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八正散对慢性尿路感染大鼠的改善作用及机制研究
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葸慧荣 ,李小凤 ,蒋晓磊 ,李 靖 ,马正安 ,李喜香 (1.甘肃省中医院药学部,兰州 730050;2.甘肃中医
1*
1
1
1
2
药大学药学院,兰州 730000)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2025)20-2525-06
DOI 10.6039/j.issn.1001-0408.2025.20.07
摘 要 目的 探讨八正散对大肠埃希菌致大鼠慢性尿路感染(CUTI)的改善作用及机制。方法 将大鼠分为正常对照组、模型
组、左氧氟沙星组(45 mg/kg)和八正散组(4.95 g/kg),每组10只。除正常对照组外,其余各组大鼠经尿道向膀胱内注射大肠埃希
菌菌液(1×10 cfu/mL)构建CUTI模型。造模同时,各组大鼠灌胃相应药液或水,每天1次,连续4周。末次给药后,检测大鼠血常
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规(白细胞数量和淋巴细胞百分比)以及血清中炎症因子[白细胞介素1β(IL-1β)、IL-6、IL-8、肿瘤坏死因子α(TNF-α)]、免疫指标
[CD4、CD8、分泌型免疫球蛋白A(SIgA)]、肾功能指标[胱抑素C(Cys-C)、α1-微球蛋白(α1-MG)、尿素、肌酐]水平;观察大鼠肾脏
和膀胱组织的病理学形态;检测大鼠膀胱组织中Toll样受体4(TLR4)、核因子κB(NF-κB)、核苷酸结合结构域富含亮氨酸重复序
列和含热蛋白结构域受体 3(NLRP3)蛋白的表达水平。结果 与正常对照组比较,模型组大鼠血清中 IL-1β、IL-6、IL-8、TNF-α、
CD8、Cys-C、α1-MG、尿素、肌酐水平以及膀胱组织中TLR4、NF-κB、NLRP3蛋白的表达水平均显著升高(P<0.05),CD4、SIgA水
平均显著降低(P<0.05);肾脏和膀胱组织均可见大量炎症细胞浸润等病理学改变。与模型组比较,八正散组大鼠上述定量指标
均显著逆转(P<0.05),肾脏和膀胱组织均未见明显炎症性病变。结论 八正散可减轻CUTI大鼠炎症反应,增强其免疫功能,上述
作用可能与抑制TLR4/NF-κB/NLRP3信号通路有关。
关键词 八正散;慢性尿路感染;炎症反应;免疫功能;大肠埃希菌;TLR4/NF-κB/NLRP3信号通路
Improvement effects and mechanism of Bazheng powder on chronic urinary tract infection in rats
1
XI Huirong ,LI Xiaofeng ,JIANG Xiaolei ,LI Jing ,MA Zheng’an ,LI Xixiang (1. Dept. of Pharmacy, Gansu
1, 2
1
2
1
1
Provincial Hospital of Traditional Chinese Medicine, Lanzhou 730050, China;2. College of Pharmacy, Gansu
University of Chinese Medicine, Lanzhou 730000, China)
ABSTRACT OBJECTIVE To investigate the improvement effects and its mechanism of Bazheng powder on chronic urinary tract
infection (CUTI) induced by Escherichia coli in rats. METHODS The rats were divided into normal control group, model group,
levofloxacin group (45 mg/kg) and Bazheng powder group (4.95 g/kg), with 10 rats in each group. Except for the normal control
group, other groups were administered an intravesical injection of Escherichia coli suspension (1×10⁸ cfu/mL) via the urethra to
establish CUTI model; at the same time, rats in each group were administered the corresponding medicinal solution or water by
gavage once a day for 4 consecutive weeks. After the last medication, blood routine tests (white blood cell count and lymphocyte
percentage), the levels of serum inflammatory factors [interleukin-1β (IL-1β), IL-6, IL-8, tumor necrosis factor-α (TNF-α)],
and immune indicators [CD4, CD8, secretory immunoglobulin A (SIgA)], renal function indicators [cystatin C (Cys-C), α1-
microglobulin (α1-MG), urea and creatinine] were all determined; the pathological changes in renal and bladder tissues in rats
were observed. The protein expressions of Toll-like receptor 4 (TLR4), nuclear factor- κB (NF- κB), and nucleotide-binding
domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3) in rat bladder tissues were detected. RESULTS
Compared with the normal control group, the levels of IL-1β, IL-6, IL-8, TNF-α, CD8, Cys-C, α1-MG, urea and creatinine in
serum, as well as the protein expressions of TLR4, NF-κB and NLRP3 in bladder tissues, were significantly elevated in the model
group (P<0.05). Conversely, the levels of CD4 and SIgA were significantly decreased (P<0.05). Pathological changes, such as
extensive infiltration of inflammatory cells, were observed in both renal and bladder tissues. Compared with the model group, the
above quantitative indicators in the Bazheng powder group were significantly improved (P<0.05), with no obvious inflammatory
lesions observed in either renal or bladder tissues. CONCLUSIONS Bazheng powder can alleviate inflammatory reaction and
improve the immune function of CUTI rats, and its
Δ 基金项目 甘肃省财政转移支付地方项目——中西医结合防治
mechanism may be related to the inhibition of TLR4/NF- κB/
耐药菌研究(No.20210140305);国家中医优势专科建设项目、2025 年
NLRP3 signaling pathway.
全国老药工传承工作室建设项目(No.甘财社〔2024〕118号) KEYWORDS Bazheng powder; chronic urinary tract infection;
*第一作者 主管药师,硕士。研究方向:中药及复方药理学。
inflammatory reaction; immune function; Escherichia coli;
E-mail:18709404297@163.com
# 通信作者 主任中药师,博士生导师。研究方向:中药制剂的开 TLR4/NF-κB/NLRP3 signaling pathway
发与研究。E-mail:lixixiang929@163.com
中国药房 2025年第36卷第20期 China Pharmacy 2025 Vol. 36 No. 20 · 2525 ·

