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Antiretroviral resistance

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https://www.readbyqxmd.com/read/28333295/drug-resistance-in-antiretroviral-naive-children-newly-diagnosed-with-hiv-1-in-manaus-amazonas
#1
Solange Dourado de Andrade, Meritxell Sabidó, Wuelton Marcelo Monteiro, Adele Schwartz Benzaken, Amilcar Tanuri
Objectives: To determine the prevalence of drug resistance mutations (DRM), the prevalence of drug susceptibility [transmitted drug resistance (TDR)] and the prevalence of HIV-1 variants among treatment-naive HIV-infected children in Manaus, Amazonas state, Brazil. Methods: Children born to HIV-infected mothers and diagnosed with HIV in an HIV reference service centre and with available pol sequence between 2010 and 2015 prior to antiretroviral initiation were included...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333232/prevalence-of-hiv-1-drug-resistance-in-treated-patients-with-viral-load-50%C3%A2-copies-ml-a-2014-french-nationwide-study
#2
L Assoumou, C Charpentier, P Recordon-Pinson, M Grudé, C Pallier, L Morand-Joubert, S Fafi-Kremer, A Krivine, B Montes, V Ferré, M Bouvier-Alias, J-C Plantier, J Izopet, M-A Trabaud, S Yerly, J Dufayard, C Alloui, L Courdavault, H Le Guillou-Guillemette, A Maillard, C Amiel, A Vabret, C Roussel, S Vallet, J Guinard, A Mirand, A Beby-Defaux, F Barin, A Allardet-Servent, R Ait-Namane, M Wirden, C Delaugerre, V Calvez, M-L Chaix, D Descamps, S Reigadas
Background: Surveillance of HIV-1 resistance in treated patients with a detectable viral load (VL) is important to monitor, in order to assess the risk of spread of resistant viruses and to determine the proportion of patients who need new antiretroviral drugs with minimal cross-resistance. Methods: The HIV-1 protease and reverse transcriptase (RT) and integrase genes were sequenced in plasma samples from 782 consecutive patients on failing antiretroviral regimens, seen in 37 specialized centres in 2014...
February 25, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28329343/commonly-transmitted-hiv-1-drug-resistance-mutations-in-reverse-transcriptase-and-protease-in-antiretroviral-treatment-na%C3%A3-ve-patients-do-not-affect-response-to-tenofovir-disoproxil-fumarate-or-tenofovir-alafenamide-containing-regimens
#3
Nicolas A Margot, Pamela Wong, Rima Kulkarni, Kirsten White, Danielle Porter, Michael E Abram, Christian Callebaut, Michael D Miller
Background.: The presence of transmitted drug-resistance mutations (TDRM) in antiretroviral (ARV) treatment-naïve patients can adversely affect the outcome of ARV therapy. Methods.: Resistance testing was conducted in 6704 ARV-naïve subjects predominantly from the U.S. and Europe in 9 Gilead clinical studies from 2000 to 2013. Results.: The presence of TDRM increased during this period (5.2% to 11.4%), primarily driven by non-nucleoside RT inhibitor resistance mutations (NNRTI; 0...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329236/impact-of-hiv-drug-resistance-on-hiv-aids-associated-mortality-new-infections-and-antiretroviral-therapy-program-costs-in-sub-saharan-africa
#4
Andrew N Phillips, John Stover, Valentina Cambiano, Fumiyo Nakagawa, Michael R Jordan, Deenan Pillay, Meg Doherty, Paul Revill, Silvia Bertagnolio
To inform the level of attention to be given by antiretroviral therapy (ART) programs to HIV drug resistance (HIVDR), we used an individual-level model to estimate its impact on future AIDS deaths, HIV-incidence and ART program costs in sub-Saharan Africa (SSA) for a range of program situations. We applied this to SSA through the Spectrum-Goals model. In a situation in which current levels of pre-treatment HIVDR are over 10% (mean 15%), 16% of AIDS deaths (890,000 deaths) , 9% of new infections (450,000) and 8% ($6...
February 17, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329212/clinical-status-of-adolescents-with-perinatal-hiv-at-transfer-to-adult-care-in-the-uk-ireland
#5
Intira Jeannie Collins, Caroline Foster, Anna Tostevin, Pat Tookey, Andrew Riordan, David Dunn, D M Gibb, Ali Judd
Background.: Increasing numbers of children infected perinatally with human immunodeficiency virus (HIV) are surviving to adolescence and transitioning to adult care, yet there are scarce data on their clinical status at transfer. Methods.: We analyzed prospective cohort data from the UK/Ireland national Collaborative HIV Pediatric Study (CHIPS). Clinical status at last pediatric clinic visit prior to transfer was described. Factors associated with higher CD4 cell count and viral load (VL) suppression<400 c/mL among patients on antiretroviral therapy (ART) at transfer were assessed using linear and logistic regression, respectively...
