蓬子菜总黄酮对人脐静脉内皮细胞氧化损伤的保护作用及其机制  被引量:9

Effects and related mechanism of flavone from Galium verum L on peroxide induced oxidative injuryin human umbilical vein endothelial cells

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作  者:董均明 马英丽[2] 张紫阳[1] 李瑞[1] 朱玉良[1] 马玲[1] 

机构地区:[1]哈尔滨医科大学流行病学教研室,150081 [2]黑龙江中医药大学药学院

出  处:《中华心血管病杂志》2016年第7期610-615,共6页Chinese Journal of Cardiology

基  金:国家自然科学基金(81274034)

摘  要:目的探讨蓬子菜总黄酮(FGVL)对过氧化氢所致人脐静脉内皮细胞氧化损伤的作用及其机制。方法将人脐静脉内皮细胞分为5组,包括对照组(加入1640完全培养基)、损伤组(加入100ixmo]/L过氧化氢培养4h)、FGVL1组(12.5mg/LFGVL培养24h后,加入100Ixmo]/L过氧化氢培养4h)、FGVL2组(25.0mg/LFGVL培养24h后,加入100μmol/L过氧化氢培养4h)和FGVL3组(50.0mg/LFGVL培养24h后,加入100μmo]/L过氧化氢培养4h)。采用硝酸还原酶法检测细胞上清液中的一氧化氮含量,ELISA检测细胞上清液中的6-酮-前列腺素1a(6-keto—PGF1a)、血栓烷素B:(TXB2)、白细胞介素-6和白细胞介素-22的分泌水平,RT—PCR检测细胞中磷脂酰肌醇3-激酶(PBK)、蛋白激酶B(Akt)及内皮型一氧化氮合酶(eNOS)的mRNA表达水平,Westernbolt检测磷酸化Akt(ser473)和磷酸化eNOS(ser)的蛋白表达水平,并观察细胞凋亡情况。结果(1)损伤组细胞上清液中的一氧化氮含量为(34.11±1.78)μmo]/L,低于对照组的(74.81±2.93)μmo]/L(P〈0.05);FGVL2组和FGVL3组细胞上清液中的一氧化氮含量分别为(41.86±2.32)μmol/L和(62.79±1.16)μmol/L,均高于损伤组(P均〈0.05)。(2)损伤组细胞上清液中的6-keto—PGF1a含量为(44.84±3.87)ng/L,低于对照组的(82.38±3.98)ng/L(P〈0.05);FGVL1组、FGVL2组和FGVL3组细胞上清液中的6-keto—PGF1a.含量分别为(52.76±1.78)μg/L、(56.58±1.44)μg/L和(67.78±2.02)ng/L,均高于损伤组(P均〈0.05)。损伤组细胞上清液中的TXB,含量为(43.37±3.96)ng/L,高于对照组的(25.56±1.75)ng/L(P〈0.05);FGVL2组和FGVL3组细胞上清液中的TXB2含量分别为(32.41±1.68)ng/L和(28.23±2.15)ng/L,均低于损伤组(P均〈0.05)。Objective To investigate the effects of flavone from Galium verum L (FGVL) on hydrogen peroxide induced oxidative injury in human umbilical vein endothelial cells (HUVEC), and explore related mechanisms. Methods HUVEC were divided into five groups:control group ( 1640 complete medium), injured group (HUVEC treated with 100 μmol/L hydrogen peroxide for 4 h), FGVL group ( HUVEC treated with 12. 5 mg/L FGVL ( group F1 ) , 25.0 mg/L ( group F2) , 50. 0 mg/L ( group F3 ) for 24 h before hydrogen peroxide). The nitric oxide content was measured by nitric acid reductase method. The 6-keto-Prostacyelin-F1a (6-keto-PGF1a ), thromboxane B2 ( TXB2 ), interleukin ( IL ) -6 and IL-22 were determined by ELISA. mRNA expression of phosphatidylinositol 3-kinase (PI3K) , protein kinase B (Akt) and endothelial nitric oxide synthase (eNOS) was detected by RT-PCR. Protein expression of p-Akt ( ser473 ) and p-eNOS (ser1177) was determined by Western blot. Cell apoptosis was observed with fluorescence microscope after Hoechst33258 staining. Results ( 1 ) The contents of nitric oxide were significantly lower in the injured group than in the control group ( (34. 11 ± 1.78) μmol/L vs. (74. 81 ±2. 93) μmol/L,P 〈 O. 05 ), which was significantly increased in group F2 ( (41.86 ±2. 32) μmol/L) and group F3 ( (62.79 ± 1.16 ) Ixmol/L) compared with injured group ( both P 〈 0.05 ). ( 2 ) The secretion level of 6-keto-PGF1a was significantly lower in the injured group ( (44. 84 ± 3.87 ) ng/L) than in the control group ( (82. 38 ± 3.98) ng/L, P 〈0.05), which was significantly increased in group F1 ( (52. 76 ± 1.78) ng/L) ,FGVL 2 group which was(56. 58 ± 1.44 ) ng/L and FGVL 3 group which was ( 67.78 ± 2.02 ) ng/L than that of injured group( all P 〈 O. 05 ). The secretion level of TXB2 was significantly higher in the injured group ((43.37±3.96) ng/L) than in the control group (

关 键 词:黄酮类 内皮细胞 过氧化氢 信号传导 

分 类 号:R285[医药卫生—中药学]

 

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