1
|
Chen J, Gong S, Wan X, Gao X, Wang C, Zeng F, Zhao C, Liu B, Huang Y. Hypolipidemic properties of Chlorella pyrenoidosa organic acids via AMPK/HMGCR/SREBP-1c pathway in vivo. Food Sci Nutr 2021; 9:459-468. [PMID: 33473307 PMCID: PMC7802577 DOI: 10.1002/fsn3.2014] [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: 07/11/2020] [Revised: 10/23/2020] [Accepted: 11/02/2020] [Indexed: 12/03/2022] Open
Abstract
The aim of this study was to explore the effects and mechanisms of 95% ethanol extract of Chlorella pyrenoidosa (CPE95) on lipid metabolism in hyperlipidemic rats. For the sake of chemical composition analysis of CPE95, liquid chromatography-mass spectrometry (LC-MS) was used for determination. After treatment with CPE95, serum high-density lipoprotein cholesterol content of the hyperlipidemic rats was increased, while the contents of cholesterol, triglyceride, and low-density lipoprotein cholesterol were decreased strikingly. Moreover, the result of histopathology analysis showed that the accumulation and fatty deformation of the livers were relieved. Real-time quantitative PCR and Western blotting were used to determine the expression levels of lipid metabolism-related genes. The gene expression level of adenosine 5'-monophosphate-activated protein kinase was descended, and expressions of sterol regulatory element-binding protein-1c, acetyl-CoA carboxylase, and 3-hydroxy-3-methylglutaryl coenzyme A reductase were all downregulated in the CPE95-treated rats. It suggested that CPE95 may effectively improve the hyperlipidemia in rats and would be potential for functional food component to reduce blood lipid.
Collapse
Affiliation(s)
- Jie Chen
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Shiyu Gong
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Xuzhi Wan
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Xiaoxiang Gao
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Change Wang
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Feng Zeng
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- National Engineering Research Center of JUNCAO TechnologyFujian Agriculture and Forestry UniversityFuzhouChina
| | - Chao Zhao
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Engineering Research Center of Fujian‐Taiwan Special Marine Food Processing and NutritionMinistry of EducationFuzhouChina
- Key Laboratory of Marine Biotechnology of Fujian ProvinceInstitute of OceanologyFujian Agriculture and Forestry UniversityFuzhouChina
| | - Bin Liu
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Ying Huang
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- National Engineering Research Center of JUNCAO TechnologyFujian Agriculture and Forestry UniversityFuzhouChina
| |
Collapse
|
2
|
Chang G, Wang L, Ma N, Zhang W, Zhang H, Dai H, Shen X. Histamine activates inflammatory response and depresses casein synthesis in mammary gland of dairy cows during SARA. BMC Vet Res 2018; 14:168. [PMID: 29792195 PMCID: PMC5966854 DOI: 10.1186/s12917-018-1491-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/10/2018] [Indexed: 11/25/2022] Open
Abstract
Background Mounting evidences observed that subacute ruminal acidosis (SARA) induced by high concentration (HC) diet increases the translocation of histamine from digestive tract into circulation causing a diverse of diseases in dairy cows. However, it is largely unknown how it does affect the function of mammary gland and milk quality. Hence, this study aims to observe the effects of histamine derived from the digestive tract on the inflammatory response and casein synthesis in the mammary glands during SARA. Twelve cows fitted rumen fistula were randomly divided into either control group administrated low concentration (LC) diet (60% forage, n = 6) or treatment group administrated HC diet (40% forage, n = 6) for 18 weeks. Results Our data showed that HC diet resulted in significant declines in rumen pH value, milk yield and milk quality, as well as longer duration of averaged pH value below 5.6 per day (more than 180 min) compared to LC diet, these findings confirmed SARA occurence. Our study also observed that SARA increased the content of histamine in rumen fluid, plasma, liver and mammary gland, and enhanced the mRNA expression of histamine specific receptor in the mammary gland. Additionally, we found that the mRNA expression of inflammatory response genes in mammary glands was increased, which was consistent with the protein expression results, showing that the protein kinase C(PKC) / nuclear factor kappa B (NF-κB) or protein kinase A (PKA) / NF-κB signalling pathways of the inflammatory response were activated. The mRNA expression of mTOR, P70S6K and αS1 in mammary glands were significantly decreased with the protein expression of mTOR, P70S6K and αS1-casein, and the phosphorylation levels of the mTOR and P70S6K proteins were also decreased. Conclusions Our study showed that the milk protein of lactating cows is depressed after long-term feeding of HC at the individual level, which was paralleled at the gene and protein levels. The inflammatory response in mammary gland caused by histamine derived from the digestive tract is related to the decline of casein synthesis. Our findings point to a new link between the inflammatory response and casein synthesis, but the understanding of the molecular mechanisms involved in this process will require further research. Electronic supplementary material The online version of this article (10.1186/s12917-018-1491-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Guangjun Chang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Lailai Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Nana Ma
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Wenwen Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Huanmin Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hongyu Dai
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xiangzhen Shen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China.
