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Sotoyama H. Putative neural mechanisms underlying release-mode-specific abnormalities in dopamine neural activity in a schizophrenia-like model: The distinct roles of glutamate and serotonin in the impaired regulation of dopamine neurons. Eur J Neurosci 2024; 59:1194-1212. [PMID: 37611917 DOI: 10.1111/ejn.16123] [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: 05/18/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/25/2023]
Abstract
Abnormalities in dopamine function might be related to psychiatric disorders such as schizophrenia. Even at the same concentration, dopamine exerts opposite effects on information processing in the prefrontal cortex depending on independent dopamine release modes known as tonic and phasic releases. This duality of dopamine prevents a blanket interpretation of the implications of dopamine abnormalities for diseases on the basis of absolute dopamine levels. Moreover, the mechanisms underlying the mode-specific dopamine abnormalities are not clearly understood. Here, I show that the two modes of dopamine release in the prefrontal cortex of a schizophrenia-like model are disrupted by different mechanisms. In the schizophrenia-like model established by perinatal exposure to inflammatory cytokine, epidermal growth factor, tonic release was enhanced and phasic release was decreased in the prefrontal cortex. I examined the activity of dopamine neurons in the ventral tegmental area (VTA), which sends dopamine projections to the prefrontal cortex, under anaesthesia. The activation of VTA dopamine neurons during excitatory stimulation (local application of glutamate or N-methyl-d-aspartic acid [NMDA]), which is associated with phasic activity, was blunt in this model. Dopaminergic neuronal activity in the resting state related to tonic release was increased by disinhibition of the dopamine neurons due to the impairment of 5HT2 (5HT2A) receptor-regulated GABAergic inputs. Moreover, chronic administration of risperidone ameliorated this disinhibition of dopaminergic neurons. These results provide an idea about the mechanism of dopamine disturbance in schizophrenia and may be informative in explaining the effects of atypical antipsychotics as distinct from those of typical drugs.
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Affiliation(s)
- Hidekazu Sotoyama
- Department of Physiology, School of Medicine, Niigata University, Niigata, Japan
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
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2
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Sotoyama H, Namba H, Tohmi M, Nawa H. Schizophrenia Animal Modeling with Epidermal Growth Factor and Its Homologs: Their Connections to the Inflammatory Pathway and the Dopamine System. Biomolecules 2023; 13:biom13020372. [PMID: 36830741 PMCID: PMC9953688 DOI: 10.3390/biom13020372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/10/2023] [Accepted: 02/12/2023] [Indexed: 02/18/2023] Open
Abstract
Epidermal growth factor (EGF) and its homologs, such as neuregulins, bind to ErbB (Her) receptor kinases and regulate glial differentiation and dopaminergic/GABAergic maturation in the brain and are therefore implicated in schizophrenia neuropathology involving these cell abnormalities. In this review, we summarize the biological activities of the EGF family and its neuropathologic association with schizophrenia, mainly overviewing our previous model studies and the related articles. Transgenic mice as well as the rat/monkey models established by perinatal challenges of EGF or its homologs consistently exhibit various behavioral endophenotypes relevant to schizophrenia. In particular, post-pubertal elevation in baseline dopaminergic activity may illustrate the abnormal behaviors relevant to positive and negative symptoms as well as to the timing of this behavioral onset. With the given molecular interaction and transactivation of ErbB receptor kinases with Toll-like receptors (TLRs), EGF/ErbB signals are recruited by viral infection and inflammatory diseases such as COVID-19-mediated pneumonia and poxvirus-mediated fibroma and implicated in the immune-inflammatory hypothesis of schizophrenia. Finally, we also discuss the interaction of clozapine with ErbB receptor kinases as well as new antipsychotic development targeting these receptors.
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Affiliation(s)
- Hidekazu Sotoyama
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Physiology, School of Medicine, Niigata University, Niigata 951-8122, Japan
- Correspondence: (H.N.); (H.S.)
| | - Hisaaki Namba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama 649-8156, Japan
| | - Manavu Tohmi
- Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama 649-8156, Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama 649-8156, Japan
- Correspondence: (H.N.); (H.S.)
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3
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Mastrogiacomo R, Trigilio G, Devroye C, Dautan D, Ferretti V, Losi G, Caffino L, Orso G, Marotta R, Maltese F, Vitali E, Piras G, Forgiarini A, Pacinelli G, Lia A, Rothmond DA, Waddington JL, Drago F, Fumagalli F, Luca MAD, Leggio GM, Carmignoto G, Weickert CS, Managò F, Papaleo F. Dysbindin-1A modulation of astrocytic dopamine and basal ganglia dependent behaviors relevant to schizophrenia. Mol Psychiatry 2022; 27:4201-4217. [PMID: 35821415 DOI: 10.1038/s41380-022-01683-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 02/07/2023]
Abstract
The mechanisms underlying the dichotomic cortical/basal ganglia dopaminergic abnormalities in schizophrenia are unclear. Astrocytes are important non-neuronal modulators of brain circuits, but their role in dopaminergic system remains poorly explored. Microarray analyses, immunohistochemistry, and two-photon laser scanning microscopy revealed that Dys1 hypofunction increases the reactivity of astrocytes, which express only the Dys1A isoform. Notably, behavioral and electrochemical assessments in mice selectively lacking the Dys1A isoform unraveled a more prominent impact of Dys1A in behavioral and dopaminergic/D2 alterations related to basal ganglia, but not cortical functioning. Ex vivo electron microscopy and protein expression analyses indicated that selective Dys1A disruption might alter intracellular trafficking in astrocytes, but not in neurons. In agreement, Dys1A disruption only in astrocytes resulted in decreased motivation and sensorimotor gating deficits, increased astrocytic dopamine D2 receptors and decreased dopaminergic tone within basal ganglia. These processes might have clinical relevance because the caudate, but not the cortex, of patients with schizophrenia shows a reduction of the Dys1A isoform. Therefore, we started to show a hitherto unknown role for the Dys1A isoform in astrocytic-related modulation of basal ganglia behavioral and dopaminergic phenotypes, with relevance to schizophrenia.
