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https://www.readbyqxmd.com/read/29775812/virus-entry-and-its-inhibition-to-prevent-and-treat-hepatitis-b-and-hepatitis-d-virus-infections
#1
REVIEW
Thomas Tu, Stephan Urban
While chronic infection with the human hepatitis B virus (HBV) and hepatitis delta virus (HDV) inflict major health burdens worldwide, current therapies cannot cure patients. One possible novel approach is blocking virus entry to prevent the establishment of infection in naïve hepatocytes. As HBV and HDV use identical viral envelope proteins and the same entry mechanisms, such a strategy would target both viruses. Entry inhibitors (e.g. neutralizing antibodies) have been relegated to the limited role of prophylaxis...
May 15, 2018: Current Opinion in Virology
https://www.readbyqxmd.com/read/29775399/dolutegravir-and-rilpivirine-for-the-maintenance-treatment-of-virologically-suppressed-hiv-1-infection
#2
Jose L Casado, Marta Monsalvo, Aurora M Rojo, María Fontecha, Miguel A Rodriguez-Sagrado
Triple combinations of antiretroviral (ART) drugs are the standard treatment for HIV infection, but the challenges include long-term side effects, high costs, and adherence. The recent advent of potent and well tolerated ART has renewed the interest for newer ART strategies. A dual regimen with the combination of dolutegravir (DTG) and rilpivirine (RPV), two well tolerated, metabolic-friendly, and potent drugs could offer additional benefits. Areas covered: A review of recent randomized trials and observational cohorts concerning the use of a dual therapy with DTG plus RPV as a switching strategy in patients with viral suppression...
May 18, 2018: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/29774608/virion-like-membrane-breaking-nanoparticles-with-tumor-activated-cell-and-tissue-dual-penetration-conquer-impermeable-cancer
#3
Xiao Zhang, Xianghui Xu, Yachao Li, Cheng Hu, Zhijun Zhang, Zhongwei Gu
Poor drug penetration into tumor cells and tissues is a worldwide difficulty in cancer therapy. A strategy is developed for virion-like membrane-breaking nanoparticles (MBNs) to smoothly accomplish tumor-activated cell-and-tissue dual-penetration for surmounting impermeable drug-resistant cancer. Tailor-made dendritic arginine-rich peptide prodrugs are designed to mimic viral protein transduction domains and globular protein architectures. Attractively, these protein mimics self-assemble into virion-like nanoparticles in aqueous solution, having highly ordered secondary structure...
May 17, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29774053/postherpes-simplex-encephalitis-a-case-series-of-viral-triggered-autoimmunity-synaptic-autoantibodies-and-response-to-therapy
#4
Harry Alexopoulos, Sofia Akrivou, Sotiria Mastroyanni, Maria Antonopoulou, Argirios Dinopoulos, Melpo Giorgi, Kostas Konstantinou, Evangelos Kouremenos, Maria Lariou, Dimitrios Naoumis, Efterpi Pavlidou, Evaggelos Pavlou, Konstantinos Voudris, Panayotis Vlachoyiannopoulos, Marinos C Dalakas
Background: Recent evidence suggests that patients with herpes simplex virus (HSV) encephalitis may relapse because of autoimmunity against the N-methyl-D-aspartate receptor (NMDAR). We present a case series of post-HSV relapsing encephalopathy associated with antibodies to central nervous system (CNS) synaptic antigens. Patient/Methods: Sera and cerebrospinal fluid (CSF) from five patients with HSV encephalitis who relapsed after antiviral therapy were tested for anti-NMDAR, gamma-aminobutyric acid b receptor (GABAbR), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR), Leucine-rich, glioma inactivated 1 (LGI1), anti -contactin-associated protein-like 2 (CASPR2) and dipeptidyl-peptidase-like protein-6 (DDPX) antibodies using cell-based assays...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29773661/phase-i-study-of-oncolytic-vaccinia-virus-gl-onc1-in-patients-with-peritoneal-carcinomatosis
#5
Ulrich M Lauer, Martina Schell, Julia Beil, Susanne Berchtold, Ursula Koppenhöfer, Jörg Glatzle, Alfred Königsrainer, Robert Möhle, Dominik Nann, Falko Fend, Christina Pfannenberg, Michael Bitzer, Nisar P Malek
OBJECTIVE: Peritoneal carcinomatosis (PC) is common in advanced tumor stages or disease recurrence arising from gastrointestinal cancers, gynecologic malignancies, or primary peritoneal carcinoma. Since current therapies are mostly ineffective, new thera-peutic approaches are needed. Here, we report on a phase I study designed to assess safety, MTD, and anti-tumor activity of intra-peri-toneal (i.p.) administration of oncolytic vaccinia virus GL-ONC1 in advanced stage PC patients. DESIGN: GL-ONC1 was administered i...
