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https://www.readbyqxmd.com/read/29339251/quinoxaline-derivatives-as-new-inhibitors-of-coxsackievirus-b5
#1
Antonio Carta, Giuseppina Sanna, Irene Briguglio, Silvia Madeddu, Gabriella Vitale, Sandra Piras, Paola Corona, Alessandra Tiziana Peana, Erik Laurini, Maurizio Fermeglia, Sabrina Pricl, Alessandra Serra, Elisa Carta, Roberta Loddo, Gabriele Giliberti
Enteroviruses are among the most common and important human pathogens for which there are no specific antiviral agents approved by the US Food and Drug Administration so far. Particularly, coxsackievirus infections have a worldwide distribution and can cause many important diseases. We here report the synthesis of new 14 quinoxaline derivatives and the evaluation of their cytotoxicity and antiviral activity against representatives of ssRNA, dsRNA and dsDNA viruses. Promisingly, three compounds showed a very potent and selective antiviral activity against coxsackievirus B5, with EC50 in the sub-micromolar range (0...
December 27, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29337652/poorly-neutralizing-polyclonal-antibody-in-vitro-against-coxsackievirus-a16-circulating-strains-can-prevent-a-lethal-challenge-in-vivo
#2
Xin Yao, QunYing Mao, Yajing Li, Chunsheng Hao, LianLian Bian, Pan Chen, Fan Gao, Xing Wu, WeiWei Lu, Qiang Gao, XiuLing Li, Zhenglun Liang
Neutralizing antibodies (NTAbs) is a major criterion for evaluation the immunogenicity of many vaccines, for example, poliovirus and EV71 vaccine. Here, we firstly discovered that polyclonal antibodies induced by inactivated CVA16 vaccine and lived CVA16 virus have poor ability to neutralize circulating CVA16 strains in vitro. However, the passive transfer of poorly neutralizing polyclonal antibodies can protect suckling mice from lethally challenged with circulating strains in vivo. In addition, the obvious dose response was found between the titer of antibodies and the survival rate...
January 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29327705/diabetes-towards-a-coxsackievirus-b-based-vaccine-to-combat-t1dm
#3
Didier Hober, Enagnon Kazali Alidjinou
No abstract text is available yet for this article.
January 12, 2018: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/29326001/coxsackievirus-and-type-1-diabetes-mellitus-the-wolf-s-footprints
#4
Decio L Eizirik, Anne Op de Beeck
Enteroviruses are important environmental contributors to islet inflammation (insulitis) in type 1 diabetes mellitus (T1DM). A recent study characterized the proteomic alterations induced by Coxsackievirus type B (CVB) infection of human islets. This provides relevant information to decipher the words of the virus-induced 'dialog' between β cells and the immune system that leads to autoimmunity.
January 8, 2018: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/29325543/persistent-mammalian-orthoreovirus-coxsackievirus-and-adenovirus-co-infection-in-a-child-with-a-primary-immunodeficiency-detected-by-metagenomic-sequencing-a-case-report
#5
Dagmara W Lewandowska, Riccarda Capaul, Seraina Prader, Osvaldo Zagordi, Fabienne-Desirée Geissberger, Martin Kügler, Marcus Knorr, Christoph Berger, Tayfun Güngör, Janine Reichenbach, Cyril Shah, Jürg Böni, Andrea Zbinden, Alexandra Trkola, Jana Pachlopnik Schmid, Michael Huber
BACKGROUND: We report a rare case of Mammalian orthoreovirus (MRV) infection in a child with a primary immunodeficiency (PID). Infections with Mammalian orthoreovirus are very rare and probably of zoonotic origin. Only a few cases have been described so far, including one with similar pathogenesis as in our case. CASE PRESENTATION: The patient, age 11, presented with flu-like symptoms and persistent severe diarrhea. Enterovirus has been detected over several months, however, exact typing of a positive cell culture remained inconclusive...
January 11, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29319516/genetic-characterization-of-human-enteroviruses-associated-with-hand-foot-and-mouth-diseases-in-poland-2013-2016
#6
Magdalena Wieczorek, Agnieszka Ciąćka, Arleta Krzysztoszek, Agnieszka Figas, Leszek Szenborn
The objective of the present study was to describe the molecular characteristics of enteroviruses associated with hand, food, and mouth disease (HFMD) in Poland. Clinical material from HFMD cases, that occurred during 2013-2016 were examined. It has been showed that coxsackievirus A6 (CVA6), CVA10 and CVA16 were circulating in the country. Phylogenetic analysis showed that Polish CVA6 strains were divided into two distinct clusters suggesting two independent introductions. This is the first report of CVA6 infections associated with HFMD in Poland...
