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Cardinale A, de Iure A, Picconi B. Neuroinflammation and Dyskinesia: A Possible Causative Relationship? Brain Sci 2024; 14:514. [PMID: 38790492 PMCID: PMC11118841 DOI: 10.3390/brainsci14050514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/14/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024] Open
Abstract
Levodopa (L-DOPA) treatment represents the gold standard therapy for Parkinson's disease (PD) patients. L-DOPA therapy shows many side effects, among them, L-DOPA-induced dyskinesias (LIDs) remain the most problematic. Several are the mechanisms underlying these processes: abnormal corticostriatal neurotransmission, pre- and post-synaptic neuronal events, changes in gene expression, and altered plasticity. In recent years, researchers have also suggested non-neuronal mechanisms as a possible cause for LIDs. We reviewed recent clinical and pre-clinical studies on neuroinflammation contribution to LIDs. Microglia and astrocytes seem to play a strategic role in LIDs phenomenon. In particular, their inflammatory response affects neuron-glia communication, synaptic activity and neuroplasticity, contributing to LIDs development. Finally, we describe possible new therapeutic interventions for dyskinesia prevention targeting glia cells.
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Affiliation(s)
- Antonella Cardinale
- Experimental Neurophysiology Laboratory, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.C.); (A.d.I.)
- Department of Human Sciences and Quality of Life Promotion, Università Telematica San Raffaele, 00166 Rome, Italy
| | - Antonio de Iure
- Experimental Neurophysiology Laboratory, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.C.); (A.d.I.)
- Department of Human Sciences and Quality of Life Promotion, Università Telematica San Raffaele, 00166 Rome, Italy
| | - Barbara Picconi
- Experimental Neurophysiology Laboratory, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.C.); (A.d.I.)
- Department of Human Sciences and Quality of Life Promotion, Università Telematica San Raffaele, 00166 Rome, Italy
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2
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Mancini M, Calculli A, Di Martino D, Pisani A. Interplay between endocannabinoids and dopamine in the basal ganglia: implications for pain in Parkinson's disease. JOURNAL OF ANESTHESIA, ANALGESIA AND CRITICAL CARE 2024; 4:33. [PMID: 38745258 PMCID: PMC11094869 DOI: 10.1186/s44158-024-00169-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
Pain is a complex phenomenon, and basal ganglia circuitry integrates many aspects of pain including motor, emotional, autonomic, and cognitive responses. Perturbations in dopamine (DA) signaling are implicated in the pathogenesis of chronic pain due to its involvement in both pain perception and relief. Several lines of evidence support the role of endocannabinoids (eCBs) in the regulation of many electrical and chemical aspects of DAergic neuron function including excitability, synaptic transmission, integration, and plasticity. However, eCBs play an even more intricate and intimate relationship with DA, as indicated by the adaptive changes in the eCB system following DA depletion. Although the precise mechanisms underlying DA control on pain are not fully understood, given the high correlation of eCB and DAergic system, it is conceivable that eCBs may be part of these mechanisms.In this brief survey, we describe the reciprocal regulation of eCB-DA neurotransmission with a particular emphasis on the actions of eCBs on ionic and synaptic signaling in DAergic neurons mediated by CB receptors or independent on them. Furthermore, we analyze the eCB-DA imbalance which characterizes pain condition and report the implications of reduced DA levels for pain in Parkinson's disease. Lastly, we discuss the potential of the eCB-DA system in the development of future therapeutic strategies for the treatment of pain.
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Affiliation(s)
- Maria Mancini
- Department of Brain and Behavioral Sciences, University of Pavia, c/o Mondino Foundation Via Mondino, 2, Pavia, 27100, Italy
| | - Alessandra Calculli
- Department of Brain and Behavioral Sciences, University of Pavia, c/o Mondino Foundation Via Mondino, 2, Pavia, 27100, Italy
- IRCCS Mondino Foundation, Pavia, 27100, Italy
| | - Deborah Di Martino
- Department of Brain and Behavioral Sciences, University of Pavia, c/o Mondino Foundation Via Mondino, 2, Pavia, 27100, Italy
- IRCCS Mondino Foundation, Pavia, 27100, Italy
| | - Antonio Pisani
- Department of Brain and Behavioral Sciences, University of Pavia, c/o Mondino Foundation Via Mondino, 2, Pavia, 27100, Italy.
- IRCCS Mondino Foundation, Pavia, 27100, Italy.
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3
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Neuroinflammation microenvironment sharpens seizure circuit. Neurobiol Dis 2023; 178:106027. [PMID: 36736598 DOI: 10.1016/j.nbd.2023.106027] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
A large set of inflammatory molecules and their receptors are induced in epileptogenic foci of patients with pharmacoresistant epilepsies of structural etiologies or with refractory status epilepticus. Studies in animal models mimicking these clinical conditions have shown that the activation of specific inflammatory signallings in forebrain neurons or glial cells may modify seizure thresholds, thus contributing to both ictogenesis and epileptogenesis. The search for mechanisms underlying these effects has highlighted that inflammatory mediators have CNS-specific neuromodulatory functions, in addition to their canonical activation of immune responses for pathogen recognition and clearance. This review reports the neuromodulatory effects of inflammatory mediators and how they contribute to alter the inhibitory/excitatory balance in neural networks that underlie seizures. In particular, we describe key findings related to the ictogenic role of prototypical inflammatory cytokines (IL-1β and TNF) and danger signals (HMGB1), their modulatory effects of neuronal excitability, and the mechanisms underlying these effects. It will be discussed how harnessing these neuromodulatory properties of immune mediators may lead to novel therapies to control drug-resistant seizures.
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4
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Pilat D, Paumier JM, García-González L, Louis L, Stephan D, Manrique C, Khrestchatisky M, Di Pasquale E, Baranger K, Rivera S. MT5-MMP promotes neuroinflammation, neuronal excitability and Aβ production in primary neuron/astrocyte cultures from the 5xFAD mouse model of Alzheimer’s disease. J Neuroinflammation 2022; 19:65. [PMID: 35277173 PMCID: PMC8915472 DOI: 10.1186/s12974-022-02407-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 01/30/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Membrane-type matrix metalloproteinase 5 (MT5-MMP) deficiency in the 5xFAD mouse model of Alzheimer's disease (AD) reduces brain neuroinflammation and amyloidosis, and prevents deficits in synaptic activity and cognition in prodromal stages of the disease. In addition, MT5-MMP deficiency prevents interleukin-1 beta (IL-1β)-mediated inflammation in the peripheral nervous system. In this context, we hypothesized that the MT5-MMP/IL-1β tandem could regulate nascent AD pathogenic events in developing neural cells shortly after the onset of transgene activation.
Methods
To test this hypothesis, we used 11–14 day in vitro primary cortical cultures from wild type, MT5-MMP−/−, 5xFAD and 5xFAD/MT5-MMP−/− mice, and evaluated the impact of MT5-MMP deficiency and IL-1β treatment for 24 h, by performing whole cell patch-clamp recordings, RT-qPCR, western blot, gel zymography, ELISA, immunocytochemistry and adeno-associated virus (AAV)-mediated transduction.
Results
5xFAD cells showed higher levels of MT5-MMP than wild type, concomitant with higher basal levels of inflammatory mediators. Moreover, MT5-MMP-deficient cultures had strong decrease of the inflammatory response to IL-1β, as well as decreased stability of recombinant IL-1β. The levels of amyloid beta peptide (Aβ) were similar in 5xFAD and wild-type cultures, and IL-1β treatment did not affect Aβ levels. Instead, the absence of MT5-MMP significantly reduced Aβ by more than 40% while sparing APP metabolism, suggesting altogether no functional crosstalk between IL-1β and APP/Aβ, as well as independent control of their levels by MT5-MMP. The lack of MT5-MMP strongly downregulated the AAV-induced neuronal accumulation of the C-terminal APP fragment, C99, and subsequently that of Aβ. Finally, MT5-MMP deficiency prevented basal hyperexcitability observed in 5xFAD neurons, but not hyperexcitability induced by IL-1β treatment.
Conclusions
Neuroinflammation and hyperexcitability precede Aβ accumulation in developing neural cells with nascent expression of AD transgenes. MT5-MMP deletion is able to tune down basal neuronal inflammation and hyperexcitability, as well as APP/Aβ metabolism. In addition, MT5-MMP deficiency prevents IL-1β-mediated effects in brain cells, except hyperexcitability. Overall, this work reinforces the idea that MT5-MMP is at the crossroads of pathogenic AD pathways that are already incipiently activated in developing neural cells, and that targeting MT5-MMP opens interesting therapeutic prospects.
