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Paterson KJ, Zambreanu L, Bennett DLH, McMahon SB. Characterisation and mechanisms of bradykinin-evoked pain in man using iontophoresis. Pain 2013; 154:782-92. [PMID: 23422725 PMCID: PMC3919168 DOI: 10.1016/j.pain.2013.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 11/19/2012] [Accepted: 01/02/2013] [Indexed: 12/22/2022]
Abstract
Bradykinin (BK) is an inflammatory mediator that can evoke oedema and vasodilatation, and is a potent algogen signalling via the B1 and B2 G-protein coupled receptors. In naïve skin, BK is effective via constitutively expressed B2 receptors (B2R), while B1 receptors (B1R) are purported to be upregulated by inflammation. The aim of this investigation was to optimise BK delivery to investigate the algesic effects of BK and how these are modulated by inflammation. BK iontophoresis evoked dose- and temperature-dependent pain and neurogenic erythema, as well as thermal and mechanical hyperalgesia (P < 0.001 vs saline control). To differentiate the direct effects of BK from indirect effects mediated by histamine released from mast cells (MCs), skin was pretreated with compound 4880 to degranulate the MCs prior to BK challenge. The early phase of BK-evoked pain was reduced in degranulated skin (P < 0.001), while thermal and mechanical sensitisation, wheal, and flare were still evident. In contrast to BK, the B1R selective agonist des-Arg9-BK failed to induce pain or sensitise naïve skin. However, following skin inflammation induced by ultraviolet B irradiation, this compound produced a robust pain response. We have optimised a versatile experimental model by which BK and its analogues can be administered to human skin. We have found that there is an early phase of BK-induced pain which partly depends on the release of inflammatory mediators by MCs; however, subsequent hyperalgesia is not dependent on MC degranulation. In naïve skin, B2R signaling predominates, however, cutaneous inflammation results in enhanced B1R responses.
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Affiliation(s)
- Kathryn J Paterson
- Wolfson Centre for Age-Related Disease, King's College London, London, UK.
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Reddy KL, Feinberg AP. Higher order chromatin organization in cancer. Semin Cancer Biol 2012; 23:109-15. [PMID: 23266653 DOI: 10.1016/j.semcancer.2012.12.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 12/12/2012] [Indexed: 01/30/2023]
Abstract
In spite of our increased understanding of how genomes are dysregulated in cancer and a plethora of molecular diagnostic tools, the front line and 'gold standard' detection of cancer remains the pathologist's detection of gross changes in cellular and tissue structure, most strikingly nuclear dis-organization. In fact, for over 140 years it has been noted that nuclear morphology is often disrupted in cancer. Even today, nuclear morphology measures include nuclear size, shape, DNA content (ploidy) and 'chromatin organization'. Given the importance of nuclear shape to diagnoses of cancer phenotypes, it is surprising and frustrating that we currently lack a detailed understanding to explain these changes and how they might arise and relate to molecular events in the cell. It is an implicit hypothesis that perturbation of chromatin and epigenetic signatures may lead to alterations in nuclear structure (or vice versa) and that these perturbations lie at the heart of cancer genesis. In this review, we attempt to synthesize research leading to our current understanding on how chromatin interactions at the nuclear lamina, epigenetic modulation and gene regulation may intersect in cancer and offer a perspective on critical experiments that would help clarify how nuclear architecture may contribute to the cancerous phenotype. We also discuss the historical understanding of nuclear structure in normal cells and as a diagnostic in cancer.
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Affiliation(s)
- Karen L Reddy
- Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, United States.
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Jozwiak L, Drop A, Buraczynska K, Ksiazek P, Mierzicki P, Buraczynska M. Association of the human bradykinin B2 receptor gene with chronic renal failure. ACTA ACUST UNITED AC 2012; 8:157-61. [PMID: 15771553 DOI: 10.1007/bf03260059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The kallikrein-kinin system plays an important role in blood pressure homeostasis and renal sodium regulation, and some studies have reported that the kinins have a protective effect against hypertension and the development of renal disease. The B2-bradykinin receptor (B2R) mediates the majority of physiological actions of bradykinin. We investigated the effect of the C181-->T polymorphism in exon 2 of the B2R gene in patients with end-stage renal disease (ESRD). METHODS This study involved 790 patients with ESRD and 510 healthy controls. All participants were genotyped for the B2R C181-->T polymorphism by PCR followed by digestion of a PCR product with TaqI restriction endonuclease. DNA fragments were separated by agarose gel electrophoresis. Genotype and allele frequencies were compared between the groups. All calculations were performed using SPSS 5.0 for Windows. RESULTS B2R genotype distribution in patients and controls was in accordance with Hardy-Weinberg equilibrium. The frequency of the T allele was higher in ESRD patients than in controls. The significant difference was observed in the age at onset of renal disease; for patients with the T allele the mean age at onset was 36.8 years, compared with 52.4 years for those carrying only the C allele (p<0.001). The frequencies of the T allele and carrier genotypes were not associated with gender, presence of hypertension, or underlying kidney disease. CONCLUSION Our results suggest that the B2R polymorphism has a potential role in the earlier development of chronic renal failure in susceptible individuals. We did not confirm the previously published reports that the B2R gene polymorphism has a protective role in the development of ESRD.
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Affiliation(s)
- Lucyna Jozwiak
- Laboratory for Molecular Diagnostics of Multifactorial Diseases, Department of Nephrology, Skubiszewski Medical University, Lublin, Poland
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Bradykinin- and lipopolysaccharide-induced bradykinin B2 receptor expression, interleukin 8 release and “nitrosative stress” in bronchial epithelial cells BEAS-2B: Role for neutrophils. Eur J Pharmacol 2012; 694:30-8. [DOI: 10.1016/j.ejphar.2012.07.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 07/19/2012] [Accepted: 07/30/2012] [Indexed: 11/23/2022]
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Sabatini F, Petecchia L, Usai C, Silvestri M, Rossi GA, Miller-Larsson A, Ricciardolo FLM. Pharmacological modulation of the bradykinin-induced differentiation of human lung fibroblasts: effects of budesonide and formoterol. J Asthma 2012; 49:1004-11. [PMID: 23088211 DOI: 10.3109/02770903.2012.729633] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Bradykinin (BK) induces differentiation of lung fibroblasts into myofibroblasts, which play an important role in extracellular matrix remodeling in the airways of asthmatic patients. It is unclear whether this process is affected by antiasthma therapies. Here, we evaluated whether a glucocorticoid, budesonide (BUD), and a long-acting β2-agonist, formoterol (FM), either alone or in combination, modified BK-induced lung fibroblast differentiation, and affected the BK-activated intracellular signaling pathways. METHODS Human fetal lung fibroblasts were incubated with BUD (0.001-0.1 μM) and/or FM (0.0001-0.1 μM) before exposure to BK (0.1 or 1 μM). Fibroblast differentiation into α-smooth-muscle-actin-positive (α-SMA⁺) myofibroblasts, BK2 receptor (B2R) expression, extracellular signal-regulated kinase 1/2 (ERK 1/2) phosphorylation (p-ERK1/2), intracellular Ca²⁺ concentration ([Ca²⁺]i), and p65 nuclear factor kappa B translocation were evaluated. RESULTS BUD (0.1 μM) and FM (0.1 μM), either alone or in combination, completely inhibited BK-induced α-SMA protein expression and decreased the numbers of α-SMA⁺ fibroblasts, with a clear reduction in α-SMA stress fibers organization. BUD also completely inhibited the increase of B2R, whereas FM with or without BUD had no effect. BK-induced increases of [Ca²⁺]i and p-ERK1/2 were significantly reduced to similar levels by BUD and FM, either alone or in combination, whereas p65 translocation was completely inhibited by all treatments. CONCLUSION Both BUD and FM, either alone or in combination, effectively inhibited the BK-induced differentiation of fibroblasts into α-SMA⁺ myofibroblasts and the intracellular signaling pathways involved in fibroblast activation. These results suggest that BUD and FM combination therapy has potential to inhibit fibroblast-dependent matrix remodeling in the airways of asthmatic patients.
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Basei FL, Cabrini DA, Figueiredo CP, Forner S, Hara DB, Nascimento AFZ, Ceravolo GS, Carvalho MHC, Bader M, Medeiros R, Calixto JB. Endothelium dependent expression and underlying mechanisms of des-Arg⁹-bradykinin-induced B₁R-mediated vasoconstriction in rat portal vein. Peptides 2012; 37:216-24. [PMID: 22868213 DOI: 10.1016/j.peptides.2012.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Revised: 07/23/2012] [Accepted: 07/24/2012] [Indexed: 10/28/2022]
Abstract
Endothelial dysfunction has been implicated in portal vein obstruction, a condition responsible for major complications in chronic portal hypertension. Increased vascular tone due to disruption of endothelial function has been associated with an imbalance in the equilibrium between endothelium-derived relaxing and contracting factors. Herein, we assessed underlying mechanisms by which expression of bradykinin B(1) receptor (B(1)R) is induced in the endothelium and how its stimulation triggers vasoconstriction in the rat portal vein. Prolonged in vitro incubation of portal vein resulted in time- and endothelium-dependent expression of B(1)R and cyclooxygenase-2 (COX-2). Inhibition of protein kinase C (PKC) or phosphatidylinositol 3-kinase (PI3K) significantly reduced expression of B(1)R through the regulation of transcription factors, activator protein-1 (AP-1) and cAMP response element-binding protein (CREB). Moreover, pharmacological studies showed that B(1)R-mediated portal vein contraction was reduced by COX-2, but not COX-1, inhibitors. Notably, activation of endothelial B(1)R increased phospholipase A(2)/COX-2-derived thromboxane A(2) (TXA(2)) levels, which in turn mediated portal vein contraction through binding to TXA(2) receptors expressed in vascular smooth muscle cells. These results provide novel molecular mechanisms involved in the regulation of B(1)R expression and identify a critical role for the endothelial B(1)R in the modulation of portal vein vascular tone. Our study suggests a potential role for B(1)R antagonists as therapeutic tools for diseases where portal hypertension may be involved.
