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Archives of Virology

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https://www.readbyqxmd.com/read/28530014/microrna-30a-5p-promotes-replication-of-porcine-circovirus-type-2-through-enhancing-autophagy-by-targeting-14-3-3
#1
Xiaomin Wang, Xianglan Xu, Wei Wang, Zhengyu Yu, Libin Wen, Kongwang He, Hongjie Fan
Accumulating evidence demonstrates that autophagy and microRNAs (miRNAs) play key roles in regulating virus-host interactions and can restrict or facilitate viral replication. In the present study we examined whether a functional relationship exists between autophagy, miRNA and porcine circovirus type 2 (PCV2) infection, using several approaches. We demonstrated that there was a positive correlation between PCV2 infection and autophagy in 3D4/21 cells and autophagy induced by PCV2 infection triggered PCV2 replication...
May 22, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28526965/complete-sequence-and-genomic-annotation-of-carrot-torradovirus-1
#2
Zuriñe Rozado-Aguirre, Ian Adams, Adrian Fox, Matthew Dickinson, Neil Boonham
Carrot torradovirus 1 (CaTV1) is a new member of the genus Torradovirus within the family Secoviridae. CaTV1 genome sequences were obtained from a previous next-generation sequencing (NGS) study and were compared to other members and tentative new members of the genus. The virus has a bipartite genome, and RACE was used to amplify and sequence each end of RNA1 and RNA2. As a result, RNA1 and RNA2 are estimated to contain 6944 and 4995 nucleotides, respectively, with RNA1 encoding the proteins involved in virus replication, and RNA2 encoding the encapsidation and movement proteins...
May 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28526964/characterization-of-a-new-isolate-of-pepper-chlorotic-spot-virus-from-yunnan-province-china
#3
Kuanyu Zheng, Tsung-Chi Chen, Shyi-Dong Yeh, Md Siddiqur Rahman, Xiaoxia Su, Kuo Wu, Ting Li, Zhongkai Zhang, Jiahong Dong
A new isolate, 14YV733, of pepper chlorotic spot virus (PCSV) from chili peppers in Yunnan province of China was identified. The typical tospoviral particles of 80-120 nm in diameter were observed by electron microscopy. The virus caused systemic symptoms in several solanaceous plants and the Brassica rapa L. Chinensis group with mechanical inoculation. The sap from infected leaves reacted positively to a rabbit antibody to the N protein of watermelon silver mottle virus (WSMoV) in immunoblotting. The S, M, and L RNAs of PCSV-14YV733 are 3310 nts, 4711 nts, and 8913 nts long, respectively...
May 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28523522/vaccinia-virus-g1-protein-absence-of-autocatalytic-self-processing
#4
F G G Leite, A Bergthaler, T Skern
Vaccinia virus relies on a series of proteolytic cleavage events involving two viral proteins, I7 and G1, to complete its life cycle. Furthermore, G1 itself is cleaved during vaccinia virus infection. However, convincing evidence is lacking to show whether G1 participates in autoproteolysis or is a substrate of another protease. We employed both biochemical and cell-based approaches to investigate G1 cleavage. G1, when expressed in bacteria, rabbit reticulocyte lysates or HeLa cells, was not processed. Moreover, G1 was cleaved in infected cells, but only in the presence of virus late gene expression; cleavage was strongly inhibited by proteasome inhibitors...
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28523521/in-vitro-and-in-vivo-characterization-of-a-novel-h1n1-2009-influenza-virus-reassortant-with-an-ns-gene-from-a-highly-pathogenic-h5n1-virus-isolated-from-a-human
#5
Shengbing Liu, Liangyan Zhang, Zhidong Yao, Li Xing, Kun Liu
The triple-reassortant H1N1/2009 influenza A virus, which caused the first influenza pandemic of the 21(st) century, is generally associated with mild disease and a relatively low mortality rate comparable to that of seasonal influenza virus outbreaks. There is a growing concern about the potential for reassortment between the low-mortality H1N1/2009 and other high-mortality influenza viruses. Here, we describe and characterize a novel reassortant H1N1/2009 influenza virus, isolated from a human sample, that contained an NS gene from a highly pathogenic H5N1 virus...
