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Ganciclovir

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https://www.readbyqxmd.com/read/28426277/topical-ganciclovir-in-cytomegalovirus-anterior-uveitis
#1
Joelle Antoun, François Willermain, Dorine Makhoul, Elie Motulsky, Laure Caspers, Lia Judice Relvas
PURPOSE: To study the effects of topical ganciclovir 0.15% gel on cytomegalovirus (CMV) anterior uveitis in a tertiary uveitis referral center in Brussels, Belgium. METHODS: A retrospective study of patients with a clinical diagnosis of CMV anterior uveitis/endotheliitis demonstrated by a positive polymerase chain reaction and/or Goldmann-Witmer coefficient (GWc). RESULTS: We report a series of 15 patients presenting clinical characteristics of CMV anterior uveitis...
April 20, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28422294/antiviral-activity-of-exopolysaccharides-from-arthrospira-platensis-against-koi-herpesvirus
#2
M Reichert, S M Bergmann, J Hwang, R Buchholz, C Lindenberger
Although koi herpesvirus (KHV) has a history of causing severe economic losses in common carp and koi farms, there are still no treatments available on the market. Thus, the aim of this study was to test exopolysaccharides (EPS) for its antiviral activity against KHV, by monitoring inhibition and cytotoxic effects in common carp brain cells. These substances can be easily extracted from extracellular algae supernatant and were identified as groups of sulphated polysaccharides. In order to reach this aim, Arthrospira platensis, which is well known for its antiviral activity of intra- and extracellular compounds towards mammalian herpesviruses, was investigated as standard organism and compared to commercial antiviral drug, ganciclovir, which inhibits the viral DNA polymerization...
April 19, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28420570/herpesviradae-infections-in-severely-burned-children
#3
Paul Wurzer, Megan R Cole, Robert P Clayton, Gabriel Hundeshagen, Omar Nunez Lopez, Janos Cambiaso-Daniel, Raimund Winter, Ludwik K Branski, Hal K Hawkins, Celeste C Finnerty, David N Herndon, Jong O Lee
OBJECTIVE: Burn-related immunosuppression can promote human herpesviridae infections. However, the effect of these infections on morbidity and mortality after pediatric burn injuries is unclear. METHODS: We retrospectively analyzed pediatric patients with burns ≥10% of the total body surface area (TBSA) who were admitted between 2010 and 2015. On clinical suspicion of a viral infection, antiviral therapy was initiated. Viral infection was confirmed via Tzanck smear, viral culture, and/or PCR...
April 15, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28415677/selective-elimination-of-long-interspersed-element-1-expressing-tumour-cells-by-targeted-expression-of-the-hsv-tk-suicide-gene
#4
Mariam Chendeb, Robert Schneider, Irwin Davidson, Anas Fadloun
In gene therapy, effective and selective suicide gene expression is crucial. We exploited the endogenous Long INterspersed Element-1 (L1) machinery often reactivated in human cancers to integrate the Herpes Simplex Virus Thymidine Kinase (HSV-TK) suicide gene selectively into the genome of cancer cells. We developed a plasmid-based system directing HSV-TK expression only when reverse transcribed and integrated in the host genome via the endogenous L1 ORF1/2 proteins and an Alu element. Delivery of these new constructs into cells followed by Ganciclovir (GCV) treatment selectively induced mortality of L1 ORF1/2 protein expressing cancer cells, but had no effect on primary cells that do not express L1 ORF1/2...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28408200/angiogenesis-targeting-microbubbles-combined-with-ultrasound-mediated-gene-therapy-in-brain-tumors
#5
En-Ling Chang, Chien-Yu Ting, Po-Hong Hsu, Yu-Chun Lin, En-Chi Liao, Chiung-Yin Huang, Yuan-Chih Chang, Hong-Lin Chan, Chi-Shiun Chiang, Hao-Li Liu, Kuo-Chen Wei, Ching-Hsiang Fan, Chih-Kuang Yeh
The major challenges in gene therapy for brain cancer are poor transgene expression due to the blood-brain barrier (BBB) and neurologic damage caused by conventional intracerebral injection. Non-viral gene delivery using ultrasound-targeted microbubble (MB) oscillation via the systematic transvascular route is attractive, but there is currently no high-yielding and targeted gene expression method. In this study, we developed a non-viral and angiogenesis-targeting gene delivery approach for efficient brain tumor gene therapy without brain damage...
