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Bordbar S, Alijanzadeh D, Samieefar N, Khazeei Tabari MA, Pourbakhtyaran E, Rezaei N. The Role of Alpha-Synuclein in Neurodevelopmental Diseases. Mol Neurobiol 2024:10.1007/s12035-024-04305-2. [PMID: 38949729 DOI: 10.1007/s12035-024-04305-2] [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: 07/13/2023] [Accepted: 06/11/2024] [Indexed: 07/02/2024]
Abstract
Neurodevelopmental disorders are a group of diseases with cognitive, motor, and emotional development deficits. Alpha-synuclein (α-syn) is a synaptic protein involved in transmission and neurodevelopment. This protein was previously shown to be associated with several disorders, including Parkinson's disease. Furthermore, a close link between neurodevelopmental disorders and Parkinson's has also been found. Changes in synaptic function have been noticed in neurodevelopmental disorders, including autism spectrum disorder. Impaired neurogenesis and related cognitive problems have been associated with altered expression of α-syn. Various studies reported α-syn in different body fluids and tissues such as blood and serum. Alpha-synuclein can help in better understanding the pathogenesis of neurodevelopmental diseases and facilitating their early diagnosis. This review aims to go over the recent advances in the role of α-syn in the pathophysiology of neurodevelopmental disorders, including autism spectrum disorder, attention deficit hyperactivity disorder, and motor and social impairment, and its value as a diagnostic biomarker.
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Affiliation(s)
- Sanaz Bordbar
- Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, 1417755331, Iran
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Dorsa Alijanzadeh
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- USERN Office, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Noosha Samieefar
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- USERN Office, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Khazeei Tabari
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
- USERN Office, Mazandaran University of Medical Sciences, Sari, Iran
| | - Elham Pourbakhtyaran
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Pediatric Neurology, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Network of Interdisciplinarity in Neonates and Infants (NINI), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center Hospital, Tehran University of Medical Sciences, Dr. Qarib St., Keshavarz Blvd, Tehran, 14194, Iran.
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Semenova EI, Partevian SA, Shulskaya MV, Rudenok MM, Lukashevich MV, Baranova NM, Doronina OB, Doronina KS, Rosinskaya AV, Fedotova EY, Illarioshkin SN, Slominsky PA, Shadrina MI, Alieva AK. Analysis of ADORA2A, MTA1, PTGDS, PTGS2, NSF, and HNMT Gene Expression Levels in Peripheral Blood of Patients with Early Stages of Parkinson's Disease. BIOMED RESEARCH INTERNATIONAL 2023; 2023:9412776. [PMID: 38027039 PMCID: PMC10681775 DOI: 10.1155/2023/9412776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/16/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023]
Abstract
Parkinson's disease (PD) is a common chronic, age-related neurodegenerative disease. This disease is characterized by a long prodromal period. In this context, it is important to search for the genes and mechanisms that are involved in the development of the pathological process in the earliest stages of the disease. Published data suggest that blood cells, particularly lymphocytes, may be a model for studying the processes that occur in the brain in PD. Thus, in the present work, we performed an analysis of changes in the expression of the genes ADORA2A, MTA1, PTGDS, PTGS2, NSF, and HNMT in the peripheral blood of patients with early stages of PD (stages 1 and 2 of the Hoehn-Yahr scale). We found significant and PD-specific expression changes of four genes, i.e., MTA1, PTGS2, NSF, and HNMT, in the peripheral blood of patients with early stages of PD. These genes may be associated with PD pathogenesis in the early clinical stages and can be considered as potential candidate genes for this disease. Altered expression of the ADORA2A gene in treated PD patients may indicate that this gene is involved in processes affected by antiparkinsonian therapy.
