1
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O'Geen H, Beitnere U, Garcia MS, Adhikari A, Cameron DL, Fenton TA, Copping NA, Deng P, Lock S, Halmai JANM, Villegas IJ, Liu J, Wang D, Fink KD, Silverman JL, Segal DJ. Transcriptional reprogramming restores UBE3A brain-wide and rescues behavioral phenotypes in an Angelman syndrome mouse model. Mol Ther 2023; 31:1088-1105. [PMID: 36641623 PMCID: PMC10124086 DOI: 10.1016/j.ymthe.2023.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/19/2022] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Angelman syndrome (AS) is a neurogenetic disorder caused by the loss of ubiquitin ligase E3A (UBE3A) gene expression in the brain. The UBE3A gene is paternally imprinted in brain neurons. Clinical features of AS are primarily due to the loss of maternally expressed UBE3A in the brain. A healthy copy of paternal UBE3A is present in the brain but is silenced by a long non-coding antisense transcript (UBE3A-ATS). Here, we demonstrate that an artificial transcription factor (ATF-S1K) can silence Ube3a-ATS in an adult mouse model of Angelman syndrome (AS) and restore endogenous physiological expression of paternal Ube3a. A single injection of adeno-associated virus (AAV) expressing ATF-S1K (AAV-S1K) into the tail vein enabled whole-brain transduction and restored UBE3A protein in neurons to ∼25% of wild-type protein. The ATF-S1K treatment was highly specific to the target site with no detectable inflammatory response 5 weeks after AAV-S1K administration. AAV-S1K treatment of AS mice showed behavioral rescue in exploratory locomotion, a task involving gross and fine motor abilities, similar to low ambulation and velocity in AS patients. The specificity and tolerability of a single injection of AAV-S1K therapy for AS demonstrate the use of ATFs as a promising translational approach for AS.
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Affiliation(s)
| | | | | | - Anna Adhikari
- MIND Institute, UC Davis Health System, Sacramento, CA, USA; Department of Psychiatry and Behavioral Sciences, UC Davis Health System, Sacramento, CA, USA
| | - David L Cameron
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Timothy A Fenton
- MIND Institute, UC Davis Health System, Sacramento, CA, USA; Department of Psychiatry and Behavioral Sciences, UC Davis Health System, Sacramento, CA, USA
| | - Nycole A Copping
- MIND Institute, UC Davis Health System, Sacramento, CA, USA; Department of Psychiatry and Behavioral Sciences, UC Davis Health System, Sacramento, CA, USA
| | - Peter Deng
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Samantha Lock
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Julian A N M Halmai
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Isaac J Villegas
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Jiajian Liu
- Genome Editing and Novel Modalities (GENM), MilliporeSigma, St. Louis, MO, USA
| | - Danhui Wang
- Genome Editing and Novel Modalities (GENM), MilliporeSigma, St. Louis, MO, USA
| | - Kyle D Fink
- Neurology Department, Stem Cell Program and Gene Therapy Center, UC Davis Health System, Sacramento, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA
| | - Jill L Silverman
- MIND Institute, UC Davis Health System, Sacramento, CA, USA; Department of Psychiatry and Behavioral Sciences, UC Davis Health System, Sacramento, CA, USA
| | - David J Segal
- Genome Center, UC Davis, Davis, CA, USA; Department of Biochemistry and Molecular Medicine, UC Davis, Davis, CA, USA; MIND Institute, UC Davis Health System, Sacramento, CA, USA.
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2
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Jiang P, Zhou L, Du Z, Zhao L, Tang Y, Fei X, Wang L, Li D, Li S, Yang H, Fan X, Liao H. Icariin alleviates autistic-like behavior, hippocampal inflammation and vGlut1 expression in adult BTBR mice. Behav Brain Res 2023; 445:114384. [PMID: 36889463 DOI: 10.1016/j.bbr.2023.114384] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/23/2023] [Accepted: 03/05/2023] [Indexed: 03/08/2023]
Abstract
Autism spectrum disorder (ASD) is a complicated, heterogeneous disorder characterized by social interaction deficits and repetitive stereotypical behaviors. Neuroinflammation and synaptic protein dysregulation have been implicated in ASD pathogenesis. Icariin (ICA) has proven to exert neuroprotective function through anti-inflammatory function. Therefore, this study aimed to clarify the effects of ICA treatment on autism-like behavioral deficits in BTBR mice and whether these changes were related to modifications in the hippocampal inflammation and the balance of excitatory/inhibitory synapses. ICA supplementation (80 mg/kg, once daily for ten days, i.g.) ameliorated social deficits, repetitive stereotypical behaviors, and short-term memory deficit without affecting locomotor activity or anxiety-like behaviors of BTBR mice. Furthermore, ICA treatment inhibited neuroinflammation via decreasing microglia number and the soma size in the CA1 region of the hippocampus, as well as the protein levels of proinflammatory cytokines in the hippocampus of BTBR mice. In addition, ICA treatment also rescued excitatory-inhibitory synaptic protein imbalance by inhibiting the increased vGlut1 level without affecting the vGAT level in the BTBR mouse hippocampus. Collectively, the observed results indicate that ICA treatment alleviates ASD-like features, mitigates disturbed balance of excitatory-inhibitory synaptic protein, and inhibits hippocampal inflammation in BTBR mice, and may represent a novel promising drug for ASD treatment.
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Affiliation(s)
- Peiyan Jiang
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China; Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China
| | - Lianyu Zhou
- Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China; Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Zhulin Du
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Linyang Zhao
- Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China
| | - Yexi Tang
- Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Xinghang Fei
- Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China; Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Lian Wang
- Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China
| | - Dabing Li
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan, China
| | - Song Li
- Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China; Chongqing Institute for Brain and Intelligence, Guangyang Bay Laboratory, Chongqing, China
| | - Hui Yang
- Department of Neurosurgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China; Chongqing Institute for Brain and Intelligence, Guangyang Bay Laboratory, Chongqing, China.
| | - Xiaotang Fan
- Department of Military Cognitive Psychology, School of Psychology, Army Medical University, Chongqing 400038, China.
| | - Huiling Liao
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, Sichuan, China.
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3
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Lynch CMK, Cowan CSM, Bastiaanssen TFS, Moloney GM, Theune N, van de Wouw M, Florensa Zanuy E, Ventura-Silva AP, Codagnone MG, Villalobos-Manríquez F, Segalla M, Koc F, Stanton C, Ross P, Dinan TG, Clarke G, Cryan JF. Critical windows of early-life microbiota disruption on behaviour, neuroimmune function, and neurodevelopment. Brain Behav Immun 2023; 108:309-327. [PMID: 36535610 DOI: 10.1016/j.bbi.2022.12.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 11/11/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Numerous studies have emphasised the importance of the gut microbiota during early life and its role in modulating neurodevelopment and behaviour. Epidemiological studies have shown that early-life antibiotic exposure can increase an individual's risk of developing immune and metabolic diseases. Moreover, preclinical studies have shown that long-term antibiotic-induced microbial disruption in early life can have enduring effects on physiology, brain function and behaviour. However, these studies have not investigated the impact of targeted antibiotic-induced microbiota depletion during critical developmental windows and how this may be related to neurodevelopmental outcomes. Here, we addressed this gap by administering a broad-spectrum oral antibiotic cocktail (ampicillin, gentamicin, vancomycin, and imipenem) to mice during one of three putative critical windows: the postnatal (PN; P2-9), pre-weaning (PreWean; P12-18), or post-weaning (Wean; P21-27) developmental periods and assessed the effects on physiology and behaviour in later life. Our results demonstrate that targeted microbiota disruption during early life has enduring effects into adolescence on the structure and function of the caecal microbiome, especially for antibiotic exposure during the weaning period. Further, we show that microbial disruption in early life selectively alters circulating immune cells and modifies neurophysiology in adolescence, including altered myelin-related gene expression in the prefrontal cortex and altered microglial morphology in the basolateral amygdala. We also observed sex and time-dependent effects of microbiota depletion on anxiety-related behavioural outcomes in adolescence and adulthood. Antibiotic-induced microbial disruption had limited and subtle effects on social behaviour and did not have any significant effects on depressive-like behaviour, short-term working, or recognition memory. Overall, this study highlights the importance of the gut microbiota during critical windows of development and the subtle but long-term effects that microbiota-targeted perturbations can have on brain physiology and behaviour.
