keyword
MENU ▼
Read by QxMD icon Read
search

NS1

keyword
https://www.readbyqxmd.com/read/28644867/host-derived-apolipoproteins-play-comparable-roles-with-viral-secretory-proteins-erns-and-ns1-in-the-infectious-particle-formation-of-flaviviridae
#1
Takasuke Fukuhara, Tomokazu Tamura, Chikako Ono, Mai Shiokawa, Hiroyuki Mori, Kentaro Uemura, Satomi Yamamoto, Takeshi Kurihara, Toru Okamoto, Ryosuke Suzuki, Kentaro Yoshii, Takeshi Kurosu, Manabu Igarashi, Hiroshi Aoki, Yoshihiro Sakoda, Yoshiharu Matsuura
Amphipathic α-helices of exchangeable apolipoproteins have shown to play crucial roles in the formation of infectious hepatitis C virus (HCV) particles through the interaction with viral particles. Among the Flaviviridae members, pestivirus and flavivirus possess a viral structural protein Erns or a non-structural protein 1 (NS1) as secretory glycoproteins, respectively, while Hepacivirus including HCV has no secretory glycoprotein. In case of pestivirus replication, the C-terminal long amphipathic α-helices of Erns are important for anchoring to viral membrane...
June 23, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28644549/a-retrospective-analysis-of-the-symptoms-and-course-of-dengue-infection-during-pregnancy
#2
Kavita Agarwal, Sunita Malik, Pratima Mittal
OBJECTIVE: To assess outcomes among pregnant women diagnosed with dengue infection. METHODS: In a retrospective study, the medical records of all pregnant women with dengue infection admitted to Safdarjung Hospital, New Delhi, India, from July to December 2015 were reviewed. Maternal and fetal outcomes were compared by pregnancy length and stage of disease at diagnosis. RESULTS: Overall, 62 pregnant women with dengue infection were identified...
June 23, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28637754/functional-evolution-of-influenza-ns1-protein-in-currently-circulating-human-2009-pandemic-h1n1-viruses
#3
Amelia M Clark, Aitor Nogales, Luis Martinez-Sobrido, David J Topham, Marta L DeDiego
In 2009, a novel H1N1 influenza virus emerged in humans, causing a global pandemic. It was previously shown that the NS1 protein from this human 2009 pandemic H1N1 (pH1N1) virus was an effective interferon (IFN) antagonist, but could not inhibit general host gene expression, unlike other NS1 proteins from seasonal human H1N1 and H3N2 viruses. Here, we show that the NS1 protein from currently circulating pH1N1 viruses has evolved to encode 6 amino acid changes (E55K, L90I, I123V, E125D, K131E, and N205S) with respect to the original protein...
June 21, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28637750/interplay-of-pa-x-and-ns1-proteins-in-replication-and-pathogenesis-of-a-temperature-sensitive-2009-pandemic-h1n1-influenza-a-virus
#4
Aitor Nogales, Laura Rodriguez, Marta L DeDiego, David J Topham, Luis Martínez-Sobrido
Influenza A viruses (IAVs) cause seasonal epidemics and occasional pandemics, representing a serious public health concern. It has been described that one mechanism used by some IAV strains to escape the host innate immune responses and modulate virus pathogenicity involves the ability of PA-X and NS1 proteins to inhibit the host protein synthesis in infected cells. It was reported that for the 2009 pandemic H1N1 IAV (pH1N1) only the PA-X protein has this inhibiting capability while the NS1 protein did not...
June 21, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28637462/outbreak-tracking-of-aleutian-mink-disease-virus-amdv-using-partial-ns1-gene-sequencing
#5
P Ryt-Hansen, C K Hjulsager, E E Hagberg, M Chriél, T Struve, A G Pedersen, L E Larsen
BACKGROUND: Aleutian Mink Disease (AMD) is an infectious disease of mink (Neovison vison) and globally a major cause of economic losses in mink farming. The disease is caused by Aleutian Mink Disease Virus (AMDV) that belongs to the genus Amdoparvovirus within the Parvoviridae family. Several strains have been described with varying virulence and the severity of infection also depends on the host's genotype and immune status. Clinical signs include respiratory distress in kits and unthriftiness and low quality of the pelts...
