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Negi S, Khurana N, Duggal N. The misfolding mystery: α-synuclein and the pathogenesis of Parkinson's disease. Neurochem Int 2024; 177:105760. [PMID: 38723900 DOI: 10.1016/j.neuint.2024.105760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 05/12/2024]
Abstract
Neurodegenerative diseases such as Parkinson's disease (PD) are characterized by the death of neurons in specific areas of the brain. One of the proteins that is involved in the pathogenesis of PD is α-synuclein (α-syn). α-Syn is a normal protein that is found in all neurons, but in PD, it misfolds and aggregates into toxic fibrils. These fibrils can then coalesce into pathological inclusions, such as Lewy bodies and Lewy neurites. The pathogenic pathway of PD is thought to involve a number of steps, including misfolding and aggregation of α-syn, mitochondrial dysfunction, protein clearance impairment, neuroinflammation and oxidative stress. A deeper insight into the structure of α-syn and its fibrils could aid in understanding the disease's etiology. The prion-like nature of α-syn is also an important area of research. Prions are misfolded proteins that can spread from cell to cell, causing other proteins to misfold as well. It is possible that α-syn may behave in a similar way, spreading from cell to cell and causing a cascade of misfolding and aggregation. Various post-translational alterations have also been observed to play a role in the pathogenesis of PD. These alterations can involve a variety of nuclear and extranuclear activities, and they can lead to the misfolding and aggregation of α-syn. A better understanding of the pathogenic pathway of PD could lead to the development of new therapies for the treatment of this disease.
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Affiliation(s)
- Samir Negi
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi, G.T. Road, Phagwara, Punjab, 144411, India
| | - Navneet Khurana
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi, G.T. Road, Phagwara, Punjab, 144411, India
| | - Navneet Duggal
- School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi, G.T. Road, Phagwara, Punjab, 144411, India.
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2
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Kalinichenko LS, Kohl Z, Mühle C, Hassan Z, Hahn A, Schmitt EM, Macht K, Stoyanov L, Moghaddami S, Bilbao R, Eulenburg V, Winkler J, Kornhuber J, Müller CP. Sex-specific pleiotropic changes in emotional behavior and alcohol consumption in human α-synuclein A53T transgenic mice during early adulthood. J Neurochem 2024; 168:269-287. [PMID: 38284431 DOI: 10.1111/jnc.16051] [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: 07/18/2023] [Revised: 12/15/2023] [Accepted: 01/07/2024] [Indexed: 01/30/2024]
Abstract
Point mutations in the α-synuclein coding gene may lead to the development of Parkinson's disease (PD). PD is often accompanied by other psychiatric conditions, such as anxiety, depression, and drug use disorders, which typically emerge in adulthood. Some of these point mutations, such as SNCA and A30T, have been linked to behavioral effects that are not commonly associated with PD, especially regarding alcohol consumption patterns. In this study, we investigated whether the familial PD point mutation A53T is associated with changes in alcohol consumption behavior and emotional states at ages not yet characterized by α-synuclein accumulation. The affective and alcohol-drinking phenotypes remained unaltered in female PDGF-hA53T-synuclein-transgenic (A53T) mice during both early and late adulthood. Brain region-specific activation of ceramide-producing enzymes, acid sphingomyelinase (ASM), and neutral sphingomyelinase (NSM), known for their neuroprotective properties, was observed during early adulthood but not in late adulthood. In males, the A53T mutation was linked to a reduction in alcohol consumption in both early and late adulthood. However, male A53T mice displayed increased anxiety- and depression-like behaviors during both early and late adulthood. Enhanced ASM activity in the dorsal mesencephalon and ventral hippocampus may potentially contribute to these adverse behavioral effects of the mutation in males during late adulthood. In summary, the A53T gene mutation was associated with diverse changes in emotional states and alcohol consumption behavior long before the onset of PD, and these effects varied by sex. These alterations in behavior may be linked to changes in brain ceramide metabolism.
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Affiliation(s)
- Liubov S Kalinichenko
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Zacharias Kohl
- Division of Molecular Neurology, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
- Center for Rare Diseases Erlangen (ZSEER), University Hospital Erlangen, Erlangen, Germany
- Department of Neurology, University of Regensburg, Regensburg, Germany
| | - Christiane Mühle
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Zurina Hassan
- Centre for Drug Research, Universiti Sains Malaysia, Penang, Malaysia
| | - Agnes Hahn
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Eva-Maria Schmitt
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Kilian Macht
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Lyubomir Stoyanov
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Schayan Moghaddami
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Roberto Bilbao
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Volker Eulenburg
- Department for Anesthesiology and Intensive Care, Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Jürgen Winkler
- Division of Molecular Neurology, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
- Center for Rare Diseases Erlangen (ZSEER), University Hospital Erlangen, Erlangen, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Christian P Müller
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
- Centre for Drug Research, Universiti Sains Malaysia, Penang, Malaysia
- Institute of Psychopharmacology, Central Institute of Mental Health, Faculty of Medicine Mannheim, University of Heidelberg, Heidelberg, Germany
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3
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Nordengen K, Morland C. From Synaptic Physiology to Synaptic Pathology: The Enigma of α-Synuclein. Int J Mol Sci 2024; 25:986. [PMID: 38256059 PMCID: PMC10815905 DOI: 10.3390/ijms25020986] [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: 11/30/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Alpha-synuclein (α-syn) has gained significant attention due to its involvement in neurodegenerative diseases, particularly Parkinson's disease. However, its normal function in the human brain is equally fascinating. The α-syn protein is highly dynamic and can adapt to various conformational stages, which differ in their interaction with synaptic elements, their propensity to drive pathological aggregation, and their toxicity. This review will delve into the multifaceted role of α-syn in different types of synapses, shedding light on contributions to neurotransmission and overall brain function. We describe the physiological role of α-syn at central synapses, including the bidirectional interaction between α-syn and neurotransmitter systems.
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Affiliation(s)
- Kaja Nordengen
- Department of Neurology, Oslo University Hospital, 0424 Oslo, Norway
| | - Cecilie Morland
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, The Faculty of Mathematics and Natural Sciences, University of Oslo, 1068 Oslo, Norway
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Kalinderi K, Papaliagkas V, Fidani L. Current genetic data on depression and anxiety in Parkinson's disease patients. Parkinsonism Relat Disord 2024; 118:105922. [PMID: 37935601 DOI: 10.1016/j.parkreldis.2023.105922] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/15/2023] [Accepted: 10/30/2023] [Indexed: 11/09/2023]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder affecting about 1 % of the population over the age of 60 years. PD is characterized by a wide spectrum of symptomatology including not only motor symptoms but non-motor symptoms, as well. Depression is one of the most common non-motor manifestations, and the most frequent neuropsychiatric comorbidity in PD. Neuropsychiatric symptoms like depression and anxiety may precede the appearance of motor features, highlighting their importance in the early detection of the disease and its strategic management. This review discusses the possible genetic background of the development of these neuropsychiatric symptoms in PD patients analyzing current genetic data associated with this clinical entity.
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Affiliation(s)
- Kallirhoe Kalinderi
- Laboratory of Medical Biology-Genetics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
| | - Vasileios Papaliagkas
- Department of Biomedical Sciences, School of Health Sciences, International Hellenic University, 57400, Thessaloniki, Greece
| | - Liana Fidani
- Laboratory of Medical Biology-Genetics, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
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5
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Alwani A, Maziarz K, Burda G, Jankowska-Kiełtyka M, Roman A, Łyszczarz G, Er S, Barut J, Barczyk-Woźnicka O, Pyza E, Kreiner G, Nalepa I, Chmielarz P. Investigating the potential effects of α-synuclein aggregation on susceptibility to chronic stress in a mouse Parkinson's disease model. Pharmacol Rep 2023; 75:1474-1487. [PMID: 37725330 PMCID: PMC10661792 DOI: 10.1007/s43440-023-00530-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/30/2023] [Accepted: 09/03/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Parkinson's disease (PD) is a motor disorder characterized by the degeneration of dopaminergic neurons, putatively due to the accumulation of α-synuclein (α-syn) in Lewy bodies (LBs) in Substantia Nigra. PD is also associated with the formation of LBs in brain areas responsible for emotional and cognitive regulation such as the amygdala and prefrontal cortex, and concurrent depression prevalence in PD patients. The exact link between dopaminergic cell loss, α-syn aggregation, depression, and stress, a major depression risk factor, is unclear. Therefore, we aimed to explore the interplay between sensitivity to chronic stress and α-syn aggregation. METHODS Bilateral injections of α-syn preformed fibrils (PFFs) into the striatum of C57Bl/6 J mice were used to induce α-syn aggregation. Three months after injections, animals were exposed to chronic social defeat stress. RESULTS α-syn aggregation did not affect stress susceptibility but independently caused increased locomotor activity in the open field test, reduced anxiety in the light-dark box test, and increased active time in the tail suspension test. Ex vivo analysis revealed modest dopaminergic neuron loss in the substantia nigra and reduced dopaminergic innervation in the dorsal striatum in PFFs injected groups. α-Syn aggregates were prominent in the amygdala, prefrontal cortex, and substantia nigra, with minimal α-syn aggregation in the raphe nuclei and locus coeruleus. CONCLUSIONS Progressive bilateral α-syn aggregation might lead to compensatory activity increase and alterations in emotionally regulated behavior, without affecting stress susceptibility. Understanding how α-syn aggregation and degeneration in specific brain structures contribute to depression and anxiety in PD patients requires further investigation.
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Affiliation(s)
- Anna Alwani
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Katarzyna Maziarz
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Gabriela Burda
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Monika Jankowska-Kiełtyka
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Adam Roman
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Gabriela Łyszczarz
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Safak Er
- Faculty of Pharmacy, Drug Research Program, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Justyna Barut
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Olga Barczyk-Woźnicka
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Kraków, Poland
| | - Elżbieta Pyza
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Kraków, Poland
| | - Grzegorz Kreiner
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Irena Nalepa
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Piotr Chmielarz
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland.
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Lai TT, Gericke B, Feja M, Conoscenti M, Zelikowsky M, Richter F. Anxiety in synucleinopathies: neuronal circuitry, underlying pathomechanisms and current therapeutic strategies. NPJ Parkinsons Dis 2023; 9:97. [PMID: 37349373 DOI: 10.1038/s41531-023-00547-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023] Open
Abstract
Synucleinopathies are neurodegenerative disorders characterized by alpha-synuclein (αSyn) accumulation in neurons or glial cells, including Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). αSyn-related pathology plays a critical role in the pathogenesis of synucleinopathies leading to the progressive loss of neuronal populations in specific brain regions and the development of motor and non-motor symptoms. Anxiety is among the most frequent non-motor symptoms in patients with PD, but it remains underrecognized and undertreated, which significantly reduces the quality of life for patients. Anxiety is defined as a neuropsychiatric complication with characteristics such as nervousness, loss of concentration, and sweating due to the anticipation of impending danger. In patients with PD, neuropathology in the amygdala, a central region in the anxiety and fear circuitry, may contribute to the high prevalence of anxiety. Studies in animal models reported αSyn pathology in the amygdala together with alteration of anxiety or fear learning response. Therefore, understanding the progression, extent, and specifics of pathology in the anxiety and fear circuitry in synucleinopathies will suggest novel approaches to the diagnosis and treatment of neuropsychiatric symptoms. Here, we provide an overview of studies that address neuropsychiatric symptoms in synucleinopathies. We offer insights into anxiety and fear circuitry in animal models and the current implications for therapeutic intervention. In summary, it is apparent that anxiety is not a bystander symptom in these disorders but reflects early pathogenic mechanisms in the cortico-limbic system which may even contribute as a driver to disease progression.
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Affiliation(s)
- Thuy Thi Lai
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine, Hannover, Germany
- Center for Systems Neuroscience, Hannover, Germany
| | - Birthe Gericke
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine, Hannover, Germany
- Center for Systems Neuroscience, Hannover, Germany
| | - Malte Feja
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine, Hannover, Germany
- Center for Systems Neuroscience, Hannover, Germany
| | | | | | - Franziska Richter
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine, Hannover, Germany.
