Page 78 - 《中国药房》2024年13期
P. 78
槲皮素对心肾综合征大鼠心肾功能的保护作用及机制
Δ
孔露娇 ,鲁 华 ,王 心,李 帅,刘 静,郭晓阳(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)13-1612-06
DOI 10.6039/j.issn.1001-0408.2024.13.12
摘 要 目的 基于磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(Akt)/核因子κB(NF-κB)信号通路探讨槲皮素对心肾综合征(CRS)大
鼠心肾功能的保护作用及机制。方法 取SD大鼠,采用左冠状动脉前降支结扎结合肾急性缺血再灌注的方法构建CRS模型,将
造模成功的大鼠随机分为模型组、槲皮素低剂量组(35 mg/kg)、槲皮素高剂量组(70 mg/kg)、槲皮素高剂量+740Y-P组(70 mg/kg
槲皮素+3.5 mg/kg PI3K/Akt/NF-κB信号通路激活剂740Y-P),每组12只;另取12只正常大鼠设为假手术组。每天给药1次,连续
14 d。给药结束后,检测大鼠心功能指标[左心室射血分数(LVEF)、舒张末期容积(EDV)、等容舒张时间(IVRT)]与肾功能指标[血
尿素氮(BUN)、血肌酐(Scr)、24 h尿蛋白];观察大鼠心肾组织纤维化情况;检测大鼠血清与心肾组织中炎症指标[白细胞介素1β
(IL-1β)、肿瘤坏死因子α(TNF-α)]水平及心肾组织中PI3K/Akt/NF-κB信号通路相关蛋白表达。结果 与假手术组比较,模型组大
鼠 BUN、24 h 尿蛋白、Scr 水平,心肾组织的胶原容积分数,血清与心肾组织中 IL-1β、TNF-α 水平,心肾组织中 PI3K、Akt、NF-κB
p65蛋白磷酸化水平均显著升高(P<0.05),LVEF、IVRT、EDV均显著降低(P<0.05)。与模型组比较,槲皮素低、高剂量组大鼠上
述指标均显著改善(P<0.05),且高剂量组的改善效果更好(P<0.05)。740Y-P 逆转了高剂量槲皮素对各指标的改善作用(P<
0.05)。结论 槲皮素可减轻CRS大鼠心肾纤维化和功能损伤,其作用机制可能与抑制PI3K/Akt/NF-κB信号通路激活有关。
关键词 槲皮素;PI3K/Akt/NF-κB信号通路;心肾综合征;心肾功能;纤维化
Protective effect and mechanism of quercetin on cardiac and renal functions in rats with cardiorenal
syndrome
KONG Lujiao,LU Hua,WANG Xin,LI Shuai,LIU Jing,GUO Xiaoyang(Dept. of Nephrology, Xingtai People’s
Hospital, Hebei Xingtai 054000, China)
ABSTRACT OBJECTIVE To investigate the protective effect and mechanism of quercetin on the cardiac and renal functions of
rats with cardiorenal syndrome (CRS) based on the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/nuclear factor kappa-
B (NF-κB) signaling pathway. METHODS CRS model of SD rats was induced by left anterior descending coronary artery ligation
combined with acute renal ischemia-reperfusion. Model rats were randomly separated into model group, quercetin low-dose group
(35 mg/kg), quercetin high-dose group (70 mg/kg), high-dose of quercetin+740Y-P group (70 mg/kg quercetin+3.5 mg/kg PI3K/Akt/
NF-κB signaling pathway activator 740Y-P), with 12 rats in each group. Another 12 normal rats were selected as sham operation
group. They were given relevant drugs, once a day, for 14 consecutive days. After administration, the cardiac function indexes [left
ventricular ejection fraction (LVEF), end-diastolic volume (EDV), isovolumic relaxation time (IVRT)] and renal function
indicators [blood urea nitrogen (BUN), 24-hour urine protein, and serum creatinine (Scr)] were detected, and fibrosis in the
cardiac and renal tissues was observed; the levels of inflammatory indexes [interleukin-1β (IL-1β) and tumor necrosis factor-α
(TNF-α)] in the serum and cardiac and renal tissues as well as the expression of PI3K/Akt/NF-κB pathway-related proteins in the
cardiac and renal tissues were detected. RESULTS Compared with sham operation group, the levels of BUN, 24-hour urine protein
and Scr, collagen volume fraction of cardiac and renal tissues, the levels of IL-1β and TNF-α in serum and cardiac and renal
tissues, and the phosphorylation of PI3K, Akt and NF-κB p65 protein in cardiac and renal tissues were increased significantly in
model group (P<0.05); the levels of LVEF, IVRT and EDV were reduced significantly (P<0.05). Compared with the model
group, the above indexes were reversed significantly in quercetin low-dose and high-dose groups (P<0.05), and the reversal effect
was better in the high-dose group (P<0.05). 740Y-P restored the reverse effect of high-dose quercetin on the indexes (P<0.05).
CONCLUSIONS Quercetin can alleviate cardiac and renal
Δ 基金项目 河北省 2023 年度医学科学研究课题计划项目(No. fibrosis and function injury, the mechanism of which may be
20232016) associated with inhibiting the activation of the PI3K/Akt/NF-
*第一作者 主治医师,硕士。研究方向:心肾综合征的诊治及基
κB signaling pathway.
础研究。E-mail:448626740@qq.com
# 通信作者 主任医师,博士。研究方向:各种急慢性肾脏疾病的 KEYWORDS quercetin; PI3K/Akt/NF-κB signaling pathway;
诊治。E-mail:31612677@qq.com cardiorenal syndrome; cardiac and renal function; fibrosis
· 1612 · China Pharmacy 2024 Vol. 35 No. 13 中国药房 2024年第35卷第13期