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https://www.readbyqxmd.com/read/28108879/patterns-of-social-affiliations-and-healthcare-engagement-among-young-black-men-who-have-sex-with-men
#1
Rachel L Behler, Benjamin T Cornwell, John A Schneider
Little work has examined how individuals' social affiliations-the venues in which they meet friends and engage in informal social interaction-influence their engagement with public health services. We investigate how links to these local places shape access to information and exposure to health-seeking behavior. Using longitudinal data from a respondent-driven sample of 618 young black men who have sex with men (YBMSM) in Chicago, we identify different sets of social venues that connect YBMSM. We then examine how YBMSM's connections within this network influence their receipt of HIV prevention and treatment services and knowledge of pre-exposure prophylaxis (PrEP)...
January 21, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28108878/stigma-and-conspiracy-beliefs-related-to-pre-exposure-prophylaxis-prep-and-interest-in-using-prep-among-black-and-white-men-and-transgender-women-who-have-sex-with-men
#2
Lisa A Eaton, Seth C Kalichman, Devon Price, Stephanie Finneran, Aerielle Allen, Jessica Maksut
The HIV/AIDS epidemic in the US continues to persist, in particular, among race, sexual orientation, and gender minority populations. Pre-exposure prophylaxis (PrEP), or using antiretroviral medications for HIV prevention, is an effective option, but uptake of PrEP has been slow. Sociocultural barriers to using PrEP have been largely underemphasized, yet have the potential to stall uptake and, therefore, warrant further understanding. In order to assess the relationships between potential barriers to PrEP (i...
January 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28108701/willingness-to-use-and-have-sex-with-men-taking-hiv-pre-exposure-prophylaxis-prep-results-of-online-surveys-of-australian-gay-and-bisexual-men-2011-2015
#3
Martin Holt, Toby Lea, Heather-Marie Schmidt, Johann Kolstee, Jeanne Ellard, Dean Murphy, Hong-Ha Truong, John de Wit
OBJECTIVE: Assess willingness to use HIV pre-exposure prophylaxis (PrEP), support for others using it and willingness to have sex with partners using PrEP among Australian gay and bisexual men (GBM). METHODS: National, online cross-sectional surveys of Australian GBM were conducted in 2011, 2013 and 2015. Scales measuring support for and willingness to have sex with men using PrEP were developed in 2015 using factor analysis. Trends and associations with key measures were analysed using multivariate logistic regression...
January 20, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28101813/a-multi-us-city-assessment-of-awareness-and-uptake-of-pre-exposure-prophylaxis-prep-for-hiv-prevention-among-black-men-and-transgender-women-who-have-sex-with-men
#4
Lisa A Eaton, Derrick D Matthews, Daniel D Driffin, Leigh Bukowski, Patrick A Wilson, Ron D Stall
The HIV epidemic among Black men and transgender women who have sex with men (BMTW) demands an urgent public health response. HIV point prevalence among this population ranges from 25 to 43%-a rate far exceeding any other group. Pre-exposure prophylaxis (PrEP) for HIV prevention is a very promising prevention tool; however, its full potential to slow the epidemic has yet to be realized. For the current study, random time-location sampling at Black Gay Pride Events was used to collect data from N = 1274 BMTW, from five US cities, reporting HIV-negative/unknown status...
January 18, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28100757/pre-exposure-prophylaxis-making-history
#5
Mags Portman
No abstract text is available yet for this article.
February 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28095307/pre-exposure-prophylaxis-and-antiretroviral-treatment-interventions-with-drug-resistance
#6
REVIEW
Komi Afassinou, Faraimunashe Chirove, Keshlan S Govinder
We introduce a model for HIV/AIDS which can be utilized to assess the impact of combining pre-exposure prophylaxis (PrEP) and antiretroviral drugs (ARVs) use interventions (incorporating drug resistance). Mathematical and numerical analyses are carried out to investigate the effects of the combined controls in the presence of PrEP drug resistance. Our results predict a significant decrease in the number of new HIV infections when PrEP and ARVs are concurrently implemented at high levels. The results also reveal that PrEP drug resistance has the potential to slow down or reverse the effects of PrEP, especially at low efficacy levels...
