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https://www.readbyqxmd.com/read/28737865/unusual-increase-of-cases-of-myelitis-in-a-pediatric-hospital-in-argentina
#1
Guadalupe Pérez, María T Rosanova, María C Freire, María I Paz, Silvina Ruvinsky, Carlos Rugilo, Víctor Ruggieri, Daniel Cisterna, Soledad Martiren, Cristina Lema, Andrea Savransky, Soledad González, Leila Martínez, Diana Viale, Rosa Bologna
INTRODUCTION: The association between enterovirus D68 and acute flaccid myelitis was first described in the United States in 2014. Since then, sporadic cases have been reported in Canada and Europe. This study describes a series of cases of acute flaccid myelitis at Hospital de Pediatría "Prof. Dr. Juan P. Garrahan," in Buenos Aires, Argentina, during 2016. METHODS: Descriptive, retrospective study. All patients with acute flaccid myelitis and lesions in the spinal cord involving the gray matter, as observed in the magnetic resonance imaging (MRI) scan, hospitalized from 04/01/2016 to 07/01/2016, were included in the study...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28737006/unrecognized-viral-infections-and-chromosome-abnormalities-as-a-cause-of-fetal-death-examination-with-fluorescence-in%C3%A2-situ-hybridization-immunohistochemistry-and-polymerase-chain-reaction
#2
Bente Ediassen Opsjøn, Svein Arne Nordbø, Christina Vogt
Fifteen to 50% of fetal deaths remain unexplained after post-mortem examination depending on inclusion criteria and classification systems. Our aim was to examine a selection of unexplained fetal deaths in order to investigate whether any common chromosome aberrations or viral infections were present. Reports from 351 fetal autopsies performed at the Department of Pathology and Medical Genetics at St. Olavs University Hospital from 2001 through 2010 were reviewed. Of these, 105 fetal deaths were classified as unexplained...
July 24, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28735334/detection-of-polioviruses-in-sewage-using-cell-culture-and-molecular-methods
#3
Agnieszka Figas, Magdalena Wieczorek, Bogumiła Litwińska, Włodzimierz Gut
The work presented here demonstrates the utility of a two-step algorithm for environmental poliovirus surveillance based on: preselection of sewage samples tested for the presence of enteroviral genetic material-RT-PCR assay and detection of infectious viruses by cell culture technique (L20B for polioviruses and RD for polio and other non-polio enteroviruses). RD and L20B cell lines were tested to determine their sensitivity for isolation of viruses from environmental samples (sewage). Finally, we wanted to determine if sewage concentration affects the results obtained for RT-PCR and cell cultures...
January 2, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735328/molecular-characterization-of-enteroviruses-isolated-from-acute-flaccid-paralysis-cases-in-poland-1999-2014
#4
Magdalena Wieczorek, Arleta Krzysztoszek
Enteroviruses (EVs) are among viral pathogens that can cause acute flaccid paralysis (AFP). This study represents an overview of EVs isolated through AFP surveillance in Poland between 1999 and 2014. The presence of enteroviruses was studied in stool samples that were collected from 747 AFP cases and their asymptomatic contacts. Fifty five (6.12%) cases of AFP were associated with enterovirus isolation. Out of the 55 positive cases, 40 were associated with detection of enterovirus in patient, and 15 with detection of EV in healthy contact, without positive detection in paralytic patient...
January 2, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28732070/characterization-of-human-enterovirus71-virus-like-particles-used-for-vaccine-antigens
#5
Dandan Zhao, Bo Sun, Shiyang Sun, Bin Fu, Chuntian Liu, Dawei Liu, Yanfei Chu, Youlei Ma, Lu Bai, Yongge Wu, Yan Zhou, Weiheng Su, Ali Hou, Linjun Cai, Fei Xu, Wei Kong, Chunlai Jiang
Human enterovirus 71 (EV71) is a major causative pathogen of hand, foot and mouth disease (HFMD) and has caused outbreaks with significant mortality among young children in the Asia-Pacific region in recent years. Towards developing a vaccine for this disease, we have expressed and purified EV71 virus-like particles (VLPs), which resemble the authentic virus in appearance, capsid structure and protein sequence, from insect cells (Sf9) using a multistep chromatography process. We demonstrated intracellular localization of the VLPs in host cells by in situ immunogold detection, electron microscopy and immunofluorescence...
2017: PloS One
https://www.readbyqxmd.com/read/28730326/infectious-diseases-causing-autonomic-dysfunction
#6
REVIEW
Francisco Javier Carod Artal
OBJECTIVES: To review infectious diseases that may cause autonomic dysfunction. METHODS: Review of published papers indexed in medline/embase. RESULTS: Autonomic dysfunction has been reported in retrovirus (human immunodeficiency virus (HIV), human T-lymphotropic virus), herpes viruses, flavivirus, enterovirus 71 and lyssavirus infections. Autonomic dysfunction is relatively common in HIV-infected patients and heart rate variability is reduced even in early stages of infection...
