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Iwasaki N, Terawaki S, Shimizu K, Oikawa D, Sakamoto H, Sunami K, Tokunaga F. Th2 cells and macrophages cooperatively induce allergic inflammation through histamine signaling. PLoS One 2021; 16:e0248158. [PMID: 33662037 PMCID: PMC7932145 DOI: 10.1371/journal.pone.0248158] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 02/20/2021] [Indexed: 01/27/2023] Open
Abstract
Histamine, which is mainly produced by mast cells and basophils, participates in various allergic symptoms, and some studies have reported that macrophages also produce histamine. Moreover, recent studies have revealed that macrophages, especially alternatively activated macrophages (M2) induced by T helper 2 (Th2) cytokines, such as interleukin (IL)-4 and IL-13, participate in the pathogenesis of allergic diseases. The major source of Th2 cytokines is antigen-specific Th2 cells. To elucidate the relationship between histamine, macrophages, and Th2 cells in allergic inflammation, we established a macrophage-Th2 cell co-culture model in vitro and an antigen-specific Th2 cell transfer mouse model of rhinitis. In vitro analyses indicated that macrophages produce histamine by interacting with antigen-specific Th2 cells through the antigen. Furthermore, Th2 cells and macrophages cooperatively elicited rhinitis in the mouse model. We determined that histamine induces Th2- and macrophage-elicited sneezing responses through H1 receptor signaling, whereas it induces nasal eosinophil infiltrations through H4 receptor signaling. Collectively, these results indicate a novel histamine production mechanism by macrophages, in which Th2 cells and macrophages cooperatively induce nasal allergic inflammation through histamine signaling.
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Affiliation(s)
- Naruhito Iwasaki
- Department of Pathobiochemistry, Graduate School of Medicine, Osaka City University, Osaka, Japan
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka City University, Osaka, Japan
- * E-mail:
| | - Seigo Terawaki
- Department of Pathobiochemistry, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Kouhei Shimizu
- Department of Pathobiochemistry, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Daisuke Oikawa
- Department of Pathobiochemistry, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Hirokazu Sakamoto
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Kishiko Sunami
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Fuminori Tokunaga
- Department of Pathobiochemistry, Graduate School of Medicine, Osaka City University, Osaka, Japan
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Yamada S, Tanimoto A, Sasaguri Y. Critical in vivo roles of histamine and histamine receptor signaling in animal models of metabolic syndrome. Pathol Int 2016; 66:661-671. [PMID: 27860077 DOI: 10.1111/pin.12477] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/19/2016] [Accepted: 10/25/2016] [Indexed: 11/30/2022]
Abstract
Histamine, a classic low-molecular-weight amine, is synthesized from L-histidine by histidine decarboxylase (HDC), and histamine-specific receptors (HRs) are essential for its actions. Our serial in vivo studies have uniquely reported that expression of histamine/HRs is variably identified in atherosclerotic lesions, and that HDC-gene knockout mice without histamine/HRs signaling show a marked reduction of atherosclerotic progression. These data have convinced us that histamine plays a pivotal role in the pathogenesis of atherosclerosis. Among four subclasses of HRs, the expression profile of the main receptors (H1/2R) has been shown to be switched from H2R to H1R during monocyte to macrophage differentiation, and H1R is also predominant in smooth muscle and endothelial cells of atheromatous plaque. Using various animal models of H1/2R-gene knockout mice, H1R and H2R were found to reciprocally but critically regulate not only hypercholesterolemia-induced atherosclerosis and injury-induced arteriosclerosis, but also hyperlipidemia-induced nonalcoholic fatty liver disease (NAFLD). Metabolic syndrome manifests obesity, dyslipidemia, insulin resistance, atherosclerosis, and/or NAFLD, i.e. the dysregulation of lipid/bile acid/glucose metabolism. Therefore, although its etiology is complicated and multifactorial, histamine/HRs signaling has a close relationship with the development of metabolic syndrome. We herein review diverse, key in vivo roles of histamine/HR signaling in the pathogenesis of metabolic syndrome.
