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https://www.readbyqxmd.com/read/29158768/acute-pancreatitis-in-hand-foot-and-mouth-disease-caused-by-coxsackievirus-a16-case-report
#1
Byungsung Park, Hyuckjin Kwon, Kwanseop Lee, Minjae Kang
Coxsackievirus A16 (CA16), which primarily causes hand, foot, and mouth disease (HFMD), is associated with complications, such as encephalitis, acute flaccid paralysis, myocarditis, pericarditis, and shock. However, no case of pancreatitis associated with CA16 has been reported in children. We report a case of CA16-associated acute pancreatitis in a 3-year-old girl with HFMD. She was admitted because of poor oral intake and high fever for 1 day. Maculopapular rashes on both hands and feet and multiple vesicles on the soft palate were observed on physical examination...
October 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29158436/pathogenic-role-of-the-damage-associated-molecular-patterns-s100a8-and-s100a9-in-coxsackievirus-b3-induced-myocarditis
#2
Irene Müller, Thomas Vogl, Kathleen Pappritz, Kapka Miteva, Konstantinos Savvatis, David Rohde, Patrick Most, Dirk Lassner, Burkert Pieske, Uwe Kühl, Sophie Van Linthout, Carsten Tschöpe
BACKGROUND: The alarmins S100A8 and S100A9 are damage-associated molecular patterns, which play a pivotal role in cardiovascular diseases, inflammation, and viral infections. We aimed to investigate their role in Coxsackievirus B3 (CVB3)-induced myocarditis. METHODS AND RESULTS: S100A8 and S100A9 mRNA expression was 13.0-fold (P=0.012) and 5.1-fold (P=0.038) higher in endomyocardial biopsies from patients with CVB3-positive myocarditis compared with controls, respectively...
November 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29158420/superoxide-production-by-nadph-oxidase-intensifies-macrophage-antiviral-responses-during-diabetogenic-coxsackievirus-infection
#3
Ashley R Burg, Shaonli Das, Lindsey E Padgett, Zachary E Koenig, Hubert M Tse
Coxsackievirus B infections are suspected environmental triggers of type 1 diabetes (T1D) and macrophage antiviral responses may provide a link to virus-induced T1D. We previously demonstrated an important role for NADPH oxidase (NOX)-derived superoxide production during T1D pathogenesis, as NOX-deficient NOD mice (NOD.Ncf1(m1J) ) were protected against T1D due, in part, to impaired proinflammatory TLR signaling in NOD.Ncf1(m1J) macrophages. Therefore, we hypothesized that loss of NOX-derived superoxide would dampen diabetogenic antiviral macrophage responses and protect from virus-induced diabetes...
November 20, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29151279/detection-of-ctcs-in-cervical-cancer-using-a-conditionally-replicative-adenovirus-targeting-telomerase-positive-cells
#4
Masahiro Takakura, Takeo Matsumoto, Mitsuhiro Nakamura, Yasunari Mizumoto, Subaru Myojyo, Rena Yamazaki, Jyunpei Iwadare, Yukiko Bono, Shunsuke Orisaka, Takeshi Obata, Takashi Izuka, Kyosuke Kagami, Kentaro Nakayama, Hideki Hayakawa, Fuminori Sakurai, Hiroyuki Mizuguchi, Yasuo Urata, Toshiyoshi Fujiwara, Satoru Kyo, Toshiyuki Sasagawa, Hiroshi Fujiwara
Circulating tumor cells (CTCs) are newly discovered biomarkers of cancers. Although many systems detect CTCs, a gold standard has not yet been established. We analyzed CTCs in uterine cervical cancer patients using an advanced version of conditionally replicative adenovirus targeting telomerase-positive cells, which was enabled to infect coxsackievirus-adenovirus receptor-negative cells and to reduce false-positive signals in myeloid cells. Blood samples from cervical cancer patients were hemolyzed and infected with the virus and then labeled with fluorescent anti-CD45 and anti-pan cytokeratin antibodies...
November 19, 2017: Cancer Science
https://www.readbyqxmd.com/read/29151123/a-coxsackievirus-b-vaccine-protects-against-virus-induced-diabetes-in-an-experimental-mouse-model-of-type-1-diabetes
#5
Virginia M Stone, Minna M Hankaniemi, Emma Svedin, Amirbabak Sioofy-Khojine, Sami Oikarinen, Heikki Hyöty, Olli H Laitinen, Vesa P Hytönen, Malin Flodström-Tullberg
AIMS/HYPOTHESIS: Epidemiological studies suggest a role for Coxsackievirus B (CVB) serotypes in the pathogenesis of type 1 diabetes, but their actual contribution remains elusive. In the present study, we have produced a CVB1 vaccine to test whether vaccination against CVBs can prevent virus-induced diabetes in an experimental model. METHODS: NOD and SOCS1-tg mice were vaccinated three times with either a formalin-fixed non-adjuvanted CVB1 vaccine or a buffer control...
