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Preexposure prophylaxis

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https://www.readbyqxmd.com/read/27922719/markov-mixed-effects-modeling-using-electronic-adherence-monitoring-records-identifies-influential-covariates-to-hiv-preexposure-prophylaxis
#1
Kumpal Madrasi, Ayyappa Chaturvedula, Jessica E Haberer, Mark Sale, Michael J Fossler, David Bangsberg, Jared M Baeten, Connie Celum, Craig W Hendrix
Adherence is a major factor in the effectiveness of preexposure prophylaxis (PrEP) for HIV prevention. Modeling patterns of adherence helps to identify influential covariates of different types of adherence as well as to enable clinical trial simulation so that appropriate interventions can be developed. We developed a Markov mixed-effects model to understand the covariates influencing adherence patterns to daily oral PrEP. Electronic adherence records (date and time of medication bottle cap opening) from the Partners PrEP ancillary adherence study with a total of 1147 subjects were used...
December 6, 2016: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27919092/correction-tenofovir-and-emtricitabine-tenofovir-preexposure-prophylaxis-for-herpes-simplex-virus-type-2
#2
(no author information available yet)
No abstract text is available yet for this article.
December 6, 2016: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27898570/are-centers-for-disease-control-and-prevention-guidelines-for-preexposure-prophylaxis-specific-enough-formulation-of-a-personalized-hiv-risk-score-for-pre-exposure-prophylaxis-initiation
#3
Matthew R Beymer, Robert E Weiss, Catherine A Sugar, Linda B Bourque, Gilbert C Gee, Donald E Morisky, Suzanne B Shu, Marjan Javanbakht, Robert K Bolan
BACKGROUND: Preexposure prophylaxis (PrEP) has emerged as a human immunodeficiency virus (HIV) prevention tool for populations at highest risk for HIV infection. Current US Centers for Disease Control and Prevention (CDC) guidelines for identifying PrEP candidates may not be specific enough to identify gay, bisexual, and other men who have sex with men (MSM) at the highest risk for HIV infection. We created an HIV risk score for HIV-negative MSM based on Syndemics Theory to develop a more targeted criterion for assessing PrEP candidacy...
November 28, 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27893604/implementation-of-preexposure-prophylaxis-for-human-immunodeficiency-virus-prevention-among-men-who-have-sex-with-men-at-a-new-england-sexually-transmitted-diseases-clinic
#4
Philip A Chan, Tiffany R Glynn, Catherine E Oldenburg, Madeline C Montgomery, Ashley E Robinette, Alexi Almonte, Julia Raifman, Leandro Mena, Rupa Patel, Kenneth H Mayer, Laura S Beauchamps, Amy S Nunn
BACKGROUND: Preexposure prophylaxis (PrEP) is efficacious in preventing human immunodeficiency virus (HIV) among men who have sex with men (MSM). We assessed PrEP uptake among MSM presenting for services at a sexually transmitted diseases (STD) clinic. METHODS: Men who have sex with men presenting to the Rhode Island STD Clinic between October 2013 and November 2014 were educated about, and offered, PrEP. We categorized PrEP engagement using an implementation cascade to describe gaps in uptake which described MSM who: (1) were educated about PrEP, (2) indicated interest, (3) successfully received follow-up contact, (4) scheduled an appointment, (5) attended an appointment, and (6) initiated PrEP (ie, received a prescription)...
November 2016: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27879478/occurrence-of-hiv-eradication-for-preexposure-prophylaxis-treatment-with-a-deterministic-hiv-model
#5
Hyeygjeon Chang, Claude Moog, Alessandro Astolfi
The authors examine the human immunodeficiency virus (HIV) eradication in this study using a mathematical model and analyse the occurrence of virus eradication during the early stage of infection. To this end they use a deterministic HIV-infection model, modify it to describe the pharmacological dynamics of antiretroviral HIV drugs, and consider the clinical experimental results of preexposure prophylaxis HIV treatment. They also use numerical simulation to model the experimental scenario, thereby supporting the clinical results with a model-based explanation...
December 2016: IET Systems Biology
https://www.readbyqxmd.com/read/27870645/where-next-with-preexposure-prophylaxis
#6
Diarmuid Nugent, Richard Gilson
PURPOSE OF REVIEW: Controlling the HIV epidemic remains a major public health challenge, and there is an urgent need for novel prevention strategies. Preexposure prophylaxis (PrEP) refers to the use of antiretrovirals in HIV-negative people at high risk to prevent infection and has the potential to be an important component in the global effort to end the HIV epidemic by 2030. We review the current evidence for the safety and efficacy of PrEP in its different forms and address emergent issues and concerns regarding its implementation...
