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Fu Y, Zhang L, Zhang R, Xu S, Wang H, Jin Y, Wu Z. Enterovirus 71 Suppresses miR-17-92 Cluster Through Up-Regulating Methylation of the miRNA Promoter. Front Microbiol 2019; 10:625. [PMID: 30984146 PMCID: PMC6447709 DOI: 10.3389/fmicb.2019.00625] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 03/12/2019] [Indexed: 11/13/2022] Open
Abstract
Enterovirus 71 (EV71), the etiological agent of hand-foot-and-mouth disease, has become an increasing public health challenge worldwide. Accumulating evidence suggests that mammalian microRNAs (miRNAs), a class of non-coding RNAs of 18 to 24 nucleotides (nt) with important regulatory roles in cellular processes, participate in host antiviral defense and studies have suggested roles of miRNAs in EV71 replication and pathogenesis. In the current study, we reported that the expression of hsa-miR-17∼92 cluster was significantly downregulated during EV71 infection. Overexpression of hsa-miR-17∼92 inhibited, while inhibition of endogenous hsa-miR-17∼92 facilitated EV71 replication. We identified two sequences located at nt 3024 to 3038 and nt 2838 to 2862 of the EV71 (strain FY0805) genome as potential targets for hsa-miR-17-5p and miR-19a/b, respectively, which were validated by luciferase reporter assays and Western blot. Meanwhile, we identified DNA methylation as a novel mechanism of hsa-miR-17∼92 regulatory roles. The methylation of the miR-17-92 promoter was significantly increased (50%) upon EV71 infection, which appeared to be caused by the increased expression of DNMT3B but not DNMT1 and DNMT3A. Furthermore, we demonstrated that the members of miR-17-92 cluster were decreased in the sera of EV71 infected patients, suggesting the clinical implication and the potential therapeutic application of miR-17-92.
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Affiliation(s)
- Yuxuan Fu
- School of Life Sciences, Ningxia University, Yinchuan, China.,Center for Public Health Research, Medical School of Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Li Zhang
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Rui Zhang
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Shijie Xu
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Huanru Wang
- Center for Public Health Research, Medical School of Nanjing University, Nanjing, China
| | - Yu Jin
- Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - Zhiwei Wu
- School of Life Sciences, Ningxia University, Yinchuan, China.,Center for Public Health Research, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Analytical Chemistry for Life Sciences, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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102
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Yee PTI, Tan SH, Ong KC, Tan KO, Wong KT, Hassan SS, Poh CL. Development of live attenuated Enterovirus 71 vaccine strains that confer protection against lethal challenge in mice. Sci Rep 2019; 9:4805. [PMID: 30886246 PMCID: PMC6423319 DOI: 10.1038/s41598-019-41285-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 02/27/2019] [Indexed: 12/12/2022] Open
Abstract
Besides causing mild hand, foot and mouth infections, Enterovirus A71 (EV-A71) is associated with neurological complications and fatality. With concerns about rising EV-A71 virulence, there is an urgency for more effective vaccines. The live attenuated vaccine (LAV) is a more valuable vaccine as it can elicit both humoral and cellular immune responses. A miRNA-based vaccine strain (pIY) carrying let-7a and miR-124a target genes in the EV-A71 genome which has a partial deletion in the 5′NTR (∆11 bp) and G64R mutation (3Dp°l) was designed. The viral RNA copy number and viral titers of the pIY strain were significantly lower in SHSY-5Y cells that expressed both let-7a and miR-124a. Inhibition of the cognate miRNAs expressed in RD and SHSY-5Y cells demonstrated de-repression of viral mRNA translation. A previously constructed multiply mutated strain, MMS and the pIY vaccine strain were assessed in their ability to protect 4-week old mice from hind limb paralysis. The MMS showed higher amounts of IFN-γ ex vivo than the pIY vaccine strain. There was absence of EV-A71 antigen in the skeletal muscles and spinal cord micrographs of mice vaccinated with the MMS and pIY strains. The MMS and pIY strains are promising LAV candidates developed against severe EV-A71 infections.
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Affiliation(s)
- Pinn Tsin Isabel Yee
- Centre for Virus and Vaccine Research, School of Science and Technology, Sunway University, Bandar Sunway, Selangor, 47500, Malaysia
| | - Soon Hao Tan
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Jalan University, 50603, Kuala Lumpur, Selangor, Malaysia
| | - Kien Chai Ong
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, Jalan University, 50603, Kuala Lumpur, Selangor, Malaysia
| | - Kuan Onn Tan
- Department of Biological Sciences, School of Science and Technology, Sunway University, Kuala Lumpur, Selangor, 47500, Malaysia
| | - Kum Thong Wong
- Department of Pathology, Faculty of Medicine, University of Malaya, Jalan University, 50603, Kuala Lumpur, Selangor, Malaysia
| | - Sharifah Syed Hassan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500, Subang Jaya, Malaysia
| | - Chit Laa Poh
- Centre for Virus and Vaccine Research, School of Science and Technology, Sunway University, Bandar Sunway, Selangor, 47500, Malaysia.
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103
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Zhang Q, Zhou M, Yang Y, You E, Wu J, Zhang W, Jin J, Huang F. Short-term effects of extreme meteorological factors on childhood hand, foot, and mouth disease reinfection in Hefei, China: A distributed lag non-linear analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:839-848. [PMID: 30759610 DOI: 10.1016/j.scitotenv.2018.10.349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 10/04/2018] [Accepted: 10/26/2018] [Indexed: 05/04/2023]
Abstract
BACKGROUND Hand, foot, and mouth disease (HFMD) is a major public health issue in China with a high burden of reinfection. Previous studies presented evidence of the relationship between meteorological factors and HFMD incidence, but no study examined the effects of extreme meteorological factors on HFMD reinfection. METHODS Daily HFMD reinfection counts and meteorological data of Hefei city were collected from 2011 to 2016. A distributed lag non-linear model was used to quantify the effects of extreme weather (wind speed, sunshine duration, and precipitation) on HFMD reinfection. All effects were presented as relative risk (RR), with 90th or 10th percentiles of meteorological variables compare with their median values. Confounding factors, such as mean temperature, relative humidity, day of week, and long-term trend were controlled. RESULTS A total of 4873 HFMD reinfection cases aged 0-11 years were reported. Extremely high precipitation, low wind speed, and low sunshine duration increased HFMD reinfection risk. The effect of extremely high precipitation was greatest at 8 days lag (RR = 1.01, 95%CI: 1.00-1.02). Extremely low wind speed and low sunshine increased 19% (RR = 1.19, 95%CI: 1.09-1.32) and 12% (RR = 1.12, 95%CI: 1.00-1.26) risk at lag 0-12 days, respectively. By contrast, extremely high wind speed and high sunshine duration exerted certain protective effects on HFMD reinfection at lag 0-12 days (RR = 0.76, 95%CI: 0.66-0.88; RR = 0.88, 95%CI: 0.79-0.99, respectively). Subgroup analyses showed that nursery children were the most sensitive people to the extreme wind speed and sunshine duration. Children aged 4-11 years appeared to be more susceptible to extreme sunshine duration than children aged <3 years. CONCLUSION The present study provides evidence that extreme meteorological factors exert delayed effects on HFMD reinfection. Developing an early warning system is necessary for the protection of children from harm due to extreme meteorological factors.
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Affiliation(s)
- Qian Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China
| | - Mengmeng Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China
| | - Yuwei Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China
| | - Enqing You
- Hefei Center for Disease Control and Prevention, 86 Luan Road, Luyang District, Hefei, Anhui 230061, China
| | - Jinju Wu
- Hefei Center for Disease Control and Prevention, 86 Luan Road, Luyang District, Hefei, Anhui 230061, China
| | - Wenyan Zhang
- Hefei Center for Disease Control and Prevention, 86 Luan Road, Luyang District, Hefei, Anhui 230061, China
| | - Jing Jin
- Hefei Center for Disease Control and Prevention, 86 Luan Road, Luyang District, Hefei, Anhui 230061, China
| | - Fen Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China; Central Laboratory of Preventive Medicine, School of Public Health, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China; Laboratory for environmental Toxicology, Anhui Medical University, 81 Meishan Road, Shushan District, Hefei, Anhui 230032, China.
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104
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Ma Y, Cong W, Huang H, Sun L, Mai AH, Boonen K, Maryam W, De Borggraeve W, Luo G, Liu Q, Schoofs L, Van Kuppeveld F, Neyts J, Mirabelli C, Luyten W. Identification of fukinolic acid from Cimicifuga heracleifolia and its derivatives as novel antiviral compounds against enterovirus A71 infection. Int J Antimicrob Agents 2019; 53:128-136. [PMID: 30063999 DOI: 10.1016/j.ijantimicag.2018.07.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 06/17/2018] [Accepted: 07/14/2018] [Indexed: 01/07/2023]
Abstract
Human enterovirus 71 (EV-A71) infections cause a wide array of diseases ranging from diarrhoea and rashes to hand-foot-and-mouth disease and, in rare cases, severe neurological disorders. No specific antiviral drug therapy is currently available. Extracts from 75 Chinese medicinal plants selected for antiviral activity based on the Chinese pharmacopeia and advice from traditional Chinese medicine clinicians were tested for activity against EV-A71. The aqueous extract of the rhizome of Cimicifuga heracleifolia (Sheng Ma) and Arnebia euchroma (Zi Cao) showed potent antiviral activity. The active fractions were isolated by bioassay-guided purification, and identified by a combination of high-resolution mass spectrometry and nuclear magnetic resonance. Fukinolic acid and cimicifugic acid A and J, were identified as active anti-EV-A71 compounds for C. heracleifolia, whereas for A. euchroma, two caffeic acid derivatives were tentatively deduced. Commercially available fukinolic acid analogues such as L-chicoric acid and D-chicoric also showed in vitro micromolar activity against EV-A71 lab-strain and clinical isolates.
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Affiliation(s)
- Yipeng Ma
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Belgium; Laboratory of Animal Physiology and Neurobiology, Department of Biology, KU Leuven, Belgium
| | - Wenjuan Cong
- Wolfson Wohl Cancer Research Centre, University of Glasgow, Scotland, UK
| | - Hao Huang
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Liang Sun
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Anh Hung Mai
- R&D Department, PolymerExpert,1 Allée du Doyen Georges Brus, Pessac, France
| | - Kurt Boonen
- Laboratory of Animal Physiology and Neurobiology, Department of Biology, KU Leuven, Belgium
| | - Wahedi Maryam
- Departement of infection and immunology, University of Utrecht, the Netherlands
| | - Wim De Borggraeve
- Molecular Design and Synthesis unit, Chemistry department, KU Leuven, Belgium
| | - Guoan Luo
- Department of Chemistry, Tsinghua University, Beijing, China
| | - Qingfei Liu
- School of Medicine, Tsinghua University, Beijing, China
| | - Liliane Schoofs
- Laboratory of Animal Physiology and Neurobiology, Department of Biology, KU Leuven, Belgium
| | - Frank Van Kuppeveld
- Departement of infection and immunology, University of Utrecht, the Netherlands
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Carmen Mirabelli
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Walter Luyten
- Laboratory of Animal Physiology and Neurobiology, Department of Biology, KU Leuven, Belgium.
