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https://www.readbyqxmd.com/read/29161685/intergenotype-recombination-among-new-norovirus-gii-4-variants-in-the-complete-genome
#1
Jinfeng Xu, Tingjun Liu, Hua Wang, Hongxing Shen
GII.4 noroviruses (NoVs) are a major cause of acute gastroenteritis in humans. A new variant of GII.4, the Sydney variant, has recently become more prevalent on a global scale. Intragenotype recombinations are widespread within the pandemic NoV GII.4 lineage, and are likely to be important forces driving the evolution and emergence of novel GII.4 viruses. In this study, we sought to examine the role that intergenotype recombination has played in the emergence of GII.4 Sydney 2012 variants. The results show that the GII...
November 22, 2017: Intervirology
https://www.readbyqxmd.com/read/29160110/peroxiredoxin6-a-multitask-antioxidant-enzyme-involved-in-the-pathophysiology-of-chronic-non-communicable-diseases
#2
Francesca Pacifici, David Della-Morte, Barbara Capuani, Donatella Pastore, Alfonso Bellia, Paolo Sbraccia, Nicola Di Daniele, Renato Lauro, Davide Lauro
SIGNIFICANCE: Chronic Non-Communicable Diseases (NCDs) are the leading causes of disability and death worldwide. NCDs mainly comprise diabetes mellitus, cardiovascular diseases, chronic obstructive pulmonary disease (COPD), cancer, and neurological degenerative diseases, which kill more than 80% of population, especially elderlies, worldwide. Recent Advances: Several recent theories established NCDs as multifactorial diseases, where a combination of genetic, epigenetic and environmental factors contributes to their pathogenesis...
November 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29159022/chinese-herbal-medicine-compound-yi-zhi-hao-pellet-inhibits-replication-of-influenza-virus-infection-through-activation-of-heme-oxygenase-1
#3
Jinqiu Yin, Linlin Ma, Huiqiang Wang, Haiyan Yan, Jin Hu, Wen Jiang, Yuhuan Li
As a leading cause of respiratory disease, influenza A virus (IAV) presents a pandemic threat in annual seasonal outbreaks. Given the limitation of existing anti-influenza therapies, there remains to be a requirement for new drugs. Compound Yi-Zhi-Hao pellet (CYZH) is a famous traditional Chinese medicine (TCM) used in the clinic, whose formula has been recorded in Complication of National Standard for Traditional Chinese Medicine to treat common cold. In this study, we found that CYZH exhibited a broad-spectrum anti-influenza activity and inhibited the expression of viral RNA and proteins in vitro...
November 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/29158405/origin-evolution-and-global-transmission-of-community-acquired-staphylococcus-aureus-st8
#4
Lena Strauß, Marc Stegger, Patrick Eberechi Akpaka, Abraham Alabi, Sebastien Breurec, Geoffrey Coombs, Beverly Egyir, Anders Rhod Larsen, Frederic Laurent, Stefan Monecke, Georg Peters, Robert Skov, Birgit Strommenger, François Vandenesch, Frieder Schaumburg, Alexander Mellmann
USA300 is a pandemic clonal lineage of hypervirulent, community-acquired, methicillin-resistant Staphylococcus aureus (CA-MRSA) with specific molecular characteristics. Despite its high clinical relevance, the evolutionary origin of USA300 remained unclear. We used comparative genomics of 224 temporal and spatial diverse S. aureus isolates of multilocus sequence type (ST) 8 to reconstruct the molecular evolution and global dissemination of ST8, including USA300. Analyses of core SNP diversity and accessory genome variations showed that the ancestor of all ST8 S...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158404/cd1b-restricted-gem-t-cell-responses-are-modulated-by-mycobacterium-tuberculosis-mycolic-acid-meromycolate-chains
#5
Andrew Chancellor, Anna S Tocheva, Chris Cave-Ayland, Liku Tezera, Andrew White, Juma'a R Al Dulayymi, John S Bridgeman, Ivo Tews, Susan Wilson, Nikolai M Lissin, Marc Tebruegge, Ben Marshall, Sally Sharpe, Tim Elliott, Chris-Kriton Skylaris, Jonathan W Essex, Mark S Baird, Stephan Gadola, Paul Elkington, Salah Mansour
Tuberculosis (TB), caused by Mycobacterium tuberculosis, remains a major human pandemic. Germline-encoded mycolyl lipid-reactive (GEM) T cells are donor-unrestricted and recognize CD1b-presented mycobacterial mycolates. However, the molecular requirements governing mycolate antigenicity for the GEM T cell receptor (TCR) remain poorly understood. Here, we demonstrate CD1b expression in TB granulomas and reveal a central role for meromycolate chains in influencing GEM-TCR activity. Meromycolate fine structure influences T cell responses in TB-exposed individuals, and meromycolate alterations modulate functional responses by GEM-TCRs...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158314/tumour-adipose-tissue-crosstalk-fuelling-tumour-metastasis-by-extracellular-vesicles
#6
REVIEW
Lucía Robado de Lope, Olwen Leaman Alcíbar, Ana Amor López, Marta Hergueta-Redondo, Héctor Peinado
During metastasis, tumour cells must communicate with their microenvironment by secreted soluble factors and extracellular vesicles. Different stromal cell types (e.g. bone marrow-derived cells, endothelial cells and fibroblasts) influence the growth and progression of tumours. In recent years, interest has extended to other cell types in the tumour microenvironment such as adipocytes and adipose tissue-derived mesenchymal stem cells. Indeed, obesity is becoming pandemic in some developing countries and it is now considered to be a risk factor for cancer progression...
