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https://www.readbyqxmd.com/read/28783042/inborn-errors-in-rna-polymerase-iii-underlie-severe-varicella-zoster-virus-infections
#1
Benson Ogunjimi, Shen-Ying Zhang, Katrine B Sørensen, Kristian A Skipper, Madalina Carter-Timofte, Gaspard Kerner, Stefanie Luecke, Thaneas Prabakaran, Yujia Cai, Josephina Meester, Esther Bartholomeus, Nikhita Ajit Bolar, Geert Vandeweyer, Charlotte Claes, Yasmine Sillis, Lazaro Lorenzo, Raffaele A Fiorenza, Soraya Boucherit, Charlotte Dielman, Steven Heynderickx, George Elias, Andrea Kurotova, Ann Vander Auwera, Lieve Verstraete, Lieven Lagae, Helene Verhelst, Anna Jansen, Jose Ramet, Arvid Suls, Evelien Smits, Berten Ceulemans, Lut Van Laer, Genevieve Plat Wilson, Jonas Kreth, Capucine Picard, Horst Von Bernuth, Joël Fluss, Stephane Chabrier, Laurent Abel, Geert Mortier, Sebastien Fribourg, Jacob Giehm Mikkelsen, Jean-Laurent Casanova, Søren R Paludan, Trine H Mogensen
Varicella zoster virus (VZV) typically causes chickenpox upon primary infection. In rare cases, VZV can give rise to life-threatening disease in otherwise healthy people, but the immunological basis for this remains unexplained. We report 4 cases of acute severe VZV infection affecting the central nervous system or the lungs in unrelated, otherwise healthy children who are heterozygous for rare missense mutations in POLR3A (one patient), POLR3C (one patient), or both (two patients). POLR3A and POLR3C encode subunits of RNA polymerase III...
August 7, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28781838/acute-pancreatitis-in-immunocompromised-patients-beware-of-varicella-zoster-virus-primo-infection
#2
Adrien Picod, Elise Corre, Eric Maury, Paul Duriez, Nadia Hoyeau, Paul Coppo
Varicella zoster virus (VZV) primo-infection can be severe in the elderly and in immunocompromised patients. Atypical presentations are not uncommon and may mislead the diagnosis and delay adequate treatment. Valacyclovir prophylaxis should be systematically proposed in immunocompromised patients.
August 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28780657/combination-therapy-of-rituximab-and-mycophenolate-mofetil-in-childhood-lupus-nephritis
#3
Julien Hogan, Astrid Godron, Véronique Baudouin, Theresa Kwon, Jérôme Harambat, Georges Deschênes, Olivier Niel
BACKGROUND: In clinical trials, the addition of rituximab (RTX) to the combination therapeutic regimen of mycophenolate mofetil (MMF) and corticosteroids failed to improve outcome in lupus nephritis (LN). However, recent data suggest that RTX may have steroid-sparing beneficial effects with an efficacy similar to that of conventional regimens. We report our experience with RTX in the treatment of children with LN. METHODS: Patients treated with RTX for first occurrence of LN class III to V were enrolled in the study...
August 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28765144/comparing-optical-coherence-tomography-findings-in-different-aetiologies-of-infectious-necrotising-retinitis
#4
Alessandro Invernizzi, Aniruddha Kishandutt Agarwal, Vittoria Ravera, Chiara Mapelli, Agostino Riva, Giovanni Staurenghi, Peter J McCluskey, Francesco Viola
AIMS: To compare optical coherence tomography (OCT) features of active necrotising infectious retinitis (NIR) due to toxoplasmosis or herpesviruses and to determine distinctive OCT signs for these two causes of infectious retinitis. METHODS: OCT scans from eyes with active NIR due to varicella zoster virus (VZV), herpes simplex virus (HSV), cytomegalovirus (CMV), and toxoplasmosis (TOXO) were reviewed. All images were evaluated for the presence of previously described OCT findings in TOXO-NIR and compared with the viral group...
August 1, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28763115/design-synthesis-and-the-biological-evaluation-of-a-new-series-of-acyclic-1-2-3-triazole-nucleosides
#5
Iwona E Głowacka, Graciela Andrei, Dominique Schols, Robert Snoeck, Katarzyna Gawron
A new strategy for the synthesis of N(3) -benzoylated- and N(3) -benzylated N(1) -propargylquinazoline-2,4-diones 30a-d and 31a-d from isatoic anhydride 41 is reported. The alkynes 30a-d and 31a-d were applied in the 1,3-dipolar cycloadditions with azides 27 and 28 to synthesize acyclic 1,2,3-triazole nucleosides. The obtained alkynes and 1,2,3-triazole were evaluated for antiviral activity against a broad range of DNA and RNA viruses. The alkyne 30d showed activity against adenovirus-2 (EC50  = 8.3 μM), while compounds 37a and 37d were also active toward herpes simplex virus-1 wild-type and thymidine kinase deficient (HSV-1 TK(-) ) strains (EC50 values in the range of 4...