- Center for Systems Neuroscience, Hannover, Germany.
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7
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Lamontagne-Proulx J, Coulombe K, Morissette M, Rieux M, Calon F, Di Paolo T, Soulet D. Sex and Age Differences in a Progressive Synucleinopathy Mouse Model. Biomolecules 2023; 13:977. [PMID: 37371557 DOI: 10.3390/biom13060977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/22/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
The mutation and overexpression of the alpha-synuclein protein (αSyn), described as synucleinopathy, is associated with Parkinson's disease (PD)-like pathologies. A higher prevalence of PD is documented for men versus women, suggesting female hormones' implication in slowing PD progression. The nigrostriatal dopamine (DA) neurons in rodent males are more vulnerable to toxins than those in females. The effect of biological sex on synucleinopathy remains poorly described and was investigated using mice knocked out for murine αSyn (SNCA-/-) and also overexpressing human αSyn (SNCA-OVX) compared to wildtype (WT) mice. All the mice showed decreased locomotor activity with age, and more abruptly in the male than in the female SNCA-OVX mice; anxiety-like behavior increased with age. The SNCA-OVX mice had an age-dependent accumulation of αSyn. Older age was associated with the loss of nigral DA neurons and decreased striatal DA contents. The astrogliosis, microgliosis, and cytokine concentrations increased with aging. More abrupt nigrostriatal DA decreases and increased microgliosis were observed in the male SNCA-OVX mice. Human αSyn overexpression and murine αSyn knockout resulted in behavioral dysfunctions, while only human αSyn overexpression was toxic to DA neurons. At 18 months, neuroprotection was lost in the female SNCA-OVX mice, with a likely loss of estrus cycles. In conclusion, sex-dependent αSyn toxicity was observed, affecting the male mice more significantly.
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Affiliation(s)
- Jérôme Lamontagne-Proulx
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
- Laboratoire International Associé OptiNutriBrain (NutriNeuro France-INAF Canada), Québec, QC G1V 0A6, Canada
| | - Katherine Coulombe
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Marc Morissette
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Marie Rieux
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Frédéric Calon
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
- Laboratoire International Associé OptiNutriBrain (NutriNeuro France-INAF Canada), Québec, QC G1V 0A6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, 2440, Boulevard Hochelaga, Bureau 1705, Québec, QC G1V 0A6, Canada
| | - Thérèse Di Paolo
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
- Laboratoire International Associé OptiNutriBrain (NutriNeuro France-INAF Canada), Québec, QC G1V 0A6, Canada
| | - Denis Soulet
- Centre de Recherche du CHU de Québec, Axe Neurosciences, T2-32, 2705, Boulevard Laurier, Québec, QC G1V 4G2, Canada
- Laboratoire International Associé OptiNutriBrain (NutriNeuro France-INAF Canada), Québec, QC G1V 0A6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, 2440, Boulevard Hochelaga, Bureau 1705, Québec, QC G1V 0A6, Canada
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8
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Hayley S, Vahid-Ansari F, Sun H, Albert PR. Mood disturbances in Parkinson's disease: From prodromal origins to application of animal models. Neurobiol Dis 2023; 181:106115. [PMID: 37037299 DOI: 10.1016/j.nbd.2023.106115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 03/09/2023] [Accepted: 04/05/2023] [Indexed: 04/12/2023] Open
Abstract
Parkinson's disease (PD) is a complex illness with a constellation of environmental insults and genetic vulnerabilities being implicated. Strikingly, many studies only focus on the cardinal motor symptoms of the disease and fail to appreciate the major non-motor features which typically occur early in the disease process and are debilitating. Common comorbid psychiatric features, notably clinical depression, as well as anxiety and sleep disorders are thought to emerge before the onset of prominent motor deficits. In this review, we will delve into the prodromal stage of PD and how early neuropsychiatric pathology might unfold, followed by later motor disturbances. It is also of interest to discuss how animal models of PD capture the complexity of the illness, including depressive-like characteristics along with motor impairment. It remains to be determined how the underlying PD disease processes contributes to such comorbidity. But some of the environmental toxicants and microbial pathogens implicated in PD might instigate pro-inflammatory effects favoring α-synuclein accumulation and damage to brainstem neurons fueling the evolution of mood disturbances. We posit that comprehensive animal-based research approaches are needed to capture the complexity and time-dependent nature of the primary and co-morbid symptoms. This will allow for the possibility of early intervention with more novel and targeted treatments that fit with not only individual patient variability, but also with changes that occur over time with the evolution of the disease.
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Affiliation(s)
- S Hayley
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada.
| | - F Vahid-Ansari
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
| | - H Sun
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
| | - P R Albert
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
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9
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The Role of α-Synuclein in the Regulation of Serotonin System: Physiological and Pathological Features. Biomedicines 2023; 11:biomedicines11020541. [PMID: 36831077 PMCID: PMC9953742 DOI: 10.3390/biomedicines11020541] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/30/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
In patients affected by Parkinson's disease (PD), up to 50% of them experience cognitive changes, and psychiatric disturbances, such as anxiety and depression, often precede the onset of motor symptoms and have a negative impact on their quality of life. Pathologically, PD is characterized by the loss of dopamine (DA) neurons in the substantia nigra pars compacta (SNc) and the presence of intracellular inclusions, called Lewy bodies and Lewy neurites, composed mostly of α-synuclein (α-Syn). Much of PD research has focused on the role of α-Syn aggregates in the degeneration of SNc DA neurons due to the impact of striatal DA deficits on classical motor phenotypes. However, abundant Lewy pathology is also found in other brain regions including the midbrain raphe nuclei, which may contribute to non-motor symptoms. Indeed, dysfunction of the serotonergic (5-HT) system, which regulates mood and emotional pathways, occurs during the premotor phase of PD. However, little is known about the functional consequences of α-Syn inclusions in this neuronal population other than DA neurons. Here, we provide an overview of the current knowledge of α-Syn and its role in regulating the 5-HT function in health and disease. Understanding the relative contributions to α-Syn-linked alterations in the 5-HT system may provide a basis for identifying PD patients at risk for developing depression and could lead to a more targeted therapeutic approach.
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10
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Increased Expression of Alpha-, Beta-, and Gamma-Synucleins in Brainstem Regions of a Non-Human Primate Model of Parkinson’s Disease. Int J Mol Sci 2022; 23:ijms23158586. [PMID: 35955716 PMCID: PMC9369189 DOI: 10.3390/ijms23158586] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022] Open
Abstract
Parkinson’s disease (PD) is characterized by cell loss in the substantia nigra and the presence of alpha-synuclein (α-syn)-containing neuronal Lewy bodies. While α-syn has received major interest in the pathogenesis of PD, the function of beta- and gamma-synucleins (β-syn and γ-syn, respectively) is not really known. Yet, these proteins are members of the same family and also concentrated in neuronal terminals. The current preclinical study investigated the expression levels of α-, β-, and γ-synucleins in brainstem regions involved in PD physiopathology. We analyzed synuclein expression in the substantia nigra, raphe nuclei, pedunculopontine nucleus, and locus coeruleus from control and parkinsonian (by MPTP) macaques. MPTP-intoxicated monkeys developed a more or less severe parkinsonian score and were sacrificed after a variable post-MPTP period ranging from 1 to 20 months. The expression of the three synucleins was increased in the substantia nigra after MPTP, and this increase correlates positively, although not very strongly, with cell loss and motor score and not with the time elapsed after intoxication. In the dorsal raphe nucleus, the expression of the three synucleins was also increased, but only α- and γ-Syn are linked to the motor score and associated cell loss. Finally, although no change in synuclein expression was demonstrated in the locus coeruleus after MPTP, we found increased expression levels of γ-Syn, which are only correlated with cell loss in the pedunculopontine nucleus. Altogether, our data suggest that these proteins may play a key role in brainstem regions and mesencephalic tegmentum. Given the involvement of these brain regions in non-motor symptoms of PD, these data also strengthen the relevance of the MPTP macaque model of PD, which exhibits pathological changes beyond nigral DA cell loss and α-synucleinopathy.
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11
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Hwang Y, Kim HC, Shin EJ. BKM120 alters the migration of doublecortin-positive cells in the dentate gyrus of mice. Pharmacol Res 2022; 179:106226. [PMID: 35460881 DOI: 10.1016/j.phrs.2022.106226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 03/28/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022]
Abstract
BKM120 is an inhibitor of class I phosphoinositide 3-kinases and its anti-cancer effects have been demonstrated in various solid cancer models. BKM120 is highly brain permeable and has been reported to induce mood disturbances in clinical trials. Therefore, we examined whether BKM120 produces anxiety- and depression-like behaviors in mice, as with patients receiving BKM120 in clinical trials. In this study, repeated BKM120 treatment (2.0 or 5.0mg/kg, i.p., five times at 12-h interval) significantly induced anxiety- and depression-like behaviors in mice. Although abnormal changes in hippocampal neurogenesis have been suggested to, at least in part, associated with the pathogenesis of depression and anxiety, BKM120 did not affect the incorporation of 5-bromo-2'-deoxyuridine or the expression of doublecortin (DCX); however, it significantly enhanced the radial migration of DCX-positive cells in the dentate gyrus. BKM120-induced changes in migration were not accompanied by obvious neuronal damage in the hippocampus. Importantly, BKM120-induced anxiety- and depression-like behaviors were positively correlated with the extent of DCX-positive cell migration. Concomitantly, p-Akt expression was significantly decreased in the dentate gyrus. Moreover, the expression of p-c-Jun N-terminal kinase (JNK), p-DCX, and Ras homolog family member A (RhoA)-GTP decreased significantly, particularly in aberrantly migrated DCX-positive cells. Together, the results suggest that repeated BKM120 treatment enhances the radial migration of DCX-positive cells and induces anxiety- and depression-like behaviors by regulating the activity of Akt, JNK, DCX, and RhoA in the dentate gyrus. It also suggests that the altered migration of adult-born neurons in the dentate gyrus plays a role in mood disturbances.
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Affiliation(s)
- Yeonggwang Hwang
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea.
| | - Eun-Joo Shin
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea.
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12
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Structural Plasticity of the Hippocampus in Neurodegenerative Diseases. Int J Mol Sci 2022; 23:ijms23063349. [PMID: 35328770 PMCID: PMC8955928 DOI: 10.3390/ijms23063349] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 12/10/2022] Open
Abstract
Neuroplasticity is the capacity of neural networks in the brain to alter through development and rearrangement. It can be classified as structural and functional plasticity. The hippocampus is more susceptible to neuroplasticity as compared to other brain regions. Structural modifications in the hippocampus underpin several neurodegenerative diseases that exhibit cognitive and emotional dysregulation. This article reviews the findings of several preclinical and clinical studies about the role of structural plasticity in the hippocampus in neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, and multiple sclerosis. In this study, literature was surveyed using Google Scholar, PubMed, Web of Science, and Scopus, to review the mechanisms that underlie the alterations in the structural plasticity of the hippocampus in neurodegenerative diseases. This review summarizes the role of structural plasticity in the hippocampus for the etiopathogenesis of neurodegenerative diseases and identifies the current focus and gaps in knowledge about hippocampal dysfunctions. Ultimately, this information will be useful to propel future mechanistic and therapeutic research in neurodegenerative diseases.
