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Journal of Medical Virology

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https://www.readbyqxmd.com/read/28403538/human-papillomavirus-epstein-barr-virus-and-methylation-status-of-p16-ink4a-in-penile-cancer
#1
L A Afonso, F N Carestiato, A A Ornellas, P Ornellas, W M Rocha, T I Cordeiro, D C Lisboa, G Alves, Smb Cavalcanti
Little is known about penile carcinogenesis. The aim of this study was to evaluate the prevalence of HPV and EBV, and the methylation status of p16(ink4a) in penile cancer samples, and to contribute to the understanding of the mechanisms responsible for penile cancer development. HPV DNA was detected in 63.6% of 122 cases, with HPV16 being the most prevalent type. EBV DNA was detected in 47.7%, with EBV-1 being the most prevalent type. HPV/EBV co-infections were found in 27.3% of the cases. Hypermethylation in p16(ink4a) was detected in 64...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28402024/marburg-virus-like-particles-produced-in-insect-cells-induce-neutralizing-antibodies-in-rhesus-macaques
#2
Weiwei Gai, Xuexing Zheng, Chong Wang, Yongkun Zhao, Qi Wang, Hualei Wang, Gary Wong, Ying Xie, Haijun Wang, Zengguo Cao, Na Feng, Hang Chi, Tiecheng Wang, Yuwei Gao, Junjie Shan, Songtao Yang, Xianzhu Xia
Marburg virus (MARV), which is one of the most virulent agents in the world, causes lethal haemorrhagic fever in humans and nonhuman primates (NHPs) with a mortality rate of up to 90%. Currently, there is no effective treatment or approved vaccine for MARV for human use to control disease outbreak and spread. Virus-like particles (VLPs), which are morphologically identical to the native infectious virus particle, are efficacious as vaccines against many viruses, including human papilloma virus (HPV), porcine circovirus (PCV) type 2 and hepatitis B virus (HBV)...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28401710/threshold-value-of-liaison-xl-anti-hcv-screening-assay-predicting-positive-immunoblotting-results
#3
Massimo De Paschale, Maria Teresa Manco, Olivia Arpino, Valentina Ricucci, Alessia Paganini, Luisa Belvisi, Debora Cagnin, Teresa Cerulli, Annalisa Cianflone, Carlo Agrappi, Paola Mirri, Pierangelo Clerici
Some international guidelines recommend evaluating the need to confirm positive anti-hepatitis C virus (HCV) antibody screening results by means of a more specific antibody or molecular biology test on the basis of a screening threshold value (such as the sample signal/cut-off ratio) that can predict the positivity of additional antibody testing in at least 95% of cases. The aim of this study was to determine the threshold value of the DiaSorin LIAISON XL chemiluminescence test. Two hundred and twenty-eight routine laboratory samples that were chemiluminescence positive for anti-HCV antibodies but had different signal/cut-off ratios were assayed using immunoblotting, which indicated that 155 (68...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28401569/influences-on-viral-replication-and-sensitivity-to-gls4-a-hap-compound-of-naturally-occurring-t109-v124-mutations-in-hepatitis-b-virus-core-protein
#4
Jianghua Wang, Haiying Zhang, Yingjun Zhang, Dong Jiang, Jing Li, Siegfried Goldmann, Qingyun Ren, Ran Fei, Xueyan Wang, Lai Wei
Heteroaryldihydropyrimidine (HAP) compounds inhibit HBV replication by binding to a hydrophobic pocket at the interface between hepatitis B virus core protein (HBcAg) dimer, which interrupts capsid assembly by changing the kinetics and thermodynamics during this process. Structure biological studies have identified several amino acids in HBcAg crucial for compound binding. Here we investigated the polymorphisms of T109 and V124 amino acids in HBV sequences submitted to GenBank database. Naturally occurring T109 and V124 and/or possible compensatory mutations in neighbored amino acids were introduced into HBV-expressing plasmids...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28401565/serum-and-exosomal-mir-122-and-mir-199a-as-a-biomarker-to-predict-therapeutic-efficacy-of-hepatitis-c-patients
#5
Xiaoyang Jiao, Zhicheng Fan, Huanzhu Chen, Ping He, Yazhen Li, Qiaoxin Zhang, Changwen Ke
AIM: MicroRNA (miRNA), which has been shown to correlate with liver functions, has been proposed as a new biomarker reflecting liver injury. The aim of the study was to investigate miRNA -122 (miR-122) and mir-RNA -199a (miR-199a) as a biomarker for predicting therapeutic efficacy in hepatitis C (HepC)patients. METHODS: 47 HepC 1b patients and 16 healthy subjects were enrolled in the study. Serum and exosomal mir-RNAs and other conventional biomarkers reflecting liver function were evaluated...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390186/acute-flaccid-paralysis-surveillance-in-bosnia-and-herzegovina-recent-isolation-of-two-sabin-like-type-2-poliovirus
