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https://www.readbyqxmd.com/read/28530684/tackling-hiv-and-aids-contributions-by-non-human-primate-models
#1
Koen K A Van Rompay
During the past three decades, non-human primate (NHP) models have gained an increasing importance in HIV basic and translational research. In contrast to natural host models, infection of macaques with virulent simian or simian-human immunodeficiency viruses (SIV, SHIV) results in a disease that closely resembles HIV infection and AIDS. Although there is no perfect animal model, and each of the available models has its benefits and limitations, carefully designed NHP studies with selection of experimental variables have unraveled important questions of basic pathogenesis and have provided the tools to explore and screen intervention strategies...
May 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28530043/the-happy-teen-programme-a-holistic-outpatient-clinic-based-approach-to-prepare-hiv-infected-youth-for-the-transition-from-paediatric-to-adult-medical-care-services-in-thailand
#2
Rangsima Lolekha, Vitharon Boon-Yasidhi, Yossawadee Na-Nakorn, Boonying Manaboriboon, Warunee Punpanich Vandepitte, Michael Martin, Jariya Tarugsa, Wipada Nuchanard, Pimsiri Leowsrisook, Ketwadee Lapphra, Piyarat Suntarattiwong, Vorapathu Thaineua, Kulkanya Chokephaibulkit
INTRODUCTION: We developed an 18-month Happy Teen 2 (HT2) programme comprised of a one-day workshop, two half-day sessions, and three individual sessions to prepare HIV-infected youth for the transition from paediatric to adult HIV care services. We describe the programme and evaluate the change in youth's knowledge scores. METHODS: We implemented the HT2 programme among HIV-infected Thai youth aged 14-22 years who were aware of their HIV status and receiving care at two hospitals in Bangkok (Siriraj Hospital, Queen Sirikit National Institute of Child Health [QSNICH])...
May 16, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28524747/health-care-students-at-an-argentinean-school-of-medicine-are-they-well-prepared-to-provide-quality-sexual-and-reproductive-health-services
#3
Belén Provenzano-Castro, Silvia Oizerovich, Babill Stray-Pedersen
OBJECTIVES: The aim of our study was to assess what students of the University of Buenos Aires School of Medicine learn about sexual and reproductive health (SRH) and rights, focusing particularly on their knowledge of accessibility to contraception and abortion legislation. METHODS: In this cross-sectional study, self-administered, anonymous questionnaires were administered to 760 first year students and to 695 final year students from different fields of study (medicine, midwifery, nursing, radiology, nutrition, speech therapy and physiotherapy) between 2011 and 2013...
May 19, 2017: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/28521860/-hiv-pre-exposure-prophylaxis-prep-the-three-should-not-prevent-seing-the-forest
#4
Jordi Casabona
No abstract text is available yet for this article.
May 15, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/28515195/cohort-profile-internal-migration-in-sub-saharan-africa-the-migration-and-health-in-malawi-mhm-study
#5
Philip Anglewicz, Mark VanLandingham, Lucinda Manda-Taylor, Hans-Peter Kohler
PURPOSE: The Migration and Health in Malawi (MHM) study focuses on a key challenge in migration research: although it has long been established that migration and health are closely linked, identifying the effect of migration on various health outcomes is complicated by methodological challenges. The MHM study uses a longitudinal panel premigration and postmigration study design (with a non-migrant comparison group) to measure and/or control for important characteristics that affect both migration and health outcomes...
May 17, 2017: BMJ Open
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
#6
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/28508264/biological-safety-of-a-highly-purified-10-liquid-intravenous-immunoglobulin-preparation-from-human-plasma
#7
Caroline Goussen, Steve Simoneau, Soline Bérend, Christine Jehan-Kimmel, Anne Bellon, Céline Ducloux, Bruno You, Philippe Paolantonacci, Monique Ollivier, Ludovic Burlot, Sami Chtourou, Benoît Flan
BACKGROUND: A highly purified 10% liquid intravenous immunoglobulin, IQYMUNE(®), has been developed using an innovative manufacturing process including an affinity chromatography step for the removal of anti-A and anti-B hemagglutinins. OBJECTIVES: The pathogen (viruses and prions) clearance efficacy of the manufacturing process and its robustness for critical steps were investigated. METHODS: The manufacturing process of IQYMUNE(®) includes two dedicated complementary virus reduction steps: solvent/detergent (S/D) treatment and 20 nm nanofiltration as well as two contributing steps, namely caprylic acid fractionation and anion-exchange chromatography...
May 15, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/28505240/incidence-of-gonorrhea-and-chlamydia-following-hiv-preexposure-prophylaxis-among-men-who-have-sex-with-men-a-modeling-study
#8
Samuel M Jenness, Kevin M Weiss, Steven M Goodreau, Thomas Gift, Harrell Chesson, Karen W Hoover, Dawn K Smith, Albert Y Liu, Patrick S Sullivan, Eli S Rosenberg
Background: Preexposure prophylaxis (PrEP) is highly effective for preventing HIV, but risk compensation (RC) in men who have sex with men (MSM) raises concerns about increased sexually transmitted infections (STIs). CDC's PrEP guidelines recommend biannual STI screening, which may reduce incidence by treating STIs that would otherwise remain undiagnosed. We investigated the impact of these two potentially counteracting phenomena. Methods: With a stochastic network-based mathematical model of HIV and rectal/urogenital Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) transmission dynamics among MSM in the United States, we simulated PrEP uptake following the prescription indications and HIV/STI screening recommendations in the CDC guidelines...
