1
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Gao Z, Lv J, Tong TT, Zhang K, Han YX, Zhao Y, Shen MM, Liu Y, Ban T, Sun Y. Role of the transient receptor potential melastatin 4 in inhibition effect of arsenic trioxide on the tumor biological features of colorectal cancer cell. PeerJ 2024; 12:e17559. [PMID: 38854798 PMCID: PMC11160432 DOI: 10.7717/peerj.17559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 05/21/2024] [Indexed: 06/11/2024] Open
Abstract
Background To investigate the effects of arsenic trioxide (ATO) on human colorectal cancer cells (HCT116) growth and the role of transient receptor potential melastatin 4 (TRPM4) channel in this process. Methods The viability of HCT116 cells was assessed using the CCK-8 assay. Western blot analysis was employed to examine the protein expression of TRPM4. The apoptosis of HCT116 cells was determined using TUNEL and Flow cytometry. Cell migration was assessed through the cell scratch recovery assay and Transwell cell migration assay. Additionally, Transwell cell invasion assay was performed to determine the invasion ability of HCT116 cells. Results ATO suppressed the viability of HCT116 cells in a dose-dependent manner, accompanied by a decline in cell migration and invasion, and an increase in apoptosis. 9-phenanthroline (9-Ph), a specific inhibitor of TRPM4, abrogated the ATO-induced upregulation of TRPM4 expression. Additionally, blocking TRPM4 reversed the effects of ATO on HCT116 cells proliferation, including restoration of cell viability, migration and invasion, as well as the inhibition of apoptosis. Conclusion ATO inhibits CRC cell growth by inducing TRPM4 expression, our findings indicate that ATO is a promising therapeutic strategy and TRPM4 may be a novel target for the treatment of CRC.
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Affiliation(s)
- Zhan Gao
- General Medical Department, Heilongjiang Provincial Hospital, Harbin, Heilongjiang, China
| | - Jing Lv
- Department of Pediatric Dentistry, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Ting-Ting Tong
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Kai Zhang
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Yu-Xuan Han
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Yu Zhao
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Mei-Mei Shen
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Yang Liu
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
| | - Tao Ban
- Department of General Surgery, The Fourth Affiliated Hospital of Harbin Medical University, and Department of Pharmacology (State Key Labratoray -Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, Heilongjiang, China
- Heilongjiang Academy of Medical Sciences, Harbin, Heilongjiang, China
| | - Yu Sun
- Harbin Medical University Science Park, Harbin Medical University, Harbin, Heilongjiang, China
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2
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Matsuda K, Arkwright PD, Mori Y, Oikawa MA, Muko R, Tanaka A, Matsuda H. A Rapid Shift from Chronic Hyperoxia to Normoxia Induces Systemic Anaphylaxis via Transient Receptor Potential Ankyrin 1 Channels on Mast Cells. THE JOURNAL OF IMMUNOLOGY 2020; 205:2959-2967. [PMID: 33097573 DOI: 10.4049/jimmunol.2000149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 09/28/2020] [Indexed: 01/11/2023]
Abstract
Extensive activation of mast cells is the major switch that triggers systemic anaphylaxis, resulting in the subsequent release of anaphylactic mediators into circulation. We previously demonstrated that rapid changes in oxygen tension lead to mast cell degranulation, and the released tryptase triggers retinal angiogenesis in a murine oxygen-induced retinopathy model. However, whether a rapid shift from hyperoxia to normoxia (relative hypoxic stress) is a risk factor for systemic anaphylaxis remains unknown. In this study, we demonstrated that the relative hypoxia stress induces systemic mast cell activation via transient receptor potential ankyrin 1 (TRPA1) channels, which immediately leads to hypothermia and increased vascular permeability in adult mice. Although mast cell-deficient or TRPA1-deficient mice did not exhibit anaphylactic symptoms following a rapid sift to normoxia, preinjection with bone marrow-derived cultured mast cells (BMCMCs) derived from wild-type TRPA1-expressing mice restored anaphylactic responses. In addition, we found that the rapid reductions in oxygen tension in a culture atmosphere triggered the degranulation of BMCMCs derived from wild-type TRPA1-expressing mice but not that of BMCMCs derived from TRPA1-deficient mice. In human LAD2 mast cells, the relative hypoxic stress led to the degranulation, which was suppressed by the addition of a TRPA1 inhibitor. Gradual reductions from hyperoxia to normoxia led to no anaphylactic symptoms. Our results demonstrated that TRPA1-triggered mast cell degranulation is a novel pathway that induces anaphylactic shock without Ag-Ab reactions. These findings introduce a potential role for oxygen in inducing mast cell-dependent anaphylaxis and highlight the need to reconsider chronic pure oxygen therapy for anoxic diseases.
