芪丹通脉片调节TLR4信号通路抑制巨噬细胞泡沫化的研究

目的 观察益气活血中药芪丹通脉片对氧化低密度脂蛋白(ox-LDL)诱导的RAW264.7细胞泡沫化进程、炎症指标及Toll样受体（TLR）4信号通路的影响。 方法 培养RAW264.7细胞，随机分为对照组、ox-LDL组及ox-LDL +芪丹通脉片（QDTM）组，各组细胞干预后进行泡沫化诱导，分析各组细胞油红染色阳性面积，计算各组细胞泡沫化诱导率，收集细胞，ELISA法检测炎性因子肿瘤坏死因子(TNF)-α、白介素（IL）-6、C反应蛋白（CRP）表达水平，Real-time PCR及Western blot分析TLR4、分子核因子（NF）-κB表达水平。 结果 与对照组相比，ox-LDL组细胞泡沫化诱导率、TNF-α、IL-6、CRP水平显著升高（P < 0.05），TLR4、NF-κB表达水平明显上调，QDTM干预后，ox-LDL+QDTM组细胞泡沫化诱导率及TNF-α、IL-6、CRP水平较ox-LDL组显著下调（P < 0.05），同时TLR4、NF-κB表达水平较ox-LDL组明显下降。 结论 QDTM能抑制TLR4信号通路及炎症反应、降低RAW264.7细胞泡沫化诱导率，抑制巨噬细胞泡沫化。     

IκBβ attenuates angiotensin II-induced cardiovascular inflammation and fibrosis in mice

The development of cardiovascular fibrosis is associated with chronic inflammation, where activation of nuclear factor κB (NF-κB) signaling may play a critical role. NF-κB activation is tightly regulated by the cellular inhibitor of κB (IκB) family of proteins, such as IκBα and IκBβ. IκBα and IκBβ display different regulation kinetics in response to inflammatory stimulation. The present study tested the hypothesis that IκBα and IκBβ may have different roles in modulating cardiovascular inflammation and fibrosis, using a model of angiotensin II infusion-induced hypertension in wild-type mice and IκBβ knock-in mice, in which the IκBα gene is replaced by IκBβ cDNA (AKBI). In WT mice, subcutaneous angiotensin II infusion for 7 days induced increased perivascular and interstitial collagen deposition and fibrotic lesions, associated with myocardial interstitial hemosiderin accumulation and extensive macrophage infiltration. These effects of angiotensin II were dramatically limited in AKBI mice. Replacement of IκBα with IκBβ significantly attenuated angiotensin II infusion-induced expression of interleukin 1β, interleukin 6, monocyte chemotactic protein 1, collagen I and III, fibronectin, and tissue inhibitor of metalloproteinase 1 in the hearts. Furthermore, using cultured vascular smooth muscle cells, we demonstrated that interleukin 1β-induced NF-κB activation and monocyte chemotactic protein 1, vascular cell adhesion molecule 1, and tissue inhibitor of metalloproteinase 1 expressions were suppressed in the AKBI cells because of the replacement of IκBα with IκBβ. These results indicate that NF-κB has an essential role in mediating the cardiovascular inflammatory response to angiotensin II and suggest that targeting the balance of IκBα and IκBβ expression might be a novel therapeutic modality in preventing fibrosis in hypertensive cardiovascular disease.     

阿托伐他汀对大鼠血管平滑肌细胞迁移和组织蛋白酶S表达的影响

目的 观察阿托伐他汀对白细胞介素1β诱导的大鼠血管平滑肌细胞迁移及组织蛋白酶S和核因子κB表达的影响.方法 取SD大鼠胸主动脉进行血管平滑肌细胞培养,采用Boyden小室实验评价不同浓度阿托伐他汀对白细胞介素1β诱导大鼠血管平滑肌细胞迁移的影响,用细胞免疫化学和逆转录聚合酶链反应法检测各组组织蛋白酶S和核因子κB表达的变化.结果 与正常对照组相比,白细胞介素1β组血管平滑肌细胞迁移增多,核因子κB和组织蛋白酶s表达明显增加(P<0.01).1 μmol/L和10 μmol/L阿托伐他汀组可呈剂量依赖性地抑制白细胞介素1β所致的细胞迁移以及组织蛋白酶S和核因子κB表达(P<0.01).结论 阿托伐他汀可能通过抑制核因子κB使组织蛋白酶S表达减少,从而抑制血管平滑肌细胞迁移.     