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Affiliation(s)
- Sohsuke Yamada
- Department of Pathology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Akihide Tanimoto
- Department of Pathology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Yamada S, Guo X, Wang K, Tanimoto A, Sasaguri Y. Novel function of histamine signaling via histamine receptors in cholesterol and bile acid metabolism: Histamine H2 receptor protects against nonalcoholic fatty liver disease. Pathol Int 2016; 66:376-85. [PMID: 27321390 DOI: 10.1111/pin.12423] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/11/2016] [Accepted: 05/18/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Sohsuke Yamada
- Department of Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
- Department of Pathology and Cell Biology School of Medicine, University of Occupational and Environmental Health Kitakyushu Japan
| | - Xin Guo
- Department of Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
- Department of Pathology and Cell Biology School of Medicine, University of Occupational and Environmental Health Kitakyushu Japan
- Laboratory of Pathology, Hebei Cancer Institute, the Fourth Hospital of Hebei Medical University Shijiazhuang China
| | - Ke‐Yong Wang
- Department of Pathology and Cell Biology School of Medicine, University of Occupational and Environmental Health Kitakyushu Japan
- Shared‐Use Research Center School of Medicine, University of Occupational and Environmental Health Kitakyushu Japan
| | - Akihide Tanimoto
- Department of Pathology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
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Yamada S, Wang KY, Tanimoto A, Sasaguri Y. Novel function of histamine signaling in hyperlipidemia-induced atherosclerosis: Histamine H1 receptors protect and H2 receptors accelerate atherosclerosis. Pathol Int 2015; 65:67-80. [DOI: 10.1111/pin.12246] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/28/2014] [Indexed: 01/25/2023]
Affiliation(s)
- Sohsuke Yamada
- Department of Pathology and Cell Biology; School of Medicine; University of Occupational and Environmental Health; Kitakyushu
| | - Ke-Yong Wang
- Department of Pathology and Cell Biology; School of Medicine; University of Occupational and Environmental Health; Kitakyushu
- Shared-Use Research Center; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
| | - Akihide Tanimoto
- Department of Pathology and Cell Biology; School of Medicine; University of Occupational and Environmental Health; Kitakyushu
- Department of Tumor Pathology; Field of Oncology; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - Yasuyuki Sasaguri
- Department of Pathology and Cell Biology; School of Medicine; University of Occupational and Environmental Health; Kitakyushu
- Laboratory of Pathology; Fukuoka Wajiro Hospital; Fukuoka Japan
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Kimura S, Wang KY, Yamada S, Guo X, Nabeshima A, Noguchi H, Watanabe T, Harada M, Sasaguri Y. CCL22/Macrophage-derived Chemokine Expression in Apolipoprotein E-deficient Mice and Effects of Histamine in the Setting of Atherosclerosis. J Atheroscler Thromb 2014; 22:599-609. [PMID: 25492567 DOI: 10.5551/jat.27417] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023] Open
Abstract
AIM Macrophage-derived chemokine (CCL22) is a member of the CC-family of chemokines synthesized by monocyte-derived macrophages. Previous studies have reported a relationship between CCL22 and atherosclerosis and the role of histamine in this pathway. Histamine ncreases the CCL22 expression in human monocytes via the H2 receptor. In this study, we investigated the effects of CCL22 and the role of histamine in mouse monocytes with respect to atherosclerosis. METHODS AND RESULTS The expression of CCL22 was investigated in apolipoprotein E (apoE)-deficient mice. The mice had high serum concentrations of CCL22 and their atherosclerotic lesions contained abundant levels of CCL22. In addition, when the mouse monocyte cell line (J774A.1 cells) differentiated into macrophage-like cells, the cells showed a similar expression of CCL22 and reduced expression of H2 receptors. Histamine is synthesized from l-histidine by histidine decarboxylase (HDC) in a single enzymatic step. HDC knockout mice were compared with apoE/HDC double knockout mice. The findings indicated that the expression of CCL22 in atherosclerosis models is under the influence of histamine. In addition, in vitro studies using J774A.1 cells and an in vivo study using histamine receptor knockout mice showed that histamine stimulates the CCL22 expression via the histamine H2 receptor. CONCLUSIONS The current results support our previous CCL22 studies in the setting of human atherosclerosis and suggest that this molecule is involved in the atherogenic processes in a mouse model of atherosclerosis.
