Non-surgical animal model of gastroesophageal reflux disease by overeating induced in mice

I. M. Nu-Ri, Byoungjae Kim, Kwang-Yoon Jung, Tae Hoon Kim, Seung Kuk Baek

Research output: Contribution to journalArticlepeer-review


Previous animal models of gastroesophageal reflux disease (GERD) were not physiological and required a variety of surgical procedures. Therefore, the animal model developed by conditions that are similar to the pathogenesis of GERD is necessary. The aim is to establish a non-surgical animal model with GERD caused by overeating induced in mice. To induce mice to overeat, we designed dietary control protocols including repetitive fasting and feeding. The esophageal tissues were evaluated with GERD markers to prove the establishment of a GERD animal model. Mice fasted every other day (group 2) showed more pronounced overeating feature and demonstrated evident changes similar to the macroscopic and microscopic findings of GERD, the expressions of inducible nitric oxide synthase and substance P were stronger. The higher frequency of fasting and overeating could cause GERD effectively. The dietary control can make mice overeat, which elicits the change of lower esophageal mucosa similar to GERD. Thus, the overeating-induced mouse may be used as a GERD mouse model.

Original languageEnglish
Pages (from-to)1208-1214
Number of pages7
JournalJournal of Investigative Medicine
Issue number6
Publication statusPublished - 2021 Aug 1

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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