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105
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Yu G, Li Y, Cai J, Yu D, Tang J, Zhai W, Wei Y, Chen S, Chen Q, Qin J. Short-term effects of meteorological factors and air pollution on childhood hand-foot-mouth disease in Guilin, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:460-470. [PMID: 30056233 DOI: 10.1016/j.scitotenv.2018.07.329] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/14/2018] [Accepted: 07/23/2018] [Indexed: 05/04/2023]
Abstract
BACKGROUND Previous studies have always focused on the impact of various meteorological factors on Hand-foot-mouth disease (HFMD). However, only few studies have investigated the simultaneous effects of climate and air pollution on HFMD incidence. METHODS Daily HFMD counts among children aged 0-14 years in Guilin city were collected from 2014 to 2016. Distributed lag nonlinear models (DLNM) were used to assess the effects of extreme meteorological factors and air pollution indicators, as well as the effects of different lag days on HFMD incidence. Furthermore, this study explored the variability across gender and age groups. RESULTS Extreme temperatures, high precipitation and low-O3 concentration increased the risk of HFMD. Hot effect was stronger and longer lasting than cold effect. Risks of rainy effect and low-O3 effect continued to increase as lag days extended, with the maximum RR values: 1.60 (1.38, 1.86) (90th vs median) and 1.48 (1.16, 1.89) (1th vs median) at 0-14 lag days, respectively. By contrast, extremely high wind speed, low precipitation, low PM2.5 and high O3 exerted a certain protective effect on HFMD incidence. The corresponding minimum RR values were: 0.85 (0.74, 0.98) (90th vs median) at 0-14 lag days, 0.98 (0.97, 0.99) (10th vs median) at 0-14 lag days, 0.73 (0.61, 0.88) (1th vs median) at 0-14 lag days and 0.81 (0.73, 0.90) (99th vs median) at 0-7 lag days, respectively. Male children and children aged 0-1 years (followed by 1-3 years) were the most susceptible subgroups to extreme climatic effects and air pollution. CONCLUSIONS Our results indicated that daily meteorological factors and air pollution exert non-linear and delayed effects on pediatric HFMD, and such effects vary depending on gender and age. These findings may serve as a reference for the development of an early warning system and for the adoption of specific interventions for vulnerable groups.
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Affiliation(s)
- Guoqi Yu
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yonghong Li
- Guangxi Center for Disease Control and Prevention, Acute Infectious Disease Prevention and Control Institute, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jiansheng Cai
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Dongmei Yu
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jiexia Tang
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Wenwen Zhai
- Department of Health Related Social and Behavioral Science, West China School of Public Health, Sichuan University, Chengdu, Sichuan, China
| | - Yi Wei
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Shiyi Chen
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Quanhui Chen
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jian Qin
- Department of Environmental and Occupational Health, Guangxi Medical University, Shuangyong Road, 22, Nanning, Guangxi Zhuang Autonomous Region, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
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106
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Toll-Like Receptor 3 Is Involved in Detection of Enterovirus A71 Infection and Targeted by Viral 2A Protease. Viruses 2018; 10:v10120689. [PMID: 30563052 PMCID: PMC6315976 DOI: 10.3390/v10120689] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/23/2018] [Accepted: 11/30/2018] [Indexed: 12/18/2022] Open
Abstract
Enterovirus A71 (EV-A71) has emerged as a major pathogen causing hand, foot, and mouth disease, as well as neurological disorders. The host immune response affects the outcomes of EV-A71 infection, leading to either resolution or disease progression. However, the mechanisms of how the mammalian innate immune system detects EV-A71 infection to elicit antiviral immunity remain elusive. Here, we report that the Toll-like receptor 3 (TLR3) is a key viral RNA sensor for sensing EV-A71 infection to trigger antiviral immunity. Expression of TLR3 in HEK293 cells enabled the cells to sense EV-A71 infection, leading to type I, IFN-mediated antiviral immunity. Viral double-stranded RNA derived from EV-A71 infection was a key ligand for TLR3 detection. Silencing of TLR3 in mouse and human primary immune cells impaired the activation of IFN-β upon EV-A71 infection, thus reinforcing the importance of the TLR3 pathway in defending against EV-A71 infection. Our results further demonstrated that TLR3 was a target of EV-A71 infection. EV-A71 protease 2A was implicated in the downregulation of TLR3. Together, our results not only demonstrate the importance of the TLR3 pathway in response to EV-A71 infection, but also reveal the involvement of EV-A71 protease 2A in subverting TLR3-mediated antiviral defenses.
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107
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Yao C, Hu K, Xi C, Li N, Wei Y. Transcriptomic analysis of cells in response to EV71 infection and 2Apro as a trigger for apoptosis via TXNIP gene. Genes Genomics 2018; 41:343-357. [DOI: 10.1007/s13258-018-0760-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
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108
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Mao Q, Hao X, Hu Y, Du R, Lang S, Bian L, Gao F, Yang C, Cui B, Zhu F, Shen L, Liang Z. A neonatal mouse model of central nervous system infections caused by Coxsackievirus B5. Emerg Microbes Infect 2018; 7:185. [PMID: 30459302 PMCID: PMC6246558 DOI: 10.1038/s41426-018-0186-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 10/12/2018] [Accepted: 10/21/2018] [Indexed: 01/02/2023]
Abstract
As one of the key members of the coxsackievirus B group, coxsackievirus B5 (CV-B5) can cause many central nervous system diseases, such as viral encephalitis, aseptic meningitis, and acute flaccid paralysis. Notably, epidemiological data indicate that outbreaks of CV-B5-associated central nervous system (CNS) diseases have been reported worldwide throughout history. In this study, which was conducted to promote CV-B5 vaccine and anti-virus drug research, a 3-day-old BALB/c mouse model was established using a CV-B5 clinical isolate (CV-B5/JS417) as the challenge strain. Mice challenged with CV-B5/JS417 exhibited a series of neural clinical symptoms and death with necrosis of neuronal cells in the cerebral cortex and the entire spinal cord, hindlimb muscles, and cardiomyocytes. The viral load of each tissue at various post-challenge time points suggested that CV-B5 replicated in the small intestine and was subsequently transmitted to various organs via viremia; the virus potentially entered the brain through the spinal axons, causing neuronal cell necrosis. In addition, this mouse model was used to evaluate the protective effect of a CV-B5 vaccine. The results indicated that both the inactivated CV-B5 vaccine and anti-CVB5 serum significantly protected mice from a lethal infection of CV-B5/JS417 by producing neutralizing antibodies. In summary, the first CV-B5 neonatal mouse model has been established and can sustain CNS infections in a manner similar to that observed in humans. This model will be a useful tool for studies on pathogenesis, vaccines, and anti-viral drug evaluations.
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Affiliation(s)
- Qunying Mao
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Xiaotian Hao
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Yalin Hu
- Quality Control Department, Hualan Biological Engineering Inc., Henan, China
| | - Ruixiao Du
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Shuhui Lang
- Shandong Xinbo Pharmaceutical Co. Ltd., Dezhou, China
| | - Lianlian Bian
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Fan Gao
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Ce Yang
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Bopei Cui
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China
| | - Fengcai Zhu
- Vaccine Clinical Evaluation Department, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | | | - Zhenglun Liang
- Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing, China.
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109
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Song J, Jiang X, Hu Y, Li H, Zhang X, Xu J, Li W, Zheng X, Dong S. High-Throughput Sequencing of Putative Novel microRNAs in Rhesus Monkey Peripheral Blood Mononuclear Cells following EV71 and CA16 Infection. Intervirology 2018; 61:133-142. [PMID: 30404089 DOI: 10.1159/000493798] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 09/16/2018] [Indexed: 01/24/2023] Open
Abstract
OBJECTIVES Enterovirus 71 (EV71) and Coxsackievirus A16 (CA16) remain the major pathogens in hand, foot, and mouth disease (HFMD) cases, but the mechanisms of the different pathogeneses that follow EV71 and CA16 infection remain largely unknown. METHODS Herein, we utilized microRNA (miRNA) deep sequencing to investigate the roles of novel differentially expressed miRNAs in peripheral blood mononuclear cells (PBMCs) infected with EV71 and CA16. RESULTS The results identified 13 novel differentially expressed miRNAs in each group. Additionally, the target genes were predicted by the miRanda and RNAhybrid programs, and a total of 2,501 targets were found in the two databases. Then, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses revealed that these targets were mainly involved in cell development and were associated with nervous system development, system development, multicellular organism development, the Wnt signaling pathway, the PDGF signaling pathway, and the EGF receptor signaling pathway. Finally, a coexpression regulatory network was built with the key targets to further extrapolate the functional interactions of the targets and their coexpressed genes. CONCLUSION Our results not only revealed potential biomarkers or targets for the diagnosis and treatment of HFMD, but also provided new insights to explore the mechanisms of EV71 and CA16 pathogenesis.
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Affiliation(s)
- Jie Song
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Xi Jiang
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Yajie Hu
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Hui Li
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Xuemei Zhang
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Jingwen Xu
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Weiyu Li
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Xuelin Zheng
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China
| | - Shaozhong Dong
- Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Disease, Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, China,
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110
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Song J, Hu Y, Li H, Huang X, Zheng H, Hu Y, Wang J, Jiang X, Li J, Yang Z, Fan H, Guo L, Shi H, He Z, Yang F, Wang X, Dong S, Li Q, Liu L. miR-1303 regulates BBB permeability and promotes CNS lesions following CA16 infections by directly targeting MMP9. Emerg Microbes Infect 2018; 7:155. [PMID: 30228270 PMCID: PMC6143596 DOI: 10.1038/s41426-018-0157-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/09/2018] [Accepted: 08/13/2018] [Indexed: 12/13/2022]
Abstract
Coxsackievirus A16 (CA16) is a member of the Picornaviridae family and causes mild and self-limiting hand, foot, and mouth disease (HFMD) in infants and young children. CA16 infection can also progress to central nervous system (CNS) complications; however, the underlying mechanism by which CA16 penetrates the blood-brain barrier (BBB) and then causes CNS damage remains unclear. This study aimed to explore the mechanism of CA16 neurotropic tropism by establishing an in vitro BBB model with CA16 infection and an in vivo CA16 rhesus monkey infant infection model. The results showed that CA16 infection induced increased permeability of the BBB accompanied by upregulation of matrix metalloproteinase 9 (MMP9) expression. Subsequently, high-throughput miRNA sequencing technology and bioinformatics analysis revealed that miR-1303 may regulate BBB permeability by targeting MMP9. Next, we used dual-luciferase, qRT-PCR, and western blot assays to provide evidence of MMP9 targeting by miR-1303. Further experiments revealed that CA16 infection promoted the degradation of junctional complexes (Claudin4, Claudin5, VE-Cadherin, and ZO-1), likely by downregulating miR-1303 and upregulating MMP9. Finally, EGFP-CA16 infection could enter the CNS by facilitating the degradation of junctional complexes, eventually causing neuroinflammation and injury to the CNS, which was confirmed using the in vivo rhesus monkey model. Our results indicate that CA16 might penetrate the BBB and then enter the CNS by downregulating miR-1303, which disrupts junctional complexes by directly regulating MMP9 and ultimately causing pathological CNS changes. These results provide new therapeutic targets in HFMD patients following CA16 infection.
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Affiliation(s)
- Jie Song
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Yajie Hu
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Hongzhe Li
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Xing Huang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Huiwen Zheng
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Yunguang Hu
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Jingjing Wang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Xi Jiang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Jiaqi Li
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Zening Yang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Haitao Fan
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Lei Guo
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Haijing Shi
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Zhanlong He
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Fengmei Yang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Xi Wang
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China.,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China
| | - Shaozhong Dong
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China. .,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China.
| | - Qihan Li
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China. .,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China.
| | - Longding Liu
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Yunnan Key Laboratory of Vaccine Research and Development on Severe Infectious Diseases, Kunming, China. .,Key Laboratory of Systemic Innovative Research on Virus Vaccine, Chinese Academy of Medical Sciences, Kunming, China.
