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Pre-exposure prophylaxis

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https://www.readbyqxmd.com/read/28444867/urine-assay-for-tenofovir-to-monitor-adherence-in-real-time-to-tenofovir-disoproxil-fumarate-emtricitabine-as-pre-exposure-prophylaxis
#1
H C Koenig, K Mounzer, G W Daughtridge, C E Sloan, L Lalley-Chareczko, G S Moorthy, S C Conyngham, A F Zuppa, L J Montaner, P Tebas
OBJECTIVES: Tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) is approved for pre-exposure prophylaxis (PrEP) against HIV infection. Adherence is critical for the success of PrEP, but current adherence measurements are inadequate for real-time adherence monitoring. We developed and validated a urine assay to measure tenofovir (TFV) to objectively monitor adherence to PrEP. METHODS: We developed a urine assay using high-performance liquid chromatography coupled to tandem mass spectrometry with high sensitivity/specificity for TFV that allowed us to determine TFV concentrations in log10 categories between 0 and 10 000 ng/mL...
April 26, 2017: HIV Medicine
https://www.readbyqxmd.com/read/28444469/modelling-the-unaids-90-90-90-treatment-cascade-for-gay-bisexual-and-other-men-who-have-sex-with-men-in-south-africa-using-the-findings-of-a-data-triangulation-process-to-map-a-way-forward
#2
Andrew Scheibe, Michael Grasso, Henry Fisher Raymond, Albert Manyuchi, Thomas Osmand, Tim Lane, Helen Struthers
A data triangulation exercise was carried out between 2013 and 2015 to assess the HIV epidemic and response among gay, bisexual and other men who have sex with men (GBMSM) in South Africa. We used the findings to assess progress in achieving the UNAIDS 90-90-90 goals for GBMSM in the country. Three scenarios were developed using different GBMSM population factors (2.0, 3.5 and 5.0% of males aged ≥15) to estimate the population size, HIV prevalence of 13.2-49.5%, and 68% of GBMSM knowing their status. Due to data gaps, general population data were used as estimates of GBMSM on antiretroviral therapy (ART) and virologically suppressed (25...
April 25, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28442797/pre-and-post-sexual-exposure-prophylaxis-of-hiv-an-update
#3
REVIEW
Yogesh S Marfatia, Sheethal K Jose, Reema R Baxi, Ruchi J Shah
Pitfalls in current HIV prevention strategies include late HIV testing, vulnerability among youth and females; lack of emphasis on treatment, low acceptance of circumcision, and nonavailability of protective vaccines. Continuing high-risk sexual behavior, forceful sex, coercive and nonconsensual sex, rape, and unprotected sexual activities make women the most vulnerable to acquisition of sexually transmitted infection/HIV and necessitates a more radical approach of prevention in high-risk individuals who do not have HIV...
January 2017: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28438932/evaluation-of-a-multi-drug-assay-for-monitoring-adherence-to-a-regimen-for-hiv-pre-exposure-prophylaxis-in-a-clinical-study-hiv-prevention-trials-network-073
#4
Yinfeng Zhang, William Clarke, Mark A Marzinke, Estelle Piwowar-Manning, Geetha Beauchamp, Autumn Breaud, Craig W Hendrix, Gavin A Cloherty, Lynda Emel, Scott Rose, Lisa Hightow-Weidman, Marc Siegel, Steven Shoptaw, Sheldon D Fields, Darrell Wheeler, Susan H Eshleman
Daily oral tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) is a safe and effective intervention for HIV pre-exposure prophylaxis (PrEP). We evaluated the performance of a qualitative assay that detects 20 antiretroviral (ARV) drugs for assessing recent PrEP exposure (multi-drug assay; detection limit: 2-20 ng/mL). Samples were obtained from 216 Black men who have sex with men in the United States who were enrolled in a study evaluating acceptability of tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) PrEP (208 HIV-uninfected men and eight seroconverters; 165 of the uninfected men and five of the seroconverters accepted PrEP)...