January 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29156939/phenolic-compounds-as-natural-and-multifunctional-anti-obesity-agents-a-review
#7
Celia Rodríguez-Pérez, Antonio Segura-Carretero, María Del Mar Contreras
Prevalence of obesity worldwide has reached pandemic proportions. Despite the increasing evidence in the implication of phenolic compounds in obesity management, the real effect is not completely understood. The available in vitro and in vivo studies have demonstrated the implication of phenolic compounds in: lowering food intake, decreasing lipogenesis, increasing lipolysis, stimulating fatty acids β-oxidation, inhibiting adipocyte differentiation and growth, attenuating inflammatory responses and suppress oxidative stress...
November 20, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29155652/cdc-support-for-global-public-health-emergency-management
#8
Daniel J Brencic, Meredith Pinto, Adrienne Gill, Michael H Kinzer, Luis Hernandez, Omer G Pasi
Recent pandemics and rapidly spreading outbreaks of infectious diseases have illustrated the interconnectedness of the world and the importance of improving the international community's ability to effectively respond. The Centers for Disease Control and Prevention (CDC), building on a strong foundation of lessons learned through previous emergencies, international recognition, and human and technical expertise, has aspired to support nations around the world to strengthen their public health emergency management (PHEM) capacity...
December 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29154794/the-relative-persuasiveness-of-narrative-versus-non-narrative-health-messages-in-public-health-emergency-communication-evidence-from-a-field-experiment
#9
Mesfin A Bekalu, Cabral A Bigman, Rachel F McCloud, Leesa K Lin, K Viswanath
Previous studies indicated that narrative health messages are more effective than non-narrative messages in influencing health outcomes. However, this body of evidence does not account for differences in health domain, and little is known about the effectiveness of this message execution strategy during public health emergencies. In this study, we examined the relative effectiveness of the two formats in influencing knowledge and perceived response efficacy related to prevention of pandemic influenza, and determined whether effects of message format vary across population sub-groups...
November 14, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/29153067/-detection-of-influenza-virus-infections-by-molecular-and-immunofluorescence-methods
#10
Deniz Yıldırım, Deniz Özdoğru Sağdıç, Buket Şeflek, Mehmet Çimentepe, İbrahim Bayram, Fügen Yarkın
Influenza virus infections are extremely important for human health due to the occurence of seasonal epidemics and pandemics worldwide. Influenza is associated with high morbidity and may result in serious complications such as life threatening viral or bacterial pneumonia. Especially, young children, older adults, patients with chronic diseases such as heart, lung, kidney, and diabetes and immunosuppressed people are at higher risk for complications and death from influenza virus infections. The aim of this study was to determine the incidence of influenza type A and B virus infections and influenza A virus subtypes in hospitalized patients with respiratory tract infections by real-time reverse transcriptase-polymerase chain reaction (RT-PCR, Sacace, Italy), conventional RT-PCR and direct immunofluorescence antibody (DFA, Argene SA, France) tests...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29152878/potency-determination-of-inactivated-h7-influenza-vaccines-using-monoclonal-antibody-based-elisa-and-biolayer-interferometry-assays
#11
Anupama Vasudevan, Amy Woerner, Falko Schmeisser, Swati Verma, Ollie Williams, Jerry P Weir
BACKGROUND: The single radial immunodiffusion (SRID) assay, the accepted method for determining potency of inactivated influenza vaccines, measures an immunogenic form of the influenza hemagglutinin. Nevertheless, alternative methods for measuring vaccine potency have been explored in order to address some of the weaknesses of the SRID assay, including limited sensitivity and the requirement for large amounts of standardized reagents. Monoclonal antibody (mAb)-based potency assays also have the ability to detect and measure relevant immunogenic forms of HA...
