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https://www.readbyqxmd.com/read/28717130/polymicrobial-infections-in-brain-tissue-from-alzheimer-s-disease-patients
#1
Diana Pisa, Ruth Alonso, Ana M Fernández-Fernández, Alberto Rábano, Luis Carrasco
Several studies have advanced the idea that the etiology of Alzheimer's disease (AD) could be microbial in origin. In the present study, we tested the possibility that polymicrobial infections exist in tissue from the entorhinal cortex/hippocampus region of patients with AD using immunohistochemistry (confocal laser scanning microscopy) and highly sensitive (nested) PCR. We found no evidence for expression of early (ICP0) or late (ICP5) proteins of herpes simplex virus type 1 (HSV-1) in brain sections. A polyclonal antibody against Borrelia detected structures that appeared not related to spirochetes, but rather to fungi...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716140/modelling-infectious-diseases-with-relapse-a-case-study-of-hsv-2
#2
Jinliang Wang, Xiaoqing Yu, Heidi L Tessmer, Toshikazu Kuniya, Ryosuke Omori
BACKGROUND: Herpes Simplex Virus Type 2 (HSV-2) is one of the most common sexually transmitted diseases. Although there is still no licensed vaccine for HSV-2, a theoretical investigation of the potential effects of a vaccine is considered important and has recently been conducted by several researchers. Although compartmental mathematical models were considered for each special case in the previous studies, as yet there are few global stability results. RESULTS: In this paper, we formulate a multi-group SVIRI epidemic model for HSV-2, which enables us to consider the effects of vaccination, of waning vaccine immunity, and of infection relapse...
July 17, 2017: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/28712033/oncolytic-immunotherapy-unlocking-the-potential-of-viruses-to-help-target-cancer
#3
REVIEW
Omid Hamid, Brianna Hoffner, Eduard Gasal, Jenny Hong, Richard D Carvajal
Oncolytic immunotherapy is a research area of cancer immunotherapy investigating the use of modified viruses to target cancer cells. A variety of different viral backbones (e.g., adenovirus, reovirus) with a diverse range of genetic modifications are currently being investigated for the treatment of a variety of cancers. The oncolytic virus that has advanced the furthest in clinical development is talimogene laherparepvec, a recombinant HSV-1 virus expressing granulocyte-macrophage colony-stimulating factor (GM-CSF)...
July 15, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28711653/highly-conserved-intragenic-hsv-2-sequences-results-from-next-generation-sequencing-of-hsv-2-ul-and-us-regions-from-genital-swabs-collected-from-3-continents
#4
Christine Johnston, Amalia Magaret, Pavitra Roychoudhury, Alexander L Greninger, Anqi Cheng, Kurt Diem, Matthew P Fitzgibbon, Meei-Li Huang, Stacy Selke, Jairam R Lingappa, Connie Celum, Keith R Jerome, Anna Wald, David M Koelle
INTRODUCTION: Understanding the variability in circulating herpes simplex virus type 2 (HSV-2) genomic sequences is critical to the development of HSV-2 vaccines. METHODS: Genital lesion swabs containing ≥ 10(7)log10 copies HSV DNA collected from Africa, the USA, and South America underwent next-generation sequencing, followed by K-mer based filtering and de novo genomic assembly. Sites of heterogeneity within coding regions in unique long and unique short (UL_US) regions were identified...
July 13, 2017: Virology
https://www.readbyqxmd.com/read/28711628/enteric-glia-regulate-gastrointestinal-motility-but-are-not-required-for-maintenance-of-the-epithelium-in-mice
#5
Meenakshi Rao, Daniella Rastelli, Lauren Dong, Sophia Chiu, Wanda Setlik, Michael D Gershon, Gabriel Corfas
BACKGROUND & AIMS: When the glial fibrillary acidic protein (GFAP) promoter is used to express cellular toxins that eliminate glia in mice, intestinal epithelial permeability and proliferation increase; this led to the concept that glia are required for maintenance of the gastrointestinal epithelium. Many enteric glia, however, particularly in the mucosa, do not express GFAP. In contrast, virtually all enteric glia express proteolipid protein 1 (PLP1). We investigated whether elimination of PLP1-expressing cells compromises epithelial maintenance or gastrointestinal motility...
