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https://www.readbyqxmd.com/read/28521860/-hiv-pre-exposure-prophylaxis-prep-the-three-should-not-prevent-seing-the-forest
#1
Jordi Casabona
No abstract text is available yet for this article.
May 15, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/28521215/adaptation-of-hiv-1-to-cells-with-low-expression-of-the-ccr5-coreceptor
#2
Nicole Espy, Beatriz Pacheco, Joseph Sodroski
The binding of the human immunodeficiency virus (HIV-1) envelope glycoprotein (Env) trimer ((gp120/gp41)3) to the receptors CD4 and CCR5 triggers virus entry into host cells. To identify Env regions that respond to CCR5 binding, HIV-1 was serially passaged on a CD4-positive canine cell line expressing progressively lower levels of CCR5. HIV-1 replication was observed in cells expressing ~1300 CCR5 molecules/cell. Env changes that conferred this low-CCR5 replication phenotype were located outside of the known CCR5-binding region of the gp120 Env subunit and did not apparently increase CCR5 binding affinity...
May 15, 2017: Virology
https://www.readbyqxmd.com/read/28520618/defining-a-cut-off-for-atazanavir-in-hair-samples-associated-with-virological-failure-among-adolescents-failing-second-line-antiretroviral-treatment
#3
Tariro Dianah Chawana, Monica Gandhi, Kusum Nathoo, Bernard Ngara, Alexander Louie, Howard Horng, David Katzenstein, John Metcalfe, Charles Fungai Brian Nhachi
BACKGROUND: Adequate antiretroviral exposure is crucial for virological suppression. We assessed the relationship between atazanavir hair levels with self-reported adherence, virological outcomes, and the effect of a home-based adherence intervention in HIV-infected adolescents failing 2-line antiretroviral treatment in Zimbabwe. METHODS: HIV-infected adolescents on atazanavir/ritonavir-based 2-line treatment for ≥6 months with viral load (VL) >1,000 copies/ml were randomised to either standard care (control) or standard care plus modified directly administered antiretroviral therapy (mDAART) (intervention)...
May 17, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28513816/italian-guidelines-for-the-use-of-antiretroviral-agents-and-the-diagnostic-clinical-management-of-hiv-1-infected-persons-update-2016
#4
Andrea Antinori, Antonio Di Biagio, Simone Marcotullio, Massimo Andreoni, Antonio Chirianni, Antonella d'Arminio Monforte, Massimo Galli, Francesco Mazzotta, Cristina Mussini, Massimo Puoti, Adriano Lazzarin
The Italian Society of Infectious and Tropical Diseases (SIMIT) of the Technical Health Committee, Ministry of Health (Sections L and M) of Italy have supported recommendations for the Italian guidelines for the use of antiretroviral agents and the diagnostic-clinical management of HIV-1 infected persons. This publication summarizes the latest updates to the 2016 version of the Italian Guidelines for the management of HIV-1 infected patients and the use of antiretroviral drugs. In particular, new recommendations were released concerning the following topics: estimate of the HIV continuum of care in Italy, optimal timing and preferred drug combinations for starting antiretroviral therapy, treatment optimization, and pre-exposure prophilaxis (PrEP)...
April 2017: New Microbiologica
https://www.readbyqxmd.com/read/28511409/knowledge-attitude-and-practice-of-healthcare-managers-to-medical-waste-management-and-occupational-safety-practices-findings-from-southeast-nigeria
#5
Okechukwu Bonaventure Anozie, Lucky Osaheni Lawani, Justus Ndulue Eze, Emmanuel Johnbosco Mamah, Robinson Chukwudi Onoh, Emeka Onwe Ogah, Daniel Akuma Umezurike, Rita Onyinyechi Anozie
INTRODUCTION: Awareness of appropriate waste management procedures and occupational safety measures is fundamental to achieving a safe work environment, and ensuring patient and staff safety. AIM: This study was conducted to assess the attitude of healthcare managers to medical waste management and occupational safety practices. MATERIALS AND METHODS: This was a cross-sectional study conducted among 54 hospital administrators in Ebonyi state...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28510998/new-onset-type-2-diabetes-mellitus-among-patients-receiving-hiv-care-at-newlands-clinic-harare-zimbabwe-retrospective-cohort-analysis
#6
Cleophas Chimbetete, Catrina Mugglin, Tinei Shamu, Bindu Kalesan, Barbara Bertisch, Matthias Egger, Olivia Keiser
OBJECTIVE: To assess the incidence and associated factors of Type 2 Diabetes Mellitus (T2DM) among people living with HIV (PLHIV) in Zimbabwe. METHODS: We analyzed data of all HIV-infected patients older than 16 years who attended Newlands Clinic between March 1, 2004 and April 29, 2015. The clinic considers patients whose random blood sugar is higher than 11.1 mmol/L and which is confirmed by a fasting blood sugar higher than 7.0 mmol/L to have T2DM. T2DM is also diagnosed in symptomatic patients who have a RBS >11...