May 17, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29773440/case-report-identification-of-recombinant-hcv-genotype-1b-2b-by-viral-sequencing-in-two-patients-with-treatment-failure-who-responded-to-re-treatment-with-sofosbuvir-and-daclatasvir
#6
Luis Antonio Uribe-Noguez, Alicia Ocaña-Mondragón, José Antonio Mata-Marín, Allison Cázares-Cortázar, Rosa María Ribas-Aparicio, María Elena Gómez-Torres, Jesus Gaytán-Martínez, María de la Luz Martínez-Rodríguez
Hepatitis C virus (HCV) infection is a global health problem. HCV has been classified into seven genotypes and >67 subtypes. Genotyping is necessary to enable selection of appropriate treatments. The commercial molecular techniques currently used do not identify some HCV subtypes, mixed infections and recombinant forms. In this study, the core-E1 and NS5B regions were sequenced and phylogenetically analysed to identify infections by HCV recombinant genotype 1b-2b in two patients who had initially been diagnosed with HCV genotype 2 infection by reverse hybridization with a Versant HCV Genotype 2...
May 15, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29773081/long-term-familial-mediterranean-fever-remission-on-successful-hepatitis-c-virus-treatment-in-a-patient-not-responding-to-colchicine-a-case-report
#7
Manik Gemilyan, Gagik Hakobyan, Susanna Ananyan
BACKGROUND: Familial Mediterranean fever is an autosomal recessive disorder characterized by periodic febrile attacks of aseptic serositis and/or arthritis. The main treatment is colchicine which prevents attacks in the majority of patients except for a group of colchicine-resistant cases. Chronic hepatitis C is a viral infection causing chronic inflammation of liver tissue (hepatitis) which ultimately progresses to fibrosis and liver cirrhosis with a high chance of hepatocellular carcinoma...
May 18, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29772762/paradoxical-effect-of-chloroquine-treatment-in-enhancing-chikungunya-virus-infection
#8
Pierre Roques, Simon-Djamel Thiberville, Laurence Dupuis-Maguiraga, Fok-Moon Lum, Karine Labadie, Frédéric Martinon, Gabriel Gras, Pierre Lebon, Lisa F P Ng, Xavier de Lamballerie, Roger Le Grand
Since 2005, Chikungunya virus (CHIKV) re-emerged and caused numerous outbreaks in the world, and finally, was introduced into the Americas in 2013. The lack of CHIKV-specific therapies has led to the use of non-specific drugs. Chloroquine, which is commonly used to treat febrile illnesses in the tropics, has been shown to inhibit CHIKV replication in vitro. To assess the in vivo effect of chloroquine, two complementary studies were performed: (i) a prophylactic study in a non-human primate model (NHP); and (ii) a curative study "CuraChik", which was performed during the Reunion Island outbreak in 2006 in a human cohort...
May 17, 2018: Viruses
https://www.readbyqxmd.com/read/29772748/drug-delivery-strategies-for-antivirals-against-hepatitis-b-virus
#9
REVIEW
Latavia Singh, Sunaina Indermun, Mershen Govender, Pradeep Kumar, Lisa C du Toit, Yahya E Choonara, Viness Pillay
Chronic hepatitis B virus (HBV) infection poses a significant health challenge due to associated morbidity and mortality from cirrhosis and hepatocellular cancer that eventually results in the breakdown of liver functionality. Nanotechnology has the potential to play a pivotal role in reducing viral load levels and drug-resistant HBV through drug targeting, thus reducing the rate of evolution of the disease. Apart from tissue targeting, intracellular delivery of a wide range of drugs is necessary to exert a therapeutic action in the affected organelles...
