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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
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          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
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          XI Huirong ,LI Xiaofeng ,JIANG Xiaolei ,LI Jing ,MA Zheng’an ,LI Xixiang (1. Dept. of Pharmacy, Gansu
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          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 ·
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