January 14, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28080947/hiv-testing-intervention-development-among-men-who-have-sex-with-men-in-the-developed-world
#7
Paul Flowers, Claudia Estcourt, Pam Sonnenberg, Fiona Burns
HIV testing is a 'gateway' technology, enabling access to treatment and HIV prevention. Biomedical approaches to prevention, such as pre-exposure prophylaxis and treatment as prevention, require accurate and regular HIV test results. HIV testing also represents a powerful 'teachable moment' for behavioural prevention. An increasing range of HIV tests and the emergence of self-managed diagnostic technologies (e.g. self-testing) means there is now considerable diversification of when, where and how results are available to those who test...
January 13, 2017: Sexual Health
https://www.readbyqxmd.com/read/28077589/trimethoprim-sulfamethoxazole-prophylaxis-during-live-malaria-sporozoite-immunization-induces-long-lived-homologous-and-heterologous-protective-immunity-against-sporozoite-challenge
#8
Charlotte V Hobbs, Charles Anderson, Jillian Neal, Tejram Sahu, Solomon Conteh, Tatiana Voza, Jean Langhorne, William Borkowsky, Patrick E Duffy
Trimethoprim-sulfamethoxazole (TMP-SMX) is widely used in malaria-endemic areas in human immunodeficiency virus (HIV)-infected children and HIV-uninfected, HIV-exposed children as opportunistic infection prophylaxis. Despite the known effects that TMP-SMX has in reducing clinical malaria, its impact on development of malaria-specific immunity in these children remains poorly understood. Using rodent malaria models, we previously showed that TMP-SMX, at prophylactic doses, can arrest liver stage development of malaria parasites and speculated that TMP-SMX prophylaxis during repeated malaria exposures would induce protective long-lived sterile immunity targeting pre-erythrocytic stage parasites in mice...
January 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28073964/single-dose-pharmacokinetics-and-pharmacodynamics-of-oral-tenofovir-and-emtricitabine-in-blood-saliva-and-rectal-tissue-a-sub-study-of-the-anrs-ipergay-trial
#9
Julien Fonsart, Sentob Saragosti, Milad Taouk, Gilles Peytavin, Lane Bushman, Isabelle Charreau, Allan Hance, Lauriane Goldwirt, Stéphane Morel, Fabrizio Mammano, Bénédicte Loze, Catherine Capitant, François Clavel, Nadia Mahjoub, Laurence Meyer, Peter L Anderson, Constance Delaugerre, Jean-Michel Molina
OBJECTIVES: In the ANRS IPERGAY pre-exposure prophylaxis (PrEP) trial, a single dose of tenofovir disoproxil fumarate and emtricitabine was taken orally 2-24 h before sexual intercourse. A sub-study was conducted to assess the pharmacokinetics of tenofovir and emtricitabine in blood, saliva and rectal tissue following this initial oral intake. METHODS: Plasma, PBMC, saliva and rectal tissue sampling was performed over 24 h in 12 seronegative men before enrolment in the ANRS IPERGAY trial, following a single dose of 600 mg tenofovir disoproxil fumarate/400 mg emtricitabine...
September 28, 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28063544/the-prevention-of-early-onset-neonatal-group-b-streptococcal-disease
#10
Deborah Money, Victoria M Allen
OBJECTIVE: To review the evidence in the literature and to provide recommendations on the management of pregnant women in labour for the prevention of early-onset neonatal group B streptococcal disease. The key revisions in this updated guideline include changed recommendations for regimens for antibiotic prophylaxis, susceptibility testing, and management of women with pre-labour rupture of membranes. OUTCOMES: Maternal outcomes evaluated included exposure to antibiotics in pregnancy and labour and complications related to antibiotic use...