March 9, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328548/characterization-of-hiv-seroconverters-in-a-tdf-ftc-prep-study-hptn-067-adapt
#6
Mariya V Sivay, Maoji Li, Estelle Piwowar-Manning, Yinfeng Zhang, Sarah E Hudelson, Mark A Marzinke, Rivet K Amico, Andrew Redd, Craig W Hendrix, Peter L Anderson, Kevin Bokoch, Linda Gail-Bekker, Frits van Griensven, Sharon Mannheimer, James P Hughes, Robert Grant, Susan H Eshleman
BACKGROUND: HPTN 067/ADAPT evaluated tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) pre-exposure prophylaxis (PrEP) in women (South Africa) and men who have sex with men (Thailand, US). Participants received once-weekly directly observed TDF/FTC (DOT), and were then randomized to daily, time-driven, or event-driven PrEP. This report describes characterization of 12 HIV seroconversion events in this trial. METHODS: HIV rapid testing was performed at study sites...
March 22, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28328546/temporal-patterns-and-drug-resistance-in-csf-viral-escape-among-art-experienced-hiv-1-infected-adults
#7
Shibani S Mukerji, Vikas Misra, David Lorenz, Anna M Cervantes-Arslanian, Jennifer Lyons, Spyridon Chalkias, Alysse Wurcel, Deirdre Burke, Nagagopal Venna, Susan Morgello, Igor J Koralnik, Dana Gabuzda
BACKGROUND: Cerebrospinal fluid (CSF) viral escape is an increasingly recognized clinical event among HIV-1-infected adults. We analyzed longitudinal data and drug-resistance mutations to characterize profiles of HIV-1-infected patients on antiretroviral therapy with discordant CSF and plasma HIV-1 RNA levels. METHODS: Forty-one cases of CSF escape defined as detectable CSF HIV-1 RNA when plasma levels were undetectable, or HIV-1 RNA >0.5-log higher in CSF than plasma, were identified from Boston Hospitals and National NeuroAIDS Tissue Consortium (NNTC) from 2005-2016...
March 21, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28323753/budget-impact-of-antiretroviral-therapy-in-a-french-clinic-cohort-anrs-gota
#8
Emmanuelle Papot, Roland Landman, Françoise Louni, Charlotte Charpentier, Gilles Peytavin, Agnès Certain, Clémence Fradet, Daniela Rojas Castro, Marie Preau, Cécile Goujard, Patrick Yeni, Yazdan Yazdanpanah
OBJECTIVES: In this study, we first assessed costs associated with the use of ART in an infectious diseases University Hospital Clinic, we secondly evaluated characteristics associated with these costs, and finally simulated the impact on the overall ART budget of switching 1- and 2-line regimens to less costly regimens (as effective and well-tolerated). DESIGN: Cohort analysis including PLHIV ≥ 18 years on ART to estimate ART costs during 2014. METHODS: This study was conducted in the Bichat-Claude Bernard University Hospital Clinic in Paris, France, where 4,501 PLHIV consulted in 2014...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28321215/ifn-%C3%AE-inhibits-drug-resistant-hiv-infection-of-macrophages
#9
Xu Wang, He Wang, Man-Qing Liu, Jie-Liang Li, Run-Hong Zhou, Yu Zhou, Yi-Zhong Wang, Wang Zhou, Wen-Zhe Ho
Type III interferons (IFN-λs) have been demonstrated to inhibit a number of viruses, including HIV. Here, we further examined the anti-HIV effect of IFN-λs in macrophages. We found that IFN-λs synergistically enhanced anti-HIV activity of antiretrovirals [azidothymidine (AZT), efavirenz, indinavir, and enfuvirtide] in infected macrophages. Importantly, IFN-λs could suppress HIV infection of macrophages with the drug-resistant strains, including AZT-resistant virus (A012) and reverse transcriptase inhibitor-resistant virus (TC49)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28301548/hiv-1-genetic-diversity-and-antiretroviral-drug-resistance-among-individuals-from-roraima-state-northern-brazil
#10
André de Lima Guerra Corado, Gonzalo Bello, Renato Augusto Carvalho Leão, Fabiana Granja, Felipe Gomes Naveca
The HIV-1 epidemic in Brazil has spread towards the Northern country region, but little is known about HIV-1 subtypes and prevalence of HIV strains with resistance mutations to antiretrovirals in some of the Northern states. HIV-1 protease (PR) and reverse transcriptase (RT) sequences were obtained from 73 treatment-naive and -experienced subjects followed between 2013 and 2014 at a public health reference unit from Roraima, the northernmost Brazilian state. The most prevalent HIV-1 clade observed in the study population was the subtype B (91%), followed by subtype C (9%)...