| |
Collapse
|
3
|
Song CH, Bui TT, Piao CH, Shin HS, Shon DH, Han EH, Kim HT, Chai OH. Rosae Multiflorae Fructus Hot Water Extract Inhibits a Murine Allergic Asthma Via the Suppression of Th2 Cytokine Production and Histamine Release from Mast Cells. J Med Food 2016; 19:853-9. [PMID: 27574849 DOI: 10.1089/jmf.2016.3736] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Mast cell-mediated anaphylactic reactions are involved in many allergic diseases, including asthma and allergic rhinitis. In Korea, where it has been used as a traditional medicine, Rosae Multiflorae fructus (RMF) is known to have potent antioxidative, analgesic, and anti-inflammatory activities and to have no obvious acute toxicity. However, its specific effect on asthma is still unknown. In this study, we evaluated whether or not RMF hot water extracts (RMFW) could inhibit ovalbumin (OVA)-induced allergic asthma and evaluated compound 48/80-induced mast cell activation to elucidate the mechanisms of asthma inhibition by RMFW. Oral administration of RMFW decreased the number of eosinophils and lymphocytes in the lungs of mice challenged by OVA and downregulated histological changes such as eosinophil infiltration, mucus accumulation, goblet cell hyperplasia, and collagen fiber deposits. In addition, RMFW significantly reduced T helper 2 cytokines, TNF-α, IL-4, and IL-6 levels in the BAL fluid of mice challenged by OVA. Moreover, RMFW suppressed compound 48/80-induced rat peritoneal mast cell degranulation and inhibited histamine release from mast cells induced by compound 48/80 in a dose-dependent manner. These results suggest that RMFW may act as an antiallergic agent by inhibitingTh2 cytokine production from Th2 cells and histamine release from mast cells, and could be used as a therapy for patients with Th2-mediated or mast cell-mediated allergic diseases.
