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https://www.readbyqxmd.com/read/28938050/markers-of-poor-adherence-among-adults-with-hiv-attending-themba-lethu-hiv-clinic-helen-joseph-hospital-johannesburg-south-africa
#1
Maria Nnambalirwa, Caroline Govathson, Denise Evans, Lynne McNamara, Mhairi Maskew, Peter Nyasulu
Background: To date, there is no consensus on ideal ways to measure antiretroviral treatment (ART) adherence in resource limited settings. This study aimed to identify markers of poor adherence to ART. Methods: Retrospective data of HIV-positive ART-naïve adults initiating standard first-line ART at Themba Lethu Clinic, Helen Joseph Hospital, Johannesburg, South Africa from April 2004 to December 2011 were analysed. Poisson regression models with robust error variance were used to assessed the following potential markers of poor adherence 'last self-reported adherence, missed clinic visits, mean corpuscular volume (MCV), CD4 count against definition of adherence, suppressed HIV viral load using traditional test metrics'...
December 1, 2016: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28936916/bayesian-quantile-regression-based-partially-linear-mixed-effects-joint-models-for-longitudinal-data-with-multiple-features
#2
Hanze Zhang, Yangxin Huang, Wei Wang, Henian Chen, Barbara Langland-Orban
In longitudinal AIDS studies, it is of interest to investigate the relationship between HIV viral load and CD4 cell counts, as well as the complicated time effect. Most of common models to analyze such complex longitudinal data are based on mean-regression, which fails to provide efficient estimates due to outliers and/or heavy tails. Quantile regression-based partially linear mixed-effects models, a special case of semiparametric models enjoying benefits of both parametric and nonparametric models, have the flexibility to monitor the viral dynamics nonparametrically and detect the varying CD4 effects parametrically at different quantiles of viral load...
January 1, 2017: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/28931406/validation-of-a-questionnaire-to-monitor-symptoms-in-hiv-infected-patients-during-hepatitis-c-treatment
#3
Edward R Cachay, Craig Ballard, Bradford Colwell, Francesca Torriani, Charles Hicks, Wm Christopher Mathews
BACKGROUND: Clinicians are incorporating patient-reported outcomes in the management of HIV-infected persons co-infected with hepatitis C virus (HCV), but there are no validated inventories to monitor symptoms of patients during HCV therapy. DESIGN: Five-year retrospective cohort analysis of persons living with HIV (PLWH) treated for HCV. METHODS: The HCV symptom-inventory (HCV-SI) was administered before, during, and after HCV treatment. Discriminant validity was assessed, separately, in mixed model linear regression of HCV-SI T-scores on treatment regimens (pegylated-interferon and ribavirin; pegylated-interferon, ribavirin, and telaprevir; and interferon-free antivirals); and side effect-related premature treatment discontinuation (SE-DC)...
September 20, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28931072/high-prevalence-of-non-dipping-blood-pressure-and-vascular-stiffness-in-hiv-infected-south-africans-on-antiretrovirals
#4
M S Borkum, J M Heckmann, K Manning, J A Dave, N S Levitt, B L Rayner, N Wearne
BACKGROUND: HIV-infected individuals are at increased risk of tissue inflammation and accelerated vascular aging ('inflamm-aging'). Abnormal diurnal blood pressure (BP) rhythms such as non-dipping may contribute to an increased risk of cardiovascular and cerebrovascular events in HIV infected individuals. However, little data exists on ambulatory blood pressure (ABP) and measures of vascular stiffness in the black African HIV infected population. METHODS: This is a cross-sectional analysis of otherwise well, HIV infected outpatients on ART for >5 years...