破裂颅内动脉瘤患者动脉瘤壁AIF-1、MMP-9和COX-2表达上调

目的 探讨同种异体移植物炎症因子-1(allograft inflammatory factor-1,AIF-1)、基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)和环加氧酶-2(cycloxygenase-2,COX-2)在颅内破裂动脉瘤组织中的表达及意义.方法 收集12例颅内破裂囊状动脉瘤瘤体和颞浅动脉标本,采用免疫组织化学染色法检测动脉瘤和颞浅动脉AIF-1、MMP-9和COX-2表达.结果 动脉瘤瘤壁可见淋巴细胞、巨噬细胞等炎性细胞浸润.AIF-1、MMp-9和COX-2表达主要见于破裂动脉瘤瘤壁组织的内膜层和中膜层,并且主要分布于巨噬细胞和淋巴细胞的细胞质内,而在颞浅动脉不表达或极少量表达.半定量分析显示,动脉瘤瘤壁AIF-1破裂IAAIF-1[0.006 7(0.004 2 ～0.014 6)对0.0000(0.0000～0.0010);Z=-4.236,P＜ 0.001]、MMP-9[0.002 2 (0.000 7～0.004 3)对0.000 0 (0.000 0 ～0.000 0);Z=-4.442,P＜0.001]和COX-2[0.002 8(0.002 2 ～ 0.004 3)对0.000 0(0.0000～0.000 0);Z=-4.442,P＜0.001]表达水平均显著高于颞浅动脉组.男性患者破裂动脉瘤瘤壁AIF-1表达水平显著高于女性患者(0.016±0.013对0.009±0.006;t=1.440,P=0.043).结论 颅内破裂囊状动脉瘤瘤壁AIF-1、MMP-9和COX-2表达显著上调,提示存在炎性反应,并可能参与了颅内动脉瘤发生、发展和破裂过程.     

AIF-1 is an actin-polymerizing and Rac1-activating protein that promotes vascular smooth muscle cell migration

Development of vascular restenosis is a multifaceted process characterized by migration and proliferation of vascular smooth muscle cells (VSMCs), resulting in loss of lumen diameter. Characterization of proteins that mediate this process is essential in our understanding of the pathogenesis of arterial injury. Allograft inflammatory factor-1 (AIF-1) is a cytoplasmic, calcium-binding protein that is expressed in VSMCs by allograft and balloon angioplasty injury. AIF-1 is not present in cultured human VSMCs but is induced by cytokines, and overexpression of AIF-1 results in increased VSMC growth and cell-cycle gene expression. To characterize AIF-1 modulatory effects in primary human VSMCs, AIF-1-interacting proteins were identified by an AIF-1/glutathione S transferase fusion protein affinity assay. MALDI-TOF mass spectrophotometric amino analysis identified actin as an AIF-1 interacting protein. This interaction was verified by coimmunoprecipitation. This is a functional interaction, because AIF-1 binds to and polymerizes F-actin in vitro. In unstimulated VSMCs, AIF-1 colocalizes with F-actin but translocates to lamellipodia on stimulation with platelet-derived growth factor. VSMCs stably transduced with AIF-1 retrovirus migrate 2.6-fold more rapidly (85.1+/-2.9 versus 225.5+/-16.6; P<0.001) in response to platelet-derived growth factor versus control cells. AIF-1 colocalizes with Rac1, and AIF-1-transduced VSMCs show a constitutive and enhanced activation of Rac1, providing a mechanism for the increased migration. These data indicate that AIF-1 binds and polymerizes F actin and also regulates Rac1 activity and VSMC migration. Considering the AIF-1 expression pattern in injured arteries, this suggests that AIF-1 may be involved in the cytoskeletal signaling network leading to vascular remodeling.     

