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Na Jiang, Lei Shi, Jieping Lin, Lifang Zhang, Yanxia Peng, Huiying Sheng, Ping Wu, Qingjun Pan
BACKGROUND: Rotavirus (RV) and enteric adenovirus (AdV) mainly cause infantile infectious gastroenteritis. Several separate test methods for the detection of RV or AdV are currently available, but few tests are able to simultaneously detect both RV and AdV viruses, especially in primary medical institutions. METHODS: The present study was mainly designed to compare the performance of two combined test strips for the detection of RV and AdV: a rotavirus-adenovirus strip with fluorescent microspheres for tracers (FMT); and the CerTest rotavirus-adenovirus blister strip with colored microspheres for tracers (CMT)...
March 13, 2018: Virology Journal
Wenbiao Wang, Feng Xiao, Pin Wan, Pan Pan, Yecheng Zhang, Fang Liu, Kailang Wu, Yingle Liu, Jianguo Wu
[This corrects the article DOI: 10.1371/journal.ppat.1006123.].
March 2018: PLoS Pathogens
T Xu, Z Lin, C H Wang, Y Li, M Zhao, L Hua, B Zhu
There is still no effective clinical antiviral drug against human enterovirus 71 (EV71) infection, which causes hand, foot and mouth disease (HFMD) in children. Scavenger receptor class B member 2 (SCARB2) is an important receptor of EV71 as it plays a vital role in the early steps of viral infection. In this study, recombinant SCARB2 protein was expressed and purified in a prokaryotic expression system, and was identified by western blot with a monoclonal antibody and mass spectrometry analysis. Detection of the sera from mice immunized with the recombinant SCARB2 protein using ELISA and western blot showed good immunogenicity of the recombinant protein...
2018: Acta Virologica
Xiang-Jie Yao, Long Chen, Hong Yang, Jun Meng, Hai-Long Zhang, Min Jiang, Hong-Yu Zhang, Ya-Qing He, Chun-Li Wu, Ren-Li Zhang
The whole-genome sequence of an enterovirus A71 strain (EV71/SHENZHEN001/2006) isolated in 2006 from a patient with a fatal case of enterovirus infection was determined. Phylogenetic analysis based on the complete VP1 gene classified this strain as subgenotype C4a.
March 8, 2018: Genome Announcements
Yuemei Hu, Gang Zeng, Kai Chu, Jing Zhang, Weixiao Han, Ying Zhang, Jing Li, Fengcai Zhu
The longevity of antibodies induced by inactivated enterovirus 71 type (EV71) vaccine is not well studied. To estimate the immunity persistence following two-dose vaccination of EV71 vaccine, a five-year follow-up study was conducted as an extension of a Phase III clinical trial. In this study, a sub-cohort of volunteers who was eligible for enrollment and randomly administrated either 2 dose EV71 vaccine or placebo in the phase III clinical trial was selected, and then further observed 64 months post the 1st vaccination...
February 26, 2018: Human Vaccines & Immunotherapeutics
Ming-Hong Yen, Ching-I Huang, Min-Sheng Lee, Ya-Ping Cheng, Chia Jung Hsieh, Lien-Chai Chiang, Jung-San Chang
Artemisia capillaris (A. capillaris) is a common herbal drug used for thousands years in ancient China. A. capillaris has been empirically used to manage hand-foot-mouth disease (HFMD), which is commonly caused by enterovirus 71 (EV71). EV71 can cause meningoencephalitis with mortality and neurologic sequelae without effective management. It is presently unknown whether A. capillaris is effective against EV71 infection. To test the hypothesis that it could protect cells from EV71-induced injury, a hot water extract of A...
March 2018: Kaohsiung Journal of Medical Sciences
Chunhua Wang, Shuaifeng Zhou, Wanhua Xue, Liang Shen, Wei Huang, Yi Zhang, Xuguang Li, Junzhi Wang, Hong Zhang, Xuejun Ma
The management of hand-foot-and-mouth disease(HFMD) epidemic is difficult due to the frequent emergence of non-EV71 and non-CVA16 enteroviruses and some cases testing negative for HFMD-associated causative agents. To clarify the virus spectrum of mild and severe HFMD, a comprehensive virome analysis of 238 samples was performed using next-generation sequencing (NGS). The data revealed total thirteen mammalian- and plant- virus families and diverse viral populations including enteroviruses, common respiratory viruses, diarrhea-related viruses, plant viruses and anelloviruses...
