1
|
Nikolouli E, Mommert S, Dawodu DM, Schaper-Gerhardt K, Stark H, Dittrich-Breiholz O, Gutzmer R, Werfel T. The stimulation of TH2 cells results in increased IL-5 and IL-13 production via the H 4 receptor. Allergy 2024. [PMID: 38853666 DOI: 10.1111/all.16182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 04/22/2024] [Accepted: 05/08/2024] [Indexed: 06/11/2024]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic inflammatory skin disease resulting in decreased quality of life. Histamine and specifically the H4 receptor play a key role in the inflammatory process in AD and serve as targets for novel therapeutic approaches. OBJECTIVE In the present study we aimed to elucidate the immunopathological mechanisms with which the H4 receptor impacts TH2 cells and contributes to AD pathophysiology. METHODS Total CD4+ T cells obtained from healthy or AD individuals and in vitro differentiated TH2 cells were cultured under different conditions and the mRNA expression or protein production of target molecules were determined using quantitative real-time PCR and ELISA. RESULTS H4 receptor mRNA expression was upregulated concentration dependent upon IL-4 stimulation in in vitro differentiated TH2 cells progressively during the differentiation. Transcriptomic analysis of in vitro differentiated TH2 versus TH1 cells revealed that the H4 receptor among other genes represents one of the highly upregulated genes in TH2 cells. Most importantly, increased amounts of IL-5 and IL-13 mRNA expression were detected in in vitro differentiated TH2 cells as well as protein secretion in the presence of histamine or of the H4 receptor-selective-agonist when compared to the untreated control. CONCLUSION We show for the first time an H4 receptor dependent upregulation of the pro-inflammatory cytokines IL-5 and IL-13 in human TH2 cells by histamine. This suggests that the blockade of the H4 receptor may lead to downregulation of these cytokines and amelioration of AD symptoms as reported in first clinical studies.
Collapse
Affiliation(s)
- Eirini Nikolouli
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Susanne Mommert
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | | | - Katrin Schaper-Gerhardt
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
- Department of Dermatology, Johannes Wesling Medical Center, Ruhr University Bochum Campus Minden, Minden, Germany
| | - Holger Stark
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | | | - Ralf Gutzmer
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
- Department of Dermatology, Johannes Wesling Medical Center, Ruhr University Bochum Campus Minden, Minden, Germany
| | - Thomas Werfel
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| |
Collapse
|
2
|
Pfanzagl B, Pfragner R, Jensen-Jarolim E. Histamine via histamine H1 receptor enhances the muscarinic receptor-induced calcium response to acetylcholine in an enterochromaffin cell model. Clin Exp Pharmacol Physiol 2022; 49:1059-1071. [PMID: 35652717 PMCID: PMC9546423 DOI: 10.1111/1440-1681.13682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 05/12/2022] [Accepted: 05/30/2022] [Indexed: 11/28/2022]
Abstract
As a prerequisite for serotonin secretion, the P‐STS ileal enterochromaffin cell line responds to acetylcholine (ACh) stimulation with an increase in intracellular calcium mediated by the muscarinic ACh receptor M3 (M3R). Histamine increases intracellular calcium via histamine H1 receptor (H1R) in P‐STS cells and pre‐incubation with histamine specifically augments the response to ACh but not to epinephrine or nicotine. We aimed to elucidate whether histamine receptors are involved in this synergism. Astonishingly, HEK‐293 T cells—known to express M3R, but only a very low amount of histamine receptor messenger RNA—showed a similar enhancement of the calcium response to ACh by pre‐incubation with histamine. Despite the much lower level of H1R protein detected in HEK‐293 T cells as compared to P‐STS cells, in both cell lines pre‐treatment with H1R antagonists inhibited the synergism between histamine and ACh. No indication for an involvement of histamine H2 or H4 receptors in the synergism was found. Furthermore, pre‐incubation with the cAMP‐inducing compound forskolin had no influence on the intracellular calcium response to ACh. Serotonin secretion from P‐STS cells was increased after challenge with ACh and histamine added simultaneously compared to ACh alone, suggesting that histamine increases ACh‐induced serotonin secretion from enterochromaffin cells. In conclusion, our data suggest that histamine enhances the M3R‐mediated intracellular calcium response to ACh via activation of H1R. This probably increases serotonin secretion from enterochromaffin cells and thereby affects intestinal motility in histamine intolerance, food allergies and irritable bowel syndrome.
