Effect of 'Fuzheng Qingre Tonglin' prescription on rats with complicated urinary tract infection caused by ESBLs-producing Escherichia coli

摘要

Objective: To observe the effect of traditional Chinese medicine "Fuzheng Qingre Tonglin"prescription on rats with complicated urinary tract infection caused by extended-spectrumβ-lactamases (ESBLs)-producing Escherichia coli and its possible mechanism. Methods:Specific-pathogen-free female SD rats with 7-9 weeks old were randomly divided into model group, levofloxacin group, low-dose Fuzheng Qingre Tonglin group, high-dose Fuzheng Qingre Tonglin group, levofloxacin+Fuzheng Qingre Tonglin group (n=8 in each above group), and also there was a control group with 5 rats. Each group was administered intragastrically 2 days after model establishment for 14 consecutive days. The general condition of the rats was observed. Renal pathological changes were observed by light microscopy under hematoxylin-eosin staining. The number of white blood cells and the percentage of neutral particles (NEUT%) were detected. ELISA was used for the determination of C-reactive protein (CRP), CD4+, CD8+ in the blood, and secretory immunoglobulin A (SIgA), N-acetyl-β-D-glucosidase (NAG) molecules in urine. Results: There were a large number of inflammatory cells in the kidney of the model group and the levofloxacin group. The inflammatory cells in the treatment group were significantly reduced. The NEUT% and CRP in the blood of each treatment group and the NAG in the urine were significantly lower than those in the model group (P<0.05), except levofloxacin group. Compared with the model group, except for the levofloxacin group, serum CD4 concentration and CD4/CD8 ratio in the other treatment groups were significantly decreased, and CD8 molecules were significantly increased (P<0.05). Conclusion: "Fuzheng Qingre Tonglin" can alleviate systemic and local inflammation of complicated urinary tract infections in rats. It may also have the effect of re-sensing the insensitive antibacterial drug to bacteria and may have the function of regulating immune function and protecting kidney function in rats.