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https://www.readbyqxmd.com/read/29900673/dynamics-of-virus-specific-t-cell-immunity-in-pediatric-liver-transplant-recipients
#1
R J Arasaratnam, I Tzannou, T Gray, P I Aguayo-Hiraldo, M Kuvalekar, S Naik, A Gaikwad, H Liu, T Miloh, J F Vera, R W Himes, F M Munoz, A M Leen
Immunosuppression following solid organ transplantation (SOT) has a deleterious effect on cellular immunity leading to frequent and prolonged viral infections. To better understand the relationship between post-transplant immunosuppression and circulating virus-specific T cells, we prospectively monitored the frequency and function of T cells directed to a range of latent (CMV, EBV, HHV6, BK) and lytic (AdV) viruses in 16 children undergoing liver transplantation for up to 1 year post-transplant. Following transplant, there was an immediate decline in circulating virus-specific T cells, which recovered post-transplant, coincident with the introduction and subsequent routine tapering of immunosuppression...
June 13, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29852190/multiplex-pcr-reveals-high-prevalence-of-enterovirus-and-hhv6-in-acellular-paediatric-cerebrospinal-fluid-samples
#2
Sheila F Lumley, Dave Pritchard, Atanu Dutta, Philippa C Matthews, Kathy Cann
No abstract text is available yet for this article.
May 28, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29850400/cytomegalovirus-myocarditis-in-a-patient-with-systemic-lupus-erythematosus-sle-successfully-treated-with-ganciclovir
#3
Lavinia Maria Saraca, Ludovico Lazzari, Cinzia di Giuli, Alessandro Lavagna, Paola Mezzetti, Daniela Bovelli, Enrico Boschetti, Daniela Francisci
Myocarditis is an inflammatory disease of the myocardium. Viruses, such as enterovirus, adenovirus, parvovirus B19, HHV6 or cytomegalovirus (CMV) and autoimmune diseases are recognized causes of myocarditis. We describe the clinical case of a young Indian woman with SLE and a concomitant acute CMV related myocarditis with favourable outcome after ganciclovir therapy. CMV myocarditis may range from being a subclinical infection with incidental findings on ECG to a life threating presentation. There are no trials demonstrating the efficacy of antiviral therapy in myocarditis...
2018: IDCases
https://www.readbyqxmd.com/read/29692453/controversies-in-the-management-of-cutaneous-adverse-drug-reactions
#4
Yashpal Manchanda, Sudip Das, Aarti Sarda, Projna Biswas
Some cutaneous adverse drug reactions (CADRs) are severe life-threatening conditions due to multisystem involvements with a high morbidity and mortality rates ranging from 25 - 70% and require immediate medical care. But there are huge controversies regarding the management because large clinical trials are lacking. Most frequent discussion and division occur regarding the use of systemic corticosteroid as early intervention with corticosteroids controls inflammation. Corticosteroids are potent agents that target several intracellular processes to modify almost all components of inflammatory and immune responses but their impact on the long term disease course is not known...
March 2018: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/29499037/immune-responses-to-an-early-lytic-cytomegalovirus-antigen-in-systemic-lupus-erythematosus-patients-t-cell-responses-cytokine-secretions-and-antibody-status
#5
Anette Holck Draborg, Niclas Stefan Rasmussen, Janni Lisander Larsen, Charlotte Sværke Jørgensen, Noreen Sandhu, Kristin Skogstrand, Søren Jacobsen, Gunnar Houen
We investigated immune responses to a lytic cytomegalovirus antigen (CMVpp52), and to a lytic human herpes virus (HHV) 6 antigen (HHV6p41), in systemic lupus erythematosus (SLE) patients and healthy controls (HCs), in order to clarify if the previously established impaired responses to Epstein-Barr virus (EBV) in SLE patients is a general defect in their responses against (all) HHVs. Multiplex Luminex technology results showed a normal induction of five quantified cytokines (interferon γ, interleukin(IL)12, IL17, IL10, and tumor necrosis factor α) in SLE patients compared to HCs upon stimulation with CMVpp52 and HHV6p41...
2018: PloS One
https://www.readbyqxmd.com/read/29487057/human-herpesvirus-6-viremia-affects-t-cell-reconstitution-after-allogeneic-hematopoietic-stem-cell-transplantation
#6
Coco de Koning, Rick Admiraal, Stefan Nierkens, Jaap Jan Boelens
Human herpesvirus 6 (HHV6) viremia is a common cause of morbidity following allogeneic hematopoietic cell transplantation (HCT). We previously associated T-cell reconstitution with HHV6 viremia. Here, we investigated whether HHV6 viremia affects T-cell reconstitution after HCT in a time-dependent retrospective analysis. We included 273 pediatric patients (0.1-22.7 years; median follow-up, 58 months) receiving a first HCT between 2004 and 2014. HHV6 was screened weekly in plasma via polymerase chain reaction and occurred in 79 patients (29%) at a median time of 19 days after transplant...