Collapse
Affiliation(s)
- Beatrix Pfanzagl
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria
| | - Roswitha Pfragner
- Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Erika Jensen-Jarolim
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria.,The Interuniversity Messerli Research Institute of the Univ. of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Austria
| |
Collapse
|
3
|
Wilzopolski J, Kietzmann M, Mishra SK, Stark H, Bäumer W, Rossbach K. TRPV1 and TRPA1 Channels Are Both Involved Downstream of Histamine-Induced Itch. Biomolecules 2021; 11:biom11081166. [PMID: 34439832 PMCID: PMC8391774 DOI: 10.3390/biom11081166] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/31/2021] [Accepted: 08/04/2021] [Indexed: 01/17/2023] Open
Abstract
Two histamine receptor subtypes (HR), namely H1R and H4R, are involved in the transmission of histamine-induced itch as key components. Although exact downstream signaling mechanisms are still elusive, transient receptor potential (TRP) ion channels play important roles in the sensation of histaminergic and non-histaminergic itch. The aim of this study was to investigate the involvement of TRPV1 and TRPA1 channels in the transmission of histaminergic itch. The potential of TRPV1 and TRPA1 inhibitors to modulate H1R- and H4R-induced signal transmission was tested in a scratching assay in mice in vivo as well as via Ca2+ imaging of murine sensory dorsal root ganglia (DRG) neurons in vitro. TRPV1 inhibition led to a reduction of H1R- and H4R- induced itch, whereas TRPA1 inhibition reduced H4R- but not H1R-induced itch. TRPV1 and TRPA1 inhibition resulted in a reduced Ca2+ influx into sensory neurons in vitro. In conclusion, these results indicate that both channels, TRPV1 and TRPA1, are involved in the transmission of histamine-induced pruritus.
Collapse
Affiliation(s)
- Jenny Wilzopolski
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany; (M.K.); (K.R.)
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA; (S.K.M.); (W.B.)
- Department of Veterinary Medicine, Institute of Pharmacology and Toxicology, Freie Universität Berlin, 14195 Berlin, Germany
- Correspondence: ; Tel.: +49-(03)-083864434
| | - Manfred Kietzmann
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany; (M.K.); (K.R.)
| | - Santosh K. Mishra
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA; (S.K.M.); (W.B.)
| | - Holger Stark
- Institute of Pharmaceutical and Medical Chemistry, Heinrich Heine University Düsseldorf, 40225 Duesseldorf, Germany;
| | - Wolfgang Bäumer
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA; (S.K.M.); (W.B.)
- Department of Veterinary Medicine, Institute of Pharmacology and Toxicology, Freie Universität Berlin, 14195 Berlin, Germany
| | - Kristine Rossbach
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany; (M.K.); (K.R.)
| |
Collapse
|
4
|
Pfanzagl B, Zevallos VF, Schuppan D, Pfragner R, Jensen-Jarolim E. Histamine causes influx via T-type voltage-gated calcium channels in an enterochromaffin tumor cell line: potential therapeutic target in adverse food reactions. Am J Physiol Gastrointest Liver Physiol 2019; 316:G291-G303. [PMID: 30540489 DOI: 10.1152/ajpgi.00261.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The P-STS human ileal neuroendocrine tumor cells, as a model for gut enterochromaffin cells, are strongly and synergistically activated by histamine plus acetylcholine (ACh), presumably via histamine 4 receptors, and weakly activated by histamine alone. Sensing these signals, enterochromaffin cells could participate in intestinal intolerance or allergic reactions to food constituents associated with elevated histamine levels. In this study we aimed to analyze the underlying molecular mechanisms. Inhibition by mepyramine and mibefradil indicated that histamine alone caused a rise in intracellular calcium concentration ([Ca2+]i) via histamine 1 receptors involving T-type voltage-gated calcium channels (VGCCs). Sensitivity to histamine was enhanced by pretreatment with the inflammatory cytokine tumor necrosis factor-α (TNF-α). In accordance with the relief it offers some inflammatory bowel disease patients, otilonium bromide, a gut-impermeable inhibitor of T-type (and L-type) VGCCs and muscarinic ACh receptors, efficiently inhibited the [Ca2+]i responses induced by histamine plus ACh or by histamine alone in P-STS cells. It will take clinical studies to show whether otilonium bromide has promise for the treatment of adverse food reactions. The cells did not react to the nutrient constituents glutamate, capsaicin, cinnamaldehyde, or amylase-trypsin inhibitors and the transient receptor potential channel vanilloid 4 agonist GSK-1016790A. The bacterial product butyrate evoked a rise in [Ca2+]i only when added together with ACh. Lipopolysaccharide had no effect on [Ca2+]i despite the presence of Toll-like receptor 4 protein. Our results indicate that inflammatory conditions with elevated levels of TNF-α might enhance histamine-induced serotonin release from intestinal neuroendocrine cells. NEW & NOTEWORTHY We show that histamine synergistically enhances the intracellular calcium response to the physiological agonist acetylcholine in human ileal enterochromaffin tumor cells. This synergistic activation and cell activation by histamine alone largely depend on T-type voltage-gated calcium channels and are inhibited by the antispasmodic otilonium bromide. The cells showed no response to wheat amylase-trypsin inhibitors, suggesting that enterochromaffin cells are not directly involved in nongluten wheat sensitivity.
