EFFECT OF EMP ON THE EXPRESSION OF SYNAPTIC PLASTICITY-ASSOCIATED PROTEINS IN RAT HIPPOCAMPUS
Shaochen Liu
Abstract
Shaochen Liu
Abstract
Objective To explore the expression of synaptic plasticity-associated proteins in hippocampus of rats exposed to EMP.Methods Wistar rats were exposed to EMP(6×10~4V·m~(-1)) and the expression of brain-derived neurotrophic factor(BDNF) and neural celladhesion molecule(NCAM) proteins in hippocampus were detected with Western blot analysis.Results The level of BDNF increased 25.8% more in exposed group than in control group 6 h after EMP exposure(P0.05),then decreased gradually.7 d after exposure BDNF rose again(32.2% more in exposed group than in control group,P0.05).The expression of NCAM protein increased 8.1% more in exposed group than in control group 6~12 h after exposure(P0.05),and decreasod 10.8% more 3 d after exposure(P0.05),and again increased 14.1% more 7 d after exposure(P0.05).Conclusion Up-regulation of BDNF and NCAM may play a role in positive alteration of synaptic plasticity during the early stage after EMP irradiation.
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Objective To explore the expression of synaptic plasticity-associated proteins in hippocampus of rats exposed to EMP.Methods Wistar rats were exposed to EMP(6×10~4V·m~(-1)) and the expression of brain-derived neurotrophic factor(BDNF) and neural celladhesion molecule(NCAM) proteins in hippocampus were detected with Western blot analysis.Results The level of BDNF increased 25.8% more in exposed group than in control group 6 h after EMP exposure(P0.05),then decreased gradually.7 d after exposure BDNF rose again(32.2% more in exposed group than in control group,P0.05).The expression of NCAM protein increased 8.1% more in exposed group than in control group 6~12 h after exposure(P0.05),and decreasod 10.8% more 3 d after exposure(P0.05),and again increased 14.1% more 7 d after exposure(P0.05).Conclusion Up-regulation of BDNF and NCAM may play a role in positive alteration of synaptic plasticity during the early stage after EMP irradiation.
Key concepts: Hippocampus, Synaptic plasticity, Neurotrophic factors, Neural cell adhesion molecule, Western blot, Neuroplasticity, Internal medicine, Endocrinology