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https://www.readbyqxmd.com/read/28340310/viruses-in-cystic-fibrosis-patients-airways
#1
Lisa Billard, Rozenn Le Berre, Léa Pilorgé, Christopher Payan, Geneviève Héry-Arnaud, Sophie Vallet
Although bacteria have historically been considered to play a major role in cystic fibrosis (CF) airway damage, a strong impact of respiratory viral infections (RVI) is also now recognized. Emerging evidence confirms that respiratory viruses are associated with deterioration of pulmonary function and exacerbation and facilitation of bacterial colonization in CF patients. The aim of this review is to provide an overview of the current knowledge on respiratory viruses in CF airways, to discuss the resulting inflammation and RVI response, to determine how to detect the viruses, and to assess their clinical consequences, prevalence, and interactions with bacteria...
March 24, 2017: Critical Reviews in Microbiology
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
#2
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/28338458/hepatitis-b-in-solid-organ-transplant-procedures-other-than-liver
#3
Dina Halegoua-De Marzio, Jonathan M Fenkel, Cataldo Doria
Transplant is often the best treatment available for patients with end-stage organ failure. Hepatitis B virus infection in transplant procedures other than liver is a major concern because it can be a significant cause of morbidity and mortality after transplant. Due to the increased risk of hepatic complications, such as fibrosing cholestatic hepatitis or histologic deterioration after transplant, systematic use of nucleoside or nucleotide analogues shortly before or at the time of transplant is recommended (tenofovir or entecavir are preferable to lamivudine) in all patients, whatever the baseline histologic evaluation...
April 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28338050/schisandrin-a-inhibits-dengue-viral-replication-via-upregulating-antiviral-interferon-responses-through-stat-signaling-pathway
#4
Jung-Sheng Yu, Yu-Hsuan Wu, Chin-Kai Tseng, Chun-Kuang Lin, Yao-Chin Hsu, Yen-Hsu Chen, Jin-Ching Lee
Dengue virus (DENV) infects 400 million people worldwide annually. Infection of more than one serotype of DENV highly corresponds to dengue hemorrhagic fever and dengue shock syndrome, which are the leading causes of high mortality. Due to lack of effective vaccines and unavailable therapies against DENV, discovery of anti-DENV agents is urgently needed. We first characterize that Schisandrin A can inhibit the replication of four serotypes of DENV in a concentration- and time-dependent manner, with an effective half-maximal effective concentration 50% (EC50) value of 28...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336382/migration-and-infectious-diseases
#5
REVIEW
Francesco Castelli, Giorgia Sulis
BACKGROUND: Infectious diseases still represent an important cause of morbidity and mortality among foreign-born individuals. The rising migration flows towards Europe throughout the last few years are raising renewed concerns about management issues and the potential associated risk for the native population. AIMS: To discuss the health implications and challenges related to the four phases of migration, from first arrival to stable resettlement. SOURCES: Scientific literature and relevant statistical reports...
March 20, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28335554/complete-and-incomplete-hepatitis-b-virus-particles-formation-function-and-application
#6
REVIEW
Jianming Hu, Kuancheng Liu
Hepatitis B virus (HBV) is a para-retrovirus or retroid virus that contains a double-stranded DNA genome and replicates this DNA via reverse transcription of a RNA pregenome. Viral reverse transcription takes place within a capsid upon packaging of the RNA and the viral reverse transcriptase. A major characteristic of HBV replication is the selection of capsids containing the double-stranded DNA, but not those containing the RNA or the single-stranded DNA replication intermediate, for envelopment during virion secretion...
March 21, 2017: Viruses
https://www.readbyqxmd.com/read/28334452/quantitative-assessment-of-the-risk-of-release-of-foot-and-mouth-disease-virus-via-export-of-bull-semen-from-israel
#7
A Meyer, L Zamir, A Ben Yair Gilboa, B Gelman, D U Pfeiffer, T Vergne
Various foot-and-mouth disease (FMD) virus strains circulate in the Middle East, causing frequent episodes of FMD outbreaks among Israeli livestock. Since the virus is highly resistant in semen, artificial insemination with contaminated bull semen may lead to the infection of the receiver cow. As a non-FMD-free country with vaccination, Israel is currently engaged in trading bull semen only with countries of the same status. The purpose of this study was to assess the risk of release of FMD virus through export of bull semen in order to estimate the risk for FMD-free countries considering purchasing Israeli bull semen...