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Affiliation(s)
- Fernanda L Basei
- Departamento de Farmacologia, Universidade Federal de Santa Catarina, Santa Catarina, Brazil
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Facilitation of sympathetic neurotransmission by phosphatidylinositol-4,5-bisphosphate-dependent regulation of KCNQ channels in rat mesenteric arteries. Hypertens Res 2012; 35:909-16. [PMID: 22592664 DOI: 10.1038/hr.2012.61] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Sympathetic nerves regulate vascular tone by releasing neurotransmitters into the vasculature. We previously demonstrated that bradykinin facilitates sympathetic neurotransmission in rat mesenteric arteries. Although little is known about the intracellular mechanism modulating this neurotransmission, recent cell line experiments have shown that the KCNQ channel, which is inhibited by the depletion of membrane phosphatidylinositol-4,5-bisphosphate (PIP₂), participates in the control of neurotransmission by bradykinin. In the present study, we examined the mechanism regulating neurotransmitter release from rat perivascular sympathetic nerves. Excitatory junction potentials (EJPs) elicited by repetitive nerve stimulation (1 Hz, 11 pulses, 20 μs, 20-50 V), a measure of sympathetic purinergic neurotransmission, were recorded with a conventional microelectrode technique in rat mesenteric arteries. Bradykinin (10⁻⁷ mol l⁻¹) significantly enhanced the amplitude of EJPs (n=22, P<0.05). This enhancing effect was abolished by N-type calcium-channel inhibition with ω-conotoxin GVIA (2 × 10⁻⁹ mol ⁻¹l, n=8). The blockade of phospholipase C with U-73122 (10(-6) mol l⁻¹, n=17) also eliminated the facilitatory effect of bradykinin. In addition, the effects of bradykinin were diminished by the prevention of PIP₂ resynthesis with wortmannin (10⁻⁵ mol l⁻¹ n=7) or KCNQ channel inhibition with XE-991 (10⁻⁵ mol l⁻¹, n=7). On the other hand, depletion of intracellular calcium stores with cyclopiazonic acid (3 × 10⁻⁶ mol l⁻¹, n=6) or the inhibition of protein kinase C with bisindolylmaleimide-I (10⁻⁶ mol l⁻¹, n=9) did not alter the action of bradykinin. These data demonstrate that the hydrolysis of PIP₂ by phospholipase C, which is activated by G(q/11)-coupled receptors, and subsequent KCNQ channel inhibition enhance sympathetic purinergic neurotransmission presumably via the activation of N-type calcium channels in rat mesenteric arteries.
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Basselin M, Ramadan E, Rapoport SI. Imaging brain signal transduction and metabolism via arachidonic and docosahexaenoic acid in animals and humans. Brain Res Bull 2012; 87:154-71. [PMID: 22178644 PMCID: PMC3274571 DOI: 10.1016/j.brainresbull.2011.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 12/01/2011] [Accepted: 12/02/2011] [Indexed: 02/05/2023]
Abstract
The polyunsaturated fatty acids (PUFAs), arachidonic acid (AA, 20:4n-6) and docosahexaenoic acid (DHA, 22:6n-3), important second messengers in brain, are released from membrane phospholipid following receptor-mediated activation of specific phospholipase A(2) (PLA(2)) enzymes. We developed an in vivo method in rodents using quantitative autoradiography to image PUFA incorporation into brain from plasma, and showed that their incorporation rates equal their rates of metabolic consumption by brain. Thus, quantitative imaging of unesterified plasma AA or DHA incorporation into brain can be used as a biomarker of brain PUFA metabolism and neurotransmission. We have employed our method to image and quantify effects of mood stabilizers on brain AA/DHA incorporation during neurotransmission by muscarinic M(1,3,5), serotonergic 5-HT(2A/2C), dopaminergic D(2)-like (D(2), D(3), D(4)) or glutamatergic N-methyl-d-aspartic acid (NMDA) receptors, and effects of inhibition of acetylcholinesterase, of selective serotonin and dopamine reuptake transporter inhibitors, of neuroinflammation (HIV-1 and lipopolysaccharide) and excitotoxicity, and in genetically modified rodents. The method has been extended for the use with positron emission tomography (PET), and can be employed to determine how human brain AA/DHA signaling and consumption are influenced by diet, aging, disease and genetics.
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Affiliation(s)
- Mireille Basselin
- Brain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Epolia Ramadan
- Brain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Stanley I. Rapoport
- Brain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
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Rust NM, Papa MP, Scovino AM, da Silva MMC, Calzavara-Silva CE, Marques ETDA, Peçanha LMT, Scharfstein J, Arruda LB. Bradykinin enhances Sindbis virus infection in human brain microvascular endothelial cells. Virology 2012; 422:81-91. [DOI: 10.1016/j.virol.2011.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 08/03/2011] [Accepted: 10/04/2011] [Indexed: 12/16/2022]
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Shin HS, Ha UH. Up-regulation of human bradykinin B1 receptor by secreted components ofPseudomonas aeruginosavia a NF-κB pathway in epithelial cells. ACTA ACUST UNITED AC 2011; 63:418-26. [DOI: 10.1111/j.1574-695x.2011.00868.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 08/26/2011] [Accepted: 08/30/2011] [Indexed: 11/28/2022]
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Bradykinin type-2 receptor expression correlates with age and is subjected to transcriptional regulation. Int J Vasc Med 2011; 2012:159646. [PMID: 21977324 PMCID: PMC3185256 DOI: 10.1155/2012/159646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 07/11/2011] [Indexed: 01/19/2023] Open
Abstract
Accumulating work in experimental animals suggests that bradykinin (BK) exerts cardioprotective effects via bradykinin type-2 receptors (BK-2Rs). In human end-stage heart failure, BK-2Rs are significantly downregulated by mechanisms that have remained elusive. Heart tissues from idiopathic dilated cardiomyopathy (IDC; n = 7), coronary heart disease (CHD; n = 6), and normal patients (n = 6) were analyzed by RT-PCR, SSCP, and Western blotting. In normal and IDC hearts, BK-2R expression increased with age, with a lower relative increase in IDC hearts. BK-2R mRNA and protein levels showed a positive linear correlation, suggesting transcriptional regulation. Two known BK-2R promoter polymorphisms, −58T/C and −9/+9, were found to be present in the study population. The allelic frequencies for the C-allele in −58T/C were 0.58 in normal and CHD hearts and 0.81 in IDC hearts. Furthermore, the allelic frequencies for the −9 and +9 alleles were 0.42 and 0.58 in normal hearts and 0.64 and 0.36 in IDC hearts, respectively. All analyzed CHD hearts were homozygous for the −9 allele. Thus, the expression of cardioprotective BK-2Rs in human hearts is increased with age in normal and IDC hearts and may be regulated on the transcriptional level. Moreover, comparison of normal subjects and patients with failing hearts revealed different allelic frequencies in each of two known BK-2R gene polymorphisms.
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Hillmeister P, Gatzke N, Dülsner A, Bader M, Schadock I, Hoefer I, Hamann I, Infante-Duarte C, Jung G, Troidl K, Urban D, Stawowy P, Frentsch M, Li M, Nagorka S, Wang H, Shi Y, le Noble F, Buschmann I. Arteriogenesis Is Modulated By Bradykinin Receptor Signaling. Circ Res 2011; 109:524-33. [DOI: 10.1161/circresaha.111.240986] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
Positive outward remodeling of pre-existing collateral arteries into functional conductance arteries, arteriogenesis, is a major endogenous rescue mechanism to prevent cardiovascular ischemia. Collateral arterial growth is accompanied by expression of kinin precursor. However, the role of kinin signaling via the kinin receptors (B1R and B2R) in arteriogenesis is unclear.
Objective:
The purpose of this study was to elucidate the functional role and mechanism of bradykinin receptor signaling in arteriogenesis.
Methods and Results:
Bradykinin receptors positively affected arteriogenesis, with the contribution of B1R being more pronounced than B2R. In mice, arteriogenesis upon femoral artery occlusion was significantly reduced in B1R mutant mice as evidenced by reduced microspheres and laser Doppler flow perfusion measurements. Transplantation of wild-type bone marrow cells into irradiated B1R mutant mice restored arteriogenesis, whereas bone marrow chimeric mice generated by reconstituting wild-type mice with B1R mutant bone marrow showed reduced arteriogenesis after femoral artery occlusion. In the rat brain 3-vessel occlusion arteriogenesis model, pharmacological blockade of B1R inhibited arteriogenesis and stimulation of B1R enhanced arteriogenesis. In the rat, femoral artery ligation combined with arterial venous shunt model resulted in flow-driven arteriogenesis, and treatment with B1R antagonist R715 decreased vascular remodeling and leukocyte invasion (monocytes) into the perivascular tissue. In monocyte migration assays, in vitro B1R agonists enhanced migration of monocytes.
Conclusions:
Kinin receptors act as positive modulators of arteriogenesis in mice and rats. B1R can be blocked or therapeutically stimulated by B1R antagonists or agonists, respectively, involving a contribution of peripheral immune cells (monocytes) linking hemodynamic conditions with inflammatory pathways.
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Affiliation(s)
- Philipp Hillmeister
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Nora Gatzke
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - André Dülsner
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Michael Bader
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Ines Schadock
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Imo Hoefer
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Isabell Hamann
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Carmen Infante-Duarte
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Georg Jung
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Kerstin Troidl
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Daniel Urban
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Philipp Stawowy
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Marco Frentsch
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Meijing Li
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Stephanie Nagorka
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Haitao Wang
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Yu Shi
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Ferdinand le Noble
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
| | - Ivo Buschmann
- From the Experimental and Clinical Research Center of the Charite and the Max Delbrueck Center for Molecular Medicine (P.H., A.D., M.L., H.W., Y.S., F.l.N., I.B.), Berlin, Germany; Center for Cardiovascular Research (P.H., N.G., A.D., M.L., S.N., I.B.), Charité, Berlin, Germany; Center for Stroke Research Berlin (P.H., F.l.N., I.B.), Charité, Berlin, Germany; Experimental Neuroimmunology (I.H., C.I.D.), Max Delbrueck Center (M.B., I.S.), Berlin, Germany; Department of Experimental Cardiology (I.H.),
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Up-regulation of bradykinin B2 receptor by Pseudomonas aeruginosa via the NF-κB pathway. Curr Microbiol 2011; 63:138-44. [PMID: 21626144 DOI: 10.1007/s00284-011-9959-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 05/20/2011] [Indexed: 12/16/2022]
Abstract
As the first line of host defense, inflammatory responses in response to bacterial infection are initiated by the production of a range of mediators. Infection of Pseudomonas aeruginosa has been shown to stimulate the production of bradykinin (BK), which is known as a universal mediator for the induction of inflammatory reaction via the predominant interaction with the bradykinin B2 receptor (B2R). Thus, the interaction between BK and B2R represents an important host innate response against invading P. aeruginosa. However, the contribution of P. aeruginosa to the up-regulation of B2R expression remains unclear. Here, we report that P. aeruginosa is potent in inducing the expression of B2R at the mRNA and protein levels in a dose- and time-dependent manner. Components produced and secreted from P. aeruginosa could play an essential role in inducing B2R expression, and the secreted components are not under the control of Type III secretion system or quorum sensing. B2R expression in response to P. aeruginosa is mediated by the induction of cellular signaling that leads to the activation of transcription factor NF-κB. Thus, this study demonstrates that P. aeruginosa is able to up-regulate the expression of B2R during infection via the NF-κB signaling pathway.