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Affiliation(s)
- Satoshi Kimura
- Department of Laboratory and Transfusion Medicine, University of Occupational and Environmental Health
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Yamada S, Wang KY, Tanimoto A, Guo X, Nabeshima A, Watanabe T, Sasaguri Y. Histamine receptors expressed in circulating progenitor cells have reciprocal actions in ligation-induced arteriosclerosis. Pathol Int 2014; 63:435-47. [PMID: 24200155 DOI: 10.1111/pin.12091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 08/09/2013] [Indexed: 12/01/2022]
Abstract
Histamine is synthesized as a low-molecular-weight amine from L-histidine by histidine decarboxylase (HDC). Recently, we demonstrated that carotid artery-ligated HDC gene-deficient mice (HDC(-/-)) showed less neointimal formation than wild-type (WT) mice, indicating that histamine participates in the process of arteriosclerosis. However, little is known about the roles of histamine-specific receptors (HHRs) in arteriosclerosis. To define the roles of HHRs in arteriosclerosis, we investigated intimal remodeling in ligated carotid arteries of HHR-deficient mice (H1R(-/-) or H2R(-/-)). Quantitative analysis showed that H1R(-/-) mice had significantly less arteriosclerogenesis, whereas H2R(-/-) mice had more, as compared with WT mice. Bone marrow transplantation from H1R(-/-) or H2R(-/-) to WT mice confirmed the above observation. Furthermore, the increased expression of monocyte chemoattractant protein (MCP-1), platelet-derived growth factor (PDGF), adhesion molecules and liver X receptor (LXR)-related inflammatory signaling factors, including Toll-like receptor (TLR3), interleukin-1 receptor (IL-1R) and tumor necrosis factor receptor (TNF-R), was consistent with the arteriosclerotic phenotype of H2R(-/-) mice. Peripheral progenitor cells in H2R(-/-) mice accelerate ligation-induced arteriosclerosis through their regulation of MCP-1, PDGF, adhesion molecules and LXR-related inflammatory signaling factors. In contrast, peripheral progenitor cells act to suppress arteriosclerosis in H1R(-/-) mice, indicating that HHRs reciprocally regulate inflammation in the ligation-induced arteriosclerosis.
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Affiliation(s)
- Sohsuke Yamada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu
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Novak N, Peng WM, Bieber T, Akdis C. FcεRI stimulation promotes the differentiation of histamine receptor 1-expressing inflammatory macrophages. Allergy 2013; 68:454-61. [PMID: 23414213 DOI: 10.1111/all.12109] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2012] [Indexed: 02/01/2023]
Abstract
BACKGROUND Monocyte differentiation into dendritic cells or macrophages and recruitment to peripheral organs in chronic inflammatory diseases are directed by allergen challenge via FcεRI as well as the nature of soluble factors in the microenvironment. High-affinity receptor for IgE stimulation of effector cells results in the release of histamine, which acts on various histamine receptors (HR) 1-4, expressed by immune cells. METHODS We examined the effect of FcεRI stimulation of human monocytes on H1R expression and function of differentiating cells. The mRNA levels of H1R, H2R and histidine decarboxylase of differentiating cells were detected by quantitative real-time PCR. Expression of CD1c, CD11c, CD68 and CD163 was detected by flow cytometry. Amount of histamine, IL-6 and IL-12p70 in the cell culture was measured with the help of cytometric bead arrays or ELISA assays. Numbers of H1R-expressing macrophages were evaluated by immunofluorescence double staining of CD68 and H1R on human skin sections. RESULTS We demonstrated that FcεRI stimulation promotes the generation of H1R-expressing macrophage-like cells with enhanced histamine biosynthesis and H1R-mediated proinflammatory properties. Supporting our in vitro findings, high numbers of H1R-expressing CD68(pos) macrophages were detected in the dermis of atopic dermatitis (AD) skin lesions. CONCLUSION Our observations point to a close histamine-/HR-mediated activation of dermal macrophages, leading to modified cell differentiation and responsiveness via H1R, which might contribute to the aggravation of allergic skin inflammation in AD.