November 18, 2016: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/27851714/preexposure-prophylaxis-for-hiv-prevention-in-a-large-integrated-health-care-system-adherence-renal-safety-and-discontinuation
#7
Julia L Marcus, Leo B Hurley, Charles Bradley Hare, Dong Phuong Nguyen, Tony Phengrasamy, Michael J Silverberg, Juliet E Stoltey, Jonathan E Volk
BACKGROUND: Placebo-controlled and open-label studies have demonstrated the safety and efficacy of daily oral preexposure prophylaxis (PrEP) in preventing HIV infection, but data are limited on real-world PrEP use. METHODS: We conducted a cohort study from July 2012 through June 2015 of Kaiser Permanente Northern California members initiating PrEP. We assessed pharmacy refill adherence and discontinuation, decreases in estimated glomerular filtration rate (eGFR), and sexually transmitted infection (STI)/HIV incidence...
December 15, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27846073/brief-report-preventing-hiv-1-infection-in-women-using-oral-preexposure-prophylaxis-a-meta-analysis-of-current-evidence
#8
Brett Hanscom, Holly E Janes, Peter D Guarino, Ying Huang, Elizabeth R Brown, Ying Qing Chen, Scott M Hammer, Peter B Gilbert, Deborah J Donnell
The World Health Organization has issued an early release revision to its antiretroviral guidelines in which PrEP (pre-exposure prophylaxis in the form of daily oral, fixed dose combination tenofovir disoproxil fumarate/emtricitabine) is recommended as a prevention option to all people at substantial risk of acquiring HIV. However, lack of effectiveness in 2 major women-only PrEP trials, VOICE and FEM-PrEP, continues to be a cause for concern about achieving effectiveness for women in Southern Africa. We conducted a series of meta-analyses of oral effectiveness of tenofovir disoproxil fumarate/emtricitabine in women including all 5 randomized placebo-controlled trials that included women...
December 15, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27832147/model-linking-plasma-and-intracellular-tenofovir-emtricitabine-with-deoxynucleoside-triphosphates
#9
Xinhui Chen, Sharon M Seifert, Jose R Castillo-Mancilla, Lane R Bushman, Jia-Hua Zheng, Jennifer J Kiser, Samantha MaWhinney, Peter L Anderson
The coformulation of the nucleos(t)ide analogs (NA) tenofovir (TFV) disoproxil fumarate (TDF) and emtricitabine (FTC) is approved for HIV-infection treatment and prevention. Plasma TFV and FTC undergo complicated hybrid processes to form, accumulate, and retain as their active intracellular anabolites: TFV-diphosphate (TFV-DP) and FTC-triphosphate (FTC-TP). Such complexities manifest in nonlinear intracellular pharmacokinetics (PK). In target cells, TFV-DP/FTC-TP compete with endogenous deoxynucleoside triphosphates (dNTP) at the active site of HIV reverse transcriptase, underscoring the importance of analog:dNTP ratios for antiviral efficacy...
2016: PloS One
https://www.readbyqxmd.com/read/27824624/using-preexposure-prophylaxis-losing-condoms-preexposure-prophylaxis-promotion-may-undermine-safe-sex
#10
Kamair Alaei, Christopher A Paynter, Shao-Chiu Juan, Arash Alaei
No abstract text is available yet for this article.
November 28, 2016: AIDS
https://www.readbyqxmd.com/read/27816387/low-awareness-and-use-of-preexposure-prophylaxis-in-a-diverse-online-sample-of-men-who-have-sex-with-men-in-new-york-city
#11
Sanchit Gupta, David W Lounsbury, Viraj V Patel
No abstract text is available yet for this article.
October 17, 2016: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/27799824/profile-of-cabotegravir-and-its-potential-in-the-treatment-and-prevention-of-hiv-1-infection-evidence-to-date
#12
REVIEW
Thomas Whitfield, Adele Torkington, Clare van Halsema
Modern antiretroviral therapy has demonstrated effectiveness in preexposure prophylaxis (PrEP) and treatment of HIV infection. There is a demand for prevention and treatment regimens that could overcome challenges of improving adherence, toxicity, and dosing convenience. Cabotegravir is an integrase strand transfer inhibitor and an analog of dolutegravir. Unlike dolutegravir, cabotegravir has a long half-life and can be formulated into a long-acting nanosuspension for parenteral administration. Initial pharmokinetic studies in humans have demonstrated adequate drug levels with intramuscular (IM) administration at 4 weekly and 8 weekly intervals, with few interactions with commonly used concomitant medications...
2016: HIV/AIDS: Research and Palliative Care
https://www.readbyqxmd.com/read/27792681/distinct-hiv-1-neutralization-potency-profiles-of-ibalizumab-based-bispecific-antibodies
#13
Ruijiang Song, Craig Pace, Michael S Seaman, Qing Fang, Ming Sun, Chasity D Andrews, Amos Wu, Neal N Padte, David D Ho
BACKGROUND: Preexposure prophylaxis using antiretroviral agents has been shown to effectively prevent human immunodeficiency virus type 1 (HIV-1) acquisition in high-risk populations. However, the efficacy of these regimens is highly variable, which is thought to be largely due to the varying degrees of adherence to a daily intervention in the populations. Passive immunization using broadly neutralizing antibodies (bNAbs) against HIV-1, with their relatively long half-life and favorable safety profile, could provide an alternative to daily preexposure prophylaxis...
