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Wyszukujesz frazę "virulence gene" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Analysis of occurrence of virulence genes among Yersinia enterocolitica isolates belonging to different biotypes and serotypes
Autorzy:
Kot, B
Piechota, M.
Jakubczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/32221.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
virulence gene
occurrence
Yersinia enterocolitica
isolate
biotype
serotype
polymerase chain reaction
ystB gene
myfA gene
man
pig
isolation
Opis:
The 150 Y. enterocolitica strains isolated from humans and from pigs belonged to biotypes 4 (68.7%), 1A (18.7%) and 2 (4%), or were biochemically untypeable (8.6%). Biotype 4 was comprised of Y. enterocolitica strains representing serotype 0:3, within biotype 1A the strains either belonged to serotypes 0:5 and 0:6 or were untypeable, and biotype 2 was represented by the strains of serotype 0:9. The strains which were biochemically untypeable belonged to serotypes 0:5, 0:6 and 0:3. Among the strains tested there also were those of an unidentified biotype and serotype. Nearly all the strains of biotype 1A represented genotype ystB+myfA+, and few belonged to genotype ystB+. The presence of the ystB gene in the strains of biotype 1A and only occasional occurrence of the gene in the other biotypes makes ystB a distinguishing marker of biotype 1A. The strains of genotype ystA+ail+myfA+yadA+ predominated in biotype 4 (serotype 0:3). The strains of biotype 2 (serotype 0:9) represented genotype ystA+ail+myfA+, and the plasmid yadA gene was detected in some of them. Within the group of biochemically untypeable strains ystB- and myfA-specific PCR products were mainly obtained. The genotypes determined for the tested biotypes and serotypes of Y. enterocolitica, based upon the selected genes of virulence, can be applied as distinguishing markers and indicators of the potential virulence of Y. enterocolitica strains, excluding bioserotyping.
Źródło:
Polish Journal of Veterinary Sciences; 2010, 13, 1; 13-19
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibiotic resistance genes and virulence factors in Enterococcus faecium and Enterococcus faecalis from diseased farm animals: pigs, cattle and poultry
Autorzy:
Seputiene, V.
Bogdaite, A.
Ruzauskas, M.
Suziedeliene, E.
Powiązania:
https://bibliotekanauki.pl/articles/32461.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antibiotic resistance
resistance gene
virulence factor
Enterococcus faecium
Enterococcus faecalis
farm animal
animal disease
pig
cattle
poultry
Opis:
Eighty enterococcal isolates (E. faecium, n=38, E. faecalis, n=42) from diseased farm animals (swine, cattle, poultry) in Lithuania have been studied for the prevalence of antibiotic resistance and for resistance and virulence genetic determinants. 86% of E. faecium and 71% of E. faecalis isolates were multidrug resistant (resistant to three or more unrelated antibiotics). Resistance to aminoglycosides, tetracycline and erythromycin was found most frequently in both species (61%, 69%) and was linked to aph(3’)-IIIa, aac(6’)-Ie-aph(2”)-Ia, ant(6)-Ia (aminoglycoside resistance), tetM, tetL (tetracycline resistance), ermA, ermB (erythromycin resistance) gene combinations, which were supplemented with chloramphenicol resistance genes catA7, catA8 (E. faecalis) and catA9 (E. faecium). All E. faecalis isolates harboured genes coding for virulence factors agg, esp, fsr gelE alone or in combinations with the high prevalence of esp gene in isolates from cattle (63%) and pigs (79%). The origin- dependent incidence of agg gene variants prgB and asp1 was observed. The results indicate the existence of a large pool of potentially virulent and multidrug resistant E. faecalis in diseased farm animals posing risk to humans.
Źródło:
Polish Journal of Veterinary Sciences; 2012, 15, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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