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褪黑激素和甲泼尼龙对脊髓损伤的保护作用比较 被引量:3

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摘要 目的 比较褪黑激素和甲泼尼龙对实验性脊髓损伤的保护作用。方法  2 4只SD大鼠随机分 4组 ,一组椎板切除不损伤脊髓 ,另三组用Allen法中度量 (50g·cm)损伤脊髓 ,分别给予褪黑激素每公斤体重 1 0 0mg腹腔注射 ;甲泼尼龙每公斤体重 30mg腹腔注射和含 5 %乙醇的生理盐水腹腔注射 ,4h后取伤段脊髓 ,测量组织的游离铁 ,丙二醛 (MDA)和谷胱甘酞过氧化物酶 (GSH px)活性。 结果 损伤后 4h伤段脊髓组织的游离铁有明显的升高 ,导致MDA大量生成 ,组织GSH px活性升高 ;褪黑激素和甲泼尼龙能降低脊髓损伤后游离铁的释放 (P <0 .0 5) ,减少MDA的生成 (P <0 .0 5) ,抑制组织GSH px活性升高 (P <0 .0 5)。 结论 褪黑激素和甲泼尼龙能同样减轻脊髓损伤后游离铁浓度升高触发的氧化作用和脂质过氧化反应 (P <0 .0 5)。
出处 《中华物理医学与康复杂志》 CAS CSCD 北大核心 2002年第1期18-20,共3页 Chinese Journal of Physical Medicine and Rehabilitation
基金 江苏省科技厅社会发展指导性计划项目 (No .BS2 0 0 0 377)
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同被引文献23

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