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28523520/hepatitis-e-virus-serology-and-pcr-does-the-methodology-matter
#6
Lien Cattoir, Frederik Van Hoecke, Tom Van Maerken, Eveline Nys, Inge Ryckaert, Matthias De Boulle, Anja Geerts, Xavier Verhelst, Isabelle Colle, Veronik Hutse, Vanessa Suin, Magali Wautier, Steven Van Gucht, Hans Van Vlierberghe, Elizaveta Padalko
Hepatitis E virus (HEV) genotype 3 is an emerging pathogen in the developed world. As the clinical manifestations and routine laboratory parameters are often nonspecific, accurate diagnostic tests are crucial. In the current study, the performance of six serological assays and three PCR assays for the detection of HEV was evaluated. In the setting of the Ghent University Hospital, patients with clinically suspected HEV infection were tested for the presence of HEV IgM and IgG as well as HEV RNA. Serology was performed using six commercial HEV ELISA assays: Biorex, Wantai and Mikrogen IgM and IgG...
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28523519/erratum-to-a-metagenomics-study-for-the-identification-of-respiratory-viruses-in-mixed-clinical-specimens-an-application-of-the-iterative-mapping-approach
#7
Yu-Nong Gong, Shu-Li Yang, Guang-Wu Chen, Yu-Wen Chen, Yhu-Chering Huang, Hsiao-Chen Ning, Kuo-Chien Tsao
No abstract text is available yet for this article.
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28516287/spread-of-poxviruses-in-livestock-in-brazil-associated-with-cases-of-double-and-triple-infection
#8
Mateus Laguardia-Nascimento, Ana Paula Ferreira de Oliveira, Isabela Ciarlini Azevedo, Anselmo Vasconcelos Rivetti Júnior, Marcelo Fernandes Camargos, Antônio Augusto Fonseca Júnior
The objective of this work is to describe the distribution of outbreaks of vaccinia virus (VACV), pseudocowpox virus (PCPV), and bovine papular stomatitis virus (BSPV) in Brazil. The Official Laboratory of the Brazilian Ministry of Agriculture received 89 samples from different locations in Brazil in 2015 and 2016 for diagnosis of vesicular and exanthematous disease. Poxvirus coinfections occurred in 11 out of 33 outbreaks, including the first reported triple infection by BPSV, PCPV, and VACV. This occurrence may be associated with the circulation of these viruses in Brazilian cattle...
May 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28508987/transmission-of-h6n2-wild-bird-origin-influenza-a-virus-among-multiple-bird-species-in-a-stacked-cage-setting
#9
J Jeffrey Root, Susan A Shriner, Jeremy W Ellis, Kaci K VanDalen, Alan B Franklin
Live bird markets are common in certain regions of the U.S. and in other regions of the world. We experimentally tested the ability of a wild bird influenza A virus to transmit from index animals to naïve animals at varying animal densities in stacked cages in a simulated live bird market. Two and six mallards, five and twelve quail, and six and nine pheasants were used in the low-density and high-density stacks of cages, respectively. Transmission did not occur in the high-density stack of cages likely due to the short duration and relatively low levels of shedding, a dominance of oral shedding, and the lack of transmission to other mallards in the index cage...
May 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28501954/complete-genome-sequence-of-longan-witches-broom-associated-virus-a-novel-member-of-the-family-potyviridae
#10
Jang-Kyun Seo, Mi-Kyeong Kim, Hae-Ryun Kwak, Jeong-Soo Kim, Hong-Soo Choi
The complete genome sequence of a new virus isolated from a longan (Dimocarpus longan Lour.) plant showing witches' broom syndrome was determined. The viral genome is composed of a monopartite single-stranded RNA of 9,428 nucleotides excluding the 3' poly(A) tail and contains one large single open reading frame encoding a polyprotein of 3086 amino acids. BLAST searches of protein databases showed that the encoded polyprotein has a maximum amino acid sequence identity of 35% (with 85% coverage) to that of the isolate Minnesota of rose yellow mosaic virus (RoYMV; family Potyviridae; genus not assigned)...