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Affiliation(s)
- Rosa Mastrogiacomo
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Gabriella Trigilio
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy.,Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Céline Devroye
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Daniel Dautan
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy.,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Valentina Ferretti
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Gabriele Losi
- Neuroscience Institute, CNR, Padova, Italy.,Department of Biomedical Science, University of Padova, Padova, Italy
| | - Lucia Caffino
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Genny Orso
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Roberto Marotta
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Federica Maltese
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Enrica Vitali
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Gessica Piras
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Alessia Forgiarini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Giada Pacinelli
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy
| | - Annamaria Lia
- Neuroscience Institute, CNR, Padova, Italy.,Department of Biomedical Science, University of Padova, Padova, Italy
| | - Debora A Rothmond
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, NSW, Australia
| | - John L Waddington
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Filippo Drago
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Fabio Fumagalli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | | | - Gian Marco Leggio
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giorgio Carmignoto
- Neuroscience Institute, CNR, Padova, Italy.,Department of Biomedical Science, University of Padova, Padova, Italy
| | - Cynthia S Weickert
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, NSW, Australia
| | - Francesca Managò
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy.
| | - Francesco Papaleo
- Genetics of Cognition laboratory, Neuroscience area, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy. .,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy.
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Increased self-triggered vocalizations in an epidermal growth factor-induced rat model for schizophrenia. Sci Rep 2022; 12:12917. [PMID: 35902695 PMCID: PMC9334381 DOI: 10.1038/s41598-022-17174-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/21/2022] [Indexed: 11/21/2022] Open
Abstract
Rats elicit two types of ultrasonic vocalizations (USVs), positive (30–80 kHz; high pitch) and negative (10–30 kHz; low pitch) voices. As patients with schizophrenia often exhibit soliloquy-like symptoms, we explored whether an animal model for schizophrenia is similarly characterized by such self-triggered vocalizations. We prepared the animal model by administering an inflammatory cytokine, epidermal growth factor (EGF), to rat neonates, which later develop behavioral and electroencephalographic deficits relevant to schizophrenia. EGF model rats and controls at young (8–10 weeks old) and mature (12–14 weeks old) adult stages were subjected to acclimation, female pairing, and vocalization sessions. In acclimation sessions, low pitch USVs at the mature adult stage were more frequent in EGF model rats than in controls. In the vocalization session, the occurrences of low pitch self-triggered USVs were higher in EGF model rats in both age groups, although this group difference was eliminated by their risperidone treatment. Unlike conventional negative USVs of rats, however, the present low pitch self-triggered USVs had short durations of 10–30 ms. These results suggest the potential that self-triggered vocalization might serve as a translatable pathological trait of schizophrenia to animal models.
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Sotoyama H, Inaba H, Iwakura Y, Namba H, Takei N, Sasaoka T, Nawa H. The dual role of dopamine in the modulation of information processing in the prefrontal cortex underlying social behavior. FASEB J 2022; 36:e22160. [DOI: 10.1096/fj.202101637r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/12/2021] [Accepted: 12/29/2021] [Indexed: 01/08/2023]
Affiliation(s)
- Hidekazu Sotoyama
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
| | - Hiroyoshi Inaba
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
| | - Yuriko Iwakura
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
- Department of Brain Tumor Biology Brain Research Institute, Niigata University Niigata Japan
| | - Hisaaki Namba
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
- Department of Physiological Sciences, School of Pharmaceutical Sciences Wakayama Medical University Wakayama Japan
| | - Nobuyuki Takei
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
- Department of Brain Tumor Biology Brain Research Institute, Niigata University Niigata Japan
| | - Toshikuni Sasaoka
- Department of Comparative & Experimental Medicine Brain Research Institute, Niigata University Niigata Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology Brain Research Institute, Niigata University Niigata Japan
- Department of Physiological Sciences, School of Pharmaceutical Sciences Wakayama Medical University Wakayama Japan
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Narihara I, Kitajo K, Namba H, Sotoyama H, Inaba H, Watanabe D, Nawa H. Rat call-evoked electrocorticographic responses and intercortical phase synchrony impaired in a cytokine-induced animal model for schizophrenia. Neurosci Res 2021; 175:62-72. [PMID: 34699860 DOI: 10.1016/j.neures.2021.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 10/19/2021] [Indexed: 11/18/2022]
Abstract
Patients with schizophrenia exhibit impaired performance in tone-matching or voice discrimination tests. However, there is no animal model recapitulating these pathophysiological traits. Here, we tested the representation of auditory recognition deficits in an animal model of schizophrenia. We established a rat model for schizophrenia using a perinatal challenge of epidermal growth factor (EGF), exposed adult rats to 55 kHz sine tones, rat calls (50-60 kHz), or reversely played calls, analyzed electrocorticography (ECoG) of the auditory and frontal cortices. Grand averages of event-related responses (ERPs) in the auditory cortex showed between-group size differences in the P1 component, whereas the P2 component differed among sound stimulus types. In EGF model rats, gamma band amplitudes were decreased in the auditory cortex and were enhanced in the frontal cortex with sine stimulus. The model rats also exhibited a reduction in rat call-triggered intercortical phase synchrony in the beta range. Risperidone administration restored normal phase synchrony. These findings suggest that perinatal exposure to the cytokine impairs tone/call recognition processes in these neocortices. In conjunction with previous studies using this model, our findings indicate that perturbations in ErbB/EGF signaling during development exert a multiscale impact on auditory functions at the cellular, circuit, and cognitive levels.
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Affiliation(s)
- Itaru Narihara
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan; Department of Biological Sciences, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Keiichi Kitajo
- Division of Neural Dynamics, Department of System Neuroscience, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, 444-8585, Japan; Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, 444-8585, Japan
| | - Hisaaki Namba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan; Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, 640-8156, Japan
| | - Hidekazu Sotoyama
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Hiroyoshi Inaba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Dai Watanabe
- Department of Biological Sciences, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan; Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, 640-8156, Japan.
