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Yang C, Chen X, Xu J, Chen W. SKF82958, a dopamine D1 receptor agonist, disrupts prepulse inhibition in the medial prefrontal cortex and nucleus accumbens in C57BL/6J mice. Behav Pharmacol 2024; 35:193-200. [PMID: 38567425 DOI: 10.1097/fbp.0000000000000768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Prepulse inhibition (PPI) is a crucial indicator of sensorimotor gating that is often impaired in neuropsychiatric diseases. Although dopamine D1 receptor agonists have been found to disrupt PPI in mice, the underlying mechanisms are not fully understood. In this study, we aimed to identify the brain regions responsible for the PPI-disruptive effect of the D1 agonist in mice. Results demonstrated that intraperitoneal administration of the selective dopamine D1 receptor agonist SKF82958 dramatically inhibited PPI, while the dopamine D1 receptor antagonist SCH23390 enhanced PPI. Additionally, local infusion of SKF82958 into the nucleus accumbens and medial prefrontal cortex disrupted PPI, but not in the ventral hippocampus. Infusion of SCH23390 into these brain regions also failed to enhance PPI. Overall, the study suggests that the nucleus accumbens and medial prefrontal cortex are responsible for the PPI-disruptive effect of dopamine D1 receptor agonists. These findings provide essential insights into the cellular and neural circuit mechanisms underlying the disruptive effects of dopamine D1 receptor agonists on PPI and may contribute to the development of novel treatments for neuropsychiatric diseases.
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Affiliation(s)
- Chengmei Yang
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education
- Faculty of Psychology, Southwest University
| | - Xiaoyu Chen
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education
- Faculty of Psychology, Southwest University
| | - Jingyang Xu
- Westa College, Southwest University, Chongqing, China
| | - Weihai Chen
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education
- Faculty of Psychology, Southwest University
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2
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Shingaki M, Itoh Y, Borgil B, Kida T, Inui K. Short-latency prepulse inhibition of the trigeminal blink reflex. Front Neurosci 2024; 18:1357368. [PMID: 38841093 PMCID: PMC11150608 DOI: 10.3389/fnins.2024.1357368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 05/13/2024] [Indexed: 06/07/2024] Open
Abstract
Prepulse inhibition (PPI) is a well-established phenomenon wherein a weak sensory stimulus attenuates the startle reflex triggered by a subsequent strong stimulus. Within the circuit, variations in target responses observed for PPI paradigms represent prepulse-induced excitability changes. However, little is known about the mechanism of PPI. Here, we focused on short-latency PPI of the trigeminal blink reflex R1 signal with an oligosynaptic reflex arc through the principal sensory trigeminal nucleus and the facial nucleus. As the facial nucleus is facilitatory to any input, R1 PPI is the phenomenon in the former nucleus. Considering that GABAergic modulation may be involved in PPI, this study investigated whether the PPI mechanism includes GABA-A equivalent inhibition, which peaks at approximately 30 ms in humans. In 12 healthy volunteers, the reflex was elicited by electrical stimulation of the supraorbital nerve, and recorded at the ipsilateral lower eyelid by accelerometer. Stimulus intensity was 1.5 times the R1 threshold for test stimulus and 0.9 times for the prepulse. The prepulse-test interval (PTI) was 5-150 ms. Results showed significant inhibition at 40-and 80-150-ms PTIs but not at 20-, 30-, 50-, 60-, and 70-ms PTIs, yielding two distinct inhibitions of different time scales. This corresponds well to the early and late components of inhibitory post synaptic potentials by GABA-A and GABA-B receptor activation. Thus, the data support the contribution of inhibitory post synaptic potentials elicited by the prepulse to the observed PPI. As inhibitory function-related diseases may impair the different inhibition components to varying degrees, methods deconvoluting each inhibitory component contribution are of clinical importance.
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Affiliation(s)
- Megumi Shingaki
- Department of Functioning and Disability, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai, Japan
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3
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Favero JD, Luck C, Lipp OV, Marinovic W. The effect of prepulse amplitude and timing on the perception of an electrotactile pulse. Atten Percept Psychophys 2024; 86:1038-1047. [PMID: 36385671 PMCID: PMC11062989 DOI: 10.3758/s13414-022-02597-x] [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] [Accepted: 10/11/2022] [Indexed: 11/17/2022]
Abstract
The perceived intensity of an intense stimulus as well as the startle reflex it elicits can both be reduced when preceded by a weak stimulus (prepulse). Both phenomena are used to characterise the processes of sensory gating in clinical and non-clinical populations. The latter phenomenon, startle prepulse inhibition (PPI), is conceptualised as a measure of pre-attentive sensorimotor gating due to its observation at short latencies. In contrast, the former, prepulse inhibition of perceived stimulus intensity (PPIPSI), is believed to involve higher-order cognitive processes (e.g., attention), which require longer latencies. Although conceptually distinct, PPIPSI is often studied using parameters that elicit maximal PPI, likely limiting what we can learn about sensory gating's influence on conscious perception. Here, we tested an array of stimulus onset asynchronies (SOAs; 0-602 ms) and prepulse intensities (0-3× perceptual threshold) to determine the time course and sensitivity to the intensity of electrotactile PPIPSI. Participants were required to compare an 'unpleasant but not painful' electric pulse to their left wrist that was presented alone with the same stimulus preceded by an electric prepulse, and report which pulse stimulus felt more intense. Using a 2× perceptual threshold prepulse, PPIPSI emerged as significant at SOAs from 162 to 602 ms. We conclude that evidence of electrotactile PPIPSI at SOAs of 162 ms or longer is consistent with gating of perception requiring higher-level processes, not measured by startle PPI. The possible role of attentional processes, stimuli intensity, modality-specific differences, and methods of investigating PPIPSI further are discussed.
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Affiliation(s)
- Jaspa D Favero
- School of Population Health, Curtin University, Perth, WA, Australia.
| | - Camilla Luck
- School of Population Health, Curtin University, Perth, WA, Australia
| | - Ottmar V Lipp
- School of Psychology and Counselling, Queensland University of Technology, Brisbane, QLD, Australia
| | - Welber Marinovic
- School of Population Health, Curtin University, Perth, WA, Australia.
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Ratz-Wirsching V, Habermeyer J, Moceri S, Harrer J, Schmitz C, von Hörsten S. Gene-dosage- and sex-dependent differences in the prodromal-Like phase of the F344tgHD rat model for Huntington disease. Front Neurosci 2024; 18:1354977. [PMID: 38384482 PMCID: PMC10879377 DOI: 10.3389/fnins.2024.1354977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/22/2024] [Indexed: 02/23/2024] Open
Abstract
In Huntington disease (HD) the prodromal phase has been increasingly investigated and is currently in focus for early interventional treatments. Also, the influence of sex on disease progression and severity in patients is under discussion, as a sex-specific impact has been reported in transgenic rodent models for HD. To this end, we have been studying these aspects in Sprague Dawley rats transgenic for HD. Here, we took up on the congenic F344tgHD rat model, expressing a fragmented Htt construct with 51 CAG repeats on an inbred F344 rat background and characterized potential sexual dimorphism and gene-dosage effects in rats during the pre-symptomatic phase (1-8 months of age). Our study comprises a longitudinal phenotyping of motor function, emotion and sensorimotor gating, as well as screening of metabolic parameters with classical and automated assays in combination with investigation of molecular HD hallmarks (striatal cell number and volume estimation, appearance of HTT aggregates). Differences between sexes became apparent during middle age, particularly in the motor and sensorimotor domains. Female individuals were generally more active, demonstrated different gait characteristics than males and less anxiolytic-like behavior. Alterations in both the time course and affected behavioral domains varied between male and female F344tgHD rats. First subtle behavioral anomalies were detected in transgenic F344tgHD rats prior to striatal MSN cell loss, revealing a prodromal-like phase in this model. Our findings demonstrate that the congenic F344tgHD rat model shows high face-validity, closely resembling the human disease's temporal progression, while having a relatively low number of CAG repeats, a slowly progressing pathology with a prodromal-like phase and a comparatively subtle phenotype. By differentiating the sexes regarding HD-related changes and characterizing the prodromal-like phase in this model, these findings provide a foundation for future treatment studies.
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Affiliation(s)
- Veronika Ratz-Wirsching
- Department of Experimental Therapy, University Hospital Erlangen, Erlangen, Germany
- Preclinical Experimental Center, Friedrich-Alexander-University, Erlangen-Nürnberg, Erlangen, Germany
| | - Johanna Habermeyer
- Department of Experimental Therapy, University Hospital Erlangen, Erlangen, Germany
- Preclinical Experimental Center, Friedrich-Alexander-University, Erlangen-Nürnberg, Erlangen, Germany
| | - Sandra Moceri
- Department of Experimental Therapy, University Hospital Erlangen, Erlangen, Germany
| | - Julia Harrer
- Department of Experimental Therapy, University Hospital Erlangen, Erlangen, Germany
| | - Christoph Schmitz
- Chair of Neuroanatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian University of Munich, Munich, Germany
| | - Stephan von Hörsten
- Department of Experimental Therapy, University Hospital Erlangen, Erlangen, Germany
- Preclinical Experimental Center, Friedrich-Alexander-University, Erlangen-Nürnberg, Erlangen, Germany
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5
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Withey SL, Pizzagalli DA, Bergman J. Translational In Vivo Assays in Behavioral Biology. Annu Rev Pharmacol Toxicol 2024; 64:435-453. [PMID: 37708432 DOI: 10.1146/annurev-pharmtox-051921-093711] [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] [Indexed: 09/16/2023]
Abstract
The failure of preclinical research to advance successful candidate medications in psychiatry has created a paradigmatic crisis in psychiatry. The Research Domain Criteria (RDoC) initiative was designed to remedy this situation with a neuroscience-based approach that employs multimodal and cross-species in vivo methodology to increase the probability of translational findings and, consequently, drug discovery. The present review underscores the feasibility of this methodological approach by briefly reviewing, first, the use of multidimensional and cross-species methodologies in traditional behavioral pharmacology and, subsequently, the utility of this approach in contemporary neuroimaging and electrophysiology research-with a focus on the value of functionally homologous studies in nonhuman and human subjects. The final section provides a brief review of the RDoC, with a focus on the potential strengths and weaknesses of its domain-based underpinnings. Optimistically, this mechanistic and multidimensional approach in neuropsychiatric research will lead to novel therapeutics for the management of neuropsychiatric disorders.