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111
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Yao C, Xi C, Hu K, Gao W, Cai X, Qin J, Lv S, Du C, Wei Y. Inhibition of enterovirus 71 replication and viral 3C protease by quercetin. Virol J 2018; 15:116. [PMID: 30064445 PMCID: PMC6069798 DOI: 10.1186/s12985-018-1023-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 07/16/2018] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Enterovirus 71 (EV71) is one of the major causative agents of hand, foot, and mouth disease (HFMD), which is sometimes associated with severe central nervous system disease in children. There is currently no specific medication for EV71 infection. Quercetin, one of the most widely distributed flavonoids in plants, has been demonstrated to inhibit various viral infections. However, investigation of the anti-EV71 mechanism has not been reported to date. METHODS The anti-EV71 activity of quercetin was evaluated by phenotype screening, determining the cytopathic effect (CPE) and EV71-induced cells apoptosis. The effects on EV71 replication were evaluated further by determining virus yield, viral RNA synthesis and protein expression, respectively. The mechanism of action against EV71 was determined from the effective stage and time-of-addition assays. The possible inhibitory functions of quercetin via viral 2Apro, 3Cpro or 3Dpol were tested. The interaction between EV71 3Cpro and quercetin was predicted and calculated by molecular docking. RESULTS Quercetin inhibited EV71-mediated cytopathogenic effects, reduced EV71 progeny yields, and prevented EV71-induced apoptosis with low cytotoxicity. Investigation of the underlying mechanism of action revealed that quercetin exhibited a preventive effect against EV71 infection and inhibited viral adsorption. Moreover, quercetin mediated its powerful therapeutic effects primarily by blocking the early post-attachment stage of viral infection. Further experiments demonstrated that quercetin potently inhibited the activity of the EV71 protease, 3Cpro, blocking viral replication, but not the activity of the protease, 2Apro, or the RNA polymerase, 3Dpol. Modeling of the molecular binding of the 3Cpro-quercetin complex revealed that quercetin was predicted to insert into the substrate-binding pocket of EV71 3Cpro, blocking substrate recognition and thereby inhibiting EV71 3Cpro activity. CONCLUSIONS Quercetin can effectively prevent EV71-induced cell injury with low toxicity to host cells. Quercetin may act in more than one way to deter viral infection, exhibiting some preventive and a powerful therapeutic effect against EV71. Further, quercetin potently inhibits EV71 3Cpro activity, thereby blocking EV71 replication.
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Affiliation(s)
- Chenguang Yao
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Caili Xi
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Kanghong Hu
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Wa Gao
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Xiaofeng Cai
- Merck Stiftungsprofessur Molekulare BiotechnologieInstitut für Molekulare Biowissenschaften Goethe Universität Frankfurt, 60438 Frankfurt am Main, Germany
| | - Jinlan Qin
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Shiyun Lv
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Canghao Du
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
| | - Yanhong Wei
- National “111” Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068 China
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112
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Chen D, Tian X, Zou X, Xu S, Wang H, Zheng N, Wu Z. Harmine, a small molecule derived from natural sources, inhibits enterovirus 71 replication by targeting NF-κB pathway. Int Immunopharmacol 2018; 60:111-120. [DOI: 10.1016/j.intimp.2018.04.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 04/17/2018] [Accepted: 04/30/2018] [Indexed: 01/24/2023]
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113
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The Risk Factors of Acquiring Severe Hand, Foot, and Mouth Disease: A Meta-Analysis. CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY 2018; 2018:2751457. [PMID: 30046361 PMCID: PMC6038695 DOI: 10.1155/2018/2751457] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/22/2018] [Indexed: 11/30/2022]
Abstract
Objectives The incidence of severe hand, foot, and mouth disease (HFMD) is not low, especially in mainland China in almost every year recently. In this study, we conducted a meta-analysis to generate large-scale evidence on the risk factors of severe HFMD to provide suggestions on prevention and controlling. Methods PubMed, Web of Science, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), and Wanfang (Chinese) were searched to identify relevant articles. All analyses were performed using Stata 14.0. Results We conducted a meta-analysis of 11 separate studies. Fever (odds ratio (OR) 7.396, 95% confidence interval (CI) 3.565–15.342), fever for more than 3 days (OR 5.773, 95% CI 4.199–7.939), vomiting (OR 6.023, 95% CI 2.598–13.963), limb trembling (OR 42.348, 95% CI 11.765–152.437), dyspnea (OR 12.869, 95% CI 1.948–85.017), contact with HFMD children (OR 5.326, 95% CI 1.263–22.466), rashes on the hips (OR 1.650, 95% CI 1.303–2.090), pathologic reflexes (OR 3057.064, 95% CI 494.409–19000), Lethargy (OR 31.791, 95% CI 3.369–300.020), convulsions (OR 23.652, 95% CI 1.973–283.592), and EV71 infection (OR 9.056, 95% CI 4.102–19.996) were significantly related to the risk of severe HFMD. We did not find an association between female sex (OR 0.918, 95% CI 0.738–1.142), scatter-lived children (OR 1.347, 95% CI 0.245–7.397), floating population (OR 0.847, 95% CI 0.202–3.549), rash on the hands (OR 0.740, 95% CI 0.292–1.874), rash on the foot (OR 0.905, 95% CI 0.645–1.272), the level of the clinic visited first (below the country level) (OR 5.276, 95% CI 0.781–35.630), breast feeding (OR 0.523, 95% CI 0.167–1.643), and the risk of severe HFMD. Conclusions Fever, fever for more than 3 days, vomiting, limb trembling, dyspnea, contact with HFMD children, rashes on the hips, pathologic reflexes, lethargy, convulsions, and EV71 infection are risk factors for severe HFMD.
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114
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Mao L, Fu X, Wu J, Shen L, Gu J, Yuan Z, Chen J, Zou X, Zhang C. The dynamics of the hand, foot and mouth disease epidemic from 2008 to 2016 in Zhenjiang city, China. Future Microbiol 2018; 13:1029-1040. [PMID: 29634358 DOI: 10.2217/fmb-2018-0063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
AIM To investigate the hand, foot and mouth disease (HFMD) epidemic in Zhenjiang, China from 2008 to 2016. MATERIALS & METHODS A total of 37,202 HFMD cases were investigated and 3707 nasopharyngeal swabs were detected for enterovirus RNA using RT-quantitative PCR. RESULTS We first reported a mixed pattern of HFMD seasonal epidemic with a combination of single-peak and two-peak patterns in alternate years, and the occurrence of sporadic and epidemic outbreaks of HFMD in kindergartens in Zhenjiang. Children younger than 4 years of age were highly vulnerable to HFMD, and home children and boys had higher risk to develop severe HFMD than nursery children and girls, respectively. Among tested samples, 1709 (46.1%) were detected as enterovirus RNA positive. CONCLUSION This study first presents the dynamic of the HFMD epidemic in Zhenjiang from 2008 to 2016.
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Affiliation(s)
- Lingxiang Mao
- Department of Clinical Laboratory, Affiliated People's Hospital, Jiangsu University, Zhenjiang, PR China
| | - Xuemin Fu
- Pathogen Discovery & Big Data Center, CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai 200031, PR China
| | - Jing Wu
- School of Medical Science & Laboratory Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, PR China
| | - Li Shen
- Zhenjiang Center of Disease Control & Prevention, 9 Huangshan South Road, Zhenjiang, Jiangsu, PR China
| | - Jiaqi Gu
- School of Medical Science & Laboratory Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, PR China
| | - Zhaohu Yuan
- Zhenjiang Center of Disease Control & Prevention, 9 Huangshan South Road, Zhenjiang, Jiangsu, PR China
| | - Jianguo Chen
- Department of Clinical Laboratory, Affiliated People's Hospital, Jiangsu University, Zhenjiang, PR China
| | - Xinran Zou
- School of Medical Science & Laboratory Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, PR China
| | - Chiyu Zhang
- Pathogen Discovery & Big Data Center, CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai 200031, PR China
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Spatio-temporal analysis of the relationship between meteorological factors and hand-foot-mouth disease in Beijing, China. BMC Infect Dis 2018; 18:158. [PMID: 29614964 PMCID: PMC5883540 DOI: 10.1186/s12879-018-3071-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 03/26/2018] [Indexed: 11/29/2022] Open
Abstract
Background Hand-foot-mouth disease (HFMD) is a common infectious disease in China and occurs mostly in infants and children. Beijing is a densely populated megacity, in which HFMD has been increasing in the last decade. The aim of this study was to quantify spatio-temporal characteristics of HFMD and the relationship between meteorological factors and HFMD incidence in Beijing, China. Methods Daily counts of HFMD cases from January 2010 to December 2012 were obtained from the Beijing Center for Disease Prevention and Control (CDC). Seasonal trend decomposition with Loess smoothing was used to explore seasonal patterns and temporal trends of HFMD. Bayesian spatiotemporal Poisson regression models were used to quantify spatiotemporal patterns of HFMD incidence and associations with meteorological factors. Results There were 114,777 HFMD cases reported to Beijing CDC from 1 January 2010 to 31 December 2012 and the raw incidence was 568.6 per 100,000 people. May to July was the peak period of HFMD incidence each year. Low-incidence townships were clustered in central, northeast and southwest regions of Beijing. Mean temperature, relative humidity, wind velocity and sunshine hours were all positively associated with HFMD. The effect of wind velocity was significant with a RR of 3.30 (95%CI: 2.37, 4.60) per meter per second increase, as was sunshine hours with a RR of 1.20 (95%CI: 1.02, 1.40) per 1 hour increase. Conclusions The distribution of HFMD in Beijing was spatiotemporally heterogeneous, and was associated with meteorological factors. Meteorological monitoring could be incorporated into prediction and surveillance of HFMD in Beijing. Electronic supplementary material The online version of this article (10.1186/s12879-018-3071-3) contains supplementary material, which is available to authorized users.
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116
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Li J, Pan H, Wang X, Zhu Q, Ge Y, Cai J, Li Y, Xia A, Hu J, Zeng M. Epidemiological surveillance of hand, foot and mouth disease in Shanghai in 2014-2016, prior to the introduction of the enterovirus 71 vaccine. Emerg Microbes Infect 2018; 7:37. [PMID: 29559626 PMCID: PMC5861114 DOI: 10.1038/s41426-018-0035-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 01/10/2018] [Accepted: 01/14/2018] [Indexed: 11/11/2022]
Abstract
Hand, foot, and mouth disease (HFMD) is mainly epidemic in China and Southeast Asian countries. A novel enterovirus 71 vaccine has been available in China for preventing severe HFMD since 2016. Knowledge of the dynamic epidemiology of HFMD in different regions is necessary for appropriate intervention strategies. This study focused on the citywide surveillance data on the epidemiology and etiology of HFMD in Shanghai during 2014–2016. In these 3 years, the total numbers of reported HFMD cases were 65,018, 39,702, and 57,548, respectively; the numbers of severe cases (case-severity ratios) were 248 (0.38%), 35 (0.09%), and 59 (0.10%), respectively. Children <6 years old accounted for 86.65% to 89.34% of HFMD cases and 91.53 to 97.14% of severe cases. EV-A71 caused all three fatal cases. In severe cases, the detection rate of EV-A71 was 77.82% in 2014, 100% in 2015 and 98.31% in 2016. In uncomplicated inpatient cases, the detection rates of EV-A71, CV-A16, CV-A6, and CV-A10 were, respectively, 43.40, 22.10, 30.73, and 1.89% in 2014; 28.52, 6.46, 53.61, and 7.98% in 2015; and 31.79, 14.15, 44.55, and 4.64% in 2016. In mild community cases, the detection rates of EV-A71, CV-A16, CV-A6, and CV-A10 were, respectively, 25.78, 41.64, 22.93, and 1.78% in 2014; 17.41, 21.23, 50.99, and 3.15% in 2015; and 18.92, 27.84, 45.11, and 1.64% in 2016. Among the cluster outbreaks, the most common pathogen was CV-A16 in 2014 (50.69%) and 2015 (38.10%) and CV-A6 in 2016 (36.30%). These findings show that HFMD outbreaks remained at a high level in Shanghai during 2014–2016. CV-A6 was emerging as the most common pathogen causing HFMD.
