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https://www.readbyqxmd.com/read/27902331/the-plasma-virome-of-febrile-adult-kenyans-shows-frequent-parvovirus-b19-infections-and-a-novel-arbovirus-kadipiro-virus
#1
Carolyne Ngoi, Juliana Siqueira, Linlin Li, Xutao Deng, Peter Mugo, Susan Graham, Matt Price, Eduard Sanders, Eric Delwart
Viral nucleic acids present in the plasma of 498 Kenyan adults with unexplained fever were characterized by metagenomics analysis of 51 sample pools. The highest to lowest fraction of plasma pools was positive for parvovirus B19 (75%), pegivirus C (GBV-C) (67%), alpha anellovirus (59%), gamma anellovirus (55%), beta anellovirus (41%), Dengue virus genotype 2 (DENV-2) (16%), HIV-1 (6%), HHV-6 (6%), HBV (4%), rotavirus (4%), norovirus (4%), rhinovirus C (2%), Merkel cell polyomavirus (MCPyV)(2%) and Kadipiro virus (2%)...
October 24, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27885344/drug-induced-hypersensitivity-syndrome-caused-by-carbamazepine-used-for-the-treatment-of-trigeminal-neuralgia
#2
Yuko Ono, Tsuyoshi Shimo, Yoshinori Shirafuji, Toshihisa Hamada, Masanori Masui, Kyoichi Obata, Mayumi Yao, Koji Kishimoto, Akira Sasaki
An 88-year-old man was diagnosed with trigeminal neuralgia, and treatment of carbamazepine 200 mg/day was initiated. About 6 weeks later, the patient developed a skin rash accompanied by fever. He was admitted to hospital and diagnosed with drug-induced hypersensitivity syndrome (DIHS) caused by carbamazepine. Oral carbamazepine treatment was stopped, but blood tests showed acute liver and acute renal failure. Drug-induced lymphocyte stimulation test (DLST) for carbamazepine, human herpes virus-6 (HHV-6) IgG, and CMV-HRP were negative...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27862208/the-cytokines-and-cellular-responses-to-human-herpesvirus-6b-in-patients-with-b-acute-lymphoblastic-leukemia
#3
Faten Nefzi, Claude Lambert, Agnès Gautheret-Dejean, Sylvain Fisson, Quentin Khebizi, Abderrahim Khelif, Henri Agut, Mahjoub Aouni
Human herpesvirus-6 (HHV-6) is a β-herpesvirus with primary infection followed by its lifelong persistence in its host. The T-cell responses to HHV-6 mostly have been characterized using peripheral blood from healthy adults. Although the role of HHV-6 infection in immune modulation in some of the diseases was not elucidated. Therefore, we analyzed the immune response to HHV-6 infection in B-acute lymphobastic leukemia (B-ALL) patients. HHV-6 load was quantified in blood samples at the time of diagnosis of leukemia and at remission...
November 15, 2016: Microbiology and Immunology
https://www.readbyqxmd.com/read/27859994/transmission-of-chromosomally-integrated-human-herpesvirus-6-via-cord-blood-transplantation
#4
Yuji Yamada, Tomoo Osumi, Ken-Ichi Imadome, Etsuko Takahashi, Tamae Ohye, Tetsushi Yoshikawa, Daisuke Tomizawa, Motohiro Kato, Kimikazu Matsumoto
Chromosomally integrated human herpesvirus 6 (ciHHV-6) can be transmitted via allogeneic hematopoietic cell transplantation. To date, only a few cases have been reported. Here, we report a case identified as transmission of ciHHV-6 via cord blood transplantation. Distinguishing transmission of ciHHV-6 from HHV-6 reactivation in cases with high titer of HHV-6 DNA load after transplantation is important to prevent unnecessary exposure to antiviral drugs which could be toxic. This article is protected by copyright...
November 16, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27830722/comprehensive-polymerase-chain-reaction-assay-for-detection-of-pathogenic-dna-in-lymphoproliferative-disorders-of-the-ocular-adnexa
#5
Yoshihiko Usui, Narsing A Rao, Hiroshi Takase, Kinya Tsubota, Kazuhiko Umazume, Daniel Diaz-Aguilar, Takeshi Kezuka, Manabu Mochizuki, Hiroshi Goto, Sunao Sugita
Infectious agents have been identified as a major cause of specific types of human cancers worldwide. Several microorganisms have been identified as potential aggravators of ocular adnexal neoplasms; however, given the rarity of these neoplasms, large epidemiological studies are difficult to coordinate. This study aimed to conduct an exhaustive search for pathogenic DNA in lymphoproliferative disorders (LPD) of the ocular adnexa in a total of 70 patients who were diagnosed with LPD of the ocular adnexa between 2008 and 2013...
