美洛昔康对老年痴呆模型大鼠学习记忆能力及脑组织SOD,MAO-B,MDA的影响

被引:14
作者
李钟勇
张鹏
机构
[1] 四川省遂宁市中心医院
关键词
老年痴呆; 美洛昔康; 慢性铝过负荷; 保护;
D O I
10.13748/j.cnki.issn1007-7693.2011.02.007
中图分类号
R285.5 [中药实验药理];
学科分类号
1008 ;
摘要
目的探讨美洛昔康对老年痴呆模型大鼠抗痴呆作用及其作用机制。方法采用慢性铝过负荷建立大鼠脑损伤老年痴呆动物模型,通过每天给予大鼠灌胃葡萄糖酸铝(Al3+200 mg.kg-1)溶液,每周持续5 d,连续灌胃20周建立老年痴呆大鼠动物模型;根据大鼠体重每千克给予3mg或1mg美洛昔康的比例,在大鼠灌胃给予铝后进行美洛昔康溶液灌胃。建模成功后,分别观察大鼠空间学习记忆能力、海马病理形态学变化及大鼠脑组织SOD,MAO-B活性和MDA含量。结果老年痴呆模型大鼠学习记忆能力明显下降、海马神经元损伤,而在大鼠脑组织中MDA含量及MAO-B活性则呈现明显升高趋势,同时大鼠脑组织SOD活性则显著降低。给予美洛昔康能明显改善老年痴呆模型大鼠的学习记忆能力,减轻大鼠海马神经元细胞损伤,同时使老年痴呆大鼠脑组织MDA含量明显减少,而大鼠脑组织MAO-B活性升高及SOD活性降低的趋势得到明显遏制。结论美洛昔康使老年痴呆模型大鼠学习记忆能力有明显的改善,对老年痴呆模型大鼠有显著的保护作用。
引用
收藏
页码:99 / 103
页数:5
相关论文
共 5 条
[1]  
Protective effects of meloxicam on aluminum overload induced cerebral damage in mice. YANG J Q,LIU B Z,HE B C,et al. European Journal of Pharmacology . 2006
[2]  
Bifunctional drug derivatives of MAO-B inhibitor rasagiline and iron chelator VK-28 as a more effective approach to treatment of brain ageing and ageing neurodegenerative diseases. Youdim M B,Fridkin M,Zheng H,et al. Mechanisms of Ageing and Development . 2005
[3]  
Inhibitors of cyclooxygenase-2,but not cyclooxygenase-1 provide structural and functional protection against quinolinic acid Induced neurodegeneration. Heather C,Salzberg B,Chen EY et al. Journal of Pharmacology and Experimental Therapeutics . 2003
[4]  
Intramuscular ziprasidone:moving beyond the conventional in the treatment of acute agitation in schizophrenia. Broon S. Journal of Clinical Psychiatry . 2003
[5]  
Assessment of the relative contribution of COX-1 and COX-2 isoforms to ischemia-induced oxidative damage and neurodegeneration following transient global cerebral ischemia. Candelario-Jalil E,Gonzalez-Falcon A,Garcia-Cabrera M,et al. Journal of Neurophysiology . 2003