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Ca^(2+)对新生大鼠脑缺氧缺血后CREB磷酸化及神经元凋亡的影响 被引量:7
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作者 李文联 王玲 张红爱 《第四军医大学学报》 北大核心 2004年第3期217-219,共3页
目的 :探讨Ca2 + 对新生大鼠脑缺氧缺血 (HI)后c AMP反应元件结合蛋白 (CREB)磷酸化及神经元凋亡的影响 ,为临床治疗缺氧缺血性脑损伤 (HIBD)提供理论依据 .方法 :7d龄SD鼠 (n =1 2 6 ) ,完全随机分为 3组 :假手术组 4 2只 (仅作颈正中... 目的 :探讨Ca2 + 对新生大鼠脑缺氧缺血 (HI)后c AMP反应元件结合蛋白 (CREB)磷酸化及神经元凋亡的影响 ,为临床治疗缺氧缺血性脑损伤 (HIBD)提供理论依据 .方法 :7d龄SD鼠 (n =1 2 6 ) ,完全随机分为 3组 :假手术组 4 2只 (仅作颈正中切口 ,游离右颈总动脉不结扎 ) ;缺氧缺血组 4 2只、Ca2 + 拮抗剂加缺氧缺血组 (干预组 ) 4 2只 .后两组用 0号线结扎右颈总动脉 2h ,予以低氧 2h ,制备成缺氧缺血 (HI)脑损伤模型 .干预组动物分别在模型制成前、后腹腔内注射Ca2 + 拮抗剂尼莫地平 .用免疫组化法观察各组HI后不同时间点右侧海马CA1 区P CREB阳性细胞数 ;用TURNEL法观察各组HI后不同时间点右侧海马CA1 区凋亡细胞数 .结果 :HI组右侧海马CA1 区P CREB表达增强 (P <0 .0 1 ) ,4h达高峰后逐渐下降 ;HI组的凋亡细胞数增多 ,4 8h达高峰后逐渐下降 .干预组右侧海马CA1 区P CREB的表达较HI组无明显减少(P >0 .0 5 ) ,但凋亡细胞数较HI组明显减少 (P <0 .0 1 ) .结论 :Ca2 + 对CREB磷酸化无明显影响 ;Ca2 + 参与HI后神经元损伤 ;Ca2 + 拮抗剂可减轻神经元损伤 . 展开更多
关键词 缺氧缺血性脑损伤 c-AMP反应元件结合蛋白 凋亡 新生鼠 CA^2+拮抗剂 尼莫地平
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Influence of periodontitis and nonsurgical periodontal intervention on atherosclerosis diseases
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作者 Tielou Chen Shifeng Wang +3 位作者 Guoqin Liu Xinhai Zhang Dahai Tang Zhifen Wu 《Advances in Bioscience and Biotechnology》 2012年第4期531-537,共7页
Objective: Periodontitis and atherosclerosis diseases are chronic inflammatory disorders which are highly prevalent in populations. Nonsurgical periodontal intervention belongs to the initial therapy strategy to perio... Objective: Periodontitis and atherosclerosis diseases are chronic inflammatory disorders which are highly prevalent in populations. Nonsurgical periodontal intervention belongs to the initial therapy strategy to periodontal diseases. Periodontal pathogen can enter into blood stream through the ulceration epithelial resulting in bacteraemia when periodontitis is severe. The objective is to investigate the relationship between periodontitis and atherosclerosis diseases, and the influence of nonsurgical periodontal intervention on atheroma and atherosclerosis diseases. Methods: This study reviewed and analyzed the papers which published in the world associated with periodontitis or periodontal intervention on atherosclerosis diseases. Results: Periodontitis and periodontal infectious are important risk factors for atherosclerotic diseases. Much evidence has proved the durative severe periodontitis can result in bacteraemia and systemic inflammation, elevated C-response protein in serum, gingival microcirculation changed, periodontal microorganism reproduced, and endothelial dys-function and endocarditis. Nonsurgical periodontal intervention can remove the pathogenesis bacteria and calculus to recover periodontal health. Effective periodontal therapy can reduce bacteraemia and stop the hurt to vessels. Nonsurgical periodontal therapy may interfere periodontal bacteria, inhibit inflammation response and C-response protein, improving gingival microcirculation and vessel epithelial function to prevent atherosclerosis. Conclusion: Nonsurgical periodontal intervention can improve or decrease the rate of atherosclerotic disease by interfere the severe periodontitis. The detailed mechanism of periodontal intervention on atheroma and atherosclerotic disease is still need to be explored. 展开更多
关键词 ATHEROSCLEROSIS DISEASES NONSURGICAL PERIODONTAL INTERVENTION PERIODONTITIS Epithelial Function c-response Protein
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