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Ying LN, Sun Y, Cui LY, Zhang ZY, Li RF, Zhang J. Recent advances in the knowledge of the mechanism of reflux hypersensitivity. Scand J Gastroenterol 2024; 59:518-523. [PMID: 38343278 DOI: 10.1080/00365521.2024.2310177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/20/2024] [Indexed: 04/26/2024]
Abstract
Reflux hypersensitivity (RH) is a subtype of gastroesophageal reflux disease. The Rome IV criteria separated RH from the original nonerosive reflux disease subgroup and classified it as a new functional oesophageal disease. Recently, the pathogenesis of RH has become the focus of research. According to the latest research reports, upregulation of acid-sensitive receptors, distribution of calcitonin gene-related peptide-positive nerve fibres, and psychiatric comorbidity have key roles in the pathogenesis of RH. This work reviews the latest findings regarding RH mechanisms.
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Affiliation(s)
- Li Na Ying
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, P.R. China
| | - Yan Sun
- Department of Gastroenterology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, P.R. China
| | - Li Yang Cui
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, P.R. China
| | - Zhen Yu Zhang
- Graduate School of Bengbu Medical University, Bengbu, Anhui, P.R. China
| | - Rui Fang Li
- People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, P.R. China
| | - Jun Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), Hangzhou, Zhejiang, P.R. China
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2
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Ma C, Li H, Lu S, Li X, Wang S, Wang W. Tryptase and Exogenous Trypsin: Mechanisms and Ophthalmic Applications. J Inflamm Res 2023; 16:927-939. [PMID: 36891173 PMCID: PMC9987324 DOI: 10.2147/jir.s402900] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
Ocular injuries caused by inflammation, surgery or accidents are subject to a physiological healing process that ultimately restores the structure and function of the damaged tissue. Tryptase and trypsin are essential component of this process and they play a role in promoting and reducing the inflammatory response of tissues, respectively. Following injury, tryptase is endogenously produced by mast cells and can exacerbate the inflammatory response both by stimulating neutrophil secretion, and through its agonist action on proteinase-activated receptor 2 (PAR2). In contrast, exogenously introduced trypsin promotes wound healing by attenuating inflammatory responses, reducing oedema and protecting against infection. Thus, trypsin may help resolve ocular inflammatory symptoms and promote faster recovery from acute tissue injury associated with ophthalmic diseases. This article describes the roles of tryptase and exogenous trypsin in affected tissues after onset of ocular injury, and the clinical applications of trypsin injection.
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Affiliation(s)
- Chao Ma
- Department of Ophthalmology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Haoyu Li
- Department of Ophthalmology, the Second Xiangya Hospital of Central South University, Changsha, Hunan, People's Republic of China.,Hunan Clinical Research Centre of Ophthalmic Disease, Changsha, Hunan, People's Republic of China
| | - Shuwen Lu
- Department of Ophthalmology, the First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan, People's Republic of China
| | - Xian Li
- Manchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, the University of Manchester, Manchester, UK
| | - Shuai Wang
- Department of Ophthalmology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Wenzhan Wang
- Department of Ophthalmology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
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3
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Lambertini C, Zannoni A, Romagnoli N, Bombardi C, Morini M, Dondi F, Bernardini C, Forni M, Rinnovati R, Spadari A. Expression of Proteinase-Activated Receptor 2 During Colon Volvulus in the Horse. Front Vet Sci 2020; 7:589367. [PMID: 33330716 PMCID: PMC7728609 DOI: 10.3389/fvets.2020.589367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/27/2020] [Indexed: 11/16/2022] Open
Abstract
Large colon volvulus in horses is associated with a poor prognosis, especially when ischemic-reperfusion injury of the affected intestinal tract develops. Proteinase-activated receptor 2 (PAR2) plays an important role in the pathogenesis of inflammation in the gastrointestinal tract. The aim of this study was to evaluate the distribution and expression of PAR2 in colonic pelvic flexure of horses spontaneously affected by large colon volvulus (CVH group). Eight horses admitted for severe abdominal colon volvolus and which underwent surgery were included. Colon samples were collected after enterotomy. Data previously obtained from healthy horses were used as a control group. Histologic evaluation was carried out to grade the severity of the colon lesions. Immunofluorescence, western blot and quantitative polymerase chain reaction (RT-qPCR) were carried out on colon samples to evaluate PAR2 expression. In addition, the transcriptional profile of cytokines and chemokines was evaluated using RT2 Profiler™ PCR Array Horse Cytokines & Chemokines. Three out of the eight patients were euthanised due to clinical deterioration. Immunostaining for PAR2 was observed in the enterocytes, intestinal glands and neurons of the submucosal and myenteric plexi. In the CVH horses, the expression of PAR2 mesenger RNA (mRNA) did not differ significantly from that of the healthy animals; western blots of the mucosa of the colon tracts showed a clear band of the expected molecular weight for PAR2 (~44 kDa) and a band smaller than the expected molecular weight for PAR2 (25kDa), suggesting its activation. The gene expressions for C-X-C motif ligand 1 (CXCL1); interleukin 8 (IL8), macrophage inflammatory protein 2 beta (MIP-2BETA) were upregulated in the colic horses as compared with the colons of the healthy horses. Therefore, in the present study, the expression and activation of PAR2 in the colons of horses in the presence of an inflammatory reaction like that occurring in those with spontaneous colon volvulus was confirmed.
