5-HT synthesized from
tryptophan
tryptophan catalyzed by
TPH to 5 HTP, catalyzed by AADC to 5-HT
PCPA
blocks 5-ht synthesis by inhibiting TPH
kynurenine
ingested tryptophan metabolized to
SSRIs
inactivation of 5-HT, reuptake by 5-HT transporter
VMAT2
blocked by resperine, depletes 5-HT
5HT1A receptor
inhibit adenylyl cyclase to decrease cAMP synthesis, membrane hyper polarization
5HT2A receptor
increases Ca and PKC
5HT1A receptor medicine
anxiety regulating, postsynaptic