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Affiliation(s)
- Kenshiro Matsuda
- Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Peter D Arkwright
- Lydia Becker Institute of Immunity and Inflammation, University of Manchester, Manchester M13 9WL, United Kingdom
| | - Yasuo Mori
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Masa-Aki Oikawa
- Diagnostic and Research Laboratory, Equine Veterinary Medical Center, Doha, Qatar; and
| | - Ryo Muko
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Akane Tanaka
- Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan.,Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Hiroshi Matsuda
- Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan;
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3
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Jansen C, Shimoda LMN, Starkus J, Lange I, Rysavy N, Maaetoft-Udsen K, Tobita C, Stokes AJ, Turner H. In vitro exposure to Hymenoptera venom and constituents activates discrete ionotropic pathways in mast cells. Channels (Austin) 2020; 13:264-286. [PMID: 31237176 PMCID: PMC8670737 DOI: 10.1080/19336950.2019.1629225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Calcium entry is central to the functional processes in mast cells and basophils that contribute to the induction and maintenance of inflammatory responses. Mast cells and basophils express an array of calcium channels, which mediate responses to diverse stimuli triggered by small bioactive molecules, physicochemical stimuli and immunological inputs including antigens and direct immune cell interactions. These cells are also highly responsive to certain venoms (such as Hymenoptera envenomations), which cause histamine secretion, cytokine release and an array of pro-inflammatory functional responses. There are gaps in our understanding of the coupling of venom exposure to specific signaling pathways such as activation of calcium channels. In the present study, we performed a current survey of a model mast cell line selected for its pleiotropic responsiveness to multiple pro-inflammatory inputs. As a heterogenous stimulus, Hymenoptera venom activates multiple classes of conductance at the population level but tend to lead to the measurement of only one type of conductance per cell, despite the cell co-expressing multiple channel types. The data show that ICRAC, IARC, and TRPV-like currents are present in the model mast cell populations and respond to venom exposure. We further assessed individual venom components, specifically secretagogues and arachidonic acid, and identified the conductances associated with these stimuli in mast cells. Single-cell calcium assays and immunofluorescence analysis show that there is heterogeneity of channel expression across the cell population, but this heterogeneity does not explain the apparent selectivity for specific channels in response to exposure to venom as a composite stimulus.