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13
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Miquel-Rio L, Alarcón-Arís D, Torres-López M, Cóppola-Segovia V, Pavia-Collado R, Paz V, Ruiz-Bronchal E, Campa L, Casal C, Montefeltro A, Vila M, Artigas F, Revilla R, Bortolozzi A. Human α-synuclein overexpression in mouse serotonin neurons triggers a depressive-like phenotype. Rescue by oligonucleotide therapy. Transl Psychiatry 2022; 12:79. [PMID: 35210396 PMCID: PMC8873470 DOI: 10.1038/s41398-022-01842-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/15/2022] Open
Abstract
Anxiety and depression affect 35-50% of patients with Parkinson's disease (PD), often precede the onset of motor symptoms, and have a negative impact on their quality of life. Dysfunction of the serotonergic (5-HT) system, which regulates mood and emotional pathways, occurs during the premotor phase of PD and contributes to a variety of non-motor symptoms. Furthermore, α-synuclein (α-Syn) aggregates were identified in raphe nuclei in the early stages of the disease. However, there are very few animal models of PD-related neuropsychiatric disorders. Here, we develop a new mouse model of α-synucleinopathy in the 5-HT system that mimics prominent histopathological and neuropsychiatric features of human PD. We showed that adeno-associated virus (AAV5)-induced overexpression of wild-type human α-Syn (h-α-Syn) in raphe 5-HT neurons triggers progressive accumulation, phosphorylation, and aggregation of h-α-Syn protein in the 5-HT system. Specifically, AAV5-injected mice displayed axonal impairment in the output brain regions of raphe neurons, and deficits in brain-derived neurotrophic factor (BDNF) expression and 5-HT neurotransmission, resulting in a depressive-like phenotype. Intracerebroventricular treatment with an indatraline-conjugated antisense oligonucleotide (IND-ASO) for four weeks induced an effective and safe reduction of h-α-Syn synthesis in 5-HT neurons and its accumulation in the forebrain, alleviating early deficits of 5-HT function and improving the behavioural phenotype. Altogether, our findings show that α-synucleinopathy in 5-HT neurons negatively affects brain circuits that control mood and emotions, resembling the expression of neuropsychiatric symptoms occurring at the onset of PD. Early preservation of 5-HT function by reducing α-Syn synthesis/accumulation may alleviate PD-related depressive symptoms.
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Affiliation(s)
- Lluis Miquel-Rio
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain.,Universitat de Barcelona (UB), 08036, Barcelona, Spain
| | - Diana Alarcón-Arís
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain
| | - María Torres-López
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain
| | - Valentín Cóppola-Segovia
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Federal University of Paraná (UFPR), Curitiba, 81531-980, Brazil
| | - Rubén Pavia-Collado
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain
| | - Verónica Paz
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain
| | - Esther Ruiz-Bronchal
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain
| | - Leticia Campa
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain
| | - Carme Casal
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain
| | | | - Miquel Vila
- Neurodegenerative Diseases Research Group, Vall d'Hebron Research Institute, 08035, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), ISCIII, 28031, Madrid, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), 08010, Barcelona, Spain
| | - Francesc Artigas
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain
| | | | - Analia Bortolozzi
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Spanish National Research Council (CSIC), 08036, Barcelona, Spain. .,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036, Barcelona, Spain. .,Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), ISCIII, 28029, Madrid, Spain.
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14
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Ho H, Jose I, Cheesman M, Garrison C, Bishop K, Taber S, Witt J, Sin MK. Depression and Anxiety Management in Parkinson Disease. J Neurosci Nurs 2021; 53:170-176. [PMID: 34116559 DOI: 10.1097/jnn.0000000000000596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT BACKGROUND: Depression and anxiety are common but underrecognized and undertreated nonmotor symptoms of Parkinson disease (PD) due to their diagnostic criteria overlapping with other PD symptoms, limited randomized controlled studies in this specific population, and the need for multidisciplinary expertise. The purpose of this article is to offer evidence-based solutions for managing comorbid depression and anxiety in patients with PD through a case study analysis. CASE STUDY: A case study is used to illustrate the somatic manifestations of anxiety in PD that leads to diagnostic challenge and multidisciplinary management. MANAGEMENT CONSIDERATIONS: The appropriate use of screening tools, pharmacological and nonpharmacological management, and education are important interventions to consider when treating depression and anxiety in PD. CONCLUSION: Effective management requires accurate assessments, individualized treatment modalities, and patient education. Nurses who are knowledgeable about the effects and management of mood disorders in PD can play an integral role in the multidisciplinary team approach for assessment, patient and caregiver education, and treatment plan implementation.
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15
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Du T, Li G, Luo H, Pan Y, Xu Q, Ma K. Hippocampal alpha-synuclein mediates depressive-like behaviors. Brain Behav Immun 2021; 95:226-237. [PMID: 33775831 DOI: 10.1016/j.bbi.2021.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/28/2021] [Accepted: 03/22/2021] [Indexed: 02/08/2023] Open
Abstract
Alpha-synuclein (α-syn) which encoded by SNCA plays a critical role in the neurotransmission, vesicle dynamics, and neuroplasticity. Alteration to SNCA expression is associated with major depressive disorder. However, the pathogenic mechanism of SNCA in depression remains unknown. Herein, we reported that SNCA was up-regulated in the peripheral blood of major depressive disorder (MDD) patients and the depressive mice. Chronic restraint stress (CRS) also up-regulated the SNCA expression in the hippocampus. Moreover, over-expression of SNCA in the hippocampus triggered spontaneous depressive-like behaviors under the non-stressed conditions in mice, and knockout of SNCA could reverse CRS-induced depressive-like behaviors. SNCA led to synapse loss and neuronal cell death in the hippocampus possibly via complement-mediated microglial engulfment and inflammation, and thus contributed to the pathogenesis of depressive disorder. Overall, hippocampal SNCA and complement system are involved in the pathogenesis of depressive disorder and it provides a new perspective for the occurrence of depressive disorder.
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Affiliation(s)
- Tingfu Du
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China; Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China.
| | - Guoxiang Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Haiyu Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Yue Pan
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Qi Xu
- Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China; Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005 China.
| | - Kaili Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China; Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China.
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16
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Mondal R, Campoy ADT, Liang C, Mukherjee J. [ 18 F]FDG PET/CT Studies in Transgenic Hualpha-Syn (A53T) Parkinson's Disease Mouse Model of α-Synucleinopathy. Front Neurosci 2021; 15:676257. [PMID: 34211366 PMCID: PMC8239288 DOI: 10.3389/fnins.2021.676257] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/20/2021] [Indexed: 12/31/2022] Open
Abstract
Transgenic mice line M83 that express the A53T mutant α-synuclein protein at six times the level of endogenous mice α-synuclein are a model of α-synucleinopathy found in Parkinson's disease (PD). This Hualpha-Syn (A53T) PD model is useful in assessing non-motor deficits at earlier stages of onset of PD. We report findings on metabolic changes using [18F]FDG PET/CT in the Hualpha-Syn (A53T) PD mouse model in comparison to non-carrier mice. Whole-body PET/CT imaging of male and female mice were carried out 2 h after [18F]FDG ip administration under 3% isoflurane anesthesia. Brain images were analyzed with PET images coregistered to a mouse brain MRI template. Hualpha-Syn (A53T) mice had significantly lower [18F]FDG uptake in several brain regions compared to the no-carrier mice. Significant hind limb muscle and lower spinal cord [18F]FDG hypometabolism at 9 months of age in A53T PD mice was also indicative of neurodegenerative disease, with a progressive motoric dysfunction leading to death. Significant decrease (up to 30%) in [18F]FDG uptake were observed in 9-month old male and female Hualpha-Syn (A53) mice. This is consistent with the cortical hypometabolism in PD patients. Hualpha-Syn (A53) mice may thus be a suitable model for studies related to PD α-synucleinopathy for the discovery of new biomarkers.
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Affiliation(s)
| | | | | | - Jogeshwar Mukherjee
- Preclinical Imaging, Department of Radiological Sciences, University of California, Irvine, Irvine, CA, United States
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17
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Rhein C, Zoicas I, Marx LM, Zeitler S, Hepp T, von Zimmermann C, Mühle C, Richter-Schmidinger T, Lenz B, Erim Y, Reichel M, Gulbins E, Kornhuber J. mRNA Expression of SMPD1 Encoding Acid Sphingomyelinase Decreases upon Antidepressant Treatment. Int J Mol Sci 2021; 22:ijms22115700. [PMID: 34071826 PMCID: PMC8198802 DOI: 10.3390/ijms22115700] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/14/2021] [Accepted: 05/23/2021] [Indexed: 12/24/2022] Open
Abstract
Major depressive disorder (MDD) is a severe psychiatric condition with key symptoms of low mood and lack of motivation, joy, and pleasure. Recently, the acid sphingomyelinase (ASM)/ceramide system has been implicated in the pathogenesis of MDD. ASM is a lysosomal glycoprotein that catalyzes the hydrolysis of sphingomyelin, an abundant component of membranes, into the bioactive sphingolipid ceramide, which impacts signaling pathways. ASM activity is inhibited by several common antidepressant drugs. Human and murine studies have confirmed that increased ASM activity and ceramide levels are correlated with MDD. To define a molecular marker for treatment monitoring, we investigated the mRNA expression of SMPD1, which encodes ASM, in primary cell culture models, a mouse study, and a human study with untreated MDD patients before and after antidepressive treatment. Our cell culture study showed that a common antidepressant inhibited ASM activity at the enzymatic level and also at the transcriptional level. In a genetically modified mouse line with depressive-like behavior, Smpd1 mRNA expression in dorsal hippocampal tissue was significantly decreased after treatment with a common antidepressant. The large human study showed that SMPD1 mRNA expression in untreated MDD patients decreased significantly after antidepressive treatment. This translational study shows that SMPD1 mRNA expression could serve as a molecular marker for treatment and adherence monitoring of MDD.
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Affiliation(s)
- Cosima Rhein
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
- Department of Psychosomatic Medicine and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany; (T.H.); (Y.E.)
- Correspondence: ; Tel.: +49-9131-85-44542
| | - Iulia Zoicas
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Lena M. Marx
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Stefanie Zeitler
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Tobias Hepp
- Department of Psychosomatic Medicine and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany; (T.H.); (Y.E.)
- Institute of Medical Informatics, Biometry and Epidemiology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany
| | - Claudia von Zimmermann
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Christiane Mühle
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Tanja Richter-Schmidinger
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Bernd Lenz
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
- Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, Heidelberg University, D-68159 Mannheim, Germany
| | - Yesim Erim
- Department of Psychosomatic Medicine and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91054 Erlangen, Germany; (T.H.); (Y.E.)
| | - Martin Reichel
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
| | - Erich Gulbins
- Department of Molecular Biology, University Hospital, University of Duisburg-Essen, D-45147 Essen, Germany;
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany; (I.Z.); (L.M.M.); (S.Z.); (C.v.Z.); (C.M.); (T.R.-S.); (B.L.); (M.R.); (J.K.)
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18
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Jiang YF, Liu J, Yang J, Guo Y, Hu W, Zhang J, La XM, Xie W, Wang HS, Zhang L. Involvement of the Dorsal Hippocampus 5-HT1A Receptors in the Regulation of Depressive-Like Behaviors in Hemiparkinsonian Rats. Neuropsychobiology 2021; 79:198-207. [PMID: 31940619 DOI: 10.1159/000505212] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 12/02/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Depression is one of the most common neuropsychiatric disturbances in Parkinson's disease (PD), but its pathophysiology is not definite. Lines of evidence have indicated that the hippocampus and serotonin 1A (5-HT1A) receptors are related to the regulation of depression. OBJECTIVE The purpose of the present study was to observe the effect of 5-HT1A receptors in the dorsal hippocampus (dHIP) on PD-related depression in rats. METHODS Unilateral 6-hydroxydopamine lesioning of the medial forebrain bundle (MFB) was used to establish the hemiparkinsonian rat model. The effects of intra-dHIP injection of the 5-HT1A receptor -agonist 8-hydroxy-2-(dipropylamino)tetralin hydrobromide (8-OH-DPAT) or antagonist WAY-100635 on depressive-like behaviors were observed in sucrose preference and forced swim tests in control and lesioned rats. Monoamine levels including dopamine (DA), 5-HT, and noradrenaline (NA) in depression-related brain regions were determined by a neurochemical method in all groups. RESULTS Behavioral results showed that MFB lesions induced depressive-like behaviors. Intra-dHIP injection of 8-OH-DPAT produced antidepressant effects, while WAY-100635 induced or increased the depressive-like behaviors in both control and the lesioned rats. Neurochemical results found that intra-dHIP injection of 8-OH-DPAT significantly increased DA and 5-HT levels in the medial prefrontal cortex (mPFC), lateral habenula (LHb), ventral hippocampus and amygdala in the lesioned group and decreased NA levels in the mPFC and LHb in the control group. Moreover, after injection of WAY-100635, NA levels in all these regions of the lesioned group were significantly increased. CONCLUSIONS These findings suggest that hippocampal 5-HT1A receptors regulate depression and PD-related depression by neurochemical mechanisms.
