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·药学研究·
川芎嗪-灯盏乙素苷元孪药对脑缺血再灌注损伤模型大鼠的保护
作用及机制研究
Δ
#
陈莉娜 ,文金兰,张善惠,鲁 俊,赵福会,龙铁梅,董 莉,董永喜(贵州医科大学药学院,贵阳 550025)
*
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)15-1804-05
DOI 10.6039/j.issn.1001-0408.2023.15.03
摘 要 目的 研究川芎嗪-灯盏乙素苷元孪药(TMSC4)对脑缺血再灌注损伤(CIRI)模型大鼠的保护作用及机制。方法 将105
只SD大鼠随机分为假手术组、模型组、灯盏乙素苷元组(0.7 mmol/kg)、川芎嗪组(0.7 mmol/kg)和TMSC4低、中、高剂量组(0.35、
0.7、1.4 mmol/kg),每组15只。假手术组、模型组大鼠灌胃等体积生理盐水,其余各组大鼠灌胃相应药物,每天1次,连续 14 d。除
假手术组外,其余各组大鼠均采用线栓法建立CIRI模型。大鼠缺血2 h再灌注22 h后,测定大鼠脑指数及脑含水量;检测大鼠血
清中白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)的水平,脑组织中超氧化物歧化酶(SOD)、丙二醛(MDA)、 谷胱甘肽过
氧化氢酶(GSH-Px)、过氧化氢酶(CAT)的水平和大脑皮层神经细胞的凋亡情况以及 B 细胞淋巴瘤 2(Bcl-2)、Bcl-2 相关 X 蛋白
(Bax)、活化型胱天蛋白酶3(cleaved-caspase-3)蛋白表达水平。结果 与假手术组比较,模型组大鼠脑指数和脑含水量,血清中IL-
1β、IL-6、TNF-α水平以及脑组织中MDA水平,神经细胞凋亡率,Bax、cleaved-caspase-3蛋白表达水平均显著升高(P<0.05);脑组
织中SOD、 GSH-Px、CAT水平和Bcl-2蛋白表达水平均显著降低(P<0.05)。与模型组比较,各给药组大鼠上述指标水平均显著逆
转(P<0.05),且TMSC4中、高剂量组的逆转作用显著优于灯盏乙素苷元组和川芎嗪组(P<0.05)。结论 TMSC4对CIRI模型大
鼠具有保护作用,其作用机制可能与减轻炎症反应、氧化应激损伤,抑制神经细胞凋亡有关。
关键词 川芎嗪;灯盏乙素苷元;孪药;脑缺血再灌注损伤;神经保护;大鼠
Study on protective effects of twin drugs of tetramethylpyrazine-scutellarein on cerebral ischemia-
reperfusion injury model rats and its mechanism
CHEN Lina,WEN Jinlan,ZHANG Shanhui,LU Jun,ZHAO Fuhui,LONG Tiemei,DONG Li,DONG Yongxi
(School of Pharmacy, Guizhou Medical University, Guiyang 550025, China)
ABSTRACT OBJECTIVE To study the protective effects of twin drugs of tetramethylpyrazine-scutellarein (TMSC4) on cerebral
ischemia-reperfusion injury (CIRI) model rats and its mechanism. METHODS One hundred and five SD rats were randomly
divided into sham operation group, model group, scutellarein group (0.7 mmol/kg), tetramethylpyrazine group (0.7 mmol/kg),
and TMSC4 low-dose, medium-dose and high-dose groups (0.35, 0.7, 1.4 mmol/kg), with 15 rats in each group. Sham operation
group and model group were given constant volume of normal saline intragastrically, and other groups were given relevant drug
intragastrically, once a day, for consecutive 14 d. Except for sham operation group, all other groups were treated to establish the
CIRI model using the thread occlusion method. After 2 hours of ischemia and 22 hours of reperfusion, the brain index and brain
water content of the rats were measured. Serum levels of interleukin 1β (IL-1β), IL-6 and tumor necrosis factor α (TNF-α), the
levels of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-Px) and catalase (CAT) in brain
tissues, the situation of neuronal cell apoptosis, and the protein expressions of B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X
protein (Bax) and cleaved-caspase-3 were evaluated. RESULTS Compared with sham operation group, the brain index, brain
water content, the serum levels of IL-1β, IL-6 and TNF-α, the levels of MDA in brain tissues, the brain cell apoptosis and the
protein expressions of Bax and cleaved-caspase-3 in model group were significantly increased (P<0.05); the levels of SOD, GSH-
Px and CAT and the protein expression of Bcl-2 in brain tissues were significantly decreased (P<0.05). Compared with model
group, the above indexes of rats were reversed significantly in administration groups (P<0.05), while the reverse effects of
TMSC4 medium-dose and high-dose groups were significantly
better than those of scutellarein group and tetramethylpyrazine
Δ 基金项目 国家自然科学基金资助项目(No.81960630);贵州省
group (P<0.05). CONCLUSIONS TMSC4 has a certain
卫生健康委员会科学技术基金项目(No.gzwkj2021-448);贵州省普通
protective effect in CIRI model rats, the mechanism of which
高等学校青年科技人才成长项目(No.黔教合KY字〔2021〕164)
*第一作者 硕士研究生。研究方向:先导化合物结构优化及生物 may be related to relieving inflammatory reaction and
活性。电话:0851-88416153。E-mail:2693189089@qq.com oxidative stress, inhibiting cell apoptosis.
# 通信作者 副教授,硕士生导师,博士。研究方向:天然活性产物 KEYWORDS tetramethylpyrazine; scutellarein; twin drugs;
结构修饰。电话:0851-88416153。E-mail:dongyx01@163.com cerebral ischemia-reperfusion injury; neuroprotective effect; rat
· 1804 · China Pharmacy 2023 Vol. 34 No. 15 中国药房 2023年第34卷第15期