This study was to determine the protective effect of ω-3 polyunsaturated fatty acids（ω-3PUFAs） on MK-801-induced cognitive impairment in schizophrenia（SZ） rats and the underlying mechanism. A rat model of schizo...This study was to determine the protective effect of ω-3 polyunsaturated fatty acids（ω-3PUFAs） on MK-801-induced cognitive impairment in schizophrenia（SZ） rats and the underlying mechanism. A rat model of schizophrenia was induced by MK-801. The cognitive function of rats was assessed using a Morris water maze. The number of hippocampal neurons was measured by Nissl staining. The expression of CREB, p-CREB, BDNF, TrkB, p-TrkB, AKT, p-AKT, ERK, and p-ERK in the hippocampus of rats was detected by Western blotting. The results showed that ω-3PUFAs attenuated MK-801-induced cognitive impairment and hippocampal neurons loss, reversed the injury of the CREB/BDNF/TrkB pathway induced by MK-801, and antagonized MK-801-induced down-regulation of p-AKT and p-ERK in the hippocampus of rats. In conclusion, ω-3PUFAs enhances the CREB/BDNF/TrkB pathway by activating ERK and AKT, thereby increasing the synaptic plasticity and decreasing neuron loss, and antagonizing MK-801-induced cognitive impairment in schizophrenic rats.展开更多
基金supported in parts by grants from the Hubei Province Key Technology R&D Program(No.2015BCE094)Wuhan Science and Technology Bureau Dawn Plan Project(No.201507040410216)+1 种基金Clinical Research Physician Program of Tongji Medical CollegeHUST and the Academic Frontier Youth Team Project of HUST
文摘This study was to determine the protective effect of ω-3 polyunsaturated fatty acids（ω-3PUFAs） on MK-801-induced cognitive impairment in schizophrenia（SZ） rats and the underlying mechanism. A rat model of schizophrenia was induced by MK-801. The cognitive function of rats was assessed using a Morris water maze. The number of hippocampal neurons was measured by Nissl staining. The expression of CREB, p-CREB, BDNF, TrkB, p-TrkB, AKT, p-AKT, ERK, and p-ERK in the hippocampus of rats was detected by Western blotting. The results showed that ω-3PUFAs attenuated MK-801-induced cognitive impairment and hippocampal neurons loss, reversed the injury of the CREB/BDNF/TrkB pathway induced by MK-801, and antagonized MK-801-induced down-regulation of p-AKT and p-ERK in the hippocampus of rats. In conclusion, ω-3PUFAs enhances the CREB/BDNF/TrkB pathway by activating ERK and AKT, thereby increasing the synaptic plasticity and decreasing neuron loss, and antagonizing MK-801-induced cognitive impairment in schizophrenic rats.