December 1, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27734641/preexposure-prophylaxis-for-hiv-an-emerging-preventive-strategy-to-end-ongoing-pandemic
#14
T K Kamble, Pradyumna M Gadewar, Subodh Kansal
HIV/AIDS continues to have an extraordinary public health impact. Although the HIV/AIDS epidemic on the whole is plateauing, it is spreading rapidly among certain populations. We enumerate here some HIV preventive modalities that have been demonstrated to be effective in various target populations if properly implemented and adhered to. Some other new strategies are also showing promise in clinical trials.
April 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27731970/gender-and-sexual-health-same-sex-relationships
#15
James Conniff
A transformation in legal and cultural attitudes toward same-sex relationships is under way nationwide. As same-sex marriage has become legal, the unique social and medicolegal issues faced by individuals in same-sex relationships are evolving rapidly. National organizations have published recommendations for making clinical environments more inclusive of lesbian, gay, bisexual, and queer (LGBQ) individuals and their families. Medical issues for patients in same-sex relationships include a higher risk of HIV infection for men who have sex with men (a majority of new cases of HIV infection occur within relationships), higher rates of obesity among women who have sex with women, and disproportionately high rates of mental health issues and alcohol and drug use...
October 2016: FP Essentials
https://www.readbyqxmd.com/read/27720357/a-medical-care-missed-opportunity-preexposure-prophylaxis-and-young-black-men-who-have-sex-with-men
#16
Renata Arrington-Sanders, Anthony Morgan, Jessica Oidtman, Ian Qian, David Celentano, Chris Beyrer
PURPOSE: HIV disproportionately impacts young black men who have sex with men (YBMSM). Preexposure prophylaxis (PrEP) is an effective strategy that can avert new HIV infections in YBMSM. Barriers exist for YBMSM to access PrEP. METHODS: We sought to determine factors associated with awareness of and willingness to take PrEP in a sample of YBMSM. RESULTS: Only 8% were currently on PrEP despite many (66%) reporting condomless anal sex, a recent provider visit (54%), disclosing their sexual orientation to their regular medical provider (62%), or a willingness to take PrEP (62%)...
December 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/27710082/what-community-based-hiv-prevention-organizations-say-about-their-role-in-biomedical-hiv-prevention
#17
Dawn K Smith, Emily Maier, Joshua Betts, Simone Gray, Brian Kolodziejski, Karen W Hoover
Community-based organizations (CBOs) are critical to delivery of effective HIV prevention because of their reach to key populations. This online survey of a national sample of CBOs assessed their awareness of, interest in, and resources needed to provide nonoccupational postexposure prophylaxis (nPEP), preexposure prophylaxis (PrEP), and HIV treatment as prevention (TasP). One hundred seventy-five CBOs participated: 87 clinical and 88 nonclinical CBOs. For nPEP, PrEP, and TasP, program managers reported that awareness was high (94%, 90%, 85%), meeting current client need was low (20%, 13%, 18%), and the likelihood of increasing their current provision with additional resources was somewhat high (62%, 64%, 62%)...
October 2016: AIDS Education and Prevention: Official Publication of the International Society for AIDS Education
https://www.readbyqxmd.com/read/27626355/disparities-in-uptake-of-hiv-preexposure-prophylaxis-in-a-large-integrated-health-care-system
#18
Julia L Marcus, Leo B Hurley, C Bradley Hare, Michael J Silverberg, Jonathan E Volk
No abstract text is available yet for this article.
October 2016: American Journal of Public Health
https://www.readbyqxmd.com/read/27594106/understanding-community-pharmacist-perceptions-and-knowledge-about-hiv-preexposure-prophylaxis-prep-therapy-in-a-mountain-west-state
#19
Elizabeth J Unni, Nadia Lian, William Kuykendall
OBJECTIVES: Preexposure prophylaxis (PrEP) therapy is prescribed to HIV-negative individuals who are at high risk of contracting the virus to reduce the risk of transmission. Adherence to therapy is essential for optimal treatment outcome, and community pharmacists have an important role in achieving this through patient counseling. The objectives of this study were to measure pharmacists' actual knowledge about HIV PrEP therapy, perceptions about their HIV PrEP therapy knowledge, and intention to counsel patients about PrEP therapy...
September 2016: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/27585939/the-challenges-of-preexposure-prophylaxis-for-bacterial-sexually-transmitted-infections
#20
G Dubourg, D Raoult
Preexposure prophylaxis (PrEP) against HIV is currently the subject of great interest, as clinical trials have shown high efficacy in terms of decreasing transmission among men who have sex with men. Because the prevalence of bacterial sexual transmitted infections (STIs) is increasing within this community, a recent pilot study demonstrated the efficacy of reducing transmission of bacterial STIs by administering PrEP with daily doxycycline to men who have sex with men. This creative initiative raises several questions which are discussed in this review...
September 2016: Clinical Microbiology and Infection
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