Abstract
Congenital dilatation of the bile duct (CDBD), or choledochal cyst, is often complicated by recurrent pancreatitis. Reflux of pancreatic juice into the bile duct through pancreaticobiliary maljunction (PBM), an anomaly commonly associated with CDBD, and ensuing activation of pancreatic enzymes could be involved in the pathophysiologic mechanism of recurrent pancreatitis. A study was undertaken to follow the time course of the activity of phospholipase A2 (PLA2) in animal models of PBM. The assay procedures for PLA2 were evaluated, as were the conditions for separating the active enzyme from its inactive proenzyme (pro-PLA2) by immunoblotting. A rat model was designed according to Block’s method with some modifications. The kinetics of prophospholipase A2 (proPLA2) activation in bile was examined by measuring PLA2 activity and by immunoblotting using anti-rat pancreatic enzyme antibody after separating PLA2 from its zymogen under nonreducing conditions. Experimental animals were divided into three groups: group 1 (PBM group) in which bile and pancreatic juice were mixed with occlusion of the papilla; group 2, in which the papilla and hepatic hilus were occluded without mixing the two juices; and group 3, in which simple laparotomy was done. In group 1 animals, pro-PLA2 in bile was activated to its active form. In group 2 animals, where proPLA2 was predominant, there was only slight elevation of PLA2 activity in bile. In group 1 an immunohistologic study demonstrated localization of PLA2 around necrotic foci in the pancreatic parenchyma. These results suggest the involvement of activated PLA2 in the pathogenesis of choledochal cyst-associated pancreatitis.
Similar content being viewed by others
References
Blumenstock, D.A., Mithoefer, J., Santulli, R.V.: Acute pancreatitis in children. Pediatrics 19:1002, 1957
Gibson, L.E., Haller, J.A.: Acute pancreatitis associated with congenital cyst of the common bile duct. J. Pediatr. 55:650, 1959
Karjoo, M., Bishop, H.C., Borns, P., Holtzapple, P.G.: Choledochal cyst presenting as recurrent pancreatitis. Pediatrics 51:289, 1973
Raffensperger, J.G., Given, G.Z., Warrner, R.A.: Fusiform dilatation of the common bile duct with pancreatitis. J. Pediatr. Surg. 8:907, 1973
Japanese Study Group on Pancreaticobiliary Maljunction: Diagnostic criteria of pancreatico-biliary maljunction. J. Hepat. Biliary Pancr. Surg. 1:219, 1994
Babbitt, D.P.: Choledochal cyst: new etiological concept based on anomalous relationships of common bile duct and pancreatic bulb. Ann. Radiol. (Paris) 12:231, 1969
Okada, A., Oguchi, Y., Kamata, S., Ikeda, Y., Kawashima, Y., Saito, R.: Common channel syndrome: diagnosis with endoscopic retrograde cholangiopancreatography and surgical treatment. Surgery 93:634, 1983
Okada, A., Nakamura, T., Higaki, J., Okumura, K., Kamata, S., Oguchi, Y.: Congenital dilatation of the bile duct in 100 instances and its relationship with anomalous junction. Surg. Gynecol. Obstet. 171:291, 1990
Rinderknecht, H.: Activation of pancreatic zymogens: normal activation, premature intrapancreatic activation, protective mechanisms against inappropriate activation. Dig. Dis. Sci. 31:314, 1986
Nevalainen, T.J.: The role of phospholipase A in acute pancreatitis. Scand. J. Gastroenterol. 15:641, 1980
Vades, P., Pruzanski, W.: Role of secretory phospholipase Ab2 in the pathobiology of disease. Lab. Invest. 55:391, 1986
Block, M.A., Wakim, K.G., Baggenstoss, A.H.: Experimental studies concerning factors in the pathogenesis of acute pancreatitis. Surg. Gynecol. Obstet. 99:83, 1954
Ceska, M., Birath, K., Brown, B.: A new and rapid method for the clinical determination of α-amylase activities in human serum and urine: optimal conditions. Clin. Chim. Acta 26:437, 1969
Preiser, H., Schmitz, J., Maestracci, D.: Modification of an assay for trypsin and its application for the estimation of enteropeptidase. Clin. Chim. Acta 59:169, 1975
Bradford, M.M.: A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein dye binding. Anal. Biochem. 72:248, 1976
Tojo, H., Ono, T., Okamoto, M.: Spleen phospholipase Ab2. Methods Enzymol. 197:390, 1991
Laemmli, U.K.: Cleavage of structural proteins during the assembly of the head of bacterophage Tb4. Nature 227:680, 1970