July 20, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28726764/fluorination-of-naturally-occurring-n%C3%A2-benzyladenosine-remarkably-increased-its-antiviral-activity-and-selectivity
#7
Vladimir E Oslovsky, Mikhail S Drenichev, Liang Sun, Nikolay N Kurochkin, Vladislav E Kunetsky, Carmen Mirabelli, Johan Neyts, Pieter Leyssen, Sergey N Mikhailov
Recently, we demonstrated that the natural cytokinin nucleosides N⁶-isopentenyladenosine (iPR) and N⁶-benzyladenosine (BAPR) exert a potent and selective antiviral effect on the replication of human enterovirus 71. In order to further characterize the antiviral profile of this class of compounds, we generated a series of fluorinated derivatives of BAPR and evaluated their activity on the replication of human enterovirus 71 in a cytopathic effect (CPE) reduction assay. The monofluorination of the BAPR-phenyl group changed the selectivity index (SI) slightly because of the concomitant high cell toxicity...
July 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28725563/atypical-hemolytic-uremic-syndrome-triggered-by-varicella-infection
#8
Pauline Condom, Jean-Michel Mansuy, Stéphane Decramer, Jacques Izopet, Catherine Mengelle
Varicella Zoster Virus (VZV) is a well-known virus that belongs to the Herpesviridae family which induces a self-limited disease except in specific cases in particular among stem cell transplant patients. This virus is not known however to trigger atypical Hemolytic Uremic Syndrome (aHUS). Here we report the case of a six-year-old boy who was hospitalized with fever and abdominal pains associated to pruritic and vesicular rash, thrombocytopenia and acute renal failure. He was diagnosed with aHUS precipitated by varicella virus...
2017: IDCases
https://www.readbyqxmd.com/read/28724943/aim2-inflammasome-mediated-pyroptosis-in-enterovirus-a71-infected-neuronal-cells-restricts-viral-replication
#9
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
#10
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/28719323/burden-and-seasonality-of-viral-acute-respiratory-tract-infections-among-outpatients-in-southern-sri-lanka
#11
David Shapiro, Champica K Bodinayake, Ajith Nagahawatte, Vasantha Devasiri, Ruvini Kurukulasooriya, Jeremy Hsiang, Bradley Nicholson, Aruna Dharshan De Silva, Truls Østbye, Megan E Reller, Christopher W Woods, L Gayani Tillekeratne
In tropical and subtropical settings, the epidemiology of viral acute respiratory tract infections varies widely between countries. We determined the etiology, seasonality, and clinical presentation of viral acute respiratory tract infections among outpatients in southern Sri Lanka. From March 2013 to January 2015, we enrolled outpatients presenting with influenza-like illness (ILI). Nasal/nasopharyngeal samples were tested in duplicate using antigen-based rapid influenza testing and multiplex polymerase chain reaction (PCR) for respiratory viruses...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719027/marker-of-coxsackievirus-b4-infection-in-saliva-of-patients-with-type-1-diabetes
#12
F Badia-Boungou, F Sane, E K Alidjinou, M Ternois, P A Opoko, J Haddad, C Stukens, C Lefevre, I Gueorguieva, M Hamze, M Ismail, J Weill, H G Monabéka, E Bouenizabila, D Moukassa, A A Abena, D Hober
BACKGROUND: Coxsackieviruses B (CV-B) are enteroviruses that have been reported to play a role in the pathogenesis of type 1 diabetes. Enteroviral RNA was detected in the gut mucosa of patients. The mucosal immunity is an interconnected network, therefore the response to enteroviruses possibly present in the gastrointestinal mucosa can be reflected by specific antibodies in the saliva. In the present study the anti-CV-B neutralizing activity of saliva samples from patients with type 1 diabetes was investigated...
July 18, 2017: Diabetes/metabolism Research and Reviews
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
#13
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/28711442/association-of-ev71-3c-polymorphisms-with-clinical-severity
#14
Hsuan-Yin Ma, Chun-Yi Lu, Kuo-Chien Tsao, Hsiu-Ming Shih, Ai-Ling Cheng, Li-Min Huang, Luan-Yin Chang
OBJECTIVES: Enterovirus 71 (EV71) may cause neurological and fatal cases. EV71 3C plays an important role on viral replication and possess proteolysis activity. To delineate pathogenesis of EV71 virulence, we studied EV71 3C genetics, protease activity and correlated the results with clinical severity. METHODS: EV71 cases were collected; 3C of EV71 was sequenced and linked with clinical severity. 3C protease activity, viral replication rates of EV71 infectious clones with different 3C and 3C interaction with host proteins were analyzed...
