Inflammation and immune response in acute aortic dissection
- 23 September 2010
- journal article
- research article
- Published by Taylor & Francis Ltd in Annals of Medicine
- Vol. 42 (8), 622-629
- https://doi.org/10.3109/07853890.2010.518156
Abstract
Objective. The aim of our study was to evaluate the lymphocyte subpopulations and the cytokines in the peripheral blood of patients with type-A Stanford acute aortic dissection (AAD group) and to determine whether inflammatory cells are present at the site of aortic dissection. Methods. Thirty-five consecutive patients with type-A Stanford dissection were evaluated for haemochrome and lymphocyte subpopulations (CD3+, CD4+, CD8+, CD19+, CD4+CD25+, CD16+CD56+, CD4+CD28-, CD8+CD28-) by flow cytometry. C-reactive protein (CRP), tumour necrosis factor (TNF)-alpha, interleukin (IL)-2, IL-4, IL-6, IL-8, IL-10, interferon-gamma (IFN-gamma), and monocyte chemoattractant protein (MCP)-1 were measured by ELISA. In addition, immunohistochemical staining with cell type-specific antibodies was performed to study the inflammatory cells detected inside the aortic wall. Results. In the AAD group, a significant increase in natural killer (NK) (P = 0.032), B cells (P = 0.022), and CD8+CD28- (P = 0.045) subpopulations was observed, whereas there was a significant decrease in total T lymphocytes (P = 0.004) and T helper fractions (P = 0.005). Moreover, a significant increase in CRP (P < 0.0001), IL-6 (P < 0.0001), IL-8 (P < 0.0001), IL-10 (P < 0.0001), TNF-alpha (P < 0.0001), and MCP-1 (P < 0.001) was observed; macrophages represented the main population detected inside the media. Conclusions. Our results strongly support the hypothesis of a pivotal role of innate immunity in type-A Stanford AADKeywords
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