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Affiliation(s)
- N. Novak
- Department of Dermatology and Allergy; University of Bonn Medical Center; Bonn; Germany
| | - W. M. Peng
- Department of Dermatology and Allergy; University of Bonn Medical Center; Bonn; Germany
| | - T. Bieber
- Department of Dermatology and Allergy; University of Bonn Medical Center; Bonn; Germany
| | - C. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF); University of Zurich; Davos; Switzerland
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Kimura S, Tanimoto A, Wang KY, Shimajiri S, Guo X, Tasaki T, Yamada S, Sasaguri Y. Expression of macrophage-derived chemokine (CCL22) in atherosclerosis and regulation by histamine via the H2 receptor. Pathol Int 2012; 62:675-83. [PMID: 23005594 DOI: 10.1111/j.1440-1827.2012.02854.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhao P, Shao Y, Zhang M, Fan K, Kong X, Wang R, Hou Y. Neuropeptide S promotes wakefulness through activation of the posterior hypothalamic histaminergic and orexinergic neurons. Neuroscience 2012; 207:218-26. [DOI: 10.1016/j.neuroscience.2012.01.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 11/29/2011] [Accepted: 01/09/2012] [Indexed: 10/14/2022]
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Wang KY, Tanimoto A, Guo X, Yamada S, Shimajiri S, Murata Y, Ding Y, Tsutsui M, Kato S, Watanabe T, Ohtsu H, Hirano KI, Kohno K, Sasaguri Y. Histamine deficiency decreases atherosclerosis and inflammatory response in apolipoprotein E knockout mice independently of serum cholesterol level. Arterioscler Thromb Vasc Biol 2011; 31:800-7. [PMID: 21273563 DOI: 10.1161/atvbaha.110.215228] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Histamine and histamine receptors are found in atherosclerotic lesions, and their signaling and subsequent proatherogenic or proinflammatory gene expression are involved in atherogenesis. In the present study, we generated apolipoprotein E (apoE) and histamine synthesizing histidine decarboxylase double knockout (DKO) mice on a C57BL/6J (wild-type mice) background to clarify the roles of histamine in atherosclerosis. METHODS AND RESULTS Wild-type, apoE knockout (KO), and DKO mice were fed a high-cholesterol diet to analyze hyperlipidemia-induced atherosclerosis. Compared with wild-type mice, apoE-KO mice showed increased expression of histamine and its receptors, corresponding to increased atherosclerotic lesion areas and expression of inflammatory regulators, such as nuclear factor-κB, scavenger receptors, inflammatory cytokines, and matrix metalloproteinases. Histamine deficiency after deletion of histidine decarboxylase reduced atherosclerotic areas and expression of a range of the inflammation regulatory genes, but serum cholesterol levels of DKO mice were higher than those of apoE-KO mice. CONCLUSIONS These results indicate that histamine is involved in the development of atherosclerosis in apoE-KO mice by regulating gene expression of inflammatory modulators, an action that appears to be independent of serum cholesterol levels. In addition to acute inflammatory response, histamine participates in chronic inflammation, such as hyperlipidemia-induced atherosclerosis, and might be a novel therapeutic target for the treatment of atherosclerosis.
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Affiliation(s)
- Ke-Yong Wang
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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11
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Tanimoto A, Murata Y, Wang KY, Tsutsui M, Kohno K, Sasaguri Y. Monocyte Chemoattractant Protein-1 Expression Is Enhanced by Granulocyte-Macrophage Colony-stimulating Factor via Jak2-Stat5 Signaling and Inhibited by Atorvastatin in Human Monocytic U937 Cells. J Biol Chem 2008; 283:4643-51. [DOI: 10.1074/jbc.m708853200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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12
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Inhibitory effects of Piper betle on production of allergic mediators by bone marrow-derived mast cells and lung epithelial cells. Int Immunopharmacol 2007; 8:453-7. [PMID: 18279799 DOI: 10.1016/j.intimp.2007.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Revised: 11/08/2007] [Accepted: 11/12/2007] [Indexed: 11/28/2022]
Abstract
The leaves of the Piper betle Linn. (Piperaceae) are used in traditional medicine and possess anti-oxidant, anti-bacterial, anti-fungal, anti-diabetic and radioprotective activities. However, little is known about their anti-allergic activity. Therefore, the effects of P. betle ethanolic extract (PE) on the production of histamine and granulocyte macrophage-colony-stimulating factor (GM-CSF) by murine bone marrow mast cells (BMMCs) and on the secretion of eotaxin and IL-8 by the human lung epithelial cell line, BEAS-2B, were investigated in vitro. PE significantly decreased histamine and GM-CSF produced by an IgE-mediated hypersensitive reaction, and inhibited eotaxin and IL-8 secretion in a TNF-alpha and IL-4-induced allergic reaction. The results suggest that P. betle may offer a new therapeutic approach for the control of allergic diseases through inhibition of production of allergic mediators.
