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(NL2011)
日本医科大学老年病研究所是国际上最早开展氢气生物学效应的研究单位,他们过去在做氢气效应以前,主要的研究领域在老年疾病,例如糖尿病肥胖、神经退行性疾病如老年性痴呆、衰老等。目前这些工作现在都与氢气进行了结合。但目前关于肥胖和老年性痴呆还没有发表论文,我一年前参加日本的氢气医学学术会议上了解,他们事实上已经在这两个方面开展并完成了大量研究工作,实验结果也非常漂亮。据了解,下周二(25日)太田成男教授来上海学术交流,将会有这个方面研究进展的介绍。
Hydrogen-rich Saline Reduces Oxidative Stress and Inflammation by Inhibit of JNK.pdf
来自中国医科大学附属医院神经内科曹云鹏课题组,去年曾经发表一篇关于氢气生理盐水治疗老年性痴呆的研究,文章发表在Brain res上。研究是采用脑内注射amyloid β的老年性痴呆动物模型,腹腔注射氢气盐水,采用炎症因子测定,行为学评价,氧化损伤指标和LTP电生理指标,确定了治疗效果,这个研究的疾病类型,选择的研究指标和研究手段等,新意都比较突出,发表在Brain res上其实比较委屈。我相信这个文章将来肯定会有比较好的引用情况。因为老年性痴呆是研究热点,也是治疗难点,而氢气如果效果理想,这个领域将是比较重要的研究方向。一是这个疾病比较重要,另一个是抗炎症是这个疾病将来比较有前途的治疗手段。从我目前了解的情况看,日本有学者开展氢气对老年性认知障碍的研究,效果比较理想,老年性痴呆虽然不同,但有类似性。提示氢气对人类的老年性痴呆也有可能有治疗效果。如果氢气在这个疾病能得到临床证据,将是比较有前景的。
最近该课题组再发表一篇文章,氢气可以通过抑制信号分子JNK和NFk-B发挥抗氧化和抗炎症作用,发挥对老年性痴呆的治疗作用。文章发表在Neuroscience Letters上。相对来讲,这个文章的研究思路、新意、研究指标等都与前一文章相比逊色许多。但毕竟是沿着一个思路又从信号途径上深入了一步。据说日本学者是采用转基因动物模型,估计他们现在是要发表在比较好的杂志上。不过从发现的问题本身讲,这个工作仍具有很好的创新性。如果能采用转基因模型,即使证明同一个问题,由于动物模型的先进性和稳定性,结果也就有更强的说服力。
Hydrogen -rich Saline Reduces Oxidative Stress and Inflammation by Inhibit of JNK and NF-κB Activation in a Rat Model of Amyloid-beta-induced Alzheimer's Disease
Cai Wanga, 1, Jian Lic, 1, Qiang Liub, Rui Yangc, John H. Zhangd, Yun-peng Caoa, , and Xue-jun Sune
Received 25 July 2010; revised 26 December 2010;
accepted 7 January 2011. Available online 14 January 2011.
Abstract
This study is to examine if hydrogen-rich saline reduced amyloid-beta (Aβ) induced neural inflammation and oxidative stress in a rat model by attenuation of activation of JNK and NF-κB. Sprague-Dawley male rats (n = 18, 280-330 g) were divided into three groups, sham operated, Aβ1-42 injected and Aβ1-42 plus hydrogen-rich saline treated animals. Hydrogen-rich saline (5 ml/kg, i.p., daily) was injected for 10 days after intraventricular injection of Aβ1-42. The levels of IL-1β were assessed by ELISA analysis, 8-OH-dG by immunohistochemistry in the brain slides, and JNK and NF-κB by immunohistochemistry and western blotting. After Aβ1-42 injection, the level of IL-1β, 8-OH-dG, JNK and NF-κB all increased in brain tissues, while hydrogen-rich saline treatment decreased the level of IL-1β, 8-OH-dG and the activation of JNK and NF-κB. In conclusion, Hydrogen-rich saline prevented Aβ-induced neuroinflammation and oxidative stress, possibly by attenuatation of activation of c-Jun NH2-terminal kinase (JNK)and nuclear factor-κB(NF-κB) in this rat model.
Key words: Alzheimer's disease; amyloid-beta; hydrogen; oxidative stress; JNK; NF-κB
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