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Li Y, Wang Q, Zhang X, Zheng R, Li D, Wang Y. Characterization of D1R and D2R neuronal subpopulations in the globus pallidus interna: Implications for Parkinson's disease pathogenesis. Brain Res 2024; 1845:149174. [PMID: 39168263 DOI: 10.1016/j.brainres.2024.149174] [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: 05/17/2024] [Revised: 08/03/2024] [Accepted: 08/17/2024] [Indexed: 08/23/2024]
Abstract
Parkinson's disease (PD) ranks as the second most prevalent and rapidly growing neurodegenerative disorder. As a primary output nucleus within the basal ganglia (BG), the globus pallidus interna (GPi) is a key structure in BG information processing. It is also a key target for deep brain stimulation (DBS) to alleviate motor symptoms of PD. Previous studies have identifiedPD patients exhibiting abnormal neuronal activity in the GPi. On the other hand, various types of dopamine receptor (DR)-positive neurons have been identified within the GPi. However, the electrophysiological properties of specific DR-positive neurons within the GPi and their alterations in PD have not been addressed. In the present study, we used whole-cell patch-clamp recordings to identify two neuronal subpopulations within the GPi, dopamine D1 receptor (D1R)-positive, and dopamine D2 receptor (D2R)-positive neurons, which exhibited distinct electrophysiological properties. Additionally, significant alterations of electrophysiological properties of D2R-positive neurons within the GPi were observed in 6-hydroxydopamine (6-OHDA)-lesioned mice. These data suggest that the distinct electrophysiological properties of specific DR-positive neurons and their abnormal alteration in the GPi may be associated with PD's pathogenesis.
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Affiliation(s)
- Yaqian Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Qianwen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Xueping Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Ruobing Zheng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Derong Li
- Departments of Basic Medical Sciences, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Yong Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
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Sarkar S, Biswas A, Ansari S, Choudhury S, Banerjee R, Chatterjee S, Dey S, Kumar H. Association of dopamine receptor D3 polymorphism with Levodopa-induced Dyskinesia: A study on Parkinson's disease patients from India. Neurosci Lett 2024; 825:137706. [PMID: 38431040 DOI: 10.1016/j.neulet.2024.137706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/15/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
INTRODUCTION Levodopa-induced dyskinesia (LID) is a debilitating motor feature in a subset of patients with Parkinson's disease (PD) after prolonged therapeutic administration of levodopa. Preliminary animal and human studies are suggestive of a key role of dopamine type 3 (D3) receptor polymorphism (Ser9Gly; rs6280) in LID. Its contribution to development of LID among Indian PD patients has remained relatively unexplored and merits further investigation. METHODS AND MATERIALS 200 well-characterised PD patients (100 without LID and 100 with LID) and 100 age-matched healthy controls were recruited from the outpatient department of Institute of Neurosciences Kolkata. MDS-UPDRS (Unified Parkinson's Disease Rating Scale from International Movement Disorder Society) Part III and AIMS (abnormal involuntary movement scale) were performed for estimation of severity of motor features and LID respectively in the ON state of the disease. Participants were analysed for the presence of Ser9Gly single nucleotide variant (SNV) (rs6280) by polymerase chain reaction followed by restriction fragment length polymorphism techniques. RESULTS The frequency of AA genotype (serine type) was more frequently present in PD patients with LID compared to PD patients without LID (50 % vs 28 %; P = 0.002; OR = 2.57, 95 % CI: 1.43 - 4.62). The abnormal involuntary movement scale score was significantly higher in PD patients with AA genotype compared to carriers of glycine allele (AG + GG) (4.08 ± 3.35; P = 0.002). CONCLUSION We observed a significant association of serine type SNV (rs6280) in D3 receptor gene in a cohort of PD patients with LID from India. More severe motor severity was found in patients with glycine substitution of the same SNV. The current study emphasised the role of D3 receptor in the pathogenesis of LID.
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Affiliation(s)
- Swagata Sarkar
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India; Department of Physiology, University of Calcutta, Kolkata, India
| | - Arindam Biswas
- Molecular Biology & Clinical Neuroscience Division, National Neurosciences Centre Calcutta, Kolkata, India
| | - Sabbir Ansari
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Supriyo Choudhury
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Rebecca Banerjee
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India
| | - Suparna Chatterjee
- Department of Pharmacology, Institute of Postgraduate Medical Education & Research Kolkata, Kolkata, India
| | - Sanjit Dey
- Department of Physiology, University of Calcutta, Kolkata, India.
| | - Hrishikesh Kumar
- Department of Neurology, Institute of Neurosciences Kolkata, Kolkata, India.
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Stan TL, Ronaghi A, Barrientos SA, Halje P, Censoni L, Garro-Martínez E, Nasretdinov A, Malinina E, Hjorth S, Svensson P, Waters S, Sahlholm K, Petersson P. Neurophysiological treatment effects of mesdopetam, pimavanserin and clozapine in a rodent model of Parkinson's disease psychosis. Neurotherapeutics 2024; 21:e00334. [PMID: 38368170 PMCID: PMC10937958 DOI: 10.1016/j.neurot.2024.e00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/29/2024] [Accepted: 02/06/2024] [Indexed: 02/19/2024] Open
Abstract
Psychosis in Parkinson's disease is a common phenomenon associated with poor outcomes. To clarify the pathophysiology of this condition and the mechanisms of antipsychotic treatments, we have here characterized the neurophysiological brain states induced by clozapine, pimavanserin, and the novel prospective antipsychotic mesdopetam in a rodent model of Parkinson's disease psychosis, based on chronic dopaminergic denervation by 6-OHDA lesions, levodopa priming, and the acute administration of an NMDA antagonist. Parallel recordings of local field potentials from eleven cortical and sub-cortical regions revealed shared neurophysiological treatment effects for the three compounds, despite their different pharmacological profiles, involving reversal of features associated with the psychotomimetic state, such as a reduction of aberrant high-frequency oscillations in prefrontal structures together with a decrease of abnormal synchronization between different brain regions. Other drug-induced neurophysiological features were more specific to each treatment, affecting network oscillation frequencies and entropy, pointing to discrete differences in mechanisms of action. These findings indicate that neurophysiological characterization of brain states is particularly informative when evaluating therapeutic mechanisms in conditions involving symptoms that are difficult to assess in rodents such as psychosis, and that mesdopetam should be further explored as a potential novel antipsychotic treatment option for Parkinson psychosis.
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Affiliation(s)
- Tiberiu Loredan Stan
- The Group for Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Abdolaziz Ronaghi
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden
| | - Sebastian A Barrientos
- The Group for Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Pär Halje
- The Group for Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Luciano Censoni
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden
| | - Emilio Garro-Martínez
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden; Department of Medical and Translational Biology, Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
| | - Azat Nasretdinov
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden
| | - Evgenya Malinina
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden
| | - Stephan Hjorth
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden
| | - Peder Svensson
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden
| | - Susanna Waters
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden
| | - Kristoffer Sahlholm
- Department of Medical and Translational Biology, Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden; Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Per Petersson
- The Group for Integrative Neurophysiology, Department of Medical and Translational Biology, Umeå University, Umeå, Sweden; The Group for Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Science, Lund University, Lund, Sweden.
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Bono F, Tomasoni Z, Mutti V, Sbrini G, Kumar R, Longhena F, Fiorentini C, Missale C. G Protein-Dependent Activation of the PKA-Erk1/2 Pathway by the Striatal Dopamine D1/D3 Receptor Heteromer Involves Beta-Arrestin and the Tyrosine Phosphatase Shp-2. Biomolecules 2023; 13:473. [PMID: 36979407 PMCID: PMC10046256 DOI: 10.3390/biom13030473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
The heteromer composed of dopamine D1 and D3 receptors (D1R-D3R) has been defined as a structure able to trigger Erk1/2 and Akt signaling in a G protein-independent, beta-arrestin 1-dependent way that is physiologically expressed in the ventral striatum and is likely involved in the control of locomotor activity. Indeed, abnormal levels of D1R-D3R heteromer in the dorsal striatum have been correlated with the development of L-DOPA-induced dyskinesia (LID) in Parkinson's disease patients, a motor complication associated with striatal D1R signaling, thus requiring Gs protein and PKA activity to activate Erk1/2. Therefore, to clarify the role of the D1R/D3R heteromer in LID, we investigated the signaling pathway induced by the heteromer using transfected cells and primary mouse striatal neurons. Collectively, we found that in both the cell models, D1R/D3R heteromer-induced activation of Erk1/2 exclusively required the D1R molecular effectors, such as Gs protein and PKA, with the contribution of the phosphatase Shp-2 and beta-arrestins, indicating that heterodimerization with the D3R abolishes the specific D3R-mediated signaling but strongly allows D1R signals. Therefore, while in physiological conditions the D1R/D3R heteromer could represent a mechanism that strengthens the D1R activity, its pathological expression may contribute to the abnormal PKA-Shp-2-Erk1/2 pathway connected with LID.