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Affiliation(s)
- Carlotta Lambertini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Augusta Zannoni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Noemi Romagnoli
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Cristiano Bombardi
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Maria Morini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Francesco Dondi
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Chiara Bernardini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Monica Forni
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Riccardo Rinnovati
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Alessandro Spadari
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
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Saqib U, Savai R, Liu D, Banerjee S, Baig MS. Drug repositioning as an effective therapy for protease-activated receptor 2 inhibition. J Cell Biochem 2019; 120:1522-1526. [PMID: 30370939 DOI: 10.1002/jcb.27334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/28/2018] [Indexed: 01/24/2023]
Abstract
Proteinase-activated receptor 2 (PAR-2) is a G protein-coupled receptor activated by both trypsin and a specific agonist peptide, SLIGKV-NH2. It has been linked to various pathologies, including pain and inflammation. Several peptide and peptidomimetic agonizts for PAR-2 have been developed exhibiting high potency and efficacy. However, the number of PAR-2 antagonists is smaller. We screened the Food and Drug Administration library of approved compounds to retrieve novel antagonists for repositioning in the PAR-2 structure. The most efficacious compound bicalutamide bound to the PAR-2 binding groove near the extracellular domain as observed in the in silico studies. Further, it showed reduced Ca2+ release in trypsin activated cells in a dose-dependent manner. Hence, bicalutamide is a novel and potent PAR-2 antagonist which could be therapeutically useful in blocking multiple pathways diverging from PAR-2 signaling. Further, the novel scaffold of bicalutamide represents a new molecular structure for PAR-2 antagonism and can serve as a basis for further drug development.
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Affiliation(s)
- Uzma Saqib
- Discipline of Chemistry, Indian Institute of Technology Indore (IITI), Indore, India
| | - Rajkumar Savai
- Department of Lung Development and Remodeling, Member of the German Center for Lung Research (DZL), Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - DongFang Liu
- Center for Inflammation & Epigenetics, Houston Methodist Research Institute, Houston, Texas.,Department of Microbiology and Immunology, Weill Cornell Medical College, Cornell University, New York
| | - Sreeparna Banerjee
- Department of Biological Sciences, Orta Doğu Teknik Üniversitesi (ODTU/METU), Ankara, Turkey
| | - Mirza S Baig
- Discipline of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Indore, India
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Stein J, Stahn S, Neudörfl JM, Sperlich J, Schmalz HG, Teusch N. Synthetic Indolactam V Analogues as Inhibitors of PAR2-Induced Calcium Mobilization in Triple-Negative Breast Cancer Cells. ChemMedChem 2018; 13:147-154. [PMID: 29195005 DOI: 10.1002/cmdc.201700640] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 11/30/2017] [Indexed: 02/03/2023]
Abstract
Human proteinase-activated receptor 2 (PAR2), a transmembrane G-protein-coupled receptor (GPCR), is an attractive target for a novel anticancer therapy, as it plays a critical role in cell migration and invasion. Selective PAR2 inhibitors therefore have potential as anti-metastatic drugs. Knowing that the natural product teleocidin A2 is able to inhibit PAR2 in tumor cells, the goal of the present study was to elaborate structure-activity relationships and to identify potent PAR2 inhibitors with lower activity against the adverse target, protein kinase C (PKC). For this purpose, an efficient gram-scale total synthesis of indolactam V (i.e., the parent structure of all teleocidins) was developed, and a library of derivatives was prepared. Some compounds were indeed found to exhibit high potency as PAR2 inhibitors at low nanomolar concentrations with improved selectivity (relative to teleocidin A2). The pseudopeptidic fragment bridging the C3 and C4 positions of the indole core proved to be essential for target binding, whereas activity and target selectivity depends on the substituents at N1 or C7. This study revealed novel derivatives that show high efficacy in PAR2 antagonism combined with increased selectivity.