2017: PloS One
https://www.readbyqxmd.com/read/28301421/persistence-of-hiv-drug-resistance-among-south-african-children-given-nevirapine-to-prevent-mother-to-child-transmission
#11
Ruth Kanthula, Theresa Rossouw, Ute D Feucht, Gisela Van Dyk, Ingrid A Beck, Rachel Silverman, Scott Olson, Christen Salyer, Sharon Cassol, Lisa M Frenkel
OBJECTIVES: We set out to examine the prevalence and persistence of mutations conferring high-level nonnucleoside-reverse-transcriptase (NNRTI)-resistance in a cohort of HIV-infected children who had failed prophylaxis to prevent mother-to-child-transmission (PMTCT). DESIGN: A prospective observational cohort study at the Pediatric HIV Clinic at Kalafong Provincial Tertiary Hospital in Pretoria, South Africa. METHODS: Children referred for initiation of ART were enrolled from July 2010 through February 2013...
March 15, 2017: AIDS
https://www.readbyqxmd.com/read/28298145/genotypic-characterization-of-human-immunodeficiency-virus-type-1-derived-from-antiretroviral-drug-treated-individuals-residing-in-earthquake-affected-areas-in-nepal
#12
Bharat Singh Negi, Tomohiro Kotaki, Sunil Kumar Joshi, Anup Bastola, Minato Nakazawa, Masanori Kameoka
Molecular epidemiological data on human immunodeficiency virus type 1 (HIV-1) are limited in Nepal, and has not been available in areas affected by the April 2015 earthquake. Therefore, we conducted a genotypic study on HIV-1 genes derived from individuals on antiretroviral therapy residing in 14 districts in Nepal highly affected by the earthquake. HIV-1 genomic fragments were amplified from 40 blood samples of HIV treatment-failure individuals, and a sequencing analysis was performed on these genes. In the 40 samples, 29 protease, 32 reverse transcriptase, 25 gag and 21 env genes were sequenced...
March 16, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28291050/medication-sharing-is-rare-among-african-hiv-1-serodiscordant-couples-enrolled-in-an-efficacy-trial-of-oral-pre-exposure-prophylaxis-prep-for-hiv-1-prevention
#13
Kerry A Thomson, Jessica E Haberer, Mark Marzinke, Andrew Mujugira, Craig Hendrix, Connie Celum, Patrick Ndase, Alan Ronald, David R Bangsberg, Jared M Baeten
Sharing of pre-exposure prophylaxis (PrEP) medications is a concern for PrEP implementation. For HIV-1 serodiscordant couples, sharing may undermine HIV-1 prevention benefits and also cause antiretroviral resistance if taken by HIV-1 infected partners. Within a PrEP efficacy trial among HIV-1 serodiscordant couples, we assessed the occurrence of PrEP sharing by self-report and plasma tenofovir concentrations in HIV-1 infected partners. PrEP sharing was self-reported at <0.01% of visits and 0-1.6% of randomly selected and 0% of purposively selected specimens from HIV-1 infected participants had detectable tenofovir concentrations (median: 66...
March 10, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28288535/antiretroviral-therapy-in-hiv-infected-adolescents-clinical-and-pharmacologic-challenges
#14
Joanna Dobroszycki, Philip Lee, Dina L Romo, Michael G Rosenberg, Andrew Wiznia, Jacobo Abadi
With the currently available combined antiretroviral therapy regimens, durable suppression of viral replication, preservation of immune function and normalizing life expectancy, are all becoming achievable goals. Teenagers and young adults living with HIV present unique clinical and pharmacologic challenges to optimizing antiretroviral treatment outcomes. Areas covered: In this expert review of the topic, we examine recent clinical trial data and draw on our program's 25 year experience working with both perinatally and behaviorally HIV infected adolescents...
March 14, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28288014/the-times-they-are-a-changing-hope-for-hiv-to-hiv-organ-transplantation
#15
Ghady Haidar, Nina Singh
HIV-infected persons who achieve undetectable viral loads on antiretroviral therapy currently have near-normal lifespans. Liver disease is a major cause of non-AIDS-related deaths, and as a result of longer survival, the prevalence of end-stage renal disease in HIV is increasing. HIV-infected persons undergoing organ transplantation generally achieve comparable patient and graft survival rates compared to their HIV-uninfected counterparts, despite a nearly threefold increased risk of acute rejection. However, the ongoing shortage of suitable organs can limit transplantation as an option, and patients with HIV have higher waitlist mortality than others...
