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https://www.readbyqxmd.com/read/28813016/a-novel-high-mannose-specific-lectin-from-the-green-alga-halimeda-renschii-exhibits-a-potent-anti-influenza-virus-activity-through-high-affinity-binding-to-the-viral-hemagglutinin
#1
Jinmin Mu, Makoto Hirayama, Yuichiro Sato, Kinjiro Morimoto, Kanji Hori
We have isolated a novel lectin, named HRL40 from the green alga Halimeda renschii. In hemagglutination-inhibition test and oligosaccharide-binding experiment with 29 pyridylaminated oligosaccharides, HRL40 exhibited a strict binding specificity for high-mannose N-glycans having an exposed (α1-3) mannose residue in the D2 arm of branched mannosides, and did not have an affinity for monosaccharides and other oligosaccharides examined, including complex N-glycans, an N-glycan core pentasaccharide, and oligosaccharides from glycolipids...
August 16, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28812869/entry-inhibitors-a-perspective-for-prevention-of-hepatitis-c-virus-infection-in-organ-transplantation
#2
Che C Colpitts, Raymond T Chung, Thomas F Baumert
Entry inhibitors are emerging as an attractive class of therapeutics for hepatitis C virus (HCV) infection. Entry inhibitors target either virion-associated factors or cellular factors necessary for infection. By blocking entry into cells, entry inhibitors prevent both the establishment of persistent reservoirs and the emergence of resistant variants during viral replication. Furthermore, entry inhibitors protect naïve cells from virus-induced alterations. Combining entry inhibitors with direct-acting antivirals (DAAs) may therefore improve treatment outcomes, particularly in the context of organ transplantation...
August 16, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28812250/miv-150-and-zinc-acetate-combination-provides-potent-and-broad-activity-against-hiv-1
#3
Olga Mizenina, Mayla Hsu, Ninochka Jean-Pierre, Meropi Aravantinou, Keith Levendosky, Gabriela Paglini, Thomas M Zydowsky, Melissa Robbiani, José A Fernández-Romero
We previously showed that the combination of the non-nucleoside reverse transcriptase inhibitor (NNRTI) MIV-150 with zinc acetate (ZA) formulated in a carrageenan (CG; MZC) gel provided macaques significant protection against vaginal simian-human immunodeficiency virus-RT (SHIV-RT) challenge, better than either MIV-150/CG or ZA/CG. The MZC gel was shown to be safe in a phase 1 clinical trial. Herein, we used in vitro approaches to study the antiviral properties of ZA and the MIV-150/ZA combination, compared to other NNRTIs...
August 15, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28811756/pseudomonas-oleovorans-strain-kbpf-004-culture-supernatants-reduced-seed-transmission-of-cucumber-green-mottle-mosaic-virus-and-pepper-mild-mottle-virus-and-remodeled-aggregation-of-126-kda-and-subcellular-localization-of-movement-protein-of-pepper-mild-mottle
#4
Nam-Gyu Kim, Eun-Young Seo, Sang-Hyuk Han, Jun-Su Gong, Cheol-Nam Park, Ho-Seop Park, Leslie L Domier, John Hammond, Hyoun-Sub Lim
Efforts to control viral diseases in crop production include several types of physical or chemical treatments; antiviral extracts of a number of plants have also been examined to inhibit plant viral infection. However, treatments utilizing naturally selected microorganisms with activity against plant viruses are poorly documented. Here we report isolation of a soil inhabiting bacterium, Pseudomonas oleovorans strain KBPF-004 (developmental code KNF2016) which showed antiviral activity against mechanical transmission of tobamoviruses...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811706/therapeutic-potential-of-flavonoids-in-inflammatory-bowel-disease-a-comprehensive-review
#5
REVIEW
Ali Salaritabar, Behrad Darvishi, Farzaneh Hadjiakhoondi, Azadeh Manayi, Antoni Sureda, Seyed Fazel Nabavi, Leo R Fitzpatrick, Seyed Mohammad Nabavi, Anupam Bishayee
The inflammatory process plays a central role in the development and progression of numerous pathological situations, such as inflammatory bowel disease (IBD), autoimmune and neurodegenerative diseases, metabolic syndrome, and cardiovascular disorders. IBDs involve inflammation of the gastrointestinal area and mainly comprise Crohn's disease (CD) and ulcerative colitis (UC). Both pathological situations usually involve recurring or bloody diarrhea, pain, fatigue and weight loss. There is at present no pharmacological cure for CD or UC...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811654/characterization-of-the-mollusc-rig-i-mavs-pathway-reveals-an-archaic-antiviral-signalling-framework-in-invertebrates