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Affiliation(s)
- C Jansen
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - L M N Shimoda
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - J Starkus
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - I Lange
- b Department of Pharmaceutical Sciences , Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo , Hilo , Hawai'i , USA
| | - N Rysavy
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - K Maaetoft-Udsen
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - C Tobita
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
| | - A J Stokes
- c Department of Cell and Molecular Biology, Laboratory of Experimental Medicine, John A. Burns School of Medicine , University of Hawai'i , Honolulu , Hawai'i , USA
| | - H Turner
- a Laboratory of Immunology and Signal Transduction, Division of Natural Sciences and Mathematics , Chaminade University , Honolulu , Hawai'I , USA
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4
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Interaction between foods and nonsteroidal anti-inflammatory drugs and exercise in the induction of anaphylaxis. Curr Opin Allergy Clin Immunol 2018; 18:310-316. [DOI: 10.1097/aci.0000000000000461] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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5
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Corneal Nerve Fiber Structure, Its Role in Corneal Function, and Its Changes in Corneal Diseases. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3242649. [PMID: 29238714 PMCID: PMC5697388 DOI: 10.1155/2017/3242649] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/27/2017] [Accepted: 10/15/2017] [Indexed: 01/04/2023]
Abstract
Recently, in vivo confocal microscopy is used to examine the human corneal nerve fibers morphology. Corneal nerve fiber architecture and its role are studied in healthy and pathological conditions. Corneal nerves of rats were studied by nonspecific acetylcholinesterase (NsAchE) staining. NsAchE-positive subepithelial (stromal) nerve fiber has been found to be insensitive to capsaicin. Besides, NsAchE-negative but capsaicin-sensitive subbasal nerve (leash) fibers formed thick mesh-like structure showing close interconnections and exhibit both isolectin B4- and transient receptor potential vanilloid channel 1- (TRPV1-) positive. TRPV1, TRPV3, TRPA (ankyrin) 1, and TRPM (melastatin) 8 are expressed in corneal nerve fibers. Besides the corneal nerve fibers, the expressions of TRPV (1, 3, and 4), TRPC (canonical) 4, and TRPM8 are demonstrated in the corneal epithelial cell membrane. The realization of the importance of TRP channels acting as polymodal sensors of environmental stresses has identified potential drug targets for corneal disease. The pathophysiological conditions of corneal diseases are associated with disruption of normal tissue innervation, especially capsaicin-sensitive small sensory nerve fibers. The relationships between subbasal corneal nerve fiber morphology and neurotrophic keratopathy in corneal diseases are well studied. The recommended treatment for neurotrophic keratopathy is administration of preservative free eye drops.
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6
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Zhang T, Tanida M, Uchida K, Suzuki Y, Yang W, Kuda Y, Kurata Y, Tominaga M, Shibamoto T. Mouse Anaphylactic Hypotension Is Characterized by Initial Baroreflex Independent Renal Sympathoinhibition Followed by Sustained Renal Sympathoexcitation. Front Physiol 2017; 8:669. [PMID: 28936180 PMCID: PMC5594092 DOI: 10.3389/fphys.2017.00669] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 08/23/2017] [Indexed: 01/14/2023] Open
Abstract
Aim: The hemodynamic response to mouse systemic anaphylaxis is characterized by an initial hypertension followed by sustained hypotension. However, the defense mechanisms of the sympathetic nervous system against this circulatory disturbance is not known. Here, we investigated the renal sympathetic nerve activity (RSNA) response to mouse systemic anaphylaxis, along with the roles of carotid sinus baroreceptor, vagal nerves and the transient receptor potential vanilloid type 1 channel (TRPV1). Methods: Male ovalbumin-sensitized C57BL/6N mice were used under pentobarbital anesthesia. RSNA, systemic arterial pressure (SAP) and heart rate (HR) were continuously measured for 60 min after the antigen injection. Results: Within 3 min after antigen injection, RSNA decreased along with a transient increase in SAP. Thereafter, RSNA showed a progressive increase during sustained hypotension. In contrast, HR continuously increased. Sinoaortic denervation, but not vagotomy, significantly attenuated the renal sympathoexcitation and tachycardia from 30 and 46 min, respectively, after antigen. The responses of RSNA, SAP and HR to anaphylaxis were not affected by pretreatment with a TRPV1 inhibitor, capsazepine, or by genetic knockout of TRPV1. Conclusion: The mouse systemic anaphylaxis causes a biphasic RSNA response with an initial baroreflex-independent decrease and secondary increase. The antigen-induced sympathoexcitation and tachycardia at the late stage are partly mediated by carotid sinus baroreceptors. Either vagal nerve or TRPV1 does not play any significant roles in the RSNA and HR responses in anesthetized mice.
