受体脱敏或增敏只涉及受体密度的变化，受体调节有受体数量的调节和受体亲和力的调节，其中受体数量的调节包括受体上调和受体下调。
目前来看，它的作用是上调前列腺素e2(一种帮助头发生长的激素)，同时能够抑制雄激素受体的相关功能，促进和保护了头发毛囊的生长。
Basically what it does is up-regulate PGE2 which AIDS in hair growth, suppresses androgen receptor related functions, promotes maintenance, and significantly improves the functions of hair follicles.
而P_ 4可以通过增加CGRP的释放上调胃内CGRP受体的活性，从而增加肠神经系统对外来刺激的敏感性。
P_4 could increase gut sensitivity by up-regulating the release of CGRP and the activity of CGRP receptor.
在脑方面，补肾益精方不仅能上调大鼠脑组织M受体结合容量，而且又能抑制大鼠脑组织胆碱酯酶活性。
In brain, BSYJR could both up regulate the binding capacity of M receptor and inhibit the activity of cholinesterase.
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