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Influenza infection

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https://www.readbyqxmd.com/read/28813716/no-correlation-of-the-disease-severity-of-influenza-a-virus-infection-with-the-rs12252-polymorphism-of-the-interferon-induced-transmembrane-protein-3-gene
#1
Yong-Chan Kim, Byung-Hoon Jeong
The 2009 H1N1 influenza pandemic, which involved a more pathogenic virus than seasonal influenza viruses, rapidly spread around the world and caused many deaths in humans. The members of the interferon-induced transmembrane (IFITM) protein family prevent viral replication and are crucial for defending the host cell against influenza A virus (IAV). Several studies suggest that the CC genotype at the single nucleotide polymorphism (SNP) rs12252 of IFITM3 confers a genetic predisposition to pandemic influenza A in Europeans and Han Chinese, although one study in a British cohort failed to show an association...
August 17, 2017: Intervirology
https://www.readbyqxmd.com/read/28813663/a-crispr-activation-screen-identifies-a-pan-avian-influenza-virus-inhibitory-host-factor
#2
Brook E Heaton, Edward M Kennedy, Rebekah E Dumm, Alfred T Harding, Matthew T Sacco, David Sachs, Nicholas S Heaton
Influenza A virus (IAV) is a pathogen that poses significant risks to human health. It is therefore critical to develop strategies to prevent influenza disease. Many loss-of-function screens have been performed to identify the host proteins required for viral infection. However, there has been no systematic screen to identify the host factors that, when overexpressed, are sufficient to prevent infection. In this study, we used CRISPR/dCas9 activation technology to perform a genome-wide overexpression screen to identify IAV restriction factors...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813449/influenza-virus-infections-among-patients-attending-emergency-department-according-to-main-reason-to-presenting-to-ed-a-3-year-prospective-observational-study-during-seasonal-epidemic-periods
#3
Enrique Casalino, Stephanie Antoniol, Nadhira Fidouh, Christophe Choquet, Jean-Christophe Lucet, Xavier Duval, Benoit Visseaux, Laurent Pereira
OBJECTIVE: The role of influenza virus in patients presenting at ED during seasonal-epidemic periods has not previously been specified. Our objective was to determine its frequency according to clinical presentation. METHODS: This is a prospective observational study conducted during three-consecutive seasonal Influenza epidemics (2013-2015), including patients presenting i) community-acquired pneumonia (CAP); ii) severe acute symptoms (SAS): respiratory failure (RF), hemodynamic failure (HF), cardiac failure (CF), and miscellaneous symptoms (M); iii) symptoms suggesting influenza (PSSI)...
2017: PloS One
https://www.readbyqxmd.com/read/28813016/a-novel-high-mannose-specific-lectin-from-the-green-alga-halimeda-renschii-exhibits-a-potent-anti-influenza-virus-activity-through-high-affinity-binding-to-the-viral-hemagglutinin
#4
Jinmin Mu, Makoto Hirayama, Yuichiro Sato, Kinjiro Morimoto, Kanji Hori
We have isolated a novel lectin, named HRL40 from the green alga Halimeda renschii. In hemagglutination-inhibition test and oligosaccharide-binding experiment with 29 pyridylaminated oligosaccharides, HRL40 exhibited a strict binding specificity for high-mannose N-glycans having an exposed (α1-3) mannose residue in the D2 arm of branched mannosides, and did not have an affinity for monosaccharides and other oligosaccharides examined, including complex N-glycans, an N-glycan core pentasaccharide, and oligosaccharides from glycolipids...
August 16, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28812054/influenza-a-virus-infection-and-nucleotide-sequencing-in-hiv-infected-children-a-case-report-and-review-of-literature
#5
Visal Moolasart, Suthat Chottanapund, Jarurnsook Ausavapipit, Srisuda Samadchai, Sirirat Likanonsakul, Sumonmal Uttayamakul, Somkid Srisopha, Don Changsom, Hatairat Lerdsamran, Pilaipan Puthavathana
No abstract text is available yet for this article.
