The possible association between AQP9 in the intestinal epithelium and acute liver injury‑induced intestinal epithelium damage

作者：Tianxin Xiang, Shanfei Ge, Jiangxiong Wen, Junfeng Xie, Lixia Yang, Xiaoping Wu, Na Cheng · 发表于：Molecular Medicine Reports · 年份：2018 · DOI：10.3892/mmr.2018.9542 · 被引用次数：10 · 研究领域：Ion Transport and Channel Regulation、Pancreatitis Pathology and Treatment、Liver Disease and Transplantation

The present study aimed to investigate the expression and function of aquaporin (AQP)9 in the intestinal tract of acute liver injury rat models. A total of 20 Sprague Dawley rats were randomly divided into four groups: Normal control (NC) group and acute liver injury groups (24, 48 and 72 h). Acute liver injury rat models were established using D‑amino galactose, and the serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (Tbil) and albumin were determined using an automatic biochemical analyzer. Proteins levels of myosin light chain kinase (MLCK) in rat intestinal mucosa were investigated via immunohistochemistry. Pathological features were observed using hematoxylin and eosin (H&E) staining. MLCK, AQP9 and claudin‑1 protein expression levels were detected via western blotting. Levels of ALT and AST in acute liver injury rats were revealed to steadily increase between 24 and 48 h time intervals, reaching a peak level at 48 h. Furthermore, TBil levels increased significantly until 72 h. Levels of ALT were revealed to significantly increase until the 48 h time interval, and then steadily decreased until the 72 h time interval. The acute liver injury 72 h group exhibited the greatest levels of MLCK expression among the three acute liver injury groups; however, all three acute liver injury groups exhibited enhanced levels of MLCK expression compared with the NC group. Protein levels of AQP9 and claudin‑1 were enhanced in the NC group...