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Tanimoto A, Wang KY, Murata Y, Kimura S, Nomaguchi M, Nakata S, Tsutsui M, Sasaguri Y. Histamine upregulates the expression of inducible nitric oxide synthase in human intimal smooth muscle cells via histamine H1 receptor and NF-kappaB signaling pathway. Arterioscler Thromb Vasc Biol 2007; 27:1556-61. [PMID: 17478759 DOI: 10.1161/atvbaha.106.139089] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Histamine increases endothelial nitric oxide (NO) production as an endothelium-dependent vasodilator, which acts as a vasoconstrictor in atherosclerotic coronary arteries. To investigate the relation between histamine and NO production in intimal smooth muscle cells (SMCs), we studied the effect of histamine on inducible NO synthase (iNOS) expression in the SMCs. METHODS AND RESULTS In cultured human intimal SMCs, histamine increased NO production, iNOS expression, and NF-kappaB nuclear translocation, which were inhibited by histamine H1 blocker and NF-kappaB inhibitor. Luciferase assay using -8.3 kb upstream of human iNOS promoter region and electrophoretic mobility shift assay suggested that a NF-kappaB motif located at -3922 to -3914 would be necessary for histamine-inducible promoter activity. In addition, H1 blocker, NF-kappaB inhibitor, and dominant negative IkappaB alpha or IkappaB kinase beta downregulated the histamine-induced iNOS promoter activity. In the human aorta, histamine content was estimated to be 310+/-66 pmol/mg protein in the atherosclerotic intima, while that was to be 43+/-22 pmol/mg protein in the media (P<0.001). CONCLUSIONS Histamine stimulates intimal SMCs to increase iNOS expression via H1 receptors and NF-kappaB signaling pathway. Histamine could be one of NO-regulating factors, by inducing iNOS expression in intimal SMCs, and may be related to atherogenesis.
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Affiliation(s)
- Akihide Tanimoto
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi, Kitakyushu 807-8555, Japan.
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Differentiation of monocytes into macrophages induces the upregulation of histamine H1 receptor. J Allergy Clin Immunol 2007; 119:472-81. [DOI: 10.1016/j.jaci.2006.09.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2006] [Revised: 07/26/2006] [Accepted: 09/22/2006] [Indexed: 11/23/2022]
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Kovacic JC, Muller DWM, Graham RM. Actions and therapeutic potential of G-CSF and GM-CSF in cardiovascular disease. J Mol Cell Cardiol 2006; 42:19-33. [PMID: 17109881 DOI: 10.1016/j.yjmcc.2006.10.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2006] [Accepted: 10/02/2006] [Indexed: 01/16/2023]
Abstract
Despite their names, the cytokines granulocyte- and granulocyte-macrophage-colony stimulating factor (G-CSF and GM-CSF respectively) have actions far beyond simply stimulating the proliferation of neutrophil and monocyte lineage cells. A comprehensive body of evidence now exists demonstrating that G-CSF and GM-CSF effectively mobilize bone-marrow-derived progenitor cells into the peripheral circulation. These mobilized progenitor cells can be conveniently harvested for use in reconstituting bone marrow by transplantation after myelo-ablative treatment of hematological malignancies. In addition, much evidence has recently emerged to suggest that these cytokines may have multiple direct and indirect beneficial cardiovascular effects--including neovascularization of ischemic myocardium and reducing the extent of myocardial damage after infarction. Based on this knowledge and a strong safety record in hematological applications, a number of early clinical trials have evaluated the use of G-CSF or GM-CSF in patients with both acute and chronic myocardial ischemia. Although the interpretation of these trials is complicated by heterogeneity in study design, small patient numbers and methodological concerns related to appropriate selection and blinding of patients, the results of ongoing larger phase II/III trials should soon be available to determine if these agents will be useful additions to the cardiovascular armamentarium.