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Sotoyama H, Namba H, Kobayashi Y, Hasegawa T, Watanabe D, Nakatsukasa E, Sakimura K, Furuyashiki T, Nawa H. Resting-state dopaminergic cell firing in the ventral tegmental area negatively regulates affiliative social interactions in a developmental animal model of schizophrenia. Transl Psychiatry 2021; 11:236. [PMID: 33888687 PMCID: PMC8062445 DOI: 10.1038/s41398-021-01346-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/22/2021] [Accepted: 04/01/2021] [Indexed: 12/19/2022] Open
Abstract
Hyperdopaminergic activities are often linked to positive symptoms of schizophrenia, but their neuropathological implications on negative symptoms are rather controversial among reports. Here, we explored the regulatory role of the resting state-neural activity of dopaminergic neurons in the ventral tegmental area (VTA) on social interaction using a developmental rat model for schizophrenia. We prepared the model by administering an ammonitic cytokine, epidermal growth factor (EGF), to rat pups, which later exhibit the deficits of social interaction as monitored with same-gender affiliative sniffing. In vivo single-unit recording and microdialysis revealed that the baseline firing frequency of and dopamine release from VTA dopaminergic neurons were chronically increased in EGF model rats, and their social interaction was concomitantly reduced. Subchronic treatment with risperidone ameliorated both the social interaction deficits and higher frequency of dopaminergic cell firing in this model. Sustained suppression of hyperdopaminergic cell firing in EGF model rats by DREADD chemogenetic intervention restored the event-triggered dopamine release and their social behaviors. These observations suggest that the higher resting-state activity of VTA dopaminergic neurons is responsible for the reduced social interaction of this schizophrenia model.
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Affiliation(s)
- Hidekazu Sotoyama
- grid.260975.f0000 0001 0671 5144Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Hisaaki Namba
- grid.260975.f0000 0001 0671 5144Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan ,grid.412857.d0000 0004 1763 1087Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, 640-8156 Japan
| | - Yutaro Kobayashi
- grid.260975.f0000 0001 0671 5144Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Taku Hasegawa
- grid.258799.80000 0004 0372 2033Department of Biological Sciences, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Dai Watanabe
- grid.258799.80000 0004 0372 2033Department of Biological Sciences, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501 Japan
| | - Ena Nakatsukasa
- grid.260975.f0000 0001 0671 5144Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Kenji Sakimura
- grid.260975.f0000 0001 0671 5144Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585 Japan
| | - Tomoyuki Furuyashiki
- grid.31432.370000 0001 1092 3077Division of Pharmacology, Graduate School of Medicine, Kobe University, Hyogo, 650-0017 Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan. .,Department of Physiological Sciences, School of Pharmaceutical Sciences, Wakayama Medical University, Wakayama, 640-8156, Japan.
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Namba H, Nawa H. Post-pubertal Difference in Nigral Dopaminergic Cells Firing in the Schizophrenia Model Prepared by Perinatal Challenges of a Cytokine, EGF. Neuroscience 2020; 441:22-32. [PMID: 32531471 DOI: 10.1016/j.neuroscience.2020.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 12/21/2022]
Abstract
Schizophrenia in humans typically develops during and after adolescence; however, the biological underpinning for the specificity of this onset time window remains to be determined. In the present study, we investigated this knowledge gap using our own animal model for schizophrenia. Rodents and monkeys challenged with a cytokine, epidermal growth factor (EGF), as neonates are known to exhibit various behavioral and cognitive abnormalities at the post-pubertal stage. We used the EGF-challenged mice as an animal model for schizophrenia to evaluate the electrophysiological impact of this modeling on nigral dopamine neurons before and after puberty. In vivo single unit recording revealed that the burst firing of putative dopamine neurons in substantia nigra pars compacta was significantly higher in the post-pubertal stage of the EGF model than in that of control mice; in contrast, this difference was not observed in the pre-pubertal stage. The increase in burst firing was accompanied by a decline in Ca2+-activated K+ (ISK) currents, which influence the firing pattern of dopamine neurons. In vivo local application of the SK channel blocker apamin (80 μM) to the substantia nigra was less effective at increasing burst firing in the EGF model than in control mice, suggesting the pathologic role of the ISK decrease in this model. Thus, these results suggest that the aberrant post-pubertal hyperactivity of midbrain dopaminergic neurons is associated with the temporal specificity of the behavioral deficit of this model, and support the hypothesis that this dopaminergic aberration could be implicated in the adolescent onset of schizophrenia.
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Affiliation(s)
- Hisaaki Namba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan.
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan.
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ErbB4 Null Mice Display Altered Mesocorticolimbic and Nigrostriatal Dopamine Levels as well as Deficits in Cognitive and Motivational Behaviors. eNeuro 2020; 7:ENEURO.0395-19.2020. [PMID: 32354758 PMCID: PMC7242816 DOI: 10.1523/eneuro.0395-19.2020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 12/17/2022] Open
Abstract
Natural genetic variants of Neuregulin1 (NRG1) and its cognate receptor ErbB4 are associated with a risk for schizophrenia. Whereas most studies on NRG1-ErbB4 signaling have focused on GABAergic interneurons, ErbB4 is also expressed by midbrain dopaminergic neurons where it modulates extracellular dopamine (DA) levels. Here, we report that extracellular steady-state levels of DA are reduced in the medial prefrontal cortex (mPFC; −65%), hippocampus (−53%) and nucleus accumbens (NAc; −35%), but are elevated in the dorsal striatum (+25%) of ErbB4 knock-out mice (ErbB4 KOs) relative to wild-type controls. This pattern of DA imbalance recapitulates the reported prefrontal cortical reduction and striatal increase of DA levels in schizophrenia patients. Next, we report on a battery of behavioral tasks used to evaluate locomotor, cognitive and motivational behaviors in ErbB4 KOs relative to controls. We found that ErbB4 KOs are hyperactive in a novel open field but not in their familiar home cage, are more sensitive to amphetamine, perform poorly in the T-maze and novel object recognition (NOR) tasks, exhibit reduced spatial learning and memory on the Barnes maze, and perform markedly worse in conditioned place preference (CPP) tasks when associating cued-reward palatable food with location. However, we found that the poor performance of ErbB4 KOs in CPP are likely due to deficits in spatial memory, instead of reward seeking, as ErbB4 KOs are more motivated to work for palatable food rewards. Our findings indicate that ErbB4 signaling affects tonic DA levels and modulates a wide array of behavioral deficits relevant to psychiatric disorders, including schizophrenia.