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Gulliver R, Baltic S, Misso NL, Bertram CM, Thompson PJ, Fogel-Petrovic M. Lys-des[Arg9]-bradykinin alters migration and production of interleukin-12 in monocyte-derived dendritic cells. Am J Respir Cell Mol Biol 2010; 45:542-9. [PMID: 21177981 DOI: 10.1165/rcmb.2010-0238oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This study tested the hypothesis that proinflammatory kinin peptides are involved in modulating human dendritic cell (DC) function. Inflammation is accompanied by an increased maturation of DCs and the generation of kinins, particularly Lys-des[Arg(9)]-bradykinin (Lda-BK). We assessed the role of Lda-BK in the activation and migration of human monocyte-derived DCs (hMo-DCs) matured through the use of LPS, TNF-α + IL-1β, or CD40 ligand. Kinin B(1) and B(2) receptor mRNA and protein expression were assessed by confocal microscopy, flow cytometry, and RT-PCR. The effects of Lda-BK on the migration of mature hMo-DCs were assessed in Transwell chambers, whereas the expression of costimulatory molecules and the secretion of IL-12 were assessed by flow cytometry and ELISA, respectively. The expression of the kinin B(1) receptor (B(1)R) was down-regulated during the maturation of hMo-DCs, whereas the expression of B(2)R was unchanged. The B(1)R agonist Lda-BK was not chemotactic for hMo-DCs matured using LPS, TNF-α + IL-1β, or CD40 ligand, but Lda-BK enhanced the secretion of IL-12p70 and inhibited the secretion of IL-12p40 by mature hMo-DCs. However, the exposure of hMo-DCs matured with TNF-α + IL-1β to Lda-BK for 6 hours decreased subsequent migration in response to Lda-BK, the chemokine CCL19, or Lda-BK combined with CCL19. The expression of B(1)R was increased in hMo-DCs from subjects with asthma compared with subjects without asthma, in keeping with a tendency toward increased in vitro migration of asthmatic hMo-DCs in response to Lda-BK. The increased formation of Lda-BK and the enhanced expression of B(1)R as a consequence of inflammation may alter the migration of mature, antigen-laden DCs to regional lymph nodes in response to CCL19, may modulate the secretion of cytokines by these DCs, and may contribute to the accumulation of mature DCs in the lungs of patients with asthma.
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Affiliation(s)
- Rosalind Gulliver
- Centre for Asthma, Allergy and Respiratory Research, The University of Western Australia, and Lung Institute of Western Australia, Perth, Western Australia, Australia
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Avemary J, Diener M. Bradykinin-induced depolarisation and Ca2+ influx through voltage-gated Ca2+ channels in rat submucosal neurons. Eur J Pharmacol 2010; 635:87-95. [DOI: 10.1016/j.ejphar.2010.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 02/12/2010] [Accepted: 03/03/2010] [Indexed: 11/25/2022]
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Effect of bradykinin on bradykinin-B2 receptor in rat aortic vascular smooth muscle cells and the involved signal transduction pathways. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11684-010-0003-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kuhr F, Lowry J, Zhang Y, Brovkovych V, Skidgel RA. Differential regulation of inducible and endothelial nitric oxide synthase by kinin B1 and B2 receptors. Neuropeptides 2010; 44:145-54. [PMID: 20045558 PMCID: PMC2830320 DOI: 10.1016/j.npep.2009.12.004] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 12/01/2009] [Accepted: 12/04/2009] [Indexed: 02/07/2023]
Abstract
Kinins are vasoactive peptides that play important roles in cardiovascular homeostasis, pain and inflammation. After release from their precursor kininogens, kinins or their C-terminal des-Arg metabolites activate two distinct G protein-coupled receptors (GPCR), called B2 (B2R) or B1 (B1R). The B2R is expressed constitutively with a wide tissue distribution. In contrast, the B1R is not expressed under normal conditions but is upregulated by tissue insult or inflammatory mediators. The B2R is considered to mediate many of the acute effects of kinins while the B1R is more responsible for chronic responses in inflammation. Both receptors can couple to Galphai and Galphaq families of G proteins to release mediators such as nitric oxide (NO), arachidonic acid, prostaglandins, leukotrienes and endothelium-derived hyperpolarizing factor and can induce the release of other inflammatory agents. The focus of this review is on the different transduction events that take place upon B2R and B1R activation in human endothelial cells that leads to generation of NO via activation of different NOS isoforms. Importantly, B2R-mediated eNOS activation leads to a transient ( approximately 5min) output of NO in control endothelial cells whereas in cytokine-treated endothelial cells, B1R activation leads to very high and prolonged ( approximately 90min) NO production that is mediated by a novel signal transduction pathway leading to post-translational activation of iNOS.
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Affiliation(s)
- F Kuhr
- Department of Pharmacology, University of Illinois at Chicago, College of Medicine, 835 South Wolcott, (M/C 868), Chicago, IL 60612, United States
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68
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Synthesis and bradykinin inhibitory activity of novel non-peptide compounds, and evaluation of in vivo analgesic activity. Bioorg Med Chem 2010; 18:2327-2336. [DOI: 10.1016/j.bmc.2010.01.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 01/18/2010] [Accepted: 01/20/2010] [Indexed: 01/19/2023]
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Avemary J, Diener M. Effects of bradykinin B2 receptor stimulation at submucosal ganglia from rat distal colon. Eur J Pharmacol 2010; 627:295-303. [DOI: 10.1016/j.ejphar.2009.10.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 09/21/2009] [Accepted: 10/14/2009] [Indexed: 10/20/2022]
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Abstract
Of all clinically marketed drugs, greater than thirty percent are modulators of G protein-coupled receptors (GPCRs). Nearly 400 GPCRs (i.e., excluding odorant and light receptors) are encoded within the human genome, but only a small fraction of these seven-transmembrane proteins have been identified as drug targets. Chronic pain affects more than one-third of the population, representing a substantial societal burden in use of health care resources and lost productivity. Furthermore, currently available treatments are often inadequate, underscoring the significant need for better therapeutic strategies. The expansion of the identified human GPCR repertoire, coupled with recent insights into the function and structure of GPCRs, offers new opportunities for the development of novel analgesic therapeutics.
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Affiliation(s)
- Laura S Stone
- Faculty of Dentistry, Alan Edwards Centre for Research on Pain, Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada.
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71
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Zhang Z, Xia C, Xue Y, Liu Y. Synergistic effect of low-frequency ultrasound and low-dose bradykinin on increasing permeability of the blood-tumor barrier by opening tight junction. J Neurosci Res 2009; 87:2282-9. [PMID: 19326437 DOI: 10.1002/jnr.22061] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Low-frequency ultrasound (LFU) and bradykinin (BK) have been shown separately to increase the permeability of the blood-tumor barrier (BTB) in the rat model of C6 glioma. This study examined the hypothesis that the combination of LFU and low-dose BK has a synergistic effect on increasing the permeability of BTB and explored the possible underlying mechanism including the involvement of tight junction (TJ). The rats were divided into six groups: control group, LFU group, BK group, 2/3LFU + 1/2BK group, 5/6LFU + 2/3BK group, and LFU + BK group. The BTB permeability was assessed by Evans blue extravasation. The mRNA and protein expressions of TJ-related proteins ZO-1, occludin, and claudin-5 were determined by reverse transcriptase-polymerase chain reaction, immunohistochemistry, immunolocalization, and Western blot test. BTB permeability increased in all the experimental groups, accompanied by opening of local TJ of the BTB, observed by transmission electron microscopy, and decreased mRNA and protein expressions of ZO-1, occludin, and claudin-5. In addition, there was a further increase in BTB permeability and a further reduction in the expressions of TJ-related proteins in 5/6LFU + 2/3BK and LFU + BK groups, compared with LFU or BK group. These results indicate that LFU and low-dose BK applied in combination act in a synergistic manner to increase BTB permeability. The down-regulation of TJ-related proteins ZO-1, occludin, and claudin-5 may be one of the underlying mechanisms of the increase in BTB permeability induced by LFU and BK.
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Affiliation(s)
- Zhen Zhang
- Department of Neurobiology, Basic Medical Science College of China Medical University, Shenyang, PR China
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Kosenburger K, Schicker KW, Drobny H, Boehm S. Differential fading of inhibitory and excitatory B2 bradykinin receptor responses in rat sympathetic neurons: a role for protein kinase C. J Neurochem 2009; 110:1977-88. [PMID: 19656259 DOI: 10.1111/j.1471-4159.2009.06303.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Through inhibitory and excitatory effects on sympathetic neurons, B(2) bradykinin receptors contribute to protective and noxious cardiovascular mechanisms. Presynaptic inhibition of sympathetic transmitter release involves an inhibition of Ca(V)2 channels, neuronal excitation an inhibition of K(V)7 channels. To investigate which of these mechanisms prevail over time, the respective currents were determined. The inhibition of Ca(2+) currents by bradykinin reached a maximum of 50%, started to fade within the first minute, and became attenuated significantly after > or = 4 min. The inhibition of K(+) currents reached a maximum of 85%, started to fade after > 3 min, and became attenuated significantly after > or = 7 min. Blocking Ca(2+)-independent protein kinase C (PKC) enhanced the inhibition of Ca(2+) currents by bradykinin and delayed its fading, left the inhibition of K(+) currents and its fading unaltered, and enhanced the reduction of noradrenaline release and slowed its fading. Conversely, direct activation of PKC abolished the inhibition of noradrenaline release and largely attenuated the inhibition of Ca(2+) currents. These results show that the inhibitory effects of bradykinin in sympathetic neurons are outweighed over time by its excitatory actions because of more rapid, PKC-dependent fading of the inhibitory response.
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Affiliation(s)
- Kristina Kosenburger
- Center of Biomolecular Medicine and Pharmacology, Medical University of Vienna, Vienna, Austria
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Rapoport SI, Basselin M, Kim HW, Rao JS. Bipolar disorder and mechanisms of action of mood stabilizers. ACTA ACUST UNITED AC 2009; 61:185-209. [PMID: 19555719 DOI: 10.1016/j.brainresrev.2009.06.003] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 06/03/2009] [Accepted: 06/15/2009] [Indexed: 11/30/2022]
Abstract
Bipolar disorder (BD) is a major medical and social burden, whose cause, pathophysiology and treatment are not agreed on. It is characterized by recurrent periods of mania and depression (Bipolar I) or of hypomania and depression (Bipolar II). Its inheritance is polygenic, with evidence of a neurotransmission imbalance and disease progression. Patients often take multiple agents concurrently, with incomplete therapeutic success, particularly with regard to depression. Suicide is common. Of the hypotheses regarding the action of mood stabilizers in BD, the "arachidonic acid (AA) cascade" hypothesis is presented in detail in this review. It is based on evidence that chronic administration of lithium, carbamazepine, sodium valproate, or lamotrigine to rats downregulated AA turnover in brain phospholipids, formation of prostaglandin E(2), and/or expression of AA cascade enzymes, including cytosolic phospholipase A(2), cyclooxygenase-2 and/or acyl-CoA synthetase. The changes were selective for AA, since brain docosahexaenoic or palmitic acid metabolism, when measured, was unaffected, and topiramate, ineffective in BD, did not modify the rat brain AA cascade. Downregulation of the cascade by the mood stabilizers corresponded to inhibition of AA neurotransmission via dopaminergic D(2)-like and glutamatergic NMDA receptors. Unlike the mood stabilizers, antidepressants that increase switching of bipolar depression to mania upregulated the rat brain AA cascade. These observations suggest that the brain AA cascade is a common target of mood stabilizers, and that bipolar symptoms, particularly mania, are associated with an upregulated cascade and excess AA signaling via D(2)-like and NMDA receptors. This review presents ways to test these suggestions.
