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https://www.readbyqxmd.com/read/28928612/human-herpesvirus-6-induced-inflammatory-cardiomyopathy-in-immunocompetent-children
#1
REVIEW
Surabhi Reddy, Eva Eliassen, Gerhard R Krueger, Bibhuti B Das
Over the last decade, human herpesvirus 6 (HHV-6) has been implicated in the etiology of pediatric myocarditis and subsequent dilated cardiomyopathy (DCM). This review provides an overview of recent literature investigating the pathophysiological relevance of HHV-6 in inflammatory cardiomyopathy. We examined 11 cases of previously published pediatric myocarditis and/or DCM associated with HHV-6 and also our experience of detection of virus particles in vascular endothelium of HHV-6 positive endomyocardial biopsy tissue by electron microscopy...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28902954/predominant-contribution-of-cd4-t-cells-to-human-herpesvirus-6-hhv-6-load-in-the-peripheral-blood-of-patients-with-drug-induced-hypersensitivity-syndrome-and-persistent-hhv-6-infection
#2
Fumi Miyagawa, Yuki Nakamura, Rie Ommori, Kazuya Miyashita, Hiroshi Iioka, Natsuki Miyashita, Mitsuko Nishikawa, Yukiko Himuro, Kohei Ogawa, Hideo Asada
No abstract text is available yet for this article.
September 13, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28902907/pcr-detection-of-human-herpesviruses-in-colonic-mucosa-of-individuals-with-inflammatory-bowel-disease-comparison-with-individuals-with-immunocompetency-and-hiv-infection
#3
Takayuki Shimada, Naoyoshi Nagata, Koki Okahara, Akane Joya, Tsunefusa Hayashida, Shinichi Oka, Toshiyuki Sakurai, Junichi Akiyama, Naomi Uemura, Hiroyuki Gatanaga
BACKGROUND: Detection of human herpesviruses (HHVs) other than cytomegalovirus (CMV) in colonic mucosa of individuals with inflammatory bowel disease (IBD) remains unknown. This study identified eight HHVs in the colonic mucosa of individuals with IBD and compared the results with immunocompetent and human immunodeficiency virus (HIV)-infected individuals. METHODS: A total of 89 individuals who had colorectal ulcer on colonoscopy were enrolled: 26 with immunocompetency (n = 26), 41 with IBD, and 22 with HIV infection...
2017: PloS One
https://www.readbyqxmd.com/read/28894558/ebv-and-hhv-6-circulating-subtypes-in-people-living-with-hiv-in-burkina-faso-impact-on-cd4-t-cell-count-and-hiv-viral-load
#4
Lassina Traore, Ouéogo Nikiema, Abdoul Karim Ouattara, Tegwindé Rébéca Compaore, Serge Théophile Soubeiga, Birama Diarra, Dorcas Obiri-Yeboah, Pegdwendé Abel Sorgho, Florencia Wendkuuni Djigma, Cyrille Bisseye, Albert Théophane Yonli, Jacques Simpore
Epstein Barr Virus (EBV) and Human Herpes Virus 6 (HHV-6) are responsible for severe diseases, particularly in immunocompromised persons. There is limited data of the infection of these opportunistic viruses in Burkina Faso. The purpose of this study was to characterize EBV and HHV-6 subtypes and to assess their impact on CD4 T cell count, HIV-1 viral load and antiretroviral treatment in people living with HIV-1. The study population consisted of 238 HIV-positive patients with information on the CD4 T cell count, HIV-1 viral load and HAART...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28838940/chromosomally-integrated-hhv-6-a-new-piece-of-the-puzzle
#5
Per Ljungman
No abstract text is available yet for this article.
August 24, 2017: Blood
https://www.readbyqxmd.com/read/28835501/inherited-chromosomally-integrated-human-herpesvirus-6-genomes-are-ancient-intact-and-potentially-able-to-reactivate-from-telomeres
#6
Enjie Zhang, Adam J Bell, Gavin S Wilkie, Nicolás M Suárez, Chiara Batini, Colin D Veal, Isaac Armendáriz-Castillo, Rita Neumann, Victoria E Cotton, Yan Huang, David J Porteous, Ruth F Jarrett, Andrew J Davison, Nicola J Royle
The genomes of human herpesviruses 6A and 6B (HHV-6A and HHV-6B) have the capacity to integrate into telomeres, the essential capping structures of chromosomes that play roles in cancer and ageing. About 1% of people worldwide are carriers of chromosomally integrated HHV-6 (ciHHV-6), which is inherited as a genetic trait. Understanding the consequences of integration for the evolution of the viral genome, for the telomere and for the risk of disease associated with carrier status is hampered by a lack of knowledge about ciHHV-6 genomes...