November 18, 2017: Diabetologia
https://www.readbyqxmd.com/read/29134337/recombination-analysis-of-coxsackievirus-b5-genogroup-c
#6
Hongxing Shen
Coxsackievirus B5 (CVB5) is a member of the species Enterovirus B of the genus Enterovirus, family Picornaviridae. Based on its VP1 sequence, CVB5 is divided into four genogroups: A, B, C, and D. From 2002 to 2012, CVB5 serotype genogroup C caused an outbreak of aseptic meningitis in China. In order to study the evolution of CVB5 genogroup C, phylogenetic and recombination analysis was performed using the 399 available enterovirus B genome sequences in the GenBank database. The results indicated that 10 strains of CVB5 serotype genogroup C resulted from recombination between members of genogroup B and echovirus serotype E6, and another 5 strains resulted from recombination between members of genogroup C and serotype CVB4...
November 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29129453/hepatitis-b-virus-core-particles-containing-multiple-epitopes-confer-protection-against-enterovirus-71-and-coxsackievirus-a16-infection-in-mice
#7
Chunling Huo, Jie Yang, Lei Lei, Lei Qiao, Jiantao Xin, Zishu Pan
Human enterovirus 71 (EV71) and coxsackievirus A16 (CA16) are the two major causative agents of hand-foot-and-mouth disease (HFMD). To investigate novel combined vaccines to prevent EV71 and CA16 infection, we constructed chimeric virus-like particles (tHBc/SPA or tHBc/SP VLPs) displaying conserved epitopes of EV71 (aa 208-222 of VP1 and aa 248-263 of VP2) and CA16 (aa271-285 of VP1) using a truncated hepatitis B virus core carrier (tHBc). Immunization with the chimeric VLPs induced epitope- or virus-specific IgG and neutralization antibodies against EV71 and CA16 in the mice...
November 9, 2017: Vaccine
https://www.readbyqxmd.com/read/29122092/rapid-and-accurate-sequencing-of-enterovirus-genomes-using-minion-nanopore-sequencer
#8
Ji Wang, Yue Hua Ke, Yong Zhang, Ke Qiang Huang, Lei Wang, Xin Xin Shen, Xiao Ping Dong, Wen Bo Xu, Xue Jun Ma
OBJECTIVE: Knowledge of an enterovirus genome sequence is very important in epidemiological investigation to identify transmission patterns and ascertain the extent of an outbreak. The MinION sequencer is increasingly used to sequence various viral pathogens in many clinical situations because of its long reads, portability, real-time accessibility of sequenced data, and very low initial costs. However, information is lacking on MinION sequencing of enterovirus genomes. METHODS: In this proof-of-concept study using Enterovirus 71 (EV71) and Coxsackievirus A16 (CA16) strains as examples, we established an amplicon-based whole genome sequencing method using MinION...
October 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/29108785/semaphorin7a-aggravates-coxsackievirusb3-induced-viral-myocarditis-by-increasing-%C3%AE-1%C3%AE-1-integrin-macrophages-and-subsequent-enhanced-inflammatory-response
#9
Xuejie Wu, Yawen Meng, Chao Wang, Yan Yue, Chunsheng Dong, Sidong Xiong
Semaphorin7A (Sema7A) has been reported to play various roles in nerve axon growth, tumor suppression, and tissue remodeling, as well as regulation of intestinal inflammation diseases. Viral myocarditis (VMC) characterized by viral-myocardial-cell necrosis and inflammatory cell infiltration is a common clinical disease of the cardiovascular system. However, the role of Sema7A in coxsackievirus B3 (CVB3)-induced VMC has not been reported. In this study, we generated an acute VMC mouse model by CVB3 infection, and manipulated Sema7A expression by in vivo polyethyleneimine-mediated Sema7A down-regulation...
November 3, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29095779/onychomadesis-as-a-late-complication-of-hand-foot-mouth-disease-a-case-series-shedding-light-on-nail-shedding
#10
Nicholas A Kuehnel, Sokunthirith Thach, Danny G Thomas
Hand-foot-mouth disease is a viral illness frequently caused by enterovirus and coxsackievirus. Traditionally, this disease initially causes malaise, fever, and rash with vesicles in the mouth, as well as on the hands and feet. Occasionally, more severe presentations and late postinfectious sequelae occur, including onychomadesis, nail matrix arrest. We describe a series of 4 cases of onychomadesis and its evaluation following recent hand-foot-mouth disease during this current enteroviral season as a way to ensure appropriate clinician diagnosis and guidance...