July 12, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28711432/inactivated-orf-virus-shows-disease-modifying-antiviral-activity-in-a-guinea-pig-model-of-genital-herpesvirus-infection
#6
Astrid Friebe, Angela Siegling, Olaf Weber
BACKGROUND: Inactivated Orf virus (iORFV) has been used as a preventative as well as a therapeutic immunomodulator in veterinary medicine in different species. iORFV elicits strong effects on cytokine secretion in mice and human immune cells leading to an auto-regulated loop of initial up-regulation of inflammatory and Th1-related cytokines followed by Th2-related cytokines that attenuate immunopathology. The therapeutic potential of iORFV has been recognized in several models for difficult-to-treat disease areas such as chronic viral diseases, liver fibrosis or various forms of cancer...
June 27, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28710254/the-plasticity-and-stability-of-regulatory-t-cells-during-viral-induced-inflammatory-lesions
#7
Siddheshvar Bhela, Siva Karthik Varanasi, Ujjaldeep Jaggi, Sarah S Sloan, Naveen K Rajasagi, Barry T Rouse
Ocular infection with HSV causes a chronic T cell-mediated inflammatory lesion in the cornea. Lesion severity is affected by the balance of different CD4 T cell subsets, with greater severity occurring when the activity of regulatory T cells (Tregs) is compromised. In this study, fate-mapping mice were used to assess the stability of Treg function in ocular lesions. We show that cells that were once Foxp3(+) functional Tregs may lose Foxp3 and become Th1 cells that could contribute to lesion expression. The instability primarily occurred with IL-2R(lo) Tregs and was shown, in part, to be the consequence of exposure to IL-12...
July 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28709621/role-of-n-acetyl-galactosamine-4-so4-a-ligand-of-cd206-in-hsv-induced-mouse-model-of-beh%C3%A3-et-s-disease
#8
Bunsoon Choi, Hasan M Sayeed, S M Shamsul Islam, Seonghyang Sohn
CD206 is a macrophage mannose receptor involved in variety of autoimmune and inflammatory diseases. This study aimed to identify the pathogenic role of CD206 in a herpes simplex virus (HSV) induced Behçet's disease (BD) mouse model. CD206 positive cells were detected in peripheral blood mononuclear cells and quantified by flow cytometry. Levels of cytokines were measured by ELISA. CD206 was found to be down-regulated both in vitro (10(-6) M) and in vivo (200μg/mouse) after treatment with N-acetylgalactosamine (GalNAc), a ligand for CD206...
July 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28708188/validation-of-a-membrane-touch-biosensor-for-the-qualitative-detection-of-igg-class-antibodies-to-herpes-simplex-virus-type-2
#9
Tony Loughman, Baljit Singh, Brian Seddon, Philip Noone, Padmanabhan Santhosh
A novel type of biosensor was assessed for application to the qualitative determination of circulating antibodies to herpes simplex virus type 2 (HSV-2). The device utilises a high activity HSV-2 type specific gG2 antigen for antibody capture and commercially available ELISA reagents. The study compares the diagnostic performance of a prototype HSV-2 biochip to well-established in vitro tests routinely applied in clinical procedures. A panel of human serum samples (n = 60) previously characterised for HSV-2 serological status using the DiaSorin LIAISON® HSV-2 chemiluminescent immunoassay were assayed on the HSV-2 biochip and the Focus Diagnostics HerpeSelect® 2 ELISA IgG kit to determine concordance with the predicate test method...