May 17, 2018: Viruses
https://www.readbyqxmd.com/read/29772664/the-cholinergic-anti-inflammatory-response-and-the-role-of-macrophages-in-hiv-induced-inflammation
#10
REVIEW
Manuel Delgado-Vélez, José A Lasalde-Dominicci
Macrophages are phagocytic immune cells that protect the body from foreign invaders and actively support the immune response by releasing anti- and proinflammatory cytokines. A seminal finding revolutionized the way macrophages are seen. The expression of the neuronal alpha7 nicotinic acetylcholine receptor (α7-nAChR) in macrophages led to the establishment of the cholinergic anti-inflammatory response (CAR) in which the activation of this receptor inactivates macrophage production of proinflammatory cytokines...
May 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29771862/efficacy-and-safety-of-direct-acting-antiviral-therapy-for-chronic-hepatitis-c-in-thalassemic-children
#11
Shivadatta Padhi, Sudhir Maharshi, Gaurav K Gupta, Kapil Garg, Sandeep Nijhawan
OBJECTIVES: There is limited data on the efficacy and safety of directly acting antiviral therapy (DAA) for chronic hepatitis C in pediatric population. The aim was to assess the efficacy and safety of DAA in chronic hepatitis C β-thalassemic major pediatric patients. METHODS: Prospective study was conducted from September 2015 to January 2017. All β-thalassemic major chronic hepatitis C pediatric patients with age between 5 and 14 years were included in this study...
May 16, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29771783/hiv-1-drug-resistance-among-ugandan-adults-attending-an-urban-out-patient-clinic
#12
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/29771296/nationwide-cohort-study-of-antiretroviral-therapy-timing-treatment-dropout-and-virological-failure-in-china-2011-2015
#13
Yan Zhao, Zunyou Wu, Jennifer M McGoogan, Yiyi Sha, Decai Zhao, Ye Ma, Ron Brookmeyer, Roger Detels, Julio S G Montaner
Background: People living with HIV (PLWH) are still being diagnosed late, rendering the benefits of "early" antiretroviral therapy (ART; based on CD4 count) unattainable. Therefore, we aimed to evaluate the benefits of "immediate" ART (based on the time interval between diagnosis and treatment, regardless of CD4 count). Methods: A nationwide cohort of PLWH in China who initiated ART January 1, 2011 to December 31, 2014 and had baseline CD4 results >200 cells/μL were censored at 12 months, dropout, or death, whichever was first...
May 16, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29771270/effect-of-conversion-from-calcineurin-inhibitors-to-everolimus-on-hepatitis-c-viremia-in-adult-kidney-transplant-recipients
#14
Larissa Sgaria Pacheco, Valter Duro Garcia, Ronivan Luis Dal Prá, Bruna Doleys Cardoso, Mariana Ferras Rodrigues, Helen Kris Zanetti, Gisele Meinerz, Jorge Neumann, Diego Gnatta, Elizete Keitel
INTRODUCTION: Currently, there is no specific immunosuppressive protocol for hepatitis C (HCV)-positive renal transplants recipients. Thus, the aim of this study was to evaluate the conversion effect to everolimus (EVR) on HCV in adult kidney recipients. METHOD: This is an exploratory single-center, prospective, randomized, open label controlled trial with renal allograft recipients with HCV-positive serology. Participants were randomized for conversion to EVR or maintenance of calcineurin inhibitors...
May 14, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29771268/hiv-disease-is-associated-with-increased-biomarkers-of-endothelial-dysfunction-despite-viral-suppression-on-long-term-antiretroviral-therapy-in-botswana
#15
Mosepele Mosepele, Terence Mohammed, Lucy Mupfumi, Sikhulile Moyo, Kara Bennett, Shahin Lockman, Linda C Hemphill, Virginia A Triant
BACKGROUND: Untreated HIV infection is associated with increased biomarkers of endothelial dysfunction. However, the predictors and degree of endothelial dysfunction among virally suppressed HIV-infected adults on long-term antiretroviral therapy (ART) have not been well studied in sub-Saharan Africa (SSA). METHODS: We enrolled 112 HIV-infected adults with virological suppression on long-term ART and 84 HIV-uninfected controls in Botswana. We measured plasma levels of markers of endothelial injury [soluble vascular adhesion molecule 1 (VCAM-1), intercellular adhesion molecule 1 (ICAM-1) and E-selectin] and plasma levels of biomarkers of inflammation [interleukin 6 (IL-6)] and monocyte activation (sCD163)...
