“…In the cardiovascular system, apelin/APJ can reduce blood pressure, promote the formation of new blood vessels, and reduce arterial tension and the heart preload (Yu et al, ). In addition, apelin/APJ can regulate GI function and insulin sensitivity, promote cell proliferation and migration, induce angiogenesis, maintain cardiovascular homeostasis, regulate immune function, and even protect retinal neuronal cells (Adam et al, ; Castan‐Laurell et al, ; Chun et al, ; Ishimaru et al, ; Kostopoulos, Spiroglou, Varakis, Apostolakis, & Papadaki, ; D. Lv et al, ; Tiani et al, ; G. Wang et al, ; Q. Zhou, Cao, & Chen, ). Much research has shown that apelin may play a role in body fluid homeostasis, including water and food consumption, as well as energy metabolism (Cao, Li, & Chen, ; L. Guo et al, ; Najafipour, Soltani Hekmat, Nekooian, & Esmaeili‐Mahani, ; Taheri et al, ).…”