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  • Title: Pressor activity of angiotensin II-(2-7)-hexapeptide in man.
    Author: Kono T, Taniguchi A, Imura H, Oseko F, Khosla MC.
    Journal: Endocrinol Jpn; 1985 Oct; 32(5):767-9. PubMed ID: 3912163.
    Abstract:
    Pressor activity and speed of metabolic degradation of angiotensin II-(2-7)-hexapeptide [ANG-(2-7)] were studied in 5 normal men. When infused iv at a rate of 72 nmol/kg X min for 7 min, ANG-(2-7) caused a very slight but statistically significant increase in blood pressure. Average blood pressure increases at 2, 5 and 7 min were 5/4, 8/10 and 8/9 mmHg, respectively, and the duration of the pressor action after the cessation of the infusion (T) was 5 min on the average. The pressor activity and T of this peptide were much less than or shorter than those of angiotensin II-(1-7)-heptapeptide [ANG-(1-7)] infused previously in the same 5 normal men at a rate of 18 nmol/kg X min, indicating that the pressor activity ratio of both the peptides in man is 1: greater than 7.2 which is similar to that of angiotensin II-(2-8)-heptapeptide (angiotensin III) and Ile5-angiotensin II (Ile5-ANG II) (1: greater than 5) and that the removal of N-terminal aspartic acid from ANG-(1-7) hastens the speed of metabolic degradation of the peptide as from Ile5-ANG II.
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