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J Pediatr Surg. 2008 Feb;43(2):308-14. doi: 10.1016/j.jpedsurg.2007.10.022.

Captopril reduces the severity of bowel damage in a neonatal rat model of necrotizing enterocolitis.

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1
Department of Paediatric Surgery, Institute of Child Health, WC1N 1EH London, UK.

Abstract

BACKGROUND/PURPOSE:

Selective mesenteric ischemia may result from activation of the renin-angiotensin system during periods of shock and is implicated in the pathogenesis of neonatal necrotizing enterocolitis (NEC). We investigated the effectiveness of captopril, an angiotensin-converting enzyme inhibitor, in reducing the severity of bowel damage in a neonatal rat model of NEC.

METHODS:

Necrotizing enterocolitis was induced by a combination of gavage feeding of hypertonic formula, hypoxia, and oral lipopolysaccharide (LPS). Rats were randomly divided into 3 groups: group A, control (breast fed; n = 20); group B, NEC (gavage/hypoxia/LPS; n = 31); group C, NEC with captopril 20 mg/kg per dose with the formula for 4 days (gavage/hypoxia/LPS/captopril; n = 35). Pups were killed after 4 days. Incidence of NEC was evaluated microscopically.

RESULTS:

Severity of bowel damage was higher in the NEC group compared to controls and was reduced by administration of captopril. Dilatation of the intestinal vasculature was observed in the captopril group. There were no cases of NEC in the controls; the incidence increased to 55% in NEC group and reduced to 29% by captopril.

CONCLUSIONS:

In this model of neonatal NEC, captopril supplementation of formula reduces the severity of intestinal damage and the incidence of NEC, presumably by affecting mesenteric blood flow.

PMID:
18280280
DOI:
10.1016/j.jpedsurg.2007.10.022
[Indexed for MEDLINE]

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