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  1. Article ; Online: Production of a New Extracellular Cytotoxin from Listeria monocytogenes Serotype 4b and ATCC 15313 Serotype 1/2a in Relation to Growth Stage and Growth Temperature.

    VAN DER Kelen, Dirk / Lindsay, James A

    Journal of food protection

    2019  Volume 55, Issue 4, Page(s) 252–255

    Abstract: Both virulent (4b) and avirulent (ATCC 15313:l/2a) strains of Listeria monocytogenes synthesize a previously unrecognized extracellular cytotoxin over a broad temperature range of 4-37°C. The highest level of cytotoxin production was observed during ... ...

    Abstract Both virulent (4b) and avirulent (ATCC 15313:l/2a) strains of Listeria monocytogenes synthesize a previously unrecognized extracellular cytotoxin over a broad temperature range of 4-37°C. The highest level of cytotoxin production was observed during stationary phase; however, for all growth temperatures cytotoxin production was detected in early to mid-log phase. The cytotoxin was stable in the growth medium at both 37 and 4°C. Both strains synthesized the cytotoxin at 4 and 10°C in either whole or skim milk, at the same rate as in the semisynthetic growth medium.
    Language English
    Publishing date 2019-05-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 243284-5
    ISSN 1944-9097 ; 0362-028X
    ISSN (online) 1944-9097
    ISSN 0362-028X
    DOI 10.4315/0362-028X-55.4.252
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  2. Article ; Online: Identification of colonies of cultured shellfish-associated

    On, Stephen L W / Miller, William G / Yee, Emma / Sturgis, Jennifer / Patsekin, Valery / Lindsay, James A / Robinson, J Paul

    Current research in microbial sciences

    2021  Volume 2, Page(s) 100033

    Abstract: An increasing number ... ...

    Abstract An increasing number of
    Language English
    Publishing date 2021-04-20
    Publishing country Netherlands
    Document type Journal Article
    ISSN 2666-5174
    ISSN (online) 2666-5174
    DOI 10.1016/j.crmicr.2021.100033
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  3. Article: Identification of colonies of cultured shellfish-associated Arcobacter species by Elastic Light Scatter Analysis

    On, Stephen L.W. / Miller, William G. / Yee, Emma / Sturgis, Jennifer / Patsekin, Valery / Lindsay, James A. / Robinson, J. Paul

    Current Research in Microbial Sciences. 2021 Dec., v. 2

    2021  

    Abstract: An increasing number of Arcobacter species (including several regarded as emerging human foodborne pathogens) have been isolated from shellfish, an important food commodity. A method to distinguish these species and render viable isolates for further ... ...

    Abstract An increasing number of Arcobacter species (including several regarded as emerging human foodborne pathogens) have been isolated from shellfish, an important food commodity. A method to distinguish these species and render viable isolates for further analysis would benefit epidemiological and ecological studies. We describe a method based on Elastic Light Scatter analysis (ELSA) for the detection and discrimination of eleven shellfish-associated Arcobacter species. Although substantive differences in the growth rates of some taxa were seen, ELSA was able to differentiate all the species studied, apart from some strains of A. butzleri and A. cryaerophilus, which were nonetheless distinguished from all other species examined. ELSA appears to be a promising new approach for the detection and identification of Arcobacter species in shellfish and may also be applicable for studies in other foods and matrices.
    Keywords humans ; research ; shellfish
    Language English
    Dates of publication 2021-12
    Publishing place Elsevier BV
    Document type Article
    ISSN 2666-5174
    DOI 10.1016/j.crmicr.2021.100033
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  4. Article: Making Sure Leafy Greens and Other Produce Stay Safe

    Lindsay, James A

    Agricultural research. 2008 July, v. 56, no. 6

    2008  

    Keywords green leafy vegetables ; produce ; food safety ; foodborne illness ; Escherichia coli ; Salmonella ; food contamination ; United States
    Language English
    Dates of publication 2008-07
    Size p. 2.
    Document type Article
    ZDB-ID 437148-3
    ISSN 0002-161X
    ISSN 0002-161X
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Genetic diversity and profiles of genes associated with virulence and stress resistance among isolates from the 2010-2013 interagency Listeria monocytogenes market basket survey.

