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Herpes Simplex Virus

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https://www.readbyqxmd.com/read/28820568/enhanced-drug-delivery-into-cell-cytosol-via-glycoprotein-h-derived-peptide-conjugated-nanoemulsions
#1
Teresa Fotticchia, Raffaele Vecchione, Pasqualina Liana Scognamiglio, Daniela Guarnieri, Vincenzo Calcagno, Concetta Di Natale, Chiara Attanasio, Maria De Gregorio, Chiara Di Cicco, Vincenzo Quagliariello, Nicola Maurea, Antonio Barbieri, Luca Raiola, Rosario Vincenzo Iaffaioli, Paolo Antonio Netti
The key role of nanocarriers in improving the pharmacological properties of commonly used drugs is recognized worldwide. It is also known that in the development of new effective nanocarriers the use of targeting moieties integrated on their surface is essential. Herein, we propose a nanocarrier based on an oil in water nanoemulsion coated with a membranotropic peptide derived from the glycoprotein H of Herpes simplex virus 1, known as gH625, in order to reduce endo-lysosomal accumulation and to enhance cytosolic localization...
August 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28817197/estimating-seroprevalence-of-herpes-simplex-virus-type-1-among-different-middle-east-and-north-african-male-populations-residing-in-qatar
#2
Gheyath K Nasrallah, Soha R Dargham, Layla I Mohammed, Laith J Abu-Raddad
BACKGROUND: HSV-1 epidemiology in the Middle East and North Africa (MENA) remains poorly understood. Our study aimed to measure HSV-1 antibody prevalence (seroprevalence) and its age-distribution among select MENA populations residing in Qatar. METHODS: Sera were collected from male blood donors attending Hamad Medical Corporation 2013-2015. A total of 2,077 sera were tested for anti-HSV-1 antibodies using HerpeSelect® 1 ELISA IgG kits (Focus Diagnostics, USA)...
August 17, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28814886/a-practical-guide-to-the-handling-and-administration-of-talimogene-laherparepvec-in-europe
#3
REVIEW
Kevin J Harrington, Olivier Michielin, Josep Malvehy, Isabella Pezzani Grüter, Lorna Grove, Anna Lisa Frauchiger, Reinhard Dummer
Talimogene laherparepvec is a herpes simplex virus-1-based intralesional oncolytic immunotherapy and is the first oncolytic virus to be approved in Europe. It is indicated for the treatment of adults with unresectable melanoma that is regionally or distantly metastatic (stage IIIB, IIIC, and IVM1a) with no bone, brain, lung, or other visceral disease. Talimogene laherparepvec is a genetically modified viral therapy, and its handling needs special attention due to its deep freeze, cold-chain requirements, its potential for viral shedding, and its administration by direct intralesional injection...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28814240/structure-properties-and-mechanisms-of-action-of-naturally-originated-phenolic-acids-and-their-derivatives-against-human-viral-infections
#4
Yi-Hang Wu, Bing-Yi Zhang, Li-Peng Qiu, Rong-Fa Guan, Zi-Hong Ye, Xiao-Ping Yu
BACKGROUND: A great effort has been made to develop efficacious antiviral drugs, but many viral infections are still lack of efficient antiviral therapies so far. The related exploration of natural products to fight viruses has been raised in recent years. Natural compounds with structural diversity and complexity offer a great chance to find new antiviral agents. Particularly, phenolic acids have attracted considerable attention owing to their potent antiviral abilities and unique mechanisms...
August 14, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28812996/reliable-detection-of-herpes-simplex-virus-sequence-variation-by-high-throughput-resequencing
#5
Alison M Morse, Kaitlyn R Calabro, Justin M Fear, David C Bloom, Lauren M McIntyre
High-throughput sequencing (HTS) has resulted in data for a number of herpes simplex virus (HSV) laboratory strains and clinical isolates. The knowledge of these sequences has been critical for investigating viral pathogenicity. However, the assembly of complete herpesviral genomes, including HSV, is complicated due to the existence of large repeat regions and arrays of smaller reiterated sequences that are commonly found in these genomes. In addition, the inherent genetic variation in populations of isolates for viruses and other microorganisms presents an additional challenge to many existing HTS sequence assembly pipelines...