April 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28407276/synthesis-characterization-and-biological-evaluation-of-some-novel-quinoxaline-derivatives-as-antiviral-agents
#6
Heba S A El-Zahabi
Ethyl (6,7-dimethyl-2-oxo-3,4-dihydroquinoxalin-3-yl)acetate and ethyl (6-methyl-2-oxo-3,4-dihydroquinoxalin-3-yl)acetate (1a,b), 3-methylquinoxalin-2(1H)-one (4) and 1,4-dihydroquinoxaline-2,3-dione (11) were the starting precursors for nine novel quinoxaline compounds, 3a, 6, 10, 13, 15, 16, 17, 18, and 20, via adopting different nucleophilic reactions. The synthesized compounds were tested for their antiviral activity against HCV, HBV, HSV-1, and HCMV. Concomitantly, their safety profile was investigated as well as their selectivity against the viral strains...
April 13, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/28406982/novel-decay-dynamics-revealed-for-virus-mediated-drug-activation-in-cytomegalovirus-infection
#7
Jessica Rose, Vincent C Emery, Deepali Kumar, Anders Asberg, Anders Hartmann, Alan G Jardine, Angelo A Bignamini, Atul Humar, Avidan U Neumann
Human cytomegalovirus (CMV) infection is a substantial cause of morbidity and mortality in immunocompromised hosts and globally is one of the most important congenital infections. The nucleoside analogue ganciclovir (GCV), which requires initial phosphorylation by the viral UL97 kinase, is the mainstay for treatment. To date, CMV decay kinetics during GCV therapy have not been extensively investigated and its clinical implications not fully appreciated. We measured CMV DNA levels in the blood of 92 solid organ transplant recipients with CMV disease over the initial 21 days of ganciclovir therapy and identified four distinct decay patterns, including a new pattern exhibiting a transient viral rebound (Hump) following initial decline...
April 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28401157/engineering-of-systematic-elimination-of-a-targeted-chromosome-in-human-cells
#8
Hiroshi Sato, Hiroki Kato, Haruyoshi Yamaza, Keiji Masuda, Huong Thi Nguyen Nguyen, Thanh Thi Mai Pham, Xu Han, Yuta Hirofuji, Kazuaki Nonaka
Embryonic trisomy leads to abortion or congenital genetic disorders in humans. The most common autosomal chromosome abnormalities are trisomy of chromosomes 13, 18, and 21. Although alteration of gene dosage is thought to contribute to disorders caused by extra copies of chromosomes, genes associated with specific disease phenotypes remain unclear. To generate a normal cell from a trisomic cell as a means of etiological analysis or candidate therapy for trisomy syndromes, we developed a system to eliminate a targeted chromosome from human cells...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28400201/inhibitors-of-dual-specificity-tyrosine-phosphorylation-regulated-kinases-dyrk-exert-a-strong-anti-herpesviral-activity
#9
Corina Hutterer, Jens Milbradt, Stuart Hamilton, Mirko Zaja, Johann Leban, Christophe Henry, Daniel Vitt, Mirjam Steingruber, Eric Sonntag, Isabel Zeitträger, Hanife Bahsi, Thomas Stamminger, William Rawlinson, Stefan Strobl, Manfred Marschall
Infection with human cytomegalovirus (HCMV) is a serious medical problem, particularly in immunocompromised individuals and neonates. The success of (val)ganciclovir therapy is hampered by low drug compatibility and induction of viral resistance. A novel strategy of antiviral treatment is based on the exploitation of cell-directed signaling, e. g. pathways with a known relevance for carcinogenesis and tumor drug development. Here we describe a principle for putative antiviral drugs based on targeting dual-specificity tyrosine phosphorylation-regulated kinases (DYRKs)...
April 8, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28395563/persistent-intestinal-bleeding-due-to-severe-cmv-related-thrombocytopenia-in-a-preterm-newborn
#10
Alberto Berardi, Eugenio Spaggiari, Chiara Cattelani, Maria Federica Roversi, Monica Pecorari, Tiziana Lazzarotto, Fabrizio Ferrari
The optimal threshold for neonatal platelet transfusions in sick newborns is still uncertain. We report a congenital cytomegalovirus (CMV) infection in a premature neonate with severe thrombocytopenia who subsequently presented with necrotizing enterocolitis and intestinal bleeding. The baby recovered after platelet transfusions were discontinued and the therapy was switched from intravenous ganciclovir to oral valganciclovir. We discuss both measures, speculating on the key role of platelet transfusions.
