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https://www.readbyqxmd.com/read/28339951/characterization-of-a-hypervirulent-fowl-adenovirus-4-with-the-novel-genotype-newly-prevalent-in-china-and-establishment-of-reproduction-infection-model-of-hydropericardium-syndrome-in-chickens
#1
Q Pan, L Liu, Y Gao, C Liu, X Qi, Y Zhang, Y Wang, K Li, L Gao, X Wang, H Cui
Severe hydropericardium syndrome (HPS) has been present in layers in the northeast of China since June 2015, with mortality rates varying from 30 to 90%. Dead layers had severe hydropericardium with pericardial volumes of 5 to 20 mL, as well as inclusion body hepatitis. Laboratory investigations led to the isolation of a fowl adenovirus strain, HLJFAd15, from the liver tissue of dead layers. Natural deletions of ORF19 and ORF27 were found in this clinical strain by complete genome sequencing, which was identified with the novel genotype recently prevalent in China...
March 4, 2017: Poultry Science
https://www.readbyqxmd.com/read/28335547/genomic-loads-and-genotypes-of-respiratory-syncytial-virus-viral-factors-during-lower-respiratory-tract-infection-in-chilean-hospitalized-infants
#2
Yazmín Espinosa, Camila San Martín, Alejandro A Torres, Mauricio J Farfán, Juan P Torres, Vasanthi Avadhanula, Pedro A Piedra, Lorena I Tapia
The clinical impact of viral factors (types and viral loads) during respiratory syncytial virus (RSV) infection is still controversial, especially regarding newly described genotypes. In this study, infants with RSV bronchiolitis were recruited to describe the association of these viral factors with severity of infection. RSV antigenic types, genotypes, and viral loads were determined from hospitalized patients at Hospital Roberto del Río, Santiago, Chile. Cases were characterized by demographic and clinical information, including days of lower respiratory symptoms and severity...
March 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335454/porcine-rotaviruses-epidemiology-immune-responses-and-control-strategies
#3
REVIEW
Anastasia N Vlasova, Joshua O Amimo, Linda J Saif
Rotaviruses (RVs) are a major cause of acute viral gastroenteritis in young animals and children worldwide. Immunocompetent adults of different species become resistant to clinical disease due to post-infection immunity, immune system maturation and gut physiological changes. Of the 9 RV genogroups (A-I), RV A, B, and C (RVA, RVB, and RVC, respectively) are associated with diarrhea in piglets. Although discovered decades ago, porcine genogroup E RVs (RVE) are uncommon and their pathogenesis is not studied well...
March 18, 2017: Viruses
https://www.readbyqxmd.com/read/28333285/therapeutic-drug-monitoring-of-boosted-pis-in-hiv-positive-patients-undetectable-plasma-concentrations-and-risk-of-virological-failure
#4
A Calcagno, N Pagani, A Ariaudo, G Arduino, C Carcieri, A D'Avolio, L Marinaro, M C Tettoni, L Trentini, G Di Perri, S Bonora
Background: Therapeutic drug monitoring (TDM) of antiretroviral drugs is performed in selected HIV-positive patients. The aim of this study was to estimate the prevalence of undetectable plasma concentrations of ritonavir and boosted PIs and to evaluate the association between those and the 48 week risk of virological failure. Methods: A TDM registry study and a retrospective follow-up study were conducted. Plasma concentrations were measured through validated methods...
March 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333232/prevalence-of-hiv-1-drug-resistance-in-treated-patients-with-viral-load-50%C3%A2-copies-ml-a-2014-french-nationwide-study
#5
L Assoumou, C Charpentier, P Recordon-Pinson, M Grudé, C Pallier, L Morand-Joubert, S Fafi-Kremer, A Krivine, B Montes, V Ferré, M Bouvier-Alias, J-C Plantier, J Izopet, M-A Trabaud, S Yerly, J Dufayard, C Alloui, L Courdavault, H Le Guillou-Guillemette, A Maillard, C Amiel, A Vabret, C Roussel, S Vallet, J Guinard, A Mirand, A Beby-Defaux, F Barin, A Allardet-Servent, R Ait-Namane, M Wirden, C Delaugerre, V Calvez, M-L Chaix, D Descamps, S Reigadas
Background: Surveillance of HIV-1 resistance in treated patients with a detectable viral load (VL) is important to monitor, in order to assess the risk of spread of resistant viruses and to determine the proportion of patients who need new antiretroviral drugs with minimal cross-resistance. Methods: The HIV-1 protease and reverse transcriptase (RT) and integrase genes were sequenced in plasma samples from 782 consecutive patients on failing antiretroviral regimens, seen in 37 specialized centres in 2014...