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28811769/significance-of-electronic-health-records-a-comparative-study-of-vaccination-rates-in-patients-with-sickle-cell-disease
#6
Asli Korur, Süheyl Asma, Cigdem Gereklioglu, Soner Solmaz, Can Boga, Akatlı Kürsat Ozsahin, Altug Kut
OBJECTIVE: In this study, we investigated the influence of electronic health records (EHR) and electronic vaccination schedule applications on the vaccination status of patients who were admitted to our Center for the treatment of sickle cell disease (SCD). METHODS: The vaccination status against influenza and pneumococcus infection was determined in 93 patients who were admitted to the hematology outpatient clinic, Baskent University Adana Hospital from April 2004 to March 2009...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28810835/secondary-organizing-pneumonia-following-viral-pneumonia-caused-by-severe-influenza-b-a-case-report-and-literature-reviews
#7
Nobuhiro Asai, Toyoharu Yokoi, Naoya Nishiyama, Yusuke Koizumi, Daisuke Sakanashi, Hideo Kato, Mao Hagihara, Hiroyuki Suematsu, Yuka Yamagishi, Hiroshige Mikamo
BACKGROUND: Some reported that organizing pneumonia (OP) may occur after influenza A infections including swine-origin influenza A (H1N1). However, OP associated with influenza B infection has never been reported. We report the first case of secondary OP associated with viral pneumonia caused by influenza B. CASE PRESENTATION: A 23-year old woman was diagnosed as viral pneumonia caused by type B influenza. Despite of antiviral therapy, abnormal chest shadows were not improved...
August 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28809439/in-silico-profiling-of-the-biological-activities-of-amaryllidaceae-alkaloids
#8
Eman Shawky
OBJECTIVES: The large number of publications about Amaryllidaceae alkaloids reflects the abundance and variety in biological activity of these alkaloids. An in-silico approach was implemented in this work to rationalize the individual alkaloids to molecular biological activity. METHODS: A database was generated containing 313 Amaryllidaceae alkaloids which were then subjected to in-silico-validated structure-based virtual screening using extra precision (XP) approach of Glide docking program...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28808938/advances-in-vaccines-to-prevent-viral-respiratory-illnesses-in-children
#9
Aleisha J Anderson, Tom L Snelling, Hannah C Moore, Christopher C Blyth
Childhood vaccination has played a critical role in the reduction of morbidity and mortality from communicable diseases, including specific respiratory pathogens. Acute lower respiratory infection (ALRI) of both bacterial and viral aetiology continues to impact global child health. Key bacterial pathogens including Streptococcus pneumoniae and Haemophilus influenza type b are specifically targeted with current vaccination programmes, while at present there are less effective strategies for the prevention of viral disease...
August 14, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28808690/the-hemagglutinin-esterase-fusion-glycoprotein-is-a-primary-determinant-of-the-exceptional-thermal-and-acid-stability-of-influenza-d-virus
#10
Jieshi Yu, Busha Hika, Runxia Liu, Zizhang Sheng, Ben M Hause, Feng Li, Dan Wang
Influenza D virus (IDV) is unique among four types of influenza viruses in that it utilizes cattle as a primary reservoir. The thermal and acid stability of IDV were examined and directly compared with those of influenza A virus (IAV), influenza B virus (IBV), and influenza C virus (ICV). The results of our experiments demonstrated that only IDV had a high residual infectivity (~2.5 log units of 50% tissue culture infective dose [TCID50]/ml) after a 60-min exposure to 53°C in solution at a neutral pH, and remarkably, IDV retained this infectivity even after exposure to 53°C for 120 min...
