期刊
BRAIN BEHAVIOR AND IMMUNITY
卷 50, 期 -, 页码 47-51出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbi.2015.06.011
关键词
Stress; Wound healing; Langerhans; HLA; Macrophages; Leukocytes; Activation; Immune
资金
- Maurice and Phyllis Paykel Trust
- University of Auckland Faculty Research Development Fund
- University of Auckland Performance-Based Research Fund
- University of Auckland School of Medicine Foundation
Higher psychological stress is associated with slower dermal wound healing, but the immunological mechanisms behind this effect are only partially understood. This paper aims to investigate whether immune cells present in the skin prior to wounding can affect subsequent healing in high-stress and low-stress participants. Two studies are presented in which skin biopsies were analysed using immunohistochemistry for numbers of macrophages and Langerhans cells, and immune cell activation (Study 2 only). Immune cells were related to perceived stress levels and subsequent healing. Study 1 included 19 healthy older adults and showed that higher stress was associated with significantly fewer macrophages in the skin. Study 2 included 22 younger adults and showed that higher stress was associated with significantly lower activation of immune cells in the skin. Furthermore, lower activation of immune cells (as measured by human leukocyte antigen (HLA expression)) and fewer Langerhans cells were associated with slower healing. Together these studies show the first preliminary evidence that the number and activation of immune cells in the skin prior to wounding are affected by stress and can impact healing. Larger studies are needed to confirm these effects. (C) 2015 Elsevier Inc. All rights reserved.
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