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https://www.readbyqxmd.com/read/28422809/associations-between-dietary-intake-prior-to-6-months-of-age-and-rapid-weight-gain-among-hiv-exposed-uninfected-infants
#1
Daniela Neri, Fernanda C Oliveira, Aline M Carvalho, Gabriel A Somarriba, Gwendolyn B Scott, Tracie L Miller
INTRODUCTION: HIV-exposed, uninfected (HEU) infants are potentially at risk for cardiovascular disease due to in utero exposures. Feeding practices of the infant could compound this risk. However, few studies have evaluated dietary intake of HEU infants. We determined dietary factors associated with rapid weight gain (RWG) among HEU infants from birth to 6 months followed at the University of Miami HIV Screening Program. METHODS: In this cross-sectional analysis, logistic regression was used to determine dietary factors associated with RWG defined as a greater than 0...
April 18, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28413739/genetic-modulation-therapy-through-stem-cell-transplantation-for-human-immunodeficiency-virus-1-infection
#2
REVIEW
Varshil Mehta, Divya Chandramohan, Shivika Agarwal
Highly active anti-retroviral treatment has changed the dimensions of the outcomes for patients suffering from human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS). However, HIV infection is still an ailment which is spreading throughout the world extensively. Given the confinements of the present restorative methodologies and the non-availability of any strategic vaccination against HIV, there is a squeezing need to build a therapeutic treatment. Viral tropism for HIV includes CD4+ cells, macrophages, and microglial cells, and it is through binding with co-receptors C-C chemokine receptor type 5 (CCR5) and C-X-C chemokine receptor type 4 (CXCR4)...
March 13, 2017: Curēus
https://www.readbyqxmd.com/read/28398593/ccr5-expression-haplotype-and-immune-activation-in-protection-from-infection-in-hiv-exposed-uninfected-individuals-in-hiv-serodiscordant-relationships
#3
Shameem Z Jaumdally, Anabela Picton, Caroline T Tiemessen, Maria Paximadis, Heather B Jaspan, Hoyam Gamieldien, Lindi Masson, David Coetzee, Anna-Lise Williamson, Francesca Little, Pamela P Gumbi, Jo-Ann S Passmore
BACKGROUND: Several host factors have been implicated in resistance to HIV infection in individuals who remain HIV-seronegative despite exposure. In a cohort of HIV-serodiscordant heterosexual couples, we investigated interactions between systemic inflammation and T-cell activation in resistance to HIV infection. METHODS: Males and females in stable long-term relationships with either HIV-infected or uninfected partners were recruited, blood T-cell activation (CD38, HLA-DR, CCR5 and Ki67) and plasma cytokine concentrations were evaluated...
April 11, 2017: Immunology
https://www.readbyqxmd.com/read/28395844/effect-of-co-trimoxazole-on-mortality-in-hiv-exposed-but-uninfected-children-in-botswana-the-mpepu-study-a-double-blind-randomised-placebo-controlled-trial
#4
Shahin Lockman, Michael Hughes, Kate Powis, Gbolahan Ajibola, Kara Bennett, Sikhulile Moyo, Erik van Widenfelt, Jean Leidner, Kenneth McIntosh, Loeto Mazhani, Joseph Makhema, Max Essex, Roger Shapiro
BACKGROUND: Co-trimoxazole prophylaxis reduces mortality among HIV-infected children, but efficacy in HIV-exposed but uninfected (HEU) children in a non-malarial, low-breastfeeding setting with a low risk of mother-to-child transmission of HIV is unclear. METHODS: HEU children in Botswana were randomly assigned to receive co-trimoxazole (100 mg/20 mg once daily until age 6 months and 200 mg/40 mg once daily thereafter) or placebo from age 14-34 days to age 15 months...
May 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28395832/co-trimoxazole-for-hiv-exposed-uninfected-infants
#5
Ceri Evans, Andrew J Prendergast
No abstract text is available yet for this article.
May 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28381554/dna-mutagenic-activity-and-capacity-for-hiv-1-restriction-of-the-cytidine-deaminase-apobec3g-depends-on-whether-dna-or-rna-binds-to-tyrosine-315
#6
Bogdan Polevoda, Rebecca Joseph, Alan E Friedman, Ryan P Bennett, Rebecca Greiner, Thareendra De Zoysa, Ryan A Stewart, Harold C Smith
APOBEC3G (A3G) belongs to the AID/APOBEC protein family of cytidine deaminases (CDA) that bind to nucleic acids. A3G mutates the HIV genome by deamination of dC to dU, leading to accumulation of virus-inactivating mutations. Binding to cellular RNAs inhibits A3G binding to substrate single-stranded (ss) DNA and CDA activity. RNA and ssDNA bind to the same three A3G tryptic peptides (amino acids 181-194, 314-320, and 345-374) that form parts of a continuously exposed protein surface extending from the catalytic domain in the C-terminus of A3G to its N-terminus...
