| Autor: |
Zhang MR; College of Life Science, Liaoning Normal University, Dalian 116081, China., Qu C; College of Life Science, Liaoning Normal University, Dalian 116081, China.; The 210th Hospital of PLA, Dalian 116021, China., Sun J; College of Life Science, Liaoning Normal University, Dalian 116081, China., Wang C; Department of Neurology, Central Hospital of Dalian, Dalian 116033, China., Li HY; College of Life Science, Liaoning Normal University, Dalian 116081, China., Zhang YJ; College of Life Science, Liaoning Normal University, Dalian 116081, China., Zhang BQ; The Key Laboratory of Cell Transplantation, Health Clinical Center of Ministry, Qingdao 266100, China., Zou W; College of Life Science, Liaoning Normal University, Dalian 116081, China. weizou60@126.com. |
| Abstrakt: |
To study the correlation between the spatial cognitive impairment and different subtypes of estrogen receptor α (ERα) of hippocampus in diabetic mice, we used alloxan (intraperitoneal injection) to induce type 1 diabetes in male Kunming mice and compared the spatial cognitive ability of the model mice with that of control mice through Morris water maze test. Meanwhile, using Western blot, we detected the protein expressions of ER-α36, ER-α66, caveolin-1, PKCα, cAMP-response element binding protein 2 (CREB2), and synaptophysin (Syn) in the hippocampus of the mice. The results showed that on the 3rd and 5th days of training, the ability of spatial learning and memory in the diabetic mice was significantly inferior to that of the control mice (P < 0.05). In the diabetic mice, the protein expressions of caveolin-1 and PKCα were decreased (P < 0.05), but ER-α66 expression was unaffected, while ER-α36 and CREB2 expressions were significantly increased (P < 0.05) compared with those of the control mice. The results suggest that abnormal expression of ER-α36 and related signal molecules may be important factors for diabetes-induced spatial cognitive impairment. |
