نوع مقاله: اصیل پژوهشی
نویسندگان
1 عضو باشگاه پژوهشگران جوان،کارشناس ارشد بهداشت و کنترل کیفی مواد غذایی، دانشکده دامپزشکی، واحد شهرکرد، دانشگاه آزاد اسلامی، شهرکرد، ایران
2 گروه بهداشت مواد غذایی، دانشکده دامپزشکی، واحد شهرکرد، دانشگاه آزاد اسلامی، شهرکرد، ایران.
3 گروه بهداشت مواد غذائی و بهداشت و بیماریهای آبزیان، دانشکده دامپزشکی، واحد شهرکرد، دانشگاه آزاد اسلامی
4 مرکز تحقیقات حلال جمهوری اسلامی ایران، سازمان غذا و دارو، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Methicillin-resistant Staphylococcus aureus (S. aureus) is one of the main emerging causative agents of antibiotic-resistant food poisoning in humans. The bacterium also has the ability to the production of heat resistant enterotoxin. The present study was done to assess the prevalence rate, antibiotic resistance pattern, and frequency of enterotoxin encoding genes in methicillin-resistant S. aureus strains isolated from vegetable and salad samples. In this study, 485 samples of vegetables and salad were collected and immediately transferred to the laboratory. The microbial culture was used to isolate S. aureus, and methicillin-resistant strains were approved using cefoxitin and oxacillin disks. Antibiotic resistance patterns and frequency of enterotoxin encoding genes were analyzed using disk diffusion and PCR methods, respectively. The prevalence rate of methicillin-resistant S. aureus in vegetable and salad samples were 7.2% and 8.51%, respectively. Methicillin-resistant S. aureus strains had the highest antibiotic resistance against penicillin (100%), co-amoxiclav (100%), ampicillin (100%) and ceftriaxone (100%) antibiotics. The prevalence of resistance against imipenem (10.52%) and chloramphenicol (23.68%) was lower than other antibiotics. SEA (63.15%) and SEB (52.26%) were the most frequently detected enterotoxins in methicillin-resistant S. aureus strains. The simultaneous presence of multiple enterotoxin encoding genes and multiple resistance against several antibiotics in methicillin-resistant S. aureus strains isolated from vegetable, and salad samples represent an important health-related concern in this kind of food samples. Preventing uncontrolled administration of antibiotics can reduce the risk of enterotoxigenic methicillin-resistant S. aureus enterotoxin in vegetables and salads.
کلیدواژهها [English]