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https://www.readbyqxmd.com/read/29777445/a-reverse-genetics-system-for-enterovirus-d68-using-human-rna-polymerase-i
#1
Minglei Pan, Shuai Gao, Zhenwei Zhou, Keke Zhang, Sihua Liu, Zhiyun Wang, Tao Wang
Human enterovirus D68 (EV-D68) is a highly contagious virus, which causes respiratory tract infections. However, no effective vaccines are currently available for controlling EV-D68 infection. Here, we developed a reverse genetics system to recover EV-D68 minireplicons and infectious EV-D68 from transfected plasmids using the RNA polymerase I (Pol I) promoter. The EV-D68 minireplicons contained the luciferase reporter gene, which flanked by the non-coding regions of the EV-D68 RNA. The luciferase signals could be detected in cells after transfection and Pol I promoter-mediated luciferase signal was significantly stronger than that mediated by the T7 promoter...
May 17, 2018: Virus Genes
https://www.readbyqxmd.com/read/29753903/detection-of-nineteen-enteric-viruses-in-raw-sewage-in-japan
#2
Aksara Thongprachum, Tsuguto Fujimoto, Sayaka Takanashi, Hiroyuki Saito, Shoko Okitsu, Hiroyuki Shimizu, Pattara Khamrin, Niwat Maneekarn, Satoshi Hayakawa, Hiroshi Ushijima
One-year surveillance for enteric viruses in raw sewage was conducted in Kansai area, central part of Japan from July 2015 to June 2016. The raw sewage was collected monthly from an inlet polluted pool and was concentrated by polyethylene glycol (PEG) precipitation. Twelve sewage samples were screened for nineteen kinds of enteric viruses by using RT-PCR method and further analyzed by nucleotide sequencing. Twelve enteric viruses were found in the investigative sewage samples. Rotavirus A and norovirus GI and GII with several genotypes were detected all year round...
May 10, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29753011/insights-into-hydrolysis-versus-transfructosylation-mutagenesis-studies-of-a-novel-levansucrase-from-brenneria-sp-enid312
#3
Wei Xu, Dawei Ni, Shuhuai Yu, Tao Zhang, Wanmeng Mu
Levan is a kind of fructan that composing of fructose by β-(2, 6) linkage and has been already applied as thickening agent and colloidal stabilizer in the cosmetic, medicinal and food industries. Microbial levansucrase is a key enzyme catalyzing the formation of levan from sucrose by transfructosylation. Here, a gene encoding levansucrase from Brenneria sp. EniD312 was cloned and expressed in Escherichia coli. The recombinant levansucrase showed the optimal pH and temperature at pH 6.5 and 45 °C. The enzyme produced 85 g/L levan from 250 g/L sucrose at pH 6...
May 9, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29746455/enterovirus-and-parechovirus-surveillance-united-states-2014-2016
#4
Glen R Abedi, John T Watson, W Allan Nix, M Steven Oberste, Susan I Gerber
Infections caused by enteroviruses (EV) and parechoviruses (PeV), members of the Picornaviridae family, are associated with various clinical manifestations, including hand, foot, and mouth disease; respiratory illness; myocarditis; meningitis; and sepsis; and can result in death. The genus Enterovirus includes four species of enterovirus (A-D) known to infect humans, and the genus Parechovirus includes one species (A) that infects humans. These species are further divided into types, some of which are associated with specific clinical manifestations...
May 11, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29745776/design-synthesis-structure-activity-relationships-of-a-new-class-of-antihuman-enterovirus-d68-a71-agents
#5
Bidyadhar Sethy, Chung-Fan Hsieh, Chieh Yeh, Jim-Tong Horng, Pei-Wen Hsieh
AIM: No antiviral medications are currently approved to treat enterovirus (EV)-associated disease or prevent EV infection. METHODS: In this study, a series of probenecid derivatives were designed via a rational strategy and synthesized to obtain more potent anti-EV agents. RESULTS: Compounds 8 and 24 exhibited the most potent activity against EV D68 and A71, with half maximal effective concentration (EC50 ) values of 2.49/2.09 and 2.59/2.41 μM, respectively, and revealed a broad inhibition spectrum toward other EV strains, with high selectivity indices...
