Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease

Parkinson’s disease is a neurodegenerative disorder, the motor symptoms of which are associated classically with Lewy body formation and nigrostriatal degeneration. Neuroinflammation has been implicated in the progression of this disease, by which microglia become chronically activated in...

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Main Authors: Rachel Kelly, Valerie Joers, Malú G. Tansey, Declan P. McKernan, Eilís Dowd
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/25/3/453
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author Rachel Kelly
Valerie Joers
Malú G. Tansey
Declan P. McKernan
Eilís Dowd
author_facet Rachel Kelly
Valerie Joers
Malú G. Tansey
Declan P. McKernan
Eilís Dowd
author_sort Rachel Kelly
collection DOAJ
description Parkinson&#8217;s disease is a neurodegenerative disorder, the motor symptoms of which are associated classically with Lewy body formation and nigrostriatal degeneration. Neuroinflammation has been implicated in the progression of this disease, by which microglia become chronically activated in response to &#945;-synuclein pathology and dying neurons, thereby acquiring dishomeostatic phenotypes that are cytotoxic and can cause further neuronal death. Microglia have a functional endocannabinoid signaling system, expressing the cannabinoid receptors in addition to being capable of synthesizing and degrading endocannabinoids. Alterations in the cannabinoid system&#8212;particularly an upregulation in the immunomodulatory CB<sub>2</sub> receptor&#8212;have been demonstrated to be related to the microglial activation state and hence the microglial phenotype. This paper will review studies that examine the relationship between the cannabinoid system and microglial activation, and how this association could be manipulated for therapeutic benefit in Parkinson&#8217;s disease.
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spelling doaj.art-f7fa885fa0cf49cebaf62ffd8cdb75312022-12-22T00:02:44ZengMDPI AGMolecules1420-30492020-01-0125345310.3390/molecules25030453molecules25030453Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s DiseaseRachel Kelly0Valerie Joers1Malú G. Tansey2Declan P. McKernan3Eilís Dowd4Pharmacology &amp; Therapeutics, National University of Ireland, H91 W5P7 Galway, IrelandDepartment of Neuroscience, University of Florida College of Medicine, Gainesville, FL 32611, USADepartment of Neuroscience, University of Florida College of Medicine, Gainesville, FL 32611, USAPharmacology &amp; Therapeutics, National University of Ireland, H91 W5P7 Galway, IrelandPharmacology &amp; Therapeutics, National University of Ireland, H91 W5P7 Galway, IrelandParkinson&#8217;s disease is a neurodegenerative disorder, the motor symptoms of which are associated classically with Lewy body formation and nigrostriatal degeneration. Neuroinflammation has been implicated in the progression of this disease, by which microglia become chronically activated in response to &#945;-synuclein pathology and dying neurons, thereby acquiring dishomeostatic phenotypes that are cytotoxic and can cause further neuronal death. Microglia have a functional endocannabinoid signaling system, expressing the cannabinoid receptors in addition to being capable of synthesizing and degrading endocannabinoids. Alterations in the cannabinoid system&#8212;particularly an upregulation in the immunomodulatory CB<sub>2</sub> receptor&#8212;have been demonstrated to be related to the microglial activation state and hence the microglial phenotype. This paper will review studies that examine the relationship between the cannabinoid system and microglial activation, and how this association could be manipulated for therapeutic benefit in Parkinson&#8217;s disease.https://www.mdpi.com/1420-3049/25/3/453neuroinflammationmicrogliaphenotypescannabinoidsneurodegenerationparkinson’s
spellingShingle Rachel Kelly
Valerie Joers
Malú G. Tansey
Declan P. McKernan
Eilís Dowd
Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
Molecules
neuroinflammation
microglia
phenotypes
cannabinoids
neurodegeneration
parkinson’s
title Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
title_full Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
title_fullStr Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
title_full_unstemmed Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
title_short Microglial Phenotypes and Their Relationship to the Cannabinoid System: Therapeutic Implications for Parkinson’s Disease
title_sort microglial phenotypes and their relationship to the cannabinoid system therapeutic implications for parkinson s disease
topic neuroinflammation
microglia
phenotypes
cannabinoids
neurodegeneration
parkinson’s
url https://www.mdpi.com/1420-3049/25/3/453
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AT malugtansey microglialphenotypesandtheirrelationshiptothecannabinoidsystemtherapeuticimplicationsforparkinsonsdisease
AT declanpmckernan microglialphenotypesandtheirrelationshiptothecannabinoidsystemtherapeuticimplicationsforparkinsonsdisease
AT eilisdowd microglialphenotypesandtheirrelationshiptothecannabinoidsystemtherapeuticimplicationsforparkinsonsdisease