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https://www.readbyqxmd.com/read/28637760/discovery-of-a-highly-divergent-coronavirus-in-the-asian-house-shrew-from-china-illuminates-the-origin-of-the-alphacoronaviruses
#1
Wen Wang, Xian-Dan Lin, Yong Liao, Xiao-Qing Guan, Wen-Ping Guo, Jian-Guang Xing, Edward C Holmes, Yong-Zhen Zhang
Although shrews are one of the largest groups of mammals little is known about their role in the evolution and transmission of viral pathogens including coronaviruses. We captured 266 Asian house shrews (Suncus murinus) in Jiangxi and Zhejiang provinces, China, during 2013-2015. Coronavirus (CoV) RNA was detected in 24 Asian house shrews, with an overall prevalence of 9.02%. Complete viral genome sequences were successfully recovered from the RNA positive samples. The newly discovered shrew CoV fell into four lineages reflecting their geographic origins, indicative of largely allopatric evolution...
June 21, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28634691/modulation-of-rotavirus-severe-gastroenteritis-by-the-combination-of-probiotics-and-prebiotics
#2
REVIEW
Guadalupe Gonzalez-Ochoa, Lilian K Flores-Mendoza, Ramona Icedo-Garcia, Ricardo Gomez-Flores, Patricia Tamez-Guerra
Annual mortality rates due to infectious diarrhea are about 2.2 million; children are the most vulnerable age group to severe gastroenteritis, representing group A rotaviruses as the main cause of disease. One of the main factors of rotavirus pathogenesis is the NSP4 protein, which has been characterized as a viral toxin involved in triggering several cellular responses leading to diarrhea. Furthermore, the rotavirus protein NSP1 has been associated with interferon production inhibition by inducing the degradation of interferon regulatory factors IRF3, IRF5, and IRF7...
June 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28622871/a-spike-specific-whole-porcine-antibody-isolated-from-a-porcine-b-cell-that-neutralizes-both-genogroup-1-and-2-pedv-strains
#3
Fang Fu, Lin Li, Lingling Shan, Beibei Yang, Hongyan Shi, Jiaoer Zhang, Hongfeng Wang, Li Feng, Pinghuang Liu
Porcine epidemic diarrhea (PED), caused by an alpha coronavirus, is a highly contagious disease and causes high morbidity and mortality in suckling piglets. Isolating PEDV neutralizing antibodies from porcine B cells is critical to elucidate the development of PEDV neutralizing antibodies and the protective mechanism of PEDV infection. Here, we described the isolation of a PEDV-neutralizing antibody from the B cell of a vaccinated pig. The antibody, named PC10, was demonstrated to target the conformational epitope of PEDV spike protein, specifically bind to the infected cells of PEDV genogroup 1 and 2 strains, and potently neutralize PEDV infection...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28619152/the-newly-emerging-duck-origin-goose-parvovirus-in-china-exhibits-a-wide-range-of-pathogenicity-to-main-domesticated-waterfowl
#4
Shifeng Xiao, Shilong Chen, Xiaoxia Cheng, Fengqiang Lin, Shao Wang, Xiaoli Zhu, Bo Yu, Meiqing Huang, Jinxiang Wang, Nanyang Wu, Min Zheng, Shaoying Chen, Fusong Yu
Short beak and dwarfism syndrome virus (SBDSV) is a newly emerging distinct duck-origin goose parvovirus that belongs to the genus Dependovirus. Our previous studies have found that SBDSV was highly pathogenic to Cherry Valley ducklings and mule ducklings. However, little is known about its pathogenicity to other waterfowls. In the present study, the pathogenicity of SBDSV was evaluated in domesticated waterfowl including Muscovy ducklings, Sheldrake ducklings and domestic goslings. All experimentally infected birds exhibited remarkable growth retardation, anorexia and diarrhea similar to naturally infected birds...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28619148/antigenic-diversity-of-brazilian-isolates-of-hobi-like-pestiviruses
#5
R K Dias, J F Cargnelutti, M N Weber, C W Canal, F V Bauermann, J F Ridpath, R Weiblen, E F Flores
Hobi-like viruses comprise an unclassified group of bovine pestiviruses related to bovine viral diarrhea virus 1 (BVDV-1) and 2 (BVDV-2). These viruses were originally identified in fetal bovine serum from Brazilian origin and, subsequently, isolated from diseased animals in several countries. Herein we performed an antigenic characterization of eight Brazilian HoBi-like viruses isolated from persistently infected (PI) animals and from gastroenteric disease (2007-2015). Phylogenetic analysis based on the 5' unstranslated region (UTR) clustered these viruses with other HoBi-like viruses from European and Asiatic origin...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28600079/synthesis-antiviral-evaluation-and-molecular-docking-studies-of-n-4-aryl-substituted-unsubstituted-thiosemicarbazones-derived-from-1-indanones-as-potent-anti-bovine-viral-diarrhea-virus-agents
#6
María C Soraires Santacruz, Matías Fabiani, Eliana F Castro, Lucía V Cavallaro, Liliana M Finkielsztein
A series of N(4)-arylsubstituted thiosemicarbazones derived from 1-indanones and a set of compounds lacking such substitution in the N(4) position of the thiosemicarbazone moiety were synthesized and evaluated for their anti-bovine viral diarrhea virus (BVDV) activity. Among these, derivatives 2 and 15 displayed high activity (EC50=2.7±0.4 and 0.7±0.1µM, respectively) as inhibitors of BVDV replication. Novel key structural features related to the anti-BVDV activity were identified by structure-activity relationship (SAR) analysis...
