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1
Relationship between the molecular typing of Campylobacter strains and the prevalence of their virulence genes
100%
Wieczorek K.
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nr 2
193-198
EN
The aim of this study was to evaluate and compare two genotyping methods for the examination of genetic diversity in C. jejuni and C. coli strains isolated from poultry. Moreover, the molecular identification of putative virulence factors was additionally included to establish a correlation between the isolates. Both typing methods, RAPD-PCR and ERIC-PCR, were found to have a high discriminatory power, D=0.95 and 0.94, respectively. The isolates were clustered to 28 groups by RAPD-PCR and to 29 by ERIC- PCR. Sometimes the ERIC or RAPD assays were able to further discriminate the isolates, which had the same virulence profile generated by the second technique. These PCR-based differentiation methods demonstrated the potential for initial rapid epidemiology studies, and when used in conjunction with distribution of virulence markers provide a high resolution strategy for accurately defining subtypes of Campylobacter.
2
Kampylobakterioza - coraz większy problem dla zdrowia publicznego!
100%
Majewski M. , Racewicz P.
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2017
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nr 04
3
Survival rate of thermotolerant Campylobacter on poultry meat during microwave heating
100%
Uradzinski J. , Nyesvyetowa M.
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tom 12
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nr 1
EN
Survival rates of Campylobacter jejuni ATCC 33 291, Campylobacter jejuni PZH 38 and Campylobacter coli ATCC 43 478 in leg quarters (ca 330g) of chicken broilers after microwave heating (480 and 760 Watt) for 2, 4, 6, 8 and 10 minutes were determined. Heating the meat in a microwave oven (Moulinex, type Dialog cook) at 480 Watts caused a gradual decrease in the number of cells of the studied bacterial strains to total inactivation after 8 – 10 minutes of heating. Increasing the heating power to 760 Watts led to a decreased microwave heating time of 6 – 8 minutes for inactivation of all the cells of the studied C. jejuni/coli strains. These findings clearly indicate the dependence of effectiveness of inactivation of the bacteria studied on microwave heating power, heating duration and bacterial strain.
4
Antimicrobial resistance and virulence markers of Campylobacter jejuni and Campylobacter coli isolated from retail poultry meat in Poland
100%
Wieczorek K.
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nr 4
EN
The occurrence of Campylobacter in poultry meat and subsequent antibiotic resistance profiles of the isolates were investigated. The prevalence of Campylobacter in 101 samples was 87.1%. Of these samples, 54.5% contained Campylobacter coli and 45.5% were contaminated with Campylobacter jejuni. Among the strains tested, resistance to ciprofloxacin and nalidixid acid was the most common, followed by tetracycline and streptomycin. On the other hand, all analysed isolates were susceptible to erythromycin and gentamycin. Moreover, the prevalence of several virulence marker genes among Campylobacter isolates was estimated. All strains showed the presence of the flaA and cadF factors, whereas the iam was identified only in C. jejuni, while the cdtA, cdtB, and cdtC genes were amplified almost in all C. coli isolates.
5
Zastosowanie metod genotypowych w dochodzeniu pokrewienstwa izolatow paleczek Campylobacter coli wyhodowanych od chorego dziecka oraz od psa
100%
Wardak S. , Duda U. , Wojsa B.
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nr 3
235-241
6
Genetic characterisation of the cjaAB operon of Campylobacter coli
100%
Wyszynska A. , Pawlowski M. , Bujnicki J. , Pawelec D. , Van Putten J. P. M. , Brzuszkiewicz E. , Jagusztyn-Krynicka E. K.
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nr 2
EN
We investigated the regulation of the cjaA and cjaB genes of Campylobacter coll. These genes are seemingly arranged into one operon but appear to encode functionally different proteins i.e. an extracytoplasmic solute receptor and a MHS - metabolite: H⁺ symporter transport protein. Analysis of various transcriptional cjaA and/or cjaB lacZ fusion constructs revealed that both genes are arranged in an operon. RACE analysis located the transcription start site of the cjaAB operon 46 bp upstream of the translation start point. β-galactosidase reporter assays yielded much higher activity for the cjaA than the cjaB gene fusion products. RT-PCR showed unequal amounts of mRNA, indicating differential post-transcriptional processing of cjaA and cjaB mRNA possibly related to the presence of inverted repeats in the intergenic region. Phylogenetic analysis grouped CjaB into a new MHS sub-family together with potential transporters with uncharacterised functions of Campylobacter and Helicobacter. Notably, no CjaB family members were identified in ε-Proteobacteria from different ecological niches, such as H. hepaticas and Wolinella succinogenes.
