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β-乳香酸对海马神经元细胞氧糖剥夺损伤的改善作用 Δ
*
王明明 ,王 磊 ,窦 芳,李韦韦,文爱东,王婧雯(空军军医大学第一附属医院药剂科,西安 710032)
#
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2021)11-1319-06
DOI 10.6039/j.issn.1001-0408.2021.11.07
摘 要 目的:研究β-乳香酸对大鼠海马神经元细胞氧糖剥夺损伤的改善作用。方法:将大鼠海马神经元细胞分为正常对照组、
模型组和β-乳香酸低、中、高浓度组(1、10、100 μmol/L),除正常对照组外,其余各组细胞加入相应含药培养基,并进行氧糖剥夺培
养以复制氧糖剥夺损伤模型。采用MTT法检测细胞的存活率,采用化学比色法检测细胞上清液中乳糖脱氢酶(LDH)活性,采用
Hoechst-PI染色法观察细胞形态的变化,采用流式细胞仪检测细胞早期凋亡率,采用Western blot法检测细胞中凋亡相关蛋白[B细
胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白(Bax)、激活型胱天蛋白酶3(cleaved caspase-3)]的表达。结果:与模型组比较,β-乳香酸中、
高浓度组细胞存活率、Bcl-2蛋白表达水平均显著升高(P<0.01),细胞上清液中LDH活性、细胞早期凋亡率和细胞中cleaved cas-
pase-3、Bax蛋白表达水平均显著降低(P<0.05或P<0.01);细胞核致密浓染、碎片状现象明显减少。结论:β-乳香酸可改善大鼠
海马神经元细胞氧糖剥夺损伤,其作用机制可能与下调cleaved caspase-3、Bax蛋白表达,上调Bcl-2蛋白表达有关。
关键词 β-乳香酸;海马神经元细胞;氧糖剥夺;细胞凋亡
Improvement Effects of β-boswellic Acid on Hippocampal Neurons Cells Injury Induced by Oxygen-glucose
Deprivation
WANG Mingming,WANG Lei,DOU Fang,LI Weiwei,WEN Aidong,WANG Jingwen(Dept. of Pharmacy,the
First Affiliated Hospital of Air Force Military Medical University,Xi’an 710032,China)
ABSTRACT OBJECTIVE:To study the improvement effects of β-boswellic acid on hippocampal neurons cells injury of rats
induced by oxygen-glucose deprivation. METHODS:The hippocampal neurons cell of rats were divided into normal control group,
model group and β-boswellic acid low-concentration,medium-concentration and high-concentration groups(1,10,100 μmol/L).
Except for normal control group,other groups were cultured with relevant medium and given oxygen glucose deprivation to induce
oxygen-glucose deprivation induced injury model. MTT assay was adopted to detect cell viability. Chemical colorimetry was used to
detect LDH activity in cell culture supernatant. Hoechst-PI staining was used to detect the morphology change of cells. Flow
cytometry was used to detect early apoptosis rate of cells. The expression of apoptosis-related protein(Bcl-2,Bax and cleaved
caspase-3) were detected by Western blot. RESULTS:Compared with model group,the survival rate of cells and protein
expression of Bcl-2 were increased significantly in β-boswellic acid medium-concentration and high-concentration groups (P<
0.01),while LDH activity,early apoptosis rate,protein expression of cleaved caspase-3 and Bax were all decreased significantly
(P<0.05 or P<0.01). The densely stained nuclei and fragmentation decreased significantly. CONCLUSIONS:β-boswellic acid can
relieve oxygen-glucose deprivation induced injury of hippocampal neurons cells,the mechanism of which may be associated with
down-regulating the protein expression of cleaved caspase-3 and Bax and up-regulating the protein expression of Bcl-2.
KEYWORDS β-boswellic acid;Hippocampal neurons cells;Oxygen-glucose deprivation;Cell apoptosis
脑卒中是引起人类死亡和残疾的第二大病因,具有 组织中对缺血缺氧最敏感的部位之一 [3-4] ,因此,抑制海
高发病率、高病死率、高致残率、高复发率及经济负担重 马神经元细胞凋亡可有效减轻缺血性脑损伤的程度,进
[5]
的特点,严重影响国民健康;其中,80%的患者为缺血性 而防治缺血性脑卒中 。
卒中 。缺血性脑卒中是因大脑动脉血流短暂或持久性 乳香为橄榄科植物乳香树 Boswellia carterii Birdw.
[1]
的闭塞导致脑供血不足或中断,进而诱发一系列级联反 及同属 B. bhaur dajiana Birdw.树皮渗出的树脂,目前已
应,造成缺血区脑组织不可逆的损伤,导致神经功能缺 被欧洲药品管理局列为治疗脑癌水肿的潜在治疗药
[6]
[7]
[2]
陷 。海马组织是中枢神经系统的重要组成部分,是脑 物 ,其中β-乳香酸是其重要的药效物质 。相关研究发
现,β-乳香酸可促进海马神经元的生长和分支;另外,其
Δ 基金项目:国家自然科学基金资助项目(No.81803749)
在大鼠脑组织中的浓度明显高于乳香的其他药效成分,
*主管药师,硕士。研究方向:中药药效物质及药理作用。电话:
具有较高的血脑屏障渗透率 [8-9] 。但β-乳香酸是否对缺
029-84775475。E-mail:wangmm130@163.com
# 通信作者:主管药师,硕士。研究方向:中药药效物质及药理作 血性脑卒中具有治疗作用,尚不明确。
用。电话:029-84775531。E-mail:wanglei1112008@163.com 基于此,本研究以大鼠海马神经元细胞为研究对
中国药房 2021年第32卷第11期 China Pharmacy 2021 Vol. 32 No. 11 ·1319 ·