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https://www.readbyqxmd.com/read/28447721/clinical-significance-of-inflammatory-cytokine-and-chemokine-expression-in-hand-foot-and-mouth-disease
#1
Ping Shao, Xiaoxin Wu, Hongbo Li, Zhigang Wu, Zongxin Yang, Hangping Yao
The present study examined the relationship between cytokine and chemokine expression and the clinical presentation of hand, foot and mouth disease (HFMD), which is currently unclear. The present study involved 28 patients with mild HFMD, 44 patients with severe HFMD and 26 healthy children. Venous blood was tested for cytokine [interleukin (IL)‑4, IL‑12, IL‑18, tumor necrosis factor‑α (TNF‑α), interferon‑γ (IFN‑γ)] and chemokine expression [IL‑8, regulated on activation, normal T cell expressed and secreted (RANTES), monocyte chemoattractant protein‑1 (MCP‑1) and IFN-γ-inducible protein‑10 (IP‑10)]...
March 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447294/the-binding-of-a-monoclonal-antibody-to-the-apical-region-of-scarb2-blocks-ev71-infection
#2
Xuyuan Zhang, Pan Yang, Nan Wang, Jialong Zhang, Jingyun Li, Hao Guo, Xiangyun Yin, Zihe Rao, Xiangxi Wang, Liguo Zhang
Entero virus 71 (EV71) causes hand, foot, and mouth disease (HFMD) and occasionally leads to severe neurological complications and even death. Scavenger receptor class B member 2 (SCARB2) is a functional receptor for EV71, that mediates viral attachment, internalization, and uncoating. However, the exact binding site of EV71 on SCARB2 is unknown. In this study, we generated a monoclonal antibody (mAb) that binds to human but not mouse SCARB2. It is named JL2, and it can effectively inhibit EV71 infection of target cells...
April 26, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28445307/alteration-of-serum-high-mobility-group-protein-1-hmgb1-levels-in-children-with-enterovirus-71-induced-hand-foot-and-mouth-disease
#3
Weikun Zheng, Haifan Shi, Yiping Chen, Zhiwei Xu, Jie Chen, Longteng Jin
Hand, foot, and mouth disease (HFMD) is a common pediatric disease caused by enterovirus infection. It typically presents as a fever along with flat, discolored spots and bumps on the hands, feet, and mouth. Compared with other viruses, enterovirus 71 (EV71)-induced HFMD is more prone to cause severe complications in children, such as brainstem encephalitis, cardiopulmonary disorders, and even death. More in-depth studies are still necessary to understand the characteristics of EV71-induced HFMD, although some related research has been reported so far...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444539/association-of-the-oas3-rs1859330-g-a-genetic-polymorphism-with-severity-of-enterovirus-71-infection-in-chinese-han-children
#4
Yuxia Tan, Tingting Yang, Peipei Liu, Liping Chen, Qingwu Tian, Ya Guo, Hongfang He, Yedan Liu, Zongbo Chen
The 2'5'-oligoadenylate synthetase (OAS) is an interferon (IFN)-induced protein that plays an important role in the antiviral action of IFN, with OAS3 being one of the four OAS classes (OAS1, OAS2, OAS3, OASL). The effect of OAS on several infectious viral diseases has been reported; however, a study of the effect of OAS3 on enterovirus 71 (EV71) is lacking. The purpose of this study was to evaluate the association of the OAS3 rs1859330 G/A genetic polymorphism with susceptibility and severity of EV71 infection...