June 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/28622870/molecular-characterization-of-feline-panleukopenia-virus-isolated-from-mink-and-its-pathogenesis-in-mink
#6
Diao Fei-Fei, Zhao Yong-Feng, Wang Jian-Li, Wei Xue-Hua, Cui Kai, Liu Chuan-Yi, Guo Shou-Yu, Shijin Jiang, Xie Zhi-Jing
Six feline panleukopenia viruses (FPV) were detected in the intestinal samples from the 176 mink collected in China during 2015 to 2016, named MEV-SD1, MEV-SD2, MEV-SD3, MEV-SD4, MEV-SD5 and MEV-SD6. The VP2 genes of the isolates shared 98.9%-100% identity with the reference sequences. The substitution of residue V300A in VP2 protein differentiates the isolates from the reference MEVs, and A300 is a characteristic of FPV. Furthermore, phylogenetic analysis of VP2 genes indicated that the six isolates were clustered into the same branch of all the reference FPVs...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28620811/serological-molecular-and-clinical-correlates-of-dengue-from-a-tertiary-care-centre-in-chennai-india
#7
Vigna Seshan, Gopalsamy Sarangan, Khaleefathullah Sheriff, Kaveri Krishnasamy, Gunasekaran Palani, Padma Srikanth
Dengue disease is caused by dengue viruses 1-4 and has been ranked by the World Health Organisation (WHO) as the fastest spreading vector-borne viral disease. Dengue is often underreported and misdiagnosed due to a wide spectrum of clinical manifestations. Diagnosis of dengue is based on clinical case definitions and laboratory methods. Newer case definitions of dengue have been formulated by clinical studies in order to improve case detection. Owing to its epidemic potential, mortality and morbidity, there is a need for a rapid and accurate diagnostic assay for dengue in order to help the clinician in the early detection of cases and to prevent disease progression...
June 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28613145/two-novel-dromedary-camel-bocaparvoviruses-from-dromedaries-in-the-middle-east-with-unique-genomic-features
#8
Patrick C Y Woo, Susanna K P Lau, Hoi-Wah Tsoi, Nissy Georgy Patteril, Hazel C Yeung, Sunitha Joseph, Emily Y M Wong, Rubeena Muhammed, Franklin W N Chow, Ulrich Wernery, Kwok-Yung Yuen
The recent emergence of Middle East respiratory syndrome (MERS) coronavirus and its discovery from dromedary camels has boosted interest in the search for novel viruses in dromedaries. While bocaparvoviruses are known to infect various animals, it was not known that they exist in dromedaries. In this study, we describe the discovery of two novel dromedary camel bocaparvoviruses (DBoVs), DBoV1 and DBoV2, from dromedary faecal samples in Dubai. Among 667 adult dromedaries and 72 dromedary calves, 13.9 % of adult dromedaries and 33...
June 14, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28612703/evolutionary-analysis-of-whole-genome-sequences-confirms-inter-farm-transmission-of-aleutian-mink-disease-virus
#9
Emma E Hagberg, Anders G Pedersen, Lars E Larsen, Anders Krarup
Aleutian mink disease virus (AMDV) is a frequently encountered pathogen associated with mink farming. Previous phylogenetic analyses of AMDV have been based on shorter and more conserved parts of the genome, e.g. the partial NS1 gene. Such fragments are suitable for detection but are less useful for elucidating transmission pathways while sequencing entire viral genomes provides additional informative sites and often results in better-resolved phylogenies. We explore how whole-genome sequencing can benefit investigations of AMDV transmission by reconstructing the relationships between AMDV field samples from a Danish outbreak...
June 13, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28599640/dengue-type-4-in-rio-de-janeiro-brazil-case-characterization-following-its-introduction-in-an-endemic-region
#10
Manoela Heringer, Thiara Manuele A Souza, Monique da Rocha Q Lima, Priscila Conrado G Nunes, Nieli Rodrigues da C Faria, Fernanda de Bruycker-Nogueira, Thaís Chouin-Carneiro, Rita Maria R Nogueira, Flavia Barreto Dos Santos
BACKGROUND: Due to the populations' susceptibility, DENV-4 introduction in 2010 led to the occurrence of explosive epidemics in the following years in Brazil. In 2011, DENV-4 was identified in Rio de Janeiro (RJ) and it was prevalent in 2012 and 2013. Here, we aimed to characterize clinical, epidemiological and laboratorial aspects of DENV-4 cases after this serotype introduction in an endemic scenario. METHODS: Dengue suspected cases (n = 3727) were received and analyzed from January 2011 to December 2013, during outbreaks occurred in RJ, Brazil...