B-cell activating factor and v-Myc myelocytomatosis viral oncogene homolog (c-Myc) influence progression of chronic lymphocytic leukemia

Mice bearing a v-Myc myelocytomatosis viral oncogene homolog (c-Myc) transgene controlled by an Ig-alpha heavy-chain enhancer (iMyc(Cα) mice) rarely develop lymphomas but instead have increased rates of memory B-cell turnover and impaired antibody responses to antigen. We found that male progeny of iMyc(Cα) mice mated with mice transgenic (Tg) for CD257 (B-cell activating factor, BAFF) developed CD5(+) B-cell leukemia resembling human chronic lymphocytic leukemia (CLL), which also displays a male gender bias. Surprisingly, leukemic cells of Myc/Baff Tg mice expressed higher levels of c-Myc than did B cells of iMyc(Cα) mice. We found that CLL cells of many patients with progressive disease also expressed high amounts of c-MYC, particularly CLL cells whose survival depends on nurse-like cells (NLC), which express high-levels of BAFF. We find that BAFF could enhance CLL-cell expression of c-MYC via activation the canonical IκB kinase (IKK)/NF-κB pathway. Inhibition of the IKK/NF-κB pathway in mouse or human leukemia cells blocked the capacity of BAFF to induce c-MYC or promote leukemia-cell survival and significantly impaired disease progression in Myc/Baff Tg mice. This study reveals an important relationship between BAFF and c-MYC in CLL which may affect disease development and progression, and suggests that inhibitors of the canonical NF-κB pathway may be effective in treatment of patients with this disease.     

Induction of matrix metalloproteinase-2 and -9 via Erk1/2-NF-κB pathway in human astroglia infected with Toxoplasma gondii

Matrix metalloproteinase (MMP)-2 and MMP-9 can cleave fibronectin, allowing leukocyte migration to the site of Toxoplasma gondii infection during toxoplasmic encephalitis. The aim of this study was to investigate the association between extracellular signal-regulated kinase (Erk)1/2-nuclear factor (NF)-κB pathway and MMP-2/-9 expression in astroglia infected with T. gondii tachyzoite in vitro. Our results showed that phosphorylated (p)-Erk1/2 transiently increased 1 h post-infection (PI) and p-NF-κB significantly increased from 1 h PI to 12 h PI in cell homogenates. NF-κB was bound directly to oligonucleotides containing putative NF-κB binding sites for the MMP-9 promoter. Additionally, expression of p-NF-κB, MMP-2, and MMP-9 was significantly decreased by MG132, an indirect NF-κB inhibitor. Treatment with PD98059, an Erk kinase inhibitor, efficiently reduced p-Erk1/2, p-NF-κB, MMP-2, and MMP-9 expression. These results suggest that suppression of the Erk1/2-NF-κB signaling pathway causes reductions in MMP-2 and MMP-9 activities in astroglia response to T. gondii infection. Thus, inhibiting this signaling intermediate involved in MMP-2 and MMP-9 expression may be a potential method for controlling inflammatory development of T. gondii-induced encephalitis.     

抑制核转录因子-κB对单核细胞基质金属蛋白酶9表达的影响

目的观察NF-κB抑制剂咖啡酸苯乙酯(CAPE)对溶血磷脂酸(LPA)诱导人单核细胞(THP-1)基质金属蛋白酶9(MMP-9)表达和活性及NF-κB p65表达的影响。方法选用THP-1培养后,分对照组(不加LPA),加0.1、0.5、1、5和10μmol/L LPA依次为1组、2组、3组、4组和5组,刺激THP-1细胞4 h;另选CAPE 20 mg/L预处理1 h,再LPA 1μmol/L处理4 h后为CAPE组,ELISA法测定MMP-9含量,酶谱法检测MMP-9活性,蛋白印迹法检测核蛋白NF-κB p65表达变化。结果与对照组和1组、2组、4组、5组比较,3组MMP-9分泌和活性以及NF-κB p65均显著增加,差异有统计学意义(P0.01);与3组比较,CAPE组明显抑制上述指标(P0.01)。结论 LPA可能通过激活NF-κB,促进MMP-9表达,并增强其活性,而CAPE抑制MMP-9表达。     

NF-κB在氧化型低密度脂蛋白引起人脐静脉内皮细胞表达CD40中的作用

目的研究氧化低密度脂蛋白(ox-LDL)对人脐静脉内皮细胞表达分化抗原CD40中核因子κB(NF-κB)的作用,进一步探讨卡托普利可能的抗动脉硬化作用。方法在ox-LDL作用人脐静脉内皮细胞前预先用卡托普利、NF-κB阻断剂(PDTC)、卡托普利+一氧化氮合酶阻断剂(L-NAME)、卡托普利+PDTC作用后,应用流式细胞技术检测细胞表面CD40的表达。结果预先加入卡托普利、PDTC人脐静脉内皮细胞的CD40的表达低于ox-LDL组(P<0.05),卡托普利组内皮细胞CD40的表达值低于卡托普利+PDTC组和卡托普利+NAME组,组间相比差异显著(P<0.001)。结论ox-LDL通过NF-κB途径激活了CD40的表达,卡托普利通过一氧化氮(NO)途径及NF-κB的转录使ox-LDL引起的内皮细胞CD40的表达下降,从而具有抗动脉硬化作用。     

