Chapter category: Atherosclerosis
Antigen Recognition by gd T–Cells:
Edited by: Ming K. Heng
ISBN:
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Chapter authors:
Ming K. Heng and Madalene C.Y. Heng
Activated T lymphocytes are an integral part of atherosclerotic plaques, and recent observations suggest that they play a role in the inflammatory response in atherogenesis (Gown et al 1986; Jonasson et al 1986; Emeson and Robertson, 1988; van der Wal et al 1989; Hansson and Holm, 1989, Ross 1993). Both ab and gd T–cells have been identified among the CD3+ T–cells, which make up the T–cell component of the infiltrate in atherosclerotic plaques. Although sparse in numbers among the inflammatory infiltrate in atherosclerotic arteries, the gd T–cell is, nevertheless, enriched in injured arteries and early atherosclerotic lesions, and may play a role in the early stages of atherogenesis (Kleindienst et al 1993; Xu et al, 1993; Heng et al, 1994). This Chapter summarizes current knowledge concerning the immune function of this interesting and potentially important lineage of Tlymphocytes, focusing on structure of the TCR g and d chains, the antigens recognized by gd T–cells, as well as mechanisms of antigen recognition. Since gd T–cells are enriched in atherosclerotic arteries, and antigen–T–cell receptor interactions initiate T cell–mediated immune responses, consideration of cognate gd T–cell antigens may be the means of identifying potential triggers of atherogenesis.
Additional chapters from this book:
Mechanisms of T Lymphocyte Activation: Role in Atherogenesis
Ming K. Heng and Madalene C.Y. Heng
Activated T lymphocytes are believed to play regulatory roles in the pathogenesis of atherosclerosis. Significant numbers of activated T lymphocytes, colocalized with macrophages, are present ...
Antigen Recognition by gd T–Cells:
Ming K. Heng and Madalene C.Y. Heng
Activated T lymphocytes are an integral part of atherosclerotic plaques, and recent observations suggest that they play a role in the inflammatory response in atherogenesis (Gown et...
Antigen Recognition by gd T–Cells:
Ming K. Heng and Madalene C.Y. Heng
Activated T lymphocytes are an integral part of atherosclerotic plaques, and recent observations suggest that they play a role in the inflammatory response in atherogenesis (Gown et...
Mechanisms of T Lymphocyte Activation: Role in Atherogenesis
Ming K. Heng and Madalene C.Y. Heng
Activated T lymphocytes are believed to play regulatory roles in the pathogenesis of atherosclerosis. Significant numbers of activated T lymphocytes, colocalized with macrophages, are present ...
The Activated Macrophage: Role in Atherogenesis
Ming K. Heng and Madalene C.Y. Heng
Macrophages are found in lesions of atherosclerosis at all stages of lesion development, where they are best known for their ability to accumulate lipids, forming foam cells in atherosclerotic...
Homing Mechanisms of Lymphocytes: Role of Adhesion Molecules and
Ming K. Heng and Madalene C.Y. Heng
The recruitment of activatedTlymphocytes in early lesions of atherosclerosis supports the concept that these cells are involved in atherogenesis (Tsukada et al, 1986; Munro et al 1987; Xu et a...
Cytokine Activated Target Cells in Atherogenesis: The Vascular
Ming K. Heng and Madalene C.Y. Heng
Proliferation of vascular smooth muscle cells is an integral component of the thickened intima in atherosclerotic and restenotic arteries (Schwartz and Ross, 1984; Gordon et al, 1990; O'Brien ...
Cytokine–Activated Target Cells in Atherogenesis: The Endothelial
Ming K. Heng and Madalene C.Y. Heng
Cell–mediated immunity involving activated lymphocytes and macrophages is believed to play a significant role in atherogenesis. A variety of cytokines secreted by both activated lymphocyt...
Cytokines and Growth Factors in Receptor–Mediated Signaling
Ming K. Heng and Madalene C.Y. Heng
Smooth muscle cells constitute up to 60–80% of the cellular population within the arterial intima in atherosclerotic plaques and restenotic lesions (Schwartz and Reidy 1987; Khochi et al,...
Immune Mechanisms in Acute Coronary Ischemic Syndromes
Ming K. Heng and Madalene C.Y. Heng
In recent years, the concept that atherosclerosis has many patho–physiologic characteristics of a chronic inflammatory process has lead to a reappraisal of the mechanisms of the acute cor...
Evidence for Immune Involvement in Atherogenesis
Ming K. Heng and Madalene C.Y. Heng
Much of the evidence for the hypothesis that atherogenesis represents an inflammatory response to arterial injury was derived from pathologic and recently, immunohistochemical, studies. It has...
Basic Concepts in Atherogenesis, Immunology and Wound Repair
Ming K. Heng and Madalene C.Y. Heng
Although understanding of the cellular and molecular mechanismsof atherogenesis has greatly accelerated over the last decade, surprising modern concepts of its basic pathophysiology have exist...