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5
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Martínez-Aguirre C, Cinar R, Rocha L. Targeting Endocannabinoid System in Epilepsy: For Good or for Bad. Neuroscience 2021; 482:172-185. [PMID: 34923038 DOI: 10.1016/j.neuroscience.2021.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 02/07/2023]
Abstract
Epilepsy is a neurological disorder with a high prevalence worldwide. Several studies carried out during the last decades indicate that the administration of cannabinoids as well as the activation of the endocannabinoid system (ECS) represent a therapeutic strategy to control epilepsy. However, there are controversial studies indicating that activation of ECS results in cell damage, inflammation and neurotoxicity, conditions that facilitate the seizure activity. The present review is focused to present findings supporting this issue. According to the current discrepancies, it is relevant to elucidate the different effects induced by the activation of ECS and determine the conditions under which it facilitates the seizure activity.
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Affiliation(s)
| | - Resat Cinar
- Section on Fibrotic Disorders, National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH), Rockville, USA
| | - Luisa Rocha
- Department of Pharmacobiology, Center for Research and Advanced Studies, Mexico City, Mexico.
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6
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Bellingacci L, Mancini A, Gaetani L, Tozzi A, Parnetti L, Di Filippo M. Synaptic Dysfunction in Multiple Sclerosis: A Red Thread from Inflammation to Network Disconnection. Int J Mol Sci 2021; 22:ijms22189753. [PMID: 34575917 PMCID: PMC8469646 DOI: 10.3390/ijms22189753] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/31/2021] [Accepted: 09/03/2021] [Indexed: 12/24/2022] Open
Abstract
Multiple sclerosis (MS) has been clinically considered a chronic inflammatory disease of the white matter; however, in the last decade growing evidence supported an important role of gray matter pathology as a major contributor of MS-related disability and the involvement of synaptic structures assumed a key role in the pathophysiology of the disease. Synaptic contacts are considered central units in the information flow, involved in synaptic transmission and plasticity, critical processes for the shaping and functioning of brain networks. During the course of MS, the immune system and its diffusible mediators interact with synaptic structures leading to changes in their structure and function, influencing brain network dynamics. The purpose of this review is to provide an overview of the existing literature on synaptic involvement during experimental and human MS, in order to understand the mechanisms by which synaptic failure eventually leads to brain networks alterations and contributes to disabling MS symptoms and disease progression.
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Affiliation(s)
- Laura Bellingacci
- Section of Neurology, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (L.B.); (A.M.); (L.G.); (L.P.)
| | - Andrea Mancini
- Section of Neurology, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (L.B.); (A.M.); (L.G.); (L.P.)
| | - Lorenzo Gaetani
- Section of Neurology, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (L.B.); (A.M.); (L.G.); (L.P.)
| | - Alessandro Tozzi
- Section of Physiology and Biochemistry, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy;
| | - Lucilla Parnetti
- Section of Neurology, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (L.B.); (A.M.); (L.G.); (L.P.)
| | - Massimiliano Di Filippo
- Section of Neurology, Department of Medicine and Surgery, University of Perugia, 06132 Perugia, Italy; (L.B.); (A.M.); (L.G.); (L.P.)
- Correspondence: ; Tel.: +39-075-578-3830
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7
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Mancini A, Ghiglieri V, Parnetti L, Calabresi P, Di Filippo M. Neuro-Immune Cross-Talk in the Striatum: From Basal Ganglia Physiology to Circuit Dysfunction. Front Immunol 2021; 12:644294. [PMID: 33953715 PMCID: PMC8091963 DOI: 10.3389/fimmu.2021.644294] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 03/16/2021] [Indexed: 01/02/2023] Open
Abstract
The basal ganglia network is represented by an interconnected group of subcortical nuclei traditionally thought to play a crucial role in motor learning and movement execution. During the last decades, knowledge about basal ganglia physiology significantly evolved and this network is now considered as a key regulator of important cognitive and emotional processes. Accordingly, the disruption of basal ganglia network dynamics represents a crucial pathogenic factor in many neurological and psychiatric disorders. The striatum is the input station of the circuit. Thanks to the synaptic properties of striatal medium spiny neurons (MSNs) and their ability to express synaptic plasticity, the striatum exerts a fundamental integrative and filtering role in the basal ganglia network, influencing the functional output of the whole circuit. Although it is currently established that the immune system is able to regulate neuronal transmission and plasticity in specific cortical areas, the role played by immune molecules and immune/glial cells in the modulation of intra-striatal connections and basal ganglia activity still needs to be clarified. In this manuscript, we review the available evidence of immune-based regulation of synaptic activity in the striatum, also discussing how an abnormal immune activation in this region could be involved in the pathogenesis of inflammatory and degenerative central nervous system (CNS) diseases.
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Affiliation(s)
- Andrea Mancini
- Section of Neurology, Department of Medicine and Surgery, Università degli Studi di Perugia, Perugia, Italy
| | | | - Lucilla Parnetti
- Section of Neurology, Department of Medicine and Surgery, Università degli Studi di Perugia, Perugia, Italy
| | - Paolo Calabresi
- Section of Neurology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.,Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Massimiliano Di Filippo
- Section of Neurology, Department of Medicine and Surgery, Università degli Studi di Perugia, Perugia, Italy
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8
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Horváth Á, Payrits M, Steib A, Kántás B, Biró-Süt T, Erostyák J, Makkai G, Sághy É, Helyes Z, Szőke É. Analgesic Effects of Lipid Raft Disruption by Sphingomyelinase and Myriocin via Transient Receptor Potential Vanilloid 1 and Transient Receptor Potential Ankyrin 1 Ion Channel Modulation. Front Pharmacol 2021; 11:593319. [PMID: 33584270 PMCID: PMC7873636 DOI: 10.3389/fphar.2020.593319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/24/2020] [Indexed: 01/09/2023] Open
Abstract
Transient Receptor Potential (TRP) Vanilloid 1 and Ankyrin 1 (TRPV1, TRPA1) cation channels are expressed in nociceptive primary sensory neurons, and integratively regulate nociceptor and inflammatory functions. Lipid rafts are liquid-ordered plasma membrane microdomains rich in cholesterol, sphingomyelin and gangliosides. We earlier showed that lipid raft disruption inhibits TRPV1 and TRPA1 functions in primary sensory neuronal cultures. Here we investigated the effects of sphingomyelinase (SMase) cleaving membrane sphingomyelin and myriocin (Myr) prohibiting sphingolipid synthesis in mouse pain models of different mechanisms. SMase (50 mU) or Myr (1 mM) pretreatment significantly decreased TRPV1 activation (capsaicin)-induced nocifensive eye-wiping movements by 37 and 41%, respectively. Intraplantar pretreatment by both compounds significantly diminished TRPV1 stimulation (resiniferatoxin)-evoked thermal allodynia developing mainly by peripheral sensitization. SMase (50 mU) also decreased mechanical hyperalgesia related to both peripheral and central sensitizations. SMase (50 mU) significantly reduced TRPA1 activation (formalin)-induced acute nocifensive behaviors by 64% in the second, neurogenic inflammatory phase. Myr, but not SMase altered the plasma membrane polarity related to the cholesterol composition as shown by fluorescence spectroscopy. These are the first in vivo results showing that sphingolipids play a key role in lipid raft integrity around nociceptive TRP channels, their activation and pain sensation. It is concluded that local SMase administration might open novel perspective for analgesic therapy.