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Affiliation(s)
- Sarah L Withey
- Preclinical Behavioral Biology Program, McLean Hospital, Belmont, Massachusetts, USA;
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- McLean Imaging Center, McLean Hospital, Belmont, Massachusetts, USA
| | - Diego A Pizzagalli
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
- McLean Imaging Center, McLean Hospital, Belmont, Massachusetts, USA
- Center for Depression, Anxiety and Stress Research, McLean Hospital, Belmont, Massachusetts, USA
| | - Jack Bergman
- Preclinical Behavioral Biology Program, McLean Hospital, Belmont, Massachusetts, USA;
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
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van den Buuse M, Jaehne EJ. Testing Prepulse Inhibition of Acoustic Startle in Rodents. Methods Mol Biol 2024; 2746:121-133. [PMID: 38070085 DOI: 10.1007/978-1-0716-3585-8_10] [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] [Indexed: 12/18/2023]
Abstract
Prepulse inhibition (PPI) is a measure of sensorimotor gating which is widely used in rodents to study information processing and attention dysfunction. PPI is commonly measured in rats and mice using automated equipment. Here, we present details of a PPI testing protocol extensively used in previous studies. The protocol includes a set pulse-alone startle level and prepulse-pulse combinations with varying interval and intensity. Variations of this protocol can be used depending on the experimental aim or equipment and software version.
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Affiliation(s)
- Maarten van den Buuse
- School of Psychology and Public Health, La Trobe University, Melbourne, VIC, Australia.
| | - Emily J Jaehne
- School of Psychology and Public Health, La Trobe University, Melbourne, VIC, Australia
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Gillespie B, Panthi S, Sundram S, Hill RA. The impact of maternal immune activation on GABAergic interneuron development: A systematic review of rodent studies and their translational implications. Neurosci Biobehav Rev 2024; 156:105488. [PMID: 38042358 DOI: 10.1016/j.neubiorev.2023.105488] [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: 08/11/2023] [Revised: 11/09/2023] [Accepted: 11/27/2023] [Indexed: 12/04/2023]
Abstract
Mothers exposed to infections during pregnancy disproportionally birth children who develop autism and schizophrenia, disorders associated with altered GABAergic function. The maternal immune activation (MIA) model recapitulates this risk factor, with many studies also reporting disruptions to GABAergic interneuron expression, protein, cellular density and function. However, it is unclear if there are species, sex, age, region, or GABAergic subtype specific vulnerabilities to MIA. Furthermore, to fully comprehend the impact of MIA on the GABAergic system a synthesised account of molecular, cellular, electrophysiological and behavioural findings was required. To this end we conducted a systematic review of GABAergic interneuron changes in the MIA model, focusing on the prefrontal cortex and hippocampus. We reviewed 102 articles that revealed robust changes in a number of GABAergic markers that present as gestationally-specific, region-specific and sometimes sex-specific. Disruptions to GABAergic markers coincided with distinct behavioural phenotypes, including memory, sensorimotor gating, anxiety, and sociability. Findings suggest the MIA model is a valid tool for testing novel therapeutics designed to recover GABAergic function and associated behaviour.
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Affiliation(s)
- Brendan Gillespie
- Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, VIC 3168, Australia
| | - Sandesh Panthi
- Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, VIC 3168, Australia
| | - Suresh Sundram
- Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, VIC 3168, Australia
| | - Rachel A Hill
- Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, VIC 3168, Australia.
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Saha P, Andersen RE, Hong SJ, Gil E, Simms J, Lim DA. Sex-specific role for the long noncoding RNA Pnky in mouse behavior. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.05.569777. [PMID: 38105981 PMCID: PMC10723355 DOI: 10.1101/2023.12.05.569777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
The human brain expresses thousands of different long noncoding RNAs (lncRNAs), and aberrant expression of specific lncRNAs has been associated with cognitive and psychiatric disorders. While a growing number of lncRNAs are now known to regulate neural cell development and function, relatively few have been shown to underlie animal behavior, particularly with genetic strategies that establish lncRNA function in trans. Pnky is an evolutionarily conserved, neural lncRNA that regulates brain development. Using mouse genetic strategies, we show that Pnky has sex-specific roles in mouse behavior and that this lncRNA underlies specific behavior by functioning in trans. Male Pnky-knockout (KO) mice have deficits in cued fear recall, a type of Pavlovian associative memory. In female Pnky-KO mice, the acoustic startle response (ASR) is increased and accompanied by a decrease in prepulse inhibition (PPI), both of which are behaviors altered in affective disorders. Remarkably, expression of Pnky from a bacterial artificial chromosome (BAC) transgene reverses the ASR phenotype of female Pnky-KO mice, demonstrating that Pnky underlies specific animal behavior by functioning in trans. More broadly, these data provide genetic evidence that a lncRNA gene and its function in trans can play a key role in the behavior of adult mammals, contributing fundamental knowledge to our growing understanding of the association between specific lncRNAs and disorders of cognition and mood.
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Affiliation(s)
- Parna Saha
- Department of Neurological Surgery; University of California, San Francisco, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research; University of California, San Francisco, San Francisco, CA 94143, USA
| | - Rebecca E. Andersen
- Department of Neurological Surgery; University of California, San Francisco, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research; University of California, San Francisco, San Francisco, CA 94143, USA
| | - Sung Jun Hong
- Department of Neurological Surgery; University of California, San Francisco, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research; University of California, San Francisco, San Francisco, CA 94143, USA
| | - Eugene Gil
- Department of Neurological Surgery; University of California, San Francisco, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research; University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jeffrey Simms
- Behavioral Core, Gladstone Institutes, San Francisco; University of California, San Francisco, San Francisco, CA 94143, USA
| | - Daniel A. Lim
- Department of Neurological Surgery; University of California, San Francisco, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research; University of California, San Francisco, San Francisco, CA 94143, USA
- San Francisco Veterans Affairs Medical Center; University of California, San Francisco, San Francisco, CA 94143, USA
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9
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El-Cheikh Mohamad A, Möhrle D, Haddad FL, Rose A, Allman BL, Schmid S. Assessing the Cntnap2 knockout rat prepulse inhibition deficit through prepulse scaling of the baseline startle response curve. Transl Psychiatry 2023; 13:321. [PMID: 37852987 PMCID: PMC10584930 DOI: 10.1038/s41398-023-02629-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/27/2023] [Accepted: 10/06/2023] [Indexed: 10/20/2023] Open
Abstract
Many neurodevelopmental disorders, including autism spectrum disorder (ASD), are associated with changes in sensory processing and sensorimotor gating. The acoustic startle response and prepulse inhibition (PPI) of startle are widely used translational measures for assessing sensory processing and sensorimotor gating, respectively. The Cntnap2 knockout (KO) rat has proven to be a valid model for ASD, displaying core symptoms, including sensory processing perturbations. Here, we used a novel method to assess startle and PPI in Cntnap2 KO rats that allows for the identification of separate scaling components: startle scaling, which is a change in startle amplitude to a given sound, and sound scaling, which reflects a change in sound processing. Cntnap2 KO rats show increased startle due to both an increased overall response (startle scaling) and a left shift of the sound/response curve (sound scaling). In the presence of a prepulse, wildtype rats show a reduction of startle due to both startle scaling and sound scaling, whereas Cntnap2 KO rats show normal startle scaling, but disrupted sound scaling, resulting in the reported PPI deficit. These results validate that startle and sound scaling by a prepulse are indeed two independent processes, with only the latter being impaired in Cntnap2 KO rats. As startle scaling is likely related to motor output and sound scaling to sound processing, this novel approach reveals additional information on the possible cause of PPI disruptions in preclinical models.
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Affiliation(s)
- Alaa El-Cheikh Mohamad
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Dorit Möhrle
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Faraj L Haddad
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Anton Rose
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Brian L Allman
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Susanne Schmid
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada.
- Department of Psychology, University of Western Ontario, London, ON, Canada.
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10
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Necarsulmer JC, Simon JM, Evangelista BA, Chen Y, Tian X, Nafees S, Marquez AB, Jiang H, Wang P, Ajit D, Nikolova VD, Harper KM, Ezzell JA, Lin FC, Beltran AS, Moy SS, Cohen TJ. RNA-binding deficient TDP-43 drives cognitive decline in a mouse model of TDP-43 proteinopathy. eLife 2023; 12:RP85921. [PMID: 37819053 PMCID: PMC10567115 DOI: 10.7554/elife.85921] [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] [Indexed: 10/13/2023] Open
Abstract
TDP-43 proteinopathies including frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS) are neurodegenerative disorders characterized by aggregation and mislocalization of the nucleic acid-binding protein TDP-43 and subsequent neuronal dysfunction. Here, we developed endogenous models of sporadic TDP-43 proteinopathy based on the principle that disease-associated TDP-43 acetylation at lysine 145 (K145) alters TDP-43 conformation, impairs RNA-binding capacity, and induces downstream mis-regulation of target genes. Expression of acetylation-mimic TDP-43K145Q resulted in stress-induced nuclear TDP-43 foci and loss of TDP-43 function in primary mouse and human-induced pluripotent stem cell (hiPSC)-derived cortical neurons. Mice harboring the TDP-43K145Q mutation recapitulated key hallmarks of FTLD, including progressive TDP-43 phosphorylation and insolubility, TDP-43 mis-localization, transcriptomic and splicing alterations, and cognitive dysfunction. Our study supports a model in which TDP-43 acetylation drives neuronal dysfunction and cognitive decline through aberrant splicing and transcription of critical genes that regulate synaptic plasticity and stress response signaling. The neurodegenerative cascade initiated by TDP-43 acetylation recapitulates many aspects of human FTLD and provides a new paradigm to further interrogate TDP-43 proteinopathies.
