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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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Barker DJ, Zhang S, Wang H, Estrin DJ, Miranda-Barrientos J, Liu B, Kulkarni RJ, de Deus JL, Morales M. Lateral preoptic area glutamate neurons relay nociceptive information to the ventral tegmental area. Cell Rep 2023; 42:113029. [PMID: 37632750 PMCID: PMC10584074 DOI: 10.1016/j.celrep.2023.113029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/28/2023] [Accepted: 08/09/2023] [Indexed: 08/28/2023] Open
Abstract
The ventral tegmental area (VTA) has been proposed to play a role in pain, but the brain structures modulating VTA activity in response to nociceptive stimuli remain unclear. Here, we demonstrate that the lateral preoptic area (LPO) glutamate neurons relay nociceptive information to the VTA. These LPO glutamatergic neurons synapsing on VTA neurons respond to nociceptive stimulation and conditioned stimuli predicting nociceptive stimulation and also mediate aversion. In contrast, LPO GABA neurons synapsing in the VTA mediate reward. By ultrastructural quantitative synaptic analysis, ex vivo electrophysiology, and functional neuroanatomy we identify a complex circuitry between LPO glutamatergic and GABAergic neurons and VTA dopaminergic, GABAergic, and glutamatergic neurons. We conclude that LPO glutamatergic neurons play a causal role in the processing of nociceptive stimuli and in relaying information about nociceptive stimuli. The pathway from LPO glutamatergic neurons to the VTA represents an unpredicted interface between peripheral nociceptive information and the limbic system.
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Affiliation(s)
- David J Barker
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Shiliang Zhang
- Confocal and Electron Microscopy Core, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Huiling Wang
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - David J Estrin
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Jorge Miranda-Barrientos
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Bing Liu
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Rucha J Kulkarni
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Junia Lara de Deus
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA
| | - Marisela Morales
- Integrative Neuroscience Branch, Neuronal Networks Section, National Institute on Drug Abuse Intramural Research Program, Baltimore, MD 21224, USA.
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Pautrat A, Al Tannir R, Pernet-Gallay K, Soutrenon R, Vendramini E, Sinniger V, Overton PG, David O, Coizet V. Altered parabrachial nucleus nociceptive processing may underlie central pain in Parkinson's disease. NPJ Parkinsons Dis 2023; 9:78. [PMID: 37236965 DOI: 10.1038/s41531-023-00516-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
The presence of central neuropathic pain in Parkinson's disease suggests that the brain circuits that allow us to process pain could be dysfunctional in the disorder. However, there is to date no clear pathophysiological mechanism to explain these symptoms. In this work, we present evidence that the dysfunction of the subthalamic nucleus and/or substantia nigra pars reticulata may impact nociceptive processing in the parabrachial nucleus (PBN), a low level primary nociceptive structure in the brainstem, and induce a cellular and molecular neuro-adaptation in this structure. In rat models of Parkinson's disease with a partial dopaminergic lesion in the substantia nigra compacta, we found that the substantia nigra reticulata showed enhanced nociceptive responses. Such responses were less impacted in the subthalamic nucleus. A total dopaminergic lesion produced an increase in the nociceptive responses as well as an increase of the firing rate in both structures. In the PBN, inhibited nociceptive responses and increased expression of GABAA receptors were found following a total dopaminergic lesion. However, neuro-adaptations at the level of dendritic spine density and post-synaptic density were found in both dopaminergic lesion groups. These results suggest that the molecular changes within the PBN following a larger dopaminergic lesion, such as increased GABAA expression, is a key mechanism to produce nociceptive processing impairment, whilst other changes may protect function after smaller dopaminergic lesions. We also propose that these neuro-adaptations follow increased inhibitory tone from the substantia nigra pars reticulata and may represent the mechanism generating central neuropathic pain in Parkinson's disease.
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Affiliation(s)
- Arnaud Pautrat
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Racha Al Tannir
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Karin Pernet-Gallay
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Rémi Soutrenon
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Estelle Vendramini
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Valérie Sinniger
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
| | - Paul G Overton
- Department of Psychology, University of Sheffield, Sheffield, UK
| | - Olivier David
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France
- Aix-Marseille Université, Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes (INS) UMR1106, Marseille, 13005, France
| | - Véronique Coizet
- Université Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000, Grenoble, France.
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Blockade of the orexin receptors in the ventral tegmental area could attenuate the stress-induced analgesia: A behavioral and molecular study. Prog Neuropsychopharmacol Biol Psychiatry 2023; 120:110639. [PMID: 36116673 DOI: 10.1016/j.pnpbp.2022.110639] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/08/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022]
Abstract
Exposure to stressful stimuli induces various physiological and behavioral responses, affects pain perception, and alters gene expression. Stress elicits an analgesic effect in laboratory animals, termed the "stress-induced analgesia" (SIA). Orexin neuropeptides, processed from pre-pro-orexin in the hypothalamus, release during stress and are known to be antinociceptive. The current study examined the modulatory role of the ventral tegmental area (VTA) orexinergic system in the restraint SIA and extracellular signal-regulated kinase (ERK) activation in the nucleus accumbens (NAc). Adult male Wistar rats were subjected to intra-VTA injection of orexin-1 and -2 receptor antagonists (SB334867 and TCS OX2 29; 1, 3, 10, and 30 nmol/0.3 μl, respectively) five min before a 3-h period of exposure to restraint stress (RS). Western blot analysis was also used to assess the levels of ERK and phosphorylated ERK (p-ERK) in the NAc tissues. RS exposure produced an analgesic response to the thermal pain model (Tail-flick test). RS-induced antinociception was inhibited by intra-VTA administration of SB334867 and TCS OX2 29. Moreover, in the molecular study, exposure to forced swim stress (FSS) and RS significantly enhanced the p-ERK/ERK ratio. Blockade of both orexin receptors diminished the p-ERK/ERK ratio, but this decrease was significant only in the FSS group of animals that received TCS OX2 29. Collectively, the present findings suggested the functional roles of intra-VTA orexin receptors and ERK signaling in the SIA.
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Tokhi A, Ahmed Z, Arif M, Rehman NU, Sheibani V, Sewell RDE, Rauf K. Effects of 1-methyl-1, 2, 3, 4-tetrahydroisoquinoline on a diabetic neuropathic pain model. Front Pharmacol 2023; 14:1128496. [PMID: 37033637 PMCID: PMC10073420 DOI: 10.3389/fphar.2023.1128496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/13/2023] [Indexed: 04/11/2023] Open
Abstract
Background: Neuropathy is a prevalent and debilitating complication of poorly managed diabetes, contributing towards poor quality of life, amputation risk, and increased mortality. The available therapies for diabetic neuropathic pain (DPN) have limitations in terms of efficacy, tolerability and patient compliance. Dysfunction in the peripheral and central monoaminergic system has been evidenced in various types of neuropathic and acute pain. The objective of the present study was to investigate 1-methyl 1, 2, 3, 4-tetrahydroisoquinoline (1MeTIQ), an endogenous amine found in human brain with a known neuroprotective profile, in a model of streptozotocin (STZ) induced neuropathic pain. Methods: Diabetic neuropathy in male BALB/c mice was induced by intraperitoneal injection of a single dose of STZ (200 mg/kg). Upon development of DPN after 4 weeks, mice were investigated for mechanical allodynia (von Frey filament pressure test) and thermal hyperalgesia (tail immersion test). Ondansetron (1.0 mg/kg i.p.), naloxone (3.0 mg/kg i.p.) and yohimbine (2.0 mg/kg i.p.) were used to elucidate the possible mechanism involved. Postmortem frontal cortical, striatal and hippocampal tissues were dissected and evaluated for changes in levels of dopamine, noradrenaline and serotonin using High-Performance Liquid Chromatography (HPLC) with UV detection. Results: Acute administration of 1MeTIQ (15-45 mg/kg i.p.) reversed streptozotocin-induced diabetic neuropathic static mechanical allodynia (von Frey filament pressure test) and thermal hyperalgesia (tail immersion test), these outcomes being comparable to standard gabapentin. Furthermore, HPLC analysis revealed that STZ-diabetic mice expressed lower concentrations of serotonin in all three brain regions examined, while dopamine was diminished in the striatum and 1MeTIQ reversed all these neurotransmitter modifications. These findings suggest that the antihyperalgesic/antiallodynic activity of 1MeTIQ may be mediated in part via supraspinal opioidergic and monoaminergic modulation since they were naloxone, yohimbine and ondansetron reversible. Conclusion: It was also concluded that acute treatment with 1MeTIQ ameliorated STZ-induced mechanical allodynia and thermal hyperalgesia and restored brain regionally altered serotonin and dopamine concentrations which signify a potential for 1MeTIQ in the management of DPN.
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Affiliation(s)
- Ahmed Tokhi
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Zainab Ahmed
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Mehreen Arif
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Naeem Ur Rehman
- Faculty of Pharmacy, Gomal University, Dera Ismail Khan, Pakistan
| | - Vahid Sheibani
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Robert D. E. Sewell
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom
| | - Khalid Rauf
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad, Pakistan
- *Correspondence: Khalid Rauf,
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Elshennawy M, Ouachikh O, Aissouni Y, Youssef S, Zaki SS, Durif F, Hafidi A. Behavioral, Cellular and Molecular Responses to Cold and Mechanical Stimuli in Rats with Bilateral Dopamine Depletion in the Mesencephalic Dopaminergic Neurons. Neuroscience 2021; 479:107-124. [PMID: 34748858 DOI: 10.1016/j.neuroscience.2021.10.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 01/10/2023]
Abstract
Pain is the major non-motor symptom in Parkinson's disease (PD). Preclinical studies have mostly investigated mechanical pain by considering the decrease in a nociceptive threshold. Only a few studies have focused on thermal pain in animal models of PD. Therefore, the goal of this study was to assess the thermal nociceptive behavior of rats subjected to 6-hydroxydopamine (6-OHDA) administration, which constitutes an animal model of PD. Thermal plate investigation demonstrated significant thermal sensitivity to cold temperatures of 10 °C and 15 °C, and not to higher temperatures, in 6-OHDA-lesioned rats when compared with sham. 6-OHDA-lesioned rats also showed cold allodynia as demonstrated by a significant difference in the number of flinches, latency and reaction time to acetone stimulus. Ropinirole administration, a dopamine receptor 2 (D2R) agonist, blocked the acetone-induced cold allodynia in 6-OHDA-lesioned rats. In addition, mechanical hypersensitivity and static allodynia, as demonstrated by a significant difference in the vocalization threshold and pain score respectively, were noticed in 6-OHDA-lesioned rats. Acetone stimulus induced a significant increase in extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) phosphorylation, a pain process molecular marker, in the spinal dorsal horn (SDH), the insular and cingulate cortices in 6-OHDA-lesioned rats when compared to sham. In 6-OHDA-lesioned rats, there was a significant augmentation in the expression of both protein kinase C gamma (PKCγ) and glutamate decarboxylase 67 (GAD67) in the SDH. This highlighted an increase in excitation and a decrease in inhibition in the SDH. Overall, the present study demonstrated a clear cold thermal hypersensitivity, in addition to a mechanical one, in 6-OHDA-lesioned rats.
