Multidrug resistant clones of Salmonella Infantis of broiler origin in Europe

Nógrády, Noémi; Király, Margit; Davies, Rob; Nagy, Béla

doi:10.1016/j.ijfoodmicro.2012.04.007

Cited by 71 publications

(88 citation statements)

References 16 publications

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“…Increasing antimicrobial resistance in non-typhoid Salmonella species has been a serious problem for public health [11,12]. Antibiotic resistance profiles of food-originated DMC coded 13 S. Infantis isolates, determined in the present study are compatible with the previous findings [13][14][15]. The most prevalent resistances, found in the multidrug-resistant DMC coded S. Infantis strains, were to nalidixic acid (100%) and spectinomycin (100%).…”

Section: Resultssupporting

confidence: 89%

“…The most prevalent resistances, found in the multidrug-resistant DMC coded S. Infantis strains, were to nalidixic acid (100%) and spectinomycin (100%). Previous reports indicated the potential emergence of quinolone resistance in Salmonella [14,[16][17][18]. It is known that isolates with nalidixic acid resistance have commonly decreased susceptibility to ciprofloxacin.…”

Section: Resultsmentioning

confidence: 99%

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Effects of sub-MIC antibiotic concentrations on biofilm production of Salmonella Infantis

Tezel

Akçelik

Yüksel

et al. 2016

Biotechnology & Biotechnological Equipment

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In the present study, 13 Salmonella Infantis strains, which have been originated from Turkey, were selected due to their clinical and industrial relevance, sufficient biofilm producing capability and multidrug resistance. Although all tested strains were built up of thin pellicle, optimum pellicle formation has occurred at 28 C. All S. Infantis biofilms were categorized as 'bdar' morphotype following the incubation at both 20 and 28 C, while they were categorized as 'saw' morphotype at 37 C. Under a certain incubation temperature (28 C), 84.62% of strains have formed strong biofilm structures. By using the disk diffusion method, high levels of resistance have been observed among tested bacteria against nalidixic acid (100%), spectinomycin (100%), streptomycin (92.3%), tetracycline (92.3%), kanamycin (76.9%) and neomycin (76.9%). Further studies were performed with S. Infantis DMC 12 strain, due to its capability to produce biofilm and multidrug resistance phenotype. Gentamycin (>64 mg/mL, 2 £ MIC) and tetracycline (>128 mg/mL, 4 £ MIC) were determined as the most effective antibiotics against biofilm formation. The biofilm forms have showed increased antimicrobial resistance when it was compared to the planktonic bacteria. The highest resistance rates of the biofilm bacteria were observed to neomycin (12 £ MIC) followed by spectinomycin (10 £ MIC) and streptomycin (10 £ MIC). Biofilm structure was induced as a result of nalidixic acid, spectinomycin, tetracycline and neomycin treatment at sub-MIC concentrations of tested antibiotics.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Effects of sub-MIC antibiotic concentrations on biofilm production of Salmonella Infantis

Tezel

Akçelik

Yüksel

et al. 2016

Biotechnology & Biotechnological Equipment

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“…S. Infantis has been reported in food borne outbreaks (mainly poultry products) around the world (Miller et al, 2010). Furthermore, multidrug-resistant S. Infantis has been frequently reported (Dahshan et al, 2010, Dionisi et al, 2011, Gal-Mor et al, 2010and Nogrady et al, 2012. The minimum inhibitory concentrations (MICs) of the S. Infantis strain were measured using a published protocol (Andrews, 2001) and determined to be 8 mg/L for oxytetracycline, >256 mg/L for sulfamethoxazole, and >256 mg/L for lincomycin.…”

Section: Chemicalsmentioning

confidence: 99%

Concomitant uptake of antimicrobials and Salmonella in soil and into lettuce following wastewater irrigation

Sallach

Zhang

Hodges

et al. 2015

Environmental Pollution

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“…In the phage-typing scheme of Laszlo et al [27], PT213 is equivalent to PT29 according to the phage-typing scheme presented in this work. Furthermore, results of other studies indicated the dissemination of an epidemic multidrug-resistant clone of S. Infantis from broilers in Germany, Hungary, Austria, and Poland [30]. However, it can only be hypothesized that the multidrug-resistant clone PT29/XB05 in the present study corresponds to the multidrug-resistant clone described by Nógrády et al [30].…”

Section: Discussionmentioning

confidence: 40%

“…Furthermore, results of other studies indicated the dissemination of an epidemic multidrug-resistant clone of S. Infantis from broilers in Germany, Hungary, Austria, and Poland [30]. However, it can only be hypothesized that the multidrug-resistant clone PT29/XB05 in the present study corresponds to the multidrug-resistant clone described by Nógrády et al [30]. The presence of a plasmid conferring multidrug resistance could have facilitated the rapid spread of this multidrug-resistant clone in humans and livestock.…”

Section: Discussionmentioning

confidence: 94%

Typing ofSalmonella entericaserovar Infantis isolates from 51 outbreaks in Germany between 1974 and 2009 by a novel phage-typing scheme

et al. 2013

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SUMMARYWe developed a new phage-typing method and evaluated its application in combination with XbaI macrorestriction analysis by pulsed-field gel electrophoresis (PFGE) as a useful tool for the long-term epidemiology of Salmonella enterica serovar Infantis. In this study, we investigated 1008 S. Infantis isolates recovered from humans, various animal species and food products from 1973 to 2009. The typing scheme is based on 17 typing phages, defining 61 different patterns within the strain collection. The experiments showed that phage typing is a reliable method for differentiation of outbreaks and sporadic clinical cases as well as for elucidation of chains of transmission. The combined analysis of phage typing and PFGE revealed the existence of epidemic clones with a high stability over time like PT29/XB27 which was identified in nosocomial salmonellosis, community outbreaks as well as in broiler chickens from 2002 to 2009.

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Multidrug resistant clones of Salmonella Infantis of broiler origin in Europe

Cited by 71 publications

References 16 publications

Effects of sub-MIC antibiotic concentrations on biofilm production of Salmonella Infantis

Effects of sub-MIC antibiotic concentrations on biofilm production of Salmonella Infantis

Concomitant uptake of antimicrobials and Salmonella in soil and into lettuce following wastewater irrigation

Typing ofSalmonella entericaserovar Infantis isolates from 51 outbreaks in Germany between 1974 and 2009 by a novel phage-typing scheme

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