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Affiliation(s)
- Caoimhe M K Lynch
- APC Microbiome Ireland, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
| | | | - Thomaz F S Bastiaanssen
- APC Microbiome Ireland, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
| | - Gerard M Moloney
- Department of Anatomy & Neuroscience, University College Cork, Ireland
| | - Nigel Theune
- APC Microbiome Ireland, University College Cork, Ireland
| | | | | | | | | | | | | | - Fatma Koc
- APC Microbiome Ireland, University College Cork, Ireland; Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Catherine Stanton
- APC Microbiome Ireland, University College Cork, Ireland; Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Paul Ross
- APC Microbiome Ireland, University College Cork, Ireland; Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Timothy G Dinan
- APC Microbiome Ireland, University College Cork, Ireland; Department of Psychiatry & Neurobehavioural Sciences, University College Cork, Ireland
| | - Gerard Clarke
- APC Microbiome Ireland, University College Cork, Ireland; Department of Psychiatry & Neurobehavioural Sciences, University College Cork, Ireland
| | - John F Cryan
- APC Microbiome Ireland, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland.
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Cao C, Li Q, Chen Y, Zou M, Sun C, Li X, Wu L. Untargeted Metabolomic Analysis Reveals the Metabolic Disturbances and Exacerbation of Oxidative Stress in the Cerebral Cortex of a BTBR Mouse Model of Autism. J Mol Neurosci 2023; 73:15-27. [PMID: 36574152 DOI: 10.1007/s12031-022-02096-6] [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: 09/14/2022] [Accepted: 12/09/2022] [Indexed: 12/28/2022]
Abstract
The etiology and pathology of autism spectrum disorders (ASDs) are still poorly understood, which largely limit the treatment and diagnosis of ASDs. Emerging evidence supports that abnormal metabolites in the cerebral cortex of a BTBR mouse model of autism are involved in the pathogenesis of autism. However, systematic study on global metabolites in the cerebral cortex of BTBR mice has not been conducted. The current study aims to characterize metabolic changes in the cerebral cortex of BTBR mice by using an untargeted metabolomic approach based on UPLC-Q-TOF/MS. C57BL/6 J mice were used as a control group. A total of 14 differential metabolites were identified. Compared with the control group, the intensities of PI(16:0/22:5(4Z,7Z,10Z,13Z,16Z)), PC(22:6(4Z,7Z,10Z,13Z,16Z,19Z)/18:1(9Z)), PA(16:0/18:1(11Z)), 17-beta-estradiol-3-glucuronide, and N6,N6,N6-trimethyl-L-lysine decreased significantly (p < 0.01) and the intensities of 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline, LysoPC(20:4(5Z,8Z,11Z,14Z)/0:0), adenosine monophosphate, adenosine-5'-phosphosulfate, LacCer(d18:1/12:0),3-dehydro-L-gulonate, N-(1-deoxy-1-fructosyl)tryptophan, homovanillic acid, and LPA(0:0/18:1(9Z)) increased significantly (p < 0.01) in the BTBR group. These changes in metabolites were closely related to perturbations in lipid metabolism, energy metabolism, purine metabolism, sulfur metabolism, amino acid metabolism, and carnitine biosynthesis. Notably, exacerbation of the oxidative stress response caused by differential prooxidant metabolites led to alteration of antioxidative systems in the cerebral cortex and resulted in mitochondrial dysfunction, further leading to abnormal energy metabolism as an etiological mechanism of autism. A central role of abnormal metabolites in neurological functions associated with behavioral outcomes and disturbance of sulfur metabolism and carnitine biosynthesis were found in the cerebral cortex of BTBR mice, which helped increase our understanding for exploring the pathological mechanism of autism.
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Affiliation(s)
- Can Cao
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Qi Li
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yanping Chen
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Mingyang Zou
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Caihong Sun
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Xiangning Li
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Lijie Wu
- Department of Children's and Adolescent Health, Public Health College of Harbin Medical University, Harbin, Heilongjiang, 150081, China.
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5
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Zou J, Shang W, Yang L, Liu T, Wang L, Li X, Zhao J, Rao X, Gao J, Fan X. Microglia activation in the mPFC mediates anxiety-like behaviors caused by Staphylococcus aureus strain USA300. Brain Behav 2022; 12:e2715. [PMID: 35977050 PMCID: PMC9480961 DOI: 10.1002/brb3.2715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/19/2022] [Accepted: 07/07/2022] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Staphylococcus aureus (S. aureus) is considered as one of the major causative agents of serious hospital- and community-acquired infections. Recent studies have reported that S. aureus infection induced neuroinflammation and was linked with some mental disorders. To evaluate the effects of S. aureus infection on abnormal behaviors, we conducted the present study. METHODS A S. aureus USA300-infected mouse model was established using bacterial suspension injection into tail vein. A series of behavioral tests were performed after USA300 infection. The expression of cytokines was detected in serum and mPFC. The number and some morphological parameters of microglia were also evaluated by immunofluorescence staining. RESULTS Anxiety-like behaviors, instead of locomotor activity impairment or depression-like behaviors, were observed in mice infected with S. aureus USA300 compared with control. S. aureus USA300 infection caused overexpression of IL-6, TNF-α, and IL-1β in serum, resulted in microglial over-activation and excessive release of proinflammatory cytokines in the mPFC. In addition, overexpression of TLR2 accompanied by increased GLS1 and p-STAT3 was observed in the mPFC of mice infected with S. aureus USA300. CONCLUSION This study provides evidence that S. aureus USA300 infection can lead to neuroinflammation in the mPFC of mice, which may contribute to the development of anxiety.
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Affiliation(s)
- Jiao Zou
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Weilong Shang
- Department of Microbiology, College of Basic Medical Sciences, Third Military Medical University (Army Medical University), Key Laboratory of Microbial Engineering under the Educational Committee in Chongqing, Chongqing, China
| | - Ling Yang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Tianyao Liu
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Lian Wang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xin Li
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jinghui Zhao
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiancai Rao
- Department of Microbiology, College of Basic Medical Sciences, Third Military Medical University (Army Medical University), Key Laboratory of Microbial Engineering under the Educational Committee in Chongqing, Chongqing, China
| | - Junwei Gao
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaotang Fan
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing, China
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6
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Adhikari A, Buchanan FKB, Fenton TA, Cameron DL, Halmai JANM, Copping NA, Fink KD, Silverman JL. Touchscreen Cognitive Deficits, Hyperexcitability, and Hyperactivity in Males and Females Using Two Models of Cdkl5 Deficiency. Hum Mol Genet 2022; 31:3032-3050. [PMID: 35445702 PMCID: PMC9476626 DOI: 10.1093/hmg/ddac091] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 11/17/2022] Open
Abstract
Many neurodevelopmental disorders (NDDs) are the result of mutations on the X chromosome. One severe NDD resulting from mutations on the X chromosome is CDKL5 deficiency disorder (CDD). CDD is an epigenetic, X-linked NDD characterized by intellectual disability (ID), pervasive seizures and severe sleep disruption, including recurring hospitalizations. CDD occurs at a 4:1 ratio, with a female bias. CDD is driven by the loss of cyclin-dependent kinase-like 5 (CDKL5), a serine/threonine kinase that is essential for typical brain development, synapse formation and signal transmission. Previous studies focused on male subjects from animal models, likely to avoid the complexity of X mosaicism. For the first time, we report translationally relevant behavioral phenotypes in young adult (8–20 weeks) females and males with robust signal size, including impairments in learning and memory, substantial hyperactivity and increased susceptibility to seizures/reduced seizure thresholds, in both sexes, and in two models of CDD preclinical mice, one with a general loss-of-function mutation and one that is a patient-derived mutation.