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Affiliation(s)
- Ádám Horváth
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Maja Payrits
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Anita Steib
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Boglárka Kántás
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Tünde Biró-Süt
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - János Erostyák
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary.,Department of Experimental Physics, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Géza Makkai
- János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary.,Department of Experimental Physics, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Éva Sághy
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary.,Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Helyes
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
| | - Éva Szőke
- Deparment of Pharmacology and Pharmacotherapy, University of Pécs, Medical School, Pécs, Hungary.,János Szentágothai Research Centre and Centre for Neuroscience, University of Pécs, Pécs, Hungary
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9
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Kuter KZ, Cenci MA, Carta AR. The role of glia in Parkinson's disease: Emerging concepts and therapeutic applications. PROGRESS IN BRAIN RESEARCH 2020; 252:131-168. [PMID: 32247363 DOI: 10.1016/bs.pbr.2020.02.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Originally believed to primarily affect neurons, Parkinson's disease (PD) has recently been recognized to also affect the functions and integrity of microglia and astroglia, two cell categories of fundamental importance to brain tissue homeostasis, defense, and repair. Both a loss of glial supportive-defensive functions and a toxic gain of glial functions are implicated in the neurodegenerative process. Moreover, the chronic treatment with L-DOPA may cause maladaptive glial plasticity favoring a development of therapy complications. This chapter focuses on the pathophysiology of PD from a glial point of view, presenting this rapidly growing field from the first discoveries made to the most recent developments. We report and compare histopathological and molecular findings from experimental models of PD and human studies. We moreover discuss the important role played by astrocytes in compensatory adaptations taking place during presymptomatic disease stages. We finally describe examples of potential therapeutic applications stemming from an increased understanding of the important roles of glia in PD.
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Affiliation(s)
- Katarzyna Z Kuter
- Department of Neuropsychopharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.
| | - M Angela Cenci
- Basal Ganglia Pathophysiology Unit, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Anna R Carta
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy.
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10
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Saliba SW, Bonifacino T, Serchov T, Bonanno G, de Oliveira ACP, Fiebich BL. Neuroprotective Effect of AM404 Against NMDA-Induced Hippocampal Excitotoxicity. Front Cell Neurosci 2019; 13:566. [PMID: 31920563 PMCID: PMC6932953 DOI: 10.3389/fncel.2019.00566] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 12/06/2019] [Indexed: 11/13/2022] Open
Abstract
Different studies have demonstrated that inflammation and alterations in glutamate neurotransmission are two events contributing to the pathophysiology of neurodegenerative or neurological disorders. There are evidences that N-arachidonoylphenolamine (AM404), a cannabinoid system modulator and paracetamol metabolite, modulates inflammation and exerts neuroprotective effects on Huntington's (HD) and Parkinson's diseases (PD), and ischemia. However, the effects of AM404 on the production of inflammatory mediators and excitotoxicity in brain tissue stimulated with N-methyl-D-aspartic acid (NMDA) are not elucidated. In this present study, we investigated the effects of AM404 on the production of inflammatory mediators and neuronal cell death induced by NMDA in organotypic hippocampal slices cultures (OHSC) using qPCR, western blot (WB), and immunohistochemistry. Moreover, to comprehend the mechanism of excitotoxicity, we evaluated the effects of AM404 on glutamate release in hippocampal synaptosomes and the NMDA-induced calcium responses in acute hippocampal slices. Our results showed that AM404 led to a significant decrease in cell death induced by NMDA, through a mechanism possibly involving the reduction of glutamate release and the calcium ions responses. Furthermore, it decreased the expression of the interleukin (IL)-1β. This study provides new significant insights about the anti-inflammatory and neuroprotection effects of AM404 on NMDA-induced excitotoxicity. To understand the effects of AM404 in these processes might contribute to the therapeutic potential of AM404 in diseases with involvement of neuroinflammation and neurodegeneration and might lead to a possible future treatment of neurodegenerative diseases.
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Affiliation(s)
- Soraya Wilke Saliba
- Neuroimmunology and Neurochemistry Research Group, Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Tiziana Bonifacino
- Unit of Pharmacology and Toxicology and Center of Excellence for Biomedical Research, Department of Pharmacy, School of Medical and Pharmaceutical Sciences, University of Genoa, Genoa, Italy
| | - Tsvetan Serchov
- Laboratory of Stereotaxy and Interventional Neuroscience, Department of Stereotactic and Functional Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Giambattista Bonanno
- Unit of Pharmacology and Toxicology and Center of Excellence for Biomedical Research, Department of Pharmacy, School of Medical and Pharmaceutical Sciences, University of Genoa, Genoa, Italy.,Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Ospedale Policlinico San Martino, Genoa, Italy
| | | | - Bernd L Fiebich
- Neuroimmunology and Neurochemistry Research Group, Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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11
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Lin CL, Chang CH, Chang YS, Lu SC, Hsieh YL. Treatment with methyl-β-cyclodextrin prevents mechanical allodynia in resiniferatoxin neuropathy in a mouse model. Biol Open 2019; 8:bio.039511. [PMID: 30578250 PMCID: PMC6361210 DOI: 10.1242/bio.039511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Specialized microdomains which have cholesterol-rich membrane regions contain transient receptor potential vanilloid subtype 1 (TRPV1) are involved in pain development. Our previous studies have demonstrated that the depletion of prostatic acid phosphatase (PAP) – a membrane-bound ectonucleotidase – and disordered adenosine signaling reduce the antinociceptive effect. The role of membrane integrity in the PAP-mediated antinociceptive effect in small-fiber neuropathy remains unclear, especially with respect to whether TRPV1 and PAP are colocalized in the same microdomain which is responsible for PAP-mediated antinociception. Immunohistochemistry was conducted on the dorsal root ganglion to identify the membrane compositions, and pharmacological interventions were conducted using methyl-β-cyclodextrin (MβC) – a membrane integrity disruptor that works by depleting cholesterol – in pure small-fiber neuropathy with resiniferatoxin (RTX). Immunohistochemical evidence indicated that TRPV1 and PAP were highly colocalized with flotillin 1 (66.7%±9.7%) and flotillin 2 (73.7%±6.0%), which reside in part in the microdomain. MβC mildly depleted PAP, which maintained the ability to hydrolyze phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2] and delayed the development of mechanical allodynia. MβC treatment had no role in thermal transduction and neuronal injury following RTX neuropathy. In summary, this study demonstrated the following: (1) membrane cholesterol depletion preserves PAP-mediated antinociception through PI(4,5)P2 hydrolysis and (2) pain hypersensitivity that develops after TRPV1(+) neuron depletion-mediated neurodegeneration following RTX neuropathy is attributable to the downregulation of PAP analgesic signaling. Summary: The role and mechanism of cholesterol-rich membrane integrity in pain development for small-fiber neuropathy remains unclear. Depletion of membrane cholesterol contents preserves functional PAP profiles and the antinociceptive effect after RTX neuropathy.
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Affiliation(s)
- Chih-Lung Lin
- Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.,Faculty of Medicine, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chin-Hong Chang
- Department of Surgery, Chi Mei Medical Center, Tainan 71004, Taiwan
| | - Ying-Shuang Chang
- Department of Anatomy, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Shui-Chin Lu
- Department of Medical Research, Ultrastructural Laboratory, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Yu-Lin Hsieh
- Department of Anatomy, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
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12
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Patel RR, Khom S, Steinman MQ, Varodayan FP, Kiosses WB, Hedges DM, Vlkolinsky R, Nadav T, Polis I, Bajo M, Roberts AJ, Roberto M. IL-1β expression is increased and regulates GABA transmission following chronic ethanol in mouse central amygdala. Brain Behav Immun 2019; 75:208-219. [PMID: 30791967 PMCID: PMC6383367 DOI: 10.1016/j.bbi.2018.10.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/09/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022] Open
Abstract
The interleukin-1 system (IL-1) is a prominent pro-inflammatory pathway responsible for the initiation and regulation of immune responses. Human genetic and preclinical studies suggest a critical role for IL-1β signaling in ethanol drinking and dependence, but little is known about the effects of chronic ethanol on the IL-1 system in addiction-related brain regions such as the central amygdala (CeA). In this study, we generated naïve, non-dependent (Non-Dep) and dependent (Dep) male mice using a paradigm of chronic-intermittent ethanol vapor exposure interspersed with two-bottle choice to examine 1) the expression of IL-1β, 2) the role of the IL-1 system on GABAergic transmission, and 3) the potential interaction with the acute effects of ethanol in the CeA. Immunohistochemistry with confocal microscopy was used to assess expression of IL-1β in microglia and neurons in the CeA, and whole-cell patch clamp recordings were obtained from CeA neurons to measure the effects of IL-1β (50 ng/ml) or the endogenous IL-1 receptor antagonist (IL-1ra; 100 ng/ml) on action potential-dependent spontaneous inhibitory postsynaptic currents (sIPSCs). Overall, we found that IL-1β expression is significantly increased in microglia and neurons of Dep compared to Non-Dep and naïve mice, IL-1β and IL-1ra bi-directionally modulate GABA transmission through both pre- and postsynaptic mechanisms in all three groups, and IL-1β and IL-1ra do not alter the facilitation of GABA release induced by acute ethanol. These data suggest that while ethanol dependence induces a neuroimmune response in the CeA, as indicated by increased IL-1β expression, this does not significantly alter the neuromodulatory role of IL-1β on synaptic transmission.