December 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28061753/treatment-efficacy-of-azithromycin-1%C3%A2-g-single-dose-versus-doxycycline-100%C3%A2-mg-twice-daily-for-7%C3%A2-days-for-the-treatment-of-rectal-chlamydia-among-men-who-have-sex-with-men-a-double-blind-randomised-controlled-trial-protocol
#11
Andrew Lau, Fabian Kong, Christopher K Fairley, Basil Donovan, Marcus Chen, Catriona Bradshaw, Mark Boyd, Janaki Amin, Peter Timms, Sepehr Tabrizi, David G Regan, David A Lewis, Anna McNulty, Jane S Hocking
BACKGROUND: Rectal infection with Chlamydia trachomatis is one of the most common bacterial sexually transmissible infections among men who have sex with men (MSM) with diagnosis rates continuing to rise. Current treatment guidelines recommend either azithromycin 1 g single dose or doxycycline 100 mg twice daily for 7 days. However, there are increasing concerns about treatment failure with azithromycin. We are conducting the first randomised controlled trial (RCT) to compare treatment efficacy of azithromycin versus doxycycline for the treatment of rectal chlamydia in MSM...
January 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28060019/defining-the-hiv-pre-exposure-prophylaxis-care-continuum
#12
A S Nunn, L Brinkley-Rubinstein, C E Oldenburg, K H Mayer, M Mimiaga, R Patel, P A Chan
No abstract text is available yet for this article.
January 4, 2017: AIDS
https://www.readbyqxmd.com/read/28060011/topical-tenofovir-protects-against-vaginal-shiv-infection-in-macaques-co-infected-with-chlamydia-trachomatis-and-trichomonas-vaginalis
#13
Natalia Makarova, Tara Henning, Andrew Taylor, Chuong Dinh, Jonathan Lipscomb, Rachael Aubert, Debra Hanson, Christi Phillips, John Papp, James Mitchell, Janet Mcnicholl, Gerardo J Garcia-Lerma, Walid Heneine, Ellen Kersh, Charles Dobard
BACKGROUND: Chlamydia trachomatis (CT) and Trichomonas vaginalis (TV), two prevalent sexual transmitted infections, are known to increase HIV risk in women and could potentially diminish pre-exposure prophylaxis (PrEP) efficacy, particularly for topical interventions that rely on local protection. We investigated in macaques whether co-infection with CT/TV reduces protection by vaginal TFV gel. METHODS: Vaginal TFV gel dosing previously shown to provide 100% or 74% protection when applied either 30 minutes or 3 days before SHIV challenge was assessed in pigtailed macaques co-infected with CT/TV and challenged twice-weekly with SHIV162p3 for up to 10 weeks (2 menstrual cycles)...
January 4, 2017: AIDS
https://www.readbyqxmd.com/read/28058111/impacts-and-shortcomings-of-genetic-clustering-methods-for-infectious-disease-outbreaks
#14
Art F Y Poon
For infectious diseases, a genetic cluster is a group of closely related infections that is usually interpreted as representing a recent outbreak of transmission. Genetic clustering methods are becoming increasingly popular for molecular epidemiology, especially in the context of HIV where there is now considerable interest in applying these methods to prioritize groups for public health resources such as pre-exposure prophylaxis. To date, genetic clustering has generally been performed with ad hoc algorithms, only some of which have since been encoded and distributed as free software...
July 2016: Virus Evolution
https://www.readbyqxmd.com/read/28031062/maximizing-the-benefits-of-art-and-prep-in-resource-limited-settings
#15
G Akudibillah, A Pandey, J Medlock
Antiretroviral therapy (ART) is increasingly being used as an HIV-prevention tool, administered to uninfected people with ongoing HIV exposure as pre-exposure prophylaxis (PrEP) and to infected people to reduce their infectiousness. We used a modelling approach to determine the optimal population-level combination of ART and PrEP allocations required in South Africa to maximize programme effectiveness for four outcome measures: new infections, infection-years, death and cost. We considered two different strategies for allocating treatment, one that selectively allocates drugs to sex workers and one that does not...