February 25, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333153/a-novel-inhibitor-idpp-interferes-with-entry-and-egress-of-hcv-by-targeting-glycoprotein-e1-in-a-genotype-specific-manner
#6
Myungeun Lee, Jaewon Yang, Eunji Jo, Ji-Young Lee, Hee-Young Kim, Ralf Bartenschlager, Eui-Cheol Shin, Yong-Soo Bae, Marc P Windisch
Despite recent advances in curing chronic hepatitis C (CHC), the high economic burden to therapy, viral drug resistance, difficult to treat hepatitis C virus (HCV) genotypes and patient groups are still of concern. To address this unmet medical needs, we devised strategies to identify novel viral interventions through target-free high-throughput screening of small molecules utilizing a phenotypic-based HCV infection assay. Thereby, a very potent (EC50 46 ± 26 pM) iminodipyridinopyrimidine (IDPP) drug candidate was selected, and confirmed in primary human hepatocytes (EC50 0...
March 23, 2017: Scientific Reports
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
#7
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/28329053/sofosbuvir-plus-ribavirin-without-interferon-for-treatment-of-acute-hepatitis-c-virus-infection-in-hiv-1-infected-individuals-swift-c
#8
Susanna Naggie, Kristen M Marks, Michael Hughes, Daniel S Fierer, Christine Macbrayne, Arthur Kim, Kimberly Hollabaugh, Jhoanna Roa, Bill Symonds, Diana M Brainard, John G McHutchison, Marion G Peters, Jennifer J Kiser, Raymond Chung
Background.: Historically, acute hepatitis C virus (HCV) infection was treated with shorter durations of interferon-containing therapies. In the era of direct-acting antivirals (DAAs), it is unclear whether the efficacy of treatment achieved in chronic infection can be maintained with abbreviated courses of therapy during the acute phase. Methods.: The sofosbuvir-containing regimens without interferon for treatment of acute HCV in HIV-1 infected individuals (SWIFT-C) is an open-label, 2-cohort clinical trial in which the first cohort assessed for the safety and efficacy of 12 weeks of sofosbuvir plus ribavirin for the treatment of acute HCV infection in participants with chronic human immunodeficiency virus type 1 (HIV-1) infection...
February 27, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328941/cynomolgus-monkeys-are-successfully-and-persistently-infected-with-hepatitis-e-virus-genotype-3-hev-3-after-long-term-immunosuppressive-therapy
#9
Noemi Rovaris Gardinali, Juliana Rodrigues Guimarães, Juliana Gil Melgaço, Yohan Britto Kevorkian, Fernanda de Oliveira Bottino, Yasmine Rangel Vieira, Aline Campos de Azevedo da Silva, Douglas Pereira Pinto, Laís Bastos da Fonseca, Leandro Schiavo Vilhena, Edilson Uiechi, Maria Cristina Carlan da Silva, Julio Moran, Renato Sérgio Marchevsky, Oswaldo Gonçalves Cruz, Rodrigo Alejandro Arellano Otonel, Amauri Alcindo Alfieri, Jaqueline Mendes de Oliveira, Ana Maria Coimbra Gaspar, Marcelo Alves Pinto
Epidemiological studies found that hepatitis E virus genotype 3 (HEV-3) infection was associated with chronic hepatitis and cirrhosis in immunocompromised patients. Our study aimed to investigate the relationship between the host immunosuppressive status and the occurrence of HEV-related chronic hepatitis. Here we describe a successful experimental study, using cynomolgus monkeys previously treated with tacrolimus, a potent calcineurin inhibitor immunosuppressant, and infected with a Brazilian HEV-3 strain isolated from naturally infected pigs...
2017: PloS One
https://www.readbyqxmd.com/read/28327951/hpv16-dna-and-integration-in-normal-and-malignant-epithelium-implications-for-the-etiology-of-laryngeal-squamous-cell-carcinoma
#10
X Chen, L Gao, E M Sturgis, Z Liang, Y Zhu, X Xia, X Zhu, X Chen, G Li, Z Gao
Background: Molecular evidence suggests that human papillomavirus (HPV) has a role in the etiology of oropharyngeal squamous cell carcinoma. However, the role of HPV in laryngeal squamous cell carcinoma (LSCC) is unclear. Patients and Methods: We conducted a case-control study using tumor tissue specimens from 300 LSCC patients and vocal cord polyp specimens from 300 cancer-free controls. HPV genotype, HPV16 viral load and viral integration status, and p16 expression were determined...