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Affiliation(s)
- Reesha R Patel
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Sophia Khom
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Michael Q Steinman
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Florence P Varodayan
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - William B Kiosses
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - David M Hedges
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Roman Vlkolinsky
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Tali Nadav
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Ilham Polis
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Michal Bajo
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Amanda J Roberts
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA
| | - Marisa Roberto
- The Scripps Research Institute, 10550 N. Torrey Pines Rd, La Jolla, CA 92037, USA.
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13
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Aparicio N, Grande MT, Ruiz de Martín Esteban S, López A, Ruiz-Pérez G, Amores M, Vázquez C, Martínez-Relimpio AM, Pazos MR, Cravatt BF, Tolón RM, Romero J. Role of interleukin 1-beta in the inflammatory response in a fatty acid amide hydrolase-knockout mouse model of Alzheimer’s disease. Biochem Pharmacol 2018; 157:202-209. [DOI: 10.1016/j.bcp.2018.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/05/2018] [Indexed: 12/17/2022]
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14
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Wang S, Cui W, Zeng M, Ren Y, Han S, Li J. The increased release of amino acid neurotransmitters of the primary somatosensory cortical area in rats contributes to remifentanil-induced hyperalgesia and its inhibition by lidocaine. J Pain Res 2018; 11:1521-1529. [PMID: 30147356 PMCID: PMC6097504 DOI: 10.2147/jpr.s168008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Studies have confirmed that activation of the neurons of primary somatosensory cortex (S1) is involved in the process of remifentanil (Remi)-induced hyperalgesia (RIH), which can be suppressed by lidocaine (Lido). A total intravenous anesthesia model of rats mimicking clinical Remi-based anesthesia was set up to explore the release of amino acid neurotransmitters of S1 cortex in RIH and its inhibition by Lido in this study. Materials and methods Sprague Dawley rats were randomly divided into the following four groups: propofol (Pro), Remi, Remi combined Lido, and Lido groups. Mechanical hyperalgesia was evaluated by von Frey test; the amino acid neurotransmitters in the microdialysates of S1 area were detected by high-performance liquid chromatography (HPLC)-fluorescence, and conventional protein kinase C (cPKC)γ levels in the whole-cell lysates and membrane lipid rafts (MLRs) were determined by Western blotting. Results The von Frey test showed that co-administration of Lido significantly inhibited a Remi-induced decrease in the threshold of the paw withdrawal response in Remi group at 2 h postinfusion. Meanwhile, the Remi-induced increases in both the excitatory and inhibitory amino acid releases in S1 were suppressed by co-administrating Lido within 5 h postinfusion. Western blotting showed that the increased cPKCγ level in the membrane lipid rafts (MLR) induced by Remi was also inhibited by Lido. Conclusion The increased release of amino acid neurotransmitters and the translocation of cPKCγ in MLR suggest the activation of S1 neurons, which may be one of the mechanisms underlying RIH. Lido reduces the release of amino acid neurotransmitters in S1 neurons and the translocation of cPKCγ in MLRs after stopping Remi, which may be one of its antihyperalgesic mechanisms.
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Affiliation(s)
- Shanshan Wang
- Department of Anesthesiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China,
| | - Weihua Cui
- Department of Anesthesiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China,
| | - Min Zeng
- Department of Anesthesiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China,
| | - Yi Ren
- Department of Anesthesiology, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China,
| | - Song Han
- Department of Neurobiology, Beijing Institute for Neuroscience, Capital Medical University, Beijing, People's Republic of China
| | - Junfa Li
- Department of Neurobiology, Beijing Institute for Neuroscience, Capital Medical University, Beijing, People's Republic of China
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15
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Liu X, Quan N. Microglia and CNS Interleukin-1: Beyond Immunological Concepts. Front Neurol 2018; 9:8. [PMID: 29410649 PMCID: PMC5787061 DOI: 10.3389/fneur.2018.00008] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/05/2018] [Indexed: 12/12/2022] Open
Abstract
Activation of microglia and expression of the inflammatory cytokine interleukin-1 (IL-1) in the CNS have become almost synonymous with neuroinflammation. In numerous studies, increased CNS IL-1 expression and altered microglial morphology have been used as hallmarks of CNS inflammation. A central concept of how CNS IL-1 and microglia influence functions of the nervous system was derived from the notion initially generated in the peripheral immune system: IL-1 stimulates monocyte/macrophage (the peripheral counterparts of microglia) to amplify inflammation. It is increasingly clear, however, CNS IL-1 acts on other targets in the CNS and microglia participates in many neural functions that are not related to immunological activities. Further, CNS exhibits immunological privilege (although not as absolute as previously thought), rendering amplification of inflammation within CNS under stringent control. This review will analyze current literature to evaluate the contribution of immunological and non-immunological aspects of microglia/IL-1 interaction in the CNS to gain insights for how these aspects might affect health and disease in the nervous tissue.
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Affiliation(s)
- Xiaoyu Liu
- College of Medicine, Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States
| | - Ning Quan
- College of Medicine, Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States.,Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, United States
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16
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De Caro C, Leo A, Citraro R, De Sarro C, Russo R, Calignano A, Russo E. The potential role of cannabinoids in epilepsy treatment. Expert Rev Neurother 2017; 17:1069-1079. [PMID: 28845714 DOI: 10.1080/14737175.2017.1373019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Epilepsy is one of the world's oldest recognized and prevalent neurological diseases. It has a great negative impact on patients' quality of life (QOL) as a consequence of treatment resistant seizures in about 30% of patients together with drugs' side effects and comorbidities. Therefore, new drugs are needed and cannabinoids, above all cannabidiol, have recently gathered attention. Areas covered: This review summarizes the scientific data from human and animal studies on the major cannabinoids which have been of interest in the treatment of epilepsy, including drugs acting on the endocannabinoid system. Expert commentary: Despite the fact that cannabis has been used for many purposes over 4 millennia, the development of drugs based on cannabinoids has been very slow. Only recently, research has focused on their potential effects and CBD is the first treatment of this group with clinical evidence of efficacy in children with Dravet syndrome; moreover, other studies are currently ongoing to confirm its effectiveness in patients with epilepsy. On the other hand, it will be of interest to understand whether drugs acting on the endocannabinoid system will be able to reach the market and prove their known preclinical efficacy also in patients with epilepsy.
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Affiliation(s)
- Carmen De Caro
- a Department of Science of Health, School of Medicine and Surgery , University "Magna Graecia" of Catanzaro , Catanzaro , Italy
| | - Antonio Leo
- a Department of Science of Health, School of Medicine and Surgery , University "Magna Graecia" of Catanzaro , Catanzaro , Italy
| | - Rita Citraro
- a Department of Science of Health, School of Medicine and Surgery , University "Magna Graecia" of Catanzaro , Catanzaro , Italy
| | - Caterina De Sarro
- a Department of Science of Health, School of Medicine and Surgery , University "Magna Graecia" of Catanzaro , Catanzaro , Italy
| | - Roberto Russo
- b Department of Pharmacy , University of Naples Federico II , Naples , Italy
| | - Antonio Calignano
- b Department of Pharmacy , University of Naples Federico II , Naples , Italy
| | - Emilio Russo
- a Department of Science of Health, School of Medicine and Surgery , University "Magna Graecia" of Catanzaro , Catanzaro , Italy
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Kong WL, Peng YY, Peng BW. Modulation of neuroinflammation: Role and therapeutic potential of TRPV1 in the neuro-immune axis. Brain Behav Immun 2017; 64:354-366. [PMID: 28342781 DOI: 10.1016/j.bbi.2017.03.007] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/04/2017] [Accepted: 03/14/2017] [Indexed: 02/07/2023] Open
Abstract
Transient receptor potential vanilloid type 1 channel (TRPV1), as a ligand-gated non-selective cation channel, has recently been demonstrated to have wide expression in the neuro-immune axis, where its multiple functions occur through regulation of both neuronal and non-neuronal activities. Growing evidence has suggested that TRPV1 is functionally expressed in glial cells, especially in the microglia and astrocytes. Glial cells perform immunological functions in response to pathophysiological challenges through pro-inflammatory or anti-inflammatory cytokines and chemokines in which TRPV1 is involved. Sustaining inflammation might mediate a positive feedback loop of neuroinflammation and exacerbate neurological disorders. Accumulating evidence has suggested that TRPV1 is closely related to immune responses and might be recognized as a molecular switch in the neuroinflammation of a majority of seizures and neurodegenerative diseases. In this review, we evidenced that inflammation modulates the expression and activity of TRPV1 in the central nervous system (CNS) and TRPV1 exerts reciprocal actions over neuroinflammatory processes. Together, the literature supports the hypothesis that TRPV1 may represent potential therapeutic targets in the neuro-immune axis.