July 2017: MSphere
https://www.readbyqxmd.com/read/28807913/reducing-antibacterial-development-risk-for-gsk1322322-by-exploring-potential-human-dose-regimens-in-nonclinical-efficacy-studies-using-immunocompetent-rats
#11
Jennifer L Hoover, Christine M Singley, Philippa Elefante, Peter DeMarsh, Magdalena Zalacain, Stephen Rittenhouse
Directly testing proposed clinical dosing regimens in nonclinical studies can reduce risk during the development of novel antibacterial agents. Optimal dosing regimens can be identified in animal models by testing recreated human pharmacokinetic profiles. An example of this approach is presented using continuous intravenous infusions of GSK1322322 in immunocompetent rats to evaluate recreated Phase 1 human exposures in pneumonia models with Streptococcus pneumoniae and Haemophilus influenzae and an abscess model with Staphylococcus aureus GSK1322322 was administered via continuous intravenous infusion to recreate 1000 or 1500 mg oral doses every 12h in humans...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28807912/safety-and-efficacy-of-mhaa4549a-a-broadly-neutralizing-monoclonal-antibody-in-a-human-influenza-a-challenge-model-a-phase-2-randomized-trial
#12
Jacqueline M McBride, Jeremy J Lim, Tracy Burgess, Rong Deng, Michael A Derby, Mauricio Maia, Priscilla Horn, Omer Siddiqui, Daniel Sheinson, Haiyin Chen-Harris, Elizabeth M Newton, Dimitri Fillos, Denise Nazzal, Carrie M Rosenberger, Maikke B Ohlson, Rob Lambkin-Williams, Hosnieh Fathi, Jeffrey M Harris, Jorge A Tavel
BACKGROUND: MHAA4549A, a human monoclonal antibody targeting the hemagglutinin stalk region of influenza A virus (IAV), is being developed as a therapeutic for patients hospitalized with severe IAV infection. Safety and efficacy of MHAA4549A were assessed in a randomized, double-blind, placebo-controlled, dose-ranging study in a human IAV-challenge model. METHODS: One hundred healthy volunteers were inoculated with A/Wisconsin/67/2005 (H3N2) IAV and, 24-36 hours later, administered a single intravenous dose of either placebo, MHAA4549A (400, 1200, or 3600 mg) or a standard oral dose of oseltamivir...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28807608/benefits-of-flu-vaccination-for-persons-with-diabetes-mellitus-a-review
#13
REVIEW
M Goeijenbier, T T van Sloten, L Slobbe, C Mathieu, P van Genderen, Walter E P Beyer, Albert D M E Osterhaus
Diabetes mellitus imposes a significant and increasing burden on society, with major consequences for human health, welfare and the economy worldwide. Persons with diabetes mellitus are at increased risk of developing severe complications after influenza virus infection and guidelines advise vaccination. The present evidence for influenza vaccine effectiveness in persons with diabetes mellitus is mainly based on observational studies with clinical endpoints like hospitalization and death, indicating a beneficial reduction of morbidity and mortality...
August 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28807607/plasma-cell-and-serum-antibody-responses-to-influenza-vaccine-in-preterm-and-full-term-infants
#14
Carl T D'Angio, Claire P Wyman, Ravi S Misra, Jessica L Halliley, Hongyue Wang, Julianne E Hunn, Caitlin M Fallone, F Eun-Hyung Lee
BACKGROUND: Preterm (PT) infants are at greater risk for severe influenza infection and experience decrements in long-term antibody responses to vaccines. This may related to defects in antibody secreting cell (ASC) generation. OBJECTIVE: To investigate the relationships among the frequencies of influenza-specific antibody secreting cells, ASC numbers and subsets, and antibody responses to influenza vaccines (IV) among PT and full-term (FT) infants. DESIGN/METHODS: We enrolled 11 former PT (≤32weeks' gestation, ≤1500 g' birth weight) and 11FT infants, 6-17months of age, receiving their first influenza immunizations...
August 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28807095/simultaneous-detection-of-13-key-bacterial-respiratory-pathogens-by-combination-of-multiplex-pcr-and-capillary-electrophoresis
#15
Lu Xi Jiang, Hong Yu Ren, Hai Jian Zhou, Si Hong Zhao, Bo Yan Hou, Jian Ping Yan, Tian Qin, Yu Chen
OBJECTIVE: Lower respiratory tract infections continue to pose a significant threat to human health. It is important to accurately and rapidly detect respiratory bacteria. To compensate for the limits of current respiratory bacteria detection methods, we developed a combination of multiplex polymerase chain reaction (PCR) and capillary electrophoresis (MPCE) assay to detect thirteen bacterial pathogens responsible for lower respiratory tract infections, including Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Mycoplasma pneumoniae, Legionella spp...
