BACKGROUND: Severe burn trauma mediates immune dysfunction, infection, and multiple organ dysfunction syndrome. We are investigating the immuno-inflammatory response by characterizing gene expression changes in skeletal muscle after local and distant burn injury. METHODS: Male CD1 mice in three experimental groups, control (unburned), hind limb (local burn), and 30% total body surface area (distant burn), were killed between 6 hours and 10 days postburn; and changes in gastrocnemius muscle global gene expression were assessed using microarrays. RESULTS: The 35 immuno-inflammatory genes are differentially expressed in both models, with an additional 20 and 30 genes specific to distant and local burn, respectively. These genes encode chemokines, oxidative-stress, complement, and defense/immune functions. CONCLUSION: Burn mediates a common systemic response, independent of the site or extent of injury, and also specific responses to local versus distant trauma. A transcriptome profile of genes that initiate and sustain systemic inflammation has been identified.
BACKGROUND: Severe burn trauma mediates immune dysfunction, infection, and multiple organ dysfunction syndrome. We are investigating the immuno-inflammatory response by characterizing gene expression changes in skeletal muscle after local and distant burn injury. METHODS: Male CD1mice in three experimental groups, control (unburned), hind limb (local burn), and 30% total body surface area (distant burn), were killed between 6 hours and 10 days postburn; and changes in gastrocnemius muscle global gene expression were assessed using microarrays. RESULTS: The 35 immuno-inflammatory genes are differentially expressed in both models, with an additional 20 and 30 genes specific to distant and local burn, respectively. These genes encode chemokines, oxidative-stress, complement, and defense/immune functions. CONCLUSION: Burn mediates a common systemic response, independent of the site or extent of injury, and also specific responses to local versus distant trauma. A transcriptome profile of genes that initiate and sustain systemic inflammation has been identified.
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