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https://www.readbyqxmd.com/read/29334548/plasma-and-intracellular-pharmacokinetics-of-tenofovir-in-patients-switched-from-tenofovir-disoproxil-fumarate-to-tenofovir-alafenamide
#1
Anthony T Podany, Sara H Bares, Joshua Havens, Ravi Dyavar Shetty, Jennifer O'neill, Sarah Lee, Courtney V Fletcher, Susan Swindells, Kimberly K Scarsi
OBJECTIVES: The aim of the study was to compare the intra-individual plasma and intracellular peripheral blood mononuclear cell (PBMC) pharmacokinetics (PK) of tenofovir (TFV) and its intracellular metabolite, tenofovir-diphosphate (TFV-DP) in patients switched from a fixed dose combination (FDC) tablet of tenofovir disoproxil fumarate (TDF)/ emtricitabine (FTC)/ elvitegravir (EVG)/ cobicistat (COBI) to a FDC containing tenofovir alafenamide (TAF)/FTC/EVG/COBI. DESIGN: A single arm, prospective, non-randomized, cross-over, PK study in patients receiving a TDF-containing regimen (TDF 300 mg/ FTC 200 mg/ EVG 150 mg/ COBI 150 mg) switched to a TAF-containing FDC regimen (TAF 10 mg/ FTC 200 mg/ EVG 150 mg/ COBI 150 mg)...
January 13, 2018: AIDS
https://www.readbyqxmd.com/read/29325802/utilization-of-large-volume-zwitterionic-hydrophilic-interaction-liquid-chromatography-for-the-analysis-of-polar-pharmaceuticals-in-aqueous-environmental-samples-benefits-and-limitations
#2
Lise Boulard, Georg Dierkes, Thomas Ternes
Benefits and limitations of HILIC were studied for the analysis of extreme polar organic contaminants in aqueous environmental matrices. A sensitive analytical method was developed and validated for the detection of 11 pharmaceuticals, 15 pharmaceutical metabolites and transformation products and the artificial sweetener acesulfame in aqueous environmental samples. The analytical method consisted of a simple and non-specific sample preparation based on freeze-drying followed by detection with large injection volume (70 μL) zwitterionic HILIC-ESI-MS/MS...
December 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29318459/incidence-and-predictors-of-single-drug-discontinuation-according-to-the-presence-of-hcv-coinfection-in-hiv-patients-from-the-icona-foundation-cohort-study
#3
Sebastiano Leone, Milensu Shanyinde, Alessandro Cozzi Lepri, Fiona C Lampe, Pietro Caramello, Andrea Costantini, Andrea Giacometti, Andrea De Luca, Antonella Cingolani, Francesca Ceccherini Silberstein, Massimo Puoti, Andrea Gori, Antonella d'Arminio Monforte
To evaluate incidence rates of and predictors for any antiretroviral (ART) drug discontinuation by HCV infection status in a large Italian cohort of HIV infected patients. All patients enrolled in ICONA who started combination antiretroviral therapy (cART) containing abacavir or tenofovir or emtricitabine or lamivudine plus efavirenz or rilpivirine or atazanavir/r or darunavir/r (DRV/r) or lopinavir/r or dolutegravir or elvitegravir or raltegravir were included. Multivariate Poisson regression models were used to determine factors independently associated with single ART drug discontinuation...
January 9, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29296098/the-right-combination-treatment-outcomes-among-hiv-positive-patients-initiating-first-line-fixed-dose-antiretroviral-therapy-in-a-public-sector-hiv-clinic-in-johannesburg-south-africa
#4
Kamban Hirasen, Denise Evans, Mhairi Maskew, Ian M Sanne, Kate Shearer, Caroline Govathson, Given Malete, Sheryl A Kluberg, Matthew P Fox
Background: Long-term antiretroviral therapy (ART) adherence is critical for achieving optimal HIV treatment outcomes. Fixed-dose combination (FDC) single-pill regimens, introduced in South Africa in April 2013, has simplified pill taking. We evaluated treatment outcomes among patients initiated on a FDC compared to a similar multi-pill ART regimen in Johannesburg, South Africa. Methods: We conducted a retrospective cohort study of ART-naïve HIV-positive non-pregnant adult (≥18 years) patients without tuberculosis who initiated first-line ART on tenofovir and emtricitabine or lamivudine with efavirenz at Themba Lethu Clinic in Johannesburg, South Africa...