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Affiliation(s)
- Julie C Necarsulmer
- Department of Cell Biology and Physiology, University of North CarolinaChapel HillUnited States
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Jeremy M Simon
- UNC Neuroscience Center, University of North CarolinaChapel HillUnited States
- Carolina Institute for Developmental Disabilities, University of North CarolinaChapel HillUnited States
- Department of Genetics, University of North CarolinaChapel HillUnited States
| | - Baggio A Evangelista
- Department of Cell Biology and Physiology, University of North CarolinaChapel HillUnited States
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Youjun Chen
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Xu Tian
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Sara Nafees
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Ariana B Marquez
- Human Pluripotent Stem Cell Core, University of North CarolinaChapel HillUnited States
| | - Huijun Jiang
- Department of Biostatistics, University of North CarolinaChapel HillUnited States
| | - Ping Wang
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Deepa Ajit
- Department of Neurology, University of North CarolinaChapel HillUnited States
| | - Viktoriya D Nikolova
- Carolina Institute for Developmental Disabilities, University of North CarolinaChapel HillUnited States
- Department of Psychiatry, The University of North CarolinaChapel HillUnited States
| | - Kathryn M Harper
- Carolina Institute for Developmental Disabilities, University of North CarolinaChapel HillUnited States
- Department of Psychiatry, The University of North CarolinaChapel HillUnited States
| | - J Ashley Ezzell
- Department of Cell Biology & Physiology, Histology Research Core Facility, University of North CarolinaChapel HillUnited States
| | - Feng-Chang Lin
- Department of Biostatistics, University of North CarolinaChapel HillUnited States
| | - Adriana S Beltran
- Department of Genetics, University of North CarolinaChapel HillUnited States
- Human Pluripotent Stem Cell Core, University of North CarolinaChapel HillUnited States
- Department of Pharmacology, University of North CarolinaChapel HillUnited States
| | - Sheryl S Moy
- Carolina Institute for Developmental Disabilities, University of North CarolinaChapel HillUnited States
- Department of Psychiatry, The University of North CarolinaChapel HillUnited States
| | - Todd J Cohen
- Department of Cell Biology and Physiology, University of North CarolinaChapel HillUnited States
- Department of Neurology, University of North CarolinaChapel HillUnited States
- UNC Neuroscience Center, University of North CarolinaChapel HillUnited States
- Department of Biochemistry and Biophysics, University of North CarolinaChapel HillUnited States
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11
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Frare C, Pitt SK, Hewett SJ. Sex- and age-dependent contribution of System x c- to cognitive, sensory, and social behaviors revealed by comprehensive behavioral analyses of System x c- null mice. Front Behav Neurosci 2023; 17:1238349. [PMID: 37649973 PMCID: PMC10462982 DOI: 10.3389/fnbeh.2023.1238349] [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: 06/11/2023] [Accepted: 07/31/2023] [Indexed: 09/01/2023] Open
Abstract
Background System xc- (Sxc-) is an important heteromeric amino acid cystine/glutamate exchanger that plays a pivotal role in the CNS by importing cystine into cells while exporting glutamate. Although certain behaviors have been identified as altered in Sxc- null mutant mice, our understanding of the comprehensive impact of Sxc- on behavior remains incomplete. Methods To address this gap, we compared motor, sensory and social behaviors of male and female mice in mice null for Sxc- (SLC7A11sut/sut) with wildtype littermates (SLC7A11+/+) in a comprehensive and systematic manner to determine effects of genotype, sex, age, and their potential interactions. Results Motor performance was not affected by loss of Sxc- in both males and females, although it was impacted negatively by age. Motor learning was specifically disrupted in female mice lacking Sxc- at both 2 and 6 months of age. Further, female SLC7A11sut/sut mice at both ages exhibited impaired sociability, but normal spatial and recognition memory, as well as sensorimotor gating. Finally, pronounced open-space anxiety was displayed by female SLC7A11sut/sut when they were young. In contrast, young SLC7A11sut/sut male mice demonstrated normal sociability, delayed spatial learning, increased open-space anxiety and heightened sensitivity to noise. As they aged, anxiety and noise sensitivity abated but hyperactivity emerged. Discussion We find that the behavioral phenotypes of female SLC7A11sut/sut are similar to those observed in mouse models of autism spectrum disorder, while behaviors of male SLC7A11sut/sut resemble those seen in mouse models of attention deficit hyperactivity disorder. These results underscore the need for further investigation of SLC7A11 in neurodevelopment. By expanding our understanding of the potential involvement of Sxc-, we may gain additional insights into the mechanisms underlying complex neurodevelopmental conditions.
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Affiliation(s)
| | | | - Sandra J. Hewett
- Department of Biology, Program in Neuroscience, Syracuse University, Syracuse, NY, United States
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12
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Souza INO, Andrade BS, Frost PS, Neris RLS, Gavino-Leopoldino D, Da Poian AT, Assunção-Miranda I, Figueiredo CP, Clarke JR, Neves GA. Different outcomes of neonatal and adult Zika virus infection on startle reflex and prepulse inhibition in mice. Behav Brain Res 2023; 451:114519. [PMID: 37263423 DOI: 10.1016/j.bbr.2023.114519] [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: 11/29/2022] [Revised: 05/20/2023] [Accepted: 05/28/2023] [Indexed: 06/03/2023]
Abstract
Zika virus (ZIKV) infection causes severe neurological consequences in both gestationally-exposed infants and adults. Sensorial gating deficits strongly correlate to the motor, sensorial and cognitive impairments observed in ZIKV-infected patients. However, no startle response or prepulse inhibition (PPI) assessment has been made in patients or animal models. In this study, we identified different outcomes according to the age of infection and sex in mice: neonatally infected animals presented an increase in PPI and delayed startle latency. However, adult-infected male mice presented lower startle amplitude, while a PPI impairment was observed 14 days after infection in both sexes. Our data further the understanding of the functional impacts of ZIKV on the developing and mature nervous system, which could help explain other behavioral and cognitive alterations caused by the virus. With this study, we support the startle reflex testing in ZIKV-exposed patients, especially infants, allowing for early detection of functional neuromotor damage and early intervention.
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Affiliation(s)
- Isis N O Souza
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Universidade Federal do Rio de Janeiro, Brazil; School of Pharmacy, Universidade Federal do Rio de Janeiro, Brazil
| | - Brenda S Andrade
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Universidade Federal do Rio de Janeiro, Brazil
| | - Paula S Frost
- School of Pharmacy, Universidade Federal do Rio de Janeiro, Brazil
| | - Romulo L S Neris
- Institute of Microbiology Paulo de Goes, Universidade Federal do Rio de Janeiro, Brazil
| | | | - Andrea T Da Poian
- Institute of Medical Biochemistry Leopoldo de Meis (IBqM), Universidade Federal do Rio de Janeiro, Brazil
| | | | | | - Julia R Clarke
- School of Pharmacy, Universidade Federal do Rio de Janeiro, Brazil
| | - Gilda A Neves
- Laboratory of Molecular Pharmacology, Institute of Biomedical Sciences, Universidade Federal do Rio de Janeiro, Brazil.
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Haddad FL, De Oliveira C, Schmid S. Investigating behavioral phenotypes related to autism spectrum disorder in a gene-environment interaction model of Cntnap2 deficiency and Poly I:C maternal immune activation. Front Neurosci 2023; 17:1160243. [PMID: 36998729 PMCID: PMC10043204 DOI: 10.3389/fnins.2023.1160243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
IntroductionAutism Spectrum Disorder (ASD) has been associated with a wide variety of genetic and environmental risk factors in both human and preclinical studies. Together, findings support a gene-environment interaction hypothesis whereby different risk factors independently and synergistically impair neurodevelopment and lead to the core symptoms of ASD. To date, this hypothesis has not been commonly investigated in preclinical ASD models. Mutations in the Contactin-associated protein-like 2 (Cntnap2) gene and exposure to maternal immune activation (MIA) during pregnancy have both been linked to ASD in humans, and preclinical rodent models have shown that both MIA and Cntnap2 deficiency lead to similar behavioral deficits.MethodsIn this study, we tested the interaction between these two risk factors by exposing Wildtype, Cntnap2+/–, and Cntnap2–/– rats to Polyinosinic: Polycytidylic acid (Poly I:C) MIA at gestation day 9.5.ResultsOur findings showed that Cntnap2 deficiency and Poly I:C MIA independently and synergistically altered ASD-related behaviors like open field exploration, social behavior, and sensory processing as measured through reactivity, sensitization, and pre-pulse inhibition (PPI) of the acoustic startle response. In support of the double-hit hypothesis, Poly I:C MIA acted synergistically with the Cntnap2–/– genotype to decrease PPI in adolescent offspring. In addition, Poly I:C MIA also interacted with the Cntnap2+/– genotype to produce subtle changes in locomotor hyperactivity and social behavior. On the other hand, Cntnap2 knockout and Poly I:C MIA showed independent effects on acoustic startle reactivity and sensitization.DiscussionTogether, our findings support the gene-environment interaction hypothesis of ASD by showing that different genetic and environmental risk factors could act synergistically to exacerbate behavioral changes. In addition, by showing the independent effects of each risk factor, our findings suggest that ASD phenotypes could be caused by different underlying mechanisms.
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Affiliation(s)
- Faraj L. Haddad
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Cleusa De Oliveira
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Susanne Schmid
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Psychology, The University of Western Ontario, London, ON, Canada
- *Correspondence: Susanne Schmid,
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Zheng A, Schmid S. A review of the neural basis underlying the acoustic startle response with a focus on recent developments in mammals. Neurosci Biobehav Rev 2023; 148:105129. [PMID: 36914078 DOI: 10.1016/j.neubiorev.2023.105129] [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: 01/13/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/13/2023]
Abstract
The startle response consists of whole-body muscle contractions, eye-blink, accelerated heart rate, and freezing in response to a strong, sudden stimulus. It is evolutionarily preserved and can be observed in any animal that can perceive sensory signals, indicating the important protective function of startle. Startle response measurements and its alterations have become a valuable tool for exploring sensorimotor processes and sensory gating, especially in the context of pathologies of psychiatric disorders. The last reviews on the neural substrates underlying acoustic startle were published around 20 years ago. Advancements in methods and techniques have since allowed new insights into acoustic startle mechanisms. This review is focused on the neural circuitry that drives the primary acoustic startle response in mammals. However, there have also been very successful efforts to identify the acoustic startle pathway in other vertebrates and invertebrates in the past decades, so at the end we briefly summarize these studies and comment on the similarities and differences between species.
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Affiliation(s)
- Alice Zheng
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Susanne Schmid
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada.
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15
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Zheng A, Scott KE, Schormans AL, Mann R, Allman BL, Schmid S. Differences in Startle and Prepulse Inhibition in Contactin-associated Protein-like 2 Knock-out Rats are Associated with Sex-specific Alterations in Brainstem Neural Activity. Neuroscience 2023; 513:96-110. [PMID: 36708798 DOI: 10.1016/j.neuroscience.2023.01.020] [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: 08/05/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023]
Abstract
The contactin-associated protein-like 2 (CNTNAP2) gene encodes for the CASPR2 protein, which plays an essential role in neurodevelopment. Mutations in CNTNAP2 are associated with neurodevelopmental disorders, including autism spectrum disorder and schizophrenia. Rats with a loss of function mutation in the Cntnap2 gene show increased acoustic startle response (ASR) and decreased prepulse inhibition (PPI). The neural basis of this altered auditory processing in Cntnap2 knock-out rats is currently unknown. Auditory brainstem recordings previously revealed no differences between the genotypes. The next step is to investigate brainstem structures outside of the primary auditory pathway that mediate ASR and PPI, which are the pontine reticular nucleus (PnC) and pedunculopontine tegmentum (PPTg), respectively. Multi-unit responses from the PnC and PPTg in vivo of the same rats revealed sex-specific effects of loss of CASPR2 expression on PnC activity, but no effects on PPTg activity. Female Cntnap2-/- rats showed considerably increased PnC firing rates compared with female wildtypes, whereas the difference between the genotypes was modest in male rats. In contrast, for both females and males we found meager differences between the genotypes for PPTg firing rates and inhibition of PnC firing rates, indicating that altered firing rates of these brainstem structures are not responsible for decreased PPI in Cntnap2-/- rats. We conclude that the auditory processing changes seen in Cntnap2-/- rats are associated with, but cannot be fully explained by, differences in PnC firing rates, and that a loss of function mutation in the Cntnap2 gene has differential effects depending on sex.