August 23, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28822107/successful-treatment-and-fdg-pet-ct-monitoring-of-hhv-6-encephalitis-in-a-non-neutropenic-patient-case-report-and-literature-review
#7
Elda Righi, Alessia Carnelutti, Daniele Muser, Francesco Zaja, Elisa Lucchini, Federico Pea, Fernando Di Gregorio, Abass Alavi, Matteo Bassetti
Human herpesvirus (HHV)-6 reactivation is associated with severe forms of encephalitis among patients undergoing hematopoietic stem cell transplantation. Cases in non-neutropenic patients are uncommon. The efficacy of ganciclovir and other compounds that are used for the treatment of HHV-6 encephalitis remains suboptimal and linked to toxicity. Valganciclovir, the oral prodrug of ganciclovir, could be practical to treat outpatients, but it is not commonly used for severe cases. We report a case of HHV-6 encephalitis in a non-neutropenic patient successfully treated with valganciclovir and undergoing therapeutic drug monitoring in plasma and in the cerebrospinal fluid...
August 18, 2017: Journal of Neurovirology
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
#8
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...
August 8, 2017: Brain & Development
https://www.readbyqxmd.com/read/28783452/off-the-shelf-virus-specific-t-cells-to-treat-bk-virus-human-herpesvirus-6-cytomegalovirus-epstein-barr-virus-and-adenovirus-infections-after-allogeneic-hematopoietic-stem-cell-transplantation
#9
Ifigeneia Tzannou, Anastasia Papadopoulou, Swati Naik, Kathryn Leung, Caridad A Martinez, Carlos A Ramos, George Carrum, Ghadir Sasa, Premal Lulla, Ayumi Watanabe, Manik Kuvalekar, Adrian P Gee, Meng-Fen Wu, Hao Liu, Bambi J Grilley, Robert A Krance, Stephen Gottschalk, Malcolm K Brenner, Cliona M Rooney, Helen E Heslop, Ann M Leen, Bilal Omer
Purpose Improvement of cure rates for patients treated with allogeneic hematopoietic stem-cell transplantation (HSCT) will require efforts to decrease treatment-related mortality from severe viral infections. Adoptively transferred virus-specific T cells (VSTs) generated from eligible, third-party donors could provide broad antiviral protection to recipients of HSCT as an immediately available off-the-shelf product. Patient and Methods We generated a bank of VSTs that recognized five common viral pathogens: Epstein-Barr virus (EBV), adenovirus (AdV), cytomegalovirus (CMV), BK virus (BKV), and human herpesvirus 6 (HHV-6)...
August 7, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28783148/clinical-characteristics-and-outcome-of-human-herpesvirus-6-encephalitis-after-allogeneic-hematopoietic-stem-cell-transplantation
#10
M Ogata, K Oshima, T Ikebe, K Takano, H Kanamori, T Kondo, Y Ueda, T Mori, H Hashimoto, H Ogawa, T Eto, T Ueki, T Miyamoto, T Ichinohe, Y Atsuta, T Fukuda
In this retrospective analysis using the Transplant Registry Unified Management Program, we identified 145 patients with human herpesvirus (HHV)-6 encephalitis among 6593 recipients. The cumulative incidences of HHV-6 encephalitis at 100 days after transplantation in all patients, recipients of bone marrow or PBSCs and recipients of cord blood were 2.3%, 1.6% and 5.0%, respectively. Risk factors identified in multivariate analysis were male sex, type of transplanted cells (relative risk in cord blood transplantation, 11...
