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Journal of Medical Virology

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https://www.readbyqxmd.com/read/28628220/importance-of-endothelial-dysfunction-biomarkers-in-patients-with-crimean-congo-hemorrhagic-fever
#1
Mustafa Arslan, Gürdal Yilmaz, Ahmet Mentese, Hülya Yilmaz, S Caner Karahan, Iftihar Koksal
BACKGROUND: The pathogenesis of the Crimean-Congo hemorrhagic fever (CCHF) and the cause of the hemorrhage are not yet fully understood. However, the endothelium plays a key role in the pathogenesis. The purpose of this study was to investigate endothelial dysfunction markers [asymmetrical dimethyl arginine(ADMA), endothelin 1(ET-1), thrombomodulin(TM), von Willebrand factor(vWf) and intercellular adhesion molecule(ICAM-1)] in serum in patients with CCHF and their associations with hemorrhage...
June 19, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28621437/hepatitis-a-virus-strains-circulating-during-1997-2015-in-campania-a-southern-italy-region-with-periodic-outbreaks
#2
Angela Costantino, Nicola Coppola, Enea Spada, Roberto Bruni, Stefania Taffon, Michele Equestre, Cinzia Marcantonio, Caterina Sagnelli, Chiara Dell'Isola, Grazia Tosone, Silvia Mascolo, Evangelista Sagnelli, Anna Rita Ciccaglione
In Italy the incidence of hepatitis A has progressively declined over the last 30 years, though not homogeneously throughout the country. In Campania, Southern Italy, high annual incidence rates have been reported and several periodic outbreaks have occurred.o investigate the phylogenetic and epidemiologic relationships among HAV strains circulating in Campania over the period 1997-2015, 87 hepatitis A cases were investigated. The most frequent risk factor was the consumption of raw/undercooked shellfish (75/87, 86...
June 16, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28618019/predictors-of-histological-indication-for-treatment-in-hbeag-negative-chronic-hbv-infection
#3
Sener Barut, Ümit Gemici, Ferdi Güneş, Osman Demir, Fazilet Duygu
In this study, we evaluated the relationship of hepatitis B virus (HBV) DNA levels with liver histology and various other liver related parameters and the predictors of histologically active liver disease requiring treatment (Histological activity ≥6 and/or grade≥2 by Ishak's classification) in patients with HBeAg negative chronic HBV infection. Demographic data, laboratory findings and liver histology findings of patients with no clinical cirrhosis who underwent liver biopsy considering HBeAg negative chronic hepatitis (HBV DNA > 2000 IU/ml) were analysed...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28618003/a-multi-template-multiplex-pcr-assay-for-hepatitis-b-virus-and-human-%C3%AE-globin
#4
Oluwapelumi O Adeyemi, Morgan R Herod, Femi Oladiji, Yisa M Fakunle, Abiola S Babatunde, Olajide O Agbede
The Hepatitis B surface antigen (HBsAg) is the hallmark of HBV infection. Detection of antibodies to HBs and the core (i.e. HBsAg and HBcAb) are primary serological algorithms in the laboratory diagnosis of HBV. Detection of HBsAg DNA is an important supplement to serological diagnosis especially in clinical cases. Simultaneous amplification of internal cellular controls is a good indicator of sample quality. Human β-globin is a well characterised housekeeping gene (HKG) that is often applied as internal controls (IC) in molecular diagnosis...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28617968/diversity-of-human-herpesvirus-8-genotypes-in-patients-with-aids-and-non-aids-associated-kaposi-s-sarcoma-castleman-s-disease-and-primary-effusion-lymphoma-in-argentina
#5
Celeste Luján Pérez, Mónica I Tous
HHV-8 genotypes are distributed heterogeneously worldwide. The variable K1 gene and the conserved ORF26E region serve to genotype. The aim of the study was to characterize HHV-8 isolates from patients with AIDS, classical, and iatrogenic KS, primary effusion lymphoma and Castleman's disease and one organ donor from Argentina by analysis of ORFK1 and ORF26E regions. DNA was extracted from fresh or paraffin embedded biopsies, blood and saliva samples and submitted to HHV-8 PCR. Phylogenetic analyses of ORFK1 showed that subtypes C (C1, C2 and C3), B1 and A (A1, A2 and A3) were present in 70...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28617964/prevalence-and-genetic-features-of-rabbit-hepatitis-e-virus-in-korea