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Affiliation(s)
- Stanley I Rapoport
- Brain Physiology and Metabolism Section, National Institute on Aging, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA.
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Mizumura K, Sugiura T, Katanosaka K, Banik RK, Kozaki Y. Excitation and sensitization of nociceptors by bradykinin: what do we know? Exp Brain Res 2009; 196:53-65. [PMID: 19396590 DOI: 10.1007/s00221-009-1814-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 04/09/2009] [Indexed: 10/20/2022]
Abstract
Bradykinin is an endogenous nonapeptide known to induce pain and hyperalgesia to heat and mechanical stimulation. Correspondingly, it excites nociceptors in various tissues and sensitizes them to heat, whereas sensitizing effect on the mechanical response of nociceptors is not well established. Protein kinase C and TRPV1 contribute to the sensitizing mechanism of bradykinin to heat. In addition, TRPA1 and other ion channels appear to contribute to excitation caused by bradykinin. Finally, prostaglandins sensitize bradykinin-induced excitation in normal tissues by restoring desensitized responses due to the inhibition of protein kinase A.
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Affiliation(s)
- Kazue Mizumura
- Division of Stress Recognition and Response, Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.
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75
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Duchene J, Ahluwalia A. The kinin B(1) receptor and inflammation: new therapeutic target for cardiovascular disease. Curr Opin Pharmacol 2009; 9:125-31. [PMID: 19124274 DOI: 10.1016/j.coph.2008.11.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Revised: 11/18/2008] [Accepted: 11/19/2008] [Indexed: 01/06/2023]
Abstract
The kinin B(1) receptor plays an important role in mediating the inflammatory effects of the kallikrein-kinin pathway. The recent development of orally available non-peptidic antagonists and genetically modified mice deficient in B(1) receptor expression have demonstrated that the receptor plays a pivotal role in the cellular, particularly neutrophil, recruitment associated with an acute inflammatory response. These tools have also enabled elucidation of the pathways involved in mediating this effect and have highlighted a major role for chemokines, particularly CXCL5 and CCL2. Neutrophil recruitment is involved in the pathogenesis of renal disease and has very recently been implicated in the early stages of atherosclerosis. In this review we discuss the most recent evidence linking the B(1) receptor with the pathogenesis of these two inflammatory cardiovascular diseases and highlight the therapeutic potential of the kinin B(1) receptor in these disease states.
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Affiliation(s)
- Johan Duchene
- The William Harvey Research Institute, Barts and The London School of Medicine & Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom.
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76
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Bertram CM, Misso NL, Fogel-Petrovic M, Figueroa CD, Foster PS, Thompson PJ, Bhoola KD. Expression of kinin receptors on eosinophils: comparison of asthmatic patients and healthy subjects. J Leukoc Biol 2008; 85:544-52. [DOI: 10.1189/jlb.0508283] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Belleannée C, Da Silva N, Shum WWC, Marsolais M, Laprade R, Brown D, Breton S. Segmental expression of the bradykinin type 2 receptor in rat efferent ducts and epididymis and its role in the regulation of aquaporin 9. Biol Reprod 2008; 80:134-43. [PMID: 18829705 DOI: 10.1095/biolreprod.108.070797] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Water and solute transport in the efferent ducts and epididymis are important for the establishment of the appropriate luminal environment for sperm maturation and storage. Aquaporin 9 (AQP9) is the main water channel in the epididymis, but its regulation is still poorly understood. Components of the kinin-kallikrein system (KKS), leading to the production of bradykinin (BK), are highly expressed in the lumen of the male reproductive tract. We report here that the epididymal luminal fluid contains a significant amount of BK (2 nM). RT-PCR performed on epididymal epithelial cells isolated by laser capture microdissection (LCM) showed abundant BK type 2 receptor (Bdkrb2) mRNA expression but no type 1 receptor (Bdkrb1). Double-immunofluorescence staining for BDKRB2 and the anion exchanger AE2 (a marker of efferent duct ciliated cells) or the V-ATPase E subunit, official symbol ATP6V1E1 (a marker of epididymal clear cells), showed that BDKRB2 is expressed in the apical pole of nonciliated cells (efferent ducts) and principal cells (epididymis). Triple labeling for BDKRB2, AQP9, and ATP6V1E1 showed that BDKRB2 and AQP9 colocalize in the apical stereocilia of principal cells in the cauda epididymidis. While uniform Bdkrb2 mRNA expression was detected in the efferent ducts and along the epididymal tubule, marked variations were detected at the protein level. BDKRB2 was highest in the efferent ducts and cauda epididymidis, intermediate in the distal initial segment, moderate in the corpus, and undetectable in the proximal initial segment and the caput. Functional assays on tubules isolated from the distal initial segments showed that BK significantly increased AQP9-dependent glycerol apical membrane permeability. This effect was inhibited by BAPTA-AM, demonstrating the participation of calcium in this process. This study, therefore, identifies BK as an important regulator of AQP9.
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Affiliation(s)
- C Belleannée
- Center for Systems Biology, Program in Membrane Biology/Nephrology Division, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
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Bradykinin enhances AMPA and NMDA receptor activity in spinal cord dorsal horn neurons by activating multiple kinases to produce pain hypersensitivity. J Neurosci 2008; 28:4533-40. [PMID: 18434532 DOI: 10.1523/jneurosci.5349-07.2008] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bradykinin potentiates synaptic glutamate release and action in the spinal cord via presynaptic and postsynaptic B(2) receptors, contributing thereby to activity-dependent central sensitization and pain hypersensitivity (Wang et al., 2005). We have now examined the signaling pathways that are responsible for the postsynaptic modulatory actions of bradykinin on glutamatergic action and transmission in superficial dorsal horn neurons. B(2) receptors are coexpressed in dorsal horn neurons with protein kinase A (PKA) and the delta isoform of protein kinase C (PKC), and we find that the augmentation by bradykinin of AMPA and NMDA receptor-mediated currents in lamina II neurons requires coactivation of both PKC and PKA. The activation of PKA is downstream of COX1 (cyclooxygenase-1). Extracellular signal-regulated kinase (ERK) activation is involved after the PKC and PKA coactivation, and intrathecal administration of bradykinin induces a thermal hyperalgesia in vivo, which is reduced by inhibition of ERK, PKA, and PKC. We conclude that bradykinin, by activating multiple kinases in dorsal horn neurons, potentiates glutamatergic synaptic transmission to produce pain hypersensitivity.
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Interleukin-1β enhances the action of bradykinin in rat myenteric neurons through up-regulation of glial B1 receptor expression. Neuroscience 2008; 151:222-31. [DOI: 10.1016/j.neuroscience.2007.09.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2007] [Revised: 09/18/2007] [Accepted: 09/28/2007] [Indexed: 01/24/2023]
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80
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Bertram C, Misso NL, Fogel-Petrovic M, Figueroa C, Thompson PJ, Bhoola KD. Comparison of kinin B(1) and B(2) receptor expression in neutrophils of asthmatic and non-asthmatic subjects. Int Immunopharmacol 2007; 7:1862-8. [PMID: 18039523 DOI: 10.1016/j.intimp.2007.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Accepted: 07/06/2007] [Indexed: 10/23/2022]
Abstract
Kinins have been implicated in the pathophysiology of asthma and activation of kinin receptors stimulates neutrophil chemotaxis. However, the expression of kinin receptors on neutrophils of asthmatic subjects has not been assessed. The aim of this study was to compare the expression of kinin B(1) and B(2) receptor mRNA and proteins in neutrophils of asthmatic and non-asthmatic subjects, and to assess whether inhaled corticosteroid treatment may influence expression of the kinin receptors. Neutrophils were isolated from peripheral blood of asthmatic (n=27) and non-asthmatic subjects (n=14). The presence of kinin B(1) and B(2) receptor protein on neutrophils was confirmed by immunolabeling with specific antibodies followed by immunoperoxidase, immunofluorescence and FACS detection. Kinin B(1) and B(2) receptor mRNA expression was assessed by RT-PCR. Quantitative image analysis of fluorescence immunolabeled neutrophils showed no differences in kinin B(1) or B(2) receptor protein expression between asthmatic and non-asthmatic subjects. Similarly, quantitative real time RT-PCR analysis demonstrated no differences in expression of mRNA for the kinin B(1) or B(2) receptors between asthmatic and non-asthmatic subjects. However, B(1) receptor mRNA expression was significantly lower in asthmatic subjects using > or =2000 microg of inhaled corticosteroid per day (p<0.05) and B(1) receptor protein levels also tended to be lower in these subjects. Corticosteroids may have a beneficial anti-inflammatory effect in asthma by down-regulating B(1) receptor expression on neutrophils, thereby decreasing the migration of these inflammatory cells into the airways.