May 27, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28591694/the-nucleocapsid-proteins-of-mouse-hepatitis-virus-and-severe-acute-respiratory-syndrome-coronavirus-share-the-same-ifn-%C3%AE-antagonizing-mechanism-attenuation-of-pact-mediated-rig-i-mda5-activation
#7
Zhen Ding, Liurong Fang, Shuangling Yuan, Ling Zhao, Xunlei Wang, Siwen Long, Mohan Wang, Dang Wang, Mohamed Frahat Foda, Shaobo Xiao
Coronaviruses (CoVs) are a huge threat to both humans and animals and have evolved elaborate mechanisms to antagonize interferons (IFNs). Nucleocapsid (N) protein is the most abundant viral protein in CoV-infected cells, and has been identified as an innate immunity antagonist in several CoVs, including mouse hepatitis virus (MHV) and severe acute respiratory syndrome (SARS)-CoV. However, the underlying molecular mechanism(s) remain unclear. In this study, we found that MHV N protein inhibited Sendai virus and poly(I:C)-induced IFN-β production by targeting a molecule upstream of retinoic acid-induced gene I (RIG-I) and melanoma differentiation gene 5 (MDA5)...
May 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28589511/complete-genome-sequence-of-a-novel-s-insertion-variant-of-porcine-epidemic-diarrhea-virus-from-south-korea
#8
Sunhee Lee, Changhee Lee
Porcine epidemic diarrhea virus (PEDV) is an emerging and re-emerging viral pathogen of pigs that is causing significant economic concerns in the global pork industry. The virulent G2b PEDV subgroup, which was responsible for the 2013-2014 pandemics on the American and Asian continents, hit Jeju Island in 2014, which had been PEDV-free since 2004. This study presents molecular characterization of a novel PEDV variant with a 5-amino acid (aa) insertion (DTHPE) in the spike (S) gene (an S-insertion) that was identified in diarrheic piglets from Jeju Island...
June 6, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28588628/the-effect-of-bovine-viral-diarrhea-virus-on-bovine-monocyte-phenotype
#9
K S Choi
Bovine viral diarrhea virus (BVDV) is an economically important pathogen of the livestock industry worldwide. BVDV is classified into cytopathic (cp) and noncytopathic (ncp), depending on its effects on cultured cells. BVDV is known to alter the host's immune response. Of this, major histocompatibility complex (MHC) class II molecules play a central role in the development and function of the immune system, and are comprised of two types, DR and DQ, in cattle. In this study, we investigated the expression of MHC class II on monocytes infected with ncp BVDV1 or ncp BVDV2...
2017: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/28587150/variability-and-global-distribution-of-subgenotypes-of-bovine-viral-diarrhea-virus
#10
REVIEW
Kadir Yeşilbağ, Gizem Alpay, Paul Becher
Bovine viral diarrhea virus (BVDV) is a globally-distributed agent responsible for numerous clinical syndromes that lead to major economic losses. Two species, BVDV-1 and BVDV-2, discriminated on the basis of genetic and antigenic differences, are classified in the genus Pestivirus within the Flaviviridae family and distributed on all of the continents. BVDV-1 can be segregated into at least twenty-one subgenotypes (1a-1u), while four subgenotypes have been described for BVDV-2 (2a-2d). With respect to published sequences, the number of virus isolates described for BVDV-1 (88...