2017: PloS One
https://www.readbyqxmd.com/read/28924449/outcomes-after-sofosbuvir-containing-regimens-for-hepatitis-c-virus-in-patients-with-decompensated-cirrhosis-a-real-world-study
#5
Fanpu Ji, Wenjun Wang, Shuangsuo Dang, Shengbang Wang, Burong Li, Dan Bai, Wenxue Zhao, Hong Deng, Changyin Tian, Zongfang Li
BACKGROUND: Direct-acting antivirals have been used for decompensated cirrhotic patients with hepatitis C virus (HCV) infection. However, the benefits in Chinese patients with decompensated cirrhosis are unclear. METHODS: Thirty patients with HCV infection and decompensated cirrhosis were administered sofosbuvir-containing regimens at our hospital between April and December 2015. The efficacy and safety of the treatments was determined by sustained virological response at week 12 (SVR 12), change of liver function and adverse events...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28923622/enzyme-linked-immunospot-assay-as-a-complementary-method-to-assess-and-monitor-cytomegalovirus-infection-in-kidney-transplant-recipients-on-pre-emptive-antiviral-therapy-a-single-center-experience
#6
E Favi, R Santangelo, S Iesari, M Morandi, G E Marcovecchio, E M Trecarichi, M P Salerno, M Ferraresso, F Citterio, J Romagnoli
BACKGROUND: Cytomegalovirus (CMV) disease represents a major cause of post-transplantation morbidity and mortality. To estimate the risk of infection and monitor response to antiviral therapy, current guidelines suggest combination of viral load monitoring with direct assessment of CMV-specific immune response. We used enzyme-linked immunospot (ELISpot) for the evaluation of CMV-specific T-cell response in kidney transplant recipients with CMV viremia and investigated how information gained could help manage CMV infection...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28918411/combining-cd4-recovery-and-cd4-cd8-ratio-restoration-as-an-indicator-for-evaluating-the-outcome-of-continued-antiretroviral-therapy-an-observational-cohort-study
#7
Shui Shan Lee, Ngai Sze Wong, Bonnie Chun Kwan Wong, Ka Hing Wong, Kenny Chi Wai Chan
OBJECTIVES: Immune recovery following highly active antiretroviral therapy (HAART) is commonly assessed by the degree of CD4 reconstitution alone. In this study, we aimed to assess immune recovery by incorporating both CD4 count and CD4:CD8 ratio. DESIGN: Observational cohort study SETTING AND PARTICIPANTS: Clinical data from Chinese HIV-positive patients attending the largest HIV service in Hong Kong and who had been on HAART for ≥4 years were accessed. MAIN OUTCOME MEASURES: Optimal immune outcome was defined as a combination of a CD4 count ≥500/μL and a CD4:CD8 ratio ≥0...
September 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28915317/the-theoretical-reliability-of-pcr-based-fish-viral-diagnostic-methods-is-critically-affected-when-they-are-applied-to-fish-populations-with-low-prevalence-and-virus-loads
#8
C P Dopazo, P Moreno, J G Olveira, J J Borrego
AIMS: The reliability of PCR techniques is an important issue in viral diagnosis, and it is even crucial when they must be applied for detection of viruses in asymptomatic carriers. The problems will arise when the aim is to study fish wild populations, where the viral loads and prevalence values are extremely low. We have evaluated several PCR procedures employed by two laboratories for monitoring fish captured in several oceanographic campaigns performed in the Gulf of Cádiz. METHODS AND RESULTS: To evaluate the reliability of different diagnostics test used, we have re-analyzed fish samples that had been previously subjected to diagnosis for a surveillance of viruses performed in 2010-2011 in wild fish populations...
September 15, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28914169/development-of-an-algorithm-for-determination-of-the-likelihood-of-virological-failure-in-hiv-positive-adults-receiving-antiretroviral-therapy-in-decentralized-care
#9
Anton Reepalu, Taye Tolera Balcha, Sten Skogmar, Per-Erik Isberg, Patrik Medstrand, Per Björkman
BACKGROUND: Early identification of virological failure (VF) limits occurrence and spread of drug-resistant viruses in patients receiving antiretroviral treatment (ART). Viral load (VL) monitoring is therefore recommended, but capacities to comply with this are insufficient in many low-income countries. Clinical algorithms might identify persons at higher likelihood of VF to allocate VL resources. OBJECTIVES: We aimed to construct a VF algorithm (the Viral Load Testing Criteria; VLTC) and compare its performance to the 2013 WHO treatment failure criteria...
2017: Global Health Action
https://www.readbyqxmd.com/read/28906279/the-value-of-point-of-care-cd4-and-laboratory-viral-load-in-tailoring-antiretroviral-therapy-monitoring-strategies-to-resource-limitations
#10
Emily P Hyle, Ilesh V Jani, Katherine L Rosettie, Robin Wood, Benjamin Osher, Stephen Resch, Pamela P Pei, Paolo Maggiore, Kenneth A Freedberg, Trevor Peter, Robert A Parker, Rochelle P Walensky
OBJECTIVE: To examine the clinical and economic value of point-of-care CD4 (POC-CD4) or viral load monitoring compared with current practices in Mozambique, a country representative of the diverse resource limitations encountered by HIV treatment programs in sub-Saharan Africa. DESIGN/METHODS: We use the Cost-Effectiveness of Preventing AIDS Complications-International model to examine the clinical impact, cost (2014 US$), and incremental cost-effectiveness ratio [$/year of life saved (YLS)] of ART monitoring strategies in Mozambique...
