Leukotriene Receptors: Crucial Components in Vascular Inflammation

The accumulation of immune cells during vascular inflammation leads to formation of leukotrienes (LTs). While macrophages represent a major source of LT biosynthesis in the proximity of the vascular wall, activated T lymphocytes may, in addition, play a key regulatory role on macrophage expression o...

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Main Author: Magnus Bäck
Format: Article
Language:English
Published: Wiley 2007-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/tsw.2007.187
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author Magnus Bäck
author_facet Magnus Bäck
author_sort Magnus Bäck
collection DOAJ
description The accumulation of immune cells during vascular inflammation leads to formation of leukotrienes (LTs). While macrophages represent a major source of LT biosynthesis in the proximity of the vascular wall, activated T lymphocytes may, in addition, play a key regulatory role on macrophage expression of LT-forming enzymes. Within the vascular wall, LTs activate cell surface receptors of the BLT and CysLT subtypes expressed on vascular smooth muscle and endothelial cells. The LT receptor expression on those cells is highly dependent on transcriptional regulation by pro- and anti-inflammatory mediators. LT receptor activation on vascular smooth muscle cells is associated with both directly and indirectly induced vasoconstriction, as well as intimal hyperplasia through stimulation of migration and proliferation. On the other hand, endothelial LT receptors induce vasorelaxation and leukocyte recruitment and adhesion. Results from in vitro and in vivo studies of LT receptor antagonists indicate potential beneficial effects in atherosclerosis and other inflammatory cardiovascular diseases.
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spelling doaj-art-91aec00b88b94e08bb71309d974e4eeb2025-08-20T02:10:09ZengWileyThe Scientific World Journal1537-744X2007-01-0171422143910.1100/tsw.2007.187Leukotriene Receptors: Crucial Components in Vascular InflammationMagnus Bäck0Department of Cardiology Center for Molecular Medicine, Karolinska University Hospital, L8:03, 171 76 Stockholm, SwedenThe accumulation of immune cells during vascular inflammation leads to formation of leukotrienes (LTs). While macrophages represent a major source of LT biosynthesis in the proximity of the vascular wall, activated T lymphocytes may, in addition, play a key regulatory role on macrophage expression of LT-forming enzymes. Within the vascular wall, LTs activate cell surface receptors of the BLT and CysLT subtypes expressed on vascular smooth muscle and endothelial cells. The LT receptor expression on those cells is highly dependent on transcriptional regulation by pro- and anti-inflammatory mediators. LT receptor activation on vascular smooth muscle cells is associated with both directly and indirectly induced vasoconstriction, as well as intimal hyperplasia through stimulation of migration and proliferation. On the other hand, endothelial LT receptors induce vasorelaxation and leukocyte recruitment and adhesion. Results from in vitro and in vivo studies of LT receptor antagonists indicate potential beneficial effects in atherosclerosis and other inflammatory cardiovascular diseases.http://dx.doi.org/10.1100/tsw.2007.187
spellingShingle Magnus Bäck
Leukotriene Receptors: Crucial Components in Vascular Inflammation
The Scientific World Journal
title Leukotriene Receptors: Crucial Components in Vascular Inflammation
title_full Leukotriene Receptors: Crucial Components in Vascular Inflammation
title_fullStr Leukotriene Receptors: Crucial Components in Vascular Inflammation
title_full_unstemmed Leukotriene Receptors: Crucial Components in Vascular Inflammation
title_short Leukotriene Receptors: Crucial Components in Vascular Inflammation
title_sort leukotriene receptors crucial components in vascular inflammation
url http://dx.doi.org/10.1100/tsw.2007.187
work_keys_str_mv AT magnusback leukotrienereceptorscrucialcomponentsinvascularinflammation