July 14, 2017: Analyst
https://www.readbyqxmd.com/read/28705656/impact-of-enteroviral-polymerase-chain-reaction-testing-on-length-of-stay-for-infants-60-days-old-or-younger
#10
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/28705429/disinfection-of-tonometers-a-report-by-the-american-academy-of-ophthalmology
#11
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
https://www.readbyqxmd.com/read/28704950/structure-activity-relationships-of-acyclic-selenopurine-nucleosides-as-antiviral-agents
#12
Pramod K Sahu, Tamima Umme, Jinha Yu, Gyudong Kim, Shuhao Qu, Siddhi D Naik, Lak Shin Jeong
A series of acyclic selenopurine nucleosides 3a-f and 4a-g were synthesized based on the bioisosteric rationale between oxygen and selenium, and then evaluated for antiviral activity. Among the compounds tested, seleno-acyclovir (4a) exhibited the most potent anti-herpes simplex virus (HSV)-1 (EC50 = 1.47 µM) and HSV-2 (EC50 = 6.34 µM) activities without cytotoxicity up to 100 µM, while 2,6-diaminopurine derivatives 4e-g exhibited significant anti-human cytomegalovirus (HCMV) activity, which is slightly more potent than the guanine derivative 4d, indicating that they might act as prodrugs of seleno-ganciclovir (4d)...
July 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28702476/regulatable-transgene-expression-for-prevention-of-chemotherapy-induced-peripheral-neuropathy
#13
Daisuke Kawata, Zetang Wu
Chemotherapy-induced peripheral neuropathy (CIPN) is a debilitating complication associated with drug treatment of cancer for which there are no effective strategies of prevention or treatment. In this study, we examined the effect of intermittent expression of neurotophin-3 (NT-3) or interleukin-10 (IL-10) from replication-defective herpes simplex virus (HSV)-based regulatable vectors delivered by subcutaneous inoculation to the dorsal root ganglion (DRG) on the development of paclitaxel-induced peripheral neuropathy...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28702475/deletion-of-the-virion-host-shut-off-gene-enhances-neuronal-selective-transgene-expression-from-an-hsv-vector-lacking-functional-ie-genes
#14
Yoshitaka Miyagawa, Gianluca Verlengia, Bonnie Reinhart, Fang Han, Hiroaki Uchida, Silvia Zucchini, William F Goins, Michele Simonato, Justus B Cohen, Joseph C Glorioso
The ability of herpes simplex virus (HSV) to establish lifelong latency in neurons suggests that HSV-derived vectors hold promise for gene delivery to the nervous system. However, vector toxicity and transgene silencing have created significant barriers to vector applications to the brain. Recently, we described a vector defective for all immediate-early gene expression and deleted for the joint region between the two unique genome segments that proved capable of extended transgene expression in non-neuronal cells...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28701403/monoclonal-antibodies-derived-from-humans-vaccinated-with-the-rv144-hiv-vaccine-containing-the-hvem-binding-domain-of-herpes-simplex-virus-hsv-glycoprotein-d-neutralize-hsv-infection-mediate-adcc-and-protect-mice-from-ocular-challenge-with-hsv-1
#15
Kening Wang, Georgia D Tomaras, Sinthujan Jegaskanda, M Anthony Moody, Hua-Xin Liao, Kyle Goodman, Phillip W Berman, Supachai Rerks-Ngarm, Punnee Pitisuttithum, Sorachai Nitayapan, Jaranit Kaewkungwal, Barton F Haynes, Jeffrey I Cohen
The RV144 HIV vaccine trial included a recombinant HIV glycoprotein 120 (gp120) construct fused to a small portion of herpes simplex virus (HSV-1) glycoprotein D (gD), such that the first 40 amino acids of gp120 were replaced by the signal sequence and the first 27 amino acids of the mature form of gD. This region of gD contains most of the binding site for HVEM, an HSV receptor important for virus infection of epithelial cells and lymphocytes. RV144 induced antibodies to HIV that were partially protective against infection as well as antibodies to HSV...