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Affiliation(s)
- Wei-Lin Kong
- Department of Physiology, Hubei Provincial Key Laboratory of Developmentally Originated Disorder, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Yuan-Yuan Peng
- Department of Physiology, Hubei Provincial Key Laboratory of Developmentally Originated Disorder, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Bi-Wen Peng
- Department of Physiology, Hubei Provincial Key Laboratory of Developmentally Originated Disorder, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China.
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18
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Mandolesi G, Bullitta S, Fresegna D, Gentile A, De Vito F, Dolcetti E, Rizzo FR, Strimpakos G, Centonze D, Musella A. Interferon-γ causes mood abnormalities by altering cannabinoid CB1 receptor function in the mouse striatum. Neurobiol Dis 2017; 108:45-53. [PMID: 28757328 DOI: 10.1016/j.nbd.2017.07.019] [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: 02/28/2017] [Revised: 07/21/2017] [Accepted: 07/26/2017] [Indexed: 01/10/2023] Open
Abstract
Interferon-γ (IFN-γ) has been implicated in the pathogenesis of multiple sclerosis (MS) and in its animal model, experimental autoimmune encephalomyelitis (EAE). The type-1 cannabinoid receptors (CB1Rs) are heavily involved in MS pathophysiology, and a growing body of evidence suggests that mood disturbances reflect specific effects of proinflammatory cytokines on neuronal activity. Here, we investigated whether IFN-γ could exert a role in the anxiety- and depressive-like behavior observed in mice with EAE, and in the modulation of CB1Rs. Anxiety and depression in fact are often diagnosed in MS, and have already been shown to depend on cannabinoid system. We performed biochemical, behavioral and electrophysiological experiments to assess the role of IFN-γ on mood control and on synaptic transmission in mice. Intracerebroventricular delivery of IFN-γ caused a depressive- and anxiety-like behavior in mice, associated with the selective dysfunction of CB1Rs controlling GABA transmission in the striatum. EAE induction was associated with increased striatal expression of IFN-γ, and with CB1R transmission deficits, which were rescued by pharmacological blockade of IFN-γ. IFN-γ was unable to replicate the effects of EAE on excitatory and inhibitory transmission in the striatum, but mimicked the effects of EAE on CB1R function in this brain area. Overall these results indicate that IFN-γ exerts a relevant control on mood, through the modulation of CB1R function. A better understanding of the biological pathways underling the psychological disorders during neuroinflammatory conditions is crucial for developing effective therapeutic strategies.
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Affiliation(s)
- Georgia Mandolesi
- Centro Europeo per la Ricerca sul Cervello (CERC), IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
| | - Silvia Bullitta
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy
| | - Diego Fresegna
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy
| | - Antonietta Gentile
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy
| | - Francesca De Vito
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy
| | - Ettore Dolcetti
- Centro Europeo per la Ricerca sul Cervello (CERC), IRCCS Fondazione Santa Lucia, 00143 Rome, Italy; Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy
| | - Francesca R Rizzo
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy
| | - Georgios Strimpakos
- Institute of Cell Biology and Neurobiology CNR, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Diego Centonze
- Department of Systems Medicine, Tor Vergata University, 00133 Rome, Italy; Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, 86077 Pozzilli, IS, Italy.
| | - Alessandra Musella
- Centro Europeo per la Ricerca sul Cervello (CERC), IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
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Yeh ML, Selvam R, Levine ES. BDNF-induced endocannabinoid release modulates neocortical glutamatergic neurotransmission. Synapse 2017; 71. [PMID: 28164368 DOI: 10.1002/syn.21962] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/23/2017] [Accepted: 02/01/2017] [Indexed: 01/07/2023]
Abstract
Endocannabinoids (eCBs) and neurotrophins, particularly brain-derived neurotrophic factor (BDNF), are potent neuromodulators found throughout the mammalian neocortex. Both eCBs and BDNF play critical roles in many behavioral and neurophysiological processes and are targets for the development of novel therapeutics. The effects of eCBs and BDNF are primarily mediated by the type 1 cannabinoid (CB1) receptor and the trkB tyrosine kinase receptor, respectively. Our laboratory and others have previously established that BDNF potentiates excitatory transmission by enhancing presynaptic glutamate release and modulating NMDA receptors. In contrast, we have shown that BDNF attenuates inhibitory transmission by inducing postsynaptic release of eCBs that act retrogradely to suppress GABA release in layer 2/3 of somatosensory cortex. Here, we hypothesized that BDNF also induces release of eCBs at excitatory synapses, which could have a mitigating or opposing effect on the direct presynaptic effects of BDNF. We found the highest levels of expression of CB1 and trkB and receptors in layers 2/3 and 5. Surprisingly, BDNF did not increase the frequency of spontaneous miniature excitatory postsynaptic currents (mEPSCs) onto layer 5 pyramidal neurons in somatosensory cortex, in contrast to its effects in the hippocampus and visual cortex. However, the effect of BDNF on mEPSC frequency in somatosensory cortex was unmasked by blocking CB1 receptors or disrupting eCB release. Thus, BDNF-trKB signaling regulates glutamate release in the somatosensory cortex via opposing effects, a direct presynaptic enhancement of release probability, and simultaneous postsynaptically-induced eCB release that decreases release probability via presynaptic CB1 receptors.
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Affiliation(s)
- Mason L Yeh
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave, Farmington, CT, 06030
| | - Rajamani Selvam
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave, Farmington, CT, 06030
| | - Eric S Levine
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave, Farmington, CT, 06030
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20
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21
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Gentile A, Fresegna D, Musella A, Sepman H, Bullitta S, De Vito F, Fantozzi R, Usiello A, Maccarrone M, Mercuri NB, Lutz B, Mandolesi G, Centonze D. Interaction between interleukin-1β and type-1 cannabinoid receptor is involved in anxiety-like behavior in experimental autoimmune encephalomyelitis. J Neuroinflammation 2016; 13:231. [PMID: 27589957 PMCID: PMC5009553 DOI: 10.1186/s12974-016-0682-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 08/18/2016] [Indexed: 12/13/2022] Open
Abstract
Background Mood disorders, including anxiety and depression, are frequently diagnosed in multiple sclerosis (MS) patients, even independently of the disabling symptoms associated with the disease. Anatomical, biochemical, and pharmacological evidence indicates that type-1 cannabinoid receptor (CB1R) is implicated in the control of emotional behavior and is modulated during inflammatory neurodegenerative diseases such as MS and experimental autoimmune encephalomyelitis (EAE). Methods We investigated whether CB1R could exert a role in anxiety-like behavior in mice with EAE. We performed behavioral, pharmacological, and electrophysiological experiments to explore the link between central inflammation, mood, and CB1R function in EAE. Results We observed that EAE-induced anxiety was associated with the downregulation of CB1R-mediated control of striatal GABA synaptic transmission and was exacerbated in mice lacking CB1R (CB1R-KO mice). Central blockade of interleukin-1β (IL-1β) reversed the anxiety-like phenotype of EAE mice, an effect associated with the concomitant rescue of dopamine (DA)-regulated spontaneous behavior, and DA-CB1R neurotransmission, leading to the rescue of striatal CB1R sensitivity. Conclusions Overall, results of the present investigation indicate that synaptic dysfunction linked to CB1R is involved in EAE-related anxiety and motivation-based behavior and contribute to clarify the complex neurobiological mechanisms underlying mood disorders associated to MS.
