But yohimbine could not antagonize the central hypotensive action of GABA, while picrotoxin could entirely block it.
但是育亨宾不能阻断侧脑室注射GABA的中枢降压作用，而苦味毒则能完全阻断其降压效应。
2
Pretreatment of either isoniazid, an aminoacid decarboxylase inhibitor, or GABA receptor antagonist picrotoxin prevented thedepressant effect of diazepam on the amplitude of phrenic discharge.
It was found that the antagonist picrotoxin was unable to block the liver fluke to the excitatory effect of GABA, while it could partially block the roundworm to the inhibitory effect of GABA.