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薯蓣皂苷对脓毒症大鼠肾损伤的影响及机制
                                                                              Δ


          申 翔 ,徐尚刚,黄洋辉,罗 斌,周裕丰,梁隆斌(成都大学附属医院急诊科,成都 610081)
                *
                                                       #
          中图分类号  R965;R285.5      文献标志码  A      文章编号  1001-0408(2024)11-1334-05
          DOI  10.6039/j.issn.1001-0408.2024.11.09

          摘   要  目的  探究薯蓣皂苷对脓毒症大鼠肾损伤的影响及可能机制。方法  采用盲肠结扎和穿刺法建立脓毒症大鼠模型。将建
          模成功的60只大鼠按照随机数字表法分为模型组(0.5%羧甲基纤维素钠溶液),薯蓣皂苷低、中、高剂量组(30、60、120 mg/kg)和
          地塞米松组(阳性对照,10 mg/kg),每组12只;另取12只大鼠作为假手术组(0.5%羧甲基纤维素钠溶液)。造模15 min后,各组大
          鼠尾静脉注射给药/0.5%羧甲基纤维素钠溶液。给药24 h后,检测大鼠血清中肌酐(Cr)、尿素氮(BUN)、中性粒细胞明胶酶相关脂
          质运载蛋白(NGAL)、肾损伤分子 1(KIM-1)、白细胞介素 6(IL-6)、IL-1β、肿瘤坏死因子 α(TNF-α)水平以及肾组织中丙二醛
         (MDA)水平、超氧化物歧化酶(SOD)活性和核因子E2相关因子2(Nrf2)、血红素加氧酶1(HO-1)、NOD样受体蛋白3(NLRP3)表
          达量,并观察肾组织病理形态学变化。结果  与模型组比较,薯蓣皂苷低、中、高剂量组大鼠肾组织病理损伤明显改善,血清中Cr、
          BUN、NGAL、KIM-1、IL-6、IL-1β、TNF-α水平和肾组织中MDA水平、NLRP3蛋白表达量均显著降低(P<0.05),肾组织中SOD活
          性和Nrf2、HO-1蛋白表达量均显著升高(P<0.05),且薯蓣皂苷的作用具有剂量依赖性(P<0.05);薯蓣皂苷高剂量组和地塞米松
          组大鼠肾组织病理损伤情况相似,上述指标水平差异均无统计学意义(P>0.05)。结论  薯蓣皂苷可能是通过激活Nrf2/HO-1信号
          通路抑制NLRP3炎性小体,实现对炎症因子表达和氧化应激的抑制,从而发挥对脓毒症肾损伤的保护作用。
          关键词  薯蓣皂苷;Nrf2/HO-1信号通路;NLRP3炎性小体;脓毒症;肾损伤

          Effect and mechanism of dioscin on renal injury in septic rats
          SHEN Xiang,XU Shanggang,HUANG Yanghui,LUO Bin,ZHOU Yufeng,LIANG Longbin(Dept.  of
          Emergency, the Affiliated Hospital of Chengdu University, Chengdu 610081, China)

          ABSTRACT    OBJECTIVE  To  investigate  the  effect  of  dioscin  on  renal  injury  in  septic  rats  and  its  possible  mechanism.
          METHODS  The  septic  rat  model  was  induced  by  using  cecal  ligation  and  puncture.  Sixty  model  rats  were  randomly  divided  into
          model group (0.5% sodium carboxymethyl cellulose solution), dioscin low-dose, medium-dose and high-dose groups (30, 60, 120
          mg/kg) and dexamethasone group (positive control, 10 mg/kg), with 12 rats per group; another 12 rats were selected as the sham
          operation  group (0.5%  sodium  carboxymethyl  cellulose  solution). After  15  minutes  of  modeling,  rats  in  each  group  were  injected
          with medicine/0.5% sodium carboxymethyl cellulose solution via the tail vein. Twenty-four hours after administration, the levels of
          creatinine (Cr), blood urea nitrogen (BUN), neutrophil gelatinase associated lipocalin (NGAL), kidney injury molecule-1 (KIM-
          1),  interleukin  6 (IL-6),  IL-1β  and  tumor  necrosis  factor-α (TNF-α)  in  serum  and  malondialdehyde (MDA)  in  renal  tissue,
          superoxide  dismutase (SOD)  activity  and  the  protein  expressions  of  nuclear  factor  E2-related  factor  2 (Nrf2),  heme  oxygenase-1
         (HO-1),  NOD-like  receptor  protein  3 (NLRP3)  were  detected;  renal  histomorphology  was  observed.  RESULTS  Compared  with
          model  group,  pathological  injury  of  renal  tissue  was  improved  significantly  in  dioscin  low-dose,  medium-dose  and  high-dose
          groups; the levels of Cr, BUN, NGAL, KIM-1, IL-6, IL-1β and TNF-α in serum, MDA level and protein expression of NLRP3
          in  renal  tissue  were  decreased  significantly (P<0.05);  SOD  activity  in  renal  tissue,  protein  expressions  of  Nrf2  and  HO-1  were
          increased  significantly (P<0.05),  in  a  dose-dependent  manner (P<0.05).  The  pathological  damage  of  renal  tissue  in  the  dioscin
          high-dose group was similar to dexamethasone group, and there was no statistically significant difference in the levels of the above
          indicators (P>0.05).  CONCLUSIONS  Dioscin  can  activate  the  Nrf2/HO-1  signaling  pathway  to  inhibit  NLRP3  inflammasome,
          and realize the inhibition of inflammatory factors and oxidative stress, so as to protect the kidney injury in sepsis.
          KEYWORDS     dioscin; Nrf2/HO-1 signaling pathway; NOD-like receptor protein 3 inflammasome; sepsis; renal injury



              脓毒症是感染引发的全身性炎症综合征,会造成多                          症患者的重要死亡原因之一。脓毒症患者肾损伤发生
          器官功能衰竭,影响患者生命安全,已成为当今临床重                            率高达50%,该类患者预后差、死亡率高,且目前尚无有
                                                                        [1]
                                                              效治疗方法 。
              Δ 基金项目 四川省卫生健康委员会科研课题(No.21PJ032)
                                                                  薯蓣皂苷为薯蓣根提取物,具有抗肿瘤、抗感染、抗
             *第一作者 主治医师,硕士研究生。研究方向:脓毒症诊治。
          E-mail:shenxiangxiang627@163.com                    炎、抗病毒等多种药理作用。据报道,薯蓣皂苷可减轻
                                                                                                           [2]
                                                              脂多糖诱导的急性肺损伤后的炎症反应和氧化应激 ;
              # 通信作者 主任医师。研究方向:急诊重症疾病诊治。E-mail:
          381329587@qq.com                                    可抑制核因子 κB 信号通路,从而改善尿酸诱导的肾小

          · 1334 ·    China Pharmacy  2024 Vol. 35  No. 11                            中国药房  2024年第35卷第11期
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