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Affiliation(s)
- Antonietta Gentile
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Diego Fresegna
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Alessandra Musella
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Helena Sepman
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Silvia Bullitta
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Francesca De Vito
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Roberta Fantozzi
- Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, 86077, Pozzilli, IS, Italy
| | - Alessandro Usiello
- Behavioural Neuroscience Laboratory, CEINGE Biotecnologie Avanzate, 80145, Naples, Italy.,Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples (SUN), Caserta, Italy
| | - Mauro Maccarrone
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Centro di Ricerca Integrata, Facoltà di Medicina e Chirurgia, Università Campus Bio-Medico, 00128, Rome, Italy
| | - Nicola B Mercuri
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.,Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy
| | - Beat Lutz
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, 55128, Mainz, Germany
| | - Georgia Mandolesi
- Laboratory of Neuroimmunology and Synaptic Transmission, IRCCS Fondazione Santa Lucia, Centro Europeo di Ricerca sul Cervello (CERC), 00143, Rome, Italy.
| | - Diego Centonze
- Department of Systems Medicine, Tor Vergata University, 00133, Rome, Italy.,Unit of Neurology and of Neurorehabilitation, IRCCS Istituto Neurologico Mediterraneo Neuromed, 86077, Pozzilli, IS, Italy
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Chen SY, Hsu YM, Lin YJ, Huang YC, Chen CJ, Lin WD, Liao WL, Chen YT, Lin WY, Liu YH, Yang JS, Sheu JC, Tsai FJ. Current concepts regarding developmental mechanisms in diabetic retinopathy in Taiwan. Biomedicine (Taipei) 2016; 6:7. [PMID: 27154195 PMCID: PMC4859317 DOI: 10.7603/s40681-016-0007-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 03/31/2016] [Indexed: 12/15/2022] Open
Abstract
Diabetic retinopathy (DR) is one of the most feared complications of diabetes and is a leading cause of acquired blindness in working adults. The prevalence of undiagnosed diabetes in Taiwan is about 4%, and the annual incidence of T2D (Type 2 Diabetes) in Taiwan is 1.8% following the 1985 WHO criteria. Multiple mechanisms have been shown in T2DR with some signaling pathways, including the polyol pathway, PKC pathway, AGEs pathway, and MAPK pathway. However, the cause of vision loss in diabetic retinopathy is complex and remains incompletely understood. Herein, we try to fully understand the new concepts regarding hyperglycemia-induced biochemical pathways contributing to DR pathophysiology. Our work may be able to provide new strategies for the prevention and treatment of diabetic vascular complications.
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Affiliation(s)
- Shih-Yin Chen
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Yuan-Man Hsu
- Department of Biological Science and Technology, China Medical University, 404, Taichung, Taiwan
| | - Ying-Ju Lin
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Yu-Chuen Huang
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Chao-Jung Chen
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Wei-De Lin
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Wen-Lin Liao
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Yng-Tay Chen
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Wei-Yong Lin
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Yu-Huei Liu
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan
| | - Jai-Sing Yang
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan
| | - Jinn-Chyuan Sheu
- Institute of Biomedical Sciences, National Sun Yat-sen University, 804, Kaohsiung, Taiwan
| | - Fuu-Jen Tsai
- Genetics Center, Department of Medical Research, China Medical University Hospital, No. 2 Yuh Der Road, 404, Taichung, Taiwan.
- School of Chinese Medicine, China Medical University, 404, Taichung, Taiwan.
- Department of Medical Genetics, China Medical University Hospital, 404, Taichung, Taiwan.
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23
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Marshall SA, Casachahua JD, Rinker JA, Blose AK, Lysle DT, Thiele TE. IL-1 receptor signaling in the basolateral amygdala modulates binge-like ethanol consumption in male C57BL/6J mice. Brain Behav Immun 2016; 51:258-267. [PMID: 26365025 PMCID: PMC4679505 DOI: 10.1016/j.bbi.2015.09.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 08/26/2015] [Accepted: 09/09/2015] [Indexed: 12/26/2022] Open
Abstract
Proinflammatory cytokines have been implicated in alcohol-induced neurodegeneration, but the role of the neuroimmune system in alcohol related behaviors has only recently come to the forefront. Herein, the effects of binge-like drinking on IL-1β mRNA and immunoreactivity within the amygdala were measured following the "drinking in the dark" (DID) paradigm, a model of binge-like ethanol drinking in C57BL/6J mice. Moreover, the role of IL-1 receptor signaling in the amygdala on ethanol consumption was assessed. Results indicated that a history of binge-like ethanol drinking promoted a significant increase of IL-1β mRNA expression within the amygdala, and immunohistochemistry analyses revealed that the basolateral amygdala (BLA), but not central amygdala (CeA), exhibited significantly increased IL-1β immunoreactivity. However, Fluoro-Jade® C labeling indicated that multiple cycles of the DID paradigm were not sufficient to elicit neuronal death. Bilateral infusions of IL-1 receptor antagonist (IL-1Ra) reduced ethanol consumption when infused into the BLA but not the CeA. These observations were specific to ethanol drinking as the IL-1Ra did not alter either sucrose drinking or open-field locomotor activity. The current findings highlight a specific role for IL-1 receptor signaling in modulating binge-like ethanol consumption and indicate that proinflammatory cytokines can be induced prior to dependence or any evidence of neuronal cell death. These findings provide a framework in which to understand how neuroimmune adaptations may alter ethanol consumption and therein contribute to alcohol abuse.
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Affiliation(s)
- S. Alex Marshall
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599,Bowles Center for Alcohol Studies; The University of North Carolina, Chapel Hill, NC 27599
| | - John D. Casachahua
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599,Bowles Center for Alcohol Studies; The University of North Carolina, Chapel Hill, NC 27599
| | - Jennifer A. Rinker
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599,Bowles Center for Alcohol Studies; The University of North Carolina, Chapel Hill, NC 27599
| | - Allyson K. Blose
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599
| | - Donald T. Lysle
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599,Bowles Center for Alcohol Studies; The University of North Carolina, Chapel Hill, NC 27599
| | - Todd E. Thiele
- Department of Psychology & Neuroscience, The University of North Carolina, Chapel Hill, NC 27599,Bowles Center for Alcohol Studies; The University of North Carolina, Chapel Hill, NC 27599
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24
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Vázquez C, Tolón RM, Grande MT, Caraza M, Moreno M, Koester EC, Villaescusa B, Ruiz-Valdepeñas L, Fernández-Sánchez FJ, Cravatt BF, Hillard CJ, Romero J. Endocannabinoid regulation of amyloid-induced neuroinflammation. Neurobiol Aging 2015; 36:3008-3019. [PMID: 26362942 DOI: 10.1016/j.neurobiolaging.2015.08.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 07/20/2015] [Accepted: 08/04/2015] [Indexed: 12/26/2022]
Abstract
The modulation of endocannabinoid (EC) levels and the activation of cannabinoid receptors are seen as promising therapeutic strategies in a variety of diseases, including Alzheimer's disease (AD). We aimed to evaluate the effect of the pharmacologic and genetic inhibition of anandamide-degrading enzyme in a mouse model of AD (5xFAD). Pharmacologic inhibition of the fatty acid amide hydrolase (FAAH) had little impact on the expression of key enzymes and cytokines and also on the cognitive impairment, plaque deposition, and gliosis in 5xFAD mice. CB1 blockade exacerbated inflammation in this transgenic mouse model of AD. The genetic inactivation of FAAH led to increases in the expression of inflammatory cytokines. At the same time, FAAH-null 5xFAD mice exhibited a behavioral improvement in spatial memory that was independent of the level of anxiety and was not CB1 mediated. Finally, mice lacking FAAH showed diminished soluble amyloid levels, neuritic plaques, and gliosis. These data reinforce the notion of a role for the EC system in neuroinflammation and open new perspectives on the relevance of modulating EC levels in the inflamed brain.
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Affiliation(s)
- Carmen Vázquez
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain
| | - Rosa M Tolón
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain
| | - M Teresa Grande
- School of Biosciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, Spain
| | - Marina Caraza
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain; School of Biosciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, Spain
| | - Marta Moreno
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain
| | - Erin C Koester
- Department of Pharmacology and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Borja Villaescusa
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain
| | - Lourdes Ruiz-Valdepeñas
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain
| | | | - Benjamin F Cravatt
- The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA; Department of Cell Biology, The Scripps Research Institute, La Jolla, CA, USA; Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Cecilia J Hillard
- Department of Pharmacology and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Julián Romero
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Alcorcón, Madrid, Spain; School of Biosciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Madrid, Spain.