    Chen, Yi / Chen, Yuhuan / Pouillot, Régis / Dennis, Sherri / Xian, Zhihan / Luchansky, John B / Porto-Fett, Anna C S / Lindsay, James A / Hammack, Thomas S / Allard, Marc / Van Doren, Jane M / Brown, Eric W

    PloS one

    2020  Volume 15, Issue 4, Page(s) e0231393

    Abstract: Whole genome sequencing (WGS) was performed on 201 Listeria monocytogenes isolates recovered from 102 of 27,389 refrigerated ready-to-eat (RTE) food samples purchased at retail in U.S. FoodNet sites as part of the 2010-2013 interagency L. monocytogenes ... ...

    Abstract Whole genome sequencing (WGS) was performed on 201 Listeria monocytogenes isolates recovered from 102 of 27,389 refrigerated ready-to-eat (RTE) food samples purchased at retail in U.S. FoodNet sites as part of the 2010-2013 interagency L. monocytogenes Market Basket Survey (Lm MBS). Core genome multi-locus sequence typing (cgMLST) and in-silico analyses were conducted, and these data were analyzed with metadata for isolates from five food groups: produce, seafood, dairy, meat, and combination foods. Six of 201 isolates, from 3 samples, were subsequently confirmed as L. welshimeri. Three samples contained one isolate per sample; mmong the 96 samples that contained two isolates per sample, 3 samples each contained two different strains and 93 samples each contained duplicate isolates. After 93 duplicate isolates were removed, the remaining 102 isolates were delineated into 29 clonal complexes (CCs) or singletons based on their sequence type. The five most prevalent CCs were CC155, CC1, CC5, CC87, and CC321. The Shannon's diversity index for clones per food group ranged from 1.49 for dairy to 2.32 for produce isolates, which were not significantly different in pairwise comparisons. The most common molecular serogroup as determined by in-silico analysis was IIa (45.6%), followed by IIb (27.2%), IVb (20.4%), and IIc (4.9%). The proportions of isolates within lineages I, II, and III were 48.0%, 50.0% and 2.0%, respectively. Full-length inlA was present in 89.3% of isolates. Listeria pathogenicity island 3 (LIPI-3) and LIPI-4 were found in 51% and 30.6% of lineage I isolates, respectively. Stress survival islet 1 (SSI-1) was present in 34.7% of lineage I isolates, 80.4% of lineage II isolates and the 2 lineage III isolates; SSI-2 was present only in the CC121 isolate. Plasmids were found in 48% of isolates, including 24.5% of lineage I isolates and 72.5% of lineage II isolates. Among the plasmid-carrying isolates, 100% contained at least one cadmium resistance cassette and 89.8% contained bcrABC, involved in quaternary ammonium compound tolerance. Multiple clusters of isolates from different food samples were identified by cgMLST which, along with available metadata, could aid in the investigation of possible cross-contamination and persistence events.
    MeSH term(s) Bacterial Proteins/genetics ; DNA, Bacterial/chemistry ; DNA, Bacterial/metabolism ; Food Microbiology ; Genetic Variation ; Humans ; Listeria monocytogenes/classification ; Listeria monocytogenes/genetics ; Listeria monocytogenes/isolation & purification ; Listeria monocytogenes/pathogenicity ; Listeriosis/pathology ; Listeriosis/transmission ; Multilocus Sequence Typing ; Phylogeny ; Plasmids/genetics ; Plasmids/metabolism ; Serogroup ; Virulence/genetics ; Whole Genome Sequencing
    Chemical Substances Bacterial Proteins ; DNA, Bacterial ; internalin protein, Bacteria (139948-71-3)
    Language English
    Publishing date 2020-04-30
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0231393
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Casamino acid and oxyrase enhance growth of Listeria monocytogenes in multi-pathogen enrichments

    Gehring, Andrew G / Paoli, George C / Reed, Sue A / Tu, Shu-I / Lindsay, James A

    Food control. 2014, v. 40

    2014  

    Abstract: Rapid methods have been developed as relatively faster alternatives to plate culture for the detection of pathogenic bacteria in foods. However, since most rapid methods are subject to logistical limitations (e.g.,sample volume size, analysis time, ... ...

