Staphylococcus aureus produces a set of proteins (e.g., staphylococcal enterotoxin A [SEA], SEB, toxic shock syndrome toxin 1 [TSST-1]) which act both as superantigens (SAgs) and toxins. Although their mode of action as SAgs is well understood, little is known about how they enter the body via the intestine and cause food poisoning. To examine this problem we used an in vitro culture system to ...

Staphylococcus aureus causes a wide variety of diseases. Major virulence factors of this organism include enterotoxins (SEs) that cause both food poisoning and toxic shock syndrome. Recently, a novel SE, tentatively designated SEL, was identified in a pathogenicity island from a bovine mastitis isolate. The toxin had a molecular weight of 26,000 and an isoelectric point of 8.5. Recombinant SEL ...

A large-scale food poisoning outbreak happened at a school canteen in Ninh Binh Province, Vietnam, 2018, resulting the hospitalization of 352 students with clinical symptoms indicative staphylococcal poisoning. subsequent laboratory investigation detected Staphylococcus aureus two items—deep-fried shrimp and chicken floss—at up to 103 CFU/mL, enterotoxins (SEs) floss ≥0.211 ng SEs/g. S. was als...

BACKGROUND Staphylococcus aureus is unrestrictedly found in humans and in animal species that maintain thermal homeostasis. Inadequate cleaning of processing equipment or inappropriate handling can contaminate processed food and cause severe food poisoning. Staphylococcal enterotoxin B (SEB), a potent superantigenic exotoxin, is produced by 50% of clinical isolates of S. aureus and is associate...

results out of 238 samples, 5.88% were resistant to quinupristin-dalfopristin; 5.46% to linezolid; 60.92% to co-trimoxazole; 31.93% to doxycycline; 18.90% to tigecycline; 5.04% to vancomycin; 9.24% to mupirocin; 43% to oxacillin and 46.21% of our isolates were resistant to cefoxitin. conclusions coming across isolates with reduced susceptibility to quinupristin-dalfopristin and resistant to lin...

Background: Staphylococcus aureus, a Gram-positive bacterium, is the most prevalent   food-borne pathogen in most regions of the world. The current study was carried out with the aim of S. aureus isolation from shrimps sold in Tehran, Iran. Furthermore, the genes of mecA as indicator of methicillin-resistant S. aureus, sea, seb, and tsst encoding enterotoxins were studied in the S. au...

introduction: thyroid gland is well known to resist infections by rich blood supply and lymphatic drainage,   high glandular content of iodine which can be bactericidal and separation of the gland from other structures of neck. primary thyroid abscess resulting from acute suppurative thyroiditis (ast) is an unusual type of head and neck infection and it is a rare condotion in children so that p...