February 19, 2018: Virology
Qiao-Qiao He, Sheng Ren, Zhang-Chuan Xia, Zhi-Kui Cheng, Nan-Fang Peng, Ying Zhu
Fibronectin (FN) is a high molecular weight extracellular matrix protein that contains RGDS motif, which is required to bind to integrins. Synthetic RGDS peptides have been reported to compete with FN to bind to the cell surface and inhibit the function of FN. Here, we identified that synthetic RGDS peptides significantly inhibit human enterovirus 71 (EV71) infection in cell cultures. In addition, mice treated with RGDS peptides and infected with EV71 had a significantly higher survival rate and a lower viral load than the control group...
February 21, 2018: Journal of Virology
Xihan Li, Ying Huang, Menghuai Sun, Hong Ji, Hui Dou, Jia Hu, Yanfeng Yan, Xu Wang, Leiyao Chen
Enterovirus 71 (EV71) is the primary pathogen of hand-foot-and-mouth disease (HFMD) in children and virus infections are associated with severe neurological dysfunctions and even death. MIR2911 is a honeysuckle-encoded atypical microRNA with extremely stability. Here, we report that MIR2911 directly inhibits EV71 replication by targeting the VP1 gene. Bioinformatics prediction and luciferase reporter assay showed that MIR2911 could target the VP1 gene of EV71. Transfection experiments using synthetic MIR2911 and extracted RNA from HS decoction shown that each of these preparations was capable of inhibiting EV71 VP1 protein expression; however, these preparations did not impact EV71 mutants in which the MIR2911-binding sites were mutated...
February 16, 2018: Antiviral Research
Jie Song, Yajie Hu, Xi Jiang, Wenbing Zhu, Zhongxiang Wu, Shaozhong Dong
Enterovirus 71 (EV71) and coxsackievirus A16 (CA16) are two major etiologic agents associated with hand, foot, and mouth disease (HFMD) worldwide. Despite that they both belong to the Enterovirus genus of the Picornaviridae family, there are many differences in the infection process of these viruses. However, the underlying mechanisms have not been elucidated. Multiple studies indicated that microRNAs (miRNAs) can play critical roles in the host-pathogen interaction. Our previous study reported that EV71 and CA16 infection leads to differential expression of miRNAs in human bronchial epithelial (16HBE) cells...
February 12, 2018: Virus Research
Yan Wang, Ying Qin, Tianying Wang, Yang Chen, Xiujuan Lang, Jia Zheng, Shuoyang Gao, Sijia Chen, Xiaoyan Zhong, Yusong Mu, Xiaoyu Wu, Fengming Zhang, Wenran Zhao, Zhaohua Zhong
Enterovirus 71 (EV71) is the primary causative pathogen of hand, foot, and mouth disease (HFMD), affecting children with severe neurological complications. Pyroptosis is a programmed cell death characterized by cell lysis and inflammatory response. Although proinflammatory response has been implicated to play important roles in EV71-caused diseases, the involvement of pyroptosis in the pathogenesis of EV71 is poorly defined. We show that EV71 infection induced caspase-1 activation. Responding to the activation of caspase-1, the expression and secretion of both IL-1β and IL-18 were increased in EV71-infected cells...
February 13, 2018: Scientific Reports
Teng-Fei Yan, Xin-Na Li, Le Wang, Chen Chen, Su-Xia Duan, Ju-Ju Qi, Li-Xin Li, Xue-Jun Ma
Hand, foot and mouth disease (HFMD) is a serious public health problem, and coxsackievirus A6 (CVA6) and coxsackievirus A10 (CVA10) are two of the major causative pathogens, in addition to enterovirus 71 (EV71) and coxsackievirus A16 (CVA16). A simple and rapid reverse transcription recombinase-aided amplification assay (RT-RAA) was developed for the detection of CVA10 and CVA6 in this study. The analytical sensitivity for detection of CVA10 and CVA6 at 95% probability by probit regression analysis was 35 copies per reaction and 38 copies per reaction, respectively, with 100% specificity...
February 10, 2018: Archives of Virology
Qian Zhang, Binbin Zhao, Xin Chen, Nan Song, Jing Wu, Guangchao Li, Pin Yu, Yunlin Han, Jiangning Liu, Chuan Qin
Human enterovirus 71 (EV71) is the second most common cause of hand, foot, and mouth disease (HFMD), which can occur as a severe epidemic especially among children under 5-years old. New and improved treatment strategies to control EV71 infection are therefore urgently required. The heterocyclic compound GS-9620, a potent and selective agonist of Toll-like receptor 7 (TLR7), has been reported to activate plasmacytoid dendritic cells (pDCs), and suppress HBV as well as HIV replication. In this study, we indicated that GS-9620 also could inhibit EV71 replication in the mouse model of EV71 infection...