March 1, 2017: Transplantation
https://www.readbyqxmd.com/read/28285439/examination-of-the-role-of-religious-and-psychosocial-factors-in-hiv-medication-adherence-rates
#16
Safiya George Dalmida, Katryna McCoy, Harold G Koenig, Aretha Miller, Marcia McDonnell Holstad, Tami Thomas, Dora Clayton-Jones, Mary Grant, Terri Fleming, Menka Munira Wirani, George Mugoya
Optimal adherence to antiretroviral therapy (ART) is associated with favorable HIV outcomes, including higher CD4 cell counts, HIV virus suppression and a lower risk of HIV transmission. However, only 25% of people living with HIV/AIDS (PLWH) in the USA are virally suppressed. Sub-optimal adherence (<90-95%) contributes to antiretroviral resistance and worse medical outcomes, including more rapid progression to AIDS and death. Psychosocial factors and religion/spirituality (R/S) have a significant impact on ART adherence, but the findings are mixed...
March 11, 2017: Journal of Religion and Health
https://www.readbyqxmd.com/read/28279801/drug-resistance-related-mutations-t369v-i-in-the-connection-subdomain-of-hiv-1-reverse-transcriptase-severely-impair-viral-fitness
#17
Zheng Wang, Junli Zhang, Fan Li, Xiaolin Ji, Lingjie Liao, Liying Ma, Hui Xing, Yi Feng, Dan Li, Yiming Shao
Fitness is a key parameter in the measurement of transmission capacity of individual drug-resistant HIV. Drug-resistance related mutations (DRMs) T369V/I and A371V in the connection subdomain (CN) of reverse transcriptase (RT) occur at higher frequencies in the individuals experiencing antiretroviral therapy failure. Here, we evaluated the effects of T369V/I and A371V on viral fitness, in the presence or in the absence of thymidine analogue resistance-associated mutations (TAMs) and assessed the effect of potential RT structure-related mechanism on change in viral fitness...
March 6, 2017: Virus Research
https://www.readbyqxmd.com/read/28277148/adverse-effects-of-antiretroviral-therapy-on-liver-hepatocytes-and-endothelium-in-hiv-patients-an-ultrastructural-perspective
#18
Sarah Chwiki, Maria Mercedes Campos, Mary E McLaughlin, David E Kleiner, Joseph A Kovacs, Caryn G Morse, Mones S Abu-Asab
Human immunodeficiency virus and antiretroviral therapy (ART) together can be far more detrimental to liver cells than either of the two unaided. However, ultrastructural aspects of the synergistic effects of HIV and ART have been understudied. In a patient cohort receiving ART, this study characterizes ultrastructurally sinusoidal degeneration, hepatocytic aberrations, mitochondrial dysfunction, accumulation of bulky lipid droplets (steatosis), and occlusion of sinusoidal lumina. Mitochondrial dysfunction causes the accumulation of acetyl-CoA which leads to insulin upregulation and resistance, lipid synthesis, and steatosis...
March 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28275459/carbohydrate-lipid-bone-and-inflammatory-markers-in-hiv-positive-adolescents-on-antiretroviral-therapy-and-hormonal-contraception
#19
EDITORIAL
Nadia Kancheva Landolt, Torsak Bunupuradah, Jullapong Achalapong, Pope Kosalaraksa, Witaya Petdachai, Chaiwat Ngampiyaskul, Sasiwimol Ubolyam, Narukjaporn Thammajaruk, Stephen Kerr, Jintanat Ananworanich
BACKGROUND: Little is known about the cumulative effect of HIV antiretroviral therapy (ART) and hormonal contraception (HC) on metabolism and inflammation in HIV-positive women. METHODS: We conducted a cross-sectional assessment of markers for carbohydrate, lipid, bone metabolism, inflammation and coagulation in HIV-positive adolescents on ART and HC (n=37) versus on ART only (n=51) in Thailand. The Wilcoxon rank-sum test was used to assess differences between groups...
January 1, 2017: Journal of Virus Eradication
https://www.readbyqxmd.com/read/28272247/high-levels-of-virological-failure-with-major-genotypic-resistance-mutations-in-hiv-1-infected-children-after-5-years-of-care-according-to-who-recommended-1st-line-and-2nd-line-antiretroviral-regimens-in-the-central-african-republic-a-cross-sectional-study
#20
Christian Diamant Mossoro-Kpinde, Jean-Chrysostome Gody, Ralph-Sydney Mboumba Bouassa, Olivia Mbitikon, Mohammad-Ali Jenabian, Leman Robin, Mathieu Matta, Kamal Zeitouni, Jean De Dieu Longo, Cecilia Costiniuk, Gérard Grésenguet, Ndèye Coumba Touré Kane, Laurent Bélec
A large cohort of 220 HIV-1-infected children (median [range] age: 12 [4-17] years) was cared and followed up in the Central African Republic, including 198 in 1st-line and 22 in 2nd-line antiretroviral regimens. Patients were monitored clinically and biologically for HIV-1 RNA load and drug resistance mutations (DRMs) genotyping. A total of 87 (40%) study children were virological responders and 133 (60%) nonresponders. In children with detectable viral load, the majority (129; 97%) represented a virological failure...
March 2017: Medicine (Baltimore)
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