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Affiliation(s)
- Jingjing Li
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Hao Pan
- Department of Infectious Diseases and Control, Shanghai Municipal Center For Disease Control and Prevention, Shanghai, 200336, China
| | - Xiangshi Wang
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Qirong Zhu
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Yanling Ge
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Jiehao Cai
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Yuefang Li
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Aimei Xia
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China
| | - Jiayu Hu
- Department of Infectious Diseases and Control, Shanghai Municipal Center For Disease Control and Prevention, Shanghai, 200336, China.
| | - Mei Zeng
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, China.
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Profiling of novel microRNAs elicited by EV71 and CA16 infection in human bronchial epithelial cells using high-throughput sequencing. Virus Res 2018; 247:111-119. [DOI: 10.1016/j.virusres.2018.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 01/01/2023]
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118
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Schöffel N, Braun M, Bendels MHK, Brüggmann D, Groneberg DA. [Human hantavirus infections]. ZENTRALBLATT FUR ARBEITSMEDIZIN, ARBEITSSCHUTZ UND ERGONOMIE 2018; 68:94-97. [PMID: 32288306 PMCID: PMC7123101 DOI: 10.1007/s40664-017-0223-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Hantaviruses belong to the Bunyaviridae family. A large number of different subtypes are known worldwide that show a host-specific geographical distribution. Humans may become infected through contact with rodent urine, saliva or feces. In humans, hantavirus infections are an important and worldwide emerging zoonotic disease that may result in a variety of potentially life-threatening diseases, e. g. hemorrhagic fever with renal syndrome (HFRS) and hantavirus cardiopulmonary syndrome (HCPS). There are various aspects of major occupational importance, particularly for agriculturists, veterinarians and forestry workers. This article reviews the current knowledge about epidemiology, pathology, diagnostics, therapy and prevention of human hantavirus infections worldwide.
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Affiliation(s)
- N. Schöffel
- Institut für Arbeitsmedizin, Sozialmedizin und Umweltmedizin, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Deutschland
| | - M. Braun
- Institut für Arbeitsmedizin, Sozialmedizin und Umweltmedizin, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Deutschland
| | - M. H. K Bendels
- Institut für Arbeitsmedizin, Sozialmedizin und Umweltmedizin, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Deutschland
| | - D. Brüggmann
- Institut für Arbeitsmedizin, Sozialmedizin und Umweltmedizin, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Deutschland
| | - D. A. Groneberg
- Institut für Arbeitsmedizin, Sozialmedizin und Umweltmedizin, Goethe-Universität Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Deutschland
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Zhang Q, Zhao B, Chen X, Song N, Wu J, Li G, Yu P, Han Y, Liu J, Qin C. GS-9620 inhibits enterovirus 71 replication mainly through the NF-κB and PI3K-AKT signaling pathways. Antiviral Res 2018; 153:39-48. [PMID: 29425831 DOI: 10.1016/j.antiviral.2018.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/12/2018] [Accepted: 02/05/2018] [Indexed: 12/16/2022]
Abstract
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. With three-days treatment after EV71 infection, the levels of proinflammatory cytokines/chemokines, like IFN-α, IFN-γ and MCP-1, were sharply reduced in serum compared to those without treatment. Furthermore, GS-9620 activated TLR7 in the limb muscle cells, which stimulated the NF-κB and PI3K/AKT signaling pathways. When NF-κB or PI3K/AKT inhibitors were used, the antiviral effect of the GS-9620 was impacted. Overall, our data implied GS-9620 probably activates NF-κB and PI3K/AKT signaling pathways to clear the virus.
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Affiliation(s)
- Qian Zhang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Binbin Zhao
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Xin Chen
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Nan Song
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Jing Wu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Guangchao Li
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Pin Yu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Yunlin Han
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China
| | - Jiangning Liu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China.
| | - Chuan Qin
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC) & Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Key Laboratory of Human Disease Comparative Medicine Ministry of Health, Beijing, PR China.
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Qi H, Chen Y, Xu D, Su H, Zhan L, Xu Z, Huang Y, He Q, Hu Y, Lynn H, Zhang Z. Impact of meteorological factors on the incidence of childhood hand, foot, and mouth disease (HFMD) analyzed by DLNMs-based time series approach. Infect Dis Poverty 2018; 7:7. [PMID: 29391070 PMCID: PMC5796399 DOI: 10.1186/s40249-018-0388-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/12/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hand, foot, and mouth disease (HFMD) has become an emerging infectious disease in China in the last decade. There has been evidence that meteorological factors can influence the HFMD incidence, and understanding the mechanisms can help prevent and control HFMD. METHODS HFMD incidence data and meteorological data in Minhang District, Shanghai were obtained for the period between 2009 and 2015. Distributed lag non-linear models (DLNMs) were utilized to investigate the impact of meteorological factors on HFMD incidence after adjusting for potential confounders of long time trend, weekdays and holidays. RESULTS There was a non-linear relationship between temperature and HFMD incidence, the RR of 5th percentile compared to the median is 0.836 (95% CI: 0.671-1.042) and the RR of 95th percentile is 2.225 (95% CI: 1.774-2.792), and the effect of temperature varied across age groups. HFMD incidence increased with increasing average relative humidity (%) (RR = 1.009, 95% CI: 1.005-1.015) and wind speed (m/s) (RR = 1.197, 95% CI: 1.118-1.282), and with decreasing daily rainfall (mm) (RR = 0.992, 95% CI: 0.987-0.997) and sunshine hours (h) (RR = 0.966, 95% CI: 0.951-0.980). CONCLUSIONS There were significant relationships between meteorological factors and childhood HFMD incidence in Minhang District, Shanghai. This information can help local health agencies develop strategies for the control and prevention of HFMD under specific climatic conditions.
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Affiliation(s)
- Hongchao Qi
- Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai, 200032, China.,Key Laboratory of Public Health Safety, Ministry of Education, Shanghai, 200032, China.,Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai, 200032, China
| | - Yue Chen
- School of Epidemiology, Pubic Health and Preventive Medicine, Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, 10610, Canada
| | - Dongli Xu
- Minghang District Center for Disease Control and Prevention, Shanghai, 201101, China
| | - Hualin Su
- Minghang District Center for Disease Control and Prevention, Shanghai, 201101, China
| | - Longwen Zhan
- Minghang District Center for Disease Control and Prevention, Shanghai, 201101, China
| | - Zhiyin Xu
- Minghang District Center for Disease Control and Prevention, Shanghai, 201101, China
| | - Ying Huang
- Shanghai Meteorological Service, Shanghai, 201499, China
| | - Qianshan He
- Shanghai Meteorological Service, Shanghai, 201499, China.,Shanghai Key Laboratory of Meteorology and Health, Shanghai, 201499, China
| | - Yi Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai, 200032, China.,Key Laboratory of Public Health Safety, Ministry of Education, Shanghai, 200032, China.,Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai, 200032, China
| | - Henry Lynn
- Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai, 200032, China. .,Key Laboratory of Public Health Safety, Ministry of Education, Shanghai, 200032, China. .,Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai, 200032, China.
| | - Zhijie Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Fudan University, Shanghai, 200032, China. .,Key Laboratory of Public Health Safety, Ministry of Education, Shanghai, 200032, China. .,Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai, 200032, China.
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121
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Gu W, Zeng G, Hu YM, Hu YS, Zhang Y, Hu YL, Wang Y, Li JX, Zhu FC. A comparative analysis of immunogenicity and safety of an enterovirus 71 vaccine between children aged 3-5 years and infants aged 6-35 months. Expert Rev Vaccines 2018; 17:257-262. [DOI: 10.1080/14760584.2018.1430572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Wei Gu
- School of Public Health, Nanjing Medical University, Nanjing, PR China
| | | | - Yue-mei Hu
- Vaccine Clinical Evaluation Department, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, PR China
| | | | | | | | - Yang Wang
- School of Public Health, Southeast University, Nanjing, PR China
| | - Jing-Xin Li
- Vaccine Clinical Evaluation Department, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, PR China
| | - Feng-Cai Zhu
- School of Public Health, Nanjing Medical University, Nanjing, PR China
- Vaccine Clinical Evaluation Department, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, PR China
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122
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Huang DC, Wang JF. Monitoring hand, foot and mouth disease by combining search engine query data and meteorological factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 612:1293-1299. [PMID: 28898935 DOI: 10.1016/j.scitotenv.2017.09.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/03/2017] [Accepted: 09/03/2017] [Indexed: 05/12/2023]
Abstract
Hand, foot and mouth disease (HFMD) has been recognized as a significant public health threat and poses a tremendous challenge to disease control departments. To date, the relationship between meteorological factors and HFMD has been documented, and public interest of disease has been proven to be trackable from the Internet. However, no study has explored the combination of these two factors in the monitoring of HFMD. Therefore, the main aim of this study was to develop an effective monitoring model of HFMD in Guangzhou, China by utilizing historical HFMD cases, Internet-based search engine query data and meteorological factors. To this end, a case study was conducted in Guangzhou, using a network-based generalized additive model (GAM) including all factors related to HFMD. Three other models were also constructed using some of the variables for comparison. The results suggested that the model showed the best estimating ability when considering all of the related factors.
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Affiliation(s)
- Da-Cang Huang
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Key Laboratory of Surveillance and Early Warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing 102206, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jin-Feng Wang
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China.
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123
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Mirand A, le Sage FV, Pereira B, Cohen R, Levy C, Archimbaud C, Peigue-Lafeuille H, Bailly JL, Henquell C. Ambulatory Pediatric Surveillance of Hand, Foot and Mouth Disease as Signal of an Outbreak of Coxsackievirus A6 Infections, France, 2014-2015. Emerg Infect Dis 2018; 22:1884-1893. [PMID: 27767012 PMCID: PMC5088007 DOI: 10.3201/eid2211.160590] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Outbreaks can be detected by syndromic surveillance, rapid enterovirus testing, and genotyping. The clinical impact of enteroviruses associated with hand, foot and mouth disease (HFMD) is unknown outside Asia, and the prevalence of enterovirus A71 (EV-A71) in particular might be underestimated. To investigate the prevalence of enterovirus serotypes and the clinical presentations associated with HFMD in France, we conducted prospective ambulatory clinic–based surveillance of children during April 2014–March 2015. Throat or buccal swabs were collected from children with HFMD and tested for the enterovirus genome. Physical examinations were recorded on a standardized form. An enterovirus infection was detected in 523 (79.3%) of 659 children tested. Two epidemic waves occurred, dominated by coxsackievirus (CV) A6, which was detected in 53.9% of enterovirus-infected children. CV-A6 was more frequently related to atypical HFMD manifestations (eruptions extended to limbs and face). Early awareness and documentation of HFMD outbreaks can be achieved by syndromic surveillance of HFMD by ambulatory pediatricians and rapid enterovirus testing and genotyping.
