Lithium decreased NR2B tyrosine phosphorylation and interactions of NR2B and PSD-95 with Src in rat hippocampus following cerebral ischemia
Juan Ma
Xuebo Yan
Guangyi Zhang
摘要：Objective: To study the effects of chronic lithium on N-methyl-d-aspartate receptor subunit 2B (NR2B) tyrosine phosphorylation and the interactions of NR2B and PSD-95 with Src induced by cerebral ischemia/reperfusion (I/R). Methods: Transient (15 min) cerebral ischemia was induced by four-vessel occlusion procedure in SD rats. Immunoprecipitation (IP) and immunoblotting (IB)were performed to investigate the phosphorylation and interactions of proteins. The effects of lithium on tyrosine phosphorylation of NR2B and its interactions with PSD-95 and Src were examined. Results: Transient cerebral ischemia 15 min followed by reperfusion 6 h (I/R 6h) caused a significant increase in tyrosine phosphorylation of NR2B. Administration of LiCl for 7days before ischemia caused a profound decrease in tyrosine phosphorylation of NR2B. Similiarly, the interactions of NR2B and PSD-95 with Src were also enhanced by I/R 6 h.moreover, these interactions were also inhibited by chronic lithium. Conclusion: Pretreatment with lithium decrease tyrosine phosphorylation of NR2B and interactions of NR2B and PSD-95 with Src during cerebral I/R.
机标关键词：
分类号：R3(基础医学)
论文发表日期：2005-09-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：5( 256-260 )
英文信息