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作 者:张志斌[1] 陆曙[1] 周春刚[1] 王书乐[1] 李萍[1]
机构地区:[1]无锡市中医医院,无锡市中医药研究所心血管病实验室,江苏无锡214001
出 处:《中国实验方剂学杂志》2013年第3期215-218,共4页Chinese Journal of Experimental Traditional Medical Formulae
基 金:江苏省中医药科技项目(LZ09099)
摘 要:目的:研究当归补血汤对动脉血管内皮细胞凋亡的影响,探讨其可能作用机制。方法:当归补血汤提取液作用于血管紧张素Ⅱ(AngⅡ)诱导的大鼠动脉内皮细胞(RAOEC)凋亡模型(细胞密度1×105/mL)24 h,检测RAOEC凋亡率和半胱氨酸蛋白酶-8(caspase-8),Bcl-2相关x蛋白(Bax),B细胞淋巴瘤/白血病-2(Bcl-2)mRNA的表达。结果:浓度为500 mg.L-1的当归补血汤作用于AngⅡ诱导的RAOEC凋亡细胞后,凋亡率为(8.69±0.69)%,与对照组(14.45±1.87)%相比,凋亡率明显下降,且差异有统计学意义(P<0.05);当归补血汤组RAOECs的caspase-8,Bax mRNA水平,Bax mRNA/Bcl-2 mRNA分别为0.603±0.081,0.629±0.079,0.566±0.113,均明显低于对照组(1.083±0.115,1.024±0.072,1.018±0.111),且差异具有统计学意义(均为P<0.05)。结论:当归补血汤具有抗动脉血管内皮细胞凋亡的作用;当归补血汤可能通过下调caspase-8和Bax基因表达分别从死亡受体通路和线粒体通路抑制RAOEC凋亡。Objective : To study cells (RAOECs) and its mechanism. effect of Danggui Buxue decoction on apoptosis of rat arterial endothelial Method: Extracts of Danggui Buxue decoction was incubated with angiotensinll-induced apoptotic RAOECs (1 ×10^5/mL) for 24 hours, apoptosis rate and mRNA level of caspase-8, B cell lymphoma/leukmia-2 Bcl-2 and Bcl-2 assaciated x protein (Bax) were detected. Result: Apoptosis rate in 500 mgL-1 Danggui Buxue decoction group was (8.69 ±0.69)% , which significantly lower than that in control group (14.45 ± 1.87)% (P 〈0.05); while mRNA level of caspase-8, Bax and Bcl-2 of Danggui Buxue decoction group (0. 603±0. 081, 0. 629 ±0. 079, 0. 566 ±0. 113, respectively) were all significantly lower than that in control group (1.083 ±0.115, 1.024 ±0.072, 1.018 ±0.111, respectively), (all P 〈0.05). Conclusion: Danggui Buxue decoction has effects on apoptosis of RAOECs. Danggui Buxue decoction may inhibit RAOECs apoptosis by down-regulating caspase-8 mRNA expression and mitochondrial signaling pathway by down- regulating Bax mRNA expression respectively.
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