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Cytomegalovirus

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https://www.readbyqxmd.com/read/29777868/comparative-efficacy-and-safety-of-different-antiviral-agents-for-cytomegalovirus-prophylaxis-in-allogeneic-hematopoietic-cell-transplantation-a-systematic-review-and-meta-analysis
#1
Nico Gagelmann, Per Ljungman, Jan Styczynski, Nicolaus Kröger
Over the past 25 years, several randomized controlled trials have investigated the efficacy of different antiviral agents for cytomegalovirus (CMV) prophylaxis in allogeneic hematopoietic-cell transplantation. We performed a systematic literature review, conventional meta-analysis and network meta-analysis using a random-effects model and risk ratios (RR) with corresponding 95% confidence intervals (CI) as effect estimates. Fifteen randomized controlled trials were identified, including seven different antiviral agents: acyclovir, ganciclovir, maribavir, brincidofovir, letermovir, valacyclovir, and vaccine...
May 16, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29777573/quantiferon-cytomegalovirus-assay-a-potentially-useful-tool-in-the-evaluation-of-cmv-specific-cd8-t-cell-reconstitution-in-pediatric-hematopoietic-stem-cell-transplant-patients
#2
Bilio Paouri, Alexandra Soldatou, Eftihia Petrakou, Maria Theodosaki, Charalampos Tsentidis, Katerina Kaisari, Christina Oikonomopoulou, Minos Matsas, Eugenios Goussetis
Pediatric HSCT recipients are at high risk for CMV reactivation due to their immature immune system and therapy following transplantation. Reconstitution of CMV-specific T-cell immunity is associated with control and protection against CMV. The clinical utility of monitoring CMV-specific CMI to predict CMV viremia in pediatric HSCT patients using the Quantiferon-CMV (QIAGEN® ) test was investigated prospectively. Thirty-seven pediatric allogeneic HSCT recipients were enrolled from 3/2010-6/2012. CMV viremia was detected via weekly real-time PCR...
May 18, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29776766/cytomegalovirus-retinitis-before-and-after-treatment
#3
O Lezrek, O R Matsanga, M Ez-Zahraoui, Z El Moize, M Laghmari, M Lezrek
No abstract text is available yet for this article.
May 15, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29770454/streamlining-a-blood-center-and-hospital-transfusion-service-supply-chain-with-an-informatics-vendor-managed-inventory-solution-development-implementation-and-3-month-follow-up
#4
Hamilton C Tsang, Adam Garcia, Robert Scott, David Lancaster, Dianne Geary, Anh-Thu Nguyen, Raina Shankar, Leslie Buchanan, Tho D Pham
BACKGROUND: The ordering process at Stanford Health Care involved twice-daily shipments predicated upon current stock levels from the blood center to the hospital transfusion service. Manual census determination is time consuming and error prone. We aimed to enhance inventory management by developing an informatics platform to streamline the ordering process and reallocate staff productivity. STUDY DESIGN AND METHODS: The general inventory accounts for more than 50 product categories based on characteristics including component, blood type, irradiation status, and cytomegalovirus serology status...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29770447/effectiveness-of-immunoglobulin-prophylaxis-in-reducing-clinical-complications-of-hematopoietic-stem-cell-transplantation-a-systematic-review-and-meta-analysis
#5
REVIEW
Hilalion Ahn, Jason Tay, Beverley Shea, Brian Hutton, Risa Shorr, Greg A Knoll, Donald William Cameron, Juthaporn Cowan
BACKGROUND: Prophylactic immunoglobulin has been used with varying efficacy to reduce complications in hematopoietic stem cell transplant recipients. STUDY DESIGN AND METHODS: A systematic review and meta-analysis was conducted of randomized controlled trials that assessed clinical outcomes (overall survival, transplant-related mortality, graft-versus-host disease [GVHD], veno-occlusive disease [VOD], interstitial pneumonitis, disease relapse, cytomegalovirus [CMV] infection and disease, non-CMV infection) of immunoglobulin prophylaxis versus placebo in hematopoietic stem cell transplant recipients...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29769722/bystander-cd8-t-cells-are-abundant-and-phenotypically-distinct-in-human-tumour-infiltrates
#6
Yannick Simoni, Etienne Becht, Michael Fehlings, Chiew Yee Loh, Si-Lin Koo, Karen Wei Weng Teng, Joe Poh Sheng Yeong, Rahul Nahar, Tong Zhang, Hassen Kared, Kaibo Duan, Nicholas Ang, Michael Poidinger, Yin Yeng Lee, Anis Larbi, Alexis J Khng, Emile Tan, Cherylin Fu, Ronnie Mathew, Melissa Teo, Wan Teck Lim, Chee Keong Toh, Boon-Hean Ong, Tina Koh, Axel M Hillmer, Angela Takano, Tony Kiat Hon Lim, Eng Huat Tan, Weiwei Zhai, Daniel S W Tan, Iain Beehuat Tan, Evan W Newell
