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Herpes Simplex Virus

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https://www.readbyqxmd.com/read/29052561/a-bayesian-stepwise-discriminant-model-for-predicting-risk-factors-of-preterm-premature-rupture-of-membranes-a-case-control-study
#1
Li-Xia Zhang, Yang Sun, Hai Zhao, Na Zhu, Xing-De Sun, Xing Jin, Ai-Min Zou, Yang Mi, Ji-Ru Xu
BACKGROUND: Preterm premature rupture of membrane (PPROM) can lead to serious consequences such as intrauterine infection, prolapse of the umbilical cord, and neonatal respiratory distress syndrome. Genital infection is a very important risk which closely related with PPROM. The preliminary study only made qualitative research on genital infection, but there was no deep and clear judgment about the effects of pathogenic bacteria. This study was to analyze the association of infections with PPROM in pregnant women in Shaanxi, China, and to establish Bayesian stepwise discriminant analysis to predict the incidence of PPROM...
October 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29052452/what-is-the-role-of-staphylococcus-aureus-and-herpes-virus-infections-in-the-pathogenesis-of-atopic-dermatitis
#2
Simone Saintive, Eliane Abad, Dennis de C Ferreira, Mayra Stambovsky, Fernanda S Cavalcante, Lucio S Gonçalves, Fabio Vidal, Katia Rn Dos Santos
Atopic dermatitis (AD) is a chronic, relapsing disease. Genetic, environmental and immunological factors are involved in its pathophysiology. Individuals with AD have an increased predisposition to colonization and/or infection of the skin by various pathogens, especially Staphylococcus aureus and herpes simplex virus. The composition of their skin microbiome is also different, and changes during flares. The disease severity can be related to the degree of colonization by S. aureus. In addition, the presence of this bacterial species can predispose the host to more severe and disseminated viral infections...
October 20, 2017: Future Microbiology
https://www.readbyqxmd.com/read/29046461/human-embryonic-stem-cell-derived-neurons-are-highly-permissive-for-varicella-zoster-virus-lytic-infection
#3
Tomohiko Sadaoka, Cindi L Schwartz, Labchan Rajbhandari, Arun Venkatesan, Jeffrey I Cohen
Varicella-zoster virus (VZV) is highly cell-associated when grown in culture and has a much higher (4,000 to 20,000-fold increased) particle-to-plaque forming unit (PFU) ratio in vitro than herpes simplex virus (HSV). In contrast, VZV is highly infectious in vivo by airborne transmission. Neurons are major targets for VZV in vivo, in which the virus can establish latency and reactivate to produce infectious virus. Using neurons derived from human embryonic stem cells (hESC) and cell-free wild-type (WT) VZV, we demonstrate that neurons are nearly 100 times more permissive for WT VZV infection than very early passage human embryonic lung cells or MRC-5 diploid human fibroblasts, the cells used for vaccine production or virus isolation...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29046455/extended-synaptotagmin-1-interacts-with-the-herpes-simplex-virus-type-1-glycoprotein-m-and-negatively-modulates-virus-induced-membrane-fusion
#4
Imane El Kasmi, Bita Khadivjam, Miki Lackman, Johanne Duron, Eric Bonneil, Pierre Thibault, Roger Lippé
Enveloped viruses typically encode their own fusion machinery to enter cells. Herpesviruses are particular as they fuse with a number of cellular compartments throughout their life cycle. As the uncontrolled mixing of the host membranes should be avoided in these events, the tight regulation of the viral fusion machinery is critical. While studying the herpes simplex virus type 1 glycoprotein gM, we identified the cellular protein E-Syt1 (Extended synaptotagmin-1) as an interaction partner. This took place in both infected and transfected cells, suggesting other viral proteins were not required for this interaction...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29046447/a-functional-carboxy-terminal-fluorescent-protein-fusion-to-pseudorabies-virus-small-capsid-protein-vp26
#5
Ian B Hogue, Jolie Jean, Andrew D Esteves, Nikhila S Tanneti, Julian Scherer, Lynn W Enquist