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Affiliation(s)
- Yi-Fan Jiang
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China.,Department of Clinical Medicine, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Jian Liu
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Jie Yang
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Yuan Guo
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Wei Hu
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China.,Department of Clinical Medicine, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Jin Zhang
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Xue-Mei La
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China.,Department of Stomatology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Wen Xie
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Hui-Sheng Wang
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Li Zhang
- Department of Physiology and Pathophysiology, School of Medicine, Xi'an Jiaotong University, Xi'an, China,
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19
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Zeitler S, Schumacher F, Monti J, Anni D, Guhathakurta D, Kleuser B, Friedland K, Fejtová A, Kornhuber J, Rhein C. Acid Sphingomyelinase Impacts Canonical Transient Receptor Potential Channels 6 (TRPC6) Activity in Primary Neuronal Systems. Cells 2020; 9:E2502. [PMID: 33218173 PMCID: PMC7698877 DOI: 10.3390/cells9112502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/16/2020] [Accepted: 11/13/2020] [Indexed: 12/30/2022] Open
Abstract
: The acid sphingomyelinase (ASM)/ceramide system exhibits a crucial role in the pathology of major depressive disorder (MDD). ASM hydrolyzes the abundant membrane lipid sphingomyelin to ceramide that regulates the clustering of membrane proteins via microdomain and lipid raft organization. Several commonly used antidepressants, such as fluoxetine, rely on the functional inhibition of ASM in terms of their antidepressive pharmacological effects. Transient receptor potential canonical 6 (TRPC6) ion channels are located in the plasma membrane of neurons and serve as receptors for hyperforin, a phytochemical constituent of the antidepressive herbal remedy St. John's wort. TRPC6 channels are involved in the regulation of neuronal plasticity, which likely contributes to their antidepressant effect. In this work, we investigated the impact of reduced ASM activity on the TRPC6 function in neurons. A lipidomic analysis of cortical brain tissue of ASM deficient mice revealed a decrease in ceramide/sphingomyelin molar ratio and an increase in sphingosine. In neurons with ASM deletion, hyperforin-mediated Ca2+-influx via TRPC6 was decreased. Consequently, downstream activation of nuclear phospho-cAMP response element-binding protein (pCREB) was changed, a transcriptional factor involved in neuronal plasticity. Our study underlines the importance of balanced ASM activity, as well as sphingolipidome composition for optimal TRPC6 function. A better understanding of the interaction of the ASM/ceramide and TRPC6 systems could help to draw conclusions about the pathology of MDD.
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Affiliation(s)
- Stefanie Zeitler
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Fabian Schumacher
- Department of Toxicology, University of Potsdam, 14558 Nuthetal, Germany;
- Department of Pharmacology & Toxicology, Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany;
- Institute of Molecular Biology, University of Duisburg-Essen, 45147 Essen, Germany
| | - Juliana Monti
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Daniela Anni
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Debarpan Guhathakurta
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Burkhard Kleuser
- Department of Pharmacology & Toxicology, Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany;
| | - Kristina Friedland
- Institute for Pharmacy and Biochemistry, Johannes-Gutenberg Universität Mainz, 55128 Mainz, Germany;
| | - Anna Fejtová
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
| | - Cosima Rhein
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (S.Z.); (J.M.); (D.A.); (D.G.); (A.F.); (J.K.)
- Department of Psychosomatic Medicine and Psychotherapy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
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Li Y, Jiao Q, Du X, Jiang H. Sirt1/FoxO1-Associated MAO-A Upregulation Promotes Depressive-Like Behavior in Transgenic Mice Expressing Human A53T α-Synuclein. ACS Chem Neurosci 2020; 11:3838-3848. [PMID: 33155799 DOI: 10.1021/acschemneuro.0c00628] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Nonmotor symptoms are of pivotal importance in Parkinson's disease (PD), among which depressive disorder occurs in more than 45% of PD cases. Decreased levels of noradrenaline (NA) and serotonin (5-HT) in the central nervous system are relevant to it; however, the underlying mechanism is largely unknown. To this end, we conducted behavioral assays to analyze the depressive phenotype in transgenic mice with overexpressed A53T human α-synuclein (A53T mice) and examined alterations of NAergic and 5-HTergic systems in the neuron degeneration, neurotransmitter production, and degradation aspects of the mouse. As compared to controls, A53T mice displayed elevated depressive-like behavior at 6 months, which presents earlier than motor deficits do at 12 months. We detected reduced levels of NA and 5-HT in the hippocampus and NA in the locus coeruleus of 6-month A53T mice. There was no loss of NAergic and 5-HTergic neurons or decreased neurotransmitter synthesis in the brain. However, the expression of MAO-A, an enzyme responsible for NA and 5-HT degradation, was upregulated in A53T mice. Mechanistically, Sirt1 was downregulated which lead to an increase in FoxO1 acetylation, which subsequently increased the transcription of MAO-A. Activation of Sirt1 by resveratrol or inhibition of MAO-A by moclobemide administration could restore brain NA and 5-HT levels and attenuate the depressive-like behavior of A53T mice. Taken together, our results provided a novel correlation between Sirt1 and MAO-A, and compounds targeting on these molecules are beneficial for improving depression in the A53T mouse model of PD.
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Affiliation(s)
- Yong Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, 266071 Qingdao, China
- Shandong Provincial Key Laboratory of Biochemical Engineering, Qingdao Nucleic Acid Rapid Detection Engineering Research Center, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China
| | - Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, 266071 Qingdao, China
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, 266071 Qingdao, China
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, 266071 Qingdao, China
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21
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Regensburger M, Stemick J, Masliah E, Kohl Z, Winner B. Intracellular A53T Mutant α-Synuclein Impairs Adult Hippocampal Newborn Neuron Integration. Front Cell Dev Biol 2020; 8:561963. [PMID: 33262984 PMCID: PMC7686440 DOI: 10.3389/fcell.2020.561963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 10/23/2020] [Indexed: 12/21/2022] Open
Abstract
Dendritic dysfunction is an early event in α-synuclein (α-syn) mediated neurodegeneration. Altered postsynaptic potential and loss of dendritic spines have been observed in different in vitro and in vivo models of synucleinopathies. The integration of newborn neurons into the hippocampus offers the possibility to study dendrite and spine formation in an adult environment. Specifically, survival of hippocampal adult newborn neurons is regulated by synaptic input and was reduced in a mouse model transgenic for human A53T mutant α-syn. We thus hypothesized that dendritic integration of newborn neurons is impaired in the adult hippocampus of A53T mice. We analyzed dendritic morphology of adult hippocampal neurons 1 month after retroviral labeling. Dendrite length was unchanged in the dentate gyrus of A53T transgenic mice. However, spine density and mushroom spine density of newborn neurons were severely decreased. In this mouse model, transgenic α-syn was expressed both within newborn neurons and within their environment. To specifically determine the cell autonomous effects, we analyzed cell-intrinsic overexpression of A53T α-syn using a retrovirus. Since A53T α-syn overexpressing newborn neurons exhibited decreased spine density 1 month after labeling, we conclude that cell-intrinsic A53T α-syn impairs postsynaptic integration of adult hippocampal newborn neurons. Our findings further support the role of postsynaptic degeneration as an early feature in synucleinopathies and provide a model system to study underlying mechanisms.
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Affiliation(s)
- Martin Regensburger
- Department of Stem Cell Biology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Center for Rare Diseases Erlangen (ZSEER), University Hospital Erlangen, Erlangen, Germany
| | - Judith Stemick
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Eliezer Masliah
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, United States.,Division of Neuroscience and Laboratory of Neurogenetics, National Institute on Aging, Bethesda, MD, United States
| | - Zacharias Kohl
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Department of Neurology, University of Regensburg, Regensburg, Germany
| | - Beate Winner
- Department of Stem Cell Biology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Center for Rare Diseases Erlangen (ZSEER), University Hospital Erlangen, Erlangen, Germany
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22
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Simple and Complex Sugars in Parkinson's Disease: a Bittersweet Taste. Mol Neurobiol 2020; 57:2934-2943. [PMID: 32430844 DOI: 10.1007/s12035-020-01931-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 05/01/2020] [Indexed: 12/18/2022]
Abstract
Neuronal homeostasis depends on both simple and complex sugars (the glycoconjugates), and derangement of their metabolism is liable to impair neural function and lead to neurodegeneration. Glucose levels boost glycation phenomena, a wide series of non-enzymatic reactions that give rise to various intermediates and end-products that are potentially dangerous in neurons. Glycoconjugates, including glycoproteins, glycolipids, and glycosaminoglycans, contribute to the constitution of the unique features of neuron membranes and extracellular matrix in the nervous system. Glycosylation defects are indeed frequently associated with nervous system disturbances and neurodegeneration. Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor and non-motor symptoms associated with the loss of dopaminergic neurons in the pars compacta of the substantia nigra. Neurons present intracytoplasmic inclusions of α-synuclein aggregates involved in the disease pathogenesis together with the impairment of the autophagy-lysosome function, oxidative stress, and defective traffic and turnover of membrane components. In the present review, we selected relevant recent contributions concerning the direct involvement of glycation and glycosylation in α-synuclein stability, impaired autophagy and lysosomal function in PD, focusing on potential models of PD pathogenesis provided by genetic variants of glycosphingolipid processing enzymes, especially glucocerebrosidase (GBA). Moreover, we collected data aimed at defining the glycomic profile of PD patients as a tool to help in diagnosis and patient subtyping, as well as those pointing to sugar-related compounds with potential therapeutic applications in PD.
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23
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Souza MF, Medeiros KAAL, Lins LCRF, Bispo JMM, Gois AM, Freire MAM, Marchioro M, Santos JR. Intracerebroventricular injection of deltamethrin increases locomotion activity and causes spatial working memory and dopaminergic pathway impairment in rats. Brain Res Bull 2019; 154:1-8. [PMID: 31606407 DOI: 10.1016/j.brainresbull.2019.10.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 09/18/2019] [Accepted: 10/05/2019] [Indexed: 12/14/2022]
Abstract
Deltamethrin (DM) is widely used in agriculture, veterinary medicine and control of domestic pests. Epidemiological studies suggest that DM exposure is a risk factor for neurodegenerative disorders such as Parkinson's (PD) and Alzheimer diseases; however the mechanisms are elusive. In the present study we evaluated the effects of intracerebroventricular (i.c.v.) administration of DM on locomotion activity, spatial working memory and dopaminergic pathway in the rat. Middle-aged male Wistar rats received three i.c.v. injections of DM 0.5 μg, DM 5 μg or vehicle, every other day. Across the treatment, the animals were submitted to behavioral evaluation in the catalepsy test, open field test, and spontaneous alternation task. Following completion of behavioral tests, rats were perfused and their brains were processed to tyrosine hydroxylase (TH) immunohistochemistry. We observed that i.c.v. administration of DM 5 μg increased locomotion activity (open field) and caused spatial working memory impairment (spontaneous alternation task). These alterations were accompanied by reduction TH immunoreactivity in the substantia nigra pars compacta (SNpc), ventral tegmental area (VTA) and dorsal striatum. Conversely, no motor change was observed in the catalepsy test. These results indicate that i.c.v. administration of DM can cause hyperactivity and cognitive alteration which may be related to disruption of the dopaminergic pathway.
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Affiliation(s)
- Marina F Souza
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Katty Anne A L Medeiros
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Lívia C R F Lins
- Department of Health Education, Federal University of Sergipe, Lagarto, SE, Brazil
| | - José M M Bispo
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Auderlan M Gois
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - Marco Aurelio M Freire
- Post Graduation Program in Health and Society, University of the State of Rio Grande do Norte, Mossoró, RN, Brazil; New Hope Faculty of Mossoró, RN, Brazil
| | - Murilo Marchioro
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil
| | - José R Santos
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil; Laboratory of Behavioral and Evolutionary Neurobiology, Department of Biosciences, Federal University of Sergipe, Itabaiana, SE, Brazil.
