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This article discusses the role of regulatory T-cells (Tregs) in infectious pancreatic necrosis, a complication of acute pancreatitis. The study found that Treg activation disrupts the barrier function of the duodenum, allowing bacteria to enter the pancreatic necrosis. The researchers focused on the expression of the co-inhibitory molecule Programmed-death 1 (PD-1) on Tregs and found that PD-1 expression correlated with the level of Tregs. They also conducted experiments on mouse models and found that blocking PD-1 reduced the translocation of bacteria into the pancreas. The study suggests that PD-1 blockage could be a potential therapeutic strategy for infectious pancreatic necrosis, but further research is needed. [Extracted from the article]