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Steffel J, Arnet C, Akhmedov A, Iseli SM, Lüscher TF, Tanner FC. Histamine differentially interacts with tumor necrosis factor-alpha and thrombin in endothelial tissue factor induction: the role of c-Jun NH2-terminal kinase. J Thromb Haemost 2006; 4:2452-60. [PMID: 16938121 DOI: 10.1111/j.1538-7836.2006.02175.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Histamine plays an important role in vascular disease. Tissue factor (TF) expression is induced in vascular inflammation and acute coronary syndromes. OBJECTIVES This study examined the effect of histamine on tumor necrosis factor-alpha- (TNF-alpha-) vs. thrombin-induced endothelial TF expression. METHODS AND RESULTS Histamine (10(-8)-10(-5) mol L-1), TNF-alpha (5 ng mL-1), and thrombin (1 U mL-1) induced TF expression in human endothelial cells. Although TF expression by TNF-alpha and thrombin was identical, histamine augmented TNF-alpha-induced expression 7.0-fold, but thrombin-induced expression only 2.6-fold. Similar responses occurred with TF activity. The H1-receptor antagonist mepyramine abrogated these effects. Differential augmentation by histamine was also observed at the mRNA level. Histamine-induced p38 activation preceded a weak second activation to both TNF-alpha and thrombin. Histamine-induced c-Jun NH2-terminal kinase (JNK) activation was followed by a strong second activation to TNF-alpha, and less to thrombin. Selective inhibition of this second JNK activation by SP600125 reduced TF induction to histamine plus TNF-alpha by 67%, but to histamine plus thrombin by only 32%. Histamine augmented TNF-alpha- and thrombin-induced vascular cell adhesion molecule 1 (VCAM-1) expression to a similar extent. Consistent with this observation, VCAM-1 induction to TNF-alpha and thrombin was mediated by p38, but not by JNK. CONCLUSIONS Histamine differentially augments TNF-alpha- vs. thrombin-induced TF expression and activity, which is mediated by the H1-receptor, occurs at the mRNA level, and is related to differential JNK activation.
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Affiliation(s)
- J Steffel
- Cardiovascular Research, Physiology Institute, University of Zürich, and Cardiology, Cardiovascular Center, University Hospital Zürich, Switzerland
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Ditiatkovski M, Toh BH, Bobik A. GM-CSF Deficiency Reduces Macrophage PPAR-γ Expression and Aggravates Atherosclerosis in ApoE-Deficient Mice. Arterioscler Thromb Vasc Biol 2006; 26:2337-44. [PMID: 16873730 DOI: 10.1161/01.atv.0000238357.60338.90] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective—
Granulocyte-macrophage colony-stimulating factor (GM-CSF) is expressed in atherosclerotic lesions but its significance for lesion development is unknown. Consequently, we investigated the significance of GM-CSF expression for development of atherosclerotic lesions in apolipoprotein E-deficient (apoE
−/−
) mice.
Methods and Results—
We generated apoE
−/−
mice deficient in GM-CSF (apoE
−/−
.GM-CSF
−/−
mice), fed them a high-fat diet, and compared lesion development with apoE
−/−
mice. We measured lesion size, macrophage, smooth muscle cell, and collagen accumulation at the aortic sinus, and expression of genes that regulate cholesterol transport and inflammation. No differences in serum cholesterol were found between the 2 groups. Lesion size in hyperlipidemic apoE
−/−
.GM-CSF
−/−
increased by 30% (
P
<0.05), macrophage accumulation doubled, and collagen content reduced by 15% (
P
<0.05); smooth muscle cell accumulation and vascularity were unaffected. Analysis of PPAR-γ, ABCA1, and CD36 in lesions showed reduced expression (50%, 65%, and 55%, respectively), whereas SR-A doubled. In peritoneal macrophages, PPAR-γ and ABCA1 expression was also reduced by 50% and 70%, respectively, as was cholesterol efflux, by 50%. In lesions, pro-inflammatory MCP-1 and tumor necrosis factor (TNF)-α expression increased 2- and 3.5-fold, respectively, vascular cell adhesion molecule (VCAM)-1 expression enhanced and interleukin (IL)-1 receptor antagonist reduced by 50%.