#6
Hee-Seop Ahn, Byung-Joo Park, Sang-Hoon Han, Yong-Hyun Kim, Dong-Hwi Kim, Bo-Sook Kim, Joong-Bok Lee, Seung-Yong Park, Chang-Seon Song, Sang-Won Lee, In-Soo Choi
Hepatitis caused by hepatitis E virus (HEV) is a public health concern worldwide. HEV strains have been isolated from several animal species, some of which induce zoonosis. Recently, the isolation of HEV from rabbits was reported. Here, the partial capsid gene (320 bp) of HEV was detected in rabbit feces via reverse transcriptase-polymerase chain reaction (RT-PCR). Rabbit HEV was found in two of six rabbit farms and 17 of 264 rabbit fecal samples (6.4%). A phylogenetic analysis of the partial capsid gene classified the 17 HEV isolates into the putative rabbit HEV clade...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28617961/interlaboratory-quality-control-of-total-hiv-1-dna-load-measurement-for-multicenter-reservoir-studies
#7
Pierre Gantner, Adeline Mélard, Florence Damond, Constance Delaugerre, Julia Dina, Marie Gueudin, Anne Maillard, Karine Sauné, Audrey Rodallec, Edouard Tuaillon, Jean-Christophe Plantier, Christine Rouzioux, Véronique Avettand-Fenoel
BACKGROUND: Viral reservoirs represent an important barrier to HIV cure. Accurate markers of HIV reservoirs are needed to develop multicenter studies. The aim of this multicenter quality control (QC) was to evaluate the inter-laboratory reproducibility of total HIV-1-DNA quantification. METHODS: Ten laboratories of the ANRS-AC11 working group participated by quantifying HIV-DNA with a real-time qPCR assay (Biocentric) in 4 samples (QCMD). RESULTS: Good reproducibility was found between laboratories (standard deviation ≤ 0...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28617960/low-prevalence-of-igg-antibodies-against-antigens-of-hev-genotypes-1-and-3-in-women-with-a-high-risk-pregnancy
#8
Baptista-González Héctor, Trueba-Gómez Rocío, Rosenfeld-Mann Fanny, Roque-Álvarez Elsa, Méndez-Sánchez Nahúm
INTRODUCTION: The aim of the study was to assess whether high-risk pregnant women have a higher prevalence of HEV during the perinatal period. MATERIAL AND METHODS: This was a cross-sectional study of 428 patients: Group 1, 127 women with a high-risk pregnancy; Group 2, 97 asymptomatic people with reactivity to HCV or HBV; Group 3, 94 patients with clinical symptoms suggestive of HEV infection; and Group 4, 110 healthy blood donors from an urban area of Mexico City...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28608566/influence-of-universal-hbv-vaccination-on-chronic-hbv-infection-in-italy-results-of-a-cross-sectional-multicentre-study
#9
Evangelista Sagnelli, Tommaso Stroffolini, Caterina Sagnelli, Filomena Morisco, Nicola Coppola, Antonina Smedile, Mariantonietta Pisaturo, Guido Colloredo, Sergio Babudieri, Anna Licata, Giuseppina Brancaccio, Angelo Andriulli, Piero Luigi Almasio, Giovani Battista Gaeta, Bruno Cacopardo, Guido Colloredo, Nicola Coppola, Massimo De Luca, Caterina Furlan, Mario Pirisi, Floriano Rosina, Teresa Santantonio
Background and Aim The universal hepatitis B vaccination for infants and 12-year-old adolescents (the latter limited to the first 12 years of application) was launched in Italy in 1991. Twenty-three years later we evaluated the impact of the vaccination campaign on the burden of HBsAg-positive chronic liver diseases (CLD). Material and Methods 513 HBsAg-positive chronic carriers referring to 16 Italian liver units were investigated and compared with HBsAg carriers enrolled in previous surveys. Results The proportion of inactive carriers decreased from 20...
June 13, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28590068/comparison-of-hiv-1-drug-resistance-genotyping-by-ultra-deep-sequencing-and-sanger-sequencing-using-clinical-samples
#10
Mary-Anne Trabaud, Vinca Icard, Christophe Ramière, Jean-Claude Tardy, Caroline Scholtes, Patrice André
Sanger population sequencing (SPS) is the reference technique to monitor HIV-1-infected patients' therapy. Ultra-deep sequencing (UDS), which allows quantitative detection of drug resistance mutations, may be an alternative method. The study aimed to compare reproducibility and predictions of UDS versus SPS in a routine setting. A control containing low-abundance variants was repeatedly tested and clinical plasma samples from 100 patients were prospectively assayed by SPS and UDS using the Roche 454 system...