August 1, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/28758156/varicella-zoster-virus-and-large-vessel-vasculitis-the-absence-of-an-association
#6
Gary W Procop, Charis Eng, Alison Clifford, Alexandra Villa-Forte, Leonard H Calabrese, Eric Roselli, Lars Svensson, Douglas Johnston, Gosta Pettersson, Edward Soltesz, Lisa Lystad, Julian D Perry, Alexander Blandford, Deborah A Wilson, Gary S Hoffman
OBJECTIVE: It is controversial whether microorganisms play a role in the pathogenesis of large and medium vessel vasculitides (eg, giant cell arteritis [GCA], Takayasu arteritis [TAK] and focal idiopathic aortitis [FIA]). Recent studies have reported the presence of Varicella Zoster Virus (VZV) within formalin-fixed, paraffin-embedded temporal arteries and aortas of about three-quarters or more of patients with these conditions, and in a minority of controls. In a prospective study, we sought to confirm these findings using DNA extracted from vessels that were harvested under surgically aseptic conditions and snap frozen...
2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28757102/new-prodrugs-of-two-pyrimidine-acyclic-nucleoside-phosphonates-synthesis-and-antiviral-activity
#7
Marcela Krečmerová, Martin Dračínský, Robert Snoeck, Jan Balzarini, Karel Pomeisl, Graciela Andrei
New 2,4-diamino-6-[2-(phosphonomethoxy)ethoxy]pyrimidine (PMEO-DAPy) and 1-[2-(phosphonomethoxy)ethyl]-5-azacytosine (PME-5-azaC) prodrugs were prepared with a pro-moiety consisting of carbonyloxymethyl esters (POM, POC), alkoxyalkyl esters, amino acid phosphoramidates and/or tyrosine. The activity of the prodrugs was evaluated in vitro against different virus families. None of the synthesized prodrugs demonstrated activity against RNA viruses but some of them proved active against herpesviruses [including herpes simplex virus (HSV), varicella-zoster virus (VZV), and human cytomegalovirus (HCMV)]...
July 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28752294/characterization-and-phylogenetic-analysis-of-varicella-zoster-virus-strains-isolated-from-korean-patients
#8
Min Ho Kim, Jeong Seon Jeon, In Kyo Kim, Ji Seon Park, Hosun Park, Ok Sarah Shin, Chan Hee Lee
Varicella-zoster virus (VZV) is a causative agent of chickenpox in primary infection and shingles after its reactivation from latency. Complete or almost-complete genomic DNA sequences for various VZV strains have been reported. Recently, clinical VZV strains were isolated from Korean patients whose genome was sequenced using high-throughput sequencing technology. In this study, we analyzed single nucleotide polymorphism (SNP) of VZV strains to genetically characterize Korean clinical isolates. Phylogenetic analyses revealed that three Korean strains, YC01, YC02, and YC03, were linked to clade 2...
August 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28749391/variations-in-herpes-zoster-manifestation
#9
REVIEW
Uwe Wollina
Herpes zoster (HZ) is a neurocutaneous disorder due to endogenous reactivation of the varicella-zoster virus (VZV). The typical clinical manifestation is an acute segmental eruption of herpetiform umbilicated vesicles associated with malaise, pain, dysaesthesia, allodynia and probably fever. This review focuses on other possible clinical manifestations of the disease to sensitize physicians not to overlook HZ since only an early antiviral treatment can reduce the risk of post-zosteric neuralgia.
March 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28748773/differentiation-between-wild-type-and-vaccines-strains-of-varicella-zoster-virus-vzv-based-on-four-single-nucleotide-polymorphisms
#10
L Jin, S Xu, P A C Maple, W Xu, K E Brown
Varicella-zoster virus (VZV) infection (chickenpox) results in latency and subsequent reactivation manifests as shingles. Effective attenuated vaccines (vOka) are available for prevention of both illnesses. In this study, an amplicon-based sequencing method capable of differentiating between VZV wild-type (wt) strains and vOka vaccine is described. A total of 44 vesicular fluid specimens collected from 43 patients (16 from China and 27 from the UK) with either chickenpox or shingles were investigated, of which 10 had received previous vaccination...
