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Viral conjunctivitis

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https://www.readbyqxmd.com/read/28523438/reversible-splenial-lesions-presenting-in-conjunction-with-febrile-illness-a-case-series-and-literature-review
#1
David Lin, Matthew Rheinboldt
Transient restricted diffusion and increased T2 signal intensity within the splenium of the corpus callosum is an increasingly recognized albeit uncommon imaging feature in the setting of acute encephalitis and antecedent viral illness. This review will discuss three index cases obtained from an institutional databank. Additionally, the current understanding of the underlying neurophysiologic pathogenesis will be discussed together with differential clinical and imaging diagnostic considerations, treatment options, and outcome metrics...
May 18, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28516841/us3-and-us9-proteins-contribute-to-the-stromal-invasion-of-bovine-herpesvirus-1-in-the-respiratory-mucosa
#2
Jing Zhao, Katrien C K Poelaert, Lennert Steukers, Herman W Favoreel, Yewei Li, Shafiqul I Chowdhury, Sylvia van Drunen Littel-van den Hurk, Brigitte Caij, Hans J Nauwynck
Bovine herpesvirus 1 (BHV-1) infection may lead to conjunctivitis, upper respiratory tract problems, pneumonia, genital disorders and abortion. BHV-1 is able to spread quickly in a plaque-wise manner and invade by breaching the basement membrane (BM) barrier in the respiratory mucosa. BHV-1 Us3, a serine/threonine kinase, induces a dramatic cytoskeletal reorganization and BHV-1 Us9, a tail-anchored membrane protein, is required for axonal transport of viruses in neurons. In this study, we investigated the role of Us3 and Us9 during BHV-1 infection in the respiratory mucosa...
May 18, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28502333/zika-virus-epidemiology-pathogenesis-and-human-disease
#3
REVIEW
Elizabeth K Nugent, Anne K Nugent, Rebecca Nugent, Kenneth Nugent
The Zika virus is a positive sense, single-stranded RNA arbovirus in the Flaviviridae family, genus Flavivirus. This virus was initially isolated in Africa and is transmitted to nonhuman primates and humans by mosquitoes. Initial reports describe sporadic mild viral infection with fever, arthralgia, myalgia and conjunctivitis in Africa and Asia. However, its geographic distribution has significantly increased, and it has caused large outbreaks in the Yap Islands in 2007, in French Polynesia in 2013 and in Brazil in 2015...
May 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28461070/suramin-inhibits-zika-virus-replication-by-interfering-with-virus-attachment-and-release-of-infectious-particles
#4
Irina C Albulescu, Kristina Kovacikova, Ali Tas, Eric J Snijder, Martijn J van Hemert
Zika virus (ZIKV) is a mosquito-borne flavivirus that mostly causes asymptomatic infections or mild disease characterized by low-grade fever, rash, conjunctivitis, and malaise. However, the recent massive ZIKV epidemics in the Americas have also linked ZIKV infection to fetal malformations like microcephaly and Guillain-Barré syndrome in adults, and have uncovered previously unrecognized routes of vertical and sexual transmission. Here we describe inhibition of ZIKV replication by suramin, originally an anti-parasitic drug, which was more recently shown to inhibit multiple viruses...
April 28, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28445592/polo-like-kinase-1-is-a-proviral-host-factor-for-hepatitis-b-virus-replication
#5
Ahmed M Diab, Adrien Foca, Floriane Fusil, Thomas Lahlali, Pascal Jalaguier, Fouzia Amirache, Lia N'Guyen, Nathalie Isorce, François-Loïc Cosset, Fabien Zoulim, Ourania M Andrisani, David Durantel
Chronic Hepatitis B Virus (HBV) infection is a major risk factor for hepatocellular carcinoma (HCC) and current treatments for CHB and HCC are perfectible. Herein, we identified cellular Serine/Threonine Polo-like-kinase 1 (PLK1) as a positive effector of HBV replication. The aim of this study was to demonstrate the proviral role of PLK1 in HBV biosynthesis and validate PLK1 inhibition a potential antiviral strategy. To this end, we employed physiologically relevant HBV infection models of Primary Human Hepatocytes (PHH) and differentiated HepaRG cells, in conjunction with pharmacologic PLK1 inhibitors, siRNA-mediated knockdown, and overexpression of constitutively active PLK1 (PLK1(CA) )...