November 10, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27800078/-molecular-tests-in-diagnosis-of-cytomegalovirus-cmv-human-herpesvirus-6-hhv-6-and-epstein-barr-virus-ebv-using-real-time-pcr-in-hiv-positive-and-hiv-negative-pregnant-women-in-ouagadougou-burkina-faso
#6
Alice Rogomenoma Ouedraogo, Madeleine Kabre, Cyrille Bisseye, Théodora Mahoukèdè Zohoncon, Maleki Asshi, Serge Théophile Soubeiga, Birama Diarra, Lassina Traore, Florencia Wendkuuni Djigma, Djénéba Ouermi, Virginio Pietra, Nicolas Barro, Jacques Simpore
INTRODUCTION: Herpesvirus EBV, CMV and HHV-6 are viruses that evolve based on pandemic modeling and are responsible for congenital infections causing severe sequelae in infants. This study aims to determine the prevalence of CMV, EBV and HHV-6 among HIV (+) and HIV (-) pregnant women in Ouagadougou. METHODS: In this study 200 blood plasma samples taken from pregnant women, of whom 100 with HIV(+) and 100 with HIV(-), were analyzed using multiplex real-time PCR which detected three infections (EBV, CMV and HHV-6)...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27777240/inherited-chromosomally-integrated-human-herpesvirus-6-and-breast-cancer
#7
Annie Gravel, Isabelle Dubuc, Angela Brooks-Wilson, Kristan J Aronson, Jacques Simard, Hector Velasquez-Garcia, John J Spinelli, Louis Flamand
Background Inherited chromosomally-integrated human herpesvirus 6 (iciHHV-6) is a condition observed in approximately 1% of the population. Whether such a genetic alteration predisposes to cancer development in currently unknown. Two studies were conducted to determine whether iciHHV-6 is associated with cancer development. Methods First, a screen of 19,597 people from the province of Quebec was conducted. A replication test, using data from a population-based case-control study of 1090 women with incident breast cancer and 1053 controls from British Columbia and Ontario was conducted...
October 24, 2016: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/27772620/cytomegalovirus-and-other-%C3%AE-herpesviruses
#8
Carlos A Q Santos
Cytomegalovirus (CMV), human herpes virus (HHV)-6, and HHV-7 are ubiquitous β-herpesviruses that can cause opportunistic infection and disease in kidney transplant recipients. Active CMV infection and disease are associated with acute allograft failure and death, and HHV-6 and HHV-7 replication are associated with CMV disease. CMV prevention strategies are used commonly after kidney transplantation, and include prophylaxis with antiviral medications and preemptive treatment upon the detection of asymptomatic viral replication in blood...
September 2016: Seminars in Nephrology
https://www.readbyqxmd.com/read/27703035/cd4-t-cells-co-expressing-cd134-ox40-harbor-significantly-increased-levels-of-hhv-6b-dna-following-umbilical-cord-blood-transplantation
#9
Joshua C Pritchett, Jaime S Green, Angela M Thomm, Konstance K Knox, Michael R Verneris, Troy C Lund
Human herpesvirus-6B (HHV-6B) commonly reactivates after umbilical cord blood transplant (UCBT) and is associated with delayed engraftment, fever, rash, and CNS dysfunction. Recently CD134 (OX40) has been implicated as a potential viral entry receptor. We evaluated CD4(+)CD134(+)/(neg-lo) and CD8(+) CD134(+)/(neg-lo) cells at day +28 after UCBT in 20 subjects with previously documented HHV-6 reactivation and persistent viremia. Analysis of CD4(+)CD134(+) cells compared to CD4(+)CD134(neg-lo) cells showed 0...
October 4, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27697585/human-herpesvirus-6-infection-following-haploidentical-transplantation-immune-recovery-and-outcome
#10
Raffaella Greco, Lara Crucitti, Maddalena Noviello, Sara Racca, Daniele Mannina, Alessandra Forcina, Francesca Lorentino, Veronica Valtolina, Serena Rolla, Roee Dvir, Mara Morelli, Fabio Giglio, Maria Chiara Barbanti, Maria Teresa Lupo Stanghellini, Chiara Oltolini, Luca Vago, Paolo Scarpellini, Andrea Assanelli, Matteo G Carrabba, Sarah Marktel, Massimo Bernardi, Consuelo Corti, Massimo Clementi, Jacopo Peccatori, Chiara Bonini, Fabio Ciceri
Human herpesvirus 6 (HHV-6) is increasingly recognized as a potentially life-threatening pathogen in allogeneic hematopoietic stem cell transplantation (alloSCT). We retrospectively evaluated 54 adult patients who developed positivity to HHV-6 after alloSCT. The median time from alloSCT to HHV-6 reactivation was 34 days. HHV-6 was present in plasma samples from 31 patients, in bone marrow (BM) of 9 patients, in bronchoalveolar lavage fluid and liver or gut biopsy specimens from 33 patients, and in cerebrospinal fluid of 7 patients...