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Wihan J, Grosch J, Kalinichenko LS, Müller CP, Winkler J, Kohl Z. Layer-specific axonal degeneration of serotonergic fibers in the prefrontal cortex of aged A53T α-synuclein–expressing mice. Neurobiol Aging 2019; 80:29-37. [DOI: 10.1016/j.neurobiolaging.2019.03.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 02/25/2019] [Accepted: 03/23/2019] [Indexed: 01/07/2023]
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25
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Galts CP, Bettio LE, Jewett DC, Yang CC, Brocardo PS, Rodrigues ALS, Thacker JS, Gil-Mohapel J. Depression in neurodegenerative diseases: Common mechanisms and current treatment options. Neurosci Biobehav Rev 2019; 102:56-84. [DOI: 10.1016/j.neubiorev.2019.04.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/22/2019] [Accepted: 04/02/2019] [Indexed: 12/19/2022]
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Alpha-Synuclein RNA Expression is Increased in Major Depression. Int J Mol Sci 2019; 20:ijms20082029. [PMID: 31027150 PMCID: PMC6515395 DOI: 10.3390/ijms20082029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/18/2019] [Accepted: 04/20/2019] [Indexed: 01/08/2023] Open
Abstract
Alpha-synuclein (SNCA) is a small membrane protein that plays an important role in neuro-psychiatric diseases. It is best known for its abnormal subcellular aggregation in Lewy bodies that serves as a hallmark of Parkinson’s disease (PD). Due to the high comorbidity of PD with depression, we investigated the role of SNCA in patients suffering from major depressive disorder (MDD). SNCA mRNA expression levels were analyzed in peripheral blood cells of MDD patients and a healthy control group. SNCA mRNA expression was positively correlated with severity of depression as indicated by psychometric assessment. We found a significant increase in SNCA mRNA expression levels in severely depressed patients compared with controls. Thus, SNCA analysis could be a helpful target in the search for biomarkers of MDD.
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Cognitive and anxiety-like impairments accompanied by serotonergic ultrastructural and immunohistochemical alterations in early stages of parkinsonism. Brain Res Bull 2019; 146:213-223. [DOI: 10.1016/j.brainresbull.2019.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/04/2019] [Accepted: 01/07/2019] [Indexed: 12/21/2022]
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28
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Kalinichenko LS, Hammad L, Reichel M, Kohl Z, Gulbins E, Kornhuber J, Müller CP. Acid sphingomyelinase controls dopamine activity and responses to appetitive stimuli in mice. Brain Res Bull 2019; 146:310-319. [DOI: 10.1016/j.brainresbull.2019.01.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/18/2019] [Accepted: 01/29/2019] [Indexed: 12/16/2022]
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Serotonergic dysfunction in a model of parkinsonism induced by reserpine. J Chem Neuroanat 2019; 96:73-78. [DOI: 10.1016/j.jchemneu.2018.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/27/2018] [Accepted: 12/27/2018] [Indexed: 11/22/2022]
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30
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Agnihotri SK, Sun L, Yee BK, Shen R, Akundi RS, Zhi L, Duncan MJ, Cass WA, Büeler H. PINK1 deficiency is associated with increased deficits of adult hippocampal neurogenesis and lowers the threshold for stress-induced depression in mice. Behav Brain Res 2019; 363:161-172. [PMID: 30735759 DOI: 10.1016/j.bbr.2019.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 12/29/2022]
Abstract
Parkinson's disease (PD) is characterized by motor impairments and several non-motor features, including frequent depression and anxiety. Stress-induced deficits of adult hippocampal neurogenesis (AHN) have been linked with abnormal affective behavior in animals. It has been speculated that AHN defects may contribute to affective symptoms in PD, but this hypothesis remains insufficiently tested in animal models. Mice that lack the PD-linked kinase PINK1 show impaired differentiation of adult-born neurons in the hippocampus. Here, we examined the relationship between AHN deficits and affective behavior in PINK1-/- mice under basal (no stress) conditions and after exposure to chronic stress. PINK1 loss and corticosterone negatively and jointly affected AHN, leading to lower numbers of neural stem cells and newborn neurons in the dentate gyrus of corticosterone-treated PINK1-/- mice. Despite increased basal AHN deficits, PINK1-deficient mice showed normal affective behavior. However, lack of PINK1 sensitized mice to corticosterone-induced behavioral despair in the tail suspension test at a dose where wildtype mice were unaffected. Moreover, after two weeks of chronic restraint stress male PINK1-/- mice displayed increased immobility in the forced swim test, and protein expression of the glucocorticoid receptor in the hippocampus was reduced. Thus, while impaired AHN as such is insufficient to cause affective dysfunction in this PD model, PINK1 deficiency may lower the threshold for chronic stress-induced depression in PD. Finally, PINK1-deficient mice displayed reduced basal voluntary wheel running but normal rotarod performance, a finding whose mechanisms remain to be determined.
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Affiliation(s)
- Sandeep K Agnihotri
- School of Life Science and Technology, Harbin Institute of Technology, 150080 Harbin, China
| | - Liuke Sun
- School of Life Science and Technology, Harbin Institute of Technology, 150080 Harbin, China
| | - Benjamin K Yee
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China
| | - Ruifang Shen
- School of Life Science and Technology, Harbin Institute of Technology, 150080 Harbin, China
| | - Ravi S Akundi
- Department of Neuroscience, University of Kentucky, Lexington KY 40536, USA
| | - Lianteng Zhi
- Department of Neuroscience, University of Kentucky, Lexington KY 40536, USA
| | - Marilyn J Duncan
- Department of Neuroscience, University of Kentucky, Lexington KY 40536, USA
| | - Wayne A Cass
- Department of Neuroscience, University of Kentucky, Lexington KY 40536, USA
| | - Hansruedi Büeler
- School of Life Science and Technology, Harbin Institute of Technology, 150080 Harbin, China.
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Living in Promiscuity: The Multiple Partners of Alpha-Synuclein at the Synapse in Physiology and Pathology. Int J Mol Sci 2019; 20:ijms20010141. [PMID: 30609739 PMCID: PMC6337145 DOI: 10.3390/ijms20010141] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/24/2018] [Accepted: 12/26/2018] [Indexed: 12/18/2022] Open
Abstract
Alpha-synuclein (α-syn) is a small protein that, in neurons, localizes predominantly to presynaptic terminals. Due to elevated conformational plasticity, which can be affected by environmental factors, in addition to undergoing disorder-to-order transition upon interaction with different interactants, α-syn is counted among the intrinsically disordered proteins (IDPs) family. As with many other IDPs, α-syn is considered a hub protein. This function is particularly relevant at synaptic sites, where α-syn is abundant and interacts with many partners, such as monoamine transporters, cytoskeletal components, lipid membranes, chaperones and synaptic vesicles (SV)-associated proteins. These protein–protein and protein–lipid membrane interactions are crucial for synaptic functional homeostasis, and alterations in α-syn can cause disruption of this complex network, and thus a failure of the synaptic machinery. Alterations of the synaptic environment or post-translational modification of α-syn can induce its misfolding, resulting in the formation of oligomers or fibrillary aggregates. These α-syn species are thought to play a pathological role in neurodegenerative disorders with α-syn deposits such as Parkinson’s disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA), which are referred to as synucleinopathies. Here, we aim at revising the complex and promiscuous role of α-syn at synaptic terminals in order to decipher whether α-syn molecular interactants may influence its conformational state, contributing to its aggregation, or whether they are just affected by it.
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Li Y, Jiao Q, Du X, Bi M, Han S, Jiao L, Jiang H. Investigation of Behavioral Dysfunctions Induced by Monoamine Depletions in a Mouse Model of Parkinson's Disease. Front Cell Neurosci 2018; 12:241. [PMID: 30135645 PMCID: PMC6092512 DOI: 10.3389/fncel.2018.00241] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 07/17/2018] [Indexed: 01/10/2023] Open
Abstract
Parkinson's disease (PD) is characterized not only by typical motor symptoms, but also by nonmotor symptoms in the early stages. In addition to the loss of dopaminergic (DAergic) neurons, progressive degenerations of noradrenergic (NA) and serotonergic (5-HT) neurons were also observed. However, the respective effects and interactions of these monoamine depletions on certain nonmotor symptoms are still largely unknown. In the present study, we performed selective depletions of NA, 5-HT and DA in mice by intraperitioneal injection of N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine hydrochloride (DSP-4), 4-chloro-L-phenylalanine (pCPA) and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP), respectively. DSP-4 led to a 34% decrease in the number of NAergic neurons in the locus coeruleus, and MPTP led to a 30% decrease in the number of DAergic neurons in the substantia nigra. Although there was no obvious change in the number of 5-HTergic neurons in the dorsal raphe nucleus after pCPA treatment, the levels of 5-HT and its metabolite in the frontal cortex and hippocampus were reduced, respectively. Locomotor activity deficit was induced by DA depletion and a decrease in traveled distance was potentiated by additional NA depletion. Despair-associated depressive-like behavior could be observed in every group. Anxiety states emerged only from the combined depletion of two or three monoamines. However, combined depletion of the three monoamines dramatically induced anhedonia, and it could also aggravate the depressive-like and anxiety behavior. Furthermore, NA depletion significantly reduced spatial learning and memory ability, which was not enhanced by additional 5-HT or DA depletion. Our data highlighted the interactive role of NA, 5-HT and DA in the motor, emotional and cognitive deficits, providing new insight into the complex orchestration of impaired monoaminergic systems that related to the pathology of PD.
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Affiliation(s)
- Yong Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Mingxia Bi
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Shuaishuai Han
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Lingling Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines, Physiology, Qingdao University Medical College, Qingdao University, Qingdao, China
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Levigoureux E, Bouillot C, Baron T, Zimmer L, Lancelot S. PET imaging of the influence of physiological and pathological α-synuclein on dopaminergic and serotonergic neurotransmission in mouse models. CNS Neurosci Ther 2018; 25:57-68. [PMID: 29781098 DOI: 10.1111/cns.12978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 12/22/2022] Open
Abstract
AIMS Alpha-synuclein (α-syn) aggregation is a neuropathological hallmark of neurodegenerative synucleinopathies. This in vivo study explored glucose metabolism and dopaminergic and serotoninergic neurotransmission in KO α-syn, wild-type mice and an accelerated murine model of synucleinopathy (M83). METHODS MicroPET acquisitions were performed in all animals aged 5-6 months using five radiotracers exploring brain glucose metabolism ([18 F]FDG), dopamine neurotransmission ([11 C]raclopride, [11 C]PE2I) and serotonin neurotransmission ([18 F]MPPF, [11 C]DASB). For all radiotracers, except [18 F]FDG, PET data were analyzed with a MRI-based VOI method and a voxel-based analysis. RESULTS MicroPET data showed a decrease in [11 C]raclopride uptake in the caudate putamen of KO α-syn mice, in comparison with M83 and WT mice, reflecting a lower concentration of D2 receptors. The increase in [18 F]MPPF uptake in M83 vs WT and KO mice indicates overexpression of 5-HT1A receptors. The lack of change in dopamine and serotonin transporters in all groups suggests unchanged neuronal density. CONCLUSIONS This PET study highlights an effect of α-syn modulation on the expression of the D2 receptor, whereas aggregated α-syn leads to overexpression of 5-HT1A receptor, as a pathophysiological signature.
