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Viral load monitoring

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https://www.readbyqxmd.com/read/29771783/hiv-1-drug-resistance-among-ugandan-adults-attending-an-urban-out-patient-clinic
#1
Amrei von Braun, Christine Sekaggya-Wiltshire, Nadine Bachmann, Deogratius Ssemwanga, Alexandra U Scherrer, Maria Nanyonjo, Anne Kapaata, Pontiano Kaleebu, Huldrych F Günthard, Barbara Castelnuovo, Jan Fehr, Andrew Kambugu
BACKGROUND: Little is known about prevalence of drug resistance among HIV-infected Ugandans, a setting with over 15 years of public-sector access to antiretroviral therapy (ART) and where virological monitoring was only recently introduced. SETTING: This study was conducted in the adults' out-patient clinic of the Infectious Diseases Institute, Kampala, Uganda. METHODS: HIV genotyping was performed in ART naïve patients and in treatment experienced patients on ART for ≥ six months with virological failure (≥1000 copies/mL)...
April 27, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29756148/understanding-the-viral-load-during-the-synthesis-and-after-rebinding-of-virus-imprinted-particles-via-real-time-quantitative-pcr
#2
M Gast, S Kühner, H Sobek, B Mizaikoff
In the present study, virus imprinted particles have been synthesized for recognizing and specifically binding viruses. These materials may be used for biomimetic sensing schemes and for selective removal of virus particles. Virus imprinting procedures require careful optimization of the synthesis route for obtaining selective and efficiently binding imprinted materials. A remaining limitation has been a facile method for the quantification of the viral load during the imprinting process. Herein, human adenovirus (AdV) was selected as a model virus facilitating the development and application of a rapid virus quantification method based on a molecular biological approach...
May 14, 2018: Analyst
https://www.readbyqxmd.com/read/29752639/prevalence-of-hiv-viral-load-suppression-among-psychiatric-inpatients-with-comorbid-substance-use-disorders
#3
D M Coviello, R Lovato, K Apostol, M M Eisenberg, D S Metzger, R Szucs-Reed, N Kiryankova-Dalseth, D Kelly, A Jackson, M Plano, M B Blank
A consistently suppressed viral load enables HIV (+) patients to live longer, healthier lives and reduces the probability of transmitting the virus. Since the prevalence of HIV is four times higher among those with psychiatric disorders than in the general population, it is likely that this group would also have greater difficulty remaining in care and achieving viral suppression. A secondary data analysis utilizing screening data from the Preventing AIDS Through Health (PATH) for Triples (PFT) Study were examined to assess HIV load suppression among 254 psychiatric inpatients with comorbid substance use disorders in Philadelphia...
May 11, 2018: Community Mental Health Journal
https://www.readbyqxmd.com/read/29750804/temporal-compartmental-changes-in-viral-rna-and-neuronal-injury-in-a-primate-model-of-neuroaids
#4
R Gilberto González, Robert Fell, Julian He, Jennifer Campbell, Tricia H Burdo, Patrick Autissier, Lakshmanan Annamalai, Faramarz Taheri, Termara Parker, Jeffrey D Lifson, Elkan F Halpern, Mark Vangel, Eliezer Masliah, Susan V Westmoreland, Kenneth C Williams, Eva-Maria Ratai
Despite the advent of highly active anti-retroviral therapy HIV-associated neurocognitive disorders (HAND) continue to be a significant problem. Furthermore, the precise pathogenesis of this neurodegeneration is still unclear. The objective of this study was to examine the relationship between infection by the simian immunodeficiency virus (SIV) and neuronal injury in the rhesus macaque using in vivo and postmortem sampling techniques. The effect of SIV infection in 23 adult rhesus macaques was investigated using an accelerated NeuroAIDS model...
2018: PloS One
https://www.readbyqxmd.com/read/29739459/sheng-jiang-san-a-traditional-multi-herb-formulation-exerts-anti-influenza-effects-in-vitro-and-in-vivo-via-neuraminidase-inhibition-and-immune-regulation
#5
Tianbo Zhang, Mengjie Xiao, Chun-Kwok Wong, Ka-Pun Chris Mok, Xin Zhao, Huihui Ti, Pang-Chui Shaw
BACKGROUND: Sheng Jiang San (SJS), a multi-herb formulation, is used in treating high fever, thirsty and anxiety in ancient China and it is sometimes used to treat seasonal influenza nowadays. However, there is no evidence-based investigation and mechanism research to support the anti-influenza efficacy of SJS. This study aims at evaluating the anti-influenza effect of SJS and investigating its possible mechanism. METHODS: The inhibitory effect of SJS against different influenza virus strains on MDCK cells was examined...