Fluorescent protein fusions to herpesvirus capsids have proven to be a valuable method to study virus particle transport in living cells. Fluorescent protein fusions to the amino terminus of small capsid protein VP26 are the most widely-used method to visualize Pseudorabies Virus (PRV) and Herpes Simplex Virus (HSV) particles in living cells. However, these fusion proteins do not incorporate to full occupancy, and have modest effects on virus replication and pathogenesis. Recent cryo electron microscopy studies have revealed that herpesvirus small capsid proteins bind to capsids via their amino terminus, whereas the carboxy terminus is unstructured and may therefore better tolerate fluorescent protein fusions...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29046357/structural-and-thermodynamic-analyses-reveal-critical-features-of-glycopeptide-recognition-by-the-human-pilr%C3%AE-immune-cell-receptor
#6
Atsushi Furukawa, Kosuke Kakita, Tomoki Yamada, Mikihiro Ishizuka, Jiro Sakamoto, Nanao Hatori, Naoyoshi Maeda, Fumina Ohsaka, Takashi Saitoh, Takao Nomura, Kimiko Kuroki, Hisanori Nambu, Hisashi Arase, Shigeki Matsunaga, Masahiro Anada, Toyoyuki Ose, Shunichi Hashimoto, Katsumi Maenaka
Before entering host cells, herpes simplex virus-1 (HSV-1) uses its envelope glycoprotein B (gB) to bind paired immunoglobulin-like type 2 receptor α (PILRα) on immune cells. PILRα belongs to the Siglec (sialic acid (SA)-binding immunoglobulin-like lectin)-like family, members of which bind SA. PILRα is the only Siglec member to recognize not only the sialylated O-linked sugar T antigen (sTn) but also its attached peptide region. We previously determined the crystal structure of PILRα complexed with the sTn-linked glycopeptide of gB, revealing the simultaneous recognition of sTn and peptide by the receptor...
October 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29044877/sustained-fxn-expression-in-dorsal-root-ganglia-from-a-nonreplicative-genomic-hsv-1-vector
#7
Maria Ventosa, Zetang Wu, Filip Lim
BACKGROUND: Friedreich's ataxia (FA) is an autosomal recessive neurodegenerative disease caused by mutations in the frataxin gene (FXN), which lead to reduced levels of the essential mitochondrial protein frataxin. Currently there is no effective cure. METHODS: With the aim of developing a gene therapy for FA neuropathology, here we describe the construction and preliminary characterization of a high capacity nonreplicative genomic herpes simplex virus type 1 vector (H24B-FXNlac vector) carrying a reduced version of the human FXN genomic locus, comprising the 5 kb promoter and the FXN cDNA with the inclusion of intron 1...
October 17, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29043989/antiviral-screening-of-four-plant-extracts-against-acyclovir-resistant-herpes-simplex-virus-type-1
#8
Masoud Parsania, Mohammad-Bagher Rezaee, Seyed Hamidreza Monavari, Kamkar Jaimand, Seyed Milad Mousavi-Jazayeri, Mehdi Razazian, Mohammad Hossein Nadjarha
Herpes simplex virus type 1 (HSV-1) causes serious infections particularly in immunocompromised patients. Methanolic extract of four plants were evaluated for their anti-viral effects against acyclovir resistant HSV-1 in HeLa cell line. The 50% cytotoxic concentration (CC50) as well as the effective minimal cytotoxic concentration of each plant extract were evaluated by MTT assay. Antiviral effects of the plant extracts on HSV-1 were examined at different concentrations of the extract. The effective minimal cytotoxic concentration was evaluated at different times of virus replication after infection...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29038422/trim29-promotes-dna-virus-infections-by-inhibiting-innate-immune-response
#9
Junji Xing, Ao Zhang, Hua Zhang, Jin Wang, Xian Chang Li, Mu-Sheng Zeng, Zhiqiang Zhang
Many double-stranded DNA viruses, such as Epstein-Barr virus, can establish persistent infection, but the underlying virus-host interactions remain poorly understood. Here we report that in human airway epithelial cells Epstein-Barr virus induces TRIM29, a member of the TRIM family of proteins, to inhibit innate immune activation. Knockdown of TRIM29 in airway epithelial cells enhances type I interferon production, and in human nasopharyngeal carcinoma cells results in almost complete Epstein-Barr virus clearance...