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Affiliation(s)
- Alice Zheng
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Kaela E Scott
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Ashley L Schormans
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Rajkamalpreet Mann
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Brian L Allman
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada
| | - Susanne Schmid
- Anatomy & Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, Canada.
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16
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Consoli DC, Spitznagel BD, Owen BM, Kang H, Williams Roberson S, Pandharipande P, Wesley Ely E, Nobis WP, Bastarache JA, Harrison FE. Altered EEG, disrupted hippocampal long-term potentiation and neurobehavioral deficits implicate a delirium-like state in a mouse model of sepsis. Brain Behav Immun 2023; 107:165-178. [PMID: 36243287 PMCID: PMC10010333 DOI: 10.1016/j.bbi.2022.10.003] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 09/26/2022] [Accepted: 10/09/2022] [Indexed: 11/06/2022] Open
Abstract
Sepsis and systemic inflammation are often accompanied by severe encephalopathy, sleep disruption and delirium that strongly correlate with poor clinical outcomes including long-term cognitive deficits. The cardinal manifestations of delirium are fluctuating altered mental status and inattention, identified in critically ill patients by interactive bedside assessment. The lack of analogous assessments in mouse models or clear biomarkers is a challenge to preclinical studies of delirium. In this study, we utilized concurrent measures of telemetric EEG recordings and neurobehavioral tasks in mice to characterize inattention and persistent cognitive deficits following polymicrobial sepsis. During the 24-hour critical illness period for the mice, slow-wave EEG dominance, sleep disruption, and hypersensitivity to auditory stimuli in neurobehavioral tasks resembled clinical observations in delirious patients in which alterations in similar outcome measurements, although measured differently in mice and humans, are reported. Mice were tested for nest building ability 7 days after sepsis induction, when sickness behaviors and spontaneous activity had returned to baseline. Animals that showed persistent deficits determined by poor nest building at 7 days also exhibited molecular changes in hippocampal long-term potentiation compared to mice that returned to baseline cognitive performance. Together, these behavioral and electrophysiological biomarkers offer a robust mouse model with which to further probe molecular pathways underlying brain and behavioral changes during and after acute illness such as sepsis.
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Affiliation(s)
- David C Consoli
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | | | - Benjamin M Owen
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | - Hakmook Kang
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | | | | | - E Wesley Ely
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | - William P Nobis
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | - Julie A Bastarache
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA
| | - Fiona E Harrison
- Vanderbilt University Medical Center, 7465 MRB4, Nashville, TN 37232, USA.
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Gribkoff VK, Kaczmarek LK. The Difficult Path to the Discovery of Novel Treatments in Psychiatric Disorders. ADVANCES IN NEUROBIOLOGY 2023; 30:255-285. [PMID: 36928854 PMCID: PMC10599454 DOI: 10.1007/978-3-031-21054-9_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
CNS diseases, including psychiatric disorders, represent a significant opportunity for the discovery and development of new drugs and therapeutic treatments with the potential to have a significant impact on human health. CNS diseases, however, present particular challenges to therapeutic discovery efforts, and psychiatric diseases/disorders may be among the most difficult. With specific exceptions such as psychostimulants for ADHD, a large number of psychiatric patients are resistant to existing treatments. In addition, clinicians have no way of knowing which psychiatric patients will respond to which drugs. By definition, psychiatric diagnoses are syndromal in nature; determinations of efficacy are often self-reported, and drug discovery is largely model-based. While such models of psychiatric disease are amenable to screening for new drugs, whether cellular or whole-animal based, they have only modest face validity and, more importantly, predictive validity. Multiple academic, pharmaceutical industry, and government agencies are dedicated to the translation of new findings about the neurobiology of major psychiatric disorders into the discovery and advancement of novel therapies. The collaboration of these agencies provide a pathway for developing new therapeutics. These efforts will be greatly helped by recent advances in understanding the genetic bases of psychiatric disorders, the ongoing search for diagnostic and therapy-responsive biomarkers, and the validation of new animal models.
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Affiliation(s)
- Valentin K Gribkoff
- Department of Internal Medicine, Section on Endocrinology, Yale University School of Medicine, New Haven, CT, USA.
| | - Leonard K Kaczmarek
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA.
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA.
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18
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Hausrat TJ, Vogl C, Neef J, Schweizer M, Yee BK, Strenzke N, Kneussel M. Monoallelic loss of the F-actin-binding protein radixin facilitates startle reactivity and pre-pulse inhibition in mice. Front Cell Dev Biol 2022; 10:987691. [DOI: 10.3389/fcell.2022.987691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/11/2022] [Indexed: 11/29/2022] Open
Abstract
Hearing impairment is one of the most common disorders with a global burden and increasing prevalence in an ever-aging population. Previous research has largely focused on peripheral sensory perception, while the brain circuits of auditory processing and integration remain poorly understood. Mutations in the rdx gene, encoding the F-actin binding protein radixin (Rdx), can induce hearing loss in human patients and homozygous depletion of Rdx causes deafness in mice. However, the precise physiological function of Rdx in hearing and auditory information processing is still ill-defined. Here, we investigated consequences of rdx monoallelic loss in the mouse. Unlike the homozygous (−/−) rdx knockout, which is characterized by the degeneration of actin-based stereocilia and subsequent hearing loss, our analysis of heterozygous (+/−) mutants has revealed a different phenotype. Specifically, monoallelic loss of rdx potentiated the startle reflex in response to acoustic stimulation of increasing intensities, suggesting a gain of function relative to wildtype littermates. The monoallelic loss of the rdx gene also facilitated pre-pulse inhibition of the acoustic startle reflex induced by weak auditory pre-pulse stimuli, indicating a modification to the circuit underlying sensorimotor gating of auditory input. However, the auditory brainstem response (ABR)-based hearing thresholds revealed a mild impairment in peripheral sound perception in rdx (+/-) mice, suggesting minor aberration of stereocilia structural integrity. Taken together, our data suggest a critical role of Rdx in the top-down processing and/or integration of auditory signals, and therefore a novel perspective to uncover further Rdx-mediated mechanisms in central auditory information processing.
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19
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Owada R, Kakuta Y, Yoshida K, Mitsui S, Nakamura K. Conditioned medium from BV2 microglial cells having polyleucine specifically alters startle response in mice. Sci Rep 2022; 12:18718. [PMID: 36333586 PMCID: PMC9636192 DOI: 10.1038/s41598-022-23571-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
Repeat-associated non-AUG translation (RAN translation) is observed in transcripts that are causative for polyglutamine (polyQ) diseases and generates proteins with mono amino acid tracts such as polyalanine (polyA), polyleucine (polyL) and polyserine (polyS) in neurons, astrocytes and microglia. We have previously shown that microglia with aggregated polyQ led to defective differentiation and degeneration of neuron-like cells. However, it has not been determined whether only microglia containing a specific RAN product, but not other RAN products, is harmful in vitro and in vivo. Here we show that polyL-incorporating microglia specifically led to altered startle response in mice. Aggregated polyA, polyS and polyL induced aberrant differentiation of microglia-like BV2 cells. Differentiated PC12 cells treated with conditioned medium (CM) of polyS- and polyL- but not polyA-incorporating microglia-like BV2 cells showed retraction of neurites and loss of branch of neurites. Injection of the polyL-CM, but not polyA-CM and polyS-CM, into the lateral ventricle lowered startle response in mice. Consistently, polyL induced the highest expression of CD68 in BV2 cells. The lowered startle response was replicated in mice given the polyL-CM in the caudal pontine reticular nucleus (PnC), the key region of startle response. Thus, endogenous RAN proteins having polyL derived from polyQ diseases-causative genes in microglia might specifically impair startle response.
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Affiliation(s)
- Ryuji Owada
- grid.256642.10000 0000 9269 4097Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22, Showa-Machi, Maebashi, Gunma 371-8511 Japan
| | - Yohei Kakuta
- grid.256642.10000 0000 9269 4097Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, 3-39-22, Showa-Machi, Maebashi, Gunma 371-8511 Japan
| | - Kosuke Yoshida
- grid.256642.10000 0000 9269 4097Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22, Showa-Machi, Maebashi, Gunma 371-8511 Japan
| | - Shinichi Mitsui
- grid.256642.10000 0000 9269 4097Department of Rehabilitation Sciences, Gunma University Graduate School of Health Sciences, 3-39-22, Showa-Machi, Maebashi, Gunma 371-8511 Japan
| | - Kazuhiro Nakamura
- grid.256642.10000 0000 9269 4097Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22, Showa-Machi, Maebashi, Gunma 371-8511 Japan
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20
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Le Cong D, Sato D, Ikarashi K, Fujimoto T, Ochi G, Yamashiro K. Effect of whole-hand water flow stimulation on the neural balance between excitation and inhibition in the primary somatosensory cortex. Front Hum Neurosci 2022; 16:962936. [DOI: 10.3389/fnhum.2022.962936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
Sustained peripheral somatosensory stimulations, such as high-frequency repetitive somatosensory stimulation (HF-RSS) and vibrated stimulation, are effective in altering the balance between excitation and inhibition in the somatosensory cortex (S1) and motor cortex (M1). A recent study reported that whole-hand water flow (WF) stimulation induced neural disinhibition in the M1. Based on previous results, we hypothesized that whole-hand WF stimulation would lead to neural disinhibition in the S1 because there is a strong neural connection between M1 and S1 and aimed to examine whether whole-hand WF stimulation would change the neural balance between excitation and inhibition in the S1. Nineteen healthy volunteers were studied by measuring excitation and inhibition in the S1 before and after each of the four 15-min interventions. The excitation and inhibition in the S1 were assessed using somatosensory evoked potentials (SEPs) and paired-pulse inhibition (PPI) induced by single- and paired-pulse stimulations, respectively. The four interventions were as follows: control, whole-hand water immersion, whole-hand WF, and HF-RSS. The results showed no significant changes in SEPs and PPI following any intervention. However, changes in PPI with an interstimulus interval (ISI) of 30 ms were significantly correlated with the baseline value before whole-hand WF. Thus, the present findings indicated that the whole-hand WF stimulation had a greater decreased neural inhibition in participants with higher neural inhibition in the S1 at baseline. Considering previous results on M1, the present results possibly show that S1 has lower plasticity than M1 and that the duration (15 min) of each intervention may not have been enough to alter the balance of excitation and inhibition in the S1.