February 6, 2018: Antiviral Research
Xiaodan Yang, Zhulong Hu, Shanshan Fan, Qiang Zhang, Yi Zhong, Dong Guo, Yali Qin, Mingzhou Chen
Stress granules (SGs) contain stalled messenger ribonucleoprotein complexes and are related to the regulation of mRNA translation. Picornavirus infection can interfere with the formation of SGs. However, the detailed molecular mechanisms and functions of picornavirus-mediated regulation of SG formation are not clear. Here, we found that the 2A protease of a picornavirus, EV71, induced atypical stress granule (aSG), but not typical stress granule (tSG), formation via cleavage of eIF4GI. Furthermore, 2A was required and sufficient to inhibit tSGs induced by EV71 infection, sodium arsenite, or heat shock...
February 7, 2018: PLoS Pathogens
Yedan Liu, Peipei Liu, Shihai Liu, Ya Guo, Hongfang He, Chengqing Yang, Jie Song, Na Zhang, Jianguo Cheng, Zongbo Chen
BACKGROUND: Oligoadenylate synthetase 3 (OAS3) is interferon-induced antiviral enzyme, playing a significant role in the innate immune response. Genetic polymorphism in OAS3 gene has been reported to be a susceptibility factor in many infected diseases, but evidence of its effect on enterovirus 71 (EV71) infection is still lacking. OBJECTIVES: An attempt study was made to investigate whether genetic polymorphism of OAS3 S381R is associated with the severity of EV71 infection in Chinese children...
January 30, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Li Qi, Wenge Tang, Han Zhao, Hua Ling, Kun Su, Hua Zhao, Qin Li, Tao Shen
(1) Objective: Even with licensed vaccine for enterovirus 71 (EV71) put into market in 2016 in China, hand, foot, and mouth disease (HFMD) is still a threat for children's health in Chongqing. We described the epidemiological characteristics and spatial-temporal patterns of HFMD in Chongqing from 2009 to 2016, in order to provide information and evidence for guiding public health response and intervention. (2) Methods: We retrieved the HFMD surveillance data from January 2009 to December 2016 from "National Disease Reporting Information System", and then analyzed demographic and geographical information integrally...
February 5, 2018: International Journal of Environmental Research and Public Health
Min-Yuan Chia, Wan-Yu Chung, Chun-Hsiung Wang, Wei-Hau Chang, Min-Shi Lee
Although Enterovirus 71 (EV71) has only one serotype based on serum neutralization tests using hyperimmune animal antisera, three major genogroups (A, B and C) including eleven genotypes (A, B1-B2, and C1-C5) can be well classified based on phylogenetic analysis. Since 1997, large-scale EV71 epidemics occurred cyclically with different genotypes in the Asia-Pacific region. Therefore, development of EV71 vaccines is a national priority in several Asian countries. Currently, five vaccine candidates have been evaluated in clinical trials in China (three C4 candidates), Singapore (one B2 candidate), and Taiwan (one B4 candidate)...
February 2, 2018: Vaccine
Jinling Liu, Shuxian Li, Chunyan Cai, Yingchun Xu, Yuan Jiang, Zhimin Chen
Enterovirus 71 (EV71) is a major pathogen that causes hand, foot and mouth disease (HFMD) as well as neurological complications, such as encephalitis. The chemokines involved in the migration of leukocytes have increasingly been implicated in infectious diseases of the central nervous system. Few studies have evaluated the levels of chemokines in HMFD children with EV71-related encephalitis. In the present study, we evaluated the cerebrospinal fluid (CSF) levels of the chemokines IL-8, RANTES, MIG, MCP-1 and IP-10 in 99 children with EV71-related encephalitis and 22 children with febrile convulsion (FC)...
January 26, 2018: Scientific Reports
Qiong Li, Feng-Ming Wang, Xu-Jian Mao, Ping Yao, Xia Jiang, Jing-Yi Jiang, Cong Chen, Fei-Fei Hu, Jun-Hong Li
The full-length genome sequence of a human enterovirus 71 (EV71) strain (EV71/CZTN01/CHN/2017) was isolated from a throat swab from a child in Changzhou, China, in 2017. According to the phylogenetic analyses, the full-genome sequence in this study belongs to sub-subgenotype C4a.
January 25, 2018: Genome Announcements
Hsing-I Huang, Chi-Chong Chio, Jhao-Yin Lin
EV71 is a positive-sense single-stranded RNA virus that belongs to the Picornaviridae family. EV71 infection may cause various symptoms ranging from hand-foot-and-mouth disease to neurological pathological conditions such as aseptic meningitis, ataxia, and acute transverse myelitis. There is currently no effective treatment or vaccine available. Various compounds have been examined for their ability to restrict EV71 replication. However, most experiments have been performed in rhabdomyosarcoma or Vero cells...
2018: PloS One
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