Occurrence and antimicrobial resistance patterns of Listeria monocytogenes isolated from vegetables

Byrne, Vanessa de Vasconcelos; Hofer, Ernesto; Vallim, Deyse Christina; Almeida, Rogéria Comastri de Castro

doi:10.1016/j.bjm.2015.11.033

Cited by 51 publications

(29 citation statements)

References 31 publications

(48 reference statements)

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“…This same modulator was related to the activation of antimicrobial activity of Streptomyces coelicolor extracts against five bacterial strains. 34 Recently, Byrne and colleagues 35 demonstrated the occurrence of L. monocytogenes in vegetables and the resistance of some strains to tetracycline and penicillin G, important antibiotics commercialized. These finding raises the importance of the screening of new sources of antimicrobial products with potential activity toward L. monocytogenes as described in this work.…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi

Lima

Santos

Bastos

et al. 2018

Brazilian Journal of Microbiology

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Major health challenges as the increasing number of cases of infections by antibiotic multiresistant microorganisms and cases of Alzheimer's disease have led to searching new control drugs. The present study aims to verify a new way of obtaining bioactive extracts from filamentous fungi with potential antimicrobial and acetylcholinesterase inhibitory activities, using epigenetic modulation to promote the expression of genes commonly silenced. For such finality, five filamentous fungal species (Talaromyces funiculosus, Talaromyces islandicus, Talaromyces minioluteus, Talaromyces pinophilus, Penicillium janthinellum) were grown or not with DNA methyltransferases inhibitors (procainamide or hydralazine) and/or a histone deacetylase inhibitor (suberohydroxamic acid). Extracts from T. islandicus cultured or not with hydralazine inhibited Listeria monocytogenes growth in 57.66 ± 5.98% and 15.38 ± 1.99%, respectively. Increment in inhibition of acetylcholinesterase activity was observed for the extract from P. janthinellum grown with procainamide (100%), when compared to the control extract (39.62 ± 3.76%). Similarly, inhibition of acetylcholinesterase activity increased from 20.91 ± 3.90% (control) to 92.20 ± 3.72% when the tested extract was obtained from T. pinophilus under a combination of suberohydroxamic acid and procainamide. Concluding, increases in antimicrobial activity and acetylcholinesterase inhibition were observed when fungal extracts in the presence of DNA methyltransferases and/or histone deacetylase modulators were tested.

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Section: Discussionmentioning

confidence: 99%

Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi

Lima

Santos

Bastos

et al. 2018

Brazilian Journal of Microbiology

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“…Unlike what occurs in some northern hemisphere countries, L. monocytogenes belonging to serotype 4b appears to be prevalent in foods from several South American countries including Uruguay. 13 , 33 , 40 Therefore, it would be interesting to perform other studies to test for a possible hemispheric correlation with L. monocytogenes serotypes. Especially taking into account the ability of this serotype to produce severe illnesses and also considering that some investigators suggest that 4b serotype strains may have a higher tendency to cause outbreaks when they are present in foods.…”

Section: Discussionmentioning

confidence: 99%

Prevalence and serotype distribution of Listeria monocytogenes isolated from foods in Montevideo-Uruguay

Braga¹,

Vázquez²,

Vico³

et al. 2017

Brazilian Journal of Microbiology

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The aim of this work was to study the prevalence of Listeria monocytogenes in foods obtained in retail shops and food industries located in Montevideo-Uruguay, and to identify the serogroups of the obtained isolates. Three-thousand one-hundred and seventy-five food samples (frozen, deli meats, ready-to-eat and cheese) were analyzed. The obtained isolates were serogrouped by multiplex PCR and serotyped by conventional procedure. Genetic comparisons were performed using pulsed-field gel electrophoresis on a sub-set of isolates belonging to the same serotype successively recovered from the same establishment. L. monocytogenes was isolated from 11.2% of samples. The highest prevalence was observed in frozen foods (38%), followed by cheese (10%). 1/2b and 4b were the most frequently identified serotypes. In six of 236 analyzed establishments we successively recovered L. monocytogenes isolates belonging to the same serotype. Most of them corresponded to serotype 1/2b. Pulsed-field gel electrophoresis profiles suggest that at least 33% of L. monocytogenes 1/2b isolates are genetically related and that may remain viable for prolonged periods. The observed prevalence of L. monocytogenes was lower than reported in neighboring countries. Our findings highlight the role that frozen foods may play in the spread of this pathogen, and the relevance of serotypes 1/2b and 4b.

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“…range of antimicrobial agents have been published. Since the first report of a multiresistant clinical isolate in France in 1988, antimicrobial-resistant isolates collected from humans, food, plants, and the environment have been described worldwide (Charpentier et al, 1995;Srinivansan et al, 2005;Granier et al, 2011;Ruiz-Bolivar et al, 2011;Bertsch et al, 2014;Moreno et al, 2014;de Vasconcelos Byrne et al, 2016;. In humans, resistance of L. monocytogenes against tetracycline and ciprofloxacin has been described (Morvan et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Susceptibility and Multilocus Sequence Typing ofListeria monocytogenesIsolated Over 11 Years from Food, Humans, and the Environment in Italy

Caruso

Fraccalvieri

Pasquali

et al. 2020

Foodborne Pathogens and Disease

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Due to the increasing number of studies reporting the detection of antimicrobial-resistant isolates of Listeria monocytogenes, we sought to determine the antimicrobial susceptibility of L. monocytogenes isolates collected in Italy and find potential correlations to their serotypes and multilocus sequence types (MLST). The antimicrobial susceptibility of 317 L. monocytogenes isolates collected from food, humans, and the environment from 1998 to 2009 was assessed by minimum inhibitory concentration (MIC). Serotyping and MLST was also performed on all isolates. Potential correlations among antimicrobial resistance profiles, serotyping, and MLST were statistically evaluated. Twenty-four percent of L. monocytogenes isolates were resistant to oxacillin, 28.7% intermediate to clindamycin, and 24.3% to ciprofloxacin. The majority of isolates with elevated MIC to oxacillin was of environmental origin and belonged to serotype 4b/4e and ST2. Isolates with intermediate MIC values to clindamycin and ciprofloxacin were mostly of food and human origin and belonged to serotype 4b/4e and ST9. Regarding the time frame of isolate collection, comparing the last 3 years (2007-2009) to previous years (1998-2006), an increase was observed in the percentage of resistant and intermediate isolates per year. This trend strongly suggests the need for increasing attention on the prevalence of antimicrobial resistance in L. monocytogenes in Italy. To predict future resistance trends, the monitoring of clinical intermediate resistance might represent a useful tool especially for antibiotics associated to multiple-step mechanisms of acquired resistance. A specific focus should be addressed to antimicrobial-resistant isolates of serotype 4b, repeatedly associated with food-borne outbreaks.

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Occurrence and antimicrobial resistance patterns of Listeria monocytogenes isolated from vegetables

Cited by 51 publications

References 31 publications

Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi

Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi

Prevalence and serotype distribution of Listeria monocytogenes isolated from foods in Montevideo-Uruguay

Antimicrobial Susceptibility and Multilocus Sequence Typing ofListeria monocytogenesIsolated Over 11 Years from Food, Humans, and the Environment in Italy

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