September 24, 2017: AIDS
https://www.readbyqxmd.com/read/28904056/simultaneously-monitoring-immune-response-and-microbial-infections-during-pregnancy-through-plasma-cfrna-sequencing
#11
Wenying Pan, Thuy T M Ngo, Joan Camunas-Soler, Chun-Xiao Song, Mark Kowarsky, Yair J Blumenfeld, Ronald J Wong, Gary M Shaw, David K Stevenson, Stephen R Quake
BACKGROUND: Plasma cell-free RNA (cfRNA) encompasses a broad spectrum of RNA species that can be derived from both human cells and microbes. Because cfRNA is fragmented and of low concentration, it has been challenging to profile its transcriptome using standard RNA-seq methods. METHODS: We assessed several recently developed RNA-seq methods on cfRNA samples. We then analyzed the dynamic changes of both the human transcriptome and the microbiome of plasma during pregnancy from 60 women...
September 13, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28901908/performance-of-point-of-care-xpert-hiv-1-plasma-viral-load-assay-at-a-tertiary-hiv-care-centre-in-southern-india
#12
Chinnambedu Ravichandran Swathirajan, Ramachandran Vignesh, Jayaseelan Boobalan, Sunil Suhas Solomon, Shanmugam Saravanan, Pachamuthu Balakrishnan
BACKGROUND: Sustainable suppression of HIV replication forms the basis of anti-retroviral therapy (ART) medication. Thus, reliable quantification of HIV viral load has become an essential factor to monitor the effectiveness of the ART. Longer turnaround-time (TAT), batch testing and technical skills are major drawbacks of standard real-time PCR assays. METHODS: The performance of the point-of-care Xpert HIV-1 viral load assay was evaluated against the Abbott RealTime PCR m2000rt system...
September 13, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28899102/community-based-antiretroviral-treatment-in-rural-zimbabwe
#13
Benjamin Chimukangara, Justen Manasa, Rebecca Mitchell, Georgina Nyabadza, David Katzenstein, Collen Masimirembwa
INTRODUCTION: Treatment of HIV has reduced HIV/AIDS-related mortality. Sustaining >90% virologic suppression in sub-Saharan Africa requires decentralized care and prevention services to rural communities. In Zimbabwe, the number of people receiving ART has increased rapidly. However, access to treatment monitoring tools such as viral load and drug resistance testing is limited. We assessed virologic treatment outcomes among ART recipients in Nyamutora, a rural community receiving bimonthly ART and prevention services...
September 13, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28892764/a-european-multicientre-study-on-the-comparison-of-hbv-viral-loads-between-veris-hbv-assay-and-roche-cobas-%C3%A2-taqman-%C3%A2-hbv-test-abbott-realtime-hbv-assay-siemens-versant-hbv-assay-and-qiagen-artus-hbv-rg-kit
#14
Patrick Braun, Rafael Delgado, Monica Drago, Diana Fanti, Hervé Fleury, Jacques Izopet, Alessandra Lombardi, MaAngeles Marcos, Karine Sauné, Siobhan O'Shea, Alfredo Pérez-Rivilla, John Ramble, Pascale Trimoulet, Jordi Vila, Duncan Whittaker, Alain Artus, Daniel Rhodes
BACKGROUND: Hepatitis B viral load testing is essential to treatment and monitoring decisions in patients with chronic Hepatitis B. Beckman Coulter has developed the VERIS HBV Assay (Veris) for use on the fully automated DxN VERIS Molecular Diagnostics System.(1) OBJECTIVES: To evaluate the clinical performance of the Veris HBV Assay at multiple EU laboratories STUDY DESIGN: Method comparison was performed with a total of 344 plasma specimens from HBV infected patients tested with Veris and COBAS(®) TaqMan(®) HBV Test (Cobas), 207 specimens tested with Veris and RealTime HBV Assay (RealTime), 86 specimens tested with Veris and VERSANT(®) HBV Assay (Versant), and 74 specimens tested with Veris and artus(®) HBV RG PCR kit (artus)...
September 8, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28891717/longitudinal-viral-suppression-among-a-cohort-of-adolescents-and-young-adults-with-behaviorally-acquired-human-immunodeficiency-virus
#15
Sarah M Wood, Elizabeth Lowenthal, Susan Lee, Sarah J Ratcliffe, Nadia Dowshen
Youth living with HIV (YLWH) are less likely than older adults to achieve and sustain viral suppression. While treatment guidelines recommend decreased viral load (VL) monitoring in individuals with well-controlled HIV, the appropriateness of this strategy for adolescents is unknown. We conducted a retrospective cohort study to describe longitudinal viral suppression and identify incidence of, and risk factors for, virologic failure among YLWH at a US adolescent HIV clinic from 2002 to 2015. We utilized Cox proportional hazards modeling to compare hazard ratios (HRs) for virologic failure stratified by baseline characteristics...
