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Protective effect of tumor necrosis factor alpha antibody on experimental necrotizing enterocolitis in the rat.
Seitz, Guido; Warmann, Steven W; Guglielmetti, Andres; Heitmann, Heike; Ruck, Peter; Kreis, Martin E; Fuchs, Jörg.
Affiliation
  • Seitz G; Department of Pediatric Surgery, University Children's Hospital, 72076 Tübingen, Germany. guido.seitz@med.uni-tuebingen.de
J Pediatr Surg ; 40(9): 1440-5, 2005 Sep.
Article in En | MEDLINE | ID: mdl-16150346
BACKGROUND: Necrotizing enterocolitis (NEC) is a common and devastating disorder of premature infants. Elevated proinflammatory cytokines, especially tumor necrosis factor alpha (TNF-alpha), have been implicated in the pathogenesis of NEC. The aim of this study was to evaluate the effects of TNF-alpha on the inflammatory response in NEC by immunoneutralizing TNF-alpha with a selective antibody. METHODS: Neonatal Sprague-Dawley rats were divided in 3 groups: group 1 (n = 20), a NEC-like enterocolitis was induced by formula feeding, asphyxia, and cold exposure; group 2 (n = 9), animals were treated like in group 1 and additionally received TNF-alpha antibody intraperitoneally; and group 3 (n = 17), animals were dam-fed (controls). Animals were killed in case of imminent death or after 96 hours. Specimens from small bowel were processed for blinded histologic (H&E) and immunhistologic (myeloperoxidase [MPO]) analysis. RESULTS: In group 1, animals developed severe NEC (mean NEC score, 3.28 +/- 0.32; mean MPO, 65.85 +/- 9.46). In group 2, animals developed mild NEC (mean NEC score, 1.72 +/- 0.41; mean MPO, 34.33 +/- 9.69; P < .05). In group 3, no NEC was induced (mean NEC score, 0.0 +/- 0; mean MPO, 6 +/- 1.32; P < .05). CONCLUSION: Tumor necrosis factor alpha antibody may have an attenuating effect on experimental NEC in rats.
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Collection: 01-internacional Database: MEDLINE Main subject: Tumor Necrosis Factor-alpha / Enterocolitis, Necrotizing Type of study: Prognostic_studies Limits: Animals Language: En Journal: J Pediatr Surg Year: 2005 Document type: Article Affiliation country: Germany Country of publication: United States
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Collection: 01-internacional Database: MEDLINE Main subject: Tumor Necrosis Factor-alpha / Enterocolitis, Necrotizing Type of study: Prognostic_studies Limits: Animals Language: En Journal: J Pediatr Surg Year: 2005 Document type: Article Affiliation country: Germany Country of publication: United States