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Affiliation(s)
- Ekaterina I. Semenova
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Suzanna A. Partevian
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Marina V. Shulskaya
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Margarita M. Rudenok
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Maria V. Lukashevich
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Nina M. Baranova
- Peoples' Friendship University of Russia (RUDN University), 6, Miklukho-Maklaya Str., 117198 Moscow, Russia
| | - Olga B. Doronina
- Novosibirsk State Medical University, 52, Krasnyy Ave., 630091 Novosibirsk, Russia
| | - Kseniya S. Doronina
- Novosibirsk State Medical University, 52, Krasnyy Ave., 630091 Novosibirsk, Russia
| | - Anna V. Rosinskaya
- State Public Health Institution Primorsk Regional Clinical Hospital No. 1, 57 Aleutskaya St., 690091 Vladivostok, Russia
| | | | | | - Petr A. Slominsky
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Maria I. Shadrina
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
| | - Anelya Kh. Alieva
- National Research Centre “Kurchatov Institute”, 2 Kurchatova Sq., 123182 Moscow, Russia
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Govindula A, Ranadive N, Nampoothiri M, Rao CM, Arora D, Mudgal J. Emphasizing the Crosstalk Between Inflammatory and Neural Signaling in Post-traumatic Stress Disorder (PTSD). J Neuroimmune Pharmacol 2023; 18:248-266. [PMID: 37097603 PMCID: PMC10577110 DOI: 10.1007/s11481-023-10064-z] [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: 08/10/2022] [Accepted: 04/16/2023] [Indexed: 04/26/2023]
Abstract
Post-traumatic stress disorder (PTSD) is a chronic incapacitating condition with recurrent experience of trauma-related memories, negative mood, altered cognition, and hypervigilance. Agglomeration of preclinical and clinical evidence in recent years specified that alterations in neural networks favor certain characteristics of PTSD. Besides the disruption of hypothalamus-pituitary-axis (HPA) axis, intensified immune status with elevated pro-inflammatory cytokines and arachidonic metabolites of COX-2 such as PGE2 creates a putative scenario in worsening the neurobehavioral facet of PTSD. This review aims to link the Diagnostic and Statistical Manual of mental disorders (DSM-V) symptomology to major neural mechanisms that are supposed to underpin the transition from acute stress reactions to the development of PTSD. Also, to demonstrate how these intertwined processes can be applied to probable early intervention strategies followed by a description of the evidence supporting the proposed mechanisms. Hence in this review, several neural network mechanisms were postulated concerning the HPA axis, COX-2, PGE2, NLRP3, and sirtuins to unravel possible complex neuroinflammatory mechanisms that are obscured in PTSD condition.
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Affiliation(s)
- Anusha Govindula
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Niraja Ranadive
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - C Mallikarjuna Rao
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Devinder Arora
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
- School of Pharmacy and Medical Sciences, Griffith University, Gold Coast campus, Gold Coast, Queensland, 4222, Australia.
| | - Jayesh Mudgal
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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Stafford AM, Yamamoto BK, Phillips TJ. Combined and sequential effects of alcohol and methamphetamine in animal models. Neurosci Biobehav Rev 2021; 131:248-269. [PMID: 34543650 PMCID: PMC8642292 DOI: 10.1016/j.neubiorev.2021.09.019] [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: 09/25/2020] [Revised: 09/11/2021] [Accepted: 09/12/2021] [Indexed: 11/16/2022]
Abstract
Comorbid drug use, often alcohol with other drugs, poses significant health and societal concerns. Methamphetamine is among the illicit drugs most often co-used with alcohol. The current review examines the animal literature for impacts of comorbid alcohol and methamphetamine exposure. We found evidence for additive or synergistic effects of combined or sequential exposure on behavior and physiology. Dopaminergic, serotonergic, and glutamatergic systems are all impacted by combined exposure to alcohol and methamphetamine and cyclooxygenase-2 activity plays an important role in their combined neurotoxic effects. Adverse consequences of comorbid exposure include altered brain development with prenatal exposure, impaired learning and memory, motor deficits, gastrotoxicity, hepatotoxicity, and augmented intake under some conditions. Given high susceptibility to drug experimentation in adolescence, studies of co-exposure during the adolescent period and of how adolescent exposure to one drug impacts later use or sensitivity to the other drug should be a priority. Further, to gain traction on prevention and treatment, additional research to identify motivational and neurobiological drivers and consequences of comorbid use is needed.
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Affiliation(s)
- Alexandra M Stafford
- Department of Behavioral Neuroscience, Portland Alcohol Abuse Research Center and Methamphetamine Abuse Research Center, Oregon Health & Science University, Portland, OR, USA.
| | - Bryan K Yamamoto
- Department of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Tamara J Phillips
- Department of Behavioral Neuroscience, Portland Alcohol Abuse Research Center and Methamphetamine Abuse Research Center, Oregon Health & Science University, Portland, OR, USA; Veterans Affairs Portland Health Care System, Portland, OR, USA
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El-Ansary A, Alhakbany M, Aldbass A, Qasem H, Al-Mazidi S, Bhat RS, Al-Ayadhi L. Alpha-Synuclein, cyclooxygenase-2 and prostaglandins-EP2 receptors as neuroinflammatory biomarkers of autism spectrum disorders: Use of combined ROC curves to increase their diagnostic values. Lipids Health Dis 2021; 20:155. [PMID: 34742290 PMCID: PMC8571879 DOI: 10.1186/s12944-021-01578-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impairments in social interaction and restricted and repetitive behaviors. Neuroinflammation and abnormal lipid mediators have been identified in multiple investigations as an acknowledged etiological mechanism of ASD that can be targeted for therapeutic intervention. METHODS In this study, multiple regression and combined receiver operating characteristic (ROC) curve analyses were used to determine the relationship between the neuroinflammatory marker α-synuclein and lipid mediator markers related to inflammation induction, such as cyclooxygenase-2 and prostaglandin-EP2 receptors, in the etiology of ASD. Additionally, the study aimed to determine the linear combination that maximizes the partial area under ROC curves for a set of markers. Forty children with ASD and 40 age- and sex-matched controls were enrolled in the study. Using ELISA, the levels of α-synuclein, cyclo-oxygenase-2, and prostaglandin-EP2 receptors were measured in the plasma of both groups. Statistical analyses using ROC curves and multiple and logistic regression models were performed. RESULTS A remarkable increase in the area under the curve was observed using combined ROC curve analyses. Moreover, higher specificity and sensitivity of the combined markers were reported. CONCLUSIONS The present study indicates that measurement of the predictive value of selected biomarkers related to neuroinflammation and lipid metabolism in children with ASD using a ROC curve analysis should lead to a better understanding of the etiological mechanism of ASD and its link with metabolism. This information may facilitate early diagnosis and intervention.