September 30, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27694307/distribution-and-effects-of-amino-acid-changes-in-drug-resistant-%C3%AE-and-%C3%AE-herpesviruses-dna-polymerase
#11
D Topalis, S Gillemot, R Snoeck, G Andrei
Emergence of drug-resistance to all FDA-approved antiherpesvirus agents is an increasing concern in immunocompromised patients. Herpesvirus DNA polymerase (DNApol) is currently the target of nucleos(t)ide analogue-based therapy. Mutations in DNApol that confer resistance arose in immunocompromised patients infected with herpes simplex virus 1 (HSV-1) and human cytomegalovirus (HCMV), and to lesser extent in herpes simplex virus 2 (HSV-2), varicella zoster virus (VZV) and human herpesvirus 6 (HHV-6). In this review, we present distinct drug-resistant mutational profiles of herpesvirus DNApol...
November 16, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27693656/association-of-active-human-herpesvirus-6-hhv-6-infection-with-autoimmune-thyroid-gland-diseases
#12
Alina Sultanova, Maksims Cistjakovs, Sabine Gravelsina, Svetlana Chapenko, Silvija Roga, Egils Cunskis, Zaiga Nora-Krukle, Valerija Groma, Ildze Ventina, Modra Murovska
OBJECTIVES: Viral infections have been frequently cited as important environmental factors implicated in the onset of autoimmune thyroiditis (AIT). The aim of this study was to determine the involvement of HHV-6 infection in the development of autoimmune thyroiditis. METHODS: This study included 45 patients (42 female and 3 male; median age 47.00 IQR: 38.50-57.00) with histologically, laboratory and clinically confirmed autoimmune thyroiditis, as well as 30 autopsied subjects (26 women and 4 men; median age 58...
September 29, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27669362/human-herpesvirus-6-replication-predicts-cytomegalovirus-reactivation-after-allogeneic-stem-cell-transplantation-from-haploidentical-donor
#13
Roberto Crocchiolo, Laura Giordano, Andrea Rimondo, Muriel Bologna, Barbara Sarina, Lucio Morabito, Stefania Bramanti, Luca Castagna, Rossana Mineri
BACKGROUND AND OBJECTIVES: Since HHV-6 reactivation after transplant has been reported to increase the risk of CMV infection, we tested this hypothesis in the HLA-haploidentical hematopoietic stem cell transplantation setting. STUDY DESIGN: From February 2011 to October 2015, 75 patients received hematopoietic stem cell transplantation using a T-cell replete graft from a HLA-haploidentical donor at our Institution. RESULTS: Interestingly, 87% of HHV-6 reactivations were followed by a CMV reactivation, at a median of 15days between the two viruses...
September 20, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27648817/monitoring-of-human-herpesviruses-6-and-7-dna-in-saliva-samples-during-the-acute-and-convalescent-phases-of-exanthem-subitum
#14
Yuki Miyazaki, Hikaru Namba, Sadayoshi Torigoe, Masahiro Watanabe, Nobuko Yamashita, Hirohito Ogawa, Tsuneo Morishima, Masao Yamada
The amounts of the DNAs of human herpesviruses-6 (HHV-6) and -7 (HHV-7) in saliva samples were monitored during the acute and convalescent phases of exanthem subitum (ES) to elucidate the kinetics of virus shedding after ES. A total of 247 saliva samples were collected from 17 children (5 males and 12 females: 8-31 months old at onset). The monitoring period ranged from 152 to 721 days after onset, and in 15 children it was longer than 1 year. Among the 17 cases, 16 were attributed to HHV-6B, while a single case was attributed to HHV-7...