Collapse
Affiliation(s)
- Beatrix Pfanzagl
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna , Vienna , Austria
| | - Victor F Zevallos
- Division of Molecular and Translational Medicine, Department of Medicine I, Johannes Gutenberg University , Mainz , Germany
| | - Detlef Schuppan
- Division of Molecular and Translational Medicine, Department of Medicine I, Johannes Gutenberg University , Mainz , Germany
| | - Roswitha Pfragner
- Otto Loewi Research Center for Vascular Biology, Immunology, and Inflammation, Medical University of Graz , Graz , Austria
| | - Erika Jensen-Jarolim
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna , Vienna , Austria.,The Interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University of Vienna, University Vienna , Vienna , Austria
| |
Collapse
|
5
|
Schaper-Gerhardt K, Rossbach K, Nikolouli E, Werfel T, Gutzmer R, Mommert S. The role of the histamine H 4 receptor in atopic dermatitis and psoriasis. Br J Pharmacol 2019; 177:490-502. [PMID: 30460986 DOI: 10.1111/bph.14550] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/22/2018] [Accepted: 10/28/2018] [Indexed: 12/13/2022] Open
Abstract
Atopic dermatitis (AD) and psoriasis are common skin diseases with a high negative impact on patients' quality of life. Both diseases are mediated by a pro-inflammatory infiltrate consisting of several cell types, such as T-cells, antigen-presenting cells and granulocytes and display disturbed keratinocyte differentiation. Given the fact that histamine levels are also highly elevated in inflamed skin, it is likely that histamine plays a relevant role in disease pathology. However, antagonists blocking histamine H1 receptor or H2 receptors are largely ineffective in reducing chronic symptoms in AD and psoriasis. Over the last years, much research has been undertaken to shed light into the mode of action of the most recently discovered histamine H4 receptor. This research has shown that H4 receptor antagonists display antipruritic and anti-inflammatory effects not only in mouse models but also in first human clinical trials, and therefore, H4 receptors might present a novel therapeutic target. In this review, we summarize the effects of the H4 receptors on different cell types, mouse models and clinical studies in regard to AD and psoriasis respectively. LINKED ARTICLES: This article is part of a themed section on New Uses for 21st Century. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.3/issuetoc.
Collapse
Affiliation(s)
- Katrin Schaper-Gerhardt
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Kristine Rossbach
- Department of Pharmacology, Toxicology and Pharmacy, Veterinary School Hannover, Hannover, Germany
| | - Eirini Nikolouli
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Thomas Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Ralf Gutzmer
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Susanne Mommert
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| |
Collapse
|
6
|
Tauber PA, Pickl WF. Pharmacological targeting of allergen-specific T lymphocytes. Immunol Lett 2017; 189:27-39. [PMID: 28322861 DOI: 10.1016/j.imlet.2017.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 03/15/2017] [Indexed: 12/18/2022]
Abstract
Allergic disorders are the result of a complex pathophysiology, involving major cellular lineages and a multitude of humoral factors of the innate and adaptive immune system, and have the tendency to involve multiple organs. Consequently, even standard pharmacological treatment of allergies is rarely specific but usually targets more than one pathway/cellular system at a time. Accordingly, many of the classic anti-allergic drugs have a critical impact also on T helper cells, which are pivotal not only during the sensitization but also the maintenance phase of allergic diseases. Recent years have seen a dramatic increase of novel drugs with the potency to interfere, more or less specifically, with T lymphocyte function, which might, possibly together with classic anti-allergic drugs, help harnessing one of the central cellular players in allergic responses. A major theme in the years to come will be a thoughtful combination of previously established with recently developed treatment modalities.
Collapse
Affiliation(s)
- Peter A Tauber
- Institute of Immunology, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna, Vienna, Austria
| | - Winfried F Pickl
- Institute of Immunology, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
7
|
Involvement of the histamine H4 receptor in clozapine-induced hematopoietic toxicity: Vulnerability under granulocytic differentiation of HL-60 cells. Toxicol Appl Pharmacol 2016; 306:8-16. [DOI: 10.1016/j.taap.2016.06.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/14/2016] [Accepted: 06/26/2016] [Indexed: 12/16/2022]
|
8
|
Albrecht M, Dittrich AM. Expression and function of histamine and its receptors in atopic dermatitis. Mol Cell Pediatr 2015; 2:16. [PMID: 26690068 PMCID: PMC4686460 DOI: 10.1186/s40348-015-0027-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 12/10/2015] [Indexed: 01/08/2023] Open
Abstract
Background Atopic dermatitis constitutes a most burdensome chronic inflammatory skin disease. Standard treatment is cumbersome and often targets its main symptom, pruritus, only insufficiently. Findings Recent advances in our understanding of the role of histamine and its four receptors suggest new approaches which target the histamine receptors alone or as combination therapies to more efficiently combat pruritus and inflammation in atopic dermatitis. Conclusions With this review, we provide an overview on histamine and the expression of its four receptors on skin resident and nonresident cells. Furthermore, we summarize recent studies which suggest anti-histamine therapy to efficiently combat pruritus and inflammation in atopic dermatitis and discuss possible approaches to incorporate these findings into more effective treatment strategies for atopic dermatitis in childhood.