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Affiliation(s)
- Anna Adhikari
- MIND Institute, University of California Davis School of Medicine, Sacramento, CA.,Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA
| | - Fiona K B Buchanan
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA.,Stem Cell Program and Gene Therapy Center, University of California Davis School of Medicine, Sacramento, CA
| | - Timothy A Fenton
- MIND Institute, University of California Davis School of Medicine, Sacramento, CA.,Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA
| | - David L Cameron
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA.,Stem Cell Program and Gene Therapy Center, University of California Davis School of Medicine, Sacramento, CA
| | - Julian A N M Halmai
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA.,Stem Cell Program and Gene Therapy Center, University of California Davis School of Medicine, Sacramento, CA
| | - Nycole A Copping
- MIND Institute, University of California Davis School of Medicine, Sacramento, CA.,Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA
| | - Kyle D Fink
- MIND Institute, University of California Davis School of Medicine, Sacramento, CA.,Department of Neurology, University of California Davis School of Medicine, Sacramento, CA.,Stem Cell Program and Gene Therapy Center, University of California Davis School of Medicine, Sacramento, CA
| | - Jill L Silverman
- MIND Institute, University of California Davis School of Medicine, Sacramento, CA.,Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA
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7
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Calsbeek JJ, González EA, Boosalis CA, Zolkowska D, Bruun DA, Rowland DJ, Saito NH, Harvey DJ, Chaudhari AJ, Rogawski MA, Garbow JR, Lein PJ. Strain differences in the extent of brain injury in mice after tetramethylenedisulfotetramine-induced status epilepticus. Neurotoxicology 2021; 87:43-50. [PMID: 34478772 PMCID: PMC8595842 DOI: 10.1016/j.neuro.2021.08.011] [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: 07/13/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 11/30/2022]
Abstract
Acute intoxication with tetramethylenedisulfotetramine (TETS) can trigger status epilepticus (SE) in humans. Survivors often exhibit long-term neurological effects, including electrographic abnormalities and cognitive deficits, but the pathogenic mechanisms linking the acute toxic effects of TETS to chronic outcomes are not known. Here, we use advanced in vivo imaging techniques to longitudinally monitor the neuropathological consequences of TETS-induced SE in two different mouse strains. Adult male NIH Swiss and C57BL/6J mice were injected with riluzole (10 mg/kg, i.p.), followed 10 min later by an acute dose of TETS (0.2 mg/kg in NIH Swiss; 0.3 mg/kg, i.p. in C57BL/6J) or an equal volume of vehicle (10% DMSO in 0.9% sterile saline). Different TETS doses were administered to trigger comparable seizure behavior between strains. Seizure behavior began within minutes of TETS exposure and rapidly progressed to SE that was terminated after 40 min by administration of midazolam (1.8 mg/kg, i.m.). The brains of vehicle and TETS-exposed mice were imaged using in vivo magnetic resonance (MR) and translocator protein (TSPO) positron emission tomography (PET) at 1, 3, 7, and 14 days post-exposure to monitor brain injury and neuroinflammation, respectively. When the brain scans of TETS mice were compared to those of vehicle controls, subtle and transient neuropathology was observed in both mouse strains, but more extensive and persistent TETS-induced neuropathology was observed in C57BL/6J mice. In addition, one NIH Swiss TETS mouse that did not respond to the midazolam therapy, but remained in SE for more than 2 h, displayed robust neuropathology as determined by in vivo imaging and confirmed by FluoroJade C staining and IBA-1 immunohistochemistry as readouts of neurodegeneration and neuroinflammation, respectively. These findings demonstrate that the extent of injury observed in the mouse brain after TETS-induced SE varied according to strain, dose of TETS and/or the duration of SE. These observations suggest that TETS-intoxicated humans who do not respond to antiseizure medication are at increased risk for brain injury.
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Affiliation(s)
- Jonas J Calsbeek
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, 95616, USA.
| | - Eduardo A González
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, 95616, USA.
| | - Casey A Boosalis
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, 95616, USA.
| | - Dorota Zolkowska
- Department of Neurology, University of California, Davis, School of Medicine, Davis, CA, 95616, USA.
| | - Donald A Bruun
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, 95616, USA.
| | - Douglas J Rowland
- Center for Molecular and Genomic Imaging, University of California, Davis, College of Engineering, Davis, CA, 95616, USA.
| | - Naomi H Saito
- Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, CA, 95616, USA.
| | - Danielle J Harvey
- Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, CA, 95616, USA.
| | - Abhijit J Chaudhari
- Center for Molecular and Genomic Imaging, University of California, Davis, College of Engineering, Davis, CA, 95616, USA.
| | - Michael A Rogawski
- Department of Neurology, University of California, Davis, School of Medicine, Davis, CA, 95616, USA.
| | - Joel R Garbow
- Biomedical Magnetic Resonance Laboratory, Mallinckrodt Institute of Radiology, Washington University in St. Louis, School of Medicine, St. Louis, MO, 63110, USA.
| | - Pamela J Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, CA, 95616, USA.
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8
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Haigh JL, Adhikari A, Copping NA, Stradleigh T, Wade AA, Catta-Preta R, Su-Feher L, Zdilar I, Morse S, Fenton TA, Nguyen A, Quintero D, Agezew S, Sramek M, Kreun EJ, Carter J, Gompers A, Lambert JT, Canales CP, Pennacchio LA, Visel A, Dickel DE, Silverman JL, Nord AS. Deletion of a non-canonical regulatory sequence causes loss of Scn1a expression and epileptic phenotypes in mice. Genome Med 2021; 13:69. [PMID: 33910599 PMCID: PMC8080386 DOI: 10.1186/s13073-021-00884-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/06/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Genes with multiple co-active promoters appear common in brain, yet little is known about functional requirements for these potentially redundant genomic regulatory elements. SCN1A, which encodes the NaV1.1 sodium channel alpha subunit, is one such gene with two co-active promoters. Mutations in SCN1A are associated with epilepsy, including Dravet syndrome (DS). The majority of DS patients harbor coding mutations causing SCN1A haploinsufficiency; however, putative causal non-coding promoter mutations have been identified. METHODS To determine the functional role of one of these potentially redundant Scn1a promoters, we focused on the non-coding Scn1a 1b regulatory region, previously described as a non-canonical alternative transcriptional start site. We generated a transgenic mouse line with deletion of the extended evolutionarily conserved 1b non-coding interval and characterized changes in gene and protein expression, and assessed seizure activity and alterations in behavior. RESULTS Mice harboring a deletion of the 1b non-coding interval exhibited surprisingly severe reductions of Scn1a and NaV1.1 expression throughout the brain. This was accompanied by electroencephalographic and thermal-evoked seizures, and behavioral deficits. CONCLUSIONS This work contributes to functional dissection of the regulatory wiring of a major epilepsy risk gene, SCN1A. We identified the 1b region as a critical disease-relevant regulatory element and provide evidence that non-canonical and seemingly redundant promoters can have essential function.
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Affiliation(s)
- Jessica L Haigh
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Anna Adhikari
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- MIND Institute and Department of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, CA, USA
| | - Nycole A Copping
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- MIND Institute and Department of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, CA, USA
| | - Tyler Stradleigh
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - A Ayanna Wade
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Rinaldo Catta-Preta
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Linda Su-Feher
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Iva Zdilar
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Sarah Morse
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Timothy A Fenton
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- MIND Institute and Department of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, CA, USA
| | - Anh Nguyen
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Diana Quintero
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Samrawit Agezew
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Michael Sramek
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Ellie J Kreun
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Jasmine Carter
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Andrea Gompers
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Jason T Lambert
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Cesar P Canales
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA
| | - Len A Pennacchio
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- U.S. Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
- Comparative Biochemistry Program, University of California, Berkeley, Berkeley, CA, USA
| | - Axel Visel
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- U.S. Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
- Comparative Biochemistry Program, University of California, Berkeley, Berkeley, CA, USA
- School of Natural Sciences, University of California, Merced, CA, USA
| | - Diane E Dickel
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- U.S. Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
- Comparative Biochemistry Program, University of California, Berkeley, Berkeley, CA, USA
| | - Jill L Silverman
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA.
- MIND Institute and Department of Psychiatry and Behavioral Sciences, UC Davis School of Medicine, Sacramento, CA, USA.
| | - Alex S Nord
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Davis, CA, USA.
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, USA.