Various forms of immunotherapy, such as checkpoint blockade immunotherapy, are proving to be effective at restoring T cell-mediated immune responses that can lead to marked and sustained clinical responses, but only in some patients and cancer types1-4 . Patients and tumours may respond unpredictably to immunotherapy partly owing to heterogeneity of the immune composition and phenotypic profiles of tumour-infiltrating lymphocytes (TILs) within individual tumours and between patients5,6 . Although there is evidence that tumour-mutation-derived neoantigen-specific T cells play a role in tumour control2,4,7-10 , in most cases the antigen specificities of phenotypically diverse tumour-infiltrating T cells are largely unknown...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769344/efficient-delivery-of-hcmv-t-cell-antigens-by-attenuated-sendai-virus-vectors
#7
Richard Kiener, Markus Fleischmann, Marian Alexander Wiegand, Niels A W Lemmermann, Christiane Schwegler, Christine Kaufmann, Angelique Renzaho, Simone Thomas, Eva Felder, Hans Helmut Niller, Benedikt Asbach, Ralf Wagner
Human Cytomegalovirus (HCMV) represents a major cause of clinical complications during pregnancy as well as immunosuppression and the licensing of a protective HCMV vaccine remains an unmet global need. Herein, we designed and validated novel Sendai virus (SeV) vectors delivering T cell immunogens IE-1 and pp65. To enhance vector safety, we used a replication-deficient strain (rdSeV) that infects target cells in a non-productive manner while retaining viral gene expression. In this study, we explored the impact that transduction with rdSeV has on human dendritic cells (DCs) by comparing it to the parental, replication-competent Sendai virus strain (rcSeV) as well as the poxvirus strain Modified Vaccinia Ankara (MVA)...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769062/seroprevalence-of-hiv-htlv-cmv-hbv-and-rubella-virus-infections-in-pregnant-adolescents-who-received-care-in-the-city-of-bel%C3%A3-m-par%C3%A3-northern-brazil
#8
Aubaneide Batista Guerra, Leonardo Quintão Siravenha, Rogério Valois Laurentino, Rosimar Neris Martins Feitosa, Vânia Nakauth Azevedo, Antonio Carlos Rosário Vallinoto, Ricardo Ishak, Luiz Fernando Almeida Machado
BACKGROUND: Prenatal tests are important for prevention of vertical transmission of various infectious agents. The objective of this study was to describe the prevalence of human immunodeficiency virus (HIV), human T-lymphotropic virus (HTLV), hepatitis B virus (HBV), cytomegalovirus (CMV), rubella virus and vaccination coverage against HBV in pregnant adolescents who received care in the city of Belém, Pará, Brazil. METHODS: A cross-sectional study was performed with 324 pregnant adolescents from 2009 to 2010...
May 16, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29768731/cochlear-implant-performance-in-children-deafened-by-congenital-cytomegalovirus-a-systematic-review
#9
V J C Kraaijenga, F Van Houwelingen, S F Van der Horst, J Visscher, J M L Huisman, E J Hollman, I Stegeman, A L Smit
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is a major cause of sensorineural hearing loss in children. OBJECTIVE OF REVIEW: The objective of this systematic review was to compare performance in pediatric cochlear implant users with SNHL caused by cCMV compared to non-cCMV implantees. TYPE OF REVIEW: Systematic review. SEARCH STRATEGY: Pubmed, EMBASE and the Cochrane databases were searched from inception up to May 15th 2017 for children, cochlear implant, performance and their synonyms...
May 16, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29768545/hcmv-ul97-phosphotransferase-gene-mutations-may-be-associated-with-antiviral-resistance-in-immunocompromised-patients-in-bel%C3%A3-m-pa-northern-brazil
#10
Dorotéa de Fátima Lobato da Silva, Jedson Ferreira Cardoso, Sandro Patroca da Silva, Leda Mani França Arruda, Renato Lopes Fernandes de Medeiros, Marluce Matos Moraes, Rita Catarina Medeiros Sousa
INTRODUCTION: Human cytomegalovirus is one of the causes of opportunist infections in immunocompromised patients, and is triggered by factors such as state of viral latency, weakened immune responses, and development of antiviral resistance to ganciclovir, the only drug offered by the public health system in Brazil to treat the infection. The goal of this study was to identify mutations that may be associated with antiviral resistance in immunocompromised patients. METHODS: Molecular analysis was performed in 82 blood samples and subjected to genomic DNA extraction by a silica-based method...
