A canine model of gastroesophageal reflux disease (GERD)

Progress in development of animal models of gastroesophageal reflux disease

Gastroesophageal reflux disease is a clinically common refractory chronic disease of the digestive tract, with elusive pathogenesis and poor clinical curative effect. Scholars have developed various animal models to study this disease, and the animal models are prepared mainly by changing gastrointestinal tract anatomy to induce reflux esophagitis or by exogenously pouring acid to induce esophagitis. The former includes damage to the lower esophageal sphincter, pyloric ligation of the duodenum, anastomosis of the esophagus with the duodenum or lower esophagus jejunum, and mechanical expansion. Various preparation methods can induce different degrees of esophageal lesions, but each has its disadvantages in the actual research. The development of animal models should be based on the experimental purposes and requirements to choose suitable animals and reasonable operation, and take effective measures so as to prevent postoperative complications and lower mortality, improve the utilization rate, and prepare ideal animal models to meet the needs of research.