February 27, 2018: Blood Advances
https://www.readbyqxmd.com/read/29429561/-dress-syndrome-secondary-to-pyrazinamide-an-uncommon-complication-of-tuberculosis-treatment
#7
U D Kombila, W Ka, F B R Mbaye, N F Diouf, L Fall, P Ouedraogo, A N E Koutonin, Y Dia Kane, N Oumar Toure Badiane
INTRODUCTION: The Drug Reaction with Eosinophilia and Systemic Symptom (DRESS) is a severe drug-induced reaction. CASE REPORT: We report the case of a 35-year-old man treated by RHEZ for a first episode of a smear positive pulmonary tuberculosis and who developed a DRESS syndrome due to pyrazinamide after twenty days of treatment, associated with a viral reactivation to Human Herpes Virus 6 (HHV6). He had a skin eruption, liver involvement and hypereosinophilia...
January 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29239849/hepatitis-during-pregnancy-a-case-of-hemophagocytic-lymphohistiocytosis
#8
Halil Yildiz, Bernard Vandercam, Xave Thissen, Mina Komuta, Nicolas Lanthier, Frederic Debieve, Geraldine Dahlqvist
Hemophagocytic lymphohistiocytosis (HLH) is a rare but severe and potentially fatal syndrome that can occur during pregnancy. A 36 years-old woman, at 29 weeks of gestation, presented with itchiness and jaundice since a week. On clinical examination she was apyrexial and frankly icteric. Laboratory data showed evidence of acute hepatitis. A complete work-up was made excluding viral hepatitis (HAV, HEV, HBV, HCV, HHV6, CMV, EBV) and autoimmune liver disease. Liver diseases related to pregnancy were not completely excluded...
November 24, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29191533/oncogenic-viruses-in-skull-base-chordomas
#9
Youssef Yakkioui, Ernst-Jan M Speel, Jacobus J Van Overbeeke, Merel J M Boderie, Sreedhar Pujari, Axel Zur Hausen, Petra F G Wolffs, Yasin Temel
BACKGROUND: Chordomas are rare tumors assumed to derive from notochordal remnants. We believe that a molecular switch is responsible for their malignant behavior. The involvement of oncogenic viruses has not been studied, however. Thus, in the present study, we investigated the presence of oncogenic viruses in chordomas. METHODS: DNA and RNA from snap-frozen chordoma (n = 18) and chondrosarcoma (n = 15) specimens were isolated. Real-time PCR or RT-PCR was performed to assess the presence of multiple oncogenic viruses, including herpesviridea (herpes simplex virus [HSV]-1, HSV-2, Epstein-Barr virus [EBV], cytomegalovirus, human herpesvirus [HHV]- 6, HHV-7, and Kaposi's sarcoma-associated herpesvirus), polyomaviridea (parvovirus B19 [PVB19], BK virus, JC virus, Simian virus 40, Merkel cell polyomavirus, human polyomavirus [HPyV]-6, and HPyV-7), papillomaviridae, and respiratory viruses...
April 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29178248/no-indication-of-increased-infection-rates-using-low-dose-alemtuzumab-instead-of-anti-thymocyte-globulin-as-graft-versus-host-disease-prophylaxis-before-allogeneic-stem-cell-transplantation
#10
Thomas Neumann, Laila Schneidewind, Thomas Thiele, Daniel Pink, Meike Schulze, Christian Schmidt, William Krüger
BACKGROUND: Alemtuzumab as part of the conditioning protocol is effective in reducing graft-versus-host disease (GvHD), but may be associated with increased infection rates, especially when using high doses (ie, 100 mg). METHODS: We performed a retrospective, single-center, case-control study analyzing the rates of neutropenic fever, cytomegalovirus (CMV) reactivation, Epstein-Barr virus (EBV) reactivation, clinical manifest toxoplasmosis, and clinical manifest human herpesvirus-6 (HHV6) infection using low-dose alemtuzumab in comparison with anti-thymocyte globulin (ATG) as GvHD prophylaxis before allogeneic stem cell transplantation...
