Effects of Endothelin A Receptor Antagonist BQ-123 on Learning and Memory Ability and Neurons Autophagy in Hippocampus in Rats with Subarachnoid Hemorrhage
10.3969/j.issn.1006-9771.2016.02.004
- VernacularTitle:内皮素A受体拮抗剂BQ-123对蛛网膜下腔出血大鼠学习记忆能力及海马区神经细胞自噬的影响
- Author:
Junjie LIU
;
Xu ZHAO
;
Yaning ZHAO
;
Jianmin LI
;
Jiwei XU
- Publication Type:Journal Article
- Keywords:
subarachnoid hemorrhage;
BQ-123;
learning and memory;
autophagy;
hippocampus;
rats
- From:
Chinese Journal of Rehabilitation Theory and Practice
2016;22(2):141-145
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of BQ-123 on the ability of learning and memory and nerve cell autophagy in hippocam-pus in rats with subarachnoid hemorrhage (SAH). Methods 72 male Sprague-Dawley rats were randomly divided into sham group, SAH model group (SAH group) and BQ-123 group with 24 rats in each group. SAH model was established by injecting the autologous blood into cisterna magna twice. The sham group was not injected blood. BQ-123 group received intracerebroventricular injection with BQ-123 18μg 30 minutes before modeling. 6, 24, 72 and 144 hours after modeling, the passive avoidance latency (PAL) and active avoidance reaction rate (AARR) were tested with Shutter Box Test, the nerve cell morphological changes of hippocampus were observed with HE staining, and the expressions of Beclin-1 and LC3-II were detected with immunohistochemical staining. Results Compared with the sham group, the PAL pro-longed, the AARR decreased (P<0.05), the nerve cells in the hippocampus reduced (P<0.05), and the expressions of Beclin-1 and LC3-II in-creased (P<0.05) in SAH group. Compared with SAH group, PAL shortened (P<0.05), AARR increased (P<0.05), the nerve cells in the hip-pocampus increased (P<0.05), and the expressions of Beclin-1 and LC3-II increased (P<0.05) in BQ-123 group. Conclusion BQ-123 can promote the recovery of learning and memory ability, which may relate to the activation of nerve cell autophagy in the hippocampus.