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Zhuo C, Xun Z, Hou W, Ji F, Lin X, Tian H, Zheng W, Chen M, Liu C, Wang W, Chen C. Surprising Anticancer Activities of Psychiatric Medications: Old Drugs Offer New Hope for Patients With Brain Cancer. Front Pharmacol 2019; 10:1262. [PMID: 31695618 PMCID: PMC6817617 DOI: 10.3389/fphar.2019.01262] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 09/30/2019] [Indexed: 12/17/2022] Open
Abstract
Despite decades of research and major efforts, malignant brain tumors remain among the deadliest of all cancers. Recently, an increasing number of psychiatric drugs has been proven to possess suppressing activities against brain tumors, and rapid progress has been made in understanding the potential mechanisms of action of these drugs. In particular, the traditional mood stabilizer valproic acid, the widely used antidepressants fluoxetine and escitalopram oxalate, and the atypical psychiatric drug aripiprazole have demonstrated promise for application in brain tumor treatment strategies through multiple lines of laboratory, preclinical, and clinical evidence. The unexpected discovery of the anticancer properties of these drugs has ignited interest in the repurposing of other psychiatric drugs to combat brain cancer. In this review, we synthesize recent progress in understanding the potential molecular mechanisms underlying the brain cancer-killing activities of representative psychiatric drugs. We also identify key limitations in the repurposing of these medications that must be overcome to enhance our ability to successfully prevent and treat brain cancer, especially in the most vulnerable groups of patients, such as children and adolescents, pregnant women, and those with unfavorable genetic variants. Moreover, we propose perspectives that may guide future research and provide long-awaited new hope to patients with brain cancer and their families.
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Affiliation(s)
- Chuanjun Zhuo
- Department of Psychiatry, School of Mental Health, Psychiatric Genetics Laboratory (PSYG-Lab), Jining Medical University, Jining, China.,Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, China.,Department of China-Canada Biological Psychiatry Lab, Xiamen Xianyue Hospital, Xiamen, China.,Department of Psychiatric-Neuroimaging-Genetics and Morbidity Laboratory (PNGC-Lab), Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Mental Health Teaching Hospital, Tianjin Medical University, Tianjin, China
| | - Zhiyuan Xun
- Department of Psychiatric-Neuroimaging-Genetics and Morbidity Laboratory (PNGC-Lab), Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Mental Health Teaching Hospital, Tianjin Medical University, Tianjin, China
| | - Weihong Hou
- Department of Biochemistry and Molecular Biology, Zhengzhou University, Zhengzhou, China.,Department of Biology, University of North Carolina at Charlotte, Charlotte, NC, United States
| | - Feng Ji
- Department of Psychiatry, School of Mental Health, Psychiatric Genetics Laboratory (PSYG-Lab), Jining Medical University, Jining, China
| | - Xiaodong Lin
- Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, China
| | - Hongjun Tian
- Department of Psychiatric-Neuroimaging-Genetics and Morbidity Laboratory (PNGC-Lab), Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Mental Health Teaching Hospital, Tianjin Medical University, Tianjin, China
| | - Weifang Zheng
- Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, China
| | - Min Chen
- Department of Psychiatry, School of Mental Health, Psychiatric Genetics Laboratory (PSYG-Lab), Jining Medical University, Jining, China
| | - Chuanxin Liu
- Department of Psychiatry, School of Mental Health, Psychiatric Genetics Laboratory (PSYG-Lab), Jining Medical University, Jining, China
| | - Wenqiang Wang
- Department of China-Canada Biological Psychiatry Lab, Xiamen Xianyue Hospital, Xiamen, China
| | - Ce Chen
- Department of Psychiatry, Wenzhou Seventh People's Hospital, Wenzhou, China
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Gao X, Mi Y, Guo N, Xu H, Jiang P, Zhang R, Xu L, Gou X. Glioma in Schizophrenia: Is the Risk Higher or Lower? Front Cell Neurosci 2018; 12:289. [PMID: 30233327 PMCID: PMC6129591 DOI: 10.3389/fncel.2018.00289] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/13/2018] [Indexed: 12/17/2022] Open
Abstract
Whether persons with schizophrenia have a higher or lower incidence of cancer has been discussed for a long time. Due to the complex mechanisms and characteristics of different types of cancer, it is difficult to evaluate the exact relationship between cancers and schizophrenia without considering the type of tumor. Schizophrenia, a disabling mental illness that is now recognized as a neurodevelopmental disorder, is more correlated with brain tumors, such as glioma, than other types of tumors. Thus, we mainly focused on the relationship between schizophrenia and glioma morbidity. Glioma tumorigenesis and schizophrenia may share similar mechanisms; gene/pathway disruption would affect neurodevelopment and reduce the risk of glioma. The molecular defects of disrupted-in-schizophrenia-1 (DISC1), P53, brain-derived neurotrophic factor (BDNF) and C-X-C chemokine receptors type 4 (CXCR4) involved in schizophrenia pathogenesis might play opposite roles in glioma development. Many microRNAs (miRNAs) such as miR-183, miR-9, miR-137 and miR-126 expression change may be involved in the cross talk between glioma prevalence and schizophrenia. Finally, antipsychotic drugs may have antitumor effects. All these factors show that persons with schizophrenia have a decreased incidence of glioma; therefore, epidemiological investigation and studies comparing genetic and epigenetic aberrations involved in both of these complex diseases should be performed. These studies can provide more insightful knowledge about glioma and schizophrenia pathophysiology and help to determine the target/strategies for the prevention and treatment of the two diseases.
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Affiliation(s)
- Xingchun Gao
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology, Department of Anesthesiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yajing Mi
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
| | - Na Guo
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
| | - Hao Xu
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology, Department of Anesthesiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Pengtao Jiang
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
| | - Ruisan Zhang
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
| | - Lixian Xu
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology, Department of Anesthesiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xingchun Gou
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic Medical Sciences & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
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12
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Namba H, Nagano T, Jodo E, Eifuku S, Horie M, Takebayashi H, Iwakura Y, Sotoyama H, Takei N, Nawa H. Epidermal growth factor signals attenuate phenotypic and functional development of neocortical GABA neurons. J Neurochem 2017; 142:886-900. [PMID: 28608461 DOI: 10.1111/jnc.14097] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 04/24/2017] [Accepted: 05/23/2017] [Indexed: 01/21/2023]
Abstract
Phenotypic development of neocortical GABA neurons is highly plastic and promoted by various neurotrophic factors such as neuregulin-1. A subpopulation of GABA neurons expresses not only neuregulin receptor (ErbB4) but also epidermal growth factor (EGF) receptor (ErbB1) during development, but the neurobiological action of EGF on this cell population is less understood than that of neuregulin-1. Here, we examined the effects of exogenous EGF on immature GABA neurons both in culture and in vivo and also explored physiological consequences in adults. We prepared low density cultures from the neocortex of rat embryos and treated neocortical neurons with EGF. EGF decreased protein levels of glutamic acid decarboxylases (GAD65 and GAD67), and EGF influences on neuronal survival and glial proliferation were negligible or limited. The EGF treatment also diminished the frequency of miniature inhibitory postsynaptic currents (mIPSCs). In vivo administration of EGF to mouse pups reproduced the above GABAergic phenomena in neocortical culture. In EGF-injected postnatal mice, GAD- and parvalbumin-immunoreactivities were reduced in the frontal cortex. In addition, postnatal EGF treatment decreased mIPSC frequency in, and the density of, GABAergic terminals on pyramidal cells. Although these phenotypic influences on GABA neurons became less marked during development, it later resulted in the reduced β- and γ-powers of sound-evoked electroencephalogram in adults, which is regulated by parvalbumin-positive GABA neurons and implicated in the schizophrenia pathophysiology. These findings suggest that, in contrast to the ErbB4 ligand of neuregulin-1, the ErbB1 ligand of EGF exerts unique maturation-attenuating influences on developing cortical GABAergic neurons.