April 5, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28359325/early-versus-late-bcg-vaccination-in-hiv-1-exposed-infants-in-uganda-study-protocol-for-a-randomized-controlled-trial
#7
Victoria Nankabirwa, James K Tumwine, Olive Namugga, Thorkild Tylleskär, Grace Ndeezi, Bjarne Robberstad, Mihai G Netea, Halvor Sommerfelt
BACKGROUND: Bacillus Calmette-Guérin (BCG) vaccination may have nonspecific effects, i.e., effects on childhood morbidity and mortality that go beyond its effect on the risk of childhood tuberculosis (TB). Though the available scientific literature is mostly from observational studies, and is fraught with controversy, BCG vaccination at birth may protect infants in high-mortality populations against serious infections other than TB. Yet, other studies indicate that giving BCG later in infancy may modify immune responses to non-TB antigens and potentially enhance immunity, potentially also against tuberculosis (TB)...
March 31, 2017: Trials
https://www.readbyqxmd.com/read/28358737/delay-in-sexual-maturation-in-perinatally-hiv-infected-youth-is-mediated-by-poor-growth
#8
Andrea Bellavia, Paige L Williams, Linda A Dimeglio, Rohan Hazra, Mark J Abzug, Kunjal Patel, Denise L Jacobson, Russell B Van Dyke, Mitchell E Geffner
OBJECTIVE: To evaluate the association between HIV infection and sexual maturation, and mediation of this association by HIV effects on growth. DESIGN: Pooled data were analyzed from two longitudinal cohort studies, the IMPAACT P219/219C Study (1993-2007) and the PHACS Adolescent Master Protocol (2007-2015), including perinatally HIV-infected (PHIV) and HIV-exposed uninfected (PHEU) youth. METHODS: We evaluated age at sexual maturity among 2539 PHIV and PHEU adolescents based on annual physician-assessed pubertal staging measures...
March 29, 2017: AIDS
https://www.readbyqxmd.com/read/28351187/pneumococcal-conjugate-vaccine-in-hiv-infected-and-hiv-exposed-uninfected-children
#9
Sabelle Jallow, Shabir A Madhi
Incidence of invasive pneumococcal disease (IPD) among HIV-infected children is 20-40 fold greater compared to HIV-uninfected children, including among HIV-infected children on antiretroviral therapy (ART). Also, HIV-exposed, uninfected children have 2.7-fold greater risk of IPD compared to HIV-unexposed children. Areas covered: We reviewed studies identified on Pubmed database with the terms 'PCV' and 'HIV'; studies involving adults only were excluded. Expert commentary: While ART and pneumococcal conjugate vaccines (PCV) have reduced IPD morbidity and mortality in HIV-infected children, ART-naïve and immunosuppressed children have inferior immunogenicity to most PCV serotypes; highlighting the need for concomitant use of ART with PCV...
April 10, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28350554/high-sensitivity-and-specificity-of-the-cepheid-xpert%C3%A2-hiv-1-qualitative-point-of-care-test-among-newborns-in-botswana
#10
Maryanne Ibrahim, Sikhulile Moyo, Terence Mohammed, Lucy Mupfumi, Simani Gaseitsiwe, Kenneth Maswabi, Gbolahan Ajibola, Rebecca Gelman, Oganne Batlang, Maureen Sakoi, Chloe Auletta-Young, Joseph Makhema, Shahin Lockman, Roger L Shapiro
BACKGROUND: HIV point-of-care (POC) testing allows for early infant HIV diagnosis and treatment, but POC accuracy at birth and in the setting of antiretroviral prophylaxis for the prevention of mother-to-child HIV transmission (MTCT) is unknown. METHODS: We evaluated the Cepheid Xpert® HIV-1 Qual POC test against the Roche Taqman HIV-1 PCR platform using dried blood spots from 15 HIV-infected and 75 HIV-exposed uninfected newborns. These infants were screened for HIV at <96 hours of life at 5 hospital maternity wards in Botswana; all infants received post-exposure antiretroviral prophylaxis (PEP) and most mothers received 3-drug antiretroviral therapy in pregnancy and at delivery...