#6
Stefano Fontana, Gabriele Buttinelli, Stefano Fiore, Mirsada Mulaomerovic, Jela Aćimović, Concetta Amato, Roberto Delogu, Giovanni Rezza, Paola Stefanelli
The WHO Regional Commission for the Certification of Poliomyelitis Eradication has recently indicated Bosnia and Herzegovina (B&H) as a high risk country for transmission, following importation, of wild poliovirus (WPV) or circulating vaccine-derived poliovirus (cVDPV). We analyzed data on Acute Flaccid Paralysis (AFP) surveillance between 2007 to 2016, and the trend of polio immunization coverage in B&H. The majority of AFP cases was recorded in 2016 suggesting an enhancement of the AFP surveillance activities...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390175/molecular-analysis-of-hepatitis-b-virus-sub-genotypes-and-incidence-of-pres1-pres2-region-mutations-in-hbv-infected-egyptian-patients-from-mansoura
#7
Mohammed El-Mowafy, Abdelaziz Elgaml, Mohamed El-Mesery, Mohamed Elegezy
Hepatitis B virus (HBV) is one of the major causes of viral hepatitis worldwide. Despite the prevalence of HBV infection in Egypt, few studies have focused on sub-genotyping of the virus. Moreover, no studies are available regarding the mutational analysis of the preS1/preS2 region of the viral genome, or its impact on hepatocellular carcinoma (HCC) development in Egypt. In this study, we have analyzed the sub-genotypes and incidence of mutations in the preS1/preS2 region of HBV present in HBV-infected patients, from Mansoura city (located in the centre of Nile Delta region of Egypt), via partial sequencing of this specific region...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390164/-efficacy-and-safety-of-nucleoside-sparing-regimen-based-on-raltegravir-and-ritonavir-boosted-darunavir-in-hiv-1-infected-treatment-experienced-patients
#8
Elżbieta Jabłonowska, Piotr Pulik, Anna Kalinowska, Jacek Gąsiorowski, Miłosz Parczewski, Monika Bociąga-Jasik, Łukasz Pulik, Ewa Siwak, Kamila Wójcik
AIM: To assess the efficacy and tolerability of dual therapy containing raltegravir (RAL) and ritonavir boosted darunavir (DRV/r) in HIV-1-infected treatment-experienced patients.ethod. Retrospective analysis of 81 HIV-1-infected treatment-experienced patients (56 male and 25 female, 5 Polish centers) who switched to RAL/DRV/r. RESULTS: The main reasons for the introduction of dual therapy were renal dysfunction (16/81 patients - 19.8%) and virologic failure on previous regimens (15/81 patients - 18...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390162/concordance-of-hpv-dna-in-cervical-dysplasia-or-genital-warts-in-women-and-their-monogamous-long-term-male-partners
#9
Filip Rob, Ruth Tachezy, Tomáš Pichlík, Petr Škapa, Lukáš Rob, Eva Hamšíková, Jana Šmahelová, Jana Hercogová
Transmission of human papillomavirus (HPV) is a premise for development of cervical dysplasia and genital warts. This cross-sectional study assesses concordance of HPV types present in genital warts or cervical dysplasia in women and genital infection of their monogamous male partners in conjunction with seroprevalence of HPV-6,-11,-16 and -18 antibodies. Blood was taken from both women and men, as well a smear of the urogenital area of men. HPV DNA detection in women was done in fixed paraffin embedded tissues under histological control...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390158/lithium-chloride-inhibits-early-stages-of-foot-and-mouth-disease-virus-fmdv-replication-in-vitro
#10
Fu-Rong Zhao, Yin-Li Xie, Ze-Zhong Liu, Jun-Jun Shao, Shi-Fang Li, Yong-Guang Zhang, Hui-Yun Chang
Foot-and-mouth disease virus (FMDV) causes an economically important and highly contagious disease of cloven-hoofed animals such as cattle, swine, and sheep. FMD vaccine is the traditional way to protect against the disease, which can greatly reduce its occurrence. However, the use of FMD vaccines to protect early infection is limited. Therefore, the alternative strategy of applying antiviral agents is required to control the spread of FMDV in outbreak situations. As previously reported, LiCl has obviously inhibition effects on a variety of viruses such as transmissible gastroenteritis virus (TGEV), infectious bronchitis coronavirus (IBV), and pseudorabies herpesvirus and EV-A71 virus...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28390142/genotypic-diversity-of-anogenital-human-papillomavirus-in-women-attending-cervical-cancer-screening-in-harare-zimbabwe
#11
Racheal S Dube Mandishora, Irene Kraus Christiansen, Nyasha Chin'ombe, Kerina Duri, Bernard Ngara, Trine B Rounge, Roger Meisal, Ole Herman Ambur, Joel M Palefsky, Babill Stray-Pedersen, Zvavahera M Chirenje