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9
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Adhikari A, Copping NA, Beegle J, Cameron DL, Deng P, O'Geen H, Segal DJ, Fink KD, Silverman JL, Anderson JS. Functional rescue in an Angelman syndrome model following treatment with lentivector transduced hematopoietic stem cells. Hum Mol Genet 2021; 30:1067-1083. [PMID: 33856035 PMCID: PMC8188406 DOI: 10.1093/hmg/ddab104] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 12/14/2022] Open
Abstract
Angelman syndrome (AS) is a rare neurodevelopmental disorder characterized by impaired communication skills, ataxia, motor and balance deficits, intellectual disabilities, and seizures. The genetic cause of AS is the neuronal loss of UBE3A expression in the brain. A novel approach, described here, is a stem cell gene therapy which uses lentivector-transduced hematopoietic stem and progenitor cells to deliver functional UBE3A to affected cells. We have demonstrated both the prevention and reversal of AS phenotypes upon transplantation and engraftment of human CD34+ cells transduced with a Ube3a lentivector in a novel immunodeficient Ube3amat−/pat+ IL2rg−/y mouse model of AS. A significant improvement in motor and cognitive behavioral assays as well as normalized delta power measured by electroencephalogram was observed in neonates and adults transplanted with the gene modified cells. Human hematopoietic profiles observed in the lymphoid organs by detection of human immune cells were normal. Expression of UBE3A was detected in the brains of the adult treatment group following immunohistochemical staining illustrating engraftment of the gene-modified cells expressing UBE3A in the brain. As demonstrated with our data, this stem cell gene therapy approach offers a promising treatment strategy for AS, not requiring a critical treatment window.
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Affiliation(s)
- Anna Adhikari
- Department of Psychiatry and Behavioral Sciences, MIND Institute, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Nycole A Copping
- Department of Psychiatry and Behavioral Sciences, MIND Institute, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Julie Beegle
- Stem Cell Program, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - David L Cameron
- Stem Cell Program, Department of Neurology, Institute for Regenerative Cures, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Peter Deng
- Stem Cell Program, Department of Neurology, Institute for Regenerative Cures, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Henriette O'Geen
- Department of Biochemistry and Medical Microbiology, UC Davis Genome Center, University of California Davis School of Medicine, Davis, CA 95616, USA
| | - David J Segal
- Department of Biochemistry and Medical Microbiology, UC Davis Genome Center, University of California Davis School of Medicine, Davis, CA 95616, USA
| | - Kyle D Fink
- Stem Cell Program, Department of Neurology, Institute for Regenerative Cures, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Jill L Silverman
- Department of Psychiatry and Behavioral Sciences, MIND Institute, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - Joseph S Anderson
- Stem Cell Program, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, CA 95817, USA
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10
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Ellegood J, Petkova SP, Kinman A, Qiu LR, Adhikari A, Wade AA, Fernandes D, Lindenmaier Z, Creighton A, Nutter LMJ, Nord AS, Silverman JL, Lerch JP. Neuroanatomy and behavior in mice with a haploinsufficiency of AT-rich interactive domain 1B (ARID1B) throughout development. Mol Autism 2021; 12:25. [PMID: 33757588 PMCID: PMC7986278 DOI: 10.1186/s13229-021-00432-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 03/09/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND One of the causal mechanisms underlying neurodevelopmental disorders (NDDs) is chromatin modification and the genes that regulate chromatin. AT-rich interactive domain 1B (ARID1B), a chromatin modifier, has been linked to autism spectrum disorder and to affect rare and inherited genetic variation in a broad set of NDDs. METHODS A novel preclinical mouse model of Arid1b deficiency was created and validated to characterize and define neuroanatomical, behavioral and transcriptional phenotypes. Neuroanatomy was assessed ex vivo in adult animals and in vivo longitudinally from birth to adulthood. Behavioral testing was also performed throughout development and tested all aspects of motor, learning, sociability, repetitive behaviors, seizure susceptibility, and general milestones delays. RESULTS We validated decreased Arid1b mRNA and protein in Arid1b+/- mice, with signatures of increased axonal and synaptic gene expression, decreased transcriptional regulator and RNA processing expression in adult Arid1b+/- cerebellum. During neonatal development, Arid1b+/- mice exhibited robust impairments in ultrasonic vocalizations (USVs) and metrics of developmental growth. In addition, a striking sex effect was observed neuroanatomically throughout development. Behaviorally, as adults, Arid1b+/- mice showed low motor skills in open field exploration and normal three-chambered approach. Arid1b+/- mice had learning and memory deficits in novel object recognition but not in visual discrimination and reversal touchscreen tasks. Social interactions in the male-female social dyad with USVs revealed social deficits on some but not all parameters. No repetitive behaviors were observed. Brains of adult Arid1b+/- mice had a smaller cerebellum and a larger hippocampus and corpus callosum. The corpus callosum increase seen here contrasts previous reports which highlight losses in corpus callosum volume in mice and humans. LIMITATIONS The behavior and neuroimaging analyses were done on separate cohorts of mice, which did not allow a direct correlation between the imaging and behavioral findings, and the transcriptomic analysis was exploratory, with no validation of altered expression beyond Arid1b. CONCLUSIONS This study represents a full validation and investigation of a novel model of Arid1b+/- haploinsufficiency throughout development and highlights the importance of examining both sexes throughout development in NDDs.
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Affiliation(s)
- J Ellegood
- Mouse Imaging Centre (MICe), Hospital for Sick Children, 25 Orde Street, Toronto, ON, M5T 3H7, Canada.
| | - S P Petkova
- Department of Psychiatry and Behavioral Sciences, MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
- Neuroscience Graduate Group, University of California - Davis, Davis, CA, USA
| | - A Kinman
- Mouse Imaging Centre (MICe), Hospital for Sick Children, 25 Orde Street, Toronto, ON, M5T 3H7, Canada
| | - L R Qiu
- Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neuroscience, The University of Oxford, Oxford, UK
| | - A Adhikari
- Department of Psychiatry and Behavioral Sciences, MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - A A Wade
- Neuroscience Graduate Group, University of California - Davis, Davis, CA, USA
| | - D Fernandes
- Mouse Imaging Centre (MICe), Hospital for Sick Children, 25 Orde Street, Toronto, ON, M5T 3H7, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Z Lindenmaier
- Mouse Imaging Centre (MICe), Hospital for Sick Children, 25 Orde Street, Toronto, ON, M5T 3H7, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - A Creighton
- The Centre for Phenogenomics, Hospital for Sick Children, Toronto, ON, Canada
| | - L M J Nutter
- The Centre for Phenogenomics, Hospital for Sick Children, Toronto, ON, Canada
| | - A S Nord
- Department of Psychiatry and Behavioral Sciences, MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
- Neuroscience Graduate Group, University of California - Davis, Davis, CA, USA
- Department of Neurobiology, Physiology and Behavior, University of California - Davis, Davis, CA, USA
| | - J L Silverman
- Department of Psychiatry and Behavioral Sciences, MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - J P Lerch
- Mouse Imaging Centre (MICe), Hospital for Sick Children, 25 Orde Street, Toronto, ON, M5T 3H7, Canada
- Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neuroscience, The University of Oxford, Oxford, UK
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11
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Role of PPARs in Progression of Anxiety: Literature Analysis and Signaling Pathways Reconstruction. PPAR Res 2020; 2020:8859017. [PMID: 33312191 PMCID: PMC7721491 DOI: 10.1155/2020/8859017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/26/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022] Open
Abstract
Peroxisome proliferator-activated receptor (PPAR) group includes three isoforms encoded by PPARG, PPARA, and PPARD genes. High concentrations of PPARs are found in parts of the brain linked to anxiety development, including hippocampus and amygdala. Among three PPAR isoforms, PPARG demonstrates the highest expression in CNS, where it can be found in neurons, astrocytes, and glial cells. Herein, the highest PPARG expression occurs in amygdala. However, little is known considering possible connections between PPARs and anxiety behavior. We reviewed possible connections between PPARs and anxiety. We used the Pathway Studio software (Elsevier). Signal pathways were created according to previously developed algorithms. SNEA was performed in Pathway Studio. Current study revealed 14 PPAR-regulated proteins linked to anxiety. Possible mechanism of PPAR involvement in neuroinflammation protection is proposed. Signal pathway reconstruction and reviewing aimed to reveal possible connection between PPARG and CCK-ergic system was conducted. Said analysis revealed that PPARG-dependent regulation of MME and ACE peptidase expression may affect levels of nonhydrolysed, i.e., active CCK-4. Impairments in PPARG regulation and following MME and ACE peptidase expression impairments in amygdala may be the possible mechanism leading to pathological anxiety development, with brain CCK-4 accumulation being a key link. Literature data analysis and signal pathway reconstruction and reviewing revealed two possible mechanisms of peroxisome proliferator-activated receptors involvement in pathological anxiety: (1) cytokine expression and neuroinflammation mechanism and (2) regulation of peptidases targeted to anxiety-associated neuropeptides, primarily CCK-4, mechanism.
