摘要
目的 研究重症监护病房多重耐药铜绿假单胞菌(MDRP)的耐药谱和同源性.方法 收集小榄医院2010年1月-2012年2月重症监护病房分离的27株MDRP进行药敏试验,并应用肠杆菌基因间重复一致序列为引物的聚合酶链反应(ERIC-PCR)方法检测菌株之间的同源性.结果 27株MDRP对12种抗菌药物中的10种(妥布霉素、庆大霉素、阿米卡星、哌拉西林、氨曲南、环丙沙星、左旋氧氟沙星、亚胺培南、美罗培南和头孢吡肟)均完全耐药,对其他两种抗菌药物(头孢他啶和哌拉西林/他唑巴坦)部分敏感、中介或耐药,对12种抗菌药物表现出4种耐药模式,其中Ⅰ型耐药模式9株(对头孢他啶中介),Ⅱ型6株(对头孢他啶和哌拉西林/他唑巴坦中介),Ⅲ型11株(对头孢他啶敏感,对哌拉西林/他唑巴坦中介),Ⅳ型1株(对哌拉西林/他唑巴坦中介).ERIC-PCR检测按照相似度≥80%者为同一亚型,<80%者为不同基因型的判断标准,27株MDRP呈现出11种基因型.结论 加强耐药监测和医院感染控制,合理使用抗菌药物,应用分子生物学方法进行细菌流行病学调查,可有效预防MDRP蔓延.
Objective To study the homology and resistant pattern of multiple drug-resistant Pseudomonas aeruginosa (MDRP) in ICU from Jan 2010 to Feb 2012.Methods The drug susceptibility test were analyzed for the total isolated 27 strains from ICU.The Enterobacterial repetitive intergenic consensus sequence-based PCR (ERIC-PCR)were used to test the homology among different strains.Results The drug susceptibility test showed that the 27 strains were completely resistant to Tobramycin,Gentamicin,Amikacin,Piperacillin,Aztreonam,Ciprofloxacin,Levofloxacin,Imipenem,Meropenem and Cefepime.The strains were partly sensitive,intermediary or resistant to Ceftazidime and Piperacillin/Tazobactam.There were 4 drug-resistant profiles according to the susceptibility results of the 12 antimicrobial agents.Profile Ⅰ (intermediary to Ceftazidime) 9 strains,Profile Ⅱ (intermediary to Ceftazidime and Piperacillin/Tazobactam) 6 strains,Profile Ⅲ (sensitive to Ceftazidime and intermediary to Piperacillin/Tazobactam) 11 strains,Profile Ⅳ (intermediary to Piperacillin/ Tazobactam) 1 strains.A 80% cut-off was used to analyze the genotypes.There were 11 PCR patterns showed by ERICPCR genotyping.Conclusion Drug resistance monitoring and hospital infection control with bacterial epidemiology are effective methods to reduce the spread of MDRP.
出处
《现代检验医学杂志》
CAS
2014年第3期84-87,共4页
Journal of Modern Laboratory Medicine
基金
广东省医学科学技术研究基金项目(A2011751)
广东省科技厅“广东农村安全合理用药研究基金项目(2009B040800002-2)
中山市卫生局立项课题(2010125).