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Du L, Yang D, Wu L, Mei L, Wu S, Ba Y, Bao Y, Su R, Song L. Integration of Gut Microbiota, Serum Metabolomic, and Network Pharmacology to Reveal the Anti Insomnia Mechanism of Mongolian Medicine Sugemule-4 Decoction on Insomnia Model Rats. Drug Des Devel Ther 2024; 18:2617-2639. [PMID: 38957410 PMCID: PMC11217142 DOI: 10.2147/dddt.s455600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 06/14/2024] [Indexed: 07/04/2024] Open
Abstract
Objective To explored the potential molecular mechanism of Sugemule-4 decoction (MMS-4D) in treating insomnia. Methods DL-4-chlorophenylalanine (PCPA) + chronic unpredictable mild stress stimulation (CUMS) was used to induce an insomnia model in rats. After the model was successfully established, MMS-4D was intervened at low, medium, and high doses for 7 days. The open-field test (OFT) was used to preliminarily evaluate the efficacy. The potential mechanism of MMS-4D in treating insomnia was investigated using gut microbiota, serum metabolomics, and network pharmacology (NP). Experimental validation of the main components of the key pathways was carried out using ELISA and Western blot. Results The weights of the insomnia-model rats were significantly raised (p ≤ 0.05), the total exercise distance in the OFT increased (p ≤ 0.05), the rest time shortened, and the number of standing times increased (p ≤ 0.05), after treatment with MMS-4D. Moreover, there was a substantial recovery in the 5-HT, DA, GABA, and Glu levels in the hypothalamus tissue and the 5-HT and GABA levels in the colon tissue of rats. The expression of DAT and DRD1 proteins in the hippocampus of insomnia rats reduced after drug treatment. MMS-4D may treat insomnia by regulating different crucial pathways including 5-HT -, DA -, GABA -, and Glu-mediated neuroactive light receiver interaction, cAMP signaling pathway, serotonergic, glutamatergic, dopaminergic, and GABAergic synapses. Conclusion This study revealed that MMS-4D can improve the general state and behavioral changes of insomnia model rats. Its mechanism may be related to the reversal of abnormal pathways mediated by 5-HT, DA, GABA, and Glu, such as Serotonergic synapse, Dopaminergic synapse, Glutamatergic synapse, and GABAergic synapse.
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Affiliation(s)
- Lina Du
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Dezhi Yang
- Innovative Mongolian Medical Engineering Research Center, Inner Mongolia International Mongolian Hospital, Hohhot, Inner Mongolia, People’s Republic of China
| | - Lan Wu
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Li Mei
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Sarula Wu
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Yasula Ba
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Yongchang Bao
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Rigugaqiqige Su
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Lin Song
- College of Mongolian Medical, Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of China
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Tran KKN, Wong VHY, Vessey KA, Finkelstein DI, Bui BV, Nguyen CTO. Levodopa Rescues Retinal Function in the Transgenic A53T Alpha-Synuclein Model of Parkinson's Disease. Biomedicines 2024; 12:130. [PMID: 38255235 PMCID: PMC10813165 DOI: 10.3390/biomedicines12010130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/11/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Loss of substantia nigra dopaminergic cells and alpha-synuclein (α-syn)-rich intraneuronal deposits within the central nervous system are key hallmarks of Parkinson's disease (PD). Levodopa (L-DOPA) is the current gold-standard treatment for PD. This study aimed to evaluate in vivo retinal changes in a transgenic PD model of α-syn overexpression and the effect of acute levodopa (L-DOPA) treatment. METHODS Anaesthetised 6-month-old mice expressing human A53T alpha-synuclein (HOM) and wildtype (WT) control littermates were intraperitoneally given 20 mg/kg L-DOPA (50 mg levodopa, 2.5 mg benserazide) or vehicle saline (n = 11-18 per group). In vivo retinal function (dark-adapted full-field ERG) and structure (optical coherence tomography, OCT) were recorded before and after drug treatment for 30 min. Ex vivo immunohistochemistry (IHC) on flat-mounted retina was conducted to assess tyrosine hydroxylase (TH) positive cell counts (n = 7-8 per group). RESULTS We found that photoreceptor (a-wave) and bipolar cell (b-wave) ERG responses (p < 0.01) in A53T HOM mice treated with L-DOPA grew in amplitude more (47 ± 9%) than WT mice (16 ± 9%) treated with L-DOPA, which was similar to the vehicle group (A53T HOM 25 ± 9%; WT 19 ± 7%). While outer retinal thinning (outer nuclear layer, ONL, and outer plexiform layer, OPL) was confirmed in A53T HOM mice (p < 0.01), L-DOPA did not have an ameliorative effect on retinal layer thickness. These findings were observed in the absence of changes to the number of TH-positive amacrine cells across experiment groups. Acute L-DOPA treatment transiently improves visual dysfunction caused by abnormal alpha-synuclein accumulation. CONCLUSIONS These findings deepen our understanding of dopamine and alpha-synuclein interactions in the retina and provide a high-throughput preclinical framework, primed for translation, through which novel therapeutic compounds can be objectively screened and assessed for fast-tracking PD drug discovery.
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Affiliation(s)
- Katie K. N. Tran
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (K.K.N.T.); (V.H.Y.W.); (B.V.B.)
| | - Vickie H. Y. Wong
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (K.K.N.T.); (V.H.Y.W.); (B.V.B.)
| | - Kirstan A. Vessey
- Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - David I. Finkelstein
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Bang V. Bui
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (K.K.N.T.); (V.H.Y.W.); (B.V.B.)
| | - Christine T. O. Nguyen
- Department of Optometry and Vision Sciences, The University of Melbourne, Parkville, VIC 3010, Australia; (K.K.N.T.); (V.H.Y.W.); (B.V.B.)