March 24, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28337206/cases-of-impaired-oxidative-burst-in-hiv-exposed-uninfected-infants-neutrophils-a-pilot-study
#11
Anicet Christel Maloupazoa Siawaya, Amandine Mveang-Nzoghe, Ofilia Mvoundza Ndjindji, Armel Mintsa Ndong, Paulin N Essone, Joel Fleury Djoba Siawaya
An increased risk of serious bacterial infections in HIV-exposed uninfected (HEU) infants has been demonstrated. Although neutrophils are essential for the protection of infants against bacterial infections, no study has investigated their profile in HEU infants to date. In this study, we assessed the function of neutrophils in HEU infants using the nitroblue tetrazolium reduction test. Among 25 HEU infants, 9 (36%) showed a reduced ability of their neutrophils to produce reactive oxygen species upon stimulation with bacteria...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28322573/blood-lead-levels-and-neurodevelopmental-function-in-perinatally-hiv-exposed-uninfected-children-in-a-us-based-longitudinal-cohort-study
#12
Katherine Tassiopoulos, Yanling Huo, Joseph Braun, Paige L Williams, Renee Smith, Ann Aschengrau, Sharon Nichols, Rohan Hazra, William A Meyer, Katherine Knapp, Nagamah S Deygoo, George R Seage Iii
BACKGROUND: While children's exposure to environmental lead in the U.S. has decreased, areas of elevated levels remain. Because lead exposure is a risk factor for developmental delays, it should be considered when studying neurodevelopmental effects of in-utero antiretroviral medication (ARV) exposure in the growing population of perinatally HIV-exposed, uninfected children (PHEU). We compared blood lead levels (BPb) in PHEU children enrolled in the Surveillance Monitoring of ART Toxicities (SMARTT) Study to U...
March 21, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28302082/growth-of-hiv-exposed-uninfected-compared-with-hiv-unexposed-zambian-children-a-longitudinal-analysis-from-infancy-to-school-age
#13
Anna Rosala-Hallas, Jonathan W Bartlett, Suzanne Filteau
BACKGROUND: Early growth of HIV-exposed, uninfected (HEU) children is poorer than that of their HIV-unexposed, uninfected (HUU) counterparts but there is little longitudinal or longer term information about the growth effects of early HIV exposure. METHODS: We performed a longitudinal analysis to compare growth of HEU and HUU infants and children using data from two cohort studies in Lusaka, Zambia. Initially 207 HUU and 200 HEU infants from the Breastfeeding and Postpartum Health (BFPH) study and 580 HUU and 165 HEU from the Chilenje Infant Growth, Nutrition and Infection Study (CIGNIS) had anthropometric measurements taken during infancy and again when school-aged, at which time 66 BFPH children and 326 CIGNIS children were available...
March 16, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28302043/cul5-and-apobec3g-polymorphisms-are-partially-implicated-in-hiv-1-infection-and-antiretroviral-therapy-in-a-brazilian-population
#14
Ronaldo Celerino da Silva, Antonio Victor Campos Coelho, Ronald Rodrigues Moura, Luiz Cláudio Arraes, Lucas André Cavalcanti Brandão, Rafael Lima Guimarães, Sérgio Crovella
BACKGROUND: Host restriction factors are cellular proteins able to diminish or block viral replication in a cell-specific way. Objetive and Method: We evaluated the distribution of selected SNPs in APOBEC3G (rs3736685, rs2294367) and CUL5 (rs7117111, rs7103534, rs11212495) genes, among 264 HIV-1 infected (HIV-1+) and 259 unexposed uninfected individuals from Northeast Brazil, looking for a possible association with susceptibility to HIV-1 infection, viral load, CD4+ T cell count and success of antiretroviral therapy...
March 15, 2017: Current HIV Research
https://www.readbyqxmd.com/read/28279683/long-term-pulmonary-complications-in-perinatally-hiv-infected-youth
#15
William T Shearer, Denise L Jacobson, Wendy Yu, George K Siberry, Murli Purswani, Suzanne Siminski, Laurie Butler, Erin Leister, Gwendolyn Scott, Russell B Van Dyke, Ram Yogev, Mary E Paul, Ana Puga, Andrew A Colin, Meyer Kattan
BACKGROUND: Increased incidence and prevalence of asthma have been documented for perinatally HIV-infected (HIV) youth 10-21 years of age (youth) compared to HIV-exposed uninfected (HEU) youth. OBJECTIVE: To perform objective pulmonary function tests (PFTs) in HIV and HEU youth with and without diagnosed asthma. METHOD: Asthma was determined in 370 participants (218 HIV, 152 HEU) by chart review and self-report at 13 sites. Interpretable PFTs (188 HIV, 132 HEU) were classified as obstructive, restrictive, or normal and reversibility was determined after bronchodilator inhalation...