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Affiliation(s)
- Elise Levigoureux
- Lyon Neuroscience Research Center, CNRS UMR5292, INSERM U1028, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.,Hospices Civils de Lyon, Lyon, France
| | | | - Thierry Baron
- ANSES - French Agency for Food, Environmental and Occupational Health & Safety, Lyon, France
| | - Luc Zimmer
- Lyon Neuroscience Research Center, CNRS UMR5292, INSERM U1028, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.,Hospices Civils de Lyon, Lyon, France.,CERMEP-Imaging Platform, Lyon, France
| | - Sophie Lancelot
- Lyon Neuroscience Research Center, CNRS UMR5292, INSERM U1028, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.,Hospices Civils de Lyon, Lyon, France.,CERMEP-Imaging Platform, Lyon, France
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34
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Huber SE, Zoicas I, Reichel M, Mühle C, Büttner C, Ekici AB, Eulenburg V, Lenz B, Kornhuber J, Müller CP. Prenatal androgen receptor activation determines adult alcohol and water drinking in a sex-specific way. Addict Biol 2018; 23:904-920. [PMID: 28776866 DOI: 10.1111/adb.12540] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 01/16/2023]
Abstract
Alcohol use disorders are major psychiatric disorders. Correlational studies in humans suggested organizational hormonal effects during embryonic development as a risk factor for adult alcohol dependence. Permanent changes can be induced by the activity of sex hormones, like testosterone. Here, we demonstrate a relationship between prenatal androgen receptor (AR)-activation and adult alcohol as well as water drinking in mice in a sex-dependent fashion. Prenatal AR inhibition using the antagonist flutamide decreased adult male alcohol consumption. In contrast, prenatal AR activation by dihydrotestosterone (DHT) led to an increase in adult alcohol consumption in females. These effects were different in adult water drinking, flutamide increased water consumption in females and DHT increased water consumption in males. Prenatal flutamide reduced locomotion and anxiety in adult males but was ineffective in females. We found that prenatal AR activation controls adult levels of monoaminergic modulatory transmitters in the brain and blood hormone levels in a sex-specific way. RNA-Seq analysis confirmed a prenatal AR mediated control of adult expression of alcohol drinking-related genes like Bdnf and Per2. These findings demonstrate that prenatal androgen activity is a risk factor for the establishment of alcohol consumption in adults by its organizational effects.
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Affiliation(s)
- Sabine E. Huber
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Iulia Zoicas
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Martin Reichel
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
- Department of Nephrology and Hypertension; Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Christiane Mühle
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Christian Büttner
- Institute of Human Genetics; Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Arif B. Ekici
- Institute of Human Genetics; Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Volker Eulenburg
- Institute of Biochemistry; Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Bernd Lenz
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
| | - Christian P. Müller
- Department of Psychiatry and Psychotherapy; University Clinic, Friedrich-Alexander-University Erlangen-Nuremberg; Germany
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35
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Yakhine-Diop SMS, Rodríguez-Arribas M, Martínez-Chacón G, Uribe-Carretero E, Gómez-Sánchez R, Aiastui A, López de Munain A, Bravo-San Pedro JM, Niso-Santano M, González-Polo RA, Fuentes JM. Acetylome in Human Fibroblasts From Parkinson's Disease Patients. Front Cell Neurosci 2018; 12:97. [PMID: 29719501 PMCID: PMC5913320 DOI: 10.3389/fncel.2018.00097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/22/2018] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is a multifactorial neurodegenerative disorder. The pathogenesis of this disease is associated with gene and environmental factors. Mutations in leucine-rich repeat kinase 2 (LRRK2) are the most frequent genetic cause of familial and sporadic PD. Moreover, posttranslational modifications, including protein acetylation, are involved in the molecular mechanism of PD. Acetylation of lysine proteins is a dynamic process that is modulated in PD. In this descriptive study, we characterized the acetylated proteins and peptides in primary fibroblasts from idiopathic PD (IPD) and genetic PD harboring G2019S or R1441G LRRK2 mutations. Identified acetylated peptides are modulated between individuals' groups. Although acetylated nuclear proteins are the most represented in cells, they are hypoacetylated in IPD. Results display that the level of hyperacetylated and hypoacetylated peptides are, respectively, enhanced in genetic PD and in IPD cells.
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Affiliation(s)
- Sokhna M S Yakhine-Diop
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - Mario Rodríguez-Arribas
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - Guadalupe Martínez-Chacón
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - Elisabet Uribe-Carretero
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - Rubén Gómez-Sánchez
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Ana Aiastui
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Cell Culture Plataform, Donostia University Hospital, San Sebastián, Spain.,Neuroscience Area of Biodonostia Health Research Institute, Donostia University Hospital, San Sebastián, Spain
| | - Adolfo López de Munain
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Neuroscience Area of Biodonostia Health Research Institute, Donostia University Hospital, San Sebastián, Spain.,Department of Neurology, Donostia University Hospital, San Sebastian, Spain.,Ilundain Fundazioa, San Sebastian, Spain.,Department of Neurosciences, University of the Basque Country UPV-EHU, San Sebastián, Spain
| | - José M Bravo-San Pedro
- Equipe 11 labellisèe Ligue Contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM U1138, Paris, France.,Université Paris Descartes/Paris V, Sorbonne Paris Cité, Paris, France.,Université Pierre et Marie Curie/Paris VI, Paris, France.,Gustave Roussy Comprehensive Cancer Institute, Villejuif, France
| | - Mireia Niso-Santano
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - Rosa A González-Polo
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
| | - José M Fuentes
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas, Madrid, Spain.,Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
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36
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Mo M, Xiao Y, Huang S, Cen L, Chen X, Zhang L, Luo Q, Li S, Yang X, Lin X, Xu P. MicroRNA expressing profiles in A53T mutant alpha-synuclein transgenic mice and Parkinsonian. Oncotarget 2018; 8:15-28. [PMID: 27965467 PMCID: PMC5352072 DOI: 10.18632/oncotarget.13905] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 12/01/2016] [Indexed: 12/23/2022] Open
Abstract
α-synuclein gene mutations can cause α-synuclein protein aggregation in the midbrain of Parkinson's disease (PD) patients. MicroRNAs (miRNAs) play a key role in the metabolism of α-synuclein but the mechanism involved in synucleinopathy remains unclear. In this study, we investigated the miRNA profiles in A53T-α-synuclein transgenic mice and analyzed the candidate miRNAs in the cerebrospinal fluid (CSF) of PD patients. The 12-month A53T-transgenic mouse displayed hyperactive movement and anxiolytic-like behaviors with α-synuclein aggregation in midbrain. A total of 317,759 total and 289,207 unique small RNA sequences in the midbrain of mice were identified by high-throughput deep sequencing. We found 644 miRNAs were significantly changed in the transgenic mice. Based on the conserved characteristic of miRNAs, we selected 11 candidates from the 40 remarkably expressed miRNAs and explored their expression in 44 CSF samples collected from PD patients. The results revealed that 11 microRNAs were differently expressed in CSF, emphatically as miR-144-5p, miR-200a-3p and miR-542-3p, which were dramatically up-regulated in both A53T-transgenic mice and PD patients, and had a helpful accuracy for the PD prediction. The ordered logistic regression analysis showed that the severity of PD has strong correlation with an up-expression of miR-144-5p, miR-200a-3p and miR-542-3p in CSF. Taken together, our data suggested that miRNAs in CSF, such as miR-144-5p, miR-200a-3p and miR-542-3p, may be useful to the PD diagnosis as potential biomarkers.
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Affiliation(s)
- Mingshu Mo
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Yousheng Xiao
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
| | - Shuxuan Huang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Luan Cen
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
| | - Xiang Chen
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
| | - Limin Zhang
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
| | - Qin Luo
- Department of Neurology, The Third Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Shaomin Li
- Ann Romney Center for Neurologic Disease, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Xinling Yang
- Department of Neurology, The Third Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xian Lin
- Department of Anatomy & Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangdong, China
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37
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Schwab K, Frahm S, Horsley D, Rickard JE, Melis V, Goatman EA, Magbagbeolu M, Douglas M, Leith MG, Baddeley TC, Storey JMD, Riedel G, Wischik CM, Harrington CR, Theuring F. A Protein Aggregation Inhibitor, Leuco-Methylthioninium Bis(Hydromethanesulfonate), Decreases α-Synuclein Inclusions in a Transgenic Mouse Model of Synucleinopathy. Front Mol Neurosci 2018; 10:447. [PMID: 29375308 PMCID: PMC5767730 DOI: 10.3389/fnmol.2017.00447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/21/2017] [Indexed: 12/13/2022] Open
Abstract
α-Synuclein (α-Syn) aggregation is a pathological feature of synucleinopathies, neurodegenerative disorders that include Parkinson's disease (PD). We have tested whether N,N,N',N'-tetramethyl-10H-phenothiazine-3,7-diaminium bis(hydromethanesulfonate) (leuco-methylthioninium bis(hydromethanesulfonate); LMTM), a tau aggregation inhibitor, affects α-Syn aggregation in vitro and in vivo. Both cellular and transgenic models in which the expression of full-length human α-Syn (h-α-Syn) fused with a signal sequence peptide to promote α-Syn aggregation were used. Aggregated α-Syn was observed following differentiation of N1E-115 neuroblastoma cells transfected with h-α-Syn. The appearance of aggregated α-Syn was inhibited by LMTM, with an EC50 of 1.1 μM, with minimal effect on h-α-Syn mRNA levels being observed. Two independent lines of mice (L58 and L62) transgenic for the same fusion protein accumulated neuronal h-α-Syn that, with aging, developed into fibrillary inclusions characterized by both resistance to proteinase K (PK)-cleavage and their ability to bind thiazin red. There was a significant decrease in α-Syn-positive neurons in multiple brain regions following oral treatment of male and female mice with LMTM administered daily for 6 weeks at 5 and 15 mg MT/kg. The early aggregates of α-Syn and the late-stage fibrillar inclusions were both susceptible to inhibition by LMTM, a treatment that also resulted in the rescue of movement and anxiety-related traits in these mice. The results suggest that LMTM may provide a potential disease modification therapy in PD and other synucleinopathies through the inhibition of α-Syn aggregation.
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Affiliation(s)
- Karima Schwab
- Institute of Pharmacology, Charite – Universitätsmedizin Berlin, Berlin, Germany
| | - Silke Frahm
- Institute of Pharmacology, Charite – Universitätsmedizin Berlin, Berlin, Germany
| | - David Horsley
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
| | - Janet E. Rickard
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
| | - Valeria Melis
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
| | - Elizabeth A. Goatman
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
| | - Mandy Magbagbeolu
- Institute of Pharmacology, Charite – Universitätsmedizin Berlin, Berlin, Germany
| | - Morag Douglas
- Department of Chemistry, University of Aberdeen, Aberdeen, United Kingdom
| | - Michael G. Leith
- Department of Chemistry, University of Aberdeen, Aberdeen, United Kingdom
| | - Thomas C. Baddeley
- Department of Chemistry, University of Aberdeen, Aberdeen, United Kingdom
- TauRx Therapeutics Ltd., Singapore, Singapore
| | - John M. D. Storey
- Department of Chemistry, University of Aberdeen, Aberdeen, United Kingdom
- TauRx Therapeutics Ltd., Singapore, Singapore
| | - Gernot Riedel
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
| | - Claude M. Wischik
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
- TauRx Therapeutics Ltd., Singapore, Singapore
| | - Charles R. Harrington
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
- TauRx Therapeutics Ltd., Singapore, Singapore
| | - Franz Theuring
- Institute of Pharmacology, Charite – Universitätsmedizin Berlin, Berlin, Germany
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38
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Grade S, Götz M. Neuronal replacement therapy: previous achievements and challenges ahead. NPJ Regen Med 2017; 2:29. [PMID: 29302363 PMCID: PMC5677983 DOI: 10.1038/s41536-017-0033-0] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/22/2017] [Accepted: 09/25/2017] [Indexed: 12/26/2022] Open
Abstract
Lifelong neurogenesis and incorporation of newborn neurons into mature neuronal circuits operates in specialized niches of the mammalian brain and serves as role model for neuronal replacement strategies. However, to which extent can the remaining brain parenchyma, which never incorporates new neurons during the adulthood, be as plastic and readily accommodate neurons in networks that suffered neuronal loss due to injury or neurological disease? Which microenvironment is permissive for neuronal replacement and synaptic integration and which cells perform best? Can lost function be restored and how adequate is the participation in the pre-existing circuitry? Could aberrant connections cause malfunction especially in networks dominated by excitatory neurons, such as the cerebral cortex? These questions show how important connectivity and circuitry aspects are for regenerative medicine, which is the focus of this review. We will discuss the impressive advances in neuronal replacement strategies and success from exogenous as well as endogenous cell sources. Both have seen key novel technologies, like the groundbreaking discovery of induced pluripotent stem cells and direct neuronal reprogramming, offering alternatives to the transplantation of fetal neurons, and both herald great expectations. For these to become reality, neuronal circuitry analysis is key now. As our understanding of neuronal circuits increases, neuronal replacement therapy should fulfill those prerequisites in network structure and function, in brain-wide input and output. Now is the time to incorporate neural circuitry research into regenerative medicine if we ever want to truly repair brain injury.
