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Wada H, Hikiami R, Kusui M, Minamiyama S, Asada-Utsugi M, Shodai A, Muramatsu SI, Morimura T, Urushitani M. In vivo analysis of aggregation propensity of low levels of mislocalized TDP-43 on cytopathological and behavioral phenotype of ALS/FTLD. Neurosci Res 2023:S0168-0102(23)00040-8. [PMID: 36804599 DOI: 10.1016/j.neures.2023.02.006] [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: 11/30/2022] [Revised: 01/26/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023]
Abstract
Mislocalization and aggregate formation of TAR DNA-biding protein of 43kD (TDP-43) in the cytoplasm are signatures of amyotrophic lateral sclerosis(ALS) and frontotemporal lobar degeneration (FTLD). However, the role of two cytopathologies in ALS/FTLD pathogenesis is unclear. This study aims to elucidate the difference in their causality of TDP-43 in ALS/FTLD in vivo, using transgenic mice expressing human TDP-43 with defective nuclear localizing signals in neurons (Cyto-TDP) and those with aggregation propensity (Cyto-aggTDP). The expression levels of both proteins are less than half of endogenous TDP-43. Despite the low amount of Cyto-aggTDP, the TDP-43 phosphorylation is more evident than Cyto-TDP. Histopathological study showed accelerated astrogliosis in the anterior cerebral cortex of both mice. Cyto-aggTDP mice demonstrated significant but faint loss of neurons in the perirhinal(PERI) and ectorhinal(ECT) areas and higher Iba1-staining in the spinal cord than aged control. Despite the lack of locomotor dysfunctions in both mice, the open-field test showed enhanced exploratory behavior, indicating that the perpetual mislocalization of TDP-43 may suffice to trigger FTLD behavior. Besides, the aggregation propensity of TDP-43 promotes phosphorylation, but its role in the clinicopathological phenotype may not be primary.
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Affiliation(s)
- Hideki Wada
- Department of Neurology, Shiga University of Medical Science, Japan; Molecular Neuroscience Research Center, Shiga University of Medical Science, Japan
| | - Ryota Hikiami
- Department of Therapeutics for Protein Misfolding Diseases, Shiga University of Medical Science, Japan.
| | - Makiko Kusui
- Department of Neurology, Shiga University of Medical Science, Japan
| | - Sumio Minamiyama
- Department of Neurology, Shiga University of Medical Science, Japan; Department of Neurology, Kyoto City Hospital, Japan
| | - Megumi Asada-Utsugi
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Japan
| | - Akemi Shodai
- Department of Neurology, Shiga University of Medical Science, Japan
| | - Shin-Ichi Muramatsu
- Division of Neurological Gene Therapy, Center for Open Innovation, Jichi Medical University, Japan
| | - Toshifumi Morimura
- Research Center for Animal Life Science, Shiga University of Medical Science, Japan
| | - Makoto Urushitani
- Department of Neurology, Shiga University of Medical Science, Japan; Molecular Neuroscience Research Center, Shiga University of Medical Science, Japan; Department of Therapeutics for Protein Misfolding Diseases, Shiga University of Medical Science, Japan.
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Hu Z, Ondrejcak T, Yu P, Zhang Y, Yang Y, Klyubin I, Kennelly SP, Rowan MJ, Hu NW. Do tau-synaptic long-term depression interactions in the hippocampus play a pivotal role in the progression of Alzheimer's disease? Neural Regen Res 2022; 18:1213-1219. [PMID: 36453396 PMCID: PMC9838152 DOI: 10.4103/1673-5374.360166] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Cognitive decline in Alzheimer's disease correlates with the extent of tau pathology, in particular tau hyperphosphorylation that initially appears in the transentorhinal and related regions of the brain including the hippocampus. Recent evidence indicates that tau hyperphosphorylation caused by either amyloid-β or long-term depression, a form of synaptic weakening involved in learning and memory, share similar mechanisms. Studies from our group and others demonstrate that long-term depression-inducing low-frequency stimulation triggers tau phosphorylation at different residues in the hippocampus under different experimental conditions including aging. Conversely, certain forms of long-term depression at hippocampal glutamatergic synapses require endogenous tau, in particular, phosphorylation at residue Ser396. Elucidating the exact mechanisms of interaction between tau and long-term depression may help our understanding of the physiological and pathological functions of tau/tau (hyper)phosphorylation. We first summarize experimental evidence regarding tau-long-term depression interactions, followed by a discussion of possible mechanisms by which this interplay may influence the pathogenesis of Alzheimer's disease. Finally, we conclude with some thoughts and perspectives on future research about these interactions.