November 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29093091/a-3-0-angstrom-resolution-cryo-electron-microscopy-structure-and-antigenic-sites-of-coxsackievirus-a6-like-particles
#11
Jinhuan Chen, Chao Zhang, Yu Zhou, Xiang Zhang, Chaoyun Shen, Xiaohua Ye, Wen Jiang, Zhong Huang, Yao Cong
Coxsackievirus A6 (CVA6) has recently emerged as one of the predominant causative agents of hand, foot, and mouth disease (HFMD). Structure of CVA6 mature viral particle has not been solved thus far. Our previous work shows that recombinant virus-like particles (VLPs) of CVA6 represent a promising CVA6 vaccine candidate. Here, we report the first cryo-electron microscopy (cryo-EM) structure of CVA6 VLP at 3.0 Å resolution. CVA6 VLP exhibits the characteristic features of enteroviruses, but presents an open channel at the two-fold axis and an empty, collapsed VP1 pocket, which is broadly similar to the structures of enterovirus 71 (EV71) VLP and coxsackievirus A16 (CVA16) 135S expanded particle, indicating that CVA6 VLP is in an expanded conformation...
November 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29076073/dense-granule-protein-7-gra-7-of-toxoplasma-gondii-inhibits-viral-replication-in-vitro-and-in-vivo
#12
Prasanna Weeratunga, Thilina U B Herath, Tae-Hwan Kim, Hyun-Cheol Lee, Jae-Hoon Kim, Byeong-Hoon Lee, Eun-Seo Lee, Kiramage Chathuranga, W A Gayan Chathuranga, Chul-Su Yang, Jin Yeul Ma, Jong-Soo Lee
Dense granule protein-7 (GRA-7) is an excretory protein of Toxoplasma gondii. It is a potential serodiagnostic marker and vaccine candidate for toxoplasmosis. Previous reports demonstrated that GRA-7 induces innate immune responses in macrophages by interacting with TRAF6 via the MyD88-dependent pathway. In the present study, we evaluated the antiviral activity and induction of an antiviral state by GRA-7 both in vitro and in vivo. It was observed that GRA-7 markedly reduced the replication of vesicular stomatitis virus (VSV-GFP), influenza A virus (PR8-GFP), coxsackievirus (H3-GFP), herpes simplex virus (HSV-GFP), and adenovirus-GFP in epithelial (HEK293T/HeLa) and immune (RAW264...
November 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/29073897/a-comparative-study-of-multiple-clinical-enterovirus-71-isolates-and-evaluation-of-cross-protection-of-inactivated-vaccine-strain-fy-23%C3%A2-k-b-in-vitro
#13
Ting Yang, Hua Li, Lei Yue, Xia Song, Tianhong Xie, Shaohui Ma, Huaqing Meng, Ye Zhang, Xin He, Runxiang Long, Rong Yang, Fangyu Luo, Zhongping Xie, Qihan Li
BACKGROUND: Enterovirus 71 (EV71) is one of the causative agents of hand, foot and mouth disease, which mostly affects infants and children and leads to severe neurological diseases. Vaccination offers the best option for disease control. We have screened the virus strain FY-23 K-B, which is used as an inactivated vaccine strain. An important issue in the development of vaccines is whether they provide cross protection against all other strains. METHODS: We collected and identified 19 clinical EV71 isolates from mainland China, which all belong to the C4 genotype...
October 26, 2017: Virology Journal
https://www.readbyqxmd.com/read/29052054/suppression-of-the-toll-like-receptor-7-dependent-type-i-interferon-production-pathway-by-autophagy-resulting-from-enterovirus-71-and-coxsackievirus-a16-infections-facilitates-their-replication
#14
Jie Song, Yajie Hu, Jiaqi Li, Huiwen Zheng, Jingjing Wang, Lei Guo, Haijng Shi, Longding Liu
Toll-like receptors (TLRs) act as molecular sentinels, detecting invading viral pathogens and triggering host innate immune responses, including autophagy. However, many viruses have evolved a series of strategies to manipulate autophagy for their own benefit. Enterovirus 71 (EV71) and coxsackievirus A16 (CA16), as the primary agents causing hand, foot and mouth disease (HFMD), can induce autophagy leading to their replication. Therefore, the objective of this study was to investigate whether enhanced viral replication caused by autophagy in EV71 and CA16 infections was associated with a TLR-related signaling pathway...