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Affiliation(s)
- Sofia Grade
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Magdalena Götz
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
- SYNERGY, Excellence Cluster of Systems Neurology, Biomedical Center, Ludwig-Maximilians University Munich, 82152 Planegg-Martinsried, Germany
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39
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Abstract
Although serotonin neurotransmission has been implicated in several neurodevelopmental and psychological disorders, the factors that drive dysfunction of the serotonin system are poorly understood. Current research regarding the serotonin system revolves around its dysfunction in neuropsychiatric disorders, but there is no database collating genetic mutations that result in serotonin abnormalities. To bridge this gap, we developed a list of genes in mice that, when perturbed, result in altered levels of serotonin either in brain or blood. Due to the intrinsic limitations of search, the current list should be considered a preliminary subset of all relevant cases. Nevertheless, it offered an opportunity to gain insight into what types of genes have the potential to impact serotonin by using gene ontology (GO). This analysis found that genes associated with monoamine metabolism were more often associated with increases in brain serotonin than decreases. Speculatively, this could be because several pathways (and therefore many genes) are responsible for the clearance and metabolism of serotonin whereas only one pathway (and therefore fewer genes) is directly involved in the synthesis of serotonin. Another contributor could be cross talk between monoamine systems such as dopamine. In contrast, genes that were associated with decreases in brain serotonin were more likely linked to a developmental process. Sensitivity of serotonin neurons to developmental perturbations could be due to their complicated neuroanatomy or possibly they may be negatively regulated by dysfunction of their innervation targets. Thus, these observations suggest hypotheses regarding the mechanisms underlying the vulnerability of brain serotonin neurotransmission.
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Affiliation(s)
- Richard C. Tenpenny
- Department of Anesthesiology, Perioperative, and Pain
Medicine, Boston Children’s Hospital and Department of Anesthesia,
Harvard Medical School, 300 Longwood
Avenue, Boston, Massachusetts 02115, United States
| | - Kathryn G. Commons
- Department of Anesthesiology, Perioperative, and Pain
Medicine, Boston Children’s Hospital and Department of Anesthesia,
Harvard Medical School, 300 Longwood
Avenue, Boston, Massachusetts 02115, United States
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40
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Grosch J, Winkler J, Kohl Z. Early Degeneration of Both Dopaminergic and Serotonergic Axons - A Common Mechanism in Parkinson's Disease. Front Cell Neurosci 2016; 10:293. [PMID: 28066188 PMCID: PMC5177648 DOI: 10.3389/fncel.2016.00293] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 12/08/2016] [Indexed: 11/13/2022] Open
Abstract
Motor symptoms in Parkinson’s disease (PD) are tightly linked to the degeneration of substantia nigra dopaminergic neurons and their projections into the striatum. Moreover, a broad range of non-motor symptoms like anxiety and depression frequently occur in PD, most likely related to the loss of serotonergic neurons and their projections into corresponding target regions. Strikingly, nigral dopaminergic neurons and raphe serotonergic neurons are severely affected in PD showing characteristic hallmarks of PD neuropathology, in particular alpha-synuclein containing Lewy bodies and Lewy neurites. So far, the initial events underlying neurodegenerative processes in PD are not well understood. Several observations, however, indicate that neurites and synapses of diseased neurons may be the first subcellular compartments compromised by alpha-synuclein associated pathology. In particular axonal pathology and deficits in axonal transport may be leading to the onset of synucleinopathies such as PD. This review will highlight current findings derived from imaging and neuropathological studies in PD patients, as well as cellular and animal PD models, which define the initial underlying structural and molecular events within dopaminergic and serotonergic circuits leading to the ‘dying back’ degeneration of axonal projections in PD.
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Affiliation(s)
- Janina Grosch
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg Erlangen, Germany
| | - Jürgen Winkler
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg Erlangen, Germany
| | - Zacharias Kohl
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg Erlangen, Germany
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41
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Nakano N, Matsuda S, Ichimura M, Minami A, Ogino M, Murai T, Kitagishi Y. PI3K/AKT signaling mediated by G protein-coupled receptors is involved in neurodegenerative Parkinson's disease (Review). Int J Mol Med 2016; 39:253-260. [DOI: 10.3892/ijmm.2016.2833] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/12/2016] [Indexed: 11/05/2022] Open
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42
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Elevated levels of alpha-synuclein blunt cellular signal transduction downstream of Gq protein-coupled receptors. Cell Signal 2016; 30:82-91. [PMID: 27871937 DOI: 10.1016/j.cellsig.2016.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 10/21/2016] [Accepted: 11/17/2016] [Indexed: 01/06/2023]
Abstract
Alpha-synuclein is central to Parkinson's disease pathogenesis and pathology, however its precise functions are still unclear. It has been shown to bind both PLCβ1 and MAPKs, but how this property influences the downstream signaling of Gq protein-coupled receptors has not been elucidated. Here we show that recombinant expression of alpha-synuclein in human neuroblastoma cells enhances cellular levels of PLCβ1 but blunts its signaling pathway, preventing the agonist-dependent rise of cytoplasmic Ca2+. In addition, overexpressing alpha-synuclein abolishes the activation of ERK1/2 upon agonist stimulation, indicating an upstream action in the signal transduction pathway. This data demonstrates that alpha-synuclein, when recombinantly expressed, interferes with the normal signaling of Gq-protein coupled receptors, which are then dysfunctional. Since many neurotransmitter systems utilize these receptor signaling pathways to mediate different abilities affected in Parkinson's disease, we argue this novel perspective might be helpful in designing treatment strategies for some of the non-motor symptoms in Parkinson's disease and synucleinopathies.
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43
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Lepeta K, Lourenco MV, Schweitzer BC, Martino Adami PV, Banerjee P, Catuara-Solarz S, de La Fuente Revenga M, Guillem AM, Haidar M, Ijomone OM, Nadorp B, Qi L, Perera ND, Refsgaard LK, Reid KM, Sabbar M, Sahoo A, Schaefer N, Sheean RK, Suska A, Verma R, Vicidomini C, Wright D, Zhang XD, Seidenbecher C. Synaptopathies: synaptic dysfunction in neurological disorders - A review from students to students. J Neurochem 2016; 138:785-805. [PMID: 27333343 PMCID: PMC5095804 DOI: 10.1111/jnc.13713] [Citation(s) in RCA: 213] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/03/2016] [Accepted: 06/06/2016] [Indexed: 12/12/2022]
Abstract
Synapses are essential components of neurons and allow information to travel coordinately throughout the nervous system to adjust behavior to environmental stimuli and to control body functions, memories, and emotions. Thus, optimal synaptic communication is required for proper brain physiology, and slight perturbations of synapse function can lead to brain disorders. In fact, increasing evidence has demonstrated the relevance of synapse dysfunction as a major determinant of many neurological diseases. This notion has led to the concept of synaptopathies as brain diseases with synapse defects as shared pathogenic features. In this review, which was initiated at the 13th International Society for Neurochemistry Advanced School, we discuss basic concepts of synapse structure and function, and provide a critical view of how aberrant synapse physiology may contribute to neurodevelopmental disorders (autism, Down syndrome, startle disease, and epilepsy) as well as neurodegenerative disorders (Alzheimer and Parkinson disease). We finally discuss the appropriateness and potential implications of gathering synapse diseases under a single term. Understanding common causes and intrinsic differences in disease-associated synaptic dysfunction could offer novel clues toward synapse-based therapeutic intervention for neurological and neuropsychiatric disorders. In this Review, which was initiated at the 13th International Society for Neurochemistry (ISN) Advanced School, we discuss basic concepts of synapse structure and function, and provide a critical view of how aberrant synapse physiology may contribute to neurodevelopmental (autism, Down syndrome, startle disease, and epilepsy) as well as neurodegenerative disorders (Alzheimer's and Parkinson's diseases), gathered together under the term of synaptopathies. Read the Editorial Highlight for this article on page 783.
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Affiliation(s)
- Katarzyna Lepeta
- Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Mychael V Lourenco
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Barbara C Schweitzer
- Department for Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology Magdeburg, Magdeburg, Germany
| | - Pamela V Martino Adami
- Laboratory of Amyloidosis and Neurodegeneration, Fundación Instituto Leloir-IIBBA-CONICET, Buenos Aires, Argentina
| | - Priyanjalee Banerjee
- Department of Biochemistry, Institute of Post Graduate Medical Education & Research, Kolkata, West Bengal, India
| | - Silvina Catuara-Solarz
- Systems Biology Program, Cellular and Systems Neurobiology, Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain
| | - Mario de La Fuente Revenga
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Alain Marc Guillem
- Laboratorio de Neurotoxicología, Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México D.F. 07000, Mexico
| | - Mouna Haidar
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Omamuyovwi M Ijomone
- Department of Human Anatomy, Cross River University of Technology, Okuku Campus, Cross River, Nigeria
| | - Bettina Nadorp
- The Department of Biological Chemistry, The Edmond and Lily Safra Center for Brain Sciences, The Alexander Grass Center for Bioengineering, The Hebrew University of Jerusalem, Israel
| | - Lin Qi
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, United States of America
| | - Nirma D Perera
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Louise K Refsgaard
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Kimberley M Reid
- Department of Pharmacology, UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Mariam Sabbar
- Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Arghyadip Sahoo
- Department of Biochemistry, Midnapore Medical College, West Bengal University of Health Sciences, West Bengal, India
| | - Natascha Schaefer
- Institute for Clinical Neurobiology, Julius-Maximilians-University of Wuerzburg, Wuerzburg, Germany
| | - Rebecca K Sheean
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Anna Suska
- Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Rajkumar Verma
- Department of Neurosciences Uconn Health Center, Farmington, CT, United States of America
| | | | - Dean Wright
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Xing-Ding Zhang
- Department of Lymphoma/Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Constanze Seidenbecher
- Department for Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology Magdeburg, Magdeburg, Germany. .,Center for Behavioral Brain Sciences (CBBS) Magdeburg, Magdeburg, Germany.
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44
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Solanki RR, Scholl JL, Watt MJ, Renner KJ, Forster GL. Amphetamine Withdrawal Differentially Increases the Expression of Organic Cation Transporter 3 and Serotonin Transporter in Limbic Brain Regions. J Exp Neurosci 2016; 10:93-100. [PMID: 27478387 PMCID: PMC4957605 DOI: 10.4137/jen.s40231] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 12/26/2022] Open
Abstract
Amphetamine withdrawal increases anxiety and stress sensitivity related to blunted ventral hippocampus (vHipp) and enhances the central nucleus of the amygdala (CeA) serotonin responses. Extracellular serotonin levels are regulated by the serotonin transporter (SERT) and organic cation transporter 3 (OCT3), and vHipp OCT3 expression is enhanced during 24 hours of amphetamine withdrawal, while SERT expression is unaltered. Here, we tested whether OCT3 and SERT expression in the CeA is also affected during acute withdrawal to explain opposing regional alterations in limbic serotonergic neurotransmission and if respective changes continued with two weeks of withdrawal. We also determined whether changes in transporter expression were confined to these regions. Male rats received amphetamine or saline for two weeks followed by 24 hours or two weeks of withdrawal, with transporter expression measured using Western immunoblot. OCT3 and SERT expression increased in the CeA at both withdrawal timepoints. In the vHipp, OCT3 expression increased only at 24 hours of withdrawal, with an equivalent pattern seen in the dorsomedial hypothalamus. No changes were evident in any other regions sampled. These regionally specific changes in limbic OCT3 and SERT expression may partially contribute to the serotonergic imbalance and negative affect during amphetamine withdrawal.