May 16, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28507772/clinically-significant-depressive-symptoms-and-sexual-behaviour-among-men-who-have-sex-with-men
#7
Ada R Miltz, Alison J Rodger, Janey Sewell, Andrew Speakman, Andrew N Phillips, Lorraine Sherr, Richard J Gilson, David Asboe, Nneka C Nwokolo, Amanda Clarke, Mark M Gompels, Sris Allan, Simon Collins, Fiona C Lampe
BACKGROUND: The relationship between depression and sexual behaviour among men who have sex with men (MSM) is poorly understood. AIMS: To investigate prevalence and correlates of depressive symptoms (Patient Health Questionnaire-9 score ≥10) and the relationship between depressive symptoms and sexual behaviour among MSM reporting recent sex. METHOD: The Attitudes to and Understanding of Risk of Acquisition of HIV (AURAH) is a cross-sectional study of UK genitourinary medicine clinic attendees without diagnosed HIV (2013-2014)...
May 2017: BJPsych Open
https://www.readbyqxmd.com/read/28503933/highly-hiv-exposed-seronegative-men-have-lower-mucosal-innate-immune-reactivity
#8
Jennifer A Fulcher, Laura Romas, Jennifer C Hoffman, Julie Elliott, Terry Saunders, Adam Burgener, Peter A Anton, Otto O Yang
Risk of HIV acquisition varies, and some individuals are highly HIV-1-exposed yet persistently seronegative (HESN). The immunologic mechanisms contributing to this phenomenon are an area of intense interest. As immune activation and inflammation facilitate disease progression in HIV-1-infected persons, and gastrointestinal-associated lymphoid tissue (GALT) is a highly susceptible site for transmission, we hypothesized that reduced gut mucosal immune reactivity may contribute to reduced HIV-1 susceptibility in HESN men with a history of numerous rectal sexual exposures...
May 13, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28499845/exploring-resistance-pathways-for-first-generation-ns3-4a-protease-inhibitors-boceprevir-and-telaprevir-using-bayesian-network-learning
#9
Lize Cuypers, Pieter Libin, Yoeri Schrooten, Kristof Theys, Velia Chiara Di Maio, Valeria Cento, Maja M Lunar, Frederik Nevens, Mario Poljak, Francesca Ceccherini-Silberstein, Ann Nowé, Kristel Van Laethem, Anne-Mieke Vandamme
Resistance-associated variants (RAVs) have been shown to influence treatment response to direct-acting antivirals (DAAs) and first generation NS3/4A protease inhibitors (PIs) in particular. Interpretation of hepatitis C virus (HCV) genotypic drug resistance remains a challenge, especially in patients who previously failed DAA therapy and need to be retreated with a second DAA based regimen. Bayesian network (BN) learning on HCV sequence data from patients treated with DAAs could provide insight in resistance pathways against PIs for HCV subtypes 1a and 1b, in a similar way as applied before for HIV...
May 9, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28498191/impact-of-facility-based-mother-support-groups-on-retention-in-care-and-pmtct-outcomes-in-rural-zimbabwe-the-epaz-cluster-randomized-controlled-trial
#10
Geoff Foster, Joanna Orne-Gliemann, Hélène Font, Abigail Kangwende, Vhumani Magezi, Tonderai Sengai, Simba Rusakaniko, Bridget Shumba, Pemberai Zambezi, Talent Maphosa
BACKGROUND: Prevention of mother-to-child transmission elimination goals are hampered by low rates of retention in care. The Eliminating Paediatric AIDS in Zimbabwe project assessed whether mother support groups (MSGs) improve rates of retention in care of HIV-exposed infants and their HIV-positive mothers, and maternal and infant outcomes. METHODS: The study involved 27 rural clinics in eastern Zimbabwe. MSGs were established in 14 randomly selected clinics and met every 2 weeks coordinated by volunteer HIV-positive mothers...