June 28, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28708843/prevalence-of-respiratory-viruses-among-adults-by-season-age-respiratory-tract-region-and-type-of-medical-unit-in-paris-france-from-2011-to-2016
#15
Benoit Visseaux, Charles Burdet, Guillaume Voiriot, François-Xavier Lescure, Taous Chougar, Olivier Brugière, Bruno Crestani, Enrique Casalino, Charlotte Charpentier, Diane Descamps, Jean-François Timsit, Yazdan Yazdanpanah, Nadhira Houhou-Fidouh
BACKGROUND: Multiplex PCR tests have improved our understanding of respiratory viruses' epidemiology by allowing their wide range detection. We describe here the burden of these viruses in hospital settings over a five-year period. METHODS: All respiratory samples from adult patients (>20 years old) tested by multiplex-PCR at the request of physicians, from May 1 2011 to April 30 2016, were included retrospectively. Viral findings are reported by season, patient age group, respiratory tract region (upper or lower) and type of clinical unit (intensive care unit, pneumology unit, lung transplantation unit and other medical units)...
2017: PloS One
https://www.readbyqxmd.com/read/28708249/the-impact-of-anthropogenic-pressure-on-the-virological-quality-of-water-from-the-tiber-river-italy
#16
G La Rosa, I Sanseverino, S Della Libera, M Iaconelli, V E V Ferrero, A Barra Caracciolo, T Lettieri
The objective of the present study was to assess the occurrence of major waterborne enteric viruses (enterovirus, norovirus, adenovirus, rotavirus, hepatitis A and E virus) along the Tiber River in Italy, in areas affected by different kinds of anthropogenic pressure (agricultural, urban, industrial, and pristine). Moreover, in light of the recent abundant detection of human bocavirus in urban wastewater samples in Italy, the occurrence of this virus was also assessed. Virus detection was based on nested PCR followed by sequencing, and on Real Time PCR...
July 14, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28705680/characterization-of-significant-molecular-determinants-of-virulence-of-enterovirus-71-sub-genotype-b4-in-rhabdomyosarcoma-cells
#17
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/28705656/impact-of-enteroviral-polymerase-chain-reaction-testing-on-length-of-stay-for-infants-60-days-old-or-younger
#18
Paul L Aronson, Todd W Lyons, Andrea T Cruz, Stephen B Freedman, Pamela J Okada, Alesia H Fleming, Joseph L Arms, Amy D Thompson, Suzanne M Schmidt, Jeffrey Louie, Michael J Alfonzo, Michael C Monuteaux, Lise E Nigrovic
OBJECTIVE: To determine the impact of a cerebrospinal fluid enterovirus polymerase chain reaction (PCR) test performance on hospital length of stay (LOS) in a large multicenter cohort of infants undergoing evaluation for central nervous system infection. STUDY DESIGN: We performed a planned secondary analysis of a retrospective cohort of hospitalized infants ≤60 days of age who had a cerebrospinal fluid culture obtained at 1 of 18 participating centers (2005-2013)...
July 10, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28705625/antiviral-activity-of-gemcitabine-against-human-rhinovirus-in%C3%A2-vitro-and-in%C3%A2-vivo
#19
Jae-Hyoung Song, Seong-Ryeol Kim, Eun-Young Heo, Jae-Young Lee, Dong-Eun Kim, Sungchan Cho, Sun-Young Chang, Byung-Il Yoon, Jeongmin Seong, Hyun-Jeong Ko
Rhinovirus, a major causative agent of the common cold, is associated with exacerbation of asthma and chronic obstructive pulmonary disease. Currently, there is no antiviral treatment or vaccine for human rhinovirus (HRV). Gemcitabine (2',2'-difluorodeoxycytidine, dFdC) is a deoxycytidine analog with antiviral activity against rhinovirus, as well as enterovirus 71, in vitro. However, the antiviral effects of gemcitabine in vivo have not been investigated. In the current study, we assessed whether gemcitabine mediated antiviral effects in the murine HRV infection model...
July 11, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28705429/disinfection-of-tonometers-a-report-by-the-american-academy-of-ophthalmology
#20
Anna K Junk, Philip P Chen, Shan C Lin, Kouros Nouri-Mahdavi, Sunita Radhakrishnan, Kuldev Singh, Teresa C Chen
OBJECTIVE: To examine the efficacy of various disinfection methods for reusable tonometer prisms in eye care and to highlight how disinfectants can damage tonometer tips and cause subsequent patient harm. METHODS: Literature searches were conducted last in October 2016 in the PubMed and the Cochrane Library databases for original research investigations. Reviews, non-English language articles, nonophthalmology articles, surveys, and case reports were excluded. RESULTS: The searches initially yielded 64 unique citations...
July 11, 2017: Ophthalmology
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