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Affiliation(s)
- Rajeshwari R. Solanki
- Division of Basic Biomedical Sciences, Sanford School of Medicine, Center for Brain and Behavior Research, University of South Dakota, Vermillion, SD, USA
| | - Jamie L. Scholl
- Division of Basic Biomedical Sciences, Sanford School of Medicine, Center for Brain and Behavior Research, University of South Dakota, Vermillion, SD, USA
| | - Michael J. Watt
- Division of Basic Biomedical Sciences, Sanford School of Medicine, Center for Brain and Behavior Research, University of South Dakota, Vermillion, SD, USA
| | - Kenneth J. Renner
- Biology Department, Center for Brain and Behavior Research, University of South Dakota, Vermillion, SD, USA
| | - Gina L. Forster
- Division of Basic Biomedical Sciences, Sanford School of Medicine, Center for Brain and Behavior Research, University of South Dakota, Vermillion, SD, USA
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45
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Marxreiter F, Storch A, Winkler J. [Cellular replacement strategies and adult neurogenesis in idiopathic Parkinson's disease]. DER NERVENARZT 2016; 87:805-13. [PMID: 27389601 DOI: 10.1007/s00115-016-0157-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Parkinson's disease (PD) is the most common age-related movement disorder and characterized by slowly progressive neurodegeneration resulting in motor symptoms, such as bradykinesia, rigidity, tremor and postural instability. Moreover, non-motor symptoms, such as hyposmia, anxiety and depression reduce the quality of life in PD. Motor symptoms are associated with a distinct striatal dopaminergic deficit resulting from axonal dysfunction and neuronal loss in the substantia nigra (SN). Recent progress in stem cell technology allows the optimization of cellular transplantation strategies in order to alleviate the motor deficit, which potentially leads to a reactivation of this therapeutic strategy. Besides neurodegenerative processes impaired adult neurogenesis and consequentially reduced endogenous cellular plasticity may play an important role in PD. This article discusses the notion that non-motor symptoms in PD may partly be explained by reduced adult neurogenesis in the olfactory bulb and hippocampus.
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Affiliation(s)
- F Marxreiter
- Abteilung für Molekulare Neurologie, Universitätsklinikum Erlangen, Schwabachanlage 6, 91054, Erlangen, Deutschland
| | - A Storch
- Klinik und Poliklinik für Neurologie, Universität Rostock, Gehlsheimer Straße 20, 18147, Rostock, Deutschland.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock, Gehlsheimer Straße 20, 18147, Rostock, Deutschland
| | - J Winkler
- Abteilung für Molekulare Neurologie, Universitätsklinikum Erlangen, Schwabachanlage 6, 91054, Erlangen, Deutschland.
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46
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Infiltrating T lymphocytes reduce myeloid phagocytosis activity in synucleinopathy model. J Neuroinflammation 2016; 13:174. [PMID: 27364890 PMCID: PMC4929755 DOI: 10.1186/s12974-016-0632-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 06/20/2016] [Indexed: 01/25/2023] Open
Abstract
Background Synucleinopathies comprise a group of neurodegenerative diseases associated with abnormal accumulation of α-synuclein. One of the key factors that contribute to the progression of synucleinopathies is neuroinflammation. However, the role of lymphocytes in synucleinopathies like Parkinson’s disease (PD) remains largely unclear. Methods To investigate how lymphocytes impact synucleinopathies, human wild-type α-synuclein (WTS) transgenic mice were crossed with mice lacking mature lymphocytes (Rag2−/−). In this in vivo model, we quantified α-synuclein aggregation in the substantia nigra (SN) and striatum and determined the numbers of innate and adaptive immune cells in the central nervous system (CNS). The activation state of resident and infiltrated CNS myeloid cells (M1 vs. M2) was further classified by gene and protein expression analyses. The impact of T and B lymphocytes on the phagocytic activity of microglia in the presence of α-synuclein aggregates was addressed in BV2 microglia in vitro. Results Compared to WTS+ Rag2+/+ mice, where T but not B lymphocytes infiltrated the CNS, decreased amounts of α-synuclein aggregates were found in WTS+ Rag2−/− mice devoid of mature lymphocytes. The presence of T lymphocytes did not alter the number of Iba1+ microglia but increased the frequency of the CD11b+ CD45hi population in the CNS, indicative of an increased number of infiltrated macrophages. Moreover, the M1 phenotype was more prominent in WTS+ Rag2+/+ mice, whereas the M2 activation state was dominating in the absence of lymphocytes in WTS+ Rag2−/− mice. In vitro, in the presence of T but not B lymphocytes, significantly less α-synuclein was phagocytosed by BV2 microglia, further supporting the prevalence of the M1 phenotype in the presence of T lymphocytes. Conclusions Peripheral T lymphocytes strongly contribute to increased α-synuclein pathology via modulation of CNS myeloid cell function. In the presence of T lymphocytes, microglia phagocytosis of aggregated α-synuclein is reduced, which increases the severity of synucleinopathy. Electronic supplementary material The online version of this article (doi:10.1186/s12974-016-0632-5) contains supplementary material, which is available to authorized users.
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47
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Leal PC, Lins LCRF, de Gois AM, Marchioro M, Santos JR. Commentary: Evaluation of Models of Parkinson's Disease. Front Neurosci 2016; 10:283. [PMID: 27444376 PMCID: PMC4914559 DOI: 10.3389/fnins.2016.00283] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 06/07/2016] [Indexed: 02/03/2023] Open
Affiliation(s)
- Pollyana C Leal
- Department of Physiology, Federal University of Sergipe São Cristóvão, Brazil
| | - Lívia C R F Lins
- Department of Physiology, Federal University of Sergipe São Cristóvão, Brazil
| | - Auderlan M de Gois
- Department of Physiology, Federal University of Sergipe São Cristóvão, Brazil
| | - Murilo Marchioro
- Department of Physiology, Federal University of Sergipe São Cristóvão, Brazil
| | - José R Santos
- Behavioral and Evolutionary Neurobiology Laboratory, Department of Biosciences, Federal University of Sergipe Itabaiana, Brazil
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48
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Beart PM. Synaptic signalling and its interface with neuropathologies: snapshots from the past, present and future. J Neurochem 2016; 139 Suppl 2:76-90. [PMID: 27144305 DOI: 10.1111/jnc.13598] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/09/2016] [Accepted: 02/26/2016] [Indexed: 11/30/2022]
Abstract
This 'Past to Future' Review as part of the 60th anniversary year of the Journal of Neurochemistry focuses on synaptic transmission and associated signalling, and seeks to identify seminal progress in neurochemistry over the last 10 years which has advanced our understanding of neuronal communication in brain. The approach adopted analyses neurotransmitters on a case by case basis (i.e. amino acids, monoamines, acetylcholine, neuropeptides, ATP/purines and gasotransmitters) to highlight novel findings that have changed the way we view each type of transmitter, to explore commonalities and interactions, and to note how new insights have changed the way we view the biology of degenerative, psychiatric and behavioural conditions. Across all transmitter systems there was remarkable growth in the identification of targets likely to provide therapeutic benefit and which undoubtedly was driven by the elucidation of circuit function and new vistas of synaptic signalling. There has been an increasing trend to relate signalling to disease, notably for Alzheimer's and Parkinson's disease and related conditions, and which has occurred for each transmitter family. Forebrain circuitry and tonic excitatory control have been the centre of great attention yielding novel findings that will impact upon cognitive, emotional and addictive behaviours. Other impressive insights focus on gasotransmitters integrating activity as volume transmitters. Exciting developments in how serotonin, cholinergic, l-glutamate, galanin and adenosine receptors and their associated signalling can be beneficially targeted should underpin the development of new therapies. Clearly integrated, multifaceted neurochemistry has changed the way we view synaptic signalling and its relevance to pathobiology. Highlighted are important advances in synaptic signalling over the last decade in the Journal of Neurochemistry. Across all transmitter systems elucidation of circuit function, and notably molecular insights, have underpinned remarkable growth in the identification of targets likely to provide therapeutic benefit in neuropathologies. Another commonality was wide interest in forebrain circuitry and its tonic excitatory control. Increasingly observations relate to signalling in disease and behavioural conditions. This article is part of the 60th Anniversary special issue.
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Affiliation(s)
- Philip M Beart
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Victoria, Australia.
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49
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Liguori C, Pierantozzi M, Olivola E, Mercuri NB, Stefani A. Commentary: Clinical Correlates of Raphe Serotonergic Dysfunction in Early Parkinson's Disease. Front Neurol 2015; 6:261. [PMID: 26733935 PMCID: PMC4685319 DOI: 10.3389/fneur.2015.00261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 11/26/2015] [Indexed: 12/31/2022] Open
Affiliation(s)
- Claudio Liguori
- Neurophysiopathology Unit, Department of Systems Medicine, University of Rome "Tor Vergata" , Rome , Italy
| | - Mariangela Pierantozzi
- Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata , Rome , Italy
| | - Enrica Olivola
- Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata , Rome , Italy
| | - Nicola B Mercuri
- Neurophysiopathology Unit, Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy; Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Alessandro Stefani
- Department of Systems Medicine, Movement Disorders Centre, Fondazione Policlinico Tor Vergata, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy
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50
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Kohl Z, Ben Abdallah N, Vogelgsang J, Tischer L, Deusser J, Amato D, Anderson S, Müller CP, Riess O, Masliah E, Nuber S, Winkler J. Severely impaired hippocampal neurogenesis associates with an early serotonergic deficit in a BAC α-synuclein transgenic rat model of Parkinson's disease. Neurobiol Dis 2015; 85:206-217. [PMID: 26523794 DOI: 10.1016/j.nbd.2015.10.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/20/2015] [Accepted: 10/27/2015] [Indexed: 12/24/2022] Open
Abstract
Parkinson's disease (PD) is a multisystem disorder, involving several monoaminergic neurotransmitter systems resulting in a broad range of motor and non-motor symptoms. Pathological hallmarks of PD are the loss of dopaminergic neurons and the accumulation of alpha-synuclein, however also being present in the serotonergic raphe nuclei early in the disease course. The dysfunction of the serotonergic system projecting to the hippocampus may contribute to early non-motor symptoms such as anxiety and depression. The adult hippocampal dentate gyrus (DG), a unique niche of the forebrain continuously generating new neurons, may particularly present enhanced susceptibility towards accumulating alpha-synuclein levels. The underlying molecular mechanisms in the context of neuronal maturation and survival of new-born neurons are yet not well understood. To characterize the effects of overexpression of human full-length alpha-synuclein on hippocampal cellular and synaptic plasticity, we used a recently generated BAC alpha-synuclein transgenic rat model showing important features of PD such as widespread and progressive alpha-synuclein aggregation pathology, dopamine loss and age-dependent motor decline. At the age of four months, thus prior to the occurrence of the motor phenotype, we observed a profoundly impaired dendritogenesis of neuroblasts in the hippocampal DG resulting in severely reduced survival of adult new-born neurons. Diminished neurogenesis concurred with a serotonergic deficit in the hippocampus as defined by reduced levels of serotonin (5-HT) 1B receptor, decreased 5-HT neurotransmitter levels, and a loss of serotonergic nerve terminals innervating the DG/CA3 subfield, while the number of serotonergic neurons in the raphe nuclei remained unchanged. Moreover, alpha-synuclein overexpression reduced proteins involved in vesicle release, in particular synapsin-1 and Rab3 interacting molecule (RIM3), in conjunction with an altered ultrastructural architecture of hippocampal synapses. Importantly, BAC alpha-synuclein rats showed an early anxiety-like phenotype consisting of reduced exploratory behavior and feeding. Taken together, these findings imply that accumulating alpha-synuclein severely affects hippocampal neurogenesis paralleled by impaired 5-HT neurotransmission prior to the onset of aggregation pathology and overt motor deficits in this transgenic rat model of PD.
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Affiliation(s)
- Zacharias Kohl
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Nada Ben Abdallah
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Jonathan Vogelgsang
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Lucas Tischer
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Janina Deusser
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Davide Amato
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Scott Anderson
- Department of Neurosciences and Pathology, University of California, San Diego, La Jolla, USA
| | - Christian P Müller
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Eliezer Masliah
- Department of Neurosciences and Pathology, University of California, San Diego, La Jolla, USA
| | - Silke Nuber
- Department of Neurosciences and Pathology, University of California, San Diego, La Jolla, USA; Department of Psychiatry, University of California, San Diego, La Jolla, USA; Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany.
| | - Jürgen Winkler
- Department of Molecular Neurology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.
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