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https://www.readbyqxmd.com/read/29140938/immunity-following-childhood-vaccinations-in-perinatally-hiv-exposed-children-with-and-without-hiv-infection-in-latin-america
#1
Regina Cm Succi, Margot R Krauss, D Robert Harris, Daisy M Machado, Maria I de Moraes-Pinto, Marisa M Mussi-Pinhata, Noris Pavia Ruz, Russell B Pierre, Lenka A Kolevic Roca, Esaú Joao, Irene Foradori, Marcelo C Scotta, Rohan Hazra, George K Siberry
BACKGROUND: Perinatally HIV-infected (PHIV) children are at risk for undervaccination and poor vaccine response at four years of age. Childhood vaccine coverage and immune response were compared between PHIV and HIV-exposed uninfected (HEU) children in Latin America and the Caribbean. METHODS: PHIV and HEU children were enrolled prospectively at fifteen sites from 2002-2009. Full vaccination by age four years was defined as: three hepatitis B virus (HBV) vaccine doses; four tetanus toxoid-containing vaccine doses; three doses of Haemophilus influenzae type b (Hib) vaccine by age 12 months or ≥1 dose given after age 12 months; one measles-containing vaccine dose; one rubella-containing vaccine dose...
November 14, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29131457/neurodevelopmental-outcome-of-hiv-exposed-but-uninfected-infants-in-the-mother-and-infants-health-study-cape-town-south-africa
#2
Priscilla E Springer, Amy L Slogrove, Barbara Laughton, Julie A Bettinger, Henriëtte H Saunders, Christopher D Molteno, Mariana Kruger
OBJECTIVES: To compare neurodevelopmental outcomes of HIV-exposed uninfected (HEU) and HIV-unexposed uninfected (HUU) infants in a peri-urban South African population. HEU infants living in Africa face unique biological and environmental risks but uncertainty remains regarding their neurodevelopmen-tal outcome. This is partly due to lack of well-matched HUU comparison groups needed to adjust for confounding factors. METHODS: This was a prospective cohort study of infants enrolled at birth from a low- risk midwife obstetric facility...
November 13, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/29119726/cotrimoxazole-prophylaxis-was-associated-with-enteric-commensal-bacterial-resistance-among-hiv-exposed-infants-in-a-randomized-controlled-trial-botswana
#3
Kathleen M Powis, Sajini Souda, Shahin Lockman, Gbolahan Ajibola, Kara Bennett, Jean Leidner, Michael D Hughes, Sikhulile Moyo, Erik van Widenfelt, Haruna B Jibril, Joseph Makhema, Max Essex, Roger L Shapiro
INTRODUCTION: Despite declining risk of vertical HIV transmission, prophylactic cotrimoxazole (CTX) remains widely used to reduce morbidity and mortality in the event of HIV infection among exposed infants, with an inherent risk of conferring commensal antimicrobial resistance. Using data from a randomized, placebo-controlled trial of infant CTX prophylaxis, we sought to quantify emergence of antibiotic resistance. METHODS: HIV-exposed uninfected infants enrolled in the Botswana Mpepu study were randomized to prophylactic CTX or placebo between 14 and 34 days of life and continued through 15 months...
November 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29112074/toll-like-receptor-tlr-9-polymorphism-is-associated-with-increased-epstein-barr-virus-and-cytomegalovirus-acquisition-in-hiv-exposed-infants
#4
Kristin Beima-Sofie, Dalton Wamalwa, Elizabeth Maleche-Obimbo, Jairam R Lingappa, Romel Mackelprang, Soren Gantt, Grace John-Stewart, Corey Casper, Jennifer A Slyker
Polymorphisms in the Toll-Like Receptor (TLR9) 1635 locus have been associated with HIV-1 acquisition and progression. Cytomegalovirus (CMV) and Epstein-Barr virus (EBV) acquisition were compared between Kenyan HIV-exposed infants by 1635 genotype. Having 1 or more copies of the 1635A allele was associated with increased CMV acquisition in HIV-infected infants (42% vs 11%, p = 0.03) and increased risk of EBV acquisition in HIV-exposed uninfected infants (HR = 4.2, p = 0.02) compared to 1635GG. Additionally, 1635A was associated with 0...