May 8, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29733750/delivery-of-alx-0171-by-inhalation-greatly-reduces-respiratory-syncytial-virus-disease-in-newborn-lambs
#6
Alejandro Larios Mora, Laurent Detalle, Jack M Gallup, Albert Van Geelen, Thomas Stohr, Linde Duprez, Mark R Ackermann
Respiratory syncytial virus (RSV) is a common cause of acute lower respiratory disease in infants and young children worldwide. Currently, treatment is supportive and no vaccines are available. The use of newborn lambs to model hRSV infection in human infants may provide a valuable tool to assess safety and efficacy of new antiviral drugs and vaccines. ALX-0171 is a trivalent Nanobody targeting the hRSV fusion (F) protein and its therapeutic potential was evaluated in newborn lambs infected with a human strain of RSV followed by daily ALX-0171 nebulization for 3 or 5 consecutive days...
May 7, 2018: MAbs
https://www.readbyqxmd.com/read/29731407/cardiovascular-disease-and-use-of-contemporary-protease-inhibitors-the-d-a-d-international-prospective-multicohort-study
#7
Lene Ryom, Jens D Lundgren, Wafaa El-Sadr, Peter Reiss, Ole Kirk, Matthew Law, Andrew Phillips, Rainer Weber, Eric Fontas, Antonella d' Arminio Monforte, Stéphane De Wit, Francois Dabis, Camilla I Hatleberg, Caroline Sabin, Amanda Mocroft
BACKGROUND: Although earlier protease inhibitors have been associated with increased risk of cardiovascular disease, whether this increased risk also applies to more contemporary protease inhibitors is unknown. We aimed to assess whether cumulative use of ritonavir-boosted atazanavir and ritonavir-boosted darunavir were associated with increased incidence of cardiovascular disease in people living with HIV. METHODS: The prospective Data Collection on Adverse Events of Anti-HIV Drugs (D:A:D) study consists of people living with HIV-1 from 11 cohorts in Australia, Europe, and the USA...
May 3, 2018: Lancet HIV
https://www.readbyqxmd.com/read/29727806/neoplasms-associated-deaths-in-hiv-1-infected-and-non-infected-patients-in-bahia-brazil
#8
Marinho Marques, Estela Luz, Mateus Leal, João Vitor Oliveira, Rejane Patrício, Eduardo Martins Netto, Carlos Brites
BACKGROUND: HIV-infected patients are at a higher risk to develop malignancies than general population. Although AIDS-related malignancies are a common feature of late-stage disease, patients under successful antiretroviral therapy also have an increased risk for development of non-AIDS malignancies. OBJECTIVE: To compare the frequency and characteristics of adults HIV-infected patients and general population who died of malignancies in Bahia, Brazil from January 2000 to December 2010...
May 1, 2018: Cancer Epidemiology
https://www.readbyqxmd.com/read/29709320/reactivation-of-hepatitis-b-virus-in-kidney-transplant-recipients-with-previous-clinically-resolved-infection-a-single-center-experience
#9
Catarina Meng, Carolina Belino, Luciano Pereira, Ana Pinho, Susana Sampaio, Isabel Tavares, Manuela Bustorff, António Sarmento, Manuel Pestana
BACKGROUND: Hepatitis B virus (HBV) reactivation in kidney transplant recipients (KTR) involves important morbidity and mortality. Despite being more common in patients who are HBsAg-positive, it may occur in patients with clinically resolved infection (HBsAg-negative and anti-HBc-positive), in whom the presence of the protective anti-HB antibody is thought to decrease the risk of reactivation. Data regarding reactivation rates in this population are scarce. OBJECTIVE: To retrospectively evaluate the risk of HBV reactivation in KTR with previously resolved infection...
April 27, 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29702563/hepatitis-c-in-pregnancy
#10
Pratima Dibba, Rosann Cholankeril, Andrew A Li, Meera Patel, Mariam Fayek, Christy Dibble, Nnenna Okpara, Autumn Hines, Aijaz Ahmed
The prevalence of hepatitis C in pregnancy is as high as 3.6% in large cohorts. The prevalence of hepatitis C acquired by vertical transmission is 0.2% to 0.4% in the United States and Europe. Although screening is not recommended in the absence of certain risk factors, the importance of understanding hepatitis C in pregnancy lies in its association with adverse maternal and neonatal outcomes. There is potential for those infants infected by vertical transmission to develop chronic hepatitis C, cirrhosis or hepatocellular carcinoma...
