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https://www.readbyqxmd.com/read/28929260/preferences-for-injectable-prep-among-young-u-s-cisgender-men-and-transgender-women-and-men-who-have-sex-with-men
#1
Katie B Biello, Sybil Hosek, Morgan T Drucker, Marvin Belzer, Matthew J Mimiaga, Elliot Marrow, Julia Coffey-Esquivel, Jennifer Brothers, Kenneth H Mayer
Young men who have sex with men account for approximately 20% of incident HIV infections in the U.S. Antiretroviral pre-exposure prophylaxis (PrEP) administered as a daily pill has been shown to decrease HIV acquisition in at-risk individuals. New modalities for PrEP are being developed and tested, including injectable PrEP; however, acceptability of these emerging modalities has not yet been examined in youth. We conducted six focus groups with 36 young men and transgender men and women who have sex with men in Boston, Chicago, and Los Angeles in 2016 to assess interest in and preference for different PrEP modalities...
September 19, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28929138/cryoem-structure-of-mxb-reveals-a-novel-oligomerization-interface-critical-for-hiv-restriction
#2
Frances J D Alvarez, Shaoda He, Juan R Perilla, Sooin Jang, Klaus Schulten, Alan N Engelman, Sjors H W Scheres, Peijun Zhang
Human dynamin-like, interferon-induced myxovirus resistance 2 (Mx2 or MxB) is a potent HIV-1 inhibitor. Antiviral activity requires both the amino-terminal region of MxB and protein oligomerization, each of which has eluded structural determination due to difficulties in protein preparation. We report that maltose binding protein-fused, full-length wild-type MxB purifies as oligomers and further self-assembles into helical arrays in physiological salt. Guanosine triphosphate (GTP), but not guanosine diphosphate, binding results in array disassembly, whereas subsequent GTP hydrolysis allows its reformation...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28927341/perceived-need-of-and-interest-in-hiv-pre-exposure-prophylaxis-amongst-men-who-have-sex-with-men-attending-three-sexual-health-clinics-in-london-uk
#3
Lauren Bull, Pavle Dimitrijevic, Sophie Beverley, Alex Scarborough, Sundhiya Mandalia, Olamide Dosekun, Tristan Barber, Iain Reeves, Sheena McCormack, Michael Rayment
HIV pre-exposure prophylaxis (PrEP) has proven efficacy in reducing the risk of HIV infection in men who have sex with men (MSM), but has not yet been commissioned in the UK. The aim of this study was to investigate perceived need and benefit (or experience of) PrEP among HIV-negative MSM attending sexual health clinics. HIV-negative MSM attending three sexual health centres in London, UK were opportunistically invited to complete a questionnaire. Data collected comprised demographic data and sexual and drug use behaviours as well as questions regarding perceptions of risk and need for PrEP...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28919303/acquisition-of-wild-type-hiv-1-infection-in-a-patient-on-pre-exposure-prophylaxis-with-high-intracellular-concentrations-of-tenofovir-diphosphate-a-case-report
#4
Elske Hoornenborg, Maria Prins, Roel C A Achterbergh, Lycke R Woittiez, Marion Cornelissen, Suzanne Jurriaans, Neeltje A Kootstra, Peter L Anderson, Peter Reiss, Henry J C de Vries, Jan M Prins, Godelieve J de Bree
BACKGROUND: Pre-exposure prophylaxis (PrEP) with emtricitabine and tenofovir disoproxil fumarate is highly effective against acquisition of HIV infection, and only two cases of infection with a multidrug-resistant virus have been reported under adequate long-term adherence, as evidenced by tenofovir diphosphate concentrations in dried blood spots. We report a case of wild-type HIV-1 infection despite consistent use of emtricitabine and tenofovir disoproxil fumarate. METHODS: The patient participated in the Amsterdam PrEP project, a demonstration project of daily and event-driven PrEP...
September 14, 2017: Lancet HIV
https://www.readbyqxmd.com/read/28916320/exosomes-carring-gag-env-of-alv-j-possess-negative-effect-on-immunocytes
#5
Guihua Wang, Zhenzhen Wang, Pingping Zhuang, Xiaomin Zhao, Ziqiang Cheng
J subgroup avian leukosis virus (ALV-J) is an exogenous retrovirus of avian. A key feature of ALV-J infection is leading to severe immunosuppressive characteristic of diseases. Viral components of retrovirus were reported closely associated with immunosuppression, and several similarities between exosomes and retrovirus preparations have lead to the hypotheses of retrovirus hijacker exosomes pathway. In this study, we purified exosomes from DF-1 cells infected and uninfected by ALV-J. Electron microscopy and mass spectrometry (MS) analysis showed that ALV-J not only increased the production of exosomes from ALV-J infected DF-1 cells (Exo-J) but also stimulated some proteins expression, especially ALV-J components secreted in exosomes...