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25
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Bileck A, Ferk F, Al-Serori H, Koller VJ, Muqaku B, Haslberger A, Auwärter V, Gerner C, Knasmüller S. Impact of a synthetic cannabinoid (CP-47,497-C8) on protein expression in human cells: evidence for induction of inflammation and DNA damage. Arch Toxicol 2015; 90:1369-82. [PMID: 26194647 DOI: 10.1007/s00204-015-1569-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 07/06/2015] [Indexed: 01/12/2023]
Abstract
Synthetic cannabinoids (SCs) are marketed worldwide as legal surrogates for marihuana. In order to predict potential health effects in consumers and to elucidate the underlying mechanisms of action, we investigated the impact of a representative of the cyclohexylphenols, CP47,497-C8, which binds to both cannabinoid receptors, on protein expression patterns, genomic stability and on induction of inflammatory cytokines in human lymphocytes. After treatment of the cells with the drug, we found pronounced up-regulation of a variety of enzymes in nuclear extracts which are involved in lipid metabolism and inflammatory signaling; some of the identified proteins are also involved in the endogenous synthesis of endocannabinoids. The assumption that the drug causes inflammation is further supported by results obtained in additional experiments with cytosols of LPS-stimulated lymphocytes which showed that the SC induces pro-inflammatory cytokines (IL12p40 and IL-6) as well as TNF-α. Furthermore, the proteome analyses revealed that the drug causes down-regulation of proteins which are involved in DNA repair. This observation provides an explanation for the formation of comets which was seen in single-cell gel electrophoresis assays and for the induction of micronuclei (which reflect structural and numerical chromosomal aberrations) by the drug. These effects were seen in experiments with human lymphocytes which were conducted under identical conditions as the proteome analysis. Taken together, the present findings indicate that the drug (and possibly other structurally related SCs) may cause DNA damage and inflammation in directly exposed cells of consumers.
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Affiliation(s)
- Andrea Bileck
- Faculty of Chemistry, Institute of Analytical Chemistry, University of Vienna, Währingerstr. 38, 1090, Vienna, Austria
| | - Franziska Ferk
- Department of Internal Medicine 1, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8A, 1090, Vienna, Austria
| | - Halh Al-Serori
- Department of Internal Medicine 1, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8A, 1090, Vienna, Austria
| | - Verena J Koller
- Department of Internal Medicine 1, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8A, 1090, Vienna, Austria
| | - Besnik Muqaku
- Faculty of Chemistry, Institute of Analytical Chemistry, University of Vienna, Währingerstr. 38, 1090, Vienna, Austria
| | - Alexander Haslberger
- Department of Nutritional Sciences, University of Vienna, UZA 2/2D541, Althanstrasse 14, 1090, Vienna, Austria
| | - Volker Auwärter
- Institute of Forensic Medicine, University Medical Center Freiburg, Albertstraße 9, 79104, Freiburg, Germany
| | - Christopher Gerner
- Faculty of Chemistry, Institute of Analytical Chemistry, University of Vienna, Währingerstr. 38, 1090, Vienna, Austria
| | - Siegfried Knasmüller
- Department of Internal Medicine 1, Comprehensive Cancer Center, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8A, 1090, Vienna, Austria.
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26
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Benson C, Paylor JW, Tenorio G, Winship I, Baker G, Kerr BJ. Voluntary wheel running delays disease onset and reduces pain hypersensitivity in early experimental autoimmune encephalomyelitis (EAE). Exp Neurol 2015; 271:279-90. [PMID: 26033473 DOI: 10.1016/j.expneurol.2015.05.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 05/23/2015] [Indexed: 01/10/2023]
Abstract
Multiple sclerosis (MS) is classically defined by motor deficits, but it is also associated with the secondary symptoms of pain, depression, and anxiety. Up to this point modifying these secondary symptoms has been difficult. There is evidence that both MS and the animal model experimental autoimmune encephalomyelitis (EAE), commonly used to study the pathophysiology of the disease, can be modulated by exercise. To examine whether limited voluntary wheel running could modulate EAE disease progression and the co-morbid symptoms of pain, mice with EAE were allowed access to running wheels for 1h every day. Allowing only 1h every day of voluntary running led to a significant delay in the onset of clinical signs of the disease. The development of mechanical allodynia was assessed using Von Frey hairs and indicated that wheel running had a modest positive effect on the pain hypersensitivity associated with EAE. These behavioral changes were associated with reduced numbers of cFOS and phosphorylated NR1 positive cells in the dorsal horn of the spinal cord compared to no-run EAE controls. In addition, within the dorsal horn, voluntary wheel running reduced the number of infiltrating CD3(+) T-cells and reduced the overall levels of Iba1 immunoreactivity. Using high performance liquid chromatography (HPLC), we observed that wheel-running lead to significant changes in the spinal cord levels of the antioxidant glutathione. Oxidative stress has separately been shown to contribute to EAE disease progression and neuropathic pain. Together these results indicate that in mice with EAE, voluntary motor activity can delay the onset of clinical signs and reduce pain symptoms associated with the disease.
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Affiliation(s)
- Curtis Benson
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - John W Paylor
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Department of Psychiatry, University of Alberta, Edmonton, AB T6G 2B7, Canada
| | - Gustavo Tenorio
- Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - Ian Winship
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Department of Psychiatry, University of Alberta, Edmonton, AB T6G 2B7, Canada
| | - Glen Baker
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Department of Psychiatry, University of Alberta, Edmonton, AB T6G 2B7, Canada
| | - Bradley J Kerr
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Department of Pharmacology, University of Alberta, Edmonton, AB T6E 2H7, Canada; Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, AB T6G 2G3, Canada.
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27
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Nicholson J, Azim S, Rebecchi MJ, Galbavy W, Feng T, Reinsel R, Rizwan S, Fowler CJ, Benveniste H, Kaczocha M. Leptin levels are negatively correlated with 2-arachidonoylglycerol in the cerebrospinal fluid of patients with osteoarthritis. PLoS One 2015; 10:e0123132. [PMID: 25835291 PMCID: PMC4383333 DOI: 10.1371/journal.pone.0123132] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/16/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND There is compelling evidence in humans that peripheral endocannabinoid signaling is disrupted in obesity. However, little is known about the corresponding central signaling. Here, we have investigated the relationship between gender, leptin, body mass index (BMI) and levels of the endocannabinoids anandamide (AEA) and 2-arachidonoylglycerol (2-AG) in the serum and cerebrospinal fluid (CSF) of primarily overweight to obese patients with osteoarthritis. METHODOLOGY/PRINCIPAL FINDINGS Patients (20 females, 15 males, age range 44-78 years, BMI range 24-42) undergoing total knee arthroplasty for end-stage osteoarthritis were recruited for the study. Endocannabinoids were quantified by liquid chromatography - mass spectrometry. AEA and 2-AG levels in the serum and CSF did not correlate with either age or BMI. However, 2-AG levels in the CSF, but not serum, correlated negatively with CSF leptin levels (Spearman's ρ -0.48, P=0.0076, n=30). No such correlations were observed for AEA and leptin. CONCLUSIONS/SIGNIFICANCE In the patient sample investigated, there is a negative association between 2-AG and leptin levels in the CSF. This is consistent with pre-clinical studies in animals, demonstrating that leptin controls the levels of hypothalamic endocannabinoids that regulate feeding behavior.