January 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327790/association-of-nr1i2-gene-polymorphisms-and-time-of-progression-to-aids
#11
Rúbia Marília de Medeiros, Carolina Fialho Menti, Jéssica Louise Benelli, Maria Cristina Cotta Matte, Marineide Gonçalves de Melo, Sabrina Esteves de Matos Almeida, Marilu Fiegenbaum
BACKGROUND: The time of progression towards AIDS can vary greatly among seropositive patients, and may be associated with host genetic variation. The NR1I2 (PXR) gene, a ligand-activated transcription factor, regulates the transcription immune pathway genes and can therefore be targets of viral replication mechanisms influencing time of progression to AIDS. OBJECTIVE: To verify the association of single nucleotide polymorphisms (SNPs) rs3814057, rs6785049, rs7643645, and rs2461817 in the NR1I2 (PXR) gene with progression to AIDS in HIV-1 infected patients...
April 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28327559/quasispecies-of-hepatitis-c-virus-participate-in-cell-specific-infectivity
#12
Takasuke Fukuhara, Satomi Yamamoto, Chikako Ono, Shota Nakamura, Daisuke Motooka, Hiroyuki Mori, Takeshi Kurihara, Asuka Sato, Tomokazu Tamura, Takashi Motomura, Toru Okamoto, Michio Imamura, Toru Ikegami, Tomoharu Yoshizumi, Yuji Soejima, Yoshihiko Maehara, Kazuaki Chayama, Yoshiharu Matsuura
It is well documented that a variety of viral quasispecies are found in the patients with chronic infection of hepatitis C virus (HCV). However, the significance of quasispecies in the specific infectivity to individual cell types remains unknown. In the present study, we analyzed the role of quasispecies of the genotype 2a clone, JFH1 (HCVcc), in specific infectivity to the hepatic cell lines, Huh7.5.1 and Hep3B. HCV RNA was electroporated into Huh7.5.1 cells and Hep3B/miR-122 cells expressing miR-122 at a high level...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326486/genetic-characterization-of-porcine-circovirus-type-2-in-captive-wild-boars-in-southern-brazil
#13
José Paulo Hiroji Sato, Danielle Gava, Rejane Schaefer, Maurício Egídio Cantão, Janice Reis Ciacci-Zanella, David Emilio Santos Neves de Barcellos
Porcine circovirus type 2 (PCV2) has been identified in pig population in Brazil since 2000, but scarce studies involving wild boars with PCV2 infection are reported in the country. This study aimed to perform the genetic characterization of PCV2 detected in clinically healthy captive wild boars from farms located in Southern Brazil. Bronchial and mesenteric lymph nodes from 129 clinically healthy captive wild boars were tested by nested PCR for PCV2 detection. Six out of 38 positive samples (29.5%) were submitted to a quantitative real time PCR (qPCR) and genetic sequencing...
March 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28325923/clinical-features-and-viral-quasispecies-characteristics-associated-with-infection-by-the-hepatitis-b-virus-g145r-immune-escape-mutant
#14
Yuan Xue, Ming-Jie Wang, Zhi-Tao Yang, De-Min Yu, Yue Han, Dao Huang, Dong-Hua Zhang, Xin-Xin Zhang
Coexistence of the hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (anti-HBs) is an uncommon phenomenon, and the underlying mechanisms remain largely unknown. Amino-acid (aa) substitution from glycine to arginine at aa 145 (G145R), in the major hydrophilic region, has been reported in patients with HBsAg and anti-HBs coexistence. However, there is limited knowledge about the clinical features and viral quasispecies characteristics associated with G145R mutant hepatitis B virus (HBV) infection...
March 22, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/28323868/-waiting-for-daas-a-retrospective-chart-review-of-patients-with-untreated-hepatitis-c-in-rwanda
#15
Neil Gupta, Jules Kabahizi, Constance Mukabatsinda, Timothy David Walker, Emmanuel Musabeyezu, Athanase Kiromera, Jennifer Ilo Van Nuil, Kevin Steiner, Joia Mukherjee, Sabin Nsanzimana, Aimable Mbituyumuremyi
BACKGROUND: Access to treatment for hepatitis C virus (HCV) in sub-Saharan Africa is extremely limited. With the advent of direct acting antivirals (DAAs), highly effective and easy-to-deliver oral regimens are now available on the global market. This study was conducted to understand the background and characteristics of a national cohort of patients with HCV infection enrolled in care and awaiting therapy with DAAs. METHODS AND FINDINGS: We conducted a retrospective chart review of all adult patients with confirmed HCV infection who were currently enrolled in care and treatment at the four existing hepatitis referral centers in Rwanda...
