RXFP3 and Barrett esophagus: Moreover, earlier reports using different experimental models of BE (Lenglos et al., 2013; Calvez et al., 2016b) have shown that RLN3 expression in the NI and RXFP3 expression in the PVN and SON are elevated in BE female rats, indicating the involvement of RLN3 actions in the nonhomeostatic intake of HPF.