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12
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Zhong H, Xiao R, Ruan R, Liu H, Li X, Cai Y, Zhao J, Fan X. Neonatal curcumin treatment restores hippocampal neurogenesis and improves autism-related behaviors in a mouse model of autism. Psychopharmacology (Berl) 2020; 237:3539-3552. [PMID: 32803366 DOI: 10.1007/s00213-020-05634-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023]
Abstract
RATIONALE Autism spectrum disorders (ASDs) are highly prevalent neurodevelopmental disorders characterized by deficits in social communication and interaction, repetitive stereotyped behaviors, and cognitive impairments. Curcumin has been indicated to be neuroprotective against neurological and psychological disorders. However, the role of curcumin in autistic phenotypes remains unclear. OBJECTIVES In the current study, we evaluated the effects of neonatal curcumin treatment on behavior and hippocampal neurogenesis in BTBRT+ltpr3tf/J (BTBR) mice, a model of autism. METHODS C57BL/6J (C57) and BTBR mouse pups were treated with 0.1% dimethyl sulfoxide (DMSO) or curcumin (20 mg/kg) from postnatal day 6 (P6) to P8. Neural progenitor cells (NPCs) in the hippocampal dentate gyrus (DG) were evaluated on P8, and neurogenesis was measured on P24 by immunofluorescence. A battery of behavioral tests was carried out when the mice were 8 weeks of age. RESULTS Neonatal curcumin treatment improved autism-related symptoms in BTBR mice, enhancing sociability, reducing repetitive behaviors, and ameliorating cognitive impairments. Furthermore, the suppression of hippocampal neurogenesis in BTBR mice was greatly rescued after neonatal curcumin treatment, leading to an increase in neurogenic processes and an increase in NPC proliferation concomitant with an expansion of the NPC pool on P8, and NPC differentiation towards the neuronal lineage was promoted in the DG of BTBR mice on P24. CONCLUSIONS Our findings suggest that neonatal curcumin treatment elicits a therapeutic response through the restoration of hippocampal neurogenesis in BTBR mice and thus may represent a promising novel pharmacological strategy for ASD treatment.
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Affiliation(s)
- Hongyu Zhong
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Rui Xiao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Ruotong Ruan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Hui Liu
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Xin Li
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Yun Cai
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Jinghui Zhao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China. .,Institute of Brain and Intelligence, Chongqing, 400038, China.
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13
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Jones KL, Pride MC, Edmiston E, Yang M, Silverman JL, Crawley JN, Van de Water J. Autism-specific maternal autoantibodies produce behavioral abnormalities in an endogenous antigen-driven mouse model of autism. Mol Psychiatry 2020; 25:2994-3009. [PMID: 29955164 PMCID: PMC6310680 DOI: 10.1038/s41380-018-0126-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/25/2018] [Accepted: 06/05/2018] [Indexed: 01/05/2023]
Abstract
Immune dysregulation has been noted consistently in individuals with autism spectrum disorder (ASD) and their families, including the presence of autoantibodies reactive to fetal brain proteins in nearly a quarter of mothers of children with ASD versus <1% in mothers of typically developing children. Our lab recently identified the peptide epitope sequences on seven antigenic proteins targeted by these maternal autoantibodies. Through immunization with these peptide epitopes, we have successfully created an endogenous, antigen-driven mouse model that ensures a constant exposure to the salient autoantibodies throughout gestation in C57BL/6J mice. This exposure more naturally mimics what is observed in mothers of children with ASD. Male and female offspring were tested using a comprehensive sequence of behavioral assays, as well as measures of health and development highly relevant to ASD. We found that MAR-ASD male and female offspring had significant alterations in development and social interactions during dyadic play. Although 3-chambered social approach was not significantly different, fewer social interactions with an estrous female were noted in the adult male MAR-ASD animals, as well as reduced vocalizations emitted in response to social cues with robust repetitive self-grooming behaviors relative to saline treated controls. The generation of MAR-ASD-specific epitope autoantibodies in female mice prior to breeding created a model that demonstrates for the first time that ASD-specific antigen-induced maternal autoantibodies produced alterations in a constellation of ASD-relevant behaviors.
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Affiliation(s)
- Karen L. Jones
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Clinical Immunology, University of California, Davis, CA, USA,MIND Institute, University of California, Davis, CA, USA
| | - Michael C. Pride
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Elizabeth Edmiston
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Clinical Immunology, University of California, Davis, CA, USA
| | - Mu Yang
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA,Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Jill L. Silverman
- MIND Institute, University of California, Davis, CA, USA,Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Jacqueline N. Crawley
- MIND Institute, University of California, Davis, CA, USA,Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA, USA
| | - Judy Van de Water
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Clinical Immunology, University of California, Davis, CA, USA. .,MIND Institute, University of California, Davis, CA, USA.
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14
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Copping NA, Adhikari A, Petkova SP, Silverman JL. Genetic backgrounds have unique seizure response profiles and behavioral outcomes following convulsant administration. Epilepsy Behav 2019; 101:106547. [PMID: 31698263 PMCID: PMC6901115 DOI: 10.1016/j.yebeh.2019.106547] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 08/27/2019] [Accepted: 09/04/2019] [Indexed: 01/16/2023]
Abstract
Three highly utilized strains of mice, common for preclinical genetic studies, were evaluated for seizure susceptibility and behavioral outcomes common to the clinical phenotypes of numerous psychiatric disorders following repeated low-dose treatment with either a gamma-aminobutyric acid (GABA) receptor antagonist (pentylenetetrazole (PTZ)) or a glutamate agonist (kainic acid (KA)). Effects of strain and treatment were evaluated with classic seizure scoring and a tailored behavior battery focused on behavioral domains common in neuropsychiatric research: learning and memory, social behavior, and motor abilities, as well as seizure susceptibility and/or resistance. Seizure response was induced by a single daily treatment of either PTZ (30 mg/kg, intraperitoneally (i.p.)) or KA (5 mg/kg, i.p.) for 10 days. Pentylenetetrazole-treated FVB/NJ and C57BL/6NJ strains of mice showed strong, clear seizure responses. This also resulted in cognitive and social deficits, and increased susceptibility to a high dose of PTZ. Kainic acid-treated FVB/NJ and C57BL/6NJ strains of mice had a robust seizure response, which resulted in hyperactivity. Pentylenetetrazole-treated C57BL/6J mice demonstrated mild hyperactivity, while KA-treated C57BL/6J displayed cognitive deficits and resistance to a high dose of KA but no social deficits. Overall, a uniquely different seizure response profile was detected in the C57BL/6J strain with few observable instances of seizure response despite repeated convulsant administration by two mechanisms. This work illustrated that differing background genetic strains have unique seizure susceptibility profiles and distinct social and cognitive behavior following PTZ and/or KA treatment and that it is, therefore, necessary to consider strain differences before attributing behavioral phenotypes to gene(s) of interest during preclinical evaluations of genetic mouse models, especially when outcome measures are focused on cognitive and/or social behaviors common to the clinical features of numerous neurological disorders.
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Affiliation(s)
- Nycole Ashley Copping
- University of California, Davis, MIND Institute, School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Anna Adhikari
- University of California, Davis, MIND Institute, School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Stela Pavlova Petkova
- University of California, Davis, MIND Institute, School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Jill Lynn Silverman
- University of California, Davis, MIND Institute, School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA.
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15
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Adhikari A, Copping NA, Onaga B, Pride MC, Coulson RL, Yang M, Yasui DH, LaSalle JM, Silverman JL. Cognitive deficits in the Snord116 deletion mouse model for Prader-Willi syndrome. Neurobiol Learn Mem 2019; 165:106874. [PMID: 29800646 PMCID: PMC6520209 DOI: 10.1016/j.nlm.2018.05.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/24/2018] [Accepted: 05/16/2018] [Indexed: 01/12/2023]
Abstract
Prader-Willi syndrome (PWS) is an imprinted neurodevelopmental disease caused by a loss of paternal genes on chromosome 15q11-q13. It is characterized by cognitive impairments, developmental delay, sleep abnormalities, and hyperphagia often leading to obesity. Clinical research has shown that a lack of expression of SNORD116, a paternally expressed imprinted gene cluster that encodes multiple copies of a small nucleolar RNA (snoRNA) in both humans and mice, is most likely responsible for many PWS symptoms seen in humans. The majority of previous research using PWS preclinical models focused on characterization of the hyperphagic and metabolic phenotypes. However, a crucial understudied clinical phenotype is cognitive impairments and thus we investigated the learning and memory abilities using a model of PWS, with a heterozygous deletion in Snord116. We utilized the novel object recognition task, which doesn't require external motivation, or exhaustive swim training. Automated findings were further confirmed with manual scoring by a highly trained blinded investigator. We discovered deficits in Snord116+/- mutant mice in the novel object recognition, location memory and tone cue fear conditioning assays when compared to age-, sex- matched, littermate control Snord116+/+ mice. Further, we confirmed that despite physical neo-natal developmental delays, Snord116+/- mice had normal exploratory and motor abilities. These results show that the Snord116+/- deletion murine model is a valuable preclinical model for investigating learning and memory impairments in individuals with PWS without common confounding phenotypes.
