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首页> 外文期刊>Journal of Stored Products Research >Diversity and antibiotic resistance of enterococci associated with stored-product insects collected from feed mills.
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Diversity and antibiotic resistance of enterococci associated with stored-product insects collected from feed mills.

机译：从饲料厂收集的与产昆虫相关的肠球菌的多样性和抗药性。

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Diversity and antibiotic resistance of enterococci associated with stored-product insects were assessed by screening 298 live adults from nine insect species collected from six feed mills in the midwestern United States. The eight antibiotics tested were tetracycline, ampicillin, erythromycin, vancomycin, chloramphenicol, ciprofloxacin, streptomycin, and neomycin. Enterococci were isolated from seven out of nine insect species collected. A majority of enterococci and aerococci were isolated from the red flour beetle, Tribolium castaneum (Herbst). Approximately 18% of the insects tested positive for bacteria on mEnterococcus agar, and the mean colony forming units ranged from 2x101 to 1.3x105 per insect. Bacteria isolated on mEnterococcus agar included Enterococcus faecium, Enterococcus gallinarum, and Aerococcus viridans 3. Isolates of E. faecium displayed complete or intermediate resistance, most frequently to neomycin, tetracycline, and erythromycin. In addition, many E. faecium isolates exhibited intermediate resistance to vancomycin. The majority of A. viridans 3 isolates were susceptible to all antibiotics, while isolates of E. gallinarum displayed resistance to neomycin. Enterococci and aerococci are nosocomial human pathogens and are implicated in secondary infections, mainly in immuno-compromised individuals. Additionally, enterococci are considered an important reservoir of antibiotic resistance genes that can be horizontally transferred to other bacteria, including serious human pathogens. Our data reinforce the need for pest management to reduce the availability of vectors (insects) for dissemination of microorganisms carrying antibiotic resistance genes in the feed mill environment. All rights reserved, Elsevier.
机译：通过从美国中西部六个饲料厂收集的九种昆虫中筛选出298个活体成虫，评估了与储藏物昆虫相关的肠球菌的多样性和抗药性。测试的八种抗生素为四环素，氨苄青霉素，红霉素，万古霉素，氯霉素，环丙沙星，链霉素和新霉素。从收集的9种昆虫中的7种分离出肠球菌。从红色面粉甲虫Tribolium castaneum（Herbst）中分离出大部分肠球菌和航空球菌。大约18％的昆虫在肠球菌琼脂上的细菌测试呈阳性，每只昆虫的平均菌落形成单位范围从2x101到1.3x105。分离于肠球菌琼脂上的细菌包括粪肠球菌，鸡肠球菌和绿色气单球菌3。粪肠球菌的分离株显示出完全或中等耐药性，最常见的是对新霉素，四环素和红霉素的耐药性。另外，许多粪肠球菌分离株对万古霉素表现出中等抗性。绿假单胞菌3株的大多数分离株均对所有抗生素敏感，而鸡肠球菌的分离株显示出对新霉素的抗性。肠球菌和航空球菌是医院内的人类病原体，与继发感染有关，主要是免疫功能低下的个体。另外，肠球菌被认为是重要的抗生素抗性基因库，可以水平转移到其他细菌，包括严重的人类病原体。我们的数据加强了对害虫管理的需求，以减少在饲料厂环境中传播带有抗生素抗性基因的微生物的载体（昆虫）的可用性。保留所有权利，Elsevier。

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