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Affiliation(s)
- Afaf El-Ansary
- Central Laboratory, Female Center for Medical Studies and Scientific Section, King Saud University, P. O Box 22452, Riyadh, KSA, 11495, Saudi Arabia.
- Autism Research and Treatment Center, Riyadh, Saudi Arabia.
| | - Manan Alhakbany
- Department of Physiology, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Abeer Aldbass
- Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Hanan Qasem
- Department of Physiology, College of Medicine, Al-Imam Mohammed Bin Saud Islamic University, Riyadh, Saudi Arabia
| | - Sarah Al-Mazidi
- Department of Physiology, College of Medicine, Al-Imam Mohammed Bin Saud Islamic University, Riyadh, Saudi Arabia
| | - Ramesa Shafi Bhat
- Department of Physiology, College of Medicine, Al-Imam Mohammed Bin Saud Islamic University, Riyadh, Saudi Arabia
| | - Laila Al-Ayadhi
- Autism Research and Treatment Center, Riyadh, Saudi Arabia
- Department of Physiology, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
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Sadeghnia H, Shahba S, Ebrahimzadeh-Bideskan A, Mohammadi S, Malvandi AM, Mohammadipour A. Atrazine neural and reproductive toxicity. TOXIN REV 2021. [DOI: 10.1080/15569543.2021.1966637] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hamidreza Sadeghnia
- Department of Pharmacology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurocognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sara Shahba
- Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Shabnam Mohammadi
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Abbas Mohammadipour
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Parecoxib alleviates the motor behavioral decline of aged rats by ameliorating mitochondrial dysfunction in the substantia nigra via COX-2/PGE2 pathway inhibition. Neuropharmacology 2021; 194:108627. [PMID: 34089729 DOI: 10.1016/j.neuropharm.2021.108627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/15/2021] [Accepted: 05/19/2021] [Indexed: 12/17/2022]
Abstract
Mitochondrial dysfunction manifests as an early event in the substantia nigra (SN) in aging and Parkinson disease. Cyclooxygenase 2 (COX-2), the rate-limiting enzyme in the prostaglandin E2 (PGE2) synthesis pathway, is implicated in aging and age-related neurodegenerative diseases; moreover, inhibition of COX-2 expression has been shown to be neuroprotective for nigrostriatal dopaminergic neurons. However, it is not known whether the neuroprotective effect of COX-2 inhibition is related to improved mitochondrial function during the aging process. To this end, we explored the effects of the selective COX-2 inhibitor parecoxib on mitochondrial function in the SN of aged rats. We found that parecoxib administration to aged rats for 10 weeks decreased COX-2/PGE2 expression, increased tyrosine hydroxylase and dopamine transporter expression in nigrostriatal dopaminergic neurons, and alleviated motor behavioral decline. Decreased malondialdehyde levels and an increased GSH/GSSG ratio as well as enhanced enzymatic activities of catalase and manganese superoxide dismutase in parecoxib-treated aged rats indicate that parecoxib administration elevated antioxidative ability in the SN during the aging process. Parecoxib treatment to aged rats promoted mitochondrial biogenesis by upregulating PGC-1α/NRF-1/TFAM, enhancing mitochondrial fusion by decreasing Drp1 levels and increasing Mfn1 and OPA1 levels, and activated mitophagy by increasing PINK1/Parkin levels while reducing p62/SQSTM1 levels, thereby coordinating mitochondrial homeostasis via inhibiting the COX-2/PGE2 pathway. Thus, our results strongly support the conclusion that parecoxib treatment is conducive to improving mitochondrial dysfunction in the SN upon aging in rats.