August 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28806976/quantitative-detection-of-human-malawi-polyomavirus-in-nasopharyngeal-aspirates-sera-and-feces-in-beijing-china-using-real-time-taqman-based-pcr
#16
Fen-Lian Ma, Dan-di Li, Tian-Li Wei, Jin-Song Li, Li-Shu Zheng
BACKGROUND: Human Malawi polyomavirus (MWPyV) was discovered in 2012, but its prevalence and clinical characteristics are largely unknown. METHODS: We used real-time TaqMan-based PCR to detect MWPyV in the feces (n = 174) of children with diarrhea, nasopharyngeal aspirates (n = 887) from children with respiratory infections, and sera (n = 200) from healthy adults, and analyzed its clinical characteristics statistically. All the MWPyV-positive specimens were also screened for other common respiratory viruses...
August 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28805681/influenza-virus-infection-interferon-response-viral-counter-response-and-apoptosis
#17
REVIEW
Jung Min Shim, Jinhee Kim, Tanel Tenson, Ji-Young Min, Denis E Kainov
Human influenza A viruses (IAVs) cause global pandemics and epidemics, which remain serious threats to public health because of the shortage of effective means of control. To combat the surge of viral outbreaks, new treatments are urgently needed. Developing new virus control modalities requires better understanding of virus-host interactions. Here, we describe how IAV infection triggers cellular apoptosis and how this process can be exploited towards the development of new therapeutics, which might be more effective than the currently available anti-influenza drugs...
August 12, 2017: Viruses
https://www.readbyqxmd.com/read/28805243/factors-associated-with-acceptance-of-pandemic-flu-vaccine-by-healthcare-professionals-in-spain-2009-2010
#18
Tania Fernández-Villa, Antonio J Molina, Nuria Torner, Jesus Castilla, Jenaro Astray, Susana García-Gutiérrez, José María Mayoral, Sonia Tamames, Ángela Domínguez, Vicente Martín
The A(H1N1)pdm09 influenza virus reached pandemic level in Spain in 2009, prompting a national vaccination campaign. To avoid transmission to patients, healthcare professionals' vaccination against pandemic influenza is crucial. The main objective of this study was to analyze factors associated with the failure by healthcare professionals to accept the pandemic vaccination in 2009. A cross-sectional survey was conducted of healthcare professionals in seven of Spain's autonomous regions. A questionnaire was used to collect information about personal and professional details, the respondents' flu vaccination status in the 2008-2009 and 2009-2010 seasons (seasonal and pandemic vaccines), and their knowledge and attitudes...
August 14, 2017: Research in Nursing & Health
https://www.readbyqxmd.com/read/28805017/estimating-the-between-farm-transmission-rates-for-highly-pathogenic-avian-influenza-subtype-h5n1-epidemics-in-bangladesh-between-2007-and-2013
#19
A Ssematimba, I Okike, G M Ahmed, M Yamage, G J Boender, T J Hagenaars, B Bett
Highly Pathogenic Avian Influenza (HPAI) is classified by the World Organization for Animal Health as one of the notifiable diseases. Its occurrence is associated with severe socio-economic impacts and is also zoonotic. Bangladesh HPAI epidemic data for the period between 2007 and 2013 were obtained and split into epidemic waves based on the time lag between outbreaks. By assuming the number of newly infected farms to be binomially distributed, we fit a Generalized Linear Model to the data to estimate between-farm transmission rates (β)...
August 14, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28803969/molecular-detection-and-characterization-of-influenza-c-viruses-from-western-india
#20
V A Potdar, D D Hinge, M R Dakhave, A Manchanda, N Jadhav, P B Kulkarni, M S Chadha
Since 2003, India has had a well-established influenza surveillance network, though Influenza C virus was not the focus of study. We therefore retrospectively analyzed clinical samples from Pune, western India collected during January 2009 to August 2015, by real-time RT-PCR. Three of 2530 samples of patients with influenza-like illness (ILI) or severe acute respiratory illness (SARI) showed positivity for Influenza C virus infection, while 105 and 31 samples were positive for Influenza A and B viruses respectively...
August 10, 2017: Infection, Genetics and Evolution
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