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Circulation. 2002;105:1158-1161

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(Circulation. 2002;105:1158.)
© 2002 American Heart Association, Inc.


Brief Rapid Communications

Expression of Toll-Like Receptors in Human Atherosclerotic Lesions

A Possible Pathway for Plaque Activation

Kristina Edfeldt, MSc; Jesper Swedenborg, MD PhD; Göran K. Hansson, MD PhD; Zhong-qun Yan, MD PhD

From the Center for Molecular Medicine and the Department of Medicine (K.E., G.K.H., Z.-q.Y.) and the Department of Surgery (J.S.), Karolinska Institute, Stockholm, Sweden.

Correspondence to Dr Zhong-qun Yan, CMM L8:03, Karolinska Hospital, SE-17176 Stockholm, Sweden. E-mail Zhong-qun.Yan{at}cmm.ki.se

Background Innate immune reactions against bacteria and viruses have been implicated in the pathogenesis of atherosclerosis. To explore the molecular mechanism by which microbe recognition occurs in the artery wall, we characterized the expression of toll-like receptors (TLRs), a family of pathogen pattern recognition receptors, in atherosclerotic lesions.

Methods and Results Semiquantitative polymerase chain reaction and immunohistochemical analysis demonstrated that of 9 TLRs, the expression of TLR1, TLR2, and TLR4 was markedly enhanced in human atherosclerotic plaques. A considerable proportion of TLR-expressing cells were also activated, as shown by the nuclear translocation of nuclear factor-{kappa}B.

Conclusion Our findings illustrate a repertoire of TLRs associated with inflammatory activation in human atherosclerotic lesions, and they encourage further exploration of innate immunity in the pathogenesis of atherosclerosis.


Key Words: receptors • atherosclerosis • nuclear factor-{kappa}B • immune system




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CirculationHome page
S. C.G. Hollestelle, M. R. de Vries, J. K. van Keulen, A. H. Schoneveld, A. Vink, C. F. Strijder, B. J. van Middelaar, G. Pasterkamp, P. H.A. Quax, and D. P.V. de Kleijn
Toll-Like Receptor 4 Is Involved in Outward Arterial Remodeling
Circulation, January 27, 2004; 109(3): 393 - 398.
[Abstract] [Full Text] [PDF]


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Arterioscler. Thromb. Vasc. Bio.Home page
N. Ameziane, T. Beillat, P. Verpillat, S. Chollet-Martin, M.-C. Aumont, P. Seknadji, M. Lamotte, D. Lebret, V. Ollivier, and D. de Prost
Association of the Toll-Like Receptor 4 Gene Asp299Gly Polymorphism With Acute Coronary Events
Arterioscler Thromb Vasc Biol, December 1, 2003; 23(12): e61 - e64.
[Abstract] [Full Text] [PDF]


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Cardiovasc ResHome page
D. de Kleijn and G. Pasterkamp
Toll-like receptors in cardiovascular diseases
Cardiovasc Res, October 15, 2003; 60(1): 58 - 67.
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Cardiovasc ResHome page
S.-P. Yang, L.-J. Ho, Y.-L. Lin, S.-M. Cheng, T.-P. Tsao, D.-M. Chang, Y.-L. Hsu, C.-Y. Shih, T.-Y. Juan, and J.-H. Lai
Carvedilol, a new antioxidative {beta}-blocker, blocks in vitro human peripheral blood T cell activation by downregulating NF-{kappa}B activity
Cardiovasc Res, September 1, 2003; 59(3): 776 - 787.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
K. A. Walton, X. Hsieh, N. Gharavi, S. Wang, G. Wang, M. Yeh, A. L. Cole, and J. A. Berliner
Receptors Involved in the Oxidized 1-Palmitoyl-2-arachidonoyl-sn-glycero-3-phosphorylcholine-mediated Synthesis of Interleukin-8: A ROLE FOR TOLL-LIKE RECEPTOR 4 AND A GLYCOSYLPHOSPHATIDYLINOSITOL-ANCHORED PROTEIN
J. Biol. Chem., August 8, 2003; 278(32): 29661 - 29666.
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Am. J. Pathol.Home page
G. Pinhal-Enfield, M. Ramanathan, G. Hasko, S. N. Vogel, A. L. Salzman, G.-J. Boons, and S. J. Leibovich
An Angiogenic Switch in Macrophages Involving Synergy between Toll-Like Receptors 2, 4, 7, and 9 and Adenosine A2A Receptors
Am. J. Pathol., August 1, 2003; 163(2): 711 - 721.
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Arterioscler. Thromb. Vasc. Bio.Home page
N. Mackman
How Do Oxidized Phospholipids Inhibit LPS Signaling?
Arterioscler Thromb Vasc Biol, July 1, 2003; 23(7): 1133 - 1136.
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Cardiovasc ResHome page
G.D. Norata, A. Pirillo, E. Callegari, A. Hamsten, A.L. Catapano, and P. Eriksson
Gene expression and intracellular pathways involved in endothelial dysfunction induced by VLDL and oxidised VLDL
Cardiovasc Res, July 1, 2003; 59(1): 169 - 180.
[Abstract] [Full Text] [PDF]


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CirculationHome page
S. M. Boekholdt, W. R.P. Agema, R. J.G. Peters, A. H. Zwinderman, E. E. van der Wall, P. H. Reitsma, J. J.P. Kastelein, and J. W. Jukema
Variants of Toll-Like Receptor 4 Modify the Efficacy of Statin Therapy and the Risk of Cardiovascular Events
Circulation, May 20, 2003; 107(19): 2416 - 2421.
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J. Biol. Chem.Home page
Y. I. Miller, S. Viriyakosol, C. J. Binder, J. R. Feramisco, T. N. Kirkland, and J. L. Witztum
Minimally Modified LDL Binds to CD14, Induces Macrophage Spreading via TLR4/MD-2, and Inhibits Phagocytosis of Apoptotic Cells
J. Biol. Chem., January 10, 2003; 278(3): 1561 - 1568.
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CirculationHome page
A. Vink, A. H. Schoneveld, J. J. van der Meer, B. J. van Middelaar, J. P.G. Sluijter, M. B. Smeets, P. H.A. Quax, S. K. Lim, C. Borst, G. Pasterkamp, et al.
In Vivo Evidence for a Role of Toll-Like Receptor 4 in the Development of Intimal Lesions
Circulation, October 8, 2002; 106(15): 1985 - 1990.
[Abstract] [Full Text] [PDF]


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Arterioscler. Thromb. Vasc. Bio.Home page
Q. Xu
Role of Heat Shock Proteins in Atherosclerosis
Arterioscler Thromb Vasc Biol, October 1, 2002; 22(10): 1547 - 1559.
[Abstract] [Full Text] [PDF]


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Circ. Res.Home page
G. K. Hansson, P. Libby, U. Schonbeck, and Z.-Q. Yan
Innate and Adaptive Immunity in the Pathogenesis of Atherosclerosis
Circ. Res., August 23, 2002; 91(4): 281 - 291.
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