    Abstract Rapid methods have been developed as relatively faster alternatives to plate culture for the detection of pathogenic bacteria in foods. However, since most rapid methods are subject to logistical limitations (e.g.,sample volume size, analysis time, matrix effects) and/or a detection scheme with insufficient sensitivity needed to detect very low levels of bacteria in foods, culture enrichment is often employed to increase the concentration of targeted pathogens prior to detection. Multiplexed rapid detection platforms,capable of simultaneous detection of different bacteria in a single sample, necessitate co-enrichment (or mixed culture enrichment) of as many different targeted microorganisms as possible in a timely manner. This investigation compares the growth of four major foodborne pathogens (Escherichia coli O157:H7,Listeria monocytogenes, Salmonella enterica, and Yersinia enterocolitica) inoculated into pristine media or ground pork and enriched in various culture media. Initial results revealed that, after 24 h incubation, the growth of L. monocytogenes (the slowest-growing pathogen examined) was increased by approximately 1-log by the supplementation of Universal Preenrichment Broth with Casamino Acids and/or Oxyrase. Overnight (24 h) growth of L. monocytogenes in ground pork enrichment cultures was enhanced up to ca. 2-log by the addition of either Casamino Acids or Casamino Acids and Oxyrase for each of the tested growth media. Ultimately, an overnight culture of the inoculated pathogens in any of the selected media containing both Casamino Acids and Oxyrase was observed to yield target bacterial concentrations that were at sufficient levels (between 10e5 and 10e6 CFU/mL) for detection by most rapid methods.
    Keywords Escherichia coli O157 ; Listeria monocytogenes ; Salmonella enterica ; Yersinia enterocolitica ; amino acids ; bacterial contamination ; culture media ; enrichment culture ; food contamination ; food pathogens ; ground pork ; mixed culture ; rapid methods
    Language English
    Size p. 93-99.
    Document type Article
    ZDB-ID 1027805-9
    ISSN 0956-7135
    ISSN 0956-7135
    DOI 10.1016/j.foodcont.2013.11.038
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Survey for Listeria monocytogenes in and on Ready-to-Eat Foods from Retail Establishments in the United States (2010 through 2013): Assessing Potential Changes of Pathogen Prevalence and Levels in a Decade.

    Luchansky, John B / Chen, Yuhuan / Porto-Fett, Anna C S / Pouillot, Régis / Shoyer, Bradley A / Johnson-DeRycke, Rachel / Eblen, Denise R / Hoelzer, Karin / Shaw, William K / van Doren, Jane M / Catlin, Michelle / Lee, Jeehyun / Tikekar, Rohan / Gallagher, Daniel / Lindsay, James A / Dennis, Sherri

    Journal of food protection

    2017  Volume 80, Issue 6, Page(s) 903–921

    Abstract: A multiyear interagency Listeria monocytogenes Market Basket Survey was undertaken for selected refrigerated ready-to-eat foods purchased at retail in four FoodNet sites in the United States. Food samples from 16 food categories in six broad groups ( ... ...

