ISSN 0439-755X
CN 11-1911/B

›› 2000, Vol. 32 ›› Issue (03): 292-295.

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THE INVOLVEMENT OF PRENATAL GLUCOCORTICOID SYSTEM ON MEMORY RETENTION OF CHICKS IMPROVED BY LIGHT EXPOSURE

Hu Jiafen; Kuang Peizi; Guan Linchu ;Sui Nan(Institute of Psychology, Chinese Academy of Sciences, Beijing 100101)   

  • Published:2000-09-25 Online:2000-09-25

Abstract: The effect of two kinds of corticosleroids: corticosterone and dexamthesone on memory retention of dark hatched chicks and corticosteroid receptor antagonist RU- 486 and Spironolactone on memory retention improved by light exposure or corticostorone were examined using one-trial passive avoidance model in chicks. It showed that corticosterone and dexamthesone markedly improved memory retention of dark hatched chicks respectively. RU-486 and Spironolactone blocked memory retention improved by light exposure or corticosterone administration in chicks. But the effect of glucocorticoid receptor was specific, however minerocorticoid mainly affected the general state of the chicks. Thus, glucocorticoid and its receptors were involved in effect of light exposure on memory in chicks.

Key words: glucocorticoid, light exposure, memory, chick, embryo, RU-486