PMID: 7968237Jan 1, 1994Paper

Alterations of membrane properties in erythrocytes of salt hypertensive Sabra rats

Life Sciences
M G PernolletM A Devynck

Abstract

This study was designed to investigate the effects of a hypertensive stimulus, high salt intake, in hypertension-prone (SBH) and -resistant (SBN) Sabra rats on erythrocyte Na+ content (Na+i), Ca2+ influx and cytosolic Ca2+ concentration ([Ca2+]i). The relationships of these parameters to plasma lipids, circulating digoxin-like immunoreactivity and membrane microviscosity, determined by the fluorescence anisotropy of trimethylamino-diphenylhexatriene (TMA-DPH) and diphenylhexatriene (DPH), were also evaluated. Erythrocytes of SBH rats were characterized by increased [Ca2+]i, unchanged Ca2+ influx and reduced Na+i. There were no significant differences in the plasma digoxin-like immunoreactivity between the two strains. High-salt intake decreased membrane microviscosity (DPH anisotropy) in SBH rats but did not alter the above parameters. Erythrocyte [Ca2+]i correlated positively with diastolic blood pressure and negatively with erythrocyte Na+i. Membrane dynamics evaluated by the two fluorescent probes did not correlate with [Ca2+]i, Ca2+ influx or Na+i whereas DPH anisotropy was inversely related to blood pressure. These relationships were independent of plasma cholesterol or triglycerides. It can be concluded that 1) similarly ...Continue Reading

References

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Citations

Dec 16, 2005·Nature·Napoleone Ferrara, Robert S Kerbel
Jan 19, 2016·Nature Reviews. Drug Discovery·Napoleone Ferrara, Anthony P Adamis
Jun 25, 2010·Nature Reviews. Cancer·Alicia S ChungNapoleone Ferrara
Oct 14, 2008·American Journal of Physiology. Heart and Circulatory Physiology·Silvia M ArribasAleksander Hinek
Nov 15, 2000·American Journal of Hypertension·A McLauren DorranceR Fraser
Aug 1, 2012·Physiological Research·J ZichaJ Kuneš

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