    Abstract A multiyear interagency Listeria monocytogenes Market Basket Survey was undertaken for selected refrigerated ready-to-eat foods purchased at retail in four FoodNet sites in the United States. Food samples from 16 food categories in six broad groups (seafood, produce, dairy, meat, eggs, and combination foods) were collected weekly at large national chain supermarkets and independent grocery stores in California, Maryland, Connecticut, and Georgia for 100 weeks between December 2010 and March 2013. Of the 27,389 total samples, 116 samples tested positive by the BAX PCR system for L. monocytogenes , and the pathogen was isolated and confirmed for 102 samples. Among the 16 food categories, the proportion of positive samples (i.e., without considering clustering effects) based on recovery of a viable isolate of L. monocytogenes ranged from 0.00% (95% confidence interval: 0.00, 0.18) for the category of soft-ripened and semisoft cheese to 1.07% (0.63, 1.68) for raw cut vegetables. Among the 571 samples that tested positive for Listeria-like organisms, the proportion of positive samples ranged from 0.79% (0.45, 1.28) for soft-ripened and semisoft cheese to 4.76% (2.80, 7.51) for fresh crab meat or sushi. Across all 16 categories, L. monocytogenes contamination was significantly associated with the four states (P < 0.05) but not with the packaging location (prepackaged by the manufacturer versus made and/or packaged in the store), the type of store (national chain versus independent), or the season. Among the 102 samples positive for L. monocytogenes , levels ranged from <0.036 most probable number per g to 6.1 log CFU/g. For delicatessen (deli) meats, smoked seafood, seafood salads, soft-ripened and semisoft cheeses, and deli-type salads without meat, the percentage of positive samples was significantly lower (P < 0.001) in this survey than that reported a decade ago based on comparable surveys in the United States. Use of mixed logistic regression models to address clustering effects with regard to the stores revealed that L. monocytogenes prevalence ranged from 0.11% (0.03, 0.34) for sprouts (prepackaged) to 1.01% (0.58, 1.74) for raw cut vegetables (prepackaged).
    MeSH term(s) California ; Connecticut ; Food Contamination ; Food Microbiology ; Georgia ; Listeria monocytogenes/isolation & purification ; Maryland ; Meat Products ; Prevalence ; United States
    Language English
    Publishing date 2017-04-11
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 243284-5
    ISSN 1944-9097 ; 0362-028X
    ISSN (online) 1944-9097
    ISSN 0362-028X
    DOI 10.4315/0362-028X.JFP-16-420
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Book: 1998 progress report on food safety research conducted by ARS

    Arnold, Judy W / Robens, Jane F / Lindsay, James A

    1998  

    Title variant Progress report on food safety research conducted by ARS
    Institution United States. / Agricultural Research Service
    Author's details compiled and edited by Judy W. Arnold, Jane F. Robens, James A. Lindsay
    Keywords Food adulteration and inspection/Research ; Food contamination/Research
    Language English
    Publisher Agricultural Research Service, U.S. Dept. of Agriculture
    Publishing place Beltsville, MD
    Document type Book
    Note Title from title page. ; "October 16, 1998."
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  9. Book ; Online: Chronic health effects of microbial foodborne diseases / V. Kelly Bunning, James A. Lindsay & Douglas L. Archer ; Effets chroniques des maladies d' origine alimentaire sur la santé

    Kelly Bunning, V / Lindsay, James A / Archer, Douglas L

    1997  

    Abstract: In English with summary in ... ...

    Abstract In English with summary in French
    Keywords Food microbiology ; Bacterial infections ; Chronic disease ; Rheumatic diseases ; Inflammatory bowel diseases ; Superantigens ; Autoimmune diseases ; Autoimmunity ; Host-parasite relations ; Nutrition and Food Safety ; complications ; etiology pathology ; immunology ; pathology
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  10. Journal ; Article ; Online: Chronic health effects of microbial foodborne diseases / V. Kelly Bunning, James A. Lindsay & Douglas L. Archer ; Effets chroniques des maladies d' origine alimentaire sur la santé

    Kelly Bunning, V / Lindsay, James A / Archer, Douglas L

    1997  

    Abstract: In English with summary in ... ...

    Abstract In English with summary in French
    Keywords Food Microbiology ; Bacterial Infections ; Chronic Disease ; Rheumatic Diseases ; Inflammatory Bowel Diseases ; Superantigens ; Autoimmune Diseases ; Autoimmunity ; Host-Parasite Interactions ; Nutrition and Food Safety ; complications ; etiology pathology ; immunology ; pathology
    Document type Journal ; Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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