December 29, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/28025734/reaching-key-populations-prep-uptake-in-an-urban-health-care-system-in-the-bronx-new-york
#16
Cedric H Bien, Viraj V Patel, Oni J Blackstock, Uriel R Felsen
Pre-exposure prophylaxis (PrEP) has been established as an effective HIV prevention tool, but real world studies are limited. To inform dissemination efforts, we sought to describe individuals prescribed PrEP in the largest health care system in the Bronx, New York, an urban region with a high burden of HIV. We used a clinical database and chart review to identify individuals prescribed PrEP between 2011 and 2015 (n = 108). A majority were Black and Hispanic, half were men who have sex with men, and nearly a third were cisgender women who have sex with men...
December 26, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/28024582/evaluation-of-poly-lactic-co-glycolic-acid-and-poly-dl-lactide-co-%C3%AE%C2%B5-caprolactone-electrospun-fibers-for-the-treatment-of-hsv-2-infection
#17
Stella E Aniagyei, Lee B Sims, Danial A Malik, Kevin M Tyo, Keegan C Curry, Woihwan Kim, Daniel A Hodge, Jinghua Duan, Jill M Steinbach-Rankins
More diverse multipurpose prevention technologies are urgently needed to provide localized, topical pre-exposure prophylaxis against sexually transmitted infections (STIs). In this work, we established the foundation for a multipurpose platform, in the form of polymeric electrospun fibers (EFs), to physicochemically treat herpes simplex virus 2 (HSV-2) infection. To initiate this study, we fabricated different formulations of poly(lactic-co-glycolic acid) (PLGA) and poly(dl-lactide-co-ε-caprolactone) (PLCL) EFs that encapsulate Acyclovir (ACV), to treat HSV-2 infection in vitro...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28004219/progress-and-challenges-in-ending-hiv-and-aids-in-australia
#18
Martin Holt
This review considers Australia's progress towards the elimination of HIV and AIDS, as specified in international targets. In particular, it considers the reaction to recent media reports that Australia has 'ended AIDS' and evaluates progress towards reducing HIV transmission. Recent surveillance data and research show significant improvements in HIV testing and treatment, but countervailing trends such as increased condomless sex between gay and other men who have sex with men. Pre-exposure prophylaxis (PrEP) is being implemented at scale in some jurisdictions, with the hope that this will significantly alter the trajectory of Australia's HIV epidemic, which has been stable for the last five years (at around 1000-1100 infections per year)...
December 21, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/28003117/facebook-network-structure-and-awareness-of-preexposure-prophylaxis-among-young-men-who-have-sex-with-men
#19
Aditya S Khanna, Phil Schumm, John A Schneider
BACKGROUND: Young Black men who have sex with men (YBMSM) are the only population in the United States who have experienced rising human immunodeficiency virus incidence over the past decade. Consistent pre-exposure prophylaxis (PrEP) use can substantially reduce the risk of human immunodeficiency virus acquisition. What differentiates those who become aware of PrEP, and those who do not, remains largely unknown. METHODS: The social networks of YBMSM can impact their awareness of PrEP; to examine this impact, we used two waves of Facebook data from "uConnect"-a longitudinal cohort study of YBMSM in Chicago (n = 266)...
November 29, 2016: Annals of Epidemiology
https://www.readbyqxmd.com/read/27999325/pharmacokinetics-of-the-antiviral-lectin-griffithsin-administered-by-different-routes-indicates-multiple-potential-uses
#20
Christopher Barton, J Calvin Kouokam, Harrell Hurst, Kenneth E Palmer
Griffithsin (GRFT) is a red alga-derived lectin with demonstrated broad spectrum antiviral activity against enveloped viruses, including severe acute respiratory syndrome-Coronavirus (SARS-CoV), Japanese encephalitis virus (JEV), hepatitis C virus (HCV), and herpes simplex virus-2 (HSV-2). However, its pharmacokinetic profile remains largely undefined. Here, Sprague Dawley rats were administered a single dose of GRFT at 10 or 20 mg/kg by intravenous, oral, and subcutaneous routes, respectively, and serum GRFT levels were measured at select time points...
December 17, 2016: Viruses
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