Sugano, S., Ohnishi, T., Hatae, N., et al.: Monoclonal antibodies against bovine adrenal cytochrome P-450 11β and cytochrome P-450bSCC: their isolation, characterization and application to immuno-histochemical analysis of adrenal cortex. J. Steroid Biochem. 23:1013, 1985
Ono, T., Tojo, H., Inoue, K.: Rat pancreatic phospholipase Ab2: purificaiton, characterization, and N-terminal amino acid sequence. J. Biochem. 96:785, 1972
Nakamura, T.: An experimental study on pancreatitis associated with special reference to the activation of prophospholipase Ab2 in bile. J. Jpn. Surg. Soc. [Nippon Geka Gakkai Zasshi] 95:382, 1994
Hsu, S.M., Raine, L., Fanger, H.: A comparative study of the peroxidase-antiperoxidase method and an avidin biotin complex method for studying polypeptide hormones with radioimmunoassay antibodies. Am. J. Clin. Pathol. 75:734, 1981
Tojo, H., Ono, T., Kuramitsu, S., Kagamiyama, H., Okamoto, M.: A phospholipase Ab2 in the supernatant fraction of rat spleen: its similarity to rat pancreatic phospholipase Ab2. J. Biol. Chem. 263:5724, 1988
Ohkawa, H., Sawaguchi, S., Yamazaki, Y., Sakaniwa, M., Ishikawa, A.: Research on animal models of the anomalous pancreatico-biliary ductal union. Jpn. J. Pediatr. Surg. 18:185, 1982
Pieterson, W.A., Vidal, J.C., Volwerk, J.J., deHaas, G.H.: Zymogencatalyzed hydrolysis of monomeric substrates and the presence of a recognition site for lipid-water interfaces in phospholipase Ab2. Biochemistry 13:1455, 1974
Holbling, N., EI-Kalak, H., Georgopoulos, A., Stilianu, L., Hacker, G.: Phospholipase-Ab1 and Ab2 in experimental acute pancreatitis in rats. Res. Exp. Med. 185:131, 1985
Dehaas, G.H., Sanda, L., Roger, L.: Positional specific hydrolysis of phospholipids by pancreatic lipase. Biochim. Biophys. Acta 106:638, 1965
Schroder, T., Kivilaakso, E., Kinnunen, P.K.J., Lempine, M.: Serum phospholipase Ab2 in human acute pancreatitis. Scand. J. Gastroenterol. 15:633, 1980
Nevalainen, T.J., Eskola, J.U., Aho, A.J., Havia, V.T., Lovqren, T.N.E., Nato, V.: Immunoreactive phospholipase Ab2 in serum in acute pancreatitis and pancreatic cancer. Clin. Chem. 31:1116, 1974
Westermarck, E., Rimaila-Parnanen, E.: Serum phospholipase Ab2 in canine acute pancreatitis. Acta Vet. Scand. 24:477, 1983
Mizuma, K., Schroder, T., Kaarne, M., Korpela, H., Lempinen, M.: Serum phospholipase Ab2 in diet-induced pancreatitis. Eur. Surg. Res. 16:156, 1984
Grant, D.A.W., Jones, P.A., Hermon-Taylor, J.: The biliary excretion of enterokinase in rats. Biochem. J. 198:315, 1981
Talbot, R.W., Grant, D.A.W., Hermon-Taylor, J.: Displacement of endogenous enterokinase into portal venous blood and bile following luminal perfusion of proximal small intestine in guinea pigs. Dig. Dis. Sci. 29:1009, 1984
Herriott, B.A., Palmer, A.A.: Rupture of small ducts and acini in the pancreas of the rat and guinea pig following major duct obstruction. Aust. J. Exp. Biol. Med. Sci. 44:143, 1966
Bergentz, S.E., Edlund, Y.: Cortisone in experimental acute pancreatitis lesion. Acta Chir. Scand. 119:24, 1960
Edlund, R., Ekholm, R., Zelander, T.: The morphological basis of acute pancreatitis edema: a light and electron microscopical study on rats. Acta Chir. Scand. 123:389, 1962
Anderson, M.C., Mehn, W.H., Method, H.L.: An evaluation of the common channel as a factor in pancreatic or biliary disease. Ann. Surg. 151:379, 1960
White, T.T., Magee, D.F.: Perfusion of the dog pancreas with bile without production of pancreatitis. Ann. Surg. 151:245, 1960
Elliott, D.W., Williams, R.D., Zollinger, R.M.: Alterations in the pancreatic resistance to bile in the pathogenesis of acute pancreatitis. Ann. Surg. 146:669, 1957
Armstrong, C.P., Taylor, T.V., Torrance, H.B.: Pressure, volume and the pancreas. Gut 26:615, 1985
Nevalainen, T.J., Aho, H.J., Eskola, J.U., Suonpaa, A.K.: Immunohistochemical localization of phospholipase Ab2 in human. Acta Pathol. Microbiol. Immunol. Scand. [A] 91:97, 1983
Aho, H.J., Sternby, B., Nevalainen, T.J.: Fat necrosis in human acute pancreatitis: an immunohistological study. Acta Pathol. Microbiol. Immunol. Scand. [A] 94:101, 1986
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nakamura, T., Okada, A., Higaki, J. et al. Pancreaticobiliary Maljunction-Associated Pancreatitis: An Experimental Study on the Activation of Pancreatic Phospholipase A2 . World J. Surg. 20, 543–550 (1996). https://doi.org/10.1007/s002689900084
Published:
Issue Date:
DOI: https://doi.org/10.1007/s002689900084