Collapse
Affiliation(s)
- Chang Ho Song
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea.,2 Institute for Medical Sciences, Chonbuk National University Medical School , Jeonju, Republic of Korea
| | - Thi Tho Bui
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea
| | - Chun Hua Piao
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea
| | - Hee Soon Shin
- 3 Food Biotechnology Program, Korea University of Science and Technology , Daejeon, Republic of Korea.,4 Division of Nutrition and Metabolism Research, Korea Food Research Institute , Seongnam-si, Republic of Korea
| | - Dong-Hwa Shon
- 3 Food Biotechnology Program, Korea University of Science and Technology , Daejeon, Republic of Korea.,5 Division of Functional Food Research, Korea Food Research Institute , Seongnam-si, Republic of Korea
| | - Eui-Hyeog Han
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea.,2 Institute for Medical Sciences, Chonbuk National University Medical School , Jeonju, Republic of Korea
| | - Hyoung Tae Kim
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea
| | - Ok Hee Chai
- 1 Department of Anatomy, Chonbuk National University Medical School , Jeonju, Republic of Korea.,2 Institute for Medical Sciences, Chonbuk National University Medical School , Jeonju, Republic of Korea
| |
Collapse
|
4
|
Bae MJ, Shin HS, Chai OH, Han JG, Shon DH. Inhibitory effect of unicellular green algae (Chlorella vulgaris) water extract on allergic immune response. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:3133-3136. [PMID: 23426977 DOI: 10.1002/jsfa.6114] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 02/06/2013] [Accepted: 02/20/2013] [Indexed: 06/01/2023]
Abstract
BACKGROUND Chlorella is used as a functional food in East Asia and has been shown to enhance immune system function. However, there has been no direct evidence of the suppressive effect of a hot water extract of Chlorella vulgaris (CVE) on histamine-mediated allergic responses. RESULTS The antihistamine activity of CVE was analysed using rat peritoneal mast cells (RPMCs) stimulated by compound 48/80. For in vivo verification, ovalbumin (OVA)-immunised BALB/c mice were treated with CVE orally. Serum immunoglobulin E (IgE) levels and splenocyte cytokine levels were determined by enzyme-linked immunosorbent assay (ELISA). CVE prevented histamine release through degranulation of mast cells by blocking the uptake of extracellular Ca²⁺ into RPMCs. Moreover, CVE administration inhibited serum IgE overproduction by OVA via induction of T helper 1 (Th1) skewing that was dependent on interferon-γ (IFN-γ) and interleukin 12 (IL-12) secretion. CONCLUSION The results of this study clearly demonstrate that CVE acts as an antiallergic dietary agent by suppressing histamine release via its enhancive effect on Th1-related responses.
Collapse
Affiliation(s)
- Min-Jung Bae
- Division of Metabolism and Functionality Research, Korea Food Research Institute, 1201-62, Anyangpangyo-ro, Bundang-gu, Seognam-si, Kyeonggi-do, 463-746, Republic of Korea
| | | | | | | | | |
Collapse
|
5
|
Affiliation(s)
- Charles M. Marson
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon Street, London WC1H OAJ, United Kingdom
| |
Collapse
|
6
|
Regulation of the immune response and inflammation by histamine and histamine receptors. J Allergy Clin Immunol 2011; 128:1153-62. [PMID: 21824648 DOI: 10.1016/j.jaci.2011.06.051] [Citation(s) in RCA: 207] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 06/01/2011] [Accepted: 06/23/2011] [Indexed: 02/04/2023]
Abstract
Histamine is a biogenic amine with extensive effects on many cell types, including important immunologic cells, such as antigen-presenting cells, natural killer cells, epithelial cells, and T and B lymphocytes. Histamine and its 4 receptors represent a complex system of immunoregulation with distinct effects dependent on receptor subtypes and their differential expression. These are influenced by the stage of cell differentiation, as well as microenvironmental influences, leading to the selective recruitment of effector cells into tissue sites accompanied by effects on cellular maturation, activation, polarization, and effector functions, which lead to tolerogenic or proinflammatory responses. In this review we discuss the regulation of histamine secretion, receptor expression, and differential activation of cells within both the innate and adaptive immune responses. It is clear that the effects of histamine on immune homeostasis are dependent on the expression and activity of the 4 currently known histamine receptors, and we also recognize that 100 years after the original identification of this biogenic amine, we still do not fully understand the complex regulatory interactions between histamine and the host immune response to everyday microbial and environmental challenges.