March 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28332653/review-of-the-foot-and-mouth-disease-situation-in-north-africa-and-the-risk-of-introducing-the-disease-into-europe
#8
R Bouguedour, A Ripani
Foot and mouth disease (FMD) is a highly contagious disease of cloven-hoofed animals, including cattle, pigs, sheep, goats, and certain wildlife species. The disease can cause massive economic losses when introduced into countries that were free from the infection, generating negative effects due to reduced animal productivity and restrictions on international livestock trade. Following 15 years of FMD absence, Tunisia and Algeria experienced an incursion of the disease in 2014. The epidemiological situation and disease control measures in operation for FMD in the North African region are not homogeneous...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332643/virus-mutations-and-their-impact-on-vaccination-against-infectious-bursal-disease-gumboro-disease
#9
A Boudaoud, B Mamache, W Tombari, A Ghram
Infectious bursal disease (also known as Gumboro disease) is an immunosuppressive viral disease specific to chickens. In spite of all the information amassed on the antigenic and immunological characteristics of the virus, the disease has not yet been brought fully under control. It is still prevalent in properly vaccinated flocks carrying specific antibodies at levels normally high enough to prevent the disease. Common causes apart, failure of vaccination against infectious bursal disease is associated mainly with early vaccination in flocks of unknown immune status and with the evolution of viruses circulating in the field, leading to antigenic drift and a sharp rise in pathogenicity...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332627/cross-neutralizing-anti-hiv-1-human-single-chain-variable-fragments-scfvs-against-cd4-binding-site-and-n332-glycan-identified-from-a-recombinant-phage-library
#10
Lubina Khan, Rajesh Kumar, Ramachandran Thiruvengadam, Hilal Ahmad Parray, Muzamil Ashraf Makhdoomi, Sanjeev Kumar, Heena Aggarwal, Madhav Mohata, Abdul Wahid Hussain, Raksha Das, Raghavan Varadarajan, Jayanta Bhattacharya, Madhu Vajpayee, K G Murugavel, Suniti Solomon, Subrata Sinha, Kalpana Luthra
More than 50% of HIV-1 infection globally is caused by subtype_C viruses. Majority of the broadly neutralizing antibodies (bnAbs) targeting HIV-1 have been isolated from non-subtype_C infected donors. Mapping the epitope specificities of bnAbs provides useful information for vaccine design. Recombinant antibody technology enables generation of a large repertoire of monoclonals with diverse specificities. We constructed a phage recombinant single chain variable fragment (scFv) library with a diversity of 7.8 × 10(8) clones, using a novel strategy of pooling peripheral blood mononuclear cells (PBMCs) of six select HIV-1 chronically infected Indian donors whose plasma antibodies exhibited potent cross neutralization efficiency...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331098/recombinant-modified-vaccinia-virus-ankara-generating-ebola-virus-like-particles
#11
Marc Schweneker, Andrea S Laimbacher, Gert Zimmer, Susanne Wagner, Elisabeth M Schraner, Michael Wolferstätter, Marieken Klingenberg, Ulrike Dirmeier, Robin Steigerwald, Henning Lauterbach, Hubertus Hochrein, Paul Chaplin, Mark Suter, Jürgen Hausmann
There are currently no approved therapeutics or vaccines to treat or protect against the severe hemorrhagic fever and death caused by Ebola virus (EBOV). Ebola virus-like particles (EBOV-VLPs) consisting of the matrix protein VP40, the glycoprotein (GP) and the nucleoprotein (NP) are highly immunogenic and protective in non-human primates against Ebola virus disease (EVD). We have constructed a modified vaccinia virus Ankara-Bavarian Nordic(®) (MVA-BN(®)) recombinant co-expressing VP40 and glycoprotein (GP) of EBOV Mayinga and the nucleoprotein (NP) of Taï Forest virus (TAFV) (MVA-BN-EBOV-VLP) to launch non-infectious EBOV-VLPs as a second vaccine modality in the MVA-BN-EBOV-VLP-vaccinated organism...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331092/monkeypox-virus-host-factor-screen-in-haploid-cells-identifies-essential-role-of-garp-complex-in-extracellular-virus-formation
