The effects of electromagnetic pulse on the protein levels of tight junction associated-proteins in the cerebral cortex, hippocampus, heart, lung, and testis of rats / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 438-444, 2011.
Article
in English
| WPRIM
| ID: wpr-306841
ABSTRACT
<p><b>OBJECTIVE</b>To investigate changes in the expression of tight junction (TJ) proteins in the cerebral cortex, hippocampus, heart, lung, and testes of rats after exposure to electromagnetic pulse (EMP).</p><p><b>METHODS</b>Eighteen adult male Sprague-Dawley rats were divided into sham and exposure groups. The exposure groups received EMP at 200 kV/m for 200 pulses with a repetition rate of 1 Hz. The expression of TJ proteins (ZO-1, occludin, actin) in the several organs was examined by western blotting.</p><p><b>RESULTS</b>ZO-1 levels in the cerebral cortex decreased 1 h and 3 h after EMP exposure compared with sham group (P<0.05). No significant difference was observed for occludin and actin. ZO-1 levels in the hippocampus increased 1 h and 3 h post-exposure (P<0.05), and occludin decreased after 3 h (P<0.05); however, actin was unaffected. ZO-1 levels in the heart increased 3 h post-exposure (P<0.05), occludin decreased 3 h post-exposure (P<0.05), and actin increased 1 h and 3 h post-exposure (P<0.05). ZO-1, occludin and actin levels in the lung decreased compared with those in the sham group (P<0.05). ZO-1 and occludin levels in the testes decreased 1 h and 3 h post-exposure (P<0.05), but actin showed no significant change.</p><p><b>CONCLUSION</b>Exposure to EMP altered the expression levels of TJ proteins, particularly ZO-1, in the organs of adult male rats, which may induce changes in barrier structure and function.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Phosphoproteins
/
Radiation Effects
/
Testis
/
Cerebral Cortex
/
Gene Expression Regulation
/
Actins
/
Rats, Sprague-Dawley
/
Tight Junctions
/
Cell Biology
/
Electromagnetic Radiation
Limits:
Animals
Language:
English
Journal:
Biomedical and Environmental Sciences
Year:
2011
Type:
Article
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