August 7, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28758263/anti-epileptic-drugs-induce-cutaneous-lymphocyte-associated-antigen-down-regulation-leading-to-potential-human-herpes-virus-7-reactivation-in-clinically-asymptomatic-patients
#11
F Caillot, E Andrieu, E Houivet, S Duvert-Lehembre, S Calbo, B Sabbah, D Maltete, O Martinaud, F Le Goff, P Malekpour, M Berard, S Rogez, P Joly, D Picard, P Musette
Anti-epileptic drugs (AED) are known to cause cutaneous adverse drug-induced reactions. The pathogenesis of these drug-induced reactions remains poorly understood. In our previous multicenter prospective study, we evidenced reactivation of Epstein-Barr Virus (EBV), Human Herpes Virus 6 (HHV-6) and/or Human Herpes Virus 7 (HHV-7) in 76% of Drug Reaction with Eosinophilia and Systemic Symptom (DRESS) patients. As a consequence of this increased viral antigen exposure, EBV-specific CD8+ T lymphocytes that expressed high levels of Cutaneous Lymphocyte-associated Antigen (CLA) homing markers of skin were found both in blood and in involved organs including skin...
July 31, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28755030/the-human-vascular-endothelial-cell-line-huv-ec-c-harbors-the-integrated-hhv-6b-genome-which-remains-stable-in-long-term-culture
#12
Setsuko Shioda, Fumio Kasai, Midori Ozawa, Noriko Hirayama, Motonobu Satoh, Yousuke Kameoka, Ken Watanabe, Norio Shimizu, Huamin Tang, Yasuko Mori, Arihiro Kohara
Human herpes virus 6 (HHV-6) is a common human pathogen that is most often detected in hematopoietic cells. Although human cells harboring chromosomally integrated HHV-6 can be generated in vitro, the availability of such cell lines originating from in vivo tissues is limited. In this study, chromosomally integrated HHV-6B has been identified in a human vascular endothelial cell line, HUV-EC-C (IFO50271), derived from normal umbilical cord tissue. Sequence analysis revealed that the viral genome was similar to the HHV-6B HST strain...
July 28, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28746781/human-herpesvirus-6-encephalitis-following-chemotherapy-induction-for-acute-myelogenous-leukemia
#13
John W Frey, Joseph N Cherabie, Maha A Assi
We report a case of human herpesvirus-6 (HHV-6) encephalitis in a neutropenic patient who had undergone chemotherapy induction for acute myelogenous leukemia while on broad-spectrum antimicrobial therapy. The patient displayed symptoms of confusion, amnesia, and lethargy. Diagnosis was made via polymerase chain reaction analysis of cerebrospinal fluid. Electroencephalogram and magnetic resonance imaging of the brain were unremarkable. Following diagnosis, the patient was successfully treated with ganciclovir...
July 26, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28737715/latency-integration-and-reactivation-of-human-herpesvirus-6
#14
REVIEW
Shara N Pantry, Peter G Medveczky
Human herpesvirus-6A (HHV-6A) and human herpesvirus-6B (HHV-6B) are two closely related viruses that infect T-cells. Both HHV-6A and HHV-6B possess telomere-like repeats at the terminal regions of their genomes that facilitate latency by integration into the host telomeres, rather than by episome formation. In about 1% of the human population, human herpes virus-6 (HHV-6) integration into germline cells allows the viral genome to be passed down from one generation to the other; this condition is called inherited chromosomally integrated HHV-6 (iciHHV-6)...
July 24, 2017: Viruses
https://www.readbyqxmd.com/read/28728872/oropharyngeal-lesions-in-pityriasis-rosea
#15
Giulia Ciccarese, Francesco Broccolo, Alfredo Rebora, Aurora Parodi, Francesco Drago
BACKGROUND: Pityriasis rosea (PR) is an exanthematous disease associated with the endogenous systemic reactivation of human herpesvirus-6 (HHV-6) and human herpesvirus-7 (HHV-7). Oropharyngeal lesions may be associated with the exanthema, but anecdotal evidence suggests that few dermatologists are aware of their occurrence. OBJECTIVE: Classifying oropharyngeal lesions in PR, establishing their prevalence, and assessing their possible association with different PR forms...
