Grewal J S, Tiwari R P
Department of Microbiology, Panjab University, Chandigarh, India.
J Med Microbiol. 1990 Aug;32(4):223-6. doi: 10.1099/00222615-32-4-223.
Of 39 strains of Escherichia coli isolated from foodstuffs, all were resistant to at least one of a panel of four metallic ions tested. The most common resistance (94.9%) was against cadmium, followed by arsenate (76.9%), silver (71.8%) and mercury (61.5%). Multiple resistance to three (35.9%) or four (38.5%) metals was seen more often than resistance to two (18%) or one (7.7%) metal only. The opposite trend was seen in antibiotic resistance; resistance to one (30%) or two (49%) antibiotics was more common than to three or more antibiotics (13%). Resistance to kanamycin correlated with resistance to silver and cadmium ions and resistance to ampicillin or cephalothin was, with one exception, associated with resistance to cadmium ions.
从食品中分离出的39株大肠杆菌，对所检测的四种金属离子中的至少一种均有抗性。最常见的抗性（94.9%）是针对镉，其次是砷酸盐（76.9%）、银（71.8%）和汞（61.5%）。对三种（35.9%）或四种（38.5%）金属的多重抗性比仅对两种（18%）或一种（7.7%）金属的抗性更为常见。在抗生素抗性方面则呈现相反趋势；对一种（30%）或两种（49%）抗生素的抗性比三种或更多抗生素的抗性（13%）更为常见。对卡那霉素的抗性与对银和镉离子的抗性相关，对氨苄青霉素或头孢菌素的抗性，除一个例外，与对镉离子的抗性相关。