May 26, 2017: Viruses
https://www.readbyqxmd.com/read/28583610/effects-of-oocytes-exposure-to-bovine-diarrhea-viruses-bvdv-1-bvdv-2-and-hobi-like-virus-on-in%C3%A2-vitro-produced-bovine-embryo-development-and-viral-infection
#11
V da Silva Cardoso Pinto, M F Alves, M de Souza Nunes Martins, A C Basso, J H Tannura, J H F Pontes, M Santos Lima, T Garcia da Silva, L H Okuda, E Stefano, A H C N Romaldini, D R Arnold, E M Pituco
As production of in vitro (IVP) bovine embryos steadily increases, the sanitary risk associated with IVP embryos remains a concern. One of the greatest concerns is how BVDV may be transmitted through IVP embryos. The objective of this study was to evaluate the effects caused by BVDV-1, BVDV-2 and Hobi-like virus exposure during in vitro maturation on embryo development and viral infection. Abittior-derived oocytes were randomly assigned for in vitro maturation with serial concentrations of BVDV-1 (3.12 × 10(2) - 2...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28582444/selection-and-characterization-of-specific-nanobody-against-bovine-virus-diarrhea-virus-bvdv-e2-protein
#12
Tiansen Li, Meiling Huang, Hongran Xiao, Guoqi Zhang, Jinhua Ding, Peng Wu, Hui Zhang, Jinliang Sheng, Chuangfu Chen
Bovine viral diarrhea-mucosal disease (BVD-MD) is caused by bovine viral diarrhea virus (BVDV), and results in abortion, stillbirth, and fetal malformation in cows. Here, we constructed the phage display vector pCANTAB 5E-VHH and then transformed it into Escherichia coli TG1-competent cells, to construct an initial anti-BVDV nanobody gene library. We obtained a BVDV-E2 antigen epitope bait protein by prokaryotic expression using the nucleotide sequence of the E2 gene of the BVDV-NADL strain published in GenBank...
2017: PloS One
https://www.readbyqxmd.com/read/28570694/trends-of-vaccine-preventable-diseases-in-afghanistan-from-the-disease-early-warning-system-2009-2015
#13
Abram L Wagner, Mohammad Y Mubarak, Laura E Johnson, Julia M Porth, Jenna E Yousif, Matthew L Boulton
BACKGROUND: Afghanistan's public health system was neglected during decades of military and civil conflict, and trends in infectious disease occurrence remain poorly characterized. This study examines cyclical and long-term trends of six vaccine-preventable diseases: pneumonia, diarrhea, meningitis, typhoid, measles, and acute viral hepatitis. METHODS: Using weekly data collected between 2009 and 2015 through Afghanistan's Disease Early Warning System, we calculated monthly case counts, and fit a Poisson regression with a Fourier transformation for seasonal cycles and dummy variables for year...
2017: PloS One
https://www.readbyqxmd.com/read/28566084/-multicenter-investigation-of-bufavirus-in-the-etiology-of-viral-central-nervous-system-infections-of-adults-and-children
#14
Aylin Altay Koçak, Murat Öcal, Meltem Polat, Saliha Kanık Yüksek, Anıl Aktaş Tapısız, Hasan Tezer, Aykut Özkul, Koray Ergünay, Gülendam Bozdayı, Kamruddin Ahmed
Bufavirus (BuV) is a newly-identified parvovirus in the family of Parvoviridae. Metagenomic analysis of fecal samples from children in Burkina Faso with acute diarrhea showed a highly divergent parvovirus, which was named bufavirus (BuV). The global distribution, epidemiology and genetic characteristics of BuVs infections are obscure. It was first discovered as an agent causing gastroenteritis but the association of BuV infections with various clinical presentations mostly remain to be explored. The aims of this study were to investigate probable impact of BuV in central nervous system infections in a region where it was previously reported to cause human infections and to detect enteroviruses (EV) which are reported as a cause of central nervous system infections in our country...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28551368/hhv-6-reactivation-as-a-cause-of-fever-in%C3%A2-autologous-hematopoietic-stem-cell-transplant-recipients
#15
M A Colombier, S Amorim, M Salmona, C Thieblemont, J Legoff, M Lafaurie
OBJECTIVES: We report the biological and clinical impacts possibly associated with HHV-6 reactivation in autologous hematopoietic stem cell transplant (AHSCT) recipients after intensive chemotherapy regimen for lymphoma. METHODS: We retrospectively reviewed clinical, biological, radiological, treatment and outcomes of patients with positive HHV-6 DNA in whole blood following autologous hematopoietic stem cell transplantation. RESULTS: Blood HHV-6 reactivation was reported in 27 (8...
