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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Kinin-B1 receptors in ischaemia-induced pancreatitis: functional importance and cellular localisation.

In this study we compare the role of kinin-B1 and B2 receptors during ischaemia/reperfusion of rat pancreas. Our investigations were prompted by the observation that infusion of a kinin-B2 receptor antagonist produced significant improvement in acute experimental pancreatitis. In an acute model with two hours of ischaemia/two hours of reperfusion, application of the kinin-B1 receptor antagonist (CP-0298) alone, or in combination with kinin-B2 receptor antagonist (CP-0597), significantly reduced the number of adherent leukocytes in post-capillary venules. In a chronic model with five days of reperfusion, the continuous application of kinin-B1 receptor antagonist or a combination of kinin-B1 and B2 receptor antagonists markedly reduced the survival rate. In kinin-receptor binding studies kinin-B1 receptor showed a 22-fold increase in expression during the time of ischaemia/reperfusion. Carboxypeptidase M activity was up-regulated 10-fold following two hours of ischaemia and two hours of reperfusion, provided the appropriate specific ligand, des-Arg10-kallidin and/or des-Arg9-bradykinin, was used. The occurrence of kinin-B1 receptor binding sites on acinar cell membranes was demonstrated by micro-autoradiography. With a specific antibody, the localisation of kinin-B1 receptor protein was confirmed at the same sites. In conclusion, we have demonstrated the up-regulation of the pancreatic acinar cell kinin-B1 receptors during ischaemia/reperfusion. The novel functional finding was that antagonism of the kinin-B1 receptors decreased the survival rate in an experimental model of pancreatitis.[1]


  1. Kinin-B1 receptors in ischaemia-induced pancreatitis: functional importance and cellular localisation. Kuebler, J.F., Schremmer-Danninger, E., Bhoola, K.D., Roscher, A.A., Messmer, K., Hoffmann, T.F. Biol. Chem. (2003) [Pubmed]
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