July 17, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28704770/detection-of-oncogenic-viruses-in-water-environments-by-a-luminex-based-multiplex-platform-for-high-throughput-screening-of-infectious-agents
#16
P Di Bonito, M Iaconelli, T Gheit, M Tommasino, S Della Libera, L Bonadonna, G La Rosa
Recent studies documented the detection of viruses strongly associated with human cancer in urban sewages and other water environments worldwide. The aim of this study was to estimate the occurrence of human oncogenic viruses in environmental samples (sewage, river, marine, and pool/spa water) using highly sensitive and specific multiplex bead-based assays (Luminex technology). A total of 33 samples were analysed for 140 oncogenic viral agents, including mucosal and cutaneous human papillomaviruses (HPVs), human polyomaviruses (HPyV), human herpesviruses (HHV) and mouse mammary tumour virus (MMTV)...
July 5, 2017: Water Research
https://www.readbyqxmd.com/read/28699856/analysis-of-the-origin-of-inherited-chromosomally-integrated-human-herpesvirus-6-in-the-japanese-population
#17
Yoshiki Kawamura, Tamae Ohye, Hiroki Miura, Masaru Ihira, Yuri Kato, Hiroki Kurahashi, Tetsushi Yoshikawa
Integration of the complete human herpesvirus 6 (HHV-6) genome into the telomere of a chromosome has been reported in some individuals (inherited chromosomally integrated HHV-6; iciHHV-6). Since the proportion of iciHHV-6-positive individuals with integration in chromosome 22 is high in Japan, we hypothesized a founder effect. In this study, we sought to elucidate the reason for the high proportion of viral integrations into chromosome 22. We analyzed six cases of iciHHV-6A and two cases of iciHHV-6B, including one iciHHV-6A case with a matched sample from a father and one iciHHV-6B case with a matched sample from a mother...
July 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28650593/hhv-6-in-liver-transplantation-a-literature-review
#18
REVIEW
Tuan L Phan, Irmeli Lautenschlager, Raymund R Razonable, Flor M Munoz
Human herpesvirus 6 (HHV-6A and HHV-6B) can cause primary infection or reactivate from latency in liver transplant recipients, which can result in a variety of clinical syndromes, including fever, hepatitis, encephalitis and higher rates of graft dysfunction as well as indirect effects including increased risks of mortality, CMV disease, hepatitis C progression and greater fibrosis scores. Although HHV-6 infection is currently diagnosed by quantifying viral DNA in plasma or blood, biopsy to demonstrate histopathological effects of HHV-6 remains the gold standard for diagnosis of end-organ disease...
June 26, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28601677/impact-of-stem-cell-graft-on-early-viral-infections-and-immune-reconstitution-after-allogeneic-transplantation-in-adults
#19
Marina Illiaquer, Berthe-Marie Imbert-Marcille, Thierry Guillaume, Lucie Planche, Marie Rimbert, Céline Bressollette-Bodin, Amandine Le Bourgeois, Pierre Peterlin, Alice Garnier, Claire Le Houerou, Philippe Moreau, Mohamad Mohty, Patrice Chevallier
BACKGROUND: Viral infections are well-known complications after allogeneic stem cell transplant (allo-SCT). OBJECTIVES: We compared prospectively incidences of DNAemia and active infections (AI) for five opportunistic viruses (Human Herpesvirus 6 (HHV-6), Epstein-Barr virus (EBV), BK polyomavirus (BKPyV), Cytomegalovirus (CMV) and Adenovirus (ADV)) and kinetics of immune reconstitution (IR) in adults receiving either double umbilical cord blood (dUCB group) or unrelated peripheral blood stem cell (uPBSC group) allo-SCT after a reduced-intensity conditioning (RIC) regimen...
May 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28598363/drug-reaction-with-eosinophilia-and-systemic-symptoms-dress-an-interplay-among-drugs-viruses-and-immune-system
#20
REVIEW
Yung-Tsu Cho, Che-Wen Yang, Chia-Yu Chu
Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is a severe multiorgan hypersensitivity reaction mostly caused by a limited number of eliciting drugs in patients with a genetic predisposition. Patients with DRESS syndrome present with characteristic but variable clinical and pathological features. Reactivation of human herpesviruses (HHV), especially HHV-6, is the hallmark of the disease. Anti-viral immune responses intertwined with drug hypersensitivity make the disease more complicated and protracted...
June 9, 2017: International Journal of Molecular Sciences
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