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Wyszukujesz frazę "avian influenza H5N1" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Expression of avian influenza haemagglutinin (H5) and chicken interleukin 2 (chIL-2) under control of the ptcB promoter in Lactococcus lactis
Autorzy:
Szatraj, Katarzyna
Szczepankowska, Agnieszka
Sączyńska, Violetta
Florys, Katarzyna
Gromadzka, Beata
Łepek, Krzysztof
Płucienniczak, Grażyna
Szewczyk, Bogusław
Zagórski-Ostoja, Włodzimierz
Bardowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1039270.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Lactococcus lactis
ptcB promoter
heterologous gene expression
avian influenza H5N1
H5 haemagglutinin
chicken interleukin-2
Opis:
Gram-positive and nonpathogenic lactic acid bacteria (LAB) are considered to be promising candidates for the development of new, safe systems of heterologous protein expression. Recombinant LAB has been shown to induce specific local and systemic immune response against selected pathogens, and could be a good alternative to classical attenuated carriers. The main goal of our study was to express the avian influenza haemagglutinin (H5) and chicken interleukin 2 (chIL-2) in Lactococcus lactis. Results of this study were anticipated to lead to construction of lactococcal strain(s) with potential vaccine properties against the avian influenza A (H5N1) virus. Expression of the cloned H5 gene, its His-tagged variant and chIL-2 gene, under the control of the ptcB gene promoter was attested by RT-PCR on transcriptional level and Western or dot blot analysis on translational level, demonstrating that system can be an attractive solution for production of heterologous proteins. The results of the preliminary animal trial conducted in mice are a promising step toward development of a vaccine against avian bird flu using Lactococcus lactis cells as antigen carriers.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 609-614
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Avian influenza in Poland
Autorzy:
Śmietanka, Krzysztof
Minta, Zenon
Powiązania:
https://bibliotekanauki.pl/articles/1039245.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
avian influenza
H5N1 virus
Opis:
Poland has experienced four episodes of avian influenza (AI) outbreaks over the past two decades. The first epidemic was caused by a low pathogenicity (LPAIV) H7N7 subtype and occurred in fattening and breeder turkeys in 1995. Two waves of H5N1 high pathogenicity avian influenza (HPAI) took place in 2006 and 2007. In spring 2006, 64 cases of the H5N1 virus were detected, mostly in mute swans. In December 2007, ten outbreaks of H5N1 HPAI were detected in commercial poultry (n=9) and wild birds kept in captivity (n=1). The outbreaks in 2006 and 2007 were caused by genetically similar but clearly distinguishable viruses of the 2.2 clade. In 2013, an H9N2 avian influenza virus was detected in 4 fattening turkey holdings. The virus was low pathogenic and a phylogenetic study has shown a close relatedness to the Eurasian lineage of AIV of the wild bird origin. Neither preventive nor prophylactic vaccinations have ever been used in poultry or other birds. Emergency vaccinations using autogenous vaccine were introduced only to control the H7N7 LPAI outbreaks in 1995. The baseline surveillance for AI in live migratory birds and poultry provides a valuable insight into the ecology of AIV at the wild and domestic bird interface. Passive surveillance is in place of early detection of HPAIV infection in dead or moribund birds.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 453-457
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibody response to DNA vaccine against H5N1 avian influenza virus in broilers immunized according to three schedules
Autorzy:
Stachyra, Anna
Góra-Sochacka, Anna
Zagórski-Ostoja, Włodzimierz
Król, Ewelina
Sirko, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1039267.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Avian influenza
H5N1
DNA vaccine
broilers
Opis:
Broiler type chickens were immunized intramuscularly with a DNA vaccine encoding hemagglutinin (HA) from H5N1 avian influenza virus. The chickens were divided into four groups: control group which was not immunized, a group which obtained only one dose, and two groups which were immunized twice, one group with a boost two weeks after the priming and the other four weeks. Blood samples were collected at several time points and the dynamics of the humoral response to the vaccine was studied. High level of anti-HA antibodies was detected only in the last two groups, that is in chickens immunized according to the prime-boost strategy, regardless of the schedule. An additional interesting observation of this study was detection of the cross-reactivity of an anti-H5 HA positive serum with H5N2 and H1N1 viruses, suggesting that the DNA vaccine tested can induce antibodies of a broad specificity.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 593-596
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression, purification and characterization of glycosylated influenza H5N1 hemagglutinin produced in Pichia pastoris
Autorzy:
Kopera, Edyta
Dwornyk, Angela
Kosson, Piotr
Florys, Katarzyna
Sączyńska, Violetta
Dębski, Janusz
Cecuda-Adamczewska, Violetta
Szewczyk, Bogusław
Zagórski-Ostoja, Włodzimierz
Grzelak, Krystyna
Powiązania:
https://bibliotekanauki.pl/articles/1039268.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Avian influenza
H5N1
recombinant hemagglutinin
Pichia pastoris
Opis:
The A/swan/Poland/305-135V08/2006 (H5N1-subtype) hemagglutinin (HA) gene was cloned and expressed in yeast Pichia pastoris (P. pastoris). The HA cDNA lacking the C-terminal transmembrane anchor-coding sequence was fused to an α-factor leader peptide and placed under control of the methanol-inducible P. pastoris alcohol oxidase 1 (AOX1) promoter. Two P. pastoris strains: SMD 1168 and KM 71 were used for protein expression. Recombinant HA protein was secreted into the culture medium reaching an approximately 15 mg/L (KM 71 strain). Fusion protein with a His6 tag was purified to homogeneity in one step affinity chromatography. SDS-PAGE and MS/MS analysis indicated that the protein is cleaved into HA1 and HA2 domains linked by a disulfide bond. Analysis of the N-linked glycans revealed that the overexpressed HA is fully glycosylated at the same sites as the native HA in the vaccine strain. Immunological activity of the hemagglutinin protein was tested in mice, where rHA elicited a high immune response.
Źródło:
Acta Biochimica Polonica; 2014, 61, 3; 597-602
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing of human specimens for the presence of highly pathogenic zoonotic avian influenza virus A [H5N1] in Poland in 2006-2008 - justified or unnecessary steps?
Autorzy:
Romanowska, M
Nowak, I.
Brydak, L.B.
Wojtyla, A.
Powiązania:
https://bibliotekanauki.pl/articles/50626.pdf
Data publikacji:
2009
Wydawca:
Instytut Medycyny Wsi
Tematy:
avian influenza virus type A
zoonosis
influenza
H5N1 subtype
avian influenza
disease outbreak
diagnostic test
Polska
Źródło:
Annals of Agricultural and Environmental Medicine; 2009, 16, 2; 239-247
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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