April 27, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29688415/hepatitis-b-virus-immunisation-and-neonatal-acquisition-of-persistent-infection-in-england-and-wales
#11
Shoshanna May, Sema Mandal, Philip Keel, Becky Haywood, Siew Lin Ngui, Mary Ramsay, Richard S Tedder, Samreen Ijaz
Background: It is believed that between 2 and 5% of infants born to HBV-infected mothers at a high risk of perinatal transmission will become persistently infected in spite of immunisation starting at birth. We investigated factors associated with breakthrough infections. Methods: Sixty nine samples from HBV-infected infants born between 2003 and 2015 were tested for HBV serological and molecular markers. Sequencing and epitope phenotyping were used to investigate alterations in HBsAg sequence and antigenicity in infants and in mothers known to have transmitted and not to have transmitted virus to their infants...
April 24, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29676212/pro-140-a-monoclonal-antibody-targeting-ccr5-as-a-long-acting-single-agent-maintenance-therapy-for-hiv-1-infection
#12
Kush Dhody, Nader Pourhassan, Kazem Kazempour, Derry Green, Shide Badri, Hana Mekonnen, Paul J Maddon, Denis Burger
Background PRO 140 is a humanized monoclonal antibody targeting CCR5 with potent antiviral activity in patients with CCR5-tropic HIV-1 infection. In phase 2b studies, we evaluated the long-term efficacy, safety, and tolerability of PRO 140 monotherapy in maintaining viral suppression for over 24 months in patients who were stable on combination antiretroviral therapy on entry into the trials. Methods and Results Forty-one adult patients, infected exclusively with CCR5-tropic HIV-1 with viral loads <50 copies/mL, were switched from daily oral combination ART regimens to weekly PRO 140 monotherapy for 12 weeks...
April 20, 2018: HIV Clinical Trials
https://www.readbyqxmd.com/read/29666167/a-flexible-mhc-class-i-multimer-loading-system-for-large-scale-detection-of-antigen-specific-t-cells
#13
Jolien J Luimstra, Malgorzata A Garstka, Marthe C J Roex, Anke Redeker, George M C Janssen, Peter A van Veelen, Ramon Arens, J H Frederik Falkenburg, Jacques Neefjes, Huib Ovaa
Adaptive immunity is initiated by T cell recognition of specific antigens presented by major histocompatibility complexes (MHCs). MHC multimer technology has been developed for the detection, isolation, and characterization of T cells in infection, autoimmunity, and cancer. Here, we present a simple, fast, flexible, and efficient method to generate many different MHC class I (MHC I) multimers in parallel using temperature-mediated peptide exchange. We designed conditional peptides for HLA-A*02:01 and H-2Kb that form stable peptide-MHC I complexes at low temperatures, but dissociate when exposed to a defined elevated temperature...
April 17, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29663435/monitoring-of-oral-cytomegalovirus-dna-shedding-for-the-prediction-of-viral-dnaemia-in-allogeneic-hematopoietic-stem-cell-transplant-recipients
#14
Tania Pascual, Carlos Solano, Ignacio Torres, Alberto Talaya, Estela Giménez, Víctor Vinuesa, José L Piñana, Juan C Hernández-Boluda, Ariadna Pérez, David Navarro
Preemptive antiviral therapy based on detecting cytomegalovirus (CMV) DNAemia above a preestablished threshold is the mainstay strategy for the prevention of CMV disease in allogeneic hematopoietic stem cell transplant (allo-HSCT) recipients; nevertheless, CMV DNAemia, even at low levels, may increase mortality. We investigated whether surveillance of saliva for the presence of CMV DNA may anticipate the occurrence of CMV DNAemia. This was a prospective observational study with 53 consecutively enrolled allo-HSCT recipients...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29643199/usefulness-of-kaposi-sarcoma-associated-herpesvirus-kshv-dna-viral-load-in-whole-blood-for-the-diagnosis-and-monitoring-of-kshv-associated-diseases
#15
Aude Jary, Valentin Leducq, Romain Palich, Adélie Gothland, Diane Descamps, Véronique Joly, Sidonie Lambert-Niclot, Corinne Amiel, Ana Canestri, Audrey Mirand, Elyanne Gault, Astrid Vabret, Marc-Antoine Valantin, Christine Katlama, Vincent Calvez, Nicolas Dupin, Jean-Philippe Spano, Anne-Geneviève Marcelin
Kaposi Sarcoma-Associated Herpesvirus (KSHV) is the etiologic agent of Kaposi's sarcoma (KS) but also in multicentric variant of Castleman disease (MCD) and primary effusion lymphoma (PEL), diseases occurring primarily in HIV-infected patients (1).….
