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The Journal of Practical Medicine ; (24): 2883-2886, 2014.
Article in Chinese | WPRIM | ID: wpr-459044

ABSTRACT

Objective To investigate the therapeutic effect of ciprofloxacin (Cipro) conjugated with 11 poly-arginine peptide (R11) on rabbit model with bacterial cystitis (BC). Methods 50 New Zealand rabbits of 4-month old were chosen to establish the models and evenly divided into 5 groups randomly : Group A: normal control; Group B: intravesical instillation (II) of R11; Group C: II of Cipro; Group D: II of R11-Cipro; Group E: intravenous injection of Cipro. Several parameters were observed which included: urinary frequency, positive rate of urine culture, histopathological analysis of cystitis stained with hematoxylin and eosin. Results Severe inflammatory responses and massive infiltration of inflammatory cells were observed after the models were established. R11-Cipro group was better than intravenous injection of Cipro group in treating cystitis (P < 0.05). R11-Cipro group was better than the other four groups in urinary frequency and urine culture. Conclusions Intravesical instillation of R11-Cipro demonstrated significant therapeutic effect on bacterial cystitis. R11 , as an efficient vector, could deliver specific antibiotics to bladder mucosa precisely and function well locally.

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