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中国临床药理学与治疗学 ›› 2017, Vol. 22 ›› Issue (12): 1400-1405.

• 药物治疗学 • 上一篇    下一篇

氨曲南联用阿奇霉素对产膜铜绿假单胞菌作用的实验研究

李 娜1,刘桢宇1,胡 文2,陈春林1   

  1. 1 宜春学院化学与生物工程学院,宜春 336000,江西;2 宜春市人民医院药剂科,宜春 336000,江西
  • 收稿日期:2017-05-09 修回日期:2017-06-12 出版日期:2017-12-26 发布日期:2018-01-02
  • 通讯作者: 陈春林,男,博士,讲师,研究方向:临床药学。 Tel:0795-3201098 E-mail:chenchunlinycxy@163.com
  • 作者简介:李娜,女,硕士研究生,研究方向:临床药学。 Tel:15270151948 E-mail:linanayiyi@163.com
  • 基金资助:

    国家自然科学基金-地区科学基金项目(81560584)

Effects of Aztreonam combined Azithromycin on Pseudomonas aeruginosa bioflim

LI Na1, LIU Zhenyu1, HU Wen2, CHEN Chunlin1   

  1. 1 College of Chemical and Biological Engineering, Yichun College, Yichun 336000, Jiangxi, China; 2 Department of Pharmacy, Yichun Municipal People' s Hospital, Yichun 336000, Jiangxi, China
  • Received:2017-05-09 Revised:2017-06-12 Online:2017-12-26 Published:2018-01-02

摘要:

目的:探讨氨曲南联用阿奇霉素对铜绿假单胞菌ATCC 27853及临床分离的15株铜绿假单胞菌的体外作用效果。方法: 分别采用肉汤稀释法、棋盘法测定氨曲南、阿奇霉素单用及两者联用对铜绿假单胞菌ATCC 27853、临床分离的15株铜绿假单胞菌的作用效果。刚果红平板实验鉴定临床分离的15株铜绿假单胞菌能否形成生物膜。结晶紫实验比较铜绿假单胞菌形成生物膜能力的强弱。连续稀释法绘制铜绿假单胞菌生物膜生长曲线及活菌计数。银染法观察氨曲南联用阿奇霉素对铜绿假单胞菌生物膜的情况。结果: 体外实验结果表明,氨曲南联用阿奇霉素,对铜绿假单胞菌ATCC 27853表现为协同作用;在临床分离的15株铜绿假单胞菌中,有6株表现为协同作用、有6株表现为相加作用、有3株表现为无关作用。刚果红平板实验表明,临床分离的15株铜绿假单胞菌中,有12株形成生物膜,3株未形成生物膜,成膜率为80%。结晶紫实验表明,编号16091217的菌株,与其他菌株相比,成膜能力最强。连续稀释法行活菌计数实验表明,阿奇霉素组、氨曲南组活菌数量与阿奇霉素+氨曲南组相比,有统计学差异。结论:氨曲南联用阿奇霉素对铜绿假单胞菌的体外作用以协同和相加作用为主,对能形成生物膜的铜绿假单胞菌,有协同杀菌作用。

关键词: 氨曲南, 阿奇霉素, 铜绿假单胞菌, 生物膜

Abstract:

 AIM: To investigate the effect and mechanism of Aztreonam combined Azithromycin on Pseudomonas aeruginosa ATCC 27853, and clinical separation of 15 strains of Pseudomonas aeruginosain vitro. METHODS: Broth dilution method and checkerboard dilution method were used to determine Aztreonam alone or in combination with Azithromycin on Pseudomonas aeruginosa ATCC27853 and 15 clinical isolates of Pseudomonas aeruginosa. Then, the biofilm formation of the clinical separation of 15 strains of Pseudomonas aeruginosa was identified by Congo red plate method. The crystal violet experiment was used to compare the ability of biofilm formation of Pseudomonas aeruginosa. Growth curve and viable count of Pseudomonas aeruginosa biofilm were investigated by continuous dilution method. The silver staining method was used to observe the biofilm of Pseudomonas aeruginosa by Aztreonam alone and in combination with Azithromycin. RESULTS: Azithromycin combined with Azithromycin on Pseudomonas aeruginosa ATCC 27853 showed synergistic effect; of the 15 isolates of Pseudomonas aeruginosa, 6 were synergistic, 6 additive, and 3 irrelevant. Congo red plate experiments show that the clinical separation of 15 strains of Pseudomonas aeruginosa, 12 strains can formed biofilm, 3 did not formed biofilm, and the rate of biofilm formation was 80%. The results of crystal violet experiment showed that the biofilm formation ability of 16091217 was the strongest when compared with other strains. The continuous dilution method of viable bacteria count experiment showed that the number of viable bacteria in Azithromycin group, Aztreonam group was significantly different compared with Azithromycin+Aztreonam group. The silver staining method showed that the inhibition effect of Azithromycin on the formation, early and mature stages of biofilm formation.CONCLUSION:The study found that the effect of Aztreonam combined with Azithromycin was mainly synergistic and additive in vitro. Aztreonam combined with Azithromycin presents synergistic bactericidal effect on Pseudomonas aeruginosa biofilm formation.

Key words: aztreonam, azithromycin, Pseudomonas aeruginosa, biofilm

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