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Distribution of newly described enterotoxin-like genes in Staphylococcus aureus from food.
Int J Food Microbiol. 2006 Apr 15; 108(1):36-41.IJ

Abstract

Extensive analysis of the Staphylococcus aureus genome has allowed the identification of new genes encoding enterotoxin-like superantigens (SEls). Some of these are thought to be involved in staphylococcal food poisoning, while others do not elicit any emetic effect. The potential impact of these members of the enterotoxin-like family on the human organism seems to rely mainly on their superantigenic activity. In this paper the distribution of the genes coding for enterotoxin-like superantigens in S. aureus isolated from food was studied. Fifty isolates of S. aureus were examined and 27 were shown to be enterotoxigenic. Only 9 of the 27 strains carried genes encoding enterotoxins SEA-SEE. In 18 SEA-SEE-negative strains the presence of newly described enterotoxin genes was detected. All SEA-SEE-positive strains simultaneously carried genes of new SEls. We show that the gene encoding SElH (staphylococcal enterotoxin-like enterotoxin H) was the most frequently detected (n=14), while genes encoding SElI together with SElG accompanied by the other genes of the egc locus were detected in three strains. We also detected the presence of three less investigated genes: sep, sel, and sek. These genes were present in eight, two, and one isolate, respectively. In one strain, sep was accompanied by genes of other SEls, while in the remaining seven it was the only enterotoxin-like gene detected. The high prevalence of newly discovered enterotoxin genes, including the genes encoding emetic toxins, was demonstrated in food-derived strains. This supports the need for additional work on its role in food poisoning and, alternatively, to monitor its presence in S. aureus isolated from food. Our results suggest that yet unknown genetic elements encoding enterotoxin genes may exist.

Authors+Show Affiliations

Department of Food Hygiene and Consumer Protection, Faculty of Veterinary Medicine, Agricultural University of Wroclaw, Norwida 31, 50-375 Wroclaw, Poland. bania@ozi.ar.wroc.plNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16380185

Citation

Bania, Jacek, et al. "Distribution of Newly Described Enterotoxin-like Genes in Staphylococcus Aureus From Food." International Journal of Food Microbiology, vol. 108, no. 1, 2006, pp. 36-41.
Bania J, Dabrowska A, Bystron J, et al. Distribution of newly described enterotoxin-like genes in Staphylococcus aureus from food. Int J Food Microbiol. 2006;108(1):36-41.
Bania, J., Dabrowska, A., Bystron, J., Korzekwa, K., Chrzanowska, J., & Molenda, J. (2006). Distribution of newly described enterotoxin-like genes in Staphylococcus aureus from food. International Journal of Food Microbiology, 108(1), 36-41.
Bania J, et al. Distribution of Newly Described Enterotoxin-like Genes in Staphylococcus Aureus From Food. Int J Food Microbiol. 2006 Apr 15;108(1):36-41. PubMed PMID: 16380185.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Distribution of newly described enterotoxin-like genes in Staphylococcus aureus from food. AU - Bania,Jacek, AU - Dabrowska,Anna, AU - Bystron,Jarosław, AU - Korzekwa,Kamila, AU - Chrzanowska,Jozefa, AU - Molenda,Jerzy, Y1 - 2005/12/27/ PY - 2005/04/28/received PY - 2005/08/03/revised PY - 2005/10/12/accepted PY - 2005/12/29/pubmed PY - 2006/5/23/medline PY - 2005/12/29/entrez SP - 36 EP - 41 JF - International journal of food microbiology JO - Int J Food Microbiol VL - 108 IS - 1 N2 - Extensive analysis of the Staphylococcus aureus genome has allowed the identification of new genes encoding enterotoxin-like superantigens (SEls). Some of these are thought to be involved in staphylococcal food poisoning, while others do not elicit any emetic effect. The potential impact of these members of the enterotoxin-like family on the human organism seems to rely mainly on their superantigenic activity. In this paper the distribution of the genes coding for enterotoxin-like superantigens in S. aureus isolated from food was studied. Fifty isolates of S. aureus were examined and 27 were shown to be enterotoxigenic. Only 9 of the 27 strains carried genes encoding enterotoxins SEA-SEE. In 18 SEA-SEE-negative strains the presence of newly described enterotoxin genes was detected. All SEA-SEE-positive strains simultaneously carried genes of new SEls. We show that the gene encoding SElH (staphylococcal enterotoxin-like enterotoxin H) was the most frequently detected (n=14), while genes encoding SElI together with SElG accompanied by the other genes of the egc locus were detected in three strains. We also detected the presence of three less investigated genes: sep, sel, and sek. These genes were present in eight, two, and one isolate, respectively. In one strain, sep was accompanied by genes of other SEls, while in the remaining seven it was the only enterotoxin-like gene detected. The high prevalence of newly discovered enterotoxin genes, including the genes encoding emetic toxins, was demonstrated in food-derived strains. This supports the need for additional work on its role in food poisoning and, alternatively, to monitor its presence in S. aureus isolated from food. Our results suggest that yet unknown genetic elements encoding enterotoxin genes may exist. SN - 0168-1605 UR - https://www.unboundmedicine.com/medline/citation/16380185/Distribution_of_newly_described_enterotoxin_like_genes_in_Staphylococcus_aureus_from_food_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0168-1605(05)00574-X DB - PRIME DP - Unbound Medicine ER -