April 26, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28441238/diaphragm-activation-in-ventilated-patients-using-a-novel-transvenous-phrenic-nerve-pacing-catheter
#6
Steven Reynolds, Adrian Ebner, Tracy Meffen, Viral Thakkar, Matt Gani, Kaity Taylor, Linda Clark, Gautam Sadarangani, Ramasamy Meyyappan, Rodrigo Sandoval, Elizabeth Rohrs, Joaquín A Hoffer
OBJECTIVES: Over 30% of critically ill patients on positive-pressure mechanical ventilation have difficulty weaning from the ventilator, many of whom acquire ventilator-induced diaphragm dysfunction. Temporary transvenous phrenic nerve pacing using a novel electrode-bearing catheter may provide a means to prevent diaphragm atrophy, to strengthen an atrophied diaphragm, and mitigate the harms of mechanical ventilation. We tested the initial safety, feasibility, and impact on ventilation of this novel approach...
April 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28438213/cervid-herpesvirus-2-and-not-moraxella-bovoculi-caused-keratoconjunctivitis-in-experimentally-inoculated-semi-domesticated-eurasian-tundra-reindeer
#7
Morten Tryland, Javier Sánchez Romano, Nina Marcin, Ingebjørg Helena Nymo, Terje Domaas Josefsen, Karen Kristine Sørensen, Torill Mørk
BACKGROUND: Infectious keratoconjunctivitis (IKC) is a transmissible disease in semi-domesticated Eurasian reindeer (Rangifer tarandus tarandus). It is regarded as multifactorial and a single causative pathogen has not yet been identified. From clinical outbreaks we have previously identified Cervid herpesvirus 2 (CvHV2) and Moraxella bovoculi as candidates for experimental investigations. Eighteen reindeer were inoculated in the right eye with CvHV2 (n = 5), M. bovoculi (n = 5), CvHV2 and M...
April 24, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28438142/%C3%AE-molecular-epidemiological-analysis-of-adenoviruses-from-excess-conjunctivitis-cases
#8
A Balasopoulou, P Κokkinos, D Pagoulatos, P Plotas, O E Makri, C D Georgakopoulos, A Vantarakis
BACKGROUND: Τo perform a molecular epidemiological analysis of viral conjunctivitis among excess conjunctivitis cases recorded at the University Hospital of Patras, Greece, for the period March to June 2012. METHODS: A structured questionnaire containing demographic and clinical data was developed in order to collect retrospective data on the cases. Eye swab specimens were collected and molecular detection of adenoviruses was performed by nested PCR. Positive results were confirmed by sequencing...
April 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28432927/type-2-bvdv-n-pro-suppresses-ifn-1-pathway-signaling-in-bovine-cells-and-augments-brsv-replication
#9
Abdulrahman A Alkheraif, Christina L Topliff, Jay Reddy, Chandirasegaran Massilamany, Ruben O Donis, Gregor Meyers, Kent M Eskridge, Clayton L Kelling
Bovine viral diarrhea virus (BVDV) infection induces immunosuppression and in conjunction with bovine respiratory syncytial virus (BRSV) contributes to the bovine respiratory disease complex. Bovine turbinate cells were single or co-infected with type 2 BVDV wild-type (BVDV2-wt), its dysfunctional N(pro) mutant (BVDV2-E), and/or BRSV. BVDV2-E significantly up-regulated PKR, IRF-7, TBK-1, IRF-3, and IFN-β mRNAs based on real-time Q-RT-PCR. BRSV-infected cells expressed significantly up-regulated PKR, IRF-3, IRF-7, and IFN-β mRNAs, whereas BVDV2-wt, but not BVDV2-E, abolished this up-regulation in co-infection...
April 19, 2017: Virology
https://www.readbyqxmd.com/read/28405631/electric-cell-substrate-impedance-sensing-to-monitor-viral-growth-and-study-cellular-responses-to-infection-with-alphaherpesviruses-in-real-time
#10
Matthew R Pennington, Gerlinde R Van de Walle
Electric cell-substrate impedance sensing (ECIS) measures changes in an electrical circuit formed in a culture dish. As cells grow over a gold electrode, they block the flow of electricity and this is read as an increase in electrical impedance in the circuit. ECIS has previously been used in a variety of applications to study cell growth, migration, and behavior in response to stimuli in real time and without the need for cellular labels. Here, we demonstrate that ECIS is also a valuable tool with which to study infection by alphaherpesviruses...