April 11, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29629683/near-real-time-tracking-of-gaps-in-prevention-of-mother-to-child-transmission-of-hiv-in-three-districts-of-kwazulu-natal-province-south-africa
#16
F Moyo, A Haeri Mazanderani, S Bhardwaj, O B Mhlongo, T Kufa, K Ng'oma, B A Smith, G G Sherman
BACKGROUND: Identifying and addressing gaps in the prevention of mother-to-child transmission of HIV (PMTCT) is required if South Africa (SA) is to achieve targets for eliminating MTCT (eMTCT). Potential PMTCT gaps that increase MTCT risk include late maternal HIV diagnosis, lack of or delayed antiretroviral therapy (ART) during pregnancy and breastfeeding, and lack of effective prophylaxis for HIV-exposed infants. OBJECTIVES: To investigate, in near real time, PMTCT gaps among HIV-infected infants in three districts of KwaZulu-Natal Province, SA...
March 28, 2018: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/29628513/hot-news-impact-of-low-level-viremia-on-treatment-outcomes-during-art-is-it-time-to-revise-the-definition-of-virological-failure
#17
Eva Poveda, Manuel Crespo
The level of HIV-RNA in plasma (HIV viral load) is the main marker used to monitor the virological response to antiretroviral therapy (ART) in HIV-infected patients. The threshold used to define virological suppression has historically been dictated by the limits of detection of the commercial assays used to quantify the plasma viral load. Thus, as more sensitive assays have proliferated and become more widely available, the definition has shifted from < 400 cop/mL with the first generation assays, to < 50 cop/mL, to < 20 cop/mL currently...
January 2018: AIDS Reviews
https://www.readbyqxmd.com/read/29625843/role-of-genetic-variations-on-mhc-class-i-antigen-processing-genes-in-human-cancer-and-viral-mediated-diseases
#18
Valerio D'Alicandro, Paolo Romania, Ombretta Melaiu, Doriana Fruci
Cytotoxic T lymphocytes constantly monitor peptide-MHC class I complexes on the cell surface to eliminate transformed and virally infected cells expressing peptides derived from abnormal proteins. The generation of antigenic peptides and their loading on MHC class I molecules is a multistep process involving different molecules that constitute the so-called antigen processing and presentation machinery (APM). To avoid immune-mediated elimination, human tumors and pathogens have adopted different strategies including loss of MHC class I expression and dysregulation of APM genes and proteins...
April 3, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29623220/high-prevalence-of-hypertension-in-ethiopian-and-non-ethiopian-hiv-infected-adults
#19
Maya Korem, Tali Wallach, Michael Bursztyn, Shlomo Maayan, Karen Olshtain-Pops
Objectives: Prevalence of hypertension has not been studied in the Ethiopian HIV-infected population, which represents 60% of the patients in our AIDS unit. Our aim was to identify risk factors and characterize the prevalence of hypertension in the population monitored at our unit. Methods: A retrospective chart review categorized subjects according to their blood pressure levels. Hypertension prevalence was determined and stratified according to variables perceived to contribute to elevated blood pressure...
2018: International Journal of Hypertension
https://www.readbyqxmd.com/read/29622527/epic-allies-a-gamified-mobile-phone-app-to-improve-engagement-in-care-antiretroviral-uptake-and-adherence-among-young-men-who-have-sex-with-men-and-young-transgender-women-who-have-sex-with-men-protocol-for-a-randomized-controlled-trial
#20
Sara LeGrand, Kathryn E Muessig, Alyssa Platt, Karina Soni, Joseph R Egger, Nkechinyere Nwoko, Tobias McNulty, Lisa B Hightow-Weidman
BACKGROUND: In the United States, young men who have sex with men (YMSM) and transgender women who have sex with men (YTWSM) bear a disproportionate burden of prevalent and incident HIV infections. Once diagnosed, many YMSM and YTWSM struggle to engage in HIV care, adhere to antiretroviral therapy (ART), and achieve viral suppression. Computer-based interventions, including those focused on behavior change, are recognized as effective tools for engaging youth. OBJECTIVE: The purpose of the study described in this protocol is to evaluate the efficacy of Epic Allies, a theory-based mobile phone app that utilizes game mechanics and social networking features to improve engagement in HIV care, ART uptake, ART adherence, and viral suppression among HIV-positive YMSM and YTWSM...
April 5, 2018: JMIR Research Protocols
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