#12
Susan Realegeno, Andreas S Puschnik, Amrita Kumar, Cynthia Goldsmith, Jillybeth Burgado, Suryaprakash Sambhara, Victoria A Olson, Darin Carroll, Inger Damon, Tetsuya Hirata, Taroh Kinoshita, Jan E Carette, Panayampalli Subbian Satheshkumar
Monkeypox virus (MPXV) is a human pathogen that is a member of the Orthopoxvirus genus, which includes Vaccinia virus and Variola virus (the causative agent of smallpox). Human monkeypox is considered an emerging zoonotic infectious disease. To identify host factors required for MPXV infection, we performed a genome-wide insertional mutagenesis screen in human haploid cells. The screen revealed several candidate genes, including those involved in Golgi trafficking, glycosaminoglycan biosynthesis and glycosylphosphatidylinositol (GPI) - anchor biosynthesis...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331084/structural-insights-into-emerging-pediatric-pathogens-human-bocaparvoviruses
#13
Mario Mietzsch, Shweta Kailasan, Jamie Garrison, Maria Ilyas, Paul Chipman, Kalle Kantola, Mandy E Janssen, John Spear, Duncan Sousa, Robert McKenna, Kevin Brown, Maria Söderlund-Venermo, Timothy Baker, Mavis Agbandje-McKenna
Bocaparvoviruses are emerging pathogens of the Parvoviridae family. Human bocaviruses 1 (HBoV1) causes severe respiratory infections and HBoV2-4 gastrointestinal infections in young children. Recent reports of life threatening cases, lack of direct treatment or vaccination, and a limited understanding of their disease mechanisms demand the need to study these pathogens on a molecular and structural level for the development of therapeutics. Towards this end, the capsid structures of HBoV1, HBoV3, and HBoV4 were determined to 2...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331080/evaluation-of-the-immune-responses-to-and-cross-protective-efficacy-of-eurasian-h7-avian-influenza-viruses
#14
Hyeok-Il Kwon, Young-Il Kim, Su-Jin Park, Min-Suk Song, Eun-Ha Kim, Se Mi Kim, Young-Jae Si, In-Won Lee, Byung-Min Song, Youn-Jeong Lee, Seok Joong Yun, Wun-Jae Kim, Young Ki Choi
Due to increasing concerns of human infection by various H7 viruses, including recent H7N9 viruses, we evaluated the genetic relationships and the cross-protective efficacies of three different Eurasian H7 avian influenza viruses. Phylogenic and molecular analysis revealed that recent Eurasian H7 viruses can be separated into two different lineages with relatively high amino acid identity within groups (94.8 to 98.8%), and low amino acid identity (90.3 to 92.6 %) between the groups. In vivo immunization with representatives of each group revealed that while group-specific cross-reactivity was induced, cross-reactive HI titers were approximately fourfold lower against heterologous group viruses compared to homologous group viruses...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28330482/development-of-a-model-of-saint-louis-encephalitis-infection-and-disease-in-mice
#15
Rafael Elias Marques, Juliana L Del Sarto, Rebeca P F Rocha, Giovanni F Gomes, Allysson Cramer, Milene A Rachid, Danielle G Souza, Maurício L Nogueira, Mauro M Teixeira
BACKGROUND: Flaviviruses are a genre of closely related viral pathogens which emerged in the last decades in Brazil and in the world. Saint (St.) Louis encephalitis virus (SLEV) is a neglected flavivirus that can cause a severe neurological disease that may lead to death or sequelae. St. Louis encephalitis pathogenesis is poorly understood, which hinders the development of specific treatment or vaccine. METHODS: To address this problem, we developed a model of SLEV infection in mice to study mechanisms involved in the pathogenesis of severe disease...