June 9, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28598047/awareness-and-outcome-of-changing-trends-in-clinical-profile-of-dengue-fever-a-retrospective-analysis-of-dengue-epidemic-from-january-to-december-2014-at-a-tertiary-care-hospital
#11
Jitendra Singh, Anju Dinkar, Virendra Atam, D Himanshu, Kamlesh Kumar Gupta, Kauser Usman, Ravi Misra
BACKGROUND: Dengue fever is caused by mosquito-borne arboviral infection that has become a public health concern globally. Recently, an alarming rise of dengue has also been seen in India. Hence the study was undertaken to know profile of clinical manifestations and laboratory findings during the evolution of dengue fever. METHODS: In this study, retrospective data analysis was done in 216 seropositive dengue patients admitted between January to December 2014 in department of medicine at a north Indian care hospital...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28595086/evaluation-of-different-pcr-primers-for-denaturing-gradient-gel-electrophoresis-dgge-analysis-of-fungal-community-structure-in-traditional-fermentation-starters-used-for-hong-qu-glutinous-rice-wine
#12
Xu-Cong Lv, Ya-Jun Jiang, Jie Liu, Wei-Ling Guo, Zhi-Bin Liu, Wen Zhang, Ping-Fan Rao, Li Ni
Denaturing gradient gel electrophoresis (DGGE) has become a widely used tool to examine microbial community structure. However, when DGGE is applied to evaluate the fungal community of traditional fermentation starters, the choice of hypervariable ribosomal RNA gene regions is still controversial. In the current study, several previously published fungal PCR primer sets were compared and evaluated using PCR-DGGE, with the purpose of screening a suitable primer set to study the fungal community of traditional fermentation starters for Hong Qu glutinous rice wine...
May 15, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28592796/immunochemical-approach-for-monitoring-of-structural-transition-of-apoa-i-upon-hdl-formation-using-novel-monoclonal-antibodies
#13
Hitoshi Kimura, Shiho Mikawa, Chiharu Mizuguchi, Yuki Horie, Izumi Morita, Hiroyuki Oyama, Takashi Ohgita, Kazuchika Nishitsuji, Atsuko Takeuchi, Sissel Lund-Katz, Kenichi Akaji, Norihiro Kobayashi, Hiroyuki Saito
Apolipoprotein A-I (apoA-I) undergoes a large conformational reorganization during remodeling of high-density lipoprotein (HDL) particles. To detect structural transition of apoA-I upon HDL formation, we developed novel monoclonal antibodies (mAbs). Splenocytes from BALB/c mice immunized with a recombinant human apoA-I, with or without conjugation with keyhole limpet hemocyanin, were fused with P3/NS1/1-Ag4-1 myeloma cells. After the HAT-selection and cloning, we established nine hybridoma clones secreting anti-apoA-I mAbs in which four mAbs recognize epitopes on the N-terminal half of apoA-I while the other five mAbs recognize the central region...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28591408/decrease-in-dengue-virus-2-infection-and-reduction-of-cytokine-chemokine-production-by-uncaria-guianensis-in-human-hepatocyte-cell-line-huh-7
#14
Cíntia da Silva Mello, Ligia Maria Marino Valente, Thiago Wolff, Raimundo Sousa Lima-Junior, Luciana Gomes Fialho, Cintia Ferreira Marinho, Elzinandes Leal Azeredo, Luzia Maria Oliveira-Pinto, Rita de Cássia Alves Pereira, Antonio Carlos Siani, Claire Fernandes Kubelka
BACKGROUND: Dengue fever may present hemorrhages and cavitary effusions as result of exacerbated immune responses. We investigated hydro-alcoholic extracts from leaves (UGL) and bark (UGB) of the medicinal species Uncaria guinanensis with respect to antiviral effects in Dengue virus (DENV) infection and in immunological parameters associated with in vivo physiopathological features. METHODS: Chemical profiles from UGB or UGL were compared in thin layer chromatography and 1H nuclear magnetic resonance using flavonoid compounds and a pentacyclic oxindole alkaloid-enriched fraction as references...
June 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28562637/identification-of-diagnostic-peptide-regions-that-distinguish-zika-virus-from-related-mosquito-borne-flaviviruses
#15
Alexandra J Lee, Roshni Bhattacharya, Richard H Scheuermann, Brett E Pickett
Zika virus (ZIKV) is a member of the Flavivirus genus of positive-sense single-stranded RNA viruses, which includes Dengue, West Nile, Yellow Fever, and other mosquito-borne arboviruses. Infection by ZIKV can be difficult to distinguish from infection by other mosquito-borne Flaviviruses due to high sequence similarity, serum antibody cross-reactivity, and virus co-circulation in endemic areas. Indeed, existing serological methods are not able to consistently differentiate ZIKV from other Flaviviruses, which makes it extremely difficult to accurately calculate the incidence rate of Zika-associated Guillain-Barre in adults, microcephaly in newborns, or asymptomatic infections within a geographical area...