May 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28500445/genetic-diversity-and-evolutionary-characteristics-of-type-2-porcine-reproductive-and-respiratory-syndrome-virus-in-southeastern-china-from-2009-to-2014
#11
Jiankui Liu, Xia Zhou, Junqiong Zhai, Bing Li, Chunhua Wei, Ailing Dai, Xiaoyan Yang, Manlin Luo
The objective of this study was to assess the genetic diversity of porcine reproductive and respiratory syndrome virus circulating in Fujian province (southeastern China). Based on 53 ORF5 nucleotide sequences collected from nine sites, both highly pathogenic (sublineage 8.7) and lineage 1 strains were circulating in Fujian in 2009-2014 along with lineages 3 and 5.1. Notably, the lineage 1 strains were closely related to the NADC30 strain circulating in North America and were the predominant strains in 2014...
May 12, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28500444/development-of-a-recombinase-polymerase-amplification-assay-for-the-diagnosis-of-banana-bunchy-top-virus-in-different-banana-cultivars
#12
Reetika Kapoor, Nishant Srivastava, Shailender Kumar, R K Saritha, Susheel Kumar Sharma, Rakesh Kumar Jain, Virendra Kumar Baranwal
Recombinase polymerase amplification (RPA) is a rapid, isothermal amplification method with high specificity and sensitivity. In this study, an assay was developed and evaluated for the detection of banana bunchy top virus (BBTV) in infected banana plants. Three oligonucleotide primer pairs were designed from the replicase initiator protein gene sequences of BBTV to function both in RPA as well as in polymerase chain reaction (PCR). A total of 133 symptomatic as well as asymptomatic banana leaf samples from various cultivars were collected from the different regions of India and evaluated for BBTV infection using the RPA assay...
May 12, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28500443/genome-characterization-of-a-novel-megrivirus-related-avian-picornavirus-from-a-carnivorous-wild-bird-western-marsh-harrier-circus-aeruginosus
#13
Ákos Boros, Péter Pankovics, Róbert Mátics, Ádám Adonyi, Nóra Bolba, Tung Gia Phan, Eric Delwart, Gábor Reuter
In this study, the complete genome of a novel picornavirus called harrier picornavirus 1 (HaPV-1) strain harrier/MR-01/HUN/2014 (KY488458) was sequenced and analysed from a cloacal sample of a threatened, carnivorous wild bird, western marsh harrier (Circus aeruginosus). HaPV-1 was detectable from 2 of the 3 samples from harriers. HaPV-1 is phylogenetically related to megriviruses (genus Megrivirus) from domestic chicken, turkey and duck, showing a similar genome organization pattern; it also has an avian picornavirus-like "Unit A" motif in the 3' UTR...
May 12, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28497216/genome-characterization-of-sweet-potato-symptomless-virus-1-a-mastrevirus-with-an-unusual-nonanucleotide-sequence
#14
Mengji Cao, Pingxiu Lan, Fan Li, Jorge Abad, Changyong Zhou, Ruhui Li
Complete genomic sequences of nine isolates of sweet potato symptomless virus 1 (SPSMV-1), a virus of the genus Mastrevirus in the family Geminiviridae, were determined from sweet potato accessions from different countries and found to be 2,559-2,602 nucleotides in length. These isolates shared 97-100% genome sequence identity and had an unusual nonanucleotide sequence (TAAGATTCC) in a large intergenic region as well as an additional open reading frame, C3, which is conserved in dicot-infecting mastreviruses...
May 11, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28493052/development-of-a-colorimetric-reverse-transcription-loop-mediated-isothermal-amplification-assay-for-the-detection-of-mirafiori-lettuce-big-vein-virus
#15
Mohammad Amin Almasi
An RT-LAMP assay was developed to detect Mirafiori lettuce big vein virus (MiLBVV) and was compared with DAS-ELISA and RT-PCR. All primers were designed on the basis of the coat protein gene of the virus. In addition, a novel immunocapture (IC) RT-LAMP assay for rapid and easy detection of MiLBVV was developed, and factors such as safety, simplicity, cost, user-friendliness and safety were compared with those of DAS-ELISA, RT-PCR and RT-LAMP assays. Compared with DAS-ELISA and RT-PCR, RT-LAMP and IC-RT-LAMP had higher sensitivity (100-fold) but similar specificity, with the advantage of a shorter assay time and no need for RNA extraction (in IC-RT-LAMP)...