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Affiliation(s)
- Federica Bono
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Zaira Tomasoni
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Veronica Mutti
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Giulia Sbrini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Rajesh Kumar
- Seattle Children’s Research Institute, 1920 Terry Ave., Seattle, WA 98101, USA
| | - Francesca Longhena
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Chiara Fiorentini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Cristina Missale
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
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Channer B, Matt SM, Nickoloff-Bybel EA, Pappa V, Agarwal Y, Wickman J, Gaskill PJ. Dopamine, Immunity, and Disease. Pharmacol Rev 2023; 75:62-158. [PMID: 36757901 PMCID: PMC9832385 DOI: 10.1124/pharmrev.122.000618] [Citation(s) in RCA: 53] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022] Open
Abstract
The neurotransmitter dopamine is a key factor in central nervous system (CNS) function, regulating many processes including reward, movement, and cognition. Dopamine also regulates critical functions in peripheral organs, such as blood pressure, renal activity, and intestinal motility. Beyond these functions, a growing body of evidence indicates that dopamine is an important immunoregulatory factor. Most types of immune cells express dopamine receptors and other dopaminergic proteins, and many immune cells take up, produce, store, and/or release dopamine, suggesting that dopaminergic immunomodulation is important for immune function. Targeting these pathways could be a promising avenue for the treatment of inflammation and disease, but despite increasing research in this area, data on the specific effects of dopamine on many immune cells and disease processes remain inconsistent and poorly understood. Therefore, this review integrates the current knowledge of the role of dopamine in immune cell function and inflammatory signaling across systems. We also discuss the current understanding of dopaminergic regulation of immune signaling in the CNS and peripheral tissues, highlighting the role of dopaminergic immunomodulation in diseases such as Parkinson's disease, several neuropsychiatric conditions, neurologic human immunodeficiency virus, inflammatory bowel disease, rheumatoid arthritis, and others. Careful consideration is given to the influence of experimental design on results, and we note a number of areas in need of further research. Overall, this review integrates our knowledge of dopaminergic immunology at the cellular, tissue, and disease level and prompts the development of therapeutics and strategies targeted toward ameliorating disease through dopaminergic regulation of immunity. SIGNIFICANCE STATEMENT: Canonically, dopamine is recognized as a neurotransmitter involved in the regulation of movement, cognition, and reward. However, dopamine also acts as an immune modulator in the central nervous system and periphery. This review comprehensively assesses the current knowledge of dopaminergic immunomodulation and the role of dopamine in disease pathogenesis at the cellular and tissue level. This will provide broad access to this information across fields, identify areas in need of further investigation, and drive the development of dopaminergic therapeutic strategies.
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Affiliation(s)
- Breana Channer
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Stephanie M Matt
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Emily A Nickoloff-Bybel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Vasiliki Pappa
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Yash Agarwal
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Jason Wickman
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Peter J Gaskill
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
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6
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Interaction of the preferential D3 agonist (+)PHNO with dopamine D3-D2 receptor heterodimers and diverse classes of monoamine receptors: Relevance for PET imaging. Eur J Pharmacol 2022; 925:175016. [DOI: 10.1016/j.ejphar.2022.175016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 04/21/2022] [Accepted: 05/04/2022] [Indexed: 11/21/2022]
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Bandopadhyay R, Mishra N, Rana R, Kaur G, Ghoneim MM, Alshehri S, Mustafa G, Ahmad J, Alhakamy NA, Mishra A. Molecular Mechanisms and Therapeutic Strategies for Levodopa-Induced Dyskinesia in Parkinson's Disease: A Perspective Through Preclinical and Clinical Evidence. Front Pharmacol 2022; 13:805388. [PMID: 35462934 PMCID: PMC9021725 DOI: 10.3389/fphar.2022.805388] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 02/21/2022] [Indexed: 12/20/2022] Open
Abstract
Parkinson's disease (PD) is the second leading neurodegenerative disease that is characterized by severe locomotor abnormalities. Levodopa (L-DOPA) treatment has been considered a mainstay for the management of PD; however, its prolonged treatment is often associated with abnormal involuntary movements and results in L-DOPA-induced dyskinesia (LID). Although LID is encountered after chronic administration of L-DOPA, the appearance of dyskinesia after weeks or months of the L-DOPA treatment has complicated our understanding of its pathogenesis. Pathophysiology of LID is mainly associated with alteration of direct and indirect pathways of the cortico-basal ganglia-thalamic loop, which regulates normal fine motor movements. Hypersensitivity of dopamine receptors has been involved in the development of LID; moreover, these symptoms are worsened by concurrent non-dopaminergic innervations including glutamatergic, serotonergic, and peptidergic neurotransmission. The present study is focused on discussing the recent updates in molecular mechanisms and therapeutic approaches for the effective management of LID in PD patients.
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Affiliation(s)
- Ritam Bandopadhyay
- Department of Pharmacology, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Nainshi Mishra
- Department of Pharmacology, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Ruhi Rana
- Department of Pharmacology, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Gagandeep Kaur
- Department of Pharmacology, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Gulam Mustafa
- College of Pharmacy (Boys), Al-Dawadmi Campus, Shaqra University, Riyadh, Saudi Arabia
| | - Javed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Nabil. A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Awanish Mishra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)—Guwahati, Guwahati, India
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Oh T, Daadi ES, Kim J, Daadi EW, Chen PJ, Roy-Choudhury G, Bohmann J, Blass BE, Daadi MM. Dopamine D3 receptor ligand suppresses the expression of levodopa-induced dyskinesia in nonhuman primate model of parkinson's disease. Exp Neurol 2022; 347:113920. [PMID: 34762921 DOI: 10.1016/j.expneurol.2021.113920] [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: 10/27/2021] [Accepted: 11/03/2021] [Indexed: 11/04/2022]
Abstract
Parkinson's disease (PD) is a complex multisystem, chronic and so far incurable disease with significant unmet medical needs. The incidence of PD increases with aging and the expected burden will continue to escalate with our aging population. Since its discovery in the 1961 levodopa has remained the gold standard pharmacotherapy for PD. However, the progressive nature of the neurodegenerative process in and beyond the nigrostriatal system causes a multitude of side effects, including levodopa-induced dyskinesia within 5 years of therapy. Attenuating dyskinesia has been a significant challenge in the clinical management of PD. We report on a small molecule that eliminates the expression of levodopa-induced dyskinesia and significantly improves PD-like symptoms. The lead compound PD13R we discovered is a dopamine D3 receptor partial agonist with high affinity and selectivity, orally active and with desirable drug-like properties. Future studies are aimed at developing this lead compound for treating PD patients with dyskinesia.
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Affiliation(s)
- Thomas Oh
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Elyas S Daadi
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Jeffrey Kim
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA; Cell Systems & Anatomy, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Etienne W Daadi
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Peng-Jen Chen
- Department of Pharmaceutical Sciences, Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, PA, USA
| | - Gourav Roy-Choudhury
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA
| | | | - Benjamin E Blass
- Department of Pharmaceutical Sciences, Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, PA, USA
| | - Marcel M Daadi
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA; Cell Systems & Anatomy, University of Texas Health at San Antonio, San Antonio, TX, USA; Radiology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA.
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9
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D3 Receptors and PET Imaging. Curr Top Behav Neurosci 2022; 60:251-275. [PMID: 35711027 DOI: 10.1007/7854_2022_374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This chapter encapsulates a short introduction to positron emission tomography (PET) imaging and the information gained by using this technology to detect changes of the dopamine 3 receptor (D3R) at the molecular level in vivo. We will discuss available D3R radiotracers, emphasizing [11C]PHNO. The focus, however, will be on PET findings in conditions including substance abuse, obesity, traumatic brain injury, schizophrenia, Parkinson's disease, and aging. Finally, there is a discussion about progress in producing next-generation selective D3R radiotracers.
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10
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Bono F, Mutti V, Tomasoni Z, Sbrini G, Missale C, Fiorentini C. Recent Advances in Dopamine D3 Receptor Heterodimers: Focus on Dopamine D3 and D1 Receptor-Receptor Interaction and Striatal Function. Curr Top Behav Neurosci 2022; 60:47-72. [PMID: 35505059 DOI: 10.1007/7854_2022_353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
G protein-coupled receptors (GPCR) heterodimers represent new entities with unique pharmacological, signalling, and trafficking properties, with specific distribution restricted to those cells where the two interacting receptors are co-expressed. Like other GPCR, dopamine D3 receptors (D3R) directly interact with various receptors to form heterodimers: data showing the D3R physical interaction with both GPCR and non-GPCR receptors have been provided including D3R interaction with other dopamine receptors. The aim of this chapter is to summarize current knowledge of the distinct roles of heterodimers involving D3R, focusing on the D3R interaction with the dopamine D1 receptor (D1R): the D1R-D3R heteromer, in fact, has been postulated in both ventral and motor striatum. Interestingly, since both D1R and D3R have been implicated in several pathological conditions, including schizophrenia, motor dysfunctions, and substance use disorders, the D1R-D3R heteromer may represent a potential drug target for the treatment of these diseases.
