“In contrast, NDGA significantly inhibited the relaxant response of isoproterenol on 30 microM histamine- and 30 microM acetylcholine-induced contractions, but it did not affect the histamine antagonism by a histamine H1-blocker pyrilamine.”
“ NDGA also inhibited the relaxant response of isoproterenol on the contraction elicited by 30 nM LTC4, but did not affect those of forskolin and aminophylline.”