中国感染控制杂志
中國感染控製雜誌
중국감염공제잡지
Chinese Journal of Infection Control
2015年
9期
597-600
,共4页
曾邦伟%陈建森%潘玉红%吴湘燕
曾邦偉%陳建森%潘玉紅%吳湘燕
증방위%진건삼%반옥홍%오상연
铜绿假单胞菌%生物被膜%Ⅰ类整合酶%阿奇霉素%抗药性,微生物%抗菌药物
銅綠假單胞菌%生物被膜%Ⅰ類整閤酶%阿奇黴素%抗藥性,微生物%抗菌藥物
동록가단포균%생물피막%Ⅰ류정합매%아기매소%항약성,미생물%항균약물
Pseudomonas aeruginosa%biofilm%class Ⅰ integron-integrase gene%azithromycin%drug resistance,microbial%antimicrobial agent
目的:探讨阿奇霉素对生物被膜(BF)阳性铜绿假单胞菌(PA)Ⅰ类整合酶基因(intI 1)mRNA 表达量的影响。方法对某院临床分离的10株 PA 进行 intI 1基因检测,选择其中1株 BF+intI 1基因阳性的 PA 进行培养,并设空白对照组和阿奇霉素处理组(按阿奇霉素浓度不同分为3个浓度组,分别为16、32、64 mg/L 组),重复试验5次,采用荧光定量聚合酶链式反应(RT-PCR)检测其 intI 1 mRNA 的表达情况。结果16 mg/L阿奇霉素组、32 mg/L阿奇霉素组、64 mg/L 阿奇霉素组和对照组 intI 1 mRNA 相对表达量分别为(1.15±0.04)、(12.47±3.10)、(19.71±0.78)和(1.00±0.00),各组间比较,差异有统计学意义(F =163.82,P <0.001);组间两两比较,除低浓度阿奇霉素组(16 mg/L)与对照组比较,差异无统计学意义(P >0.05)外,其他各组间比较,差异均有统计学意义(P <0.05),阿奇霉素组 intI 1 mRNA 表达量随培养液中阿奇霉素浓度升高而升高。结论在阿奇霉素压力下 BF 阳性的 PA,intI 1表达有所上调,可提高耐药基因的捕获概率,促进耐药基因重组。
目的:探討阿奇黴素對生物被膜(BF)暘性銅綠假單胞菌(PA)Ⅰ類整閤酶基因(intI 1)mRNA 錶達量的影響。方法對某院臨床分離的10株 PA 進行 intI 1基因檢測,選擇其中1株 BF+intI 1基因暘性的 PA 進行培養,併設空白對照組和阿奇黴素處理組(按阿奇黴素濃度不同分為3箇濃度組,分彆為16、32、64 mg/L 組),重複試驗5次,採用熒光定量聚閤酶鏈式反應(RT-PCR)檢測其 intI 1 mRNA 的錶達情況。結果16 mg/L阿奇黴素組、32 mg/L阿奇黴素組、64 mg/L 阿奇黴素組和對照組 intI 1 mRNA 相對錶達量分彆為(1.15±0.04)、(12.47±3.10)、(19.71±0.78)和(1.00±0.00),各組間比較,差異有統計學意義(F =163.82,P <0.001);組間兩兩比較,除低濃度阿奇黴素組(16 mg/L)與對照組比較,差異無統計學意義(P >0.05)外,其他各組間比較,差異均有統計學意義(P <0.05),阿奇黴素組 intI 1 mRNA 錶達量隨培養液中阿奇黴素濃度升高而升高。結論在阿奇黴素壓力下 BF 暘性的 PA,intI 1錶達有所上調,可提高耐藥基因的捕穫概率,促進耐藥基因重組。
목적:탐토아기매소대생물피막(BF)양성동록가단포균(PA)Ⅰ류정합매기인(intI 1)mRNA 표체량적영향。방법대모원림상분리적10주 PA 진행 intI 1기인검측,선택기중1주 BF+intI 1기인양성적 PA 진행배양,병설공백대조조화아기매소처리조(안아기매소농도불동분위3개농도조,분별위16、32、64 mg/L 조),중복시험5차,채용형광정량취합매련식반응(RT-PCR)검측기 intI 1 mRNA 적표체정황。결과16 mg/L아기매소조、32 mg/L아기매소조、64 mg/L 아기매소조화대조조 intI 1 mRNA 상대표체량분별위(1.15±0.04)、(12.47±3.10)、(19.71±0.78)화(1.00±0.00),각조간비교,차이유통계학의의(F =163.82,P <0.001);조간량량비교,제저농도아기매소조(16 mg/L)여대조조비교,차이무통계학의의(P >0.05)외,기타각조간비교,차이균유통계학의의(P <0.05),아기매소조 intI 1 mRNA 표체량수배양액중아기매소농도승고이승고。결론재아기매소압력하 BF 양성적 PA,intI 1표체유소상조,가제고내약기인적포획개솔,촉진내약기인중조。
Objective To evaluate the effect of azithromycin on class Ⅰ integron-integrase gene (intI 1 )mRNA expression in biofilm-forming (BF)Pseudomonas aeruginosa (PA).Methods intI 1 of 10 PA strains isolated from a hospital were detected,1 strain with positive BF+intI 1 was selected for culture,blank control group and three az-ithromycin trial groups (divided according to 3 concentrations:16 mg/L,32 mg/L,and 64 mg/L)were set,experi-ments were repeated 5 times,expression of intI 1 mRNA were detected by RT-PCR.Results Relative expression of intI 1 mRNA in azithromycin groups of 16 mg/L,32 mg/L,64 mg/L,and control group were (1 .15 ±0.04), (12.47±3.10),(19.71 ±0.78 ),and (1 .00 ±0.00),respectively,there were significant difference among four groups(F =163.82,P <0.001 );intI 1 mRNA expression between 16mg/L azithromycin group and control group was not significantly different (P >0.05),but among other groups were significantly different (P <0.05 ),intI 1 mRNA expression in azithromycin groups increased with the enhancing concentration of azithromycin in culture so-lution .Conclusion Expression of intI 1 gene mRNA in BF PA can be up-regulated by the present of azithromycin, which may improve the probability of drug-resistant genes,and promote drug-resistant gene recombination.