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内源性一氧化氮合酶抑制物:一种新的内皮功能不全预测因子 总被引:13,自引:0,他引:13
血管内皮功能不全是多种心血管疾病的共同病理基础 .内源性一氧化氮合酶 (NOS)抑制物能阻止内皮细胞 (NO)合成 ,导致血管内皮功能降低 .高血压 ,动脉粥样硬化 ,糖尿病血管并发症等心血管疾病的内皮功能不全与内源性 NOS抑制物含量升高密切相关 .内源性 NOS抑制物可作为内皮功能不全的预测因子 ;阻止或抑制内源性 NOS抑制物生成可能是寻找防治心血管疾病药物的新途径 . 相似文献
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黄震华 《中国新药与临床杂志》2008,27(8)
炎症反应在动脉粥样硬化的发生、发展中发挥重要作用。肾素血管紧张肽系统通过增加各种炎症因子的合成,发挥致动脉粥样硬化作用。抑制肾素血管紧张肽系统的治疗通过抑制炎症反应,可减少心血管事件的发生率。 相似文献
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他汀类药的非降脂作用 总被引:5,自引:1,他引:4
他汀类药是近年发现的有效降脂药 ,大量实验及临床研究资料显示 ,该类药除具有显著的降脂作用外 ,对心血管疾病还具有独特的防治和保护作用。因此多数报道认为 ,他汀类药的临床作用可能有多种非降脂机制参与 ,这些机制主要包括改善内皮功能、抗血小板聚集、减轻或消除炎症反应及抑制动脉粥样硬化进展等。本文综述他汀类药的非降脂作用。 相似文献
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低密度脂蛋白经氧化修饰后主要通过凝集素样氧化低密度脂蛋白受体-1导致管内皮细胞损伤,诱导黏附分子和炎症因子的合成与释放,加重血管炎症反应,诱导内皮细胞凋亡,进而导致动脉粥样硬化等心血管疾病.中药复方通过抑制低密度脂蛋白(LDL)氧化生成氧化低密度脂蛋白(OX-LDL),防治血管内皮损伤,进而防治动脉粥样硬化的发生与发展... 相似文献
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细胞自噬是生物体内清除功能异常的细胞器、错误折叠的蛋白质、被氧化的脂类等有害大分子物质的重要途径。在动脉粥样硬化中的作用具有双重性,不仅作为抵御环境变化对细胞造成损害的防御机制,又可以诱导细胞Ⅱ型程序性死亡,如何调控自噬在动脉粥样硬化的防治中至关重要。巨噬细胞、血管内皮细胞和血管平滑肌细胞的自噬参与动脉粥样硬化发生发展过程,在斑块的形成和破裂中发挥潜在作用。深入了解细胞自噬与动脉粥样硬化的关系,将有可能为动脉粥样硬化的药物防治提供新的治疗靶点。 相似文献
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目的 利用网络药理学联合GEO测序数据、分子对接技术探索大黄素治疗急性胰腺炎的潜在作用机制。方法 借助PubChem、SwissTargetPrediction、DrugBank、PharmMapper、TTD、CTD数据库获取大黄素作用靶点,通过GeneCards、OMIM、DrugBank、CTD数据库以及GSE194331数据集差异分析结果获取急性胰腺炎疾病靶点,二者取交集得到大黄素治疗急性胰腺炎靶点。使用String数据库和Cytoscape软件构建靶点蛋白互作网络,R软件ClusterProfiler包对靶点功能富集分析,Cytoscape的CytoNCA插件筛选核心靶点。使用PyMOL和Autodock软件进行分子对接和结果可视化。结果 大黄素治疗急性胰腺炎的潜在作用靶点有246个,主要涉及脂质与动脉粥样硬化、P13K-AKT信号通路、FoxO信号通路、HIF-1信号通路以及IL-17信号通路等。其中20个核心靶点与大黄素均有结合潜力,CTNNB1、HIF1A和IL1B等9个靶点与大黄素有良好的结合潜力。结论 大黄素通过多靶点、多通路发挥治疗急性胰腺炎的作用。 相似文献
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Badreldin H. Ali Intisar Al‐Lawati Abderrahim Nemmar 《Journal of applied toxicology : JAT》2013,33(7):626-630
Emodin (a rhubarb anthraquinone) has strong antioxidant and anticancer actions, and recent studies indicated that it reduces cellular oxidative stress induced by various insults and drugs. Cisplatin is an anticancer drug that is associated with nephrotoxicity and induces oxidative stress in cultured human kidney (HEK 293) cells. This study aimed to assess the in‐vitro antioxidant properties of the emodin against cisplatin‐induced oxidative stress in HEK 293 cells. Our study revealed that emodin acted as a potent free radical scavenger and provided nephroprotection against cisplatin‐induced oxidative stress. Emodin as low as 0.5 µm did not decrease cell viability and restored the cisplatin‐induced glutathione depletion and total antioxidant capacity in a dose‐dependent manner. Emodin augmented the cisplatin‐induced inhibition of antioxidant enzymes (catalase, glutathione peroxidase, glutathione S‐transferase, glutathione reductase and superoxide dismutase). These results suggest that emodin has the potential to be used as an adjunct therapeutic agent in patients receiving cisplatin treatment. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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急性胰腺炎是常见的临床急性腹部疾病,其起病急、进展迅速、结局不良,限制炎症发展是急性胰腺炎治疗的有效策略。姜黄素是一种来自姜黄的黄色素,具有抗纤维化、抗癌、抗细胞凋亡和抗炎等多种活性。姜黄素可通过抑制核因子-κB(NF-κB)相关通路的活性,调控丝裂原活化蛋白激酶(MAPK)信号通路,抑制Janus激酶2(JAK2)/信号转导及转录激活蛋白3(STAT3)信号通路,激活肌醇磷脂-3-激酶(PI3K)/丝氨酸-苏氨酸激酶(Akt)信号通路,抑制炎症因子分泌,抑制趋化因子上皮中性粒细胞激活肽78(ENA-78)的表达,抑制环氧化酶2(COX-2)的表达,改善细胞自噬功能,抑制胰腺星状细胞活化,减轻氧化应激反应,发挥防治急性胰腺炎的作用。综述了姜黄素防治急性胰腺炎的作用机制,以期为姜黄素的临床研究提供参考。 相似文献