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MESH Headings
- Adolescent
- Age Factors
- Child
- Child, Preschool
- Disease Outbreaks
- Enterovirus A, Human/classification
- Enterovirus A, Human/genetics
- Female
- France/epidemiology
- Hand, Foot and Mouth Disease/diagnosis
- Hand, Foot and Mouth Disease/epidemiology
- Hand, Foot and Mouth Disease/history
- Hand, Foot and Mouth Disease/virology
- History, 21st Century
- Humans
- Infant
- Infant, Newborn
- Male
- Molecular Typing
- Phylogeny
- Population Surveillance
- Prospective Studies
- RNA, Viral
- Serogroup
- Symptom Assessment
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124
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Hou YH, Wang JJ, Jiang YZ, Lv C, Xia L, Hong SL, Lin M, Lin Y, Zhang ZL, Pang DW. A colorimetric and electrochemical immunosensor for point-of-care detection of enterovirus 71. Biosens Bioelectron 2018; 99:186-192. [DOI: 10.1016/j.bios.2017.07.035] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 10/19/2022]
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125
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Suresh S, Forgie S, Robinson J. Non-polio Enterovirus detection with acute flaccid paralysis: A systematic review. J Med Virol 2018; 90:3-7. [PMID: 28857219 DOI: 10.1002/jmv.24933] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 08/18/2017] [Indexed: 11/07/2022]
Abstract
Acute flaccid paralysis (AFP), as defined by the World Health Organization (WHO), is characterized by an acute onset of limb weakness. In the post-polio era, other enterovirus (EV) serotypes associated with AFP may become more prominent. This study aims to collate the data on the non-polio enteroviruses (NPEV) associated with AFP. A systematic review of published case reports, case series, and surveillance studies of AFP from 1960 through 2017 was undertaken. Data were collected including the country of the study, number of specimens positive for NPEV and available clinical data. The majority of studies originated from Asia. In surveillance studies, EV 71 (a serotype of Enterovirus A) was the most commonly detected serotype with AFP, followed by Enterovirus B serotype echovirus 11 and then Enterovirus B serotype echovirus 11. In case studies and case reports, EV 71 and EV 68 (a serotype of Enterovirus D), were the most commonly detected NPEV. As poliovirus eradication continues, there is a need to ensure that AFP surveillance will also detect other potentially vaccine preventable viruses.
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MESH Headings
- Adolescent
- Adult
- Asia/epidemiology
- Child
- Child, Preschool
- Enterovirus A, Human/genetics
- Enterovirus A, Human/immunology
- Enterovirus A, Human/isolation & purification
- Enterovirus A, Human/pathogenicity
- Enterovirus B, Human/genetics
- Enterovirus B, Human/immunology
- Enterovirus B, Human/isolation & purification
- Enterovirus B, Human/pathogenicity
- Enterovirus D, Human/genetics
- Enterovirus D, Human/immunology
- Enterovirus D, Human/isolation & purification
- Enterovirus D, Human/pathogenicity
- Enterovirus Infections/complications
- Enterovirus Infections/epidemiology
- Enterovirus Infections/virology
- Feces/virology
- Female
- Humans
- Male
- Nucleic Acid Amplification Techniques
- Paraplegia/epidemiology
- Paraplegia/etiology
- Paraplegia/virology
- Phylogeny
- Poliovirus
- Serogroup
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Affiliation(s)
- Sneha Suresh
- Department of Pediatrics, Stollery Children's Hospital and University of Alberta, Edmonton, Alberta, Canada
| | - Sarah Forgie
- Department of Pediatrics, Stollery Children's Hospital and University of Alberta, Edmonton, Alberta, Canada
| | - Joan Robinson
- Department of Pediatrics, Stollery Children's Hospital and University of Alberta, Edmonton, Alberta, Canada
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126
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An evaluation of Chloroquine as a broad-acting antiviral against Hand, Foot and Mouth Disease. Antiviral Res 2018; 149:143-149. [DOI: 10.1016/j.antiviral.2017.11.017] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 11/16/2017] [Accepted: 11/20/2017] [Indexed: 11/23/2022]
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127
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Epidemiological and genetic characteristics of EV71 in hand, foot, and mouth disease in Guangxi, southern China, from 2010 to 2015. PLoS One 2017; 12:e0188640. [PMID: 29216216 PMCID: PMC5720782 DOI: 10.1371/journal.pone.0188640] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 11/11/2017] [Indexed: 11/21/2022] Open
Abstract
Hand, foot, and mouth disease (HFMD) is a significant public health challenge in China. Human enterovirus 71 (EV71) is regarded as the predominant causative pathogen of HFMD. Since 2015, two inactivated EV71 vaccines have been approved in mainland China, and because their use could change the HFMD pathogen spectrum, this should now be monitored. However, the epidemiological and genetic trends of EV71 with respect to HFMD in Guangxi, southern China, are still not clear. In this study, we describe the epidemiological and genetic characterization of this virus in clinically-diagnosed HFMD reported from 2010 to 2015 in Guangxi. Data showed that a two-year epidemic cycle, with a predominance of EV71 infections, contributed to HFMD outbreaks in Guangxi. Furthermore, this virus is a major causative agent of severe and fatal HFMD. Interestingly, in Guangxi, EV71-positive rates tended to decrease over time. In particular, EV71-positive rates were found in Fangchenggang city, which reported very few severe and fatal cases over the six-year period. Phylogenetic analysis of the VP1 gene revealed that the major circulating strains belonged exclusively to genotype C, subtype 4a (C4a), and most clustered with strains circulating in southern China. The most interesting finding was that a strain isolated in 2012 clustered with Vietnamese strains isolated from 2011–2012. The data highlight the importance of pathogen surveillance for HFMD in China, especially Guangxi, which is located on the border of China and the Association of Southeast Asian Nations.
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128
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Zheng G, Cao J, Yu J, Zhang Z, Liu Q, Chen J. Risk factors for death in children with critical and severe hand-foot-and-mouth disease in Chongqing, China: An observational study. Medicine (Baltimore) 2017; 96:e8934. [PMID: 29245260 PMCID: PMC5728875 DOI: 10.1097/md.0000000000008934] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Hand-foot-and-mouth disease (HFMD) is a common childhood infection that may lead to serious complications and even death. Globally, epidemics of HFMD are increasing each year, especially in China. This study aimed to identify risk factors for death in children with critical and severe HFMD in Chongqing, China.We performed an observational study involving patients with critical and severe HFMD admitted to the Children's Hospital of Chongqing Medical University from January 2009 to December 2016. Overall, 179 patients aged 2 months to 16 years, were included; 127 died (non-survival group) and 52 survived (survival group); the case-fatality rate was 70.94%. Data comprising demographic characteristics, clinical symptoms and signs, and laboratory findings were collected. Non-conditional logistic regression analysis was performed to determine the risk factors for death.Univariate analysis showed that sex, coma, light-reflex insensitivity, pulmonary rales, pulmonary edema or hemorrhage, cold extremities, tachycardia, hypotension, white blood cell count, blood glucose concentration, serum lactate level, creatine kinase-MB isoenzyme level, and acidosis were associated with death (P < .05). Logistic regression analysis identified female sex (odds ratio [OR] 9.6, 95% confidence interval [CI] 3.0-30.2), light-reflex insensitivity (OR 4.4, 95% CI 1.4-13.1), tachycardia (OR 1.05, 95% CI 1.03-1.07), and higher serum lactate levels (OR 1.14, 95% CI 1.19-1.69) as independent risk factors; and longer onset-to-hospitalization time (OR 0.43, 95% CI 0.28-0.66) as an independent protective factor for death in children with critical and severe HFMD.Female sex, light-reflex insensitivity, tachycardia, and higher serum lactate level are potential independent risk factors; and longer onset-to-hospitalization time is possibly an independent protective factor for death in patients with critical and severe HFMD.
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129
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MiR-16-5p mediates a positive feedback loop in EV71-induced apoptosis and suppresses virus replication. Sci Rep 2017; 7:16422. [PMID: 29180670 PMCID: PMC5703983 DOI: 10.1038/s41598-017-16616-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 11/15/2017] [Indexed: 01/29/2023] Open
Abstract
Enterovirus 71 (EV71) is the predominant causative pathogen of hand-foot-and-mouth disease (HFMD). Contrary to other HFMD-causing enterovirus, EV71 can lead to severe neurological complications, even death. MicroRNAs (miRNAs) are small non-coding RNAs that constitute the largest family of gene regulators participating in numerous biological or pathological processes. We previously reported that miR-16-5p increases with severity of HFMD by investigating the expression patterns of host miRNAs in patients with HFMD. However, the mechanisms by which EV71 induces miR-16-5p expression are not clear, and the interaction between EV71 and miR-16-5p is not yet fully understood. Here, we confirmed EV71-induced expression of miR-16-5p both in vitro and in vivo and show that upregulation of miR-16-5p by EV71 infection may occur at the posttranscriptional level. Moreover, EV71-induced caspase activation facilitates the processing of pri-miR-16-1. We also revealed that miR-16-5p can promote EV71-induced nerve cells apoptosis through activating caspase-3. In addition, we found that miR-16-5p can inhibit EV71 replication. CCNE1 and CCND1, two important cell cycle regulators, play an important role in the suppression of EV71 replication by miR-16-5p. Therefore, miR-16-5p is a positive feedback regulator in EV71-induced apoptosis and a suppressor of virus replication. These results help in understanding the interaction network between miRNA and EV71 infection and provide a potential target for the development of antiviral therapy.
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130
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Gao F, Bian L, Hao X, Hu Y, Yao X, Sun S, Chen P, Yang C, Du R, Li J, Zhu F, Mao Q, Liang Z. Seroepidemiology of coxsackievirus B5 in infants and children in Jiangsu province, China. Hum Vaccin Immunother 2017; 14:74-80. [PMID: 29049009 DOI: 10.1080/21645515.2017.1384107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
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. The confirmed enterovirus cases were recorded through the surveillance system, and their throat or rectal swabs were collected for pathogen detection. According to the changes of CV-B5 NtAbs, two CV-B5 epidemics were detected among these participants during the two-year follow-up. Sixty-seven cases out of all participants had seroconversion in CV-B5 NtAbs. During the first epidemic from March 2012 to September 2012, CV-B5 seropositivity rate increased significantly (6.8%, 12/176 vs. 21.6%, 38/176, P = 0.000). The seroconversion rate and geometric mean fold-increase (GMFI) were 18.2% (32/176) and 55.7, respectively; During the second epidemic from September 2012 to January 2014, CV-B5 seropositivity rate also increased (21.6%, 38/176 vs. 38.6%, 68/176, P = 0.000), and the seroconversion rate and GMFI were 19.9% (35/176) and 46.5, respectively. Only one case had CV-B5 associated HFMD during the two-year follow-up, and CV-B5 from the throat swab isolate was GI.D3 subtype, which belonged to the major pandemic strain in mainland China. CV-B5 infection was common in infants and children in Jiangsu province, China. Therefore, it's necessary to strengthen the surveillance on CV-B5 and to understand the epidemic characteristics of CV-B5 infection.