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Therapeutic Molecular Insights into the Active Engagement of Cannabinoids in the Therapy of Parkinson's Disease: A Novel and Futuristic Approach. Neurotox Res 2023; 41:85-102. [PMID: 36567416 DOI: 10.1007/s12640-022-00619-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/09/2022] [Accepted: 12/05/2022] [Indexed: 12/27/2022]
Abstract
Parkinson's disease is a neurodegenerative disorder which is characterised mostly by loss of dopaminergic nerve cells throughout the nigral area mainly as a consequence of oxidative stress. Muscle stiffness, disorganised bodily responses, disturbed sleep, weariness, amnesia, and voice impairment are all symptoms of dopaminergic neuron degeneration and existing symptomatic treatments are important to arrest additional neuronal death. Some cannabinoids have recently been demonstrated as robust antioxidants that might protect the nerve cells from degeneration even when cannabinoid receptors are not triggered. Cannabinoids are likely to have property to slow or presumably cease the steady deterioration of the brain's dopaminergic systems, a condition for which there is now no treatment. The use of cannabinoids in combination with currently available drugs has the potential to introduce a radically new paradigm for treatment of Parkinson's disease, making it immensely useful in the treatment of such a debilitating illness.
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Behavioral and neurochemical interactions of the tricyclic antidepressant drug desipramine with L-DOPA in 6-OHDA-lesioned rats. Implications for motor and psychiatric functions in Parkinson's disease. Psychopharmacology (Berl) 2022; 239:3633-3656. [PMID: 36178508 PMCID: PMC9584871 DOI: 10.1007/s00213-022-06238-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 09/12/2022] [Indexed: 11/11/2022]
Abstract
RATIONALE The pharmacological effects of antidepressants in modulating noradrenergic transmission as compared to serotonergic transmission in a rat model of Parkinson's disease under chronic L-DOPA therapy are insufficiently explored. OBJECTIVES The aim of the present study was to investigate the effect of the tricyclic antidepressant desipramine administered chronically alone or jointly with L-DOPA, on motor behavior and monoamine metabolism in selected brain structures of rats with the unilateral 6-OHDA lesion. METHODS The antiparkinsonian activities of L-DOPA and desipramine were assessed behaviorally using a rotation test and biochemically based on changes in the tissue concentrations of noradrenaline, dopamine and serotonin and their metabolites, evaluated separately for the ipsi- and contralateral motor (striatum, substantia nigra) and limbic (prefrontal cortex, hippocampus) structures of rat brain by HPLC method. RESULTS Desipramine administered alone did not induce rotational behavior, but in combination with L-DOPA, it increased the number of contralateral rotations more strongly than L-DOPA alone. Both L-DOPA and desipramine + L-DOPA significantly increased DA levels in the ipsilateral striatum, substantia nigra, prefrontal cortex and the ipsi- and contralateral hippocampus. The combined treatment also significantly increased noradrenaline content in the ipsi- and contralateral striatum, while L-DOPA alone decreased serotonin level on both sides of the hippocampus. CONCLUSIONS The performed analysis of the level of monoamines and their metabolites in the selected brain structures suggests that co-modulation of noradrenergic and dopaminergic transmission in Parkinson's disease by the combined therapy with desipramine + L-DOPA may have some positive implications for motor and psychiatric functions but further research is needed to exclude potential negative effects.
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Sheldon RS, Gerull B. Genetic markers of vasovagal syncope. Auton Neurosci 2021; 235:102871. [PMID: 34474354 DOI: 10.1016/j.autneu.2021.102871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/10/2021] [Accepted: 08/22/2021] [Indexed: 12/18/2022]
Abstract
Vasovagal syncope may have a genetic predisposition. It has a high prevalence in some families, and children of a fainting parent are more likely to faint than those without a parent who faints. Having two fainting parents or a fainting twin increases the likelihood even further. Several genotypes appear to associate with the phenotype of positive tilt tests, but the control subjects are usually those who faint and have negative tilt tests. Twin studies, highly focused genome-wide association studies, and copy number variation studies all suggest there are loci in the genome that associate with vasovagal syncope, although the specific genes, pathways, and proteins are unknown. A recent multigenerational kindred candidate gene study identified 3 genes that associate with vasovagal syncope. The best evidence to date is for central signaling genes involving serotonin and dopamine. Genome-wide association studies to date have not yet been helpful. Our understanding of the genetic correlates of vasovagal syncope leaves ample opportunity for future work.
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Affiliation(s)
- Robert S Sheldon
- Libin Cardiovascular Institute, University of Calgary, Calgary, Canada; Department of Internal Medicine I and Comprehensive Heart Failure Center, University of Würzburg, Germany.
