Abstract
Objective To investigate the effects of zinc on long-term potentiation(LTP) in hippocampus and behavior of restraint rats.Methods A rat stress model was built by restrainting for 6h/d, 21d.The behavior changes were observed in open field test, the LTP was induced in rat hippocampal dentate gyrus(DG) by high-frequency test stimulation. Results Compared with control group, the content of glucocorticoids in plasma of the rats suffered from restraint stress was significiantly increased; the number of crossing in open-field test was significiantly increased; the changes of amplitude of population spike(PS) were significiantly larger, the induction rate of LTP lower. After zinc supplementation in stressed rats, the indices mentioned above were significiantly improved. Conclusion Opportune supplementation of zinc can alleviate stress-induced impairment of the brain function under stress.
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