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Affiliation(s)
- Fan Gao
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Lianlian Bian
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Xiaotian Hao
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Yalin Hu
- b Hualan Biological Engineering Inc , Xinxiang , Henan , P. R. China
| | - Xin Yao
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Shiyang Sun
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Pan Chen
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Ce Yang
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Ruixiao Du
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Jingxin Li
- c Jiangsu Provincial Center for Disease Control and Prevention , Nanjing , Jiangsu , P. R. China
| | - Fengcai Zhu
- c Jiangsu Provincial Center for Disease Control and Prevention , Nanjing , Jiangsu , P. R. China
| | - Qunying Mao
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
| | - Zhenglun Liang
- a Division Hepatitis Virus Vaccines , National Institutes for Food and Drug Control , Beijing , P. R. China
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131
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Cao Z, Ding Y, Cao L, Ding G, Wang Z, Xiao W. Isochlorogenic acid C prevents enterovirus 71 infection via modulating redox homeostasis of glutathione. Sci Rep 2017; 7:16278. [PMID: 29176678 PMCID: PMC5701158 DOI: 10.1038/s41598-017-16446-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 11/13/2017] [Indexed: 02/08/2023] Open
Abstract
Enterovirus 71 (EV71) is a key pathogen of hand, foot and mouth disease (HFMD) in children under 6 years of age. The antiviral potency of antioxidant isochlorogenic acid C (ICAC) extracted from foods was evaluated in cellular and animal models. First, the cytotoxicity of ICAC on Vero cells was investigated. The viral plaques, cytopathic effects and yield induced by EV71 infection were obviously reduced by ICAC, which was consistent with the investigation of VP1 transcripts and protein expression. Moreover, the mortality, weight loss and limb paralysis of mice caused by EV71 challenge were remarkably relieved by ICAC injection, which was achieved through decreases in the viral load and cytokine secretion in the mouse brain. Further biochemical assays showed that ICAC modulated several antioxidant enzymes involved in reduced and oxidized glutathione (GSH and GSSG) homeostasis, including glutathione reductase (GR), glutathione peroxidase (GPX), and glucose-6-phosphate dehydrogenase (G6PD), resulting in restoration of the GSH/GSSG ratio and reactive oxygen species (ROS) level. Finally, the antiviral effects of ICAC were dose-dependently disrupted by BSO, a biosynthesis inhibitor of GSH. This study indicated that ICAC acted as an antioxidant and prevented EV71 infection by modulating the redox homeostasis of glutathione.
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Affiliation(s)
- Zeyu Cao
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China
| | - Yue Ding
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China
| | - Liang Cao
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China
| | - Gang Ding
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China
| | - Zhenzhong Wang
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China
| | - Wei Xiao
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, 222001, China.
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132
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Yang T, Li H, Yue L, Song X, Xie T, Ma S, Meng H, Zhang Y, He X, Long R, Yang R, Luo F, Xie Z, Li Q. A comparative study of multiple clinical enterovirus 71 isolates and evaluation of cross protection of inactivated vaccine strain FY-23 K-B in vitro. Virol J 2017; 14:206. [PMID: 29073897 PMCID: PMC5659012 DOI: 10.1186/s12985-017-0872-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 10/17/2017] [Indexed: 11/29/2022] Open
Abstract
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. We established growth curves of the strains in Vero cells, performed genetic analysis, and evaluated the cross protection efficacy through neutralizing assays using antisera from a rabbit, monkey and adult human immunized with the FY-23 K-B vaccine strain. Results The antisera showed broad cross protection among the C4 subgroup strains and homotype strain. Neutralizing indexes (NIs) among the isolates and homotype strain of antisera varied between 56.2–1995.3 for rabbit, 17.8–42,169.7 for monkey and 31.6–17,782.8 for human, whereas NIs against Coxsackievirus A16 or other enteroviruses were below 10. Conclusions These results suggested that FY-23 K-B used as an antigen could elicit broad spectrum neutralizing antibodies with cross protective efficacy among C4 genotype strains.
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Affiliation(s)
- Ting Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Hua Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Lei Yue
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Xia Song
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Tianhong Xie
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Shaohui Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Huaqing Meng
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Ye Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Xin He
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Runxiang Long
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Rong Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Fangyu Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China
| | - Zhongping Xie
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China.
| | - Qihan Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China.
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133
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Antiviral effects of Retro-2 cycl and Retro-2.1 against Enterovirus 71 in vitro and in vivo. Antiviral Res 2017; 144:311-321. [PMID: 28688753 DOI: 10.1016/j.antiviral.2017.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 11/23/2022]
Abstract
Enterovirus 71 (EV71) is one of the causative pathogens of hand, foot and mouth disease (HFMD), especially the form associated with fatal neurological disorders. Sustained outbreaks of EV71 infections remain a serious health threat worldwide. However, no antiviral agent against EV71 for clinical therapy has been approved. Retro-2cycl and Retro-2.1 are inhibitors of several pathogens specifically targeting the intracellular vesicle transport, which also participates in the EV71 lifecycle processes including progeny virus release. Here, we reported that Retro-2cycl and Retro-2.1, respectively, could inhibit EV71 infection with 50% effective concentrations of 12.56 μM and 0.05 μM in a cytopathic effect inhibition assay and showed relatively low cytotoxicity with 50% cytotoxicity concentrations of more than 500 μM and 267.80 μM. Preliminary mechanism studies revealed that Retro-2cycl and Retro-2.1 did not inhibit EV71 protein synthesis or RNA replication but could block progeny EV71 release specifically. Furthermore, administration of Retro-2cycl at the dose of 10 mg/kg significantly protected 90% of newborn mice from lethal EV71 challenge. Consequently, our results for the first time identified Retro-2cycl and Retro-2.1 as effective inhibitors of EV71 as well as lead compounds, which would contribute to anti-EV71 drug development. We also identified progeny virus release and the intracellular vesicle transport as antiviral targets for EV71.
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134
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Anastasina M, Domanska A, Palm K, Butcher S. Human picornaviruses associated with neurological diseases and their neutralization by antibodies. J Gen Virol 2017. [PMID: 28631594 DOI: 10.1099/jgv.0.000780] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Picornaviruses are the most commonly encountered infectious agents in mankind. They typically cause mild infections of the gastrointestinal or respiratory tract, but sometimes also invade the central nervous system. There, they can cause severe diseases with long-term sequelae and even be lethal. The most infamous picornavirus is poliovirus, for which significant epidemics of poliomyelitis were reported from the end of the nineteenth century. A successful vaccination campaign has brought poliovirus close to eradication, but neurological diseases caused by other picornaviruses have increasingly been reported since the late 1990s. In this review we focus on enterovirus 71, coxsackievirus A16, enterovirus 68 and human parechovirus 3, which have recently drawn attention because of their links to severe neurological diseases. We discuss the clinical relevance of these viruses and the primary role of humoral immunity in controlling them, and summarize current knowledge on the neutralization of such viruses by antibodies.
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Affiliation(s)
- Maria Anastasina
- Institute of Biotechnology and Department of Biosciences, University of Helsinki, Viikinkaari 1, 00790 Helsinki, Finland.,Protobios LLC, Mäealuse 4, 12618 Tallinn, Estonia
| | - Aušra Domanska
- Institute of Biotechnology and Department of Biosciences, University of Helsinki, Viikinkaari 1, 00790 Helsinki, Finland
| | - Kaia Palm
- Protobios LLC, Mäealuse 4, 12618 Tallinn, Estonia.,Institute of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Sarah Butcher
- Institute of Biotechnology and Department of Biosciences, University of Helsinki, Viikinkaari 1, 00790 Helsinki, Finland
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135
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Hankaniemi MM, Laitinen OH, Stone VM, Sioofy-Khojine A, Määttä JAE, Larsson PG, Marjomäki V, Hyöty H, Flodström-Tullberg M, Hytönen VP. Optimized production and purification of Coxsackievirus B1 vaccine and its preclinical evaluation in a mouse model. Vaccine 2017; 35:3718-3725. [PMID: 28579231 DOI: 10.1016/j.vaccine.2017.05.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/19/2017] [Accepted: 05/20/2017] [Indexed: 10/19/2022]
Abstract
Coxsackie B viruses are among the most common enteroviruses, causing a wide range of diseases. Recent studies have also suggested that they may contribute to the development of type 1 diabetes. Vaccination would provide an effective way to prevent CVB infections, and the objective of this study was to develop an efficient vaccine production protocol for the generation of novel CVB vaccines. Various steps in the production of a formalin-inactivated Coxsackievirus B1 (CVB1) vaccine were optimized including the Multiplicity Of Infection (MOI) used for virus amplification, virus cultivation time, type of cell growth medium, virus purification method and formulation of the purified virus. Safety and immunogenicity of the formalin inactivated CVB1 vaccine was characterized in a mouse model. Two of the developed methods were found to be optimal for virus purification: the first employed PEG-precipitation followed by gelatin-chromatography and sucrose cushion pelleting (three-step protocol), yielding 19-fold increase in virus concentration (0.06µg/cm2) as compared to gold standard method. The second method utilized tandem sucrose pelleting without a PEG precipitation step, yielding 83-fold increase in virus concentration (0.24µg/cm2), but it was more labor-intensive and cannot be efficiently scaled up. Both protocols provide radically higher virus yields compared with traditional virus purification protocols involving PEG-precipitation and sucrose gradient ultracentrifugation. Formalin inactivation of CVB1 produced a vaccine that induced a strong, virus-neutralizing antibody response in vaccinated mice, which protected against challenge with CVB1 virus. Altogether, these results provide valuable information for the development of new enterovirus vaccines.
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Affiliation(s)
- Minna M Hankaniemi
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Olli H Laitinen
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Virginia M Stone
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital Huddinge, F59, SE-141 86 Stockholm, Sweden
| | - Amirbabak Sioofy-Khojine
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Juha A E Määttä
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Pär G Larsson
- The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital Huddinge, F59, SE-141 86 Stockholm, Sweden
| | - Varpu Marjomäki
- Department of Biological and Environmental Science/Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - Heikki Hyöty
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Malin Flodström-Tullberg
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; The Center for Infectious Medicine, Department of Medicine HS, Karolinska Institutet, Karolinska University Hospital Huddinge, F59, SE-141 86 Stockholm, Sweden
| | - Vesa P Hytönen
- Faculty of Medicine and Life Sciences, University of Tampere, FI-33520 Tampere, Finland; Fimlab Laboratories, FI-33520 Tampere, Finland.
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136
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Weng Y, Chen W, He W, Huang M, Zhu Y, Yan Y. Serotyping and Genetic Characterization of Hand, Foot, and Mouth Disease (HFMD)-Associated Enteroviruses of No-EV71 and Non-CVA16 Circulating in Fujian, China, 2011-2015. Med Sci Monit 2017; 23:2508-2518. [PMID: 28539579 PMCID: PMC5452872 DOI: 10.12659/msm.901364] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Hand, foot, and mouth disease (HFMD) is a common contagious disease in infants; it is caused by multiple serotypes of human enterovirus (EV), which belongs to the enterovirus genus of the picornavirus family. According to sentinel surveillance, infection with EVs other than EV71 and CVA 16 have become increasingly common in recent years among HFMD patients, posing new challenges for HFMD control. This study aimed to explore the spectrum of serotypes in the other EVs (non-EV71 and non-CVA16) in Fujian province in southeastern China. MATERIAL AND METHODS We investigated 562 samples from EVs-infected HFMD patients with diagnosis confirmed by real-time RT-PCR with other EVs infection between 2011 and 2015. Nucleotide acid detection and the serotyping of the enteroviruses were also performed. The complete VP1 gene was amplified and sequenced. VP1-based phylogenetic analyses of CVA6, CVA10, CVA4, and CVA2 were also performed. RESULTS Among the samples, 22 serotypes of the other EVs, which belong to 4 species of human enterovirus A-D, were identified. Of the 22 serotypes, CVA6 (57.8%) and CVA10 (21.0%) were most common, followed by CVA4 (6.8%) and CVA2 (2.7%). The other 18 serotypes accounted for 11.7% of samples, none of which exceeded 2%. Among 47 (8.4%) samples from patients with severe HFMD, 10 serotypes were identified and most samples belonged to CVA6 (20/47), followed by CVA10 (11/47). Entire VP1 comparison revealed that overall genetic identities were 96.7%, 96.3%, 94.4%, and 94.9% among strains within CVA6, CVA10, CVA4, and CVA2, respectively. CONCLUSIONS VP1-based phylogenetic analysis for the 4 predominant serotypes indicated various clades or sub-clades, which suggests the complex transmissions of other enteroviruses in Fujian.
