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• W2086911801 abstract "Angiotensins I and II in renal vein blood. The concentrations of active renin (PRC), angiotensin I (AI) and angiotensin II (AII) were measured by radioimmunoassay in blood drawn simultaneously and in triplicate from both renal veins and an artery in each of 17 patients with hypertension, 10 of whom had evidence of renal arterial or parenchymal disease. Plasma concentrations of all three substances were found to be remarkably constant in each of the three samples drawn within 5min from each site in each patient. In the 6 patients who did not have unilateral renal or renovascular disease, concentrations of renin and AI were (±SEM), respectively, 11 ± 3% and 25 (-14 to +144)% higher, whereas AII was 16 ± 6% lower, in renal venous plasma than it was in arterial plasma. In the 8 patients with predominantly unilateral renin secretion, concentrations of AI and AII were consistently higher in venous plasma from the affected kidney than they were from the unaffected kidney, whereas the respective mean concentrations of renin, AI, and AII were 4 ± 4%, 7% (-36 to +32)%, and 35 ± 5% lower in venous plasma from the unaffected kidney than they were in arterial plasma. The ratios of the plasma concentrations of AII to renin were lower in renal venous than they were in arterial plasma. Plasma concentrations of AI were closely and similarly related to PRC at all sites. There were highly significant positive correlations between PRC and AI, PRC and AII, and AI and AII, both in arterial and renal venous plasma (r = 0.79 to 0.86, P Angiotensine I et II dans le sang de la veine renale. Les concentrations de renine active (PRC), d'angiotensine I (AI), et d'angiotensine II (AII) ont ete measurees par radioimmunologie dans le sang preleve simultanement et en triplicata des deux veins renales et d'une artere chez 17 malades atteints d'hypertension arterielle, parmi lesquels 10 avaient des signes d'atteinte renale vasculaire ou parenchymateuse. La concentration plasmatique des trois substances est remarquablement constante dans chacun des trois echantillons obtenus en 5 min, d'un meme vaisseau, chez un meme malade. Chez les 6 malades qui n'avaient pas de nephropathie ou d'anomalie vasculorenale les concentrations de renine et de AI etaient (SEM) respectivement, de 11 ± 3% et 25 (- 14 a + 144)% superieures alors que AII etait inferieure de 16 ± 6% dans le plasma veineux renal par comparaison au plasma arteriel. Chez 8 malades dont la secretion de renine avait une predominance unilaterale les concentrations de AI et AII etaient superieures, dans le plasma veineux du rein lese, a celles du rein intact alors que les concentrations moyennes de renine, de AI et AII etaient de 4 ± 4%, 7 (-36 a + 32)% et 35 ± 5%, respectivement, inferieures dans le plasma veineux du rein intact par comparaison au plasma arteriel. Le rapport de la concentration plasmatique de AII a celle de renine etait inferieur dans le plasma veineux au meme rapport dans le plasma arteriel. Les concentrations plasmatiques de AI et de renine active etaient etroitement liees dans le meme sens, quelle que soit l'origine de l'echantillon. Il existe des correlations positives tres significatives entre PRC et AI, PRC et AII, et AI et AII, aussi bien dans le plasma veineux renal que dans le plasma arteriel (r = 0,79 a 0,86, P" @default.
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• W2086911801 date "1979-03-01" @default.
• W2086911801 modified "2023-10-16" @default.
• W2086911801 title "Angiotensins I and II in renal vein blood" @default.
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• W2086911801 doi "https://doi.org/10.1038/ki.1979.35" @default.
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