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Hand foot and mouth disease

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https://www.readbyqxmd.com/read/28724943/aim2-inflammasome-mediated-pyroptosis-in-enterovirus-a71-infected-neuronal-cells-restricts-viral-replication
#1
Thinesshwary Yogarajah, Kien Chai Ong, David Perera, Kum Thong Wong
Encephalomyelitis is a well-known complication of hand, foot, and mouth disease (HFMD) due to Enterovirus 71 (EV71) infection. Viral RNA/antigens could be detected in the central nervous system (CNS) neurons in fatal encephalomyelitis but the mechanisms of neuronal cell death is not clearly understood. We investigated the role of absent in melanoma 2 (AIM2) inflammasome in neuronal cell death, and its relationship to viral replication. Our transcriptomic analysis, RT-qPCR, Western blot, immunofluorescence and flow cytometry studies consistently showed AIM2 gene up-regulation and protein expression in EV-A71-infected SK-N-SH cells...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724375/bilateral-idiopathic-retinal-vasculitis-following-coxsackievirus-a4-infection-a-case-report
#2
Izumi Mine, Manzo Taguchi, Yutaka Sakurai, Masaru Takeuchi
BACKGROUND: Coxsackieviruses are members of a group of viruses called the enteroviruses, which may cause respiratory and gastrointestinal symptoms, erythema, meningoencephalitis, myocarditis, pericarditis, and myositis. Unilateral acute idiopathic maculopathy caused by coxsackievirus A16 has been associated with hand, foot, and mouth disease, but only a few reports describe retinitis associated with coxsackievirus serotype B3 or B4. We report a case of bilateral multifocal obstructive retinal vasculitis that developed after coxsackievirus A4 infection...
July 19, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28712404/-polymorphisms-of-tlr7-rs3853839-and-rs179010-are-associated-with-susceptibility-to-and-severity-of-hand-foot-and-mouth-disease-caused-by-enterovirus-71-in-male-children
#3
Yaping Li, Song Zhai, Mei Li, Yuan Wang, Tong Lu, Huiling Deng, Xin Zhang, Shuangsuo Dang
Objective To investigate whether the polymorphisms of TLR7/MyD88 signaling pathway is associated with the susceptibility to and severity of hand, foot and mouth disease (HFMD) caused by enterovirus 71 (EV71) in children. Methods We collected 180 EV71 HFMD cases and 201 healthy controls from both the Second Affiliated Hospital of Xi'an Jiaotong University and Xi'an Children's Hospital. The genotypes including rs3853839, rs179010 of TLR7, and rs7744 of MyD88 were detected in the 381 samples by SNPscan kit. Results The susceptibility risk (OR=2...
July 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28710409/machine-learning-algorithms-for-risk-prediction-of-severe-hand-foot-mouth-disease-in-children
#4
Bin Zhang, Xiang Wan, Fu-Sheng Ouyang, Yu-Hao Dong, De-Hui Luo, Jing Liu, Long Liang, Wen-Bo Chen, Xiao-Ning Luo, Xiao-Kai Mo, Lu Zhang, Wen-Hui Huang, Shu-Fang Pei, Bao-Liang Guo, Chang-Hong Liang, Zhou-Yang Lian, Shui-Xing Zhang
The identification of indicators for severe HFMD is critical for early prevention and control of the disease. With this goal in mind, 185 severe and 345 mild HFMD cases were assessed. Patient demographics, clinical features, MRI findings, and laboratory test results were collected. Gradient boosting tree (GBT) was then used to determine the relative importance (RI) and interaction effects of the variables. Results indicated that elevated white blood cell (WBC) count > 15 × 10(9)/L (RI: 4(9).47, p < 0...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705680/characterization-of-significant-molecular-determinants-of-virulence-of-enterovirus-71-sub-genotype-b4-in-rhabdomyosarcoma-cells
#5
Pinn Tsin Isabel Yee, Reham Ahmed Hashim Mohamed, Seng-Kai Ong, Kuan Onn Tan, Chit Laa Poh
One of the leading causes of the hand, foot and mouth disease (HFMD) is Enterovirus 71 (EV-A71), displaying symptoms such as fever and ulcers in children but some strains can produce cardiopulmonary oedema which leads to death. There is no FDA-approved vaccine for prevention of severe HFMD. The molecular determinants of virulence for EV-A71 are unclear. It could be a single or a combination of amino acids that determines virulence in different EV-A71 genotype/sub-genotypes. Several EV-A71 strains bearing single nucleotide (nt) mutations were constructed and the contribution of each mutation to virulence was evaluated...