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Affiliation(s)
- Yuwei Weng
- Public Health School of Fujian Medical University, Fuzhou, Fujian, China (mainland)
| | - Wei Chen
- Fujian Center for Disease Control and Prevention, Fuzhou, Fujian, China (mainland)
| | - Wenxiang He
- Fujian Center for Disease Control and Prevention, Fuzhou, Fujian, China (mainland)
| | - Meng Huang
- Fujian Center for Disease Control and Prevention, Fuzhou, Fujian, China (mainland)
| | - Ying Zhu
- Fujian Center for Disease Control and Prevention, Fuzhou, Fujian, China (mainland)
| | - Yansheng Yan
- Public Health School of Fujian Medical University, Fuzhou, Fujian, China (mainland).,Fujian Center for Disease Control and Prevention, Fuzhou, Fujian, China (mainland)
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137
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Reyes M, Piotrowski M, Ang SK, Chan J, He S, Chu JJH, Kah JCY. Exploiting the Anti-Aggregation of Gold Nanostars for Rapid Detection of Hand, Foot, and Mouth Disease Causing Enterovirus 71 Using Surface-Enhanced Raman Spectroscopy. Anal Chem 2017; 89:5373-5381. [PMID: 28414218 DOI: 10.1021/acs.analchem.7b00066] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Enterovirus 71 (EV71) is a major public health threat that requires rapid point-of-care detection. Here, we developed a surface-enhanced Raman spectroscopy (SERS)-based scheme that utilized protein-induced aggregation of colloidal gold nanostars (AuNS) to rapidly detect EV71 without the need for fabricating a solid substrate, Raman labels or complicated sample handling. We used AuNS (hydrodynamic diameter, DH of 105.12 ± 1.13 nm) conjugated to recombinant scavenger receptor class B, member 2 (SCARB2) protein with known affinity to EV71. In the absence of EV71, AuNS-SCARB2 aggregated in biological media and produced four enhanced Raman peaks at 390, 510, 670, and 910 cm-1. In the presence of EV71, the three peaks at 510, 670, and 910 cm-1 disappeared, while the peak at 390 cm-1 diminished in intensity as the virus bound to AuNS-SCARB2 and prevented them from aggregation. These three peaks (510, 670, and 910 cm-1) were potential markers for specific detection of EV71 as their disappearance was not observable with a different dengue virus (DENV) as our control. Furthermore, the Raman measurements from colloidal SERS were more sensitive in probing the aggregation of AuNS-SCARB2 for detecting the presence of EV71 in protein-rich samples compared to UV-vis spectrum measurements. With this facile "anti-aggregation" approach, we were able to detect EV71 in protein-rich biological medium within 15 min with reasonable sensitivity of 107 pfu/mL and minimal sample preparation, making this translatable for point-of-care applications.
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Affiliation(s)
- Miguel Reyes
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, Blk EA, #03-09, Singapore 117575
| | - Marek Piotrowski
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences , Niezapominajek 8, 30-239 Krakow, Poland
- International Iberian Nanotechnology Laboratory , Avenida Mestre José Veiga, 4715-330 Braga, Portugal
| | - Swee Kim Ang
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore , 5 Science Drive 2, Blk MD4, Level 5, Singapore 117597
| | - Jingqi Chan
- Temasek Junior College , 22 Bedok South Road, Singapore 469278
| | - Shuai He
- Department of Biomedical Engineering, National University of Singapore , 4 Engineering Drive 3, Blk E4, #04-08, Singapore 117583
| | - Justin Jang Hann Chu
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore , 5 Science Drive 2, Blk MD4, Level 5, Singapore 117597
| | - James Chen Yong Kah
- Department of Biomedical Engineering, National University of Singapore , 4 Engineering Drive 3, Blk E4, #04-08, Singapore 117583
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences (CeLS) , #05-01, 28 Medical Drive, Singapore 117456
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138
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Epidemiology of 45,616 suspect cases of Hand, Foot and Mouth Disease in Chongqing, China, 2011-2015. Sci Rep 2017; 7:45630. [PMID: 28422128 PMCID: PMC5395817 DOI: 10.1038/srep45630] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 03/01/2017] [Indexed: 12/19/2022] Open
Abstract
Epidemiology and etiology of hand, foot, and mouth disease (HFMD) based on large sample size or evaluation of detection for more enterovirus serotypes are not well investigated in Chongqing of China. 45,616 suspect HFMD patients were prospectively enrolled among whom 21,615 were laboratory confirmed HFMD cases over a 5-year period (January 2011 to December 2015). Their epidemiological, clinical, and laboratory data were extracted and stratified by month, age, sex, disease severity, and enterovirus serotype. Subsequently 292 non-EV-A71/CV-A16 HFMD confirmed cases were randomly selected in three consecutive outbreaks to detect CV-A6 and CV-A10, using RT-PCR. Results showed that the HFMD epidemic peaked in early summer and autumn. The median age of onset was 2.45 years with a male-to-female ratio of 1.54:1, and with children under 5 years of age accounting for 92.54% of all confirmed cases. EV-A71 and CV-A16 infection accounted for only 36.05% (7793/21615) of total confirmed cases while EV-A71 accounted for 59.64% (232/389) of severe cases. Importantly, the proportion of EV-A71 infection generally increased with age which showed rapid growth in severe cases. CV-A6 and CV-A10 were tested positive in Chongqing, but CV-A6 had greater positive rates of 62.33% while CV-A10 had 4.79% in non-EV-A71/CV-A16 HFMD confirmed cases.
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139
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Effective in vivo therapeutic IgG antibody against VP3 of enterovirus 71 with receptor-competing activity. Sci Rep 2017; 7:46402. [PMID: 28422137 PMCID: PMC5395816 DOI: 10.1038/srep46402] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 03/17/2017] [Indexed: 11/23/2022] Open
Abstract
Passive immunization is an effective option for treatment against hand, foot and mouth disease caused by EV71, especially with cross-neutralizing IgG monoclonal antibodies. In this study, an EV71-specific IgG2a antibody designated 5H7 was identified and characterized. 5H7 efficiently neutralizes the major EV71 genogroups (A, B4, C2, C4). The conformational epitope of 5H7 was mapped to the highly conserved amino acid position 74 on VP3 capsid protein using escape mutants. Neutralization with 5H7 is mediated by the inhibition of viral attachment, as revealed by virus-binding and post-attachment assays. In a competitive pull-down assay with SCARB2, 5H7 blocks the receptor-binding site on EV71 for virus neutralization. Passive immunization of chimeric 5H7 protected 100% of two-week-old AG129 mice from lethal challenge with an EV71 B4 strain for both prophylactic and therapeutic treatments. In contrast, 10D3, a previously reported neutralizing antibody that takes effect after virus attachment, could only confer prophylactic protection. These results indicate that efficient interruption of viral attachment is critical for effective therapeutic activity with 5H7. This report documents a novel universal neutralizing IgG antibody for EV71 therapeutics and reveals the underlying mechanism.
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140
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Yee PTI, Laa Poh C. Impact of genetic changes, pathogenicity and antigenicity on Enterovirus- A71 vaccine development. Virology 2017; 506:121-129. [PMID: 28384566 DOI: 10.1016/j.virol.2017.03.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 01/17/2023]
Abstract
Enterovirus-A71 (EV-A71) is an etiological agent of the hand, foot and mouth disease (HFMD). EV-A71 infection produces high fever and ulcers in children. Some EV-A71 strains produce severe infections leading to pulmonary edema and death. Although the protective efficacy of the inactivated vaccine (IV) was ≥90% against mild HFMD, there was approximately 80% protection against severe HFMD. The monovalent EV-A71 IV elicits humoral immunity but lacks long-term immunogenicity. Spontaneous mutations of the EV-A71 genome could lead to antigenicity changes and the virus may not be neutralized by antibodies elicited by the IV. A better alternative would be the live attenuated vaccine (LAV) that elicits cellular and humoral immunity. The LAV induces excellent antigenicity and chances of reversion is reduced by presence of multiple mutations which could reduce pathogenicity. Besides CV-A16, outbreaks have been caused by CV-A6 and CV-A10, hence the development of bivalent and trivalent vaccines is required.
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Affiliation(s)
- Pinn Tsin Isabel Yee
- Research Centre for Biomedical Sciences, Sunway University, Bandar Sunway, Kuala Lumpur, Selangor 47500, Malaysia.
| | - Chit Laa Poh
- Research Centre for Biomedical Sciences, Sunway University, Bandar Sunway, Kuala Lumpur, Selangor 47500, Malaysia.
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141
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Wang Y, Cao L, Zhai Y, Ma J, Nie Q, Li T, Yin Z, Sun Y, Shang L. Inhibition of enterovirus 71 replication by an α-hydroxy-nitrile derivative NK-1.9k. Antiviral Res 2017; 141:91-100. [PMID: 28063993 DOI: 10.1016/j.antiviral.2017.01.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 01/02/2017] [Indexed: 11/26/2022]
Abstract
Enterovirus 71 (EV71) is one of the major etiological agents of human hand-foot-and-mouth disease (HFMD) worldwide. EV71 infection in young children and people with immunodeficiency causes severe symptoms with a high fatality rates. However, there is still no approved drugs to treat such infections. Based on our previous report of a peptide-aldehyde anti-EV71 protease, we present here a highly specific α-hydroxy-nitrile derivative NK-1.9k, which inhibited the proliferation of multiple EV71 strains and coxsackievirus A16 (CVA16) in various cells with EC50 of 37.0 nM with low cytotoxicity (CC50 > 200 μM). The hydroxy-nitrile covalent warhead conferred NK-1.9k high potency and selectivity to interact with the cysteine residue of the active site of the viral protease. We also documented the resistance to NK-1.9k with a N69S mutation in EV71 3Cpro. The combination of NK-1.9k and EV71 polymerase or entry inhibitors produced strong synergistic antiviral effects. Collectively, our findings suggest our compounds can potentially be developed as drugs for the treatment of HFMD.
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Affiliation(s)
- Yaxin Wang
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China; National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China
| | - Lin Cao
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Yangyang Zhai
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Jiaming Ma
- The High School Affiliated to Renmin University of China, Beijing, China
| | - Quandeng Nie
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Ting Li
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Zheng Yin
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Yuna Sun
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, China.
| | - Luqing Shang
- College of Pharmacy & State Key Laboratory of Medicinal Chemical Biology & Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China.