September 27, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/29311608/a-novel-rat-cvb1-vp1-monoclonal-antibody-3a6-detects-a-broad-range-of-enteroviruses
#7
Niila V V Saarinen, Jutta E Laiho, Sarah J Richardson, Marie Zeissler, Virginia M Stone, Varpu Marjomäki, Tino Kantoluoto, Marc S Horwitz, Amirbabak Sioofy-Khojine, Anni Honkimaa, Minna M Hankaniemi, Malin Flodström-Tullberg, Heikki Hyöty, Vesa P Hytönen, Olli H Laitinen
Enteroviruses (EVs) are common RNA viruses that cause diseases ranging from rash to paralytic poliomyelitis. For example, EV-A and EV-C viruses cause hand-foot and mouth disease and EV-B viruses cause encephalitis and myocarditis, which can result in severe morbidity and mortality. While new vaccines and treatments for EVs are under development, methods for studying and diagnosing EV infections are still limited and therefore new diagnostic tools are required. Our aim was to produce and characterize new antibodies that work in multiple applications and detect EVs in tissues and in vitro...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29295868/the-immunoproteasome-specific-inhibitor-onx-0914-reverses-susceptibility-to-acute-viral-myocarditis
#8
Nadine Althof, Carl Christoph Goetzke, Meike Kespohl, Karolin Voss, Arnd Heuser, Sandra Pinkert, Ziya Kaya, Karin Klingel, Antje Beling
Severe heart pathology upon virus infection is closely associated with the immunological equipment of the host. Since there is no specific treatment available, current research focuses on identifying new drug targets to positively modulate predisposing immune factors. Utilizing a murine model with high susceptibility to coxsackievirus B3-induced myocarditis, this study describes ONX 0914-an immunoproteasome-specific inhibitor-as highly protective during severe heart disease. Represented by reduced heart infiltration of monocytes/macrophages and diminished organ damage, ONX 0914 treatment reversed fulminant pathology...
January 2, 2018: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/29284752/role-of-enhanced-receptor-engagement-in-the-evolution-of-a-pandemic-acute-hemorrhagic-conjunctivitis-virus
#9
Jim Baggen, Daniel L Hurdiss, Georg Zocher, Nitesh Mistry, Richard W Roberts, Jasper J Slager, Hongbo Guo, Arno L W van Vliet, Maryam Wahedi, Kimberley Benschop, Erwin Duizer, Cornelis A M de Haan, Erik de Vries, José M Casasnovas, Raoul J de Groot, Niklas Arnberg, Thilo Stehle, Neil A Ranson, Hendrik Jan Thibaut, Frank J M van Kuppeveld
Acute hemorrhagic conjunctivitis (AHC) is a painful, contagious eye disease, with millions of cases in the last decades. Coxsackievirus A24 (CV-A24) was not originally associated with human disease, but in 1970 a pathogenic "variant" (CV-A24v) emerged, which is now the main cause of AHC. Initially, this variant circulated only in Southeast Asia, but it later spread worldwide, accounting for numerous AHC outbreaks and two pandemics. While both CV-A24 variant and nonvariant strains still circulate in humans, only variant strains cause AHC for reasons that are yet unknown...
December 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29273481/a-novel-and-highly-sensitive-real-time-nested-rt-pcr-assay-in-a-single-closed-tube-for-detection-of-enterovirus
#10
Xin-Xin Shen, Fang-Zhou Qiu, Huai-Long Zhao, Meng-Jie Yang, Liu Hong, Song-Tao Xu, Shuai-Feng Zhou, Gui-Xia Li, Zhi-Shan Feng, Xue-Jun Ma
The sensitivity of qRT-PCR assay is not adequate for the detection of the samples with lower viral load, particularly in the cerebrospinal fluid (CSF) of patients. Here, we present the development of a highly sensitive real-time nested RT-PCR (RTN RT-PCR) assay in a single closed tube for detection of human enterovirus (HEV). The clinical performance of both RTN RT-PCR and qRT-PCR was also tested and compared using 140 CSF and fecal specimens. The sensitivities of RTN RT-PCR assay for EV71, Coxsackievirus A (CVA)16, CVA6 and CVA10 achieved 10-8 dilution with a corresponding Ct value of 38...