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Affiliation(s)
- Federica Bono
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Veronica Mutti
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Zaira Tomasoni
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Giulia Sbrini
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Cristina Missale
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Chiara Fiorentini
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.
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11
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Sokoloff P, Le Foll B. A Historical Perspective on the Dopamine D3 Receptor. Curr Top Behav Neurosci 2022; 60:1-28. [PMID: 35467293 DOI: 10.1007/7854_2022_315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Before 1990, the multiplicity of dopamine receptors beyond D1 and D2 had remained a controversial concept, despite its substantial clinical implications, at a time when it was widely accepted that dopamine interacted with only two receptor subtypes, termed D1 and D2, differing one from the other by their pharmacological specificity and opposite effects on adenylyl cyclase. It was also generally admitted that the therapeutic efficacy of antipsychotics resulted from blockade of D2 receptors. Thanks to molecular biology techniques, the D3 receptor could be characterized as a distinct molecular entity having a restricted anatomical gene expression and different signaling, which could imply peculiar functions in controlling cognitive and emotional behaviors. Due to the structural similarities of D2 and D3 receptors, the search for D3-selective compounds proved to be difficult, but nevertheless led to the identification of fairly potent and in vitro and in vivo selective compounds. The latter permitted to confirm a role of D3 receptors in motor functions, addiction, cognition, and schizophrenia, which paved the way for the development of new drugs for the treatment of psychiatric disorders.
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Affiliation(s)
| | - Bernard Le Foll
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, ON, Canada. .,Campbell Family Mental Health Research Institute, CAMH, Toronto, ON, Canada. .,Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada. .,Departments of Family and Community Medicine, University of Toronto, Toronto, ON, Canada. .,Institute of Medical Science, University of Toronto, Toronto, ON, Canada. .,Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada. .,Waypoint Research Institute, Waypoint Centre for Mental Health Care, 5, Penetanguishene, ON, Canada.
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Hutny M, Hofman J, Klimkowicz-Mrowiec A, Gorzkowska A. Current Knowledge on the Background, Pathophysiology and Treatment of Levodopa-Induced Dyskinesia-Literature Review. J Clin Med 2021; 10:jcm10194377. [PMID: 34640395 PMCID: PMC8509231 DOI: 10.3390/jcm10194377] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/02/2021] [Accepted: 09/22/2021] [Indexed: 02/07/2023] Open
Abstract
Levodopa remains the primary drug for controlling motor symptoms in Parkinson’s disease through the whole course, but over time, complications develop in the form of dyskinesias, which gradually become more frequent and severe. These abnormal, involuntary, hyperkinetic movements are mainly characteristic of the ON phase and are triggered by excess exogenous levodopa. They may also occur during the OFF phase, or in both phases. Over the past 10 years, the issue of levodopa-induced dyskinesia has been the subject of research into both the substrate of this pathology and potential remedial strategies. The purpose of the present study was to review the results of recent research on the background and treatment of dyskinesia. To this end, databases were reviewed using a search strategy that included both relevant keywords related to the topic and appropriate filters to limit results to English language literature published since 2010. Based on the selected papers, the current state of knowledge on the morphological, functional, genetic and clinical features of levodopa-induced dyskinesia, as well as pharmacological, genetic treatment and other therapies such as deep brain stimulation, are described.
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Affiliation(s)
- Michał Hutny
- Students’ Scientific Society, Department of Neurorehabilitation, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland;
- Correspondence:
| | - Jagoda Hofman
- Students’ Scientific Society, Department of Neurorehabilitation, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland;
| | - Aleksandra Klimkowicz-Mrowiec
- Department of Internal Medicine and Gerontology, Faculty of Medicine, Medical College, Jagiellonian University, 30-688 Kraków, Poland;
| | - Agnieszka Gorzkowska
- Department of Neurorehabilitation, Faculty of Medical Sciences, School of Medicine, Medical University of Silesia, 40-752 Katowice, Poland;
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Scheggi S, Rossi F, Corsi S, Fanni S, Tronci E, Ludovica C, Vargiu R, Gambarana C, Muñoz A, Stancampiano R, Björklund A, Carta M. BDNF Overexpression Increases Striatal D3 Receptor Level at Striatal Neurons and Exacerbates D1-Receptor Agonist-Induced Dyskinesia. JOURNAL OF PARKINSONS DISEASE 2021; 10:1503-1514. [PMID: 32651332 DOI: 10.3233/jpd-202061] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND We recently showed that striatal overexpression of brain derived neurotrophic factor (BDNF) by adeno-associated viral (AAV) vector exacerbated L-DOPA-induced dyskinesia (LID) in 6-OHDA-lesioned rats. An extensive sprouting of striatal serotonergic terminals accompanied this effect, accounting for the increased susceptibility to LID. OBJECTIVE We set to investigate whether the BDNF effect was restricted to LID, or extended to dyskinesia induced by direct D1 receptor agonists. METHODS Unilaterally 6-OHDA-lesioned rats received a striatal injection of an AAV vector to induce BDNF or GFP overexpression. Eight weeks later, animals received daily treatments with a low dose of SKF82958 (0.02 mg/kg s.c.) and development of dyskinesia was evaluated. At the end of the experiment, D1 and D3 receptors expression levels and D1 receptor-dependent signaling pathways were measured in the striatum. RESULTS BDNF overexpression induced significant worsening of dyskinesia induced by SKF82958 compared to the GFP group and increased the expression of D3 receptor at striatal level, even in absence of pharmacological treatment; by contrast, D1 receptor levels were not affected. In BDNF-overexpressing striata, SKF82958 administration resulted in increased levels of D1-D3 receptors co-immunoprecipitation and increased phosphorylation levels of Thr34 DARPP-32 and ERK1/2. CONCLUSION Here we provide evidence for a functional link between BDNF, D3 receptors and D1-D3 receptor close interaction in the augmented susceptibility to dyskinesia in 6-OHDA-lesioned rats. We suggest that D1-D3 receptors interaction may be instrumental in driving the molecular alterations underlying the appearance of dyskinesia; its disruption may be a therapeutic strategy for treating dyskinesia in PD patients.
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Affiliation(s)
- Simona Scheggi
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Francesca Rossi
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Sara Corsi
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Silvia Fanni
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Elisabetta Tronci
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Congiu Ludovica
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Romina Vargiu
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
| | - Carla Gambarana
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Ana Muñoz
- Department of Morphological Sciences, CIMUS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Anders Björklund
- Department of Experimental Medical Science, Wallenberg Neuroscience Center, Division of Neurobiology, Lund University, Lund, Sweden
| | - Manolo Carta
- Department of Biomedical Sciences, Cagliari University, Cagliari, Italy
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14
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Fabbrini A, Guerra A. Pathophysiological Mechanisms and Experimental Pharmacotherapy for L-Dopa-Induced Dyskinesia. J Exp Pharmacol 2021; 13:469-485. [PMID: 33953618 PMCID: PMC8092630 DOI: 10.2147/jep.s265282] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 03/30/2021] [Indexed: 12/21/2022] Open
Abstract
L-dopa-induced dyskinesia (LID) is the most frequent motor complication associated with chronic L-dopa treatment in Parkinson’s disease (PD). Recent advances in the understanding of the pathophysiological mechanisms underlying LID suggest that abnormalities in multiple neurotransmitter systems, in addition to dopaminergic nigrostriatal denervation and altered dopamine release and reuptake dynamics at the synaptic level, are involved in LID development. Increased knowledge of neurobiological LID substrates has led to the development of several drug candidates to alleviate this motor complication. However, with the exception of amantadine, none of the pharmacological therapies tested in humans have demonstrated clinically relevant beneficial effects. Therefore, LID management is still one of the most challenging problems in the treatment of PD patients. In this review, we first describe the known pathophysiological mechanisms of LID. We then provide an updated report of experimental pharmacotherapies tested in clinical trials of PD patients and drugs currently under study to alleviate LID. Finally, we discuss available pharmacological LID treatment approaches and offer our opinion of possible issues to be clarified and future therapeutic strategies.
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Affiliation(s)
- Andrea Fabbrini
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
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15
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Ferré S, Guitart X, Quiroz C, Rea W, García-Malo C, Garcia-Borreguero D, Allen RP, Earley CJ. Akathisia and Restless Legs Syndrome: Solving the Dopaminergic Paradox. Sleep Med Clin 2021; 16:249-267. [PMID: 33985651 DOI: 10.1016/j.jsmc.2021.02.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Akathisia is an urgent need to move that is associated with treatment with dopamine receptor blocking agents (DRBAs) and with restless legs syndrome (RLS). The pathogenetic mechanism of akathisia has not been resolved. This article proposes that it involves an increased presynaptic dopaminergic transmission in the ventral striatum and concomitant strong activation of postsynaptic dopamine D1 receptors, which form complexes (heteromers) with dopamine D3 and adenosine A1 receptors. It also proposes that in DRBA-induced akathisia, increased dopamine release depends on inactivation of autoreceptors, whereas in RLS it depends on a brain iron deficiency-induced down-regulation of striatal presynaptic A1 receptors.