May 10, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28488082/genome-wide-identification-of-cucumber-green-mottle-mosaic-virus-responsive-micrornas-in-watermelon
#16
Yuyan Sun, Xiaowei Niu, Min Fan
Cucumber green mottle mosaic virus (CGMMV) is a damaging pathogen that attacks crop plants belonging to the family Cucurbitaceae. Little is known about the regulatory role of microRNAs (miRNAs) in response to CGMMV infection. To identify CGMMV-responsive miRNAs, two sRNA libraries from mock-inoculated and CGMMV-infected watermelon leaves were constructed and sequenced using Solexa sequencing technology. In total, 471 previously known and 1,809 novel miRNAs were obtained, of which 377 known and 246 novel miRNAs were found to be differentially expressed during CGMMV infection...
May 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28478578/molecular-detection-and-genetic-analysis-of-akabane-virus-genogroup-ib-in-small-ruminants-in-turkey
#17
Murat Şevik
Akabane disease is a viral disease transmitted by biting midges and can cause teratogenic malformations in cattle, sheep and goats. Abortion outbreaks associated with arthrogryposis and cerebellar hypoplasia in two epidemiologically independent flocks were reported in the Mediterranean region of Turkey in 2015. Phylogenetic analysis based on nucleocapsid (N) gene sequences showed that the field isolates presented here belong to the genogroup Ib. The akabane virus (AKAV) field isolates analysed in this study displayed 6 new amino acid substitutions in N and non-structural protein chains compared with those of AKAV strains belonging to genogroup Ib...
May 6, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28478577/isolation-and-phylogenetic-analysis-of-three-feline-calicivirus-strains-from-domestic-cats-in-jilin-province-china
#18
Yanli Zhao, Xiaoqing Chen, Ying Ying, Kai Wang, Hongwei Dong, Chao Gao, Songtao Yang, Guixue Hu
Feline calicivirus (FCV) is a highly prevalent pathogen that can cause infectious felid upper respiratory tract disease. The majority of complete genome sequences of FCV strains reported to date are from the USA. In this study, three FCV strains, CH-JL1, CH-JL2 and CH-JL3, were isolated from domestic cats in Jilin Province, China. Sequence analysis revealed that except for strains HRB-SS, WZ-1, XH, 12Q087-1 and 12Q087-5, the 3' untranslated regions (UTRs) of CH-JL2 and CH-JL3 are more than 20 nucleotides longer than those of all other reference isolates...
May 6, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28477174/complete-cryspovirus-genome-sequences-from-cryptosporidium-parvum-isolate-iowa
#19
Minh Vong, Jacob G Ludington, Honorine D Ward, Max L Nibert
Bisegmented dsRNA viruses that infect most or all isolates of apicomplexan parasite Cryptosporidium parvum are currently assigned to a single species, Cryptosporidium parvum virus 1, in genus Cryspovirus, family Partitiviridae. An analysis of existing sequence data suggested that the complete sequences of both cryspovirus genome segments, dsRNA1 and dsRNA2, had yet to be determined. We therefore set out to accomplish this for the virus strain that infects C. parvum isolate Iowa. The results suggest that several previous cryspovirus sequences are indeed truncated at one or both segment termini and also identify sequences at or near the termini that are conserved in both segments...
May 5, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28474225/trans-dissemination-of-exosomes-from-hiv-1-infected-cells-fosters-both-hiv-1-trans-infection-in-resting-cd4-t-lymphocytes-and-reactivation-of-the-hiv-1-reservoir
#20
Chiara Chiozzini, Claudia Arenaccio, Eleonora Olivetta, Simona Anticoli, Francesco Manfredi, Flavia Ferrantelli, Gabriella d'Ettorre, Ivan Schietroma, Mauro Andreotti, Maurizio Federico
Intact HIV-1 and exosomes can be internalized by dendritic cells (DCs) through a common pathway leading to their transmission to CD4(+) T lymphocytes by means of mechanisms defined as trans-infection and trans-dissemination, respectively. We previously reported that exosomes from HIV-1-infected cells activate both uninfected quiescent CD4(+) T lymphocytes, which become permissive to HIV-1, and latently infected cells, with release of HIV-1 particles. However, nothing is known about the effects of trans-dissemination of exosomes produced by HIV-1-infected cells on uninfected or latently HIV-1-infected CD4(+) T lymphocytes...
May 4, 2017: Archives of Virology
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