Objective To investigate the function of serum and bile leptin in the formation of gallstones.Methods Patients were divided into two groups:gallbladder cholesterol gallstone group (group A,n =58) and non-gallstone group (group B,n =33).With a body mass index of 24 kg/m2 for the standard,the group A was also divided into the group A1 (body mass index ≥24 kg/m2,n =30) and group A2 (body mass index ＜ 24 kg/m2,n =28).Group B was divided into group B1 (body mass index≥24 kg/m2,n =18) and group B2 (body mass index ＜24 kg/m2,n =15).Fasting blood samples from all study participants were assayed for total bile acid,total cholesterol,triglyceride,low density lipoprotein,high density lipoprotein,apolipoprotein AI,apolipoprotein B,lipoprotein (a).Serum leptin and bile leptin were measured using an enzyme-linked immunosorbent assay.Results A total of 58 patients with gallbladder cholesterol gallstone and 33 controls were included in the study.The serum level of leptin,total cholesterol,low density lipoprotein,apolipoprotein B and triglyceride were significantly increased,high density lipoprotein and apolipoprotein AI significantly decreased in patients with gallbladder cholesterol gallstone compared with controls(P ＜0.05).While bile leptin,total Bile acid,lipoprotein(a) were no significant difference between group A and group B (P ＞ 0.05).Serum leptin in patients with gallbladder cholesterol gallstone were significantly positively correlated with Body Mass Index(r =0.65,P =0.01),Especially when Body Mass Index ≥ 24 kg/m2 (r =0.73,P ＜ 0.01).Conclusions Changes in levels of serum leptin may affect levels of blood lipid,some lipoprotein and bile leptin,then promote the formation of cholesterol stones.

Objective To investigate the relationship between acute biliary pancreatitis and pancreaticobiliary maljunction and the role of magnetic resonance cholangiopancreatography(MRCP) in evaluation of pancreatico biliary maljunction.Methods To compare the liver function indicators of different groups of acute biliary pancreatitis patients(153 cases) associated with pancreatico biliary maljunction and without pancreatico biliary maljunction before and after the conservative treatment.Results The 32 acute biliary pancreatitis patients with pancreatico biliary maljunction detected by MRCP were compared with the 121 cases without pancreatico biliary maljunction.The ALT,AST,GGT after conservative treatment in both group of pancreatico biliary maljunction and Npancreatico biliary maljunction were significantly decreased (P ＜ 0.05).ALT,AST and GGT of pancreatico biliary maljunction group were higher than that of Npancreatico biliary maljunction group with statistical significance (P ＜ 0.05).Conclusions MRCP as a noninvasive cholangiopancreatography study of pancreatico biliary maljunction is a safe and reliable examination method,pancreatico biliary maljunction is one of the important causes of acute biliary pancreatitis.

Gallstone is one of the most common diseases in hepatobiliary, cholesterol gallstone is the most common type of gallstone. One of the important causes of gallstone formation is the precipitation of cholesterol crystals caused by cholesterin supersaturation. Scavenger receptor type BI (SR-BI) is a kind of multifunctional membrane receptor protein, which can mediate the selective uptake of cholesterol in liver and then affect the content of cholesterol in bile. Its role in the formation of gallstone has been initially revealed. In this paper, the relationship between the occurrence of cholesterol gallstones and scavenger receptor type B type I was summarized in order to provide new ideas for the further study of the pathogenesis of gallstone.

Objective: To identify the key pathogenic genes of leptin regulating gallbladder contraction and secretion in mice and to reveal the potential molecular mechanism by comprehensive bioinformatics. Methods: The expression profile of GSE3293 was downloaded from Gene Expression Omnibus (GEO) database. The data contained 8 samples, including 4 leptin-treated gallbladder samples and 4 saline-treated gallbladder samples. The most valuable 250 differentially expressed genes (DEGs) were obtained by grouping analysis of GEO online GEO 2 R-TOP 250 software or tools, and further analyzed by bioinformatics. The GO function and KEGG pathway enrichment of DEGs were analyzed by DAVID online software. The protein-protein interaction (PPI) network of DEGs was constructed from STRING database. Results: A total of 250 differentially expressed genes were identified from the GSE3293 dataset, of which 197 genes were up-regulated and 53 genes were down-regulated. GO analysis showed that the biological functions of DEGs were mainly concentrated on MHC class II protein complexes, plasma membrane, extracellular exosome. KEGG pathway analysis showed that these DEGs were mainly involved in tuberculosis, leishmaniasis, cell adhesion molecules, bacteriophages, infection and other signaling pathways. PPI network showed that these DEGs coded proteins interacted strongly, and the first five pairs of DEGs with the strongest correlation were screened out. Conclusions The molecular mechanism of cholelithiasis is predicted from gene level by bioinformatics analysis of function enrichment and PPI of DEGs in mouse gallbladder. However, the function of DEGs still needs a lot of clinical and molecular biological experiments to confirm.