Collapse
Affiliation(s)
- M Albrecht
- Department for Pediatric Pneumology, Allergology and Neonatology, Hannover School of Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - A M Dittrich
- Department for Pediatric Pneumology, Allergology and Neonatology, Hannover School of Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| |
Collapse
|
9
|
Massari NA, Medina VA, Cricco GP, Martinel Lamas DJ, Sambuco L, Pagotto R, Ventura C, Ciraolo PJ, Pignataro O, Bergoc RM, Rivera ES. Antitumor activity of histamine and clozapine in a mouse experimental model of human melanoma. J Dermatol Sci 2013; 72:252-62. [PMID: 23999004 DOI: 10.1016/j.jdermsci.2013.07.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 07/16/2013] [Accepted: 07/22/2013] [Indexed: 12/09/2022]
Abstract
BACKGROUND Functional presence of histamine H4 receptor (H4R) was demonstrated in human melanoma cell lines and biopsies. OBJECTIVE The purposes of this work were to investigate signal transduction pathways and biological responses triggered by the activation of H4R in human primary (WM35) and metastatic (M1/15) melanoma cell lines and to evaluate the in vivo antitumor activity of histamine (HA) and clozapine (CLZ) on human M1/15 melanoma xenografts. METHODS Clonogenic assay, incorporation of BrdU, cell cycle distribution, phosphorylation levels of ERK1/2 and cAMP production were evaluated in vitro. An experimental human melanoma model was developed into athymic nude mice. Tumor growth, survival and histochemical studies were performed in order to investigate the expression levels of H4R, HA, PCNA, mitotic index (MI), and angiogenesis. RESULTS The results indicate that H4R agonists inhibited forskolin-induced cAMP levels only in M1/15 cells while increased phosphorylation levels of ERK1/2 and decreased proliferation in both cell types. In vivo studies show that HA and CLZ (1mgkg(-1), sc) significantly increased median survival and decreased tumor volume. These effects were associated to a reduction in MI, in the expression of proliferation marker and in intratumoral neovascularization. CONCLUSIONS We conclude that HA and CLZ exhibit an antitumoral effect in vitro and in vivo on human melanoma, suggesting the therapeutic potential of these compounds for the treatment of malignant melanoma.
Collapse
Affiliation(s)
- Noelia A Massari
- Laboratory of Radioisotopes, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires 1113, Argentina
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Kuribayashi T, Seita T, Takada K, Honjo T, Yamamoto S. Changes in quantity of Cry j1, a major cedar pollinosis allergen, inCryptomeria japonicapollen during spring in Japan. FOOD AGR IMMUNOL 2013. [DOI: 10.1080/09540105.2013.781138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
11
|
Marzaioli V, McMorrow JP, Angerer H, Gilmore A, Crean D, Zocco D, Rooney P, Veale D, Fearon U, Gogarty M, McEvoy AN, Stradner MH, Murphy EP. Histamine contributes to increased RANKL to osteoprotegerin ratio through altered nuclear receptor 4A activity in human chondrocytes. ACTA ACUST UNITED AC 2013; 64:3290-301. [PMID: 22674155 DOI: 10.1002/art.34554] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To elucidate histamine receptor-mediated signaling pathways, transcriptional events, and target gene expression in human cartilage. METHODS Histamine modulation of cartilage destruction was assessed by Safranin O staining and proteoglycan release. H(1) , H(2) , H(3) , and H(4) histamine receptor-dependent regulation of transcription factors (nuclear receptor 4A1 [NR4A1], NR4A2, and NR4A3), RANKL, and osteoprotegerin (OPG) messenger RNA (mRNA) levels were measured in primary and SW-1353 chondrocyte cells using quantitative polymerase chain reaction and selective histamine receptor antagonists. Soluble RANKL and OPG protein levels were determined using enzyme-linked immunosorbent assays. NR4A protein levels and transactivity were evaluated by Western blot analysis, immunocytochemistry, and luciferase reporter assays. Stable depletion of NR4A1-3 was achieved by lentiviral transduction of NR4A short hairpin RNA. RESULTS Primary human chondrocyte cells expressed differential steady-state levels of H(1) -H(4) histamine receptor mRNA. In combination with tumor necrosis factor α, histamine significantly promoted cartilage proteoglycan depletion and release. Histamine modulated the expression of NR4A1-3 orphan receptors in primary and immortalized human chondrocyte cells in a time- and concentration-dependent manner. Histamine selectively signaled through H(1) and H(2) histamine receptors in chondrocytes to modulate RANKL and NR4A2 expression. The temporal effects of histamine on NR4A2 gene transcription were reduced in cells pretreated with inhibitors directed against protein kinase A, MAPK, and NF-κB signaling pathways. Histamine modulated the expression of RANKL with modest effects on OPG levels, leading to increased RANKL:OPG mRNA and protein ratios. Stable knockdown of NR4A1-3 expression resulted in reduced endogenous OPG levels and the loss of histamine-dependent regulation of RANKL expression. CONCLUSION Our findings indicate that histamine, via H(1) and H(2) histamine receptors, contributes to joint disease by enhancing the ratio of RANKL to OPG expression through altered NR4A activity in human chondrocyte cells.
