Abstract
Previous studies have reported the potential developmental neurobehavioral effects of decabrominated diphenyl ethers (BDE 209) on developing animals, but the effects on adult animals are rare or controversial and the mechanism is not fully understood. In the present study, male adult Sprague-Dawley rats performed poor spatial learning and memory in Morris water maze after exposure to BDE 209 by gavage for 30 days. The expression of hippocampal glutamate receptor subunits NR1, NR2B and GluR1, the phosphorylation of NR2B subunit at Ser1301 (p-NR2B Ser1303) and GluR1 subunit at Ser831 (p-GluR1 Ser831) were all decreased, and the phosphorylation ratio of NR2B revealed an increasing trend after BDE 209 exposure. The present study provided evidence that BDE 209 could induce spatial learning and memory deficits in adult rats, and further explored the potential mechanism.
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