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Affiliation(s)
- James Nicholson
- Department of Orthopedic Surgery, Stony Brook University, Stony Brook, New York, United States of America
| | - Syed Azim
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
| | - Mario J. Rebecchi
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
| | - William Galbavy
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
| | - Tian Feng
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York, United States of America
| | - Ruth Reinsel
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
| | - Sabeen Rizwan
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
| | | | - Helene Benveniste
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
- * E-mail: (MK); (HB)
| | - Martin Kaczocha
- Department of Anesthesiology, Stony Brook University, Stony Brook, New York, United States of America
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, United States of America
- * E-mail: (MK); (HB)
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28
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Abstract
The endogenous cannabinoid (endocannabinoid) system is an important regulator of synaptic function. Endocannabinoids acutely modulate inhibitory and excitatory transmission, and also mediate long-term depression at GABAergic and glutamatergic synapses. Typically, endocannabinoid synthesis and release is stimulated by depolarization-induced calcium influx and/or activation of phospholipase-C (PLC) signaling triggered by mGluR activation. Recently it has been shown that brain-derived neurotrophic factor (BDNF) can also induce endocannabinoid release. Although there is growing evidence for cross-talk between BDNF and endocannabinoid signaling, little is known about the functional relevance of these interactions. In the present studies, we examined BDNF - endocannabinoid interactions in regulating activity-dependent long-term depression at inhibitory synapses (iLTD). We found that theta burst stimulation (TBS) in layer 2/3 of mouse somatosensory cortical slices can induce a form of endocannabinoid-mediated iLTD that is independent of metabotropic glutamate receptor (mGluR) activation. This endocannabinoid-dependent iLTD, however, requires endogenous BDNF-trkB signaling, as it is blocked by a trk tyrosine kinase inhibitor and by a trkB receptor antagonist, and also requires activation of diacylglycerol lipase (DAG-lipase, DGL). In addition, endocannabinoid-mediated iLTD can be induced by combining a subthreshold concentration of exogenous BDNF with weak TBS stimulation that by itself is insufficient to induce iLTD. Taken together, our results suggest that TBS can induce the release of endogenous BDNF, which triggers DGL-dependent endocannabinoid mobilization and cannabinoid receptor-dependent iLTD at layer 2/3 cortical synapses.
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29
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Zajkowska ZE, Englund A, Zunszain PA. Towards a personalized treatment in depression: endocannabinoids, inflammation and stress response. Pharmacogenomics 2014; 15:687-98. [PMID: 24798725 DOI: 10.2217/pgs.14.40] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The complex nature of depression is mirrored by difficulties in tailoring its treatment. Key underlying mechanisms of this mental disorder include elevated inflammation and a dysregulated hypothalamic-pituitary-adrenal (HPA) axis. More recently, the endocannabinoid system has been proposed as another important component in the pathogenesis of depression, and strong evidence suggests that all three systems communicate with each other. A growing number of genetic studies have investigated polymorphisms in depression in each of these systems separately. However, no study to date has looked at these genes in conjunction. In this article we will review the crosstalk between the endocannabinoid system, immune system and HPA axis; and discuss the evidence of gene polymorphisms and their relation to the risk of depression and its treatment. We propose future directions where genes of these three systems are considered from a joint perspective to improve prediction of treatment response, taking into account potentially overlooked genetic variations.
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Affiliation(s)
- Zuzanna E Zajkowska
- Section of Stress, Psychiatry & Immunology, Department of Psychological Medicine, Institute of Psychiatry, King's College London, 125 Coldharbour Lane, London SE5 9NU, UK
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30
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Vezzani A, Viviani B. Neuromodulatory properties of inflammatory cytokines and their impact on neuronal excitability. Neuropharmacology 2014; 96:70-82. [PMID: 25445483 DOI: 10.1016/j.neuropharm.2014.10.027] [Citation(s) in RCA: 413] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/24/2014] [Accepted: 10/29/2014] [Indexed: 01/01/2023]
Abstract
Increasing evidence underlines that prototypical inflammatory cytokines (IL-1β, TNF-α and IL-6) either synthesized in the central (CNS) or peripheral nervous system (PNS) by resident cells, or imported by immune blood cells, are involved in several pathophysiological functions, including an unexpected impact on synaptic transmission and neuronal excitability. This review describes these unconventional neuromodulatory properties of cytokines, that are distinct from their classical action as effector molecules of the immune system. In addition to the role of cytokines in brain physiology, we report evidence that dysregulation of their biosynthesis and cellular release, or alterations in receptor-mediated intracellular pathways in target cells, leads to neuronal cell dysfunction and modifications in neuronal network excitability. As a consequence, targeting of these cytokines, and related signalling molecules, is considered a novel option for the development of therapies in various CNS or PNS disorders associated with an inflammatory component. This article is part of a Special Issue entitled 'Neuroimmunology and Synaptic Function'.
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Affiliation(s)
- Annamaria Vezzani
- IRCCS-Istituto di Ricerche Farmacologiche "Mario Negri", Department of Neuroscience, Milano, Italy.
| | - Barbara Viviani
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milano, Italy.
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31
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Rossi S, Motta C, Musella A, Centonze D. The interplay between inflammatory cytokines and the endocannabinoid system in the regulation of synaptic transmission. Neuropharmacology 2014; 96:105-12. [PMID: 25268960 DOI: 10.1016/j.neuropharm.2014.09.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 09/15/2014] [Accepted: 09/16/2014] [Indexed: 12/14/2022]
Abstract
Excessive glutamate-mediated synaptic transmission and secondary excitotoxicity have been proposed as key determinants of neurodegeneration in many neurological diseases. Soluble mediators of inflammation have recently gained attention owing to their ability to enhance glutamate transmission and affect synaptic sensitivity to neurotransmitters. In the complex crosstalk between soluble immunoactive molecules and synapses, the endocannabinoid system (ECS) plays a central role, exerting an indirect neuroprotective action by inhibiting cytokine-dependent synaptic alterations, and a direct neuroprotective effect by limiting glutamate transmission and excitotoxic damage. On the other hand, the endocannabinoid (eCB)-mediated control of synaptic transmission is altered by proinflammatory cytokines with consequent effects in central nervous system (CNS) disorders. In this review, we summarize the interactions, at the pre- and postsynaptic level, between major inflammatory cytokines and the ECS. In addition, the behavioral and clinical consequences of the modulation of synaptic transmission during neuroinflammation are discussed. This article is part of a Special Issue entitled 'Neuroimmunology and Synaptic Function'.
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Affiliation(s)
- Silvia Rossi
- Clinica Neurologica, Dipartimento di Medicina dei Sistemi, Università Tor Vergata, 00133 Rome, Italy; Fondazione Santa Lucia/Centro Europeo per la Ricerca sul Cervello (CERC), 00143 Rome, Italy
| | - Caterina Motta
- Clinica Neurologica, Dipartimento di Medicina dei Sistemi, Università Tor Vergata, 00133 Rome, Italy; Fondazione Santa Lucia/Centro Europeo per la Ricerca sul Cervello (CERC), 00143 Rome, Italy
| | - Alessandra Musella
- Clinica Neurologica, Dipartimento di Medicina dei Sistemi, Università Tor Vergata, 00133 Rome, Italy; Fondazione Santa Lucia/Centro Europeo per la Ricerca sul Cervello (CERC), 00143 Rome, Italy
| | - Diego Centonze
- Clinica Neurologica, Dipartimento di Medicina dei Sistemi, Università Tor Vergata, 00133 Rome, Italy; Fondazione Santa Lucia/Centro Europeo per la Ricerca sul Cervello (CERC), 00143 Rome, Italy.
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32
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Neuroimmmune interactions of cannabinoids in neurogenesis: focus on interleukin-1β (IL-1β) signalling. Biochem Soc Trans 2013; 41:1577-82. [DOI: 10.1042/bst20130198] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Neuroimmune networks and the brain endocannabinoid system contribute to the maintenance of neurogenesis. Activation of cannabinoid receptors suppresses chronic inflammatory responses through the attenuation of pro-inflammatory mediators. Moreover, the endocannabinoid system directs cell fate specification of NSCs (neural stem cells) in the CNS (central nervous sytem). The aim of our work is to understand better the relationship between the endocannabinoid and the IL-1β (interleukin-1β) associated signalling pathways and NSC biology, in order to develop therapeutical strategies on CNS diseases that may facilitate brain repair. NSCs express functional CB1 and CB2 cannabinoid receptors, DAGLα (diacylglycerol lipase α) and the NSC markers SOX-2 and nestin. We have investigated the role of CB1 and CB2 cannabinoid receptors in the control of NSC proliferation and in the release of immunomodulators [IL-1β and IL-1Ra (IL-1 receptor antagonist)] that control NSC fate decisions. Pharmacological blockade of CB1 and/or CB2 cannabinoid receptors abolish or decrease NSC proliferation, indicating a critical role for both CB1 and CB2 receptors in the proliferation of NSC via IL-1 signalling pathways. Thus the endocannabinoid system, which has neuroprotective and immunomodulatory actions mediated by IL-1 signalling cascades in the brain, could assist the process of proliferation and differentiation of embryonic or adult NSCs, and this may be of therapeutic interest in the emerging field of brain repair.
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