December 2, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29258646/epidemiology-of-hand-foot-and-mouth-disease-in-china-2008-to-2015-prior-to-the-introduction-of-ev-a71-vaccine
#11
Bingyi Yang, Fengfeng Liu, Qiaohong Liao, Peng Wu, Zhaorui Chang, Jiao Huang, Lu Long, Li Luo, Yu Li, Gabriel M Leung, Benjamin J Cowling, Hongjie Yu
IntroductionHand, foot and mouth disease (HFMD) is usually caused by several serotypes from human enterovirus A species, including enterovirus 71 (EV-A71) and coxsackievirus A16 (CV-A16). Two inactivated monovalent EV-A71 vaccines have been recently licensed in China and monovalent CV-A16 vaccine and bivalent EV-A71 and CV-A16 vaccine are under development. Methods: Using notifications from the national surveillance system, we describe the epidemiology and dynamics of HFMD in the country, before the introduction of EV-A71 vaccination, from 2008 through 2015...
December 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29248990/large-scale-survey-of-human-enteroviruses-in-wastewater-treatment-plants-of-a-metropolitan-area-of-southern-italy
#12
Francesca Pennino, Antonio Nardone, Paolo Montuori, Sara Aurino, Ida Torre, Andrea Battistone, Roberto Delogu, Gabriele Buttinelli, Stefano Fiore, Concetta Amato, Maria Triassi
Human enteroviruses (HEVs) occur in high concentrations in wastewater and can contaminate receiving environmental waters, constituting a major cause of acute waterborne disease worldwide. In this study, we investigated the relative abundance, occurrence, and seasonal distribution of polio and other enteroviruses at three wastewater treatment plants (WWTPs) in Naples, Southern Italy, from January 2010 to December 2014. Influent and effluent samples from the three WWTPs were collected monthly. One hundred and sixty-one of the 731 wastewater samples collected (22...
December 16, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/29220410/cleavage-of-osmosensitive-transcriptional-factor-nfat5-by-coxsackieviral-protease-2a-promotes-viral-replication
#13
Ye Qiu, Xin Ye, Huifang Mary Zhang, Paul Hanson, Guangze Zhao, Lei Tong, Ronald Xie, Decheng Yang
Nuclear factor of activated T cells 5 (NFAT5)/Tonicity enhancer binding protein (TonEBP) is a transcription factor induced by hypertonic stress in the kidney. However, the function of NFAT5 in other organs has rarely been studied, even though it is ubiquitously expressed. Indeed, although NFAT5 was reported to be critical for heart development and function, its role in infectious heart diseases has remained obscure. In this study, we aimed to understand the mechanism by which NFAT5 interferes with infection of Coxsackievirus B3 (CVB3), a major cause of viral myocarditis...
December 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29208044/an-outbreak-of-acute-haemorrhagic-conjunctivitis-associated-with-coxsackievirus-a24-variant-in-the-gambia-west-africa
#14
Sarah E Burr, Ansumana Sillah, Hassan Joof, Robin L Bailey, Martin J Holland
OBJECTIVE: An outbreak of acute haemorrhagic conjunctivitis occurred in The Gambia, West Africa in 2011. Affected individuals presented with conjunctival haemorrhages, swelling and ocular discharge. In an effort to identify a causative agent of the disease, ocular swabs were taken from patients during the acute and convalescent phases. Total RNA was extracted from all samples and reverse-transcriptase PCR performed using primers specific for all enteroviruses. Resulting amplicons were sequenced and data compared to known sequences using the BLAST algorithm...