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Pinçon A, De Montgolfier O, Akkoyunlu N, Daneault C, Pouliot P, Villeneuve L, Lesage F, Levy BI, Thorin-Trescases N, Thorin É, Ruiz M. Non-Alcoholic Fatty Liver Disease, and the Underlying Altered Fatty Acid Metabolism, Reveals Brain Hypoperfusion and Contributes to the Cognitive Decline in APP/PS1 Mice. Metabolites 2019; 9:metabo9050104. [PMID: 31130652 PMCID: PMC6572466 DOI: 10.3390/metabo9050104] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/16/2019] [Accepted: 05/21/2019] [Indexed: 12/22/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD), the leading cause of chronic liver disease, is associated with cognitive decline in middle-aged adults, but the mechanisms underlying this association are not clear. We hypothesized that NAFLD would unveil the appearance of brain hypoperfusion in association with altered plasma and brain lipid metabolism. To test our hypothesis, amyloid precursor protein/presenilin-1 (APP/PS1) transgenic mice were fed a standard diet or a high-fat, cholesterol and cholate diet, inducing NAFLD without obesity and hyperglycemia. The diet-induced NAFLD disturbed monounsaturated and polyunsaturated fatty acid (MUFAs, PUFAs) metabolism in the plasma, liver, and brain, and particularly reduced n-3 PUFAs levels. These alterations in lipid homeostasis were associated in the brain with an increased expression of Tnfα, Cox2, p21, and Nox2, reminiscent of brain inflammation, senescence, and oxidative stress. In addition, compared to wild-type (WT) mice, while brain perfusion was similar in APP/PS1 mice fed with a chow diet, NAFLD in APP/PS1 mice reveals cerebral hypoperfusion and furthered cognitive decline. NAFLD reduced plasma β40- and β42-amyloid levels and altered hepatic but not brain expression of genes involved in β-amyloid peptide production and clearance. Altogether, our results suggest that in a mouse model of Alzheimer disease (AD) diet-induced NAFLD contributes to the development and progression of brain abnormalities through unbalanced brain MUFAs and PUFAs metabolism and cerebral hypoperfusion, irrespective of brain amyloid pathology that may ultimately contribute to the pathogenesis of AD.
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Affiliation(s)
- Anthony Pinçon
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada.
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
| | - Olivia De Montgolfier
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada.
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
| | - Nilay Akkoyunlu
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
| | - Caroline Daneault
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
| | - Philippe Pouliot
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
- Department of Electrical Engineering, Ecole Polytechnique de Montréal, Montreal, QC H3T 1J4, Canada.
| | - Louis Villeneuve
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
| | - Frédéric Lesage
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
- Department of Electrical Engineering, Ecole Polytechnique de Montréal, Montreal, QC H3T 1J4, Canada.
| | - Bernard I Levy
- Institut des Vaisseaux et du Sang, Hôpital Lariboisière, 75010 Paris, France.
| | | | - Éric Thorin
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
- Department of Surgery, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada.
| | - Matthieu Ruiz
- Research Center, Montreal Heart Institute, University of Montreal, Montreal, QC H1T 1C8, Canada.
- Department of Medecine, Faculty of Medicine, Université de Montréal, Montreal, QC H3T 1J4, Canada.
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Tien LT, Kaizaki A, Pang Y, Cai Z, Bhatt AJ, Fan LW. Neonatal exposure to lipopolysaccharide enhances accumulation of α-synuclein aggregation and dopamine transporter protein expression in the substantia nigra in responses to rotenone challenge in later life. Toxicology 2013; 308:96-103. [PMID: 23567316 DOI: 10.1016/j.tox.2013.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 03/13/2013] [Accepted: 03/25/2013] [Indexed: 11/18/2022]
Abstract
Brain inflammation in early life may enhance adult susceptibility to develop neurodegenerative disorders triggered by environmental toxins. Our previous studies show that perinatal lipopolysaccharide (LPS) exposure enhances adult susceptibility to rotenone-induced injury to the dopaminergic system in the substantia nigra (SN) of the adult rat brain. To further investigate the enhanced adult susceptibility by neonatal LPS exposure to rotenone neurotoxicity, we used our neonatal rat model of LPS exposure (1mg/kg, intracerebral injection in postnatal day 5, P5, neonatal rats) to examine the protein levels of α-synuclein and dopamine transporters (DAT) in the adult rat. By P70, rats from the saline- or LPS-exposed group were challenged with rotenone, a commonly used pesticide, through subcutaneous mini-pump infusion at a dose of 1.25mg/kg/day for 14 days. The accumulation of α-synuclein aggregation and increment of DAT protein content were found in the SN of LPS-exposed rats. Neonatal LPS exposure enhanced rotenone-stimulated accumulation of α-synuclein aggregation and increment in DAT protein expression in the cytoplasmic compartment of the SN, and in the synaptosomal compartment of the striatum of adult rats. Rotenone treatment also resulted in reduction of [(3)H]dopamine uptake and mitochondrial complex I activity in the striatum of rats with neonatal LPS exposure, but not in those without this exposure. The current study suggests possible roles of α-synuclein aggregate and DAT distribution in the cytoplasm and synaptosome triggered by environmental toxins in later life in the development of neurodegenerative disorders. Our model may be useful in studying mechanisms involved in the pathogenesis of nonfamilial Parkinson's disease and for developing potential therapeutic treatments for this disease.