Collapse
Affiliation(s)
- Viviana Marzaioli
- Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Seifert R, Strasser A, Schneider EH, Neumann D, Dove S, Buschauer A. Molecular and cellular analysis of human histamine receptor subtypes. Trends Pharmacol Sci 2013; 34:33-58. [PMID: 23254267 PMCID: PMC3869951 DOI: 10.1016/j.tips.2012.11.001] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 11/03/2012] [Accepted: 11/05/2012] [Indexed: 01/08/2023]
Abstract
The human histamine receptors hH(1)R and hH(2)R constitute important drug targets, and hH(3)R and hH(4)R have substantial potential in this area. Considering the species-specificity of pharmacology of H(x)R orthologs, it is important to analyze hH(x)Rs. Here, we summarize current knowledge of hH(x)Rs endogenously expressed in human cells and hH(x)Rs recombinantly expressed in mammalian and insect cells. We present the advantages and disadvantages of the various systems. We also discuss problems associated with the use of hH(x)R antibodies, an issue of general relevance for G-protein-coupled receptors (GPCRs). There is much greater overlap in activity of 'selective' ligands for other hH(x)Rs than the cognate receptor subtype than generally appreciated. Studies with native and recombinant systems support the concept of ligand-specific receptor conformations, encompassing agonists and antagonists. It is emerging that for characterization of hH(x)R ligands, one cannot rely on a single test system and a single parameter. Rather, multiple systems and parameters have to be studied. Although such studies are time-consuming and expensive, ultimately, they will increase drug safety and efficacy.
Collapse
Affiliation(s)
- Roland Seifert
- Institute of Pharmacology, Medical School of Hannover, Hannover, Germany.
| | | | | | | | | | | |
Collapse
|
13
|
Immunomodulatory effects of clozapine and their clinical implications: what have we learned so far? Schizophr Res 2012; 140:204-13. [PMID: 22831769 DOI: 10.1016/j.schres.2012.06.020] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 06/02/2012] [Accepted: 06/19/2012] [Indexed: 01/24/2023]
Abstract
Clozapine remains the drug of choice for treatment resistant schizophrenia, but is associated with potentially life threatening side effects, including agranulocytosis and myocarditis. Immunological mechanisms may be involved in the development of these side effects or in the unique antipsychotic efficacy in subgroups of schizophrenia patients. This systematic review presents the immunomodulatory effects of clozapine from human in vitro and in vivo studies and relates these findings to the developments of adverse and therapeutic effects of clozapine. Several studies confirm the immunomodulatory actions of clozapine, but only few studies investigated their relationship to the unique adverse and therapeutic effects of clozapine. During the first month of clozapine treatment, up to 50% of patients develop fever and flu like symptoms, which is seemingly driven by increased cytokines. Within the same time period, the risk of side-effects with a suspected immunological mechanism peaks. Patients developing fever during the first weeks of treatment should have a thorough physical examination, and measurements of white blood cell count, absolute neutrophil count, ECG, C-reactive protein, creatinine kinase, and troponin to exclude infection, agranulocytosis, myocarditis and neuroleptic malignant syndrome. To what degree the unique antipsychotic efficacy of clozapine in subgroups of schizophrenia patients is related to its immunomodulatory effects has not been studied. Research relating the immunomodulatory actions of clozapine and its early markers to clinically relevant adverse and therapeutic outcomes is hoped to provide new leads for the understanding of the pathophysiology of schizophrenia and aid the development of novel treatment targets.
Collapse
|
14
|
Novak N, Mete N, Bussmann C, Maintz L, Bieber T, Akdis M, Zumkehr J, Jutel M, Akdis C. Early suppression of basophil activation during allergen-specific immunotherapy by histamine receptor 2. J Allergy Clin Immunol 2012; 130:1153-1158.e2. [PMID: 22698521 DOI: 10.1016/j.jaci.2012.04.039] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 03/23/2012] [Accepted: 04/26/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Early desensitization of FcεRI-bearing mast cells and basophils has been demonstrated in allergen-specific immunotherapy and drug desensitization. However, its mechanisms have not been elucidated in detail. Histamine is one of the main mediators released on FcεRI triggering of basophils and mast cells, and it exerts its functions through histamine receptors (HRs). OBJECTIVES We sought to investigate HR expression on basophils of patients undergoing venom immunotherapy (VIT) and its effect on allergen, IgE, and FcεRI cross-linking-mediated basophil function and mediator release. METHODS Basophils were purified from the peripheral blood of patients undergoing VIT and control subjects and were studied functionally by using real-time PCR, flow cytometry and ELISA assays. RESULTS Rapid upregulation of H2R within the first 6 hours of the build-up phase of VIT was observed. H2R strongly suppressed FcεRI-induced activation and mediator release of basophils, including histamine and sulfidoleukotrienes, as well as cytokine production in vitro. CONCLUSION Immunosilencing of FcεRI-activated basophils by means of selective suppression mediated by H2R might be highly relevant for the very early induction of allergen tolerance and the so-called desensitization effect of VIT.