November 2, 2017: AIDS
https://www.readbyqxmd.com/read/29112069/neuropsychological-performance-in-african-children-with-hiv-enrolled-in-a-multi-site-anti-retroviral-clinical-trial
#5
Michael J Boivin, Linda Barlow-Mosha, Miriam Chernoff, Barbara Laughton, Bonnie Zimmer, Celeste Joyce, Mutsa Bwakura-Dangarembizi, Mmule Ratswana, Nasreen Abrahams, Lee Fairlie, Hermien Gous, Portia Kamthunzi, Katie McCarthy, Itziar Familiar-Lopez, Patrick Jean-Phillippe, Joan Coetzee, Avy Violari, Mark Cotton, Paul Palumbo
OBJECTIVE & DESIGN: Children with HIV infection (HIV+) are at neuropsychological risk, but few studies have evaluated this at multiple sites in low and middle income countries (LMICs). We compared neuropsychological outcomes at enrollment (>5 yrs age) among HIV+, HIV-uninfected perinatally-exposed (HEU), and HIV unexposed (HU) children from 4 sub-Saharan countries. METHODS: IMPAACT P1060 compared Nevirapine (NVP) versus Lopinavir/Ritonavir (LPVr)-based ART in HIV-infected children 6 to 35 months of age...
November 2, 2017: AIDS
https://www.readbyqxmd.com/read/29108003/schistosoma-other-helminth-infections-and-associated-risk-factors-in-preschool-aged-children-in-urban-tanzania
#6
Khadija Said, Jerry Hella, Stefanie Knopp, Tatu Nassoro, Neema Shija, Fatma Aziz, Francis Mhimbira, Christian Schindler, Upendo Mwingira, Anna M Mandalakas, Karim Manji, Marcel Tanner, Jürg Utzinger, Lukas Fenner
BACKGROUND: Despite the high prevalence of helminth infections among preschool-aged children, control programs in sub-Saharan countries primarily focus on school-aged populations. We assessed the prevalence of helminth infections and determined risk factors for infection among preschool-aged children in the urban setting of Dar es Salaam, Tanzania. METHODOLOGY: Starting in October 2015, we conducted a 12-month prospective study among tuberculosis (TB)-exposed children under the age of 5 years and unexposed controls from neighboring households...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29093555/exosomes-derived-from-hiv-1-infected-dcs-mediate-viral-trans-infection-via-fibronectin-and-galectin-3
#7
Rutuja Kulkarni, Anil Prasad
Exosomes are membrane enclosed nano-sized vesicles actively released into the extracellular milieu that can harbor genomic, proteomic and lipid cargos. Functionally, they are shown to regulate cell-cell communication and transmission of pathogens. Though studies have implicated a role for exosomes in HIV-1 pathogenesis, their mechanisms are not well defined. Here, we characterized exosomes derived from uninfected or HIV-1 infected T-cells and DCs. We demonstrate substantial differences in morphological, molecular and biogenesis machinery between exosomes derived from these two immune cell types...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29066544/maternal-but-not-infant-anti-hiv-1-neutralizing-antibody-response-associates-with-enhanced-transmission-and-infant-morbidity
#8
Melissa Ghulam-Smith, Alex Olson, Laura F White, Charles S Chasela, Sascha R Ellington, Athena P Kourtis, Denise J Jamieson, Gerald Tegha, Charles M van der Horst, Manish Sagar
A significant number of infants acquire HIV-1 through their infected mother's breast milk, primarily due to limited access to antiretrovirals. Passive immunization with neutralizing antibodies (nAbs) may prevent this transmission. Previous studies, however, have generated conflicting results about the ability of nAbs to halt mother-to-child transmission (MTCT) and their impact on infant outcomes. This study compared plasma neutralizing activity in exposed infants and the infected mothers (n = 63) against heterologous HIV-1 variants and the quasispecies present in the mother...
October 24, 2017: MBio
https://www.readbyqxmd.com/read/29066542/mechanisms-of-cns-viral-seeding-by-hiv-cd14-cd16-monocytes-establishment-and-reseeding-of-viral-reservoirs-contributing-to-hiv-associated-neurocognitive-disorders
#9
Mike Veenstra, Rosiris León-Rivera, Ming Li, Lucio Gama, Janice E Clements, Joan W Berman
HIV reservoirs persist despite antiretroviral therapy (ART) and are established within a few days after infection. Infected myeloid cells in the central nervous system (CNS) may contribute to the establishment of a CNS viral reservoir. The mature CD14(+) CD16(+) monocyte subset enters the CNS in response to chemokines, including CCL2. Entry of infected CD14(+) CD16(+) monocytes may lead to infection of other CNS cells, including macrophages or microglia and astrocytes, and to release of neurotoxic early viral proteins and additional cytokines...