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Affiliation(s)
- Sergi Ferré
- Integrative Neurobiology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Triad Building, 333 Cassell Drive, Baltimore, MD 21224, USA.
| | - Xavier Guitart
- Integrative Neurobiology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Triad Building, 333 Cassell Drive, Baltimore, MD 21224, USA
| | - César Quiroz
- Integrative Neurobiology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Triad Building, 333 Cassell Drive, Baltimore, MD 21224, USA
| | - William Rea
- Integrative Neurobiology Section, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Triad Building, 333 Cassell Drive, Baltimore, MD 21224, USA
| | - Celia García-Malo
- Sleep Research Institute, Paseo de la Habana 151, Madrid 28036, Spain
| | | | - Richard P Allen
- Department of Neurology, Johns Hopkins University, Johns Hopkins Bayview Medical Center, 5501 Hopkins Bayview Circle, Baltimore, MD 21224, USA
| | - Christopher J Earley
- Department of Neurology, Johns Hopkins University, Johns Hopkins Bayview Medical Center, 5501 Hopkins Bayview Circle, Baltimore, MD 21224, USA
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16
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Lanza K, Bishop C. Dopamine D3 Receptor Plasticity in Parkinson's Disease and L-DOPA-Induced Dyskinesia. Biomedicines 2021; 9:biomedicines9030314. [PMID: 33808538 PMCID: PMC8003204 DOI: 10.3390/biomedicines9030314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 11/21/2022] Open
Abstract
Parkinson’s Disease (PD) is characterized by primary and secondary plasticity that occurs in response to progressive degeneration and long-term L-DOPA treatment. Some of this plasticity contributes to the detrimental side effects associated with chronic L-DOPA treatment, namely L-DOPA-induced dyskinesia (LID). The dopamine D3 receptor (D3R) has emerged as a promising target in LID management as it is upregulated in LID. This upregulation occurs primarily in the D1-receptor-bearing (D1R) cells of the striatum, which have been repeatedly implicated in LID manifestation. D3R undergoes dynamic changes both in PD and in LID, making it difficult to delineate D3R’s specific contributions, but recent genetic and pharmacologic tools have helped to clarify its role in LID. The following review will discuss these changes, recent advances to better clarify D3R in both PD and LID and potential steps for translating these findings.
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Affiliation(s)
- Kathryn Lanza
- Department of Physiology, Northwestern University, Chicago, IL 60201, USA;
| | - Christopher Bishop
- Department of Psychology, Binghamton University, Binghamton, NY 13902, USA
- Correspondence:
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17
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Frey KA, Bohnen NILJ. Molecular Imaging of Neurodegenerative Parkinsonism. PET Clin 2021; 16:261-272. [PMID: 33589385 DOI: 10.1016/j.cpet.2020.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Advances in molecular PET imaging of neurodegenerative parkinsonism are reviewed with focus on neuropharmacologic radiotracers depicting terminals of selectively vulnerable neurons in these conditions. Degeneration and losses of dopamine, norepinephrine, serotonin, and acetylcholine imaging markers thus far do not differentiate among the parkinsonian conditions. Recent studies performed with [18F]fluorodeoxyglucose PET are limited by the need for automated image analysis tools and by lack of routine coverage for this imaging indication in the United States. Ongoing research engages use of novel molecular modeling and in silico methods for design of imaging ligands targeting these specific proteinopathies.
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Affiliation(s)
- Kirk A Frey
- Department of Radiology (Nuclear Medicine and Molecular Imaging), University of Michigan, 1500 East Medical Center Drive, Room B1-G505 UH, Ann Arbor, MI 48109-5028, USA; Department of Neurology, University of Michigan, 1500 East Medical Center Drive, Room B1-G505 UH, Ann Arbor, MI 48109-5028, USA.
| | - Nicolaas I L J Bohnen
- Department of Radiology (Nuclear Medicine and Molecular Imaging), University of Michigan, 24 Frank Lloyd Wright Drive, Box 362, Ann Arbor, MI 48105, USA; Department of Neurology, University of Michigan, 24 Frank Lloyd Wright Drive, Box 362, Ann Arbor, MI 48105, USA; Ann Arbor Veterans Administration Medical Center, Ann Arbor, MI, USA
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18
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Goud NS, Bhattacharya A, Joshi RK, Nagaraj C, Bharath RD, Kumar P. Carbon-11: Radiochemistry and Target-Based PET Molecular Imaging Applications in Oncology, Cardiology, and Neurology. J Med Chem 2021; 64:1223-1259. [PMID: 33499603 DOI: 10.1021/acs.jmedchem.0c01053] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The positron emission tomography (PET) molecular imaging technique has gained its universal value as a remarkable tool for medical diagnosis and biomedical research. Carbon-11 is one of the promising radiotracers that can report target-specific information related to its pharmacology and physiology to understand the disease status. Currently, many of the available carbon-11 (t1/2 = 20.4 min) PET radiotracers are heterocyclic derivatives that have been synthesized using carbon-11 inserted different functional groups obtained from primary and secondary carbon-11 precursors. A spectrum of carbon-11 PET radiotracers has been developed against many of the upregulated and emerging targets for the diagnosis, prognosis, prediction, and therapy in the fields of oncology, cardiology, and neurology. This review focuses on the carbon-11 radiochemistry and various target-specific PET molecular imaging agents used in tumor, heart, brain, and neuroinflammatory disease imaging along with its associated pathology.
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Affiliation(s)
- Nerella Sridhar Goud
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
| | - Ahana Bhattacharya
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
| | - Raman Kumar Joshi
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
| | - Chandana Nagaraj
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
| | - Rose Dawn Bharath
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
| | - Pardeep Kumar
- Department of Neuroimaging and Interventional Radiology (NIIR), National Institute of Mental Health and Neuro Sciences (NIMHANS), Bengaluru 560 029, India
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19
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Cumming P, Gründer G, Brinson Z, Wong DF. Applications, Advances, and Limitations of Molecular Imaging of Brain Receptors. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00063-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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20
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Lanza K, Centner A, Coyle M, Del Priore I, Manfredsson FP, Bishop C. Genetic suppression of the dopamine D3 receptor in striatal D1 cells reduces the development of L-DOPA-induced dyskinesia. Exp Neurol 2020; 336:113534. [PMID: 33249031 DOI: 10.1016/j.expneurol.2020.113534] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 12/17/2022]
Abstract
Parkinson's Disease (PD) is symptomatically managed with L-DOPA but chronic use results in L-DOPA-induced dyskinesia (LID) characterized by abnormal involuntary movements (AIMs). In LID, dopamine D3 receptors (D3R) are upregulated on D1 receptor (D1R)-bearing medium spiny neurons where the can synergistically drive downstream signaling and motor behaviors. Despite evidence implying D1R-D3R cooperativity in LID, the dyskinesiogenic role of D3R has never been directly tested. To this end, we developed a specific cre-dependent microRNA (miRNA) to irreversibly prevent D3R upregulation in D1R striatal cells. D1-Cre rats received unilateral 6-hydroxydopamine lesions. Three weeks later, rats received an adeno-associated virus expressing either D3R miRNA or a scrambled (SCR) miRNA delivered into the striatum. After 4 weeks, rats received chronic L-DOPA (6 mg/kg) or vehicle. AIMs development and motor behaviors were assayed throughout treatment. At the conclusion of the experiment, efficacy and fidelity of the miRNA strategy was analyzed using in situ hybridization (ISH). ISH analyses demonstrated that D1R+/D3R+ cells were upregulated in LID and that the selective D3R miRNA reduced D1R+/D3R+ co-expression. Importantly, silencing of D3R also significantly attenuated LID development without impacting L-DOPA efficacy or other locomotion. These data highlight a dyskinesiogenic role of D3R within D1R cells in LID and highlight aberrant D1R-D3R interactions as targets of LID management.