September 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28747504/targeted-genome-sequencing-reveals-varicella-zoster-virus-open-reading-frame-12-deletion
#11
Randall J Cohrs, Katherine S Lee, Addilynn Beach, Bridget Sanford, Nicholas L Baird, Christina Como, Chiharu Graybill, Dallas Jones, Eden Tekeste, Mitchell Ballard, Xiaomi Chen, David Yalacki, Seth Frietze, Kenneth Jones, Tihana Lenac Rovis, Stipan Jonjić, Jürgen Haas, Don Gilden
The neurotropic herpesvirus varicella zoster virus (VZV) establishes a life-long latent infection in humans following primary infection. The low abundance of VZV nucleic acids in human neurons has hindered an understanding of the mechanisms that regulate viral gene transcription during latency. To overcome this critical barrier, we optimized a targeted capture protocol to enrich VZV DNA and cDNA prior to whole-genome/transcriptome sequence analysis. Since the VZV genome is remarkably stable, it was surprising to detect that VZV32, a VZV laboratory strain with no discernable growth defect in tissue culture, contained a 2158-bp deletion in open reading frame (ORF) 12...
July 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28734654/schlafen-14-slfn14-is-a-novel-antiviral-factor-involved-in-the-control-of-viral-replication
#12
Rak-Kyun Seong, Seong-Wook Seo, Ji-Ae Kim, Sarah J Fletcher, Neil V Morgan, Mukesh Kumar, Young-Ki Choi, Ok Sarah Shin
Schlafen (SLFN) proteins have been suggested to play important functions in cell proliferation and immune cell development. In this study, we determined the antiviral activities of putative RNA-helicase domain-containing SLFN14. Murine SLFN14 expression was specifically induced by TLR3-mediated pathways and type I interferon (IFN) in RAW264.7 mouse macrophages. To examine the role of SLFN during viral infection, cells were infected with either wild-type PR8 or delNS1/PR8 virus. SLFN14 expression was specifically induced following influenza virus infection...
July 11, 2017: Immunobiology
https://www.readbyqxmd.com/read/28725563/atypical-hemolytic-uremic-syndrome-triggered-by-varicella-infection
#13
Pauline Condom, Jean-Michel Mansuy, Stéphane Decramer, Jacques Izopet, Catherine Mengelle
Varicella Zoster Virus (VZV) is a well-known virus that belongs to the Herpesviridae family which induces a self-limited disease except in specific cases in particular among stem cell transplant patients. This virus is not known however to trigger atypical Hemolytic Uremic Syndrome (aHUS). Here we report the case of a six-year-old boy who was hospitalized with fever and abdominal pains associated to pruritic and vesicular rash, thrombocytopenia and acute renal failure. He was diagnosed with aHUS precipitated by varicella virus...
2017: IDCases
https://www.readbyqxmd.com/read/28705150/economic-burden-of-varicella-in-children-1-12%C3%A2-years-of-age-in-hungary-2011-2015
#14
Z Meszner, Z Molnar, E Rampakakis, H K Yang, B J Kuter, Lara J Wolfson
BACKGROUND: Although live-attenuated varicella-zoster virus (VZV) vaccines have been proven to be safe and effective in preventing varicella and real-word evidence shows routine childhood immunization programs are effective in dramatically reducing varicella associated morbidity and mortality, varicella vaccine is not included in the National Immunization Program (NIP) in Hungary. The purpose of this study was to evaluate the clinical and economic burden associated with varicella in Hungary...
July 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28698046/simian-varicella-virus-causes-robust-transcriptional-changes-in-t-cells-that-support-viral-replication
#15
Nicole Arnold, Ilhem Messaoudi
Varicella zoster virus (VZV) causes varicella (chickenpox) during acute infection. Several studies have shown that T cells are early and preferential targets of VZV infection that play a critical role in disseminating VZV in to the skin and ganglia. However, the transcriptional changes that occur in VZV-infected T cells remain unclear due to limited access to clinical samples and robust translational animal models. In this study, we used a nonhuman primate model of VZV infection where rhesus macaques are infected with the closely related Simian Varicella Virus (SVV) to provide novel insights into VZV-T cell interactions...