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Affiliation(s)
- Hisaaki Namba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
| | - Tadasato Nagano
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan.,Department of Health and Nutrition, University of Niigata Prefecture, Higashi-ku, Niigata, Japan
| | - Eiichi Jodo
- Department of Neurophysiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Satoshi Eifuku
- Department of Neurophysiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masao Horie
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yuriko Iwakura
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
| | - Hidekazu Sotoyama
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
| | - Nobuyuki Takei
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
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13
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Sotoyama H, Iwakura Y, Oda K, Sasaoka T, Takei N, Kakita A, Enomoto H, Nawa H. Striatal hypodopamine phenotypes found in transgenic mice that overexpress glial cell line-derived neurotrophic factor. Neurosci Lett 2017. [PMID: 28645787 DOI: 10.1016/j.neulet.2017.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Glial cell line-derived neurotrophic factor (GDNF) positively regulates the development and maintenance of in vitro dopaminergic neurons. However, the in vivo influences of GDNF signals on the brain dopamine system are controversial and not fully defined. To address this question, we analyzed dopaminergic phenotypes of the transgenic mice that overexpress GDNF under the control of the glial Gfap promoter. Compared with wild-type, the GDNF transgenic mice contained higher levels of GDNF protein and phosphorylated RET receptors in the brain. However, there were reductions in the levels of tyrosine hydroxylase (TH), dopamine, and its metabolite homovanillic acid in the striatum of transgenic mice. The TH reduction appeared to occur during postnatal development. Immunohistochemistry revealed that striatal TH density was reduced in transgenic mice with no apparent signs of neurodegeneration. In agreement with these neurochemical traits, basal levels of extracellular dopamine and high K+-induced dopamine efflux were decreased in the striatum of transgenic mice. We also explored the influences of GDNF overexpression on lomomotor behavior. GDNF transgenic mice exhibited lower stereotypy and rearing in a novel environment compared with wild-type mice. These results suggest that chronic overexpression of GDNF in brain astrocytes exerts an opposing influence on nigrostriatal dopamine metabolism and neurotransmission.
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Affiliation(s)
- Hidekazu Sotoyama
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Japan
| | - Yuriko Iwakura
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Japan
| | - Kanako Oda
- Department of Comparative and Experimental Medicine, Brain Research Institute, Niigata University, Japan
| | - Toshikuni Sasaoka
- Department of Comparative and Experimental Medicine, Brain Research Institute, Niigata University, Japan
| | - Nobuyuki Takei
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Japan
| | - Hideki Enomoto
- Laboratory for Neural Differentiation and Regeneration, Graduate School of Medicine, Kobe University, Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Japan.
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14
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Striatum and globus pallidus control the electrical activity of reticular thalamic nuclei. Brain Res 2016; 1644:258-66. [DOI: 10.1016/j.brainres.2016.05.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/29/2016] [Accepted: 05/17/2016] [Indexed: 11/18/2022]
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15
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Malt EA, Juhasz K, Malt UF, Naumann T. A Role for the Transcription Factor Nk2 Homeobox 1 in Schizophrenia: Convergent Evidence from Animal and Human Studies. Front Behav Neurosci 2016; 10:59. [PMID: 27064909 PMCID: PMC4811959 DOI: 10.3389/fnbeh.2016.00059] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 03/11/2016] [Indexed: 12/22/2022] Open
Abstract
Schizophrenia is a highly heritable disorder with diverse mental and somatic symptoms. The molecular mechanisms leading from genes to disease pathology in schizophrenia remain largely unknown. Genome-wide association studies (GWASs) have shown that common single-nucleotide polymorphisms associated with specific diseases are enriched in the recognition sequences of transcription factors that regulate physiological processes relevant to the disease. We have used a “bottom-up” approach and tracked a developmental trajectory from embryology to physiological processes and behavior and recognized that the transcription factor NK2 homeobox 1 (NKX2-1) possesses properties of particular interest for schizophrenia. NKX2-1 is selectively expressed from prenatal development to adulthood in the brain, thyroid gland, parathyroid gland, lungs, skin, and enteric ganglia, and has key functions at the interface of the brain, the endocrine-, and the immune system. In the developing brain, NKX2-1-expressing progenitor cells differentiate into distinct subclasses of forebrain GABAergic and cholinergic neurons, astrocytes, and oligodendrocytes. The transcription factor is highly expressed in mature limbic circuits related to context-dependent goal-directed patterns of behavior, social interaction and reproduction, fear responses, responses to light, and other homeostatic processes. It is essential for development and mature function of the thyroid gland and the respiratory system, and is involved in calcium metabolism and immune responses. NKX2-1 interacts with a number of genes identified as susceptibility genes for schizophrenia. We suggest that NKX2-1 may lie at the core of several dose dependent pathways that are dysregulated in schizophrenia. We correlate the symptoms seen in schizophrenia with the temporal and spatial activities of NKX2-1 in order to highlight promising future research areas.