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慢性心力衰竭是一种常见的心血管疾病,也是终末期和最主要的死亡原因之一。芪参益气滴丸由黄芪、三七、丹参、降香等组成,共奏益气活血、通络行气、化瘀止痛的功效,可用于治疗射血分数降低的心力衰竭、射血分数保留的心力衰竭和缺血性心力衰竭,其作用机制与抗炎症反应,减少心肌纤维化、抑制心室重构,调节氧化应激,促进血管新生,抑制心肌细胞凋亡,调节免疫功能密切相关。鉴于此,对芪参益气滴丸治疗不同类型慢性心力衰竭的临床疗效及其作用机制研究进展进行综述,为慢性心力衰竭的治疗提供参考。 相似文献
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《Expert opinion on therapeutic targets》2013,17(7):809-820
Background: Aortic stenosis (AS) is the commonest valvular heart disease in the developed world. It is becoming increasingly accepted that the pathogenesis of AS and of its preceding abnormalities, aortic valve sclerosis (AVS) and aortic valve calcification (AVC), shares many characteristics with the atherosclerotic process. Objective: To assess the contribution of established and emerging vascular risk factors in the development of AS and to evaluate the potential of pharmacological intervention to modify the natural history of AS. Methods: We reviewed the epidemiological data that link AS and atherosclerosis and studies of vasculoprotective agents in patients with AS. Results/conclusions: AS, AVS and AVC share many common risk factors with atherosclerosis and are possible markers of preclinical vascular disease. Statins appear to delay the progression of AS. However, more studies are needed before introducing such pharmacologic treatment for AS. The future may point towards targeted prevention of AS. 相似文献
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Emodin, a major component of Rheum palmatum, has been reported to significantly protect neural tissue against apoptosis and autophagy. However, the effects and underlying mechanisms of action of emodin in muscle atrophy are still poorly defined. In this study, we investigated the protective effects and the underlying mechanisms by which emodin acts on tumor necrosis factor alpha (TNF-α)-induced apoptosis and autophagy in mouse C2C12 myoblasts. Emodin, at various concentrations, decreased TNF-α-induced apoptosis in C2C12 myoblasts, which were analyzed by Hoechst 33342 staining and annexin V/PI analysis. Emodin also inhibited the collapse of the mitochondrial membrane potential and the generation of reactive oxygen species in TNF-α-stimulated C2C12 myoblasts. Consistent with these results, the expression of Bcl-2 was increased, whereas the expression of Bax, cleaved-caspase 3 and cleaved-PARP was decreased after emodin treatment. These data demonstrate that emodin attenuated apoptosis in TNF-α-stimulated C2C12 myoblasts through mitochondrial signaling pathways. In addition, emodin inhibited autophagy in TNF-α-stimulated C2C12 myoblasts by suppressing the expression of LC3-II, Beclin-1 and Atg7. Emodin also resulted in the upregulation of the phosphorylated forms of Akt. Taken together, these results suggest that emodin inhibited apoptosis and autophagy in TNF-α-induced C2C12 myoblasts, possibly through the activation of phosphorylated Akt. Our findings suggest that emodin could be a potential therapeutic agent in the treatment of muscle atrophy. 相似文献