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142
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Zhu Z, Ye X, Ku Z, Liu Q, Shen C, Luo H, Luan H, Zhang C, Tian S, Lim C, Huang Z, Wang H. Transcutaneous immunization via rapidly dissolvable microneedles protects against hand-foot-and-mouth disease caused by enterovirus 71. J Control Release 2016; 243:291-302. [DOI: 10.1016/j.jconrel.2016.10.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 10/21/2016] [Accepted: 10/23/2016] [Indexed: 02/07/2023]
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143
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Wang XF, Dong WF, Dai T. Early risk indicators for hand, foot and mouth disease clusters in China. Infect Dis (Lond) 2016; 49:312-314. [PMID: 27684557 DOI: 10.1080/23744235.2016.1236289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Xiao-Fang Wang
- Department of Preschool Health, Shanghai Normal University, Shanghai, China
| | - Wen-Fang Dong
- Department of Pediatrics, Shanghai Children’s Medical Center, Shanghai, China
| | - Ting Dai
- Department of Infectious Diseases and Dermatology, Xuhui Central Hospital, Shanghai, China
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144
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Coxsackievirus A16 induced neurological disorders in young gerbils which could serve as a new animal model for vaccine evaluation. Sci Rep 2016; 6:34299. [PMID: 27667023 PMCID: PMC5035925 DOI: 10.1038/srep34299] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 09/09/2016] [Indexed: 11/09/2022] Open
Abstract
Coxsackievirus A16 (CA16) is one of the major pathogens associated with human hand, foot, and mouth disease (HFMD) in the Asia-pacific region. Although CA16 infections are generally mild, severe neurological manifestations or even death has been reported. Studies on CA16 pathogenesis and vaccine development are severely hampered because the small animal models that are currently available show major limitations. In this study, gerbils (Meriones unguiculatus) were investigated for their suitability as an animal model to study CA16 pathogenesis and vaccine development. Our results showed that gerbils up to the age of 21 days were fully susceptible to CA16 and all died within five days post-infection. CA16 showed a tropism towards the skeletal muscle, spinal cord and brainstem of gerbils, and severe lesions, including necrosis, were observed. In addition, an inactivated CA16 whole-virus vaccine administrated to gerbils was able to provide full protection to the gerbils against lethal doses of CA16 strains. These results demonstrate that gerbils are a suitable animal model to study CA16 infection and vaccine development.
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145
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Quantitative Proteomic Analysis of Escherichia coli Heat-Labile Toxin B Subunit (LTB) with Enterovirus 71 (EV71) Subunit VP1. Int J Mol Sci 2016; 17:ijms17091419. [PMID: 27618897 PMCID: PMC5037698 DOI: 10.3390/ijms17091419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/17/2016] [Accepted: 08/23/2016] [Indexed: 02/06/2023] Open
Abstract
The nontoxic heat-labile toxin (LT) B subunit (LTB) was used as mucosal adjuvant experimentally. However, the mechanism of LTB adjuvant was still unclear. The LTB and enterovirus 71 (EV71) VP1 subunit (EVP1) were constructed in pET32 and expressed in E. coli BL21, respectively. The immunogenicity of purified EVP1 and the adjuvanticity of LTB were evaluated via intranasal immunization EVP1 plus LTB in Balb/c mice. In order to elucidate the proteome change triggered by the adjuvant of LTB, the proteomic profiles of LTB, EVP1, and LTB plus EVP1 were quantitatively analyzed by iTRAQ-LC-MS/MS (isobaric tags for relative and absolute quantitation; liquid chromatography-tandem mass spectrometry) in murine macrophage RAW264.7. The proteomic data were analyzed by bioinformatics and validated by western blot analysis. The predicted protein interactions were confirmed using LTB pull-down and the LTB processing pathway was validated by confocal microscopy. The results showed that LTB significantly boosted EVP1 specific systematic and mucosal antibodies. A total of 3666 differential proteins were identified in the three groups. Pathway enrichment of proteomic data predicted that LTB upregulated the specific and dominant MAPK (mitogen-activated protein kinase) signaling pathway and the protein processing in endoplasmic reticulum (PPER) pathway, whereas LTB or EVP1 did not significantly upregulate these two signaling pathways. Confocal microscopy and LTB pull-down assays confirmed that the LTB adjuvant was endocytosed and processed through endocytosis (ENS)-lysosomal-endoplasmic reticulum (ER) system.
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146
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Epidemiological features and spatio-temporal clusters of hand-foot-mouth disease at town level in Fuyang, Anhui Province, China (2008-2013). Epidemiol Infect 2016; 144:3184-3197. [PMID: 27477953 DOI: 10.1017/s0950268816001710] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hand-foot-mouth disease (HFMD) is a frequently occurring epidemic and has been an important cause of childhood mortality in China. Given the disease's significant impact nationwide, the epidemiological characteristics and spatio-temporal clusters in Fuyang from 2008 to 2013 were analysed in this study. The disease exhibits strong seasonality with a rising incidence. Of the reported HFMD cases, 63·7% were male and 95·2% were preschool children living at home. The onset of HFMD is age-dependent and exhibits a 12-month periodicity, with 12-, 24- and 36-month-old children being the most frequently affected groups. Across the first 60 months of life, children born in April [relative risk (RR) 8·18], May (RR 9·79) and June (RR 8·21) exhibited an elevated infection risk of HFMD relative to January-born children; the relative risk compared with the reference (January-born) group was highest for children aged 24 months born in May (RR 34·85). Of laboratory-confirmed cases, enterovirus 71 (EV71), coxsackie A16 (Cox A16) and other enteroviruses accounted for 60·1%, 7·1% and 32·8%, respectively. Spatio-temporal analysis identified one most likely cluster and several secondary clusters each year. The centre of the most likely cluster was found in different regions in Fuyang. Implications of our findings for current and future public health interventions are discussed.
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147
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Optimization of a Class of Tryptophan Dendrimers That Inhibit HIV Replication Leads to a Selective, Specific, and Low-Nanomolar Inhibitor of Clinical Isolates of Enterovirus A71. Antimicrob Agents Chemother 2016; 60:5064-7. [PMID: 27246775 DOI: 10.1128/aac.00626-16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/25/2016] [Indexed: 12/14/2022] Open
Abstract
Tryptophan dendrimers that inhibit HIV replication by binding to the HIV envelope glycoproteins gp120 and gp41 have unexpectedly also proven to be potent, specific, and selective inhibitors of the replication of the unrelated enterovirus A71. Dendrimer 12, a consensus compound that was synthesized on the basis of the structure-activity relationship analysis of this series, is 3-fold more potent against the BrCr lab strain and, surprisingly, inhibits a large panel of clinical isolates in the low-nanomolar/high-picomolar range.
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148
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Kim BI, Ki H, Park S, Cho E, Chun BC. Effect of Climatic Factors on Hand, Foot, and Mouth Disease in South Korea, 2010-2013. PLoS One 2016; 11:e0157500. [PMID: 27285850 PMCID: PMC4902224 DOI: 10.1371/journal.pone.0157500] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/31/2016] [Indexed: 11/23/2022] Open
Abstract
Hand, foot, and mouth disease (HFMD) causes characteristic blisters and sores mainly in infants and children, and has been monitored in South Korea through sentinel surveillance since 2009. We described the patterns of HFMD occurrence and analyzed the effect of climatic factors on national HFMD incidence. Weekly clinically diagnosed HFMD case rates (per 1,000 outpatients) in sentinel sites and weekly climatic factors, such as average temperature, relative humidity, duration of sunshine, precipitation, and wind speed from 2010 to 2013, were used in this study. A generalized additive model with smoothing splines and climatic variables with time lags of up to 2 weeks were considered in the modeling process. To account for long-term trends and seasonality, we controlled for each year and their corresponding weeks. The autocorrelation issue was also adjusted by using autocorrelation variables. At an average temperature below 18°C, the HFMD rate increased by 10.3% for every 1°C rise in average temperature (95% confidence interval (CI): 8.4, 12.3%). We also saw a 6.6% increase in HFMD rate (95% CI: 3.6, 9.7%) with every 1% increase in relative humidity under 65%, with a 1.5% decrease in HFMD rate observed (95% CI: 0.4, 2.7%) with each 1% humidity increase above 65%. Modeling results have shown that average temperature and relative humidity are related to HFMD rate. Additional research on the environmental risk factors of HFMD transmission is required to understand the underlying mechanism between climatic factors and HFMD incidence.
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Affiliation(s)
- Bryan Inho Kim
- Division of Infectious Disease Surveillance, Korea Centers for Disease Control and Prevention, Chungcheongbuk-do, Republic of Korea
- Department of Epidemiology and Medical Informatics, School of Public Health, Korea University, Seoul, Republic of Korea
| | - Hyunok Ki
- Division of Infectious Disease Surveillance, Korea Centers for Disease Control and Prevention, Chungcheongbuk-do, Republic of Korea
| | - Sunhee Park
- Division of Infectious Disease Surveillance, Korea Centers for Disease Control and Prevention, Chungcheongbuk-do, Republic of Korea
| | - Eunhi Cho
- Division of Infectious Disease Surveillance, Korea Centers for Disease Control and Prevention, Chungcheongbuk-do, Republic of Korea
| | - Byung Chul Chun
- Department of Epidemiology and Medical Informatics, School of Public Health, Korea University, Seoul, Republic of Korea
- * E-mail:
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149
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Zhou Y, Li JX, Jin PF, Wang YX, Zhu FC. Enterovirus 71: a whole virion inactivated enterovirus 71 vaccine. Expert Rev Vaccines 2016; 15:803-13. [PMID: 27206811 DOI: 10.1080/14760584.2016.1191357] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Enterovirus A71 (EV71) is the predominant causative agent of hand, foot, and mouth disease (HFMD), which is often associated with severe cases and even deaths. EV71-associated epidemics have emerged as a serious threat to public health, particularly in the Asia-Pacific region. AREAS COVERED We searched PubMed using the terms 'enterovirus 71', 'hand, foot, and mouth disease', and 'vaccine', with no date or language restrictions for all publications before April 27, 2016. Among various vaccine candidates, the alum-adjuvant inactivated EV71 vaccines are most promising. Three alum-adjuvant inactivated EV71 vaccines developed by mainland China showed high efficacy, good immunogenicity persistence and acceptable safety profiles in clinical trials. Recently, two of these EV71 vaccines have been approved for marketing in China and the other one is undergoing the review process of licensure. In this manuscript, we summarized previous study results as well as discussed the regulatory affairs and post-market surveillances issues. Expert commentary: The marketing of EV71 vaccines is a milestone in the controlling of HFMD. International clinical trials are needed to further assess the efficacy and cross-immunogenicity. Establishing a sensitive pathogen monitoring system would be essential to monitor the variation of genotypes and control HFMD epidemics.
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Affiliation(s)
- Yang Zhou
- a School of Public Health , Southeast University , Nanjing , PR China
| | - Jing-Xin Li
- b Department of Vaccine Clinical Evaluation , Jiangsu Provincial Center for Disease Control and Prevention , Nanjing , PR China.,c College of Pharmacy , Third Military Medical University & National Engineering Research Center for Immunological Products , Chongqing , PR China
| | - Peng-Fei Jin
- d School of Public Health , Nanjing Medical University , Nanjing , PR China
| | - Yu-Xiao Wang
- a School of Public Health , Southeast University , Nanjing , PR China
| | - Feng-Cai Zhu
- b Department of Vaccine Clinical Evaluation , Jiangsu Provincial Center for Disease Control and Prevention , Nanjing , PR China
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Full-Genome Sequences of Seven Fatal Enterovirus 71 Strains Isolated in Shenzhen, China, in 2014. GENOME ANNOUNCEMENTS 2016; 4:4/2/e00316-16. [PMID: 27125487 PMCID: PMC4850858 DOI: 10.1128/genomea.00316-16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The whole-genome sequences of seven fatal enterovirus 71 (EV71) strains, isolated in southern China, in 2014, were determined. The complete genome sequences of these strains displayed close relationships to native EV71 strains and showed 94.2% to 99.8% identity to each other. All of these strains were assigned to subgenotype C4a based on phylogenetic analysis of the VP1 gene.
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