June 7, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28577316/seroprevalence-and-risk-factors-of-hepatitis-e-virus-infection-among-the-korean-manchu-mongol-and-han-ethnic-groups-in-eastern-and-northeastern-china
#11
Yanan Cai, Si-Yuan Qin, Aidong Qian, Peng Xu, Ying-Tian Xu, Lin-Hong Xie, Quan Zhao, Xiao-Xuan Zhang
Hepatitis E virus (HEV) infection is a serious public health concern in developing countries. China is regarded as an HEV-endemic area, but epidemiological data for HEV among different nationalities is limited. This study was conducted to estimate the seroprevalence and risk factors of HEV infection in Koreans (n = 520), Manchus (n = 303), Mongols (n = 217) and Hans (n = 802) in eastern and northeastern China between 2013 to 2015. A total of 366 (19.87%) out of 1842 samples were seropositive for IgG or IgM HEV-antibodies detected by enzyme-linked immunoassays...
June 3, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28574589/enterovirus-genotypes-among-patients-with-severe-acute-respiratory-illness-influenza-like-illness-and-asymptomatic-individuals-in-south-africa-2012-2014
#12
Orienka Hellferscee, Stefano Tempia, Sibongile Walaza, Ebrahim Variava, Halima Dawood, Nicole Wolter, Shabir A Madhi, Mignon du Plessis, Cheryl Cohen, Florette K Treurnicht
Enteroviruses can cause outbreaks of severe acute respiratory illness (SARI) and EV-A, -B, -C and -D species have different pathogenic profiles and circulation patterns. We aimed to characterize and determine the prevalence of enterovirus genotypes among South African patients with respiratory illness and controls during June 2012 to July 2014. Syndromic SARI and influenza-like illness (ILI) surveillance was performed at two sentinel sites. At each site nasopharyngeal/oropharyngeal specimens were collected from SARI and ILI patients as well as controls...
June 2, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28561377/country-wide-seroprevalence-studies-on-crimean-congo-hemorrhagic-fever-and-hantavirus-infections-in-general-population-of-bulgaria
#13
Iva Christova, Elitsa Panayotova, Iva Trifonova, Evgenia Taseva, Teodora Hristova, Vladislava Ivanova
Crimean-Congo hemorrhagic fever (CCHF) and hantavirus infections are the two viral hemorrhagic fevers spread in Europe. To test actual circulation of CCHF virus (CCHFV) and hantaviruses in Bulgaria, we conducted country-wide seroepidemiological studies. Serum samples were collected prospectively from 1500 residents of all 28 districts in Bulgaria. CCHFV seroprevalence of 3.7% was revealed. Anamnesis for tick bites, contact with livestock, age over 40 years and residency in Haskovo district were found as risk factors...
May 31, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28561372/mxa-is-a-positive-regulator-of-type-i-ifn-signaling-in-hcv-infection
#14
Xuezhen Shi, Baihai Jiao, Yanzhao Chen, Shilin Li, Limin Chen
Type I interferons (IFNs) are a family of primordial cytokines that respond to various pathogen infections including Hepatitis C virus (HCV). Type I IFNs signal through Jak/STAT pathway leading to the production of a few hundred interferon stimulated genes (ISGs). The aim of this study was to explore the role of one of these ISGs, MxA in HCV infection and type I IFN production. Plasmid encoding MxA was cloned into PcDNA3.1-3 × tag vector and MxA expression was confirmed both at mRNA (RT-PCR) and protein (Western blot, WB) levels...
May 31, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28547892/hospital-acquired-rotavirus-and-norovirus-acute-gastroenteritis-in-a-pediatric-unit-in-2014-2015
#15
D Valentini, G Ianiro, I Di Bartolo, C Di Camillo, E Boccuzzi, A C Vittucci, F M Ruggeri, M Monini
The occurrence of hospital-acquired acute gastroenteritis (AGE) is a major concern for public health. RotavirusA (RVA) and norovirus (NoV) are common causes of viral AGE in the pediatric population, and their role in nosocomial infections has been proven, remaining poorly investigated. To investigate RVA and NoV in hospital-acquired AGE, 55 stool samples from children with nosocomial AGE were collected between May 2014 and May 2015. To evaluate virus spreading routes, 51 environmental swabs were collected from staff and patients' rooms...