June 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28498188/the-impact-of-structured-mentor-mother-programs-on-presentation-for-early-infant-diagnosis-testing-in-rural-north-central-nigeria-a-prospective-paired-cohort-study
#11
Nadia A Sam-Agudu, Habib O Ramadhani, Christopher Isah, Salome Erekaha, Chinenye Fan-Osuala, Udochisom Anaba, Ebunoluwa A Adejuyigbe, Manhattan Charurat
BACKGROUND: Early infant diagnosis (EID) by 2 months of age is an important prevention of mother-to-child cascade step that serves as an early postpartum indicator of program success. Uptake and timely presentation for infant HIV diagnosis are significant challenges in resource-limited settings. Few studies on maternal peer support (PS) have demonstrated impact on EID. The MoMent study evaluated the impact of structured PS on timely presentation for EID testing in rural North-Central Nigeria...
June 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28498187/the-impact-of-structured-mentor-mother-programs-on-6-month-postpartum-retention-and-viral-suppression-among-hiv-positive-women-in-rural-nigeria-a-prospective-paired-cohort-study
#12
Nadia A Sam-Agudu, Habib O Ramadhani, Christopher Isah, Udochisom Anaba, Salome Erekaha, Chinenye Fan-Osuala, Hadiza Galadanci, Manhattan Charurat
BACKGROUND: Peer support (PS) has reportedly improved Prevention of mother-to-child transmission (PMTCT) outcomes in high HIV-burden settings; however, evidence of impact on retention in care is limited. Retention in care implies consistent engagement and treatment adherence. The MoMent study evaluated the impact of structured vs unstructured PS on postpartum retention and viral load suppression among rural Nigerian women. METHODS: A total of 497 HIV-positive pregnant women were consecutively enrolled at 10 primary health care centers with structured mentor mother (MM) support, and at 10 pair-matched primary health care centers with routine, ad hoc PS...
June 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28495611/hiv-1-tat-protein-enhances-sensitization-to-methamphetamine-by-affecting-dopaminergic-function
#13
James P Kesby, Julia A Najera, Benedetto Romoli, Yiding Fang, Liana Basova, Amanda Birmingham, Maria Cecilia G Marcondes, Davide Dulcis, Svetlana Semenova
Methamphetamine abuse is common among humans with immunodeficiency virus (HIV). The HIV-1 regulatory protein TAT induces dysfunction of mesolimbic dopaminergic systems which may result in impaired reward processes and contribute to methamphetamine abuse. These studies investigated the impact of TAT expression on methamphetamine-induced locomotor sensitization, underlying changes in dopamine function and adenosine receptors in mesolimbic brain areas and neuroinflammation (microgliosis). Transgenic mice with doxycycline-induced TAT protein expression in the brain were tested for locomotor activity in response to repeated methamphetamine injections and methamphetamine challenge after a 7-day abstinence period...
May 8, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28492395/hiv-prevention-response-to-pre-exposure-prophylaxis-failure-with-tenofovir-disoproxil
#14
Julie Fox, Simon Collins
No abstract text is available yet for this article.
June 1, 2017: AIDS
https://www.readbyqxmd.com/read/28490588/induction-of-a-tier-1-like-phenotype-in-diverse-tier-2-isolates-by-agents-that-guide-hiv-1-env-to-perturbation-sensitive-non-native-states
#15
Jacklyn Johnson, Yinjie Zhai, Hamid Salimi, Nicole Espy, Noah Eichelberger, Orlando DeLeon, Yunxia O'Malley, Joel Courter, Amos B Smith, Navid Madani, Joseph Sodroski, Hillel Haim
The envelope glycoproteins (Envs) on the surface of HIV-1 particles are targeted by host antibodies. Primary HIV-1 isolates demonstrate different global sensitivities to antibody neutralization; Tier-1 isolates are sensitive whereas Tier-2 isolates are more resistant. Single-site mutations in Env can convert Tier-2 into Tier-1-like viruses. We hypothesized that such global change in neutralization sensitivity results from weakening of intra-molecular interactions that maintain Env integrity. Three strategies commonly applied to perturb protein structure were tested for their effect on global neutralization sensitivity; exposure to low temperature, Env-activating ligands and a chaotropic agent...
May 10, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28490585/crosslinking-of-a-cd4-mimetic-miniprotein-with-hiv-1-env-gp140-alters-kinetics-and-specificities-of-antibody-responses-against-hiv-1-env-in-macaques
#16
Xiaoying Shen, Willy M Bogers, Nicole L Yates, Guido Ferrari, Antu K Dey, William T Williams, Frederick H Jaeger, Kevin Wiehe, Sheetal Sawant, S Munir Alam, Celia C LaBranche, David C Montefiori, Loic Martin, Indresh Srivastava, Jonathan Heeney, Susan W Barnett, Georgia D Tomaras
Evaluation of the epitope specificities, location (systemic, mucosal) and effector function of antibodies elicited by novel HIV-1 immunogens engineered to improve exposure of specific epitopes is critical for HIV-1 vaccine development. Utilizing an array of humoral assays, we evaluated the magnitude, epitope specificity, avidity and function of systemic and mucosal immune responses elicited by a vaccine regimen containing Env cross-linked to a CD4 mimetic miniprotein (gp140-M64U1) in rhesus macaques. Crosslinking of gp140 Env with M64U1 resulted in an earlier increase in both the magnitude and avidity of the IgG binding response compared to Env protein alone...
