Relationship between the Apoptosis and Notch-1 Expression in Acute Pancreatitis

• Published in: Journal of Huazhong University of Science and Technology. Medical sciences Vol. 27; no. 1; pp. 48 - 50
• Main Author: 张维康 王春友 杨明 万赤丹
• Format: Journal Article
• Language: English
• Published: China Center of Pancreatic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China 01.02.2007
• Subjects: Acute Disease; Animals; Apoptosis; Blotting, Western; In Situ Nick-End Labeling; Male; Pancreatitis - chemically induced; Pancreatitis - metabolism; Pancreatitis - pathology; Rats; Rats, Sprague-Dawley; Receptor, Notch1 - metabolism; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger - metabolism; Taurocholic Acid - toxicity; Time Factors; 基因表达; 急性胰腺炎; 病理机制; 细胞凋亡; apoptosis; Notch- 1; acute pancreatitis
• ISSN: 1672-0733; 1993-1352
• DOI: 10.1007/s11596-007-0114-1

In order to investigate the expression of Notch-1 in rats with acute pancreatitis （AP） and its relation with apoptosis of pancreatic cells, mild AP （MAP） and severe AP （SAP） models were established by retrograde injection of different concentrations of sodium taurocholae into pancreatic duct. The apoptosis index and the expression of Notch-1 protein and mRNA were detected by using TUNEL, Western blot and real-time PCR in MAP and SAP at different time intervals. The results showed that in MAP group the apoptosis index was significantly elevated during 4 to 24 h after induction of pancreatitis, but there was no significant difference among different time intervals. In SAP group, the apoptosis index reached the peak at 4th h after induction of pancreatitis, then gradually declined. There was significant difference in apoptosis index between MAP and SAP groups. Starting from 4th after induction of pancreatitis, the expression of Notch-1 in both MAP and SAP group was increased at different time intervals, but that in SAP group was significantly higher than in MAP group （P〈0.05）. The expression of Notch in MAP and SAP groups reached the peak at 12th and 8th h respectively after induction of pancreatitis. It was concluded that there was significant difference in apoptosis index and the Notch-1 expression in different types of AE The overexpression of Notch-1 could aggravate AP by inhibiting the apoptosis of pancreatic cells.