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van der Veen S, Caviness JN, Dreissen YE, Ganos C, Ibrahim A, Koelman JH, Stefani A, Tijssen MA. Myoclonus and other jerky movement disorders. Clin Neurophysiol Pract 2022; 7:285-316. [PMID: 36324989 PMCID: PMC9619152 DOI: 10.1016/j.cnp.2022.09.003] [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] [Received: 04/07/2022] [Revised: 08/29/2022] [Accepted: 09/11/2022] [Indexed: 11/27/2022] Open
Abstract
Myoclonus and other jerky movements form a large heterogeneous group of disorders. Clinical neurophysiology studies can have an important contribution to support diagnosis but also to gain insight in the pathophysiology of different kind of jerks. This review focuses on myoclonus, tics, startle disorders, restless legs syndrome, and periodic leg movements during sleep. Myoclonus is defined as brief, shock-like movements, and subtypes can be classified based the anatomical origin. Both the clinical phenotype and the neurophysiological tests support this classification: cortical, cortical-subcortical, subcortical/non-segmental, segmental, peripheral, and functional jerks. The most important techniques used are polymyography and the combination of electromyography-electroencephalography focused on jerk-locked back-averaging, cortico-muscular coherence, and the Bereitschaftspotential. Clinically, the differential diagnosis of myoclonus includes tics, and this diagnosis is mainly based on the history with premonitory urges and the ability to suppress the tic. Electrophysiological tests are mainly applied in a research setting and include the Bereitschaftspotential, local field potentials, transcranial magnetic stimulation, and pre-pulse inhibition. Jerks due to a startling stimulus form the group of startle syndromes. This group includes disorders with an exaggerated startle reflex, such as hyperekplexia and stiff person syndrome, but also neuropsychiatric and stimulus-induced disorders. For these disorders polymyography combined with a startling stimulus can be useful to determine the pattern of muscle activation and thus the diagnosis. Assessment of symptoms in restless legs syndrome and periodic leg movements during sleep can be performed with different validated scoring criteria with the help of electromyography.
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Affiliation(s)
- Sterre van der Veen
- Department of Neurology, University of Groningen, University Medical Centre Groningen (UMCG), Groningen, The Netherlands,Expertise Centre Movement Disorders Groningen, University Medical Centre Groningen (UMCG), Groningen, The Netherlands
| | - John N. Caviness
- Department of Neurology, Mayo Clinic Arizona, Movement Neurophysiology Laboratory, Scottsdale, AZ, USA
| | - Yasmine E.M. Dreissen
- Department of Neurosurgery, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Christos Ganos
- Movement Disorders and Neuromodulation Unit, Department of Neurology, Charité University Medicine Berlin, Berlin, Germany
| | - Abubaker Ibrahim
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes H.T.M. Koelman
- Department of Neurology and Clinical Neurophysiology, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Ambra Stefani
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Marina A.J. Tijssen
- Department of Neurology, University of Groningen, University Medical Centre Groningen (UMCG), Groningen, The Netherlands,Expertise Centre Movement Disorders Groningen, University Medical Centre Groningen (UMCG), Groningen, The Netherlands,Corresponding author at: Department of Neurology, University of Groningen, University Medical Centre Groningen (UMCG), PO Box 30.001, 9700 RB Groningen, The Netherlands.
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22
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Comprehensive Behavioral Analysis of Opsin 3 (Encephalopsin)-Deficient Mice Identifies Role in Modulation of Acoustic Startle Reflex. eNeuro 2022; 9:ENEURO.0202-22.2022. [PMID: 36041828 PMCID: PMC9532019 DOI: 10.1523/eneuro.0202-22.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/13/2022] [Accepted: 06/23/2022] [Indexed: 12/15/2022] Open
Abstract
Opsin-3 (Opn3, encephalopsin) was the first nonvisual opsin gene discovered in mammals. Since then, several Opn3 functions have been described, and in two cases (adipose tissue, smooth muscle) light sensing activity is implicated. In addition to peripheral tissues, Opn3 is robustly expressed within the central nervous system, for which it derives its name. Despite this expression, no studies have investigated developmental or adult CNS consequences of Opn3 loss-of-function. Here, the behavioral consequences of mice deficient in Opn3 were investigated. Opn3-deficient mice perform comparably to wild-type mice in measures of motor coordination, socialization, anxiety-like behavior, and various aspects of learning and memory. However, Opn3-deficient mice have an attenuated acoustic startle reflex (ASR) relative to littermates. This deficit is not because of changes in hearing sensitivity, although Opn3 was shown to be expressed in auditory and vestibular structures, including cochlear outer hair cells. Interestingly, the ASR was not acutely light-dependent and did not vary between daytime and nighttime trials, despite known functions of Opn3 in photoreception and circadian gene amplitude. Together, these results demonstrate the first role of Opn3 on behavior, although the role of this opsin in the CNS remains largely elusive.
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Proshin AT. Comparative Analysis of Dopaminergic and Cholinergic Mechanisms of Sensory and Sensorimotor Gating in Healthy Individuals and in Patients With Schizophrenia. Front Behav Neurosci 2022; 16:887312. [PMID: 35846783 PMCID: PMC9282644 DOI: 10.3389/fnbeh.2022.887312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Sensory and sensorimotor gating provide the early processing of information under conditions of rapid presentation of multiple stimuli. Gating deficiency is observed in various psychopathologies, in particular, in schizophrenia. However, there is also a significant proportion of people in the general population with low filtration rates who do not show any noticeable cognitive decline. The review article presents a comparative analysis of existing data on the peculiarities of cholinergic and dopaminergic mechanisms associated with lowering gating in healthy individuals and in patients with schizophrenia. The differences in gating mechanisms in cohorts of healthy individuals and those with schizophrenia are discussed.
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Vohra HZ, Saunders JM, Jaster AM, de la Fuente Revenga M, Jimenez J, Fernández-Teruel A, Wolstenholme JT, Beardsley PM, González-Maeso J. Sex-specific effects of psychedelics on prepulse inhibition of startle in 129S6/SvEv mice. Psychopharmacology (Berl) 2022; 239:1649-1664. [PMID: 34345931 PMCID: PMC10103008 DOI: 10.1007/s00213-021-05913-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 06/22/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Prepulse inhibition (PPI) of startle is a sensorimotor gating phenomenon perturbed in a variety of neuropsychiatric conditions. Psychedelics disrupt PPI in rats and humans, but their effects and involvement of the serotonin 5-HT2A receptor (5-HT2AR) in mice remain unexplored. METHODS We tested the effect of the psychedelic 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) (0.5 mg/kg, i.p.) on startle amplitude and %PPI in response to acoustic stimuli under up to four different experimental conditions that included changes in background and stimulus intensity, prepulse and pulse duration, and interstimulus interval in male and female 129S6/SvEv mice. We also evaluated the effect of the 5-HT2AR antagonist M100,907 (1 mg/kg, i.p.) on DOI-induced startle amplitude and %PPI, as well as the effect of the psychedelic LSD (0.24 mg/kg, i.p.) and the dopamine agonists apomorphine (5 mg/kg, s.c.) and SKF-82,958 (0.5 mg/kg, i.p.) in male 129S6/SvEv mice. RESULTS DOI altered startle amplitude with either pulse alone or prepulse + pulse presentations in all PPI conditions, and increased %PPI in three out of four PPI conditions in male mice - an effect that was prevented by M100,907. In female mice, DOI increased %PPI without affecting startle amplitude. %PPI was positively correlated with startle amplitude in males while being negatively correlated in female mice. In male mice, LSD also increased %PPI, although it did not affect startle amplitude, whereas apomorphine and SKF-82,958 induced decreases in %PPI. CONCLUSION Our findings highlight a distinct effect of the psychedelic DOI on PPI in 129S6/SvEv mice, suggesting 5-HT2AR-dependent PPI improvement in a paradigm-dependent and sex-dependent manner.
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Affiliation(s)
- Hiba Z Vohra
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Justin M Saunders
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Alaina M Jaster
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Mario de la Fuente Revenga
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,Virginia Institute of Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Jennifer Jimenez
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Alberto Fernández-Teruel
- Medical Psychology Unit, Department of Psychiatry and Forensic Medicine, Institute of Neurosciences, School of Medicine, Universidad Autónoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Jennifer T Wolstenholme
- Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,VCU Alcohol Research Center, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Patrick M Beardsley
- Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, 23298, USA
| | - Javier González-Maeso
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.
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25
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Calapai F, Cardia L, Calapai G, Di Mauro D, Trimarchi F, Ammendolia I, Mannucci C. Effects of Cannabidiol on Locomotor Activity. Life (Basel) 2022; 12:life12050652. [PMID: 35629320 PMCID: PMC9144881 DOI: 10.3390/life12050652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 12/24/2022] Open
Abstract
Cannabidiol (CBD) is the second cannabinoid, in order of importance after Δ9-tetrahydrocannabinol (THC), from Cannabis sativa. Unlike THC, CBD does not cause psychotomimetic effects, and although these compounds have the same chemical formula, their pharmacological characteristics are not equivalent. Preclinical studies suggest that CBD has anti-inflammatory, analgesic, anxiolytic, antiemetic, anticonvulsant, and antipsychotic properties and influences the sleep–wake cycle. The evaluation of effects on spontaneous motor activity is crucial in experimental pharmacology, and the careful measurement of laboratory animal movement is an established method to recognize the effects of stimulant and depressant drugs. The potential influence of CBD on locomotor activity has been investigated through numerous in vivo experiments. However, there is no clear picture of the impact of CBD on these issues, even though it is administered alone for medical uses and sold with THC as a drug for pain caused by muscle spasms in multiple sclerosis, and it was recently licensed as a drug for severe forms of infantile epilepsy. On this basis, with the aim of developing deeper knowledge of this issue, scientific data on CBD’s influence on locomotor activity are discussed here. We conducted research using PubMed, Scopus, Google Scholar, and a search engine for literature between January 2009 and December 2021 on life sciences and biomedical topics using the keywords “motor activity”, “locomotor activity”, and “locomotion” in combination with “cannabidiol”. In this article, we discuss findings describing the effects on locomotor activity of the CBD precursor cannabidiolic acid and of CBD alone or in combination with THC, together with the effects of CBD on locomotor modifications induced by diseases and on locomotor changes induced by other substances.