BACKGROUND: Although anogenital cancers have been on a gradual rise in developing countries in the past few decades, they have been understudied. OBJECTIVE: To investigate genotypic diversity of anogenital HPV amongst women reporting for routine cervical cancer screening in Harare in Zimbabwe. METHODS: A cross sectional study that enrolled 144 women ≥18 years from a cervical cancer-screening clinic was performed. Each woman provided a self-collected cervico-vaginal swab (VS) and a clinician collected anal swab (CCAS)...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28369961/zika-virus-a-public-health-threat
#12
REVIEW
Shashi Sharma, Kundan Tandel, P K Dash, M M Parida
The resurgence of Zika virus as public health emergency of an international concern with increased incidence of microcephaly has drawn attention of scientific community for its detailed understanding with regard to virus evolution, epidemiology, geographical spread, pathogenesis, etc. The scope of the present review is to discuss the detailed updated information in respect of Zika virus evolution since its inception. This article is protected by copyright. All rights reserved.
April 1, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28370302/comparative-genetic-variability-in-hiv-1-subtype-c-nef-gene-in-early-age-groups-of-infants
#13
Mohammad Husain, Uma Sharma, Poonam Gupta, Megha Singhal, Supriya Singh, Sunil Gupta, S Venkatesh, Arvind Rai
Targeting properties of vertically transmitted viruses in early infancy is important to understand disease progression. To investigate genotypic characteristics of transmitted viruses, blood samples were obtained from infants aged 6 weeks-18 months, categorized in two age groups, acute (≤6 months) and early (>6-18 months). Nef having an important role in pathogenesis was selected to explore the viral characteristics. A total of 57 PCR positive samples, amplified by nef gene were sequenced. Analysis showed that 50 sequences belonged to subtype C...
March 31, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28370103/screening-for-potential-susceptibility-to-rubella-in-an-antenatal-population-a-multivariate-analysis
#14
Luke Blagdon Snell, Colette Smith, Shelley Chaytor, Kathryn McRae, Mauli Patel, Paul Griffiths
Rubella causes disease in the fetus. Immunity to rubella is therefore routinely screened in pregnant women. In this retrospective observational study, we assessed the levels of potential susceptibility to rubella in the population of a north London antenatal clinic. Risk factors for potential susceptibility to rubella and changes in potential susceptibility to rubella over time were studied. Almost all women were screened for potential susceptibility to rubella (99.8%). The majority were predicted to be immune (96...
March 31, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28369997/gene-expression-profile-after-knockdown-of-usp18-in-hepg2-2-15-cells
#15
Lin Li, Qing-Song Lei, Ling-Na Kong, Shu-Jun Zhang, Bo Qin
In our previous work, we found that the expression of ubiquitin-specific protease 18 (USP18), also known as UBP43, is associated with the efficiency of interferon alpha (IFN-α) treatment in patients with chronic hepatitis B (CHB). To elucidate the influence of USP18 on hepatitis B virus (HBV) replication and the mechanism of this activity, we silenced USP18 by introducing short hairpin RNA (shRNA) into Hepg2.2.15 cells. To identify the changed genes and pathways in Hepg2.2.15-shRNA-USP18 cells, we performed a microarray gene expression analysis to compare the Hepg2...
March 31, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28370222/ombitasvir-paritaprevir-ritonavir-dasabuvir%C3%A2-%C3%A2-%C3%A2-ribavirin-is-safe-and-effective-in-hcv-infected-patients-in-a-real-life-cohort-from-latin-america
#16
M Mendizabal, L Haddad, P E Gallardo, A Ferrada, A Soza, R Adrover, E Aravena, J P Roblero, J Prieto, C Vujacich, G Romero, A Muñoz, M M Anders, N Hernández, D Coccozella, F Gruz, V Reggiardo, A E Ruf, A Varón, M Cartier, R Pérez Ravier, E Ridruejo, M Peralta, D Poncino, J Vorobioff, G Aballay Soteras, M O Y Silva
Information about the use of ombitasvir/paritaprevir/ritonavir/dasabuvir ± ribavirin (OBV/PTV/r/DSV ± RBV) in real-clinical practice in Latin America is scarce. We aimed to confirm safety and effectiveness of OBV/PTV/r/DSV ± RBV therapy in real-world setting. We analyzed a cohort of patients with genotype 1 infection treated with OBV/PTV/r/DSV ± RBV. Data on demographics, clinical features, safety and virological response were retrospectively collected from 21 centers in Latin America. A total of 96 patients received OBV/PTV/r/DSV, associated with RBV in 68% of the cases...
