کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10455053 | 921065 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mobilization of γδ T lymphocytes in response to psychological stress, exercise, and β-agonist infusion
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
ایمونولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mobilization of cytotoxic lymphocytes, such Natural Killer (NK) cells and CD8+ T cells, during stress and exercise is well documented in humans. However, humans have another cytotoxic lymphocyte subset that has not been studied in this context: the Gamma Delta (γδ) T lymphocyte. These cells play key roles in immune processes including the elimination of bacterial infection, wound repair and delayed-type hypersensitivity reactions. The current study investigated the effects of stress, exercise, and β-agonist infusion on the mobilization of γδ T lymphocytes. Three separate studies compared lymphocytosis in response to an acute speech stress task (n = 29), high (85%Wmax) and low (35%Wmax) intensity concentric exercise (n = 11), and isoproterenol infusion at 20 and 40 ng/kg/min (n = 12). Flow cytometric analysis was used to examine lymphocyte subsets. γδ T lymphocytes were mobilized in response to all three tasks in a dose-dependent manner; the extent of mobilization during the speech task correlated with concomitant cardiac activation, and was greater during higher intensity exercise and increased dose of β-agonist infusion. The mobilization of γδ T lymphocytes was greater (in terms of % change from baseline) than that of CD8+ T lymphocytes and less than NK cells. This study is the first to demonstrate that γδ T cells are stress-responsive lymphocytes which are mobilized during psychological stress, exercise, and β-agonist infusion. The mobilization of these versatile cytotoxic cells may provide protection in the context of situations in which antigen exposure is more likely to occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain, Behavior, and Immunity - Volume 23, Issue 6, August 2009, Pages 823-829
Journal: Brain, Behavior, and Immunity - Volume 23, Issue 6, August 2009, Pages 823-829
نویسندگان
Leila H. Anane, Kate M. Edwards, Victoria E. Burns, Mark T. Drayson, Natalie E. Riddell, Jet J.C.S. Veldhuijzen van Zanten, Graham R. Wallace, Paul J. Mills, Jos A. Bosch,