September 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28913659/will-gay-and-bisexual-men-taking-oral-pre-exposure-prophylaxis-prep-switch-to-long-acting-injectable-prep-should-it-become-available
#6
Steven A John, Thomas H F Whitfield, H Jonathon Rendina, Jeffrey T Parsons, Christian Grov
Oral pre-exposure prophylaxis (PrEP) is highly effective at reducing HIV transmission risk and is CDC recommended for many gay, bisexual, and other men who have sex with men (GBM). We sought to investigate awareness of and preference for using long-acting injectable PrEP (LAI-PrEP) among GBM currently taking oral PrEP (n = 104), and identify their concerns. About half of GBM had heard of LAI-PrEP, and 30.8% specifically preferred LAI-PrEP. GBM with more concerns about the level of protection and drug half-life of LAI-PrEP had lower odds of preferring LAI-PrEP...
September 14, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28911033/formulation-of-chitosan-with-the-polyepitope-hiv-1-protein-candidate-vaccine-efficiently-boosts-cellular-immune-responses-in-mice
#7
Ehsan Ollah Jazaeri, Atiyeh Mahdavi, Asghar Abdoli
Human immunodeficiency virus-1 (HIV-1) continues to be a major global public health issue and priority. Despite the variety of antiretroviral therapies, it seems that an effective vaccine against HIV-1 is still very necessary. An ideal HIV-1 vaccine should be able to elicit both humoral and cellular immunities. In this respect, polyepitope vaccines, incorporated from several conserved regions of HIV-1 proteins, have received much attention recently. Herein, the immunogenicity of the HIV-1 polyepitope protein-based candidate vaccines was evaluated in BALB/c mice...
November 30, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28905173/pharmacokinetic-and-tissue-distribution-profile-of-long-acting-tenofovir-alafenamide-and-elvitegravir-loaded-nanoparticles-in-humanized-mice-model
#8
Pavan Kumar Prathipati, Subhra Mandal, Gregory Pon, Renuga Vivekanandan, Christopher J Destache
PURPOSE: Non-adherence to the antiretroviral (ARV) regimen is a critical factor in determining efficacy of ARV drugs for pre-exposure prophylaxis (PrEP). A long-acting parenteral formulation may be an effective alternative to daily oral dosing. A pharmacokinetic and tissue distribution study of drug-loaded nanoparticle (NP) was performed in female humanized CD34(+)-NSG mice. METHODS: Mice received 200 mg/kg each of tenofovir alafenamide (TAF) and elvitegravir (EVG) as free drugs (TAF + EVG solution) or as drug loaded NP (TAF + EVG NP) formulation by subcutaneous (SubQ) administration...
September 13, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28903628/what-motivates-serodiscordant-couples-to-prevent-hiv-transmission-within-their-relationships-findings-from-a-prep-implementation-study-in-kenya
#9
Rena C Patel, Anna M Leddy, Josephine Odoyo, Keerthana Anand, Gaelen Stanford-Moore, Imeldah Wakhungu, Elizabeth A Bukusi, Jared M Baeten, Joelle M Brown
With the planned scale-up of pre-exposure prophylaxis (PrEP) for HIV prevention among serodiscordant couples in resource-limited settings, gaining an understanding of what motivates serodiscordant couples to prevent HIV is critical. We conducted 44 semi-structured, in-depth individual or couple interviews with 63 participants (33 HIV-infected and 30 HIV-uninfected participants) enrolled in a prospective implementation study of oral antiretroviral-based prevention in Kisumu, Kenya. Transcripts were iteratively analysed using inductive content analysis...
September 14, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28902857/willingness-to-use-pre-exposure-prophylaxis-for-hiv-prevention-among-men-who-have-sex-with-men-in-malaysia-findings-from-an-online-survey
#10
Sin How Lim, Gitau Mburu, Adam Bourne, Joselyn Pang, Jeffrey A Wickersham, Clayton Koh Thuan Wei, Ilias Adam Yee, Bangyuan Wang, Matteo Cassolato, Iskandar Azwa
OBJECTIVE: We examined willingness to use pre-exposure prophylaxis (PrEP) for HIV prevention among men who have sex with men (MSM) in Malaysia. METHODS: An online survey of 990 MSM was conducted between March and April 2016. Eligibility criteria included being biological male, Malaysian citizen, 18 years of age or above, identifying as MSM, and being HIV negative or unknown status. Participants' demographics, sexual and drug use behaviors, attitudes towards PrEP, and preferences regarding future access to PrEP were collected...