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Affiliation(s)
- Zhengtao Hu
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China,Department of Gerontology, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui Province, China
| | - Tomas Ondrejcak
- Department of Pharmacology & Therapeutics and Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Pengpeng Yu
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yangyang Zhang
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yin Yang
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China,Department of Pharmacology & Therapeutics and Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Igor Klyubin
- Department of Pharmacology & Therapeutics and Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Sean P. Kennelly
- Department of Age-Related Healthcare, Tallaght University Hospital, Dublin, Ireland,Department of Medical Gerontology, Trinity College, Dublin, Ireland
| | - Michael J. Rowan
- Department of Pharmacology & Therapeutics and Institute of Neuroscience, Trinity College, Dublin, Ireland
| | - Neng-Wei Hu
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, China,Department of Pharmacology & Therapeutics and Institute of Neuroscience, Trinity College, Dublin, Ireland,Correspondence to: Neng-Wei Hu, .
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Papanikolaou A, Rodrigues FR, Holeniewska J, Phillips KG, Saleem AB, Solomon SG. Plasticity in visual cortex is disrupted in a mouse model of tauopathy. Commun Biol 2022; 5:77. [PMID: 35058544 PMCID: PMC8776781 DOI: 10.1038/s42003-022-03012-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 12/27/2021] [Indexed: 12/25/2022] Open
Abstract
Alzheimer's disease and other dementias are thought to underlie a progressive impairment of neural plasticity. Previous work in mouse models of Alzheimer's disease shows pronounced changes in artificially-induced plasticity in hippocampus, perirhinal and prefrontal cortex. However, it is not known how degeneration disrupts intrinsic forms of brain plasticity. Here we characterised the impact of tauopathy on a simple form of intrinsic plasticity in the visual system, which allowed us to track plasticity at both long (days) and short (minutes) timescales. We studied rTg4510 transgenic mice at early stages of tauopathy (5 months) and a more advanced stage (8 months). We recorded local field potentials in the primary visual cortex while animals were repeatedly exposed to a stimulus over 9 days. We found that both short- and long-term visual plasticity were already disrupted at early stages of tauopathy, and further reduced in older animals, such that it was abolished in mice expressing mutant tau. Additionally, visually evoked behaviours were disrupted in both younger and older mice expressing mutant tau. Our results show that visual cortical plasticity and visually evoked behaviours are disrupted in the rTg4510 model of tauopathy. This simple measure of plasticity may help understand how tauopathy disrupts neural circuits, and offers a translatable platform for detection and tracking of the disease.
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Affiliation(s)
- Amalia Papanikolaou
- UCL Institute of Behavioural Neuroscience, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK.
| | - Fabio R Rodrigues
- UCL Institute of Behavioural Neuroscience, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK
| | - Joanna Holeniewska
- UCL Institute of Behavioural Neuroscience, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK
| | - Keith G Phillips
- Eli Lilly, Research and Development, Erl Wood, Surrey, GU20 6PH, UK
| | - Aman B Saleem
- UCL Institute of Behavioural Neuroscience, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK
| | - Samuel G Solomon
- UCL Institute of Behavioural Neuroscience, Department of Experimental Psychology, University College London, London, WC1H 0AP, UK
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Cieślik P, Siekierzycka A, Radulska A, Płoska A, Burnat G, Brański P, Kalinowski L, Wierońska JM. Nitric Oxide-Dependent Mechanisms Underlying MK-801- or Scopolamine-Induced Memory Dysfunction in Animals: Mechanistic Studies. Int J Mol Sci 2021; 22:ijms222212282. [PMID: 34830164 PMCID: PMC8624219 DOI: 10.3390/ijms222212282] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/14/2022] Open
Abstract
MK-801, an NMDA receptor antagonist, and scopolamine, a cholinergic receptor blocker, are widely used as tool compounds to induce learning and memory deficits in animal models to study schizophrenia or Alzheimer-type dementia (AD), respectively. Memory impairments are observed after either acute or chronic administration of either compound. The present experiments were performed to study the nitric oxide (NO)-related mechanisms underlying memory dysfunction induced by acute or chronic (14 days) administration of MK-801 (0.3 mg/kg, i.p.) or scopolamine (1 mg/kg, i.p.). The levels of L-arginine and its derivatives, L-citrulline, L-glutamate, L-glutamine and L-ornithine, were measured. The expression of constitutive nitric oxide synthases (cNOS), dimethylaminohydrolase (DDAH1) and protein arginine N-methyltransferases (PMRTs) 1 and 5 was evaluated, and the impact of the studied tool compounds on cGMP production and NMDA receptors was measured. The studies were performed in both the cortex and hippocampus of mice. S-nitrosylation of selected proteins, such as GLT-1, APP and tau, was also investigated. Our results indicate that the availability of L-arginine decreased after chronic administration of MK-801 or scopolamine, as both the amino acid itself as well as its level in proportion to its derivatives (SDMA and NMMA) were decreased. Additionally, among all three methylamines, SDMA was the most abundant in the brain (~70%). Administration of either compound impaired eNOS-derived NO production, increasing the monomer levels, and had no significant impact on nNOS. Both compounds elevated DDAH1 expression, and slight decreases in PMRT1 and PMRT5 in the cortex after scopolamine (acute) and MK-801 (chronic) administration were observed in the PFC, respectively. Administration of MK-801 induced a decrease in the cGMP level in the hippocampus, accompanied by decreased NMDA expression, while increased cGMP production and decreased NMDA receptor expression were observed after scopolamine administration. Chronic MK-801 and scopolamine administration affected S-nitrosylation of GLT-1 transport protein. Our results indicate that the analyzed tool compounds used in pharmacological models of schizophrenia or AD induce changes in NO-related pathways in the brain structures involved in cognition. To some extent, the changes resemble those observed in human samples.