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Affiliation(s)
- Jan Stein
- University of Cologne, Department of Chemistry, Greinstrasse 4, 50939, Köln, Germany
| | - Sonja Stahn
- Technische Hochschule Köln, Bio-Pharmaceutical Chemistry & Molecular Pharmacology, Faculty of Applied Natural Sciences, Kaiser-Wilhelm-Allee, G. E39, 51373, Leverkusen, Germany
| | - Jörg-M Neudörfl
- University of Cologne, Department of Chemistry, Greinstrasse 4, 50939, Köln, Germany
| | - Julia Sperlich
- Technische Hochschule Köln, Bio-Pharmaceutical Chemistry & Molecular Pharmacology, Faculty of Applied Natural Sciences, Kaiser-Wilhelm-Allee, G. E39, 51373, Leverkusen, Germany
| | - Hans-Günther Schmalz
- University of Cologne, Department of Chemistry, Greinstrasse 4, 50939, Köln, Germany
| | - Nicole Teusch
- Technische Hochschule Köln, Bio-Pharmaceutical Chemistry & Molecular Pharmacology, Faculty of Applied Natural Sciences, Kaiser-Wilhelm-Allee, G. E39, 51373, Leverkusen, Germany
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Asaduzzaman M, Nadeem A, Arizmendi N, Davidson C, Nichols HL, Abel M, Ionescu LI, Puttagunta L, Thebaud B, Gordon J, DeFea K, Hollenberg MD, Vliagoftis H. Functional inhibition of PAR2 alleviates allergen-induced airway hyperresponsiveness and inflammation. Clin Exp Allergy 2016; 45:1844-55. [PMID: 26312432 DOI: 10.1111/cea.12628] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 05/28/2015] [Accepted: 06/07/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND Proteinase-activated receptor 2 (PAR2 ) is a G protein-coupled receptor activated by trypsin-like serine proteinases. PAR2 activation has been associated with inflammation including allergic airway inflammation. We have also shown that PAR2 activation in the airways leads to allergic sensitization. The exact contribution of PAR2 in the development of eosinophilic inflammation and airway hyperresponsiveness (AHR) in sensitized individuals is not clear. OBJECTIVE To investigate whether functional inhibition of PAR2 during allergen challenge of allergic mice would inhibit allergen-induced AHR and inflammation in mouse models of asthma. METHODS Mice were sensitized and challenged with ovalbumin (OVA) or cockroach extract (CE). To investigate the role of PAR2 in the development of AHR and airway inflammation, we administered blocking anti-PAR2 antibodies, or a cell permeable peptide inhibitor of PAR2 signalling, pepducin, i.n. before allergen challenges and then assessed AHR and airway inflammation. RESULTS Administration of anti-PAR2 antibodies significantly inhibited OVA- and CE-induced AHR and airway inflammation. In particular, two anti-PAR2 antibodies, the monoclonal SAM-11 and polyclonal B5, inhibited AHR, airway eosinophilia, the increase of cytokines in the lung tissue and antigen-specific T cell proliferation, but had no effect on antigen-specific IgG and IgE levels. Pepducin was also effective in inhibiting AHR and airway inflammation in an OVA model of allergic airway inflammation. CONCLUSIONS AND CLINICAL RELEVANCE Functional blockade of PAR2 in the airways during allergen challenge improves allergen-induced AHR and inflammation in mice. Therefore, topical PAR2 blockade in the airways, through anti-PAR2 antibodies or molecules that interrupt PAR2 signalling, has the potential to be used as a therapeutic option in allergic asthma.