March 2018: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29768502/interferon-lambda-is-required-for-interferon-gamma-expressing-nk-cell-responses-but-does-not-afford-antiviral-protection-during-acute-and-persistent-murine-cytomegalovirus-infection
#11
Silvia Gimeno Brias, Morgan Marsden, Jessica Forbester, Mathew Clement, Cordelia Brandt, Katherine Harcourt, Leanne Kane, Lucy Chapman, Simon Clare, Ian R Humphreys
Interferon lambda (IFNλ) is a group of cytokines that belong to the IL-10 family. They exhibit antiviral activities against certain viruses during infection of the liver and mucosal tissues. Here we report that IFNλ restricts in vitro replication of the β-herpesvirus murine cytomegalovirus (mCMV). However, IFNλR1-deficient (Ifnλr1-/-) mice were not preferentially susceptible to mCMV infection in vivo during acute infection after systemic or mucosal challenge, or during virus persistence in the mucosa. Instead, our studies revealed that IFNλ influences NK cell responses during mCMV infection...
2018: PloS One
https://www.readbyqxmd.com/read/29768249/detection-of-cytomegalovirus-in-saliva-from-infants-undergoing-sepsis-evaluation-in-the-neonatal-intensive-care-unit-the-virion-c-study
#12
Andrea Ronchi, Christopher P Ouellette, Asuncion Mejías, Douglas Salamon, Amy Leber, Lorenza Pugni, Fabio Mosca, Pablo J Sánchez
OBJECTIVE: To determine the frequency of detection of cytomegalovirus (CMV) among infants evaluated for late-onset sepsis in the neonatal intensive care unit (NICU). STUDY DESIGN: This study was a prospective cohort study. RESULTS: During the 13-month study, 84 infants underwent 116 sepsis evaluations, and CMV DNA was detected in saliva in three (4%) infants (median: gestational age 28 weeks, birth weight 950 g), representing 5% (n=6) of all sepsis evaluations...
May 16, 2018: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/29767504/motion-based-immunological-detection-of-zika-virus-using-pt-nanomotors-and-a-cellphone
#13
Mohamed Shehata Draz, Nivethitha Kota Lakshminaraasimulu, Sanchana Krishnakumar, Dheerendranath Battalapalli, Anish Vasan, Manoj Kumar Kanakasabapathy, Aparna Sreeram, Shantanu Kallakuri, Prudhvi Thirumalaraju, Yudong Li, Stephane Hua, Xu G Yu, Daniel R Kuritzkes, Hadi Shafiee
Zika virus (ZIKV) infection is an emerging pandemic threat to humans that can be fatal in newborns. Advances in digital health systems and nanoparticles can facilitate the development of sensitive and portable detection technologies for timely management of emerging viral infections. Here we report a nanomotor-based bead-motion cellphone (NBC) system for the immunological detection of ZIKV. The presence of virus in a testing sample results in the accumulation of platinum (Pt)-nanomotors on the surface of beads, causing their motion in H2 O2 solution...
May 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29766506/unique-causes-of-esophageal-inflammation-a-histopathologic-perspective
#14
REVIEW
Purva Gopal, Joanna A Gibson, Mikhail Lisvosky, ILKe Nalbantoglu
Gastroenterologists frequently perform endoscopic esophageal mucosal biopsies for pathologic diagnosis in patients experiencing symptoms of esophagitis. The more common causes of esophagitis diagnosed on esophageal mucosal biopsy include reflux esophagitis, eosinophilic esophagitis, and infectious esophagitis caused by Candida albicans, herpes simplex virus, and/or cytomegalovirus. However, there are several causes of esophagitis seen less frequently by pathologists that are very important to recognize. We discuss unique types of esophageal inflammation, including acute bacterial esophagitis, esophageal manifestations of dermatologic diseases, medication-induced esophageal injury, and sloughing esophagitis; and we review their clinical and histopathologic features...
