Relationships between burn size, immunosuppression, and macrophage hyperactivity in a murine model of thermal injury.

Abstract:

:Burn injury induces immune dysfunction and alters numerous physiological parameters. While clinical studies indicate that burn injury size profoundly impacts patient immune status, only limited experimental studies have systematically addressed its impact on immune functional parameters. In the present study, mice were subjected to burn injuries of varying sizes and splenic immune cells (splenocytes and macrophages) were isolated 7 days thereafter. Burn injury suppressed splenic T-cell proliferation in an injury size-dependent manner that correlated with the release of the immunosuppressive mediators PGE(2) and nitric oxide. In addition, a shift towards an immunosuppressive Th-2 cytokine profile and a hyperactive macrophage phenotype (increased release of inflammatory mediators) was observed post-injury, however, this effect was in part independent of burn size. Thus, unlike patient survival data, burn injury-induced changes in immune function do not necessarily correlate with the size of the injury.

journal_name

Cell Immunol

journal_title

Cellular immunology

authors

Alexander M,Chaudry IH,Schwacha MG

doi

10.1016/s0008-8749(03)00024-8

subject

Has Abstract

pub_date

2002-11-01 00:00:00

pages

63-9

issue

1

eissn

0008-8749

issn

1090-2163

pii

S0008874903000248

journal_volume

220

pub_type

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