Effect of a diet rich in linseed oil on complex viscosity and blood pressure in spontaneously hypertensive rats (SHR) |
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Authors: | Dipl-Phys B Dierberger M Schäch I Anadere M Brändle R Jacob |
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Institution: | (1) Present address: Physiologisches Institut II, Universität Tübingen, Gmelinstr. 5, 7400 Tübingen 1;(2) Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik, Stuttgart |
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Abstract: | Summary The influence of a diet rich in linseed oil (10 % in weight) with a content of 61.2 % of -linolenic fatty acid on blood pressure and complex blood viscosity was investigated in spontaneously hypertensive rats. A decrease in blood pressure by 59 mm Hg was found compared to the age-matched, untreated control group. The viscous (![eegr](/content/7nv5261pg8323385/xxlarge951.gif) ) and elastic (![eegr](/content/7nv5261pg8323385/xxlarge951.gif) ) components of viscosity were also reduced at various shear rates (
). The same applies to the aggregation index, which is a measure of the aggregation tendency of red blood cells (RBC).Of course, the effects on blood viscosity cannot explain the observed degree of blood-pressure lowering. Nevertheless, a decrease in the viscosity can improve the flow conditions in the microcirculation, which may lead to a better oxygen supply.Supported by the Alfred-Teufel-Stiftung.This study is part of the unpublished doctoral thesis of M. Schäch |
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Keywords: | spontaneously hypertensive rats linseed oil blood pressure complexblood viscosity red blood cellaggregation |
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