Figure 4From: 1,8-cineole, a TRPM8 agonist, is a novel natural antagonist of human TRPA1 1,4-cineole activates hTRPM8 and hTRPA1. (A) Molecular structures of menthol, camphor, 1,8-cineole and 1,4-cineole. (B) 1,4-cineole increased fura-2 ratio (340/380 nm) in cells expressing hTRPM8 (n = 35). (C) 1,4-cineole increased fura-2 ratio in cells expressing hTRPA1 (n = 17).Back to article page