2018: Clinical Epidemiology
https://www.readbyqxmd.com/read/29287028/hbv-or-hcv-coinfection-in-hiv-1-infected-pregnant-women-in-france-prevalence-and-pregnancy-outcomes
#5
Valérie Benhammou, Roland Tubiana, Sophie Matheron, Pierre Sellier, Laurent Mandelbrot, Jérôme LE Chenadec, Emmanuelle Marel, Babak Khoshnood, Josiane Warszawski
BACKGROUND: Chronic HBV or HCV infection is frequent in HIV- infected persons but their impact on pregnant HIV-infected women is understudied. We explored whether these coinfections are associated with adverse pregnancy outcomes and lower response to antiretroviral therapy (ART). METHODS: Pregnancies in HIV-1-infected women included in the ANRS French Perinatal Cohort between 2005 and 2013 were analyzed if HBV and HCV infection statuses were available. RESULTS: Among 4236 women, the prevalence of HBV (HBs Ag+) and HCV (RNA+) were 6...
December 27, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29239232/effectiveness-of-single-and-multiple-tablet-antiretroviral-regimens-in-correctional-setting-for-treatment-experienced-hiv-patients
#6
Andrew Merker, Melissa Badowski, Thomas Chiampas, Sarah E Pérez, Mahesh Patel, Jeremy Young, Ryan Werner
Minimal information is available regarding antiretroviral prescribing patterns and outcomes for HIV patients in correctional systems. This study analyzes single- (STR) and multiple- (MTR) tablet regimen effectiveness in patients receiving HIV telemedicine care through the Illinois Department of Corrections (IDOC). This study involves a retrospective review of HIV-positive adult patients in IDOC on either an STR (efavirenz, rilpivirine, elvitegravir based) or an MTR (emtricitabine/tenofovir with atazanavir/ritonavir, darunavir/ritonavir, or raltegravir)...
January 1, 2017: Journal of Correctional Health Care
https://www.readbyqxmd.com/read/29238237/adolescent-pre-exposure-prophylaxis-for-hiv-prevention-current-perspectives
#7
REVIEW
Daisy Maria Machado, Alexandre Machado de Sant'Anna Carvalho, Rachel Riera
Adolescents are a critical population that is disproportionately impacted by the HIV epidemic. More than 2 million adolescents between the age group of 10 and 19 years are living with HIV, and millions are at risk of infection. HIV risks are considerably higher among girls, especially in high-prevalence settings such as eastern and southern Africa. In addition to girls, there are other vulnerable adolescent subgroups, such as teenagers, who use intravenous (IV) drugs, gay and bisexual boys, transgender youth, male sex workers, and people who fall into more than one of these categories...
2017: Adolescent Health, Medicine and Therapeutics
https://www.readbyqxmd.com/read/29229609/recent-advances-in-pre-exposure-prophylaxis-for-hiv
#8
REVIEW
Monica Desai, Nigel Field, Robert Grant, Sheena McCormack
Although pre-exposure prophylaxis (PrEP)-the use of antiretroviral drugs by non-infected people to prevent the acquisition of HIV-is a promising preventive option, important public health questions remain. Daily oral emtricitabine (FTC)-tenofovir disoproxil fumarate (TDF) is highly efficacious in preventing the acquisition of HIV in people at risk as a result of a range of different types of sexual exposure. There is good evidence of efficacy in women and men, and when men who have sex with men use event based dosing...
