alexa Role of TNF-alpha in gut mucosal changes after severe burn.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Spies M, Chappell VL, Dasu MR, Herndon DN, Thompson JC, , Spies M, Chappell VL, Dasu MR, Herndon DN, Thompson JC,

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Abstract Gut epithelial cell death by apoptosis is increased in the gut epithelium after severe burn associated with mucosal atrophy. We hypothesized that tumor necrosis factor (TNF)-alpha-TNF receptor (TNFR) interaction activates apoptosis in small bowel mucosal cells after severe burn. C57BL6 mice received a 30\% total body surface area scald burn and were treated with neutralizing anti-TNF-alpha. The proximal small bowel was assessed for mucosal atrophy. Proliferation and apoptosis of mucosal cells were assessed by proliferative cell nuclear antigen-immunostaining and terminal deoxyuridine nick-end labeling assay, respectively. Mucosal height and mucosal cell number decreased after burn. Anti-TNF-alpha-treated mice showed significantly less mucosal atrophy. Proliferation of intestinal cells was not changed with burn or anti-TNF-alpha treatment. An over threefold increase in apoptotic cell number was seen after burn, which was diminished by anti-TNF-alpha treatment. Changes in gut mucosal homeostasis after severe burn are affected, in part, by the activation of apoptosis by TNF-alpha-TNFR interaction. This article was published in Am J Physiol Gastrointest Liver Physiol and referenced in Journal of Cancer Science & Therapy

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