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天麻活性成分减轻大鼠神经元氧糖剥夺/复糖复氧损伤的作用
机制 Δ
王 锦 ,夏霜莉 ,杨 媛 ,代 蓉 (1.云南中医药大学中药学院,昆明 650500;2.昆明医科大学第一附属医
1 #
2
1*
1
院临床药学中心,昆明 650032)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)23-2886-05
DOI 10.6039/j.issn.1001-0408.2023.23.12
摘 要 目的 研究天麻活性成分3,4-二羟基苯甲醛(3,4-DD)对大鼠脑微血管内皮细胞(BMECs)-大鼠肾上腺嗜铬细胞PC12共
培养体系氧糖剥夺/复糖复氧(OGD/R)损伤的改善作用机制。方法 采用Transwell小室共培养BMECs与PC12细胞,然后分为对
照组、模型组、丁苯酞组(阳性对照组,0.1 mmol/L)、3,4-DD组(0.1 μmol/L),除对照组外,其余各组共培养体系均复制OGD/R损伤
模型。同时,共培养体系以相应药物或培养基干预 BMECs 24 h,然后检测体系跨膜电阻(TEER)以及 PC12 细胞中乳酸脱氢酶
(LDH)活性、脑源性神经营养因子(BDNF)水平以及TrkB、Plc-γ、Map-2、GAP-43 mRNA表达水平。结果 与对照组比较,模型组
共培养体系TEER以及PC12细胞中LDH活性、BDNF水平均显著降低(P<0.01),PC12细胞中TrkB、Plc-γ、Map-2、GAP-43 mRNA
表达水平均显著升高(P<0.01);与模型组比较,3,4-DD组、丁苯酞组共培养体系TEER以及PC12细胞中LDH活性、BDNF水平和
TrkB、Plc-γ、Map-2、GAP-43 mRNA表达水平均显著升高(P<0.05或P<0.01)。结论 3,4-DD可通过作用于BMECs减轻神经元
OGD/R损伤,其作用机制可能与激活BDNF/TrkB信号通路有关。
关键词 3,4-二羟基苯甲醛;脑微血管内皮细胞;神经元;氧糖剥夺
Mechanism of Gastrodia elata active ingredient reducing oxygen-glucose deprivation/reoxygenation injury
in rat neuron
WANG Jin ,XIA Shuangli ,YANG Yuan ,DAI Rong(1.School of Chinese Materia Medica, Yunnan University
1
2
1
1
of Chinese Medicine, Kunming 650500, China; 2. Dept. of Clinical Pharmacy, First Affiliated Hospital of
Kunming Medical University, Kunming 650032, China)
ABSTRACT OBJECTIVE To study the improvement effect and mechanism of Gastrodia elata active ingredient 3,4-
dihydroxybenzaldehyde (3,4-DD) on oxygen-glucose deprivation/reoxygenation(OGD/R) injury in rat primary brain microvascular
endothelial cells (BMECs)-rat adrenal chromaffin cells PC12 co-culture system. METHODS The co-culture model of BMECs and
PC12 cells was replicated in the Transwell chamber, and divided into control group, model group, butylphthalide group (positive
control group, 0.1 mmol/L) and 3,4-DD group (0.1 μmol/L). OGD/R injury model of the co-culture system was induced in those
groups except for the control group. After preventively intervention in BMECs with relevant medicine or culture medium for 24 h,
cell transendothelial electronic resistance (TEER) value, lactate dehydrogenase (LDH) activity, brain-derived neurotrophic factor
(BDNF) level and mRNA expressions of TrkB, Plc-γ, Map-2, GAP-43 in PC12 cells was detected. RESULTS Compared with the
control group, TEER of the co-culture model, LDH activity and BDNF level of PC12 cells were decreased significantly in the
model group (P<0.01), while mRNA expressions of TrkB, Plc-γ, Map-2 and GAP-43 in PC12 cells were increased significantly
(P<0.01). Compared with the model group, TEER of the co-culture model, LDH activity, BDNF level, and the mRNA
expressions of TrkB, Plc-γ, Map-2 and GAP-43 in PC12 cells were increased significantly in the 3,4-DD group and butylphthalide
group (P<0.05 or P<0.01). CONCLUSIONS 3,4-DD can relieve the damage of neuronal OGD/R by acting on BMECs, the
mechanism of which may be associated with activating the BDNF/TrkB signaling pathway.
KEYWORDS 3,4-dihydroxybenzaldehyde; brain microvascular endothelial cells; neuron; oxygen and glucose deprivation
Δ 基金项目 云南省教育厅科学研究基金项目(No.2023Y0457) 神经血管单元(neurovascular unit,NVU)主要包括
*第一作者 硕士研究生。研究方向:中药药理与应用。E-mail:
神经元、星形胶质细胞、小胶质细胞、脑微血管内皮细胞
281824748@qq.com
(brain microvascular endothelial cells,BMECs)、细胞外
# 通信作者 副教授,硕士生导师。研究方向:中药药理与应用。
E-mail:1647029626@qq.com 基质等,各组成间相互协调,共同维持脑组织内环境的
· 2886 · China Pharmacy 2023 Vol. 34 No. 23 中国药房 2023年第34卷第23期