August 16, 2017: Viruses
https://www.readbyqxmd.com/read/28811345/inhibitors-of-the-histone-methyltransferases-ezh2-1-induce-a-potent-antiviral-state-and-suppress-infection-by-diverse-viral-pathogens
#6
Jesse H Arbuckle, Paul J Gardina, David N Gordon, Heather D Hickman, Jonathan W Yewdell, Theodore C Pierson, Timothy G Myers, Thomas M Kristie
Epigenetic regulation is based on a network of complexes that modulate the chromatin character and structure of the genome to impact gene expression, cell fate, and development. Thus, epigenetic modulators represent novel therapeutic targets used to treat a range of diseases, including malignancies. Infectious pathogens such as herpesviruses are also regulated by cellular epigenetic machinery, and epigenetic therapeutics represent a novel approach used to control infection, persistence, and the resulting recurrent disease...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28810147/macrophage-polarization-contributes-to-glioblastoma-eradication-by-combination-immunovirotherapy-and-immune-checkpoint-blockade
#7
Dipongkor Saha, Robert L Martuza, Samuel D Rabkin
Glioblastoma is an immunosuppressive, fatal brain cancer that contains glioblastoma stem-like cells (GSCs). Oncolytic herpes simplex virus (oHSV) selectively replicates in cancer cells while inducing anti-tumor immunity. oHSV G47Δ expressing murine IL-12 (G47Δ-mIL12), antibodies to immune checkpoints (CTLA-4, PD-1, PD-L1), or dual combinations modestly extended survival of a mouse glioma model. However, the triple combination of anti-CTLA-4, anti-PD-1, and G47Δ-mIL12 cured most mice in two glioma models...
August 14, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28809154/interaction-between-herpesvirus-entry-mediator-and-hsv-2-glycoproteins-mediates-hiv-1-entry-of-hsv-2-infected-epithelial-cells
#8
Kai Hu, Siyi He, Juhua Xiao, Mei Li, Sukun Luo, Mudan Zhang, Qinxue Hu
Herpes simplex virus type 2 (HSV-2) increases human immunodeficiency virus type 1 (HIV-1) acquisition and transmission via unclear mechanisms. Herpesvirus entry mediator (HVEM), an HSV-2 entry receptor, is highly expressed on HIV-1 target cells (CD4+ T cells) and may be incorporated into HIV-1 virions, while HSV-2 glycoproteins can be present on the infected cell surface. Since HVEM-gD interaction together with gB/gH/gL is essential for HSV-2 entry, HVEM-bearing HIV-1 (HIV-1/HVEM) may enter HSV-2-infected cells through such interactions...
August 15, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28808974/isolation-purification-and-culture-of-primary-murine-sensory-neurons
#9
Sarah Katzenell, Jorge R Cabrera, Brian J North, David A Leib
Cultured primary neurons have been of extraordinary value for the study of neuronal anatomy, cell biology, and physiology. While use of neuronal cell lines has ease and utility, there are often caveats that arise due to their mitotic nature. This methods article presents detailed methodology for the preparation, purification, and culture of adult murine sensory neurons for the study of herpes simplex virus lytic and latent infections. While virology is the application for our laboratory, these cultures also have broad utility for neurobiologists and cell biologists...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28807852/extracts-of-equisetum-giganteum-l-and-copaifera-reticulate-ducke-show-strong-antiviral-activity-against-the-sexually-transmitted-pathogen-herpes-simplex-virus-type-2
#10
Marianela Patzi Churqui, Liza Lind, Karolina Thörn, Alexandra Svensson, Otto Savolainen, Katty Terrazas Aranda, Kristina Eriksson
ETHNOPHARMACOLOGICAL RELEVANCE: Equisetum giganteum L and Copaifera reticulate Ducke have been traditionally used by women of the Tacana tribe in the Bolivian Amazonas for genital hygiene and for treatment of genital infection/inflammation. AIM OF THE STUDY: To assess the ability of extracts from Equisetum giganteum L and Copaifera reticulate Ducke to block genital viral infection by herpes simplex virus type 2. MATERIALS AND METHODS: Equisetum giganteum L and Copaifera reticulate Ducke were collected from the Amazon region of La Paz, Bolivia...