February 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29169653/-how-to-manage-ebv-reactivation-and-ebv-ptld-cmv-and-human-herpesvirus-6-reactivation-and-infection-after-allogeneic-stem-cell-transplantation-a-report-of-the-sfgm-tc-update
#11
REVIEW
Eolia Brissot, Tamim Alsuliman, Bérengère Gruson, Eric Hermet, Yordanka Tirefort, Ibrahim Yakoub-Agha, Sophie Alain
The French society of bone marrow transplantation and cell therapy (SFGM-TC) organizes annually workshops in the attempt to harmonize clinical practices between different francophone transplantation center. Here, we report our recommendations regarding the management of Epstein Barr virus reactivation and lymphoproliferative disorders, cytomegalovirus (CMV) and human herpes virus 6 (HHV6) after allogeneic stem cell transplantation.
December 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/29107929/viral-sequences-in-human-cancer
#12
Paul G Cantalupo, Joshua P Katz, James M Pipas
We have developed a virus detection and discovery computational pipeline, Pickaxe, and applied it to NGS databases provided by The Cancer Genome Atlas (TCGA). We analyzed a collection of whole genome (WGS), exome (WXS), and RNA (RNA-Seq) sequencing libraries from 3052 participants across 22 different cancers. NGS data from nearly all tumor and normal tissues examined contained contaminating viral sequences. Intensive computational and manual efforts are required to remove these artifacts. We found that several different types of cancers harbored Herpesviruses including EBV, CMV, HHV1, HHV2, HHV6 and HHV7...
January 1, 2018: Virology
https://www.readbyqxmd.com/read/29045430/the-association-between-herpes-virus-infections-and-functional-somatic-symptoms-in-a-general-population-of-adolescents-the-trails-study
#13
Iris Jonker, Robert Schoevers, Hans Klein, Judith Rosmalen
BACKGROUND: FSS have been suggested to follow activation of the immune system, triggered by herpes virus infections. The aim of this study was to find out whether herpes virus infections were associated with the experience of FSS in adolescents, and whether this association was mediated by hsCRP, as a general marker of immune activation. METHODS: This study was performed in TRAILS, a large prospective population cohort of 2230 adolescents (mean age: 16.1 years, SD = ...
2017: PloS One
https://www.readbyqxmd.com/read/28954348/-significance-of-pcr-detection-of-hhv6-in-gastro-biopsy-on-the-course-of-diarrhea-in-patients-with-severe-diarrhea-after-allogeneic-hematopoietic-stem-cell-transplantation
#14
T T Han, X S Zhao, X J Huang, X H Zhang, K Y Liu, Y Wang, C H Yan, L P Xu
Objective: To investigate the clinical significance of PCR detection of human herpesvirus 6 (HHV6) in gastro biopsy on the course of diarrhea in patients with severe diarrhea after allogeneic hematopoietic stem cell transplantation (HSCT) . Methods: Data from a cohort of 45 HSCT recipients (including age, sex, transplantation conditions, graft-versus-host disease, treatments, clinical signs, outcome, HHV6, and other infections) performed between 2015 and 2016 were collected. Univariate analysis was used to evaluate influences between the different parameters...
August 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28939451/hla-haploidentical-stem-cell-transplant-with-pretransplant-immunosuppression-for-patients-with-sickle-cell-disease
#15
Anna B Pawlowska, Jerry C Cheng, Nicole A Karras, Weili Sun, Leo D Wang, Alison D Bell, Lisa Gutierrez, Joseph Rosenthal
Allogeneic stem cell transplantation (HCT) is curative in patients with severe sickle cell disease (SCD), but a significant number of patients lack an HLA-identical sibling or matched unrelated donor. Mismatched related (haploidentical) HCT with post-transplant cyclophosphamide (PTCY) allows expansion of the donor pool but is complicated by high rates of graft failure. In this report we describe a favorable haploidentical HCT approach in a limited cohort of SCD patients with significant comorbidities. To reduce the risk of graft failure we administered the conditioning regimen of rabbit antithymocyte globulin, busulfan, and fludarabine preceded with 2 courses of pretransplant immunosuppressive therapy (PTIS) with fludarabine and dexamethasone...
January 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28930865/presence-of-human-herpesvirus-6b-in-the-pancreas-of-subjects-with-and-without-type-1-diabetes
#16
Maja Ericsson, Oskar Skog
OBJECTIVES: The aims of this study were to investigate the presence of human herpesvirus 6 (HHV6) A and B in human pancreata and to search for signs of active infection in this organ of subjects with and without type 1 diabetes (T1D). METHODS: Pancreata from brain-dead organ donors with and without T1D were examined for the presence of HHV6 genomic sequences by polymerase chain reaction (PCR), transcripts by reverse transcriptase-PCR, and protein by immunohistochemistry...
