NaOH-induced Crohn's colitis in rats: a novel experimental model.

Abstract:

AIM:Several models of experimental ulcerative colitis have been previously reported. To date, only one model of Crohn's colitis that was induced by trinitrobenzene sulfonic acid has been described. MATERIALS AND METHODS:Twenty-one male albino rats were divided into three groups: group I: sham control group (n = 7), group II: acetic acid group (n = 7), group III: NaOH group (n = 7). On the day of induction, all rats were lightly anesthetized with intramuscular ketamine (8 mg/kg). A 6F plastic catheter was inserted rectally until the tip was 5 cm proximal to the anus. Then, 2 ml of 0.9% saline, 2 ml of 4% acetic acid, and 2 ml of 6.25% NaOH was administered to groups I, II, and III, respectively. All rats were sacrificed 5 days after colitis induction. The distal colon segment was assessed macroscopically and microscopically. In addition, malondialdehyde (MDA) and nitric oxide (NO) levels of the colonic tissue and changes in body weight were measured. RESULTS:Macroscopic and microscopic examinations of colonic tissue samples showed morphological similarities to human Crohn's disease (CD). The MDA and NO levels of the colonic tissues were significantly higher in the NaOH group compared to the acetic acid and sham control groups (P = 0.001). CONCLUSION:NaOH may be used to induce Crohn's colitis as an experimental model.

journal_name

Dig Dis Sci

authors

Koçak E,Köklü S,Akbal E,Taş A,Karaca G,Astarcı MH,Güven B,Can M

doi

10.1007/s10620-011-1697-8

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

2833-7

issue

10

eissn

0163-2116

issn

1573-2568

journal_volume

56

pub_type

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