April 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28426834/acceptability-of-an-open-label-wait-listed-trial-design-experiences-from-the-proud-prep-study
#5
Mitzy Gafos, Elizabeth Brodnicki, Monica Desai, Sheena McCormack, Will Nutland, Sonali Wayal, Ellen White, Gemma Wood, Tristan Barber, Gill Bell, Amanda Clarke, David Dolling, David Dunn, Julie Fox, Lewis Haddow, Charles Lacey, Anthony Nardone, Killian Quinn, Caroline Rae, Iain Reeves, Michael Rayment, David White, Vanessa Apea, Wilbert Ayap, Claire Dewsnap, Yolanda Collaco-Moraes, Gabriel Schembri, Yinka Sowunmi, Rob Horne
BACKGROUND: PROUD participants were randomly assigned to receive pre-exposure prophylaxis (PrEP) immediately or after a deferred period of one-year. We report on the acceptability of this open-label wait-listed trial design. METHODS: Participants completed an acceptability questionnaire, which included categorical study acceptability data and free-text data on most and least liked aspects of the study. We also conducted in-depth interviews (IDI) with a purposely selected sub-sample of participants...
2017: PloS One
https://www.readbyqxmd.com/read/28423992/secrecy-empowerment-and-protection-positioning-prep-in-kwazulu-natal-south-africa
#6
Eliza Govender, Leila Mansoor, Kate MacQueen, Quarraisha Abdool Karim
The release of World Health Organisation guidelines recommending the prophylactic use of daily Truvada(®) for all populations at high risk of acquiring HIV opens the way for implementation of oral pre-exposure prophylaxis (PrEP). The impact of new prevention technologies is, however, dependent on demand creation strategies such as user awareness, acceptability and access, which in turn are influenced by sociocultural and gender norms. This study was conducted in three locations in KwaZulu-Natal, urban, rural and peri-urban, with six participatory workshops...
April 20, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28418987/the-roles-of-behavioral-and-social-science-research-in-the-fight-against-hiv-aids-a-functional-framework
#7
Paul Gaist, Michael J Stirratt
Landmark advances have been made in HIV/AIDS prevention and treatment. These include proof-of-concept and public health implementation of pre-exposure prophylaxis (PrEP) and "treatment as prevention" (TasP) to reduce HIV transmission as well as definitive evidence of the clinical gain from early antiretroviral treatment (ART) initiation. Significant progress has been made in understanding and addressing the social contexts and behavioral factors that impact HIV prevention, care, and treatment interventions...
April 7, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28418232/high-pre-exposure-prophylaxis-uptake-and-early-adherence-among-men-who-have-sex-with-men-and-transgender-women-at-risk-for-hiv-infection-the-prep-brasil-demonstration-project
#8
Brenda Hoagland, Ronaldo I Moreira, Raquel B De Boni, Esper G Kallas, José Valdez Madruga, Ricardo Vasconcelos, Silvia Goulart, Thiago S Torres, Luana M S Marins, Peter L Anderson, Paula M Luz, Iuri da Costa Leite, Albert Y Liu, Valdilea G Veloso, Beatriz Grinsztejn
INTRODUCTION: The efficacy of pre-exposure prophylaxis (PrEP) in preventing sexual acquisition of human immunodeficiency virus (HIV) is well established. Little is known about the feasibility of PrEP implementation in middle-income settings with concentrated epidemics among men who have sex with men (MSM) and transgender women (TGW). METHODS: PrEP Brasil is a prospective, multicentre, open-label demonstration project assessing PrEP delivery in the context of the Brazilian Public Health System...
April 6, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28416197/pre-exposure-prophylaxis-is-approved-in-scotland
#9
Rak Nandwani
No abstract text is available yet for this article.
April 13, 2017: Lancet HIV
https://www.readbyqxmd.com/read/28415911/risk-safety-and-sex-among-male-prep-users-time-for-a-new-understanding
#10
Kimberly Koester, Rivet K Amico, Hailey Gilmore, Albert Liu, Vanessa McMahan, Kenneth Mayer, Sybil Hosek, Robert Grant
Recent advances in biomedical HIV prevention have led to optimistic projections of a dramatic worldwide reduction of new infections by 2030. This optimism is counterbalanced by concerns that the protective benefits of one such technology, HIV pre-exposure prophylaxis (PrEP), may be negated by increases in other behaviours that offset these benefits (risk compensation). To contribute to a deeper understanding of concepts of safety and risk in the context of HIV PrEP, we draw on the narrative accounts of 61 male PrEP users who participated in the inaugural PrEP demonstration project: the iPrEx open-label extension study...
