从土耳其零售的生牛肉、羊肉和小羊肉中分离的金黄色葡萄球菌的流行率、抗生素耐药性和肠毒素产生情况。

Prevalence, antibiotic resistance, and enterotoxin production of Staphylococcus aureus isolated from retail raw beef, sheep, and lamb meat in Turkey.

机构信息

Ankara University, Engineering Faculty, Department of Food Engineering, 50th Year Settlement, 06830 Gölbaşı, Ankara, Turkey.

出版信息

Int J Food Microbiol. 2022 Jan 16;361:109461. doi: 10.1016/j.ijfoodmicro.2021.109461. Epub 2021 Oct 29.

Abstract

The main objective of this study was to isolate and identify Staphylococcus aureus from retail raw red meat samples and evaluate their enterotoxin gene and antibiotic resistance profiles. A total of 452 retail raw meat samples, including beef (n = 200), sheep (n = 125), and lamb (n = 127) randomly purchased from various supermarkets and butchers in Ankara between July 2019 and November 2020, were tested for the prevalence of S. aureus. The S. aureus strain was identified using morphological and molecular (16S rRNA and nuc gene) methods. Moreover, nine Staphylococcal enterotoxin (SE) genes were screened using polymerase chain reaction. Antibiotic resistance of S. aureus was determined using the phenotypic disc diffusion method. The overall prevalence of S. aureus among screened samples was 21.23%. Additionally, 65.62% of S. aureus strains contained SE gene regions. The predominant SEs in the S. aureus strains were sea (50.79%), followed by sed (25.39%) and seb (23.80%). However, sec, see, seg, seh, sei, and sej genes were never detected. A substantial proportion (40-100%) of the isolates were found resistant to kanamycin, telithromycin, penicillin G, streptomycin, erythromycin, cloxacillin, ampicillin, pristinamycin, nalidixic acid, azithromycin, and ciprofloxacin. Multi-drug resistance (MDR) was observed in 96.87% of the S. aureus strains. These results show a low prevalence of S. aureus in raw red meat samples in Turkey. However, a high rate of SEA raises serious health concerns. Due to the high levels of MDR observed in this study, there is a need to strictly control antibiotic use in animals in Turkey.

摘要

本研究的主要目的是从零售的生红肉类样本中分离和鉴定金黄色葡萄球菌,并评估其肠毒素基因和抗生素耐药谱。本研究于 2019 年 7 月至 2020 年 11 月期间,随机从安卡拉的各个超市和肉铺购买了 452 份零售的生红肉类样本(牛肉 n=200,绵羊 n=125,羔羊 n=127),用于检测金黄色葡萄球菌的流行情况。使用形态学和分子(16S rRNA 和 nuc 基因)方法鉴定金黄色葡萄球菌菌株。此外,使用聚合酶链反应筛选了 9 种葡萄球菌肠毒素(SE)基因。使用纸片扩散法测定金黄色葡萄球菌的抗生素耐药性。在所筛选的样本中,金黄色葡萄球菌的总流行率为 21.23%。此外,65.62%的金黄色葡萄球菌菌株含有 SE 基因区域。在金黄色葡萄球菌菌株中,主要的 SE 是 sea(50.79%),其次是 sed(25.39%)和 seb(23.80%)。然而,从未检测到 sec、see、seg、seh、sei 和 sej 基因。相当一部分(40-100%)分离株对卡那霉素、替考拉宁、青霉素 G、链霉素、红霉素、氯唑西林、氨苄西林、普林霉素、萘啶酸、阿奇霉素和环丙沙星耐药。96.87%的金黄色葡萄球菌菌株表现出多药耐药性(MDR)。这些结果表明,土耳其生红肉类样本中金黄色葡萄球菌的流行率较低。然而,SEA 的高检出率引起了严重的健康担忧。由于本研究中观察到高水平的 MDR,因此需要在土耳其严格控制动物抗生素的使用。

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