Background: In this study we aimed at detecting the enterotoxin A and B gene of S. aureus in clinical samples of patients attending health centers in Zahedan using molecular methods. Materials and Methods: A cross-sectional study was carried out in which 40 samples of S. aureus were obtained from patients in a hospital in Zahedan, Iran. Following the biochemical tests, Identifications were c...

Background: Several virulence factors have been described in pathogenesis of Staphylococcus aureus strains. Staphylococcal Enterotoxins(SEs) that is one of the most factors, are belonging to important members of bacterial superantigens. Superantigens are defined by their ability to stimulate cytokine release from both T cells and macrophages. 13 different SEs are known that their function is no...

OBJECTIVES To investigate the prevalence and toxin production characteristics of non-emetic and emetic Bacillus cereus strains isolated via the laboratory surveillance system in Korea. METHODS A total of 667 B. cereus strains were collected by the Korea National Research Institute of Health laboratory surveillance system from 2012 to 2014. The collected strains were analyzed by geographical r...

conclusions our results show the presence of clonal groups of enterotoxin-producing mrsa strains in this hospital in tehran. the presence of bacteriophage encoded virulence factors and resistance to oxacillin enable bacteria to produce a broad spectrum range of diseases. results out of the 279 s. aureus isolates, 91 (32.6%) strains were confirmed as mrsa. totally, 6 enterotoxin and 2 virulence ...

Background: Staphylococcus aureus is one of the major causes of food poisoning. Since milk is a nutritious source of proteins and vitamins, it could provide the optimal conditions for the growth of several bacterial pathogens, such as S. aureus. The present study aimed to assess the frequency of Staphylococcus aureus classical enterotoxin genes in raw milk samples in Zanjan, Iran. Methods: In ...

OBJECTIVE To evaluate enterotoxin production, enterotoxin gene distribution, and genetic diversity of Staphylococcus aureus in milk obtained from cows with subclinical mastitis. SAMPLE Milk samples obtained from 350 cows (1,354 mammary glands) on 11 Wisconsin dairy farms. PROCEDURES Of 252 S aureus isolates obtained from 146 cows, 83 isolates (from 66 cows with subclinical mastitis) were co...

OBJECTIVES To investigate the potential use of DNA techniques in epidemiological diagnosis of Bacillus cereus food poisoning. SUBJECTS Fifty six B. cereus isolates from milk were studied. DESIGN The 56 B. cereus isolates were characterised into enterotoxin positive (27 isolates) and enterotoxin negative (29 isolates) using reverse passive latex agglutination technique. SETTING Plasmid and...

Staphylococcus aureus is an important opportunist that can cause superficial to life-threatening illnesses in humans and a variety of animal species. Staphylococcal enterotoxin has an important role in food poisoning in human. Staphylococcal enterotoxin A is the most commonly reported enterotoxin in staphylococcal food poisoning. This study revealed the presence of enterotoxin (like) genes (sea...

background: in this study we aimed at detecting the enterotoxin a and b gene of s. aureus in clinical samples of patients attending health centers in zahedan using molecular methods. materials and methods: a cross-sectional study was carried out in which 40 samples of s. aureus were obtained from patients in a hospital in zahedan, iran. following the biochemical tests, identifications were conf...

conclusions overall, except for pcvd432 and aggr, we detected high heterogeneity of virulence factors among eaec isolates causing diarrhea in children. one set of genes, in the combination, pic- sepa- agg4a, was associated with strong biofilm. results among the 322 e. coli isolated, 23 were identified as eaec. all eaec carried a 630-bp fragment of the plasmid (paa) encoded pcvd432 and aggr gene...