替加环素对碳青霉烯类耐药鲍曼醋酸钙复合不动杆菌的体外抗菌活性

In vitro antibacterial activity of tigecycline against carbapenems-resistant Acinetobacter calcoacetcus-Acinetobacter baumannii complex

目的测定替加环素对碳青霉烯类耐药鲍曼醋酸钙复合不动杆菌的体外抗菌活性。方法收集2013年12月至2014年2月本院分离的碳青霉烯类耐药鲍曼醋酸钙复合不动杆菌,采用MTS法检测替加环素MIC值,折点采用美国食品药物管理局(FDA)公布的判定标准。结果 61株碳青霉烯类耐药鲍曼醋酸钙复合不动杆菌对临床常用抗菌药物具有极高的耐药率,替加环素的灵敏度为80.3%,中介率为19.7%,无耐药菌株。MIC90为3μg/mL,而MIC50为2μg/mL。结论替加环素对于本院分离的碳青霉烯类耐药鲍曼醋酸钙复合不动杆菌有较好的体外抗菌活性。

Objective To measure the in vitro antibacterial activity of tigecycline against carbapenems-resistant Acinetobacter calcoacetcus-Acinetobacter baumannii complex.Methods The isolated strains of carbapenems-resistant Acinetobacter calcoacetcus-Acinetobacter baumannii complex were collected in our hospital from December 2013 to February 2014.The MIC test strip was a-dopted to measure the MIC value of tigecycline.The break point adopted the judgment criteria published by FDA.Results All 61 strains of carbapenems-resistant Acinetobacter calcoacetcus-Acinetobacter baumannii complex had extremely high drug resistant rate to the commonly used antimicrobial agents.The sensitive rate of tigecycline was 80.3%,intermediation was 19.7% and no re-sistant strain was found in this study.MIC50 and MIC90 were 2 μg/mL and 3 μg/mL respectively.Conclusion Tigecycline has bet-ter in vitro antibacterial activity to the carbapenems-resistant Acinetobacter calcoacetcus-Acinetobacter baumannii complex isolated in our hospital.