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Viral conjunctivitis

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https://www.readbyqxmd.com/read/28694795/modulation-of-host-mirnas-transcriptome-in-lung-and-spleen-of-peste-des-petits-ruminants-virus-infected-sheep-and-goats
#1
Aruna Pandey, Amit R Sahu, Sajad A Wani, Shikha Saxena, Sonam Kanchan, Vaishali Sah, Kaushal K Rajak, Alok Khanduri, Aditya P Sahoo, Ashok K Tiwari, Bina Mishra, D Muthuchelvan, Bishnu P Mishra, Raj K Singh, Ravi K Gandham
Peste des petits ruminants (PPR) is one of the highly contagious viral disease, characterized by fever, sore mouth, conjunctivitis, gastroenteritis, and pneumonia, primarily affecting sheep and goats. Reports suggested variable host response in goats and sheep and this host response vis-a-vis the expression of microRNAs (miRNAs) has not been investigated. Here, miRNAs were sequenced and proteomics data were generated to identify the role of differentially expressed miRNA (DEmiRNA) in PPR virus (PPRV) infected lung and spleen tissues of sheep and goats...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28684158/the-high-mobility-group-at-hook-1-protein-stimulates-bovine-herpesvirus-1-productive-infection
#2
Liqian Zhu, Clinton Jones
Bovine herpesvirus 1 (BoHV-1) is an important pathogen of cattle that causes clinical symptoms in the upper respiratory tract and conjunctivitis. Like most alpha-herpesvirinae subfamily members, BoHV-1 establishes latency in sensory neurons. Stress consistently induces reactivation from latency, which is essential for virus transmission. Recent studies demonstrated that a viral protein (ORF2) expressed in a subset of latently infected neurons is associated with β-catenin and the high mobility group AT-hook 1 protein (HMGA1), which correlates with increased expression of these proteins in latently infected neurons...
July 3, 2017: Virus Research
https://www.readbyqxmd.com/read/28683899/zika-virus-cutaneous-manifestations-in-3-patients
#3
A Cosano-Quero, V Velasco-Tirado, M P Sánchez Seco, L Manzanedo-Bueno, M Belhassen-García
Zika virus infection should be suspected in travelers or immigrants with the signs or symptoms of a viral infection (rash, fever, joint pains, conjunctivitis, headache, etc.) and a compatible epidemiological history. Although cutaneous manifestations are among the most common clinical signs of Zika, they are not specific and very few images are available. We present 3 patients (2 travelers and 1 immigrant) in whom a rash was the presenting manifestation of Zika virus infection. Prompt diagnosis optimizes outcomes in these patients, improves the management of severe disease, and minimizes the risk of local transmission by Aedes albopictus, now a potential local vector for the virus due to its presence in areas along Spain's Mediterranean coast...
July 3, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28657731/structural-effects-of-single-mutations-in-a-filamentous-viral-capsid-across-multiple-length-scales
#4
Gili Abramov, Rona Shaharabani, Omry Morag, Ram Avinery, Anat Haimovich, Inbal Oz, Roy Beck, Amir Goldbourt
Filamentous bacteriophage (phage) are single-stranded DNA viruses that infect bacteria. Single-site mutants of fd phage have been studied by magic-angle spinning nuclear magnetic resonance and by small angle X-ray scattering. Detailed analysis has been performed that provides insight into structural variations on three length scales. The results, analyzed in conjunction with existing literature data, suggest that a single charge mutation on the capsid surface affects direct inter-viral interactions but not the structure of individual particles or the macro-scale organization...
June 28, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28625133/recent-advances-in-targeting-the-hiv-1-tat-tar-complex
#5
Fardokht A Abulwerdi, Stuart F J Le Grice
Following seminal discoveries by Rosen and co-workers in 1985, the HIV-1 TAR has emerged as one of the most extensively studied regulatory elements of the HIV-1 genome. Located adjacent to the long terminal repeat promoter, this cis-acting motif, in conjunction with the viral Tat protein, plays a critical role in viral genomic RNA synthesis via modification of the transcription complex. As such, the Tat/TAR axis has been the subject of intense efforts aimed at developing therapeutic interventions, directed against both the protein and nucleic acid components...
