Antimicrobial and antifouling efficacy of urinary catheters impregnated with a combination of macrolide and fluoroquinolone antibiotics against Pseudomonas aeruginosa

作者：Saini Hina; Chhibber Sanjay; Harjai Kusum

来源：Biofouling, 2016, 32(5): 511-522.

DOI：10.1080/08927014.2016.1155564

• Azithromycin
• ciprofloxacin
• catheter associated urinary tract infections
• Pseudomonas aeruginosa
• urinary catheter

The incidence of catheter associated urinary tract infections (CAUTIs) is increasing worldwide. This study was designed to modify a biomaterial by impregnating a silicone urinary catheter with combination of a macrolide, azithromycin (AZM) and a fluoroquinolone, ciprofloxacin (CIP). Drug release profiles showed slow yet continuous release of antibiotics from catheters for one month. In vitro efficacy testing showed that group B catheters [3% (w v(-1)) CIP + 6% (w v(-1)) AZM] outperformed group A catheters [2% (w v(-1)) CIP + 5% (w v(-1)) AZM] by (1) showing larger zones of inhibition (> 31 mm) compared to group A (< 28 mm) for up to 30 days against Pseudomonas aeruginosa PAO1; (2) killing adhered bacteria in 24 h compared to 24-48 h in group A; (3) showing longer antimicrobial durability for four weeks; and (4) exhibiting a stable real-time shelf life of one year, suggesting that these catheters can be explored in clinical settings, especially in long-term CAUTI.

• 出版日期2016