October 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29049009/seroepidemiology-of-coxsackievirus-b5-in-infants-and-children-in-jiangsu-province-china
#15
Fan Gao, Lianlian Bian, Xiaotian Hao, Yalin Hu, Xin Yao, Shiyang Sun, Pan Chen, Ce Yang, Ruixiao Du, Jingxin Li, Fengcai Zhu, Qunying Mao, Zhenglun Liang
Coxsackievirus B5 (CV-B5) is associated with various human diseases such as viral encephalitis, aseptic meningitis, paralysis, herpangina, and hand, foot and mouth disease (HFMD). However, there is currently no effective vaccine against CV-B5.The seroepidemiologic characteristics of CV-B5 remained unknown. A cohort study was carried out in 176 participants aged 6-35 months from January 2012 to January 2014. The serum samples were collected and tested for CV-B5 neutralizing antibodies (NtAbs) four times during these two years...
October 19, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29045829/escaping-host-factor-pi4kb-inhibition-enterovirus-genomic-rna-replication-in-the-absence-of-replication-organelles
#16
Charlotte E Melia, Hilde M van der Schaar, Heyrhyoung Lyoo, Ronald W A L Limpens, Qian Feng, Maryam Wahedi, Gijs J Overheul, Ronald P van Rij, Eric J Snijder, Abraham J Koster, Montserrat Bárcena, Frank J M van Kuppeveld
Enteroviruses reorganize cellular endomembranes into replication organelles (ROs) for genome replication. Although enterovirus replication depends on phosphatidylinositol 4-kinase type IIIβ (PI4KB), its role, and that of its product, phosphatidylinositol 4-phosphate (PI4P), is only partially understood. Exploiting a mutant coxsackievirus resistant to PI4KB inhibition, we show that PI4KB activity has distinct functions both in proteolytic processing of the viral polyprotein and in RO biogenesis. The escape mutation rectifies a proteolytic processing defect imposed by PI4KB inhibition, pointing to a possible escape mechanism...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29043768/infection-of-ipsc-lines-with-miscarriage-associated-coxsackievirus-and-measles-virus-and-teratogenic-rubella-virus-as-a-model-for-viral-impairment-of-early-human-embryogenesis
#17
Denise Hübner, Kristin Jahn, Sandra Pinkert, Janik Böhnke, Matthias Jung, Henry Fechner, Dan Rujescu, Uwe Gerd Liebert, Claudia Claus
Human induced pluripotent stem cell (iPSC) lines are a promising model for the early phase of human embryonic development. Here, their contribution to the still incompletely understood pathogenesis of congenital virus infections was evaluated. The infection of iPSC lines with miscarriage-associated coxsackievirus B3 (CVB3) and measles virus (MV) was compared to the efficient teratogen rubella virus (RV). While CVB3 and MV were found to be cytopathogenic on iPSC lines, RV replicated without impairment of iPSC colony morphology and integrity...
October 26, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29043433/mcpip1-inhibits-coxsackievirus-b3-replication-by-targeting-viral-rna-and-negatively-regulates-virus-induced-inflammation
#18
Min Li, Kepeng Yan, Lin Wei, Yang Yang, Qian Qian, Wei Xu
Monocyte chemotactic protein-induced protein 1(MCPIP1) is identified as an important inflammatory regulator during immune response. MCPIP1 possesses antiviral activities against several viruses, such as Japanese encephalitis. However, its role on Coxsackievirus B3 (CVB3) infection, a positive-stranded RNA virus, has not been addressed. Here, we reported that MCPIP1 was up-regulated in cardiomyocytes by CVB3 infection and in hearts and pancreas of infected mice. Then we found that overexpression of MCPIP1 inhibited CVB3 replication and knockdown of it promoted virus replication...
October 17, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29032641/cholic-acid-attenuate-er-stress-induced-cell-death-in-coxsackievirus-b3-infection
#19
Jae-Young Han, Hae In Jeong, Cheol-Woo Park, Jisoo Yoon, Jaeyoung Ko, Sang-Jip Nam, Byung-Kwan Lim
Coxsackievirus Type B3 (CVB3) is an enterovirus that belongs to the Picornaviridae and causes of various diseases such as myocarditis and hand-foot-mouth diseases. But effective antiviral drug was still not developed. In this study, we looking for potential inhibitors of CVB3 replication by examining survival of CVB3-infected HeLa cells. We detected an antiviral effect of cholic acid and identified it as a candidate inhibitor of CVB3 replication. Cholic acid circulates in the liver and intestines, and it helps digestion and absorption of lipids in small intestine...
October 14, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29025948/genome-sequences-of-coxsackievirus-b5-isolates-from-two-children-with-meningitis-in-australia
#20
Bixing Huang, Bruce Harrower, Peter Burtonclay, Tanya Constantino, David Warrilow
Two coxsackievirus B5 (CVB5) strains were isolated from two children with aseptic meningitis in Australia. Their genomes were sequenced and found to be divergent from the previously reported CVB5 genome sequences, with both having 84% and 97% identities to the closest strains at the nucleotide and amino acid levels, respectively.
October 12, 2017: Genome Announcements
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