July 10, 2017: Virus Research
https://www.readbyqxmd.com/read/28704524/prevalence-of-enteroviruses-in-healthy-populations-and-excretion-of-pathogens-in-patients-with-hand-foot-and-mouth-disease-in-a-highly-endemic-area-of-southwest-china
#6
Qiang Wu, Xiaoqing Fu, Lili Jiang, Rusong Yang, Jianping Cun, Xiaofang Zhou, Yongming Zhou, Yibing Xiang, Wenpeng Gu, Jianhua Fan, Hong Li, Wen Xu
Etiological carriers and the excretion of the pathogens causing hand, foot, and mouth disease (HFMD) in healthy persons, patients, and asymptomatic persons infected with HFMD as ongoing infection sources may play an important role in perpetuating and spreading epidemics of HFMD. The aims of this study were to determine the carrier status of EV-A71 and CV-A16 in healthy populations, as well as the duration of EV-A71 and CV-A16 shedding in the stools of HFMD patients in an epidemic area of southwest China. A cross-sectional study and a follow-up study were conducted in three HFMD endemic counties of Yunnan Province...
2017: PloS One
https://www.readbyqxmd.com/read/28702377/dsrna-binding-domain-of-pkr-is-proteolytically-released-by-enterovirus-a71-to-facilitate-viral-replication
#7
Yu-Hsiu Chang, Kean Seng Lau, Rei-Lin Kuo, Jim-Tong Horng
Enterovirus 71 (EV-A71) causes hand, foot and mouth disease in young children and infants, but can also cause severe neurological complications or even death. The double-stranded RNA (dsRNA)-dependent protein kinase R (PKR), an interferon-induced antiviral protein, phosphorylates the regulatory α-subunit of the eukaryotic translation initiation factor 2 in response to viral infection, thereby blocking the translation of cellular and viral mRNA and promoting apoptosis. The cleavage of PKR after infection with poliovirus, a prototype enterovirus, has been reported by others, but the underlying mechanism of this cleavage and its role in viral replication remain unclear...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28698666/modelling-person-to-person-transmission-in-an-enterovirus-a71-orally-infected-hamster-model-of-hand-foot-and-mouth-disease-and-encephalomyelitis
#8
Win Kyaw Phyu, Kien Chai Ong, Kum Thong Wong
Enterovirus A71 (EV-A71) causes hand-foot-and-mouth disease (HFMD), which may be complicated by fatal encephalomyelitis. Although fecal-oral or oral-oral routes are important in person-to-person transmission, how viral shedding and exposure may predispose individuals to infection remains unknown. We investigated person-to-person transmission by using a model of HFMD and encephalomyelitis based on EV-A71 oral infection of 2-week-old hamsters. Animals (index animals) infected with 10(4) 50% cell culture infective doses of virus uniformly developed severe disease four days post-infection (dpi), whereas littermate contacts developed severe disease after six to seven days of exposure to index animals...
July 12, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/28692654/estimating-the-basic-reproduction-rate-of-hfmd-using-the-time-series-sir-model-in-guangdong-china
#9
Zhicheng Du, Wangjian Zhang, Dingmei Zhang, Shicheng Yu, Yuantao Hao
Hand, foot, and mouth disease (HFMD) has caused a substantial burden of disease in China, especially in Guangdong Province. Based on notifiable cases, we use the time series Susceptible-Infected-Recovered model to estimate the basic reproduction rate (R0) and the herd immunity threshold, understanding the transmission and persistence of HFMD more completely for efficient intervention in this province. The standardized difference between the reported and fitted time series of HFMD was 0.009 (<0.2). The median basic reproduction rate of total, enterovirus 71, and coxsackievirus 16 cases in Guangdong were 4...
2017: PloS One
https://www.readbyqxmd.com/read/28688753/antiviral-effects-of-retro-2-cycl-and-retro-2-1-against-enterovirus-71-in%C3%A2-vitro-and-in%C3%A2-vivo
#10
Wenwen Dai, Yu Wu, Jinpeng Bi, Xiaotong Lu, Ali Hou, Yan Zhou, Bo Sun, Wei Kong, Julien Barbier, Jean-Christophe Cintrat, Feng Gao, Daniel Gillet, Weiheng Su, Chunlai Jiang
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-2(cycl) 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...