p300/CBP相关因子对大鼠血管平滑肌细胞迁移的影响及机制研究

目的探讨p300/CBP相关因子(PCAF)对大鼠血管平滑肌细胞(VSMC)迁移的作用及机制。方法组织块贴壁法获取大鼠原代VSMC,使用Ad-PCAF RNAi腺病毒转染VSMC以下调PCAF表达。选择1μg/ml的脂多糖作为VSMC迁移诱导剂。将实验分为4组:不添加脂多糖(对照组)、1μg/ml脂多糖刺激(A组)、Ad-绿色荧光蛋白(GFP)腺病毒转染+1μg/ml脂多糖刺激(B组)、Ad-PCAF RNAi腺病毒转染+1μg/ml脂多糖刺激(C组)。采用Transwell实验检测细胞迁移水平。免疫荧光染色实验检测VSMC中NF-κB p65的核转位情况。Western blot检测PCAF、NF-κB p65、磷酸化NF-κB p65蛋白表达水平。结果 Western blot结果显示,与对照组比较,A组和B组PCAF和磷酸化NF-κB p65蛋白表达明显升高,差异有统计学意义(P<0.05);与B组比较,C组PCAF和磷酸化NF-κB p65蛋白表达明显降低,差异有统计学意义(P<0.05)。Transwell实验结果显示,与对照组比较,A组和B组穿出小室细胞数明显增多,差异有统计学意义[(766.30±40.86)个/视野、(794.00±76.36)个/视野vs (202.70±22.59)个/视野,P<0.05];与B组比较,C组穿出小室细胞数明显减少,差异有统计学意义[(337.00±82.95)个/视野vs (794.00±76.36)个/视野,P<0.05]。免疫荧光染色实验结果显示,与对照组比较,A组和B组细胞核内NF-κB p65蛋白表达明显升高,差异有统计学意义(P<0.05)。与B组比较,C组细胞核内NF-κB p65蛋白表达明显降低,差异有统计学意义(P<0.05)。结论下调PCAF的表达可明显抑制VSMC迁移,其机制可能与下调PCAF后抑制NF-κB信号通路介导的炎性反应有关。     

Cyanidin-3-O-glucoside Induces Apoptosis and Inhibits Migration of Tumor Necrosis Factor-α-Treated Rat Aortic Smooth Muscle Cells

Blueberries are rich in anthocyanins (ACNs), which have recently been noted to protect against atherosclerosis development in mice. Cyanidin-3-O-glucoside (C3G), a member of blueberry ACN family, can inhibit the tumor necrosis factor-α (TNF-α)-induced proliferation of vascular smooth muscle cells (VSMCs). However, the effects of C3G on VSMC apoptosis and migration remain unclear. This study was thus conducted to examine whether and how C3G affected the apoptosis and migration of rat aortic smooth muscle cells (RASMCs) challenged by TNF-α. Primary cultured RASMCs were pretreated with C3G (25, 50 or 100 μM) for 2 h and then stimulated with TNF-α (10 ng/ml) for additional 24 h. Our results illustrated that C3G pretreatment induced significant apoptosis in TNF-α-stimulated RASMCs in a dose-dependent way, which was accompanied with increased cleaved caspase-3, caspase-9 and Bax and decreased Bcl-2. Moreover, RASMC migration was enhanced by TNF-α, but markedly suppressed by C3G pretreatment. The expressions and activities of matrix metalloproteinase-2 (MMP-2) and MMP-9 were inhibited by C3G. In addition, TNF-α-enhanced nuclear translocation of nuclear factor kappa B (NF-κB) subunit p65 and phosphorylation of NF-κB inhibitor α (IκBα) in RASMCs were attenuated by C3G. In summary, our study reveals that C3G can induce significant apoptosis in TNF-α-treated RASMCs and markedly inhibit their migration.     