March 22, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28330110/sequence-based-approach-for-rapid-identification-of-cross-clade-cd8-t-cell-vaccine-candidates-from-all-high-risk-hpv-strains
#16
Krishna P Singh, Neeraj Verma, Bashir A Akhoon, Vishal Bhatt, Shishir K Gupta, Shailendra K Gupta, Suchi Smita
Human papilloma virus (HPV) is the primary etiological agent responsible for cervical cancer in women. Although in total 16 high-risk HPV strains have been identified so far. Currently available commercial vaccines are designed by targeting mainly HPV16 and HPV18 viral strains as these are the most common strains associated with cervical cancer. Because of the high level of antigenic specificity of HPV capsid antigens, the currently available vaccines are not suitable to provide cross-protection from all other high-risk HPV strains...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329211/therapeutic-vaccine-for-genital-herpes-simplex-virus-2-infection-findings-from-a-randomized-trial
#17
David I Bernstein, Anna Wald, Terri Warren, Kenneth Fife, Stephen Tyring, Patricia Lee, Nick Van Wagoner, Amalia Magaret, Jessica B Flechtner, Sybil Tasker, Jason Chan, Amy Morris, Seth Hetherington
Background.: Genital herpes simplex virus type 2 (HSV-2) infection causes recurrent lesions and frequent viral shedding. GEN-003 is a candidate therapeutic vaccine containing HSV-2 gD2ΔTMR and ICP4.2, and Matrix-M2 adjuvant. Methods.: Persons with genital herpes were randomized into three dose cohorts to receive three intramuscular doses 21 days apart of 10 µg, 30 µg, or 100 µg of GEN-003, antigens without adjuvant, or placebo. Participants obtained genital swabs twice-daily for HSV-2 detection and monitored genital lesions for 28-day periods at baseline and intervals after the last dose...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28328962/the-blood-dna-virome-in-8-000-humans
#18
Ahmed Moustafa, Chao Xie, Ewen Kirkness, William Biggs, Emily Wong, Yaron Turpaz, Kenneth Bloom, Eric Delwart, Karen E Nelson, J Craig Venter, Amalio Telenti
The characterization of the blood virome is important for the safety of blood-derived transfusion products, and for the identification of emerging pathogens. We explored non-human sequence data from whole-genome sequencing of blood from 8,240 individuals, none of whom were ascertained for any infectious disease. Viral sequences were extracted from the pool of sequence reads that did not map to the human reference genome. Analyses sifted through close to 1 Petabyte of sequence data and performed 0.5 trillion similarity searches...
March 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28328809/infectious-diseases-prevalence-vaccination-coverage-and-diagnostic-challenges-in-a-population-of-internationally-adopted-children-referred-to-a-tertiary-care-children-s-hospital-from-2009-to-2015
#19
Sara Sollai, Francesca Ghetti, Leila Bianchi, Maurizio de Martino, Luisa Galli, Elena Chiappini
Infectious diseases are common in internationally adopted children (IAC).With the objective to evaluate infectious diseases prevalence in a large cohort of IAC and to explore possible risk factors for tuberculosis (TB) and parasitic infections, clinical and laboratory data at first screening visit of all IAC (<18 years) consecutively referred to our Center in 2009 to 2015 were collected and analyzed.In total, 1612 children (median age: 5.40 years; interquartile range: 3.00-7.90) were enrolled, 123/1612 (7...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28325903/whole-genome-analysis-of-human-papillomavirus-types-16-18-and-58-isolated-from-cervical-precancer-and-cancer-samples-in-chinese-women
#20
Ying Liu, Yaqi Pan, Weijiao Gao, Yang Ke, Zheming Lu
Human papillomavirus (HPV) types 16, 18 and 58 are ranked the top three high-risk HPV types for cervical intraepithelial neoplasia (CIN) and invasive carcinoma. We aimed to evaluate the diversity of HPV16, HPV18, and HPV58 genetic variants by HPV capture technology combined with next generation sequencing. 295, 73, and 148 variations were observed in 51 HPV16, 7 HPV18, and 11 HPV58 genomes, respectively. HPV16 isolates were predominantly of the A variant lineage, and sublineage A4 (Asian) was the most common...
March 21, 2017: Scientific Reports
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