Serogrouping, phylotyping, and virulence genotyping of commensal and avian pathogenic Escherichia coli isolated from broilers in Hamedan, Iran

Goudarztalejerdi, Ali; Mohammadzadeh, Abdolmajid; Najafi, Sajad Varmaziar; Nargesi, Farangis; Joudari, Sara

doi:10.1016/j.cimid.2020.101558

Cited by 13 publications

(7 citation statements)

References 33 publications

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“…Gene prevalence was similar to that highlighted by Sgariglia et al in central Italy [ 7 ]. The Iss gene displayed a high prevalence in many other studies, both in APEC and non-APEC strains [ 15 , 16 , 18 , 34 ]. The recurrency of Iss might be related to the importance of this specific gene for the pathogenesis of colibacillosis, as it encodes for a lipoprotein that plays a major role in resistance against phagocytosis.…”

Section: Discussionmentioning

confidence: 89%

“…A study carried out in France identified 12 different serogroups, with the most frequently isolated ones being serogroups O2, O8, O25 and O78 [ 13 ]; likewise, a Greek survey mainly identified O78, O2 and O11 [ 14 ]. Studies from different Asian countries highlight a high prevalence of serogroups O78 and O2 [ 15 , 16 ], but also O1 and O18 displayed a relevant prevalence [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Virulence Factors and Antimicrobial Resistance Profile of Escherichia Coli Isolated from Laying Hens in Italy

Gambi

Rossini

Menandro

et al. 2022

Animals

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Colibacillosis is the most common bacterial disease in the poultry industry. The isolation of Escherichia coli (E. coli) strains with multiple resistance to various classes of antimicrobials has been increasing in recent years. In this study, antimicrobial resistance features, serotyping and the presence of avian pathogenic Escherichia coli (APEC) virulence genes were investigated on a total of 71 E. coli strains isolated during outbreaks of colibacillosis in laying hens. The correlation between these features was evaluated. The most frequently isolated serogroups were O2 and O88. Resistance was often detected with nalidixic acid (49%) and ampicillin (38%), while all strains were sensitive to ceftiofur and florfenicol. Overall, 25% of the isolates showed resistance to at least three or more antimicrobial classes (multidrug-resistant strains), and 56% of the isolates were defined as APEC strains (due to the presence of at least five virulence genes). Correlation between the different parameters (virulence genes, serogroup and antimicrobial resistance) did not reveal relevant associations. The comparison of the obtained results with those of similar studies highlighted the importance of continuous monitoring in order to have a better understanding of colibacillosis. An evaluation of the national epidemiological situation would allow, especially with regard to antimicrobial resistance, to focus on the right measures in order to prioritize the available resources for effective disease control.

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Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Virulence Factors and Antimicrobial Resistance Profile of Escherichia Coli Isolated from Laying Hens in Italy

Gambi

Rossini

Menandro

et al. 2022

Animals

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“…In this study, most isolates belonged to phylogroup B1, which is understandable since E. coli from groups B1 and A occur most frequently in animals, and they are usually commensal and resistant to antimicrobial agents [ 64 ]. In contrast, Escherichia coli isolates belonging to groups E and D are considered more pathogenic to broilers than those belonging to groups B or A [ 65 ].…”

Section: Discussionmentioning

confidence: 99%

Phenotypic and genotypic characterization of Escherichia coli isolated from the chicken liver in relation to slaughterhouse conditions

Gharaibeh,

Al Sheyab,

Malkawi

et al. 2024

Heliyon

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“…2016; Goudarztalejerdi et al . 2020). The oligonucleotide sequence and more details of primers are described in Table S2.…”

Section: Methodsmentioning

confidence: 99%

“…Primer sequences for ARGs detection were from previously published studies (Mazel et al 2000;Robicsek et al 2006;Ibekwe et al 2011), the primers sequence, amplicon sizes and thermal cycling conditions are summarized in Table S2. Master mix preparation and PCR amplification were carried out according to the previously described protocol (Goudarztalejerdi et al 2022).…”

Section: Pcr Detection Of Integrons Genes and Argmentioning

confidence: 99%

Antibiotic resistance and virulence factor gene profile of A. hydrophila isolated from carp (Cyprinidae) suspected with hemorrhagic septicemia in Gilan, Iran

Goudarztalejerdi

Yavari

Kalourazi

et al. 2022

Letters in Applied Microbiology

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Significance and Impact of the Study: Hemorrhagic septicemia is one of the most important diseases affecting the aquaculture industry, and the aeromonads are known as main causative agent of hemorrhagic septicemia in carp. This study revealed a high frequency of multi-drug resistance (MDR) and virulence factor genes (VFGs) among the Aeromonas hydrophila isolates from carp suspected with hemorrhagic septicemia, and highlighted the role of contaminated carp as reservoirs for more virulent and MDR isolates, which can represent a potential significant public health risk via seafood-borne infections. Also, the incidence of integrons in these isolates suggests the possibile role of transposable elements in the horizontal transfer of antibiotic resistance genes (ARGs) and VFGs between bacteria.

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Serogrouping, phylotyping, and virulence genotyping of commensal and avian pathogenic Escherichia coli isolated from broilers in Hamedan, Iran

Cited by 13 publications

References 33 publications

Virulence Factors and Antimicrobial Resistance Profile of Escherichia Coli Isolated from Laying Hens in Italy

Virulence Factors and Antimicrobial Resistance Profile of Escherichia Coli Isolated from Laying Hens in Italy

Phenotypic and genotypic characterization of Escherichia coli isolated from the chicken liver in relation to slaughterhouse conditions

Antibiotic resistance and virulence factor gene profile of A. hydrophila isolated from carp (Cyprinidae) suspected with hemorrhagic septicemia in Gilan, Iran

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