July 5, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28681725/a-mild-phenotype-of-hand-foot-and-mouth-disease-caused-by-coxsackievirus-a6
#11
Mai Hattori, Akira Shimizu, Hiroyuki Tsukagoshi, Nobuhiro Saruki, Kyoichi Kaira, Tsukasa Ohkawa, Osamu Ishikawa
No abstract text is available yet for this article.
July 5, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28679757/enterovirus-71-inhibits-pyroptosis-through-cleavage-of-gsdmd
#12
Xiaobo Lei, Zhenzhen Zhang, Xia Xiao, Jianli Qi, Bin He, Jianwei Wang
Enterovirus 71 (EV71) can cause hand, foot, and mouth disease (HFMD) in young children. Severe infection with EV71 can lead to neurological complications and even death. However, the molecular basis of viral pathogenesis remain poorly understand. Here, we report that EV71 induces degradation of GSDMD, an essential component of pyroptosis. Remarkably, the viral protease 3C directly targets GSDMD and induces its cleavage, which is dependent on the protease activity. Further analyses show that the Q193-G194 pair within GSDMD is the cleavage site of 3C...
July 5, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28672946/enterovirus-71-infection-impairs-the-reproductive-capacity-of-female-mice
#13
Bo Qin, Qiuyue Yan, Xing Chen, Xiuping Xu, Yanan Wang, Jinkun Chen, Xuejun Dong
Enterovirus 71 (EV71) is a major cause of hand, foot and mouth disease (HFMD); however, no clinically approved vaccine or antiviral treatment is currently available for EV71 infection. In the present study, a murine model of EV71 infection was constructed. The clinical isolates of EV71 were amplified in Vero cells and used to challenge adult mice via hydrodynamic injection (HI) and intraperitoneal injection (IP). Following two challenges, >50% of the mice succumbed to EV71 infection. Surviving female mice were identified to have impaired fertility and their litter sizes were significantly decreased compared with the control group...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28662914/development-of-single-step-multiplex-real-time-rt-pcr-assays-for-rapid-diagnosis-of-enterovirus-71-coxsackievirus-a6-and-a16-in-patients-with-hand-foot-and-mouth-disease
#14
Jiratchaya Puenpa, Kamol Suwannakarn, Jira Chansaenroj, Sompong Vongpunsawad, Yong Poovorawan
Real-time reverse-transcription polymerase chain reaction (rRT-PCR) to detect enterovirus 71 (EV-A71) and coxsackievirus A16 (CV-A16) has facilitated the rapid and accurate identification of the two most common etiological agents underlying hand, foot, and mouth disease (HFMD). However, the worldwide emergence of CV-A6 infection in HFMD necessitates development of an improved multiplex rRT-PCR method. To rapidly determine the etiology of HFMD, two rRT-PCR assays using TaqMan probes were developed to differentiate among three selected common enteroviruses (EV-A71, CV-A16 and CV-A6) and to enable broad detection of enteroviruses (pan-enterovirus assay)...
June 27, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28659474/phylogeography-of-coxsackievirus-a16-reveals-global-transmission-pathways-and-recent-emergence-and-spread-of-a-recombinant-genogroup
#15
Chervin Hassel, Audrey Mirand, Agnes Farkas, Sabine Diedrich, Hartwig P Huemer, Hélène Peigue-Lafeuille, Christine Archimbaud, Cécile Henquell, Jean-Luc Bailly
Coxsackievirus A16 (CV-A16; Picornaviridae) is an enterovirus (EV) type associated with hand-foot-and-mouth disease (HFMD) in children. To investigate the spatial spread of CV-A16, we used viral sequence data sampled during a prospective sentinel surveillance of HFMD in France (2010--2014) and phylogenetic reconstruction. A dataset of 168 VP1 sequences was assembled with 416 publicly available sequences of various geographic origins. The CV-A16 sequences reported were assigned to two clades, genogroup B and a previously uncharacterized clade D...