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Affiliation(s)
- Mennatallah Elshennawy
- Anatomy and Embryology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt; Université Clermont Auvergne, CHU, CNRS, Clermont Auvergne INP, Institut Pascal, 63000 Clermont-Ferrand, France.
| | - Omar Ouachikh
- Université Clermont Auvergne, CHU, CNRS, Clermont Auvergne INP, Institut Pascal, 63000 Clermont-Ferrand, France.
| | - Youssef Aissouni
- Université Clermont Auvergne, INSERM, NeuroDol U1107, 63000 Clermont-Ferrand, France.
| | - Shahira Youssef
- Anatomy and Embryology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
| | - Shahira S Zaki
- Anatomy and Embryology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
| | - Franck Durif
- Université Clermont Auvergne, CHU, CNRS, Clermont Auvergne INP, Institut Pascal, 63000 Clermont-Ferrand, France.
| | - Aziz Hafidi
- Université Clermont Auvergne, CHU, CNRS, Clermont Auvergne INP, Institut Pascal, 63000 Clermont-Ferrand, France.
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The Role of Mesostriatal Dopamine System and Corticostriatal Glutamatergic Transmission in Chronic Pain. Brain Sci 2021; 11:brainsci11101311. [PMID: 34679376 PMCID: PMC8533867 DOI: 10.3390/brainsci11101311] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 12/21/2022] Open
Abstract
There is increasing recognition of the involvement of the nigrostriatal and mesolimbic dopamine systems in the modulation of chronic pain. The first part of the present article reviews the evidence indicating that dopamine exerts analgesic effects during persistent pain by stimulating the D2 receptors in the dorsal striatum and nucleus accumbens (NAc). Thereby, dopamine inhibits striatal output via the D2 receptor-expressing medium spiny neurons (D2-MSN). Dopaminergic neurotransmission in the mesostriatal pathways is hampered in chronic pain states and this alteration maintains and exacerbates pain. The second part of this article focuses on the glutamatergic inputs from the medial prefrontal cortex to the NAc, their activity changes in chronic pain, and their role in pain modulation. Finally, interactions between dopaminergic and glutamatergic inputs to the D2-MSN are considered in the context of persistent pain. Studies using novel techniques indicate that pain is regulated oppositely by two independent dopaminergic circuits linking separate parts of the ventral tegmental area and of the NAc, which also interact with distinct regions of the medial prefrontal cortex.
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Cintra RR, Lins LCRF, Medeiros KAAL, Souza MF, Gois AM, Bispo JMM, Melo MS, Leal PC, Meurer YSR, Ribeiro AM, Silva RH, Marchioro M, Santos JR. Nociception alterations precede motor symptoms in a progressive model of parkinsonism induced by reserpine in middle-aged rats. Brain Res Bull 2021; 171:1-9. [PMID: 33675933 DOI: 10.1016/j.brainresbull.2021.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 10/22/2022]
Abstract
Nociception alterations are frequent non-motor symptoms of the prodromal phase of Parkinson's disease (PD). The period for the onset of symptoms and the pathophysiological mechanisms underlying these alterations remain unclear. We investigated the course of nociception alterations in a progressive model of parkinsonism induced by reserpine (RES) in rats. Male Wistar rats (6-7 months) received 5 or 10 subcutaneous injections of RES (0.1 mg/kg) or vehicle daily for 20 days. Motor evaluation and nociceptive assessment were performed throughout the treatment. At the end of the treatment rats were euthanized, the brains removed and processed for immunohistochemical analysis (TH and c-Fos). The RES-treated rats exhibited an increased nociceptive response to mechanical and chemical stimulation in the electronic von Frey and formalin tests, respectively. Moreover, these alterations preceded the motor impairment observed in the catalepsy test. In addition, the RES treatment reduced the TH-immunoreactivity in the ventral tegmental area (VTA) and increased the c-Fos expression in the ventral-lateral periaqueductal gray (vlPAG), rostral ventral medulla (RVM) and dorsal raphe nucleus (DRN) after noxious stimuli induced by formalin. Taken together, our results reinforce that nociceptive changes are one of the early signs of PD and monoamine depletion in basal ganglia can be involved in the abnormal processing of nociceptive information in PD.
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Affiliation(s)
- Rachel R Cintra
- Laboratory of Neurophysiology, Department of Physiology, Federal University of Sergipe, São Cristovão, SE, Brazil
| | - Lívia C R F Lins
- Department of Health Education, Federal University of Sergipe, Lagarto, SE, Brazil
| | - Katty A A L Medeiros
- Laboratory of Neurophysiology, Department of Physiology, Federal University of Sergipe, São Cristovão, SE, Brazil
| | - Marina F Souza
- Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Auderlan M Gois
- Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - José M M Bispo
- Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Mônica S Melo
- Department of Health Education, Federal University of Sergipe, Lagarto, SE, Brazil
| | - Pollyana C Leal
- Post-graduate Program of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil
| | - Ywlliane S R Meurer
- Laboratory of Behavioral and Molecular Neuroscience, Department of Pharmacology, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Alessandra M Ribeiro
- Laboratory of Neuroscience and Bioprospecting of Natural Products, Department of Biosciences, Federal University of São Paulo, Santos, SP, Brazil
| | - Regina H Silva
- Laboratory of Behavioral and Molecular Neuroscience, Department of Pharmacology, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Murilo Marchioro
- Laboratory of Neurophysiology, Department of Physiology, Federal University of Sergipe, São Cristovão, SE, Brazil
| | - José R Santos
- Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil.
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Faivre F, Sánchez-Catalán MJ, Dovero S, Bido S, Joshi A, Bezard E, Barrot M. Ablation of the tail of the ventral tegmental area compensates symptoms in an experimental model of Parkinson's disease. Neurobiol Dis 2020; 139:104818. [DOI: 10.1016/j.nbd.2020.104818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/31/2020] [Accepted: 02/18/2020] [Indexed: 12/22/2022] Open
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10
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Neuropathic Pain Dysregulates Gene Expression of the Forebrain Opioid and Dopamine Systems. Neurotox Res 2020; 37:800-814. [PMID: 32026358 PMCID: PMC7085470 DOI: 10.1007/s12640-020-00166-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 01/17/2020] [Accepted: 01/22/2020] [Indexed: 12/23/2022]
Abstract
Disturbances in the function of the mesostriatal dopamine system may contribute to the development and maintenance of chronic pain, including its sensory and emotional/cognitive aspects. In the present study, we assessed the influence of chronic constriction injury (CCI) of the sciatic nerve on the expression of genes coding for dopamine and opioid receptors as well as opioid propeptides in the mouse mesostriatal system, particularly in the nucleus accumbens. We demonstrated bilateral increases in mRNA levels of the dopamine D1 and D2 receptors (the latter accompanied by elevated protein level), opioid propeptides proenkephalin and prodynorphin, as well as delta and kappa (but not mu) opioid receptors in the nucleus accumbens at 7 to 14 days after CCI. These results show that CCI-induced neuropathic pain is accompanied by a major transcriptional dysregulation of molecules involved in dopaminergic and opioidergic signaling in the striatum/nucleus accumbens. Possible functional consequences of these changes include opposite effects of upregulated enkephalin/delta opioid receptor signaling vs. dynorphin/kappa opioid receptor signaling, with the former most likely having an analgesic effect and the latter exacerbating pain and contributing to pain-related negative emotional states.
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Romero-Sánchez HA, Mendieta L, Austrich-Olivares AM, Garza-Mouriño G, Benitez-Diaz Mirón M, Coen A, Godínez-Chaparro B. Unilateral lesion of the nigroestriatal pathway with 6-OHDA induced allodynia and hyperalgesia reverted by pramipexol in rats. Eur J Pharmacol 2020; 869:172814. [DOI: 10.1016/j.ejphar.2019.172814] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/05/2019] [Accepted: 11/15/2019] [Indexed: 12/25/2022]
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12
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Li M, Zhu M, Xu Q, Ding F, Tian Y, Zhang M. Sensation of TRPV1 via 5-hydroxytryptamine signaling modulates pain hypersensitivity in a 6-hydroxydopamine induced mice model of Parkinson’s disease. Biochem Biophys Res Commun 2020; 521:868-873. [DOI: 10.1016/j.bbrc.2019.10.204] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 10/31/2019] [Indexed: 12/24/2022]
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13
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Huang S, Borgland SL, Zamponi GW. Peripheral nerve injury-induced alterations in VTA neuron firing properties. Mol Brain 2019; 12:89. [PMID: 31685030 PMCID: PMC6827252 DOI: 10.1186/s13041-019-0511-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/10/2019] [Indexed: 11/28/2022] Open
Abstract
The ventral tegmental area (VTA) is one of the main brain regions harboring dopaminergic (DA) neurons, and plays important roles in reinforcement and motivation. Recent studies have indicated that DA neurons not only respond to rewarding stimuli, but also to noxious stimuli. Furthermore, VTA DA neurons undergo plasticity during chronic pain. Lateral and medial VTA neurons project to different brain areas, and have been characterized via their distinct electrophysiological properties. In this study, we characterized electrophysiological properties of lateral and medial VTA DA neurons using DAT-cre reporter mice, and examined their plasticity during neuropathic pain states. We observed various DA subpopulations in both the lateral and medial VTA, as defined by action potential firing patterns, independently of synaptic inputs. Our results demonstrated that lateral and medial VTA DA neurons undergo differential plasticity after peripheral nerve injury that leads to neuropathic pain. However, these changes only reside in specific DA subpopulations. This study suggests that lateral and medial VTA DA neurons are differentially affected during neuropathic pain conditions, and emphasizes the importance of subpopulation specificity when targeting VTA DA neurons for treatment of neuropathic pain.