December 11, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29229440/post-exposure-prophylaxis-with-doxycycline-to-prevent-sexually-transmitted-infections-in-men-who-have-sex-with-men-an-open-label-randomised-substudy-of-the-anrs-ipergay-trial
#9
Jean-Michel Molina, Isabelle Charreau, Christian Chidiac, Gilles Pialoux, Eric Cua, Constance Delaugerre, Catherine Capitant, Daniela Rojas-Castro, Julien Fonsart, Béatrice Bercot, Cécile Bébéar, Laurent Cotte, Olivier Robineau, François Raffi, Pierre Charbonneau, Alexandre Aslan, Julie Chas, Laurence Niedbalski, Bruno Spire, Luis Sagaon-Teyssier, Diane Carette, Soizic Le Mestre, Veronique Doré, Laurence Meyer
BACKGROUND: Increased rates of sexually transmitted infections (STIs) have been reported among men who have sex with men. We aimed to assess whether post-exposure prophylaxis (PEP) with doxycycline could reduce the incidence of STIs. METHODS: All participants attending their scheduled visit in the open-label extension of the ANRS IPERGAY trial in France (men aged 18 years or older having condomless sex with men and using pre-exposure prophylaxis for HIV with tenofovir disoproxil fumarate plus emtricitabine) were eligible for inclusion in this open-label randomised study...
December 8, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29228144/randomized-controlled-trial-of-daily-text-messages-to-support-adherence-to-prep-in-at-risk-for-hiv-individuals-the-tapir-study
#10
David J Moore, Sonia Jain, Michael P Dubé, Eric S Daar, Xiaoying Sun, Jason Young, Katya Corado, Eric Ellorin, Joel Milam, Deborah Collins, Jill Blumenthal, Brookie M Best, Peter Anderson, Richard Haubrich, Sheldon R Morris
Background: Adherence is critical for efficacy of tenofovir disoproxil fumarate/emtricitabine as pre-exposure prophylaxis (PrEP). Methods: Between 02/2013 and 02/2016, 398 men who have sex with men and transgender women were randomized 1:1 to receive individualized Texting for Adherence Building (iTAB) or standard care (SoC) for 48 weeks. The primary endpoint was dried blood spot (DBS) tenofovir (TFV-DP) concentrations at both week 12 and week 48 (or the last on-drug visit) of >719 fmol/punch consistent with ≥4 doses per week (i...
November 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29225131/role-of-tenofovir-alafenamide-taf-in-the-treatment-and-prophylaxis-of-hiv-and-hbv-infections
#11
REVIEW
Erik De Clercq
Tenofovir (TFV) is the cornerstone of the treatment and prophylaxis of HIV infections. It has been routinely used in its prodrug form TDF (tenofovir disoproxil fumarate) combined with emtricitabine ((-)FTC) and other antiretroviral agents. TDF has now been replaced by TAF (tenofovir alafenamide) which allows better uptake by the lymphoid tissue. In combination with elvitegravir (E), cobicistat (C), emtricitabine (F), TAF can be advocated as an STR (single tablet regimen, Genvoya®) for the treatment of HIV infections...
December 7, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29216682/simultaneous-determination-and-validation-of-emtricitabine-rilpivirine-and-tenofovir-from-biological-samples-using-lc-and-ce-methods
#12
Mehmet Gumustas, Mehmet Gokhan Caglayan, Feyyaz Onur, Sibel A Ozkan
A combination of antiretroviral agents is frequently used in effective treatment of the Human Immunodeficiency Virus infection. In this study, two different separation methods are presented for the simultaneous determination of emtricitabine, rilpivirine, and tenofovir from raw materials and urine samples. Developed liquid chromatography and capillary electrophoresis methods were thoroughly optimized for high analytical performances. Optimization of multiple variables at the same time by performing a minimum number of experiments was achieved by the Box-Behnken design, which is an experimental design in Response Surface Methodology, in capillary electrophoresis...
