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石淋清颗粒预防大鼠草酸钙肾结石形成的作用机制研究
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靳潇潇 ,李卫胜,杨 雄,郑 聪,何文强(河南中医药大学第一附属医院泌尿外科二区,郑州 450003)
*
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2022)23-2858-06
DOI 10.6039/j.issn.1001-0408.2022.23.08
摘 要 目的 探讨石淋清颗粒预防大鼠草酸钙肾结石形成的作用机制。方法 将60只大鼠随机分为空白组、模型组和石淋清颗
粒低、中、高剂量组(6.5、13、26 g/kg)及去乙酰化酶3(SIRT3)抑制剂组(石淋清颗粒26 g/kg+SIRT3抑制剂25 mg/kg),每组10只。
除空白组外,其余各组大鼠将饮水更换为 1% 乙二醇溶液,并每天灌胃 2% 氯化铵溶液 2 mL,连续 4 周,以复制肾结石大鼠模型。
造模同时,给药组灌胃相应药物,空白组和模型组灌胃等体积生理盐水。测定大鼠24 h尿量、尿液pH值和尿液中Ca 、草酸(Ox)
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含量及血清中肌酐(Cr)、血尿素氮(BUN)、Ca 含量;观察大鼠肾组织病理学形态、草酸钙肾结晶情况和超微结构;检测大鼠肾组
织中丙二醛(MDA)、超氧化物歧化酶(SOD)、活性氧(ROS)、骨桥蛋白(OPN)水平;检测大鼠肾组织中 SIRT3、叉头框蛋白 O3a
(FOXO3a)、SOD2 mRNA和蛋白的表达水平。结果 与空白组比较,模型组大鼠24 h尿量、尿液pH值、肾组织中SOD水平,以及
SIRT3、FOXO3a、SOD2 mRNA和蛋白表达水平均显著降低(P<0.05或P<0.01);尿液中Ca 、Ox含量,血清中Cr、BUN、Ca 含量,
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肾组织中ROS、MDA、OPN水平均显著升高(P<0.01);肾组织病理损伤严重,可见大量弥漫性分布的黑色结晶,肾小球基膜增厚,
足突细胞和肾小管上皮细胞中的线粒体水肿。与模型组比较,石淋清颗粒各剂量组大鼠上述指标含量/水平(低剂量组血清中Ca 2+
含量除外)均显著逆转(P<0.05或P<0.01),肾组织病理损伤、草酸钙肾结晶、肾小球足突细胞和肾小管上皮细胞中的线粒体损伤
均明显改善;而SIRT3抑制剂组上述指标变化差异无统计学意义(P>0.05)。结论 石淋清颗粒可有效抑制大鼠草酸钙肾结石的
形成,改善肾损伤,其作用机制可能与提高抗氧化作用和激活SIRT3/ FOXO3a信号通路有关。
关键词 石淋清颗粒;草酸钙;肾结石;肾损伤;抗氧化;SIRT3/FOXO3a信号通路
Study on the mechanism of Shilinqing granules preventing the formation of calcium oxalate kidney stones
in rats
JIN Xiaoxiao,LI Weisheng,YANG Xiong,ZHENG Cong,HE Wenqiang(Section Two, Department of Urology,
the First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450003, China)
ABSTRACT OBJECTIVE To investigate the mechanism of Shilinqing granules preventing the formation of calcium oxalate
kidney stones in rats. METHODS Sixty rats were randomly divided into blank group, model group, Shilingqing granules low-
dose, medium-dose and high-dose groups (6.5, 13, 26 g/kg), SIRT3 inhibitor group (Shilingqing granules 26 g/kg+SIRT3
inhibitor 25 mg/kg), with 10 rats in each group. Except for blank group, other groups were given 1% ethylene glycol solution
instead of drinking water, and intragastrical administration of 2% ammonium chloride solution 2 mL, for 4 consecutive weeks, to
induce kidney stones rat model; at the same time, administration groups were given relevant medicine intrgastrically, blank group
and model group were given constant volume of normal saline intrgastrically. The 24 h urine volume, urine pH, urine contents of
Ca and oxalic acid (Ox), serum contents of creatinine (Cr), blood urea nitrogen (BUN) and Ca were all determined; the renal
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histopathology, calcium oxalate crystallization and ultrastructure were observed; the levels of malondialdehyde (MDA), superoxide
dismutase (SOD), reactive oxygen species (ROS) and osteopontin (OPN) in renal tissue of rats were determined; mRNA and
protein expressions of SIRT3, FOXO3a, and SOD2 in renal tissue of rats were determined. RESULTS Compared with blank
group, 24 h urine volume, urine pH, SOD level, mRNA and protein expressions of SIRT3, FOXO3a and SOD2 in renal tissue
were decreased significantly in model group (P<0.05 or P<0.01). The contents of urine Ca and Ox, serum contents of Cr, BUN
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and Ca and the levels of ROS, MDA and OPN in renal tissue were increased significantly (P<0.01). The pathological damage of
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renal tissue was severe, with a large number of diffuse black crystals, thickened glomerular basement membrane, and
mitochondrial edema in podocytes and renal tubular epithelial cells. Compared with model group, the above indexes (except for
serum content of Ca in low-dose group) were significantly reversed in Shilinqing granules groups (P<0.05 or P<0.01);
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pathological renal damage, calcium crystal, mitochondrial
Δ 基金项目 河南省科技发展计划项目(No.182102310059) damage of glomerular podocyte and renal tubular epithelial cell
*第一作者 硕士。研究方向:泌尿系结石临床诊疗与基础研究。 were significantly improved; there was no statistical
电话:0371-66232332。E-mail:904367580@qq.com
significance in the changes of above indexes in SIRT3 inhibitor
# 通信作者 主任医师,教授,硕士生导师。研究方向:泌尿系结石
防治与基础研究。E-mail:1936473056@qq.com group (P>0.05). CONCLUSIONS Shilinqing granules can
· 2858 · China Pharmacy 2022 Vol. 33 No. 23 中国药房 2022年第33卷第23期