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Affiliation(s)
- Cornelia Bertram
- Lung Institute of Western Australia and Centre for Asthma, Allergy & Respiratory Research, The University of Western Australia, Perth, Australia
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81
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Lauton-Santos S, Guatimosim S, Castro CH, Oliveira FA, Almeida AP, Dias-Peixoto MF, Gomes MA, Pessoa P, Pesquero JL, Pesquero JB, Bader M, Cruz JS. Kinin B1 receptor participates in the control of cardiac function in mice. Life Sci 2007; 81:814-22. [PMID: 17714737 DOI: 10.1016/j.lfs.2007.06.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2007] [Revised: 06/22/2007] [Accepted: 06/29/2007] [Indexed: 10/23/2022]
Abstract
The kinins have an important role in control of the cardiovascular system. They have been associated with protective effects in the heart tissue. Kinins act through stimulation of two 7-transmembrane G protein-coupled receptors, denoted B(1) and B(2) receptors. However, the physiological relevance of B(1) receptor in the heart has not been clearly established. Using B(1) kinin receptor gene knock-out mice we tested the hypothesis that the B(1) receptor plays an important role in the control of baseline cardiac function. We examined the functional aspects of the intact heart and also in the isolated cardiomyocytes to study intracellular Ca(2+) cycling by using confocal microscopy and whole-cell voltage clamp techniques. We measured heart rate, diastolic and systolic tension, contraction and relaxation rates and, coronary perfusion pressure. Whole-cell voltage clamp was performed to measure L-type Ca(2+) current (I(Ca,L)). The hearts from B(1)(-/-) mice showed smaller systolic tension. The average values for WT and B(1)(-/-) mice were 2.6+/-0.04 g vs. 1.6+/-0.08 g, respectively. This result can be explained, at least in part, by the decrease in the Ca(2+) transient (3.1+/-0.06 vs. 3.4+/-0.09 for B(1)(-/-) and WT, respectively). There was an increase in I(Ca,L) at depolarized membrane potentials. Interestingly, the inactivation kinetics of I(Ca,L) was statistically different between the groups. The coronary perfusion pressure was higher in the hearts from B(1)(-/-) mice indicating an increase in coronary resistance. This result can be explained by the significant reduction of eNOS (NOS-3) expression in the aorta of B(1)(-/-) mice. Collectively, our results demonstrate that B(1) receptor exerts a fundamental role in the mammalian cardiac function.
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Affiliation(s)
- Sandra Lauton-Santos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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82
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Cunha TM, Verri WA, Fukada SY, Guerrero ATG, Santodomingo-Garzón T, Poole S, Parada CA, Ferreira SH, Cunha FQ. TNF-alpha and IL-1beta mediate inflammatory hypernociception in mice triggered by B1 but not B2 kinin receptor. Eur J Pharmacol 2007; 573:221-9. [PMID: 17669394 DOI: 10.1016/j.ejphar.2007.07.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2007] [Revised: 06/28/2007] [Accepted: 07/04/2007] [Indexed: 12/16/2022]
Abstract
Kinin receptors are involved in the genesis of inflammatory pain. However, there is controversy concerning the mechanism by which B(1) and B(2) kinin receptors mediate inflammatory hypernociception. In the present study, the role of these receptors on inflammatory hypernociception in mice was addressed. Mechanical hypernociception was detected with an electronic pressure meter paw test in mice and cytokines were measured by ELISA. It was observed that in naïve mice a B(2) (d-Arg-Hyp(3), d-Phe(7)-bradykinin) but not a B(1) kinin receptor antagonist (des-Arg(9)-[Leu(8)]-bradykinin, DALBK) inhibited bradykinin- and carrageenin-induced hypernociception. Bradykinin-induced hypernociception was inhibited by indomethacin (5 mg/kg) and guanethidine (30 mg/kg), while not affected by IL-1ra (10 mg/kg) or antibody against keratinocyte-derived chemokine (KC/CXCL-1, 500 ng/paw) or in TNFR1 knockout mice. By contrast, in previously lipopolysaccharide (LPS)-primed mouse paw, B(1) but not B(2) kinin receptor antagonist inhibited bradykinin hypernociception. Furthermore, B(1) kinin receptor agonist induced mechanical hypernociception in LPS-primed mice, which was inhibited by indomethacin, guanethidine, antiserum against TNF-alpha or IL-1ra. This was corroborated by the induction of TNF-alpha and IL-1beta release by B(1) kinin receptor agonist in LPS-primed mouse paws. Moreover, B(1) but not B(2) kinin receptor antagonist inhibited carrageenin-induced hypernociception, and TNF-alpha and IL-1beta release as well, in LPS-primed mice. These results suggest that in naïve mice the B(2) kinin receptor mediates inflammatory hypernociception dependent on prostanoids and sympathetic amines, through a cytokine-independent mechanism. On the other hand, in LPS-primed mice, the B(1) kinin receptor mediates hypernociception by a mechanism dependent on TNF-alpha and IL-1beta, which could stimulate prostanoid and sympathetic amine production.
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MESH Headings
- Animals
- Antibodies/pharmacology
- Bradykinin/administration & dosage
- Bradykinin/analogs & derivatives
- Bradykinin/pharmacology
- Bradykinin B1 Receptor Antagonists
- Bradykinin B2 Receptor Antagonists
- Bradykinin Receptor Antagonists
- Carrageenan/administration & dosage
- Carrageenan/toxicity
- Dose-Response Relationship, Drug
- Guanethidine/pharmacology
- Hyperalgesia/chemically induced
- Hyperalgesia/physiopathology
- Hyperalgesia/prevention & control
- Indomethacin/pharmacology
- Inflammation/chemically induced
- Inflammation/physiopathology
- Inflammation/prevention & control
- Interleukin-1beta/immunology
- Interleukin-1beta/physiology
- Lipopolysaccharides/pharmacology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Prostaglandins/physiology
- Receptor, Bradykinin B1/agonists
- Receptor, Bradykinin B1/physiology
- Receptor, Bradykinin B2/physiology
- Receptors, Bradykinin/agonists
- Receptors, Bradykinin/physiology
- Receptors, Tumor Necrosis Factor, Type I/genetics
- Receptors, Tumor Necrosis Factor, Type I/physiology
- Tumor Necrosis Factor-alpha/immunology
- Tumor Necrosis Factor-alpha/physiology
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Affiliation(s)
- Thiago M Cunha
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, SP, Brazil
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83
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Shukla AK, Haase W, Reinhart C, Michel H. Functional overexpression and characterization of human bradykinin subtype 2 receptor in insect cells using the baculovirus system. J Cell Biochem 2007; 99:868-77. [PMID: 16721823 DOI: 10.1002/jcb.20976] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Bradykinin exerts its actions via binding to B1 and B2 receptors (B1R and B2R), which are members of G protein-coupled receptor superfamily. B2R is constitutively expressed in a variety of cells such as endothelial cells, vascular smooth muscle cells, and cardiomyocytes and it is an important drug target for the treatment of cardiovascular disorders. During this study, the human B2R was functionally overexpressed in insect cells using the baculovirus expression system. The maximum expression level in Sf9 cells under optimized condition was 10 pmol/mg. This corresponds to approximately 0.25 mg active receptor per liter culture. The recombinant receptor showed high affinity for its endogenous ligand bradykinin, similar to the B2R expressed in native tissues. Functional coupling of the recombinant receptor to the endogenous G alpha(s) protein was demonstrated via cAMP release assay upon agonist stimulation. Confocal laser scanning microscopy and immunogold-labeling experiment revealed that the recombinant B2R was mainly localized intracellularly and only a minor fraction of the recombinant receptor reached the plasma membrane. To our knowledge, this is the first report of high level expression of recombinant B2R in insect cells and provides a way for large scale production and structural characterization of this receptor.
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Affiliation(s)
- Arun Kumar Shukla
- Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max-von-Laue Street 3, 60438 Frankfurt/M, Germany.
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84
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Yu J, Lubinsky D, Tsomaia N, Huang Z, Taylor L, Mierke D, Navarro J, Miraz O, Polgar P. Activation of ERK, JNK, Akt, and G-protein coupled signaling by hybrid angiotensin II AT1/bradykinin B2 receptors expressed in HEK-293 cells. J Cell Biochem 2007; 101:192-204. [PMID: 17212359 DOI: 10.1002/jcb.21161] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Bradykinin (BK) and angiotensin II (AngII) often have opposite roles in cardiovascular diseases. Our aim here was to construct hybrid receptors which bind AngII but signal as BK. Various sequences of the intracellular face of the AngII type I receptor, AT1R, were replaced with corresponding sequences from the bradykinin B2 receptor (BKB2R). The hybrids demonstrated a number of signaling characteristics of the BKB2R. For example, the hybrids demonstrated BK as opposed to AngII like phosphorylation of Akt and JNK. The hybrids containing the BKB2R intracellular loop 2 (IC2) displayed minimal G-protein, Galphai/Galphaq, linked signaling. Computer based molecular models suggested that Ser-Met-Gly from the IC2 of the BKB2R is detrimental for the Galphai/Galphaq coupled functions of this hybrid. The return of Lys-Ser-Arg of the AT1R to this hybrid led to almost full recovery of Galphai and Galphaq activation. The design and production of AT1/BKB2 hybrid receptors is a potential approach in the treatment of hypertension related diseases where the presence of AngII, its AT1 receptor and the consequent signal transduction has proven detrimental.
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MESH Headings
- Amino Acid Sequence
- Arachidonic Acid/metabolism
- Calcium/metabolism
- Cell Line
- Enzyme Activation
- Extracellular Signal-Regulated MAP Kinases/metabolism
- GTP-Binding Proteins/metabolism
- Humans
- Kinetics
- Ligands
- MAP Kinase Kinase 4/metabolism
- Models, Molecular
- Molecular Sequence Data
- Mutagenesis, Site-Directed
- Phosphatidylinositols/metabolism
- Phosphorylation
- Protein Binding
- Protein Structure, Secondary
- Protein Structure, Tertiary
- Proto-Oncogene Proteins c-akt/metabolism
- Receptor, Angiotensin, Type 1/chemistry
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/metabolism
- Receptor, Bradykinin B2/chemistry
- Receptor, Bradykinin B2/genetics
- Receptor, Bradykinin B2/metabolism
- Sequence Analysis, DNA
- Signal Transduction
- Transfection
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Affiliation(s)
- Jun Yu
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts 02118, USA
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85
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Medeiros R, Passos GF, Vitor CE, Koepp J, Mazzuco TL, Pianowski LF, Campos MM, Calixto JB. Effect of two active compounds obtained from the essential oil of Cordia verbenacea on the acute inflammatory responses elicited by LPS in the rat paw. Br J Pharmacol 2007; 151:618-27. [PMID: 17471174 PMCID: PMC2013990 DOI: 10.1038/sj.bjp.0707270] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND AND PURPOSE alpha-Humulene and trans-caryophyllene are sesquiterpene compounds identified in the essential oil of Cordia verbenacea which display topical and systemic anti-inflammatory effects in different experimental models. However, the molecular mechanisms through which they exert their anti-inflammatory activity still remain unclear. Here, we evaluate the effects of alpha-humulene and trans-caryophyllene on the acute inflammatory responses elicited by LPS. EXPERIMENTAL APPROACH The biological activities of alpha-humulene and trans-caryophyllene were investigated in a model of acute inflammation in rat paw, induced by LPS and characterized by paw oedema, neutrophil recruitment, cytokine production, activation of MAP kinases and NF-kappaB and up-regulated expression of kinin B(1) receptors. KEY RESULTS Treatment with either alpha-humulene or trans-caryophyllene effectively reduced neutrophil migration and activation of NF-kappaB induced by LPS in the rat paw. However, only alpha-humulene significantly reduced the increase in TNF-alpha and IL-1beta levels, paw oedema and the up-regulation of B(1) receptors following treatment with LPS. Both compounds failed to interfere with the activation of the MAP kinases, ERK, p38 and JNK. CONCLUSIONS AND IMPLICATIONS Both alpha-humulene and trans-caryophyllene inhibit the LPS-induced NF-kappaB activation and neutrophil migration, although only alpha-humulene had the ability to prevent the production of pro-inflammatory cytokines TNF-alpha and IL-1beta and the in vivo up-regulation of kinin B(1) receptors. These data provide additional molecular and functional insights into the beneficial effects of the sesquiterpenes alpha-humulene and trans-caryophyllene isolated from the essential oil of Cordia verbenacea as agents for the management of inflammatory diseases.