November 20, 2017: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29151586/h7n9-virulent-mutants-detected-in-chickens-in-china-pose-an-increased-threat-to-humans
#12
Jianzhong Shi, Guohua Deng, Huihui Kong, Chunyang Gu, Shujie Ma, Xin Yin, Xianying Zeng, Pengfei Cui, Yan Chen, Huanliang Yang, Xiaopeng Wan, Xiurong Wang, Liling Liu, Pucheng Chen, Yongping Jiang, Jinxiong Liu, Yuntao Guan, Yasuo Suzuki, Mei Li, Zhiyuan Qu, Lizheng Guan, Jinkai Zang, Wenli Gu, Shuyu Han, Yangming Song, Yuzhen Hu, Zeng Wang, Linlin Gu, Wenyu Yang, Libin Liang, Hongmei Bao, Guobin Tian, Yanbing Li, Chuanling Qiao, Li Jiang, Chengjun Li, Zhigao Bu, Hualan Chen
Certain low pathogenic avian influenza viruses can mutate to highly pathogenic viruses when they circulate in domestic poultry, at which point they can cause devastating poultry diseases and severe economic damage. The H7N9 influenza viruses that emerged in 2013 in China had caused severe human infections and deaths. However, these viruses were nonlethal in poultry. It is unknown whether the H7N9 viruses can acquire additional mutations during their circulation in nature and become lethal to poultry and more dangerous for humans...
October 24, 2017: Cell Research
https://www.readbyqxmd.com/read/29150910/educating-youth-swine-exhibitors-on-influenza-a-virus-transmission-at-agricultural-fairs
#13
J M Nolting, J Midla, M S Whittington, S D Scheer, A S Bowman
Influenza A virus (IAV) is a major zoonotic pathogen that threatens global public health. Novel strains of influenza A viruses pose a significant risk to public health due to their pandemic potential, and transmission of influenza A viruses from animals to humans is an important mechanism in the generation and introduction of IAVs that threaten human health. The purpose of this descriptive correlational study was to develop real-life training scenarios to better inform swine exhibitors of the risks they may encounter when influenza A viruses are present in swine...
November 17, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29149637/antiviral-potential-of-natural-compounds-against-influenza-virus-hemagglutinin
#14
S Kannan, P Kolandaivel
Influenza virus of different subtypes H1N1, H2N2, H3N2 and H5N1 cause many human pandemic deaths and threatening the people worldwide. The Hemagglutinin (HA) protein mediates viral attachment to host receptors act as an attractive target. The sixteen natural compounds have been chosen to target the HA protein. Molecular docking studies have been performed to find binding affinity of the compounds. Out of the sixteen, three compounds CI, CII and CIII found to posses a higher binding affinity. The molecular dynamics (MD) simulation has been performed to study the structural, dynamical properties for the nine different complexes CI, CII, CIII bound with H1, H2, H3 proteins and the results were compared...
November 4, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29149524/a-systematic-review-and-meta-analysis-of-fetal-outcomes-following-the-administration-of-influenza-a-h1n1-vaccination-during-pregnancy
#15
REVIEW
Chuan Zhang, Xiaodong Wang, Dan Liu, Lingli Zhang, Xin Sun
BACKGROUND: Pregnant women were identified as a population of priority for vaccination during the H1N1 influenza pandemic breaking out in 2009. OBJECTIVES: To assess adverse fetal outcomes following the administration of H1N1 pandemic vaccination during pregnancy. SEARCH STRATEGY: PubMed, Embase, and Cochrane Library were searched up to January 2017. SELECTION CRITERIA: Cohort studies investigating fetal outcomes after H1N1 influenza vaccination during pregnancy were eligible...