March 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28370221/molecular-analysis-of-norovirus-in-specimens-from-children-enrolled-in-a-1982-1986-study-in-bel%C3%A3-m-brazil-a-community-based-longitudinal-study
#17
Jones Anderson Monteiro Siqueira, Edivaldo Costa Sousa Júnior, Alexandre da Costa Linhares, Yvone Benchimol Gabbay
Fecal specimens were collected during a longitudinal, community-based study in the city of Belém, North Brazil, that was conducted over 3 years (October 1982 to March 1986), in which 20 children were included from birth to 3 years of age. A total of 229 fecal samples were screened by real time RT-PCR targeting the junction region (ORF 1/2) of the norovirus (NoV) genome. NoV-positive samples were subjected to PCR and sequencing of the viral polymerase (ORF1) and viral protein 1 (VP1) genes (ORF2). The junction region was also sequenced to assess for recombination when ORF1 and ORF2 genotyping results were dissimilar...
March 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28370191/role-of-apob-516c-t-promoter-gene-polymorphism-in-the-risk-of-hepatitis-c-virus-infection-in-egyptian-patients-and-in-gender-susceptibility
#18
Rania H Khalifa, Dalia A Labib, Mohamed A Kamel, Rasha Mohamad Hosny Shahin, Dina M Rasheed Bahgat, Nermine Magdi Riad, Engy El Khateeb, Amr M El-Deeb, Marwa Hassan
At least 1 in 10 of the Egyptian population aged 15 to 59 is burdened with hepatitis C virus (HCV) infection, stamping Egypt the highest country harboring HCV worldwide. Considerable evidence supported the involvement of host genetic factors in the pathogenesis of HCV and the possibility of implementation in target therapies. ApoB gene polymorphisms are postulated to affect the susceptibility of HCV infection. Hence, we aimed to evaluate the relationship between ApoB-516C/T promoter gene polymorphism and HCV infection in a cohort of Egyptian patients and to explore whether higher levels of low-density lipoprotein (LDL) might compete with lipoviral particles (LVP) in the binding to LDL receptor (LDLR), thus escaping infection...
March 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28332201/identification-of-novel-variants-in-hla-class-ii-region-related-to-hla-dpb1-expression-and-disease-progression-in-patients-with-chronic-hepatitis-c
#19
Katsushi Hiramatsu, Hidetaka Matsuda, Tomoyuki Nemoto, Takuto Nosaka, Yasushi Saito, Tatsushi Naito, Kazuto Takahashi, Kazuya Ofuji, Masahiro Ohtani, Hiroyuki Suto, Toshihiro Yasuda, Yukio Hida, Hideki Kimura, Yoshihiro Soya, Yasunari Nakamoto
BACKGROUND: Recent genome-wide studies have demonstrated that HLA class II gene may play an important role in viral hepatitis. We studied genetic polymorphism and RNA expression of HLA class II genes in HCV-related liver diseases. METHODS: The study was performed in groups consisting of 24 patients with HCV-related liver disease (12 of persistent normal ALT: PNALT group and 12 of advanced liver disease: ALD group) and 26 patients without HCV infection (control group)...
March 22, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28322457/declining-antibody-levels-after-hepatitis-b-vaccination-in-down-syndrome-a-need-for-booster-vaccination
#20
N B Eijsvoogel, M I Hollegien, L A Bok, A Derksen-Lubsen, F Dikken, A C A P Leenders, A Pijning, E Post, M Wojciechowski, M Hilbink, E de Vries
We determined the anti-HBs titer in 227 children of all ages with Down syndrome (DS). Only 48.1% (95% CI: 35.1-61.3) of the DS children aged 7-10 years and 31.9% (95% CI: 22.1-43.6) of the DS children aged >10 years had a protective anti-HBs titer (≥10 IU/l). The geometric mean anti-HBs titer was significantly lower in the DS children; this suggests booster vaccination for HBV may be needed. This article is protected by copyright. All rights reserved.
March 21, 2017: Journal of Medical Virology
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