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https://www.readbyqxmd.com/read/28551874/coptidis-rhizoma-extract-inhibits-replication-of-respiratory-syncytial-virus-in-vitro-and-in-vivo-by-inducing-antiviral-state
#1
Byeong-Hoon Lee, Kiramage Chathuranga, Md Bashir Uddin, Prasanna Weeratunga, Myun Soo Kim, Won-Kyung Cho, Hong Ik Kim, Jin Yeul Ma, Jong-Soo Lee
Coptidis Rhizoma is derived from the dried rhizome of Ranunculaceous plants and is a commonly used traditional Chinese medicine. Although Coptidis Rhizoma is commonly used for its many therapeutic effects, antiviral activity against respiratory syncytial virus (RSV) has not been reported in detail. In this study, we evaluated the antiviral activities of Coptidis Rhizoma extract (CRE) against RSV in human respiratory tract cell line (HEp2) and BALB/c mice. An effective dose of CRE significantly reduces the replication of RSV in HEp2 cells and reduces the RSV-induced cell death...
June 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28551853/complete-genome-sequences-of-two-novel-autographiviruses-infecting-a-bacterium-from-the-pseudomonas-fluorescens-group
#2
Grzegorz Nowicki, Karolina Walkowiak-Nowicka, Agata Zemleduch-Barylska, Anna Mleczko, Patryk Frąckowiak, Natalia Nowaczyk, Emilia Kozdrowska, Jakub Barylski
In this paper, we describe two independent isolates of a new member of the subfamily Autographivirinae, Pseudomonas phage KNP. The type strain (KNP) has a linear, 40,491-bp-long genome with GC content of 57.3%, and 50 coding DNA sequences (CDSs). The genome of the second strain (WRT) contains one CDS less, encodes a significantly different tail fiber protein and is shorter (40,214 bp; GC content, 57.4%). Phylogenetic analysis indicates that both KNP and WRT belong to the genus T7virus. Together with genetically similar Pseudomonas phages (gh-1, phiPSA2, phiPsa17, PPPL-1, shl2, phi15, PPpW-4, UNO-SLW4, phiIBB-PF7A, Pf-10, and Phi-S1), they form a divergent yet coherent group that stands apart from the T7-like viruses (sensu lato)...
May 27, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28551683/jc-virus-and-lung-adenocarcinoma-fact-or-myth
#3
Emanuele Sinagra, Dario Raimondo, Elena Gallo, Mario Stella, Mario Cottone, Francesca Rossi, Marco Messina, Massimiliano Spada, Giovanni Tomasello, Giuseppe Ferrara, Aroldo Gabriele Rizzo
BACKGROUND/AIM: An association has been reported between lung cancer and John Cunningham (JC) virus infection. The aim of this study was to evaluate the prevalence of JC virus in a small cohort of patients with lung adenocarcinoma and assess its presence in nodal metastasis. MATERIALS AND METHODS: Consecutive samples of 13 surgically-removed lung tumors and 13 surrounding normal cancer-free tissues were selected. Five cases included metastatic lymph nodes. JC virus infection was assessed through nested PCR...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551668/occupational-risk-for-oral-cancer-in-nordic-countries
#4
Laura Tarvainen, Juho Suojanen, Pentti Kyyronen, Christian Lindqvist, Jan Ivar Martinsen, Kristina Kjaerheim, Elsebeth Lynge, Par Sparen, Laufey Tryggvadottir, Elisabete Weiderpass, Eero Pukkala
AIM: To evaluate occupational risk for cancer of the tongue, oral cavity or pharynx after adjustment for alcohol and tobacco use. MATERIALS AND METHODS: The data covered 14.9 million people and 28,623 cases of cancer of the tongue, oral cavity and pharynx in the Nordic countries 1961-2005. Alcohol consumption by occupation was estimated based on mortality from liver cirrhosis and incidence of liver cancer. Smoking by occupation was estimated based on the incidence of lung cancer...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551666/clinical-features-and-outcome-of-surgical-patients-with-non-b-non-c-hepatocellular-carcinoma
#5
Shigeki Wakiyama, Michinori Matsumoto, Koichiro Haruki, Takeshi Gocho, Taro Sakamoto, Hiroaki Shiba, Yasuro Futagawa, Yuichi Ishida, Katsuhiko Yanaga
AIM: To investigate the clinical characteristics and prognosis of surgical patients with non-B non-C hepatocellular carcinoma (NBNC-HCC) compared to those of hepatitis B virus (HBV)- and hepatitis C virus (HCV)-HCC. PATIENTS AND METHODS: Clinical data and outcomes were compared among the three groups. Prognostic factors of patients with NBNC-HCC were investigated. RESULTS: Compared to HBV-HCC, patients with NBNC-HCC had higher chance of hypertension (HTN) (p<0...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551625/intrahepatic-hcv-rna-level-and-genotype-1-independently-associate-with-hepatic-reticulon-3-expression
