“Acute pretreatment with increasing doses of physostigmine markedly affected the blood pressure response to L-arginine (i.e., L-arginine-caused hypotension was more pronounced), but only slightly that to L-NAME.”
“In conclusion, L-arginine , as a donor of NO, produced hypotension by itself and also decreased, but not significantly, the central cholinergically-mediated hypertension (CCMH) produced by physostigmine.”
“ L-arginine and L-NAME depressed the pressor responses to physostigmine , if physostigmine was injected after the end of a 1-hr infusion.”