#6
Baoyu Huang, Linlin Zhang, Yishuai Du, Fei Xu, Li Li, Guofan Zhang
Despite the mitochondrial antiviral signalling protein (MAVS)-dependent RIG-I-like receptor (RLR) signalling pathway in the cytosol plays an indispensable role in the antiviral immunity of the host, surprising little is known in invertebrates. Here we characterized the major members of RLR pathway and investigated their signal transduction a Molluscs. We show that genes involved in RLR pathway were significantly induced during virus challenge, including CgRIG-I-1, CgMAVS, CgTRAF6 (TNF receptor-associated factor 6), and CgIRFs (interferon regulatory factors...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811492/interferon-alpha-treatment-rapidly-clears-hepatitis-e-virus-infection-in-humanized-mice
#7
Martijn D B van de Garde, Suzan D Pas, Gertine W van Oord, Lucio Gama, Youkyung Choi, Robert A de Man, Andre Boonstra, Thomas Vanwolleghem
Antiviral treatment options for chronic Hepatitis E Virus (HEV) infections are limited and immunological determinants of viral persistence remain largely unexplored. We studied the antiviral potency of pegylated interferon-α (pegIFNα) against HEV infections in humanized mice and modelled intrahepatic interferon stimulated gene (ISG) responses. Human gene expression levels in humanized mouse livers were analyzed by qPCR and Nanostring. Human CXCL10 was measured in mouse serum. HEV genotype 3 (gt3) infections were cleared from liver and feces within 8 pegIFNα doses in all mice and relapsed after a single pegIFNα injection in only half of treated animals...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811345/inhibitors-of-the-histone-methyltransferases-ezh2-1-induce-a-potent-antiviral-state-and-suppress-infection-by-diverse-viral-pathogens
#8
Jesse H Arbuckle, Paul J Gardina, David N Gordon, Heather D Hickman, Jonathan W Yewdell, Theodore C Pierson, Timothy G Myers, Thomas M Kristie
Epigenetic regulation is based on a network of complexes that modulate the chromatin character and structure of the genome to impact gene expression, cell fate, and development. Thus, epigenetic modulators represent novel therapeutic targets used to treat a range of diseases, including malignancies. Infectious pathogens such as herpesviruses are also regulated by cellular epigenetic machinery, and epigenetic therapeutics represent a novel approach used to control infection, persistence, and the resulting recurrent disease...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28811340/type-iii-interferon-mediated-signaling-is-critical-for-controlling-live-attenuated-yellow-fever-virus-infection-in-vivo
#9
Florian Douam, Yentli E Soto Albrecht, Gabriela Hrebikova, Evita Sadimin, Christian Davidson, Sergei V Kotenko, Alexander Ploss
Yellow fever virus (YFV) is an arthropod-borne flavivirus, infecting ~200,000 people worldwide annually and causing about 30,000 deaths. The live attenuated vaccine strain, YFV-17D, has significantly contributed in controlling the global burden of yellow fever worldwide. However, the viral and host contributions to YFV-17D attenuation remain elusive. Type I interferon (IFN-α/β) signaling and type II interferon (IFN-γ) signaling have been shown to be mutually supportive in controlling YFV-17D infection despite distinct mechanisms of action in viral infection...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28811242/natural-ns5a-inhibitor-resistance-associated-substitutions-in-hcv-genotype-1-infected-patients-from-italy
#10
Cinzia Caudai, Angelo Materazzi, Francesco Saladini, Simona Di Gianbenedetto, Carlo Torti, Barbara Ricciardi, Barbara Rossetti, Paolo Almi, Andrea De Luca, Maurizio Zazzi
OBJECTIVES: Genetic variability in NS5A is associated to different levels of resistance to the currently licensed NS5A inhibitors. The aim of this study was to detect NS5A inhibitor resistance associated substitutions (RASs) in HCV genotype 1 (GT1) patients naïve to direct acting HCV antivirals. METHODS: Amplification, Sanger sequencing and phylogenetic analysis of the HCV NS5A region were performed on plasma obtained from 122 consecutive patients with HCV chronic infection attending four different clinics in Italy...
