The Screening of Genes Sensitive to Long-Term, Low-Level Microwave Exposure

Bron: www.ncbi.nlm.nih.gov/pubmed/26383594?dopt=Abstract
28 aug. 2015

Biomed Environ Sci. 2015 Aug;28(8):558-70. doi: 10.3967/bes2015.080.

The Screening of Genes Sensitive to Long-Term, Low-Level Microwave Exposure and Bioinformatic Analysis of Potential Correlations to Learning and Memory.
Zhao YL1, Li YX1, Ma HB1, Li D2, Li HL3, Jiang R1, Kan GH1, Yang ZZ1, Huang ZX1.
1Astronaut Research and Training Center of China, Beijing 100193, China.
2Beijing Institute of Radiation Medicine, Beijing 100850, China.
3Southern Medical University, Guangzhou 510282, Guangdong, China.

Abstract

OBJECTIVE:
To gain a better understanding of gene expression changes in the brain following microwave exposure in mice. This study hopes to reveal mechanisms contributing to microwave-induced learning and memory dysfunction.

METHODS:
Mice were exposed to whole body 2100 MHz microwaves with specific absorption rates (SARs) of 0.45 W/kg, 1.8 W/kg, and 3.6 W/kg for 1 hour daily for 8 weeks. Differentially expressing genes in the brains were screened using high-density oligonucleotide arrays, with genes showing more significant differences further confirmed by RT-PCR.

RESULTS:
The gene chip results demonstrated that 41 genes (0.45 W/kg group), 29 genes (1.8 W/kg group), and 219 genes (3.6 W/kg group) were differentially expressed. GO analysis revealed that these differentially expressed genes were primarily involved in metabolic processes, cellular metabolic processes, regulation of biological processes, macromolecular metabolic processes, biosynthetic processes, cellular protein metabolic processes, transport, developmental processes, cellular component organization, etc. KEGG pathway analysis showed that these genes are mainly involved in pathways related to ribosome, Alzheimer's disease, Parkinson's disease, long-term potentiation, Huntington's disease, and Neurotrophin signaling. Construction of a protein interaction network identified several important regulatory genes including synbindin (sbdn), Crystallin (CryaB), PPP1CA, Ywhaq, Psap, Psmb1, Pcbp2, etc., which play important roles in the processes of learning and memorye.

CONCLUSION:
Long-term, low-level microwave exposure may inhibit learning and memory by affecting protein and energy metabolic processes and signaling pathways relating to neurological functions or diseases.

Copyright © 2015 The Editorial Board of Biomedical and Environmental Sciences. Published by China CDC. All rights reserved.



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