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Affiliation(s)
- Lu-Tai Tien
- School of Medicine, Fu Jen Catholic University, Xinzhuang Dist, New Taipei City 24205, Taiwan
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Kaizaki A, Tien LT, Pang Y, Cai Z, Tanaka S, Numazawa S, Bhatt AJ, Fan LW. Celecoxib reduces brain dopaminergic neuronaldysfunction, and improves sensorimotor behavioral performance in neonatal rats exposed to systemic lipopolysaccharide. J Neuroinflammation 2013; 10:45. [PMID: 23561827 PMCID: PMC3637465 DOI: 10.1186/1742-2094-10-45] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Accepted: 03/21/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) is induced in inflammatory cells in response to cytokines and pro-inflammatory molecules, suggesting that COX-2 has a role in the inflammatory process. The objective of the current study was to examine whether celecoxib, a selective COX-2 inhibitor, could ameliorate lipopolysaccharide (LPS)-induced brain inflammation, dopaminergic neuronal dysfunction and sensorimotor behavioral impairments. METHODS Intraperitoneal (i.p.) injection of LPS (2 mg/kg) was performed in rat pups on postnatal Day 5 (P5), and celecoxib (20 mg/kg) or vehicle was administered (i.p.) five minutes after LPS injection. Sensorimotor behavioral tests were carried out 24 h after LPS exposure, and brain injury was examined on P6. RESULTS Our results showed that LPS exposure resulted in impairment in sensorimotor behavioral performance and injury to brain dopaminergic neurons, as indicated by loss of tyrosine hydroxylase (TH) immunoreactivity, as well as decreases in mitochondria activity in the rat brain. LPS exposure also led to increases in the expression of α-synuclein and dopamine transporter proteins and enhanced [3H]dopamine uptake. Treatment with celecoxib significantly reduced LPS-induced sensorimotor behavioral disturbances and dopaminergic neuronal dysfunction. Celecoxib administration significantly attenuated LPS-induced increases in the numbers of activated microglia and astrocytes and in the concentration of IL-1β in the neonatal rat brain. The protective effect of celecoxib was also associated with an attenuation of LPS-induced COX-2+ cells, which were double labeled with TH + (dopaminergic neuron) or glial fibrillary acidic protein (GFAP) + (astrocyte) cells. CONCLUSION Systemic LPS administration induced brain inflammatory responses in neonatal rats; these inflammatory responses included induction of COX-2 expression in TH neurons and astrocytes. Application of the COX-2 inhibitor celecoxib after LPS treatment attenuated the inflammatory response and improved LPS-induced impairment, both biochemically and behaviorally.
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Affiliation(s)
- Asuka Kaizaki
- Division of Newborn Medicine, Department of Pediatrics, University of Mississippi Medical Center, Jackson, MS 39216, USA
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Potential of D-cycloserine in the treatment of behavioral and neuroinflammatory disorders in Parkinson's disease and studies that need to be performed before clinical trials. Kaohsiung J Med Sci 2012; 28:407-17. [DOI: 10.1016/j.kjms.2012.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 10/03/2011] [Indexed: 01/20/2023] Open
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Khansari PS, Coyne L. NSAIDs in the treatment and/or prevention of neurological disorders. Inflammopharmacology 2012; 20:159-67. [DOI: 10.1007/s10787-011-0116-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 12/21/2011] [Indexed: 12/26/2022]
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13
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Bartels AL, Leenders KL. Cyclooxygenase and neuroinflammation in Parkinson's disease neurodegeneration. Curr Neuropharmacol 2011; 8:62-8. [PMID: 20808546 PMCID: PMC2866462 DOI: 10.2174/157015910790909485] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 09/21/2009] [Accepted: 11/02/2009] [Indexed: 01/07/2023] Open
Abstract
Cyclooxygenase (COX) expression in the brain is associated with pro-inflammatory activities, which are instrumental in neurodegenerative processes such as Parkinson’s disease (PD). It is discussed that drugs with the capacity to rescue dopaminergic neurons from microglia toxicity and neuroinflammatory processes may result in an amelioration of parkinsonian symptoms by delaying the onset or slowing progression. This article reviews the involvement of COX in neuroinflammation, specifically focussing at the role of selective COX-2 inhibition in neuroinflammation and neurodegeneration in Parkinson’s disease.
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Affiliation(s)
- Anna L Bartels
- Dept. of Neurology, University Medical Centre Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands.