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Affiliation(s)
- R Medeiros
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
| | - G F Passos
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
| | - C E Vitor
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
| | - J Koepp
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
| | - T L Mazzuco
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
| | - L F Pianowski
- Rua Setúbal, Residencial Euroville Bragança Paulista, São Paulo, Brazil
| | - M M Campos
- Escola de Odontologia, Pontifícia Universidade Católica do Rio Grande do Sul Rio Grande do Sul, Brazil
| | - J B Calixto
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina Santa Catarina, Brazil
- Author for correspondence:
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86
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Brechter AB, Lerner UH. Bradykinin potentiates cytokine-induced prostaglandin biosynthesis in osteoblasts by enhanced expression of cyclooxygenase 2, resulting in increased RANKL expression. ACTA ACUST UNITED AC 2007; 56:910-23. [PMID: 17328065 DOI: 10.1002/art.22445] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Bradykinin (BK) stimulates bone resorption in vitro and synergistically potentiates interleukin-1 (IL-1)-induced bone resorption and prostaglandin (PG) formation, suggesting that kinins are important in inflammation-induced bone loss. The present study was undertaken to study 1) the role of the kinin B1 and B2 receptors in the synergistic interaction with IL-1 and tumor necrosis factor alpha (TNFalpha), 2) the molecular mechanisms involved in synergistic enhancement of PG formation, and 3) the effects of kinins on cytokine-induced expression of RANKL, RANK, and osteoprotegerin (OPG) (the latter being crucial molecules in osteoclast differentiation). METHODS Formation of PGs, expression of enzymes involved in arachidonic acid metabolism, and expression of RANKL, RANK, and OPG were assessed in the human osteoblastic cell line MG-63 and in mouse calvarial bones. The role of NF-kappaB and MAP kinases was studied using pharmacologic inhibitors. RESULTS PGE(2) formation and cyclooxygenase 2 (COX-2) protein expression were induced by IL-1beta and potentiated by kinins with affinity for the B1 or B2 receptors, resulting in PGE(2)-dependent enhancement of RANKL. The enhancements of PGE(2) formation and COX-2 were markedly decreased by inhibition of p38 and JNK MAP kinases, whereas inhibition of NF-kappaB resulted in abolishment of the PGE(2) response with only slight inhibition of COX-2. CONCLUSION Kinin B1 and B2 receptors synergistically potentiate IL-1- and TNFalpha-induced PG biosynthesis in osteoblasts by a mechanism involving increased levels of COX-2, resulting in increased RANKL. The synergistic stimulation is dependent on NF-kappaB and MAP kinases. These mechanisms might help to explain the enhanced bone resorption associated with inflammatory disorders, including that in rheumatoid arthritis.
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87
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Petrovic N, Schacke W, Gahagan JR, O'Conor CA, Winnicka B, Conway RE, Mina-Osorio P, Shapiro LH. CD13/APN regulates endothelial invasion and filopodia formation. Blood 2007; 110:142-50. [PMID: 17363739 PMCID: PMC1896108 DOI: 10.1182/blood-2006-02-002931] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
CD13/aminopeptidase N is a transmembrane peptidase that is induced in the vasculature of solid tumors and is a potent angiogenic regulator. Here, we demonstrate that CD13 controls endothelial cell invasion in response to the serum peptide bradykinin by facilitating signal transduction at the level of the plasma membrane. Inhibition of CD13 abrogates bradykinin B(2) receptor internalization, leading to the attenuation of downstream events such as bradykinin-induced activation of Cdc42 and filopodia formation, and thus affects endothelial cell motility. Investigation into mechanisms underlying this block led us to focus on B(2)R internalization via membrane-dependent mechanisms. Membrane disruption by depletion of cholesterol or trypsinization halts B(2)R internalization, invasion, and filopodia formation, which can be recovered with addition of cholesterol. However, this functional recovery is severely impaired in the presence of CD13 antagonists, and the distribution of membrane proteins is disordered in treated cells, suggesting a role for CD13 in plasma membrane protein organization. Finally, exogenous expression of wild-type but not mutant CD13 further alters protein distribution, suggesting peptidase activity is required for CD13's regulatory activity. Therefore, CD13 functions as a novel modulator of signal transduction and cell motility via its influence on specific plasma membrane organization, thus regulating angiogenesis.
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Affiliation(s)
- Nenad Petrovic
- Department of Cell Biology, Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030-3501, USA
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88
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Murakami M, Ohta T, Otsuguro KI, Ito S. Involvement of prostaglandin E(2) derived from enteric glial cells in the action of bradykinin in cultured rat myenteric neurons. Neuroscience 2007; 145:642-53. [PMID: 17275193 DOI: 10.1016/j.neuroscience.2006.12.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Revised: 12/11/2006] [Accepted: 12/12/2006] [Indexed: 11/30/2022]
Abstract
We characterized bradykinin (BK)-induced changes in the intracellular Ca(2+) concentration ([Ca(2+)]i) and membrane potential in cultured rat myenteric neurons using ratiometric Ca(2+) imaging with fura-2 and the whole-cell patch-clamp technique, respectively. BK evoked a dose-dependent increase of [Ca(2+)]i that was abolished by HOE 140, a B2 receptor antagonist but not by [Lys-des-Arg(9)]-BK, a B1 receptor antagonist. [Lys-des-Arg(9)]-HOE140, a B1 receptor agonist, failed to cause a [Ca(2+)]i response. Double staining with antibodies against the B2 receptor together with PGP9.5 or S100 indicated that B2 receptors were expressed in neurons and glial cells. The BK-evoked [Ca(2+)]i increase was suppressed by indomethacin, a non-selective cyclooxygenase (COX) inhibitor, and potentiated by prostaglandin E(2) (PGE(2)). The release of PGE(2) from cultured myenteric plexus cells was increased by BK. BK induced a large increase in [Ca(2+)]i in neurons when myenteric plexus cells were cultured at the high density but not at the low density, and caused a small increase in [Ca(2+)]i in neurons when proliferation of enteric glial cells was suppressed. BK evoked a slow and sustained depolarization in myenteric neurons, which was sensitive to indomethacin. These results indicated that BK caused a [Ca(2+)]i increase and depolarization in rat myenteric neurons through the activation of B2 receptors, which was partly associated with PGE(2) released from glial cells in response to BK. It is suggested that a neuron-glial interaction plays an important role in the effect of BK in the rat myenteric plexus.
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Affiliation(s)
- M Murakami
- Laboratory of Pharmacology, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, N18W9, Sapporo 060-0818, Japan
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89
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Kozaki Y, Kambe F, Hayashi Y, Ohmori S, Seo H, Kumazawa T, Mizumura K. Molecular cloning of prostaglandin EP3 receptors from canine sensory ganglia and their facilitatory action on bradykinin-induced mobilization of intracellular calcium. J Neurochem 2006; 100:1636-47. [PMID: 17176262 DOI: 10.1111/j.1471-4159.2006.04320.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We previously demonstrated that the activation of prostaglandin E-prostanoid-3 (EP3) receptor sensitized the canine nociceptor response to bradykinin (BK). To elucidate the molecular mechanism for this sensitization, we cloned two cDNAs encoding EP3s with different C-terminals, from canine dorsal root ganglia, and established the transformed cell lines stably expressing them. In both transformants, EP3 agonist did not increase intracellular cAMP levels, but it attenuated forskolin-dependent cAMP accumulation in a pertussis toxin (PTX)-sensitive manner and increased intracellular calcium levels in a PTX-resistant manner, indicating that both EP3s can couple with Gi and Gq, but not with Gs proteins. As the nociceptor response to BK is mediated by BK B2 receptor, it was transfected into the transformants and the effects of EP3 agonist on BK-dependent calcium mobilization were investigated. When BK was applied twice with a 6-min interval, the second response was markedly attenuated. Pre-treatment with EP3 agonist had no effect on the initial response, but restored the second response in a PTX-sensitive manner. A protein kinase A inhibitor mimicked the effect of EP3 agonist. These results demonstrate that the activation of EP3 restores the response to BK by attenuating the desensitization of BK B2 receptor activity via Gi protein.
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Affiliation(s)
- Yasuko Kozaki
- Division of Stress Recognition and Response, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
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90
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Zhou HY, Zhang HM, Chen SR, Pan HL. Increased nociceptive input rapidly modulates spinal GABAergic transmission through endogenously released glutamate. J Neurophysiol 2006; 97:871-82. [PMID: 17108089 DOI: 10.1152/jn.00964.2006] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Stimulation of nociceptive primary afferents elicits pain by promoting glutamatergic transmission in the spinal cord. Little is known about how increased nociceptive input controls GABAergic tone in the spinal dorsal horn. In this study, we determined how increased nociceptive inflow affects GABAergic spontaneous inhibitory postsynaptic currents (sIPSCs) of lamina II neurons by using whole cell recordings in rat spinal cord slices. Bath application of capsaicin for 3 min induced a long-lasting inhibition of sIPSCs in 50% of the neurons tested. In the other half of the neurons, capsaicin either increased the frequency of sIPSCs (34.6%) or had no effect on sIPSCs (15.4%). The GABA(A) current elicited by puff application of GABA was not altered by capsaicin. Capsaicin did not inhibit sIPSCs in rats treated with intrathecal pertussis toxin. Also, capsaicin failed to inhibit sIPSCs in the presence of ionotropic glutamate receptor antagonists or in the presence of both LY341495 and CPPG (group II and group III metabotropic glutamate receptor antagonists, respectively). However, when LY341495 or CPPG was used alone, capsaicin still decreased the frequency of sIPSCs in some neurons. Additionally, bradykinin significantly inhibited sIPSCs in a population of lamina II neurons and this inhibitory effect was also abolished by LY341495 and CPPG. Our study provides novel information that stimulation of nociceptive primary afferents rapidly suppresses GABAergic input to many dorsal horn neurons through endogenous glutamate and activation of presynaptic group II and group III metabotropic glutamate receptors. These findings extend our understanding of the microcircuitry of the spinal dorsal horn involved in nociception.