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Affiliation(s)
- Eva A Malt
- Department of Adult Habilitation, Akershus University HospitalLørenskog, Norway; Institute of Clinical Medicine, Ahus Campus University of OsloOslo, Norway
| | - Katalin Juhasz
- Department of Adult Habilitation, Akershus University Hospital Lørenskog, Norway
| | - Ulrik F Malt
- Institute of Clinical Medicine, University of OsloOslo, Norway; Department of Research and Education, Institution of Oslo University HospitalOslo, Norway
| | - Thomas Naumann
- Centre of Anatomy, Institute of Cell Biology and Neurobiology, Charite Universitätsmedizin Berlin Berlin, Germany
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16
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Nagano T, Mizuno M, Morita K, Nawa H. Pathological Implications of Oxidative Stress in Patients and Animal Models with Schizophrenia: The Role of Epidermal Growth Factor Receptor Signaling. Curr Top Behav Neurosci 2016; 29:429-446. [PMID: 26475158 DOI: 10.1007/7854_2015_399] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Proinflammatory cytokines perturb brain development and neurotransmission and are implicated in various psychiatric diseases, such as schizophrenia and depression. These cytokines often induce the production of reactive oxygen species (ROS) and regulate not only cell survival and proliferation but also inflammatory process and neurotransmission. Under physiological conditions, ROS are moderately produced in mitochondria but are rapidly scavenged by reducing agents in cells. However, brain injury, ischemia, infection, or seizure-like neural activities induce inflammatory cytokines and trigger the production of excessive amounts of ROS, leading to abnormal brain functions and psychiatric symptoms. Protein phosphatases, which are involved in the basal silencing of cytokine receptor activation, are the major targets of ROS. Consistent with this, several ROS scavengers, such as polyphenols and unsaturated fatty acids, attenuate both cytokine signaling and psychiatric abnormalities. In this review, we list the inducers, producers, targets, and scavengers of ROS in the brain and discuss the interaction between ROS and cytokine signaling implicated in schizophrenia and its animal models. In particular, we present an animal model of schizophrenia established by perinatal exposure to epidermal growth factor and illustrate the pathological role of ROS and antipsychotic actions of ROS scavengers, such as emodin and edaravone.
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Affiliation(s)
- Tadasato Nagano
- Faculty of Human Life Studies, University of Niigata Prefecture, 471 Ebigase, Higashi-ku, Niigata, 950-8680, Japan
| | - Makoto Mizuno
- Aichi Human Service Center, Institute for Developmental Research, Kasugai, Aichi, 480-0392, Japan
| | - Keisuke Morita
- Department of Molecular Biology, Brain Research Institute, Niigata University, Asahimachi-Dori 1-757, Niigata, 951-8585, Japan
| | - Hiroyuki Nawa
- Department of Molecular Biology, Brain Research Institute, Niigata University, Asahimachi-Dori 1-757, Niigata, 951-8585, Japan.
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17
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Abstract
Over the past 60 years, a large number of selective neurotoxins were discovered and developed, making it possible to animal-model a broad range of human neuropsychiatric and neurodevelopmental disorders. In this paper, we highlight those neurotoxins that are most commonly used as neuroteratologic agents, to either produce lifelong destruction of neurons of a particular phenotype, or a group of neurons linked by a specific class of transporter proteins (i.e., dopamine transporter) or body of receptors for a specific neurotransmitter (i.e., NMDA class of glutamate receptors). Actions of a range of neurotoxins are described: 6-hydroxydopamine (6-OHDA), 6-hydroxydopa, DSP-4, MPTP, methamphetamine, IgG-saporin, domoate, NMDA receptor antagonists, and valproate. Their neuroteratologic features are outlined, as well as those of nerve growth factor, epidermal growth factor, and that of stress. The value of each of these neurotoxins in animal modeling of human neurologic, neurodegenerative, and neuropsychiatric disorders is discussed in terms of the respective value as well as limitations of the derived animal model. Neuroteratologic agents have proven to be of immense importance for understanding how associated neural systems in human neural disorders may be better targeted by new therapeutic agents.
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Affiliation(s)
- Trevor Archer
- Department of Psychology, University of Gothenburg, Box 500, 430 50, Gothenburg, Sweden.
| | - Richard M Kostrzewa
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, PO Box 70577, Johnson City, TN, 37614, USA
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18
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Feng M, Gao J, Sui N, Li M. Effects of central activation of serotonin 5-HT2A/2C or dopamine D 2/3 receptors on the acute and repeated effects of clozapine in the conditioned avoidance response test. Psychopharmacology (Berl) 2015; 232:1219-30. [PMID: 25288514 PMCID: PMC4361252 DOI: 10.1007/s00213-014-3756-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 09/23/2014] [Indexed: 02/04/2023]
Abstract
RATIONALE Acute administration of clozapine (a gold standard of atypical antipsychotics) disrupts avoidance response in rodents, while repeated administration often causes a tolerance effect. OBJECTIVE The present study investigated the neuroanatomical basis and receptor mechanisms of acute and repeated effects of clozapine treatment in the conditioned avoidance response test in male Sprague-Dawley rats. METHODS 2,5-dimethoxy-4-iodo-amphetamine (DOI, a preferential 5-HT2A/2C agonist) or quinpirole (a preferential dopamine D2/3 agonist) was microinjected into the medial prefrontal cortex (mPFC) or nucleus accumbens shell (NAs), and their effects on the acute and long-term avoidance disruptive effect of clozapine were tested. RESULTS Intra-mPFC microinjection of quinpirole enhanced the acute avoidance disruptive effect of clozapine (10 mg/kg, sc), while DOI microinjections reduced it marginally. Repeated administration of clozapine (10 mg/kg, sc) daily for 5 days caused a progressive decrease in its inhibition of avoidance responding, indicating tolerance development. Intra-mPFC microinjection of DOI at 25.0 (but not 5.0) μg/side during this period completely abolished the expression of clozapine tolerance. This was indicated by the finding that clozapine-treated rats centrally infused with 25.0 μg/side DOI did not show higher levels of avoidance responses than the vehicle-treated rats in the clozapine challenge test. Microinjection of DOI into the mPFC immediately before the challenge test also decreased the expression of clozapine tolerance. CONCLUSIONS Acute behavioral effect of clozapine can be enhanced by activation of the D2/3 receptors in the mPFC. Clozapine tolerance expression relies on the neuroplasticity initiated by its antagonist action against 5-HT2A/2C receptors in the mPFC.
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Affiliation(s)
- Min Feng
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China, Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA, Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Jun Gao
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Nan Sui
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Ming Li
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA,Corresponding address: Ming Li, PhD, 238 Burnett Hall, Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA.