Collapse
Affiliation(s)
- Natalija Novak
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany.
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Comparative gene expression study of the chronic exposure to clozapine and haloperidol in rat frontal cortex. Schizophr Res 2012; 134:211-8. [PMID: 22154595 DOI: 10.1016/j.schres.2011.11.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 11/08/2011] [Accepted: 11/09/2011] [Indexed: 12/26/2022]
Abstract
Antipsychotic drugs (APDs) are effective in treating some of the positive and negative symptoms of schizophrenia. APDs take time to achieve a therapeutic effect which suggests that changes in gene expression are involved in their efficacy. We hypothesized that there would be altered expression of specific genes associated with the etiology or treatment of schizophrenia in frontal cortex of rats that received chronic treatment with a typical APD (haloperidol) vs. an atypical APD (clozapine). Rats were administered clozapine, haloperidol, or sterile saline intraperitoneally daily for 21days. Frontal cortices from clozapine-, haloperidol-, and saline-treated rats were dissected and subjected to microarray analysis. We observed a significant (1.5 fold, p<0.05) downregulation of 278 genes and upregulation of 73 genes in the clozapine-treated brains vs. controls and downregulation of 451 genes and upregulation of 115 genes in the haloperidol-treated brains vs. control. A total of 146 genes (130 downregulated and 16 upregulated) were significantly altered by both clozapine and haloperidol. These genes were classified by functional groups. qRT-PCR (quantitative real-time polymerase chain reaction) analysis verified the direction and magnitude of change for a group of nine genes significantly altered by clozapine and 11 genes significantly altered by haloperidol. Three genes verified by qRT-PCR were altered by both drugs: Bcl2-like 1 (Bcl2l1), catechol-O-methyltransferase (Comt), and opioid-binding protein/cell adhesion molecule-like (Opcml). Our results show that clozapine and haloperidol cause changes in levels of many important genes that may be involved in etiology and treatment of schizophrenia.
Collapse
|
16
|
Fang Z, Yao W, Xiong Y, Li J, Liu L, Shi L, Zhang W, Zhang C, Nie L, Wan J. Attenuated expression of HRH4 in colorectal carcinomas: a potential influence on tumor growth and progression. BMC Cancer 2011; 11:195:1-11. [PMID: 21609450 PMCID: PMC3128004 DOI: 10.1186/1471-2407-11-195] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Accepted: 05/24/2011] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Earlier studies have reported the production of histamine in colorectal cancers (CRCs). The effect of histamine is largely determined locally by the histamine receptor expression pattern. Recent evidence suggests that the expression level of histamine receptor H4 (HRH4) is abnormal in colorectal cancer tissues. However, the role of HRH4 in CRC progression and its clinical relevance is not well understood. The aim of this study is to evaluate the clinical and molecular phenotypes of colorectal tumors with abnormal HRH4 expression. METHODS Immunoblotting, real-time PCR, immunofluorescence and immunohistochemistry assays were adopted to examine HRH4 expression in case-matched CRC samples (n = 107) and adjacent normal tissues (ANTs). To assess the functions of HRH4 in CRC cells, we established stable HRH4-transfected colorectal cells and examined cell proliferation, colony formation, cell cycle and apoptosis in these cells. RESULTS The protein levels of HRH4 were reduced in most of the human CRC samples regardless of grade or Dukes classification. mRNA levels of HRH4 were also reduced in both early-stage and advanced CRC samples. In vitro studies showed that HRH4 over-expression caused growth arrest and induced expression of cell cycle proteins in CRC cells upon exposure to histamine through a cAMP -dependent pathway. Furthermore, HRH4 stimulation promoted the 5-Fu-induced cell apoptosis in HRH4-positive colorectal cells. CONCLUSION The results from the current study supported previous findings of HRH4 abnormalities in CRCs. Expression levels of HRH4 could influence the histamine-mediated growth regulation in CRC cells. These findings suggested a potential role of abnormal HRH4 expression in the progression of CRCs and provided some new clues for the application of HRH4-specific agonist or antagonist in the molecular therapy of CRCs.