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Affiliation(s)
- Hong-Yi Zhou
- Department of Anesthesiology and Pain Medicine, Unit 409, The University of Texas M. D. Anderson Cancer Center, 1400 Holcombe Blvd., Houston, TX 77030, USA
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91
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Aptecar E, Lecorvoisier P, Teiger E, Garot P, Dupouy P, Sediame S, Vermes E, Loisance D, Hittinger L, Dubois-Rande JL, Montagne O. Coronary vasomotor response to the selective B1-kinin-receptor agonist Des-Arg9-bradykinin in humans. J Heart Lung Transplant 2006; 25:187-94. [PMID: 16446219 DOI: 10.1016/j.healun.2005.08.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2004] [Revised: 08/24/2005] [Accepted: 08/29/2005] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES The aim of the present study was to assess the effects of selective B1-receptor stimulation with des-Arg9-bradykinin on coronary vasomotion in transplanted and non-transplanted patients. BACKGROUND Bradykinin B1-receptors have been identified on endothelial and smooth muscle cells in human coronary arteries in vitro; however, their physiologic role in the coronary circulation is unknown. METHODS Twelve heart transplant patients were compared with 10 control subjects at 3.2 +/- 2.2 months after surgery. Coronary flow velocity was measured using guide-wire Doppler. The diameter of 3 epicardial segments of the left coronary artery and coronary blood flow were assessed at baseline, immediately after infusions of increasing doses of des-arginine(Arg9)-bradykinin at estimated coronary blood concentrations of 5.4 x 10(-9), 5.4 x 10(-8), 5.4 x 10(-7) and 1.6 x 10(-6) mol/liter, and of acetylcholine at 10(-8), 10(-7) and 10(-6) mol/liter). RESULTS Des-Arg9-bradykinin induced a similar decrease in all measured epicardial diameters in both groups and no change in coronary blood flow. Vasoconstriction was significant only at the 2 highest concentrations: -6 +/- 9% (p < 0.01) and -7 +/- 11% (p < 0.01) in control subjects, and -8 +/- 8% (p < 0.001) and -9 +/- 11% (p < 0.001) in heart transplant patients. Acetylcholine induced significant epicardial vasodilation in control subjects and vasoconstriction in transplant patients. The presence of allograft rejection did not modify the responses to des-Arg9-bradykinin with regard to both conductance and resistance vessels. CONCLUSIONS Kinin B1-receptors exist and can be stimulated in humans. The vasoconstrictive action on epicardial coronary arteries of des-Arg(9)-bradykinin in humans argues for a predominant action of B1-receptor stimulation at the level of smooth muscle cells.
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MESH Headings
- Acetylcholine/pharmacology
- Adult
- Blood Flow Velocity/drug effects
- Blood Flow Velocity/physiology
- Bradykinin/analogs & derivatives
- Bradykinin/pharmacology
- Coronary Angiography
- Coronary Vessels/drug effects
- Coronary Vessels/physiology
- Dose-Response Relationship, Drug
- Endothelium, Vascular/chemistry
- Endothelium, Vascular/physiology
- Female
- Heart Transplantation/physiology
- Hemodynamics/physiology
- Humans
- Male
- Middle Aged
- Molsidomine/analogs & derivatives
- Molsidomine/pharmacology
- Muscle, Smooth, Vascular/chemistry
- Muscle, Smooth, Vascular/physiology
- Receptor, Bradykinin B1/agonists
- Receptor, Bradykinin B1/analysis
- Receptor, Bradykinin B1/physiology
- Receptor, Bradykinin B2/agonists
- Receptor, Bradykinin B2/analysis
- Receptor, Bradykinin B2/physiology
- Vasoconstriction/drug effects
- Vasoconstriction/physiology
- Vasodilation/drug effects
- Vasodilation/physiology
- Vasodilator Agents/pharmacology
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Affiliation(s)
- Eduardo Aptecar
- Fédération de Cardiologie-Hôpital Henri Mondor, INSERM-U400, Créteil, France.
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92
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Liu B, Yu J, Taylor L, Zhou X, Polgar P. Microarray and phosphokinase screenings leading to studies on ERK and JNK regulation of connective tissue growth factor expression by angiotensin II 1a and bradykinin B2 receptors in Rat1 fibroblasts. J Cell Biochem 2006; 97:1104-20. [PMID: 16294326 DOI: 10.1002/jcb.20709] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Rat1 fibroblasts stably transfected with the rat angiotensin II (AngII) AT1a and bradykinin (BK) B2 receptor cDNAs gained the ability to bind Ang II and BK. Wild-type Rat1 cells bound neither ligand. Exposure to either effector led to characteristic Galphai and Galphaq signal cascades, the release of arachidonic acid (ARA), and the intracellular accumulation of inositol phosphates (IP). Microarray analyses in response to BK or AngII showed that both receptors markedly induce the CCN family genes, CTGF (CCN2) and Cyr61 (CCN1), as well as the vasculature-related genes, Cnn1 and Egr1. Real time PCR confirmed the increased expression of connective tissue growth factor (CTGF) mRNA. Combined sequence-based analysis of gene promoter regions with statistical prevalence analyses identified CREB, SRF, and ATF-1, downstream targets of ERK, and JNK, as prominent products of genes that are regulated by ligand binding to the BK or AngII receptors. The binding of AngII or BK markedly stimulated the phosphorylation and thus the activation of ERK2, JNK, and p38MAPK. A BKB2R and an AT1aR chimera which displayed only negligible G-protein-related signaling were constructed. Both mutant receptors continued to activate these kinases and stimulate CTGF expression. Inhibitors of ERK1/2 and JNK but not p38MAPK inhibited the BK- and AngII-stimulated expression of CTGF in cells expressing either the WT or mutant receptors, illustrating that ERK and JNK participate in the control of CTGF expression in a manner that appears to be independent of G-protein. Conversely, addition of BK or AngII to the cell line expressing WT AT1aR and BKB2R downregulated the expression of collagen alpha1(I) (COL1A1) mRNA. However, these effectors did not have this effect in cells expressing the mutant receptors. Thus, a robust G-protein related response is necessary for BK or AngII to affect COL1A1 expression.
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Affiliation(s)
- B Liu
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts 02118, USA
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93
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Bengtson SH, Phagoo SB, Norrby-Teglund A, Påhlman L, Mörgelin M, Zuraw BL, Leeb-Lundberg LMF, Herwald H. Kinin receptor expression during Staphylococcus aureus infection. Blood 2006; 108:2055-63. [PMID: 16735595 PMCID: PMC1895540 DOI: 10.1182/blood-2006-04-016444] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
An inappropriate host response to invading bacteria is a critical parameter that often aggravates the outcome of an infection. Staphylococcus aureus is a major human Gram-positive pathogen that causes a wide array of community- and hospital-acquired diseases ranging from superficial skin infections to severe conditions such as staphylococcal toxic shock. Here we find that S aureus induces inflammatory reactions by modulating the expression and response of the B1 and B2 receptors, respectively. This process is initiated by a chain of events, involving staphylococcal-induced cytokine release from monocytes, bacteria-triggered contact activation, and conversion of bradykinin to its metabolite desArg(9)bradykinin. The data of the present study implicate an important and previously unknown role for kinin receptor regulation in S aureus infections.
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Affiliation(s)
- Sara H Bengtson
- Department of Clinical Sciences, Section for Clinical and Experimental Infection Medicine, Lund University, Tornavägen 10, SE-221 84 Lund, Sweden
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94
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Hirate K, Uchida A, Ogawa Y, Arai T, Yoda K. Zaltoprofen, a non-steroidal anti-inflammatory drug, inhibits bradykinin-induced pain responses without blocking bradykinin receptors. Neurosci Res 2006; 54:288-94. [PMID: 16473424 DOI: 10.1016/j.neures.2005.12.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Accepted: 12/16/2005] [Indexed: 01/03/2023]
Abstract
Zaltoprofen, a preferential COX-2 inhibitor, exhibited a potent inhibitory action on the nociceptive responses induced by a retrograde infusion of bradykinin into the right common carotid artery in rats. However, other COX-2 preferential inhibitors such as meloxicam and etodolac did not exhibit any apparent action, and also, preferential COX-1 inhibitors mofezolac and indomethacin, COX-1 and COX-2 inhibitor loxoprofen sodium showed a weak effect. These non-steroidal anti-inflammatory drugs (NSAIDs) except for zaltoprofen, strongly inhibited an acetic acid-induced writhing response related to PGs based on COX-1, at lower doses. Zaltoprofen had a moderate inhibitory effect compared with those of the above-mentioned NSAIDs. These results suggest that the inhibitory effect of zaltoprofen on bradykinin-induced nociceptive responses is not explainable by the inhibition of cyclooxygenase (COX). So, we examined the inhibitory effect of zaltoprofen on bradykinin-induced nociceptive responses by performing several in vitro experiments. Zaltoprofen did not bind to B(1) and B(2) receptors in a radio-ligand binding assay. In the cultured dorsal root ganglion cells of mature mice, zaltoprofen completely inhibited the bradykinin-induced increase of [Ca(2+)](i), which was inhibited by B(2) antagonist D-Arg-[Hyp(3), Thi(5,8), D-Phe(7)]-bradykinin, but not by B(1) antagonist. In addition, the inhibition of zaltoprofen on the increase of [Ca(2+)](i) was observed even under extracellular Ca(2+)-free conditions. The above results suggest that zaltoprofen produces an analgesic action on bradykinin-induced nociceptive responses by blocking the B(2) receptor-mediated pathway in the primary sensory neurons. Taken together, these results suggest that zaltoprofen may serve as a potent and superior analgesic for the treatment of pain.
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Affiliation(s)
- Kenji Hirate
- Research Laboratories, Nippon Chemiphar Co. Ltd., Misato, Japan.
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95
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Wang H, Kohno T, Amaya F, Brenner GJ, Ito N, Allchorne A, Ji RR, Woolf CJ. Bradykinin produces pain hypersensitivity by potentiating spinal cord glutamatergic synaptic transmission. J Neurosci 2006; 25:7986-92. [PMID: 16135755 PMCID: PMC6725443 DOI: 10.1523/jneurosci.2393-05.2005] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bradykinin, an inflammatory mediator, sensitizes nociceptor peripheral terminals reducing pain threshold. We now show that the B2 kinin receptor is expressed in rat dorsal horn neurons and that bradykinin, a B2-specific agonist, augments AMPA- and NMDA-induced, and primary afferent-evoked EPSCs, and increases the frequency and amplitude of miniature EPSCs in superficial dorsal horn neurons in vitro. Administration of bradykinin to the spinal cord in vivo produces, moreover, an NMDA-dependent hyperalgesia. We also demonstrate that nociceptive inputs result in the production of bradykinin in the spinal cord and that an intrathecal B2-selective antagonist suppresses behavioral manifestations of central sensitization, an activity-dependent increase in glutamatergic synaptic efficacy. Primary afferent-evoked central sensitization is, in addition, reduced in B2 receptor knock-out mice. We conclude that bradykinin is released in the spinal cord in response to nociceptor inputs and acts as a synaptic neuromodulator, potentiating glutamatergic synaptic transmission to produce pain hypersensitivity.
