Active, Inactive and Total Renin Concentrations in Plasma of Hypertensive Patients

Toshikazu Goto, Keishi Abe, Kazuo Tsunoda, Masahide Seino, Minoru Yasujima, Yutaka Imai, Satoru Chiba, Makito Sato, Toshiaki Haruyama, Ken Omata, Ko Sato, Jiro Tajima, Masaya Tanno, Kei Kudo, Kaoru Yoshinaga

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To assess the role of inactive renin in hypertensive patients, active, inactive and total renin concentrations (ARC, IRC and TRC) were measured in 37 patients with hypertension of various etiologies. Inactive renin was activated by trypsin and renin concentration was measured using an excess of sheep substrate. Mean values of ARC, IRC, TRC and active renin ratio (AR ratio = ARC/TRC) were higher in 6 cases of renovascular hypertension, and lower in 6 cases of primary aldosteronism and 1 case of idiopathic hyperaldosteronism, when compared with 59 cases of normal subjects. Between ARC and IRC, a slightly positive correlation was observed. Moreover, between ARC and TRC as well as between ARC and AR ratio, close positive correlations were observed. Exceptionally, in a case of juxtaglomerular cell tumor, AR ratio was low in spite of the extremely high value of ARC. Our data suggest that the increase in circulating active renin is due to both the enhancement of the release of renin from the kidney and the increase in the activation of inactive renin, and vice versa. active renin concentration; inactive renin concentration; total renin concentration; active renin ratio; juxtaglomerular cell tumor.

Original languageEnglish
Pages (from-to)403-411
Number of pages9
Journalthe tohoku journal of experimental medicine
Issue number4
Publication statusPublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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