August 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28806629/aseptic-meningitis-in-adults-and-children-diagnostic-and-management-challenges
#11
Bhavarth Shukla, Elizabeth A Aguilera, Lucrecia Salazar, Susan H Wootton, Quanhathai Kaewpoowat, Rodrigo Hasbun
BACKGROUND: Aseptic meningitis represents a common diagnostic and management dilemma to clinicians. OBJECTIVES: To compare the clinical epidemiology, diagnostic evaluations, management, and outcomes between adults and children with aseptic meningitis. STUDY DESIGN: We conducted a retrospective study from January 2005 through September 2010 at 9 Memorial Hermann Hospitals in Houston, TX. Patients age≥2months who presented with community-acquired aseptic meningitis with a CSF white blood cell count >5cells/mm(3) and a negative Gram stain and cultures were enrolled...
August 4, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28803228/utility-of-routine-urine-cmv-pcr-and-total-serum-igm-testing-of-small-for-gestational-age-infants-a-single-center-review
#12
Michael M Espiritu, Sean Bailey, Elena V Wachtel, Pradeep V Mally
BACKGROUND: Due to the extremely low incidence of TORCH (toxoplasmosis, rubella, CMV, herpes simplex virus) infections, diagnostic testing of all small for gestational age (SGA) infants aimed at TORCH etiologies may incur unnecessary tests and cost. OBJECTIVE: To determine the frequency of urine CMV PCR and total IgM testing among infants with birth weight <10% and the rate of test positivity. To evaluate the frequency of alternative etiologies of SGA in tested infants...
August 14, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28801914/blockade-of-transforming-growth-factor-%C3%AE-signaling-enhances-oncolytic-herpes-simplex-virus-efficacy-in-patient-derived-recurrent-glioblastoma-models
#13
Shinichi Esaki, Fares Nigim, Esther Moon, Samantha Luk, Juri Kiyokawa, William Curry, Daniel P Cahill, Andrew S Chi, A John Iafrate, Robert L Martuza, Samuel D Rabkin, Hiroaki Wakimoto
Despite the current standard of multimodal management, glioblastoma (GBM) inevitably recurs and effective therapy is not available for recurrent disease. A subset of tumor cells with stem-like properties, termed GBM stem-like cells (GSCs), are considered to play a role in tumor relapse. Although oncolytic herpes simplex virus (oHSV) is a promising therapeutic for GBM, its efficacy against recurrent GBM is incompletely characterized. Transforming growth factor beta (TGF-β) plays vital roles in maintaining GSC stemness and GBM pathogenesis...
August 12, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28801631/rhodoterpenoids-a%C3%A2-c-three-new-rearranged-triterpenoids-from-rhododendron-latoucheae-by-hplc%C3%A2-ms%C3%A2-spe%C3%A2-nmr
#14
Fei Liu, Ya-Nan Wang, Yong Li, Shuang-Gang Ma, Jing Qu, Yun-Bao Liu, Chang-Shan Niu, Zhong-Hai Tang, Tian-Tai Zhang, Yu-Huan Li, Li Li, Shi-Shan Yu
Rhodoterpenoids A‒C (1‒3), three new rearranged triterpenoids, together with one new biogenetically related compound, rhodoterpenoid D (4), were isolated and efficiently elucidated from Rhododendron latoucheae by high-performance liquid chromatography-mass spectrometry-solid-phase extraction-nuclear magnetic resonance (HPLC‒MS‒SPE‒NMR). Compounds 1 and 2 possess an unprecedented skeleton with a 5/7/6/6/6-fused pentacyclic ring system, while compound 3 contains a unique 6/7/6/6/6-fused pentacyclic carbon backbone...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28799270/non-activated-titanium-dioxide-nanoparticles-promote-the-growth-of-chlamydia-trachomatis-and-decrease-the-antimicrobial-activity-of-silver-nanoparticles
#15
Anita Bogdanov, László Janovák, Ildikó Lantos, Valéria Endrész, Dániel Sebők, Tamás Szabó, Imre Dékány, Judit Deák, Zsolt Rázga, Katalin Burián, Dezső P Virok
AIMS: Chlamydia trachomatis and herpes simplex virus are the most prevalent bacterial and viral sexually transmitted infections. Due to the chronic nature of their infections, they are able to interact with titanium-dioxide nanoparticles applied as food additives or drug delivery vehicles. The aim of our study was to describe the interactions of these two prevalent pathogens with the titanium-dioxide nanoparticles. METHODS AND RESULTS: Chlamydia trachomatis and herpes simplex virus-2 were treated with non-activated titanium-dioxide nanoparticles, silver nanoparticles and silver decorated titanium-dioxide nanoparticles before infection of HeLa and Vero cells...