April 11, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28393663/herpes-simplex-virus-cytomegalovirus-and-pneumocystis-jiroveci-pneumonia-in-a-treatment-naive-hiv-positive-patient-with-pulmonary-alveolar-proteinosis-case-report
#11
Anita Bapat, Eliahu Bishburg, Sandhya Nagarakanti
Infection with multiple pathogens concurrently has become less common since the introduction of potent antiretroviral agent and effective prophylactic agents. We describe a patient with pulmonary alveolar proteinosis (PAP) admitted with pneumonia who was found to have AIDS and diagnosed with Pneumocystis jiroveci pneumonia, human herpesvirus type 1 (HHV-1), and a concomitant cytomegalovirus viremia. Polymerase chain reaction viral load was used for diagnosis of HHV-1 and follow-up. The patient was treated with trimethoprim-sulfamethoxazole and ganciclovir and had a resolution of pneumonia...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28389165/cytomegalovirus-retinitis-followed-by-immune-recovery-uveitis-in-an-elderly-patient-with-rheumatoid-arthritis-undergoing-administration-of-methotrexate-and-tofacitinib-combination-therapy
#12
Kunio Yanagisawa, Yoshiyuki Ogawa, Mayumi Hosogai, Daisuke Todokoro, Takeki Mitsui, Akihiko Yokohama, Shoji Kishi, Hiroshi Handa
Cytomegalovirus (CMV) retinitis is an opportunistic ocular infection most commonly observed in patients infected with human immunodeficiency virus (HIV). We present a rare case of CMV retinitis that developed in a non-HIV patient with rheumatoid arthritis (RA). Over the preceding 5 months, a family doctor had been treating the 78-year-old male patient with a combination therapy of methotrexate (MTX) and tofacitinib (TOF). CMV retinitis occurred when the patient's CD4+ T cells were low (196 cells/μl), and preceded the onset of Pneumocystis pneumonia...
April 4, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28383392/valganciclovir-dosing-for-cytomegalovirus-prophylaxis-in-pediatric-solid-organ-transplant-recipients-a-prospective-pharmacokinetic-study
#13
Orit Peled, Matitiahu Berkovitch, Eran Rom, Efraim Bilavsky, Yael Bernfeld, Lev Dorfman, Adi Pappo, Tomer Ziv-Baran, Nurit Brandriss, Adina Bar-Haim, Jacob Amir, Liat Ashkenazi-Hoffnung
BACKGROUND: Valganciclovir is extensively used for prophylaxis and treatment of CMV infection in solid-organ transplant recipients. However, pharmacokinetic data in children are scarce, and the pediatric dosing regimen is uncertain. This study sought to prospectively evaluate the pharmacokinetic profile, the clinical efficacy and safety of oral valganciclovir in pediatric transplant recipients and compare different dosing regimens. METHODS: The cohort included solid-organ transplant recipients treated with valganciclovir for CMV prophylaxis in 2014-2015 at a tertiary pediatric medical center...
April 5, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28371814/the-duck-enteritis-virus-early-protein-ul13-found-in-both-nucleus-and-cytoplasm-influences-viral-replication-in-cell-culture
#14
X Hu, M Wang, S Chen, R Jia, D Zhu, M Liu, Q Yang, K Sun, X Chen, A Cheng
The UL13 protein of the duck enteritis virus (DEV), predicted to encode a Ser/Thr protein kinase, belongs to the family of conserved herpesvirus protein kinases (CHPK), which plays an important role in herpesvirus proliferation. In this study, truncated UL13 was expressed as a fusion protein of approximately 44 kDa using a prokaryotic expression system, and this protein was used to generate a specific anti-UL13 antibody. This antibody detected UL13 starting at 4 h post infection in duck embryonic fibroblast cells and identified UL13 to be present in both the cytoplasm and the nucleus...
March 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28369203/risk-factors-and-outcomes-of-ganciclovir-resistant-cytomegalovirus-infection-in-solid-organ-transplant-recipients
#15
C E Fisher, J L Knudsen, E D Lease, K R Jerome, R M Rakita, M Boeckh, A P Limaye
Background: Ganciclovir-resistant (ganR)-CMV is an emerging and important problem in solid-organ transplant (SOT) recipients. Only through direct comparison of ganR- and ganciclovir-sensitive (ganS)-CMV infection can risk factors and outcomes attributable specifically to ganciclovir resistance be appropriately determined. Methods: We performed a retrospective, case-control (1:3) study of SOT recipients with genotypically-confirmed ganR-CMV (n=37) and ganS-CMV infection (n=109), matched by donor/recipient CMV serostatus, year and organ transplanted, and clinical manifestation...