April 18, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28414261/-support-your-client-at-the-space-that-they-re-in-hiv-pre-exposure-prophylaxis-prep-prescribers-perspectives-on-prep-related-risk-compensation
#11
Sarah K Calabrese, Manya Magnus, Kenneth H Mayer, Douglas S Krakower, Adam I Eldahan, Lauren A Gaston Hawkins, Kristen Underhill, Nathan B Hansen, Trace S Kershaw, Joseph R Betancourt, John F Dovidio
Despite the demonstrated effectiveness of HIV pre-exposure prophylaxis (PrEP) and evidence that most PrEP users do not engage in risk compensation (i.e., increased risk behavior due to a perceived decrease in HIV susceptibility), some healthcare providers report patient risk compensation to be a deterrent to prescribing PrEP. Overcoming this barrier is essential to supporting PrEP access and uptake among people at risk for HIV. To inform such efforts, this qualitative study explored PrEP-related risk compensation attitudes among providers with firsthand experience prescribing PrEP...
April 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28409656/condomless-sex-and-hiv-transmission-among-serodifferent-couples-current-evidence-and-recommendations
#12
Alan Koff, Carole Goldberg, Onyema Ogbuagu
Human immunodeficiency virus (HIV) infection remains a global pandemic. The primary driver of HIV incidence is sexual transmission between serodifferent individuals. Condoms, when used consistently and correctly, are effective at preventing sexually-transmitted HIV infections, and are considered an integral component of a comprehensive approach to HIV prevention. However, the demonstrated effectiveness of antiretroviral therapy (ART) to prevent HIV transmission, known as treatment as prevention, and of pre-exposure prophylaxis, have raised an intriguing dilemma on the necessity and additive preventive benefit of condom use among individuals in serodifferent relationships utilizing these prevention strategies...
April 14, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28409266/intimate-partner-violence-and-prep-acceptability-among-low-income-young-black-women-exploring-the-mediating-role-of-reproductive-coercion
#13
Tiara Willie, Trace Kershaw, Jacquelyn C Campbell, Kamila A Alexander
A few studies suggest that women who experience intimate partner violence (IPV) are willing to use pre-exposure prophylaxis (PrEP), but no research has examined mediators of this relationship. The current study used path analysis to examine a phenomenon closely associated with IPV: reproductive coercion, or explicit male behaviors to promote pregnancy of a female partner without her knowledge or against her will. Birth control sabotage and pregnancy coercion-two subtypes of reproductive coercion behaviors-were examined as mediators of the relationship between IPV and PrEP acceptability among a cohort of 147 Black women 18-25 years of age recruited from community-based organizations in an urban city...
April 13, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28407730/men-who-have-sex-with-men-with-newly-diagnosed-hiv-are-often-eligible-for-hiv-pre-exposure-prophylaxis
#14
Sarah Cavilla, Daniel Richardson
No abstract text is available yet for this article.
May 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28407646/assessing-the-performance-of-3-human-immunodeficiency-virus-incidence-risk-scores-in-a-cohort-of-black-and-white-men-who-have-sex-with-men-in-the-south
#15
Jeb Jones, Martin Hoenigl, Aaron J Siegler, Patrick S Sullivan, Susan Little, Eli Rosenberg
BACKGROUND: Risk scores have been developed to identify men at high risk of human immunodeficiency virus (HIV) seroconversion. These scores can be used to more efficiently allocate public health prevention resources, such as pre-exposure prophylaxis. However, the published scores were developed with data sets that comprise predominantly white men who have sex with men (MSM) collected several years prior and recruited from a limited geographic area. Thus, it is unclear how well these scores perform in men of different races or ethnicities or men in different geographic regions...
May 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28403211/the-potential-impact-and-cost-of-focusing-hiv-prevention-on-young-women-and-men-a-modeling-analysis-in-western-kenya
#16
Ramzi A Alsallaq, Jasmine Buttolph, Charles M Cleland, Timothy Hallett, Irene Inwani, Kawango Agot, Ann E Kurth
OBJECTIVE: We compared the impact and costs of HIV prevention strategies focusing on youth (15-24 year-old persons) versus on adults (15+ year-old persons), in a high-HIV burden context of a large generalized epidemic. DESIGN: Compartmental age-structured mathematical model of HIV transmission in Nyanza, Kenya. INTERVENTIONS: The interventions focused on youth were high coverage HIV testing (80% of youth), treatment at diagnosis (TasP, i.e...