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Affiliation(s)
- Anna Adhikari
- MIND Institute, University of California, Davis School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Nycole A Copping
- MIND Institute, University of California, Davis School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Beth Onaga
- MIND Institute, University of California, Davis School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Michael C Pride
- MIND Institute, University of California, Davis School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA
| | - Rochelle L Coulson
- MIND Institute, Genome Center, UC Davis School of Medicine, Department of Medical Microbiology and Immunology, Davis, CA, USA
| | - Mu Yang
- Department of Psychiatry and Institute for Genomic Medicine, New York, NY, USA
| | - Dag H Yasui
- MIND Institute, Genome Center, UC Davis School of Medicine, Department of Medical Microbiology and Immunology, Davis, CA, USA
| | - Janine M LaSalle
- MIND Institute, Genome Center, UC Davis School of Medicine, Department of Medical Microbiology and Immunology, Davis, CA, USA
| | - Jill L Silverman
- MIND Institute, University of California, Davis School of Medicine, Department of Psychiatry and Behavioral Sciences, Sacramento, CA, USA.
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16
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Shi R, Long C, Dai Y, Huang Q, Gao Y, Zhang N, Chen Y, Liu S, Ma Q, Quan L, Zhang Y, Luo B. Bongkrekic acid poisoning: Severe liver function damage combined with multiple organ failure caused by eating spoiled food. Leg Med (Tokyo) 2019; 41:101622. [DOI: 10.1016/j.legalmed.2019.07.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 07/18/2019] [Accepted: 07/24/2019] [Indexed: 01/24/2023]
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17
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Zhang Q, Wu H, Zou M, Li L, Li Q, Sun C, Xia W, Cao Y, Wu L. Folic acid improves abnormal behavior via mitigation of oxidative stress, inflammation, and ferroptosis in the BTBR T+ tf/J mouse model of autism. J Nutr Biochem 2019; 71:98-109. [DOI: 10.1016/j.jnutbio.2019.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 02/27/2019] [Accepted: 05/09/2019] [Indexed: 01/09/2023]
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18
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Lauterborn JC, Schultz MN, Le AA, Amani M, Friedman AE, Leach PT, Gall CM, Lynch GS, Crawley JN. Spaced training improves learning in Ts65Dn and Ube3a mouse models of intellectual disabilities. Transl Psychiatry 2019; 9:166. [PMID: 31182707 PMCID: PMC6557858 DOI: 10.1038/s41398-019-0495-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/14/2019] [Accepted: 03/23/2019] [Indexed: 12/29/2022] Open
Abstract
Benefits of distributed learning strategies have been extensively described in the human literature, but minimally investigated in intellectual disability syndromes. We tested the hypothesis that training trials spaced apart in time could improve learning in two distinct genetic mouse models of neurodevelopmental disorders characterized by intellectual impairments. As compared to training with massed trials, spaced training significantly improved learning in both the Ts65Dn trisomy mouse model of Down syndrome and the maternally inherited Ube3a mutant mouse model of Angelman syndrome. Spacing the training trials at 1 h intervals accelerated acquisition of three cognitive tasks by Ts65Dn mice: (1) object location memory, (2) novel object recognition, (3) water maze spatial learning. Further, (4) spaced training improved water maze spatial learning by Ube3a mice. In contrast, (5) cerebellar-mediated rotarod motor learning was not improved by spaced training. Corroborations in three assays, conducted in two model systems, replicated within and across two laboratories, confirm the strength of the findings. Our results indicate strong translational relevance of a behavioral intervention strategy for improving the standard of care in treating the learning difficulties that are characteristic and clinically intractable features of many neurodevelopmental disorders.
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Affiliation(s)
- J C Lauterborn
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - M N Schultz
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
| | - A A Le
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - M Amani
- Department of Psychiatry and Human Behavior, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
- Department of Physiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - A E Friedman
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
- Harvard University, Cambridge, MA, USA
| | - P T Leach
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA
- Biogen Inc., Cambridge, MA, USA
| | - C M Gall
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - G S Lynch
- Department of Anatomy & Neurobiology, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
- Department of Psychiatry and Human Behavior, School of Medicine, University of California Irvine, Irvine, CA, 92697, USA
| | - J N Crawley
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95817, USA.
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Lauková M, Velíšková J, Velíšek L, Shakarjian MP. Tetramethylenedisulfotetramine neurotoxicity: What have we learned in the past 70 years? Neurobiol Dis 2019; 133:104491. [PMID: 31176716 DOI: 10.1016/j.nbd.2019.104491] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/27/2019] [Accepted: 06/05/2019] [Indexed: 12/21/2022] Open
Abstract
Tetramethylenedisulfotetramine (tetramine, TETS, TMDT) is a seizure-producing neurotoxic chemical formed by the condensation of sulfamide and formaldehyde. Serendipitously discovered through an occupational exposure in 1949, it was promoted as a rodenticide but later banned worldwide due to its danger to human health. However, exceptional activity of the agent against rodent pests resulted in its clandestine manufacture with large numbers of inadvertent, intentional, and mass poisonings, which continue to this day. Facile synthesis, extreme potency, persistence, lack of odor, color, and taste identify it as an effective food adulterant and potential chemical agent of terror. No known antidote or targeted treatment is currently available. In this review we examine the origins of tetramethylenedisulfotetramine, from its identification as a neurotoxicant 70 years ago, through early research, to the most recent findings including the risk it poses in the post-911 world. Included is the information known regarding its in vitro pharmacology as a GABAA receptor channel antagonist, the toxic syndrome it produces in vivo, and its effect upon vulnerable populations. We also summarize the available information about potential therapeutic countermeasures and treatment strategies as well as the contribution of clinical development of TMDT poisoning to our understanding of epileptogenesis. Finally we identify gaps in our knowledge and suggest potentially fruitful directions for continued research on this dangerous, yet intriguing compound.
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Affiliation(s)
- Marcela Lauková
- Department of Public Health, Division of Environmental Health Science, School of Health Sciences and Practice, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Pediatrics, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 84505, Slovakia
| | - Jana Velíšková
- Department of Cell Biology and Anatomy, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Obstetrics and Gynecology, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Neurology, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA
| | - Libor Velíšek
- Department of Cell Biology and Anatomy, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Neurology, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Pediatrics, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA
| | - Michael P Shakarjian
- Department of Public Health, Division of Environmental Health Science, School of Health Sciences and Practice, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Cell Biology and Anatomy, New York Medical College, 40 Sunshine Cottage Rd, Valhalla, NY 10595, USA; Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rutgers-Robert Wood Johnson Medical School, 675 Hoes Ln W, Piscataway, NJ 08854, USA.