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Affiliation(s)
- M Asaduzzaman
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - A Nadeem
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - N Arizmendi
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - C Davidson
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - H L Nichols
- Division of Biomedical Sciences and Cell, Molecular and Developmental Biology, University of California, Riverside, CA, USA
| | - M Abel
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - L I Ionescu
- Department of Physiology, Women and Children Health Research Institute, University of Alberta, Edmonton, AB, Canada
| | - L Puttagunta
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
| | - B Thebaud
- Department of Physiology, Women and Children Health Research Institute, University of Alberta, Edmonton, AB, Canada
| | - J Gordon
- Immunology Research Group, University of Saskatchewan, Saskatoon, SK, Canada
| | - K DeFea
- Division of Biomedical Sciences and Cell, Molecular and Developmental Biology, University of California, Riverside, CA, USA
| | - M D Hollenberg
- Department of Pharmacology and Therapeutics, University of Calgary, Calgary, AB, Canada
| | - H Vliagoftis
- Pulmonary Research Group, Department of Medicine, University of Alberta, Edmonton, AB, Canada
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Kim JJ, Kim N, Choi YJ, Kim JS, Jung HC. Increased TRPV1 and PAR2 mRNA expression levels are associated only with the esophageal reflux symptoms, but not with the extraesophageal reflux symptoms. Medicine (Baltimore) 2016; 95:e4387. [PMID: 27512850 PMCID: PMC4985305 DOI: 10.1097/md.0000000000004387] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Transient receptor potential vanilloid-1 (TRPV1) receptor and proteinase-activated receptor 2 (PAR2) have been implicated in the mechanism of acid-induced inflammation in gastroesophageal reflux disease (GERD). We aimed to evaluate TRPV1 and PAR2 mRNA expression levels in the GERD patients and their relationship with endoscopic findings and reflux symptoms.Sixteen healthy controls, 45 patients with erosive reflux disease (ERD), and 14 nonerosive reflux disease (NERD) patients received endoscopy and completed questionnaires. Quantitative real-time polymerase chain reactions (qPCR) of TRPV1, glial cell line-derived neurotrophic factor (GDNF), nerve growth factor (NGF), PAR2, and interleukin (IL)-8 were performed in the distal esophagus specimen.The levels of TRPV1, GDNF, NGF, PAR2, and IL-8 mRNA expression were highest in the ERD group followed by NERD and control groups and the differences between control and ERD groups were statistically significant. Within the ERD group, patients with grade B in Los Angeles (LA) classification showed significantly higher levels of TRPV1, GDNF, and NGF mRNA expression than those with grade A. Presence of reflux symptoms was associated with significant higher levels of TRPV1, PAR2, and IL-8. Notably not extraesophageal but esophageal reflux symptoms were significantly associated with them.Upregulation of TRPV1 and PAR2 pathways might play a role in the development of distal esophageal inflammation and reflux symptoms. And extraesophageal reflux symptoms might not be associated with these processes.
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Affiliation(s)
- Jin Joo Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul
- Department of Internal Medicient, Changwon Gyeongsang National University Hospital, Changwon, Gyeongnam
| | - Nayoung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Republic of Korea
| | - Yoon Jin Choi
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Republic of Korea
| | - Joo Sung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul
| | - Hyun Chae Jung
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul
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Andoh T, Tsujii K, Kuraishi Y. Increase in pruritogenic kallikrein 5 in the skin of NC mice with chronic dermatitis. Exp Dermatol 2015; 24:978-80. [PMID: 26268952 DOI: 10.1111/exd.12828] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Tsugunobu Andoh
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Kenichiro Tsujii
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yasushi Kuraishi
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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Yang L, Ma Y, Han W, Li W, Cui L, Zhao X, Tian Y, Zhou Z, Wang W, Wang H. Proteinase-activated receptor 2 promotes cancer cell migration through RNA methylation-mediated repression of miR-125b. J Biol Chem 2015; 290:26627-37. [PMID: 26354435 DOI: 10.1074/jbc.m115.667717] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Indexed: 01/08/2023] Open
Abstract
Proteinase activated-receptor 2 (PAR2) participates in cancer metastasis promoted by serine proteinases. The current study aimed to test the molecular mechanism by which PAR2 promotes cancer cell migration. In different cancer cells, activation of PAR2 by activating peptide (PAR2-AP) dramatically increased cell migration, whereas knock down of PAR2 inhibited cellular motility. The PAR2 activation also repressed miR-125b expression while miR-125b mimic successfully blocked PAR2-induced cell migration. Moreover, Grb associated-binding protein 2 (Gab2) was identified as a novel target gene of miR-125b and it mediated PAR2-induced cell migration. The correlation of PAR2 with miR-125b and Gab2 was further supported by the findings obtained from human colorectal carcinoma specimens. Remarkably, knock down of NOP2/Sun domain family, member 2 (NSun2), a RNA methyltransferase, blocked the reduction in miR-125b induced by PAR2. Furthermore, PAR2 activation increased the level of N(6)-methyladenosine (m(6)A)-containing pre-miR-125b in NSun2-dependent manner. Taken together, our results demonstrated that miR-125b mediates PAR2-induced cancer cell migration by targeting Gab2 and that NSun2-dependent RNA methylation contributes to the down-regulation of miR-125b by PAR2 signaling. These findings suggest a novel epigenetic mechanism by which microenvironment regulates cancer cell migration by altering miRNA expression.