March 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28367531/bilateral-cytomegalovirus-retinitis-in-a-healthy-infant
#16
Seyedeh Maryam Hosseini, Mir-Naghi Moosavi, Naser Shoeibi, Mehdi Sakhaee, Hossein Ghavamsaeedi
PURPOSE: To report a case of bilateral cytomegalovirus (CMV) retinitis in an otherwise healthy infant. METHODS: A four-month-old, healthy, male infant was evaluated for visual inattention. RESULTS: This full-term infant with a normal birth weight and an uneventful gestational period was referred with symptoms of visual inattention, fever, and agitation one week prior to admission. Ocular involvements were detected in the form of bilateral pan uveitis with diffuse bilateral retinitis and vasculitis with hemorrhage in the peripheral retina and posterior pole...
March 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28348914/brincidofovir-use-after-foscarnet-crystal-nephropathy-in-a-kidney-transplant-recipient-with-multiresistant-cytomegalovirus-infection
#17
Romain Vial, Christine Zandotti, Sophie Alain, Alexandre Decourt, Noémie Jourde-Chiche, Raj Purgus, Charleric Bornet, Laurent Daniel, Valérie Moal, Tristan Legris
Background. Cytomegalovirus (CMV) antiviral drug resistance constitutes an increasing challenge in transplantation. Foscarnet is usually proposed when resistance for ganciclovir is suspected, but its use is limited by its nephrotoxicity. Case Presentation. We report a case of multiresistant CMV disease in a kidney transplant recipient. Foscarnet was prescribed after ganciclovir treatment failure in a patient with two mutations in the UL97 viral gene. Foscarnet induced biopsy-proven kidney crystal precipitation that resulted in severe acute transplant failure and nephrotic syndrome...
2017: Case Reports in Transplantation
https://www.readbyqxmd.com/read/28292662/cytomegalovirus-duodenitis-associated-with-life-threatening-duodenal-hemorrhage-in-an-immunocompetent-patient-a-case-report
#18
Lucy Shen, David Youssef, Suzan Abu-Abed, Sangita K Malhotra, Kenneth Atkinson, Elena Vikis, George Melich, Shawn MacKenzie
INTRODUCTION: Cytomegalovirus (CMV) is known to be opportunistic in immunocompromised patients. However, there have been emerging cases of severe CMV infections found in immunocompetent patients. Gastrointestinal (GI) CMV disease is the most common manifestation affecting immunocompetent patients, with duodenal involvement being exceedingly rare. Presented is a case of an immunocompetent patient with life-threatening bleeding caused by CMV duodenitis, requiring surgical intervention. PRESENTATION OF CASE: A 60-year-old male with history of disseminated Methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia and aortic valve infective endocarditis, presented with life-threatening upper GI hemorrhage...
February 21, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28283734/intestinal-perforation-due-to-hemorrhagic-cytomegalovirus-enteritis-in-a-patient-with-severe-uncontrolled-lupus-nephritis-a-case-and-review-of-the-literature
#19
REVIEW
Keigo Ikeda, Shihoko Nakajima, Kana Tanji, Takuya Hirai, Kaori Uomori, Shinji Morimoto, Shigeki Tomita, Masaki Fukunaga, Naoto Tamura, Iwao Sekigawa
A 31-year-old woman with systemic lupus erythematosus and lupus nephritis was treated with prednisone and immunosuppressants. After her lupus nephritis symptoms worsened, both high-dose steroid and cyclophosphamide pulse therapy were administered. The patient developed an intestinal perforation, and laparoscopic Hartmann's surgery was performed on the sigmoid colon. Serum Cytomegalovirus (CMV) antigen C7HRP was detected, and the patient was diagnosed with CMV colitis and underwent a colon resection. Severe hematochezia continued despite ganciclovir administration, and the patient underwent laparoscopic total colectomy and partial ileostomy...
March 11, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28220857/samhd1-enhances-nucleoside-analogue-efficacy-against-hiv-1-in-myeloid-cells
#20
Paula Ordonez, Simone Kunzelmann, Harriet C T Groom, Melvyn W Yap, Simon Weising, Chris Meier, Kate N Bishop, Ian A Taylor, Jonathan P Stoye
SAMHD1 is an intracellular enzyme that specifically degrades deoxynucleoside triphosphates into component nucleoside and inorganic triphosphate. In myeloid-derived dendritic cells and macrophages as well as resting T-cells, SAMHD1 blocks HIV-1 infection through this dNTP triphosphohydrolase activity by reducing the cellular dNTP pool to a level that cannot support productive reverse transcription. We now show that, in addition to this direct effect on virus replication, manipulating cellular SAMHD1 activity can significantly enhance or decrease the anti-HIV-1 efficacy of nucleotide analogue reverse transcription inhibitors presumably as a result of modulating dNTP pools that compete for recruitment by viral polymerases...
February 21, 2017: Scientific Reports
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