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Anderson DG, Mariappan SVS, Buettner GR, Doorn JA. Oxidation of 3,4-dihydroxyphenylacetaldehyde, a toxic dopaminergic metabolite, to a semiquinone radical and an ortho-quinone. J Biol Chem 2011; 286:26978-86. [PMID: 21642436 DOI: 10.1074/jbc.m111.249532] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The oxidation and toxicity of dopamine is believed to contribute to the selective neurodegeneration associated with Parkinson disease. The formation of reactive radicals and quinones greatly contributes to dopaminergic toxicity through a variety of mechanisms. The physiological metabolism of dopamine to 3,4-dihydroxyphenylacetaldehyde (DOPAL) via monoamine oxidase significantly increases its toxicity. To more adequately explain this enhanced toxicity, we hypothesized that DOPAL is capable of forming radical and quinone species upon oxidation. Here, two unique oxidation products of DOPAL are identified. Several different oxidation methods gave rise to a transient DOPAL semiquinone radical, which was characterized by electron paramagnetic resonance spectroscopy. NMR identified the second oxidation product of DOPAL as the ortho-quinone. Also, carbonyl hydration of DOPAL in aqueous media was evident via NMR. Interestingly, the DOPAL quinone exists exclusively in the hydrated form. Furthermore, the enzymatic and chemical oxidation of DOPAL greatly enhance protein cross-linking, whereas auto-oxidation results in the production of superoxide. Also, DOPAL was shown to be susceptible to oxidation by cyclooxygenase-2 (COX-2). The involvement of this physiologically relevant enzyme in both oxidative stress and Parkinson disease underscores the potential importance of DOPAL in the pathogenesis of this condition.
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Affiliation(s)
- David G Anderson
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City, Iowa 52242-1112, USA
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15
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Rojanathammanee L, Murphy EJ, Combs CK. Expression of mutant alpha-synuclein modulates microglial phenotype in vitro. J Neuroinflammation 2011; 8:44. [PMID: 21554732 PMCID: PMC3104357 DOI: 10.1186/1742-2094-8-44] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 05/09/2011] [Indexed: 12/25/2022] Open
Abstract
Background Increased reactive microglia are a histological characteristic of Parkinson's disease (PD) brains, positively correlating with levels of deposited α-synuclein protein. This suggests that microglial-mediated inflammatory events may contribute to disease pathophysiology. Mutations in the gene coding for α-synuclein lead to a familial form of PD. Based upon our prior findings that α-synuclein expression regulates microglial phenotype we hypothesized that expression of mutant forms of the protein may contribute to the reactive microgliosis characteristic of PD brains. Methods To quantify the effects of wild type and mutant α-synuclein over-expression on microglial phenotype a murine microglial cell line, BV2, was transiently transfected to express human wild type (WT), and mutant α-synuclein (A30P and A53T) proteins. Transfected cells were used to assess changes in microglia phenotype via Western blot analysis, ELISA, phagocytosis, and neurotoxicity assays. Results As expected, over-expression of α-synuclein induced a reactive phenotype in the transfected cells. Expression of α-synuclein increased protein levels of cycloxygenase-2 (Cox-2). Transfected cells demonstrated increased secretion of the proinflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), as well as increased nitric oxide production. Transfected cells also had impaired phagocytic ability correlating with decreased protein levels of lysosomal-associated membrane protein 1 (LAMP-1). In spite of the increased cytokine secretion profile, the transfected cells did not exhibit increased neurotoxic ability above control non-transfected BV2 cells in neuron-microglia co-cultures. Conclusions These data demonstrated that over-expression of α-synuclein drives microglial cells into a form of reactive phenotype characterized by elevated levels of arachidonic acid metabolizing enzymes, cytokine secretion, and reactive nitrogen species secretion all superimposed upon impaired phagocytic potential.