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Affiliation(s)
- Kathryn Lanza
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University - State University of New York, Binghamton, NY, USA.
| | - Ashley Centner
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University - State University of New York, Binghamton, NY, USA
| | - Michael Coyle
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University - State University of New York, Binghamton, NY, USA
| | - Isabella Del Priore
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University - State University of New York, Binghamton, NY, USA
| | | | - Christopher Bishop
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University - State University of New York, Binghamton, NY, USA
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21
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An integrative model of Parkinson's disease treatment including levodopa pharmacokinetics, dopamine kinetics, basal ganglia neurotransmission and motor action throughout disease progression. J Pharmacokinet Pharmacodyn 2020; 48:133-148. [PMID: 33084988 DOI: 10.1007/s10928-020-09723-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 10/05/2020] [Indexed: 01/08/2023]
Abstract
Levodopa is considered the gold standard treatment of Parkinson's disease. Although very effective in alleviating symptoms at their onset, its chronic use with the progressive neuronal denervation in the basal ganglia leads to a decrease in levodopa's effect duration and to the appearance of motor complications. This evolution challenges the establishment of optimal regimens to manage the symptoms as the disease progresses. Based on up-to-date pathophysiological and pharmacological knowledge, we developed an integrative model for Parkinson's disease to evaluate motor function in response to levodopa treatment as the disease progresses. We combined a pharmacokinetic model of levodopa to a model of dopamine's kinetics and a neurocomputational model of basal ganglia. The parameter values were either measured directly or estimated from human and animal data. The concentrations and behaviors predicted by our model were compared to available information and data. Using this model, we were able to predict levodopa plasma concentration, its related dopamine concentration in the brain and the response performance of a motor task for different stages of disease.
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22
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Castela I, Hernandez LF. Shedding light on dyskinesias. Eur J Neurosci 2020; 53:2398-2413. [DOI: 10.1111/ejn.14777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/30/2020] [Accepted: 05/01/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Ivan Castela
- HM‐CINAC Hospital Universitario HM Puerta del Sur Fundación de Investigación HM Hospitales Madrid Spain
- Network Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED) Carlos III Health Institute Madrid Spain
| | - Ledia F. Hernandez
- HM‐CINAC Hospital Universitario HM Puerta del Sur Fundación de Investigación HM Hospitales Madrid Spain
- Network Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED) Carlos III Health Institute Madrid Spain
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Kong Y, Zhou H, Feng H, Zhuang J, Wen T, Zhang C, Sun B, Wang J, Guan Y. Elucidating the Relationship Between Diabetes Mellitus and Parkinson's Disease Using 18F-FP-(+)-DTBZ, a Positron-Emission Tomography Probe for Vesicular Monoamine Transporter 2. Front Neurosci 2020; 14:682. [PMID: 32760240 PMCID: PMC7372188 DOI: 10.3389/fnins.2020.00682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 06/03/2020] [Indexed: 01/25/2023] Open
Abstract
Diabetes mellitus (DM) and Parkinson’s disease (PD) have been and will continue to be two common chronic diseases globally that are difficult to diagnose during the prodromal phase. Current molecular genetics, cell biological, and epidemiological evidences have shown the correlation between PD and DM. PD shares the same pathogenesis pathways and pathological factors with DM. In addition, β-cell reduction, which can cause hyperglycemia, is a striking feature of DM. Recent studies indicated that hyperglycemia is highly relevant to the pathologic changes in PD. However, further correlation between DM and PD remains to be investigated. Intriguingly, polycystic monoamine transporter 2 (VMAT2), which is co-expressed in dopaminergic neurons and β cells, is responsible for taking up dopamine into the presynaptic vesicles and can specifically bind to the β cells. Furthermore, we have summarized the specific molecular and diagnostic functions of VMAT2 for the two diseases reported in this review. Therefore, VMAT2 can be applied as a target probe for positron emission tomography (PET) imaging to detect β-cell and dopamine level changes, which can contribute to the diagnosis of DM and PD during the prodromal phase. Targeting VMAT2 with the molecular probe 18F-FP-(+)-DTBZ can be an entry point for the β cell mass (BCM) changes in DM at the molecular level, to clarify the potential relationship between DM and PD. VMAT2 has promising clinical significance in investigating the pathogenesis, early diagnosis, and treatment evaluation of the two diseases.
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Affiliation(s)
- Yanyan Kong
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
| | - Haicong Zhou
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai, China
| | - Hu Feng
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai, China
| | - Junyi Zhuang
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai, China
| | - Tieqiao Wen
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai, China
| | - Chencheng Zhang
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bomin Sun
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiao Wang
- Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, Shanghai, China
| | - Yihui Guan
- PET Center, Huashan Hospital, Fudan University, Shanghai, China
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24
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Waters S, Sonesson C, Svensson P, Tedroff J, Carta M, Ljung E, Gunnergren J, Edling M, Svanberg B, Fagerberg A, Kullingsjö J, Hjorth S, Waters N. Preclinical Pharmacology of [2-(3-Fluoro-5-Methanesulfonyl-phenoxy)Ethyl](Propyl)amine (IRL790), a Novel Dopamine Transmission Modulator for the Treatment of Motor and Psychiatric Complications in Parkinson Disease. J Pharmacol Exp Ther 2020; 374:113-125. [PMID: 32358046 DOI: 10.1124/jpet.119.264226] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/02/2020] [Indexed: 12/23/2022] Open
Abstract
IRL790 ([2-(3-fluoro-5-methanesulfonylphenoxy)ethyl](propyl)amine, mesdopetam) is a novel compound in development for the clinical management of motor and psychiatric disabilities in Parkinson disease. The discovery of IRL790 was made applying a systems pharmacology approach based on in vivo response profiling. The chemical design idea was to develop a new type of DA D3/D2 receptor type antagonist built on agonist rather than antagonist structural motifs. We hypothesized that such a dopamine antagonist with physicochemical properties similar to agonists would exert antidyskinetic and antipsychotic effects in states of dysregulated dopaminergic signaling while having little negative impact on physiologic dopamine transmission and, hence, minimal liability for side effects related to dopamine-dependent functions. At the level of in vivo pharmacology, IRL790 displays balancing effects on aberrant motor phenotypes, reducing l-DOPA-induced dyskinesias in the rodent 6-hydroxydopamine lesion model and reducing psychostimulant-induced locomotor hyperactivity elicited by pretreatment with either d-amphetamine or dizocilpine, without negatively impacting normal motor performance. Thus, IRL790 has the ability to normalize the behavioral phenotype in hyperdopaminergic as well as hypoglutamatergic states. Neurochemical and immediate early gene (IEG) response profiles suggest modulation of DA neurotransmission, with some features, such as increased DA metabolites and extracellular DA, shared by atypical antipsychotics and others, such as increased frontal cortex IEGs, unique to IRL790. IRL790 also increases extracellular levels of acetylcholine in the prefrontal cortex and ventral hippocampus. At the receptor level, IRL790 appears to act as a preferential DA D3 receptor antagonist. Computational docking studies support preferential affinity at D3 receptors with an agonist-like binding mode. SIGNIFICANCE STATEMENT: This paper reports preclinical pharmacology along with molecular modeling results on IRL790, a novel compound in clinical development for the treatment of motor and psychiatric complications in advanced Parkinson disease. IRL790 is active in models of perturbed dopaminergic and glutamatergic signaling, including rodent 6-hydroxydopamine l-DOPA-induced dyskinesias and psychostimulant-induced hyperactivity, in a dose range that does not impair normal behavior. This effect profile is attributed to interactions at dopamine D2/D3 receptors, with a 6- to 8-fold preference for the D3 subtype.
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Affiliation(s)
- Susanna Waters
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Clas Sonesson
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Peder Svensson
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Joakim Tedroff
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Manolo Carta
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Elisabeth Ljung
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Jenny Gunnergren
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Malin Edling
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Boel Svanberg
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Anne Fagerberg
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Johan Kullingsjö
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Stephan Hjorth
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
| | - Nicholas Waters
- Integrative Research Laboratories Sweden AB, Göteborg, Sweden (S.W., C.S., P.S., J.T., E.L., J.G., M.E., B.S., A.F., J.K., N.W.); Pharmacilitator AB, Vallda, Sweden (S.H.); Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden (S.H.); Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy (M.C.); Department of Pharmacology, Gothenburg University, Gothenburg, Sweden (S.W.); and Department of Clin Neuroscience, Karolinska Institute, Stockholm, Sweden (J.T.)
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D3 dopamine receptors and a missense mutation of fatty acid amide hydrolase linked in mouse and men: implication for addiction. Neuropsychopharmacology 2020; 45:745-752. [PMID: 31775159 PMCID: PMC7075906 DOI: 10.1038/s41386-019-0580-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/16/2022]
Abstract
The endocannabinoid and dopaminergic systems have independently been implicated in substance use disorder and obesity. We investigated a potential interaction between genetically inherited variation in fatty acid amide hydrolase (FAAH, C385A), which metabolizes the cannabis-like endocannabinoid anandamide, and dopaminergic system, measured by dopamine receptor levels and mRNA. Binding of the dopamine D3 preferring probe [C-11]-(+)-PHNO was measured with positron emission tomography (PET) in 79 human subjects genotyped for the FAAH C385A polymorphism (36/79 AC + AA). Autoradiography with [H-3]-(+)-PHNO and in situ hybridization with a D3-specific S-35 riboprobe were carried out in 30 knock-in mice with the FAAH C385A polymorphism (20/30 AC + AA). We found that the FAAH genetic variant C385A was associated with significantly higher (+)-PHNO binding in both humans and in knock-in mice, and this effect was restricted to D3 selective brain regions (limbic striatum, globus pallidus, and ventral pallidum (9-14%; p < 0.04) in humans and Islands of Calleja (28%; p = 0.036) in mice). In situ hybridization with a D3-specific S-35 riboprobe in FAAH knock-in C385A mice confirmed significantly increased D3 receptor mRNA across examined regions (7-44%; p < 0.02). The association of reduced FAAH function with higher dopamine D3 receptors in human and mouse brain provide a mechanistic link between two brain systems that have been implicated in addiction-risk. This may explain the greater vulnerability for addiction and obesity in individuals with C385A genetic variant and by extension, suggest that a D3 antagonism strategy in substance use disorders should consider FAAH C385A polymorphism.