April 25, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28442520/development-and-application-of-a-duplex-real-time-rt-pcr-assay-for-simultaneous-detection-of-coxsackievirus-a6-and-coxsackievirus-a10
#5
Peiyan He, Yongxiang Li, Jianyong Luo, Henghui Wang, Yong Yan, Zhongwen Chen
Hand, foot and mouth disease (HFMD) is a serious public health problem. Generally, it is considered that HFMD is mainly caused by enterovirus 71 (EV71) and coxsackievirus A16 (CVA16). Nevertheless, the incidence of HFMD caused by coxsackievirus A6 (CVA6) and coxsackievirus A10 (CVA10) has increased significantly and CVA6 and CVA10 have become major causes of HFMD epidemic. This study develops a duplex real-time reverse transcript polymerase chain reaction (RT-PCR) assay for simultaneous detection of CVA 6 and CVA 10...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28428548/antiviral-activities-of-schizonepeta-tenuifolia-briq-against-enterovirus-71-in-vitro-and-in-vivo
#6
Sin-Guang Chen, Mei-Ling Cheng, Kuan-Hsing Chen, Jim-Tong Horng, Ching-Chuan Liu, Shih-Min Wang, Hiroaki Sakurai, Yann-Lii Leu, Shulhn-Der Wang, Hung-Yao Ho
No effective drug is currently available for treatment of enterovirus 71 (EV71) infection. Schizonepeta tenuifolia Briq. (ST) has been used as a herbal constituent of traditional Chinese medicine. We studied whether the aqueous extract of Schizonepeta tenuifolia Briq (STE) has antiviral activity. STE inhibited replication of EV71, as evident by its ability to diminish plaque formation and cytopathic effect induced by EV71, and to inhibit the synthesis of viral RNA and protein. Moreover, daily single-dose STE treatment significantly improved the survival of EV71-infected mice, and ameliorated the symptoms...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427827/antiviral-screen-identifies-ev71-inhibitors-and-reveals-camptothecin-target-dna-topoisomerase-1-as-a-novel-ev71-host-factor
#7
Kan Xing Wu, Justin Jang-Hann Chu
Enterovirus 71 (EV71) is one of the causative agents of hand, foot and mouth disease (HFMD) associated with severe neurological disease. EV71's pathogenesis remains poorly understood and the lack of approved antiviral has led to its emergence as a clinically important neurotropic virus. The goals of this study were to: (i) identify novel anti-EV71 compounds that may serve as lead molecules for therapeutics; and (ii) investigate their targets in downstream studies. We screened a 502-compound library of highly purified natural products for anti-EV71 activities in a cell-based immunofluorescence assay that were then confirmed in viral plaque reduction assays...
April 17, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28422137/effective-in-vivo-therapeutic-igg-antibody-against-vp3-of-enterovirus-71-with-receptor-competing-activity
#8
Qiang Jia, Qingyong Ng, Wenjie Chin, Tao Meng, Vincent Tak Kwong Chow, Cheng-I Wang, Jimmy Kwang, Fang He
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...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28414218/exploiting-the-anti-aggregation-of-gold-nanostars-for-rapid-detection-of-hand-foot-and-mouth-disease-causing-enterovirus-71-using-surface-enhanced-raman-spectroscopy
#9
Miguel Reyes, Marek Piotrowski, Swee Kim Ang, Jingqi Chan, Shuai He, Justin Jang Hann Chu, James Chen Yong Kah
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...
April 26, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28414215/highly-sensitive-naked-eye-assay-for-enterovirus-71-detection-based-on-catalytic-nanoparticle-aggregation-and-immunomagnetic-amplification
#10
Ling-Hong Xiong, Xuewen He, Junjie Xia, Hanwu Ma, Fan Yang, Qian Zhang, Dana Huang, Long Chen, Chunli Wu, Xiaomin Zhang, Zheng Zhao, Chengsong Wan, Renli Zhang, Jinquan Cheng
Development of sensitive, convenient, and cost-effective virus detection product is of great significance to meet the growing demand of clinical diagnosis at the early stage of virus infection. Herein, a naked-eye readout of immunoassay by means of virion bridged catalase-mediated in situ reduction of gold ions and growth of nanoparticles, has been successfully proposed for rapid visual detection of Enterovirus 71 (EV71). Through tailoring the morphologies of the produced gold nanoparticles (GNPs) varying between dispersion and aggregation, a distinguishing color changing was ready for observation...