October 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29037754/antiviral-effects-of-lactobacillus-crispatus-against-hsv-2-in-mammalian-cell-lines
#10
Elham Mousavi, Manoochehr Makvandi, Ali Teimoori, Angila Ataei, Shokouh Ghafari, Alireza Samarbaf-Zadeh
BACKGROUND: Herpes simplex virus type 2 (HSV-2) infectious disease is one of the most common viral sexually transmitted diseases. As regards, vaginal lactobacilli play an important role in protecting host against the urogenital pathogens; here we assessed the potential antiviral activity of Lactobacillus crispatus against HSV-2 infection in vitro. METHODS: Both Vero and HeLa cell lines were treated by L. crispatus before, during and after HSV-2 infection. The pre-incubation assay was also performed for the evaluating of virus adsorption by L...
October 13, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29036805/determining-the-igm-and-igg-antibodies-titer-against-hsv1-hsv2-and-cmv-in-the-serum-of-schizophrenia-patients
#11
Masome Mohagheghi, Mohammad Yousef Alikhani, Mohammad Taheri, Mohammad Mahdi Eftekharian
Schizophrenia is a destructive clinical syndrome with diverse mental pathologies. Different mechanisms and factors have a role in this disease. A possible mechanism is that teratogenic viruses cause brain changes and results in the disease appearance. The schizophrenia patients were diagnosed by psychologists and with the consent of patients, five CC of venous blood was drawn. Than Serum samples were isolated and immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies against herpes simplex virus-1 (HSV-1), herpes simplex virus-2 (HSV-2) and cytomegalovirus (CMV) were quantified by ELISA sandwich kit...
September 8, 2017: Human Antibodies
https://www.readbyqxmd.com/read/29036216/herpesviruses-in-etiopathogenesis-of-aggressive-periodontitis-a-meta-analysis-based-on-case-control-studies
#12
Fei Li, Ce Zhu, Feng-Ying Deng, May Chun Mei Wong, Hai-Xia Lu, Xi-Ping Feng
OBJECTIVE: Previous studies have found that herpesviruses are associated with aggressive periodontitis (AgP). However, these findings are controversial. This meta-analysis was aimed at clarifying the association between herpesviruses and AgP. METHODS: We identified eligible case-control studies evaluating the association between herpesviruses and AgP from PubMed and Embase databases in October 2015. Original data were extracted and quality assessment was done. Overall odds ratios (ORs) and 95% confidence intervals (CIs) were estimated...
2017: PloS One
https://www.readbyqxmd.com/read/29035763/optimized-enzyme-linked-immunosorbent-assay-for-detecting-cytomegalovirus-infections-during-clinical-trials-of-recombinant-vaccines
#13
Anke Pagnon, Fabienne Piras, Sophie Gimenez-Fourage, Joseline Dubayle, Nadège Arnaud-Barbe, Catherine Hessler, Catherine Caillet
BACKGROUND: In clinical trials of cytomegalovirus (CMV) glycoprotein B (gB) vaccines, CMV infection is detected by first depleting serum of anti-gB antibodies and then measuring anti-CMV antibodies with a commercially available enzyme-linked immunosorbent assay (ELISA) kit, with confirmation of positive findings by immunoblot. OBJECTIVES: Identification of CMV immunoantigens for the development of an ELISA that detects specifically CMV infection in clinical samples from individuals immunized with gB vaccines...
October 9, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29034838/formulation-optimization-and-evaluation-of-organogel-for-topical-delivery-of-acyclovir
#14
Smita Bonde, Chandrakant Bonde, Nisarg Mavani
BACKGROUND: The conventional acyclovir topical therapy has a low efficacy, due to the lack of penetration of a sufficient amount of drug to the target site. OBJECTIVE: The aim of this work was to formulate and optimize organogel containing acyclovir to enhance the penetration and retention time of acyclovir in the basal epidermis, site of Herpes simplex virus infections. METHODS: Microemulsion based organogel containing acyclovir was developed using the combination of surfactants, polar and nonpolar solvents...
October 13, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/29034313/newly-characterized-murine-undifferentiated-sarcoma-models-sensitive-to-virotherapy-with-oncolytic-hsv-1-m002
#15
Eric K Ring, Rong Li, Blake P Moore, Li Nan, Virginia M Kelly, Xiaosi Han, Elizabeth A Beierle, James M Markert, Jianmei W Leavenworth, G Yancey Gillespie, Gregory K Friedman
Despite advances in conventional chemotherapy, surgical techniques, and radiation, outcomes for patients with relapsed, refractory, or metastatic soft tissue sarcomas are dismal. Survivors often suffer from lasting morbidity from current treatments. New targeted therapies with less toxicity, such as those that harness the immune system, and immunocompetent murine sarcoma models to test these therapies are greatly needed. We characterized two new serendipitous murine models of undifferentiated sarcoma (SARC-28 and SARC-45) and tested their sensitivity to virotherapy with oncolytic herpes simplex virus 1 (HSV-1)...