July 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28701399/selective-expression-of-ccr10-and-cxcr3-by-circulating-human-hsv-specific-cd8-t-cells
#16
Michael T Hensel, Tao Peng, Anqi Cheng, Stephen C De Rosa, Anna Wald, Kerry J Laing, Lichen Jing, Lichun Dong, Amalia S Magaret, David M Koelle
Herpes simplex virus type (HSV) infection is restricted to epithelial cells and neurons and is controlled by CD8 T-cells. These cells both traffic to epithelial sites of recurrent lytic infection and to ganglia, and persist at the dermal-epidermal junction for up to 12 weeks after lesion resolution. We previously showed that cutaneous lymphocyte-associated antigen (CLA), a functional E-selectin ligand (ESL), is selectively expressed on circulating HSV-2-specific CD8 T-cells. CLA/ESL mediates adhesion of T-cells to inflamed vascular endothelium...
July 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28700944/viral-activation-of-heparanase-drives-pathogenesis-of-herpes-simplex-virus-1
#17
Alex M Agelidis, Satvik R Hadigal, Dinesh Jaishankar, Deepak Shukla
Herpes simplex virus-1 (HSV-1) causes lifelong recurrent pathologies without a cure. How infection by HSV-1 triggers disease processes, especially in the immune-privileged avascular human cornea, remains a major unresolved puzzle. It has been speculated that a cornea-resident molecule must tip the balance in favor of pro-inflammatory and pro-angiogenic conditions observed with herpetic, as well as non-herpetic, ailments of the cornea. Here, we demonstrate that heparanase (HPSE), a host enzyme, is the molecular trigger for multiple pathologies associated with HSV-1 infection...
July 11, 2017: Cell Reports
https://www.readbyqxmd.com/read/28699403/rna-seq-investigations-of-human-post-mortem-trigeminal-ganglia
#18
Danielle M LaPaglia, Matthew R Sapio, Peter D Burbelo, Jean Thierry-Mieg, Danielle Thierry-Mieg, Stephen J Raithel, Christopher E Ramsden, Michael J Iadarola, Andrew J Mannes
Background The trigeminal ganglion contains neurons that relay sensations of pain, touch, pressure, and many other somatosensory modalities to the central nervous system. The ganglion is also a reservoir for latent herpes virus 1 infection. To gain a better understanding of molecular factors contributing to migraine and headache, transcriptome analyses were performed on postmortem human trigeminal ganglia. Methods RNA-Seq measurements of gene expression were conducted on small sub-regions of 16 human trigeminal ganglia...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28698721/is-herpes-simplex-virus-hsv-a-sign-of-encephalitis-in-iranian-newborns-prevalence-of-hsv-infection-in-pregnant-women-in-iran-a-systematic-review-and-meta-analysis
#19
REVIEW
Masoumeh Arabsalmani, Meysam Behzadifar, Hamid Reza Baradaranmd, Mansoureh Toghae, Gholam Beyranvand, Alireza Olyaeemanesh, Masoud Behzadifar
OBJECTIVE: Herpes Simplex virus (HSV) is one of the most common sexually transmitted diseases in the world. This study aimed to determine the prevalence of herpes simplex virus in pregnant women in Iran. MATERIALS & METHODS: A systematic literature review was conducted to study the HSV subtypes in Persian and English papers through several databases. We searched Pub Med, Scopus, Ovid, Science Direct and national databases as Magiran, Iranmedex and Science Information Database (SID) up to October 2015...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28698509/almond-skin-extracts-abrogate-hsv-1-replication-by-blocking-virus-binding-to-the-cell
#20
Carlo Bisignano, Giuseppina Mandalari, Antonella Smeriglio, Domenico Trombetta, Maria Musarra Pizzo, Rosamaria Pennisi, Maria Teresa Sciortino
The aim of the present research was to determine the effect of almond skin extracts on herpes simplex virus 1 (HSV-1) replication. Drug-resistant strains of HSV frequently develop following therapeutic treatment. Therefore, the discovery of novel anti-HSV drugs deserves great effort. Here, we tested both natural (NS) and blanched (BS) polyphenols-rich almond skin extracts against HSV-1. HPLC analysis showed that the prevalent compounds in NS and BS extracts contributing to their antioxidant activity were quercetin, epicatechin and catechin...
July 10, 2017: Viruses
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