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Hirata M, Hayashi I, Yoshimura K, Ishii KI, Soma K, Ohwada T, Kakita A, Majima M. Blockade of bradykinin B(2) receptor suppresses acute pancreatitis induced by obstruction of the pancreaticobiliary duct in rats. Br J Pharmacol 2002; 135:29-36. [PMID: 11786477 PMCID: PMC1573123 DOI: 10.1038/sj.bjp.0704462] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
1. The involvement of bradykinin (BK) B(2) receptor in acute pancreatitis induced by pancreaticobiliary duct ligation was investigated in rats. 2. The activities of amylase and lipase in the serum, the water content of the pancreas, and vacuolization of the acinar cells were significantly increased 2 h after obstruction of the duct in Sprague-Dawley rats. 3. Elevated serum amylase activity, increased pancreatic oedema, and damage of the pancreatic tissue were significantly less marked in plasma kininogen-deficient, B/N-Katholiek rats than in the normal strain, B/N-Kitasato rats 2 h after the ligation. 4. Obstruction of the pancreaticobiliary duct augmented the level of (1-5)-BK (Arg(1)-Pro(2)-Pro(3)-Gly(4)-Phe(5)), a stable BK metabolite, in the blood from 73.0+/-21.7 pg ml(-1) at 0 h to 149.8+/-38.0 pg ml(-1) at 2 h after the induction of pancreatitis in SD rats. 5. Administration of a BK B(2) receptor antagonist, FR173657 (100 mg kg(-1), p.o.) or Hoe140 (100 nmol kg(-1), s.c.), reduced the elevation of amylase and lipase activities in the serum and of pancreatic water content in a dose-dependent manner. The effective attenuation of oedema formation and vacuolization by the antagonists was also confirmed light-microscopically. In contrast, treatment with gabexate mesilate or indomethacin did not cause significant suppression of the pancreatitis. 6. These findings suggest a possible involvement of kinin B(2) receptor in the present pancreatitis model. Furthermore, they point to the potential usefulness of the B(2) receptor in clinical acute pancreatitis.
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Affiliation(s)
- Mitsuhiro Hirata
- Department of Surgery, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
- Department of Traumatology and Critical Care Medicine, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Izumi Hayashi
- Department of Pharmacology, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
- Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa 228-8555, Japan
- Author for correspondence:
| | - Kuniko Yoshimura
- Department of Traumatology and Critical Care Medicine, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Ken-ichiro Ishii
- Department of Surgery, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Kazui Soma
- Department of Traumatology and Critical Care Medicine, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Takashi Ohwada
- Department of Traumatology and Critical Care Medicine, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Akira Kakita
- Department of Surgery, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
| | - Masataka Majima
- Department of Pharmacology, Kitasato University School of Medicine, Kitasato, Sagamihara, Kanagawa 228-8555, Japan
- Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences, Sagamihara, Kanagawa 228-8555, Japan
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