December 15, 2017: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/29033632/review-of-viral-encephalitis-cases-seen-at-a-tertiary-care-center-in-turkey-focus-on-herpes-simplex-type-1
#16
Beyza Çiftçi Kavaklioğlu, Eda Çoban, Aysu Şen, Elif Söylemezoğlu, Mehmet Ali Aldan, Dilek Atakli, Aysun Soysal
INTRODUCTION: The objective of this study was to determine the incidence of herpes simplex encephalitis (HSE), known as the most common, potentially mortal, and treatable cause of sporadic encephalitis, in a sample Turkish population. METHODS: The demographic, clinical, laboratory, imaging, electrophysiology, and polymerase chain reaction (PCR) DNA results of patients examined with a pre-diagnosis of encephalitis were retrospectively examined. RESULTS: A total of 68 patients were included in the study...
September 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/29031157/a-european-multi-centre-external-quality-assessment-eqa-study-on-phenotypic-and-genotypic-methods-used-for-herpes-simplex-virus-hsv-drug-resistance-testing
#17
Baharak Afshar, David F Bibby, Renata Piorkowska, Natasha Ohemeng-Kumi, Robert Snoeck, Graciela Andrei, Sarah Gillemot, Florence Morfin, Emilie Frobert, Sonia Burrel, David Boutolleau, Brendan Crowley, Jean L Mbisa
BACKGROUND: Herpes Simplex Virus (HSV) drug resistance is a significant public health concern among immunocompromised individuals. Phenotypic assays are considered the gold standard method for detecting HSV drug resistance. However, plaque reduction assays (PRAs) are technically demanding, often with long turnaround times of up to four weeks. In contrast, genotypic tests can be performed within a few days. OBJECTIVES: The development and coordination of the first European External Quality Assessment (EQA) study to evaluate phenotypic and genotypic methods used for HSV drug resistance testing in specialised reference laboratories...
October 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29030535/reply-to-herpes-simplex-virus-1-macrophages-and-the-cornea
#18
Dhong Hyun Lee, Homayon Ghiasi
No abstract text is available yet for this article.
November 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29026166/virus-and-host-specific-differences-in-oral-human-herpesvirus-shedding-kinetics-among-ugandan-women-and-children
#19
Laura Matrajt, Soren Gantt, Bryan T Mayer, Elizabeth M Krantz, Jackson Orem, Anna Wald, Lawrence Corey, Joshua T Schiffer, Corey Casper
Human herpesviruses (HHV) establish lifelong latent infection and are transmitted primarily via shedding at mucosal surfaces. Each HHV causes a unique spectrum of disease depending on the infected individual's age and immunity. We collected weekly oral swabs from young children and mothers in 32 Ugandan households for a median of one year. We characterized kinetics of oral shedding during primary and chronic infection for each virus. Cytomegalovirus (CMV), Epstein-Barr virus (EBV), and HHV-6 were shed at high rates following primary infection...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29025633/association-between-male-circumcision-and-women-s-biomedical-health-outcomes-a-systematic-review
#20
Jonathan M Grund, Tyler S Bryant, Inimfon Jackson, Kelly Curran, Naomi Bock, Carlos Toledo, Joanna Taliano, Sheng Zhou, Jorge Martin Del Campo, Ling Yang, Apollo Kivumbi, Peizi Li, Sherri Pals, Stephanie M Davis
BACKGROUND: Male circumcision reduces men's risk of acquiring HIV and some sexually transmitted infections from heterosexual exposure, and is essential for HIV prevention in sub-Saharan Africa. Studies have also investigated associations between male circumcision and risk of acquisition of HIV and sexually transmitted infections in women. We aimed to review all evidence on associations between male circumcision and women's health outcomes to benefit women's health programmes. METHODS: In this systematic review we searched for peer-reviewed and grey literature publications reporting associations between male circumcision and women's health outcomes up to April 11, 2016...
November 2017: Lancet Global Health
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