| | - Brenda Gerull
- Libin Cardiovascular Institute, University of Calgary, Calgary, Canada; Department of Internal Medicine I and Comprehensive Heart Failure Center, University of Würzburg, Germany
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Boulain M, Yuan W, Oueghlani Z, Khsime I, Salvi V, Courtand G, Halgand C, Morin D, de Deurwaerdere P, Barrière G, Juvin L. L-DOPA and 5-HTP modulation of air-stepping in newborn rats. J Physiol 2021; 599:4455-4476. [PMID: 34411301 DOI: 10.1113/jp281983] [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: 06/04/2021] [Accepted: 08/03/2021] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS In newborn rats, L-DOPA increases the occurrence of air-stepping activity without affecting movement characteristics. L-DOPA administration increases the spinal content of dopamine in a dose-dependent manner. Injection of 5-HTP increases the spinal serotonin content but does not trigger air-stepping. 5-HTP counteracts the pro-locomotor action of L-DOPA. Less dopamine and serotonin are synthesized when L-DOPA and 5-HTP are administered as a cocktail. ABSTRACT The catecholamine precursor, L-3,4-dihydroxyphenylalanine (L-DOPA), is a well-established pharmacological agent for promoting locomotor action in vertebrates, including triggering air-stepping activities in the neonatal rat. Serotonin is also a well-known neuromodulator of the rodent spinal locomotor networks. Here, using kinematic analysis, we compared locomotor-related activities expressed by newborn rats in response to varying doses of L-DOPA and the serotonin precursor 5-hydroxytryptophan (5-HTP) administered separately or in combination. L-DOPA alone triggered episodes of air-stepping in a dose-dependent manner (25-100 mg/kg), notably determining the duration of locomotor episodes, but without affecting step cycle frequency or amplitude. In contrast, 5-HTP (25-150 mg/kg) was ineffective in instigating air-stepping, but altered episode durations of L-DOPA-induced air-stepping, and decreased locomotor cycle frequency. High performance liquid chromatography revealed that L-DOPA, which was undetectable in control conditions, accumulated in a dose-dependent manner in the lumbar spinal cord 30 min after its administration. This was paralleled by an increase in dopamine levels, whereas the spinal content of noradrenaline and serotonin remained unaffected. In the same way, the spinal levels of serotonin increased in parallel with the dose of 5-HTP without affecting the levels of dopamine and noradrenaline. When both precursors are administrated, they counteract each other for the production of serotonin and dopamine. Our data thus indicate for the first time that both L-DOPA and 5-HTP exert opposing neuromodulatory actions on air-stepping behaviour in the developing rat, and we speculate that competition for the production of dopamine and serotonin occurs when they are administered as a cocktail.
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Affiliation(s)
- Marie Boulain
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Wei Yuan
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, China
| | - Zied Oueghlani
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Inès Khsime
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Vianney Salvi
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Gilles Courtand
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Christophe Halgand
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Didier Morin
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | | | - Grégory Barrière
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
| | - Laurent Juvin
- CNRS, EPHE, INCIA, University of Bordeaux, UMR5287 F-33000, Bordeaux, France
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Vidal B, Levigoureux E, Chaib S, Bouillot C, Billard T, Newman-Tancredi A, Zimmer L. Different Alterations of Agonist and Antagonist Binding to 5-HT1A Receptor in a Rat Model of Parkinson’s Disease and Levodopa-Induced Dyskinesia: A MicroPET Study. JOURNAL OF PARKINSONS DISEASE 2021; 11:1257-1269. [DOI: 10.3233/jpd-212580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background: The gold-standard treatment for Parkinson’s disease is L-DOPA, which in the long term often leads to levodopa-induced dyskinesia. Serotonergic neurons are partially responsible for this, by converting L-DOPA into dopamine leading to its uncontrolled release as a “false neurotransmitter”. The stimulation of 5-HT1A receptors can reduce involuntary movements but this mechanism is poorly understood. Objective: This study aimed to investigate the functionality of 5-HT1A receptors using positron emission tomography in hemiparkinsonian rats with or without dyskinesia induced by 3-weeks daily treatment with L-DOPA. Imaging sessions were performed “off” L-DOPA. Methods: Each rat underwent a positron emission tomography scan with [18F]F13640, a 5-HT1AR agonist which labels receptors in a high affinity state for agonists, or with [18F]MPPF, a 5-HT1AR antagonist which labels all the receptors. Results: There were decreases of [18F]MPPF binding in hemiparkinsonian rats in cortical areas. In dyskinetic animals, changes were slighter but also found in other regions. In hemiparkinsonian rats, [18F]F13640 uptake was decreased bilaterally in the globus pallidus and thalamus. On the non-lesioned side, binding was increased in the insula, the hippocampus and the amygdala. In dyskinetic animals, [18F]F13640 binding was strongly increased in cortical and limbic areas, especially in the non-lesioned side. Conclusion: These data suggest that agonist and antagonist 5-HT1A receptor-binding sites are differently modified in Parkinson’s disease and levodopa-induced dyskinesia. In particular, these observations suggest a substantial involvement of the functional state of 5-HT1AR in levodopa-induced dyskinesia and emphasize the need to characterize this state using agonist radiotracers in physiological and pathological conditions.