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Affiliation(s)
- Shuo Huang
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, Calgary, AB, Canada.,Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Stephanie L Borgland
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, Calgary, AB, Canada
| | - Gerald W Zamponi
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, Calgary, AB, Canada. .,Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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14
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Marie N, Canestrelli C, Noble F. Role of pharmacokinetic and pharmacodynamic parameters in neuroadaptations induced by drugs of abuse, with a focus on opioids and psychostimulants. Neurosci Biobehav Rev 2019; 106:217-226. [DOI: 10.1016/j.neubiorev.2018.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/29/2018] [Accepted: 06/06/2018] [Indexed: 01/16/2023]
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15
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16
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Khodayari S, Ghaderi Pakdel F, Shahabi P, Naderi S. Acute Tramadol-Induced Cellular Tolerance and Dependence of Ventral Tegmental Area Dopaminergic Neurons: An In Vivo Electrophysiological Study. Basic Clin Neurosci 2019; 10:209-224. [PMID: 31462976 PMCID: PMC6712631 DOI: 10.32598/bcn.9.10.180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/25/2017] [Accepted: 04/30/2018] [Indexed: 01/28/2023] Open
Abstract
Introduction Ventral Tegmental Area (VTA) is a core region of the brainstem that contributes to different vital bio-responses such as pain and addiction. The Dopaminergic (DA) cellular content of VTA has major roles in different functions. This study aims to evaluate the cellular effect of tramadol on the putative VTA-DA neurons. Methods Wistar rats were assigned into three groups of control, sham, and tramadol-treated. The animals were anesthetized and their VTA-DA neuronal activity was obtained under controlled stereotaxic operation. The firing rate of the neurons was extracted according to principal component analysis by Igor Pro software and analyzed statistically considering P<0.05 as significant. Tramadol (20 mg/kg) was infused intraperitoneally. Results Overall, 121 putative VTA-DA neurons were isolated from all groups. In tramadol-treated rats, the inhibition of the neuronal firing was proposed as tolerance and the excitation period as dependence or withdrawal. The Mean±SD inhibition time lasted up to 50.34±10.17 minutes and 31% of neurons stopped firing and silenced after 24±3 min on average but the remaining neurons lowered their firing up to 43% to 67% of their baseline firing. All neurons showed the excitation period, lasted about 56.12±15.30 min, and the firing of neurons increased from 176% to 244% of their baseline or pre-injection period. Conclusion The tolerance and dependence effects of tramadol are related to the changes in the neuronal firing rate at the putative VTA-DA neurons. The acute injection of tramadol can initiate neuroadaptation on the opioid and non-opioid neurotransmission to mediate these effects.
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Affiliation(s)
- Shabnam Khodayari
- Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Firouz Ghaderi Pakdel
- Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran.,Department of Physiology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Parviz Shahabi
- Neuroscience Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Somayyeh Naderi
- Danesh Pey Hadi Co., Health Technology Incubator Center, Urmia University of Medical Sciences, Urmia, Iran
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17
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Mlost J, Wąsik A, Starowicz K. Role of endocannabinoid system in dopamine signalling within the reward circuits affected by chronic pain. Pharmacol Res 2019; 143:40-47. [PMID: 30831242 DOI: 10.1016/j.phrs.2019.02.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 12/18/2022]
Abstract
The association between chronic pain, depression and anxiety has gained particular attention due to high rates of comorbidity. Recent data demonstrated that the mesolimbic reward circuitry is involved in the pathology of chronic pain. Interestingly, the mesolimbic reward circuit participates both in pain perception and in pain relief. The endocannabinoid system (ECS) has emerged as a highly relevant player involved in both pain perception and reward processing. Targeting ECS could become a novel treatment strategy for chronic pain patients. However, little is known about the underlying mechanisms of action of cannabinoids at the intersection of neurochemical changes in reward circuits and chronic pain. Because understanding the benefits and risks of cannabinoids is paramount, the aim of this review is to evaluate the state-of-art knowledge about the involvement of the ECS in dopamine signalling within the reward circuits affected by chronic pain.
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Affiliation(s)
- Jakub Mlost
- Institute of Pharmacology, Department of Neurochemistry, Polish Academy of Sciences, Kraków, Poland
| | - Agnieszka Wąsik
- Institute of Pharmacology, Department of Neurochemistry, Polish Academy of Sciences, Kraków, Poland
| | - Katarzyna Starowicz
- Institute of Pharmacology, Department of Neurochemistry, Polish Academy of Sciences, Kraków, Poland.
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18
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Domenici RA, Campos ACP, Maciel ST, Berzuino MB, Hernandes MS, Fonoff ET, Pagano RL. Parkinson's disease and pain: Modulation of nociceptive circuitry in a rat model of nigrostriatal lesion. Exp Neurol 2019; 315:72-81. [PMID: 30772369 DOI: 10.1016/j.expneurol.2019.02.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/04/2019] [Accepted: 02/11/2019] [Indexed: 12/14/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder that causes progressive dysfunction of dopaminergic and non-dopaminergic neurons, generating motor and nonmotor signs and symptoms. Pain is reported as the most bothersome nonmotor symptom in PD; however, pain remains overlooked and poorly understood. In this study, we evaluated the nociceptive behavior and the descending analgesia circuitry in a rat model of PD. Three independent experiments were performed to investigate: i) thermal nociceptive behavior; ii) mechanical nociceptive behavior and dopaminergic repositioning; and iii) modulation of the pain control circuitry. The rat model of PD, induced by unilateral striatal 6-hydroxydopamine (6-OHDA), did not interfere with thermal nociceptive responses; however, the mechanical nociceptive threshold was decreased bilaterally compared to that of naive or striatal saline-injected rats. This response was reversed by apomorphine or levodopa treatment. Striatal 6-OHDA induced motor impairments and reduced dopaminergic neuron immunolabeling as well as the pattern of neuronal activation (c-Fos) in the substantia nigra ipsilateral (IPL) to the lesion. In the midbrain periaqueductal gray (PAG), 6-OHDA-induced lesion increased IPL and decreased contralateral PAG GABAergic labeling compared to control. In the dorsal horn of the spinal cord, lesioned rats showed bilateral inhibition of enkephalin and μ-opioid receptor labeling. Taken together, we demonstrated that the unilateral 6-OHDA-induced PD model induces bilateral mechanical hypernociception, which is reversed by dopamine restoration, changes in the PAG circuitry, and inhibition of spinal opioidergic regulation, probably due to impaired descending analgesic control. A better understanding of pain mechanisms in PD patients is critical for developing better therapeutic strategies to improve their quality of life.
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Affiliation(s)
- Roberta A Domenici
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil
| | | | - Soraya T Maciel
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil
| | - Miriã B Berzuino
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil
| | - Marina S Hernandes
- Department of Medicine, Emory University, Atlanta, GA, United States of America
| | - Erich T Fonoff
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil; Division of Functional Neurosurgery, Department of Neurology, University of São Paulo School of Medicine, São Paulo, SP, Brazil
| | - Rosana L Pagano
- Laboratory of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil.
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19
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Zhang Q, Yu S, Wang Y, Wang M, Yang Y, Wei W, Guo X, Zeng F, Liang F, Yang J. Abnormal reward system network in primary dysmenorrhea. Mol Pain 2019; 15:1744806919862096. [PMID: 31286840 PMCID: PMC6616063 DOI: 10.1177/1744806919862096] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 04/23/2019] [Accepted: 06/11/2019] [Indexed: 12/27/2022] Open
Abstract
Neuroimaging studies have demonstrated that reward system is associated with chronic pain diseases. In addition, previous studies have also demonstrated abnormal functional and structural brain regions in primary dysmenorrhea. However, the relation of reward system and primary dysmenorrhea is still unknown. Using the resting state functional magnetic resonance imaging, we aimed to investigate the functional connectivity changes of reward system during periovulatory phase in primary dysmenorrhea. Forty-one primary dysmenorrhea patients and 39 matched female healthy controls participated in this study. Compared to healthy controls, primary dysmenorrhea patients showed decreased connectivity of left nucleus accumbens with the bilateral anterior insula and the left amygdala and decreased connectivity of right nucleus accumbens with ventral tegmental area, the left hippocampus, the right orbital frontal cortex, and the right anterior insula. In addition, the decreased functional connectivity between the right nucleus accumbens-ventral tegmental area negatively correlated with the level of prostaglandin F2 alpha. Our findings provide neuroimaging evidence in support of the abnormal reward system connectivity in primary dysmenorrhea patients, which might contribute to a better understanding of the cerebral pathophysiology of primary dysmenorrhea.
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Affiliation(s)
- Qi Zhang
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Siyi Yu
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yanan Wang
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Minyu Wang
- Damian Honghe Community Health Service Center of Longquanyi, Chengdu, China
| | - Ya Yang
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Wei
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoli Guo
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fang Zeng
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fanrong Liang
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jie Yang
- Department of Acupuncture & Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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20
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Faivre F, Joshi A, Bezard E, Barrot M. The hidden side of Parkinson’s disease: Studying pain, anxiety and depression in animal models. Neurosci Biobehav Rev 2019; 96:335-352. [DOI: 10.1016/j.neubiorev.2018.10.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/14/2018] [Accepted: 10/12/2018] [Indexed: 12/21/2022]
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21
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Blanchet PJ, Brefel-Courbon C. Chronic pain and pain processing in Parkinson's disease. Prog Neuropsychopharmacol Biol Psychiatry 2018; 87:200-206. [PMID: 29031913 DOI: 10.1016/j.pnpbp.2017.10.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/26/2017] [Accepted: 10/07/2017] [Indexed: 12/24/2022]
Abstract
Pain is experienced by the vast majority of patients living with Parkinson's disease. It is most often of nociceptive origin, but may also be ascribed to neuropathic (radicular or central) or miscellaneous sources. The recently validated King's Parkinson's Disease Pain Scale is based on 7 domains including musculoskeletal pain, chronic body pain (central or visceral), fluctuation-related pain, nocturnal pain, oro-facial pain, pain with discolouration/oedema/swelling, and radicular pain. The basal ganglia integrate incoming nociceptive information and contribute to coordinated motor responses in pain avoidance and nocifensive behaviors. In Parkinson's disease, nigral and extra-nigral pathology, involving cortical areas, brainstem nuclei, and spinal cord, may contribute to abnormal central nociceptive processing in patients experiencing pain or not. The dopamine deficit lowers multimodal pain thresholds that are amenable to correction following levodopa dosing. Functional brain imaging with positron emission tomography following administration of H215O revealed abnormalities in the sensory discriminative processing of pain (insula/SII), as well as in the affective motivational processing of pain (anterior cingulate cortex, prefrontal cortex). Pain management is dependent on efforts invested in diagnostic accuracy to distinguish nociceptive from neuropathic pain. Treatment requires an integrated approach including strategies to lessen levodopa-related response fluctuations, in addition to other pharmacological and non-pharmacological options such as deep brain stimulation and rehabilitation.