Ox-LDL诱导血管平滑肌细胞胸腺基质淋巴细胞生成素表达

目的:观察氧化低密度脂蛋白(ox-LDL)是否可以诱导血管平滑肌细胞(VSMCs)表达胸腺基质淋巴细胞生成素(TSLP),并探讨核因子-κB(NF-κB)信号通路在其中的作用。方法:原代培养VSMCs,分别用ox-LDL及ox-LDL联合NF-κB特异性抑制剂——吡咯烷二硫代氨基甲酸盐(PDTC)干预。采用免疫组织化学染色检测胞质中TSLP的表达,用ELISA法检测细胞培养上清液中TSLP的浓度,用电泳迁移率实验检测NF-κB的结合活性。结果:正常未经ox-LDL刺激的VSMCs几乎不表达TSLP,经ox-LDL刺激后胞质及上清液中的TSLP表达明显增加,并有浓度和时间依赖性。Ox-LDL刺激VSMCs表达TSLP的同时NF-κB信号通路激活,经PDTC预处理后TSLP表达量显著减少。结论:Ox-LDL能够诱导VSMCs表达TSLP,其作用机制可能为上调NF-κB的结合活性。     

E1A激活基因阻遏子在动脉粥样硬化血管中的表达及其与炎症因子的关系

目的 探讨E1A激活基因阻遏子(CREG)在动脉粥样硬化(AS)血管中的表达及其与炎症因子的关系。方法 Apo E(-/-)小鼠6周龄断奶后给予高脂喂养。8周后取主动脉血管,采用HE染色观察血管的形态学变化;采用免疫荧光染色观察CREG、SMα-actin和巨噬细胞标志物Mac-3的表达变化。取高脂喂养的1~8周小鼠血管,采用Western blot方法检测AS血管中CREG及核转录因子(NF)-κB的表达的变化。结果 在Apo E(-/-)小鼠高脂喂养8周,主动脉血管AS斑块明显形成,斑块内有胆固醇结晶,斑块凸凹不平,管腔明显狭窄。免疫荧光显示AS血管中,CREG表达明显下降,同时SMα-actin表达也下降,而Mac-3表达增高。Apo E(-/-)小鼠高脂喂养2~8周,取动脉血管行蛋白定量分析,结果显示高脂喂养2周时,CREG在动脉血管中的表达不是降低,而是明显升高,高脂喂养第4周,CREG表达急剧下降,而后又逐渐上升,但不能升至正常水平。同时NF-κB随着时间的推移,表达逐渐升高。结论 在AS进程中,血管中膜的VSMCs由收缩表型向合成表型转化,细胞增生活跃、分化减弱,CREG作为维持VSMCs分化的蛋白,在血管中的表达与AS进展密切相关,同时伴随着炎症因子表达逐渐升高。     

高糖通过激活人脐静脉内皮细胞ⅠκB-α/NF-κB途径诱导MCP-1的表达

目的观察高糖诱导人脐静脉内皮细胞NF-κB的活性和单核细胞趋化蛋白1（MCP-1）的表达,探讨糖尿病并发动脉粥样硬化的发病机制。方法在培养的人脐静脉内皮细胞中加入不同浓度葡萄糖,检测内皮细胞中MCP-1mRNA、MCP-1蛋白的表达,NF-κB的活性及IκB-α的磷酸化水平。结果高糖明显地诱导了血管内皮细胞NF-κB的活性、MCP-1的表达及IκB-α的磷酸化;NF-κB活性抑制剂明显地降低了高糖所诱导的MCP-1的表达。结论高糖通过诱导血管内皮细胞IκB-α的磷酸化激活NF-κB,从而诱导了MCP-1的表达。提示在糖尿病并发动脉粥样硬化的发病过程中,高血糖通过激活血管内皮细胞IκB-α/NF-κB途径诱导MCP-1的表达,进而发挥了重要的作用。     

Differential response of vascular smooth muscle cells to oxidized LDL in mouse strains with different atherosclerosis susceptibility