May 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28502791/single-strand-consensus-sequencing-reveals-that-hiv-type-but-not-subtype-significantly-impacts-viral-mutation-frequencies-and-spectra
#9
Jonathan M O Rawson, Daryl M Gohl, Sean R Landman, Megan E Roth, Morgan E Meissner, Tara S Peterson, James S Hodges, Kenneth B Beckman, Louis M Mansky
A long-standing question of human immunodeficiency virus (HIV) genetic variation and evolution has been whether differences exist in mutation rate and/or mutation spectra among HIV types (i.e., HIV-1 versus HIV-2) as well as among HIV groups (i.e., HIV-1 groups M-P and HIV-2 groups A-H) and HIV-1 Group M subtypes (i.e., subtypes A-D, F-H, and J-K). To address this, a new single-strand consensus sequencing assay was developed for the determination of HIV mutation frequencies and spectra using the Illumina sequencing platform...
May 11, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28501964/consensus-statement-supporting-safer-conception-and-pregnancy-for-men-and-women-living-with-and-affected-by-hiv
#10
Lynn T Matthews, Jolly Beyeza-Kashesya, Ian Cooke, Natasha Davies, Renee Heffron, Angela Kaida, John Kinuthia, Okeoma Mmeje, Augusto E Semprini, Shannon Weber
Safer conception interventions reduce HIV incidence while supporting the reproductive goals of people living with or affected by HIV. We developed a consensus statement to address demand, summarize science, identify information gaps, outline research and policy priorities, and advocate for safer conception services. This statement emerged from a process incorporating consultation from meetings, literature, and key stakeholders. Three co-authors developed an outline which was discussed and modified with co-authors, working group members, and additional clinical, policy, and community experts in safer conception, HIV, and fertility...
May 13, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28498144/the-impact-of-preexposure-prophylaxis-among-men-who-have-sex-with-men-an-individual-based-model
#11
Parastu Kasaie, Jeff Pennington, Maunank S Shah, Stephen A Berry, Danielle German, Colin P Flynn, Chris Beyrer, David W Dowdy
OBJECTIVES: Preexposure prophylaxis (PrEP) is recommended for preventing HIV infection among individuals at high risk, including men who have sex with men (MSM). Although its individual-level efficacy is proven, questions remain regarding population-level impact of PrEP implementation. DESIGN: We developed an agent-based simulation of HIV transmission among MSM, accounting for demographics, sexual contact network, HIV disease stage, and use of antiretroviral therapy...
June 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28493004/efavirenz-dissolution-enhancement-iv-antisolvent-nanocrystallization-by-sonication-physical-stability-and-dissolution
#12
Gabriela Julianelly Sartori, Livia Deris Prado, Helvécio Vinícius Antunes Rocha
Efavirenz is a fundamental drug in the HIV therapy; however, it has a low bioavailability due to low water solubility. Particle nanonization should enhance its dissolution and therefore its bioavailability. Nanocrystallization is a promising technique for preparing drug nanocrystals. A solution containing efavirenz (EFV) and methanol was added to an aqueous solution of particle stabilizers, under sonication. The adequate polymer stabilizer and its concentration and drug load were evaluated. Particle size and zeta potential of suspensions were measured...
May 10, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28490736/extracellular-vesicles-carry-hiv-env-and-facilitate-hiv-infection-of-human-lymphoid-tissue
#13
Anush Arakelyan, Wendy Fitzgerald, Sonia Zicari, Christophe Vanpouille, Leonid Margolis
Cells productively infected with HIV-1 release virions along with extracellular vesicles (EVs) whose biogenesis, size, and physical properties resemble those of retroviruses. Here, we found that a significant number of EVs (exosomes) released by HIV-1 infected cells carry gp120 (Env), a viral protein that mediates virus attachment and fusion to target cells, and also facilitates HIV infection in various indirect ways. Depletion of viral preparations of EVs, in particular of those that carry gp120, decreases viral infection of human lymphoid tissue ex vivo...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28481784/distribution-of-behavioral-patterns-prior-to-infection-among-san-francisco-men-who-have-sex-with-men-newly-infected-with-hiv-in-2014
#14
Yea-Hung Chen, Willi McFarland, H Fisher Raymond, Hyman M Scott, Eric Vittinghoff, Travis C Porco
BACKGROUND: Despite continued reductions in the number of HIV cases reported among San Francisco men who have sex with men (MSM) and the HIV-prevention potential offered by pharmaceutical tools such as pre-exposure prophylaxis (PrEP), there are uncertainties, particularly given reported decreases in consistent condom use. A key uncertainty is what groups of MSM should be targeted. The present study estimates the distribution of behavioral patterns prior to infection among San Francisco MSM newly infected with HIV in 2014...