October 24, 2017: MBio
https://www.readbyqxmd.com/read/29062860/in-utero-art-exposure-and-birth-and-early-growth-outcomes-among-hiv-exposed-uninfected-infants-attending-immunization-services-results-from-national-pmtct-surveillance-south-africa
#10
Vundli Ramokolo, Ameena E Goga, Carl Lombard, Tanya Doherty, Debra J Jackson, Ingunn Ms Engebretsen
BACKGROUND: Despite the recognized benefit of antiretroviral therapy (ART) for preventing and treating HIV, some studies have reported adverse birth outcomes with in utero ART exposure. We evaluated the effect of infant in utero HIV and ART exposure on preterm delivery (PTD), low birth weight (LBW), small for gestational age (SGA), and underweight for age (UFA) at 6 weeks. METHODS: We surveyed 6179 HIV-unexposed-uninfected (HUU) and 2599 HIV-exposed-uninfected (HEU) infants...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29062060/role-of-hiv-exposure-and-infection-in-relation-to-neonatal-gbs-disease-and-rectovaginal-gbs-carriage-a-systematic-review-and-meta-analysis
#11
Piet Cools, Janneke H H M van de Wijgert, Vicky Jespers, Tania Crucitti, Eduard J Sanders, Hans Verstraelen, Mario Vaneechoutte
Streptococcus agalactiae (GBS) is the leading cause worldwide of neonatal sepsis. We sought to assess to which extent HIV exposure of neonates is associated with GBS neonatal disease. Furthermore, we assessed to which extent HIV infection in women is associated with maternal rectovaginal GBS carriage, the single most important risk factor for GBS neonatal disease. We searched Pubmed, Embase, and Web of Science for studies assessing the association between neonatal GBS disease and HIV-status of the mother and studies that assessed the association between rectovaginal GBS colonization and HIV status in women...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29033797/white-matter-abnormalities-in-children-with-hiv-infection-and-exposure
#12
Marcin Jankiewicz, Martha J Holmes, Paul A Taylor, Mark F Cotton, Barbara Laughton, André J W van der Kouwe, Ernesta M Meintjes
Background: Due to changes in guidelines and access to treatment, more children start combination antiretroviral therapy (ART) in infancy. With few studies examining the long-term effects of perinatal HIV infection and early ART on neurodevelopment, much is still unknown about brain maturation in the presence of HIV and ART. Follow-up studies of HIV infected (HIV+) children are important for monitoring brain development in the presence of HIV infection and ART. Methods: We use diffusion tensor imaging (DTI) to examine white matter (WM) in 65 HIV+ and 46 control (HIV exposed uninfected (HEU) and HIV unexposed uninfected (HU)) 7-year-old children...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29028973/safety-and-immunogenicity-of-newborn-mva85a-vaccination-and-selective-delayed-bacille-calmette-guerin-bcg-for-infants-of-hiv-infected-mothers-a-phase-2-randomized-controlled-trial
#13
Elisa Nemes, Anneke C Hesseling, Michele Tameris, Katya Mauff, Katrina Downing, Humphrey Mulenga, Penelope Rose, Marieke van der Zalm, Sharon Mbaba, Danelle Van As, Willem A Hanekom, Gerhard Walzl, Thomas J Scriba, Helen McShane, Mark Hatherill
Background: Vaccination of HIV-infected infants with bacille Calmette-Guérin (BCG) is contraindicated. HIV-exposed newborns need a new tuberculosis (TB) vaccination strategy that protects against TB early in life; and avoids the potential risk of BCG disease until after HIV infection has been excluded. Methods: This double-blind randomized controlled trial compared newborn MVA85A prime vaccination (1 x10 8 PFU) vs. Candin® control, followed by selective deferred BCG vaccination at 8 weeks of age for HIV-uninfected infants, and 12 months follow-up for safety and immunogenicity...
September 26, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29016634/conventional-early-infant-diagnosis-in-lesotho-from-specimen-collection-to-results-usage-to-manage-patients-where-are-the-bottlenecks
#14
Appolinaire Tiam, Michelle M Gill, Heather J Hoffman, Anthony Isavwa, Mafusi Mokone, Matokelo Foso, Jeffrey T Safrit, Lynne M Mofenson, Thorkild Tylleskär, Laura Guay
INTRODUCTION: Early infant diagnosis is an important step in identifying children infected with HIV during the perinatal period or in utero. Multiple factors contribute to delayed antiretroviral treatment initiation for HIV-infected children, including delays in the early infant HIV diagnosis cascade. METHODS: We conducted a retrospective study to evaluate early infant diagnosis turnaround times in Lesotho. Trained staff reviewed records of HIV-exposed infants (aged-6-8 weeks) who received an HIV test during 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28991146/effect-of-caregiver-training-on-the-neurodevelopment-of-hiv-exposed-uninfected-children-and-caregiver-mental-health-a-ugandan-cluster-randomized-controlled-trial
#15
Michael J Boivin, Noeline Nakasujja, Itziar Familiar-Lopez, Sarah M Murray, Alla Sikorskii, Jorem Awadu, Cilly Shohet, Deborah Givon, Horacio Ruiseñor-Escudero, Elizabeth E Schut, Robert O Opoka, Judith K Bass
OBJECTIVE: Early childhood development programs typically combine healthy nutrition and cognitive stimulation in an integrated model. We separately delivered these 2 components in a cluster-randomized controlled trial to evaluate their comparative effectiveness in promoting healthy child development and caregiver mental health. This is the first study to do so for HIV-affected children and their infected mothers. METHODS: Two hundred twenty-one HIV-exposed but uninfected child (2-3 years old) and caregiver dyads in 18 geographic clusters in Eastern Uganda were randomized by cluster to receive biweekly individualized sessions of either (1) Mediational Intervention for Sensitizing Caregivers (MISC) training emphasizing cognitive stimulation or (2) Uganda Community Based Association for Child Welfare (UCOBAC) program that delivered health and nutrition training...