December 7, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29210835/-medication-adherence-in-a-nationwide-cohort-of-veterans-initiating-pre-exposure-prophylaxis-prep-to-prevent-hiv-infection
#13
Puja van Epps, Marissa Maier, Brian Lund, M Bryant Howren, Brice Beck, Lauren Beste, Avy Skolnik, Mary Vaughan-Sarrazin, Michael E Ohl
BACKGROUND: Current guidelines for pre-exposure prophylaxis (PrEP) to prevent HIV infection call for long-term, daily use of tenofovir disoproxil fumarate / emtricitabine (TDF/FTC). Little is known about long-term adherence with TDF/FTC prescribed for PrEP in routine clinical practice. SETTING: Veterans Health Administration (VHA) clinics METHODS:: We used VHA data to create a nationwide cohort of Veterans initiating PrEP between July 1, 2012 and June 30, 2016. We examined pharmacy refill data to estimate adherence based on the proportion of days covered (PDC) by TDF/FTC in the first year, and used logistic regression to identify patient characteristics associated with high adherence (i...
November 27, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29210830/tenofovir-associated-nephrotoxicity-among-a-us-national-historical-cohort-of-hiv-infected-veterans-risk-modification-by-concomitant-antiretrovirals
#14
Joanne LaFleur, Adam P Bress, Stephen Esker, Kristin Knippenberg, Jacob Crook, Heather Nyman, Roger Bedimo, Pablo Tebas, Lisa Rosenblatt
BACKGROUND: Tenofovir disoproxil fumarate (TDF) has been associated with renal complications. The third agent in TDF-containing antiretroviral regimens may modify that risk. We compared renal adverse outcomes among treatment-naïve HIV-infected patients initiating TDF-containing regimens including efavirenz (EFV) or other agents. SETTING: This population-based historical cohort study used national Veterans Health Administration (VHA) clinical and administrative datasets to identify treatment-naïve HIV-infected veterans initiating antiretroviral therapy (ART) with TDF/emtricitabine (FTC)+EFV, rilpivirine (RPV), elvitegravir/cobicistat (EVG/c), or ritonavir (RTV)-boosted protease inhibitors (PIs) from 2003-2015...
November 27, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29210777/costs-and-benefits-of-on-demand-hiv-preexposure-prophylaxis-in-msm
#15
Isabelle Durand-Zaleski, Pierre Mutuon, Isabelle Charreau, Cecile Tremblay, Daniela Rojas, Gilles Pialoux, Christian Chidiac, Catherine Capitant, Bruno Spire, Laurent Cotte, Julie Chas, Laurence Meyer, Jean Michel Molina
OBJECTIVES: We undertook the economic evaluation of the double-blind randomized ANRS-IPERGAY trial, which showed the efficacy of on-demand preexposure prophylaxis (PrEP) with tenofovir disoproxil fumarate (TDF)-emtricitabine (FTC) in preventing HIV infection among high-risk MSM. DESIGN AND METHODS: The economic evaluation was prospective. Counseling, drugs (TDF-FTC at &OV0556;500.88 for 30 tablets), tests, visits, and hospital admissions were valued based on in-trial use...
January 2, 2018: AIDS
https://www.readbyqxmd.com/read/29210626/short-term-cost-and-efficiency-analysis-of-raltegravir-versus-atazanavir-ritonavir-or-darunavir-ritonavir-for-treatment-naive-adults-with-hiv-1-infection-in-spain
#16
Ashley E Davis, Anita J Brogan, Bridgett Goodwin, Gonzalo Nocea, Virginia Lozano
INTRODUCTION: The AIDS Clinical Trial Group (ACTG) 5257 clinical trial showed that raltegravir (RAL) was superior to atazanavir/ritonavir (ATV/r) and darunavir/ritonavir (DRV/r), when used in combination with emtricitabine/tenofovir DF (FTC/TDF), in a 96-week composite endpoint combining virologic efficacy and tolerability for treatment-naive adults with HIV-1 infection. This study aimed to estimate the efficiency associated with these three regimens in Spain. METHODS: An economic model was developed to estimate costs for antiretroviral drugs, adverse event management, and HIV care for individuals initiating first-line therapy...