November 17, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29147975/batrachochytrium-salamandrivorans-and-the-risk-of-a-second-amphibian-pandemic
#16
REVIEW
Tiffany A Yap, Natalie T Nguyen, Megan Serr, Alexander Shepack, Vance T Vredenburg
Amphibians are experiencing devastating population declines globally. A major driver is chytridiomycosis, an emerging infectious disease caused by the fungal pathogens Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal). Bd was described in 1999 and has been linked with declines since the 1970s, while Bsal is a more recently discovered pathogen that was described in 2013. It is hypothesized that Bsal originated in Asia and spread via international trade to Europe, where it has been linked to salamander die-offs...
November 16, 2017: EcoHealth
https://www.readbyqxmd.com/read/29145878/improving-readiness-for-recruitment-through-simulated-trial-activation-the-adjuvant-steroids-in-adults-with-pandemic-influenza-asap-trial
#17
Wei Shen Lim, Garry Meakin, Clare Brittain, Thomas Bewick, Lelia Duley
BACKGROUND: Research in public health emergencies requires trials to be set up in readiness for activation at short notice and in anticipation of limited timelines for patient recruitment. We conducted a simulated activation of a hibernating pandemic influenza clinical trial in order to test trial processes and to determine the value of such simulation in maintaining trial readiness. METHODS: The simulation involved the Nottingham Clinical Trials Unit, one participating hospital, one manufacturing unit and the Investigational Medicinal Product (IMP) supplier...
November 16, 2017: Trials
https://www.readbyqxmd.com/read/29145619/intranasal-immunization-with-an-attenuated-pep27-mutant-provides-protection-from-influenza-virus-and-secondary-pneumococcal-infections
#18
Seung Han Seon, Jung Ah Choi, Eunji Yang, Sukneung Pyo, Man Ki Song, Dong-Kwon Rhee
During influenza pandemics, secondary pneumococcal infections cause excessive mortality. However, the current pneumococcal polysaccharide conjugate vaccine, PCV 13, provides only limited protection against secondary infection. Therefore, a more effective pneumococcal vaccine is required to protect against secondary pneumococcal infections. Here, intranasal immunization with an attenuated pneumococcal pep27 mutant provides protection from influenza virus infection, and also from secondary pneumococcal challenge...
November 14, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29145498/antigenicity-of-the-2015-2016-seasonal-h1n1-human-influenza-virus-ha-and-na-proteins
#19
Amelia M Clark, Marta L DeDiego, Christopher S Anderson, Jiong Wang, Hongmei Yang, Aitor Nogales, Luis Martinez-Sobrido, Martin S Zand, Mark Y Sangster, David J Topham
Antigenic drift of the hemagglutinin (HA) and neuraminidase (NA) influenza virus proteins contributes to reduced vaccine efficacy. To analyze antigenic drift in human seasonal H1N1 viruses derived from the 2009 pandemic H1N1 virus (pH1N1-like viruses) accounts for the limited effectiveness (around 40%) of vaccination against pH1N1-like viruses during the 2015-2016 season, nasal washes/swabs collected from adult subjects in the Rochester, NY area, were used to sequence and isolate the circulating viruses. The HA and NA proteins from viruses circulating during the 2015-2016 season encoded eighteen and fourteen amino acid differences, respectively, when compared to A/California/04/2009, a strain circulating at the origin of the 2009 pandemic...
2017: PloS One
https://www.readbyqxmd.com/read/29145441/distinct-t-and-nk-cell-populations-may-serve-as-immune-correlates-of-protection-against-symptomatic-pandemic-influenza-a-h1n1-virus-infection-during-pregnancy
#20
Miloje Savic, Jennifer L Dembinski, Ida Laake, Olav Hungnes, Rebecca Cox, Fredrik Oftung, Lill Trogstad, Siri Mjaaland
Maternal influenza infection during pregnancy is associated with increased risk of morbidity and mortality. However, the link between the anti-influenza immune responses and health-related risks during infection is not well understood. We have analyzed memory T and NK cell mediated immunity (CMI) responses in pandemic influenza A(H1N1)pdm09 (pdm09) virus infected non-vaccinated pregnant women participating in the Norwegian Influenza Pregnancy Cohort (NorFlu). The cohort includes information on immunization, self-reported health and disease status, and biological samples (plasma and PBMC)...
2017: PloS One
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