#6
Chih-Lang Lin, Rong-Nan Chien, Kung-Hao Liang, Po-Yuan Ke, Ya-Hui Huang, Chau-Ting Yeh
Background /Aim: Reticulon 3 (RTN3), resides predominantly in the endoplasmic reticulum and has opposite regulatory effects on Hepatitis C virus (HCV) replication through interacting with NS5A and NS4B proteins. This study aimed to unravel the actual effect of RTN3 on HCV replication. MATERIALS AND METHODS: A total of 115 HCV-related hepatocellular carcinoma patients receiving hepatectomy was enrolled in this study. The hepatic HCV RNA and RTN3 protein levels in the non-cancerous liver tissues were examined for clinical analysis...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28551509/bacteriophage-removal-efficiency-as-a-validation-and-operational-monitoring-tool-for-virus-reduction-in-wastewater-reclamation-review
#7
REVIEW
Mohan Amarasiri, Masaaki Kitajima, Thanh H Nguyen, Satoshi Okabe, Daisuke Sano
The multiple-barrier concept is widely employed in international and domestic guidelines for wastewater reclamation and reuse for microbiological risk management, in which a wastewater reclamation system is designed to achieve guideline values of the performance target of microbe reduction. Enteric viruses are one of the pathogens for which the target reduction values are stipulated in guidelines, but frequent monitoring to validate human virus removal efficacy is challenging in a daily operation due to the cumbersome procedures for virus quantification in wastewater...
May 19, 2017: Water Research
https://www.readbyqxmd.com/read/28551476/variability-in-viral-pathogenesis-modeling-the-dynamic-of-acute-and-persistent-infections
#8
REVIEW
Peter V Lidsky, Raul Andino, Igor M Rouzine
Virus infection often results in diverse outcomes. This variability of virus pathogenesis is not well understood. Here we revise theoretical arguments to further our understanding of factors controlling infection and its severity. We propose that variability in these factors results in different clinical outcomes, which ultimately ensure virus reproduction.
May 25, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28551451/a-sandwich-elisa-for-the-detection-of-neuraminidase-of-avian-influenza-a-h7n9-virus
#9
Yueyang Yu, Xi Zhang, Baihui Zhao, Ying Sun, Xiaoguan Zhang, Tian Bai, Jian Lu, Zi Li, Liqi Liu, Dayan Wang, Yuelong Shu, Jianfang Zhou, Kun Qin
Although exhibiting no or low virulence in poultry, avian influenza virus H7N9 has caused around 1,200 confirmed human infections in China with a case-fatality rate of 30% since 2013. A highly pathogenic H7N9 virus (HP-H7), with the HA antigenicity distinct from the previous, were recently detected in patients and poultry. Therefore, convenient rapid diagnosis with reliability will allow early antiviral use and management for H7N9 infection. Here, a sandwich ELISA targeting the conserved viral antigen, neuraminidase (NA) was developed...
May 24, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28551415/interferon-%C3%AE-response-is-impaired-by-hepatitis-b-virus-infection-in-tupaia-belangeri
#10
Mohammad Enamul Hoque Kayesh, Sayeh Ezzikouri, Haiying Chi, Takahiro Sanada, Naoki Yamamoto, Bouchra Kitab, Takumi Haraguchi, Rika Matsuyama, Chimène Nze Nkogue, Hitoshi Hatai, Noriaki Miyoshi, Shuko Murakami, Yasuhito Tanaka, Jun-Ichiro Takano, Yumiko Shiogama, Yasuhiro Yasutomi, Michinori Kohara, Kyoko Tsukiyama-Kohara
To date, the chimpanzee has been used as the natural infection model for hepatitis B virus (HBV). However, as this model is very costly and difficult to use because of ethical and animal welfare issues, we aimed to establish the tupaia (Tupaia belangeri) as a new model for HBV infection and characterized its intrahepatic innate immune response upon HBV infection. First, we compared the propagation of HBV genotypes A2 and C in vivo in tupaia hepatocytes. At 8-10days post infection (dpi), the level of HBV-A2 propagation in the tupaia liver was found to be higher than that of HBV-C...
