Project description:Transcriptomics and network pharmacology reveal the protective effects of chaiqin chengqi decoction on obesity-related alcohol-induced acute pancreatitis: involvement of the antioxidant protein response and downregulation of the PI3K/Akt signaling pathway
Project description:mRNA was isolated from duodenal tissue 3d after induction of acute pancreatitis in C57Bl/6 wild type mice to investigate transcriptional changes, untreated C57Bl/6 refer as controls we used microarrays to investigate the duodenal barrier function during acute pancreatitis
Project description:Transgenic KrasG12D mice can recapitulate pancreas intra-epithelial neoplasia (PanIN). Caerulein is a cholecystokinin analogue and induces acute pancreatitis when injected intra-abdominally. Caerulein-induced acute pancreatitis will accelerate PanIN progression in KrasG12D mice. We compared mRNA profile changes between KrasG12D mice with acute caerulein-induced pancreatitis and wild-type mice without acute pancreatitis. The experiment had two groups. Experiment group: KrasG12D mice with acute caerulein-induced pancreatitis (N=6). Three mice in experiment group received 1-week caerulein injection, and the other three mice received 2-week caerulein injection. All experiment group mice started to receive caerulein injection at 1-month of age, and were sacrificed at the last day of caerulein injection. Control group: wild-type mice without acute pancreatitis (N=6). The mice were sacrificed at 1.5-month of age. Whole pancreas tissue lysate samples were subjected to mRNA array assay.
Project description:Transgenic KrasG12D mice can recapitulate pancreas intra-epithelial neoplasia (PanIN). Caerulein is a cholecystokinin analogue and induces acute pancreatitis when injected intra-abdominally. Caerulein-induced acute pancreatitis will accelerate PanIN progression in KrasG12D mice. We compared mRNA profile changes between KrasG12D mice with acute caerulein-induced pancreatitis and wild-type mice without acute pancreatitis.
Project description:There still is a lack of specific, early markers for acute pancreatitis. We used the gene expression profiling Affimetrix mouse gene 1.0 ST arrays (Affymetrix , Inc. Santa Clara, CA), to cmpare the gene expression between control mice and mice with induced experimental acute pancreatitis, in order to identify new potential biomarkers of acute pancreatitis.
Project description:Purpose: The purpose of this study was to compare the hepatic transcriptome in the control group, acute pancreatitis, and severe acute pancreatitis, in order to identify metabolic gene changes during pancreatitis. Methods: 6-week Balb/c mice were subjected to AP (caerulein), SAP (caerulein and LPS) and control (saline), and mice liver tissues were harvested at 24 hours for RNA preparation (n=8 each group). Results: Among 11952 mapped genes, 8977 differentially expressed genes were identified by RNA-seq, including 351 genes induced in AP compare to Control and 5249 genes down regulated in SAP compare to AP. The genes up regulated were mainly related to fatty acid oxidation and ketone body synthesis especially Cpt2 and Acadvl, while genes that down regulated were associated with energy metabolism and inflammation. The overlap of two gene sets were 96 genes that involved in fatty acid metabolism. Conclusions: Our study revealed that in AP, genes associated with ketone body synthesis are upregulated in liver, in SAP, fatty acid oxidation related genes are downregulated in liver. Our data revealed the crosstalk between pancreas and liver, illustrated the difference of metabolism in AP and SAP.
Project description:We have studied pancreas samples in pancreas from a mouse model of acute pancreatitis, comparing wild-type animals and TRP14 KO animals. Samples are extracted with N-ethylmaleimide to block reduced cysteines, and no reducing agent is used, with a search including cysteinylated peptides. Acute pancreatitis was induced in 12 weeks-old mice (wild-type and KO for TRP14) by seven intraperitoneal injections of cerulein (50 µg/kg body weight) at 1 h intervals. Then, 1 h after the last injection, animals were euthanized under anesthesia with 3% isoflurane, exsanguinated, and the pancreas was immediately removed and processed.
Project description:MicroRNAs in body fluids are becoming interesting markers for disease state. Here we assessed their presence in Mesenteric Lymph to identify candidate biomarkers for pancreatitis using a rat model of the disease. We used Affymetrix microRNA arrays to assess the differences in mesenteric lymph fluid miRNAs in a taurocholate induced rat model of pancreatitis Mesenteric lymph was collected from five biological replicates from control sham operated animals (SHAM), fluid resuscitated taurocholate induced acute pancreatitis (RAP) and non-resuscitated taurocholate induced pancreatitis animals (AP). The latter group represent a more severe form of the disease.
Project description:Foxp3 positive regulatory T-cells were isolated by FACS from spleen of mice with acute pancreatitis induced by partial pancreatic duct ligation, mice without pancreatitis refer as controls we used microarrays to investigate the activation of Tregs during acute pancreatitis