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Vascular Medicine
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Endothelium, lipoproteins and atherosclerotic vascular disease

Felix C Tanner

University Hospital, Basel, Switzerland

Marcel R Tschudi

University Hospital, Basel, Switzerland

Thomas F Lüscher

University Hospital, Basel, Switzerland

The endothelium modulates vascular tone by releasing nitric oxide, which is a potent vasodilator and inhibitor of platelet aggregation. Together with prostacyclin, the endogenous nitrate nitric oxide has an important protective role in preventing vasospasm and thrombus formation. In addition, the endothelium is a source of contracting factors such as endothelin-1, thromboxane A2 and endoperoxides. Due to its strategic anatomical position, the endothelium is a primary target for injurious stimuli and cardiovascular risk factors. Low density lipoproteins reduce endothelium-dependent relaxation and enhance endothelium- dependent contraction. The same pattern of endothelial dysfunction occurs in hypercholesterolaemia and atherosclerosis. These alterations of endothelial function may contribute to vasospasm, ischaemia and thrombus formation, which are common events in patients with atherosclerotic vascular disease.

Vascular Medicine, Vol. 2, No. 2, 161-176 (1991)
DOI: 10.1177/1358836X9100200207
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