Collapse
|
7
|
Hirasawa N, Ohuchi K. [Roles of histamine in the exacerbated allergic dermatitis]. YAKUGAKU ZASSHI 2011; 131:179-84. [PMID: 21297358 DOI: 10.1248/yakushi.131.179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We established a novel dermatitis model in mice earlobes and analyzed the roles of histamine using specific antagonists for histamine receptors. After sensitization with picryl chloride (PiCl) by painting it on the earlobes of cyclophosphamide-treated mice, 12-O-tetradecanoylphorbol 13-acetate (TPA) was painted twice at the same site, and then allergic inflammation was induced by painting with PiCl. Histamine antagonists and cyclosporin A were administered i.v. The application of TPA shifted the PiCl-induced allergic inflammation from a delayed-type response to a biphasic response and increased the infiltration of eosinophils and mast cells at the inflammatory site. In this model, the PiCl-induced increase in the thickness of the earlobe in the immediate phase was suppressed by the histamine H₁ antagonist pyrilamine. In contrast, the increase in the swelling in the late phase and the infiltration of eosinophils were suppressed by the H₃/H₄ antagonist thioperamide. The inhibitory effect of the combined treatment with pyrilamine and thioperamide on TPA-modified contact dermatitis was as potent as that of cyclosporin A. Histamine plays significant roles in early-phase swelling via H₁ receptors and in late-phase swelling via H₃/H₄ receptors in this TPA-modified allergic dermatitis model.
Collapse
|
8
|
2,4-Diaminopyrimidines as histamine H4 receptor ligands—Scaffold optimization and pharmacological characterization. Bioorg Med Chem 2009; 17:7186-96. [DOI: 10.1016/j.bmc.2009.08.059] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 08/26/2009] [Accepted: 08/28/2009] [Indexed: 11/21/2022]
|
9
|
Strakhova MI, Cuff CA, Manelli AM, Carr TL, Witte DG, Baranowski JL, Vortherms TA, Miller TR, Rundell L, McPherson MJ, Adair RM, Brito AA, Bettencourt BM, Yao BB, Wetter JM, Marsh KC, Liu H, Cowart MD, Brioni JD, Esbenshade TA. In vitro and in vivo characterization of A-940894: a potent histamine H4 receptor antagonist with anti-inflammatory properties. Br J Pharmacol 2009; 157:44-54. [PMID: 19413570 DOI: 10.1111/j.1476-5381.2009.00236.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE The histamine H4 receptor is widely expressed in cells of immune origin and has been shown to play a role in a variety of inflammatory processes mediated by histamine. In this report, we describe the in vitro and in vivo anti-inflammatory properties of a potent histamine H4 receptor antagonist, A-940894 (4-piperazin-1-yl-6,7-dihydro-5H-benzo[6,7]cyclohepta[1,2-d]pyrimidin-2-ylamine). EXPERIMENTAL APPROACH We have analysed the pharmacological profile of A-940894 at mouse native, rat recombinant and human recombinant and native, histamine H4 receptors by radioligand binding, calcium mobilization, mast cell shape change, eosinophil chemotaxis assays and in the mouse model of zymosan-induced peritonitis. KEY RESULTS A-940894 potently binds to both human and rat histamine H4 receptors and exhibits considerably lower affinity for the human histamine H1, H2 or H3 receptors. It potently blocked histamine-evoked calcium mobilization in the fluorometric imaging plate reader assays and inhibited histamine-induced shape change of mouse bone marrow-derived mast cells and chemotaxis of human eosinophils in vitro. In a mouse mast cell-dependent model of zymosan-induced peritonitis, A-940894 significantly blocked neutrophil influx and reduced intraperitoneal prostaglandin D2 levels. Finally, A-940894 has good pharmacokinetic properties, including half-life and oral bioavailability in rats and mice. CONCLUSIONS AND IMPLICATIONS These data suggest that A-940894 is a potent and selective histamine H4 receptor antagonist with pharmacokinetic properties suitable for long-term in vivo testing and could serve as a useful tool for the further characterization of histamine H4 receptor pharmacology.
