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黄柏酮对单侧输尿管梗阻模型小鼠肾间质纤维化及铁死亡的影响 Δ
2
邱 莎 ,杨 丽 ,谭睿陟 ,刘 建 (1.西南医科大学附属医院肾病内科/四川省肾脏疾病临床医学研究中
1, 3 #
1
1*
心,四川 泸州 646000;2.西南医科大学附属中医医院中西医结合研究中心,四川 泸州 646000;3.西南医科
大学附属中医医院肾病内科,四川 泸州 646000)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)05-0554-06
DOI 10.6039/j.issn.1001-0408.2023.05.08
摘 要 目的 研究黄柏酮对单侧输尿管梗阻(UUO)模型小鼠肾间质纤维化的改善作用,并基于核转录因子红系 2 相关因子 2
(Nrf2)/谷胱甘肽过氧化物酶4(GPx4)信号通路介导的铁死亡探讨其作用机制。方法 将30只小鼠随机分为假手术组、模型组、厄
贝沙坦组(阳性对照,20 mg/kg)和黄柏酮低、高剂量组(10、40 mg/kg),每组6只。除假手术组外,其余各组小鼠均通过结扎单侧输
尿管建立UUO模型。术后,给药组小鼠腹腔注射相应药物,假手术组、模型组小鼠腹腔注射等体积生理盐水,每天1次,连续7 d。
检测小鼠血清中肌酐(Cr)、血尿素氮(BUN)水平,丙二醛(MDA)含量,总超氧化物歧化酶(T-SOD)活力和肾脏组织中Fe 浓度;苏
2+
木精-伊红(HE)染色和Masson染色观察小鼠肾脏组织形态和纤维化情况;免疫组化法检测小鼠肾脏组织中纤连蛋白(Fn)、α-平滑
肌肌动蛋白(α-SMA)、GPx4、Nrf2的表达,Western blot法和实时定量聚合酶链反应(RT-qPCR)检测小鼠肾脏组织中Fn、α-SMA、
Nrf2、GPx4、溶质载体家族7成员11(SLC7A11)蛋白及mRNA的表达水平。结果 与假手术组比较,模型组小鼠血清中Cr、BUN水
平,MDA含量,肾脏组织中Fe 浓度以及Fn、α-SMA蛋白和mRNA的表达水平均显著升高(P<0.05);血清中T-SOD活力,肾脏组
2+
织中Nrf2、GPx4、SLC7A11蛋白和mRNA的表达水平均显著降低(P<0.05);肾脏组织中肾小管扩张,胶原沉积明显,纤维条索较
粗且着色较深,肾间质炎症细胞浸润明显。经黄柏酮干预后,小鼠血清或肾脏组织中上述指标(黄柏酮低剂量组SLC7A11 mRNA
除外)水平均显著逆转(P<0.05),肾脏组织病理损伤、胶原沉积均有所减轻。结论 黄柏酮可改善 UUO 模型小鼠的肾间质纤维
化,具体作用机制可能与激活Nrf2/GPx4信号通路、抑制铁死亡有关。
关键词 黄柏酮;肾间质纤维化;单侧输尿管梗阻;Nrf2/GPx4信号通路;铁死亡
Effects of obacunone on renal interstitial fibrosis and ferroptosis in unilateral ureteral obstruction model
mice
QIU Sha ,YANG Li ,TAN Ruizhi ,LIU Jian (1. Dept. of Nephrology, the Affiliated Hospital of Southwest
1
1, 3
1
2
Medical University/Nephropathy Clinical Medical Research Center of Sichuan Province, Sichuan Luzhou
646000, China;2. Research Center of Traditional Chinese Medicine and Western Medicine Integration,the
Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Sichuan Luzhou 646000,
China;3. Dept. of Nephrology, the Affiliated Chinese Traditional Medicine Hospital of Southwest Medical
University, Sichuan Luzhou 646000, China)
ABSTRACT OBJECTVE To study the improvement effects of obacunone on renal interstitial fibrosis (RIF) in unilateral ureteral
obstruction (UUO) model mice, and to investigate its mechanism based on ferroptosis mediated by nuclear factor erythroid 2-
related factor 2(Nrf2)/glutathione peroxidase 4 (GPx4) signaling pathway. METHODS Thirty mice were randomly divided into
sham operation group, model group, irbesartan group (positive control, 20 mg/kg), obacunone low-dose and high-dose groups
(10, 40 mg/kg), with 6 mice in each group. Except for sham operation group, UUO model was established by ligation of
unilateral ureter in other groups. After operation, administration groups were given intraperitoneal injection of relevant medicine,
and sham operation group and model group were given intraperitoneal injection of constant volume of normal saline, once a day,
for 7 consecutive days. The levels of creatinine (Cr) and blood urea nitrogen (BUN), the content of malondialdehyde (MDA) and
the activities of total superoxide dismutase (T-SOD) in serum and the concentration of Fe in renal tissue were all detected. HE
2+
staining and Masson staining were performed to observe the
Δ 基金项目 四川省省级科技计划项目(No.2022YFHO118);西南
morphology and the fibrosis of renal tissues. Immunohisto-
医科大学-西南医科大学附属中医医院联合项目(No. 西南医大校
chemical staining was used to determine expressions of the
〔2018〕6号)
fibronectin (Fn), α -smooth muscle actin (α -SMA), GPx4
* 第一作者 硕 士 研 究 生 。 研 究 方 向 :肾 脏 病 学 。 E-mail:
964083717@qq.com and Nrf2 in renal tissue. Western blot and real-time
# 通信作者 主任医师,教授,硕士生导师。研究方向:肾脏病学。 quantitative polymerase chain reaction (RT-qPCR) were used
E-mail:834300205@qq.com to detect the protein and mRNA levels of Fn, α-SMA, Nrf2,
· 554 · China Pharmacy 2023 Vol. 34 No. 5 中国药房 2023年第34卷第5期