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19
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Neuropathologic implication of peripheral neuregulin-1 and EGF signals in dopaminergic dysfunction and behavioral deficits relevant to schizophrenia: their target cells and time window. BIOMED RESEARCH INTERNATIONAL 2014; 2014:697935. [PMID: 24949465 PMCID: PMC4052624 DOI: 10.1155/2014/697935] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 04/10/2014] [Indexed: 01/01/2023]
Abstract
Neuregulin-1 and epidermal growth factor (EGF) are implicated in the pathogenesis of schizophrenia. To test the developmental hypothesis for schizophrenia, we administered these factors to rodent pups, juveniles, and adults and characterized neurobiological and behavioral consequences. These factors were also provided from their transgenes or infused into the adult brain. Here we summarize previous results from these experiments and discuss those from neuropathological aspects. In the neonatal stage but not the juvenile and adult stages, subcutaneously injected factors penetrated the blood-brain barrier and acted on brain neurons, which later resulted in persistent behavioral and dopaminergic impairments associated with schizophrenia. Neonatally EGF-treated animals exhibited persistent hyperdopaminergic abnormalities in the nigro-pallido-striatal system while neuregulin-1 treatment resulted in dopaminergic deficits in the corticolimbic dopamine system. Effects on GABAergic and glutamatergic systems were transient or limited. Even in the adult stage, intracerebral administration and transgenic expression of these factors produced similar but not identical behavioral impairments, although the effects of intracerebral administration were reversible. These findings suggest that dopaminergic development is highly vulnerable to circulating ErbB ligands in the pre- and perinatal stages. Once maldevelopment of the dopaminergic system is established during early development, dopamine-associating behavioral deficits become irreversible and manifest at postpubertal stages.
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20
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Ikuta T, Robinson DG, Gallego JA, Peters BD, Gruner P, Kane J, John M, Sevy S, Malhotra AK, Szeszko PR. Subcortical modulation of attentional control by second-generation antipsychotics in first-episode psychosis. Psychiatry Res 2014; 221:127-34. [PMID: 24120303 PMCID: PMC3946302 DOI: 10.1016/j.pscychresns.2013.09.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/11/2013] [Accepted: 09/12/2013] [Indexed: 11/26/2022]
Abstract
Psychotic disorders are characterized by significant deficits in attentional control, but the neurobiological mechanisms underlying these deficits early in the course of illness prior to extensive pharmacotherapy are not well understood. Moreover, little is known regarding the symptom and brain changes associated with amelioration of attentional impairments through antipsychotic pharmacotherapy. In this study 14 male patients experiencing a first-episode of psychosis with minimal prior antipsychotic treatment completed an attentional control task while undergoing functional magnetic resonance imaging at the onset of treatment with a second generation antipsychotic (risperidone or aripiprazole) in a double blind randomized clinical trial and then again following approximately 12 weeks of treatment. In addition, 14 age-, and performance-matched healthy male volunteers who were not treated completed the same task at a baseline timepoint and then again following 12 weeks. Patients showed significantly greater activation than healthy volunteers in the right globus pallidus, left thalamus, and right thalamus at the time of the baseline scan. Among patients there was a significant reduction in right globus pallidus blood-oxygen level dependent (BOLD) response following antipsychotic treatment that correlated significantly with improvement in response accuracy and reductions in thought disturbance. No changes in globus pallidus activation were observed in healthy volunteers over this time period. These preliminary findings suggest that improvement in attentional control and concomitant reductions in thought disturbance in first-episode psychosis may be associated with reductions in subcortical activity following administration of second-generation antipsychotics early in the course of illness. These findings have implications for understanding how changes in basal ganglia activity may be linked to improvements in attentional control through antipsychotics.
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Affiliation(s)
- Toshikazu Ikuta
- Department of Communication Sciences and Disorders, School of Applied Sciences, University of Mississippi, 352 Rebel Drive, University, MS 38766, USA.
| | - Delbert G. Robinson
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA,Hofstra North Shore - LIJ School of Medicine, Departments of Psychiatry and Molecular Medicine, Hempstead, NY, USA
| | - Juan A. Gallego
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA
| | - Bart D. Peters
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA
| | - Patricia Gruner
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - John Kane
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA,Hofstra North Shore - LIJ School of Medicine, Departments of Psychiatry and Molecular Medicine, Hempstead, NY, USA
| | - Majnu John
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA,Hofstra North Shore - LIJ School of Medicine, Departments of Psychiatry and Molecular Medicine, Hempstead, NY, USA
| | - Serge Sevy
- New York College of Osteopathic Medicine of the New York Institute of Technology, Old Westbury, NY, USA
| | - Anil K. Malhotra
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA,Hofstra North Shore - LIJ School of Medicine, Departments of Psychiatry and Molecular Medicine, Hempstead, NY, USA
| | - Philip R. Szeszko
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA,Psychiatry Research, Zucker Hillside Hospital, North Shore-LIJ Health System, Glen Oaks, NY, USA,Hofstra North Shore - LIJ School of Medicine, Departments of Psychiatry and Molecular Medicine, Hempstead, NY, USA
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21
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Moran PM, O'Tuathaigh CM, Papaleo F, Waddington JL. Dopaminergic function in relation to genes associated with risk for schizophrenia. PROGRESS IN BRAIN RESEARCH 2014; 211:79-112. [DOI: 10.1016/b978-0-444-63425-2.00004-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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22
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Eda T, Mizuno M, Araki K, Iwakura Y, Namba H, Sotoyama H, Kakita A, Takahashi H, Satoh H, Chan SY, Nawa H. Neurobehavioral deficits of epidermal growth factor-overexpressing transgenic mice: impact on dopamine metabolism. Neurosci Lett 2013; 547:21-5. [PMID: 23669645 DOI: 10.1016/j.neulet.2013.04.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/19/2013] [Accepted: 04/28/2013] [Indexed: 12/24/2022]
Abstract
Epidermal growth factor (EGF) and its family member neuregulin-1 are implicated in the etiology of schizophrenia. Our recent pharmacological studies indicate that EGF injections to neonatal and adult rats both induce neurobehavioral deficits relevant to schizophrenia. We, however, did not evaluate the genetic impact of EGF transgene on neurobehavioral traits. Here we analyzed transgenic mice carrying the transgene of mouse EGF cDNA. As compared to control littermates, heterozygous EGF transgenic mice had an increase in EGF mRNA levels and showed significant decreases in prepulse inhibition and context-dependent fear learning, but there were no changes in locomotor behaviors and sound startle responses. In addition, these transgenic mice exhibited higher behavioral sensitivity to the repeated cocaine injections. There were neurochemical alterations in metabolic enzymes of dopamine (i.e., tyrosine hydroxylase, dopa decarboxylase, catechol-O-methyl transferase) and monoamine contents in various brain regions of the EGF transgenic mice, but there were no apparent neuropathological signs in the brain. The present findings rule out the indirect influence of anti-EGF antibody production on the reported behavioral deficits of EGF-injected mice. These results support the argument that aberrant hyper-signals of EGF have significant impact on mouse behavioral traits and dopamine metabolism.
