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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
#1
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/28279683/long-term-pulmonary-complications-in-perinatally-hiv-infected-youth
#2
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
#3
Yanling Huo, Kunjal Patel, Gwendolyn B Scott, Russell B Van Dyke, George K Siberry, Sandra K Burchett, William T Shearer
HEU infants had higher CD19 B cell counts and % than HUU infants after the first 3 months of life, suggesting a B cell immune response with intrauterine exposure to maternal HIV or other pathogens.
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
#4
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/28272523/controlling-self-assembly-of-diphenylalanine-peptides-at-high-ph-using-heterocyclic-capping-groups
#5
Adam D Martin, Jonathan P Wojciechowski, Andrew B Robinson, Celine Heu, Christopher J Garvey, Julian Ratcliffe, Lynne J Waddington, James Gardiner, Pall Thordarson
Using small angle neutron scattering (SANS), it is shown that the existence of pre-assembled structures at high pH for a capped diphenylalanine hydrogel is controlled by the selection of N-terminal heterocyclic capping group, namely indole or carbazole. At high pH, changing from a somewhat hydrophilic indole capping group to a more hydrophobic carbazole capping group results in a shift from a high proportion of monomers to self-assembled fibers or wormlike micelles. The presence of these different self-assembled structures at high pH is confirmed through NMR and circular dichroism spectroscopy, scanning probe microscopy and cryogenic transmission electron microscopy...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28198792/child-growth-according-to-maternal-and-child-hiv-status-in-zimbabwe
#6
Adetayo O Omoni, Robert Ntozini, Ceri Evans, Andrew J Prendergast, Lawrence H Moulton, Parul S Christian, Jean H Humphrey
BACKGROUND: Growth failure is common among HIV-infected infants, but there are limited data on the effects of HIV exposure or timing of HIV acquisition on growth. METHODS: 14110 infants were enrolled in the ZVITAMBO trial in Zimbabwe before the availability of antiretroviral therapy (ART) or co-trimoxazole. Anthropometric measurements were taken from birth through 12-24 months of age. Growth outcomes were compared between 5 groups of children: HIV-infected in utero (IU), intrapartum (IP) or postnatally (PN); HIV-exposed uninfected (HEU); and HIV-unexposed...
February 13, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28193553/an-investigation-of-reactivity-effect-due-to-inadvertent-filling-of-the-irradiation-channels-with-water-in-nirr-1-nigeria-research-reactor-1
#7
U Iliyasu, Y V Ibrahim, Sadiq Umar, S A Agbo, Y Jibrin
Investigation of reactivity variation due to flooding of the irradiation channels of Nigeria Research Reactor (NIRR-1) a low power miniature neutron source reactor (MNSR) located at the Centre for Energy Research and Training, Ahmadu Bello University, Zaria Nigeria using the MCNP code for High Enrich Uranium (HEU) and Low Enrich Uranium (LEU) core has been simulated in this present study. In this work, the excess reactivity worth of flooding HEU core for 1 inner, 2 inner, 3 inner, 4 inner and all inner are 0...
February 9, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28081048/a-prospective-cohort-study-of-common-childhood-infections-in-south-african-hiv-exposed-uninfected-and-hiv-unexposed-infants
#8
Amy L Slogrove, Monika M Esser, Mark F Cotton, David P Speert, Tobias R Kollmann, Joel Singer, Julie A Bettinger
BACKGROUND: Much evidence of HIV-exposed uninfected (HEU) infant infectious morbidity predates availability of maternal combination antiretroviral therapy and does not control for universal risk factors (preterm birth, low birth weight, suboptimal breastfeeding and poverty). METHODS: This prospective cohort study identified HIV-infected and HIV-uninfected mothers and their newborns from South African community midwife unit. The primary outcome, infectious cause hospitalization or death before 6 months of age, was compared between HEU and HIV-unexposed (HU) infants and classified for type and severity using validated study-specific case definitions...
