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Enhanced vigilin and anionic trypsinogen expression in experimental chronic pancreatitis

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Hilgendorf I., Aßmuth K., Sparmann G., Emmrich J., Kruse C.
Open Medicine
|
2007
|
vol. 2
|
issue 2
159-167
EN
The molecular principles that lead to chronic pancreatitis are incompletely understood. Trypsin(ogen) plays a key role in the development of pancreatitis. Since the production of trypsin(ogen) by acinary pancreatic cells is paralleled by the expression of vigilin we hypothesised that vigilin may be involved in the onset of pancreatitis. Vigilin is a ubiquitous protein and has apparently high affinity to RNA. In the present study experimental pancreatitis was induced in male rats by a single intravenous application of dibutyltin dichloride (DBTC). Sections of rat pancreas were immunostained with an affinity-purified polyclonal antiserum against vigilin or trypsin(ogen). The changes in vigilin and trypsin(ogen) protein expression were determined by immunoblotting and subsequent sequence analysis of the amino acids. Induction of pancreatitis by DBTC caused alterations in the distribution and the amount of both vigilin and trypsin(ogen) as shown by immunohistochemical and immunoblot analysis. Furthermore we could demonstrate that anionic trypsinogen expression is up-regulated in DBTC-induced chronic pancreatitis. The obtained results suggest that vigilin as well as trypsin(ogen) are involved in the pathogenesis of pancreatitis and that the long-time DBTC-induced pancreatitis is a useful model for study of chronic pancreatitis.
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