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Affiliation(s)
- Benjamin Vidal
- Lyon Neuroscience Research Center, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, INSERM, Lyon, France
| | - Elise Levigoureux
- Lyon Neuroscience Research Center, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
| | - Sarah Chaib
- Lyon Neuroscience Research Center, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
| | | | - Thierry Billard
- CERMEP-Imaging Platform, Bron, France
- Institute of Chemistry and Biochemistry, Université de Lyon, CNRS, Villeurbanne, France
| | | | - Luc Zimmer
- Lyon Neuroscience Research Center, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, INSERM, Lyon, France
- Hospices Civils de Lyon, Lyon, France
- CERMEP-Imaging Platform, Bron, France
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De Deurwaerdère P, Chagraoui A, Di Giovanni G. Serotonin/dopamine interaction: Electrophysiological and neurochemical evidence. PROGRESS IN BRAIN RESEARCH 2021; 261:161-264. [PMID: 33785130 DOI: 10.1016/bs.pbr.2021.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The interaction between serotonin (5-HT) and dopamine (DA) in the central nervous system (CNS) plays an important role in the adaptive properties of living animals to their environment. These are two modulatory, divergent systems shaping and regulating in a widespread manner the activity of neurobiological networks and their interaction. The concept of one interaction linking these two systems is rather elusive when looking at the mechanisms triggered by these two systems across the CNS. The great variety of their interacting mechanisms is in part due to the diversity of their neuronal origin, the density of their fibers in a given CNS region, the distinct expression of their numerous receptors in the CNS, the heterogeneity of their intracellular signaling pathway that depend on the cellular type expressing their receptors, and the state of activity of neurobiological networks, conditioning the outcome of their mutual influences. Thus, originally conceptualized as inhibition of 5-HT on DA neuron activity and DA neurotransmission, this interaction is nowadays considered as a multifaceted, mutual influence of these two systems in the regulation of CNS functions. These new ways of understanding this interaction are of utmost importance to envision the consequences of their dysfunctions underlined in several CNS diseases. It is also essential to conceive the mechanism of action of psychotropic drugs directly acting on their function including antipsychotic, antidepressant, antiparkinsonian, and drug of abuse together with the development of therapeutic strategies of Alzheimer's diseases, epilepsy, obsessional compulsive disorders. The 5-HT/DA interaction has a long history from the serendipitous discovery of antidepressants and antipsychotics to the future, rationalized treatments of CNS disorders.
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Affiliation(s)
- Philippe De Deurwaerdère
- Centre National de la Recherche Scientifique, Institut des Neurosciences Intégratives et Cognitives d'Aquitaine, UMR 5287, Bordeaux, France.
| | - Abdeslam Chagraoui
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Normandie University, UNIROUEN, INSERM U1239, Rouen, France; Department of Medical Biochemistry, Rouen University Hospital, Rouen, France
| | - Giuseppe Di Giovanni
- Laboratory of Neurophysiology, Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Msida, Malta; Neuroscience Division, School of Biosciences, Cardiff University, Cardiff, United Kingdom.
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Vegas‐Suárez S, Pisanò CA, Requejo C, Bengoetxea H, Lafuente JV, Morari M, Miguelez C, Ugedo L. 6-Hydroxydopamine lesion and levodopa treatment modify the effect of buspirone in the substantia nigra pars reticulata. Br J Pharmacol 2020; 177:3957-3974. [PMID: 32464686 PMCID: PMC7429490 DOI: 10.1111/bph.15145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND AND PURPOSE l-DOPA-induced dyskinesia (LID) is considered a major complication in the treatment of Parkinson's disease (PD). Buspirone (5-HT1A partial agonist) have shown promising results in the treatment of PD and LID, however no 5-HT-based treatment has been approved in PD. The present study was aimed to investigate how the substantia nigra pars reticulata (SNr) is affected by buspirone and whether it is a good target to study 5-HT antidyskinetic treatments. EXPERIMENTAL APPROACH Buspirone was studied using in vivo single-unit, electrocorticogram, local field potential recordings along with microdialysis and immunohistochemistry in naïve/sham, 6-hydroxydopamine (6-OHDA)-lesioned or 6-OHDA-lesioned and l-DOPA-treated (6-OHDA/l-DOPA) rats. KEY RESULTS Local buspirone inhibited SNr neuron activity in all groups. However, systemic buspirone reduced burst activity in 6-OHDA-lesioned rats (with or without l-DOPA treatment), whereas 8-OH-DPAT, a full 5-HT1A agonist induced larger inhibitory effects in sham animals. Neither buspirone nor 8-OH-DPAT markedly modified the low-frequency oscillatory activity in the SNr or synchronization within the SNr with the cortex. In addition, local perfusion of buspirone increased GABA and glutamate release in the SNr of naïve and 6-OHDA-lesioned rats but no effect in 6-OHDA/l-DOPA rats. In the 6-OHDA/l-DOPA group, increased 5-HT transporter and decreased 5-HT1A receptor expression was found. CONCLUSIONS AND IMPLICATIONS The effects of buspirone in SNr are influenced by dopamine loss and l-DOPA treatment. The present results suggest that the regulation of burst activity of the SNr induced by DA loss may be a good target to test new drugs for the treatment of PD and LID.
