排序方式: 共有5条查询结果,搜索用时 406 毫秒
1
1.
The effect of monosialoganglioside GM1 of different doses on the long-term potentiation (LTP) of synaptic transmission has been studied in the CA1 region of rat hippocampal slices, and the possible role that calcium ion and NMDA receptor play has also been investigated. The results reveal that larger magnitude of LTP is induced in hippocampal slices pre-incubated with GM1. The dose-response curve appears in diphase, and the largest magnitude of LTP has been obtained at the GM1 concentration of 50 mg/L in incubation ACSF. Moreover, the magnitude of LTP induced from the slices pre-incubated with GM1 at lower calcium ion concentration is similar to that obtained from the control slices at normal calcium ion concentration. Under higher calcium ion concentration, the enhancing effect of GM1 on LTP seems relatively feeble. After NMDA receptors were blocked, no enhancing effect of GM1 was observed. The mechanism of GM1 action on LTP is discussed. 相似文献
2.
3.
4.
本工作在大鼠海马脑片上观察了不同剂量的GM1对CA1区长时程增强(LTP)的作用,并探讨了钙离子和NMDA受体在其中的可能作用。结果表明,GM1能增大强直刺激诱导的LTP,其剂量-效应曲线呈双向性变化,剂量为50mg/1时增大作用最强。在低钙条件下,经含GM1的人工脑脊液孵育的脑片上能诱导出与正常钙条件下相接近的LTP。在高钙条件下,GM1对LTP的增大作用相对较弱。结果还表明,在NMDA受体被阻断时,GM1的作用也就消失。本文还对GM1的作用机制进行了讨论。 相似文献
5.
1