July 8, 2017: Virus Research
https://www.readbyqxmd.com/read/28684923/bilateral-herpes-zoster-in-a-patient-with-end-stage-kidney-disease
#16
Tetsu Akimoto, Shigeaki Muto, Daisuke Nagata
Herpes zoster (HZ) is caused by the reactivation of a latent varicella-zoster virus (VZV) infection within the cranial or dorsal root ganglia. The cutaneous lesions of HZ are typically limited to a single dermatome, while non-contiguous HZ involving two or more dermatomes is a very rare clinical entity. In this report, we describe a case of HZ involving the left and right side of the abdomen corresponding to the T11 dermatome in a 63-year-old man on chronic peritoneal dialysis. The characteristic cutaneous manifestation encouraged us to ascribe the disease to HZ duplex bilateralis, and the patient was given a single dose of oral valacyclovir and achieved a favorable outcome...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28682067/expanding-the-antiviral-spectrum-of-3-fluoro-2-phosphonomethoxy-propyl-acyclic-nucleoside-phosphonates-diamyl-aspartate-amidate-prodrugs
#17
Min Luo, Elisabetta Groaz, Graciela Andrei, Robert Snoeck, Raj Kalkeri, Roger G Ptak, Tracy Hartman, Robert W Buckheit, Dominique Schols, Steven De Jonghe, Piet Herdewijn
Acyclic nucleosides containing a 3-fluoro-2-(phosphonomethoxy)propyl (FPMP) side chain are known to be moderately potent antihuman immunodeficiency virus (HIV) agents, while being completely devoid of antiviral activity against a wide range of DNA viruses. The derivatization of the phosphonic acid functionality of FPMPs with a diamyl aspartate phenoxyamidate group led to a novel generation of compounds that not only demonstrate drastically improved antiretroviral potency but also are characterized by an expanded spectrum of activity that also covers hepatitis B and herpes viruses...
July 27, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28681577/tuberculous-meningitis-mimicking-varicella-zoster-meningitis
#18
Sun In Hong, Taeeun Kim, Jiwon Jung, Se Yoon Park, Yong Pil Chong, Sang Oh Lee, Sang Ho Choi, Yang Soo Kim, Jun Hee Woo, Sang Ahm Lee, Sung Han Kim
BACKGROUND: Varicella-zoster virus (VZV) is one of the most common etiologies of aseptic meningitis. The severest manifestation of VZV meningitis is occasionally confused with tuberculous meningitis (TBM). Thus, we investigated the clinical manifestations of VZV meningitis as compared with those of TBM. MATERIALS AND METHODS: All adult patients who were diagnosed with VZV meningitis or TBM were enrolled at a tertiary hospital in Seoul, South Korea, during an 8-year period...
June 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28670753/human-varicella-zoster-virus-is-not-present-in-the-semen-of-a-man-affected-by-chickenpox-during-the-in-vitro-fertilisation-of-his-wife
#19
D Y L Chan, K K W Lam, E Y L Lau, W S B Yeung, E H Y Ng
Human varicella zoster virus (VZV) is a member of the herpes virus family and affects humans only. Information about the presence of the virus in the semen samples of men affected by chickenpox is rather limited in the literature. Here, we reported a husband was affected by VZV during in vitro fertilisation treatment of his wife treated in our centre. The semen sample was checked for the presence of VZV by the PCR technique. The PCR result found no detectable viral DNA in the semen sample. The semen sample was then used for conventional IVF insemination and subsequently a healthy baby boy was born...
July 3, 2017: Andrologia
https://www.readbyqxmd.com/read/28668556/1-2-3-4-6-penta-o-galloyl-%C3%A3-d-glucose-a-bioactive-compound-in-elaeocarpus-sylvestris-extract-inhibits-varicella-zoster-virus-replication
#20
Sohee Bae, Sun Yeou Kim, Moon Ho Do, Chan Hee Lee, Yoon-Jae Song
The aim of this study was to establish the effect of a 70% ethanol extract of Elaeocarpus sylvestris (ESE) on varicella-zoster virus (VZV) replication and identify the specific bioactive component(s) underlying its activity. ESE induced a significant reduction in replication of the clinical strain of VZV. Activity-guided fractionation indicated that the ethyl acetate (EtOAc) fraction of ESE contains the active compound(s) inhibiting VZV replication. High-Performance Liquid Chromatography coupled to Electrospray Ionization Quadrupole Time-of-Flight Mass Spectrometry (HPLC-Q-TOF-MS/MS) analysis of the EtOAc fraction of ESE facilitated the identification of 13 chemical components...
June 29, 2017: Antiviral Research
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