November 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28960594/birthweight-hiv-exposure-and-infant-feeding-as-predictors-of-malnutrition-in-botswanan-infants
#16
P Chalashika, C Essex, D Mellor, J A Swift, S Langley-Evans
BACKGROUND: A better understanding of the nutritional status of infants who are HIV-Exposed-Uninfected (HEU) and HIV-Unexposed-Uninfected (HUU) during their first 1000 days is key to improving population health, particularly in sub-Saharan Africa. METHODS: A cross-sectional study compared the nutritional status, feeding practices and determinants of nutritional status of HEU and HUU infants residing in representative selected districts in Botswana during their first 1000 days of life...
September 28, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28939554/abc294640-a-novel-sphingosine-kinase-2-inhibitor-induces-oncogenic-virus-infected-cell-autophagic-death-and-represses-tumor-growth
#17
Lu Dai, Aiping Bai, Charles D Smith, Paulo C Rodriguez, Fangyou Yu, Zhiqiang Qin
Kaposi's Sarcoma-associated herpesvirus (KSHV) is the etiologic agent of several malignancies, including Kaposi's Sarcoma (KS) and primary effusion lymphoma (PEL), which preferentially arise in HIV+ patients and lack effective treatment. Sphingosine kinase 2 (SphK2) is a key factor within sphingolipid metabolism, responsible for the conversion of pro-apoptotic ceramides to anti-apoptotic sphingosine-1-phosphate (S1P). We have previously demonstrated that targeting SphK2 using a novel selective inhibitor, ABC294640, leads to the accumulation of intracellular ceramides and induces apoptosis in KSHV-infected primary endothelial cells and PEL tumor cells but not in uninfected cells...
September 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28934432/intestinal-damage-and-inflammatory-biomarkers-in-human-immunodeficiency-virus-hiv-exposed-and-hiv-infected-zimbabwean-infants
#18
Andrew J Prendergast, Bernard Chasekwa, Sandra Rukobo, Margaret Govha, Kuda Mutasa, Robert Ntozini, Jean H Humphrey
Background: Disease progression is rapid in human immunodeficiency virus (HIV)-infected infants. Whether intestinal damage and inflammation underlie mortality is unknown. Methods: We measured plasma intestinal fatty acid binding protein (I-FABP), soluble CD14 (sCD14), interleukin 6 (IL-6), and C-reactive protein (CRP) at 6 weeks and 6 months of age in 272 HIV-infected infants who either died (cases) or survived (controls), and in 194 HIV-exposed uninfected (HEU) and 197 HIV-unexposed infants...
September 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28932223/editorial-immune-mechanisms-underlying-the-increased-morbidity-and-mortality-of-hiv-exposed-uninfected-heu-children
#19
EDITORIAL
Tessa Goetghebuer, Sarah L Rowland-Jones, Tobias R Kollmann
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28926411/lower-mitochondrial-dna-and-altered-mitochondrial-fuel-metabolism-in-hiv-exposed-uninfected-infants-in-cameroon
#20
Jennifer Jao, Kathleen M Powis, Brian Kirmse, Chunli Yu, Fanny Epie, Emmanuel Nshom, Elaine J Abrams, Rhoda S Sperling, Derek Leroith, Mitchell E Geffner, Irwin J Kurland, Hélène C F Côté
OBJECTIVE: Evaluate blood mitochondrial DNA (mtDNA) content in HIV/antiretroviral-exposed uninfected (HEU) vs. HIV-unexposed uninfected (HUU) infants and investigate differences in mitochondrial-related metabolites by exposure group. DESIGN: We enrolled a prospective cohort of HIV-infected and HIV-uninfected pregnant woman/infant pairs in Cameroon. METHODS: Dried blood spot mtDNA : nuclear DNA ratio was measured by monochrome multiplex quantitative polymerase chain reaction in HEU infants exposed to in-utero antiretrovirals and postnatal zidovudine (HEU-Z) or nevirapine (HEU-N), and in HUU infants at 6 weeks of life...
November 28, 2017: AIDS
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