2017: PloS One
https://www.readbyqxmd.com/read/28902704/hiv-pre-exposure-prophylaxis-implementation-at-local-health-departments-a-statewide-assessment-of-activities-and-barriers
#11
Helen L Zhang, Sarah K Rhea, Christopher B Hurt, Victoria L Mobley, Heidi Swygard, Arlene C Seña, Mehri S McKellar
BACKGROUND: Expanding access to HIV pre-exposure prophylaxis (PrEP) could help reduce rates of HIV infection in the United States. This study characterizes activities and barriers to PrEP implementation at local health departments (LHDs) in North Carolina (NC), which contains a large rural population. METHODS: In May 2016, a web-based survey was distributed to health directors of all county and district health departments in NC to assess PrEP-related activities, perceived barriers to PrEP implementation, and desired PrEP-related resources...
September 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28902677/disparities-in-awareness-of-hiv-postexposure-and-preexposure-prophylaxis-among-notified-partners-of-hiv-positive-individuals-new-york-city-2015-2017
#12
Kavita Misra, Chi-Chi Udeagu
BACKGROUND: Named sex- or needle-sharing partners of HIV-positive individuals are a priority prevention population due to their known HIV exposure. Understanding postexposure and preexposure prophylaxis (PEP and PrEP) awareness and use among them is important for successful interventions. METHODS: Data from notified partners of HIV-positive individuals (New York City, May 2015-April 2017) were analyzed to describe PEP/PrEP awareness, provider discussion, and use by sociodemographic and risk characteristics...
October 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28902074/plasma-tenofovir-levels-to-support-adherence-to-tdf-ftc-pre-exposure-prophylaxis-for-hiv-prevention-in-msm-in-los-angeles-california
#13
Raphael J Landovitz, Matthew Beymer, Ryan Kofron, K Rivet Amico, Christina Psaros, Lane Bushman, Peter L Anderson, Risa Flynn, David P Lee, Robert K Bolan, Wilbert C Jordan, Chi-Hong Tseng, Rhodri Dierst-Davies, Jim Rooney, Amy Rock Wohl
BACKGROUND: TDF/FTC PrEP is effective against rectal HIV acquisition when taken as prescribed. Strategies that identify and intervene with those challenged by adherence to daily medication are needed. SETTING: PATH-PrEP was an open-label single arm interventional cohort study conducted at 2 community-based clinical sites in Los Angeles, California. METHODS: We enrolled self-identified MSM and TGW ≥18 years of age at elevated risk of HIV acquisition...
September 7, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28902071/the-importance-of-risk-perception-predictors-of-prep-acceptance-among-thai-msm-and-tg-women-at-a-community-based-health-service
#14
Rosalyn Plotzker, Pich Seekaew, Jureeporn Jantarapakde, Supabhorn Pengnonyang, Deondara Trachunthong, Danai Lingjongrat, Surang Janyam, Thitiyanun Nakpor, Sutinee Charoenying, Stephen Mills, Ravipa Vannakit, Michael Cassell, Praphan Phanuphak, Cheewanan Lertpiriyasuwat, Nittaya Phanuphak
BACKGROUND: HIV prevalence among Thai men who have sex with men (MSM) and transgender women (TG) are 9.15% and 11.8% respectively, compared to 1.1% in the general population. To better understand early adopters of Pre-Exposure Prophylaxis (PrEP) in Thailand, we analyzed bio-behavioral and socio-demographic characteristics of PrEP-eligible MSM and TG. SETTING: Four Thai urban community clinics between October 2015 and February 2016 METHODS:: Socio-demographics, HIV risk characteristics, and PrEP knowledge and attitudes, were analyzed in association with PrEP initiation among eligible Thai MSM and TG...
September 7, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28901005/delivery-arrangements-for-health-systems-in-low-income-countries-an-overview-of-systematic-reviews
#15
REVIEW
Agustín Ciapponi, Simon Lewin, Cristian A Herrera, Newton Opiyo, Tomas Pantoja, Elizabeth Paulsen, Gabriel Rada, Charles S Wiysonge, Gabriel Bastías, Lilian Dudley, Signe Flottorp, Marie-Pierre Gagnon, Sebastian Garcia Marti, Claire Glenton, Charles I Okwundu, Blanca Peñaloza, Fatima Suleman, Andrew D Oxman
BACKGROUND: Delivery arrangements include changes in who receives care and when, who provides care, the working conditions of those who provide care, coordination of care amongst different providers, where care is provided, the use of information and communication technology to deliver care, and quality and safety systems. How services are delivered can have impacts on the effectiveness, efficiency and equity of health systems. This broad overview of the findings of systematic reviews can help policymakers and other stakeholders identify strategies for addressing problems and improve the delivery of services...