June 28, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28651405/-clinical-stages-and-outcomes-of-severe-cases-on-hand-foot-and-mouth-disease
#16
J Zhang, Y Jin, J L Sun, Y X Wang, X J Wang, X Q Fu, Z P Miao, J Lyu
Objective: To understand the characteristics and relation of clinical stage and outcome of severe cases on hand, foot and mouth disease (HFMD) and to establish the evaluation method for understanding severity of this disease. Methods: According to factors as geographical location, economic and epidemic levels, five provinces (Henan, Shandong, Yunnan, Zhejiang and Sichuan provinces) were selected. Reported severe cases of HFMD from the National Notifiable Diseases Reporting System were selected randomly in the five provinces...
May 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28647978/-severe-cases-with-hand-foot-and-mouth-disease-data-based-on-national-pilot-hand-foot-and-mouth-disease-surveillance-system
#17
Y M Zheng, Z R Chang, L L Jiang, H Ji, G P Chen, P Luo, J J Pan, X L Tian, L L Wei, D Huo, Z P Miao, X N Zou, J H Chen, Q H Liao
Objective: To investigate the clinical severity, etiological classification and risk factors of severe cases with hand, foot and mouth disease (HFMD). Methods: A total of 1 489 records on severe and fatal HFMD cases reported to the national pilot surveillance system of HFMD were used to analyze the demographic, medical treatment, etiological classification of the cases. Treatment outcome related risk factors were also studied with multi-variable stepwise logistic regression method. Results: Seven out of the 1 489 severe HFMD cases died of this disease...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28647185/relationship-between-catecholamine-level-and-gene-polymorphism-of-%C3%AE-1-adrenergic-receptor-g1165c-in-children-with-ev71-infection-in-hand-foot-and-mouth-disease
#18
Zhi-Xian Lei, Bang-Tao Li, Hong-Ai Li, Xiao-Ming Li, Man-Fang Xie, Ting Huang, Qi Wang, Ya-Zhou Wang, Qiu-Yu Lin, Li-Rong Zhou, Nai-Chao Feng, Xin Li, Dao-Mou Zhu, Yuan-Ping Hai, Lan Cui, Ya-Qin Zhang, Zhi-Wen Liu, Shou-Ye Wu, Yong-Zhao Chen, Ke-Qing Zhu, Xiao-Jie He, Wei Xiang
OBJECTIVE: To investigate the relationship between the levels of plasma adrenaline and norepinephrine and gene polymorphism of β1 adrenergic receptor G1165C in children with enterovirus 71 (EV71) infection in hand foot and mouth disease (HFMD). METHODS: The polymerase chain reaction (PCR) was used to detect the expression of gene polymorphism of β1 adrenergic receptor G1165C in vitro. The levels of plasma adrenaline and norepinephrine were measured by enzyme-linked immunosorbent assay (ELISA)...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28625478/a-neonatal-mouse-model-of-coxsackievirus-a10-infection-for-anti-viral-evaluation
#19
Shuxuan Li, Huan Zhao, Lisheng Yang, Wangheng Hou, Longfa Xu, Yangtao Wu, Wei Wang, Chunye Chen, Junkai Wan, Xiangzhong Ye, Zhenglun Liang, Qunying Mao, Tong Cheng, Ningshao Xia
Epidemiological data indicate that coxsackievirus A10 (CVA10) has become one of the main causative agents of hand, foot and mouth disease (HFMD) and in recent years has often been found to co-circulate with other enteroviruses, which poses a challenge for the prevention and control of HFMD. Although most CVA10-associated HFMD cases present mild symptoms, severe manifestations and even death can also occur. However, the study of the pathogenesis and the development of drugs and vaccines for CVA10 infection are still far from complete...
June 15, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28621671/association-study-of-inflammatory-cytokine-and-chemokine-expression-in-hand-foot-and-mouth-disease
#20
Wenzhong Shang, Suying Qian, Lijuan Fang, Yong Han, Cuiping Zheng
OBJECTIVE: To determine the relationship of cytokine/chemokine expression with the clinical presentation of hand, foot and mouth disease (HFMD). RESULTS: All cytokine/chemokine levels were higher in severe HFMD patients than in mild HFMD patients or controls (P < 0.01). RANTES, MCP-1, IL-4, IL-12 and IL-18 levels were higher in mild HFMD patients than in the controls (P < 0.05). In severe HFMD, all levels (except IL-8 and IL-4) were higher in patients with encephalitis plus pulmonary edema than in those with encephalitis alone (P < 0...
June 2, 2017: Oncotarget
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