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20
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Zhang R, Cai Y, Xiao R, Zhong H, Li X, Guo L, Xu H, Fan X. Human amniotic epithelial cell transplantation promotes neurogenesis and ameliorates social deficits in BTBR mice. Stem Cell Res Ther 2019; 10:153. [PMID: 31151403 PMCID: PMC6545017 DOI: 10.1186/s13287-019-1267-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/12/2019] [Accepted: 05/14/2019] [Indexed: 02/07/2023] Open
Abstract
Background Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impairments in social interactions and communication and stereotypical patterns of behaviors, interests, or activities. Even with the increased prevalence of ASD, there is no defined standard drug treatment for ASD patients. Currently, stem cells, including human amniotic epithelial cell (hAEC) transplantation, seem to be a promising treatment for ASD, but the effectiveness needs to be verified, and the mechanism has not been clarified. Methods We intraventricularly transplanted hAECs into a 2-month-old BTBR T+tf/J (BTBR) mouse model of ASD. Behavior tests were detected 1 month later; hippocampal neurogenesis, neuroprogenitor cell (NPC) pool, and microglia activation were analyzed with immunohistochemistry and immunofluorescence; the levels of pro-inflammatory cytokines, brain-derived neurotrophic factor (BDNF), and TrkB in the hippocampus were determined by real-time PCR or western blotting. Results After intraventricular injection of hAECs into adult males, social deficits in BTBR mice were significantly ameliorated. In addition, hAEC transplantation restored the decline of neurogenesis and NPCs in the hippocampus of BTBR mice by expanding the stem cell pool, and the decreased levels of BDNF and TrkB were also rescued in the hippocampus of the hAEC-injected BTBR mice. Meanwhile, the transplantation of hAECs did not induce microglial overactivation or excessive production of pro-inflammatory cytokines in the hippocampus of BTBR mice. Conclusions Based on these results, we found that hAEC transplantation ameliorated social deficits and promoted hippocampal neurogenesis in BTBR mice. Our study indicates a promising therapeutic option that could be applied to ASD patients in the future.
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Affiliation(s)
- Ruiyu Zhang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China
| | - Yulong Cai
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China
| | - Rui Xiao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China
| | - Hongyu Zhong
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China
| | - Xin Li
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China
| | - Lihe Guo
- Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Haiwei Xu
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Amy Medical University), Chongqing, 400038, China.
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University (Amy Medical University), Chongqing, 400038, China.
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21
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Liu T, Ma Y, Zhang R, Zhong H, Wang L, Zhao J, Yang L, Fan X. Resveratrol ameliorates estrogen deficiency-induced depression- and anxiety-like behaviors and hippocampal inflammation in mice. Psychopharmacology (Berl) 2019; 236:1385-1399. [PMID: 30607478 DOI: 10.1007/s00213-018-5148-5] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 12/11/2018] [Indexed: 12/22/2022]
Abstract
RATIONALE Resveratrol (RSV) has been indicated to exhibit beneficial effects on depression and anxiety treatment by suppression of inflammatory processes. Depression triggered by deficiency of estrogen and anxiety-like behaviors are associated with inflammation. The role of RSV in ovariectomized mice is unclear. OBJECTIVES We examine whether the RSV, a Sirt1 activator, alleviates ovariectomy-induced anxiety- and depression-like behaviors through the inhibition of inflammatory processes. METHODS Female C57BL/6J mice (6-8 weeks of age, 17-20 g) were ovariectomized and treated with RSV at a dose of 20 mg/kg for 2 weeks. Depression- and anxiety-like behaviors were compared with vehicle-injected control animals. Immunohistochemistry and qPCR were used to detect inflammation in the hippocampal region. RESULTS Ovariectomized mice were observed to suffer from anxiety- and depression-like behaviors. These effects were attenuated by treatment with RSV. Immunohistochemical staining results showed that RSV could reverse the increase of microglial activation in the hippocampal dentate gyrus. At a molecular level, RSV inhibited the activation of NLRP3 and NF-κB in the hippocampal region caused by deficiency of estrogen. CONCLUSIONS RSV suppressed the production of inflammatory cytokines by enhancing Sirt1 levels. Our findings indicated that RSV-induced Sirt1 activation counteracted estrogen deficiency-induced psychobehavioral changes via inhibition of inflammatory processes in the hippocampus. In anxiety and depression disorders, RSV is supposed to be an effective treatment for postmenopausal changes.
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Affiliation(s)
- Tianyao Liu
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Yuanyuan Ma
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Ruiyu Zhang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Hongyu Zhong
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Lian Wang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Jinghui Zhao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Ling Yang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, 400038, China.
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22
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Wang L, Cai Y, Fan X. Metformin Administration During Early Postnatal Life Rescues Autistic-Like Behaviors in the BTBR T+ Itpr3tf/J Mouse Model of Autism. Front Behav Neurosci 2018; 12:290. [PMID: 30555309 PMCID: PMC6281763 DOI: 10.3389/fnbeh.2018.00290] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 11/09/2018] [Indexed: 01/21/2023] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disability characterized by impaired social interactions, stereotypical repetitive behavior and restricted interests. Although the global incidence of ASD has increased over time, the etiology of ASD is poorly understood, and there is no effective pharmacological intervention for treating ASD. Recent studies have suggested that metformin has the potential to treat ASD. Thus, in this study, we assessed the therapeutic effects of early metformin treatment in a BTBR T+ Itpr3tf/J (BTBR) mouse model of ASD. We observed that early metformin administration significantly reversed social approach deficits, attenuated repetitive grooming and reduced marble burying in BTBR mice. Metformin did not change the general locomotor activity or anxiety-like behavior in both BTBR and C57BL/6J (B6) mice. Our findings suggest that early metformin treatment may have beneficial effects on ameliorating behavioral deficits in ASD.
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Affiliation(s)
- Lian Wang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
| | - Yulong Cai
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
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Tetramethylenedisulfotetramine: A Health Risk Compound and a Potential Chemical Warfare Agent. TOXICS 2018; 6:toxics6030051. [PMID: 30135374 PMCID: PMC6160919 DOI: 10.3390/toxics6030051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 08/04/2018] [Accepted: 08/16/2018] [Indexed: 01/03/2023]
Abstract
Tetramethylenedisulfotetramine (TETS, tetramine) is a toxic organic compound that is used as an effective rodenticide. However, this neurotoxin is not only toxic to rodents, it also causes poisoning in humans. Due to its high level of toxicity for humans, the use of TETS as a rodenticide has been banned and its production has been discontinued. Despite this, human poisoning by this substance is unfortunately still very common. The largest number of poisonings are reported in China, but in the United States, dozens of poisonings still happen annually. TETS is one of the most hazardous pesticides and also a possible chemical warfare agent with no known antidote. In this article, we aim to summarize the biochemical and toxicological data of TETS and hope to cast some light on the toxicological risk to human health.
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24
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Direct reprogramming of fibroblasts into neural stem cells by single non-neural progenitor transcription factor Ptf1a. Nat Commun 2018; 9:2865. [PMID: 30030434 PMCID: PMC6054649 DOI: 10.1038/s41467-018-05209-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 06/23/2018] [Indexed: 01/29/2023] Open
Abstract
Induced neural stem cells (iNSCs) reprogrammed from somatic cells have great potentials in cell replacement therapies and in vitro modeling of neural diseases. Direct conversion of fibroblasts into iNSCs has been shown to depend on a couple of key neural progenitor transcription factors (TFs), raising the question of whether such direct reprogramming can be achieved by non-neural progenitor TFs. Here we report that the non-neural progenitor TF Ptf1a alone is sufficient to directly reprogram mouse and human fibroblasts into self-renewable iNSCs capable of differentiating into functional neurons, astrocytes and oligodendrocytes, and improving cognitive dysfunction of Alzheimer’s disease mouse models when transplanted. The reprogramming activity of Ptf1a depends on its Notch-independent interaction with Rbpj which leads to subsequent activation of expression of TF genes and Notch signaling required for NSC specification, self-renewal, and homeostasis. Together, our data identify a non-canonical and safer approach to establish iNSCs for research and therapeutic purposes. Fibroblasts can be reprogrammed into induced neural stem cells (iNSCs) using transcription factors expressed in neural progenitors. Here the authors show that Ptf1a, which is normally expressed in postmitotic neurons, can reprogram fibroblasts to iNSCs through Notch independent interaction with Rbpj.
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25
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Fu J, Gao J, Gong L, Ma Y, Xu H, Gu Z, Zhu J, Fan X. Silica nanoparticle exposure during the neonatal period impairs hippocampal precursor proliferation and social behavior later in life. Int J Nanomedicine 2018; 13:3593-3608. [PMID: 29950837 PMCID: PMC6018854 DOI: 10.2147/ijn.s160828] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Introduction Silica nanoparticles (SiO2-NPs) are currently among the most widely used nanomaterials, but their potentially adverse effects on brain development remain unknown. The developing brain is extremely sensitive to NP neurotoxicity during the early postnatal period. Materials and methods Herein, we investigated the effects of SiO2-NPs (doses of 10, 20, or 50 mg with a particle size of ~91 nm, equivalent to aerosol mass concentrations 55.56, 111.11, and 277.78 mg/m3, respectively) exposure from postnatal day (P) 1 to P7 on hippocampal precursor proliferation at P8 and long-term neurobehavior in adults. Results SiO2-NP exposure resulted in inflammatory cell infiltration in lung tissue, microglia over-activation in the hippocampal dentate gyrus (DG), and decreased hippocampal precursor proliferation in the DG-subgranular zone at P8. Moreover, after exposure to 20 mg of SiO2-NPs, mice exhibited social interaction deficits and slight anxiety-like behaviors in adulthood, but this exposure did not induce locomotor activity impairment, depression-like behavior, or short-term memory impairment. Discussion These findings suggest that early-age SiO2-NP exposure induced inflammation and inhibited precursor proliferation in the DG in a dose-dependent manner, which might be related to the social dysfunction observed in adulthood.