Collapse
Affiliation(s)
- Zhengyu Fang
- Biomedical Research Institute, Shenzhen-PKU-HKUST Medical Center, Guangdong Province, Shenzhen, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
The pathology of atopic dermatitis is orchestrated on the cellular level by several different cell types in the characteristic skin lesions. In such lesions, histamine as a mediator of many biological functions is also present in high concentrations. Most of the cells involved in the inflammatory responses express the histamine H1 and H2 receptors, but drugs targeting these receptors are not clinically effective. The discovery of the fourth histamine receptor, which is differentially expressed on immune and nonimmune cells, has shed new light on the actions of histamine in the complexity of atopic dermatitis. In this review, we describe a possible genetic impact on the expression level of the histamine H4 receptor and summarize the current data regarding the activity of the histamine H4 receptor on the key effector cells in atopic dermatitis. We do so in the context of whether the histamine H4 receptor offers a novel target for effective treatments of inflammatory skin diseases.
Collapse
|
18
|
Schneider E, Leite-de-Moraes M, Dy M. Histamine, Immune Cells and Autoimmunity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 709:81-94. [DOI: 10.1007/978-1-4419-8056-4_9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
19
|
Krug PJ, Riffell JA, Zimmer RK. Endogenous signaling pathways and chemical communication between sperm and egg. ACTA ACUST UNITED AC 2009; 212:1092-100. [PMID: 19329742 DOI: 10.1242/jeb.027029] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Red abalone (Haliotis rufescens) sperm detect a waterborne chemical cue released by conspecific eggs, and change their swimming behavior to increase the likelihood of fertilization success. Previously, we isolated the natural sperm attractant by bioassay-guided fractionation and high-performance liquid chromatography, and chemically identified it as the free-amino acid l-tryptophan (l-Trp). In the present study, levels of this ecologically meaningful compound were quantified in various abalone tissues, and in freshly spawned eggs. Tryptophan was the least abundant of 19 dissolved free amino acids (DFAAs) in ovary, testis, foot muscle, gill, stomach and hemolymph. As a proportion of the DFAA pool, however, Trp concentrations were significantly elevated in eggs (three- to seven-times higher) relative to all other sampled tissues. Natural rates of Trp release from eggs also were measured and correlated with fertility. Fertilization success peaked during an initial 30 min period (post-spawn), but decreased to nil over the next 50 min. Closely paralleling these events, Trp accumulated in seawater around freshly spawned eggs for the first 45 min (post-spawn) before decaying rapidly from solution. Older eggs stopped releasing Trp approximately when they became infertile, revealing a critical link between gamete physiology and chemical signaling. This apparent negative feedback loop did not arise from tryptophan oxidation, uptake by bacteria in seawater, or a degrading enzyme released by eggs. As a metabolic precursor critical to development of the larval nervous system, Trp could be an honest indicator of egg fitness for prospective sperm suitors. Our results suggest that endogenous signaling pathways have been co-opted for external communication between gametes, as an adaptation to increase reproductive success by promoting sperm navigation towards fertile eggs.
Collapse
Affiliation(s)
- Patrick J Krug
- Department of Biological Sciences, California State University, Los Angeles, CA 90032, USA
| | | | | |
Collapse
|
20
|
Zampeli E, Tiligada E. The role of histamine H4 receptor in immune and inflammatory disorders. Br J Pharmacol 2009; 157:24-33. [PMID: 19309354 DOI: 10.1111/j.1476-5381.2009.00151.x] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Since its discovery at the beginning of the 20th century, histamine has been established to play a pathophysiological regulatory role in cellular events through binding to four types of G-protein-coupled histamine receptors that are differentially expressed in various cell types. The discovery, at the turn of the millennium, that the histamine H4 receptor is largely expressed in haemopoietic cells as well as its chemotactic properties designate its regulatory role in the immune system. H4 receptors modulate eosinophil migration and selective recruitment of mast cells leading to amplification of histamine-mediated immune responses and eventually to chronic inflammation. H4 receptor involvement in dendritic cell activation and T cell differentiation documents its immunomodulatory function. The characterization of the H4 as the immune system histamine receptor directed growing attention towards its therapeutic exploitation in inflammatory disorders, such as allergy, asthma, chronic pruritus and autoimmune diseases. The efficacy of a number of H4 receptor ligands has been evaluated in in vivo and in vitro animal models of disease and in human biological samples. However, before reaching decisive conclusions on H4 receptor pathophysiological functions and therapeutic exploitation, identification of genetic polymorphisms and interspecies differences in its relative actions and pharmacological profile need to be addressed and taken into consideration. Despite certain variations in the reported findings, the available data strongly point to the H4 receptor as a novel target for the pharmacological modulation of histamine-transferred immune signals and offer an optimistic perspective for the therapeutic exploitation of this promising new drug target in inflammatory disorders.