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Affiliation(s)
- Pierre J Blanchet
- Department of Stomatology, Faculty of Dental Medicine, Université de Montréal; Montréal, QC, Canada; Service de neurologie, CHU Montréal, Montréal, QC, Canada.
| | - Christine Brefel-Courbon
- Service de Pharmacologie Clinique, Faculty of Medicine, University Hospital, Toulouse, France; Service de neurologie B8, Pierre Paul Riquet Hospital, University Hospital, Toulouse, France.
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22
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Sokolov AY, Popova NS, Povarenkov AS, Amelin AV. The Role of Dopamine in Primary Headaches. NEUROCHEM J+ 2018. [DOI: 10.1134/s1819712418030145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Fu B, Wen SN, Wang B, Wang K, Zhang JY, Weng XC, Liu SJ. Gabapentin regulates dopaminergic neuron firing and theta oscillation in the ventral tegmental area to reverse depression-like behavior in chronic neuropathic pain state. J Pain Res 2018; 11:2247-2256. [PMID: 30349351 PMCID: PMC6186769 DOI: 10.2147/jpr.s170167] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Purpose Ventral tegmental area (VTA) dopamine system plays an important role in depression and is also involved in pain experience. In this study, we investigated the VTA dopaminergic (DA) neuron firing and local field potential (LFP) in pain-related depression, and we try to explore the underlying relationship between pain and depression. Materials and methods We used neuropathic pain model [spare nerve injury (SNI)] to induce pain-related depression. The Dixon up–down method was used to test mechanical hypersensitivity. Behavioral changes like open field test, sucrose preference test, and forced swim test were used to test depression-like behaviors. Gabapentin (GBP) was used to explore the chronic analgesic treatment that could reverse pain-related depression. To investigate the in vivo variations of VTA DA neuron firing and LFP, multichannel acquisition processor system was used. Results We used SNI to induce depression-like behaviors. Repeated GBP treatment reversed these behaviors after 14 days of injection. An in vivo electrophysiological analysis of the firing characteristics of VTA DA neurons and LFP revealed that SNI increased the firing rate of DA neurons, but not the burst firing activity. Surprisingly, chronic GBP reversed the firing rate of DA neurons and reduced the burst firing activity. Moreover, SNI increased the LFP power in delta and theta oscillation and decreased it in beta oscillation. Repeated administration of GBP significantly suppressed theta oscillation. Above all, chronic GBP altered these characteristics to reverse depression-like behaviors. Conclusion The present study confirmed that the tonic firing activity of VTA DA neurons, but not the burst firing activity, was the key factor in peripheral neuropathy–induced depression. Chronic GBP regulated the firing pattern of DA neurons and decreased theta oscillation in VTA to treat pain-related depression. This variation tendency of electrophysiological characteristics of VTA DA neurons and theta oscillation in VTA might represent an attempt to cope with pain-related negative mood disorder.
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Affiliation(s)
- Bo Fu
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China, ;
| | - Shao-Nan Wen
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China, ;
| | - Bin Wang
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China, ;
| | - Kun Wang
- Department of Occupational Medicine, Tianjin Institute of Environmental and Occupational Medicine, Tianjin 300050, China
| | - Ji-Yan Zhang
- Department of Molecular Immunology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China
| | - Xie-Chuan Weng
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China, ;
| | - Shao-Jun Liu
- State Key Laboratory of Proteomics, Department of Neurobiology, Institute of Military Cognitive and Brain Sciences, Academy of Military Medical Sciences, Beijing 100850, China, ;
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24
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Ko MY, Jang EY, Lee JY, Kim SP, Whang SH, Lee BH, Kim HY, Yang CH, Cho HJ, Gwak YS. The Role of Ventral Tegmental Area Gamma-Aminobutyric Acid in Chronic Neuropathic Pain after Spinal Cord Injury in Rats. J Neurotrauma 2018; 35:1755-1764. [PMID: 29466910 DOI: 10.1089/neu.2017.5381] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Spinal cord injury (SCI) frequently results in chronic neuropathic pain (CNP). However, the understanding of brain neural circuits in CNP modulation is unclear. The present study examined the changes of ventral tegmental area (VTA) putative GABAergic and dopaminergic neuronal activity with CNP attenuation in rats. SCI was established by T10 clip compression injury (35 g, 1 min) in rats, and neuropathic pain behaviors, in vivo extracellular single-cell recording of putative VTA gamma-aminobutyric acid (GABA)/dopamine neurons, extracellular GABA level, glutamic acid decarboxylase (GAD), and vesicular GABA transporters (VGATs) were measured in the VTA, respectively. The results revealed that extracellular GABA level was significantly increased in the CNP group (50.5 ± 18.9 nM) compared to the sham control group (10.2 ± 1.7 nM). In addition, expression of GAD65/67, c-Fos, and VGAT exhibited significant increases in the SCI groups compared to the sham control group. With regard to neuropathic pain behaviors, spontaneous pain measured by ultrasound vocalizations (USVs) and evoked pain measured by paw withdrawal thresholds showed significant alteration, which was reversed by intravenous (i.v.) administration of morphine (0.5-5.0 mg/kg). With regard to in vivo electrophysiology, VTA putative GABAergic neuronal activity (13.6 ± 1.7 spikes/sec) and putative dopaminergic neuronal activity (2.4 ± 0.8 spikes/sec) were increased and decreased, respectively, in the SCI group compared to the sham control group. These neuronal activities were reversed by i.v. administration of morphine. The present study suggests that chronic increase of GABAergic neuronal activity suppresses dopaminergic neuronal activity in the VTA and is responsible for negative emotion and motivation for attenuation of SCI-induced CNP.
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Affiliation(s)
- Moon Yi Ko
- 1 Department of Aroma Application Industry, Daegu Hanny University , Kyungsansi, South Korea
| | - Eun Young Jang
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - June Yeon Lee
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - Soo Phil Kim
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - Sung Hun Whang
- 3 Department of Anatomy, School of Medicine, Kyungpook National University , Daegu, South Korea
| | - Bong Hyo Lee
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - Hee Young Kim
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - Chae Ha Yang
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
| | - Hee Jung Cho
- 3 Department of Anatomy, School of Medicine, Kyungpook National University , Daegu, South Korea
| | - Young S Gwak
- 2 Department of Physiology, College of Korean Medicine, Daegu Haany University , Daegu, South Korea
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25
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Cardoso-Cruz H, Dourado M, Monteiro C, Galhardo V. Blockade of dopamine D2 receptors disrupts intrahippocampal connectivity and enhances pain-related working memory deficits in neuropathic pain rats. Eur J Pain 2018; 22:1002-1015. [PMID: 29377353 DOI: 10.1002/ejp.1186] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2017] [Indexed: 11/09/2022]
Abstract
BACKGROUND Dopamine (DA) is thought to be important to local hippocampal networks integrity during spatial working memory (sWM) processing. Chronic pain may contribute to deficient dopaminergic signalling, which may in turn affect cognition. However, the neural mechanisms that determine this impairment are poorly understood. Here, we evaluated whether the sWM impairment characteristic of animal models of chronic pain is dependent on DA D2 receptor (D2r) activity. METHODS To address this issue, we implanted multichannel arrays of electrodes in the dorsal and ventral hippocampal CA1 field (dvCA1) of rats and recorded the neuronal activity during a classical delayed food-reinforced T-maze sWM task. Within-subject behavioural performance and patterns of dorsoventral neural activity were assessed before and after the onset of persistent neuropathic pain using the spared nerve injury (SNI) model. RESULTS Our results show that the peripheral nerve lesion caused a disruption in sWM and hippocampus spike activity and that disruption was maximized by the systemic administration of the D2r antagonist raclopride. These deficits are strictly correlated with a selective disruption of hippocampal theta-oscillations. Particularly, we found a significant decrease in intrahippocampal CA1 field connectivity level. CONCLUSIONS Together, these results suggest that disruption of the dopaminergic balance in the intrahippocampal networks may be important for the development of cognitive deficits experienced during painful conditions. SIGNIFICANCE This study provides new insights into the role of D2r in the manifestation of pain-related sWM deficits. Our findings support that selective blockade of D2r produces a significant decrease in intrahippocampal connectivity mediated by theta-oscillations, and amplifies pain-related sWM deficits. These results suggest that further characterization of intrahippocampal dopaminergic modulation may be clinically relevant for the understanding of cognitive impairments that accompanies nociceptive stressful conditions.