Collapse
Affiliation(s)
- M I Strakhova
- Neuroscience Research, Global Pharmaceutical Research Division, Abbott Laboratories, Abbott Park, IL 60064, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
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
|
11
|
Smits RA, de Esch IJP, Zuiderveld OP, Broeker J, Sansuk K, Guaita E, Coruzzi G, Adami M, Haaksma E, Leurs R. Discovery of quinazolines as histamine H4 receptor inverse agonists using a scaffold hopping approach. J Med Chem 2009; 51:7855-65. [PMID: 19053770 DOI: 10.1021/jm800876b] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
From a series of small fragments that was designed to probe the histamine H(4) receptor (H(4)R), we previously described quinoxaline-containing fragments that were grown into high affinity H(4)R ligands in a process that was guided by pharmacophore modeling. With a scaffold hopping exercise and using the same in silico models, we now report the identification and optimization of a series of quinazoline-containing H(4)R compounds. This approach led to the discovery of 6-chloro-N-(furan-3-ylmethyl)2-(4-methylpiperazin-1-yl)quinazolin-4-amine (VUF10499, 54) and 6-chloro-2-(4-methylpiperazin-1-yl)-N-(thiophen-2-ylmethyl)quinazolin-4-amine (VUF10497, 55) as potent human H(4)R inverse agonists (pK(i) = 8.12 and 7.57, respectively). Interestingly, both compounds also possess considerable affinity for the human histamine H(1) receptor (H(1)R) and therefore represent a novel class of dual action H(1)R/H(4)R ligands, a profile that potentially leads to added therapeutic benefit. Compounds from this novel series of quinazolines are antagonists at the rat H(4)R and were found to possess anti-inflammatory properties in vivo in the rat.
Collapse
Affiliation(s)
- Rogier A Smits
- Department of Pharmacochemistry, Faculty of Exact Sciences, Leiden/Amsterdam Center for Drug Research, Division of Medicinal Chemistry, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Smits RA, Lim HD, Hanzer A, Zuiderveld OP, Guaita E, Adami M, Coruzzi G, Leurs R, de Esch IJP. Fragment Based Design of New H4 Receptor−Ligands with Anti-inflammatory Properties in Vivo. J Med Chem 2008; 51:2457-67. [PMID: 18357976 DOI: 10.1021/jm7014217] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rogier A. Smits
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Herman D. Lim
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Agnes Hanzer
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Obbe P. Zuiderveld
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Elena Guaita
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Maristella Adami
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Gabriella Coruzzi
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Rob Leurs
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| | - Iwan J. P. de Esch
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands, Department of Human Anatomy, Pharmacology, and Forensic Medicine, Section of Pharmacology, University of Parma, via Volturno 39, 43100 Parma, Italy
| |
Collapse
|
13
|
Smits RA, Lim HD, Stegink B, Bakker RA, de Esch IJP, Leurs R. Characterization of the Histamine H4 Receptor Binding Site. Part 1. Synthesis and Pharmacological Evaluation of Dibenzodiazepine Derivatives. J Med Chem 2006; 49:4512-6. [PMID: 16854056 DOI: 10.1021/jm051008s] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of dibenzodiazepine derivatives was synthesized to probe the binding site of the recently discovered histamine H4 receptor (H4R). Optimization of the lead structure clozapine (2) resulted in (E)-7-chloro-11-(4-methylpiperazin-1-yl)dibenzo[b,f][1,4]oxazepine (7j), a potent H4R agonist (H4R, pKi = 7.6). Pharmacological data suggests that the series of nonimidazole compounds can be used to describe the orthosteric binding site of the H4R because both 2 and 7j displace [3H]histamine in a competitive manner. Furthermore, it is demonstrated that the effects of 7j are competitively antagonized by the selective H4R antagonist JNJ 7777120 (1), indicating considerable overlap of their binding sites. On the basis of the derived structure-activity relationships and additional pharmacological results, a pharmacophore model was constructed, which will be the premise for the design of novel H4R ligands.
