| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
Short Communications |

From the Division of Medical Biology,*
Institute of
Pathology, University of Rostock, Rostock; and the Department of
Medicine B,
Westfälische
Wilhelms-Universität, Münster, Germany
The exocrine pancreas synthesizes and secretes large amounts of digestive proteases as inactive precursor zymogens. Under physiological conditions a variety of cellular defense mechanisms protect the pancreatic acinar cell against a premature and intracellular activation of these zymogens. When these defenses fail, pancreatic autodigestion is initiated and acute pancreatitis can develop. A number of experimental observations suggest that extra- as well as intracellular calcium concentrations play an important part in the initiation of pancreatic protease activation, but the intracellular signaling events that regulate this process are unknown. Using a model system in which we used pancreatic acini (freshly prepared functional units of living acinar cells), we were able to simulate the conditions found during experimental pancreatitis in rodents. By means of a cell permeant fluorescent trypsin substrate we could demonstrate in these acini that premature protease activation is initiated at the apical acinar cell pole and occurs only in the presence of secretagogue concentrations that exceed those required for a maximum secretory response. By combining this technique with fluorescence ratio imaging for the Ca2+-sensitive dye fura-2, we could further show that this protease activation is highly dependent on the spatial as well as the temporal distribution of the corresponding Ca2+ release from stores within the same subcellular compartment and that it is not propagated to neighboring acinar cells.
This article has been cited by other articles:
![]() |
C. W. Michalski, F. Selvaggi, M. Bartel, T. Mitkus, A. Gorbachevski, T. Giese, P. D. Sebastiano, N. A. Giese, and H. Friess Altered anti-inflammatory response of mononuclear cells to neuropeptide PACAP is associated with deregulation of NF-{kappa}B in chronic pancreatitis Am J Physiol Gastrointest Liver Physiol, January 1, 2008; 294(1): G50 - G57. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. I. E. Bruce and A. C. Elliott Oxidant-impaired intracellular Ca2+ signaling in pancreatic acinar cells: role of the plasma membrane Ca2+-ATPase Am J Physiol Cell Physiol, September 1, 2007; 293(3): C938 - C950. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Z. Husain, W. M. Grant, F. S. Gorelick, M. H. Nathanson, and A. U. Shah Caerulein-induced intracellular pancreatic zymogen activation is dependent on calcineurin Am J Physiol Gastrointest Liver Physiol, June 1, 2007; 292(6): G1594 - G1599. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Wildi, J. Kleeff, J. Mayerle, A. Zimmermann, E. P Bottinger, L. Wakefield, M. W Buchler, H. Friess, and M. Korc Suppression of transforming growth factor {beta} signalling aborts caerulein induced pancreatitis and eliminates restricted stimulation at high caerulein concentrations Gut, May 1, 2007; 56(5): 685 - 692. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. S. Kowalik, C. L. Johnson, S. A. Chadi, J. Y. Weston, E. N. Fazio, and C. L. Pin Mice lacking the transcription factor Mist1 exhibit an altered stress response and increased sensitivity to caerulein-induced pancreatitis Am J Physiol Gastrointest Liver Physiol, April 1, 2007; 292(4): G1123 - G1132. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. W. Sherwood, I. A. Prior, S. G. Voronina, S. L. Barrow, J. D. Woodsmith, O. V. Gerasimenko, O. H. Petersen, and A. V. Tepikin Activation of trypsinogen in large endocytic vacuoles of pancreatic acinar cells PNAS, March 27, 2007; 104(13): 5674 - 5679. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. Fischer, A. S. Gukovskaya, J. M. Penninger, O. A. Mareninova, H. Friess, I. Gukovsky, and S. J. Pandol Phosphatidylinositol 3-kinase facilitates bile acid-induced Ca2+ responses in pancreatic acinar cells Am J Physiol Gastrointest Liver Physiol, March 1, 2007; 292(3): G875 - G886. [Abstract] [Full Text] [PDF] |
||||
![]() |
M M Lerch and W Halangk Human pancreatitis and the role of cathepsin B. Gut, September 1, 2006; 55(9): 1228 - 1230. [Full Text] [PDF] |
||||
![]() |