March 2017: MSphere
https://www.readbyqxmd.com/read/28390162/concordance-of-hpv-dna-in-cervical-dysplasia-or-genital-warts-in-women-and-their-monogamous-long-term-male-partners
#11
Filip Rob, Ruth Tachezy, Tomáš Pichlík, Petr Škapa, Lukáš Rob, Eva Hamšíková, Jana Šmahelová, Jana Hercogová
Transmission of human papillomavirus (HPV) is a premise for development of cervical dysplasia and genital warts. This cross-sectional study assesses concordance of HPV types present in genital warts or cervical dysplasia in women and genital infection of their monogamous male partners in conjunction with seroprevalence of HPV-6,-11,-16 and -18 antibodies. Blood was taken from both women and men, as well a smear of the urogenital area of men. HPV DNA detection in women was done in fixed paraffin embedded tissues under histological control...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28352303/paediatric-virology-a-rapidly-increasing-educational-challenge
#12
Ioannis N Mammas, Maria Theodoridou, Anna Kramvis, Prakash Thiagarajan, Sharryn Gardner, Georgia Papaioannou, Angeliki Melidou, Maria Koutsaki, Georgia Kostagianni, Vassilis Achtsidis, Chryssie Koutsaftiki, Marcos Calachanis, Apostolos Zaravinos, Anne Greenough, Demetrios A Spandidos
The '2nd Workshop on Paediatric Virology', which took place on Saturday the 8th of October 2016 in Athens, Greece, provided an overview on recent views and advances on Paediatric Virology. Emphasis was given to HIV-1 management in Greece, a country under continuous financial crisis, hepatitis B vaccination in Africa, treatment options for hepatitis C virus in childhood, Zika virus in pregnancy and infancy, the burden of influenza on childhood, hand-foot-mouth disease and myocarditis associated with Coxsackie viruses...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28342559/-senegalese-experience-with-acute-viral-conjunctivitis
#13
A S Sow, H Kane, A M Ka, F T Hanne, J M M Ndiaye, J-P Diagne, M Nguer, S Sow, Y Saheli, E H M Sy, M E De Meideros Quenum, P A Ndoye Roth, E A Ba, P A Ndiaye
PURPOSE: To study the epidemiological and clinical aspects of acute enteroviral and adenoviral conjunctivitis. PATIENTS AND METHODS: A prospective study was conducted between January 1st and October 31st, 2015, jointly between two Ophthalmology services and a virology laboratory, which identified 51 patients. Were included all patients who presented a painful red eye without loss of visual acuity associated with secretions,evolving for less than 4weeks RESULTS: The mean age was 32 years, and the sex ratio 1:1...
April 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28340807/prevalence-of-human-herpesvirus-8-and-bk-polyoma-virus-infections-in-end-stage-renal-disease-and-the-influence-of-renal-transplantation
#14
A Turkmen, O Guven, S Mese, A Agacfidan, B Yelken, M Onel, Y Caliskan, G Celik, S Turkoglu, B Kocak
Viral infections lead to significant morbidity and mortality in kidney transplant recipients. We evaluated 49 kidney transplant recipients for human herpesvirus 8 (HHV-8) and BK polyomavirus infections in conjunction with data obtained from 43 donors. The seroprevalence of HHV-8 was 6.9% in donors and 12.2% in recipients. HHV-8 DNA was detected below the limit of quantification (<5000 copies/mL) in a recipient with HHV-8 seropositivity at the pretransplant period and was undetectable at month 3 after transplantation...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28299895/deep-sequencing-and-variant-analysis-of-an-italian-pathogenic-field-strain-of-equine-infectious-anaemia-virus
#15
K Cappelli, R F Cook, V Stefanetti, F Passamonti, G L Autorino, M T Scicluna, M Coletti, A Verini Supplizi, S Capomaccio
Equine infectious anaemia virus (EIAV) is a lentivirus with an almost worldwide distribution that causes persistent infections in equids. Technical limitations have restricted genetic analysis of EIAV field isolates predominantly to gag sequences resulting in very little published information concerning the extent of inter-strain variation in pol, env and the three ancillary open reading frames (ORFs). Here, we describe the use of long-range PCR in conjunction with next-generation sequencing (NGS) for rapid molecular characterization of all viral ORFs and known transcription factor binding motifs within the long terminal repeat of two EIAV isolates from the 2006 Italian outbreak...