2017: PloS One
https://www.readbyqxmd.com/read/28392419/early-phase-dynamics-of-traceable-mcherry-fluorescent-protein-carrying-hiv-1-infection-in-human-peripheral-blood-mononuclear-cells-transplanted-nod-scid-jak3-mice
#17
Nobuyo Higashi-Kuwata, Hiromi Ogata-Aoki, Shin-Ichiro Hattori, Hironori Hayashi, Matthew Danish, Manabu Aoki, Chiemi Shiotsu, Tatsuyoshi Kawamura, Hironobu Ihn, Hisataka Kobayashi, Seiji Okada, Hiroaki Mitsuya
We attempted to elucidate early-phase dynamics of HIV-1 infection using replication-competent, red-fluorescent-protein (mCherry)-labeled HIV-1JR-FL (HIVJR-FL(mC)) and NOD/SCID/Jak3(-/-) mice transplanted with Individual-A's human peripheral blood mononuclear cells (hPBMC)(hNOJ mice). On day 7 following HIVJR-FL(mC) inoculation, mCherry-signal-emitting infection foci were readily identified in the subserosa of 10 of 10 HIVJR-FL(mC)-inoculated hNOJ mice, although infection foci were not located without the mCherry signal in unlabeled HIV-1JR-FL-inoculated mice (n = 6)...
April 6, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28392140/estimated-protective-effectiveness-of-intramuscular-immune-serum-globulin-post-exposure-prophylaxis-during-a-measles-outbreak-in-british-columbia-canada-2014
#18
Mark Bigham, Michelle Murti, Christina Fung, Felicity Hemming, Susan Loadman, Robert Stam, Paul Van Buynder, Marcus Lem
INTRODUCTION: Intramuscular Immune Serum Globulin (IM ISG) is recommended as post-measles exposure prophylaxis (PEP) when administered within 6days of initial exposure, with variable effectiveness in preventing measles disease. Effectiveness of IM ISG PEP in preventing clinical measles was assessed during a 2014 measles outbreak among a religious-affiliated community in British Columbia, Canada. MATERIAL AND METHODS: Fifty-five self-reporting measles susceptible contacts were offered exclusively IM ISG PEP within an eligibility period best surmised to be within 6days of initial measles case exposure...
May 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28387654/ending-aids-as-a-public-health-threat-by-2030-scientific-developments-from-the-2016-interest-conference-in-yaound%C3%A3-cameroon
#19
Catherine A Hankins, Sinata Koulla-Shiro, Peter Kilmarx, Guido Ferrari, Mauro Schechter, Coumba Touré Kane, François Venter, Charles Ab Boucher, Anna-Laura Ross, Debrework Zewdie, Serge Paul Eholié, Elly Katabira
The underpinning theme of the 2016 INTEREST Conference held in Yaoundé, Cameroon, 3-6 May 2016 was ending AIDS as a public health threat by 2030. Focused primarily on HIV treatment, pathogenesis and prevention research in resource-limited settings, the conference attracted 369 active delegates from 34 countries, of which 22 were in Africa. Presentations on treatment optimization, acquired drug resistance, care of children and adolescents, laboratory monitoring and diagnostics, implementation challenges, HIV prevention, key populations, vaccine and cure, hepatitis C, mHealth, financing the HIV response and emerging pathogens, were accompanied by oral, mini-oral and poster presentations...
April 7, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28384841/constrained-binary-classification-using-ensemble-learning-an-application-to-cost-efficient-targeted-prep-strategies
#20
Wenjing Zheng, Laura Balzer, Mark van der Laan, Maya Petersen
Binary classification problems are ubiquitous in health and social sciences. In many cases, one wishes to balance two competing optimality considerations for a binary classifier. For instance, in resource-limited settings, an human immunodeficiency virus prevention program based on offering pre-exposure prophylaxis (PrEP) to select high-risk individuals must balance the sensitivity of the binary classifier in detecting future seroconverters (and hence offering them PrEP regimens) with the total number of PrEP regimens that is financially and logistically feasible for the program...
April 6, 2017: Statistics in Medicine
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