Volume 25 Issue 2
Nov.  2019
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ZHAO Li, PENG Rui Yun, WANG Shui Ming, WANG Li Feng, GAO Ya Bing, DONG Ji, LI Xiang, SU Zhen Tao. Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure[J]. Biomedical and Environmental Sciences, 2012, 25(2): 182-188. doi: 10.3967/0895-3988.2012.02.009
Citation: ZHAO Li, PENG Rui Yun, WANG Shui Ming, WANG Li Feng, GAO Ya Bing, DONG Ji, LI Xiang, SU Zhen Tao. Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure[J]. Biomedical and Environmental Sciences, 2012, 25(2): 182-188. doi: 10.3967/0895-3988.2012.02.009

Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure

doi: 10.3967/0895-3988.2012.02.009
Funds:  the National Natural Science Foundation of China(30901169)
  • Objective To analyze the effects of long-term microwave exposure on hippocampal structure and function in the rat.Methods Experiments were performed on 184 male Wistar rats (three exposure groups and a sham group).Microwaves were applied daily for 6 min over 1 month at average power densities of 2.5,5,and 10 mW/cm2.Learning and memory abilities were assessed by Morris water maze.High performance liquid chromatography was used to detect neurotransmitter concentrations in the hippocampus.Hippocampal structures were observed by histopathological analysis.Results Following long-term microwave exposure there was a significant decrease in learning and memory activity in the 7 d,14 d,and 1 m in all three microwave exposure groups.Neurotransmitter concentrations of four amino acids (glutamate,aspartic acid,glycine,and gamma-aminobutyric acid) in hippocampus were increased in the 2.5 and 5 mW/cm2 groups and decreased in the 10 mW/cm2 group.There was evidence of neuronal degeneration and enlarged perivascular spaces in the hippocampus in the microwave exposure groups.Further,mitochondria became swollen and cristae were disordered.The rough endoplasmic reticulum exhibited sacculated distension and there was a decrease in the quantity of synaptic vesicles.Conclusion These data suggest that the hippocampus can be injured by long-term microwave exposure,which might result in impairment of cognitive function due to neurotransmitter disruption.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure

doi: 10.3967/0895-3988.2012.02.009
Funds:  the National Natural Science Foundation of China(30901169)

Abstract: Objective To analyze the effects of long-term microwave exposure on hippocampal structure and function in the rat.Methods Experiments were performed on 184 male Wistar rats (three exposure groups and a sham group).Microwaves were applied daily for 6 min over 1 month at average power densities of 2.5,5,and 10 mW/cm2.Learning and memory abilities were assessed by Morris water maze.High performance liquid chromatography was used to detect neurotransmitter concentrations in the hippocampus.Hippocampal structures were observed by histopathological analysis.Results Following long-term microwave exposure there was a significant decrease in learning and memory activity in the 7 d,14 d,and 1 m in all three microwave exposure groups.Neurotransmitter concentrations of four amino acids (glutamate,aspartic acid,glycine,and gamma-aminobutyric acid) in hippocampus were increased in the 2.5 and 5 mW/cm2 groups and decreased in the 10 mW/cm2 group.There was evidence of neuronal degeneration and enlarged perivascular spaces in the hippocampus in the microwave exposure groups.Further,mitochondria became swollen and cristae were disordered.The rough endoplasmic reticulum exhibited sacculated distension and there was a decrease in the quantity of synaptic vesicles.Conclusion These data suggest that the hippocampus can be injured by long-term microwave exposure,which might result in impairment of cognitive function due to neurotransmitter disruption.

ZHAO Li, PENG Rui Yun, WANG Shui Ming, WANG Li Feng, GAO Ya Bing, DONG Ji, LI Xiang, SU Zhen Tao. Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure[J]. Biomedical and Environmental Sciences, 2012, 25(2): 182-188. doi: 10.3967/0895-3988.2012.02.009
Citation: ZHAO Li, PENG Rui Yun, WANG Shui Ming, WANG Li Feng, GAO Ya Bing, DONG Ji, LI Xiang, SU Zhen Tao. Relationship between Cognition Function and Hippocampus Structure after Long-term Microwave Exposure[J]. Biomedical and Environmental Sciences, 2012, 25(2): 182-188. doi: 10.3967/0895-3988.2012.02.009

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