2017: PloS One
https://www.readbyqxmd.com/read/28323757/the-performance-of-human-papillomavirus-biomarkers-in-predicting-anal-high-grade-squamous-intraepithelial-lesions-in-gay-and-bisexual-men
#16
Fengyi Jin, Jennifer M Roberts, Andrew E Grulich, I Mary Poynten, Dorothy A Machalek, Alyssa Cornall, Samuel Phillips, Deborah Ekman, Ross L Mcdonald, Richard J Hillman, David J Templeton, Annabelle Farnsworth, Suzanne M Garland, Christopher K Fairley, Sepehr N Tabrizi
BACKGROUND: We evaluate the performance of human papillomavirus (HPV) biomarkers in prediction of anal histological high-grade squamous intraepithelial lesions (HSIL) in gay and bisexual men (GBM) in Sydney, Australia. DESIGN: Baseline analysis of a three-year cohort study METHODS:: The Study of the Prevention of Anal Cancer (SPANC) is natural history study of anal HPV infection in GBM aged ≥35 years. All participants completed cytological and histological assessments...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28322924/evolutionary-trends-of-resistance-mutational-patterns-of-hbv-reverse-transcriptase-over-years-2002-2012-of-different-treatment-regimens-the-legacy-of-lamivudine-adefovir-combination-treatment
#17
Donatella Vincenti, Pierluca Piselli, Mariacarmela Solmone, Gianpiero D'Offizi, Maria R Capobianchi, Stefano Menzo
Antiviral therapy has revolutionized treatment of chronic HBV infections. First generation compounds, lamivudine and adefovir, displayed a high rate of treatment failures, and have been replaced by more potent compounds with high genetic barrier to resistance. However, the evolution of the virus towards resistance due the use of first generation compounds may still provide useful information for a better management of current antivirals. A single center sequence database including 705 HBV reverse transcriptase sequences from patients failing antiviral treatments (2002-2012) has been statistically analyzed to highlight viral evolution in relationship to the use of antiviral compounds and to their associations/sequencing in those years...
March 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28321885/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
#18
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 20, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28321328/effect-of-season-and-sunlight-on-viral-kinetics-during-hepatitis-c-virus-therapy
#19
Noemi Hernández-Alvarez, Juan Manuel Pascasio Acevedo, Enrique Quintero, Inmaculada Fernández Vázquez, María García-Eliz, Juan de la Revilla Negro, Javier Crespo García, Manuel Hernández-Guerra
BACKGROUND AND AIMS: Rapid viral response (RVR) during antiviral treatment for hepatitis C virus (HCV) predicts sustained viral response (SVR). Recently, vitamin D levels have been associated with SVR. As sunlight is the most important source of vitamin D and shows seasonal variation, we evaluated the effect of season on viral kinetics during peginterferon/ribavirin-based therapy for HCV. METHODS: Consecutive HCV patients treated with peginterferon/ribavirin and boceprevir/ telaprevir (June 2011-July 2014) were included...
2017: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/28318885/genetic-association-of-the-functional-cdhr3-genotype-with-early-onset-adult-asthma-in-japanese-populations
#20
Jun Kanazawa, Hironori Masuko, Yohei Yatagai, Tohru Sakamoto, Hideyasu Yamada, Yoshiko Kaneko, Haruna Kitazawa, Hiroaki Iijima, Takashi Naito, Takefumi Saito, Emiko Noguchi, Satoshi Konno, Masaharu Nishimura, Tomomitsu Hirota, Mayumi Tamari, Nobuyuki Hizawa
BACKGROUND: Recent studies have demonstrated that a coding SNP (rs6967330, Cys529→Tyr) in cadherin-related family member 3 (CDHR3), which was previously associated with wheezing illness and hospitalizations in infancy, could support efficient human rhinovirus C (RV-C) entry and replication. Here, we sought to examine the genetic contribution of this variant to the development of adult asthma. METHODS: We performed a candidate gene case-control association study of 2 independent Japanese populations (a total of 3366 adults)...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
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