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Affiliation(s)
- Sergio Vegas‐Suárez
- Department of Pharmacology, Faculty of Medicine and NursingUniversity of the Basque Country (UPV/EHU)LeioaSpain
- Autonomic and Movement Disorders Unit, Neurodegenerative DiseasesBiocruces Health Research InstituteBarakaldoBizkaiaSpain
| | - Clarissa Anna Pisanò
- Department of Medical Sciences, Section of PharmacologyUniversity of FerraraFerraraItaly
- Neuroscience Center and National Institute of NeuroscienceUniversity of FerraraFerraraItaly
| | - Catalina Requejo
- LaNCE, Department of NeuroscienceUniversity of the Basque Country (UPV/EHU)LeioaSpain
| | - Harkaitz Bengoetxea
- LaNCE, Department of NeuroscienceUniversity of the Basque Country (UPV/EHU)LeioaSpain
| | - Jose Vicente Lafuente
- LaNCE, Department of NeuroscienceUniversity of the Basque Country (UPV/EHU)LeioaSpain
| | - Michele Morari
- Department of Medical Sciences, Section of PharmacologyUniversity of FerraraFerraraItaly
- Neuroscience Center and National Institute of NeuroscienceUniversity of FerraraFerraraItaly
| | - Cristina Miguelez
- Department of Pharmacology, Faculty of Medicine and NursingUniversity of the Basque Country (UPV/EHU)LeioaSpain
- Autonomic and Movement Disorders Unit, Neurodegenerative DiseasesBiocruces Health Research InstituteBarakaldoBizkaiaSpain
| | - Luisa Ugedo
- Department of Pharmacology, Faculty of Medicine and NursingUniversity of the Basque Country (UPV/EHU)LeioaSpain
- Autonomic and Movement Disorders Unit, Neurodegenerative DiseasesBiocruces Health Research InstituteBarakaldoBizkaiaSpain
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Dietrich AD, Koeppen JA, Buhmann C, Pötter-Nerger M, Pinnschmidt HO, Oehlwein C, Oehlwein M, Mittmann K, Gerloff C, Engel AK, Westphal M, Schaper M, Hamel W, Moll CKE, Gulberti A. Sex Disparities in the Self-Evaluation of Subthalamic Deep Brain Stimulation Effects on Mood and Personality in Parkinson's Disease Patients. Front Neurol 2020; 11:776. [PMID: 32849228 PMCID: PMC7412792 DOI: 10.3389/fneur.2020.00776] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/24/2020] [Indexed: 01/08/2023] Open
Abstract
Changes in personality are one of the main concerns Parkinson's disease (PD) patients raise when facing the decision to undergo neurosurgery for deep brain stimulation (DBS) of the subthalamic nucleus (STN). While clinical instruments for monitoring functional changes following DBS surgery are well-established in the daily therapeutic routine, personality issues are far less systematically encompassed. Moreover, while sex disparities in the outcomes of STN-DBS therapy have been reported, little is known about the different effects that DBS treatment may have on mood and personality traits in female and male patients. To this aim, the effect of STN-DBS on personality traits was assessed in 46 PD patients (12 women and 34 men) by means of the Freiburg Personality Inventory. The Becks Depression Inventory (BDI-I) and the Parkinson's Disease Questionnaire were used to evaluate patients' level of depression and quality of life (QoL). Patients completed the questionnaires a few days before, within the first year, and 2 years after surgery. The 12 personality traits defined by the FPI-R questionnaire did not change significantly after STN-DBS surgery (p = 0.198). Women declared higher depression scores through all study stages (p = 0.009), but also showed a stronger QoL amelioration after surgery than male patients (p = 0.022). The BDI-I scores of female patients clearly correlated with their levodopa equivalent daily dose (LEDD; r = 0.621, p = 0.008). Remarkably, in both male and female patients, higher pre-operative LEDDs were related to worse post-operative QoL scores (p = 0.034). These results mitigate the concerns about systematic personality changes due to STN-DBS treatment in PD patients and encourage an early DBS approach, before severe levodopa-induced sequelae may irreparably compromise the patients' QoL. In the future, more focus should lie on sex-related effects, since female patients seem to profit more than male patients from STN-DBS, in terms of reduced depressive symptoms associated with a reduction of the LEDD and amelioration of QoL. These aspects may help to redress the sex imbalance in PD patients treated with DBS, given that women are still strongly under-represented.
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Affiliation(s)
- Amelie D Dietrich
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes A Koeppen
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Carsten Buhmann
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Monika Pötter-Nerger
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hans O Pinnschmidt
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christian Oehlwein
- Neurological Outpatient Clinic for Parkinson's Disease and Deep Brain Stimulation, Gera, Germany
| | - Marita Oehlwein
- Neurological Outpatient Clinic for Parkinson's Disease and Deep Brain Stimulation, Gera, Germany
| | - Katrin Mittmann
- Neurological Outpatient Clinic for Parkinson's Disease and Deep Brain Stimulation, Gera, Germany
| | - Christian Gerloff
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas K Engel
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Manfred Westphal
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Miriam Schaper
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Wolfgang Hamel
- Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christian K E Moll
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alessandro Gulberti
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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11
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Paredes-Rodriguez E, Vegas-Suarez S, Morera-Herreras T, De Deurwaerdere P, Miguelez C. The Noradrenergic System in Parkinson's Disease. Front Pharmacol 2020; 11:435. [PMID: 32322208 PMCID: PMC7157437 DOI: 10.3389/fphar.2020.00435] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/20/2020] [Indexed: 12/16/2022] Open
Abstract
Nowadays it is well accepted that in Parkinson’s disease (PD), the neurodegenerative process occurs in stages and that damage to other areas precedes the neuronal loss in the substantia nigra pars compacta, which is considered a pathophysiological hallmark of PD. This heterogeneous and progressive neurodegeneration may explain the diverse symptomatology of the disease, including motor and non-motor alterations. In PD, one of the first areas undergoing degeneration is the locus coeruleus (LC). This noradrenergic nucleus provides extensive innervation throughout the brain and plays a fundamental neuromodulator role, participating in stress responses, emotional memory, and control of motor, sensory, and autonomic functions. Early in the disease, LC neurons suffer modifications that can condition the effectiveness of pharmacological treatments, and importantly, can lead to the appearance of common non-motor symptomatology. The noradrenergic system also exerts anti-inflammatory and neuroprotective effect on the dopaminergic degeneration and noradrenergic damage can consequently condition the progress of the disease. From the pharmacological point of view, it is also important to understand how the noradrenergic system performs in PD, since noradrenergic medication is often used in these patients, and drug interactions can take place when combining them with the gold standard drug therapy in PD, L-3,4-dihydroxyphenylalanine (L-DOPA). This review provides an overview about the functional status of the noradrenergic system in PD and its contribution to the efficacy of pharmacological-based treatments. Based on preclinical and clinical publications, a special attention will be dedicated to the most prevalent non-motor symptoms of the disease.
