Angiotensin I/II (1-7) amide (H2N-Asp-Arg-Val-Tyr-Ile-His-Pro-amide) is a peptide analog to angiotensin II that is used as a vasopressor in the treatment of certain types of shock and circulatory collapse.
Angiotensin II (Asp-Arg-Val-Tyr-Ile-His-Pro-Phe | His-Leu) is an octapeptide that is converted from Angiotensin I (AI) through the removal of two C-terminal residues by angiotensin-converting enzyme (ACE), primarily by ACE within the lung (but also those present in endothelial and kidney epithelial cells). Ang-(1–7) is an endogenous peptide fragment that can be produced from Ang I or Ang II via endo- or carboxy-peptidases respectively. [1]
Angiotensin I/II (1-7) amide is an amide derivative of angiotensin II that is a powerful vasoconstrictor and vasopressor, and is used in the treatment of certain hypotensive states. Angiotensin I/II (1-7) amide is usually administered by slow intravenous infusion, and sometimes intramuscularly or subcutaneously.
References:
1. Santos et al (2000) Angiotensin-(1-7): an update. Regul.Pept. 91 45.