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Erythrocyte Na-K-Cl cotransport activity in low renin essential hypertensive patients. A 23Na nuclear magnetic resonance study.

Abstract：

:The Na-K-Cl cotransport activity in red blood cells from essential hypertensive men with low (n = 8, mean age 42 +/- 4 years) or normal renin activity (n = 4, mean age 43 +/- 3 years), and in normotensive men with normal renin activity (n = 7, mean age 38 +/- 4 years) has been evaluated by means of a recently developed 23Na nuclear magnetic resonance (NMR) method. Sodium efflux was determined by relating the resonating frequency of the NMR signal from extracellular sodium to sodium concentration in the presence of the shift reagent Dy(PPP)2(7-). The maximum Na+ efflux driven by cotransport (Vmax) was measured in Na(+)-loaded erythrocytes in the presence of ouabain to block the Na-K-Cl pump activity. A significant difference (P < 0.05) was found in Vmax values of low renin patients (0.70 mmol/h/L cells, range 0.40 to 0.90 mmol/h/L cells) as compared with normotensive controls (0.39 +/- 0.08 mmol/h/L cells) and normal renin hypertensives (mean 0.49 +/- 0.04 mmol/h/L cells). In conclusion, this study showed an increased activity of the Na-K-Cl cotransport in red blood cells from low renin hypertensive men as compared with normal renin hypertensives and normotensives.

journal_name

Am J Hypertens

journal_title

American journal of hypertension

authors

Cacciafesta M,Ferri C,Carlomagno A,De Angelis C,Scuteri A,Guidoni L,Luciani AM,Rosi A,Viti V,Santucci A

doi

10.1093/ajh/7.2.151

subject

Has Abstract,Author List Incomplete

pub_date

1994-02-01 00:00:00

pages

151-8

issue

2

eissn

0895-7061

issn

1941-7225

pii

0895-7061(94)90090-6

journal_volume

7

pub_type

杂志文章

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