The colitis model mice exhibited the opposite results, in which the highest concentrations were observed for ET-1 (19.21 ± 1.02 pg/mL) and SP (63.02 ± 2.19 pg/mL), and the lowest concentrations were found for SS (22.47 ± 2.01 pg/mL) and VIP (25.79 ± 1.23 pg/mL). The gene discussed is EDN1; the disease is colitis.