Abstract
Objective: To explore the effects of Peiyuan Tongnao (PYTN) Capsule on working memory, the content of glutamic acid, and the expression of NMDA receptor 2B (NR2B) in rats with cerebral ischemia. Materials and Methods: 52 Sprague-Dawley rats were randomly divided into sham group, model group, nimodipine group, and PYTN group. The bilateral common carotid artery occlusion (BCAO) was performed to establish rat model with cerebral ischemia in the model, nimodipine, and PYTN groups. Gastric lavage with some drug based on body weight conversion was performed daily for 4 weeks in the nimodipine and PYTN groups. The working memory of the rats was tested by Morris water maze. The expression of Nissl body in hippocampus tissue was observed by Nissl staining. The determination of Glu content in hippocampus was detected by high-performance liquid chromatography. The expression level of NR2B in hippocampus area was determined using Western blot. Results: Morris water maze test on working memory escape latency. In the model group, day 1 versus day 4, there was a statistical difference (P
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