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Smart K, Gallezot JD, Nabulsi N, Labaree D, Zheng MQ, Huang Y, Carson RE, Hillmer AT, Worhunsky PD. Separating dopamine D 2 and D 3 receptor sources of [ 11C]-(+)-PHNO binding potential: Independent component analysis of competitive binding. Neuroimage 2020; 214:116762. [PMID: 32201327 DOI: 10.1016/j.neuroimage.2020.116762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/30/2020] [Accepted: 03/16/2020] [Indexed: 12/13/2022] Open
Abstract
Development of medications selective for dopamine D2 or D3 receptors is an active area of research in numerous neuropsychiatric disorders including addiction and Parkinson's disease. The positron emission tomography (PET) radiotracer [11C]-(+)-PHNO, an agonist that binds with high affinity to both D2 and D3 receptors, has been used to estimate relative receptor subtype occupancy by drugs based on a priori knowledge of regional variation in the expression of D2 and D3 receptors. The objective of this work was to use a data-driven independent component analysis (ICA) of receptor blocking scans to separate D2-and D3-related signal in [11C]-(+)-PHNO binding data in order to improve the precision of subtype specific measurements of binding and occupancy. Eight healthy volunteers underwent [11C]-(+)-PHNO PET scans at baseline and at two time points following administration of the D3-preferring antagonist ABT-728 (150-1000 mg). Parametric binding potential (BPND) images were analyzed as four-dimensional image series using ICA to extract two independent sources of variation in [11C]-(+)-PHNO BPND. Spatial source maps for each component were consistent with respective regional patterns of D2-and D3-related binding. ICA-derived occupancy estimates from each component were similar to D2-and D3-specific occupancy estimated from a region-based approach (intraclass correlation coefficients > 0.95). ICA-derived estimates of D3 receptor occupancy improved quality of fit to a single site binding model. Furthermore, ICA-derived estimates of the regional fraction of [11C]-(+)-PHNO binding related to D3 receptors was generated for each subject and values showed good agreement with region-based model estimates and prior literature values. In summary, ICA successfully separated D2-and D3-related components of the [11C]-(+)-PHNO binding signal, establishing this approach as a powerful data-driven method to quantify distinct biological features from PET data composed of mixed data sources.
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Affiliation(s)
- Kelly Smart
- Yale PET Center, Yale School of Medicine, New Haven, CT, USA
| | | | - Nabeel Nabulsi
- Yale PET Center, Yale School of Medicine, New Haven, CT, USA
| | - David Labaree
- Yale PET Center, Yale School of Medicine, New Haven, CT, USA
| | | | - Yiyun Huang
- Yale PET Center, Yale School of Medicine, New Haven, CT, USA
| | | | - Ansel T Hillmer
- Yale PET Center, Yale School of Medicine, New Haven, CT, USA; Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA.
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Yang P, Perlmutter JS, Benzinger TLS, Morris JC, Xu J. Dopamine D3 receptor: A neglected participant in Parkinson Disease pathogenesis and treatment? Ageing Res Rev 2020; 57:100994. [PMID: 31765822 PMCID: PMC6939386 DOI: 10.1016/j.arr.2019.100994] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/13/2019] [Accepted: 11/20/2019] [Indexed: 12/20/2022]
Abstract
Parkinson disease (PD) is a neurodegenerative disorder characterized by motor and non-motor symptoms which relentlessly and progressively lead to substantial disability and economic burden. Pathologically, these symptoms follow the loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) associated with abnormal α-synuclein (α-Syn) deposition as cytoplasmic inclusions called Lewy bodies in pigmented brainstem nuclei, and in dystrophic neurons in striatal and cortical regions (Lewy neurites). Pharmacotherapy for PD focuses on improving quality of life and primarily targets dopaminergic pathways. Dopamine acts through two families of receptors, dopamine D1-like and dopamine D2-like; dopamine D3 receptors (D3R) belong to dopamine D2 receptor (D2R) family. Although D3R's precise role in the pathophysiology and treatment of PD has not been determined, we present evidence suggesting an important role for D3R in the early development and occurrence of PD. Agonist activation of D3R increases dopamine concentration, decreases α-Syn accumulation, enhances secretion of brain derived neurotrophic factors (BDNF), ameliorates neuroinflammation, alleviates oxidative stress, promotes neurogenesis in the nigrostriatal pathway, interacts with D1R to reduce PD associated motor symptoms and ameliorates side effects of levodopa (L-DOPA) treatment. Furthermore, D3R mutations can predict PD age of onset and prognosis of PD treatment. The role of D3R in PD merits further research. This review elucidates the potential role of D3R in PD pathogenesis and therapy.
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Affiliation(s)
- Pengfei Yang
- Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA
| | - Joel S Perlmutter
- Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA; Department of Neurology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA; Department of Neuroscience, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA; Department of Physical Therapy, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA; Department of Occupational Therapy, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA
| | - Tammie L S Benzinger
- Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA
| | - John C Morris
- Department of Neurology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA
| | - Jinbin Xu
- Department of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St. Louis, MO 63110, USA.
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Cabreira V, Soares-da-Silva P, Massano J. Contemporary Options for the Management of Motor Complications in Parkinson's Disease: Updated Clinical Review. Drugs 2019; 79:593-608. [PMID: 30905034 DOI: 10.1007/s40265-019-01098-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a chronic, progressive condition affecting around 1% of the population older than 60 years. Upon long-term treatment with levodopa, the mainstay of treatment in PD, most patients, especially younger ones exposed to higher doses, will experience symptoms related to end-of-dose deterioration, peak-dose dyskinesias, and other motor fluctuations. Therapeutic strategies are grounded on modification of oral levodopa pharmacokinetics to extend levodopa benefit and development of new routes of drug delivery (e.g., levodopa/carbidopa intestinal gel infusion) or long-acting formulations of existing dopaminergic drugs to prolong the duration of striatal dopamine receptors stimulation. As our understanding of the pathophysiology of motor complications evolves, our therapeutic armamentarium is actively expanding and the focus of research is now actively pointing to the new non-dopaminergic agents acting both within the basal ganglia and in other brain regions (e.g., drugs acting on glutamate, GABA, serotonin, and calcium channels). Despite the fact that trials comparing the different therapeutic strategies are lacking, we aimed at devising practical evidence- and experience-guided suggestions for the clinical management of motor complications, emphasizing that this should always be an individualized endeavor. This review summarizes the pharmacological management of motor complications in PD, including new formulations and routes of delivery, and the newer released drugs such as istradefylline, opicapone, safinamide, and zonisamide. Advanced therapeutic strategies for selected cases such as treatment with apomorphine and surgical techniques (deep brain stimulation) are also discussed. A comprehensive knowledge of the available options and evidence is fundamental for the successful management of these challenging complications.
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Affiliation(s)
- Verónica Cabreira
- Department of Neurology, Centro Hospitalar Universitário de S. João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.,Department of Clinical Neurosciences and Mental Health, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Patrício Soares-da-Silva
- Department of Biomedicine, Pharmacology and Therapeutics Unit, Faculty of Medicine, University of Porto, Porto, Portugal.,MedInUP, Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal.,Department of Research and Development, BIAL, Portela & Cª S.A., S. Mamede do Coronado, Portugal
| | - João Massano
- Department of Neurology, Centro Hospitalar Universitário de S. João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal. .,Department of Clinical Neurosciences and Mental Health, Faculty of Medicine, University of Porto, Porto, Portugal.