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Affiliation(s)
- H Cardoso-Cruz
- Departamento de Biomedicina - Unidade de Biologia Experimental, Faculdade de Medicina, Centro de investigação Médica, Universidade do Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde & IBMC - Instituto de Biologia Molecular e Celular, Pain Research Group, Universidade do Porto, Porto, Portugal
| | - M Dourado
- Departamento de Biomedicina - Unidade de Biologia Experimental, Faculdade de Medicina, Centro de investigação Médica, Universidade do Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde & IBMC - Instituto de Biologia Molecular e Celular, Pain Research Group, Universidade do Porto, Porto, Portugal.,PDN - Programa Doutoral em Neurociências, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - C Monteiro
- Departamento de Biomedicina - Unidade de Biologia Experimental, Faculdade de Medicina, Centro de investigação Médica, Universidade do Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde & IBMC - Instituto de Biologia Molecular e Celular, Pain Research Group, Universidade do Porto, Porto, Portugal
| | - V Galhardo
- Departamento de Biomedicina - Unidade de Biologia Experimental, Faculdade de Medicina, Centro de investigação Médica, Universidade do Porto, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde & IBMC - Instituto de Biologia Molecular e Celular, Pain Research Group, Universidade do Porto, Porto, Portugal
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26
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Gómez-Paz A, Drucker-Colín R, Milán-Aldaco D, Palomero-Rivero M, Ambriz-Tututi M. Intrastriatal Chromospheres' Transplant Reduces Nociception in Hemiparkinsonian Rats. Neuroscience 2017; 387:123-134. [PMID: 28890053 DOI: 10.1016/j.neuroscience.2017.08.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 08/20/2017] [Accepted: 08/29/2017] [Indexed: 10/18/2022]
Abstract
The present study evaluates the possible antinociceptive effect of chromosphere transplants in rats injected with 6-hydroxydopamine (6-OHDA), a model of Parkinson's disease. Male adult Wistar rats received 40μg/0.5μl of 6-OHDA or 0.5μl of vehicle into the left substantia nigra (SNc). Rats were evaluated for mechanical allodynia, cold allodynia, thermal hyperalgesia and formalin. Rats with altered nociceptive threshold were transplanted with chromospheres. After transplant, rats were evaluated every week. Our results confirm that 6-OHDA injection into rat's SNc reduces mechanical, thermal, and chemical thresholds. Interestingly, chromospheres' transplant reverted 6-OHDA-induced allodynia and hyperalgesia. The antinociceptive effect induced by chromospheres was dopamine D2- and opioid-receptor dependent since sulpiride or naltrexone reverted its effect.
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Affiliation(s)
- Alejandra Gómez-Paz
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - René Drucker-Colín
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Diana Milán-Aldaco
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Marcela Palomero-Rivero
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico
| | - Mónica Ambriz-Tututi
- Hospital General Ajusco Medio "Dra. Obdulia Rodriguez Rodriguez", Unidad de, Trastornos de Movimiento y Sueño, Mexico.
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27
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Devonshire IM, Burston JJ, Xu L, Lillywhite A, Prior MJ, Watson DJG, Greenspon CM, Iwabuchi SJ, Auer DP, Chapman V. Manganese-enhanced magnetic resonance imaging depicts brain activity in models of acute and chronic pain: A new window to study experimental spontaneous pain? Neuroimage 2017. [PMID: 28633971 PMCID: PMC5607296 DOI: 10.1016/j.neuroimage.2017.06.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Application of functional imaging techniques to animal models is vital to understand pain mechanisms, but is often confounded by the need to limit movement artefacts with anaesthesia, and a focus on evoked responses rather than clinically relevant spontaneous pain and related hyperalgesia. The aim of the present study was to investigate the potential of manganese-enhanced magnetic resonance imaging (MEMRI) to measure neural responses during on-going pain that underpins hyperalgesia in pre-clinical models of nociception. As a proof of concept that MEMRI is sensitive to the neural activity of spontaneous, intermittent behaviour, we studied a separate positive control group undergoing a voluntary running wheel experiment. In the pain models, pain behaviour (weight bearing asymmetry and hindpaw withdrawal thresholds (PWTs)) was measured at baseline and following either intra-articular injection of nerve growth factor (NGF, 10µg/50µl; acute pain model, n=4 rats per group), or the chondrocyte toxin monosodium iodoacetate (MIA, 1mg/50µl; chronic model, n=8 rats per group), or control injection. Separate groups of rats underwent a voluntary wheel running protocol (n=8 rats per group). Rats were administered with paramagnetic ion Mn2+ as soluble MnCl2 over seven days (subcutaneous osmotic pump) to allow cumulative activity-dependent neural accumulation in the models of pain, or over a period of running. T1-weighted MR imaging at 7T was performed under isoflurane anaesthesia using a receive-only rat head coil in combination with a 72mm volume coil for excitation. The pain models resulted in weight bearing asymmetry (NGF: 20.0 ± 5.2%, MIA: 15 ± 3%), and a reduction in PWT in the MIA model (8.3 ± 1.5g) on the final day of assessment before undergoing MR imaging. Voxel-wise and region-based analysis of MEMRI data did not identify group differences in T1 signal. However, MnCl2 accumulation in the VTA, right Ce amygdala, and left cingulate was negatively correlated with pain responses (greater differences in weight bearing), similarly MnCl2 accumulation was reduced in the VTA in line with hyperalgesia (lower PWTs), which suggests reduced regional activation as a result of the intensity and duration of pain experienced during the 7 days of MnCl2 exposure. Motor cortex T1-weighted signal increase was associated with the distance ran in the wheel running study, while no between group difference was seen. Our data suggest that on-going pain related signal changes identified using MEMRI offers a new window to study the neural underpinnings of spontaneous pain in rats.
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Affiliation(s)
- I M Devonshire
- Arthritis Research UK Pain Centre, University of Nottingham, UK; School of Life Sciences, University of Nottingham, UK
| | - J J Burston
- Arthritis Research UK Pain Centre, University of Nottingham, UK; School of Life Sciences, University of Nottingham, UK
| | - L Xu
- Arthritis Research UK Pain Centre, University of Nottingham, UK; School of Life Sciences, University of Nottingham, UK
| | - A Lillywhite
- Arthritis Research UK Pain Centre, University of Nottingham, UK; School of Life Sciences, University of Nottingham, UK
| | - M J Prior
- Medical Imaging Unit, School of Medicine, University of Nottingham, UK
| | - D J G Watson
- School of Life Sciences, University of Nottingham, UK
| | - C M Greenspon
- School of Life Sciences, University of Nottingham, UK
| | - S J Iwabuchi
- Medical Imaging Unit, School of Medicine, University of Nottingham, UK; Neuroradiology, Nottingham University Hospitals Trust, Nottingham NG7 2UH, UK
| | - D P Auer
- Arthritis Research UK Pain Centre, University of Nottingham, UK; Medical Imaging Unit, School of Medicine, University of Nottingham, UK; Neuroradiology, Nottingham University Hospitals Trust, Nottingham NG7 2UH, UK
| | - V Chapman
- Arthritis Research UK Pain Centre, University of Nottingham, UK; School of Life Sciences, University of Nottingham, UK.
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Lazenka MF, Freitas KC, Henck S, Negus SS. Relief of Pain-Depressed Behavior in Rats by Activation of D1-Like Dopamine Receptors. J Pharmacol Exp Ther 2017; 362:14-23. [PMID: 28411257 DOI: 10.1124/jpet.117.240796] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/13/2017] [Indexed: 12/11/2022] Open
Abstract
Clinically significant pain often includes a decrease in both behavior and mesolimbic dopamine signaling. Indirect and/or direct dopamine receptor agonists may alleviate pain-related behavioral depression. To test this hypothesis, the present study compared effects of indirect and direct dopamine agonists in a preclinical assay of pain-depressed operant responding. Male Sprague-Dawley rats with chronic indwelling microelectrodes in the medial forebrain bundle were trained in an intracranial self-stimulation (ICSS) procedure to press a lever for pulses of electrical brain stimulation. Intraperitoneal injection of dilute lactic acid served as an acute noxious stimulus to depress ICSS. Intraperitoneal lactic acid-induced depression of ICSS was dose-dependently blocked by the dopamine transporter inhibitor methylphenidate and the D1-selective agonist SKF82958, but not by the D2/3-selective agonists quinpirole, pramipexole, or sumanirole. The antinociceptive effects of methylphenidate and SKF82958 were blocked by the D1-selective antagonist SCH39166. Acid-induced stimulation of a stretching response was evaluated in separate groups of rats, but all agonists decreased acid-stimulated stretching, and antagonism experiments were inconclusive due to direct effects of the antagonists when administered alone. Taken together, these results suggest that D1-receptor stimulation is both sufficient to block acid-induced depression of ICSS and necessary for methylphenidate antinociception in this procedure. Conversely, D2/3-receptor stimulation is not sufficient to relieve pain-depressed behavior. These results support the hypothesis that pain-related depression of dopamine D1 receptor signaling contributes to pain-related depression of behavior in rats. Additionally, these results support further consideration of indirect dopamine agonists and direct D1 receptor agonists as candidate treatments for pain-related behavioral depression.
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Affiliation(s)
- Matthew F Lazenka
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia
| | - Kelen C Freitas
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia
| | - Sydney Henck
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia
| | - S Stevens Negus
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia
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Neeb L, Bastian K, Villringer K, Israel H, Reuter U, Fiebach JB. Structural Gray Matter Alterations in Chronic Migraine: Implications for a Progressive Disease? Headache 2016; 57:400-416. [DOI: 10.1111/head.13012] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/30/2016] [Accepted: 10/25/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Lars Neeb
- Department of Neurology; Charité Universitätsmedizin Berlin; Berlin Germany
- Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin; Berlin Germany
| | - Kaili Bastian
- Department of Neurology; Charité Universitätsmedizin Berlin; Berlin Germany
- Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin; Berlin Germany
| | - Kersten Villringer
- Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin; Berlin Germany
| | - Heike Israel
- Department of Neurology; Charité Universitätsmedizin Berlin; Berlin Germany
| | - Uwe Reuter
- Department of Neurology; Charité Universitätsmedizin Berlin; Berlin Germany
| | - Jochen B. Fiebach
- Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin; Berlin Germany
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Kaszuba BC, Walling I, Gee LE, Shin DS, Pilitsis JG. Effects of subthalamic deep brain stimulation with duloxetine on mechanical and thermal thresholds in 6OHDA lesioned rats. Brain Res 2016; 1655:233-241. [PMID: 27984022 DOI: 10.1016/j.brainres.2016.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 10/24/2016] [Accepted: 10/27/2016] [Indexed: 01/31/2023]
Abstract
Chronic pain is the most common non-motor symptom of Parkinson's disease (PD) and is often overlooked. Unilateral 6-hydroxydopamine (6-OHDA) medial forebrain bundle lesioned rats used as models for PD exhibit decreased sensory thresholds in the left hindpaw. Subthalamic deep brain stimulation (STN DBS) increases mechanical thresholds and offers improvements with chronic pain in PD patients. However, individual responses to STN high frequency stimulation (HFS) in parkinsonian rats vary with 58% showing over 100% improvement, 25% showing 30-55% improvement, and 17% showing no improvement. Here we augment STN DBS by supplementing with a serotonin-norepinephrine reuptake inhibitor commonly prescribed for pain, duloxetine. Duloxetine was administered intraperitoneally (30mg/kg) in 15 parkinsonian rats unilaterally implanted with STN stimulating electrodes in the lesioned right hemisphere. Sensory thresholds were tested using von Frey, Randall-Selitto and hot-plate tests with or without duloxetine, and stimulation to the STN at HFS (150Hz), low frequency (LFS, 50Hz), or off stimulation. With HFS or LFS alone (left paw; p=0.016; p=0.024, respectively), animals exhibited a higher mechanical thresholds stable in the three days of testing, but not with duloxetine alone (left paw; p=0.183). Interestingly, the combination of duloxetine and HFS produced significantly higher mechanical thresholds than duloxetine alone (left paw, p=0.002), HFS alone (left paw, p=0.028), or baseline levels (left paw; p<0.001). These findings show that duloxetine paired with STN HFS increases mechanical thresholds in 6-OHDA-lesioned animals more than either treatment alone. It is possible that duloxetine augments STN DBS with a central and peripheral additive effect, though a synergistic mechanism has not been excluded.