December 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29204277/cytomegalovirus-mononucleosis-induced-thyroiditis-in-an-immunocompetent-patient
#15
V Larouche, M Tamilia
Enteroviruses, including coxsackieviruses and Echovirus, are well known pathogens responsible for the development of thyroiditis. We describe the case of a 49-year-old woman with no personal or family history of thyroid disease who presented to the emergency room with a two-week history of daily fevers up to 39°C, a sore throat, occasional palpitations and diaphoresis, decreased appetite and an unintentional 10 kg weight loss over the same time course Physical examination revealed mild tachycardia, an intention tremor and a normal-sized, nontender thyroid gland without palpable nodules...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29201031/age-associated-changes-in-estrogen-receptor-ratios-correlate-with-increased-female-susceptibility-to-coxsackievirus-b3-induced-myocarditis
#16
REVIEW
Andreas Koenig, Iwona Buskiewicz, Sally A Huber
Sexual bias is a hallmark in various diseases. This review evaluates sexual dimorphism in clinical and experimental coxsackievirus B3 (CVB3) myocarditis, and how sex bias in the experimental disease changes with increased age. Coxsackieviruses are major causes of viral myocarditis, an inflammation of the heart muscle, which is more frequent and severe in men than women. Young male mice infected with CVB3 develop heart-specific autoimmunity and severe myocarditis. Females infected during estrus (high estradiol) develop T-regulatory cells and when infected during diestrus (low estradiol) develop autoimmunity similar to males...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29190716/suppression-of-cancer-stemness-by-upregulating-ligand-of-numb-protein-x1-in-colorectal-carcinoma
#17
Lin Ma, Lan Wang, Yating Shan, Muhammad Nafees, Elshoura Ihab, Ruhui Zhang, Fangjun Wang, Wu Yin
Cancer stem-like cells (CSCs) have been reported to play major roles in tumorigenesis, tumor relapse, and metastasis after therapy against colorectal carcinoma (CRC). Therefore, identification of colorectal CSC regulators could provide promising targets for CRC. Ligand-of-Numb protein X1 (LNX1) is one E3 ubiquitin ligase which mediates the ubiquitination and degradation of Numb. Although several studies indicate LNX1 could be a potential suppressor of cancer diseases, the functions of LNX1 in mediating cancer stemness remain poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/29182907/evaluation-of-the-suitability-of-a-plant-virus-pepper-mild-mottle-virus-as-a-surrogate-of-human-enteric-viruses-for-assessment-of-the-efficacy-of-coagulation-rapid-sand-filtration-to-remove-those-viruses
#18
N Shirasaki, T Matsushita, Y Matsui, R Yamashita
Here, we evaluated the removal of three representative human enteric viruses - adenovirus (AdV) type 40, coxsackievirus (CV) B5, and hepatitis A virus (HAV) IB - and one surrogate of human caliciviruses - murine norovirus (MNV) type 1 - by coagulation-rapid sand filtration, using water samples from eight water sources for drinking water treatment plants in Japan. The removal ratios of a plant virus (pepper mild mottle virus; PMMoV) and two bacteriophages (MS2 and φX174) were compared with the removal ratios of human enteric viruses to assess the suitability of PMMoV, MS2, and φX174 as surrogates for human enteric viruses...
November 21, 2017: Water Research
https://www.readbyqxmd.com/read/29182793/atypical-hand-foot-and-mouth-disease-caused-by-coxsackievirus-a6-in-denmark-a-diagnostic-mimicker
#19
Hans-Henrik Horsten, Michael Kemp, Thea K Fischer, Kim H Lindahl, Anette Bygum
Since 2008, outbreaks of atypical hand, foot, and mouth disease (HFMD) in children and adults have been reported worldwide. The majority of these outbreaks are caused by a new lineage of Coxsackie virus A6 (CV-A6) presenting a more severe clinical phenotype than the classical childhood HFMD caused by CV-A16. Between June 2014 and January 2016, 23 cases of atypical HFMD disease presented at a Dermatology Department at a regional University Hospital in Denmark. Patients were referred by general practitioners and dermatologists with a variety of clinical diagnoses, including eczema herpeticum, vasculitis, syphilis, dermatophytid, erythema multiforme and Stevens-Johnson syndrome...
November 28, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/29179969/-detection-of-herpes-virus-and-human-enterovirus-in-pathology-samples-using-low-density-arrays
#20
Sofía Del Carmen Martínez, Ruth Gervás Ríos, Yoana Franco Rodríguez, Cristina González Velasco, Miguel Ángel Cruz Sánchez, María Del Mar Abad Hernández
Despite the frequency of infections with herpesviridae family, only eight subtypes affect humans (Herpex Simplex Virus types 1 and 2, Varicella Zoster Virus, Epstein-Barr Virus, Citomegalovirus and Human Herpes Virus types 6, 7 and 8). Amongst enteroviruses infections, the most important are Poliovirus, Coxackievirus and Echovirus. Symptoms can vary from mild to severe and early diagnosis is of upmost importance. Nowadays, low-density arrays can detect different types of viruses in a single assay using DNA extracted from biological samples...
January 2017: Revista Española de Patología
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