Oxidized low-density lipoprotein (LDL) has numerous atherogenic properties, including induction of inflammatory genes, and vascular smooth muscle cells (VSMC) are involved in the development of atherosclerosis. In this study, we examined whether variations of VSMC in the capacity to oxidize LDL or in response to minimally modified LDL (MM-LDL) constitute a genetic component in atherosclerosis. VSMC were isolated from the aorta of two inbred mouse strains C57BL/6J (B6) and C3H, which differ markedly in susceptibility to atherosclerosis. LDL oxidation was assessed by measuring thiobarbituric acid-reactive substance (TBARS) production. Responses to MM-LDL were evaluated by examining the expression of inflammatory genes involved atherosclerosis, including monocyte chemotactic protein-1 (MCP-1) and vascular cell adhesion molecule-1 (VCAM-1), and an oxidant stress gene, heme oxygenase-1 (HO-1). VSMC from the two strains exhibited a comparable ability to transform native LDL to oxidized LDL, whereas their response to MM-LDL differed markedly. MM-LDL resulted in dramatic induction of MCP-1, VCAM-1, and HO-1 mRNAs in the cells from B6 mice but exerted little effect in cells from C3H mice. MCP-1 and soluble VCAM-1 protein levels in conditioned media were measured by ELISA. B6 cells produced significantly more MCP-1 and VCAM-1 proteins in response to MM-LDL than C3H cells. These data suggest that variation in the response of VSMC to oxidized LDL may contribute to the difference between B6 and C3H mice in atherosclerosis susceptibility.     

绞股蓝皂苷对脂多糖诱导的小胶质细胞炎性反应的影响

目的：探讨绞股蓝皂苷(gypenoside, GP)对脂多糖(lipopolysaccharide, LPS)诱导的小胶质细胞炎性反应的影响。方法对小鼠 BV-2小胶质细胞系进行体外培养。将细胞分为正常对照组、LPS 组(LPS 10 ng/ml )、GP + LPS 组(LPS 10 ng/ml,GP 20μg/ml)和 GP 组(GP 20μg/ml),培养24 h后采用酶联免疫吸附法检测肿瘤坏死因子-α( tumor necrosis factor-α, TNF-α)、白细胞介素(interleukin, IL)-1β和 IL-6含量,采用免疫细胞化学染色和蛋白质印迹分析检测小胶质细胞核因子(nuclear factor, NF)-κB 和细胞因子信号传导抑制蛋白1(suppressor of cytokine signaling 1, SOCS-1)表达水平。结果 LPS 组 TNF-α、IL-1β和 IL-6释放以及 NF-κB 蛋白表达水平较正常对照组显著增加(P 均<0．001);GP + LPS 组 TNF-α、IL-1β和 IL-6释放以及 NF-κB 表达水平较 LPS 组显著下降(P 均<0．001),而 SOCS-1表达水平显著增高(P <0．001);GP 组 TNF-α、IL-1β和 IL-6释放以及NF-κB 和 SOCS-1表达与正常对照组无显著差异(P 均>0．05)。结论 GP 可显著抑制 LPS 诱导的小胶质细胞炎性反应,SOCS-1可能参与了 GP 对 LPS 诱导的小胶质细胞炎性反应的抑制作用。     

川芎嗪对氧化低密度脂蛋白诱导内皮细胞炎症反应的影响

目的探讨川芎嗪对氧化低密度脂蛋白(ox-LDL)诱导内皮细胞炎症反应的影响及其分子机制。方法体外培养的人冠状动脉内皮细胞,随机分为正常对照组(无干预)、ox-LDL组(50mg/Lox-LDL)、川芎嗪组(1、10、100μmol/L川芎嗪+50mg/Lox-LDL),观察川芎嗪对细胞间黏附分子1(ICAM-1)和环氧酶2基因和蛋白表达的影响;进一步检测与其耦联的p38丝裂原活化蛋白激酶(p38MAPK)和核转录因子κB(NF-κB)信号通路活化的影响。结果与ox-LDL组比较,川芎嗪(10、100μmol/L)降低ICAM-1的基因表达(1.49±0.26、1.81±0.05比2.36±0.34,P<0.01),抑制环氧酶2的蛋白表达(0.21±0.03、0.13±0.04比0.48±0.01,P<0.05);川芎嗪(1、10μmol/L)降低ICAM-1的蛋白表达(0.16±0.03、0.14±0.02比0.87±0.05),抑制上述黏附分子和炎症因子耦联的信号分子p38MAPK的磷酸化激活(0.30±0.10、0.12±0.06比0.66±0.15),抑制信号分子NF-κB蛋白(0.32±0.08、0.20±0.11比0.62±0.10)表达水平的升高(均P<0.01)。结论川芎嗪具有对抗ox-LDL诱导的内皮细胞炎症和黏附反应,并抑制MAPK和NF-κB信号通路的激活。