August 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28811194/immunogenetic-studies-of-the-hepatitis-c-virus-infection-in-an-era-of-pan-genotype-antiviral-therapies-effective-treatment-is-coming
#11
Joel Henrique Ellwanger, Valéria de Lima Kaminski, Jacqueline Maria Valverde-Villegas, Daniel Simon, Vagner Ricardo Lunge, José Artur Bogo Chies
What are the factors that influence human hepatitis C virus (HCV) infection, hepatitis status establishment, and disease progression? Firstly, one has to consider the genetic background of the host and HCV genotypes. The immunogenetic host profile will reflect how each infected individual deals with infection. Secondly, there are environmental factors that drive susceptibility or resistance to certain viral strains. These will dictate (I) the susceptibility to infection; (II) whether or not an infected person will promote viral clearance; (III) the immune response and the response profile to therapy; and (IV) whether and how long it would take to the development of HCV-associated diseases, as well as their severity...
August 12, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28811186/identification-and-characterization-of-small-molecule-inhibitors-of-porcine-reproductive-and-respiratory-syndrome-virus
#12
Alyssa B Evans, Pengfei Dong, Hyelee Loyd, Jianqiang Zhang, George A Kraus, Susan Carpenter
Porcine reproductive and respiratory syndrome virus (PRRSV) is the etiological agent of PRRS, an economically significant disease of swine worldwide. PRRSV is poorly controlled by the currently available vaccines, and alternative control strategies are needed to help prevent the continual circulation of the virus. Previously, we developed a synthetic route for the natural compound atractylodinol and demonstrated anti-PRRSV activity in vitro. However, the synthetic route was inefficient and the yield was poor...
August 12, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28811159/implementing-and-scaling-up-hcv-treatment-services-for-people-who-inject-drugs-and-other-high-risk-groups-in-ukraine-an-evaluation-of-programmatic-and-treatment-outcomes
#13
Alyona Mazhnaya, Anna Meteliuk, Tetiana Barnard, Alexei Zelenev, Sergii Filippovych, Frederick L Alticec
BACKGROUND: HCV prevalence estimates among people who inject drugs (PWID) in Ukraine is high (60-90%), yet barriers to HCV treatment and care remain substantial including limited access to direct acting antiviral (DAA) medications. A feasibility scale-up project implemented HCV treatment in community-based settings to improve access to DAA treatment for key populations in this context. METHODS: Using program-level data and verified medical records, we describe the development, implementation processes and outcomes for HCV treatment for PWID and other risks groups...
August 12, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28811158/high-hcv-cure-rates-for-people-who-use-drugs-treated-with-direct-acting-antiviral-therapy-at-an-urban-primary-care-clinic
#14
Brianna L Norton, Julia Fleming, Marcus A Bachhuber, Meredith Steinman, Joseph DeLuca, Chinazo O Cunningham, Nirah Johnson, Fabienne Laraque, Alain H Litwin
BACKGROUND: Though direct acting antivirals (DAAs) promise high cure rates, many providers and payers remain concerned about successful treatment for people who use drugs (PWUD), even among those engaged in opioid agonist treatment (OAT). The efficacy of DAAs among PWUD in real-world settings is unclear. METHODS: We conducted a cohort study of patients initiating HCV treatment between January 2014 and August 2015 (n=89) at a primary care clinic in the Bronx, NY...
August 12, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28810835/secondary-organizing-pneumonia-following-viral-pneumonia-caused-by-severe-influenza-b-a-case-report-and-literature-reviews
#15
Nobuhiro Asai, Toyoharu Yokoi, Naoya Nishiyama, Yusuke Koizumi, Daisuke Sakanashi, Hideo Kato, Mao Hagihara, Hiroyuki Suematsu, Yuka Yamagishi, Hiroshige Mikamo
BACKGROUND: Some reported that organizing pneumonia (OP) may occur after influenza A infections including swine-origin influenza A (H1N1). However, OP associated with influenza B infection has never been reported. We report the first case of secondary OP associated with viral pneumonia caused by influenza B. CASE PRESENTATION: A 23-year old woman was diagnosed as viral pneumonia caused by type B influenza. Despite of antiviral therapy, abnormal chest shadows were not improved...