May 24, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28545321/virus-detection-by-pcr-following-vaccination-of-naive-calves-with-intranasal-or-injectable-multivalent-modified-live-viral-vaccines
#16
Paul H Walz, Benjamin W Newcomer, Kay P Riddell, Daniel W Scruggs, Victor S Cortese
We evaluated duration of PCR-positive results following administration of modified-live viral (MLV) vaccines to beef calves. Twenty beef calves were randomly assigned to either group 1 and vaccinated intranasally with a MLV vaccine containing bovine alphaherpesvirus 1 (BoHV-1), bovine respiratory syncytial virus (BRSV), and bovine parainfluenza virus 3 (BPIV-3), or to group 2 and vaccinated subcutaneously with a MLV vaccine containing bovine viral diarrhea virus 1 and 2 (BVDV-1, -2), BoHV-1, BRSV, and BPIV-3...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28539533/evaluation-of-control-measures-for-bovine-viral-diarrhea-implemented-in-nemuro-district-hokkaido-japan-using-a-scenario-tree-model
#17
Norikazu Isoda, Akihiro Asano, Michiru Ichijo, Shiho Wakamori, Hiroshi Ohno, Kazuhiko Sato, Hirokazu Okamoto, Shigeru Nakao, Hajime Kato, Kazuma Saito, Naoki Ito, Akira Usui, Hiroaki Takayama, Yoshihiro Sakoda
A scenario tree model was developed to propose efficient bovine viral diarrhea (BVD) control measures. The model used field data in eastern Hokkaido where the risk of BVDV infection in cattle has been reduced by an eradication program including mass vaccination, individual tests prior to communal pasture grazing, herd screening tests using bulk milk, and outbreak investigations of newly infected herds. These four activities were then used as hypothesized control measures in the simulation. In each simulation, the numbers of cattle infected persistently and transiently with BVDV detected by clinical manifestations and diagnosis tests and of missed by all of the diagnosis tests were calculated, and the numbers were used as indicators to be compared for the efficacy of the control measures...
May 25, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28537239/-translational-efficiency-of-bvdv-ires-and-emcv-ires-for-t7-rna-polymerase-driven-cytoplasmic-expression-in-mammalian-cell-lines
#18
F Ghassemi, O Madadgar, F Roohvand, M Rasekhian, M H Etemadzadeh, G R N Boroujeni, A G Langroudi, K Azadmanesh
Mammalian T7 polymerase-based cytoplasmic expression systems are common tool for molecular studies. The majority of these systems include the internal ribosome entry site (IRES) of the encephalomyocarditis virus (EMCV). To carry out a cap-independent translation process, this type of IRES might require the expression of an extensive array of host factors, what is a disadvantage. Other IRESes might be less dependent on the host cell factors, but their biology is characterized to a lesser degree. Here, we compare the translational efficiencies of bovine viral diarrhea virus (BVDV) IRES with that of ECMV...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28536072/characterization-of-astrovirus-associated-gastroenteritis-in-hospitalized-children-under-five-years-of-age
#19
Hassan Zaraket, Hadi Abou-El-Hassan, Khalil Kreidieh, Nadia Soudani, Zainab Ali, Moza Hammadi, Lina Reslan, Soha Ghanem, Farah Hajar, Adlette Inati, Mariam Rajab, Hassan Fakhouri, Bassam Ghanem, Ghassan Baasiri, Nada M Melhem, Ghassan Dbaibo
PURPOSE: The aim of this study was to determine the incidence and genetic diversity of astrovirus (AstV) detected in children hospitalized for gastroenteritis (GE). METHODS: A multi-center, hospital-based surveillance study was conducted across Lebanon to investigate the incidence of AstV among diarrheal hospitalizations. Viral RNA was extracted from stool samples collected between 2011 and 2013 from children, below the age of 5years, hospitalized for GE at six medical centers across Lebanon...
May 20, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28536059/current-state-of-knowledge-on-the-traditional-uses-phytochemistry-and-pharmacology-of-the-genus-hymenaea
#20
REVIEW
Pone Kamdem Boniface, Sabrina Baptista Ferreira, Carlos Roland Kaiser
ETHNOPHARMACOLOGICAL RELEVANCE: Plants of the genus Hymenaea (Fabaceae) are used in South American and Asian traditional medicines to treat a multitude of disorders, like cough, diarrhea, dysentery, intestinal colic, pulmonary weakness, asthma, anemia, sore throat, and for the treatment of kidney problems, viral related disorders, chronic cystitis, bronchitis, and bladder infections. Some Hymenaea species are also used as vermifuge, and for the treatment of arthritis, and inflammation conditions...
May 21, 2017: Journal of Ethnopharmacology
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