Erythrocyte Cation Cotransport and Countertransport in Essential Hypertension
作者:
JAMES WILEY,
DEBRA CLARKE,
LEONARD BONACQUISTO,
JOHN SCARLETT,
STEPHEN HARRAP,
AUSTIN DOYLE,
期刊:
Hypertension
(OVID Available online 1984)
卷期:
Volume 6,
issue 3
页码: 360-368
ISSN:0194-911X
年代: 1984
出版商: OVID
关键词: essential hypertension;erythrocyte cation transport;cotransport;countertransport
数据来源: OVID
摘要:
We studied erythrocyte cation cotransport and countertransport systems in 21 and 27 patients with essential hypertension, respectively, all of whom were under 50 years of age, had a diastolic blood pressure level greater than 100 mm Hg, and had a family history of hypertension. The following parameters were normal in nearly all patients: total erythrocyte Na+and K+concentrations, the maximal rate (Vmax) of inward cotransport, the affinity of cotransport with Rb+as the substrate, the net outward cotransport of Na+ions, the passive “leak” influx of Rb+and the maximal rate of Li+-Na+countertransport. Only four patients gave clearly abnormal results; in two the maximal rate of both cotransport and countertransport was double the normal values, while another two patients demonstrated a greater than twofold increase in passive “leak” influx to Rb+ions. Most of the patients with moderate to severe essential hypertension in this Australian study were characterized by normal erythrocyte cation fluxes, but a few showed elevation of both cotransport and countertransport of cations.
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