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1.广州中医药大学 中药学院,广州 510006
2.广州中医药大学 基础医学院,广州 510006
[第一作者] 林逸科,在读硕士,从事心血管药理研究,E-mail:linyike9527@163.com
*陈扬,博士,研究员,从事心血管药理研究,E-mail:ychen8@gzucm.edu.cn
收稿日期:2019-05-15,
网络出版日期:2019-09-06,
纸质出版日期:2020-01-05
移动端阅览
林逸科, 谢银燕, 骆林喆, 等. 三黄泻心汤抑制危险脂肪因子7-keto诱导血管内皮NLRP3活化引起的功能紊乱的机制分析[J]. 中国实验方剂学杂志, 2020,26(1):31-36.
Yi-ke LIN, Yin-yan XIE, Lin-zhe LUO, et al. Effect of Sanhuang Xiexintang in Inhibiting 7-Ketocholesterol-induced Endothelial Disfunctional by NIRP3 Inflammasome Pathway[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(1): 31-36.
林逸科, 谢银燕, 骆林喆, 等. 三黄泻心汤抑制危险脂肪因子7-keto诱导血管内皮NLRP3活化引起的功能紊乱的机制分析[J]. 中国实验方剂学杂志, 2020,26(1):31-36. DOI: 10.13422/j.cnki.syfjx.20192401.
Yi-ke LIN, Yin-yan XIE, Lin-zhe LUO, et al. Effect of Sanhuang Xiexintang in Inhibiting 7-Ketocholesterol-induced Endothelial Disfunctional by NIRP3 Inflammasome Pathway[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(1): 31-36. DOI: 10.13422/j.cnki.syfjx.20192401.
目的:
2
研究三黄泻心汤(SHXXT)能否通过抑制7-酮基胆固醇(7-keto)诱导的血管内皮细胞NOD样受体蛋白3(NLRP3)活化恢复内皮功能。
方法:
2
培养小鼠主动脉血管环组织,实验组分为正常组,模型7-keto组,三黄泻心汤含药血清1%,2%,5%不同浓度给药组,观察小鼠血管舒张功能;培养微血管内皮细胞,按照上述实验分组,另设置NLRP3抑制剂异甘草素(ISO),通过蛋白免疫印迹法(Western blot)检测内皮一氧化氮合酶(eNOS),NLRP3,含半胱氨酸的天冬氨酸蛋白水解酶-1(Caspase-1),白细胞介素-1
β
(IL-1
β
)蛋白表达量的变化,除此之外,利用一氧化氮(NO)定量试剂盒检测NO的浓度。
结果:
2
与正常组比较,模型组显著降低血管环内皮依赖性舒张功能(
P
<
0.01),给药组明显恢复内皮依赖性血管舒张功能,且成浓度依赖性(
P
<
0.05,
P
<
0.01);同时研究显示,与正常组比较,模型组微血管内皮细胞eNOS蛋白表达明显降低(
P
<
0.05),NLRP3,Caspase-1,IL-1
β
蛋白表达明显升高(
P
<
0.05,
P
<
0.01),NO浓度显著降低(
P
<
0.01);与模型组比较,给予三黄泻心汤血清治疗后,明显升高eNOS蛋白表达和NO浓度,明显降低NLRP3,Caspase-1,IL-1
β
蛋白表达(
P
<
0.05,
P
<
0.01)。
结论:
2
三黄泻心汤能改善7-keto引起的内皮依赖性血管功能损伤,且是通过抑制内皮NLRP3炎症小体活化介导的NO信号通路实现的。
Objective:
2
To study whether Sanhuang Xiexintang (SHXXT) can restore endothelial function by inhibiting the activation of NOD-like receptor protein 3 (NIRP3) induced by 7-ketocholesterol (7-keto) in vascular endothelial cells.
Method:
2
The aortic rings of mice were cultured in normal group
model (7-keto) group
SHXXT groups (1%
2% and 5% drug-containing serum). Vasodilation function of mice was observed. Microvascular endothelial cells were cultured according to the above experimental groups
and NIRP3 inhibitor isoglycyrrhizin (ISO) group
was also set. Western blot was used to detect the expressions of endothelial nitric oxide synthase (eNOS)
NIRP3
cysteinyl aspartate specific proteinase-1 (Caspase-1)
interleukin-1
β
(IL-1
β
) protein. In addition
nitric oxide (NO) quantitative kit was used to detect the concentration of NO.
Result:
2
Compared with the normal group
the endothelium-dependent vasodilation function of vascular rings was significantly reduced in model group (
P
<
0.01)
and the drug group significantly restored the endothelium-dependent vasodilation function in a concentration-dependent manner (
P
<
0.05
P
<
0.01). Meanwhile
microvascular endothelial cells were also studied. Compared with the normal group
the content of eNOS protein in the model group decreased (
P
<
0.05)
while the concentration of NO decreased significantly (
P
<
0.01). After treatment with SHXXT serum
eNOS and NO could be restored
with significant differences in the concentration of NO with 5% (
P
<
0.05) and 10% (
P
<
0.01) SHXXT serum. At the same time
the expressions of NIRP3 (
P
<
0.05)
cle-Caspase-1 activation (
P
<
0.01) and IL-1
β
production (
P
<
0.01) in endothelium were significantly increased under 7-keto stimulation
and the SHXXT serum could significantly inhibit the expression and activation of relevant proteins. Subsequently
endothelial cells were treated with NIRP3 inhibitor ISO. Compared with the model group
eNOS expression increased
and NO concentration increased significantly (
P
<
0.01) after treatment with ISO
but ISO had no synergistic effect on SHXXT serum.
Conclusion:
2
SHXXT can improve endothelium-dependent vascular dysfunction induced by 7-keto
which is achieved by NO signaling pathway mediated by inhibiting the activation of endothelial NIRP3-related proteins.
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