June 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28620577/population-structure-of-the-soft-tick-ornithodoros-maritimus-and-its-associated-infectious-agents-within-a-colony-of-its-seabird-host-larus-michahellis
#6
Marlene Dupraz, Céline Toty, Elodie Devillers, Thomas Blanchon, Eric Elguero, Marion Vittecoq, Sara Moutailler, Karen D McCoy
The epidemiology of vector-borne zoonoses depends on the movement of both hosts and vectors, which can differ greatly in intensity across spatial scales. Because of their life history traits and small size, vector dispersal may be frequent, but limited in distance. However, little information is available on vector movement patterns at local spatial scales, and particularly for ticks, transmitting the greatest diversity of recognized infectious agents. To test the degree to which ticks can disperse and disseminate pathogens at local scales, we investigated the temporal dynamics and population structure of the soft tick Ornithodoros maritimus within a colony of its seabird host, the Yellow-legged gull Larus michahellis...
August 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28602961/progress-and-biotechnological-prospects-in-fish-transgenesis
#7
REVIEW
Fernanda M P Tonelli, Samyra M S N Lacerda, Flávia C P Tonelli, Guilherme M J Costa, Luiz Renato de França, Rodrigo R Resende
The history of transgenesis is marked by milestones such as the development of cellular transdifferentiation, recombinant DNA, genetic modification of target cells, and finally, the generation of simpler genetically modified organisms (e.g. bacteria and mice). The first transgenic fish was developed in 1984, and since then, continuing technological advancements to improve gene transfer have led to more rapid, accurate, and efficient generation of transgenic animals. Among the established methods are microinjection, electroporation, lipofection, viral vectors, and gene targeting...
June 8, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28596938/genome-edited-t-cell-therapies
#8
REVIEW
Juliette M K M Delhove, Waseem Qasim
PURPOSE OF REVIEW: Alternative approaches to conventional drug-based cancer treatments have seen T cell therapies deployed more widely over the last decade. This is largely due to their ability to target and kill specific cell types based on receptor recognition. Introduction of recombinant T cell receptors (TCRs) using viral vectors and HLA-independent T cell therapies using chimeric antigen receptors (CARs) are discussed. This article reviews the tools used for genome editing, with particular emphasis on the applications of site-specific DNA nuclease mediated editing for T cell therapies...
2017: Current Stem Cell Reports
https://www.readbyqxmd.com/read/28592530/kaposi-s-sarcoma-associated-herpesvirus-utilizes-and-manipulates-rna-n-6-adenosine-methylation-to-promote-lytic-replication
#9
Fengchun Ye, E Ricky Chen, Timothy W Nilsen
N(6)-adenosine methylation (m(6)A) is the most common post-transcriptional RNA modification in mammalian cells. We found that most transcripts encoded by Kaposi's sarcoma-associated herpesvirus (KSHV) undergo m(6)A modification. The levels of m(6)A-modified mRNAs increase substantially upon stimulation for lytic replication. Blocking m(6)A inhibits splicing of the pre-mRNA encoding replication transcription activator (RTA), a key KSHV lytic switch protein, and halts viral lytic replication. We identified several m(6)A sites in RTA pre-mRNA crucial for splicing through interactions with YTH domain containing 1 (YTHDC1), an m(6)A nuclear reader protein, in conjunction with serine/arginine-rich splicing factor 3 (SRSF3) and SRSF10...