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Affiliation(s)
- Brian C Kaszuba
- Department of Neuroscience & Experimental Therapeutics, Albany Medical College, Albany, NY, United States
| | - Ian Walling
- Department of Neuroscience & Experimental Therapeutics, Albany Medical College, Albany, NY, United States
| | - Lucy E Gee
- Department of Neuroscience & Experimental Therapeutics, Albany Medical College, Albany, NY, United States; Department of Neurosurgery, Albany Medical Center, Albany, NY, United States
| | - Damian S Shin
- Department of Neuroscience & Experimental Therapeutics, Albany Medical College, Albany, NY, United States
| | - Julie G Pilitsis
- Department of Neuroscience & Experimental Therapeutics, Albany Medical College, Albany, NY, United States; Department of Neurosurgery, Albany Medical Center, Albany, NY, United States.
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The effect of forced swim stress on morphine sensitization: Involvement of D1/D2-like dopamine receptors within the nucleus accumbens. Prog Neuropsychopharmacol Biol Psychiatry 2016; 70:92-9. [PMID: 27235796 DOI: 10.1016/j.pnpbp.2016.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 05/17/2016] [Accepted: 05/24/2016] [Indexed: 11/21/2022]
Abstract
Nucleus accumbens (NAc) plays an essential role in morphine sensitization and suppression of pain. Repeated exposure to stress and morphine increases dopamine release in the NAc and may lead to morphine sensitization. This study was carried out in order to investigate the effect of forced swim stress (FSS), as a predominantly physical stressor and morphine on the development of morphine sensitization; focusing on the function of D1/D2-like dopamine receptors in the NAc in morphine sensitization. Eighty-five adult male Wistar rats were bilaterally implanted with cannulae in the NAc and various doses of SCH-23390 (0.125, 0.25, 1 and 4μg/0.5μl/NAc) as a D1 receptor antagonist and sulpiride (0.25, 1 and 4μg/0.5μl/NAc) as a D2 receptor antagonist were microinjected into the NAc, during a sensitization period of 3days, 5min before the induction of FSS. After 10min, animals received subcutaneous morphine injection (1mg/kg). The procedure was followed by 5days free of antagonist, morphine and stress; thereafter on the 9th day, the nociceptive response was evaluated by tail-flick test. The results revealed that the microinjection of sulpiride (at 1 and 4μg/0.5μl/NAc) or SCH-23390 (at 0.25, 1 and 4μg/0.5μl/NAc) prior to FSS and morphine disrupts the antinociceptive effects of morphine and morphine sensitization. Our findings suggest that FSS can potentiate the effect of morphine and causes morphine sensitization which induces antinociception.
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Kami K, Tajima F, Senba E. Exercise-induced hypoalgesia: potential mechanisms in animal models of neuropathic pain. Anat Sci Int 2016; 92:79-90. [DOI: 10.1007/s12565-016-0360-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 07/21/2016] [Indexed: 02/02/2023]
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Gee LE, Walling I, Ramirez-Zamora A, Shin DS, Pilitsis JG. Subthalamic deep brain stimulation alters neuronal firing in canonical pain nuclei in a 6-hydroxydopamine lesioned rat model of Parkinson's disease. Exp Neurol 2016; 283:298-307. [PMID: 27373204 DOI: 10.1016/j.expneurol.2016.06.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/18/2016] [Accepted: 06/28/2016] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Chronic pain is one of the most common non-motor symptoms of Parkinson's disease (PD) affecting up to 85% of patients. Previous studies have established that reduced mechanical and thermal thresholds occur in both idiopathic PD patients and animal models of PD, suggesting that changes may occur in sensory processing circuits. Improvements in sensory thresholds are achieved using subthalamic nucleus (STN) deep brain stimulation (DBS), however the mechanism by which this occurs remains unresolved. MATERIALS AND METHODS We examined unilateral medial forebrain bundle 6-hydroxydopamine (6OHDA) rat model of PD to determine whether STN DBS alters neuronal firing rates in brain areas involved in ascending and descending pain processing. Specifically, single unit in vivo recordings were conducted in the anterior cingulate cortex (ACC), the periaqueductal grey (PAG), and the ventral posteriolateral nucleus of the thalamus (VPL), before, during and after stimulation was applied to the STN at 50 or 150Hz. RESULTS Sham and 6OHDA lesioned animals have similar neuronal firing activity in the VPL, ACC and PAG before stimulation was applied (p>0.05). In 6OHDA lesioned rats, both low frequency stimulation (LFS) (p<0.01) and high frequency stimulation (HFS) (p<0.05) attenuated firing frequency in the ACC. In shams, only LFS decreased firing frequency. A subset of neurons in the PAG was significantly attenuated in both sham and 6OHDA lesioned animals during HFS and LFS (p<0.05), while another subset of PAG neuronal activity significantly increased in 6OHDA lesioned rats during HFS (p<0.05). Finally, low or high frequency STN DBS did not alter neuronal firing frequencies in the VPL. CONCLUSIONS Our results suggest that STN DBS alters neuronal firing in descending pain circuits. We hypothesize that STN DBS attenuates excitatory projections from the ACC to the PAG in 6OHDA lesioned rats. Following this, neurons in the PAG respond by either increasing (during HFS only) or decreasing (during both LFS and HFS), which may modulate descending facilitation or inhibition at the level of the spinal cord. Future work should address specific neuronal changes in the ACC and PAG that occur in a freely moving parkinsonian animal during a pain stimulus treated with STN DBS.
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Affiliation(s)
- Lucy E Gee
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, United States; Department of Neurosurgery, Albany Medical Center, Albany, NY, United States
| | - Ian Walling
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, United States; Department of Neurosurgery, Albany Medical Center, Albany, NY, United States
| | | | - Damian S Shin
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, United States
| | - Julie G Pilitsis
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, United States; Department of Neurosurgery, Albany Medical Center, Albany, NY, United States.
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Mitsi V, Zachariou V. Modulation of pain, nociception, and analgesia by the brain reward center. Neuroscience 2016; 338:81-92. [PMID: 27189881 DOI: 10.1016/j.neuroscience.2016.05.017] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/26/2016] [Accepted: 05/05/2016] [Indexed: 02/06/2023]
Abstract
The midbrain dopamine center comprises a key network for reward, salience, motivation, and mood. Evidence from various clinical and preclinical settings points to the midbrain dopamine circuit as an important modulator of pain perception and pain-induced anxiety and depression. This review summarizes recent findings that shed light to the neuroanatomical, electrophysiological and molecular adaptations that chronic pain conditions promote in the mesolimbic dopamine system. Chronic pain states induce changes in neuronal plasticity and functional connectivity in several parts of the brain reward center, including nucleus accumbens, the ventral tegmental area and the prefrontal cortex. Here, we discuss recent findings on the mechanisms involved in the perception of chronic pain, in pain-induced anxiety and depression, as well as in pain-killer addiction vulnerability. Several new studies also show that the mesolimbic dopamine circuit potently modulates responsiveness to opioids and antidepressants used for the treatment of chronic pain. We discuss recent data supporting a role of the brain reward pathway in treatment efficacy and we summarize novel findings on intracellular adaptations in the brain reward circuit under chronic pain states.
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Affiliation(s)
- Vasiliki Mitsi
- Department of Basic Sciences, Faculty of Medicine, University of Crete, Heraklion, Crete 71003, Greece; Fishberg Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
| | - Venetia Zachariou
- Fishberg Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States.
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Belasen A, Rizvi K, Gee LE, Yeung P, Prusik J, Ramirez-Zamora A, Hanspal E, Paiva P, Durphy J, Argoff CE, Pilitsis JG. Effect of low-frequency deep brain stimulation on sensory thresholds in Parkinson's disease. J Neurosurg 2016; 126:397-403. [PMID: 27104841 DOI: 10.3171/2016.2.jns152231] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Chronic pain is a major distressing symptom of Parkinson's disease (PD) that is often undertreated. Subthalamic nucleus (STN) deep brain stimulation (DBS) delivers high-frequency stimulation (HFS) to patients with PD and has been effective in pain relief in a subset of these patients. However, up to 74% of patients develop new pain concerns while receiving STN DBS. Here the authors explore whether altering the frequency of STN DBS changes pain perception as measured through quantitative sensory testing (QST). METHODS Using QST, the authors measured thermal and mechanical detection and pain thresholds in 19 patients undergoing DBS via HFS, low-frequency stimulation (LFS), and off conditions in a randomized order. Testing was performed in the region of the body with the most pain and in the lower back in patients without chronic pain. RESULTS In the patients with chronic pain, LFS significantly reduced heat detection thresholds as compared with thresholds following HFS (p = 0.029) and in the off state (p = 0.010). Moreover, LFS resulted in increased detection thresholds for mechanical pressure (p = 0.020) and vibration (p = 0.040) compared with these thresholds following HFS. Neither LFS nor HFS led to changes in other mechanical thresholds. In patients without chronic pain, LFS significantly increased mechanical pain thresholds in response to the 40-g pinprick compared with thresholds following HFS (p = 0.032). CONCLUSIONS Recent literature has suggested that STN LFS can be useful in treating nonmotor symptoms of PD. Here the authors demonstrated that LFS modulates thermal and mechanical detection to a greater extent than HFS. Low-frequency stimulation is an innovative means of modulating chronic pain in PD patients receiving STN DBS. The authors suggest that STN LFS may be a future option to consider when treating Parkinson's patients in whom pain remains the predominant complaint.
