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大黄素对感染性早产大鼠的改善作用及机制
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          曹定娅    1, 2* ,武晓娟 ,付婷婷 ,宋 兵 (1.广州医科大学附属第三医院产前诊断科,广州 510150;2.广东
                           1, 2
                                     1, 2
          省产科重大疾病重点实验室,广州 510150;3.广州医科大学附属第三医院妇产科,广州 510150)
          中图分类号  R965      文献标志码  A      文章编号  1001-0408(2024)21-2629-05
          DOI  10.6039/j.issn.1001-0408.2024.21.09


          摘  要  目的  探究大黄素对感染性早产大鼠的改善作用及机制。方法  构建感染性早产大鼠模型,将其分成模型组、大黄素组
         (60 mg/kg,灌胃)、核因子κB(NF-κB)抑制蛋白激酶(IKK)激活组(2 μg pcDNA3.1-IKK重组质粒,尾静脉注射)、大黄素+IKK激活
          组(灌胃60 mg/kg大黄素+尾静脉注射2 μg pcDNA3.1-IKK重组质粒),每组14只。另取14只受孕雌鼠作为对照组。各组大鼠给
          予相应药物干预7 d。检测大鼠子宫肌条肌张力和血清中炎症指标[白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)]和氧化
          应激指标[超氧化物歧化酶(SOD)、丙二醛(MDA)、过氧化氢酶(CAT)]水平;观察大鼠子宫组织病理学形态变化;检测大鼠子宫组
          织中NOD样受体蛋白3(NLRP3)、剪切型胱天蛋白酶1(cleaved-caspase-1)和IKK/NF-κB抑制蛋白(IκB)/NF-κB信号通路相关蛋
          白表达水平。结果  与对照组相比,模型组大鼠子宫平滑肌出现了大量炎症细胞浸润,细胞分布不规则;子宫肌条肌张力和血清中
          IL-1β、IL-6、TNF-α、MDA 水平以及子宫组织中 NLRP3、cleaved-caspase-1、IKK、IκB、NF-κB p65 蛋白表达水平均显著升高(P<
          0.05),血清中SOD、CAT水平均显著降低(P<0.05)。与模型组相比,大黄素组大鼠子宫平滑肌层炎症细胞浸润现象减轻,各定量
          指标均明显改善(P<0.05);IKK 激活组大鼠子宫平滑肌层炎症细胞浸润现象加重,各定量指标均进一步恶化(P<0.05)。激活
          IKK可明显减弱大黄素对感染性早产大鼠上述指标的改善作用(P<0.05)。结论  大黄素可能通过抑制IKK/IκB/NF-κB信号通路
          活性,减轻炎症反应和氧化应激,从而改善感染性早产大鼠子宫平滑肌收缩。
          关键词  大黄素;感染性早产;IKK/IκB/NF-κB信号通路;子宫平滑肌;炎症;氧化应激

          Ameliorative effect and mechanism of emodin on infectious preterm rats
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          CAO Dingya ,WU Xiaojuan ,FU Tingting ,SONG Bing (1.  Dept.  of  Prenatal  Diagnosis,  the  Third
                                     1, 2
                     1, 2
          Hospital Affiliated to Guangzhou Medical University, Guangzhou 510150, China;2. Guangdong Provincial Key
          Laboratory  of  Obstetrics  Major  Diseases,  Guangzhou  510150,  China;3.  Dept.  of  Obstetrics  and  Gynecology,
          the Third Hospital Affiliated to Guangzhou Medical University, Guangzhou 510150, China)
          ABSTRACT   OBJECTIVE  To  explore  the  ameliorative  effect  and  mechanism  of  emodin  on  infectious  preterm  rats.  METHODS
          The  infectious  preterm  rat  model  was  established  and  divided  into  model  group,  emodin  group (60  mg/kg,  i.g.),  IKK  activation
          group (2  μg  pcDNA3.1-IKK  recombinant  plasmid  via  tail  vein),  emodin+IKK  activation  group (i. g.  60  mg/kg  emodin+2  μg
          pcDNA3.1-IKK  recombinant  plasmid  via  tail  vein),  with  14  rats  in  each  group. Another  14  pregnant  female  rats  were  set  up  as
          control  group.  Each  group  received  corresponding  intervention  for  7  days. The  muscle  tension  of  the  uterine  muscle  strip,  and  the
          indicator  levels  of  serum  inflammation  [interleukin  1β (IL-1β),  IL-6,  tumor  necrosis  factor  α(TNF- α)]  and  oxidative  stress
          [superoxide dismutase (SOD), malondialdehyde (MDA), catalase (CAT)] were detected; the pathological morphological changes
          of  uterine  tissue  in  rats  were  observed;  the  protein  expressions  of  NOD-like  receptor  protein  3 (NLRP3),  cleaved-caspase-1  and
          IKK/IκB/NF-κB signaling pathway were detected. RESULTS  Compared with control group, a large number of inflammatory cells
          infiltrated  into  the  smooth  muscle  layer  of  uterus  in  model  group  with  irregular  cell  distribution;  the  uterine  muscle  strip  muscle
          tone,  serum  levels  of  IL-1β,  IL-6, TNF-α  and  MDA,  protein  expressions  of  NLRP3,  cleaved-caspase-1,  IKK,  IκB  and  NF-κB
          p65  in  uterine  tissue  were  significantly  increased  in  model  group,  and  the  serum  levels  of  SOD  and  CAT  were  significantly
          decreased (P<0.05). Compared with the model group, the infiltration of inflammatory cells in the uterine smooth muscle layer was
          reduced  in  the  emodin  group,  and  all  quantitative  indexes  were  significantly  improved (P<0.05);  the  infiltration  of  inflammatory
          cells  in  the  uterine  smooth  muscle  layer  was  increased  in  IKK  activation  group,  and  all  quantitative  indexes  further  deteriorated
         (P<0.05).  Activation  of  IKK  could  significantly  reduce  the  improvement  effect  of  emodin  on  the  above  indexes  in  infectious
          preterm  rats (P<0.05).  CONCLUSIONS  Emodin  can  relieve  inflammation  and  oxidative  stress  in  infectious  preterm  rats
                                                             by  inhibiting  the  IKK/IκB/NF- κB  signaling  pathway,  thus
             Δ 基金项目 广州市卫生健康科技项目(No. 20221A011088)            improving uterine smooth muscle contraction.
             *第一作者 主治医师,硕士。研究方向:围产医学。E-mail:
          caodingya596@163.com                               KEYWORDS     emodin;  infectious  preterm;  IKK/IκB/NF- κB
             # 通信作者 助理研究员,博士。研究方向:妊娠期疾病诊治。                   signaling  pathway;  uterine  smooth  muscle;  inflammation;
          E-mail:bingsong2012683034@gzhmu.edu.cn             oxidative stress


          中国药房  2024年第35卷第21期                                              China Pharmacy  2024 Vol. 35  No. 21    · 2629 ·
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