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Affiliation(s)
- Haibin Wang
- Department of Anesthesia and Critical Care, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA
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96
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Rong Zhou J, Shirasaki T, Soeda F, Takahama K. Potentiation of nicotinic currents by bradykinin in the paratracheal ganglia neurons of rats. Eur J Pharmacol 2006; 531:96-102. [PMID: 16442093 DOI: 10.1016/j.ejphar.2005.12.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2005] [Revised: 11/29/2005] [Accepted: 12/12/2005] [Indexed: 11/28/2022]
Abstract
The effects of bradykinin on nicotine-induced responses were investigated in neurons dissociated from rat paratracheal ganglia using the nystatin-perforated patch-clamp recording technique. When bradykinin (10(-9) to 10(-8) M) was pretreated and then simultaneously applied with 10(-5) M nicotine, bradykinin potentiated the nicotine-induced currents. The potentiation was mimicked by [Hyp3]-bradykinin and inhibited by HOE-140, pertussis toxin, neomycin and U-73122, but not U-73433. These results suggest that bradykinin potentiates nicotinic currents via bradykinin B2 receptor, pertussis toxin-sensitive G-protein and phospholipase C. Since bradykinin inhibits the M-current via bradykinin B2 receptor and pertussis toxin-insensitive G-protein [Mochidome, T., Ishibashi, H., Takahama, K., 2001. Bradykinin activates airway parasympathetic ganglion neurons by inhibiting M-currents. Neuroscience 105, 785-791.], it seemed that bradykinin B2 receptor activated two distinct signal transduction pathways in the paratracheal ganglia neurons. This effect of bradykinin might cause enhanced synaptic transmission in paratracheal ganglia neurons and contribute to the aggravation of pathological conditions of the lower airway via enhanced acetylcholine release from the postganglionic nerve terminals.
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Affiliation(s)
- Jian Rong Zhou
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto 862-0973, Japan
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97
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Ueda H. Molecular mechanisms of neuropathic pain–phenotypic switch and initiation mechanisms. Pharmacol Ther 2006; 109:57-77. [PMID: 16023729 DOI: 10.1016/j.pharmthera.2005.06.003] [Citation(s) in RCA: 170] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2005] [Accepted: 06/06/2005] [Indexed: 12/29/2022]
Abstract
Many known painkillers are not always effective in the therapy of chronic neuropathic pain manifested by hyperalgesia and tactile allodynia. The mechanisms underlying neuropathic pain appear to be complicated and to differ from acute and inflammatory pain. Recent advances in pain research provide us with a clear picture for the molecular mechanisms of acute pain, and substantial information is available concerning the plasticity that occurs under conditions of neuropathic pain. The most important changes responsible for the mechanisms of neuropathic pain are found in the altered gene/protein expression in primary sensory neurons. After damage to peripheral sensory fibers, up-regulated expression of the Ca(v)alpha(2)delta-(1) channel subunit, the Na(v)1.3 sodium channel, and bradykinin (BK) B1 and capsaicin TRPV1 receptors in myelinated neurons contribute to hyperalgesia; while the down-regulation of the Na(v)1.8 sodium channel, B2 receptor, substance P (SP), and even mu-opioid receptors in unmyelinated neurons is responsible for the phenotypic switch in pain transmission. Clarification of the molecular mechanisms for such complicated plasticity would be extremely valuable when considering the therapeutic design of pain relieving drugs. Although many reports deal with the changes in expression of key molecules related to neuropathic pain, the initiation and the mechanisms that follow remain to be determined. The current study using lysophosphatidic acid (LPA) receptor knockout mice revealed that LPA produced by nerve injury initiates neuropathic pain and demyelination following partial sciatic nerve ligation (PSNL). A single injection of LPA was found to mimic PSNL in terms of neuropathic pain and its underlying mechanisms. This discovery may lead to the subsequent discovery of LPA-induced secondary genes, which would be therapeutic targets for neuropathic pain.
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Affiliation(s)
- Hiroshi Ueda
- Division of Molecular Pharmacology and Neuroscience, Nagasaki University Graduate School of Biomedical Sciences, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
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98
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Giusti B, Serratì S, Margheri F, Papucci L, Rossi L, Poggi F, Magi A, Del Rosso A, Cinelli M, Guiducci S, Kahaleh B, Matucci-Cerinic M, Abbate R, Fibbi G, Del Rosso M. The antiangiogenic tissue kallikrein pattern of endothelial cells in systemic sclerosis. ACTA ACUST UNITED AC 2005; 52:3618-28. [PMID: 16255054 DOI: 10.1002/art.21383] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Postnatal angiogenesis relies on a proper response of endothelial cells to angiogenic stimuli. In systemic sclerosis (SSc), endothelial cells are unresponsive to angiogenic factors. Since circumstantial and experimental evidence points to tissue kallikreins as powerful effectors of the angiogenic response, we undertook this study to investigate the kallikrein pattern of normal and SSc endothelial cells in order to identify differences that can account for defective angiogenesis. METHODS Expression of 14 tissue kallikreins was studied by a microarray approach, by reverse transcription-polymerase chain reaction, and by Western blotting in endothelial cells isolated from the skin of clinically healthy subjects and SSc patients. Cell proliferation was quantified by direct cell counting. Invasion and capillary morphogenesis were evaluated in a Boyden chamber and in culture flasks layered with Matrigel. Cyclic nucleotide production was measured by enzyme immunoassay. MAP kinase and ERK activation were measured by Western blotting. RESULTS Endothelial cells from SSc patients showed poor expression of kallikreins 9, 11, and 12 compared with endothelial cells from normal subjects. Antibodies against the relevant kallikreins on normal endothelial cells revealed that while kallikreins 9, 11, and 12 induced cell growth, only kallikrein 12 regulated invasion and capillary morphogenesis. Buffering of kallikrein 12 with antibodies resulted in the acquisition of an SSc-like pattern by normal cells in in vitro angiogenesis. Reduction of cAMP and cGMP production and of ERK phosphorylation upon administration of antikallikrein antibodies revealed that the activity of kallikreins 9, 11, and 12 was mediated by kinins. CONCLUSION Reduction of tissue kallikreins 9, 11, and 12 may be relevant to reduced angiogenesis in SSc patients.
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MESH Headings
- Antibodies, Blocking/pharmacology
- Blotting, Western
- Cell Count
- Cell Proliferation
- Cells, Cultured
- Endothelial Cells/cytology
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Extracellular Signal-Regulated MAP Kinases/metabolism
- Female
- Gene Expression Profiling
- Gene Expression Regulation
- Humans
- Male
- Microcirculation/cytology
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Nucleotides, Cyclic/metabolism
- Oligonucleotide Array Sequence Analysis
- Phosphorylation
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Scleroderma, Systemic/metabolism
- Scleroderma, Systemic/pathology
- Scleroderma, Systemic/physiopathology
- Skin/blood supply
- Tissue Kallikreins/genetics
- Tissue Kallikreins/immunology
- Tissue Kallikreins/metabolism
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Affiliation(s)
- Betti Giusti
- Department of Experimental Pathology and Oncology, University of Florence, Viale G M Morgagni 50, 50134 Florence, Italy
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99
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Ignjacev-Lazich I, Kintsurashvili E, Johns C, Vitseva O, Duka A, Shenouda S, Gavras I, Gavras H. Angiotensin-converting enzyme regulates bradykinin receptor gene expression. Am J Physiol Heart Circ Physiol 2005; 289:H1814-20. [PMID: 16219810 DOI: 10.1152/ajpheart.00581.2005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The angiotensin-converting enzyme (ACE) is a membrane-bound peptidyl dipeptidase known to act on a variety of peptide substrates in the extracellular space. Its most notable functions are the formation of angiotensin II and the degradation of bradykinin. In the current experiments, we found that exogenous ACE added to vascular smooth muscle cell culture strongly induces and upregulates the genes of bradykinin receptors B1 and B2. This transcriptional regulatory property of ACE was shown to be unrelated to its known enzymatic properties. Indeed, ACE at 3.75 microg/ml added in the culture medium of vascular smooth muscle cells was found to cause marked upregulation of the mRNA expression of the genes for the B1 and B2 receptors of bradykinin by 22- and 11-fold, respectively. This phenomenon was not altered by the addition of specific angiotensin II antagonists for the AT1 or AT2 receptors. Moreover, the ACE inhibitor captopril, which inhibited ACE enzymatic activity, did not block its effect at the bradykinin receptor gene transcription level. Expression of both receptor genes was completely abolished by actinomycin D. Furthermore, transcriptional upregulation was inhibited by curcumin, suggesting involvement of different transcriptional factors in this phenomenon. Electrophoretic mobility shift assay revealed increase in NF-kappaB and activator protein-1 protein binding for consensus sequences, between ACE-treated cells versus untreated cells. The data indicate a novel biological function of the ACE unrelated to its well-known enzymatic function as a peptidyl dipeptidase.
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MESH Headings
- Angiotensin II Type 1 Receptor Blockers/pharmacology
- Animals
- Blotting, Western
- Cell Nucleus/chemistry
- Cells, Cultured
- Cyclic AMP/metabolism
- Electrophoretic Mobility Shift Assay
- Gene Expression Regulation/physiology
- Male
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- NF-kappa B/metabolism
- Peptidyl-Dipeptidase A/physiology
- RNA/biosynthesis
- RNA/isolation & purification
- Rats
- Rats, Wistar
- Receptor, Bradykinin B1/biosynthesis
- Receptor, Bradykinin B1/genetics
- Receptor, Bradykinin B2/biosynthesis
- Receptor, Bradykinin B2/genetics
- Receptors, Bradykinin/biosynthesis
- Receptors, Bradykinin/genetics
- Transcription Factor AP-1/metabolism
- Up-Regulation
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Affiliation(s)
- Ivana Ignjacev-Lazich
- Hypertension & Atherosclerosis Section, Boston Univ. School of Medicine, 715 Albany St., Boston, MA, USA
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100
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Bernstein KE, Xiao HD, Frenzel K, Li P, Shen XZ, Adams JW, Fuchs S. Six truisms concerning ACE and the renin-angiotensin system educed from the genetic analysis of mice. Circ Res 2005; 96:1135-44. [PMID: 15947253 DOI: 10.1161/01.res.0000169536.73576.66] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kenneth E Bernstein
- Department of Pathology and Laboratory of Medicine, Emory University, Atlanta, GA 30322, USA.
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