February 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28079828/vaccination-with-10-valent-pneumococcal-conjugate-vaccine-in-infants-according-to-hiv-status
#9
RANDOMIZED CONTROLLED TRIAL
Shabir A Madhi, Anthonet Koen, Lisa Jose, Nadia van Niekerk, Peter V Adrian, Clare Cutland, Nancy François, Javier Ruiz-Guiñazú, Juan-Pablo Yarzabal, Marta Moreira, Dorota Borys, Lode Schuerman
BACKGROUND: Phase III, open-label, single-center, controlled study in South Africa (ClinicalTrials.gov: NCT00829010) to evaluate immunogenicity, reactogenicity, and safety of the 10-valent pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) in human immunodeficiency virus (HIV)-infected (HIV+), HIV-exposed-uninfected (HEU), and HIV-unexposed-uninfected (HUU) children. METHODS: Children stratified by HIV status received PHiD-CV primary vaccination (age 6/10/14 weeks; coadministered with routine childhood vaccines) and booster dose (age 9-10 months)...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28011912/cmv-acquisition-and-inflammation-in-hiv-exposed-uninfected-zimbabwean-infants
#10
Ceri Evans, Bernard Chasekwa, Sandra Rukobo, Margaret Govha, Kuda Mutasa, Robert Ntozini, Jean H Humphrey, Andrew J Prendergast
Cytomegalovirus acquisition and inflammation were evaluated in 231 HIV-exposed uninfected (HEU) and 100 HIV-unexposed Zimbabwean infants at age 6 weeks. HEU and HIV-unexposed infants had a similarly high prevalence of CMV (81.4% vs. 74.0%, respectively; P=0.14), but HEU infants had higher CMV viral loads (P=0.005) and >2-fold higher CRP concentrations (P<0.0001). CMV-positive HEU infants had higher CRP than CMV-negative HEU infants; this association disappeared after adjusting for maternal HIV viral load...
December 23, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27999576/optimizing-research-methods-to-understand-hiv-exposed-uninfected-infant-and-child-morbidity-report-of-the-second-heu-infant-and-child-workshop
#11
Amy L Slogrove, Moherndran Archary, Mark F Cotton
No abstract text is available yet for this article.
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27915254/ompf-of-pectobacterium-carotovorum-subsp-carotovorum-pcc3-is-required-for-carocin-d-sensitivity
#12
Jeong-A Lim, Jisoo Hong, Jonguk Kim, Sunggi Heu, Eunjung Roh
Carocin D is a bacteriocin produced by Pectobacterium carotovorum subsp. carotovorum Pcc21. Carocin D inhibits the growth of P carotovorum subsp. carotovorum and closely related strains. Pectobacterium carotovorum subsp. carotovorum is a causative bacterium for soft rot disease and leads to severe economic losses. Bacteriocins recognize and interact with a specific membrane protein of target bacteria as a receptor. To identify the receptor responsible for carocin D recognition, mutants that underwent a phenotypic change from carocin D sensitivity to carocin D insensitivity were screened...
December 2016: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/27904465/simultaneous-detection-of-three-bacterial-seed-borne-diseases-in-rice-using-multiplex-polymerase-chain-reaction
#13
In Jeong Kang, Mi-Hyung Kang, Tae-Hwan Noh, Hyeong Kwon Shim, Dong Bum Shin, Suggi Heu
Burkholderia glumae (bacterial grain rot), Xanthomonas oryzae pv. oryzae (bacterial leaf blight), and Acidovorax avenae subsp. avenae (bacterial brown stripe) are major seedborne pathogens of rice. Based on the 16S and 23S rDNA sequences for A. avenae subsp. avenae and B. glumae, and transposase A gene sequence for X. oryzae pv. oryzae, three sets of primers had been designed to produce 402 bp for B. glumae, 490 bp for X. oryzae, and 290 bp for A. avenae subsp. avenae with the 63°C as an optimum annealing temperature...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27899925/increased-risk-of-group-b-streptococcus-invasive-infection-in-hiv-exposed-but-uninfected-infants-a-review-of-the-evidence-and-possible-mechanisms
#14
REVIEW
Nicolas Dauby, Mustapha Chamekh, Pierrette Melin, Amy L Slogrove, Tessa Goetghebuer
Group B Streptococcus (GBS) is a major cause of neonatal sepsis and mortality worldwide. Studies from both developed and developing countries have shown that HIV-exposed but uninfected (HEU) infants are at increased risk of infectious morbidity, as compared to HIV-unexposed uninfected infants (HUU). A higher susceptibility to GBS infections has been reported in HEU infants, particularly late-onset diseases and more severe manifestations of GBS diseases. We review here the possible explanations for increased susceptibility to GBS infection...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27898591/tenofovir-exposure-in-utero-and-linear-growth-in-hiv-exposed-uninfected-infants
#15
Stanzi M le Roux, Jennifer Jao, Kirsty Brittain, Tamsin K Phillips, Seun Olatunbosun, Agnes Ronan, Allison Zerbe, Elaine J Abrams, Landon Myer
OBJECTIVE: Tenofovir (TDF) affects bone health and is widely used in pregnancy but data are limited on the effects of TDF exposure in utero. We examined the association between duration of in-utero TDF exposure and linear growth in HIV-exposed, uninfected (HEU) infants. DESIGN: A prospective cohort of pregnant women initiating TDF-containing regimens at primary care services in Cape Town, South Africa, were enrolled and followed with their breastfeeding infants through 12 months postpartum...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27861788/phenotypically-resembling-myeloid-derived-suppressor-cells-are-increased-in-children-with-hiv-and-exposed-infected-with-mycobacterium-tuberculosis
#16
Nelita Du Plessis, Ruschca Jacobs, Andrea Gutschmidt, Zhuo Fang, Paul D van Helden, Manfred B Lutz, Anneke C Hesseling, Gerhard Walzl
Increased disease susceptibility during early life has been linked to immune immaturity, regulatory T-cell/TH2 immune biasing and hyporesponsiveness. The contribution of myeloid derived suppressor cells (MDSCs) remains uninvestigated. Here, we assessed peripheral MDSC in HIV-infected and -uninfected children with tuberculosis (TB) disease before, during and after TB treatment, along with matched household contacts (HHCs), HIV-exposed, -infected and -uninfected children without recent TB exposure. Serum analytes and enzymes associated with MDSC accumulation/activation/function were measured by colorimetric- and fluorescence arrays...