May 10, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28489856/randomized-trial-of-stopping-or-continuing-art-among-postpartum-women-with-pre-art-cd4-%C3%A2-400-cells-mm3
#17
Judith S Currier, Paula Britto, Risa M Hoffman, Sean Brummel, Gaerolwe Masheto, Esau Joao, Breno Santos, Linda Aurpibul, Marcelo Losso, Marie F Pierre, Adriana Weinberg, Devasena Gnanashanmugam, Nahida Chakhtoura, Karin Klingman, Renee Browning, Anne Coletti, Lynne Mofenson, David Shapiro, Jose Pilotto
BACKGROUND: Health benefits of postpartum antiretroviral therapy (ART) for human immunodeficiency virus (HIV) positive women with high CD4+ T-counts have not been assessed in randomized trials. METHODS: Asymptomatic, HIV-positive, non-breastfeeding women with pre-ART CD4+ T-cell counts ≥ 400 cells/mm3 started on ART during pregnancy were randomized up to 42 days after delivery to continue or discontinue ART. Lopinavir/ritonavir plus tenofovir/emtricitabine was the preferred ART regimen...
2017: PloS One
https://www.readbyqxmd.com/read/28487144/intestinal-absorption-mechanisms-of-2-deoxy-2-%C3%AE-fluoro-4-azidocytidine-a-cytidine-analog-for-aids-treatment-and-its-interaction-with-p-glycoprotein-multidrug-resistance-associated-protein-2-and-breast-cancer-resistance-protein
#18
Yixian Liu, Bingjie Liu, Yan Zhang, Youmei Peng, Chenzheng Huang, Ning Wang, Jinhua Jiang, Qingduan Wang, Junbiao Chang
2'-Deoxy-2'-β-fluoro-4'-azidocytidine (FNC), a cytidine analog, has attracted great interest because of its potent activity against wild-type and multidrug-resistant HIV. The purpose of current study was to investigate the absorption mechanisms of FNC in the small intestine, as well as the interactions between FNC and P-glycoprotein (P-gp), multidrug resistance-associated protein 2 (MRP2) and breast cancer resistance protein (BCRP). The experiments were performed using Caco-2 cells and the rat small intestine...
May 6, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28486519/changes-in-body-mass-index-and-hemoglobin-concentration-in-breastfeeding-women-living-with-hiv-with-a-cd4-count-over-350-results-from-4-african-countries-the-anrs-12174-trial
#19
Eric Nagaonlé Somé, Ingunn M S Engebretsen, Nicolas Nagot, Nicolas Y Meda, Roselyne Vallo, Chipepo Kankasa, James K Tumwine, Mandisa Singata, Justus G Hofmeyr, Philippe Van de Perre, Thorkild Tylleskär
INTRODUCTION: Breastfeeding is recommended for infants born to HIV-infected women in low-income settings. Both breastfeeding and HIV-infection are energy demanding. Our objective was to explore how exclusive and predominant breastfeeding changes body mass index (BMI) among breastfeeding HIV1-positive women participating in the ANRS12174 trial (clinical trial no NCT0064026). METHODS: HIV-positive women (n = 1 267) with CD4 count >350, intending to breastfeed HIV-negative infants were enrolled from Burkina Faso, South Africa, Uganda and Zambia and counselled on breastfeeding...
2017: PloS One
https://www.readbyqxmd.com/read/28482927/the-developmental-effects-of-hiv-and-alcohol-a-comparison-of-gestational-outcomes-among-babies-from-south-african-communities-with-high-prevalence-of-hiv-and-alcohol-use
#20
Kirsten A M Donald, Anne Fernandez, Kasey Claborn, Caroline Kuo, Nastassja Koen, Heather Zar, Dan J Stein
BACKGROUND: There is growing evidence of the negative impact of alcohol on morbidity and mortality of individuals living with HIV but limited evidence of in utero effects of HIV and alcohol on exposure on infants. METHODS: We conducted a population-based birth cohort study (N = 667 mother-infant dyads) in South Africa to investigate whether maternal alcohol use and HIV affected gestational outcomes. Descriptive data analysis was conducted for all variables using frequency distributions, measures of central tendency, and estimates of variance...
May 8, 2017: AIDS Research and Therapy
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