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-  2016 

尼可地尔通过p38MAPK信号抑制糖尿病大鼠心肌血栓素蛋白-1表达 Nicorandil Inhibits the Expression of Thrombospondin-1 in Myocardium of Diabetic Rats via p38MAPK Signal Pathway

Keywords: 糖尿病,血栓素蛋白-1,心肌细胞,尼可地尔,转化生长因子-β1

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Abstract:

目的:检测ATP敏感的钾通道激活剂尼可地尔对实验性糖尿病大鼠的心肌纤维化的影响。方法:链脲佐菌素诱导的糖尿病SD大鼠,随机分为3组,一组作为对照,一组口服安慰剂,一组给予(10mg/kg)尼可地尔12周。实验结束后分别测量心功能等指标,并检测心肌组织血栓素蛋白(TSP)-1、胶原、血管紧张素Ⅱ(AngⅡ)、TGF-β1、磷酸化p38MAPK等指标的水平。结果:与对照组比较,糖尿病大鼠12周时左心室功能受损。糖尿病大鼠心肌组织AngⅡ、TSP-1高表达,心肌组织p38MAPK水平增高,心肌间质纤维化明显。尼可地尔处理过的糖尿病大鼠,左室功能以及心肌间质纤维化程度显著减轻,其心肌组织TSP-1mRNA和蛋白质表达与p38MAPK途径均下调。结论:TSP-1在糖尿病心肌纤维化发生机制中起重要作用,与p38MAPK途径激活以及后续TGFβ-1以及胶原过度表达密切相关。尼可地尔对糖尿病心肌纤维化有较好逆转作用,其机制与抑制p38途径以及纤维化过程有关

References

[1]  Zuo XR,Wang Q,Cao Q,et al.Nicorandil prevents right ventrivular remodeling by inhibiting apoptosis and lowering pressure overload in rats with pulmonary arterial hypertension[J].Plos One,2012,7(9):e44485.
[2]  Sun Y,Zhang J,Zhang JQ,et al.Local angiotensinⅡand transforming growth factorβ1in renal fibrosis of rats[J].Hypertension,2000,35(5):1 078-1 084.
[3]  Aragno M,Mastrocola R,Alloatti G,et al.Oxidative stress triggers cardiac fibrosis in the heart of diabetic rats[J].Endocrinology,2008,149(1):380-388.
[4]  Nakae I,Takaoka A,Mitsunami K,et al.Cardioprotective effects of nicorandil in rabbits anaesthetized with halothane:potentiation of ischaemic preconditioning via KATP channels.Clinical and Experimental Pharmacology and Physiology,2000,27:810-817.
[5]  Zhang XM,Shi PH,Cao SH,et al.Expression changes of transforming growth factor-beta1 and thrombospondin-1in cavernous tissues of diabetic rats[J].Urologia Internationlis,2010,84(2):221-225.
[6]  Garside SA,Harlow CR,Hillier SG,et al.Thrombospondin-1inhibits angiogenesis and promotes follicular atresia in a novel in vitro angiogenesis assay[J].Endocrinology,2010,151(3):1 280-1 289.
[7]  Belmadani S,Bernal J,Wei CC,et al.A thrombospondin-1antagonist of transforming growth factor-βactivation blocks cardiomyopathy in rats with diabetes and elevated angiontensinⅡ[J].The American Journal of Pathology,2007,171:777-789.
[8]  Lu C,Minatoguchi S,Arai M,et al.Nicorandil improves post-ischemic myocardial dysfunction in association with opening the mitochondrial KATP channels and decreasing hydroxyl radicals in isolated rat hearts[J].Circ J,2006,70:1 650-1 654.
[9]  Colombo G,Margosio B,Ragona L,et al.Non-peptidic thrombospondin-1mimics as fibroblast growth factor-2inhibitors.An integrated strategy for the development of new antiangiogenic compounds[J].Journal of Biological Chemistry,2010,285(12):8 733-8 742.
[10]  Serizawa K,Yogo K,Aizawa K,et al.Nicorandil prevents endothelial dysfunction due to antioxidative effects via normalization of NADPH oxidase and nitric oxide synthase in streptozocin diabetic rats.Cardiovasc Diabetol,2011,10:105-110.

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