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Affiliation(s)
- Paulina Cieślik
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343 Kraków, Poland; (P.C.); (A.S.); (G.B.); (P.B.)
| | - Anna Siekierzycka
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343 Kraków, Poland; (P.C.); (A.S.); (G.B.); (P.B.)
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland; (A.R.); (A.P.)
| | - Adrianna Radulska
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland; (A.R.); (A.P.)
- Biobanking and Biomoleclular Resources Research Infrastructure Consortium Poland (BBMRI.pl), 7 Dębinki Street, 80-211 Gdańsk, Poland
| | - Agata Płoska
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland; (A.R.); (A.P.)
- Biobanking and Biomoleclular Resources Research Infrastructure Consortium Poland (BBMRI.pl), 7 Dębinki Street, 80-211 Gdańsk, Poland
| | - Grzegorz Burnat
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343 Kraków, Poland; (P.C.); (A.S.); (G.B.); (P.B.)
| | - Piotr Brański
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343 Kraków, Poland; (P.C.); (A.S.); (G.B.); (P.B.)
| | - Leszek Kalinowski
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland; (A.R.); (A.P.)
- Biobanking and Biomoleclular Resources Research Infrastructure Consortium Poland (BBMRI.pl), 7 Dębinki Street, 80-211 Gdańsk, Poland
- BioTechMed Centre, Department of Mechanics of Materials and Structures, University of Technology, 11/12 Narutowicza, 80-233 Gdańsk, Poland
- Correspondence: (L.K.); (J.M.W.); Tel.: +48-58-349-27-91 (L.K.); +48-12-662-32-88 (J.M.W.)
| | - Joanna M. Wierońska
- Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna Street, 31-343 Kraków, Poland; (P.C.); (A.S.); (G.B.); (P.B.)
- Correspondence: (L.K.); (J.M.W.); Tel.: +48-58-349-27-91 (L.K.); +48-12-662-32-88 (J.M.W.)
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Insights into the Pathophysiology of Psychiatric Symptoms in Central Nervous System Disorders: Implications for Early and Differential Diagnosis. Int J Mol Sci 2021; 22:ijms22094440. [PMID: 33922780 PMCID: PMC8123079 DOI: 10.3390/ijms22094440] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 12/12/2022] Open
Abstract
Different psychopathological manifestations, such as affective, psychotic, obsessive-compulsive symptoms, and impulse control disturbances, may occur in most central nervous system (CNS) disorders including neurodegenerative and neuroinflammatory diseases. Psychiatric symptoms often represent the clinical onset of such disorders, thus potentially leading to misdiagnosis, delay in treatment, and a worse outcome. In this review, psychiatric symptoms observed along the course of several neurological diseases, namely Alzheimer’s disease, fronto-temporal dementia, Parkinson’s disease, Huntington’s disease, and multiple sclerosis, are discussed, as well as the involved brain circuits and molecular/synaptic alterations. Special attention has been paid to the emerging role of fluid biomarkers in early detection of these neurodegenerative diseases. The frequent occurrence of psychiatric symptoms in neurological diseases, even as the first clinical manifestations, should prompt neurologists and psychiatrists to share a common clinico-biological background and a coordinated diagnostic approach.
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