7
Typowanie molekularne szczepow Campylobacter przy uzyciu technik opartych na reakcji lancuchowej polimerazy
85%
Wieczorek K. , Osek J.
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tom 07
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nr 2
29-39
8
Wystepowanie markerow zjadliwych iam w szczepach Campylobacter jejuni i Campylobacter coli izolowanych z tusz drobiowych
85%
Korsak D. , Dzierzanowska-Fangrat K. , Popowski J. , Rozynek E.
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nr 4
307-312
PL
Z tusz kurcząt izolowano termotolerancyjne szczepy Campylobacter, określano ich przynależność gatunkową, a następnie badano w nich obecność sekwencji DNA kojarzonej z inwazyjnymi właściwościami tych szczepów.
EN
Previously found DNA sequence (iam), correlated with the invasiveness of Campylobacter strains, became a starting point for present investigation. Main goal of this study was to isolate number of Campylobacter strains from chicken carcasses, to determine their taxonomie position and to establish the presence of iam sequence in their genoms. It was found, that invasion associated marker is present in all Campylobacter coli strains and in majority but not all Campylobacter jejuni. This may confirm the idea that the marker is not only responsible for diarrhea in humans but also may be important in the colonization of chicken guts.
9
Campylobacter i kampylobakteriozy
80%
Daczkowska-Kozon E.
Bezpieczeństwo i Higiena Żywności
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2005
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nr 07
34-35
10
Content available The viability of the genetically diverse C. jejuni and C. coli strains in the macrophage J774 cell line
80%
Krutkiewicz A. , Klimuszko D.
Polish Journal of Veterinary Sciences
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2012
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tom 15
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nr 1
EN
The intracellular survival of Campylobacter has been described within epithelial cells as well as in macrophages in vitro. The goal of this study was to estimate the viability of the genetically diverse C. jejuni and C. coli strains in the macrophage J774 cell line. Strains selected for analysis differed with regard to the occurrence of genes encoding specific virulence factors. The present work indicates that was no correlation between the source of isolates and relative intracellular survival.
11
Content available Kampylobakteriozy u ludzi i zwierzat
80%
Krutkiewicz A.
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nr 04
285-288
12
Susceptibility of Campylobacter jejuni and Compylobacter coli isolated from animals and humans to ciprofloxacin
80%
Tambur Z. , Miljkovic-Selimovic B. , Bokonjic D. , Kulisic Z.
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nr 2
269-273
EN
Fifty five thermophilic Campylobacter spp. strains were isolated from the caecum of broilers, cecum and colon of pigs and from human faeces. The strains were identified as Campylobacter jejuni and Campylobacter coli. The more prevalent species in humans and broilers was Campylobacter jejuni, and in pigs Campylobacter coli. In the framework of this study, sensitivity to ciprofloxacin in isolated strains of Campylobacter jejuni and Campylobacter coli was tested by E-test. Resistant to ciprofloxacin were 50.0% of 24 thermophilic Campylobacter strains isolated from humans. In 16 tested strains isolated from broilers, 56.2% were resistant to ciprofloxacin. More resistant species was Campylobacter coli (83.3%). In 15 strains of thermophilic Campylobacter spp. isolated from pigs, the percentage of resistant strains was 26.7%, a relatively high percentage considering the quinolones have not been extensively used in swine farming compared to poultry farming.
13
Content available Choroby odzwierzęce i ich czynniki etiologiczne w raporcie Europejskiego Urzędu do spraw Bezpieczeństwa Żywności za 2007 r.
51%
Osek J. , Wieczorek K.
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nr 05
14
Content available Choroby odzwierzęce i ich czynniki etiologiczne w raporcie Europejskiego Urzędu do spraw Bezpieczeństwa Żywności za 2008 r.
51%
Osek J. , Wieczorek K.
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nr 04
15
Zoonozy i ich czynniki etiologiczne w swietle raportu EFSA za 2005 r.
51%
Osek J.
Życie Weterynaryjne
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2007
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tom 82
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nr 04
294-301
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