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Affiliation(s)
- Lalida Rojanathammanee
- Department of Pharmacology, Physiology, & Therapeutics, University of North Dakota School of Medicine and Health Sciences, 504 Hamline Street, Neuroscience Building, Grand Forks, ND 58203, USA
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Ramkissoon A, Wells PG. Human prostaglandin H synthase (hPHS)-1- and hPHS-2-dependent bioactivation, oxidative macromolecular damage, and cytotoxicity of dopamine, its precursor, and its metabolites. Free Radic Biol Med 2011; 50:295-304. [PMID: 21078384 DOI: 10.1016/j.freeradbiomed.2010.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 09/22/2010] [Accepted: 11/08/2010] [Indexed: 01/14/2023]
Abstract
The dopamine (DA) precursor l-dihydroxyphenylalanine (L-DOPA) and metabolites dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA), and 3-methoxytyramine may serve as substrates for prostaglandin H synthase (PHS)-catalyzed bioactivation to free radical intermediates. We used CHO-K1 cells expressing human (h) PHS-1 or hPHS-2 to investigate hPHS isozyme-dependent oxidative damage and cytotoxicity. hPHS-1- and hPHS-2-expressing cells incubated with DA, L-DOPA, DOPAC, or HVA exhibited increased cytotoxicity compared to untransfected cells, and cytotoxicity was increased further by exogenous arachidonic acid (AA), which increased hPHS activity. Preincubation with catalase, which detoxifies reactive oxygen species, or acetylsalicylic acid, an inhibitor of hPHS-1 and -2, reduced the cytotoxicity caused by DA, L-DOPA, DOPAC, and HVA in hPHS-1 and -2 cells both with and without AA. Protein oxidation was increased in hPHS-1 and -2 cells exposed to DA or L-DOPA and further increased by AA addition. DNA oxidation was enhanced earlier and at lower substrate concentrations than protein oxidation in both hPHS-1 and -2 cells by DA, L-DOPA, DOPAC, and HVA and further enhanced by AA addition. hPHS-2 cells seemed more susceptible than hPHS-1 cells, whereas untransfected CHO-K1 cells were less susceptible. Thus, isozyme-specific, hPHS-dependent oxidative damage and cytotoxicity caused by neurotransmitters, their precursors, and their metabolites may contribute to neurodegeneration associated with aging.
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Affiliation(s)
- Annmarie Ramkissoon
- Division of Biomolecular Sciences, Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
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Paraquat induces cyclooxygenase-2 (COX-2) implicated toxicity in human neuroblastoma SH-SY5Y cells. Toxicol Lett 2010; 199:239-46. [PMID: 20851755 DOI: 10.1016/j.toxlet.2010.09.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/15/2010] [Accepted: 09/08/2010] [Indexed: 01/06/2023]
Abstract
Paraquat produces dopaminergic pathologies of Parkinson's disease, in which cyclooxygenase-2 (COX-2) is implicated. However, it is unclear whether paraquat induces toxicity within dopaminergic neurons through COX-2. To address this, human neuroblastoma SH-SY5Y cells were treated with paraquat and then the involving mechanism of COX-2 was investigated. We initially examined the involvement of COX-2 in paraquat-induced toxicity. Data suggest that COX-2 is implicated in paraquat-induced reduction of viability in SY5Y cells. Then, to confirm the presence of COX-2 in SY5Y cells, we examined COX-2 mRNA and protein levels, which are regulated by NF-κB. Data indicate that paraquat activates NF-κB and up-regulates COX-2. We then checked quinone-bound proteins as quinones produced by COX-2 bind to intracellular proteins. Paraquat obviously forms quinone-bound proteins, in particular, quinone-bound DJ-1 and this formation is attenuated by meloxicam. Finally, we investigated antioxidant system including nuclear factor erythroid-related factor 2 (Nrf2), gamma glutamylcysteine synthetase (γGCS), and glutathione (GSH) as DJ-1 is linked to Nrf2 and Nrf2 regulates γGCS expression and γGCS is a GSH synthesis enzyme. Paraquat decreases protein levels of Nrf2 and γGCS and intracellular GSH level and these decreases are alleviated by meloxicam. Therefore, collectively, our data indicate that paraquat induces COX-2 implicated toxicity in SY5Y cells. In conclusion, current findings support the idea that paraquat might produce toxicity in dopaminergic neurons through COX-2.
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Lee JK, Tran T, Tansey MG. Neuroinflammation in Parkinson's disease. J Neuroimmune Pharmacol 2009; 4:419-29. [PMID: 19821032 PMCID: PMC3736976 DOI: 10.1007/s11481-009-9176-0] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Accepted: 09/22/2009] [Indexed: 01/01/2023]
Abstract
During the last two decades, a wealth of animal and human studies has implicated inflammation-derived oxidative stress and cytokine-dependent neurotoxicity in the progressive degeneration of the dopaminergic nigrostriatal pathway, the hallmark of Parkinson's disease (PD). In this review, we discuss the various hypotheses regarding the role of microglia and other immune cells in PD pathogenesis and progression, the inflammatory mechanisms implicated in disease progression from pre-clinical and clinical studies, the recent evidence that systemic inflammation can trigger microglia activation in PD-relevant central nervous system regions, the synergism between gene products linked to parkinsonian phenotypes (alpha-synuclein, parkin, Nurr1, and regulator of G-protein signaling-10) and neuroinflammation in promoting neurodegeneration of the nigrostriatal pathway, and the latest update on meta-analysis of epidemiological studies on the risk-lowering effects of anti-inflammatory drug regimens.