May 24, 2017: Virus Research
https://www.readbyqxmd.com/read/28551366/modeling-spatial-invasion-of-ebola-in-west-africa
#11
Jeremy P D'Silva, Marisa C Eisenberg
The 2014-2015 Ebola Virus Disease (EVD) epidemic in West Africa was the largest ever recorded, representing a fundamental shift in Ebola epidemiology with unprecedented spatiotemporal complexity. To understand the spatiotemporal dynamics of EVD in West Africa, we developed spatial transmission models using a gravity-model framework at both the national and district-level scales, which we used to compare effectiveness of local interventions (e.g. local quarantine) and long-range interventions (e.g. border-closures)...
May 24, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28551308/indirect-elisa-ielisa-for-routine-detection-of-antibodies-against-minute-virus-of-mice-mvm-in-mice-colonies
#12
Juan M Laborde, Guillermo H Sguazza, Nadia A Fuentealba, Santiago G Corva, Cecilia Carbone, Cecilia M Galosi
In this study we developed an indirect ELISA to detect antibodies against Minute Virus of Mice (MVM) using an antigen produced from BHK-21 cells infected with a prototype strain of the virus. The optimal antigen concentration and serum dilutions were established. In order to analyze variability in the laboratory, reproducibility and repeatability within and between plates were determined. Then, a panel of 460 sera from conventional facilities and previously classified as positive or negative by the indirect fluorescent antibody assay was analyzed...
May 24, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28550816/designing-an-hcv-vaccine-a-unique-convergence-of-prevention-and-therapy
#13
REVIEW
Christopher M Walker
Direct acting antivirals can cure chronic hepatitis C virus (HCV) infection but whether they will reduce global liver disease burden is uncertain. Most chronic infections are undiagnosed and transmission has increased in recent years. The first trial of a preventive vaccine is now underway in humans at risk for HCV infection. It will test the novel hypothesis that T cell-mediated immunity alone can prevent persistent HCV infection. Another vaccine that elicits neutralizing antibodies is at an advanced stage of development...
May 24, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28550757/serum-levels-of-peptide-cathelicidin-ll-37-in-elderly-patients-with-depression
#14
Elżbieta Kozłowska, Adam Wysokiński, Ewa Brzezińska-Błaszczyk
Cathelicidin LL-37 is a small cationic that plays an important role in antimicrobial defense, as it kills a broad spectrum of infectious agents by disrupting their membranes, including gram-positive and gram-negative bacteria, some viruses and fungi; and it neutralizes activity of bacterial endotoxins. Moreover, cathelicidin LL-37 exerts proinflammatory effect, while numerous reports indicate the role of inflammation in the development of depression. The purpose of this study was to evaluate the circulating levels of cathelicidin LL-37 in elderly depressed patients...
May 22, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28550754/linear-polysialoside-outperforms-dendritic-analogs-for-inhibition-of-influenza-virus-infection-in%C3%A2-vitro-and-in%C3%A2-vivo
#15
Sumati Bhatia, Daniel Lauster, Markus Bardua, Kai Ludwig, Stefano Angioletti-Uberti, Nicole Popp, Ute Hoffmann, Florian Paulus, Matthias Budt, Marlena Stadtmüller, Thorsten Wolff, Alf Hamann, Christoph Böttcher, Andreas Herrmann, Rainer Haag
Inhibition of influenza A virus infection by multivalent sialic acid inhibitors preventing viral hemagglutinin binding to host cells of the respiratory tract is a promising strategy. However, optimal geometry and optimal ligand presentation on multivalent scaffolds for efficient inhibition both in vitro and in vivo application are still unclear. Here, by comparing linear and dendritic polyglycerol sialosides (LPGSA and dPGSA) we identified architectural requirements and optimal ligand densities for an efficient multivalent inhibitor of influenza virus A/X31/1 (H3N2)...