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Affiliation(s)
| | | | - Lucy E Gee
- Departments of 1 Neurosurgery and.,Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, New York
| | | | | | | | | | | | | | | | - Julie G Pilitsis
- Departments of 1 Neurosurgery and.,Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, New York
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Dieb W, Ouachikh O, Alves S, Boucher Y, Durif F, Hafidi A. Nigrostriatal dopaminergic depletion increases static orofacial allodynia. J Headache Pain 2016; 17:11. [PMID: 26885825 PMCID: PMC4757596 DOI: 10.1186/s10194-016-0607-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/12/2016] [Indexed: 01/05/2023] Open
Abstract
Background This study investigated mesencephalic dopamine depletion effects on static mechanical allodynia (SMA) elicited by chronic constriction of the infraorbitary nerve (CCI-IoN). Methods Dopamine depletion (6-OHDA administration into the medial forebrain bundle) effects on CCI-IoN-induced SMA were explored using behavioral (nocifensive behavior score upon non-noxious stimuli using von Frey filament), pharmacological (bromocriptine injections) and immunohistochemical (PKCγ and pERK1/2) techniques. Results The central dopamine depletion increased significantly the SMA score. Intraperitoneal and intracisternal injections of bromocriptine alleviated the allodynic behavior observed in both CCI-IoN and CCI-IoN + 6-OHDA animal groups. At the cellular level, dopamine depletion induced a significant increase in PKCγ expression in the medullary dorsal horn (MDH) in rat with CCI-IoN + 6-OHDA when compared to sham animals (CCI-IoN only). Similarly, after static non-noxious stimuli, the expression of pain marker proteins pERK1/2 within the MDH revealed significantly a higher number of positive cells in CCI-IoN + 6-OHDA rats when compared to the CCI-IoN group. Conclusion This study demonstrates that nigrostriatal dopamine depletion exacerbates the neuropathic pain resulting from CCI-IoN. This effect is probably due to an action through descending pain inhibitory systems which increased pain sensitization at the MDH level. It demonstrates also an analgesic effect elicited by D2R activation at the segmental level. Electronic supplementary material The online version of this article (doi:10.1186/s10194-016-0607-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wisam Dieb
- UFR Odontologie, Université Paris Diderot, Paris, France. .,Centre de Psychiatrie et Neurosciences, INSERM U894, Paris, France. .,Clermont Université, Université d'Auvergne, EA7280, Clermont-Ferrand, France.
| | - Omar Ouachikh
- Clermont Université, Université d'Auvergne, EA7280, Clermont-Ferrand, France.
| | - Sofia Alves
- Clermont Université, Université d'Auvergne, EA7280, Clermont-Ferrand, France.
| | - Yves Boucher
- UFR Odontologie, Université Paris Diderot, Paris, France. .,Centre de Psychiatrie et Neurosciences, INSERM U894, Paris, France.
| | - Franck Durif
- Clermont Université, Université d'Auvergne, EA7280, Clermont-Ferrand, France. .,CHU Clermont-Ferrand, Service de Neurologie, 63000, Clermont-Ferrand, France.
| | - Aziz Hafidi
- Clermont Université, Université d'Auvergne, EA7280, Clermont-Ferrand, France.
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Stimulation of the ventral tegmental area increased nociceptive thresholds and decreased spinal dorsal horn neuronal activity in rat. Exp Brain Res 2016; 234:1505-14. [PMID: 26821313 DOI: 10.1007/s00221-016-4558-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/09/2016] [Indexed: 12/30/2022]
Abstract
Deep brain stimulation has been found to be effective in relieving intractable pain. The ventral tegmental area (VTA) plays a role not only in the reward process, but also in the modulation of nociception. Lesions of VTA result in increased pain thresholds and exacerbate pain in several pain models. It is hypothesized that direct activation of VTA will reduce pain experience. In this study, we investigated the effect of direct electrical stimulation of the VTA on mechanical, thermal and carrageenan-induced chemical nociceptive thresholds in Sprague-Dawley rats using our custom-designed wireless stimulator. We found that: (1) VTA stimulation itself did not show any change in mechanical or thermal threshold; and (2) the decreased mechanical and thermal thresholds induced by carrageenan injection in the hind paw contralateral to the stimulation site were significantly reversed by VTA stimulation. To further explore the underlying mechanism of VTA stimulation-induced analgesia, spinal cord dorsal horn neuronal responses to graded mechanical stimuli were recorded. VTA stimulation significantly inhibited dorsal horn neuronal activity in response to pressure and pinch from the paw, but not brush. This indicated that VTA stimulation may have exerted its analgesic effect via descending modulatory pain pathways, possibly through its connections with brain stem structures and cerebral cortex areas.
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Moradi M, Yazdanian M, Haghparast A. Role of dopamine D2-like receptors within the ventral tegmental area and nucleus accumbens in antinociception induced by lateral hypothalamus stimulation. Behav Brain Res 2015; 292:508-14. [DOI: 10.1016/j.bbr.2015.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 06/25/2015] [Accepted: 07/02/2015] [Indexed: 10/23/2022]
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Dias EV, Sartori CR, Marião PR, Vieira AS, Camargo LC, Athie MCP, Pagliusi MO, Tambeli CH, Parada CA. Nucleus accumbens dopaminergic neurotransmission switches its modulatory action in chronification of inflammatory hyperalgesia. Eur J Neurosci 2015; 42:2380-9. [DOI: 10.1111/ejn.13015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 07/03/2015] [Accepted: 07/06/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Elayne Vieira Dias
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - César Renato Sartori
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Paula Ramos Marião
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - André Schwambach Vieira
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Lilian Calili Camargo
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Maria Carolina Pedro Athie
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Marco Oreste Pagliusi
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Claudia Herrera Tambeli
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
| | - Carlos Amilcar Parada
- Department of Structural and Functional Biology; State University of Campinas; Rua Monteiro Lobato 255, Cidade Universitaria Zeferino Vaz Box 6109 13083-865 Campinas SP Brazil
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Gee LE, Chen N, Ramirez-Zamora A, Shin DS, Pilitsis JG. The effects of subthalamic deep brain stimulation on mechanical and thermal thresholds in 6OHDA-lesioned rats. Eur J Neurosci 2015; 42:2061-9. [PMID: 26082992 DOI: 10.1111/ejn.12992] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 06/08/2015] [Accepted: 06/11/2015] [Indexed: 12/21/2022]
Abstract
Chronic pain is a major complaint for up to 85% of Parkinson's disease patients; however, it often not identified as a symptom of Parkinson's disease. Adequate treatment of motor symptoms often provides analgesic effects in Parkinson's patients but how this occurs remains unclear. Studies have shown both Parkinson's patients and 6-hydroxydopamine-lesioned rats exhibit decreased sensory thresholds. In humans, some show improvements in these deficits after subthalamic deep brain stimulation, while others report no change. Differing methods of testing and response criteria may explain these varying results. We examined this effect in 6-hydroxydopamine-lesioned rats. Sprague-Dawley rats were unilaterally implanted with subthalamic stimulating electrodes in the lesioned right hemisphere and sensory thresholds were tested using von Frey, tail-flick and hot-plate tests. Tests were done during and off subthalamic stimulation at 50 and 150 Hz to assess its effects on sensory thresholds. The 6-hydroxydopamine-lesioned animals exhibited lower mechanical (left paw, P < 0.01) and thermal thresholds than shams (hot plate, P < 0.05). Both 50 and 150 Hz increased mechanical (left paw; P < 0.01) and thermal thresholds in 6-hydroxydopamine-lesioned rats (hot-plate test: 150 Hz, P < 0.05, 50 Hz, P < 0.01). Interestingly, during von Frey testing, low-frequency stimulation provided a more robust improvement in some 6OHDA lesioned rats, while in others, the magnitude of improvement on high-frequency stimulation was greater. This study shows that subthalamic deep brain stimulation improves mechanical allodynia and thermal hyperalgesia in 6-hydroxydopamine-lesioned animals at both high and low frequencies. Furthermore, we suggest considering using low-frequency stimulation when treating Parkinson's patients where pain remains the predominant complaint.
