PMID- 15087417 OWN - NLM STAT- MEDLINE DCOM- 20041015 LR - 20141120 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 94 IP - 10 DP - 2004 May 28 TI - Bradykinin B1 receptor expression induced by tissue damage in the rat portal vein: a critical role for mitogen-activated protein kinase and nuclear factor-kappaB signaling pathways. PG - 1375-82 AB - The bradykinin B1 receptor (B1R) is normally absent under physiological conditions, but is highly inducible during inflammatory conditions or following tissue damage. The present study attempted to determine some of the mechanisms underlying B1R upregulation following tissue injury in rat portal vein. Damage induced by tissue isolation and in vitro incubation caused a significant and time-dependent increase in des-Arg9-bradykinin (des-Arg9-BK) responsiveness that paralleled the B1R mRNA expression, as confirmed by real-time quantitative PCR. In vitro incubation of rat portal vein also induced the activation of some members of the mitogen activated protein kinase (MAPK) family, namely, extracellular signal-regulated kinase (ERK), c-Jun NH2-terminal kinase (JNK), and p38 MAPK, an effect accompanied by degradation of the inhibitory protein IkappaBalpha and translocation of nuclear transcription factor-kappaB (NF-kappaB) to the nucleus. The blockade of p38 MAPK, JNK or NF-kappaB, but not ERK pathways with selective inhibitors, resulted in a significant reduction of the upregulated contractile response caused by the selective B1R agonist des-Arg9-BK, and largely prevented the induction of B1R mRNA expression in the rat portal vein. Together, these results demonstrate that in vitro tissue damage induces activation of several intracellular signaling pathways that have a key role in the control of B1R expression. B1R could exert a pivotal role in the development of the cardiovascular response associated with vascular damage. FAU - Medeiros, Rodrigo AU - Medeiros R AD - Department of Pharmacology, Universidade Federal de Santa Catarina, Brazil. FAU - Cabrini, Daniela A AU - Cabrini DA FAU - Ferreira, Juliano AU - Ferreira J FAU - Fernandes, Elizabeth S AU - Fernandes ES FAU - Mori, Marcelo A S AU - Mori MA FAU - Pesquero, Joao B AU - Pesquero JB FAU - Bader, Michael AU - Bader M FAU - Avellar, Maria C W AU - Avellar MC FAU - Campos, Maria M AU - Campos MM FAU - Calixto, Joao B AU - Calixto JB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20040415 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (Enzyme Inhibitors) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (Receptor, Bradykinin B1) RN - 15958-92-6 (bradykinin, des-Arg(9)-) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - S8TIM42R2W (Bradykinin) SB - IM MH - Animals MH - Bradykinin/*analogs & derivatives/pharmacology MH - Enzyme Inhibitors/pharmacology MH - Gene Expression Regulation MH - In Vitro Techniques MH - MAP Kinase Signaling System MH - Mitogen-Activated Protein Kinases/antagonists & inhibitors/metabolism/*physiology MH - NF-kappa B/antagonists & inhibitors/metabolism/*physiology MH - Portal Vein/anatomy & histology/enzymology/*metabolism MH - RNA, Messenger/metabolism MH - Rats MH - Receptor, Bradykinin B1/*biosynthesis/genetics MH - Signal Transduction MH - Up-Regulation EDAT- 2004/04/17 05:00 MHDA- 2004/10/16 09:00 CRDT- 2004/04/17 05:00 PHST- 2004/04/17 05:00 [pubmed] PHST- 2004/10/16 09:00 [medline] PHST- 2004/04/17 05:00 [entrez] AID - 01.RES.0000128404.65887.08 [pii] AID - 10.1161/01.RES.0000128404.65887.08 [doi] PST - ppublish SO - Circ Res. 2004 May 28;94(10):1375-82. doi: 10.1161/01.RES.0000128404.65887.08. Epub 2004 Apr 15.