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Published on: December 16, 2017
Comparative Study of Non-invasive Mouse Models of Pancreatitis
Kamatam Swetha1, Mylanayakanahosahalli Chandrashekar Indumathi1, Shiva Siddappa2
1Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore-06, India.
Background And Aims:
Although a relevant animal model is essential for studying human diseases, one has yet to be established for mouse pancreatitis. Early non-invasive models of mouse pancreatitis have serious limitations.
Methods:
In this study, we compared the efficiency, consistency, and reproducibility of inducing pancreatitis in 3 non-invasive mouse models of pancreatitis in Wistar albino mice: (1) L-arginine-induced model (2 intraperitoneal injections of 4 g/kg body weight of L-arginine spaced 1 h apart), (2) caerulein-induced model (6 intraperitoneal injections of 50 µg/kg body weight of caerulein at hourly intervals), and (3) caerulein + LPS (lipopolysaccharide)-induced model (6 intraperitoneal doses of 50 µg/kg body weight of caerulein at hourly intervals, along with an LPS [10 mg/kg body weight] injection immediately after the last caerulein injection).
Results:
Our findings showed that the L-arginine-induced model was inconsistent. The levels of the pancreatic enzymes, amylase and lipase, were higher in the caerulein and caerulein + LPS groups. Histological examination showed tissue destruction in the induced groups, with varying degrees of fibrosis in the caerulein + LPS group.
Conclusions:
The caerulein + LPS model was the most reliable model in Wistar albino mice. Our findings may be useful in helping investigators choose the most appropriate animal model for pancreatitis research.