S Mahurkar, M M Idris, D N Reddy, S Bhaskar, G V Rao, V Thomas, L Singh, and G R Chandak Association of cathepsin B gene polymorphisms with tropical calcific pancreatitis Gut, September 1, 2006; 55(9): 1270 - 1275. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. T. Hyvonen, K.-H. Herzig, R. Sinervirta, E. Albrecht, I. Nordback, J. Sand, T. A. Keinanen, J. Vepsalainen, N. Grigorenko, A. R. Khomutov, et al. Activated Polyamine Catabolism in Acute Pancreatitis: {alpha}-Methylated Polyamine Analogues Prevent Trypsinogen Activation and Pancreatitis-Associated Mortality Am. J. Pathol., January 1, 2006; 168(1): 115 - 122. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Z. Husain, P. Prasad, W. M. Grant, T. R. Kolodecik, M. H. Nathanson, and F. S. Gorelick The ryanodine receptor mediates early zymogen activation in pancreatitis PNAS, October 4, 2005; 102(40): 14386 - 14391. [Abstract] [Full Text] [PDF] |
||||
![]() |
J Schnekenburger, J Mayerle, B Kruger, I Buchwalow, F U Weiss, E Albrecht, V E Samoilova, W Domschke, and M M Lerch Protein tyrosine phosphatase {kappa} and SHP-1 are involved in the regulation of cell-cell contacts at adherens junctions in the exocrine pancreas Gut, October 1, 2005; 54(10): 1445 - 1455. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. Lupia, A. Goffi, P. De Giuli, O. Azzolino, O. Bosco, E. Patrucco, M. C. Vivaldo, M. Ricca, M. P. Wymann, E. Hirsch, et al. Ablation of Phosphoinositide 3-Kinase-{gamma} Reduces the Severity of Acute Pancreatitis Am. J. Pathol., December 1, 2004; 165(6): 2003 - 2011. [Abstract] [Full Text] [PDF] |
||||
![]() |
D C Whitcomb Value of genetic testing in the management of pancreatitis Gut, November 1, 2004; 53(11): 1710 - 1717. [Full Text] [PDF] |
||||
![]() |
D. N. Criddle, M. G. T. Raraty, J. P. Neoptolemos, A. V. Tepikin, O. H. Petersen, and R. Sutton Ethanol toxicity in pancreatic acinar cells: Mediation by nonoxidative fatty acid metabolites PNAS, July 20, 2004; 101(29): 10738 - 10743. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. G. Voronina, S. L. Barrow, O. V. Gerasimenko, O. H. Petersen, and A. V. Tepikin Effects of Secretagogues and Bile Acids on Mitochondrial Membrane Potential of Pancreatic Acinar Cells: COMPARISON OF DIFFERENT MODES OF EVALUATING {Delta}{Psi}m J. Biol. Chem., June 25, 2004; 279(26): 27327 - 27338. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. H. YU, H. KIM, and K. H. KIM Calcium-Dependent Apoptotic Gene Expression in Cerulein-Treated AR42J Cells Ann. N.Y. Acad. Sci., December 1, 2003; 1010(1): 66 - 69. [Abstract] [Full Text] [PDF] |
||||
![]() |
F. Ch. Mooren, V. Hlouschek, T. Finkes, S. Turi, I. A. Weber, J. Singh, W. Domschke, J. Schnekenburger, B. Kruger, and M. M. Lerch Early Changes in Pancreatic Acinar Cell Calcium Signaling after Pancreatic Duct Obstruction J. Biol. Chem., March 7, 2003; 278(11): 9361 - 9369. [Abstract] [Full Text] [PDF] |
||||
![]() |
Z. Kukor, J. Mayerle, B. Kruger, M. Toth, P. M. Steed, W. Halangk, M. M. Lerch, and M. Sahin-Toth Presence of Cathepsin B in the Human Pancreatic Secretory Pathway and Its Role in Trypsinogen Activation during Hereditary Pancreatitis J. Biol. Chem., June 7, 2002; 277(24): 21389 - 21396. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Simon, F. U. Weiss, M. Sahin-Toth, M. Parry, O. Nayler, B. Lenfers, J. Schnekenburger, J. Mayerle, W. Domschke, and M. M. Lerch Hereditary Pancreatitis Caused by a Novel PRSS1 Mutation (Arg-122 right-arrow Cys) That Alters Autoactivation and Autodegradation of Cationic Trypsinogen J. Biol. Chem., February 8, 2002; 277(7): 5404 - 5410. [Abstract] [Full Text] [PDF] |
||||
![]() |
F. C. MOOREN, S. TURI, D. GUNZEL, W.-R. SCHLUE, W. DOMSCHKE, J. SINGH, and M. M. LERCH Calcium-magnesium interactions in pancreatic acinar cells FASEB J, March 1, 2001; 15(3): 659 - 672. [Abstract] [Full Text] [PDF] |
||||
![]() |
W. Halangk, B. Kruger, M. Ruthenburger, J. Sturzebecher, E. Albrecht, H. Lippert, and M. M. Lerch Trypsin activity is not involved in premature, intrapancreatic trypsinogen activation Am J Physiol Gastrointest Liver Physiol, February 1, 2002; 282(2): G367 - G374. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Voronina, R. Longbottom, R. Sutton, O. H. Petersen, and A. Tepikin Bile acids induce calcium signals in mouse pancreatic acinar cells: implications for bile-induced pancreatic pathology J. Physiol., April 1, 2002; 540(1): 49 - 55. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |