“…Moreover, TRPC1, TRPC3, TRPC5, and TRPC6 were reported to be expressed in sensory neurons [50,51]. Furthermore, TRP channels as well as other channels could underlie [Ca 2+ ] i changes induced by FK506, since some reports indicated that calcineurin inhibitors might modulate [Ca 2+ ] i changes through the interaction with voltage-gated calcium channels, ryanodine receptors and IP 3 receptors (50,51,52,53,54). In this study, we found that FK506induced [Ca 2+ ] i increases were completely abolished when there was no extracellular Ca 2+ (Fig.…”