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Affiliation(s)
- Elena Paredes-Rodriguez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,Autonomic and Movement Disorders Unit, Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Sergio Vegas-Suarez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,Autonomic and Movement Disorders Unit, Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Teresa Morera-Herreras
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,Autonomic and Movement Disorders Unit, Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Philippe De Deurwaerdere
- Centre National de la Recherche scientifique, Institut des Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA UMR 5287), Bordeaux, France
| | - Cristina Miguelez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain.,Autonomic and Movement Disorders Unit, Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
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12
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Chagraoui A, Boulain M, Juvin L, Anouar Y, Barrière G, De Deurwaerdère P. L-DOPA in Parkinson's Disease: Looking at the "False" Neurotransmitters and Their Meaning. Int J Mol Sci 2019; 21:ijms21010294. [PMID: 31906250 PMCID: PMC6981630 DOI: 10.3390/ijms21010294] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/28/2019] [Accepted: 12/30/2019] [Indexed: 12/13/2022] Open
Abstract
L-3,4-dihydroxyphenylalanine (L-DOPA) has been successfully used in the treatment of Parkinson’s disease (PD) for more than 50 years. It fulfilled the criteria to cross the blood–brain barrier and counteract the biochemical defect of dopamine (DA). It remarkably worked after some adjustments in line with the initial hypothesis, leaving a poor place to the plethora of mechanisms involving other neurotransmitters or mechanisms of action beyond newly synthesized DA itself. Yet, its mechanism of action is far from clear. It involves numerous distinct cell populations and does not mimic the mechanism of action of dopaminergic agonists. L-DOPA-derived DA is mainly released by serotonergic neurons as a false neurotransmitter, and serotonergic neurons are involved in L-DOPA-induced dyskinesia. The brain pattern and magnitude of DA extracellular levels together with this status of false neurotransmitters suggest that the striatal effects of DA via this mechanism would be minimal. Other metabolic products coming from newly formed DA or through the metabolism of L-DOPA itself could be involved. These compounds can be trace amines and derivatives. They could accumulate within the terminals of the remaining monoaminergic neurons. These “false neurotransmitters,” also known for some of them as inducing an “amphetamine-like” mechanism, could reduce the content of biogenic amines in terminals of monoaminergic neurons, thereby impairing the exocytotic process of monoamines including L-DOPA-induced DA extracellular outflow. The aim of this review is to present the mechanism of action of L-DOPA with a specific attention to “false neurotransmission.”
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Affiliation(s)
- Abdeslam Chagraoui
- Neuronal and Neuroendocrine Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Normandie University, UNIROUEN, INSERM, U1239 CHU de Rouen, 76000 Rouen, France; (A.C.); (Y.A.)
- Department of Medical Biochemistry, Rouen University Hospital, CHU de Rouen, 76000 Rouen, France
| | - Marie Boulain
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 33076 Bordeaux CEDEX, France; (M.B.); (L.J.); (G.B.)
| | - Laurent Juvin
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 33076 Bordeaux CEDEX, France; (M.B.); (L.J.); (G.B.)
| | - Youssef Anouar
- Neuronal and Neuroendocrine Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Normandie University, UNIROUEN, INSERM, U1239 CHU de Rouen, 76000 Rouen, France; (A.C.); (Y.A.)
| | - Grégory Barrière
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 33076 Bordeaux CEDEX, France; (M.B.); (L.J.); (G.B.)
| | - Philippe De Deurwaerdère
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 33076 Bordeaux CEDEX, France; (M.B.); (L.J.); (G.B.)
- Correspondence: ; Tel.: +33-0-557-57-12-90
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13
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Sheldon RS, Sandhu RK. The Search for the Genes of Vasovagal Syncope. Front Cardiovasc Med 2019; 6:175. [PMID: 31850372 PMCID: PMC6892747 DOI: 10.3389/fcvm.2019.00175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/14/2019] [Indexed: 11/29/2022] Open
Abstract
Only humans faint, and not all do so. Syncope tends to recur, and the predisposition to syncope can persist over many decades. Observations such as these have suggested that there may be a genetic predisposition to vasovagal syncope. It seems to have a high prevalence in some families; having a parent who faints increases the likelihood of an offspring fainting, and this is increased even further if both biological parents faint. Numerous studies have correlated a number of genotypes with positive tilt tests. However, the control subjects are usually those who faint, but have negative tilt tests, making the conclusions about association with the clinical phenotype less certain. Twin studies, highly focused genome-wide association studies, and gene duplicate studies all suggest there are sites in the genome that associate with vasovagal syncope, although the specific genes, pathways, and proteins are unknown. A recent large, candidate gene study of kindreds with high, multigenerational prevalence of the vasovagal syncope identified 3 genes that associate with vasovagal syncope. Our understanding of the genetic correlates of vasovagal syncope is in its infancy, with much to be understood.