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Affiliation(s)
- Fabrizio Calapai
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98122 Messina, Italy;
| | - Luigi Cardia
- Department of Human Pathology of Adult and Childhood “Gaetano Barresi”, University of Messina, Via C. Valeria, 98125 Messina, Italy;
| | - Gioacchino Calapai
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy; (D.D.M.); (F.T.); (I.A.); (C.M.)
- Correspondence:
| | - Debora Di Mauro
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy; (D.D.M.); (F.T.); (I.A.); (C.M.)
| | - Fabio Trimarchi
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy; (D.D.M.); (F.T.); (I.A.); (C.M.)
| | - Ilaria Ammendolia
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy; (D.D.M.); (F.T.); (I.A.); (C.M.)
| | - Carmen Mannucci
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, 98125 Messina, Italy; (D.D.M.); (F.T.); (I.A.); (C.M.)
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26
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Castro AC, Monteiro P. Auditory Dysfunction in Animal Models of Autism Spectrum Disorder. Front Mol Neurosci 2022; 15:845155. [PMID: 35493332 PMCID: PMC9043325 DOI: 10.3389/fnmol.2022.845155] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/17/2022] [Indexed: 11/16/2022] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder mainly characterized by social-communication impairments, repetitive behaviors and altered sensory perception. Auditory hypersensitivity is the most common sensory-perceptual abnormality in ASD, however, its underlying neurobiological mechanisms remain elusive. Consistently with reports in ASD patients, animal models for ASD present sensory-perception alterations, including auditory processing impairments. Here we review the current knowledge regarding auditory dysfunction in rodent models of ASD, exploring both shared and distinct features among them, mechanistic and molecular underpinnings, and potential therapeutic approaches. Overall, auditory dysfunction in ASD models seems to arise from impaired central processing. Depending on the model, impairments may arise at different steps along the auditory pathway, from auditory brainstem up to the auditory cortex. Common defects found across models encompass atypical tonotopicity in different regions of the auditory pathway, temporal and spectral processing impairments and histological differences. Imbalance between excitation and inhibition (E/I imbalance) is one of the most well-supported mechanisms explaining the auditory phenotype in the ASD models studied so far and seems to be linked to alterations in GABAergic signaling. Such E/I imbalance may have a large impact on the development of the auditory pathway, influencing the establishment of connections responsible for normal sound processing.
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Affiliation(s)
- Ana Carolina Castro
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
| | - Patricia Monteiro
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Braga, Portugal
- *Correspondence: Patricia Monteiro,
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27
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Chen L, Liu L, Ge Z, Yang X, Yang P, Li L. Perceptual spatial position induces the attentional enhancement of prepulse inhibition and its neural mechanism. Hear Res 2022; 420:108511. [DOI: 10.1016/j.heares.2022.108511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 04/14/2022] [Accepted: 04/23/2022] [Indexed: 11/04/2022]
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28
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Guo G, Tang J, Shi M, Yang C, Ou H, Chen W. MK212, a 5-hydroxytryptamine 2C receptor agonist, reverses prepulse inhibition deficits in the medial prefrontal cortex and ventral hippocampus. Prog Neuropsychopharmacol Biol Psychiatry 2022; 113:110441. [PMID: 34560172 DOI: 10.1016/j.pnpbp.2021.110441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 08/31/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
Prepulse inhibition (PPI) is disrupted in many neuropsychiatric diseases. Molecules such as 5-HT2C receptor agonists alleviate PPI deficits in rodents; however, the precise mechanisms and critical regions of the brain responsible for the reversal effect of these agonists remain inconclusive. The present study aimed to investigate the areas of the brain critical for the reversal effect of 5-HT2C receptor agonists on PPI deficits in mice. The results showed that systemic administration of the 5-HT2C receptor agonist MK212 did not affect normal PPI behavior, but reversed the PPI deficits induced by the N-methyl d-aspartate receptor antagonist MK801 in mice. In addition, the 5-HT2C receptor antagonist SB242084 had no effect on PPI behavior despite MK801 treatment. Moreover, local infusion of MK212 into the medial prefrontal cortex and ventral hippocampus, excluding the nucleus accumbens or ventral tegmental area, rescued the PPI deficits induced by MK801. These data suggest that the medial prefrontal cortex and ventral hippocampus are critical brain areas responsible for the reversal of 5-HT2C agonists on PPI deficits. The results will contribute to our current knowledge on the molecular and neural mechanisms underlying the antipsychotic effects of 5-HT2C receptor agonists, especially the neural circuits modulated by 5-HT2C receptor activity.
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Affiliation(s)
- Guanlong Guo
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China
| | - Jiaxin Tang
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China
| | - Mengwen Shi
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China
| | - Chengmei Yang
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China
| | - Huaxing Ou
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China
| | - Weihai Chen
- Key Laboratory of Cognition and Personality (Southwest University), Ministry of Education, Chongqing, China; Faculty of Psychology, Southwest University, Chongqing, China.
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29
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Zhang J, Wang M, Wei B, Shi J, Yu T. Research Progress in the Study of Startle Reflex to Disease States. Neuropsychiatr Dis Treat 2022; 18:427-435. [PMID: 35237036 PMCID: PMC8884703 DOI: 10.2147/ndt.s351667] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/06/2022] [Indexed: 11/23/2022] Open
Abstract
The startle reflex is considered a primitive physiological reflex, a defense response that occurs in the organism when the body feels sudden danger and uneasiness, characterized by habituation and sensitization effects, and studies on the startle reflex often deal with pre-pulse inhibition (PPI) and sensorimotor gating. Under physiological conditions, the startle reflex is stable at a certain level, and when the organism is in a pathological state, such as stroke, spinal cord injury, schizophrenia, and other diseases, the reflex undergoes a series of changes, making it closely related to the progress of disease. This paper summarizes the startle reflex in physiological and pathological states by reviewing the databases of PubMed, Web of Science, Cochrane Library, EMBASE, China Biology Medicine, China National Knowledge Infrastructure, VIP Database for Chinese Technical Periodical, Wanfang Data, and identifies and analyzes the startle reflex and excessive startle reaction disorder.
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Affiliation(s)
- Junfeng Zhang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300380, People's Republic of China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300380, People's Republic of China
| | - Meng Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300380, People's Republic of China
| | - Baoyu Wei
- State Key Laboratory of Component-based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, People's Republic of China
| | - Jiangwei Shi
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300380, People's Republic of China
| | - Tao Yu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, 300380, People's Republic of China
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30
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Zahler SH, Taylor DE, Wong JY, Adams JM, Feinberg EH. Superior colliculus drives stimulus-evoked directionally biased saccades and attempted head movements in head-fixed mice. eLife 2021; 10:73081. [PMID: 34970968 PMCID: PMC8747496 DOI: 10.7554/elife.73081] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 12/27/2021] [Indexed: 11/13/2022] Open
Abstract
Animals investigate their environments by directing their gaze towards salient stimuli. In the prevailing view, mouse gaze shifts entail head rotations followed by brainstem-mediated eye movements, including saccades to reset the eyes. These 'recentering' saccades are attributed to head movement-related vestibular cues. However, microstimulating mouse superior colliculus (SC) elicits directed head and eye movements resembling SC-dependent sensory-guided gaze shifts in other species, suggesting that mouse gaze shifts may be more flexible than has been recognized. We investigated this possibility by tracking eye and attempted head movements in a head-fixed preparation that eliminates head movement-related sensory cues. We found tactile stimuli evoke directionally biased saccades coincident with attempted head rotations. Differences in saccade endpoints across stimuli are associated with distinct stimulus-dependent relationships between initial eye position and saccade direction and amplitude. Optogenetic perturbations revealed SC drives these gaze shifts. Thus, head-fixed mice make sensory-guided, SC-dependent gaze shifts involving coincident, directionally biased saccades and attempted head movements. Our findings uncover flexibility in mouse gaze shifts and provide a foundation for studying head-eye coupling.
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Affiliation(s)
- Sebastian H Zahler
- Department of Anatomy, University of California, San Francisco, San Francisco, United States
| | - David E Taylor
- Department of Anatomy, University of California, San Francisco, San Francisco, United States
| | - Joey Y Wong
- Department of Anatomy, University of California, San Francisco, San Francisco, United States
| | - Julia M Adams
- Department of Anatomy, University of California, San Francisco, San Francisco, United States
| | - Evan H Feinberg
- Department of Anatomy, University of California, San Francisco, San Francisco, United States
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31
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Jaillard C, Ouechtati F, Clérin E, Millet-Puel G, Corsi M, Aït-Ali N, Blond F, Chevy Q, Gales L, Farinelli M, Dalkara D, Sahel JA, Portais JC, Poncer JC, Léveillard T. The metabolic signaling of the nucleoredoxin-like 2 gene supports brain function. Redox Biol 2021; 48:102198. [PMID: 34856436 PMCID: PMC8640531 DOI: 10.1016/j.redox.2021.102198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 11/22/2021] [Indexed: 01/04/2023] Open
Abstract
The nucleoredoxin gene NXNL2 encodes for two products through alternative splicing, rod-derived cone viability factor-2 (RdCVF2) that mediates neuronal survival and the thioredoxin-related protein (RdCVF2L), an enzyme that regulates the phosphorylation of TAU. To investigate the link between NXNL2 and tauopathies, we studied the Nxnl2 knockout mouse (Nxnl2-/-). We established the expression pattern of the Nxnl2 gene in the brain using a Nxnl2 reporter mouse line, and characterized the behavior of the Nxnl2-/- mouse at 2 months of age. Additionally, long term potentiation and metabolomic from hippocampal specimens were collected at 2 months of age. We studied TAU oligomerization, phosphorylation and aggregation in Nxnl2-/- brain at 18 months of age. Finally, newborn Nxnl2-/- mice were treated with adeno-associated viral vectors encoding for RdCVF2, RdCVF2L or both and measured the effect of this therapy on long-term potential, glucose metabolism and late-onset tauopathy. Nxnl2-/- mice at 2 months of age showed severe behavioral deficiency in fear, pain sensitivity, coordination, learning and memory. The Nxnl2-/- also showed deficits in long-term potentiation, demonstrating that the Nxnl2 gene is involved in regulating brain functions. Dual delivery of RdCVF2 and RdCVF2L in newborn Nxnl2-/- mice fully correct long-term potentiation through their synergistic action. The expression pattern of the Nxnl2 gene in the brain shows a predominant expression in circumventricular organs, such as the area postrema. Glucose metabolism of the hippocampus of Nxnl2-/- mice at 2 months of age was reduced, and was not corrected by gene therapy. At 18-month-old Nxnl2-/- mice showed brain stigmas of tauopathy, such as oligomerization, phosphorylation and aggregation of TAU. This late-onset tauopathy can be prevented, albeit with modest efficacy, by recombinant AAVs administrated to newborn mice. The Nxnl2-/- mice have memory dysfunction at 2-months that resembles mild-cognitive impairment and at 18-months exhibit tauopathy, resembling to the progression of Alzheimer's disease. We propose the Nxnl2-/- mouse is a model to study multistage aged related neurodegenerative diseases. The NXNL2 metabolic and redox signaling is a new area of therapeutic research in neurodegenerative diseases.