May 14, 2018: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29770863/siv-latency-in-macrophages-in-the-cns
#16
Lucio Gama, Celina Abreu, Erin N Shirk, Suzanne E Queen, Sarah E Beck, Kelly A Metcalf Pate, Brandon T Bullock, M Christine Zink, Joseph L Mankowski, Janice E Clements
Lentiviruses infect myeloid cells, leading to acute infection followed by persistent/latent infections not cleared by the host immune system. HIV and SIV are lentiviruses that infect CD4+ lymphocytes in addition to myeloid cells in blood and tissues. HIV infection of myeloid cells in brain, lung, and heart causes tissue-specific diseases that are mostly observed during severe immunosuppression, when the number of circulating CD4+ T cells declines to exceeding low levels. Antiretroviral therapy (ART) controls viral replication but does not successfully eliminate latent virus, which leads to viral rebound once ART is interrupted...
May 17, 2018: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/29770748/the-effect-of-switching-protease-inhibitors-to-raltegravir-on-endothelial-function-in-hiv-infected-patients
#17
Maaike Krikke, Kiki Tesselaar, Guido E L van den Berk, Sigrid A Otto, Laura H Freriks, Steven F L van Lelyveld, Frank J L Visseren, Andy I M Hoepelman, Joop E Arends
Objective Lipid management is one of the cornerstones of cardiovascular risk reduction. Treatment of HIV infection with protease inhibitors (PIs) may cause dyslipidaemia, whilst the integrase inhibitor raltegravir (RAL) has a relatively favorable effect on plasma lipids. We examined the effect of switching from PIs to RAL on endothelial function, and its effect on immunological and inflammatory parameters. Methods We performed a 16-week open-label prospective crossover study: 8 weeks intervention (switch PIs to RAL) and 8 weeks control (unchanged cART regimen)...
April 2018: HIV Clinical Trials
https://www.readbyqxmd.com/read/29770747/cd16-expressing-monocytes-correlate-with-arterial-stiffness-in-hiv-infected-art-na%C3%A3-ve-men
#18
Ling Luo, Yang Han, Xiaojing Song, Ting Zhu, Yong Zeng, Taisheng Li
Objectives To determine the association of the markers of monocyte activation and arterial stiffness among HIV-infected antiretroviral therapy (ART)-naïve men. Methods Sixty HIV-infected ART-naïve men and 20 HIV-uninfected male controls without symptoms or history of cardiovascular disease were recruited. Pulse wave velocity (PWV) were used as the marker of arterial stiffness and determined using a pulse pressure analyzer. The percentage of CD16-expressing monocytes was used as a marker of monocyte activation...
April 2018: HIV Clinical Trials
https://www.readbyqxmd.com/read/29770355/host-regulated-hepatitis-b-virus-capsid-assembly-in-a-mammalian-cell-free-system
#19
Kuancheng Liu, Jianming Hu
The hepatitis B virus (HBV) is an important global human pathogen and represents a major cause of hepatitis, liver cirrhosis and liver cancer. The HBV capsid is composed of multiple copies of a single viral protein, the capsid or core protein (HBc), plays multiple roles in the viral life cycle, and has emerged recently as a major target for developing antiviral therapies against HBV infection. Although several systems have been developed to study HBV capsid assembly, including heterologous overexpression systems like bacteria and insect cells, in vitro assembly using purified protein, and mammalian cell culture systems, the requirement for non-physiological concentrations of HBc and salts and the difficulty in manipulating host regulators of assembly presents major limitations for detailed studies on capsid assembly under physiologically relevant conditions...
April 20, 2018: Bio-protocol
https://www.readbyqxmd.com/read/29770269/ten-years-of-progress-and-promise-of-induced-pluripotent-stem-cells-historical-origins-characteristics-mechanisms-limitations-and-potential-applications
#20
Adekunle Ebenezer Omole, Adegbenro Omotuyi John Fakoya
The discovery of induced pluripotent stem cells (iPSCs) by Shinya Yamanaka in 2006 was heralded as a major breakthrough of the decade in stem cell research. The ability to reprogram human somatic cells to a pluripotent embryonic stem cell-like state through the ectopic expression of a combination of embryonic transcription factors was greeted with great excitement by scientists and bioethicists. The reprogramming technology offers the opportunity to generate patient-specific stem cells for modeling human diseases, drug development and screening, and individualized regenerative cell therapy...
2018: PeerJ
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