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Pfaff S, Philippe C, Nics L, Berroterán-Infante N, Pallitsch K, Rami-Mark C, Weidenauer A, Sauerzopf U, Willeit M, Mitterhauser M, Hacker M, Wadsak W, Pichler V. Toward the Optimization of (+)-[ 11C]PHNO Synthesis: Time Reduction and Process Validation. CONTRAST MEDIA & MOLECULAR IMAGING 2019; 2019:4292596. [PMID: 31656452 PMCID: PMC6791232 DOI: 10.1155/2019/4292596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 07/19/2019] [Accepted: 08/30/2019] [Indexed: 11/17/2022]
Abstract
(+)-[11C]PHNO, a dopamine D2/3 receptor agonistic radiotracer, is applied for investigating the dopaminergic system via positron emission tomography (PET). An improved understanding of neuropsychiatric disorders associated with dysfunctions in the dopamine system and the underlying mechanism is a necessity in order to promote the development of new potential therapeutic drugs. In contrast to other broadly applied 11C-radiopharmaceuticals, the production of this radiotracer requires a challenging four-step radiosynthesis involving harsh reaction conditions and reactants as well as an inert atmosphere. Consequently, the production is prone to errors and troubleshooting after failed radiosyntheses remains time consuming. Hence, we aimed to optimize the radiosynthesis of (+)-[11C]PHNO for achieving better activity yields without loss of product quality. Therefore, we synthesized (+)-[11C]PHNO and omitted all heating and cooling steps leading to higher activity yields. As a result, radiosynthesis fully conducted at room temperature led to a time-reduced production procedure that saves about 5 min, which is an appreciable decay-prevention of around 15% of the activity yield. Additionally, we established a troubleshooting protocol by investigating reaction intermediates, byproducts, and impurities. Indeed, partial runs enabled the assignment of byproducts to their associated error source. Finally, we were able to generate a decision tree facilitating error detection in (+)-[11C]PHNO radiosynthesis.
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Affiliation(s)
- Sarah Pfaff
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Cécile Philippe
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Lukas Nics
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Neydher Berroterán-Infante
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | | | - Christina Rami-Mark
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Ana Weidenauer
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Vienna, Austria
| | - Ulrich Sauerzopf
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Vienna, Austria
| | - Matthäus Willeit
- Department of Psychiatry and Psychotherapy, Division of General Psychiatry, Medical University of Vienna, Vienna, Austria
| | - Markus Mitterhauser
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
- Ludwig-Boltzmann-Institute Applied Diagnostics, Vienna, Austria
| | - Marcus Hacker
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Wadsak
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
- CBmed GmbH-Center for Biomarker Research in Medicine, Graz, Austria
| | - Verena Pichler
- Department of Biomedical Imaging and Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
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Receptor Ligands as Helping Hands to L-DOPA in the Treatment of Parkinson's Disease. Biomolecules 2019; 9:biom9040142. [PMID: 30970612 PMCID: PMC6523988 DOI: 10.3390/biom9040142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/05/2019] [Accepted: 04/06/2019] [Indexed: 12/12/2022] Open
Abstract
Levodopa (LD) is the most effective drug in the treatment of Parkinson’s disease (PD). However, although it represents the “gold standard” of PD therapy, LD can cause side effects, including gastrointestinal and cardiovascular symptoms as well as transient elevated liver enzyme levels. Moreover, LD therapy leads to LD-induced dyskinesia (LID), a disabling motor complication that represents a major challenge for the clinical neurologist. Due to the many limitations associated with LD therapeutic use, other dopaminergic and non-dopaminergic drugs are being developed to optimize the treatment response. This review focuses on recent investigations about non-dopaminergic central nervous system (CNS) receptor ligands that have been identified to have therapeutic potential for the treatment of motor and non-motor symptoms of PD. In a different way, such agents may contribute to extending LD response and/or ameliorate LD-induced side effects.
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Svenningsson P, Johansson A, Nyholm D, Tsitsi P, Hansson F, Sonesson C, Tedroff J. Safety and tolerability of IRL790 in Parkinson's disease with levodopa-induced dyskinesia-a phase 1b trial. NPJ Parkinsons Dis 2018; 4:35. [PMID: 30534585 PMCID: PMC6283839 DOI: 10.1038/s41531-018-0071-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/13/2018] [Indexed: 11/09/2022] Open
Abstract
IRL790 is a novel compound with psychomotor stabilizing properties primarily targeting the dopamine D3 receptor. IRL790 is developed as an experimental treatment for levodopa-induced dyskinesia (LID), impulse control disorder, and psychosis in Parkinson's disease (PD). The primary objective was to investigate the safety and tolerability of IRL790 in PD patients with LID in a randomized controlled trial. PD patients with peak-dose dyskinesia were randomized to placebo or IRL790 treatment (1:3 ratio) for 4 weeks. Study drug was given as an adjunct treatment to the patients' regular stable antiparkinsonian medication. Dosing was individually titrated for 14 days, whereafter dosing was kept stable for an additional 14 days. Fifteen patients were randomized to treatment and 13 patients completed the 4-week treatment. Adverse events were mostly reported during the titration phase of the trial. They were mainly central nervous system related and could be mitigated by dose adjustments. There were no serious adverse events. There were no clinically significant changes in vital signs, electrocardiogram, and laboratory parameters due to the treatment. The average dose in the stable dose phase was 18 mg daily, yielding a 2-h post-dose plasma concentration of average 229 nM on day 28. Assessments for motor function showed a numeric reduction in dyskinesia. It is concluded that IRL790 can be safely administered to patients with advanced PD. The results will be of guidance for the design of phase 2 studies.
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Affiliation(s)
- Per Svenningsson
- Department of Clinical Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
- Department of Neurology, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Anders Johansson
- Department of Clinical Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
- Department of Neurology, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Dag Nyholm
- Department of Neuroscience, Neurology, Uppsala University, 751 85 Uppsala, Sweden
| | - Panagiota Tsitsi
- Department of Clinical Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Fredrik Hansson
- Clinical Trial Consultants, Dag Hammarskjöldsväg 13, 752 37 Uppsala, Sweden
| | - Clas Sonesson
- Integrative Research Laboratories AB, Arvid Wallgrens backe 20, 413 46 Göteborg, Sweden
| | - Joakim Tedroff
- Department of Clinical Neuroscience, Karolinska Institutet, 171 77 Stockholm, Sweden
- Integrative Research Laboratories AB, Arvid Wallgrens backe 20, 413 46 Göteborg, Sweden
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Pathophysiology of levodopa-induced dyskinesia: Insights from multimodal imaging and immunohistochemistry in non-human primates. Neuroimage 2018; 183:132-141. [DOI: 10.1016/j.neuroimage.2018.08.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/21/2018] [Accepted: 08/09/2018] [Indexed: 12/12/2022] Open
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Dragašević-Mišković N, Petrović I, Stanković I, Kostić VS. Chemical management of levodopa-induced dyskinesia in Parkinson's disease patients. Expert Opin Pharmacother 2018; 20:219-230. [PMID: 30411647 DOI: 10.1080/14656566.2018.1543407] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Levodopa-induced dyskinesias (LID) appears in more than 50% of Parkinson's disease patients after 5 years of treatment and clinicians always have to ensure that there is a balance between the beneficial effect of the treatment and the potential complications. AREAS COVERED In this review, the authors discuss the treatment of LID. Treatment can be divided into strategies for preventing their occurrence, modification of dopaminergic therapy, and providing more continuous dopaminergic stimulation as well as the use of nondopaminergic drugs. EXPERT OPINION Amantadine is currently considered the most effective drug for the treatment of LID. Several compounds developed to target adenosine, adrenergic, glutamatergic, and serotonergic receptors have shown to significantly decrease dyskinesias in animal models. However, despite promising preclinical results, translation to clinical practice remains challenging and majority of these compounds failed to decrease LID in randomized controlled trials with moderate-to-advanced parkinsonian patients. Despite promising results with nondopaminergic drugs, treatment of dyskinesias is still challenging and largely due to their side effects. Future research should focus on developing treatments that can provide continuous dopaminergic delivery throughout the day in a noninvasive manner. Studies on the impact of the early administration of long-acting formulations of levo-3,4-dihydroxy-phenylalanine on dyskinesias are also necessary.
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Affiliation(s)
| | - Igor Petrović
- a Neurology Clinic, CCS, School of Medicine , Universtiy of Belgrade , Belgrade , Serbia
| | - Iva Stanković
- a Neurology Clinic, CCS, School of Medicine , Universtiy of Belgrade , Belgrade , Serbia
| | - Vladimir S Kostić
- a Neurology Clinic, CCS, School of Medicine , Universtiy of Belgrade , Belgrade , Serbia
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Lanza K, Meadows SM, Chambers NE, Nuss E, Deak MM, Ferré S, Bishop C. Behavioral and cellular dopamine D 1 and D 3 receptor-mediated synergy: Implications for L-DOPA-induced dyskinesia. Neuropharmacology 2018; 138:304-314. [PMID: 29936243 DOI: 10.1016/j.neuropharm.2018.06.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/01/2018] [Accepted: 06/18/2018] [Indexed: 01/23/2023]
Abstract
Individually, D1 and D3 dopamine receptors (D1R and D3R, respectively) have been implicated in L-DOPA-induced dyskinesia (LID). Of late, direct D1R-D3R interactions have been linked to LID yet remain enigmatic. Therefore, the current research sought to characterize consequences of putative D1R-D3R interactions in dyskinesia expression and in LID-associated downstream cellular signaling. To do so, adult male Sprague-Dawley hemi-parkinsonian rats were given daily L-DOPA (6 mg/kg; s.c.) for 2 weeks to establish stable LID, as measured via the abnormal voluntary movements (AIMs) scale. Thereafter, rats underwent dose-response AIMs testing for the D1R agonist SKF38393 (0, 0.3, 1.0, 3.0 mg/kg) and the D3R agonist, PD128907 (0, 0.1, 0.3, 1.0 mg/kg). Each agonist dose-dependently induced dyskinesia, implicating individual receptor involvement. More importantly, when threshold doses were co-administered, rats displayed synergistic exacerbation of dyskinesia. Interestingly, this observation was not mirrored in general locomotor behaviors, highlighting a potentially dyskinesia-specific effect. To illuminate the mechanisms by which D1R-D3R co-stimulation led to in vivo synergy, levels of striatal phosphorylated extracellular signal-regulated kinase 1/2 (pERK1/2) were quantified after administration of SKF38393 and/or PD128907. Combined agonist treatment synergistically drove striatal pERK1/2 expression. Together, these results support the presence of a functional, synergistic interaction between D1R and D3R that manifests both behaviorally and biochemically to drive dyskinesia in hemi-parkinsonian rats.