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Affiliation(s)
- Céline Jaillard
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Farah Ouechtati
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Emmanuelle Clérin
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | | | - Mariangela Corsi
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Najate Aït-Ali
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Frédéric Blond
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Quentin Chevy
- Sorbonne Université, INSERM, CNRS, Institut du Fer à Moulin, F-75005, Paris, France
| | - Lara Gales
- MetaToul-MetaboHUB, National Infrastructure of Metabolomics & Fluxomics, 31077, Toulouse, France
| | - Mélissa Farinelli
- E-Phy-Science, Bioparc de Sophia Antipolis, 2400 route des Colles, 06410, Biot, France
| | - Deniz Dalkara
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - José-Alain Sahel
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France
| | - Jean-Charles Portais
- MetaToul-MetaboHUB, National Infrastructure of Metabolomics & Fluxomics, 31077, Toulouse, France
| | | | - Thierry Léveillard
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, F-7501b, Paris, France.
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32
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Gattie M, Lieven EVM, Kluk K. Weak Vestibular Response in Persistent Developmental Stuttering. Front Integr Neurosci 2021; 15:662127. [PMID: 34594189 PMCID: PMC8477904 DOI: 10.3389/fnint.2021.662127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 06/14/2021] [Indexed: 11/24/2022] Open
Abstract
Vibrational energy created at the larynx during speech will deflect vestibular mechanoreceptors in humans (Todd et al., 2008; Curthoys, 2017; Curthoys et al., 2019). Vestibular-evoked myogenic potential (VEMP), an indirect measure of vestibular function, was assessed in 15 participants who stutter, with a non-stutter control group of 15 participants paired on age and sex. VEMP amplitude was 8.5 dB smaller in the stutter group than the non-stutter group (p = 0.035, 95% CI [−0.9, −16.1], t = −2.1, d = −0.8, conditional R2 = 0.88). The finding is subclinical as regards gravitoinertial function, and is interpreted with regard to speech-motor function in stuttering. There is overlap between brain areas receiving vestibular innervation, and brain areas identified as important in studies of persistent developmental stuttering. These include the auditory brainstem, cerebellar vermis, and the temporo-parietal junction. The finding supports the disruptive rhythm hypothesis (Howell et al., 1983; Howell, 2004) in which sensory inputs additional to own speech audition are fluency-enhancing when they coordinate with ongoing speech.
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Affiliation(s)
- Max Gattie
- Manchester Centre for Audiology and Deafness (ManCAD), The University of Manchester, Manchester, United Kingdom
| | - Elena V M Lieven
- Child Study Centre, The University of Manchester, Manchester, United Kingdom.,The ESRC International Centre for Language and Communicative Development (LuCiD), The University of Manchester, Manchester, United Kingdom
| | - Karolina Kluk
- Manchester Centre for Audiology and Deafness (ManCAD), The University of Manchester, Manchester, United Kingdom
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33
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Longenecker RJ, Gu R, Homan J, Kil J. Development of Tinnitus and Hyperacusis in a Mouse Model of Tobramycin Cochleotoxicity. Front Mol Neurosci 2021; 14:715952. [PMID: 34539342 PMCID: PMC8440845 DOI: 10.3389/fnmol.2021.715952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/10/2021] [Indexed: 11/13/2022] Open
Abstract
Aminoglycosides (AG) antibiotics are a common treatment for recurrent infections in cystic fibrosis (CF) patients. AGs are highly ototoxic, resulting in a range of auditory dysfunctions. It was recently shown that the acoustic startle reflex (ASR) can assess behavioral evidence of hyperacusis and tinnitus in an amikacin cochleotoxicity mouse model. The goal of this study was to establish if tobramycin treatment led to similar changes in ASR behavior and to establish whether ebselen can prevent the development of these maladaptive neuroplastic symptoms. CBA/Ca mice were divided into three groups: Group 1 served as a control and did not receive tobramycin or ebselen, Group 2 received tobramycin (200 mg/kg/s.c.) and the vehicle (DMSO/saline/i.p.) daily for 14 continuous days, and Group 3 received the same dose/schedule of tobramycin as Group 2 and ebselen at (20 mg/kg/i.p.). Auditory brainstem response (ABR) and ASR hearing assessments were collected at baseline and 2, 6, 10, 14, and 18 weeks from the start of treatment. ASR tests included input/output (I/O) functions which assess general hearing and hyperacusis, and Gap-induced prepulse inhibition of the acoustic startle (GPIAS) to assess tinnitus. At 18 weeks, histologic analysis showed predominantly normal appearing hair cells and spiral ganglion neuron (SGN) synapses. Following 14 days of tobramycin injections, 16 kHz thresholds increased from baseline and fluctuated over the 18-week recovery period. I/O functions revealed exaggerated startle response magnitudes in 50% of mice over the same period. Gap detection deficits, representing behavioral evidence of tinnitus, were observed in a smaller subset (36%) of animals. Interestingly, increases in ABR wave III/wave I amplitude ratios were observed. These tobramycin data corroborate previous findings that AGs can result in hearing dysfunctions. We show that a 14-day course of tobramycin treatment can cause similar levels of hearing loss and tinnitus, when compared to a 14-day course of amikacin, but less hyperacusis. Evidence suggests that tinnitus and hyperacusis might be common side effects of AG antibiotics.
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Affiliation(s)
| | - Rende Gu
- Sound Pharmaceuticals Inc., Seattle, WA, United States
| | | | - Jonathan Kil
- Sound Pharmaceuticals Inc., Seattle, WA, United States
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34
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Möhrle D, Wang W, Whitehead SN, Schmid S. GABA B Receptor Agonist R-Baclofen Reverses Altered Auditory Reactivity and Filtering in the Cntnap2 Knock-Out Rat. Front Integr Neurosci 2021; 15:710593. [PMID: 34489651 PMCID: PMC8417788 DOI: 10.3389/fnint.2021.710593] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 07/27/2021] [Indexed: 12/23/2022] Open
Abstract
Altered sensory information processing, and auditory processing, in particular, is a common impairment in individuals with autism spectrum disorder (ASD). One prominent hypothesis for the etiology of ASD is an imbalance between neuronal excitation and inhibition. The selective GABAB receptor agonist R-Baclofen has been shown previously to improve social deficits and repetitive behaviors in several mouse models for neurodevelopmental disorders including ASD, and its formulation Arbaclofen has been shown to ameliorate social avoidance symptoms in some individuals with ASD. The present study investigated whether R-Baclofen can remediate ASD-related altered sensory processing reliant on excitation/inhibition imbalance in the auditory brainstem. To assess a possible excitation/inhibition imbalance in the startle-mediating brainstem underlying ASD-like auditory-evoked behaviors, we detected and quantified brain amino acid levels in the nucleus reticularis pontis caudalis (PnC) of rats with a homozygous loss-of-function mutation in the ASD-linked gene Contactin-associated protein-like 2 (Cntnap2) and their wildtype (WT) littermates using Matrix-Assisted Laser Desorption Ionization Mass Spectrometry (MALDI MS). Abnormal behavioral read-outs of brainstem auditory signaling in Cntnap2 KO rats were accompanied by increased levels of GABA, glutamate, and glutamine in the PnC. We then compared the effect of R-Baclofen on behavioral read-outs of brainstem auditory signaling in Cntnap2 KO and WT rats. Auditory reactivity, sensory filtering, and sensorimotor gating were tested in form of acoustic startle response input-output functions, short-term habituation, and prepulse inhibition before and after acute administration of R-Baclofen (0.75, 1.5, and 3 mg/kg). Systemic R-Baclofen treatment improved disruptions in sensory filtering in Cntnap2 KO rats and suppressed exaggerated auditory startle responses, in particular to moderately loud sounds. Lower ASR thresholds in Cntnap2 KO rats were increased in a dose-dependent fashion, with the two higher doses bringing thresholds close to controls, whereas shorter ASR peak latencies at the threshold were further exacerbated. Impaired prepulse inhibition increased across various acoustic prepulse conditions after administration of R-Baclofen in Cntnap2 KO rats, whereas R-Baclofen did not affect prepulse inhibition in WT rats. Our findings suggest that GABAB receptor agonists may be useful for pharmacologically targeting multiple aspects of sensory processing disruptions involving neuronal excitation/inhibition imbalances in ASD.
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Affiliation(s)
- Dorit Möhrle
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Wenxuan Wang
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Shawn N Whitehead
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
| | - Susanne Schmid
- Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada
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Saengmearnuparp T, Lojanapiwat B, Chattipakorn N, Chattipakorn S. The connection of 5-alpha reductase inhibitors to the development of depression. Biomed Pharmacother 2021; 143:112100. [PMID: 34479019 DOI: 10.1016/j.biopha.2021.112100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
Recent literature connects 5-alpha reductase inhibitors (5-ARIs) with neuropsychiatric adverse effects. Several clinical studies have indicated that former 5-ARIs users had a higher incidence of depressive symptoms and neuropsychiatric side effects than non-users. However, the underlying mechanisms involved in the depression in former 5-ARIs patients, a condition known as "post finasteride syndrome (PFS)", are not thoroughly understood. This review aims to summarize and discuss the association between 5-ARIs and depression as well as possible mechanisms. We used PubMed search terms including "depression", "depressive symptoms", "MDD", "anxiety", or "suicidal idea", and "5-alpha reductase inhibitors", "finasteride", "dutasteride", "5-ARIs". All relevant articles from in vivo and clinical studies from 2002 to 2021 were carefully reviewed. Any contradictory findings were included and debated. The potential mechanisms that link 5-ARIs and depression include alteration in neuroactive steroids, dopaminergic dysfunction, reduced hippocampal neurogenesis, increased neuroinflammation, alteration of the HPA axis, and epigenetic modifications. From this review, we hope to provide information for future studies based on animal experiments, and potential therapeutic strategies for depressive patients with PFS.