2017: PloS One
https://www.readbyqxmd.com/read/28558609/reliability-and-construct-validity-of-the-portuguese-version-of-the-psychological-capital-questionnaire
#16
Ana Cristina Antunes, António Caetano, Miguel Pina E Cunha
The Psychological Capital Questionnaire (PCQ) is the most commonly used measure for assessing psychological capital in work settings. Although several studies confirmed its factorial validity, most validation studies only examined the four-factor structure preconized by Luthans, Youssef, and Avolio, not attending to empirical evidence on alternative factorial structures. The present study aimed to test the psychometric properties of the Portuguese version of the PCQ, by using two independent samples (NS1 = 542; NS2 = 115) of Portuguese employees...
June 2017: Psychological Reports
https://www.readbyqxmd.com/read/28554059/residues-f103-and-m106-within-the-influenza-a-virus-ns1-cpsf4-binding-region-regulate-interferon-stimulated-gene-translation-initiation
#17
Ben X Wang, Earl G Brown, Eleanor N Fish
Influenza A virus (IAV) non-structural protein 1 (NS1) suppresses host innate immune responses by inhibiting type I interferon (IFN) production. We provide evidence that residues F103 and M106 in the CPSF4-binding domain of A/HK/1/68 [H3N2] NS1 contribute to post-transcriptional inhibition of antiviral IFN-stimulated genes (ISGs), thereby suppressing an antiviral type I IFN response. Recombinant (r) IAVs encoding F103L and M106I mutations in NS1 replicate to significantly lower viral titers in human A549 lung epithelial cells and primary type II alveolar cells...
May 26, 2017: Virology
https://www.readbyqxmd.com/read/28549857/low-seroprevalence-of-zika-virus-in-cameroonian-blood-donors
#18
Bouba Gake, Marie A Vernet, Isabelle Leparc-Goffart, Jan Felix Drexler, Ernest A Gould, Pierre Gallian, Xavier de Lamballerie
A Zika virus seroepidemiology study was performed in 1084 blood donors collected from August to October 2015 in six sites of Cameroon representing a large panel of eco-environments. Samples were tested using an anti-NS1 IgG ELISA detection kit and positives were further confirmed by seroneutralization. The observed global seroprevalence was low (around 5%, peaking at 10% and 7.7% in Douala and Bertoua, respectively) with risk factors associated with seropositivity pointing to the existence of a local (peri-)sylvatic cycle of transmission...
May 23, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28544099/genetic-signatures-coupled-with-lineage-shift-characterize-endemic-evolution-of-dengue-virus-serotype-2-during-2015-outbreak-in-delhi-india
#19
Manish Chandra Choudhary, Ekta Gupta, Shvetank Sharma, Nadeem Hasnain, Pragya Agarwala
OBJECTIVE: In 2015 New Delhi witnessed a massive outbreak of Dengue virus (DENV) resulting in high morbidity and mortality. We report the molecular characterization of the dominant circulating DENV strain to understand its evolution and dispersal. MATERIALS AND METHODS: DENV infections were diagnosed by detection of IgM/NS1 antigen and serotyping was performed by C-PrM PCR. Envelope gene was amplified and variation(s) in envelope gene were analyzed. Phylogenetic tree construction, time-based phylogeny and origin of DENV were analyzed...
May 23, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28539654/quasispecies-composition-and-evolution-of-a-typical-zika-virus-clinical-isolate-from-suriname
#20
Sander van Boheemen, Ali Tas, S Yahya Anvar, Rebecca van Grootveld, Irina C Albulescu, Martijn P Bauer, Mariet C Feltkamp, Peter J Bredenbeek, Martijn J van Hemert
The arthropod-borne Zika virus (ZIKV) is currently causing a major international public health threat in the Americas. This study describes the isolation of ZIKV from the plasma of a 29-year-old female traveler that developed typical symptoms, like rash, fever and headache upon return from Suriname. The complete genome sequence including the 5' and 3' untranslated regions was determined and phylogenetic analysis showed the isolate clustering within the Asian lineage, close to other viruses that have recently been isolated in the Americas...
May 24, 2017: Scientific Reports
keyword
keyword
8539
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"