September 20, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27625312/identification-of-viruses-in-cases-of-pediatric-acute-encephalitis-and-encephalopathy-using-next-generation-sequencing
#15
Jun-Ichi Kawada, Yusuke Okuno, Yuka Torii, Ryo Okada, Satoshi Hayano, Shotaro Ando, Yasuko Kamiya, Seiji Kojima, Yoshinori Ito
Acute encephalitis/encephalopathy is a severe neurological syndrome that is occasionally associated with viral infection. Comprehensive virus detection assays are desirable because viral pathogens have not been identified in many cases. We evaluated the utility of next-generation sequencing (NGS) for detecting viruses in clinical samples of encephalitis/encephalopathy patients. We first determined the sensitivity and quantitative performance of NGS by comparing the NGS-determined number of sequences of human herpesvirus-6 (HHV-6) in clinical serum samples with the HHV-6 load measured using real-time PCR...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27598287/-human-herpes-virus-6-infection-in-an-inmunocompetent-patient-with-carbamazepine-induced-dress-syndrome
#16
Sergio Álvarez, Ignacio Delama, Lucas Navajas-Galimany, Gonzalo Eymin, M Elena Ceballos, Romina Andino-Navarrete
DRESS syndrome (drug reaction with eosinophilia and systemic symptoms) is an adverse life-threatening drug reaction characterized by a polymorphous rash associated with fever, lymphadenopathy and multiorgan involvement with eosinophilia. We present the case of an immunocompetent man with DRESS syndrome secondary to carbamazepine, that developed concomitantly meningoencephalitis caused by human herpes virus 6 (HHV-6), and a review of literature. The pathogenic role of HHV-6 in DRESS syndrome remains controversial...
June 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27595174/hippocampal-signal-abnormality-on-the-first-day-of-illness-in-acute-encephalopathy-with-biphasic-seizures-and-late-reduced-diffusion-caused-by-hhv-6-infection
#17
Takuya Matsuda, Shuichi Shimakawa, Hiromitsu Toshikawa, Mari Hatanaka, Miho Fukui, Atsushi Mori, Hiroshi Tamai
We report a 13-month-old girl who developed acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) with transient reduced diffusion in the hippocampus and anterior commissure on diffusion-weighted imaging (DWI), which was performed on the first day after febrile status epilepticus (FSE) as the initial neurological symptom of AESD. DWI just after late seizures showed high signal intensity lesions in both left hippocampus and anterior commissure, and left extratemporal and occipital subcortical white matter...
November 2016: Brain & Development
https://www.readbyqxmd.com/read/27552439/virome-characterisation-from-guthrie-cards-in-children-who-later-developed-acute-lymphoblastic-leukaemia
#18
G Bogdanovic, C Pou, M Barrientos-Somarribas, A Bjerkner, E Honkaniemi, T Allander, B Andersson, B Gustafsson
BACKGROUND: Some childhood acute lymphoblastic leukaemias (ALL) can be traced back to a prenatal origin, where a virus infection could be involved in the first pre-leukaemic clone development. The DNA virome of 95 children who later developed ALL was characterised from neonatal blood spots (NBS) using unbiased next-generation sequencing (NGS) and compared with the virome of 95 non-ALL controls. METHODS: DNA was individually extracted from the ALL-patients and controls, pooled, randomly amplified and sequenced using the Illumina MiSeq Sequencing System...
October 11, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27538995/roseolovirus-associated-encephalitis-in-immunocompetent-and-immunocompromised-individuals
#19
Joseph Ongrádi, Dharam V Ablashi, Tetsushi Yoshikawa, Balázs Stercz, Masao Ogata
The roseoloviruses, human herpesvirus (HHV)-6A, HHV-6B, and HHV-7, can cause severe encephalitis or encephalopathy. In immunocompetent children, primary HHV-6B infection is occasionally accompanied by diverse clinical forms of encephalitis. Roseolovirus coinfections with heterologous viruses and delayed primary HHV-7 infection in immunocompetent adults result in very severe neurological and generalized symptoms. Recovery from neurological sequelae is slow and sometimes incomplete. In immunocompromised patients with underlying hematological malignancies and transplantation, frequent single or simultaneous reactivation of roseoloviruses elicit severe, lethal organ dysfunctions, including damages in the limbic system, brain stem, and hippocampus...
August 18, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27535049/human-herpesvirus-6b-downregulates-expression-of-activating-ligands-during-lytic-infection-to-escape-elimination-by-natural-killer-cells
#20
Dominik Schmiedel, Julie Tai, Francesca Levi-Schaffer, Sarah Dovrat, Ofer Mandelboim
: The Herpesviridae family consists of eight viruses, most of which infect a majority of the human population. One of the less-studied members is human herpesvirus 6 (HHV-6) (Roseolovirus), which causes a mild, well-characterized childhood disease. Primary HHV-6 infection is followed by lifelong latency. Reactivation frequently occurs in immunocompromised patients, such as those suffering from HIV infection or cancer or following transplantation, and causes potentially life-threatening complications...
November 1, 2016: Journal of Virology
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