Lohman-Payne B, Gabriel B, Park S, Wamalwa D, Maleche-Obimbo E, Farquhar C, Bosire RK, John-Stewart G. HIV-exposed uninfected infants: elevated cord blood Interleukin 8 (IL-8) is significantly associated with maternal HIV infection and systemic IL-8 in a Kenyan cohort. Clin Transl Med 2018; 7:26. [PMID: 30198049 PMCID: PMC6129453 DOI: 10.1186/s40169-018-0206-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 07/20/2018] [Indexed: 12/31/2022] Open
Abstract
Background In low and middle income countries, human immunodeficiency virus (HIV) exposed, uninfected (HEU) infants demonstrate higher morbidity and mortality than their unexposed counterparts. To determine possible immune correlates of this effect, we investigated the impact of in utero HIV exposure on the uninfected neonatal immune milieu and maternal factors mediating these abnormalities in a cohort of vaginally delivered mother-infants. Samples of delivery and cord blood plasma were selected from 22 Kenyan HIV-infected women and their HIV exposed uninfected (HEU) infants drawn from the pre-ARV era, while 19 Kenyan HIV-uninfected (HU) women and their infants were selected from a control cohort. Results Compared to HU cord plasma, HEU cord plasma contained significantly higher levels of pro-inflammatory cytokines interleukins (IL)-6 and -8 (both p < 0.001) and significantly lower levels of CXC motif chemokine 11 (CXC11) (p < 0.001). Mediation analysis demonstrated that maternal HIV infection status was a significant determinant of infant IL-8 responses: HEU status was associated with a ninefold higher infant:mother (cord:delivery) plasma levels of IL-8 (p < 0.005), whereas maternal viral load was negatively associated with HEU IL-8 levels (p = 0.04) and not associated with HEU IL-6 levels. Conclusions Exposure to maternal HIV infection drives an increase in prenatal IL-8 that is partially mediated by maternal cytokine levels. Differences between maternal and infant cytokine levels strongly suggest independent modulation in utero, consistent with prenatal immune activation. Elevated pro-inflammatory signals at birth may interfere with T cell responses at birth and subsequently influence immune maturation and the risk of morbidity and mortality in HEU infants.
Collapse
Affiliation(s)
- Barbara Lohman-Payne
- Institute for Immunology and Informatics and Department of Cell and Molecular Biology, University of Rhode Island, Providence, RI, 02903, USA.
| | - Benjamin Gabriel
- Institute for Immunology and Informatics and Department of Cell and Molecular Biology, University of Rhode Island, Providence, RI, 02903, USA
| | - Sangshin Park
- Center for International Health Research, Rhode Island Hospital, Providence, RI, 02903, USA.,Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI, 02903, USA
| | - Dalton Wamalwa
- Department of Paediatrics and Child Health, University of Nairobi, Nairobi, Kenya
| | | | - Carey Farquhar
- Departments of Global Health, University of Washington, Seattle, WA, 98104, USA.,Departments of Medicine, University of Washington, Seattle, WA, 98104, USA.,Departments of Epidemiology, University of Washington, Seattle, WA, 98104, USA
| | - Rose Kerubo Bosire
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden.,Centre for Public Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Grace John-Stewart
- Departments of Global Health, University of Washington, Seattle, WA, 98104, USA.,Departments of Medicine, University of Washington, Seattle, WA, 98104, USA.,Departments of Epidemiology, University of Washington, Seattle, WA, 98104, USA.,Department of Pediatrics, University of Washington, Seattle, WA, 98104, USA
| |
Collapse
|