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Affiliation(s)
- Lan Yang
- From the State Key Laboratory of Molecular Oncology
| | - Yiming Ma
- From the State Key Laboratory of Molecular Oncology
| | - Wenxiao Han
- From the State Key Laboratory of Molecular Oncology
| | - Weiwei Li
- From the State Key Laboratory of Molecular Oncology
| | - Liang Cui
- Department of Abdominal Surgical Oncology, and
| | - Xinhua Zhao
- From the State Key Laboratory of Molecular Oncology
| | - Yantao Tian
- Department of Abdominal Surgical Oncology, and
| | - Zhixiang Zhou
- Department of Gastrointestinal Surgical Oncology, Cancer Institute/Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, 100021 Beijing, PR China and
| | - Wengong Wang
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, 100191 Beijing, PR China
| | - Hongying Wang
- From the State Key Laboratory of Molecular Oncology,
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McNulty AL, Leddy HA, Liedtke W, Guilak F. TRPV4 as a therapeutic target for joint diseases. Naunyn Schmiedebergs Arch Pharmacol 2015; 388:437-50. [PMID: 25519495 PMCID: PMC4361386 DOI: 10.1007/s00210-014-1078-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/04/2014] [Indexed: 02/07/2023]
Abstract
Biomechanical factors play a critical role in regulating the physiology as well as the pathology of multiple joint tissues and have been implicated in the pathogenesis of osteoarthritis. Therefore, the mechanisms by which cells sense and respond to mechanical signals may provide novel targets for the development of disease-modifying osteoarthritis drugs (DMOADs). Transient receptor potential vanilloid 4 (TRPV4) is a Ca(2+)-permeable cation channel that serves as a sensor of mechanical or osmotic signals in several musculoskeletal tissues, including cartilage, bone, and synovium. The importance of TRPV4 in joint homeostasis is apparent in patients harboring TRPV4 mutations, which result in the development of a spectrum of skeletal dysplasias and arthropathies. In addition, the genetic knockout of Trpv4 results in the development of osteoarthritis and decreased osteoclast function. In engineered cartilage replacements, chemical activation of TRPV4 can reproduce many of the anabolic effects of mechanical loading to accelerate tissue growth and regeneration. Overall, TRPV4 plays a key role in transducing mechanical, pain, and inflammatory signals within joint tissues and thus is an attractive therapeutic target to modulate the effects of joint diseases. In pathological conditions in the joint, when the delicate balance of TRPV4 activity is altered, a variety of different tools could be utilized to directly or indirectly target TRPV4 activity.
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Affiliation(s)
- Amy L. McNulty
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
| | - Holly A. Leddy
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
| | - Wolfgang Liedtke
- Department of Neurology and Duke University Clinics for Pain and Palliative Care, Duke University Medical Center, Durham, NC 27710
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710
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Gul Utku O, Akbay Karatay E, Erdal H, Arhan M, Onal IK, Ibis M, Ekinci O, Yilmaz Demirtas C, Unal S. Rivaroxaban Induces Mucosal Healing in a Rat Model of Trinitrobenzene Sulfonic Acid-Induced Colitis. Med Princ Pract 2015; 24:470-6. [PMID: 26111863 PMCID: PMC5588261 DOI: 10.1159/000431361] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 05/13/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE This study was designed to identify the effect of rivaroxaban, a direct factor Xa inhibitor, on trinitrobenzene sulfonic acid (TNBS)-induced colitis in rats. MATERIALS AND METHODS Twenty-four female Wistar rats were divided into 4 groups of 6 each. Group 1 received TNBS + rivaroxaban, group 2 received TNBS + methylprednisolone, group 3 received TNBS and group 4 received a saline enema. Colitis was induced in the rats by the intracolonic administration of TNBS. Rivaroxaban and methylprednisolone were given by oral gavage daily for 7 days. The rats were killed 7 days after the induction of colitis. RESULTS Rivaroxaban and methylprednisolone significantly reduced gross damage and histopathological scores. Rivaroxaban was more effective than methylprednisolone in terms of microscopic mucosal healing. Rivaroxaban attenuated the accumulation of malonyldialdehyde (MDA) and transforming growth-factor β1 (TGF-β1) and the activities of myeloperoxidase (MPO), matrix metalloproteinase-3 and tissue inhibitor of metalloproteinases-1. Methylprednisolone reduced only the activity of MPO and the accumulation of MDA and TGF-β1. Superoxide dismutase activity showed a restoration to normal levels after rivaroxaban and methylprednisolone administration. CONCLUSIONS Rivaroxaban showed a therapeutic effect in the TNBS model of experimental colitis, and it seemed to be at least as effective as methylprednisolone. This effect may be brought about by the inhibition of oxidative stress and metalloproteinase activity associated with tissue injury and remodeling.
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Affiliation(s)
- Ozlem Gul Utku
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
| | - Eylem Akbay Karatay
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
| | - Harun Erdal
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
| | - Mehmet Arhan
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
| | - Ibrahim Koral Onal
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
- *Ibrahim Koral Onal, MD, Cukurambar Mah 1465, Sok 42. Cad 10/14, Balgat, TR-06510 Çankaya, Ankara (Turkey), E-Mail
| | - Mehmet Ibis
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
| | - Ozgur Ekinci
- Department of Pathology, Gazi University Medical School, Ankara, Turkey
| | | | - Selahattin Unal
- Department of Gastroenterology, Gazi University Medical School, Ankara, Turkey
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Seo JH, Seo JY, Chung HY, Kim H. Effect of pertussis toxin and herbimycin A on proteinase-activated receptor 2-mediated cyclooxygenase 2 expression in Helicobacter pylori-infected gastric epithelial AGS cells. Yonsei Med J 2011; 52:522-6. [PMID: 21488197 PMCID: PMC3101059 DOI: 10.3349/ymj.2011.52.3.522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Helicobacter pylori (H. pylori) is an important risk factor for chronic gastritis, peptic ulcer, and gastric cancer. Proteinase-activated receptor 2 (PAR2), subgroup of G-protein coupled receptor family, is highly expressed in gastric cancer, and chronic expression of cyclooxygenase-2 (COX-2) plays an important role in H. pylori-associated gastric carcinogenesis and inflammation. We previously demonstrated that H. pylori induced the expression of PAR2 and COX-2 in gastric epithelial cells. Present study aims to investigate whether COX-2 expression induced by H. pylori in Korean isolates is mediated by PAR2 via activation of G(i) protein and Src kinase in gastric epithelial AGS cells. Results showed that H. pylori-induced COX-2 expression was inhibited in the cells transfected with antisense oligonucleotide for PAR2 or treated with Gi protein blocker pertussis toxin, Src kinase inhibitor herbimycin A and soybean trypsin inbitor, indicating that COX-2 expression is mediated by PAR2 through activation of Gi protein and Src kinase in gastric epithelial cells infected with H. pylori in Korean isolates. Thus, targeting the activation of PAR2 may be beneficial for prevention or treatment of gastric inflammation and carcinogenesis associated with H. pylori infection.
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Affiliation(s)
- Ji Hye Seo
- Department Pharmacology, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.
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McIntosh K, Cunningham MR, Cadalbert L, Lockhart J, Boyd G, Ferrell W, Plevin R. Proteinase-activated receptor-2 mediated inhibition of TNFalpha-stimulated JNK activation - A novel paradigm for G(q/11) linked GPCRs. Cell Signal 2010; 22:265-73. [PMID: 19781631 PMCID: PMC2806525 DOI: 10.1016/j.cellsig.2009.09.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2009] [Accepted: 09/14/2009] [Indexed: 12/14/2022]
Abstract
In this study we examined the potential for PAR(2) and TNFalpha to synergise at the level of MAP kinase signalling in PAR(2) expressing NCTC2544 cells. However, to our surprise we found that activation of PAR(2) by trypsin or the specific activating peptide SLIGKV-OH strongly inhibited both the phosphorylation and activity of JNK. In contrast neither p38 MAP kinase nor ERK activation was affected although TNFalpha stimulated IkappaBalpha loss was partially reversed. The inhibitory effect was not observed in parental cells nor in cells expressing PAR(4), however inhibition was reversed by pre-incubation with the novel PAR(2) antagonist K14585, suggesting that the effect is specific for PAR(2) activation. SLIGKV-OH was found to be more potent in inhibiting TNFalpha-induced JNK activation than in stimulating JNK alone, suggesting agonist-directed signalling. The PKC activator PMA, also mimicked the inhibitory effect of SLIGKV-OH, and the effects of both agents were reversed by pre-treatment with the PKC inhibitor, GF109203X. Furthermore, incubation with the novel G(q/11) inhibitor YM25480 also reversed PAR(2) mediated inhibition. Activation of PAR(2) was found to disrupt TNFR1 binding to RIP and TRADD and this was reversed by both GF109203X and YM25480. A similar mode of inhibition observed in HUVECs through PAR(2) or P2Y2 receptors demonstrates the potential of a novel paradigm for GPCRs linked to G(q/11), in mediating inhibition of TNFalpha-stimulated JNK activation. This has important implications in assessing the role of GPCRs in inflammation and other conditions.
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Key Words
- par-2, proteinase-activated receptor-2
- par-2 ap, par-2 activating peptide
- 2f-ligkv-oh, 2-furoyl-ligkv-hydroxyl
- jnk, c-jun n-terminal protein kinase
- nfκb, nuclear factor kappa b
- pkc, protein kinase c
- map kinase, mitogen-activated protein kinase
- pma, phorbol 12-myristate 13-acetate
- tnfα, tumour necrosis factor-alpha, tnfr1, tnf-receptor-1
- gpcr, g-protein-coupled receptors
- rip, receptor interacting protein
- tradd, tnf receptor activated death domain
- traf, tnf receptor activating factor
- nhek, normal human epithelial keratinocytes
- gf109203x, 3-[1-[3-(dimethylamino)propyl]-1h-indol-3-yl]-4-(1h-indol-3-yl)-1h-pyrrole-2,5-dione monohydrochloride
- fadd, fas-associated death domain
- madd, map kinase activating death domain protein
- il-6, interleukin-6
- proteinase-activated receptor 2
- c-jun n-terminal protein kinase
- tnfα
- protein kinase c
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Affiliation(s)
- Kathryn McIntosh
- Department of Physiology and Pharmacology, University of Strathclyde, Strathclyde Institute for Pharmacy and Biomedical Sciences, 27 Taylor Street, Glasgow, G4 0NR, Scotland, UK
- School of Engineering and Science, University of The West of Scotland, Paisley PA1 2BE, UK
| | - Margaret R. Cunningham
- Department of Physiology and Pharmacology, University of Strathclyde, Strathclyde Institute for Pharmacy and Biomedical Sciences, 27 Taylor Street, Glasgow, G4 0NR, Scotland, UK
| | - Laurence Cadalbert
- Department of Physiology and Pharmacology, University of Strathclyde, Strathclyde Institute for Pharmacy and Biomedical Sciences, 27 Taylor Street, Glasgow, G4 0NR, Scotland, UK
| | - John Lockhart
- School of Engineering and Science, University of The West of Scotland, Paisley PA1 2BE, UK
| | - Gary Boyd
- School of Engineering and Science, University of The West of Scotland, Paisley PA1 2BE, UK
| | - W.R. Ferrell
- Centre for Rheumatic Disease, Royal Infirmary, Glasgow G31 2ER, UK
| | - Robin Plevin
- Department of Physiology and Pharmacology, University of Strathclyde, Strathclyde Institute for Pharmacy and Biomedical Sciences, 27 Taylor Street, Glasgow, G4 0NR, Scotland, UK
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Nhu QM, Shirey K, Teijaro JR, Farber DL, Netzel-Arnett S, Antalis TM, Fasano A, Vogel SN. Novel signaling interactions between proteinase-activated receptor 2 and Toll-like receptors in vitro and in vivo. Mucosal Immunol 2010; 3:29-39. [PMID: 19865078 DOI: 10.1038/mi.2009.120] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Toll-like receptors (TLRs) and proteinase-activated receptors (PARs) function as innate immune biosensors in mucosal epithelial cells (ECs). We previously reported the functional and physical interactions between TLR4 and PAR(2). We have extended these findings herein by showing the cooperation between PAR(2) and TLR2, TLR3, or TLR4 for activation of nuclear factor-kappaB-dependent signaling in mucosal EC lines. In contrast, activation of PAR(2) negatively regulated TLR3-dependent antiviral pathway, blunting the expression of TLR3/interferon regulatory factor-3 (IRF-3)-driven genes, as well as activation of IRF-3 and STAT1. Consistent with these in vitro observations, PAR(2)(-/-) and TLR4(-/-) mice, which were refractory to footpad edema induced by PAR(2) agonist peptide, were protected from mouse-adapted H1N1 influenza A virus-induced lethality when compared to wild-type (WT) mice. These data support and extend our recently described, novel model of PAR(2)-TLR4 "receptor cooperativity" and highlight the complexity of signaling integration between heterologous innate immune biosensors.
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McGuire JJ, Hollenberg MD, Andrade-Gordon P, Triggle CR. Multiple mechanisms of vascular smooth muscle relaxation by the activation of proteinase-activated receptor 2 in mouse mesenteric arterioles. Br J Pharmacol 2002; 135:155-69. [PMID: 11786491 PMCID: PMC1573127 DOI: 10.1038/sj.bjp.0704469] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
1. Activation of PAR2 in second-order mesenteric arteriole (MA) rings from C57BL/6J, NOS3 (-/-) and PAR2 (-/-) mice was assessed for the contributions of NO, cyclo-oxygenases, guanylyl cyclase, adenylyl cyclase, and of K(+) channel activation to vascular smooth muscle relaxation. 2. PAR2 agonist, SLIGRL-NH(2) (0.1 to 30 microM), induced relaxation of cirazoline-precontracted MA from C57BL/6J and NOS3 (-/-), but not PAR2 (-/-) mice. Maximal relaxation (E(max)) was partially reduced by a combination of L-(G)N-nitroarginine methyl ester (L-NAME), 1H-[1,2,4]-oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) and indomethacin. An ODQ/L-NAME/indomethacin resistant relaxation was also caused by trypsin (30 nM) in PAR2 (+/+), but not in PAR2 (-/-) mice. Relaxation was endothelium-dependent and inhibited by either 30 mM KCl-precontraction, or pretreatment with apamin, charybdotoxin, and their combination; iberiotoxin did not substitute for charybdotoxin nor did scyllatoxin substitute fully for apamin. 3. Tetraethylammonium (TEA), glibenclamide, tetrodotoxin, 17-octadecynoic acid, carboxy-2-phenyl-4,4,5,5,-tetramethyl-imidazoline-1-oxyl-3-oxide, SQ22536, carbenoxolone, arachidonyl trifluoromethyl ketone, 7-nitroindazole, N-(3-(aminomethyl)benzyl)acetamidine (1400W), N-(2-cyclohexyloxy-4-nitrophenyl)-methanesulfonamide (NS-398) and propanolol did not inhibit relaxation. 4-aminopyridine significantly increased the potency of SLIGRL-NH(2). A combination of 30 microM BaCl(2) and 10 microM ouabain significantly reduced the potency for relaxation, and in the presence of L-NAME, ODQ and indomethacin, E(max) was reduced. 4. We conclude PAR2-mediated relaxation of mouse MA utilizes multiple mechanisms that are both NO-cGMP-dependent, and -independent. The data are also consistent with a role for endothelium-dependent hyperpolarization of vascular smooth muscle that involves the activation of an apamin/charybdotoxin-sensitive K(+) channel(s) and, in part, may be mediated by K(+).
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MESH Headings
- Acetylcholine/pharmacology
- Animals
- Biological Factors/pharmacology
- Cyclic GMP/physiology
- Cyclooxygenase Inhibitors/metabolism
- Dose-Response Relationship, Drug
- Endothelium, Vascular/physiology
- Guanylate Cyclase
- Male
- Membrane Potentials/drug effects
- Mesenteric Arteries/drug effects
- Mesenteric Arteries/physiology
- Mice
- Mice, Inbred C57BL
- Muscle Relaxation/drug effects
- Muscle Relaxation/physiology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- NG-Nitroarginine Methyl Ester/pharmacology
- Nitric Oxide/physiology
- Nitric Oxide Donors/pharmacology
- Nitric Oxide Synthase/antagonists & inhibitors
- Nitric Oxide Synthase Type II
- Nitric Oxide Synthase Type III
- Oligopeptides/metabolism
- Potassium/pharmacology
- Potassium Channel Blockers/pharmacology
- Receptor, PAR-2
- Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors
- Receptors, Thrombin/metabolism
- Soluble Guanylyl Cyclase
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Affiliation(s)
- John J McGuire
- Smooth Muscle Research Group, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, Canada T2N 4N1.
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Hoogerwerf WA, Zou L, Shenoy M, Sun D, Micci MA, Lee-Hellmich H, Xiao SY, Winston JH, Pasricha PJ. The proteinase-activated receptor 2 is involved in nociception. J Neurosci 2001; 21:9036-42. [PMID: 11698614 PMCID: PMC6762290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
The proteinase-activated receptor 2 is expressed on a subset of primary afferent neurons and may participate in the neurogenic component of inflammation. We hypothesized that this receptor may also play a role in neuronal sensitization and contribute to the pathogenesis of pain in inflammatory conditions such as pancreatitis. Using a specific proteinase-activated receptor 2 activating peptide, we found evidence of such sensitization in vitro in the form of enhanced capsaicin- and KCl-evoked release of calcitonin gene-related peptide, a marker for nociceptive signaling. We then demonstrated that injection of the proteinase-activated receptor 2 activating peptide into the pancreatic duct can activate and sensitize pancreas-specific afferent neurons in vivo, as measured by Fos expression in the dorsal horn of the spinal cord. These observations suggest that proteinase-activated receptor 2 contributes to nociceptive signaling and may provide a novel link between inflammation and pain.
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MESH Headings
- Animals
- Calcitonin Gene-Related Peptide/metabolism
- Capsaicin
- Cells, Cultured
- Drug Administration Routes
- Ganglia, Spinal/cytology
- Ganglia, Spinal/drug effects
- Ganglia, Spinal/metabolism
- Male
- Neurons, Afferent/drug effects
- Neurons, Afferent/metabolism
- Pain/chemically induced
- Pain/physiopathology
- Pain Measurement
- Pancreas/cytology
- Pancreas/drug effects
- Pancreas/innervation
- Pancreatic Ducts/drug effects
- Posterior Horn Cells/metabolism
- Potassium Chloride
- Proto-Oncogene Proteins c-fos/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptor, PAR-2
- Receptors, Thrombin/administration & dosage
- Receptors, Thrombin/agonists
- Receptors, Thrombin/metabolism
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Affiliation(s)
- W A Hoogerwerf
- Enteric Neuromuscular Disorders and Pain Laboratory, University of Texas Medical Branch, Galveston, Texas 77555-0764, USA
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