May 10, 2018: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/29732292/prevalence-of-%C3%AE-2-agonist-inhalation-for-outpatients-in-a-pediatric-emergency-center-during-enterovirus-d68-epidemic
#6
Masafumi Zaitsu, Tatsuhiro Mizoguchi, Muneaki Matsuo, Toshimitsu Takayanagi, Okito Shimada, Tsuneyoshi Baba
Background: Enterovirus D68 (EV-D68) has been reported to have caused severe bronchial asthma attacks and hospitalization epidemics in Japan in September 2015. Objective: To investigate the prevalence of β2 -agonist inhalation in a pediatric emergency center during a period of increased hospitalization for bronchial asthma, which was suggested to be associated with EV-D68. Methods: We investigated the prevalence of β2 -agonist inhalation in a pediatric emergency center in Saga city, Japan, from April 2013 to October 2015, and also clarified the trends in bronchial asthma hospitalization in the same area during that time...
April 2018: Asia Pacific Allergy
https://www.readbyqxmd.com/read/29655864/comparison-of-the-severity-of-respiratory-disease-in-children-testing-positive-for-enterovirus-d68-and-human-rhinovirus
#7
Esra Caylan, Ezra Weinblatt, John Welter, Allen Dozor, Guiqing Wang, Sheila M Nolan
OBJECTIVE: To compare the characteristics and severity of respiratory disease in children testing positive for enterovirus D68 (EV-D68) and for human rhinovirus (RhV). STUDY DESIGN: A retrospective single center study of children presenting with acute respiratory symptoms and positive polymerase chain reaction for RhV/EV from September 1, 2014 through October 31, 2014 was performed. Specimens were subsequently tested specifically for EV-D68 and specimens identified as RhV were subtyped when possible into RhV-A, RhV-B, and RhV-C species...
April 11, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29652870/surveillance-for-the-identification-of-cases-of-acute-respiratory-infection-by-enterovirus-d68-in-children-in-a-tertiary-level-care-hospital-during-2014-2016
#8
Ana Estela Gamiño-Arroyo, José Luis Sánchez-Huerta, Alicia Elhaín de la Garza-López, Israel Parra-Ortega, Noé Escobar-Escamilla, Edgar Mendieta-Condado, Fabiola Garcés-Ayala, Gisela Barrera-Badillo, José Ernesto Ramírez-González, José Alberto Díaz-Quiñonez, Daniela de la Rosa-Zamboni
Background: The reemergence of enterovirus D68 (EV-D68) infections in the United States was reported from August-October 2014 (691 cases). In Mexico, an outbreak at the National Institute of Respiratory Diseases was reported (24 cases). The results of epidemiological surveillance of Enterovirus sp. (EV) and other respiratory viruses in a national pediatric tertiary care level hospital are presented. Methods: Following the alert issued by the reemergence of EV-D68 in 2014, epidemiological surveillance -which only detected respiratory viruses by PCR in patients with influenza-like illness using nasopharyngeal swabs- expanded to include children with asthma exacerbation or acute respiratory distress...
2018: Boletín Médico del Hospital Infantil de México
https://www.readbyqxmd.com/read/29650033/enterovirus-serotypes-in-patients-with-central-nervous-system-and-respiratory-infections-in-viet-nam-1997-2010
#9
Nguyen Thi Thuy Chinh B'Krong, Ngo Ngoc Quang Minh, Phan Tu Qui, Tran Thi Hong Chau, Ho Dang Trung Nghia, Lien Anh Ha Do, Nguyen Ngoc Nhung, Nguyen Van Vinh Chau, Guy Thwaites, Le Van Tan, H Rogier van Doorn, Tran Tan Thanh
BACKGROUND: Enteroviruses are the most common causative agents of human illness. Enteroviruses have been associated with regional and global epidemics, recently, including with severe disease (Enterovirus A71 and D68), and are of interest as emerging viruses. Here, we typed Enterovirus A-D (EV) from central nervous system (CNS) and respiratory infections in Viet Nam. METHODS: Data and specimens from prospective observational clinical studies conducted between 1997 and 2010 were used...
April 12, 2018: Virology Journal
https://www.readbyqxmd.com/read/29626210/the-life-cycle-of-non-polio-enteroviruses-and-how-to-target-it
#10
REVIEW
Jim Baggen, Hendrik Jan Thibaut, Jeroen R P M Strating, Frank J M van Kuppeveld
The genus Enterovirus (EV) of the family Picornaviridae includes poliovirus, coxsackieviruses, echoviruses, numbered enteroviruses and rhinoviruses. These diverse viruses cause a variety of diseases, including non-specific febrile illness, hand-foot-and-mouth disease, neonatal sepsis-like disease, encephalitis, paralysis and respiratory diseases. In recent years, several non-polio enteroviruses (NPEVs) have emerged as serious public health concerns. These include EV-A71, which has caused epidemics of hand-foot-and-mouth disease in Southeast Asia, and EV-D68, which recently caused a large outbreak of severe lower respiratory tract disease in North America...
