中国实验诊断学
中國實驗診斷學
중국실험진단학
CHINESE JOURNAL OF LABORATORY DIAGNOSIS
2014年
11期
1793-1796
,共4页
肺炎链球菌%血清型%耐药性%儿童
肺炎鏈毬菌%血清型%耐藥性%兒童
폐염련구균%혈청형%내약성%인동
streptococcus pneumoniae%serotype%antimicrobial resistance%children
目的:研究大连地区住院儿童感染肺炎链球菌(SP)的耐药性及其血清分型。方法 SP菌株均从5岁以下儿童患者鼻咽抽吸物中分离。血清分型通过多重PCR方法鉴定,药敏试验通过 E-test方法来判断,而耐药基因 ermB及mefA/E则由PCR方法来检测。结果从2010年7月到2013年6月,共分离得到131例SP。药敏结果显示所有的131例菌株对红霉素以及克林霉素全部耐药,大约有39.8%的菌株对青霉素 G不敏感,而所有的菌株则均对左氧氟沙星和万古霉素敏感。此外,有129例(98.5%)属于多种耐药菌株。血清分型结果显示本地区 SP血清型以19F (28.2%)、19A (19.1%)、6B(17.6%)及23F(14.5%)为主。且在这些血清型中的 SP中,青霉素不敏感肺炎链球菌(PNSP)对阿莫西林、头孢曲松及头孢噻肟的不敏感性要显著高于青霉素敏感肺炎链球菌(PSSP)(P<0.05)。7价疫苗(PCV7)和13价疫苗(PCV13)覆盖的血清型分别占68.7%和87.8%。此外,49株(37.4%)单独携带 ermB基因,而82株(62.6%)同时携带 ermB和mefA/E两种耐药基因。结论大多数分离的 SP对青霉素 G仍然相对敏感,所有菌株对左氧氟沙星和万古霉素敏感。本地区 SP血清型以19F、19A、6B及23F为主。鉴于19A血清型的高流行率,引入PCV13更能有效地预防儿童肺炎链球菌的感染和控制耐药菌株传播。
目的:研究大連地區住院兒童感染肺炎鏈毬菌(SP)的耐藥性及其血清分型。方法 SP菌株均從5歲以下兒童患者鼻嚥抽吸物中分離。血清分型通過多重PCR方法鑒定,藥敏試驗通過 E-test方法來判斷,而耐藥基因 ermB及mefA/E則由PCR方法來檢測。結果從2010年7月到2013年6月,共分離得到131例SP。藥敏結果顯示所有的131例菌株對紅黴素以及剋林黴素全部耐藥,大約有39.8%的菌株對青黴素 G不敏感,而所有的菌株則均對左氧氟沙星和萬古黴素敏感。此外,有129例(98.5%)屬于多種耐藥菌株。血清分型結果顯示本地區 SP血清型以19F (28.2%)、19A (19.1%)、6B(17.6%)及23F(14.5%)為主。且在這些血清型中的 SP中,青黴素不敏感肺炎鏈毬菌(PNSP)對阿莫西林、頭孢麯鬆及頭孢噻肟的不敏感性要顯著高于青黴素敏感肺炎鏈毬菌(PSSP)(P<0.05)。7價疫苗(PCV7)和13價疫苗(PCV13)覆蓋的血清型分彆佔68.7%和87.8%。此外,49株(37.4%)單獨攜帶 ermB基因,而82株(62.6%)同時攜帶 ermB和mefA/E兩種耐藥基因。結論大多數分離的 SP對青黴素 G仍然相對敏感,所有菌株對左氧氟沙星和萬古黴素敏感。本地區 SP血清型以19F、19A、6B及23F為主。鑒于19A血清型的高流行率,引入PCV13更能有效地預防兒童肺炎鏈毬菌的感染和控製耐藥菌株傳播。
목적:연구대련지구주원인동감염폐염련구균(SP)적내약성급기혈청분형。방법 SP균주균종5세이하인동환자비인추흡물중분리。혈청분형통과다중PCR방법감정,약민시험통과 E-test방법래판단,이내약기인 ermB급mefA/E칙유PCR방법래검측。결과종2010년7월도2013년6월,공분리득도131례SP。약민결과현시소유적131례균주대홍매소이급극림매소전부내약,대약유39.8%적균주대청매소 G불민감,이소유적균주칙균대좌양불사성화만고매소민감。차외,유129례(98.5%)속우다충내약균주。혈청분형결과현시본지구 SP혈청형이19F (28.2%)、19A (19.1%)、6B(17.6%)급23F(14.5%)위주。차재저사혈청형중적 SP중,청매소불민감폐염련구균(PNSP)대아막서림、두포곡송급두포새우적불민감성요현저고우청매소민감폐염련구균(PSSP)(P<0.05)。7개역묘(PCV7)화13개역묘(PCV13)복개적혈청형분별점68.7%화87.8%。차외,49주(37.4%)단독휴대 ermB기인,이82주(62.6%)동시휴대 ermB화mefA/E량충내약기인。결론대다수분리적 SP대청매소 G잉연상대민감,소유균주대좌양불사성화만고매소민감。본지구 SP혈청형이19F、19A、6B급23F위주。감우19A혈청형적고류행솔,인입PCV13경능유효지예방인동폐염련구균적감염화공제내약균주전파。
Objective To explore the antimicrobial susceptibility and serotypes distribution of pneumococci in hospi-talized children in Dalian.Methods The pneumococci were isolated from the nasopharyngeal aspirates of children less than 5 years of age.The capsular serotypes were identified by multiplex polymerase chain reaction (PCR).Antimicrobi-al susceptibility was tested by E-test.The presence of ermB,mefA/E genes were detected by PCR.Results From July 2010 to June 2013,a total of 131 pneumococcal isolates were collected.All 131 strains were resistant to erythromycin and clindamycin,about 39.8% strains were non-susceptible to penicillin G,all strains were sensitive to levofloxacin and vancomycin.129 (98.5%)isolates were resistant to ≥3 types of antibiotics.Serotypes 19F (28.2%),19A (19.1%), 6B (17.6%)and 23F (14.5%)were the most common serotypes in all identified strains.As for 19F,19A,6B and 23F groups,penicillin non-susceptible S.pneumoniae(PNSP)strains were more resistant to amoxicillin,ceftriaxone and ce-fotaxime than penicillin non-susceptible S.pneumoniae(PSSP)strains (P<0.05).The serotypes coverage of PCV7 and PCV13 were 68.7% and 87.8%,respectively.49 (37.4%)strains carried the ermB gene,and 82 (62.6%)carried both ermB and mefA/E genes.Conclusion Most of SP strains were relatively sensitive to penicillin G,and all strains were sensitive to levofloxacin and vancomycin.Serotypes 19F,19A,6B and 23F were the most common serotypes of S.pneu-moniae stains in Dalian.Considering the high prevalence of serotype 19A,the introduction of PCV13 may be a promising preventive strategy to control the increasing trend of clonal spread in Dalian.