Collapse
Affiliation(s)
- E Zampeli
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | |
Collapse
|
21
|
Gutzmer R, Mommert S, Gschwandtner M, Zwingmann K, Stark H, Werfel T. The histamine H4 receptor is functionally expressed on TH2 cells. J Allergy Clin Immunol 2009; 123:619-25. [DOI: 10.1016/j.jaci.2008.12.1110] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 12/10/2008] [Accepted: 12/23/2008] [Indexed: 10/21/2022]
|
22
|
Chiba S, Itateyama E, Sakata T, Yoshimatsu H. Acute central administration of immepip, a histamine H3 receptor agonist, suppresses hypothalamic histamine release and elicits feeding behavior in rats. Brain Res Bull 2009; 79:37-40. [PMID: 19150394 DOI: 10.1016/j.brainresbull.2008.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Revised: 12/08/2008] [Accepted: 12/18/2008] [Indexed: 10/21/2022]
Abstract
Histamine suppresses feeding behavior via histamine H1 receptors in the hypothalamus. This study was performed to examine whether the acute reduction of histamine release in the hypothalamus caused by immepip, a histamine H3 agonist, modulates the feeding behavior of rats. Rats had a catheter implanted in the third cerebral ventricle (i3v) and were given central injections of phosphate-buffered-saline or immepip (100-300 pmol/rat). Following the i3v administration of immepip, the rats developed dose-dependent hypokinesia within 10 min of administration. Next to hypokinesia, the rats showed significant dose-dependent feeding behavior. High-performance liquid chromatography (HPLC) confirmed the reduction in histamine release in the hypothalamus of rats following i3v administration of immepip. These results suggest that i3v administration of immepip, an H3 receptor agonist, suppresses hypothalamic histamine release and elicits feeding behavior in rats.
Collapse
Affiliation(s)
- Seiichi Chiba
- Department of Internal Medicine I, School of Medicine, Oita University, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan.
| | | | | | | |
Collapse
|
23
|
Dynamic Scaling in Chemical Ecology. J Chem Ecol 2008; 34:822-36. [DOI: 10.1007/s10886-008-9486-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Revised: 04/24/2008] [Accepted: 04/28/2008] [Indexed: 11/26/2022]
|
24
|
Thurmond RL, Gelfand EW, Dunford PJ. The role of histamine H1 and H4 receptors in allergic inflammation: the search for new antihistamines. Nat Rev Drug Discov 2008; 7:41-53. [PMID: 18172439 DOI: 10.1038/nrd2465] [Citation(s) in RCA: 416] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Histamine has a key role in allergic inflammatory conditions. The inflammatory responses resulting from the liberation of histamine have long been thought to be mediated by the histamine H1 receptor, and H1-receptor antagonists--commonly known as antihistamines--have been used to treat allergies for many years. However, the importance of histamine in the pathology of conditions such as asthma and chronic pruritus may have been underestimated. Here, we review accumulating evidence suggesting that histamine indeed has roles in inflammation and immune function modulation in such diseases. In particular, the discovery of a fourth histamine receptor (H4) and its expression on numerous immune and inflammatory cells has prompted a re-evaluation of the actions of histamine, suggesting a new potential for H4-receptor antagonists and a possible synergy between H1 and H4-receptor antagonists in targeting various inflammatory conditions.
Collapse
Affiliation(s)
- Robin L Thurmond
- Johnson & Johnson Pharmaceutical Research & Development, L.L.C. San Diego, California 92121, USA.
| | | | | |
Collapse
|
25
|
Cevikbas F, Steinhoff A, Homey B, Steinhoff M. Neuroimmune interactions in allergic skin diseases. Curr Opin Allergy Clin Immunol 2007; 7:365-73. [PMID: 17873574 DOI: 10.1097/aci.0b013e3282a644d2] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Recent studies have advanced our understanding that allergic inflammation triggers neuronal dysfunction, thereby modulating inflammation-related changes in affected tissues including the skin. Vice versa, evidence has emerged that inflammatory responses are controlled by neurons. Moreover, structural cells and invading immune cells express neuronal receptors and release mediators which directly communicate with nerve endings in the skin. RECENT FINDINGS During the allergic response, skin cells do not only represent a significant source of neuromediators but also represent targets for neuropeptides or neurotrophins as well as neurotransmitters in the inflamed tissue. During the last decade, it has become obvious that a large variety of molecules influence the adaptive as well as the innate immune response. Beside neuropeptide receptors, proteinase-activated receptors, novel histamine receptors, different cytokine or chemokine receptors play a role in the pathophysiology of atopic and allergic diseases. SUMMARY Peripheral sensory and autonomic nerves are critically involved in many pathways of the innate and adoptive immune system during allergic and atopic skin diseases. Further dissection of receptor-mediated and intracellular signal pathways will help to develop more effective therapeutic approaches for allergic and inflammatory skin diseases.
Collapse
Affiliation(s)
- Ferda Cevikbas
- Department of Dermatology, IZKF Moenster and Boltzmann-Institute for Cell and Immunobiology of the Skin, University of Münster, Germany
| | | | | | | |
Collapse
|