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隐丹参酮调节PI3K/Akt/mTOR信号通路对心肾综合征大鼠心肾
功能的保护作用
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王 心 ,鲁 华 ,孔露娇,郭晓阳,马亭亭,卢 玥(邢台市人民医院肾内科,河北 邢台 054000)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2024)17-2096-06
DOI 10.6039/j.issn.1001-0408.2024.17.07
摘 要 目的 探究隐丹参酮(CTS)调节磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)信号通路
对心肾综合征(CRS)大鼠心肾功能的保护作用及机制。方法 采用左冠状动脉前降支结扎结合肾急性缺血再灌注损伤的方法建
立大鼠CRS模型,并将模型大鼠随机分为CRS模型组(CRS组)、低剂量CTS干预组(CTS-L组)、高剂量CTS干预组(CTS-H组)和
高剂量CTS+PI3K激活剂740Y-P组(CTS-H+740Y-P组),每组12只;另设12只大鼠为正常对照组(Normal组),手术但不造模。CTS-L
组、CTS-H 组大鼠分别灌胃 30、60 mg/kg CTS,每日 1 次,连续 14 d;CTS-H+740Y-P 组除灌胃 CTS 60 mg/kg 外,还需腹腔注射 10
mg/kg 740Y-P,每日1次,连续14 d。末次给药后,检测大鼠心功能指标[左室射血分数(LVEF)、左室收缩末期内径(LVESD)、左室
舒张末期内径(LVEDD)、左室短轴缩短率(LVFS)]和肾功能指标[24 h 尿蛋白、血尿素氮(BUN)、血肌酐(Scr)、脑钠肽(BNP)]水
平;观察大鼠心肾组织病理学变化和纤维化情况;检测大鼠心肾组织中PI3K/Akt/mTOR信号通路相关蛋白的表达水平。结果 与
Normal组比较,CRS组大鼠LVEF、LVFS均显著降低(P<0.05);LVESD、LVEDD、24 h尿蛋白,血清BUN、Scr、BNP水平,心肾组织
胶原染色面积,心肾组织中PI3K、Akt、mTOR蛋白磷酸化水平均显著升高/增大(P<0.05);心肌细胞形态肥大、排列紊乱;肾小管
结构紊乱、上皮细胞皱缩,存在炎症细胞浸润。与CRS组比较,CTS-L组、CTS-H组大鼠上述指标变化均显著逆转(P<0.05),心肾
功能有所恢复,病理损伤和纤维化程度减轻。PI3K激活剂740Y-P减弱了CTS对CRS大鼠心肾功能的保护作用。结论 CTS可保
护CRS大鼠的心肾功能,其作用机制可能与抑制PI3K/Akt/mTOR信号通路有关。
关键词 隐丹参酮;PI3K/Akt/mTOR信号通路;心肾综合征;心肾功能
Protective effects of cryptotanshinone on heart and kidney function in rats with cardiorenal syndrome by
regulating PI3K/Akt/mTOR signaling pathway
WANG Xin,LU Hua,KONG Lujiao,GUO Xiaoyang,MA Tingting,LU Yue(Dept. of Nephrology, Xingtai
People’s Hospital, Hebei Xingtai 054000, China)
ABSTRACT OBJECTIVE To investigate the protective effect and mechanism of cryptotanshinone (CTS) on heart and kidney
function in rats with cardiorenal syndrome (CRS) by regulating phosphoinositide kinase-3 (PI3K)/protein kinase B (Akt)/
mammalian target of rapamycin (mTOR) signaling pathway. METHODS CRS model of rats was induced by left anterior
descending coronary artery ligation combined with acute renal ischemia-reperfusion injury. Model rats were randomly divided into
CRS model group (CRS group), low-dose CTS group (CTS-L), high-dose CTS group (CTS-H group), high-dose CTS+PI3K
activator 740Y-P group (CTS-H+740Y-P group), with 12 rats in each group. Another 12 rats were selected as the normal control
group (Normal group) and were carried out surgery without modeling. CTS-L group and CTS-H group were respectively given CTS
30 and 60 mg/kg intragastrically, once a day, for consecutive 14 d. Besides the intervention of CTS 60 mg/kg intragastrically,
CTS-H+740Y-P group was given 10 mg/kg 740Y-P intraperitoneally, once a day, for 14 consecutive days. After the last
medication, the levels of cardiac function [left ventricular ejection fraction (LVEF), left ventricular end-systolic diameter
(LVESD), left ventricular end-diastolic diameter (LVEDD), left ventricular fraction shortening (LVFS)] and renal function [24 h
urinary protein, blood urea nitrogen (BUN), serum creatinine (Scr), brain natriuretic peptide (BNP)] were detected in rats. The
pathological changes and fibrosis of the heart and kidney in rats were observed; the expressions of PI3K/Akt/mTOR signaling
pathway in heart and renal tissue were all detected. RESULTS Compared with Normal group, the levels of LVEF and LVFS in rats
were all decreased significantly in CRS group (P<0.05); the levels of LVESD, LVEDD, 24 h urinary protein, serum levels of
BUN, Scr and BNP, collagen area and the phosphorylation of
Δ 基金项目 河北省 2023 年度医学科学研究课题计划项目(No. PI3K, Akt and mTOR protein in heart and renal tissue were
20232016) all increased significantly (P<0.05). The morphology of
*第一作者 主治医师,硕士。研究方向:各种急慢性肾病的诊治。
myocardial cells was enlarged and disordered; the structure of
E-mail:18310683019@163.com
# 通信作者 主任医师,博士。研究方向:血液净化及血管通路技 renal tubules was disordered, epithelial cells were wrinkled,
术。E-mail:31612677@qq.com and there was infiltration of inflammatory cells. Compared
· 2096 · China Pharmacy 2024 Vol. 35 No. 17 中国药房 2024年第35卷第17期