Abstract:
:Possible effects of 1439 MHz electromagnetic near field (EMF) exposure on the blood-brain barrier (BBB) were investigated using immature (4 weeks old) and young (10 weeks old) rats, equivalent in age to the time when the BBB development is completed and the young adult, respectively. Alteration of BBB related genes, such as those encoding p-glycoprotein, aquaporin-4, and claudin-5, was assessed at the protein and mRNA levels in the brain after local exposure of the head to EMF at 0, 2, and 6 W/kg specific energy absorption rates (SARs) for 90 min/day for 1 or 2 weeks. Although expression of the 3 genes was clearly decreased after administration of 1,3-dinitrobenzene (DNB) as a positive control, when compared with the control values, there were no pathologically relevant differences with the EMF at any exposure levels at either age. Vascular permeability, monitored with reference to transfer of FITC-dextran, FD20, was not affected by EMF exposure. Thus, these findings suggest that local exposure of the head to 1439 MHz EMF exerts no adverse effects on the BBB in immature and young rats.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Kuribayashi M,Wang J,Fujiwara O,Doi Y,Nabae K,Tamano S,Ogiso T,Asamoto M,Shirai Tdoi
10.1002/bem.20138subject
Has Abstractpub_date
2005-10-01 00:00:00pages
578-88issue
7eissn
0197-8462issn
1521-186Xjournal_volume
26pub_type
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