November 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/29210336/simplification-to-dual-therapy-containing-lamivudine-and-darunavir-ritonavir-or-atazanavir-ritonavir-in-hiv-infected-patients-on-virologically-suppressive-antiretroviral-therapy
#17
Leonardo Calza, Matteo Cafaggi, Vincenzo Colangeli, Marco Borderi, Enrico Barchi, Massimiliano Lanzafame, Stefano Nicole', Anna Maria Degli Antoni, Isabella Bon, Maria Carla Re, Pierluigi Viale
BACKGROUND: The ritonavir-boosted protease inhibitor (PI/r)-based dual regimens are warranted in order to optimize the combination antiretroviral therapy (cART), prevent the long-term toxicity and reduce the cost of treatments. METHODS: We performed an observational, retrospective study of HIV-infected patients on suppressive antiretroviral therapy who switched to a dual regimen containing lamivudine (3TC) plus darunavir/ritonavir (DRV/r) 800/100 mg qd or atazanavir/ritonavir (ATV/r) 300/100 mg qd...
December 6, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/29208244/role-of-nucleoside-transporters-in-transplacental-pharmacokinetics-of-nucleoside-reverse-transcriptase-inhibitors-zidovudine-and-emtricitabine
#18
S Karbanova, L Cerveny, M Ceckova, Z Ptackova, L Jiraskova, S Greenwood, F Staud
INTRODUCTION: Zidovudine (AZT) and emtricitabine (FTC) are effective and well tolerated antiretroviral drugs, routinely used in the prevention of perinatal HIV transmission. However, precise mechanism(s) involved in their transfer from mother to fetus are not fully elucidated. Since both drugs are nucleoside analogues, we hypothesized that the mechanisms of their transplacental passage might include equilibrative nucleoside transporters, ENT1 and/or ENT2. METHODS: To address this issue, we performed in vitro accumulation assays in the BeWo placental trophoblast cell line, ex vivo uptake studies in fresh villous fragments isolated from human placenta and in situ dually perfused rat term placenta experiments...
December 2017: Placenta
https://www.readbyqxmd.com/read/29205871/pharmacogenetic-analysis-of-the-model-based-pharmacokinetics-of-five-anti-hiv-drugs-how-does-this-influence-the-effect-of-aging
#19
Jingxian Chen, Farida S Akhtari, Michael J Wagner, Oscar Suzuki, Tim Wiltshire, Alison A Motsinger-Reif, Julie B Dumond
Analysis of aging and pharmacogenetics (PGx) on antiretroviral pharmacokinetics (PKs) could inform precision dosing for older human HIV-infected patients. Seventy-four participants receiving either atazanavir/ritonavir (ATV/RTV) or efavirenz (EFV) with tenofovir/emtricitabine (TFV/FTC) provided PK and PGx information. Aging-PGx-PK association and interaction analyses were conducted using one-way analysis of variance (ANOVA), multiple linear regression, and Random Forest ensemble methods. Our analyses associated unbound ATV disposition with multidrug resistance protein (MRP)4, RTV with P-glycoprotein (P-gp), and EFV with cytochrome P450 (CYP)2B6 and MRP4 genetic variants...
December 3, 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/29199100/universal-test-and-treat-and-the-hiv-epidemic-in-rural-south-africa-a-phase-4-open-label-community-cluster-randomised-trial
#20
Collins C Iwuji, Joanna Orne-Gliemann, Joseph Larmarange, Eric Balestre, Rodolphe Thiebaut, Frank Tanser, Nonhlanhla Okesola, Thembisa Makowa, Jaco Dreyer, Kobus Herbst, Nuala McGrath, Till Bärnighausen, Sylvie Boyer, Tulio De Oliveira, Claire Rekacewicz, Brigitte Bazin, Marie-Louise Newell, Deenan Pillay, François Dabis
BACKGROUND: Universal antiretroviral therapy (ART), as per the 2015 WHO recommendations, might reduce population HIV incidence. We investigated the effect of universal test and treat on HIV acquisition at population level in a high prevalence rural region of South Africa. METHODS: We did a phase 4, open-label, cluster randomised trial of 22 communities in rural KwaZulu-Natal, South Africa. We included individuals residing in the communities who were aged 16 years or older...
November 30, 2017: Lancet HIV
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