March 15, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28298605/cxcr5-dependent-entry-of-cd8-t-cells-into-rhesus-macaque-b-cell-follicles-achieved-through-t-cell-engineering
#16
Victor I Ayala, Claire Deleage, Matthew T Trivett, Sumiti Jain, Lori V Coren, Matthew W Breed, Joshua A Kramer, James A Thomas, Jacob D Estes, Jeffrey D Lifson, David E Ott
Follicular helper CD4 T cells, TFH, residing in B-cell follicles within secondary lymphoid tissues, are readily infected by AIDS viruses and are a major source of persistent virus despite relative control of viral replication. This persistence is due at least in part to a relative exclusion of effective antiviral CD8 T cells from B-cell follicles. To determine whether CD8 T cells could be engineered to enter B-cell follicles, we genetically modified unselected CD8 T cells to express CXCR5, the chemokine receptor implicated in cellular entry into B-cell follicles...
March 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28287115/efficient-control-of-chronic-lcmv-infection-by-a-cd4-t-cell-epitope-based-heterologous-prime-boost-vaccination-in-a-murine-model
#17
Ran He, Xinxin Yang, Cheng Liu, Xiangyu Chen, Lin Wang, Minglu Xiao, Jianqiang Ye, Yuzhang Wu, Lilin Ye
CD4(+) T cells are essential for sustaining CD8(+) T cell responses during a chronic infection. The adoptive transfer of virus-specific CD4(+) T cells has been shown to efficiently rescue exhausted CD8(+) T cells. However, the question of whether endogenous virus-specific CD4(+) T cell responses can be enhanced by certain vaccination strategies and subsequently reinvigorate exhausted CD8(+) T cells remains unexplored. In this study, we developed a CD4(+) T cell epitope-based heterologous prime-boost immunization strategy and examined the efficacy of this strategy using a mouse model of chronic lymphocytic choriomeningitis virus (LCMV) infection...
March 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28278237/zika-virus-infection-of-rhesus-macaques-leads-to-viral-persistence-in-multiple-tissues
#18
Alec J Hirsch, Jessica L Smith, Nicole N Haese, Rebecca M Broeckel, Christopher J Parkins, Craig Kreklywich, Victor R DeFilippis, Michael Denton, Patricia P Smith, William B Messer, Lois M A Colgin, Rebecca M Ducore, Peta L Grigsby, Jon D Hennebold, Tonya Swanson, Alfred W Legasse, Michael K Axthelm, Rhonda MacAllister, Clayton A Wiley, Jay A Nelson, Daniel N Streblow
Zika virus (ZIKV), an emerging flavivirus, has recently spread explosively through the Western hemisphere. In addition to symptoms including fever, rash, arthralgia, and conjunctivitis, ZIKV infection of pregnant women can cause microcephaly and other developmental abnormalities in the fetus. We report herein the results of ZIKV infection of adult rhesus macaques. Following subcutaneous infection, animals developed transient plasma viremia and viruria from 1-7 days post infection (dpi) that was accompanied by the development of a rash, fever and conjunctivitis...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28217776/iron-acquisition-in-fungal-pathogens-of-humans
#19
Gaurav Bairwa, Won Hee Jung, James W Kronstad
The devastating infections that fungal pathogens cause in humans are underappreciated relative to viral, bacterial and parasitic diseases. In recent years, the contributions to virulence of reductive iron uptake, siderophore-mediated uptake and heme acquisition have been identified in the best studied and most life-threatening fungal pathogens: Candida albicans, Cryptococcus neoformans and Aspergillus fumigatus. In particular, exciting new work illustrates the importance of iron acquisition from heme and hemoglobin in the virulence of pathogenic yeasts...
February 20, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28216237/development-of-an-anti-ferret-cd4-monoclonal-antibody-for-the-characterisation-of-ferret-t-lymphocytes
#20
Daniel S Layton, Xiaowen Xiao, John D Bentley, Louis Lu, Cameron R Stewart, Andrew G D Bean, Timothy E Adams
The ferret is an established animal model for a number of human respiratory viral infections, such as influenza virus and more recently, Ebola virus. However, a paucity of immunological reagents has hampered the study of cellular immune responses. Here we describe the development and characterisation of a novel monoclonal antibody (mAb) against the ferret CD4 antigen and the characterisation of ferret CD4 T lymphocytes. Recombinant production and purification of the ferret CD4 ectodomain soluble protein allowed hybridoma generation and the generation of a mAb (FeCD4) showing strong binding to ferret CD4 protein and lymphoid cells by flow cytometry...
February 16, 2017: Journal of Immunological Methods
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