May 5, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28480682/adherence-and-characteristics-of-hiv-post-exposure-prophylaxis-for-a-population-in-tel-aviv-of-men-who-have-sex-with-men
#15
Noam Oz, Danny Alon, Gideon Y Stein, Dan Turner
BACKGROUND: Pre-exposure prophylaxis (PrEP) for populations at high risk for human immunodeficiency virus (HIV) is still not available in Israel. OBJECTIVES: To analyze post-exposure prophylaxis (PEP) treatment adherence rates among adult men in Tel Aviv, Israel, who have sex with men (MSM), and to obtain data on the demographics of PEP users, exposure types, timeline of exposure and PEP administration, incidence of side effects, number of treatments per individual, and satisfaction with selected elements of treatment provision...
April 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28480276/prescribing-of-human-immunodeficiency-virus-hiv-pre-exposure-prophylaxis-by-hiv-medical-providers-in-the-united-states-2013-2014
#16
John Weiser, Shikha Garg, Linda Beer, Jacek Skarbinski
BACKGROUND: Clinical trials have demonstrated the effectiveness of human immunodeficiency virus (HIV) pre-exposure prophylaxis (PrEP) for reducing HIV acquisition. Understanding how HIV care providers are prescribing PrEP is necessary to ensure success of this prevention strategy. METHODS: During 2013-2014, we surveyed US HIV care providers who also provided care to HIV-negative patients. We estimated percentages who had prescribed PrEP and assessed associations between provider characteristics and PrEP prescribing...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28480121/alchemy-a-web-2-0-real-time-quality-assurance-platform-for-human-immunodeficiency-virus-hepatitis-c-virus-and-bk-virus-quantitation-assays
#17
Emmanuel Agosto-Arroyo, Gina M Coshatt, Thomas S Winokur, Shuko Harada, Seung L Park
BACKGROUND: The molecular diagnostics laboratory faces the challenge of improving test turnaround time (TAT). Low and consistent TATs are of great clinical and regulatory importance, especially for molecular virology tests. Laboratory information systems (LISs) contain all the data elements necessary to do accurate quality assurance (QA) reporting of TAT and other measures, but these reports are in most cases still performed manually: a time-consuming and error-prone task. The aim of this study was to develop a web-based real-time QA platform that would automate QA reporting in the molecular diagnostics laboratory at our institution, and minimize the time expended in preparing these reports...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28478870/intent-to-use-preexposure-prophylaxis-prep-hiv-risk-behaviors-and-self-report-neurocognitive-symptoms-by-high-risk-drug-users-a-mediation-analysis
#18
Roman Shrestha, Pramila Karki, Tania B Huedo-Medina, Michael Copenhaver
Neurocognitive impairment (NCI) and HIV risk are significant correlates of intent to use preexposure prophylaxis (PrEP). The extent to which similar outcomes could occur when these factors operate together, particularly for people who use drugs (PWUD), remains an important unanswered question. We therefore sought evidence that HIV risk behavior mediated the relationship between NCI and intent to use PrEP in high-risk PWUD in treatment. HIV-uninfected, methadone-maintained people who reported HIV-risk behaviors were enrolled (n = 400)...
April 19, 2017: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/28474225/trans-dissemination-of-exosomes-from-hiv-1-infected-cells-fosters-both-hiv-1-trans-infection-in-resting-cd4-t-lymphocytes-and-reactivation-of-the-hiv-1-reservoir
#19
Chiara Chiozzini, Claudia Arenaccio, Eleonora Olivetta, Simona Anticoli, Francesco Manfredi, Flavia Ferrantelli, Gabriella d'Ettorre, Ivan Schietroma, Mauro Andreotti, Maurizio Federico
Intact HIV-1 and exosomes can be internalized by dendritic cells (DCs) through a common pathway leading to their transmission to CD4(+) T lymphocytes by means of mechanisms defined as trans-infection and trans-dissemination, respectively. We previously reported that exosomes from HIV-1-infected cells activate both uninfected quiescent CD4(+) T lymphocytes, which become permissive to HIV-1, and latently infected cells, with release of HIV-1 particles. However, nothing is known about the effects of trans-dissemination of exosomes produced by HIV-1-infected cells on uninfected or latently HIV-1-infected CD4(+) T lymphocytes...
May 4, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28472928/using-the-multiphase-optimization-strategy-most-to-optimize-an-hiv-care-continuum-intervention-for-vulnerable-populations-a-study-protocol
#20
Marya Viorst Gwadz, Linda M Collins, Charles M Cleland, Noelle R Leonard, Leo Wilton, Monica Gandhi, R Scott Braithwaite, David C Perlman, Alexandra Kutnick, Amanda S Ritchie
BACKGROUND: More than half of persons living with HIV (PLWH) in the United States are insufficiently engaged in HIV primary care and not taking antiretroviral therapy (ART), mainly African Americans/Blacks and Hispanics. In the proposed project, a potent and innovative research methodology, the multiphase optimization strategy (MOST), will be employed to develop a highly efficacious, efficient, scalable, and cost-effective intervention to increase engagement along the HIV care continuum...
May 4, 2017: BMC Public Health
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