April 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28413485/therapeutic-efficacy-of-phentolamine-in-the-management-of-severe-hand-foot-and-mouth-disease-combined-with-pulmonary-edema
#11
Zhixin Yan, Yaokai Shang, Fengxian Li, Fei Xie, Huili Qian, Youqi Zhang, Bin Yue
The aim of this study was to examine the effects of phentolamine on severe hand, foot and mouth disease (HFMD) combined with pulmonary edema (PE). From May 2008 to December 2012, 53 children with severe HFMD plus PE were enrolled in the treatment group, receiving phentolamine intravenously at a loading dose of 5 µg/kg/min. The control group comprised 52 children with the same disease who did not receive phentolamine infusion. Data concerning creatine kinase (CK), CK-MB, cardiac troponin I (cTnI), heart rate, systolic blood pressure (SBP) and the duration of ventilation dependence and hospitalization were collected...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28408118/a-novel-combined-vaccine-based-on-monochimeric-vlp-co-displaying-multiple-conserved-epitopes-against-enterovirus-71-and-varicella-zoster-virus
#12
Yangtao Wu, Rui Zhu, Longfa Xu, Yongchao Li, Shuxuan Li, Hai Yu, Shaowei Li, Hua Zhu, Tong Cheng, Ningshao Xia
Chicken pox and hand, foot and mouth disease (HFMD) are two major infectious diseases that mainly affect infants and children, causing significant morbidity annually. Varicella-zoster virus (VZV) and enterovirus 71 (EV71), respectively, are the principal epidemic pathogens causing these two diseases. To investigate the possibility of developing a novel combined vaccine to prevent chicken pox and HFMD, we constructed three chimeric virus-like particles (VLPs) (termed HBc-V/1/2, HBc-2/V/1 and HBc-1/2/V) based on the hepatitis B core antigen (HBc) carrier that display epitopes derived from VZV-gE, EV71-VP1, and EV71-VP2 in a varied tandem manner...
May 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28399485/interleukin-18-protects-mice-from-enterovirus-71-infection
#13
Zheng Li, Hongbin Wang, Yihui Chen, Junling Niu, Qiuhong Guo, Qibin Leng, Zhong Huang, Zhirui Deng, Guangxun Meng
Previous study has demonstrated that the NLRP3 inflammasome is essential for protecting murine host against Enterovirus 71 (EV71) infection. However, the underlying mechanism remained unknown. Here we discovered that the pleiotropic cytokine interleukin-18 (IL-18), an NLRP3 inflammasome-dependent effector protein, exhibits a protective capability against EV71 challenge. Deficiency of IL-18 in mice exacerbated EV71 infection, which was reflected by increased viral replication, elevated production of interferons (IFN-β, IFN-γ), proinflammatory cytokines (TNF-α, IL-6) and chemokine CCL2,as well as decreased survival of experimental animals...
April 8, 2017: Cytokine
https://www.readbyqxmd.com/read/28391724/usp19-suppresses-cellular-type-i-interferon-signaling-by-targeting-traf3-for-deubiquitination
#14
Zhiwen Gu, Weifeng Shi, Li Zhang, Zhilin Hu, Chao Xu
AIM: To investigate host factors that mediate the immune escape of enterovirus 71 (EV71) in the context of deubiquitinating enzymes. MATERIALS & METHODS: Utilize PCR array to screen candidate genes that may be involved in EV71-induced cellular antiviral immune responses, and utilize protein mass spectrometry analysis to identify the functional targets of the candidate regulator. RESULTS: EV71 infection induces the upregulation of ubiquitin-specific protease 19 (USP19) gene expression, which negatively regulates cellular antiviral type I interferon signaling...
April 10, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28367766/epidemics-and-aetiology-of-hand-foot-and-mouth-disease-in-xiamen-china-from-2008-to-2015
#15
S Z He, M Y Chen, X R Xu, Q Yan, J J Niu, W H Wu, X S Su, S X Ge, S Y Zhang, N S Xia
Over the past 8 years, human enteroviruses (HEVs) have caused 27 227 cases of hand, foot and mouth disease (HFMD) in Xiamen, including 99 severe cases and six deaths. We aimed to explore the molecular epidemiology of HFMD in Xiamen to inform the development of diagnostic assays, vaccines and other interventions. From January 2009 to September 2015, 5866 samples from sentinel hospitals were tested using nested reverse transcription PCR that targeted the HEV 5' untranslated region and viral protein 1 region. Of these samples, 4290 were tested positive for HEV and the amplicons were sequenced and genotyped...
