Characterization of antimicrobial resistance of foodborne Listeria monocytogenes

Conter, Mauro; Paludi, Domenico; Zanardi, Emanuela; Ghidini, Sergio; Vergara, Alberto; Ianieri, Adriana

doi:10.1016/j.ijfoodmicro.2008.10.018

Cited by 188 publications

(171 citation statements)

References 24 publications

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“…are not resistant to vancomycin. Our results agree with those of Conter et al, (2009) andHarakeh et al, (2009) who also found Listeria spp. isolates resistant to vancomycin in their studies.…”

Section: Discussionsupporting

confidence: 93%

Prevalence and antimicrobial resistance of Listeria monocytogenes isolated from raw milk and dairy products

Gohar¹,

Abbas²,

sajid³

et al. 2017

Matrix sci. medica

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Listeriosis is a severe foodborne disease commonly caused by eating contaminated food with the Listeria species. A large variety of foods, especially dairy foods and ready-to-eat products, can support the growth of pathogens. Outbreaks of listeriosis have been related with milk, cheese, vegetable salads, and meat products, and fatality rates are typically around 20% due to listeriosis. The Centers for Disease Control and Prevention evaluates that 2500 infections and more than 500 deaths are related with listeriosis each year in the United States. A total 125 milk and dairy products were included in the study. Isolation and identification of this specie was done and then confirmed it by gram staining. Antimicrobial sensitivity was also checked. Prevalence of Listeria species were 16.8%, Listeria monocytogenes was 13.6%. Listeria monocytogenes was resistant against Ampicillin, Amoxicillin, Penicillin and sensitive Fosfomycin, Ciprofloxacin, Gentamycin. The results of this study showed the low prevalence of Listeria monocytogenes.

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Section: Discussionsupporting

confidence: 93%

Prevalence and antimicrobial resistance of Listeria monocytogenes isolated from raw milk and dairy products

Gohar¹,

Abbas²,

sajid³

et al. 2017

Matrix sci. medica

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“…Although natural resistance to thirdand fourth-generation cephalosporins was observed, the tested Listeria isolates were susceptible to the antibiotics that are currently used to treat listeriosis (i.e., penicillin, ampicillin, gentamycin, and trimethoprimsulfamethoxazole); consequently, these isolates do not represent any risk when these traditional treatments are used. However, certain L. monocytogenes, L. innocua, L. seeligeri, and L. welshimeri isolates were resistant to oxacillin, clindamycin, and daptomycin, which are antibiotics that are widely used in hospitals to treat Gram-positive infections [10]. This study confirms the emergence of Listeria spp.…”

Section: Discussionsupporting

confidence: 70%

“…However, increasing reports of Listeria strains isolated from various sources that are resistant to penicillin, ampicillin, tetracycline, streptomycin, clindamycin, and even oxacillin and vancomycin represent a major public health concern [9][10][11]. The genetic mechanisms responsible for these resistances are an important research topic, given that L. monocytogenes can acquire resistance genes from, and transfer them to, enterococci, staphylococci, and streptococci [12,13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of antibiotic resistance in Listeria spp. isolated from slaughterhouse environments, pork and human infections

Moreno

Paixão

Gobbi

et al. 2014

J Infect Dev Ctries

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Introduction: Listeria species are susceptible to most antibiotics. However, over the last decade, increasing reports of multidrug-resistant Listeria spp. from various sources have prompted public health concerns. The objective of this study was to characterize the antibiotic susceptibility of Listeria spp. and the genetic mechanisms that confer resistance. Methodology: Forty-six Listeria spp. isolates were studied, and their minimal inhibitory concentrations of antibiotics were determined by microdilution using Sensititre standard susceptibility MIC plates. The isolates were screened for the presence of gyrA, parC, lde, lsa(A), lnu(A), and mprF by PCR, and the amplified genes were sequenced. Results: All isolates were susceptible to penicillin, ampicillin, tetracycline, erythromycin, and carbapenems. Resistance to clindamycin, daptomycin, and oxacillin was found among L. monocytogenes and L. innocua, and all species possessed at least intermediate resistance to fluoroquinolones. GyrA, parC, and mprF were detected in all isolates; however, mutations were found only in gyrA sequences. A high daptomycin MIC, as reported previously, was observed, suggesting an intrinsic resistance of Listeria spp. to daptomycin. Conclusions: These results are consistent with reports of emerging resistance in Listeria spp. and emphasize the need for further genotypic characterization of antibiotic resistance in this genus.

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“…Recent reports show an increased rate of resistance to one or more clinically relevant antibiotics in environmental L. monocytogenes isolates (Charpentier et al, 1995;Conter et al, 2009) and, less frequently, in clinical strains (Safdar and tains higher levels of antibacterial compounds active against L. monocytogenes than do other seaweeds. Also, these results are in line with the study by Cox et al (2010) of the antimicrobial properties of several Irish edible brown seaweeds and reported good antibacterial activities against L. monocytogenes for MeOH extracts of the seaweed Laminaria digitata.…”

Section: Antibiotic Resistance Of L Monocytogenes Strainsmentioning

confidence: 99%

Synergistic Antibacterial Activity of Ecklonia cava (Phaeophyceae: Laminariales) against Listeria monocytogenes (Bacillales: Listeriaceae)

Nshimiyumukiza¹,

Kang²,

Kim³

et al. 2015

Fisheries and aquatic sciences

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In an effort to discover alternative antimicrobials against Listeria monocytogenes, several marine algae were screened. The methanolic extract of Ecklonia cava exhibited the highest antibacterial activity against L. monocytogenes, with the ethyl acetate (EtOAc) soluble fraction of E. cava methanolic extract having a MIC value of 256 µg/mL and a MBC value of 512 µg/mL. The MIC values of streptomycin in combination with the EtOAc fraction were markedly reduced up to 64-fold, suggesting that the antibacterial activity of the antibiotic was restored when combined with the EtOAc fraction. The interaction between streptomycin and the EtOAc fraction was assessed by fractional inhibitory concentration (FIC) indices. The combination of streptomycin and the EtOAc fraction against L. monocytogenes resulted in ∑FIC min range of 0.141 to 0.266 and ∑FIC max of 0.531 for all strains. The median ∑FIC against L. monocytogenes strains ranged from 0.172 to 0.344. Thus, synergistic ranges of FIC <1 were observed for all combinations of streptomycin and the EtOAc fraction against L. monocytogenes strains. Indeed, the median ∑FIC of streptomycin-EtOAc fraction ranged from 0.172 to 0.344, suggesting a marked synergy.

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Characterization of antimicrobial resistance of foodborne Listeria monocytogenes

Cited by 188 publications

References 24 publications

Prevalence and antimicrobial resistance of Listeria monocytogenes isolated from raw milk and dairy products

Prevalence and antimicrobial resistance of Listeria monocytogenes isolated from raw milk and dairy products

Characterization of antibiotic resistance in Listeria spp. isolated from slaughterhouse environments, pork and human infections

Synergistic Antibacterial Activity of Ecklonia cava (Phaeophyceae: Laminariales) against Listeria monocytogenes (Bacillales: Listeriaceae)

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