意大利食品中单核细胞增生李斯特菌的可转移四环素抗性
Transferable tetracycline resistance in Listeria monocytogenes from food in Italy.
作者信息
Pourshaban Manoocheher, Ferrini Anna Maria, Mannoni Veruscka, Oliva Brunello, Aureli Paolo
机构信息
Istituto Superiore di Sanità, Food Department, Viale Regina Elena, 299, 00161 Rome and *Department of Experimental Medicine, Microbiology Section, University of L'Aquila, L'Aquila, Italy.
出版信息
J Med Microbiol. 2002 Jul;51(7):564-597. doi: 10.1099/0022-1317-51-7-564.
Mechanisms of tetracycline resistance were investigated in two recent Listeria monocytogenes isolates from food, with L. innocua 52P tet(r) as a control. Tetracycline resistance was transferred conjugatively from all three strains to L. ivanovii and from one isolate and the control to Enterococcus faecalis. Molecular analysis demonstrated a chromosomal location for the tet determinant, which was identified as tetM in all cases. These studies are the first to show that L. monocytogenes from food could be a source of tetracycline resistance genes able to spread to other micro-organisms.
对从食品中分离出的两株近期单核细胞增生李斯特菌进行了四环素耐药机制的研究，以无害李斯特菌52P tet(r) 作为对照。四环素耐药性通过接合作用从所有三株菌株转移至伊氏李斯特菌，并且从一株分离菌和对照菌株转移至粪肠球菌。分子分析表明四环素决定簇位于染色体上，在所有情况下均鉴定为tetM。这些研究首次表明，食品中的单核细胞增生李斯特菌可能是能够传播至其他微生物的四环素耐药基因的来源。
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