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Affiliation(s)
- Kathryn Lanza
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
| | - Samantha M Meadows
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
| | - Nicole E Chambers
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
| | - Emily Nuss
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
| | - Molly M Deak
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
| | - Sergi Ferré
- National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Department of Health and Human Services, 251 Bayview Blvd #200, Baltimore, MD 21224, USA.
| | - Christopher Bishop
- Behavioral Neuroscience Program, Department of Psychology, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA.
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Dyskinesias and levodopa therapy: why wait? J Neural Transm (Vienna) 2018; 125:1119-1130. [PMID: 29428995 DOI: 10.1007/s00702-018-1856-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 02/05/2018] [Indexed: 12/28/2022]
Abstract
Throughout the years there has been a longstanding discussion on whether levodopa therapy in Parkinson's disease should be started in early vs. later stages, in order to prevent or delay motor complications such as fluctuations and dyskinesias. This controversial topic has been extensively debated for decades, and the prevailing view today is that levodopa should not be postponed. However, there is still fear associated with its use in early stages, especially in younger patients, who are more prone to develop dyskinesias. Even though dyskinesias are linked to levodopa use in Parkinson's disease, it has been shown that starting with a different medication (such as dopamine agonists) will not significantly delay their onset once levodopa is introduced. Since levodopa provides better symptomatic control, and other drugs may be associated with notable side effects, it is our view that there is insufficient evidence to justify levodopa-sparing strategies. The physician should try to assess each patient individually, taking into account motor and non-motor demands, as well as risk factors for potential complications, finding the optimum treatment strategy for each one. The following article provides an historical narrative perspective, as well as a literature review of those intrinsic and modifiable risk factors that have been associated with levodopa-induced dyskinesias, which should be taken into consideration when choosing the therapeutic strategy in individual Parkinson's disease patients.
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Solís O, Moratalla R. Dopamine receptors: homomeric and heteromeric complexes in l-DOPA-induced dyskinesia. J Neural Transm (Vienna) 2018; 125:1187-1194. [DOI: 10.1007/s00702-018-1852-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
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de Natale ER, Niccolini F, Wilson H, Politis M. Molecular Imaging of the Dopaminergic System in Idiopathic Parkinson's Disease. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2018; 141:131-172. [DOI: 10.1016/bs.irn.2018.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Liu ZY, Liu FT, Zuo CT, Koprich JB, Wang J. Update on Molecular Imaging in Parkinson's Disease. Neurosci Bull 2017; 34:330-340. [PMID: 29282614 DOI: 10.1007/s12264-017-0202-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 11/04/2017] [Indexed: 12/14/2022] Open
Abstract
Advances in radionuclide tracers have allowed for more accurate imaging that reflects the actions of numerous neurotransmitters, energy metabolism utilization, inflammation, and pathological protein accumulation. All of these achievements in molecular brain imaging have broadened our understanding of brain function in Parkinson's disease (PD). The implementation of molecular imaging has supported more accurate PD diagnosis as well as assessment of therapeutic outcome and disease progression. Moreover, molecular imaging is well suited for the detection of preclinical or prodromal PD cases. Despite these advances, future frontiers of research in this area will focus on using multi-modalities combining positron emission tomography and magnetic resonance imaging along with causal modeling with complex algorithms.
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Affiliation(s)
- Zhen-Yang Liu
- Department of Neurology and National Clinical Research Center for Ageing and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Feng-Tao Liu
- Department of Neurology and National Clinical Research Center for Ageing and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Chuan-Tao Zuo
- PET Center, Huashan Hospital, Fudan University, Shanghai, 200235, China
| | - James B Koprich
- Department of Neurology and National Clinical Research Center for Ageing and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China.,Krembil Institute, Toronto Western Hospital, University Health Network, Toronto, ON, M5T 2S8, Canada
| | - Jian Wang
- Department of Neurology and National Clinical Research Center for Ageing and Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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Abstract
Purpose of Review To review the current status of positron emission tomography (PET) molecular imaging research of levodopa-induced dyskinesias (LIDs) in Parkinson’s disease (PD). Recent Findings Recent PET studies have provided robust evidence that LIDs in PD are associated with elevated and fluctuating striatal dopamine synaptic levels, which is a consequence of the imbalance between dopaminergic and serotonergic terminals, with the latter playing a key role in mishandling presynaptic dopamine release. Long-term exposure to levodopa is no longer believed to solely induce LIDs, as studies have highlighted that PD patients who go on to develop LIDs exhibit elevated putaminal dopamine release before the initiation of levodopa treatment, suggesting the involvement of other mechanisms, including altered neuronal firing and abnormal levels of phosphodiesterase 10A. Summary Dopaminergic, serotonergic, glutamatergic, adenosinergic and opioid systems and phosphodiesterase 10A levels have been shown to be implicated in the development of LIDs in PD. However, no system may be considered sufficient on its own for the development of LIDs, and the mechanisms underlying LIDs in PD may have a multisystem origin. In line with this notion, future studies should use multimodal PET molecular imaging in the same individuals to shed further light on the different mechanisms underlying the development of LIDs in PD.
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Sokoloff P, Le Foll B. The dopamine D3 receptor, a quarter century later. Eur J Neurosci 2016; 45:2-19. [DOI: 10.1111/ejn.13390] [Citation(s) in RCA: 150] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/23/2016] [Accepted: 08/28/2016] [Indexed: 12/16/2022]
Affiliation(s)
| | - Bernard Le Foll
- Centre for Addiction and Mental Health; Toronto ON Canada
- University of Toronto; Toronto ON Canada
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Leggio GM, Bucolo C, Platania CBM, Salomone S, Drago F. Current drug treatments targeting dopamine D3 receptor. Pharmacol Ther 2016; 165:164-77. [DOI: 10.1016/j.pharmthera.2016.06.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/08/2016] [Indexed: 12/29/2022]
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Baek JS, Choo CC, Qian C, Tan NS, Shen Z, Loo SCJ. Multi-Drug-Loaded Microcapsules with Controlled Release for Management of Parkinson's Disease. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:3712-3722. [PMID: 27253884 DOI: 10.1002/smll.201600067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 04/05/2016] [Indexed: 06/05/2023]
Abstract
Parkinson's disease (PD) is a progressive disease of the nervous system, and is currently managed through commercial tablets that do not sufficiently enable controlled, sustained release capabilities. It is hypothesized that a drug delivery system that provides controlled and sustained release of PD drugs would afford better management of PD. Hollow microcapsules composed of poly-l-lactide (PLLA) and poly (caprolactone) (PCL) are prepared through a modified double-emulsion technique. They are loaded with three PD drugs, i.e., levodopa (LD), carbidopa (CD), and entacapone (ENT), at a ratio of 4:1:8, similar to commercial PD tablets. LD and CD are localized in both the hollow cavity and PLLA/PCL shell, while ENT is localized in the PLLA/PCL shell. Release kinetics of hydrophobic ENT is observed to be relatively slow as compared to the other hydrophilic drugs. It is further hypothesized that encapsulating ENT into PCL as a surface coating onto these microcapsules can aid in accelerating its release. Now, these spray-coated hollow microcapsules exhibit similar release kinetics, according to Higuchi's rate, for all three drugs. The results suggest that multiple drug encapsulation of LD, CD, and ENT in gastric floating microcapsules could be further developed for in vivo evaluation for the management of PD.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798
| | - Chee Chong Choo
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Cheng Qian
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
| | - Zexiang Shen
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551
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Stoessl AJ. Comment: Increased D3 binding-A substrate for levodopa-induced dyskinesias? Neurology 2016; 86:228. [PMID: 26718570 DOI: 10.1212/wnl.0000000000002297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- A Jon Stoessl
- From the Pacific Parkinson's Research Centre & National Parkinson Foundation Centre of Excellence, Division of Neurology & Djavad Mowafaghian Centre for Brain Health, University of British Columbia & Vancouver Coastal Health, Canada
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