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Affiliation(s)
- Takeyoshi Eda
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
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23
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Mouri A, Nagai T, Ibi D, Yamada K. Animal models of schizophrenia for molecular and pharmacological intervention and potential candidate molecules. Neurobiol Dis 2013; 53:61-74. [DOI: 10.1016/j.nbd.2012.10.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 10/23/2012] [Accepted: 10/28/2012] [Indexed: 12/22/2022] Open
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24
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Mizuno M, Sotoyama H, Namba H, Shibuya M, Eda T, Wang R, Okubo T, Nagata K, Iwakura Y, Nawa H. ErbB inhibitors ameliorate behavioral impairments of an animal model for schizophrenia: implication of their dopamine-modulatory actions. Transl Psychiatry 2013; 3:e252. [PMID: 23632456 PMCID: PMC3641415 DOI: 10.1038/tp.2013.29] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ligands for ErbB receptors, including epidermal growth factor (EGF) and neuregulin-1, have a neurotrophic activity on midbrain dopaminergic neurons and are implicated in the pathophysiology of schizophrenia. Although ErbB kinase inhibitors ameliorate behavioral deficits of the schizophrenia model that was established by hippocampal lesioning of rat pups, the antipsychotic action of ErbB kinase inhibitors and its general applicability to other models are not fully characterized. Using a different animal model, here, we examined whether and how ErbB kinase inhibitors ameliorate the behavioral endophenotypes relevant to schizophrenia. The animal model for schizophrenia was prepared by exposing neonatal rats to the cytokine EGF. Intraventricular infusion of the ErbB1 inhibitors ZD1839 and PD153035 in these animals ameliorated the deficits in startle response and prepulse inhibition in a dose-dependent manner. The deficits of latent inhibition of fear learning were also alleviated by ZD1839 with its limited effects on body weight gain or locomotor activity. ZD1839 infusion also decreased the busting activity of nigral dopamine (DA) neurons and reduced pallidal DA metabolism, a result that mimics the anti-dopaminergic profile of risperidone and haloperidol in this brain region. ErbB inhibitors appear to have anti-dopaminergic actions to alleviate some of the behavioral deficits common to animal models for schizophrenia.
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Affiliation(s)
- M Mizuno
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan,Institute for Developmental Research, Aichi Human Service Center, Kasugai, Aichi, Japan
| | - H Sotoyama
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - H Namba
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - M Shibuya
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - T Eda
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - R Wang
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - T Okubo
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - K Nagata
- Institute for Developmental Research, Aichi Human Service Center, Kasugai, Aichi, Japan
| | - Y Iwakura
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - H Nawa
- Department of Molecular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan,Department of Molecular Biology, Brain Research Institute, Niigata University, Asahimachi-dori 1-757, Niigata 951-8585, Japan. E-mail:
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Sotoyama H, Namba H, Chiken S, Nambu A, Nawa H. Exposure to the cytokine EGF leads to abnormal hyperactivity of pallidal GABA neurons: implications for schizophrenia and its modeling. J Neurochem 2013; 126:518-28. [DOI: 10.1111/jnc.12223] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Revised: 02/03/2013] [Accepted: 02/15/2013] [Indexed: 10/27/2022]
Affiliation(s)
- Hidekazu Sotoyama
- Department of Molecular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Hisaaki Namba
- Department of Molecular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
| | - Satomi Chiken
- Division of System Neurobiology; National Institute for Physiological Sciences and Department of Physiological Sciences; Graduate University for Advanced Studies; Myodaiji Okazaki Japan
| | - Atsushi Nambu
- Division of System Neurobiology; National Institute for Physiological Sciences and Department of Physiological Sciences; Graduate University for Advanced Studies; Myodaiji Okazaki Japan
| | - Hiroyuki Nawa
- Department of Molecular Neurobiology; Brain Research Institute; Niigata University; Niigata Japan
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26
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Design and synthesis of D1 agonist/D2 antagonist for treatment of schizophrenia. Bioorg Med Chem Lett 2013; 23:1498-501. [DOI: 10.1016/j.bmcl.2012.12.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/06/2012] [Accepted: 12/13/2012] [Indexed: 11/23/2022]
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27
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Iwakura Y, Nawa H. ErbB1-4-dependent EGF/neuregulin signals and their cross talk in the central nervous system: pathological implications in schizophrenia and Parkinson's disease. Front Cell Neurosci 2013; 7:4. [PMID: 23408472 PMCID: PMC3570895 DOI: 10.3389/fncel.2013.00004] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 01/08/2013] [Indexed: 12/15/2022] Open
Abstract
Ligands for ErbB1-4 receptor tyrosine kinases, such as epidermal growth factor (EGF) and neuregulins, regulate brain development and function. Thus, abnormalities in their signaling are implicated in the etiology or pathology of schizophrenia and Parkinson's disease. Among the ErbB receptors, ErbB1, and ErbB4 are expressed in dopamine and GABA neurons, while ErbB1, 2, and/or 3 are mainly present in oligodendrocytes, astrocytes, and their precursors. Thus, deficits in ErbB signaling might contribute to the neurological and psychiatric diseases stemming from these cell types. By incorporating the latest cancer molecular biology as well as our recent progress, we discuss signal cross talk between the ErbB1-4 subunits and their neurobiological functions in each cell type. The potential contribution of virus-derived cytokines (virokines) that mimic EGF and neuregulin-1 in brain diseases are also discussed.
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Affiliation(s)
- Yuriko Iwakura
- Division of Molecular Neurobiology, Brain Research Institute, Niigata University Niigata, Japan
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