Conclusions—
GM-CSF deficiency increases atherosclerosis under hypercholesterolemic conditions, indicating antiatherogenic role for GM-CSF. We suggest this protective role is mediated by PPAR-γ and ABCA1, molecules that affect cholesterol homeostasis and inflammation.
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Affiliation(s)
- Michael Ditiatkovski
- Cell Biology Laboratory, Monash University, Melbourne, Victoria, 8008, Australia.
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Swan C, Richards SA, Duroudier NP, Sayers I, Hall IP. Alternative promoter use and splice variation in the human histamine H1 receptor gene. Am J Respir Cell Mol Biol 2006; 35:118-26. [PMID: 16484687 DOI: 10.1165/rcmb.2005-0408oc] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Upstream gene structure and mRNA expression of the human histamine H1 receptor gene was investigated in cells relevant to the pathogenesis of asthma, (primary cultured human airway smooth muscle (HASM) cells, primary cultured human bronchial epithelial cells and bronchial epithelial cell line [BEAS2B]), and other tissues known to express histamine H1 receptors (placenta and brain). Splice variation of the 5' terminal exons gave three separate locations for novel promoters upstream of the detected transcription start sites. Further splice variants in the 5' untranslated region were also observed. Transient transfections of promoter/luciferase constructs showed these regions directed expression in HASM cells and BEAS2B cells. Polymorphism screening of the major regulatory regions identified a number of novel single-nucleotide polymorphisms. Expression of splice variants was confirmed by real-time PCR assays. Results showed one 5' terminal exon splice variant, comprising exons B/K, expressed preferentially in all tissues. Interestingly, the other 5' terminal exon splice variants showed tissue-specific patterns of expression, with variant F/K expressed negligibly (0.1%) in HASM cells, but accounting for 19.3% and 8.3% of total expression in BEAS2B cells and differentiated human bronchial epithelial cells, respectively. Splice variant A/K was second most highly expressed in differentiated human bronchial epithelial cells (23%), whereas its expression in BEAS2B and HASM cells was 1.7% and 4.4%, respectively. These data suggest the use of alternative promoters directing human H1 receptor gene expression, both within and between cell types.
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Affiliation(s)
- Caroline Swan
- Division of Therapeutics and Molecular Medicine, D Floor, South Block, University of Nottingham, Queen's Medical Centre, Nottingham NG7 2UH, United Kingdom.
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Ai W, Takaishi S, Wang TC, Fleming JV. Regulation of l‐Histidine Decarboxylase and Its Role in Carcinogenesis. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 2006; 81:231-70. [PMID: 16891173 DOI: 10.1016/s0079-6603(06)81006-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Wandong Ai
- Division of Digestive and Liver Diseases, Department of Medicine, Columbia University, Irving Cancer Research Center, New York, New York 10032, USA
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Sasaguri Y, Wang KY, Tanimoto A, Tsutsui M, Ueno H, Murata Y, Kohno Y, Yamada S, Ohtsu H. Role of histamine produced by bone marrow-derived vascular cells in pathogenesis of atherosclerosis. Circ Res 2005; 96:974-81. [PMID: 15831815 DOI: 10.1161/01.res.0000166325.00383.ed] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To clarify the role of histamine-producing cells and its origin in atherosclerosis, we investigated histidine decarboxylase (HDC; histamine-producing enzyme) expression in murine arteries with vascular injuries after the animal had received transplanted bone marrow (BM) from green fluorescent protein (GFP)-transgenic mice. The neointima in the ligated carotid arteries contained BM-derived HDC+ cells that expressed macrophage (Mac-3) or smooth muscle cell antigen (alpha-SMA). In contrast, the HDC+ BM-derived cells, which were positive for Mac-3, were mainly located in the adventitia in the cuff replacement model. In apolipoprotein E-knockout mice on a high cholesterol diet, BM-derived cells expressing Mac-3 in the atheromatous plaques were also positive for HDC. In comparison with wild-type mice, HDC-/- mice showed reduced neointimal thickening and a decreased intima-to-media ratio after ligation and cuff replacement. These results indicate that histamine produced from BM-derived progenitor cells, which could transdifferentiate into SMC- or macrophage-like cells, are important for the formation of neointima and atheromatous plaques.
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Affiliation(s)
- Yasuyuki Sasaguri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental of Health, Kitakyushu, Japan.
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