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Affiliation(s)
- Lucy E Gee
- Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, NY, USA.,Department of Neurosurgery, AMC Neurosurgery Group, Albany Medical Center, 47 New Scotland Ave, MC 10, Physicians Pavilion, 1st Floor, Albany, NY, 12208, USA
| | - Nita Chen
- Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, NY, USA
| | | | - Damian S Shin
- Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, NY, USA
| | - Julie G Pilitsis
- Center for Neuroscience and Neuropharmacology, Albany Medical College, Albany, NY, USA.,Department of Neurosurgery, AMC Neurosurgery Group, Albany Medical Center, 47 New Scotland Ave, MC 10, Physicians Pavilion, 1st Floor, Albany, NY, 12208, USA
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Cury R, Galhardoni R, Fonoff E, Perez Lloret S, dos Santos Ghilardi M, Barbosa E, Teixeira M, Ciampi de Andrade D. Sensory abnormalities and pain in Parkinson disease and its modulation by treatment of motor symptoms. Eur J Pain 2015; 20:151-65. [DOI: 10.1002/ejp.745] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2015] [Indexed: 01/07/2023]
Affiliation(s)
- R.G. Cury
- Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
- Pain Center; Instituto do Câncer do Estado de São Paulo; São Paulo Brazil
- Movement Disorders Group; Department of Neurology; University of São Paulo; São Paulo Brazil
| | - R. Galhardoni
- Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
| | - E.T. Fonoff
- Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
- Transcranial Magnetic Stimulation Laboratory; Psychiatry Institute; University of São Paulo; São Paulo Brazil
- Neurosurgery Division; Department of Neurology; University of São Paulo; São Paulo Brazil
| | - S. Perez Lloret
- Laboratory of Clinical Pharmacology and Epidemiology; Catholic University; Buenos Aires Argentina
| | | | - E.R. Barbosa
- Movement Disorders Group; Department of Neurology; University of São Paulo; São Paulo Brazil
| | - M.J. Teixeira
- Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
- Pain Center; Instituto do Câncer do Estado de São Paulo; São Paulo Brazil
- Movement Disorders Group; Department of Neurology; University of São Paulo; São Paulo Brazil
- Transcranial Magnetic Stimulation Laboratory; Psychiatry Institute; University of São Paulo; São Paulo Brazil
- Neurosurgery Division; Department of Neurology; University of São Paulo; São Paulo Brazil
| | - D. Ciampi de Andrade
- Pain Center; Department of Neurology; University of São Paulo; São Paulo Brazil
- Pain Center; Instituto do Câncer do Estado de São Paulo; São Paulo Brazil
- Transcranial Magnetic Stimulation Laboratory; Psychiatry Institute; University of São Paulo; São Paulo Brazil
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Blockade of D1-like dopamine receptors within the ventral tegmental area and nucleus accumbens attenuates antinociceptive responses induced by chemical stimulation of the lateral hypothalamus. Neurosci Lett 2015; 599:61-6. [DOI: 10.1016/j.neulet.2015.05.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/15/2015] [Accepted: 05/21/2015] [Indexed: 11/18/2022]
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Dieb W, Ouachikh O, Durif F, Hafidi A. Nigrostriatal dopaminergic depletion produces orofacial static mechanical allodynia. Eur J Pain 2015; 20:196-205. [DOI: 10.1002/ejp.707] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2015] [Indexed: 12/23/2022]
Affiliation(s)
- W. Dieb
- Clermont Université EA7280; Neuro-psycho-pharmacologie des systèmes dopaminergiques sous-corticaux; Université d'Auvergne; Clermont-Ferrand France
| | - O. Ouachikh
- Clermont Université EA7280; Neuro-psycho-pharmacologie des systèmes dopaminergiques sous-corticaux; Université d'Auvergne; Clermont-Ferrand France
| | - F. Durif
- Clermont Université EA7280; Neuro-psycho-pharmacologie des systèmes dopaminergiques sous-corticaux; Université d'Auvergne; Clermont-Ferrand France
- Service de Neurologie; CHU Clermont-Ferrand; France
| | - A. Hafidi
- Clermont Université EA7280; Neuro-psycho-pharmacologie des systèmes dopaminergiques sous-corticaux; Université d'Auvergne; Clermont-Ferrand France
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Ogata M, Noda K, Akita H, Ishibashi H. Characterization of nociceptive response to chemical, mechanical, and thermal stimuli in adolescent rats with neonatal dopamine depletion. Neuroscience 2015; 289:43-55. [DOI: 10.1016/j.neuroscience.2015.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/27/2014] [Accepted: 01/05/2015] [Indexed: 12/26/2022]
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Maegawa H, Morimoto Y, Kudo C, Hanamoto H, Boku A, Sugimura M, Kato T, Yoshida A, Niwa H. Neural mechanism underlying hyperalgesic response to orofacial pain in Parkinson's disease model rats. Neurosci Res 2015; 96:59-68. [PMID: 25637312 DOI: 10.1016/j.neures.2015.01.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 01/14/2015] [Accepted: 01/19/2015] [Indexed: 11/16/2022]
Abstract
To investigate the neural mechanism of pain originating from the orofacial region in PD patients, we used PD model rats produced by unilateral injection of 6-hydroxydopamine (6-OHDA) into the medial forebrain bundle. We investigated effects of nigrostriatal lesions on the behavioral response (face rubbing) to formalin injection into the upper lip. We also examined expression of c-Fos and phosphorylated extracellular signal-regulated kinase (pERK) in the trigeminal spinal subnucleus caudalis (Vc) and expression of c-Fos in the periaqueductal gray matter (PAG). Face rubbings following formalin injection showed a biphasic profile, with the first phase for the first 5 min and the second phase from 10 to 90 min. Rats with 6-OHDA lesions showed increased face rubbings in the second phase when formalin was injected ipsilaterally to the lesion, and c-Fos expression in the Vc increased. When formalin was injected contralaterally, face rubbings were reduced in the first phase, however, expression levels of c-Fos and pERK in the Vc were unchanged. No significant difference was found in c-Fos expression in the PAG between 6-OHDA- and saline-injected rats. These results suggest that unilateral dopamine depletion in the nigrostriatal pathway may be involved in hypersensitivity to noxious stimulation delivered to the orofacial region.
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Affiliation(s)
- Hiroharu Maegawa
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan.
| | - Yoshinari Morimoto
- Special Patient Oral Care Unit, Kyushu University Hospital, Fukuoka, Fukuoka 812-8582, Japan
| | - Chiho Kudo
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Hiroshi Hanamoto
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Aiji Boku
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Mitsutaka Sugimura
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Takafumi Kato
- Department of Oral Anatomy and Neurobiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Atsushi Yoshida
- Department of Oral Anatomy and Neurobiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
| | - Hitoshi Niwa
- Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka 565-0871, Japan
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Yazdi-Ravandi S, Razavi Y, Haghparast A, Goudarzvand M, Haghparast A. Orexin A induced antinociception in the ventral tegmental area involves D1 and D2 receptors in the nucleus accumbens. Pharmacol Biochem Behav 2014; 126:1-6. [DOI: 10.1016/j.pbb.2014.08.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/24/2014] [Accepted: 08/02/2014] [Indexed: 10/24/2022]
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Jääskeläinen SK, Lindholm P, Valmunen T, Pesonen U, Taiminen T, Virtanen A, Lamusuo S, Forssell H, Hagelberg N, Hietala J, Pertovaara A. Variation in the dopamine D2 receptor gene plays a key role in human pain and its modulation by transcranial magnetic stimulation. Pain 2014; 155:2180-7. [DOI: 10.1016/j.pain.2014.08.029] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/22/2014] [Accepted: 08/22/2014] [Indexed: 10/24/2022]
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Liu P, Zeng F, Yang F, Wang J, Liu X, Wang Q, Zhou G, Zhang D, Zhu M, Zhao R, Wang A, Gong Q, Liang F. Altered structural covariance of the striatum in functional dyspepsia patients. Neurogastroenterol Motil 2014; 26:1144-54. [PMID: 24865440 DOI: 10.1111/nmo.12372] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 05/01/2014] [Indexed: 12/24/2022]
Abstract
BACKGROUND Functional dyspepsia (FD) is thought to be involved in dysregulation within the brain-gut axis. Recently, altered striatum activation has been reported in patients with FD. However, the gray matter (GM) volumes in the striatum and structural covariance patterns of this area are rarely explored. The purpose of this study was to examine the GM volumes and structural covariance patterns of the striatum between FD patients and healthy controls (HCs). METHODS T1-weighted magnetic resonance images were obtained from 44 FD patients and 39 HCs. Voxel-based morphometry (VBM) analysis was adopted to examine the GM volumes in the two groups. The caudate- or putamen-related regions identified from VBM analysis were then used as seeds to map the whole brain voxel-wise structural covariance patterns. Finally, a correlation analysis was used to investigate the effects of FD symptoms on the striatum. KEY RESULTS The results showed increased GM volumes in the bilateral putamen and right caudate. Compared with the structural covariance patterns of the HCs, the FD-related differences were mainly located in the amygdala, hippocampus/parahippocampus (HIPP/paraHIPP), thalamus, lingual gyrus, and cerebellum. And significant positive correlations were found between the volumes in the striatum and the FD duration in the patients. CONCLUSIONS & INFERENCES These findings provided preliminary evidence for GM changes in the striatum and different structural covariance patterns in patients with FD. The current results might expand our understanding of the pathophysiology of FD.
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Affiliation(s)
- P Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, China
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Taylor AMW, Murphy NP, Evans CJ, Cahill CM. Correlation between ventral striatal catecholamine content and nociceptive thresholds in neuropathic mice. THE JOURNAL OF PAIN 2014; 15:878-85. [PMID: 25052072 DOI: 10.1016/j.jpain.2014.05.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/20/2014] [Accepted: 05/27/2014] [Indexed: 10/25/2022]
Abstract
UNLABELLED Neuropathic pain is characterized by persistent, intractable pain following damage or dysfunction of the nervous system. Analgesics that include central, rather than purely peripheral, targets are more effective when treating neuropathic pain, highlighting the spinal and/or supraspinal mechanisms that contribute to this aberrant pain condition. The striatum represents one of the brain regions that have been implicated in pain processing. Release of dopamine in the ventral striatum is normally associated with analgesia. Clinical and human imaging studies suggest that dopamine is disrupted in neuropathic pain patients, although the conclusions drawn from these studies are limited by their noninvasive imaging or pharmacologic approaches. In this study, we used a C57Bl/6 mouse model of neuropathic pain to describe the changes in neurotransmitter content in the striatum and their relationship to evoked pain thresholds. Striatal dopamine content negatively correlated with mechanical thresholds in sham animals. Neuropathic pain animals had reduced dopamine content that was not correlated with mechanical thresholds. In contrast, norepinephrine content was significantly increased and correlated with mechanical thresholds in neuropathic, but not sham, animals. These results describe changes in striatal signaling in neuropathic pain animals and contribute to the literature defining the role of dopamine and norepinephrine in mediating sensory thresholds in healthy and neuropathic pain states. PERSPECTIVE Results show significant loss of ventral striatal dopamine in neuropathic pain conditions, and the relationship of ventral striatal catecholamines to pain thresholds is changed in neuropathic pain. These results complement human imaging studies and provide evidence that chronic pain alters the function of reward systems.
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Affiliation(s)
- Anna M W Taylor
- Department of Anesthesiology and Perioperative Medicine, University of California, Irvine, California; Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, California
| | - Niall P Murphy
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, California
| | - Christopher J Evans
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, California
| | - Catherine M Cahill
- Department of Anesthesiology and Perioperative Medicine, University of California, Irvine, California.
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