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Affiliation(s)
- Tao Zhang
- Department of Physiology II, Kanazawa Medical UniversityUchinada, Japan.,Department of Colorectal and Hernia Surgery, The Fourth Affiliated Hospital of China Medical UniversityShenyang, China
| | - Mamoru Tanida
- Department of Physiology II, Kanazawa Medical UniversityUchinada, Japan
| | - Kunitoshi Uchida
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, National Institutes of Natural SciencesOkazaki, Japan.,Department of Physiological Science and Molecular Biology, Fukuoka Dental CollegeFukuoka, Japan
| | - Yoshiro Suzuki
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, National Institutes of Natural SciencesOkazaki, Japan
| | - Wei Yang
- Department of Physiology II, Kanazawa Medical UniversityUchinada, Japan.,Department of Infectious Disease, The Sheng Jing Hospital of China Medical UniversityShenyang, China
| | - Yuhichi Kuda
- Department of Physiology II, Kanazawa Medical UniversityUchinada, Japan
| | - Yasutaka Kurata
- Department of Physiology II, Kanazawa Medical UniversityUchinada, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, National Institutes of Natural SciencesOkazaki, Japan
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7
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Samivel R, Kim DW, Son HR, Rhee YH, Kim EH, Kim JH, Bae JS, Chung YJ, Chung PS, Raz E, Mo JH. The role of TRPV1 in the CD4+ T cell-mediated inflammatory response of allergic rhinitis. Oncotarget 2016; 7:148-60. [PMID: 26700618 PMCID: PMC4807989 DOI: 10.18632/oncotarget.6653] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 11/21/2015] [Indexed: 12/21/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1), which has been identified as a molecular target for the activation of sensory neurons by various painful stimuli, was reported to regulate the signaling and activation of CD4+ T cells. However, the role of TRPV1 in CD4+ T cell in allergic rhinitis remains poorly understood. In this study, TRPV1 expression was localized in CD4+ T cells. Both knockout and chemical inhibition of TRPV1 suppressed Th2/Th17 cytokine production in CD4 T cells and Jurkat T cells, respectively, and can suppress T cell receptor signaling pathways including NF-κB, MAP kinase, and NFAT. In TRPV1 knockout allergic rhinitis (AR) mice, eosinophil infiltration, Th2/Th17 cytokines in the nasal mucosa, and total and ova-specific IgE levels in serum decreased, compared with wild-type AR mice. The TRPV1 antagonists, BCTC or theobromine, showed similar inhibitory immunologic effects on AR mice models. In addition, the number of TRPV1+/CD4+ inflammatory cells increased in the nasal mucosa of patients with AR, compared with that of control subjects. Thus, TRPV1 activation on CD4+ T cells is involved in T cell receptor signaling, and it could be a novel therapeutic target in AR.
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Affiliation(s)
- Ramachandran Samivel
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea.,Clinical Mucosal Immunology Study Group
| | - Hye Ran Son
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea
| | - Yun-Hee Rhee
- Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Eun Hee Kim
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Ji Hye Kim
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Jun-Sang Bae
- Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea.,Department of Premedical Course, Dankook University College of Medicine, Cheonan, South Korea
| | - Young-Jun Chung
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Phil-Sang Chung
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea
| | - Eyal Raz
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Ji-Hun Mo
- Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, South Korea.,Beckman Laser Institute Korea, Dankook University College of Medicine, Cheonan, South Korea.,Clinical Mucosal Immunology Study Group
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8
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Parenti A, De Logu F, Geppetti P, Benemei S. What is the evidence for the role of TRP channels in inflammatory and immune cells? Br J Pharmacol 2016; 173:953-69. [PMID: 26603538 DOI: 10.1111/bph.13392] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/25/2015] [Accepted: 11/10/2015] [Indexed: 12/11/2022] Open
Abstract
A complex network of many interacting mechanisms orchestrates immune and inflammatory responses. Among these, the cation channels of the transient receptor potential (TRP) family expressed by resident tissue cells, inflammatory and immune cells and distinct subsets of primary sensory neurons, have emerged as a novel and interrelated system to detect and respond to harmful agents. TRP channels, by means of their direct effect on the intracellular levels of cations and/or through the indirect modulation of a large series of intracellular pathways, orchestrate a range of cellular processes, such as cytokine production, cell differentiation and cytotoxicity. The contribution of TRP channels to the transition of inflammation and immune responses from a defensive early response to a chronic and pathological condition is also emerging as a possible underlying mechanism in various diseases. This review discusses the roles of TRP channels in inflammatory and immune cell function and provides an overview of the effects of inflammatory and immune TRP channels on the pathogenesis of human diseases.