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Affiliation(s)
| | - Bannakij Lojanapiwat
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Siriporn Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand.
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Lei M, Ding Y. Interaural delay modulates the prepulse inhibition of the startle reflex induced by binaural gap in humans. JASA EXPRESS LETTERS 2021; 1:064401. [PMID: 36154372 DOI: 10.1121/10.0005110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
This study used prepulse inhibition (PPI) of the acoustic startle reflex as a physiological measure to determine the sensitivity to a break in interaural correlation (BIC) in binaural gap detection and compared this physiological measure with the traditional behavioral measure. Results show that BIC could be used as a prepulse to induce PPI at different interaural delays. Furthermore, the PPIs induced by BIC at an interaural delay of 4 ms, but not 0, 2, or 8 ms, were correlated with the BIC delay threshold. These findings suggest that the BIC-induced PPI paradigm may serve as an objective measure of binaural gap detection.
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Affiliation(s)
- Ming Lei
- Laboratory of Artificial Intelligence and Cognition, School of Tourism Sciences, Beijing International Studies University, Beijing 100024, China
| | - Yu Ding
- School of Sports, Tsinghua University, Beijing 100084 China ,
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Central Auditory Plasticity from Molecules to Behavior. Brain Sci 2021; 11:brainsci11050573. [PMID: 33946844 PMCID: PMC8145046 DOI: 10.3390/brainsci11050573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 04/25/2021] [Indexed: 11/21/2022] Open
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Gil-Miravet I, Fuertes-Saiz A, Benito A, Almodóvar I, Ochoa E, Haro G. Prepulse Inhibition in Cocaine Addiction and Dual Pathologies. Brain Sci 2021; 11:brainsci11020269. [PMID: 33672693 PMCID: PMC7924364 DOI: 10.3390/brainsci11020269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/07/2021] [Accepted: 02/16/2021] [Indexed: 12/14/2022] Open
Abstract
Cocaine addiction is frequently associated with different psychiatric disorders, especially schizophrenia and antisocial personality disorder. A small number of studies have used prepulse inhibition (PPI) as a discriminating factor between these disorders. This work evaluated PPI and the phenotype of patients with cocaine-related disorder (CRD) who presented a dual diagnosis of schizophrenia or antisocial personality disorder. A total of 74 men aged 18–60 years were recruited for this research. The sample was divided into four groups: CRD (n = 14), CRD and schizophrenia (n = 21), CRD and antisocial personality disorder (n = 16), and a control group (n = 23). We evaluated the PPI and other possible vulnerability factors in these patients by using different assessment scales. PPI was higher in the CRD group at 30 ms (F(3, 64) = 2.972, p = 0.038). Three discriminant functions were obtained which allowed us to use the overall Hare Psychopathy Checklist Revised score, reward sensitivity, and PPI at 30 ms to predict inclusion of these patients in the different groups with a success rate of 79.7% (42.9% for CRD, 76.2% for CRD and schizophrenia, 100% for CRD and antisocial personality disorder, and 91.3% in the control group). Despite the differences we observed in PPI, this factor is of little use for discriminating between the different diagnostic groups and it acts more as a non-specific endophenotype in certain mental disorders, such as in patients with a dual diagnosis.
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Affiliation(s)
- Isis Gil-Miravet
- TXP Research Group, Universidad Cardenal Herrera-CEU, CEU Universities, 12006 Castellón, Spain; (I.G.-M.); (A.B.); (I.A.); (G.H.)
- Predepartamental Unit of Medicine, Universitat Jaume I, 12071 Castellón, Spain
| | - Alejandro Fuertes-Saiz
- TXP Research Group, Universidad Cardenal Herrera-CEU, CEU Universities, 12006 Castellón, Spain; (I.G.-M.); (A.B.); (I.A.); (G.H.)
- Psychiatry Department, Consorcio Hospitalario Provincial de Castellón, 12002 Castellón, Spain
- Correspondence:
| | - Ana Benito
- TXP Research Group, Universidad Cardenal Herrera-CEU, CEU Universities, 12006 Castellón, Spain; (I.G.-M.); (A.B.); (I.A.); (G.H.)
- Torrente Mental Health Centre, Hospital General Universitario, 46014 Valencia, Spain
| | - Isabel Almodóvar
- TXP Research Group, Universidad Cardenal Herrera-CEU, CEU Universities, 12006 Castellón, Spain; (I.G.-M.); (A.B.); (I.A.); (G.H.)
| | - Enrique Ochoa
- Molecular Biopathology Department, Consorcio Hospitalario Provincial de Castellón, 12002 Castellón, Spain;
| | - Gonzalo Haro
- TXP Research Group, Universidad Cardenal Herrera-CEU, CEU Universities, 12006 Castellón, Spain; (I.G.-M.); (A.B.); (I.A.); (G.H.)
- Psychiatry Department, Consorcio Hospitalario Provincial de Castellón, 12002 Castellón, Spain
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Engstrom M, Liu G, Santana-Gonzalez C, Teoh JY, Harms M, Koy K, Quevedo K. The impact of child abuse on the neurobiology of self-processing in depressed adolescents. Neurobiol Stress 2021; 14:100310. [PMID: 33681431 PMCID: PMC7910521 DOI: 10.1016/j.ynstr.2021.100310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 11/16/2022] Open
Abstract
Child abuse is linked to lifetime psychopathology including abnormal self-processing. Given self-processing maturation in adolescence, we tested duration, presence, and abuse accumulation's impact upon self-processing neurobiology among depressed youth with (N = 54) and without an abuse history (N = 40). Youth evaluated positive and negative self-descriptors across four points of view in the scanner. Regression analyses showed that longer abuse duration (in days) was associated with lower activity in inferior temporal (e.g. insula, fusiform & parahippocampus), striatal, cerebellar and midbrain structures when processing negative self-descriptors with the least activity in youth exposed to 6+ abuse years. Abuse presence vs. absence was linked to higher neural activity. However, youth exposed to a single abuse instance to 3 years of abuse might drive that relative neural hyperactivity. Results support: 1) the toxic stress model of blunted overall neuro-reactivity underpinning emotion, sensorimotor gating, and social cognition during negative stimuli as an adaptation to pervasively toxic environments and 2) the differential impact of acute versus chronic stress upon neurophysiological indices. Finally, child abuse duration might impact these ancillary and higher socioemotional processes differently among depressed youth primarily for negative but not positive self-processing.
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Affiliation(s)
- Maggie Engstrom
- Department of Psychiatry at the University of Minnesota (U of M), USA
| | - Guanmin Liu
- Department of Psychiatry at the University of Minnesota (U of M), USA
| | | | - Jia Yuan Teoh
- Department of Psychiatry at the University of Minnesota (U of M), USA
| | - Madeline Harms
- Department of Psychiatry at the University of Minnesota (U of M), USA
| | - Kiry Koy
- Department of Psychiatry at the University of Minnesota (U of M), USA
| | - Karina Quevedo
- Department of Psychiatry at the University of Minnesota (U of M), USA
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Zakharova EI, Storozheva ZI, Proshin AT, Monakov MY, Dudchenko AM. Opposite Pathways of Cholinergic Mechanisms of Hypoxic Preconditioning in the Hippocampus: Participation of Nicotinic α7 Receptors and Their Association with the Baseline Level of Startle Prepulse Inhibition. Brain Sci 2020; 11:brainsci11010012. [PMID: 33374246 PMCID: PMC7824639 DOI: 10.3390/brainsci11010012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 12/14/2022] Open
Abstract
(1) Background. A one-time moderate hypobaric hypoxia (HBH) has a preconditioning effect whose neuronal mechanisms are not studied well. Previously, we found a stable correlation between the HBH efficiency and acoustic startle prepulse inhibition (PPI). This makes it possible to predict the individual efficiency of HBH in animals and to study its potential adaptive mechanisms. We revealed a bi-directional action of nicotinic α7 receptor agonist PNU-282987 and its solvent dimethyl sulfoxide on HBH efficiency with the level of PPI > or < 40%. (2) The aim of the present study was to estimate cholinergic mechanisms of HBH effects in different brain regions. (3) Methods: in rats pretested for PPI, we evaluated the activity of synaptic membrane-bound and water-soluble choline acetyltransferase (ChAT) in the sub-fractions of ‘light’ and ‘heavy’ synaptosomes of the neocortex, hippocampus and caudal brainstem in the intact brain and after HBH. We tested the dose-dependent influence of PNU-282987 on the HBH efficiency. (4) Results: PPI level and ChAT activity correlated negatively in all brain structures of the intact animals, so that the values of the latter were higher in rats with PPI < 40% compared to those with PPI > 40%. After HBH, this ChAT activity difference was leveled in the neocortex and caudal brainstem, while for membrane-bound ChAT in the ‘light’ synaptosomal fraction of hippocampus, it was reversed to the opposite. In addition, a pharmacological study revealed that PNU-282987 in all used doses and its solvent displayed corresponding opposite effects on HBH efficiency in rats with different levels of PPI. (5) Conclusion: We substantiate that in rats with low and high PPI two opposite hippocampal cholinergic mechanisms are involved in hypoxic preconditioning, and both are implemented by forebrain projections via nicotinic α7 receptors. Possible causes of association between general protective adaptation, HBH, PPI, forebrain cholinergic system and hippocampus are discussed.
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Affiliation(s)
- Elena I. Zakharova
- Laboratory of General Pathology of Cardiorespiratory System, Institute of General Pathology and Pathophysiology, Baltiyskaya, 8, 125315 Moscow, Russia; (M.Y.M.); (A.M.D.)
- Correspondence: ; Tel.: +7-9199668657; Fax: +7-4991511756
| | - Zinaida I. Storozheva
- Laboratory of Clinical Neurophysiology, Serbsky’ National Medical Research Center for Psychiatry and Narcology, Kropotkinsky per., 23, 111395 Moscow, Russia;
| | - Andrey T. Proshin
- Laboratory of Functional Neurochemistry, P.K. Anokhin Institute of Normal Physiology, Baltiyskaya, 8, 125315 Moscow, Russia;
| | - Mikhail Yu. Monakov
- Laboratory of General Pathology of Cardiorespiratory System, Institute of General Pathology and Pathophysiology, Baltiyskaya, 8, 125315 Moscow, Russia; (M.Y.M.); (A.M.D.)
| | - Alexander M. Dudchenko
- Laboratory of General Pathology of Cardiorespiratory System, Institute of General Pathology and Pathophysiology, Baltiyskaya, 8, 125315 Moscow, Russia; (M.Y.M.); (A.M.D.)
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