Objective：To investigate the production of nitric oxide（NO） and the expression of inducible nitric oxide synthase （iNOS）, and their possible role in abdominal aortic aneurysm （AAA）. Methods： A total of 28 pati...Objective：To investigate the production of nitric oxide（NO） and the expression of inducible nitric oxide synthase （iNOS）, and their possible role in abdominal aortic aneurysm （AAA）. Methods： A total of 28 patients with AAA, 10 healthy controls, and 8 patients with arterial occlusive disease were enrolled into this study. Standard colorimetric assay was used to examine NO concentration in plasma from patients with AAA and normal controls, and in cultured smooth muscle cells （SMCs）. Expression of iNOS in aortas and cultured SMCs were detected by immunochemistry. The correlation of iNOS expression with age of the patient, size of aneurysm, and degree of inflammation was also investigated by Cochran-Mantel-Haenszel χ^2 test and Kendall correlation. Results ： Expression of iNOS increased significantly in the wall of aneurism in the patients with AAA compared to the healthy controls （P〈0.05） and the patients with occlusive arteries （P〈0.05）. iNOS protein and media NOx （nitrite＋nitrate） also increased in cultured SMCs from human AAA （n=4, P〈0.05）, while plasma NOx decreased in patients with AAA （n= 25） compared to the healthy controls （n=20）. There was a positive correlation between iNOS protein and the degree of inflammation in aneurismal wall （Kendall coefficient = 0. 5032, P= 0. 0029）. Conclusion： SMCs and inflammatory cells are main cellular sources of increased iNOS in AAA, and NO may play a part in pathogenesis in AAA through inflammation, SMCs and oxidative stress.展开更多
目的:观察诱导型一氧化氮合酶(induc ib le n itric oxide synthase,iNOS)在大鼠正畸牙齿移动引发牙周组织改建过程中的表达,探讨NO/iNOS在正畸牙齿移动中的作用机制。方法:56只雄性SD大鼠随机分为8组。分别在正畸加力1,3,5,7,14,21,28 ...目的:观察诱导型一氧化氮合酶(induc ib le n itric oxide synthase,iNOS)在大鼠正畸牙齿移动引发牙周组织改建过程中的表达,探讨NO/iNOS在正畸牙齿移动中的作用机制。方法:56只雄性SD大鼠随机分为8组。分别在正畸加力1,3,5,7,14,21,28 d后进行免疫组化染色和图像分析。结果:正畸加力3 d后,牙周组织细胞iNOS表达增强,7 d iNOS表达达到高峰(P<0.01),以后iNOS表达下降。结论:NO/iNOS参与了正畸牙周组织改建过程。展开更多
基金Supported by the National Natural Science Foundation of China (No. 39800177)
文摘Objective：To investigate the production of nitric oxide（NO） and the expression of inducible nitric oxide synthase （iNOS）, and their possible role in abdominal aortic aneurysm （AAA）. Methods： A total of 28 patients with AAA, 10 healthy controls, and 8 patients with arterial occlusive disease were enrolled into this study. Standard colorimetric assay was used to examine NO concentration in plasma from patients with AAA and normal controls, and in cultured smooth muscle cells （SMCs）. Expression of iNOS in aortas and cultured SMCs were detected by immunochemistry. The correlation of iNOS expression with age of the patient, size of aneurysm, and degree of inflammation was also investigated by Cochran-Mantel-Haenszel χ^2 test and Kendall correlation. Results ： Expression of iNOS increased significantly in the wall of aneurism in the patients with AAA compared to the healthy controls （P〈0.05） and the patients with occlusive arteries （P〈0.05）. iNOS protein and media NOx （nitrite＋nitrate） also increased in cultured SMCs from human AAA （n=4, P〈0.05）, while plasma NOx decreased in patients with AAA （n= 25） compared to the healthy controls （n=20）. There was a positive correlation between iNOS protein and the degree of inflammation in aneurismal wall （Kendall coefficient = 0. 5032, P= 0. 0029）. Conclusion： SMCs and inflammatory cells are main cellular sources of increased iNOS in AAA, and NO may play a part in pathogenesis in AAA through inflammation, SMCs and oxidative stress.
文摘目的:观察诱导型一氧化氮合酶(induc ib le n itric oxide synthase,iNOS)在大鼠正畸牙齿移动引发牙周组织改建过程中的表达,探讨NO/iNOS在正畸牙齿移动中的作用机制。方法:56只雄性SD大鼠随机分为8组。分别在正畸加力1,3,5,7,14,21,28 d后进行免疫组化染色和图像分析。结果:正畸加力3 d后,牙周组织细胞iNOS表达增强,7 d iNOS表达达到高峰(P<0.01),以后iNOS表达下降。结论:NO/iNOS参与了正畸牙周组织改建过程。