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Affiliation(s)
- A Parenti
- Clinical Pharmacology and Oncology Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - F De Logu
- Clinical Pharmacology and Oncology Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - P Geppetti
- Clinical Pharmacology and Oncology Unit, Department of Health Sciences, University of Florence, Florence, Italy
| | - S Benemei
- Clinical Pharmacology and Oncology Unit, Department of Health Sciences, University of Florence, Florence, Italy
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9
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Smith PK, Hourihane JO, Lieberman P. Risk multipliers for severe food anaphylaxis. World Allergy Organ J 2015; 8:30. [PMID: 26635908 PMCID: PMC4657220 DOI: 10.1186/s40413-015-0081-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 09/25/2015] [Indexed: 12/03/2022] Open
Abstract
Anaphylaxis is a severe, life threatening allergic reaction. In most fatal cases of food anaphylaxis, the fatality is not due merely to a simple, linear relationship between the allergen and exposure in a sensitized individual. Compounding factors such as the allergic disease burden—particularly the presence of asthma; comprehension of the potential severity of an event, training in the appropriate use of epinephrine, and emerging metabolic factors should be considered when assessing risk and establishing management strategies. This paper reviews the factors that contribute to the risk of severe anaphylactic events and provides a framework for the ongoing management of patients at risk of severe food allergy.
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Affiliation(s)
| | | | - Phil Lieberman
- University of Tennessee College of Medicine, Memphis, Tennessee USA
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10
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Turnbull JL, Adams HN, Gorard DA. Review article: the diagnosis and management of food allergy and food intolerances. Aliment Pharmacol Ther 2015; 41:3-25. [PMID: 25316115 DOI: 10.1111/apt.12984] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 05/23/2014] [Accepted: 09/16/2014] [Indexed: 12/28/2022]
Abstract
BACKGROUND Adverse reactions to food include immune mediated food allergies and non-immune mediated food intolerances. Food allergies and intolerances are often confused by health professionals, patients and the public. AIM To critically review the data relating to diagnosis and management of food allergy and food intolerance in adults and children. METHODS MEDLINE, EMBASE and the Cochrane Database were searched up until May 2014, using search terms related to food allergy and intolerance. RESULTS An estimated one-fifth of the population believe that they have adverse reactions to food. Estimates of true IgE-mediated food allergy vary, but in some countries it may be as prevalent as 4-7% of preschool children. The most common food allergens are cow's milk, egg, peanut, tree nuts, soy, shellfish and finned fish. Reactions vary from urticaria to anaphylaxis and death. Tolerance for many foods including milk and egg develops with age, but is far less likely with peanut allergy. Estimates of IgE-mediated food allergy in adults are closer to 1-2%. Non-IgE-mediated food allergies such as Food Protein-Induced Enterocolitis Syndrome are rarer and predominantly recognised in childhood. Eosinophilic gastrointestinal disorders including eosinophilic oesophagitis are mixed IgE- and non-IgE-mediated food allergic conditions, and are improved by dietary exclusions. By contrast food intolerances are nonspecific, and the resultant symptoms resemble other common medically unexplained complaints, often overlapping with symptoms found in functional disorders such as irritable bowel syndrome. Improved dietary treatments for the irritable bowel syndrome have recently been described. CONCLUSIONS Food allergies are more common in children, can be life-threatening and are distinct from food intolerances. Food intolerances may pose little risk but since functional disorders are so prevalent, greater efforts to understand adverse effects of foods in functional disorders are warranted.
