摘要
本实验以大鼠脊髓损伤(SCI,50gcm)模型,研究TRH对SCI脂质过氧化的影响。结果表明,于SCI后立即iv不同剂量的TRH(0.2mg/kg,0.6mg/kg,2.0mg/kg,每小时1次,连续4次),可显著地抑制伤段脊髓组织脂质过氧化反应,使丙二醛(MDA)含量显著降低,并呈剂量依赖关系j;TRH还可使组织超氧化物歧化酶(SOD)活性明显升高。提示TRH抗SCI脂质过氧化反应是通过升高SOD活性,清除自由基(尤其是氧自由基)介导的,它可能是1种有效的自由基清除剂。
The effects of thyrotropin releasing hormone (TRH) on lipid peroxidation in spinal cord injury in rats were studied. It was found that TRH (0.2 mg/kg, 0.6mg/kg, 2.0mg/kg bolus, followed by the same doses/h over 4 h, iv) could inhibit lipid peroxidation of the injuried spinal cord, decrease malondialdehyde (MDA)production and significantly increase superoxide dismutase (SOD) activity in a dose-dependent manner. The results indicate that the antioxidant effects of TRH are the result of increase of SOD activity. TRH might be an effective free radical scavenger.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
1990年第6期500-502,共3页
Journal of Third Military Medical University
关键词
TRH
脊髓损伤
过氧化脂质
自由基
thyrotropin releasing hormone
spinal cord injury
lipid peroxidation
free radicals
superoxide dismutase