April 6, 2018: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/29620089/adult-case-of-acute-flaccid-paralysis-with-enterovirus-d68-detected-in-the-csf
#11
Keishi Kimura, Takao Fukushima, Naoko Katada, Hiroyuki Shimizu, Tomofumi Nakamura, Tsuguto Fujimoto, Nozomu Hanaoka, Keiko Tanaka-Taya, Kunihiko Makino
No abstract text is available yet for this article.
October 2017: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/29613895/infectious-myelopathies
#12
Marie F Grill
PURPOSE OF REVIEW: This article reviews bacterial, viral, fungal, and parasitic pathogens associated with myelopathy. Infectious myelopathies may be due to direct infection or parainfectious autoimmune-mediated mechanisms; this article focuses primarily on the former. RECENT FINDINGS: Some microorganisms exhibit neurotropism for the spinal cord (eg, enteroviruses such as poliovirus and flaviviruses such as West Nile virus), while others are more protean in neurologic manifestations (eg, herpesviruses such as varicella-zoster virus), and others are only rarely reported to cause myelopathy (eg, certain fungal and parasitic infections)...
April 2018: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/29593492/enteroviral-infection-the-forgotten-link-to-amyotrophic-lateral-sclerosis
#13
REVIEW
Yuan Chao Xue, Ralph Feuer, Neil Cashman, Honglin Luo
Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease that primarily attacks motor neurons in the brain and spinal cord, leading to progressive paralysis and ultimately death. Currently there is no effective therapy. The majority of ALS cases are sporadic, with no known family history; unfortunately the etiology remains largely unknown. Contribution of Enteroviruses (EVs), a family of positive-stranded RNA viruses including poliovirus, coxsackievirus, echovirus, enterovirus-A71 and enterovirus-D68, to the development of ALS has been suspected as they can target motor neurons, and patients with prior poliomyelitis show a higher risk of motor neuron disease...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29578438/the-morphological-picture-of-local-immune-responses-in-the-kidneys-ureters-and-bladder-of-the-foetuses-and-newborns-who-developed-in-conditions-of-maternal-preeclampsia
#14
I Sorokina, M Myroshnychenko, S Sherstiuk, Y Zubova, S Nakonechna, S Panov
The purpose of the research consisted in revealing morphological peculiarities of local immune responses in the kidneys, ureters and bladder of the foetuses and newborns, who developed in conditions of maternal preeclampsia with different degrees of its severity. The research was conducted on autopsy material: the kidneys, ureters and bladders of mature foetuses and newborns. Four groups were formed in the study: group I - foetuses and newborns from mothers with physiological pregnancy; group II - foetuses and newborns from mothers, whose pregnancy was complicated with a mild degree of preeclampsia; group III - foetuses and newborns from mothers, whose pregnancy was complicated with a moderately severe degree of preeclampsia; group IV - foetuses and newborns from mothers, whose pregnancy was complicated with severe preeclampsia...
February 2018: Georgian Medical News
https://www.readbyqxmd.com/read/29562185/enteroviruses-remodel-autophagic-trafficking-through-regulation-of-host-snare-proteins-to-promote-virus-replication-and-cell-exit
#15
Abigail K Corona, Holly M Saulsbery, Angel F Corona Velazquez, William T Jackson
Enterovirus D68 (EV-D68) is a medically important respiratory plus-strand RNA virus of children that has been linked to acute flaccid myelitis. We have determined that EV-D68 induces autophagic signaling and membrane formation. Autophagy, a homeostatic degradative process that breaks down protein aggregates and damaged organelles, promotes replication of multiple plus-strand viruses. Induction of autophagic signals promotes EV-D68 replication, but the virus inhibits the downstream degradative steps of autophagy in multiple ways...
March 20, 2018: Cell Reports
https://www.readbyqxmd.com/read/29498483/enterovirus-d-68-in-children-presenting-for-acute-care-in-the-hospital-setting
#16
Timothy J Savage, Jane Kuypers, Helen Y Chu, Miranda C Bradford, Anne Marie Buccat, Xuan Qin, Eileen J Klein, Keith R Jerome, Janet A Englund, Alpana Waghmare
BACKGROUND: Severe respiratory disease associated with enterovirus D68 (EV-D68) has been reported in hospitalized pediatric patients. Virologic and clinical characteristics of EV-D68 infections exclusively in patients presenting to a hospital Emergency Department (ED) or urgent care have not been well defined. METHODS: Mid-nasal swabs from pediatric patients with respiratory symptoms presenting to the ED or urgent care were evaluated using a commercial multiplex PCR platform...
