摘要
The effect of sex hormones on the biogenesis of brain tubulin has been studied in the ovariectomized middle-aged and ovary-intact old-aged female mouse.The results show the much stronger role estrogen plays in stimulating tubulin synthesis than testosterone. Estradiol increased the contents of brain tubulin by 15%-41%. Estradiol and progesterone together can produce a 23%-49% increase. Maybe this experiment revealed a kind of new action of estrogen, i.e., stimulates brain tubulin syntheses in adult mouse.It is important that the effect of estrogen on stimulating tubulin synthesis takes place after the critical period of brain development. All of these mean that estrogen still plays its role in stimulating tubulin synthesis wile thyroid hormones can't play this kind of role during this time.
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