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Glomerular hyperfiltration, high renin, and low-extracellular volume in high blood pressure

Lookup NU author(s): Diane Davies, Dr Rachael Fraser

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Abstract

Abnormal renovascular resistance and glomerular filtration rate are characteristic of established hypertension and may also be involved in its pathogenesis, To determine renal and body fluid correlates of the predisposition to high blood pressure, we examined 100 healthy young adults with high or low blood pressure. Within each group, half had parents with high blood pressures, and half had parents with low blood pressures. Renal function and hemodynamics, body fluid volumes, and relevant hormones and genotypes were measured. Subjects with high personal and parental blood pressures had the highest levels of glomerular filtration rate (P<0.02) and plasma active renin concentration and low levels of exchangeable sodium and plasma volume (P<0.02). High glomerular filtration rate was not associated with differences in urinary kallikrein or prostaglandins. Polymorphisms: of the renin, angiotensin-converting enzyme, and angiotensinogen genes were not associated with differences in glomerular filtration rate or renin. Subjects with high personal, but low parental, blood pressures had low exchangeable sodium and plasma volumes (P<0.02) but normal glomerular filtration rates. In this population, extracellular volume depletion and high renin are correlates of high blood pressure in early adulthood, and glomerular hyperfiltration is a feature of those who also have familial predisposition to high blood pressure.

Publication metadata

Author(s): Harrap SB, Cumming AD, Davies DL, Foy CJW, Fraser R, Kamitani A, Connor JM, Lever AF, Watt GCM

Publication type: Article

Publication status: Published

Journal: Hypertension

Year: 2000

Volume: 35

Issue: 4

Pages: 952-957

ISSN (print): 0194-911X

ISSN (electronic): 1524-4563

Publisher: Lippincott Williams & Wilkins

URL: http://dx.doi.org/10.1161/​01.HYP.35.4.952

DOI: 10.1161/​01.HYP.35.4.952

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