May 20, 2017: Biomaterials
https://www.readbyqxmd.com/read/28550721/clinical-performance-of-the-veris-hcv-assay-for-hepatitis-c-virus-rna-quantification
#16
Laure Izquierdo, Corinne Prégermain, Corinne Hottelet, Gwenaëlle Decombe, Anne-Marie Roque-Afonso
BACKGROUND: Diagnosis of hepatitis C virus (HCV) infection and treatment monitoring rely on detection/quantification of HCV RNA and real-time polymerase chain reaction (PCR) techniques are expected to equivalently quantify the different HCV genotypes. OBJECTIVE: The clinical performance of the VERIS HCV assay for HCV RNA quantification was compared to that of the Abbott RealTime HCV assay. STUDY DESIGN: Qualitative concordance and quantitative comparison were evaluated on a first panel of 286 clinical samples containing HCV genotypes 1-6...
May 18, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28550598/serum-ebv-ea-iga-and-vca-iga-antibodies-can-be-used-for-risk-group-stratification-and-prognostic-prediction-in-extranodal-nk-t-cell-lymphoma-24-year-experience-at-a-single-institution
#17
Yuhua Huang, Huilan Rao, Shumei Yan, Fang Wang, Qinian Wu, Yanfen Feng, Yujing Zhang
Although extranodal NK/T cell lymphoma (ENKTCL) is consistently associated with Epstein-Barr virus (EBV) infection, the manifestation and prognostic value of serum EBV antibodies still remain unknown. One hundred and forty-one patients with ENKTCL were evaluated for serum EBV EA-IgA and VCA-IgA antibodies levels in the past 24 years in our institution. Their correlation with clinicopathological features, plasma EBV DNA load, and patients' outcomes was analyzed. EBV EA-IgA ≥1:10 and VCA-IgA ≥1:160 were found in 18...
May 27, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28550453/exchange-of-genetic-sequences-between-viruses-and-hosts
#18
Robin A Weiss
Although genetic transfer between viruses and vertebrate hosts occurs less frequently than gene flow between bacteriophages and prokaryotes, it is extensive and has affected the evolution of both parties. With retroviruses, the integration of proviral DNA into chromosomal DNA can result in the activation of adjacent host gene expression and in the transduction of host transcripts into retroviral genomes as oncogenes. Yet in contrast to lysogenic phage, there is little evidence that viral oncogenes persist in a chain of natural transmission or that retroviral transduction is a significant driver of the horizontal spread of host genes...
May 28, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28550434/flagellin-fljb-as-an-adjuvant-to-the-recombinant-adenovirus-rabies-glycoprotein-vaccine-increases-immune-responses-against-rabies-in-mice
#19
Xingxing Xiao, Yun Zhang, Qiaolin Wei, Xiangping Yin
Rabies virus (RABV) causes an acute progressive viral encephalitis. Although currently licensed vaccines have an excellent safety and efficacy record, the development of a safer and more cost-effective vaccine is still being sought. An E1-deleted, replication-defective human adenovirus type 5 (HAd5) vector expressing RABV glycoprotein (HAd5-G) is thought to be a promising candidate vaccine for immune prophylaxis against rabies. Salmonella enterica serovar Typhimurium (S. Typhimurium) flagellin is a well-known immune adjuvant...
May 26, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28550433/the-biological-features-and-genetic-diversity-of-novel-fish-rhabdovirus-isolates-in-china
#20
Xiaozhe Fu, Qiang Lin, Hongru Liang, Lihui Liu, Zhibin Huang, Ningqiu Li, Jianguo Su
The Rhabdoviridae is a diverse family of negative-sense single-stranded RNA viruses which infects mammals, birds, reptiles, fish, insects and plants. Herein, we reported the isolation and characterization of 6 novel viruses from diseased fish collected from China including SCRV-QY, SCRV-SS, SCRV-GM, CmRV-FS, MsRV-SS, OmbRV-JM. The typical clinical symptom of diseased fish was hemorrhaging. Efficient propagation of these isolates in a Chinese perch brain cell line was determined by means of observation of cytopathic effect, RT-PCR and electron microscopy...
May 26, 2017: Archives of Virology
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