中国感染与化疗杂志
中國感染與化療雜誌
중국감염여화료잡지
CHINESE JOURNAL OF INFECTION AND CHEMOTHERAPY
2015年
3期
204-208
,共5页
马荣%刘科芳%聂大平%李瑞华
馬榮%劉科芳%聶大平%李瑞華
마영%류과방%섭대평%리서화
黏液表型%肺炎克雷伯菌%血清型%rm p A基因
黏液錶型%肺炎剋雷伯菌%血清型%rm p A基因
점액표형%폐염극뢰백균%혈청형%rm p A기인
hypermucoviscous phenotype%K lebsiella pneumoniae%serotype%rmpA gene
目的:了解K1、K2血清型肺炎克雷伯菌、毒性因子 rmpA 在临床感染中的分布及耐药性。方法拉丝试验确定144株肺炎克雷伯菌黏液表型,用多重聚合酶链反应(PCR)检测K1、K2和 rmpA基因。结果144株不同感染来源的肺炎克雷伯菌中,黏液型菌株占62.5%(90/144);K1、K2血清型阳性率为52.1%(75/144),rmpA阳性率为65.3%(94/144),其中K1、K2血清型与 rmpA共同阳性菌株占K1、K2血清型总数的90.7%(68/75)。K1、K2血清型、rmpA基因黏液型和非黏液型菌株分别为63.3%(57/90)、85.6%(77/90)和33.3%(18/54)、31.5%(17/54)。K1、K2血清型肺炎克雷伯菌在有无 rmpA基因肺炎克雷伯菌中分别为72.3%(68/94)和14.0%(7/50)。黏液型菌株在42例肝脓肿、16例其他部位脓肿、37例血流感染、14例社区获得性肺炎(C A P )、21例尿路感染(U T I )和14例胆道感染中分别占85.7%(36/42)、81.3%(13/16)、40.5%(15/37)、85.7%(12/14)、52.4%(11/21)和21.4%(3/14)。K1、K2血清型分别为88.1%(37/42)、56.3%(9/16)、29.7%(11/37)、64.3%、(9/14)、38.1%(8/21)和7.1%(1/14)。K1血清型在肝脓肿占61.9%(26/42);K1、K2血清型在其他部位脓肿、CAP、UTI和血流感染中比例相近;非‐K1、K2血清型则多见于胆道感染。黏液型和非黏液型菌株产超广谱β内酰胺酶(ESBL)率分别为5.6%和33.3%。前者对多数抗菌药物耐药率低于后者。结论 rmpA基因与肺炎克雷伯菌黏液表型密切相关,并多与K1、K2血清型肺炎克雷伯菌共存,K1、K2血清型肺炎克雷伯菌是肝脓肿和CAP的重要病原菌,在其他部位脓肿、U T I、血流感染也较常见,K1血清型肺炎克雷伯菌在肝脓肿多见,K1、K2血清型肺炎克雷伯菌在其他感染中比例相近。黏液型菌株产ESBL率和对多数抗菌药耐药率低于非黏液型菌株。
目的:瞭解K1、K2血清型肺炎剋雷伯菌、毒性因子 rmpA 在臨床感染中的分佈及耐藥性。方法拉絲試驗確定144株肺炎剋雷伯菌黏液錶型,用多重聚閤酶鏈反應(PCR)檢測K1、K2和 rmpA基因。結果144株不同感染來源的肺炎剋雷伯菌中,黏液型菌株佔62.5%(90/144);K1、K2血清型暘性率為52.1%(75/144),rmpA暘性率為65.3%(94/144),其中K1、K2血清型與 rmpA共同暘性菌株佔K1、K2血清型總數的90.7%(68/75)。K1、K2血清型、rmpA基因黏液型和非黏液型菌株分彆為63.3%(57/90)、85.6%(77/90)和33.3%(18/54)、31.5%(17/54)。K1、K2血清型肺炎剋雷伯菌在有無 rmpA基因肺炎剋雷伯菌中分彆為72.3%(68/94)和14.0%(7/50)。黏液型菌株在42例肝膿腫、16例其他部位膿腫、37例血流感染、14例社區穫得性肺炎(C A P )、21例尿路感染(U T I )和14例膽道感染中分彆佔85.7%(36/42)、81.3%(13/16)、40.5%(15/37)、85.7%(12/14)、52.4%(11/21)和21.4%(3/14)。K1、K2血清型分彆為88.1%(37/42)、56.3%(9/16)、29.7%(11/37)、64.3%、(9/14)、38.1%(8/21)和7.1%(1/14)。K1血清型在肝膿腫佔61.9%(26/42);K1、K2血清型在其他部位膿腫、CAP、UTI和血流感染中比例相近;非‐K1、K2血清型則多見于膽道感染。黏液型和非黏液型菌株產超廣譜β內酰胺酶(ESBL)率分彆為5.6%和33.3%。前者對多數抗菌藥物耐藥率低于後者。結論 rmpA基因與肺炎剋雷伯菌黏液錶型密切相關,併多與K1、K2血清型肺炎剋雷伯菌共存,K1、K2血清型肺炎剋雷伯菌是肝膿腫和CAP的重要病原菌,在其他部位膿腫、U T I、血流感染也較常見,K1血清型肺炎剋雷伯菌在肝膿腫多見,K1、K2血清型肺炎剋雷伯菌在其他感染中比例相近。黏液型菌株產ESBL率和對多數抗菌藥耐藥率低于非黏液型菌株。
목적:료해K1、K2혈청형폐염극뢰백균、독성인자 rmpA 재림상감염중적분포급내약성。방법랍사시험학정144주폐염극뢰백균점액표형,용다중취합매련반응(PCR)검측K1、K2화 rmpA기인。결과144주불동감염래원적폐염극뢰백균중,점액형균주점62.5%(90/144);K1、K2혈청형양성솔위52.1%(75/144),rmpA양성솔위65.3%(94/144),기중K1、K2혈청형여 rmpA공동양성균주점K1、K2혈청형총수적90.7%(68/75)。K1、K2혈청형、rmpA기인점액형화비점액형균주분별위63.3%(57/90)、85.6%(77/90)화33.3%(18/54)、31.5%(17/54)。K1、K2혈청형폐염극뢰백균재유무 rmpA기인폐염극뢰백균중분별위72.3%(68/94)화14.0%(7/50)。점액형균주재42례간농종、16례기타부위농종、37례혈류감염、14례사구획득성폐염(C A P )、21례뇨로감염(U T I )화14례담도감염중분별점85.7%(36/42)、81.3%(13/16)、40.5%(15/37)、85.7%(12/14)、52.4%(11/21)화21.4%(3/14)。K1、K2혈청형분별위88.1%(37/42)、56.3%(9/16)、29.7%(11/37)、64.3%、(9/14)、38.1%(8/21)화7.1%(1/14)。K1혈청형재간농종점61.9%(26/42);K1、K2혈청형재기타부위농종、CAP、UTI화혈류감염중비례상근;비‐K1、K2혈청형칙다견우담도감염。점액형화비점액형균주산초엄보β내선알매(ESBL)솔분별위5.6%화33.3%。전자대다수항균약물내약솔저우후자。결론 rmpA기인여폐염극뢰백균점액표형밀절상관,병다여K1、K2혈청형폐염극뢰백균공존,K1、K2혈청형폐염극뢰백균시간농종화CAP적중요병원균,재기타부위농종、U T I、혈류감염야교상견,K1혈청형폐염극뢰백균재간농종다견,K1、K2혈청형폐염극뢰백균재기타감염중비례상근。점액형균주산ESBL솔화대다수항균약내약솔저우비점액형균주。