September 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28889969/andrographolide-inhibits-influenza-a-virus-induced-inflammation-in-a-murine-model-through-nf-%C3%AE%C2%BAb-and-jak-stat-signaling-pathway
#16
Yi Ding, Lizhu Chen, Wenjiao Wu, Jie Yang, Zifeng Yang, Shuwen Liu
Influenza viruses, the main cause of respiratory tract diseases, cause high morbidity and mortality in humans. Excessive inflammation in the lungs is proposed to be a hallmark for the severe influenza virus infection, especially influenza A virus infection. Strategies against inflammation induced by influenza A virus infection could be a potential anti-influenza therapy. Here, lethal dose of mouse-adapted H1N1 strain PR8A/PR/8/34 was inoculated C57BL/6 mice to detect the anti-influenza activity of andrographolide, the active component of traditional Chinese medicinal herb Andrographis paniculata, with or without influenza virus entry inhibitor CL-385319...
September 7, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28881311/simultaneous-determination-of-tenofovir-alafenamide-and-its-active-metabolites-tenofovir-and-tenofovir-diphosphate-in-hbv-infected-hepatocyte-with-a-sensitive-lc-ms-ms-method
#17
Bingchen Ouyang, Fang Zhou, Le Zhen, Ying Peng, Jianguo Sun, Qianying Chen, Xiaoliang Jin, Guangji Wang, Jingwei Zhang
Tenofovir (TFV), a first-line anti-viral agent, has been prepared as various forms of prodrugs for better bioavailability, lower systemic exposure and higher target cells loading of TFV to enhance efficacy and reduce toxicity. TFV undergoes intracellular phosphorylation to form TFV diphosphate (TFV-DP) in target cell to inhibit viral DNA replication. Hence, TFV-DP is the key active metabolite that exhibits anti-virus activity, its intracellular exposure and half-life determine the final activity. Therefore, simultaneous monitoring prodrug, TFV and TFV-DP in target cells will comprehensively evaluate TFV prodrugs, both considering the stability of ester prodrug, and the intracellular exposure of TFV-DP...
August 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28872277/misdiagnosed-hiv-infection-in-pregnant-women-initiating-universal-art-in-south-africa
#18
Nei-Yuan Hsiao, Allison Zerbe, Tamsin K Phillips, Landon Myer, Elaine J Abrams
INTRODUCTION: Rapid diagnostic tests (RDTs) are the primary diagnostic tools for HIV used in resource-constrained settings. Without a proper confirmation algorithm, there is concern that false-positive (FP) RDTs could result in misdiagnosis of HIV infection and inappropriate antiretroviral treatment (ART) initiation, but programmatic data on FP are few. METHODS: We examined the accuracy of RDT diagnosis among HIV-infected pregnant women attending public sector antenatal services in Cape Town, South Africa...
August 29, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28866636/transient-aortitis-documented-by-positron-emission-tomography-in-a-case-series-of-men-and-transgender-women-infected-with-syphilis
#19
Dvora Joseph Davey, Noah Kojima, Kelika A Konda, Pawan Gupta, Segundo R Leon, Gino M Calvo, Carlos F Caceres, Jeffrey D Klausner
OBJECTIVES: Syphilis infection persists globally contributing to preventable and treatable morbidity and mortality. How extensive early syphilis disseminates is unknown. To better understand the relationship between early syphilis infection and inflammation over time, our study enrolled six individuals recently infected with syphilis for sequential positron emission tomography (PET) scans. METHODS: We evaluated a case series of six individuals with high syphilis titres (two secondary, two early latent and two latent, unknown duration, but with high titre) who received sequential PET scans to assess inflammation over time and its response to treatment...
September 2, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28865390/association-between-public-injecting-and-drug-related-harm-among-hiv-positive-people-who-use-injection-drugs-in-a-canadian-setting-a-longitudinal-analysis
#20
Sarah Ickowicz, Evan Wood, Huiru Dong, Paul Nguyen, Will Small, Thomas Kerr, Julio S G Montaner, M-J Milloy
BACKGROUND: and Aims Injecting illicit drugs in public settings has been linked to a higher risk of a range of drug-related harms, including overdose and HIV infection. However, the factors associated with public injecting among HIV-positive individuals have not been previously explored. We investigated the links between public drug injecting, drug-related harm, and HIV treatment measures among a cohort of HIV-positive persons who inject drugs (PWID) in a Canadian setting. METHODS: We used data from a prospective cohort of HIV-positive PWID recruited from community settings in Vancouver, Canada, linked to comprehensive clinical monitoring data in the context of an ongoing Treatment-as-Prevention (TasP) initiative to examine harms associated with public injecting...
August 10, 2017: Drug and Alcohol Dependence
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