The search terms used were "Transient Receptor Potential Channels", "TRP channels", "TRPV1", "TRPA1", "TRPV4", "TRPV2", "TRPM2", "TRPM3", "TRPM7", "TRPM8", "TRPC3", "colitis", "inflammatory bowel disease", "IBD", "ulcerative colitis", "Crohn Disease". Here, TRPA1 is linked to ulcerative colitis.