摘要
In order to provide useful information for effective control and clinical therapy of infection,the resistance status and the rate of carrying AmpC β-lactamase of Enterobacter cloacae(E.cloacae)were investigated.By VITEK(Bacterial automatic biochemical analyzer),the isolates of E.cloacae were identified and the drug resistance was measured.The AmpC enzyme was detected by thefive-disk diffusion test.Antibiotic sensitivity test showed that the resistance effects of E.cloacae to cefazolin,cefoxitin and ampicillin were more serious,with resistant rates of 80.5%,75.3%and 70.1%,respectively.However,it was more sensitive to Sulperazone(cefoperazone/sulbactam,13.0%),amikacin(16.9%)and ciprofloxacin(19.5%).Meanwhile,the phenotype detection showed that 35.06%(27/77)isolates of E.cloacae produced AmpCβ-lactamase.Most of E.cloacae are multi-drug resistant strains.Sulperazone(cefoperazone/sulbactam),a kind of componentβ-lactamase,is a more effective antibiotic for treating infection caused by E.cloacae.Unreasonable application of the third generation cephalosporins plays an important role in leading to emergence of high-yield AmpCβ-lactamase strains,so antibiotics should be used wisely.
基金
supported by the Key Subject of Tianjin Medical University(No.2004xk47).