June 7, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28588491/therapeutic-effects-of-breviscapine-in-cardiovascular-diseases-a-review
#10
REVIEW
Jialiang Gao, Guang Chen, Haoqiang He, Chao Liu, Xingjiang Xiong, Jun Li, Jie Wang
Breviscapine is a crude extract of several flavonoids of Erigeron breviscapus (Vant.) Hand.-Mazz., containing more than 85% of scutellarin, which has been traditionally used in China as an activating blood circulation medicine to improve cerebral blood supply. Accumulating evidence from various in vivo and in vitro studies has shown that breviscapine exerts a broad range of cardiovascular pharmacological effects, including vasodilation, protection against ischaemia/reperfusion (I/R), anti-inflammation, anticoagulation, antithrombosis, endothelial protection, myocardial protection, reduction of smooth muscle cell migration and proliferation, anticardiac remodeling, antiarrhythmia, blood lipid reduction, and improvement of erectile dysfunction...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28583446/phenotypic-and-genetic-aspects-of-epithelial-barrier-function-in-asthmatic-patients
#11
REVIEW
Matthew Loxham, Donna E Davies
The bronchial epithelium is continuously exposed to a multitude of noxious challenges in inhaled air. Cellular contact with most damaging agents is reduced by the action of the mucociliary apparatus and by formation of a physical barrier that controls passage of ions and macromolecules. In conjunction with these defensive barrier functions, immunomodulatory cross-talk between the bronchial epithelium and tissue-resident immune cells controls the tissue microenvironment and barrier homeostasis. This is achieved by expression of an array of sensors that detect a wide variety of viral, bacterial, and nonmicrobial (toxins and irritants) agents, resulting in production of many different soluble and cell-surface molecules that signal to cells of the immune system...
June 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28539842/a-review-of-antiviral-use-for-the-treatment-of-chronic-hepatitis-b-virus-infection-in-pregnant-women
#12
Ariel Jaffe, Robert S Brown
Mother-to-child transmission (MTCT) of hepatitis B virus (HBV) remains high even with the proper use of active-passive immunoprophylaxis in newborns. Mothers with significant viremia are at a much higher risk of MTCT; therefore, treatments aimed at lowering HBV DNA levels during pregnancy may ultimately decrease global disease burden. The exact threshold for treatment remains controversial; however, most studies have accepted levels greater than 2 × 5 log10 IU/mL as significant viremia. We reviewed the most recent literature on antiviral efficacy, maternal and fetal safety, and viral resistance patterns when used for short-duration therapy in pregnancy...
March 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28535396/molecular-identification-of-viral-agents-associated-with-acute-conjunctivitis-a-prospective-controlled-study
#13
Emine Akçay, Ahmet Çarhan, Gözde Hondur, Zeliha Koçak Tufan, Necati Duru, Selçuk Kılıç, Ezgi Naz Ensari, Nagihan Uğurlu, Nurullah Çağıl
BACKGROUND: Viral conjunctivitis are the most frequent infections in ophthalmology clinics. The diagnosis is usually relying on clinical findings and medical history. However, topical antibiotics are often used unnecessarily addition to symptomatic treatment because of unsure agents. We aimed to detect the Adenovirus, Coxsackievirus and Enterovirus from conjunctiva and pharyngeal samples of patients. METHODS: The conjunctiva and pharyngeal samples of the patients with conjunctivitis were taken by Virocult transport media and kept at -80̊C up to study day...
May 20, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28528687/molecular-mechanisms-underlying-human-papillomavirus-e6-and-e7-oncoprotein-induced-cell-transformation
#14
REVIEW
Suruchi Mittal, Lawrence Banks
Human papillomaviruses (HPVs) are the causative agents of 5% of all human cancers, with cervical cancer being the most important. Two viral oncoproteins, E6 and E7, are essential for the development and maintenance of malignancy. Both proteins function by targeting critical pathways that are essential for maintaining cellular homeostasis. As a consequence of these activities, this produces an environment that is favourable for the normal viral life cycle, but when perturbed, can result in the initiation of changes to the host cell, which ultimately results in the development of a malignancy...
April 2017: Mutation Research
https://www.readbyqxmd.com/read/28523438/reversible-splenial-lesions-presenting-in-conjunction-with-febrile-illness-a-case-series-and-literature-review
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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...
July 2017: Critical Care Medicine
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