Abstract

Proton pump inhibitors (PPIs) are highly effective antagonists of gastric acid secretion and are widely used to treat a number of gastroesophageal disorders, including peptic ulcer disease, GERD, and Barrett’s esophagus. PPI-induced elevation in intra-gastric pH and subsequent alterations of gastrointestinal physiology are thought to cause undesired effects on the entire GI tract. Defective intestinal Tight Junction (TJ) barrier is an important pathogenic factor for intestinal inflammation. Claudin-2 is a pore forming TJ protein whose overexpression causes selective increase in TJ permeability to small molecules.

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