Survival and cell mediated immunity after burn injury in aged mice

被引:39
作者
Kovacs E.J. [1 ,2 ,3 ,4 ,5 ]
Grabowski K.A. [2 ]
Duffner L.A. [2 ]
Plackett T.P. [2 ]
Gregory M.S. [2 ,6 ]
机构
[1] Immunology and Aging Program, Loyola University Chicago, Maywood, IL
[2] Department of Anatomy, Loyola University Chicago, Maywood, IL
[3] Burn and Shock Trauma Institute, Loyola University Chicago, Maywood, IL
[4] Department of Surgery, Loyola University Chicago, Maywood, IL
[5] Department of Anatomy, Loyola University Chicago, Stritch School of Medicine, Maywood, IL 60153
[6] Schepens Eye Research Institute, Boston, MA 02114
基金
美国国家卫生研究院;
关键词
Immune Response; Young Adult; Healthy Individual; Aged Individual; Adult Mouse;
D O I
10.1007/s11357-002-0001-4
中图分类号
学科分类号
摘要
The elderly are less able to survive burn injury than young healthy individuals. Regardless of age, burn victims often succumb to secondary infections rather than the primary injury. Since immune responses diminish with age, it is likely that aged individuals are predisposed to a poor outcome by virtue of their weak immune system. Elevated production of macrophage-derived mediators, including interleukin-6 (IL-6), may lead to post-injury immunosuppression in young adults. Healthy aged individuals produce high circulating levels of these mediators; therefore, the combination of the age and burn trauma could further suppress immune responses and contribute to the rapid demise of aged burn patients. Herein, the effects of age and burn trauma using a murine scald injury model were examined. After injury, aged mice are less likely to survive, are unable to mount immune responses, and produce more IL-6 when compared to young adult mice given the same size injuries. Enhancing our understanding of the mechanisms responsible for regulating cell-mediated immune responses after injury could lead to the development of therapies designed to treat aged burn patients.
引用
收藏
页码:3 / 9
页数:6
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