April 3, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28327506/efficacy-and-safety-evaluation-of-a-chlorine-dioxide-solution
#16
Jui-Wen Ma, Bin-Syuan Huang, Chu-Wei Hsu, Chun-Wei Peng, Ming-Long Cheng, Jung-Yie Kao, Tzong-Der Way, Hao-Chang Yin, Shan-Shue Wang
In this study, a chlorine dioxide solution (UC-1) composed of chlorine dioxide was produced using an electrolytic method and subsequently purified using a membrane. UC-1 was determined to contain 2000 ppm of gaseous chlorine dioxide in water. The efficacy and safety of UC-1 were evaluated. The antimicrobial activity was more than 98.2% reduction when UC-1 concentrations were 5 and 20 ppm for bacteria and fungi, respectively. The half maximal inhibitory concentrations (IC50) of H1N1, influenza virus B/TW/71718/04, and EV71 were 84...
March 22, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28303920/the-golgi-protein-acbd3-facilitates-enterovirus-71-replication-by-interacting-with-3a
#17
Xiaobo Lei, Xia Xiao, Zhenzhen Zhang, Yijie Ma, Jianli Qi, Chao Wu, Yan Xiao, Zhuo Zhou, Bin He, Jianwei Wang
Enterovirus 71 (EV71) is a human pathogen that causes hand, foot, mouth disease and neurological complications. Although EV71, as well as other enteroviruses, initiates a remodeling of intracellular membrane for genomic replication, the regulatory mechanism remains elusive. By screening human cDNA library, we uncover that the Golgi resident protein acyl-coenzyme A binding domain-containing 3 (ACBD3) serves as a target of the 3A protein of EV71. This interaction occurs in cells expressing 3A or infected with EV71...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28262332/report-from-the-world-health-organization-s-third-product-development-for-vaccines-advisory-committee-pdvac-meeting-geneva-8-10th-june-2016
#18
Birgitte K Giersing, Johan Vekemans, Samantha Nava, David C Kaslow, Vasee Moorthy
The third meeting of WHO's Product Development for Vaccines Advisory Committee (PDVAC) was held in June 2016, with a remit to revisit the pathogen areas for which significant progress has occurred since recommendations from the 2015 meeting, as well as to consider new advances in the development of vaccines against other pathogens. Since the previous meeting, significant progress has been made with regulatory approvals of the first malaria and dengue vaccines, and the first phase III trials of a respiratory syncytial virus (RSV) vaccine candidate has started in the elderly and pregnant women...
March 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28248924/microrna-screening-identifies-mir-134-as-a-regulator-of-poliovirus-and-enterovirus-71-infection
#19
Nichole Lynn Orr-Burks, Byoung-Shik Shim, Weilin Wu, Abhijeet A Bakre, Jon Karpilow, Ralph A Tripp
MicroRNAs (miRNAs) regulate virus replication through multiple mechanisms. Poliovirus causes a highly debilitating disease and though global efforts to eradicate polio have sharply decreased polio incidence, unfortunately three countries (Afghanistan, Nigeria and Pakistan) remain polio-endemic. We hypothesize that understanding the host factors involved in polio replication will identify novel prophylactic and therapeutic targets against polio and related viruses. In this data set, employing genome wide screens of miRNA mimics and inhibitors, we identified miRNAs which significantly suppressed polio replication...
March 1, 2017: Scientific Data
https://www.readbyqxmd.com/read/28236071/recombinant-heat-shock-protein-78-enhances-enterovirus-71-propagation-in-vero-cells-and-is-induced-in-sk-n-sh-cells-during-the-infection
#20
Bing Zhu, Tiantian Xu, Zhengfang Lin, Changbing Wang, Yinghua Li, Mingqi Zhao, Liang Hua, Misi Xiao, Ning Deng
Enterovirus 71 (EV71) is one of the major causative agents of hand, foot and mouth disease (HFMD), which mainly occurs in children. Children with EV71 infection can develop severe neurological diseases. Heat shock protein 78 (HSP78) facilitates proper protein folding during viral propagation and is induced during virus infection. Nevertheless, the role that HSP78 plays during EV71 infection is still unclear. In this study, recombinant HSP78 protein was expressed in a prokaryotic expression system and used for exploring the interaction between HSP78 and EV71 propagation...
February 24, 2017: Archives of Virology
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