May 16, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29765165/detection-of-cytomegalovirus-dna-in-fecal-samples-as-a-method-for-cmv-enterocolitis-diagnosis-after-allogeneic-stem-cell-transplantation
#15
Alzbeta Zavrelova, Jakub Radocha, Lenka Pliskova, Pavla Paterova, Eva Vejrazkova, Jiri Cyrany, Filip Gabalec, Miroslav Podhola, Pavel Zak
BACKGROUND: Cytomegalovirus enterocolitis is a rare but potentially life threatening complication after allogeneic stem cell transplantation. Its early diagnosis and treatment are essential for a successful outcome. OBJECTIVE: To determine the potential benefit of fecal CMV DNA detection in the diagnosis of CMV colitis among stem cell transplant recipients. STUDY DESIGN: Biopsies from the lower gastrointestinal tract, taken during 69 episodes of diarrhea, were compared with fecal samples previously examined for CMV DNA in 45 patients after allogeneic stem cell transplantation...
May 16, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29764228/anti-infective-chemoprophylaxis-after-solid-organ-transplantation
#16
Paul J Deziel, Raymund Razonable
Solid organ transplant recipients are at high risk of opportunistic infections due to bacterial, viral, fungal and parasitic pathogens. Anti-infective prophylaxis is a time-tested proven strategy for the prevention of these infections after solid organ transplantation. Areas covered: The current recommendations for the prevention of surgical site infections, herpes simplex, cytomegalovirus, invasive fungal infections, and selected parasitic diseases are highlighted. Recent peer-reviewed publications on the prevention of infection after solid organ transplantation were reviewed and their significance was discussed in the context of the current recommendations for preventing infectious complications...
May 15, 2018: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/29762251/prospective-assessment-of-adenovirus-infection-in-pediatric-kidney-transplant-recipients
#17
Rachel M Engen, Meei-Li Huang, Giulia E Park, Jodi M Smith, Ajit P Limaye
BACKGROUND: Adenovirus infection is associated with graft dysfunction and graft loss in pediatric cardiac, lung, and liver transplants in prior retrospective studies, but data in pediatric kidney transplant recipients is limited. METHODS: We conducted a prospective single-center cohort study of 75 consecutive pediatric kidney transplant recipients who underwent monthly screening for adenovirus viremia and symptom assessment for 2 years posttransplant. RESULTS: Adenovirus viremia was detected in 11 (14...
May 2, 2018: Transplantation
https://www.readbyqxmd.com/read/29761395/viral-replication-assay-in-bone-marrow-derived-macrophages
#18
Linda Roback, Lisa P Daley-Bauer
The selection of macrophages as a cell type for investigating virus-host interactions is based on cellular tropism of the virus during infection as well as contribution of these cells to pathogenesis in the host. In response to mouse cytomegalovirus (MCMV) infection, bone marrow-resident monocytes that mobilize to infected tissues to differentiate into macrophages and dendritic cells are hijacked in order to facilitate viral persistence. These cells contribute significantly to MCMV biology and, thus, are actively recruited by the virus-encoded chemokine...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761033/diagnosis-and-treatment-of-congenital-sensorineural-hearing-loss
#19
Divya A Chari, Dylan K Chan
Purpose of Review: The aim of this report is to review current literature regarding the work-up and management of congenital sensorineural hearing loss. Recent Findings: Diagnostic evaluation of a newborn with sensorineural hearing loss begins with a complete audiologic evaluation and comprehensive history and physical exam. This review presents a diagnostic algorithm for the work-up of congenital hearing loss, focusing on the three following modalities: cytomegalovirus testing, genetic evaluation, and imaging...
December 2017: Current Otorhinolaryngology Reports
https://www.readbyqxmd.com/read/29758495/a-rapid-magnetic-particle-based-enzyme-immunoassay-for-human-cytomegalovirus-glycoprotein-b-quantification
#20
F Pires, M Julia Arcos-Martinez, A Cristina Dias-Cabral, Juan C Vidal, Juan R Castillo
Human cytomegalovirus (HCMV) is a herpes virus that can cause severe infections. Still, the available methods for its diagnostic have the main disadvantage of requiring long time to be performed. In this work, a simple magnetic particle-based enzyme immunoassay (mpEIA) for the quantification of glycoprotein B of Human cytomegalovirus (gB-HCMV) in urine samples is proposed. The immunosensor scheme is based on the analyte protein gB-HCMV sandwiched between a primary monoclonal antibody, (MBs-PrG-mAb1), and a secondary anti-gB-HCMV antibody labelled with Horseradish peroxidase (Ab2-HRP) to allow spectrophotometric detection...
April 17, 2018: Journal of Pharmaceutical and Biomedical Analysis
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