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Affiliation(s)
- Robert S Sheldon
- The Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada.,The Mazankowski Heart Institute, University of Alberta, Edmonton, AB, Canada
| | - Roopinder K Sandhu
- The Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada.,The Mazankowski Heart Institute, University of Alberta, Edmonton, AB, Canada
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14
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Sheldon R, Rose MS, Ritchie D, Martens K, Maxey C, Jagers J, Parboosingh J, Gerull B. Genetic Association Study in Multigenerational Kindreds With Vasovagal Syncope: Evidence for Involvement of Sex-Specific Serotonin Signaling. Circ Arrhythm Electrophysiol 2019; 12:e006884. [PMID: 30636478 DOI: 10.1161/circep.118.006884] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Several studies suggest that vasovagal syncope has a genetic origin, but this is unclear. We assessed whether plausible gene variants associate with vasovagal syncope. METHODS We studied 160 subjects in 9 kindreds comprising 82 fainters and 78 controls. The diagnosis was ascertained with the Calgary Syncope Score. Common genetic variants were genotyped for 12 genes for vascular signaling, potassium channels, the HTR1A(serotonin 5-HT1A receptor), SLC6A4(serotonin reuptake transporter), and COMT(catecholamine O-methyltransferase). Sex-specific associations between genotypes and phenotypes were tested. RESULTS In 9 out of 12 variants, there was no significant association between genotype and phenotype. However, the HTR1A(-1019) G alleles associated with syncope in males, but not in females ( P=0.005). CC and GG males had 9% versus 77% likelihoods of syncope. The SLC6A4 promoter L alleles associated with decreased syncope in males but increased in females ( P=0.059). The LL and SS males had 25% and 47% syncope likelihoods, whereas females had 75% and 50% syncope likelihoods. The COMT c.472 A alleles associated with decreased syncope in males but increased in females ( P=0.017). The GG and AA males had 50% and 15% syncope likelihoods, whereas females had 52% and 73% syncope likelihoods. CONCLUSIONS There is a sex-dependent effect of alleles of serotonin signaling and vasovagal syncope, supporting the serotonin hypothesis of the physiology of vasovagal syncope.
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Affiliation(s)
- Robert Sheldon
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - M Sarah Rose
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - Debbie Ritchie
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - Kristina Martens
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - Connor Maxey
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - Jennie Jagers
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.)
| | - Jillian Parboosingh
- Alberta Children's Hospital Research Institute, University of Calgary, Canada (J.P.)
| | - Brenda Gerull
- Libin Cardiovascular Institute of Calgary, Alberta, Canada (R.S., M.S.R., D.R., K.M., C.M., J.J., B.G.).,Department Kardiovasculare Genetik, University Hospital Würzburg and University Würzburg, Germany (B.G.)
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15
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Vegas-Suarez S, Paredes-Rodriguez E, Aristieta A, Lafuente JV, Miguelez C, Ugedo L. Dysfunction of serotonergic neurons in Parkinson's disease and dyskinesia. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 146:259-279. [PMID: 31349930 DOI: 10.1016/bs.irn.2019.06.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Parkinson's disease (PD) is characterized by the degeneration of dopaminergic neurons in the substantia nigra, the depletion of striatal dopamine and the presence of Lewy aggregates containing alpha-synuclein. Clinically, there are motor impairments involving cardinal movement symptoms, bradykinesia, resting tremor, muscle rigidity, and postural abnormalities, along with non-motor symptoms such as sleep, behavior and mood disorders. The current treatment for PD focuses on restoring dopaminergic neurotransmission by l-3,4-dihydroxyphenylalanine (levodopa), which loses therapeutic efficacy and induces disabling abnormal involuntary movements known as levodopa-induced dyskinesia (LID) after several years. Evidence indicates that the pathophysiology of both PD and LID disorders is also associated with the dysfunctional activity of the serotonergic (5-HT) neurons that may be responsible for motor and non-motor disturbances. The main population of 5-HT neurons is located in the dorsal raphe nuclei (DRN), which provides extensive innervation to almost the entire neuroaxis and controls multiple functions in the brain. The degeneration of DRN 5-HT neurons occurs in early PD. These neurons can also take exogenous levodopa to transform it into dopamine, which may disturb neuron activity. This review will provide an overview of the underlying mechanisms responsible for 5-HT dysfunction and its clinical relevance in PD and dyskinesia.
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Affiliation(s)
- Sergio Vegas-Suarez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Elena Paredes-Rodriguez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Asier Aristieta
- Université de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France; Centre National de la Recherche Scientifique, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France
| | - Jose V Lafuente
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Nanosurgery, Biocruces Health Research Institute, Barakaldo, Spain
| | - Cristina Miguelez
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain
| | - Luisa Ugedo
- Department of Pharmacology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases, Biocruces Health Research Institute, Barakaldo, Spain.
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16
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Li X, Liu Q, Zhu D, Che Y, Feng X. Preparation of levodopa-loaded crystalsomes through thermally induced crystallization reverses functional deficits in Parkinsonian mice. Biomater Sci 2019; 7:1623-1631. [DOI: 10.1039/c8bm01098f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The prepared levodopa loaded crystalsomes are nanoscale crystals and controlling levodopa release which improving MPTP-induced behavioral impairments and pathological features of mice.
