心房利钠利尿肽原(pro-atrial natriuretic peptide,proANP)在蛋白水解酶corin的作用下分解为众多小分子片段,包括氨基端前体片段(NT-proANP)、长效利钠利尿肽(long-acting natriuretic peptide,LANP)、血管舒张肽(vessel dilator)、利钾利尿肽(kaliuretic peptide,KP)、尿舒血管素(urodilatin)和羧基端的心房利钠利尿肽(atrial natriuretic peptide,ANP)等。近年发现这些活性片段不仅各自具有相对独立的生物学效应,而且相互作用,形成复杂的调节网络,在机体稳态维持中具有重要的生理和病理生理意义。
The pro-atrial natriuretic peptide (pro-ANP) is degraded to multiple fragments by proteinase "corin", including N-terminal pro-ANP( 1-98 ), long-acting natr/uretic peptide ( 1-30), vessel dilator ( 31-67 ), kaliuretic peptide ( 79-98 ), atria natriuretic peptide ( 99-126 ), urodilation ( 95- 126) and so on. These bioactive fragments not only display independent individual biological activities, but also interact with each other to form a complex regulation network. This regulatory network plays an important role in homeostasis of organism.