September 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28899162/high-levels-of-viral-suppression-among-east-african-hiv-infected-women-and-men-in-serodiscordant-partnerships-initiating-antiretroviral-therapy-with-high-cd4-counts-and-during-pregnancy
#16
Andrew Mujugira, Jared Baeten, Lara Kidoguchi, Jessica Haberer, Connie Celum, Deborah Donnell, Kenneth Ngure, Elizabeth Bukusi, Nelly Mugo, Stephen Asiimwe, Josephine Odoyo, Edna Tindimwebwa, Nulu Bulya, Elly Katabira, Renee Heffron
BACKGROUND: People who are asymptomatic and feel healthy, including pregnant women, may be less motivated to initiate ART or achieve high adherence. We assessed whether ART initiation, and viral suppression 6, 12 and 24-months after ART initiation, were lower in HIV-infected members of serodiscordant couples who initiated during pregnancy or with higher CD4 counts. METHODS: We used data from the Partners Demonstration Project, an open-label study of the delivery of integrated PrEP and ART (at any CD4 count) for HIV prevention among high-risk HIV serodiscordant couples in Kenya and Uganda...
September 13, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28895659/implementation-strategies-for-health-systems-in-low-income-countries-an-overview-of-systematic-reviews
#17
REVIEW
Tomas Pantoja, Newton Opiyo, Simon Lewin, Elizabeth Paulsen, Agustín Ciapponi, Charles S Wiysonge, Cristian A Herrera, Gabriel Rada, Blanca Peñaloza, Lilian Dudley, Marie-Pierre Gagnon, Sebastian Garcia Marti, Andrew D Oxman
BACKGROUND: A key function of health systems is implementing interventions to improve health, but coverage of essential health interventions remains low in low-income countries. Implementing interventions can be challenging, particularly if it entails complex changes in clinical routines; in collaborative patterns among different healthcare providers and disciplines; in the behaviour of providers, patients or other stakeholders; or in the organisation of care. Decision-makers may use a range of strategies to implement health interventions, and these choices should be based on evidence of the strategies' effectiveness...
September 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28894986/fertility-intentions-pregnancy-and-use-of-prep-and-art-for-safer-conception-among-east-african-hiv-serodiscordant-couples
#18
Renee Heffron, Kerry Thomson, Connie Celum, Jessica Haberer, Kenneth Ngure, Nelly Mugo, Elizabeth Bukusi, Elly Katabira, Josephine Odoyo, Nulu Bulya, Stephen Asiimwe, Edna Tindimwebwa, Jared M Baeten
African HIV serodiscordant couples often desire pregnancy, despite sexual HIV transmission risk during pregnancy attempts. Pre-exposure prophylaxis (PrEP) and antiretroviral therapy (ART) reduce HIV risk and can be leveraged for safer conception but how well these strategies are used for safer conception is not known. We conducted an open-label demonstration project of the integrated delivery of PrEP and ART among 1013 HIV serodiscordant couples from Kenya and Uganda followed quarterly for 2 years. We evaluated fertility intentions, pregnancy incidence, the use of PrEP and ART during peri-conception, and peri-conception HIV incidence...
September 11, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28891715/-where-it-falls-apart-barriers-to-retention-in-hiv-care-in-latino-immigrants-and-migrants
#19
Julie H Levison, Laura M Bogart, Iman F Khan, Dianna Mejia, Hortensia Amaro, Margarita Alegría, Steven Safren
Latino immigrants in the United States are disproportionately affected by HIV. Barriers to consistent attendance (retention) in HIV primary care constrain opportunities for HIV treatment success, but have not been specifically assessed in this population. We conducted semistructured interviews with 37 HIV-infected Latinos (aged ≥18 years and born in Puerto Rico or a Latin American Spanish-speaking country) and 14 HIV providers in metropolitan Boston (total n = 51). The Andersen Model of Healthcare Utilization informed a semistructured interview guide, which bilingual research staff used to explore barriers to HIV care...
September 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28887234/vaginal-semisolid-products-technological-performance-considering-physiologic-parameters
#20
Rita Monteiro Machado, Ana Palmeira-de-Oliveira, José Martinez-de-Oliveira, Rita Palmeira-de-Oliveira
Vaginal semisolid products are frequently used to treat vaginal infections and atrophy-related symptoms of menopause. Formulations composition and the methods for their characterization, especially those developed concerning the target epithelia, are key tools to predict in vivo results at early stages of product development. However, recent studies on this subject have been almost exclusively focused on anti-HIV preparations. The aim of this work consists on improving traditional characterization methods by using physiological parameters in order to construct predictive tools to characterize a new ideal vaginal semisolid formulation whatever target it may have...
September 5, 2017: European Journal of Pharmaceutical Sciences
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