November 2017: Pancreas
https://www.readbyqxmd.com/read/28929964/-investigation-of-bacterial-and-viral-etiology-in-community-acquired-central-nervous-system-infections-with-molecular-methods
#17
MULTICENTER STUDY
Hasip Kahraman, Alper Tünger, Şebnem Şenol, Hörü Gazi, Meltem Avcı, Bahar Örmen, Nesrin Türker, Sabri Atalay, Şükran Köse, Sercan Ulusoy, Meltem Işıkgöz Taşbakan, Oğuz Reşat Sipahi, Tansu Yamazhan, Zeynep Gülay, Sema Alp Çavuş, Hüsnü Pullukçu
In this multicenter prospective cohort study, it was aimed to evaluate the bacterial and viral etiology in community-acquired central nervous system infections by standart bacteriological culture and multiplex polymerase chain reaction (PCR) methods. Patients hospitalized with central nervous system infections between April 2012 and February 2014 were enrolled in the study. Demographic and clinical information of the patients were collected prospectively. Cerebrospinal fluid (CSF) samples of the patients were examined by standart bacteriological culture methods, bacterial multiplex PCR (Seeplex meningitis-B ACE Detection (Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae, Listeria monocytogenes, Group B streptococci) and viral multiplex PCR (Seeplex meningitis-V1 ACE Detection kits herpes simplex virus-1 (HSV1), herpes simplex virus-2 (HSV2), varicella zoster virus (VZV), cytomegalovirus (CMV), Epstein Barr virus (EBV) and human herpes virus 6 (HHV6)) (Seeplex meningitis-V2 ACE Detection kit (enteroviruses))...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28834054/herpesviruses-excretion-in-saliva-of-pediatric-transplant-recipients
#18
Consuelo Beatriz Correa Sierra, Vivian Kourí Cardellá, Lissette Pérez Santos, Cesar E Silverio, Norma Hondal, Jose Florin
BACKGROUND: Saliva samples could be used for follow-up of herpesviruses infection in pediatric transplant recipients. OBJECTIVE: With the aim of determining the frequency of herpesviral infections in saliva samples after transplantation, and the association with viremia and complications, a pilot longitudinal follow-up of pediatric Cuban transplanted recipients (kidney and liver) was performed. METHODS: Quantitative real-time polymerase chain reaction of cytomegalovirus (CMV), Epstein-Barr virus, herpes simplex virus, human herpesevirus-6 (HHV6), varicella zoster virus, and human herpesvirus-8 were serially assayed in saliva and serum samples from 27 transplanted patients, during 32 weeks after the graft...
December 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28801087/cause-of-acute-encephalitis-encephalopathy-in-japanese-children-diagnosed-by-a-rapid-and-comprehensive-virological-detection-system-and-differences-in-their-clinical-presentations
#19
Kei Takasawa, Ryuichi Nakagawa, Shigeru Takishima, Kengo Moriyama, Ken Watanabe, Koji Kiyohara, Takeshi Hasegawa, Masahiro Shimohira, Kenichi Kashimada, Norio Shimizu, Tomohiro Morio
BACKGROUND: Acute encephalitis/encephalopathy (AE/E) is a rare and severe complication of common childhood infections; however, a treatment strategy based on clinical and pathological evidence has not been established. METHODS: The clinical data and aetiological results using a rapid and comprehensive virological detection system of 62 Japanese children diagnosed with AE/E from 2010 to 2014 were collected. We assessed clinical differences between causes and effectiveness of our multiplex PCR system to establish a pathogen-based treatment strategy for AE/E...
February 2018: Brain & Development
https://www.readbyqxmd.com/read/28723708/subclinical-herpesvirus-shedding-among-hiv-1-infected-men-on-antiretroviral-therapy
#20
Arcadio Agudelo-Hernandez, Yue Chen, Arlene Bullotta, William G Buchanan, Cynthia R Klamar-Blain, Luann Borowski, Sharon A Riddler, Charles R Rinaldo, Bernard J C Macatangay
OBJECTIVE: We evaluated the subclinical shedding of six different herpesviruses in antiretroviral drug-treated HIV-positive [HIV(+)] MSM, and determined how this is associated with markers of inflammation and immune activation. METHODS: We obtained blood, semen, throat washing, urine, and stool from 15 antiretroviral-treated HIV-1-infected MSM with CD4 T-cell reconstitution, and 12 age-matched HIV-negative [HIV (-)] MSM from the Multicenter AIDS Cohort Study at four timepoints over 24 weeks to measure DNA levels of cytomegalovirus (CMV), Epstein-Barr virus (EBV), herpes simplex virus 1 and 2, human herpesvirus 6 (HHV6), and HHV8...
September 24, 2017: AIDS
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