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Affiliation(s)
- Xinyu Li
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences
- Nankai University
| | - Qianqian Liu
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences
- Nankai University
| | - Dashuai Zhu
- Nankai University
- School of medicine
- Tianjin
- China
| | - Yongzhe Che
- Nankai University
- School of medicine
- Tianjin
- China
| | - Xizeng Feng
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Sciences
- Nankai University
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17
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Kamińska K, Lenda T, Konieczny J, Wardas J, Lorenc-Koci E. Interactions of the tricyclic antidepressant drug amitriptyline with L-DOPA in the striatum and substantia nigra of unilaterally 6-OHDA-lesioned rats. Relevance to motor dysfunction in Parkinson's disease. Neurochem Int 2018; 121:125-139. [PMID: 30290201 DOI: 10.1016/j.neuint.2018.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/24/2018] [Accepted: 10/02/2018] [Indexed: 10/28/2022]
Abstract
Antidepressant drugs are recommended for the treatment of Parkinson's disease (PD)-associated depression but their role in the modulation of L-DOPA-induced behavioral and neurochemical markers is poorly explored. The aim of the present study was to examine the impact of the tricyclic antidepressant amitriptyline and L-DOPA, administered chronically alone or in combination, on rotational behavior, monoamine levels and binding of radioligands to their transporters in the dopaminergic brain structures of unilaterally 6-OHDA-lesioned rats. Binding of [3H]nisoxetine to noradrenaline transporter (NET), [3H]GBR 12,935 to dopamine transporter (DAT) and [3H]citalopram to serotonin transporter (SERT) were analyzed by autoradiography. Amitriptyline administered alone did not induce rotational behavior but in combination with L-DOPA increased the number of contralateral rotations much more strongly than L-DOPA alone. The combined treatment also significantly increased the tissue dopamine (DA) content in the ipsilateral striatum and substantia nigra (SN) vs. L-DOPA alone. 6-OHDA-mediated lesion of nigrostriatal DA neurons drastically reduced DAT and NET bindings in the ipsilateral striatum. In the ipsilateral SN, DAT binding decreased while NET binding rose. SERT binding increased significantly mainly in the SN. Amitriptyline administered alone or jointly with L-DOPA had no effect on DAT binding on the lesioned side, significantly decreased SERT binding in the striatum and SN while NET binding only in the SN. Since in the DA-denervated striatum, SERT is mainly responsible for reuptake of L-DOPA-derived DA while in the SN, SERT and NET are involved, the inhibition of these transporters by antidepressant drugs may improve dopaminergic transmission and consequently motor behavior.
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Affiliation(s)
- Kinga Kamińska
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neuro-Psychopharmacology, 31-343, Kraków, Smętna Street 12, Poland
| | - Tomasz Lenda
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neuro-Psychopharmacology, 31-343, Kraków, Smętna Street 12, Poland
| | - Jolanta Konieczny
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neuro-Psychopharmacology, 31-343, Kraków, Smętna Street 12, Poland
| | - Jadwiga Wardas
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neuro-Psychopharmacology, 31-343, Kraków, Smętna Street 12, Poland
| | - Elżbieta Lorenc-Koci
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neuro-Psychopharmacology, 31-343, Kraków, Smętna Street 12, Poland.
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18
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Di Giovanni G, Chagraoui A, Puginier E, Galati S, De Deurwaerdère P. Reciprocal interaction between monoaminergic systems and the pedunculopontine nucleus: Implication in the mechanism of L-DOPA. Neurobiol Dis 2018; 128:9-18. [PMID: 30149181 DOI: 10.1016/j.nbd.2018.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/19/2018] [Accepted: 08/23/2018] [Indexed: 01/31/2023] Open
Abstract
The pedunculopontine nucleus (PPN) is part of the mesencephalic locomotor region (MLR) and has been involved in the control of gait, posture, locomotion, sleep, and arousal. It likely participates in some motor and non-motor symptoms of Parkinson's disease and is regularly proposed as a surgical target to ameliorate gait, posture and sleep disorders in Parkinsonian patients. The PPN overlaps with the monoaminergic systems including dopamine, serotonin and noradrenaline in the modulation of the above-mentioned functions. All these systems are involved in Parkinson's disease and the mechanism of the anti-Parkinsonian agents, mostly L-DOPA. This suggests that PPN interacts with monoaminergic neurons and vice versa. Some evidence indicates that the PPN sends cholinergic, glutamatergic and even gabaergic inputs to mesencephalic dopaminergic cells, with the data regarding serotonergic or noradrenergic cells being less well known. Similarly, the control exerted by the PPN on dopaminergic neurons, is multiple and complex, and more extensively explored than the other monoaminergic systems. The data on the influence of monoaminergic systems on PPN neuron activity are rather scarce. While there is evidence that the PPN influences the therapeutic response of L-DOPA, it is still difficult to discerne the reciprocal action of the PPN and monoaminergic systems in this action. Additional data are required to better understand the functional organization of monoaminergic inputs to the MLR including the PPN to get a clearer picture of their interaction.
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Affiliation(s)
- Giuseppe Di Giovanni
- Department of Physiology & Biochemistry, Faculty of Medicine and Surgery, University of Malta, Msida, Malta; Neuroscience Division, School of Biosciences, Cardiff University, Cardiff, UK.
| | - Abdeslam Chagraoui
- Normandie Univ, UNIROUEN, INSERM, U1239, CHU Rouen, Neuronal and Neuroendocrine Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Rouen, France; Department of Medical Biochemistry, Rouen University Hospital, Rouen, France
| | - Emilie Puginier
- Normandie Univ, UNIROUEN, INSERM, U1239, CHU Rouen, Neuronal and Neuroendocrine Differentiation and Communication Laboratory, Institute for Research and Innovation in Biomedicine of Normandy (IRIB), Rouen, France; Department of Medical Biochemistry, Rouen University Hospital, Rouen, France
| | - Salvatore Galati
- Parkinson and movement Disorders Center Neurocenter of Southern Switzerland, Ospedale Civico di Lugano, Lugano, Switzerland
| | - Philippe De Deurwaerdère
- Centre National de la Recherche Scientifique (Unité Mixte de Recherche 5287), 146 rue Léo Saignat, B.P.281, F-33000 Bordeaux Cedex, France.
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