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  • Title: Blood pressure effects of renin inhibition by human renin antiserum in normotensive marmosets.
    Author: Michel JB, Wood J, Hofbauer K, Corvol P, Menard J.
    Journal: Am J Physiol; 1984 Mar; 246(3 Pt 2):F309-16. PubMed ID: 6199985.
    Abstract:
    The effects on blood pressure of an antiserum against pure human kidney renin were studied in conscious and anesthetized (pentobarbital, 24 mg X kg-1 i.p.) small new world monkeys (common marmosets). The antiserum inhibited the enzymatic activity of renin by 50% in a dilution of 1:45,000 in marmoset and 1:50,000 in human plasma. The antiserum (0.2 ml i.v.) decreased blood pressure in conscious marmosets on normal sodium intake by 15 +/- 5 (SD) mmHg and after salt depletion by 31 +/- 13 mmHg. A converting enzyme inhibitor (teprotide, 2 mg X kg-1 i.v.) induced a comparable fall in blood pressure: -16 +/- 10 and -30 +/- 10 mmHg, respectively. Similar effects were observed on blood pressure of anesthetized marmosets. The correlation between pretreatment plasma renin concentration and the maximum fall in blood pressure was significant and identical for the experiments with antiserum and teprotide. These results demonstrate that antisera against human renin can be used for the specific blockade of the renin-angiotensin system in primates. In normotensive marmosets the renin-angiotensin system participates in the maintenance of blood pressure, to a degree depending on the state of sodium balance.
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