Chronic restraint stress in rats suppresses sweet and umami taste responses and lingual expression of T1R3 mRNA

▶ Taste responses were examined electrophysiologically in the rat chorda tympani. ▶ The mRNA expression for T1R3 was studied in the fungiform papillae by RT-PCR. ▶ Responses to sweet and umami tastes were suppressed after chronic restraint stress. ▶ Expression of T1R3 mRNA was reduced in the stress group.