August 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28809949/maturation-dependent-expression-of-aim2-in-human-b-cells
#16
Alexandra Svensson, Marianela Patzi Churqui, Kerstin Schlüter, Liza Lind, Kristina Eriksson
Intracellular DNA- and RNA-sensing receptors, such as the IFN-inducible protein Absent in Melanoma 2 (AIM2), serve as host sensors against a wide range of infections. Immune sensing and inflammasome activation by AIM2 has been implicated in innate antiviral recognition in many experimental systems using cell-lines and animal models. However, little is known about the expression and function of AIM2 in freshly isolated human cells. In this study we investigated the expression of AIM2 in different cell types derived from human cord and adult peripheral blood, in steady state and following in vitro-activation...
2017: PloS One
https://www.readbyqxmd.com/read/28809742/treatment-of-chronic-hcv-infection-with-the-new-direct-acting-antivirals-daa-first-report-of-a-real-world-experience-in-southern-brazil
#17
Hugo Cheinquer, Hoel Sette-Jr, Fernando H Wolff, Alexandre de Araujo, Silvia Coelho-Borges, Silvia R P Soares, Mauricio F A Barros
INTRODUCTION AND AIM: There is almost no data regarding the efficacy of direct acting antivirals (DAAs) therapy in Brazil. The aim of this historical cohort study is to describe the sustained virologic response (SVR) rate among real-world compensated chronic hepatitis C patients in three hepatology centers from Southern Brazil. MATERIALS AND METHODS: Patients were included if they had at least 12 weeks follow-up after the end of therapy. Patients that were lost to follow-up or had treatment prematurely interrupted for any reason were considered treatment failure in this intention to treat analysis...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28809741/hepatitis-c-virus-infection-outcomes-among-immigrants-to-canada-a-retrospective-cohort-analysis
#18
Curtis L Cooper, Kednapa Thavorn, Ecaterina Damian, Daniel J Corsi
INTRODUCTION AND AIM: HCV-infected immigrants contribute to the total prevalence in Canada and other developed nations. Little is known about engagement in care, access to service, and treatment outcomes in recipients of Direct Acting Antiviral (DAA) HCV therapies among immigrants living with HCV. MATERIAL AND METHODS: HCV patients assessed at The Ottawa Hospital Viral Hepatitis Clinic between 2000-2016 were identified. Immigration history, race, socioeconomic status, HCV work-up, treatment and outcome data were evaluated...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28809740/early-successes-in-an-open-access-provincially-funded-hepatitis-c-treatment-program-in-prince-edward-island
#19
Daniel Smyth, Jordan W Francheville, Robin Rankin, Jeremy Beck, Connie Hoare, Stefanie Materniak, Greg German, Lisa Barrett, Natalie Bunimov-Wall
INTRODUCTION: The availability of curative hepatitis C therapies has created an opportunity to improve delivery and access. Local providers, government, industry, and community groups in Prince Edward Island developed an innovative province-wide care model. Our goal was to describe the first year of program implementation. MATERIAL AND METHODS: Using a community based prospective observational study design, all chronic hepatitis C referrals received from April 2015 to April 2016 were recorded in a database...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28809730/transplanting-kidney-allografts-from-hepatitis-c-infected-donors-into-hepatitis-c-uninfected-recipients-re-thinking-the-thinker-trial
#20
Eric M Yoshida, Trana Hussaini
In the not so distant past, organs from hepatitis C infected donors were either discarded or rarely transplanted into HCV viremic recipients - but never allocated to non-infected patients. However, the simplicity, ease and unprecedented success rates of HCV direct acting antiviral regimens has raised the possibility of utilizing such organs in an attempt to expand the donor pool. The thinker trial reports the first of such attempts. However, caution must be exercised prior to the widespread adoption of such strategy...
August 8, 2017: Annals of Hepatology
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