Objective To investigate the distribution and antibiotic resistance of the K lebsiella pneumoniae strains isolated from clinical infections in terms of serotypes K1 ,K2 and virulence factor rmpA gene .Methods The hypermucoviscous phenotype of K .pneumoniae isolate was determined by string test .K1 and K2 serotypes and rmpA gene were detected using multiplex polymerase chain reaction .Results Of the 144 strains of K .pneumoniae ,the prevalence of hypermucoviscous phenotype ,K1 , K2 serotypes and rmpA gene was 62 .5% (90/144) ,52 .1% (75/144) and 65 .3% (94/144) ,respectively .The prevalence of K1 ,K2 and rmpA K .pneumoniae strains was 90 .7% (68/75) in K1 ,K2 serotypes .The prevalence of K1 ,K2 isolates and rmpA in hypermucoviscous or non‐hypermucoviscous phenoype was 63 .3% (57/90) ,85 .6% (77/90) and 33 .3% (18/54) , 31 .5% (17/54) ,respectively .The prevalence of serotype K1 ,K2 with or without rmpA gene was 72 .3% (68/94) and 14 .0% (7/50 ) respectively . Of the 42 K . pneumoniae strains isolated from liver abscess ,85 .7% (36/42) were hypermucoviscous phenotype and 88 .1% (37/42 ) were serotypes K1 , K2 . For the strains from other abscess , bacteremia ,community acquried pneumonia (CAP) ,urinary tract infection (UTI) and biliary tract infection ,the prevalence of hypermucoviscous phenotype was 81 .3% (13/16) ,40 .5%(15/37) ,85 .7% (12/14) ,52 .4% (11/21) and 21 .4% (3/14) ,respectively ,and the prevalence of serotypes K1 ,K2 was 56 .3% (9/16) ,29 .7% (11/37) ,64 .3% (9/14) ,38 .1% (8/21) and 7 .1% (1/14) ,respectively .K1 serotype isolate accounted for 61 .9% of the strains from liver abscess .The ratio between serotype K1 and K2 was similar in the isolates from other abscess ,CAP ,UTI or bacteremia .Non‐K1 ,K2 serotype isolates were common in biliary tract infection .The prevalence of extended‐spectrum beta‐lactamases (ESBLs ) was 5 .5% in hypermucoviscous phenotypes and 33 .3% in the non‐hypermucoviscous phenotypes .Conclusions rmpA gene is associated with the hypermucoviscous phenotype of K .pneumoniae strains and commonly identified in K1 ,K2 serotype isolates .Serotypes K1 ,K2 isolates are important pathogens in liver abscess and CAP ,and also common in other abscess ,UTI and bacteremia .K1 serotype isolate was most common in liver abscess .The prevalence of K1 or K2 serotype was similar in other infections . The prevalence of ESBLs is lower in hypermucoviscous strains than in non‐hypermucoviscous strains and is associated with lower resistance rate to most of the antibiotics tested .