Collapse
Affiliation(s)
- Rogier A Smits
- Leiden/Amsterdam Center for Drug Research (LACDR), Division of Medicinal Chemistry, Department of Pharmacochemistry, Faculty of Exact Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | | | | | | | | | | |
Collapse
|
14
|
Rossoni G, Manfredi B, Razzetti R, Civelli M, Berti F. Positive interaction of the novel beta2-agonist carmoterol and tiotropium bromide in the control of airway changes induced by different challenges in guinea-pigs. Pulm Pharmacol Ther 2006; 20:250-7. [PMID: 16533614 DOI: 10.1016/j.pupt.2006.01.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2005] [Revised: 01/09/2006] [Accepted: 01/25/2006] [Indexed: 10/24/2022]
Abstract
This study evaluated the bronchodilating activity of the beta(2)-agonist carmoterol and the muscarinic M(3)-antagonist tiotropium, given intratracheally alone or in combination in anaesthetized artificially ventilated normal and actively sensitized guinea-pigs. Carmoterol (0.3-100pmol) and tiotropium (10-1000pmol) were superfused (0.01ml/min) for 5min before challenges with acetylcholine (20mug/kg i.v.), histamine (10mug/kg i.v.) or ovalbumin (5mg/kg i.v.). Both compounds given alone were markedly active against all the challenges. Tiotropium resulted more effective towards cholinergic challenge and carmoterol was very potent against histamine and ovalbumin-induced reaction, being effective already at 1pmol. In the presence of tiotropium, the bronchodilating activity of carmoterol was significantly augmented. The ED(50) value of carmoterol on the acetylcholine challenge was reduced by about 10 and 28 times (0.1 and 0.3pmol of tiotropium), that on the histamine one by 4.5 and 13 times (1 and 3pmol of tiotropium) and that on the ovalbumin-induced one by 8 and 25 times (10 and 30pmol of tiotropium). A positive interaction was also evident when other parameters were evaluated. The histamine-induced release of thromboxane B(2) was markedly reduced (56%, P<0.001) by combining completely ineffective doses of the two drugs (0.3 and 3pmol for carmoterol and tiotropium, respectively). In ovalbumin-challenged animals the time to death, amounting in control animals to 7.2+/-0.9min, was dose-dependently prolonged up to achieve complete protection from death with combination of 1 and 30pmol of carmoterol and tiotropium, respectively. The favorable interaction between carmoterol and tiotropium can represent a good option in the control of bronchopulmonary diseases marked by an increase of airway resistances.
Collapse
Affiliation(s)
- Giuseppe Rossoni
- Department of Pharmacological Sciences, University of Milan, Milan, Italy.
| | | | | | | | | |
Collapse
|
15
|
Abstract
Complications of sickle cell anaemia include vascular occlusion triggered by the adherence of sickle erythrocytes to endothelium in the postcapillary venules. Adherence can be promoted by inflammatory mediators that induce endothelial cell adhesion molecule expression and arrest flowing erythrocytes. The present study characterised the effect of histamine stimulation on the kinetics of sickle cell adherence to large vessel and microvascular endothelium under physiological flow. Increased sickle cell adherence was observed within minutes of endothelial activation by histamine and reached a maximum value within 30 min. At steady state, sickle cell adherence to histamine-stimulated endothelium was 47 +/- 4 adherent cells/mm(2), 2.6-fold higher than sickle cell adherence to unstimulated endothelial cells. Histamine-induced sickle cell adherence occurred rapidly and transiently. Studies using histamine receptor agonists and antagonists suggest that histamine-induced sickle cell adhesion depends on simultaneous stimulation of the H(2) and H(4) histamine receptors and endothelial P-selectin expression. These data show that histamine release may promote sickle cell adherence and vaso-occlusion. In vivo histamine release should be studied to determine its role in sickle complications and whether blocking of specific histamine receptors may prevent clinical complications or adverse effects from histamine release stimulated by opiate analgesic treatment.
Collapse
Affiliation(s)
- Matthew C Wagner
- School of Chemical and Biomolecular Engineering and Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | | | | |
Collapse
|