March 6, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28279682/lymphocyte-subsets-in-hiv-exposed-uninfected-infants-and-hiv-unexposed-uninfected-infants
#16
Yanling Huo, Kunjal Patel, Gwendolyn B Scott, Russell B Van Dyke, George K Siberry, Sandra K Burchett, William T Shearer
No abstract text is available yet for this article.
March 6, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28278563/development-assessment-of-hiv-exposed-children-aged-6-18-months-a-cohort-study-from-north-india
#17
Remya Rajan, Anju Seth, Sharmila B Mukherjee, Jagdish Chandra
HIV exposed children are vulnerable to developmental delay irrespective of their HIV status due to combined effect of risk factors like poverty, prenatal drug exposure, stress and chronic illness in family and malnutrition. This cohort study assessed the development of 50 HIV exposed children aged 6-18 months at a Pediatric Centre of Excellence in HIV care in India. The development was assessed using Development Assessment Scale for Indian Infants (DASII) at enrolment, 3 and 6 months later. The development quotient (DQ) scores and proportion of children with developmental delay (DQ ≤ 70) were compared among two sub-groups, HIV infected (HI) and HIV exposed uninfected (HEU) children...
March 5, 2017: AIDS Care
https://www.readbyqxmd.com/read/28270571/hiv-1-tat-primes-and-activates-microglial-nlrp3-inflammasome-mediated-neuroinflammation
#18
Ernest T Chivero, Ming-Lei Guo, Palsamy Periyasamy, Ke Liao, Shannon E Callen, Shilpa Buch
Neuroinflammation associated with HIV-1 infection is a problem affecting ∼50% of HIV-infected individuals. NLR family pyrin domain containing 3 (NLRP3) inflammasome has been implicated in HIV-induced microglial activation, but the mechanism(s) remain unclear. Because HIV-1 Transactivator of Transcription (Tat) protein continues to be present despite antiretroviral therapy and activates NF-kB, we hypothesized that Tat could prime the NLRP3 inflammasome. We found a dose- and time-dependent induction of NLRP3 expression in microglia exposed to Tat compared with control...
March 29, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28262752/highly-exposed-hiv-1-seronegative-female-commercial-sex-workers-sustain-in-their-genital-mucosa-increased-frequencies-of-tolerogenic-myeloid-and-regulatory-t-cells
#19
V Thibodeau, L Fourcade, A-C Labbé, M Alary, F Guédou, J Poudrier, M Roger
We and others have shown that HIV-1 highly-exposed seronegative (HESN) female commercial sex workers (CSWs) maintain low genital inflammatory conditions to prevent HIV infection. HIV-1 interacts with toll-like receptors (TLR)-7/8 to induce interferon (IFN)-α, an important antiviral and immunomodulatory cytokine, which act together with interleukin (IL)-10, human leukocyte antigen (HLA)-G and immunoglobulin-like transcript (ILT)-4 to initiate a "tolerogenic/regulatory" anti-inflammatory loop. In view of further unravelling elements associated with natural immunity to HIV-1, we have characterised TLR-7, IFN-α, IL-10, HLA-G and ILT-4 expression profiles in the genital tract of female CSWs and HIV-1-uninfected non-CSWs from Benin...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28241075/the-transcriptome-of-hiv-1-infected-intestinal-cd4-t-cells-exposed-to-enteric-bacteria
#20
Alyson C Yoder, Kejun Guo, Stephanie M Dillon, Tzu Phang, Eric J Lee, Michael S Harper, Karen Helm, John C Kappes, Christina Ochsenbauer, Martin D McCarter, Cara C Wilson, Mario L Santiago
Global transcriptome studies can help pinpoint key cellular pathways exploited by viruses to replicate and cause pathogenesis. Previous data showed that laboratory-adapted HIV-1 triggers significant gene expression changes in CD4+ T cell lines and mitogen-activated CD4+ T cells from peripheral blood. However, HIV-1 primarily targets mucosal compartments during acute infection in vivo. Moreover, early HIV-1 infection causes extensive depletion of CD4+ T cells in the gastrointestinal tract that herald persistent inflammation due to the translocation of enteric microbes to the systemic circulation...
February 2017: PLoS Pathogens
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