March 2, 2018: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29482893/enterovirus-d68-and-acute-flaccid-myelitis-evaluating-the-evidence-for-causality
#17
REVIEW
Kevin Messacar, Edwin J Asturias, Alison M Hixon, Coretta Van Leer-Buter, Hubert G M Niesters, Kenneth L Tyler, Mark J Abzug, Samuel R Dominguez
Increased circulation of enterovirus D68 in 2014 and 2016 temporally and geographically coincided with increases in cases of acute flaccid myelitis, an uncommon condition of paralysis due to lesions in the anterior horn of the spinal cord. The identification of enterovirus D68 in respiratory specimens from cases of acute flaccid myelitis worldwide further supports an association, yet the absence of direct virus isolation from affected tissues, infrequent detection in cerebrospinal fluid, and the absence, until recently, of an animal model has left the causal nature of the relationship unproven...
February 23, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29471623/monitoring-human-enteric-viruses-in-wastewater-and-relevance-to-infections-encountered-in-the-clinical-setting-a-one-year-experiment-in-central-france-2014-to-2015
#18
Maxime Bisseux, Jonathan Colombet, Audrey Mirand, Anne-Marie Roque-Afonso, Florence Abravanel, Jacques Izopet, Christine Archimbaud, Hélène Peigue-Lafeuille, Didier Debroas, Jean-Luc Bailly, Cécile Henquell
BackgroundHuman enteric viruses are resistant in the environment and transmitted via the faecal-oral route. Viral shedding in wastewater gives the opportunity to track emerging pathogens and study the epidemiology of enteric infectious diseases in the community. Aim: The aim of this study was to monitor the circulation of enteric viruses in the population of the Clermont-Ferrand area (France) by analysis of urban wastewaters. Methods: Raw and treated wastewaters were collected between October 2014 and October 2015 and concentrated by a two-step protocol using tangential flow ultrafiltration and polyethylene glycol precipitation...
February 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29433111/-acute-flaccid-myelitis
#19
Ryutaro Kira
Acute flaccid myelitis (AFM) is a newly defined, rare, but clinically distinct syndrome of acute flaccid paralysis with spinal motor neuron involvement of unknown etiology. Clusters of AFM coincided with a nationwide outbreak of enterovirus D68 (EV-D68) in the United States during autumn to winter of 2014 and in Japan during the autumn of 2015. Although EV-D68 was detected in only 20% of the AFM patients, mainly from respiratory specimens without apparent viral detection from blood and cerebrospinal fluid (CSF) samples, strong temporal associations were noted...
February 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29414181/recommendations-for-enterovirus-diagnostics-and-characterisation-within-and-beyond-europe
#20
REVIEW
Heli Harvala, Eeva Broberg, Kimberley Benschop, Natasa Berginc, Shamez Ladhani, Petri Susi, Claus Christiansen, James McKenna, David Allen, Phoebe Makiello, Georgina McAllister, Mirabelli Carmen, Katherina Zakikhany, Robert Dyrdak, Xiaohui Nielsen, Tina Madsen, Joel Paul, Catherine Moore, Karin von Eije, Antonio Piralla, Mieke Carlier, Laura Vanoverschelde, Randy Poelman, Andrés Anton, F Xavier López-Labrador, Laura Pellegrinelli, Kathrin Keeren, Melanie Maier, Hayley Cassidy, Stavros Derdas, Carita Savolainen-Kopra, Sabine Diedrich, Svein Nordbø, Javier Buesa, Jean-Luc Bailly, Fausto Baldanti, Andrew MacAdam, Audrey Mirand, Susanne Dudman, Isabelle Schuffenecker, Seilesh Kadambari, Johan Neyts, Michael J Griffiths, Jan Richter, Cristina Margaretto, Sheila Govind, Ursula Morley, Ortwin Adams, Sidsel Krokstad, Jonathan Dean, Margarita Pons-Salort, Birgit Prochazka, Maria Cabrerizo, Manasi Majumdar, Gaia Nebbia, Maryse Wiewel, Simon Cottrell, Peter Coyle, Javier Martin, Catrin Moore, Sofie Midgley, Peter Horby, Katja Wolthers, Peter Simmonds, Hubert Niesters, Thea K Fischer
Enteroviruses (EV) can cause severe neurological and respiratory infections, and occasionally lead to devastating outbreaks as previously demonstrated with EV-A71 and EV-D68 in Europe. However, these infections are still often underdiagnosed and EV typing data is not currently collected at European level. In order to improve EV diagnostics, collate data on severe EV infections and monitor the circulation of EV types, we have established European non-polio enterovirus network (ENPEN). First task of this cross-border network has been to ensure prompt and adequate diagnosis of these infections in Europe, and hence we present recommendations for non-polio EV detection and typing based on the consensus view of this multidisciplinary team including experts from over 20 European countries...
April 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
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