May 26, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28547880/the-possible-role-of-ccr5%C3%AE-32-mutation-in-crimean-congo-hemorrhagic-fever-infection
#16
Aydin Rustemoglu, Duygu Ekinci, Ayşe Feyda Nursal, Sener Barut, Fazilet Duygu, Özgür Günal
Crimean-Congo hemorrhagic fever infection (CCHF) is a viral zoonosis. The pathogenesis of this disease has not been established so far, however cytokines account for its progression and outcome. The aim of the present study is to investigate the association between chemokine receptor 5 (CCR5) gene Δ32 mutation and pathogenity, severity, and mortality of CCHF. This case-control study included 133 CCHF patients diagnosed by detection of CCHV RNA positivity and 97 healthy control subjects. CCR5 gene Δ32 mutation analyzed by polymerase chain reaction (PCR) method...
May 26, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28547808/cytokine-response-in-crimean-congo-hemorrhagic-fever-virus-infection
#17
Önder Ergönül, Ceren Şeref, Şebnem Eren, Aysel Çelikbaş, Nurcan Baykam, Başak Dokuzoğuz, Mehmet Gönen, Füsun Can
BACKGROUND: We described the predictive role of cytokines in fatality of Crimean Congo Hemorrhagic Fever Virus (CCHFV) infection by using daily clinical sera samples. METHODS: Consequent serum samples of the selected patients in different severity groups and healthy controls were examined by using human cytokine 17-plex assay. RESULTS: We included 12(23%) mild, 30(58%) moderate, 10(19%) severe patients, and 10 healthy volunteers. The mean age of the patients was 52 (sd 15), 52% were female...
May 26, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28543733/development-of-real-time-rt-pcr-assays-for-detection-of-three-classes-of-hhv-6a-gene-transcripts
#18
Masaru Ihira, Akiko Urashima, Hiroki Miura, Fumihiko Hattori, Yoshiki Kawamura, Ken Sugata, Tetsushi Yoshikawa
Human herpesvirus 6 (HHV-6), a member of the betaherpesvirus family, has two distinct species: HHV-6A and HHV-6B. HHV-6B real-time reverse transcription polymerase chain reaction (RT-PCR) has been used to distinguish between active and latent viral infection. In this study, we developed a real-time RT-PCR assay to detect HHV-6A-specific transcripts and evaluated its reliability for analysis of clinical samples. To develop HHV-6A-specific real-time RT-PCR assays, three different classes of gene transcripts (immediate early: U90; early: U12; and late: U100) were selected as targets...
May 23, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28543390/the-effect-of-ebv-on-wif1-nlk-and-apc-gene-methylation-and-expression-in-gastric-carcinoma-and-nasopharyngeal-cancer
#19
Zhenzhen Zhao, Wen Liu, Jincheng Liu, Jiayi Wang, Bing Luo
Epstein-Barr virus (EBV) is an important DNA tumor virus that is associated with approximately 10% of gastric carcinomas and 99% of nasopharyngeal cancers. DNA methylation and microRNAs (miRNAs) are the most studied epigenetic mechanisms that can prompt disease susceptibility. This study aimed to detect the effect of EBV on Wnt inhibitory factor 1 (WIF1), Nemo-like kinase (NLK), and adenomatous polyposis coli (APC) gene methylation and expression in gastric carcinoma and nasopharyngeal cancer. METHODS: The WIF1, NLK, and APC gene mRNA expression levels were measured by real-time quantitative RT-PCR in four EBV-positive cell lines and four EBV-negative cell lines...
May 23, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28543299/low-occurrence-of-hbsag-but-high-frequency-of-transient-occult-hbv-infection-in-vaccinated-and-hbig-administered-infants-born-to-hbsag-positive-mothers
#20
Shan Zhou, Tingting Li, Jean-Pierre Allain, Bin Zhou, Yuming Zhang, Mei Zhong, Yongshui Fu, Chengyao Li
The status of chronic and occult HBV infection (OBI) in neonatal hepatitis B vaccine and immunoglobulin (HBIG) vaccinated infants born to HBsAg+ mothers was investigated at a major hospital in China. Seventy-seven and 15 blood samples were collected in first or second follow-up detection from the vaccinated babies aged 3 to 36 months born to 43 HBsAg+ or plus 25 HBeAg+ mothers. HBV infection was analyzed between the paired baby and mother by serology and DNA analysis. Among 77 children born to 68 HBsAg+ mothers, 3...
May 23, 2017: Journal of Medical Virology
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