January 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/27847176/association-of-serum-bactericidal-antibody-and-opsonic-antibody-levels-after-neisseria-meningitidis-serogroup-c-conjugate-vaccine-in-brazilian-children-and-adolescents-infected-or-not-infected-with-hiv
#17
Wânia F Pereira-Manfro, Raquel M Alvino, Aline C Cruz, Giselle P Silva, Raquel B N Castro, Bianca Ferreira, Daniella M Barreto, Ana Cristina C Frota, Cristina B Hofer, Lucimar G Milagres
Neisseria meningitidis serogroup C (MenC) is the main causative agent of meningitis in Brazil. HIV infection affects the quality of the immune system. HIV(+) children have an increased risk of infection to encapsulated bacteria such as N. meningitidis. We evaluated the opsonic antibody (OPA) levels and its correlation with serum bactericidal antibody (SBA) levels induced by one and two doses of a MenC conjugate vaccine in children and adolescents HIV(+) and HIV-exposed but uninfected children (HEU) group. Overall the data show the importance of two doses of vaccine for HIV(+) individuals...
December 7, 2016: Vaccine
https://www.readbyqxmd.com/read/27805806/protein-binders-specific-for-immunoglobulin-g-from-different-species-for-immunoassays-and-multiplex-imaging
#18
Sukyo Jeong, Woosung Heu, Jong-Won Kim, Hak-Sung Kim
An immunoassay is the most widely used method for analyzing a variety of analytes based on antigen-antibody interactions in the biological and medical sciences. However, the use of secondary antibodies has certain shortcomings, such as a high cost, cross-reactivity, and loss of binding affinity during labeling. Herein, we present the development of repebodies specifically binding to immunoglobulin G with a different origin, which is a small-sized nonantibody scaffold composed of leucine-rich repeat (LRR) modules, for use in immunoassays and imaging...
December 6, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27798548/growth-at-2-years-of-age-in-hiv-exposed-uninfected-children-in-the-united-states-by-trimester-of-maternal-antiretroviral-initiation
#19
Denise L Jacobson, Kunjal Patel, Paige L Williams, Mitchell E Geffner, George K Siberry, Linda A DiMeglio, Marilyn J Crain, Ayesha Mirza, Janet S Chen, Elizabeth McFarland, Deborah Kacanek, Margarita Silio, Kenneth Rich, William Borkowsky, Russell B Van Dyke, Tracie L Miller
BACKGROUND: Abnormal childhood growth may affect future health. Maternal tenofovir (TFV) use was associated with lower body length and head circumference at 1 year of age in HIV-exposed uninfected (HEU) US children. METHODS: We studied 509 HEU children in the US-based Surveillance Monitoring of Antiretroviral Therapy Toxicities cohort whose HIV-infected mothers were not using antiretrovirals at the last menstrual period and began combination antiretroviral therapy (cART) in pregnancy (cART initiators)...
February 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27789837/direct-frequency-comb-measurement-of-od-co-%C3%A2-doco-kinetics
#20
B J Bjork, T Q Bui, O H Heckl, P B Changala, B Spaun, P Heu, D Follman, C Deutsch, G D Cole, M Aspelmeyer, M Okumura, J Ye
The kinetics of the hydroxyl radical (OH) + carbon monoxide (CO) reaction, which is fundamental to both atmospheric and combustion chemistry, are complex because of the formation of the hydrocarboxyl radical (HOCO) intermediate. Despite extensive studies of this reaction, HOCO has not been observed under thermal reaction conditions. Exploiting the sensitive, broadband, and high-resolution capabilities of time-resolved cavity-enhanced direct frequency comb spectroscopy, we observed deuteroxyl radical (OD) + CO reaction kinetics and detected stabilized trans-DOCO, the deuterated analog of trans-HOCO...
October 28, 2016: Science
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