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Affiliation(s)
- J L Turnbull
- Department of Paediatrics, John Radcliffe Hospital, Headington, Oxford, UK
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11
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Ionotropic and metabotropic proton-sensing receptors involved in airway inflammation in allergic asthma. Mediators Inflamm 2014; 2014:712962. [PMID: 25197168 PMCID: PMC4147257 DOI: 10.1155/2014/712962] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/10/2014] [Accepted: 07/24/2014] [Indexed: 12/19/2022] Open
Abstract
An acidic microenvironment has been shown to evoke a variety of airway responses, including cough, bronchoconstriction, airway hyperresponsiveness (AHR), infiltration of inflammatory cells in the lung, and stimulation of mucus hyperproduction. Except for the participation of transient receptor potential vanilloid-1 (TRPV1) and acid-sensing ion channels (ASICs) in severe acidic pH (of less than 6.0)-induced cough and bronchoconstriction through sensory neurons, the molecular mechanisms underlying extracellular acidic pH-induced actions in the airways have not been fully understood. Recent studies have revealed that ovarian cancer G protein-coupled receptor 1 (OGR1)-family G protein-coupled receptors, which sense pH of more than 6.0, are expressed in structural cells, such as airway smooth muscle cells and epithelial cells, and in inflammatory and immune cells, such as eosinophils and dendritic cells. They function in a variety of airway responses related to the pathophysiology of inflammatory diseases, including allergic asthma. In the present review, we discuss the roles of ionotropic TRPV1 and ASICs and metabotropic OGR1-family G protein-coupled receptors in the airway inflammation and AHR in asthma and respiratory diseases.
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12
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Kaneko Y, Szallasi A. Transient receptor potential (TRP) channels: a clinical perspective. Br J Pharmacol 2014; 171:2474-507. [PMID: 24102319 PMCID: PMC4008995 DOI: 10.1111/bph.12414] [Citation(s) in RCA: 284] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/28/2013] [Accepted: 08/31/2013] [Indexed: 12/14/2022] Open
Abstract
Transient receptor potential (TRP) channels are important mediators of sensory signals with marked effects on cellular functions and signalling pathways. Indeed, mutations in genes encoding TRP channels are the cause of several inherited diseases in humans (the so-called 'TRP channelopathies') that affect the cardiovascular, renal, skeletal and nervous systems. TRP channels are also promising targets for drug discovery. The initial focus of research was on TRP channels that are expressed on nociceptive neurons. Indeed, a number of potent, small-molecule TRPV1, TRPV3 and TRPA1 antagonists have already entered clinical trials as novel analgesic agents. There has been a recent upsurge in the amount of work that expands TRP channel drug discovery efforts into new disease areas such as asthma, cancer, anxiety, cardiac hypertrophy, as well as obesity and metabolic disorders. A better understanding of TRP channel functions in health and disease should lead to the discovery of first-in-class drugs for these intractable diseases. With this review, we hope to capture the current state of this rapidly expanding and changing field.
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Affiliation(s)
- Yosuke Kaneko
- Discovery Research Alliance, Ono Pharmaceutical Co. LtdOsaka, Japan
| | - Arpad Szallasi
- Department of Pathology and Laboratory Medicine, Monmouth Medical CenterLong Branch, NJ, USA
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13
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Alam R. Exercise, our breathing, and our health. Immunol Allergy Clin North Am 2013; 33:xiii-xiv. [PMID: 23830135 DOI: 10.1016/j.iac.2013.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rafeul Alam
- Division of Allergy and Immunology, National Jewish Health, University of Colorado Denver, 1400 Jackson Street, Denver, CO 80206, USA.
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