›› 2018, Vol. 45 ›› Issue (5): 1395-1400.doi: 10.16431/j.cnki.1671-7236.2018.05.034

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Establishment of Acute Ulcerative Colitis Model Induced by Acetic Acid in Dog

CHEN Li1,2, XU Zaipin1,2, ZHANG Chenggui2, WU Xiumei2, XU Yulan3, CHEN Guang1, DU Jianbin1   

  1. 1. Department of Animal Medicine, Guizhou University, Guiyang 550025, China;
    2. Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R & D, Dali University, Dali 671000, China;
    3. The Best Animal Hospital, Guiyang 550001, China
  • Received:2017-10-09 Online:2018-05-20 Published:2018-05-19

Abstract:

The study was aimed to establish a stable model of acute ulcerative colitis (UC) in dogs using acetic acid.Sixteen healthy dogs were randomly divided into four groups:Control group and three acetic acid (with different concentrations) groups.After anesthetic Quanmianbao injection,the acetic acid groups was perfused with 4%,7% and 10% 2 mL/kg acetic acid,respectively.The control group was not anesthetized and the rectal perfusion was given the same dose of sterile saline.The defecation and the colorectal mucosa were observed by electronic endoscopy at the 1st,3rd and 7th days after injection.All the experimental dogs were sacrificed on the 7th day.The lesioned tissues were collected and examined by histological.The results showed that:In 4% acetic acid group,short-term dilute feces and mild inflammatory cells infiltration was observed.In 10% acetic acid group,dogs died because of strong inflammation which lead to colon perforation.In 7% acetic acid group,both fecal traits and colon endoscopy check showed significant symptoms of colitis,and ulcer foci formed and droped off after 3 and 7 d of acetic acid administration,respectively.Histological examination showed that there was significant inflammatory cells infiltration around the ulcer foci,and it would significantly reduced as time goes on,and replaced by fibroblast hyperplasia.In conclusion,acute ulcerative colitis in dogs could be successfully induced by 7% acetic acid perfusion.

Key words: acetic acid; dog; ulcerative colitis (UC)

CLC Number: