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Warren G, Osborn M, Tsantoulas C, David-Pereira A, Cohn D, Duffy P, Ruston L, Johnson C, Bradshaw H, Kaczocha M, Ojima I, Yates A, O'Sullivan SE. Discovery and Preclinical Evaluation of a Novel Inhibitor of FABP5, ART26.12, Effective in Oxaliplatin-Induced Peripheral Neuropathy. THE JOURNAL OF PAIN 2024; 25:104470. [PMID: 38232863 DOI: 10.1016/j.jpain.2024.01.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
Oxaliplatin-induced peripheral neuropathy (OIPN) is a dose-limiting toxicity characterised by mechanical allodynia and thermal hyperalgesia, without any licensed medications. ART26.12 is a fatty acid-binding protein (FABP) 5 inhibitor with antinociceptive properties, characterised here for the prevention and treatment of OIPN. ART26.12 binds selectively to FABP5 compared to FABP3, FABP4, and FABP7, with minimal off-target liabilities, high oral bioavailability, and a NOAEL of 1,000 mg/kg/day in rats and dogs. In an established preclinical OIPN model, acute oral dosing (25-100 mg/kg) showed a cannabinoid receptor type 1 (CB1)-dependent anti-allodynic effect lasting up to 8 hours (persisting longer than plasma exposure to ART26.12). Antagonists of cannabinoid receptor type 2 (CB2), peroxisome proliferator-activated receptor alpha, and transient receptor potential cation channel subfamily V member 1 (TRPV1) may have also been implicated. Twice daily oral dosing (25 mg/kg bis in die (BID) for 7 days) showed anti-allodynic effects in an established OIPN model without the development of tolerance. In a prevention paradigm, coadministration of ART26.12 (10 and 25 mg/kg BID for 15 days) with oxaliplatin prevented thermal hyperalgesia, mitigated mechanical allodynia, and attenuated OXA-induced weight loss. Multi-scale analyses revealed widespread lipid modulation, particularly among N-acyl amino acids in the spinal cord, including potential analgesic mediators. Additionally, ART26.12 administration led to upregulation of ion channels in the periaqueductal grey, and broad translational upregulation within the plasma proteome. These results show promise that ART26.12 is a safe and well-tolerated candidate for the treatment and prevention of OIPN through lipid modulation. PERSPECTIVE: Inhibition of fatty acid-binding protein 5 (FABP5) is a novel target for reducing pain associated with chemotherapy. ART26.12 is a safe and well-tolerated small molecule FABP5 inhibitor effective at preventing and reducing pain induced with oxaliplatin through lipid modulation and activation of cannabinoid receptors.
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Affiliation(s)
| | | | | | | | | | | | | | - Clare Johnson
- Department of Psychological and Brain Sciences, Bloomington, Indiana
| | - Heather Bradshaw
- Department of Psychological and Brain Sciences, Bloomington, Indiana
| | - Martin Kaczocha
- Department of Anesthesiology, Stony Brook University, New York; Institute of Chemical Biology and Drug Discovery, Stony Brook University, New York
| | - Iwao Ojima
- Department of Chemistry, Stony Brook University, New York; Institute of Chemical Biology and Drug Discovery, Stony Brook University, New York
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2
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Spicarova D, Nerandzic V, Muzik D, Pontearso M, Bhattacharyya A, Nagy I, Palecek J. Inhibition of synaptic transmission by anandamide precursor 20:4-NAPE is mediated by TRPV1 receptors under inflammatory conditions. Front Mol Neurosci 2023; 16:1188503. [PMID: 37426071 PMCID: PMC10325575 DOI: 10.3389/fnmol.2023.1188503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/24/2023] [Indexed: 07/11/2023] Open
Abstract
Transient receptor potential ion channel, vanilloid subfamily, type 1 (TRPV1) cation channel, and cannabinoid receptor 1 (CB1) are essential in the modulation of nociceptive signaling in the spinal cord dorsal horn that underlies different pathological pain states. TRPV1 and CB1 receptors share the endogenous agonist anandamide (AEA), produced from N-arachidonoylphosphatidylethanolamine (20:4-NAPE). We investigated the effect of the anandamide precursor 20:4-NAPE on synaptic activity in naive and inflammatory conditions. Patch-clamp recordings of miniature excitatory postsynaptic currents (mEPSCs) from superficial dorsal horn neurons in rat acute spinal cord slices were used. Peripheral inflammation was induced by subcutaneous injection of carrageenan. Under naive conditions, mEPSCs frequency (0.96 ± 0.11 Hz) was significantly decreased after 20 μM 20:4-NAPE application (55.3 ± 7.4%). This 20:4-NAPE-induced inhibition was blocked by anandamide-synthesizing enzyme N-acyl phosphatidylethanolamine phospholipase D (NAPE-PLD) inhibitor LEI-401. In addition, the inhibition was prevented by the CB1 receptor antagonist PF 514273 (0.2 μM) but not by the TRPV1 receptor antagonist SB 366791 (10 μM). Under inflammatory conditions, 20:4-NAPE (20 μM) also exhibited a significant inhibitory effect (74.5 ± 8.9%) on the mEPSCs frequency that was prevented by the TRPV1 receptor antagonist SB 366791 but not by PF 514273 application. Our results show that 20:4-NAPE application has a significant modulatory effect on spinal cord nociceptive signaling that is mediated by both TRPV1 and CB1 presynaptic receptors, whereas peripheral inflammation changes the underlying mechanism. The switch between TRPV1 and CB1 receptor activation by the AEA precursor 20:4-NAPE during inflammation may play an important role in nociceptive processing, hence the development of pathological pain.
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Affiliation(s)
- Diana Spicarova
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Vladimir Nerandzic
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - David Muzik
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Monica Pontearso
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Anirban Bhattacharyya
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Istvan Nagy
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Faculty of Medicine, Chelsea and Westminster Hospital, London, United Kingdom
- Department of Physiology, University of Debrecen, Debrecen, Hungary
| | - Jiri Palecek
- Laboratory of Pain Research, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
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3
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Friston DA, Cuddihy J, Souza Luiz J, Truong AH, Ho L, Basra M, Santha P, Oszlacs O, de Sousa Valente J, Marczylo T, Junttila S, Laycock H, Collins D, Vizcaychipi M, Gyenesei A, Takats Z, Jancso G, Want E, Nagy I. Elevated 18:0 lysophosphatidylcholine contributes to the development of pain in tissue injury. Pain 2023; 164:e103-e115. [PMID: 36638307 PMCID: PMC9833116 DOI: 10.1097/j.pain.0000000000002709] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/18/2022] [Accepted: 05/27/2022] [Indexed: 02/06/2023]
Abstract
ABSTRACT Tissue injuries, including burns, are major causes of death and morbidity worldwide. These injuries result in the release of intracellular molecules and subsequent inflammatory reactions, changing the tissues' chemical milieu and leading to the development of persistent pain through activating pain-sensing primary sensory neurons. However, the majority of pain-inducing agents in injured tissues are unknown. Here, we report that, amongst other important metabolite changes, lysophosphatidylcholines (LPCs) including 18:0 LPC exhibit significant and consistent local burn injury-induced changes in concentration. 18:0 LPC induces immediate pain and the development of hypersensitivities to mechanical and heat stimuli through molecules including the transient receptor potential ion channel, vanilloid subfamily, member 1, and member 2 at least partly via increasing lateral pressure in the membrane. As levels of LPCs including 18:0 LPC increase in other tissue injuries, our data reveal a novel role for these lipids in injury-associated pain. These findings have high potential to improve patient care.
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Affiliation(s)
- Dominic Anthony Friston
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Joshua Cuddihy
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
- Department of Anaesthetics, Chelsea and Westminster NHS Trust, London, United Kingdom
| | - Jessica Souza Luiz
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - An Hoai Truong
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Laptin Ho
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Meirvaan Basra
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Peter Santha
- Department of Physiology, University of Szeged, Szeged, Hungary
| | - Orsolya Oszlacs
- Department of Physiology, University of Szeged, Szeged, Hungary
| | - Joao de Sousa Valente
- Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Research, BHF Cardiovascular Centre of Research Excellence, King's College London, London, United Kingdom
| | - Tim Marczylo
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards, Didcot, United Kingdom
| | - Sini Junttila
- Turku Bioscience Centre, University of Turku, Turku, Finland
| | - Helen Laycock
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Declan Collins
- Department of Anaesthetics, Chelsea and Westminster NHS Trust, London, United Kingdom
| | - Marcela Vizcaychipi
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
- Department of Anaesthetics, Chelsea and Westminster NHS Trust, London, United Kingdom
| | - Attila Gyenesei
- Szentagothai Research Centre, University of Pecs, Pécs, Hungary
| | - Zoltan Takats
- Biomolecular Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Gabor Jancso
- Department of Physiology, University of Szeged, Szeged, Hungary
| | - Elizabeth Want
- Biomolecular Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Istvan Nagy
- Nociception Group, Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
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4
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Bogdan DM, Studholme K, DiBua A, Gordon C, Kanjiya MP, Yu M, Puopolo M, Kaczocha M. FABP5 deletion in nociceptors augments endocannabinoid signaling and suppresses TRPV1 sensitization and inflammatory pain. Sci Rep 2022; 12:9241. [PMID: 35655086 PMCID: PMC9163147 DOI: 10.1038/s41598-022-13284-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/23/2022] [Indexed: 11/09/2022] Open
Abstract
The endocannabinoid anandamide (AEA) produces antinociceptive effects by activating cannabinoid receptor 1 (CB1). However, AEA also serves as an agonist at transient receptor potential vanilloid receptor 1 (TRPV1) in nociceptive sensory neurons, which may exacerbate pain. This potential functional duality is highlighted by the failure of an inhibitor of the AEA catabolic enzyme fatty acid amide hydrolase (FAAH) to afford pain relief in a clinical trial. Consequently, it remains to be determined whether elevating AEA levels in nociceptors leads to antinociceptive or pro-nociceptive effects. Fatty acid binding protein 5 (FABP5) is an intracellular carrier that mediates AEA transport to FAAH for inactivation. Leveraging the abundant expression of FABP5 in TRPV1+ nociceptors, we employed a conditional knockout strategy to demonstrate that FABP5 deletion in nociceptors augments AEA levels, resulting in the emergence of antinociceptive effects mediated by CB1. Mechanistically, FABP5 deletion suppresses inflammation- and nerve growth factor-mediated TRPV1 sensitization via CB1, an effect mediated by calcineurin. Unexpectedly, inhibition of FAAH failed to blunt TRPV1 sensitization, uncovering functionally distinct outputs resulting from FABP5 and FAAH inhibition. Collectively, our results demonstrate that FABP5 serves a key role in governing endocannabinoid signaling in nociceptors to disrupt TRPV1 sensitization and pain, and position FABP5 as a therapeutic target for the development of analgesics.
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Affiliation(s)
- Diane M Bogdan
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Keith Studholme
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Adriana DiBua
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Chris Gordon
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Martha P Kanjiya
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Mei Yu
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Michelino Puopolo
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
- Stony Brook University Pain and Analgesia Research Center (SPARC), Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Martin Kaczocha
- Department of Anesthesiology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA.
- Stony Brook University Pain and Analgesia Research Center (SPARC), Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11794, USA.
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5
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Li T, Wang G, Hui VCC, Saad D, de Sousa Valente J, La Montanara P, Nagy I. TRPV1 feed-forward sensitisation depends on COX2 upregulation in primary sensory neurons. Sci Rep 2021; 11:3514. [PMID: 33568699 PMCID: PMC7876133 DOI: 10.1038/s41598-021-82829-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 01/15/2021] [Indexed: 12/11/2022] Open
Abstract
Increased activity and excitability (sensitisation) of a series of molecules including the transient receptor potential ion channel, vanilloid subfamily, member 1 (TRPV1) in pain-sensing (nociceptive) primary sensory neurons are pivotal for developing pathological pain experiences in tissue injuries. TRPV1 sensitisation is induced and maintained by two major mechanisms; post-translational and transcriptional changes in TRPV1 induced by inflammatory mediators produced and accumulated in injured tissues, and TRPV1 activation-induced feed-forward signalling. The latter mechanism includes synthesis of TRPV1 agonists within minutes, and upregulation of various receptors functionally linked to TRPV1 within a few hours, in nociceptive primary sensory neurons. Here, we report that a novel mechanism, which contributes to TRPV1 activation-induced TRPV1-sensitisation within ~ 30 min in at least ~ 30% of TRPV1-expressing cultured murine primary sensory neurons, is mediated through upregulation in cyclooxygenase 2 (COX2) expression and increased synthesis of a series of COX2 products. These findings highlight the importance of feed-forward signalling in sensitisation, and the value of inhibiting COX2 activity to control pain, in nociceptive primary sensory neurons in tissue injuries.
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Affiliation(s)
- Tianci Li
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK
| | - Gaoge Wang
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK
| | - Vivian Chin Chin Hui
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK
| | - Daniel Saad
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK
| | - Joao de Sousa Valente
- Section of Vascular Biology and Inflammation Section, School of Cardiovascular Medicine and Sciences, BHF Centre of Research Excellence, King's College London, London, UK
| | - Paolo La Montanara
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK
| | - Istvan Nagy
- Nociception Group, Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Chelsea and Westminster Hospital, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK.
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6
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Oliveira AB, Ribeiro RT, Mello MT, Tufik S, Peres MFP. Anandamide Is Related to Clinical and Cardiorespiratory Benefits of Aerobic Exercise Training in Migraine Patients: A Randomized Controlled Clinical Trial. Cannabis Cannabinoid Res 2019; 4:275-284. [PMID: 31872062 DOI: 10.1089/can.2018.0057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Introduction: Since endocannabinoids have been implicated in migraine pathophysiology, we conducted a randomized, controlled clinical trial to test the effects of a 12-week aerobic exercise intervention on plasma anandamide (AEA) and its relation with clinical, psychological, and cardiorespiratory outcomes. Materials and Methods: Episodic migraine patients taking no preventive drugs and nonheadache individuals were recruited from Hospital São Paulo and a tertiary headache clinic between March 2012 and March 2015. Participants were randomly assigned to receive aerobic exercise or enter the waitlist. Primary outcome was changes in plasma AEA; secondary outcome was number of days with migraine/month; and other clinical variables, mood scores, and cardiorespiratory fitness were chosen as tertiary outcomes. Measurements were taken on headache-free days. Data were analyzed by generalized linear models. Discussion: Fifty participants concluded the study (mean±SD age=36.2±10.9, and BMI=26.5±4.5). The plasma AEA reduced in migraine exercise (p<0.05) and control exercise groups (p<0.01). The number of days with migraine (p<0.01), migraine attacks (p<0.05), and abortive medication used (p<0.05) reduced in the migraine exercise group, whereas cardiorespiratory fitness increased in migraine exercise and control exercise groups (both p<0.05). Anxiety, depression, anger, and fatigue scores improved in the migraine exercise group (p<0.05 for all). Significant correlations between reduction in abortive medication used and cardiorespiratory fitness (r=-0.81 p<0.001), and reduced AEA (r=0.68 p<0.05) were found. Conclusions: This study suggests that peripheral AEA metabolism may be partly linked to the clinical and cardiorespiratory benefits of regular aerobic exercise in migraine patients. Trials registration: #NCT01972607.
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Affiliation(s)
- Arão Belitardo Oliveira
- Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Marco Tulio Mello
- Departamento de Ciências do Esporte, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mario Fernando Prieto Peres
- Hospital Israelita Albert Einstein, Instituto do Cérebro, São Paulo, Brazil.,Instituto de Psiquiatria, Hospital das Clínicas da Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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7
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Charrua A, Matos R, Oliveira R, Marczylo T, Nagy I, Cruz F. Fatty acid amide hydrolase inhibition normalises bladder function and reduces pain through normalising the anandamide/palmitoylethanolamine ratio in the inflamed bladder of rats. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:263-272. [PMID: 31522241 DOI: 10.1007/s00210-019-01729-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 09/06/2019] [Indexed: 12/27/2022]
Abstract
Fatty acid amide hydrolase inhibition may be used to control bladder function and pain by modulating endocannabinoid levels in cystitis. We studied the effect of the peripherally restricted fatty acid amide hydrolase inhibitor URB937 in bladder reflex activity and bladder pain using the lipopolysaccharide model of cystitis. We also correlated the URB937's effects with tissue levels of the endocannabinoids anandamide and palmitoylethanolamine. URB937 did not change the reflex activity of normal bladders. In inflamed bladders, URB937 had a U-shaped dose-response curve; following an initial cannabinoid receptor type 1-mediated reduction in pain responses and normalisation of bladder reflex activity, URB937 gradually increased both pain responses and bladder reflex activity through the transient receptor potential ion channel subfamily V member 1. Chronic cystitis increased the tissue levels of anandamide and decreased those of palmitoylethanolamine. At the dose that normalised bladder reflex activity and decreased pain responses, URB937 normalised the levels of anandamide and palmitoylethanolamine in the bladder. At high doses that induced excitatory effects, URB937 apparently did not change anandamide and palmitoylethanolamine levels, which therefore were in the range of the inflamed bladder. Fatty acid amide hydrolase inhibition results in complex changes in bladder endocannabinoid levels. The therapeutic effect of fatty acid amide hydrolase inhibitors is not related to increase in anandamide levels but rather a normalisation of the anandamide and palmitoylethanolamine level ratio.
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Affiliation(s)
- Ana Charrua
- Departamento de Biomedicina-Unidade de Biologia Experimental, Faculdade de Medicina da Universidade do Porto, Rua Dr. Plácido da Costa, 91, 4200, Porto, Portugal. .,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
| | - Rita Matos
- Departamento de Biomedicina-Unidade de Biologia Experimental, Faculdade de Medicina da Universidade do Porto, Rua Dr. Plácido da Costa, 91, 4200, Porto, Portugal.,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,IPATIMUP-Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Raquel Oliveira
- Departamento de Biomedicina-Unidade de Biologia Experimental, Faculdade de Medicina da Universidade do Porto, Rua Dr. Plácido da Costa, 91, 4200, Porto, Portugal.,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Tim Marczylo
- Toxicology Department, Public Health England, Chilton, UK
| | - Istvan Nagy
- Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Francisco Cruz
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Departamento de Urologia, Hospital S. João, Porto, Portugal
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8
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Nerandzic V, Mrozkova P, Adamek P, Spicarova D, Nagy I, Palecek J. Peripheral inflammation affects modulation of nociceptive synaptic transmission in the spinal cord induced by N-arachidonoylphosphatidylethanolamine. Br J Pharmacol 2017; 175:2322-2336. [PMID: 28476070 DOI: 10.1111/bph.13849] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 04/07/2017] [Accepted: 04/27/2017] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Endocannabinoids play an important role in modulating spinal nociceptive signalling, crucial for the development of pain. The cannabinoid CB1 receptor and the TRPV1 cation channel are both activated by the endocannabinoid anandamide, a product of biosynthesis from the endogenous lipid precursor N-arachidonoylphosphatidylethanolamine (20:4-NAPE). Here, we report CB1 receptor- and TRPV1-mediated effects of 20:4-NAPE on spinal synaptic transmission in control and inflammatory conditions. EXPERIMENTAL APPROACH Spontaneous (sEPSCs) and dorsal root stimulation-evoked (eEPSCs) excitatory postsynaptic currents from superficial dorsal horn neurons in rat spinal cord slices were assessed. Peripheral inflammation was induced by carrageenan. Anandamide concentration was assessed by mass spectrometry. KEY RESULTS Application of 20:4-NAPE increased anandamide concentration in vitro. 20:4-NAPE (20 μM) decreased sEPSCs frequency and eEPSCs amplitude in control and inflammatory conditions. The inhibitory effect of 20:4-NAPE was sensitive to CB1 receptor antagonist PF514273 (0.2 μM) in both conditions, but to the TRPV1 antagonist SB366791 (10 μM) only after inflammation. After inflammation, 20:4-NAPE increased sEPSCs frequency in the presence of PF514273 and this increase was blocked by SB366791. CONCLUSIONS AND IMPLICATIONS While 20:4-NAPE treatment inhibited the excitatory synaptic transmission in both naive and inflammatory conditions, peripheral inflammation altered the underlying mechanisms. Our data indicate that 20:4-NAPE application induced mainly CB1 receptor-mediated inhibitory effects in naive animals while TRPV1-mediated mechanisms were also involved after inflammation. Increasing anandamide levels for analgesic purposes by applying substrate for its local synthesis may be more effective than systemic anandamide application or inhibition of its degradation. LINKED ARTICLES This article is part of a themed section on Recent Advances in Targeting Ion Channels to Treat Chronic Pain. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.12/issuetoc.
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Affiliation(s)
- Vladimir Nerandzic
- Department of Functional Morphology, Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic
| | - Petra Mrozkova
- Department of Functional Morphology, Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic
| | - Pavel Adamek
- Department of Functional Morphology, Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic.,Faculty of Science, Charles University, Prague, Czech Republic
| | - Diana Spicarova
- Department of Functional Morphology, Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic
| | - Istvan Nagy
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer Imperial College London, Faculty of Medicine, Chelsea and Westminster Hospital, London, UK
| | - Jiri Palecek
- Department of Functional Morphology, Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic
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9
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Sousa-Valente J, Varga A, Torres-Perez JV, Jenes A, Wahba J, Mackie K, Cravatt B, Ueda N, Tsuboi K, Santha P, Jancso G, Tailor H, Avelino A, Nagy I. Inflammation of peripheral tissues and injury to peripheral nerves induce differing effects in the expression of the calcium-sensitive N-arachydonoylethanolamine-synthesizing enzyme and related molecules in rat primary sensory neurons. J Comp Neurol 2017; 525:1778-1796. [PMID: 27997038 DOI: 10.1002/cne.24154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 10/17/2016] [Accepted: 11/06/2016] [Indexed: 11/11/2022]
Abstract
Elevation of intracellular Ca2+ concentration induces the synthesis of N-arachydonoylethanolamine (anandamide) in a subpopulation of primary sensory neurons. N-acylphosphatidylethanolamine phospholipase D (NAPE-PLD) is the only known enzyme that synthesizes anandamide in a Ca2+ -dependent manner. NAPE-PLD mRNA as well as anandamide's main targets, the excitatory transient receptor potential vanilloid type 1 ion channel (TRPV1), the inhibitory cannabinoid type 1 (CB1) receptor, and the main anandamide-hydrolyzing enzyme fatty acid amide hydrolase (FAAH), are all expressed by subpopulations of nociceptive primary sensory neurons. Thus, NAPE-PLD, TRPV1, the CB1 receptor, and FAAH could form an autocrine signaling system that could shape the activity of a major subpopulation of nociceptive primary sensory neurons, contributing to the development of pain. Although the expression patterns of TRPV1, the CB1 receptor, and FAAH have been comprehensively elucidated, little is known about NAPE-PLD expression in primary sensory neurons under physiological and pathological conditions. This study shows that NAPE-PLD is expressed by about one-third of primary sensory neurons, the overwhelming majority of which also express nociceptive markers as well as the CB1 receptor, TRPV1, and FAAH. Inflammation of peripheral tissues and injury to peripheral nerves induce differing but concerted changes in the expression pattern of NAPE-PLD, the CB1 receptor, TRPV1, and FAAH. Together these data indicate the existence of the anatomical basis for an autocrine signaling system in a major proportion of nociceptive primary sensory neurons and that alterations in that autocrine signaling by peripheral pathologies could contribute to the development of both inflammatory and neuropathic pain.
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Affiliation(s)
- João Sousa-Valente
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
| | - Angelika Varga
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom.,Department of Physiology, University of Debrecen, Medical and Health Science Center, Debrecen, H-4012, Hungary
| | - Jose Vicente Torres-Perez
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
| | - Agnes Jenes
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom.,Department of Physiology, University of Debrecen, Medical and Health Science Center, Debrecen, H-4012, Hungary
| | - John Wahba
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
| | - Ken Mackie
- Department of Psychological and Brain Sciences, Gill Center for Biomedical Sciences, Indiana University, Bloomington, Indiana, 47405
| | - Benjamin Cravatt
- The Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California, 92037
| | - Natsuo Ueda
- Department of Biochemistry, Kagawa University School of Medicine, Miki, Kagawa, 761-0793, Japan
| | - Kazuhito Tsuboi
- Department of Biochemistry, Kagawa University School of Medicine, Miki, Kagawa, 761-0793, Japan
| | - Peter Santha
- Department of Physiology, University of Szeged, 6720, Szeged, Hungary
| | - Gabor Jancso
- Department of Physiology, University of Szeged, 6720, Szeged, Hungary
| | - Hiren Tailor
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
| | - António Avelino
- Departamento de Biologia Experimental, Faculdade de Medicina do Porto, 4200-450, Porto, Portugal.,I3S Instituto de Investigação e Inovação em Saúde, IBMC Instituto de Biologia Molecular e Celular, 4200-135, Porto, Portugal
| | - Istvan Nagy
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, United Kingdom
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Chen J, Varga A, Selvarajah S, Jenes A, Dienes B, Sousa-Valente J, Kulik A, Veress G, Brain SD, Baker D, Urban L, Mackie K, Nagy I. Spatial Distribution of the Cannabinoid Type 1 and Capsaicin Receptors May Contribute to the Complexity of Their Crosstalk. Sci Rep 2016; 6:33307. [PMID: 27653550 PMCID: PMC5032030 DOI: 10.1038/srep33307] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/24/2016] [Indexed: 01/07/2023] Open
Abstract
The cannabinoid type 1 (CB1) receptor and the capsaicin receptor (TRPV1) exhibit co-expression and complex, but largely unknown, functional interactions in a sub-population of primary sensory neurons (PSN). We report that PSN co-expressing CB1 receptor and TRPV1 form two distinct sub-populations based on their pharmacological properties, which could be due to the distribution pattern of the two receptors. Pharmacologically, neurons respond either only to capsaicin (COR neurons) or to both capsaicin and the endogenous TRPV1 and CB1 receptor ligand anandamide (ACR neurons). Blocking or deleting the CB1 receptor only reduces both anandamide- and capsaicin-evoked responses in ACR neurons. Deleting the CB1 receptor also reduces the proportion of ACR neurons without any effect on the overall number of capsaicin-responding cells. Regarding the distribution pattern of the two receptors, neurons express CB1 and TRPV1 receptors either isolated in low densities or in close proximity with medium/high densities. We suggest that spatial distribution of the CB1 receptor and TRPV1 contributes to the complexity of their functional interaction.
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Affiliation(s)
- Jie Chen
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK.,Department of Anaesthesiology, Southwest Hospital, Third Military Medical University, Gaotanyan 19 Street, Shapingba, Chongqing 400038, P. R. China
| | - Angelika Varga
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK.,MTA-DE-NAP B-Pain Control Research GroupDepartment of Physiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, H-4012, Hungary
| | - Srikumaran Selvarajah
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Agnes Jenes
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK.,MTA-DE-NAP B-Pain Control Research GroupDepartment of Physiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, H-4012, Hungary
| | - Beatrix Dienes
- MTA-DE-NAP B-Pain Control Research GroupDepartment of Physiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, H-4012, Hungary
| | - Joao Sousa-Valente
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
| | - Akos Kulik
- Institute of Physiology, University of Freiburg, Germany D-79104 Freiburg, Germany.,BIOSS Centre for Biological Signalling Studies, University of Freiburg, D-79104, Germany
| | - Gabor Veress
- Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Susan D Brain
- BHF Cardiovascular Centre of Excellence and Centre of Integrative Biomedicine, Cardiovascular Division, King's College London, London SE1 9NH, UK
| | - David Baker
- Centre for Neuroscience and Trauma, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London, E1 2AT, UK
| | - Laszlo Urban
- Preclinical Secondary Pharmacology, Preclinical Safety, Novartis Institutes for Biommedical Research, Cambridge, MA 01932, USA
| | - Ken Mackie
- Department of Psychological and Brain Sciences and Program in Neuroscience, Indiana University, The Gill Center, 702 N. Walnut Grove Avenue, Bloomington, IN 47405, USA
| | - Istvan Nagy
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW10 9NH, UK
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Spicarova D, Nerandzic V, Palecek J. Update on the role of spinal cord TRPV1 receptors in pain modulation. Physiol Res 2014; 63:S225-36. [PMID: 24564662 DOI: 10.33549/physiolres.932713] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The structure, expression and function of the transient receptor potential vanilloid 1 (TRPV1) receptor were intensively studied since the cloning in 1997 and TRPV1 receptors are now considered to act as transducers and molecular integrators of nociceptive stimuli in the periphery. In contrast, spinal TRPV1 receptors were studied less extensively and their role in pain modulation is still not fully understood. This short review is a follow up on our previous summary in this area (Spicarova and Palecek 2008). The aim was to review preferentially the most recent findings concerning the role of the spinal TRPV1 receptors, published within the last five years. The update is given on the expression and function of the spinal TRPV1 receptors, their activation by endogenous agonists, interaction between the endocannabinoid and endovanillod system and possible role of the spinal TRPV1 receptors in pathological pain states. There is now mounting evidence that TRPV1 receptors may be an important element in modulation of nociceptive information at the spinal cord level and represent an interesting target for analgesic therapy.
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Affiliation(s)
- D Spicarova
- Department of Functional Morphology, Institute of Physiology Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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Alterations in the anandamide metabolism in the development of neuropathic pain. BIOMED RESEARCH INTERNATIONAL 2014; 2014:686908. [PMID: 25276812 PMCID: PMC4167645 DOI: 10.1155/2014/686908] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 07/04/2014] [Accepted: 07/06/2014] [Indexed: 11/18/2022]
Abstract
Endocannabinoids (EC), particularly anandamide (AEA), released constitutively in pain pathways might be accountable for the inhibitory effect on nociceptors. Pathogenesis of neuropathic pain may reflect complex remodeling of the dorsal root ganglia (DRGs) and spinal cord EC system. Multiple pathways involved both in the biosynthesis and degradation of AEA have been suggested. We investigated the local synthesis and degradation features of AEA in DRGs and spinal cord during the development and maintenance of pain in a model of chronic constriction injury (CCI). All AEA synthesis and degradation enzymes are present on the mRNA level in DRGs and lumbar spinal cord of intact as well as CCI-treated animals. Deregulation of EC system components was consistent with development of pain phenotype at days 3, 7, and 14 after CCI. The expression levels of enzymes involved in AEA degradation was significantly upregulated ipsilateral in DRGs and spinal cord at different time points. Expression of enzymes of the alternative, sPLA2-dependent and PLC-dependent, AEA synthesis pathways was elevated in both of the analyzed structures at all time points. Our data have shown an alteration of alternative AEA synthesis and degradation pathways, which might contribute to the variation of AEA levels and neuropathic pain development.
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13
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Sousa-Valente J, Varga A, Ananthan K, Khajuria A, Nagy I. Anandamide in primary sensory neurons: too much of a good thing? Eur J Neurosci 2014; 39:409-18. [DOI: 10.1111/ejn.12467] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 11/22/2013] [Accepted: 12/02/2013] [Indexed: 01/01/2023]
Affiliation(s)
- João Sousa-Valente
- Section of Anaesthetics, Pain Medicine and Intensive Care; Department of Surgery and Cancer; Imperial College London; 369 Fulham Road London SW10 9NH UK
| | - Angelika Varga
- Section of Anaesthetics, Pain Medicine and Intensive Care; Department of Surgery and Cancer; Imperial College London; 369 Fulham Road London SW10 9NH UK
| | - Kajaluxy Ananthan
- Section of Anaesthetics, Pain Medicine and Intensive Care; Department of Surgery and Cancer; Imperial College London; 369 Fulham Road London SW10 9NH UK
| | - Ankur Khajuria
- Section of Anaesthetics, Pain Medicine and Intensive Care; Department of Surgery and Cancer; Imperial College London; 369 Fulham Road London SW10 9NH UK
| | - Istvan Nagy
- Section of Anaesthetics, Pain Medicine and Intensive Care; Department of Surgery and Cancer; Imperial College London; 369 Fulham Road London SW10 9NH UK
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