Known vasoactive substance blockers could not alter the effect of AHF on BP. These data indicated that the effect of AHF on BP might be mediated via a specific receptor.

• 多种已知的血管活性物质的特异受体拮抗剂只能阻断其相应的血管活性物质对血压的作用，对AHF的降压活性无影响。