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Affiliation(s)
- Jae-Kyung Lee
- Department of Physiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
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Sui Y, Stanić D, Tomas D, Jarrott B, Horne MK. Meloxicam reduces lipopolysaccharide-induced degeneration of dopaminergic neurons in the rat substantia nigra pars compacta. Neurosci Lett 2009; 460:121-5. [PMID: 19450656 DOI: 10.1016/j.neulet.2009.05.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 05/01/2009] [Accepted: 05/12/2009] [Indexed: 12/13/2022]
Abstract
Inflammation is believed to play an important role in the etiology and pathogenesis of Parkinson's disease (PD). However, experimental and epidemiological evidences from various non-steroidal anti-inflammatory drugs, including cyclooxygenase-2 (COX-2) inhibitors, seem contradictive. Using the intranigral lipopolysaccharide (LPS) rat model, we show that meloxicam, a preferential COX-2 inhibitor, diminishes the activation of OX-42-immunoreactive (ir) microglia and reduces the loss of tyrosine hydroxylase (TH)-ir dopamine (DA) neurons in the substantia nigra pars compacta (SNpc) that is normally induced by exposure to LPS. Double-labelling immunohistochemistry identified that activated microglia rather than intact resting microglia are the main intracellular venues for COX-2 expression. These findings suggest that inhibition of COX-2 activity in activated microglial cells may be potentially neuroprotective for DA neurons in the SNpc.
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Affiliation(s)
- Yi Sui
- Florey Neuroscience Institutes, The University of Melbourne, Parkville, Victoria 3010, Australia
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Swarbrick ME, Beswick PJ, Gleave RJ, Green RH, Bingham S, Bountra C, Carter MC, Chambers LJ, Chessell IP, Clayton NM, Collins SD, Corfield JA, Hartley CD, Kleanthous S, Lambeth PF, Lucas FS, Mathews N, Naylor A, Page LW, Payne JJ, Pegg NA, Price HS, Skidmore J, Stevens AJ, Stocker R, Stratton SC, Stuart AJ, Wiseman JO. Identification of [4-[4-(methylsulfonyl)phenyl]-6-(trifluoromethyl)-2-pyrimidinyl] amines and ethers as potent and selective cyclooxygenase-2 inhibitors. Bioorg Med Chem Lett 2009; 19:4504-8. [PMID: 19520573 DOI: 10.1016/j.bmcl.2009.02.085] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 02/20/2009] [Accepted: 02/22/2009] [Indexed: 10/21/2022]
Abstract
A novel series of [4-[4-(methylsulfonyl)phenyl]-6-(trifluoromethyl)-2-pyrimidine-based cyclooxygenase-2 (COX-2) inhibitors, which have a different arrangement of substituents compared to the more common 1,2-diarylheterocycle based molecules, have been discovered. For example, 2-(butyloxy)-4-[4-(methylsulfonyl)phenyl]-6-(trifluoromethyl)pyrimidine (47), a member of the 2-pyrimidinyl ether series, has been shown to be a potent and selective inhibitor with a favourable pharmacokinetic profile, high brain penetration and good efficacy in rat models of hypersensitivity.
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Affiliation(s)
- Martin E Swarbrick
- Pain and Neuroexcitability Discovery Performance Unit, Neurosciences Centre of Excellence for Drug Discovery, GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK
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Barcia C, Ros F, Carrillo MA, Aguado-Llera D, Ros CM, Gómez A, Nombela C, de Pablos V, Fernández-Villalba E, Herrero MT. Inflammatory response in Parkinsonism. JOURNAL OF NEURAL TRANSMISSION. SUPPLEMENTUM 2009:245-52. [PMID: 20411782 DOI: 10.1007/978-3-211-92660-4_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Inflammatory responses have been proposed as important factors in dopaminergic neuro-degeneration in Parkinsonism. Increasing evidence suggests that the alteration of the glial microenvironment induced by neuronal degeneration could be deleterious to the remaining neurons. The activation of microglia/macrophages and reactive astrocytes may have a negative effect on the surrounding parenchyma, perpetuating the neurodegenerative process. However, this alteration may also go beyond the brain parenchyma and stimulate other inflammatory changes in other systems, inducing the release of proinflammatory cytokines and probably Acute Phase Proteins (APP) and Glucocorticoids (GC). In this work we review the latest advances in the field to provide a picture of the state of the art of studies of inflammatory responses and Parkinsonism, hopefully opening up new therapeutic perspectives for patients with Parkinson's disease.
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Affiliation(s)
- Carlos Barcia
- Clinical and Experimental Neuroscience, Department of Human Anatomy, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, School of Medicine, University of Murcia, Campus de Espinardo, Murcia 30100, Spain.
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Rochet JC, Liu F. Inhibition of α-Synuclein Aggregation by Antioxidants and Chaperones in Parkinson’s Disease. PROTEIN FOLDING AND MISFOLDING: NEURODEGENERATIVE DISEASES 2008. [DOI: 10.1007/978-1-4020-9434-7_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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