August 11, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28798098/erratum-for-duraine-et-al-herpes-simplex-virus-ge-gi-and-us9-promote-both-envelopment-and-sorting-of-virus-particles-in-the-cytoplasm-of-neurons-two-processes-that-precede-anterograde-transport-in-axons
#16
Grayson DuRaine, Todd W Wisner, Paul Howard, Melissa Williams, David C Johnson
No abstract text is available yet for this article.
September 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28797967/multipurpose-tenofovir-disoproxil-fumarate-electrospun-fibers-for-the-prevention-of-hiv-1-and-hsv-2-infections-in-vitro
#17
Kevin M Tyo, Hung R Vuong, Danial A Malik, Lee B Sims, Houda Alatassi, Jinghua Duan, Walter H Watson, Jill M Steinbach-Rankins
Sexually transmitted infections affect hundreds of millions of people worldwide. Both human immunodeficiency virus (HIV-1 and -2) and herpes simplex virus-2 (HSV-2) remain incurable, urging the development of new prevention strategies. While current prophylactic technologies are dependent on strict user adherence to achieve efficacy, there is a dearth of delivery vehicles that provide discreet and convenient administration, combined with prolonged-delivery of active agents. To address these needs, we created electrospun fibers (EFs) comprised of FDA-approved polymers, poly(lactic-co-glycolic acid) (PLGA) and poly(DL-lactide-co-ε-caprolactone) (PLCL), to provide sustained-release and in vitro protection against HIV-1 and HSV-2...
August 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28796556/systemic-virotherapy-for-multiple-myeloma
#18
Stefania Oliva, Manuela Gambella, Mario Boccadoro, Sara Bringhen
The multiple myeloma (MM) treatment scenario has changed considerably over the past few years. Several novel targeted therapies are currently under consideration including oncolytic virotherapy. Areas covered: This review provides an analysis of the mechanisms of action of virotherapy, and summarizes the preclinical and clinical studies of systemic virotherapy developed for the treatment of MM. Different types of viruses have been identified, including: adenovirus, vaccinia virus, herpes simplex virus 1, myxoma virus, reovirus, measles virus, vesicular stomatitis virus and coxsackievirus A21...
August 10, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28794045/pseudorabies-virus-dutpase-ul50-induces-lysosomal-degradation-of-type-i-interferon-receptor-1-and-antagonizes-the-alpha-interferon-response
#19
Rui Zhang, Aotian Xu, Chao Qin, Qiong Zhang, Shifan Chen, Yue Lang, Mengdong Wang, Chuang Li, Wenhai Feng, Rui Zhang, Zhengfan Jiang, Jun Tang
Alphaherpesviruses that establish persistent infection partly rely on their ability to evade host anti-viral responses, notably, the type I interferon (IFN) response. However, the mechanisms employed by alphaherpesviruses to avoid this response are not well understood. Pseudorabies virus (PRV) is an economically important pathogen and a useful model system to study alphaherpesvirus biology. To identify PRV proteins that antagonize type I IFN signaling, we performed a screen using an IFN-stimulated response element reporter in the swine cell line CRL...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28794039/the-ul21-tegument-protein-of-herpes-simplex-virus-type-1-is-differentially-required-for-the-syncytial-phenotype
#20
Akua Sarfo, Jason Starkey, Erica Mellinger, Dan Zhang, Pooja Chadha, Jillian Carmichael, John W Wills
The initial goal of this study was to re-examine the requirement of UL21 for herpes simplex virus 1 (HSV-1) replication. Previous studies suggested that UL21 is dispensable for replication in cell cultures, but a recent report on HSV-2 challenges those findings. As was done for the HSV-2 study, a UL21-null virus was made and propagated on complementing cells to discourage selection of compensating mutations. This HSV-1 mutant was able to replicate in non-complementing cells, even at a low MOI, though a reduction in titer was observed...
August 9, 2017: Journal of Virology
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