Effect of electromagnetic radiation on the expression of calmodulin kinase Ⅱ and cAMP responsive element binding protein in primary culture hippocampal neurons of rats
10.3760/cma.j.issn.1674-6554.2013.10.005
- VernacularTitle:电磁辐射对大鼠海马神经元钙调蛋白激酶Ⅱ和环磷腺苷反应元件结合蛋白表达的影响
- Author:
Changhua SHI
;
Yuhong LI
;
Yatao HU
;
Qian XU
- Publication Type:Journal Article
- Keywords:
Electromagnetic radiation;
Hippocampal neuron;
Calmodulin kinase Ⅱ;
cAMP responsive element binding protein
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2013;22(10):880-882
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the changes of calmodulin kinase Ⅱ (CaMK Ⅱ) and cAMP responsive element binding protein(CREB) expressing in primary cultured hippocampal neurons and its relationship with learning and memory deficit after 2000 μW/cm2 electromagnetic radiation.Methods Primary cultured hippocampal neurons in vitro were randomly divided into normal control group,sham-radiated group,and 1 h/d,2 h/d,3 h/dradiation groups.The neurons in the radiation groups were received microwave exposure of 2000 μW/cm2.The change of CaMK Ⅱ and CREB protein in hippocampal neurons of each group of rats were measured with western blot,and the expression of CaMK Ⅱ and CREB mRNA in hippocampus were determined by RT-PCR.Results Compared with control group((0.78 ± 0.07),(0.62 ± 0.12)),the expression of CaMK Ⅱ protein (1 h/d(0.59 ±0.05),2h/d(0.44 ±0.08),3h/d(0.18 ±0.04)) and its mRNA(1h/d(0.41 ±0.08),2h/d(0.34 ±0.04),3h/d(0.24 ±0.02)) was obviously decreased (P＜0.05).Compared with control group((0.69 ±0.10),(0.80 ±0.12)),the expression of CREB protein(1h/d(0.49 ±0.05),2h/d(0.4 ±0.04),3h/d(0.17 ±0.03))and its mRNA (1 h/d (0.68 ± 0.11),2h/d (0.53 ± 0.08),3h/d (0.30 ± 0.03)) was obviously decreased after radiation(P＜0.05).Conclusion Electromagnetic radiation of 2000 μW/cm2 exposure could weaken the learning and memory abilities of rats and the decreases in the expression of CaMK Ⅱ and CREB protein and their mRNA in hippocampus may be involved in the pathophysiological process of learning and memory deficit.