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Affiliation(s)
- Jingjing Fu
- School of Nursing, Third Military Medical University, Chongqing 400038, China.,Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing 400038, China
| | - Junwei Gao
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing 400038, China
| | - Linji Gong
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanyuan Ma
- School of Nursing, Third Military Medical University, Chongqing 400038, China
| | - Haiwei Xu
- Southwest Eye Hospital/Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Zhanjun Gu
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingci Zhu
- School of Nursing, Third Military Medical University, Chongqing 400038, China
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing 400038, China
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26
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Wang L, Cai Y, Fan X. Metformin Administration During Early Postnatal Life Rescues Autistic-Like Behaviors in the BTBR T+ Itpr3tf/J Mouse Model of Autism. Front Behav Neurosci 2018; 12:290. [PMID: 30555309 DOI: 10.3389/fnbeh.2018.00290/bibtex] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 11/09/2018] [Indexed: 05/20/2023] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disability characterized by impaired social interactions, stereotypical repetitive behavior and restricted interests. Although the global incidence of ASD has increased over time, the etiology of ASD is poorly understood, and there is no effective pharmacological intervention for treating ASD. Recent studies have suggested that metformin has the potential to treat ASD. Thus, in this study, we assessed the therapeutic effects of early metformin treatment in a BTBR T+ Itpr3tf/J (BTBR) mouse model of ASD. We observed that early metformin administration significantly reversed social approach deficits, attenuated repetitive grooming and reduced marble burying in BTBR mice. Metformin did not change the general locomotor activity or anxiety-like behavior in both BTBR and C57BL/6J (B6) mice. Our findings suggest that early metformin treatment may have beneficial effects on ameliorating behavioral deficits in ASD.
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Affiliation(s)
- Lian Wang
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
| | - Yulong Cai
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
| | - Xiaotang Fan
- Department of Developmental Neuropsychology, School of Psychology, Third Military Medical University, Chongqing, China
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27
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Copping NA, Christian SGB, Ritter DJ, Islam MS, Buscher N, Zolkowska D, Pride MC, Berg EL, LaSalle JM, Ellegood J, Lerch JP, Reiter LT, Silverman JL, Dindot SV. Neuronal overexpression of Ube3a isoform 2 causes behavioral impairments and neuroanatomical pathology relevant to 15q11.2-q13.3 duplication syndrome. Hum Mol Genet 2017; 26:3995-4010. [PMID: 29016856 PMCID: PMC5886211 DOI: 10.1093/hmg/ddx289] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/21/2017] [Accepted: 07/10/2017] [Indexed: 01/07/2023] Open
Abstract
Maternally derived copy number gains of human chromosome 15q11.2-q13.3 (Dup15q syndrome or Dup15q) cause intellectual disability, epilepsy, developmental delay, hypotonia, speech impairments, and minor dysmorphic features. Dup15q syndrome is one of the most common and penetrant chromosomal abnormalities observed in individuals with autism spectrum disorder (ASD). Although ∼40 genes are located in the 15q11.2-q13.3 region, overexpression of the ubiquitin-protein E3A ligase (UBE3A) gene is thought to be the predominant molecular cause of the phenotypes observed in Dup15q syndrome. The UBE3A gene demonstrates maternal-specific expression in neurons and loss of maternal UBE3A causes Angelman syndrome, a neurodevelopmental disorder with some overlapping neurological features to Dup15q. To directly test the hypothesis that overexpression of UBE3A is an important underlying molecular cause of neurodevelopmental dysfunction, we developed and characterized a mouse overexpressing Ube3a isoform 2 in excitatory neurons. Ube3a isoform 2 is conserved between mouse and human and known to play key roles in neuronal function. Transgenic mice overexpressing Ube3a isoform 2 in excitatory forebrain neurons exhibited increased anxiety-like behaviors, learning impairments, and reduced seizure thresholds. However, these transgenic mice displayed normal social approach, social interactions, and repetitive motor stereotypies that are relevant to ASD. Reduced forebrain, hippocampus, striatum, amygdala, and cortical volume were also observed. Altogether, these findings show neuronal overexpression of Ube3a isoform 2 causes phenotypes translatable to neurodevelopmental disorders.
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Affiliation(s)
- Nycole A Copping
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | | | - Dylan J Ritter
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
- Texas A&M, College Station, TX, USA
| | - M Saharul Islam
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Nathalie Buscher
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Dorota Zolkowska
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Michael C Pride
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Elizabeth L Berg
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Janine M LaSalle
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
| | - Jacob Ellegood
- The Hospital for Sick Children, Mouse Imaging Centre, Toronto, ON, Canada
| | - Jason P Lerch
- The Hospital for Sick Children, Mouse Imaging Centre, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Lawrence T Reiter
- Departments of Neurology, Pediatrics and Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Jill L Silverman
- MIND Institute, School of Medicine, University of California, Davis, Sacramento, CA, USA
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Rice NC, Rauscher NA, Langston JL, Myers TM. Behavioral intoxication following voluntary oral ingestion of tetramethylenedisulfotetramine: Dose-dependent onset, severity, survival, and recovery. Neurotoxicology 2017; 63:21-32. [PMID: 28855111 DOI: 10.1016/j.neuro.2017.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 08/22/2017] [Accepted: 08/23/2017] [Indexed: 01/13/2023]
Abstract
Tetramethylenedisulfotetramine (tetramine, or TETS) is a highly toxic rodenticide that has been responsible for over 14,000 accidental and intentional poisonings worldwide. Although the vast majority of TETS poisonings involved tainted food or drink, the laboratory in vivo studies of TETS intoxication used intraperitoneal injection or gavage for TETS exposure. Seeking to develop and characterize a more realistic model of TETS intoxication in the present study, rats were trained to rapidly and voluntarily consume a poisoned food morsel. Initially, the overt toxic effects of TETS consumption across a large range of doses were characterized, then a focused range of doses was selected for more intensive behavioral evaluation (in operant test chambers providing a variable-interval schedule of food reinforcement). The onset of intoxication following voluntary oral consumption of TETS was rapid, and clear dose-dependent response-rate suppression was observed across multiple performance measures within the operant-chamber environment. At most doses, recovery of operant performance did not occur within 30h. Food consumption and body weight changes were also dose dependent and corroborated the behavioral measures of intoxication. This voluntary oral-poisoning method with concomitant operant-behavioral assessment shows promise for future studies of TETS (and other toxic chemicals of interest) and may be extremely valuable in characterizing treatment outcomes.
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Affiliation(s)
- Nathaniel C Rice
- United States Army Medical Research Institute of Chemical Defense, 2900 Ricketts Point Rd, Aberdeen Proving Ground, MD, 21010, USA
| | - Noah A Rauscher
- United States Army Medical Research Institute of Chemical Defense, 2900 Ricketts Point Rd, Aberdeen Proving Ground, MD, 21010, USA
| | - Jeffrey L Langston
- United States Army Medical Research Institute of Chemical Defense, 2900 Ricketts Point Rd, Aberdeen Proving Ground, MD, 21010, USA
| | - Todd M Myers
- United States Army Medical Research Institute of Chemical Defense, 2900 Ricketts Point Rd, Aberdeen Proving Ground, MD, 21010, USA.
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29
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Germline Chd8 haploinsufficiency alters brain development in mouse. Nat Neurosci 2017; 20:1062-1073. [PMID: 28671691 DOI: 10.1038/nn.4592] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 05/23/2017] [Indexed: 02/06/2023]
Abstract
The chromatin remodeling gene CHD8 represents a central node in neurodevelopmental gene networks implicated in autism. We examined the impact of germline heterozygous frameshift Chd8 mutation on neurodevelopment in mice. Chd8+/del5 mice displayed normal social interactions with no repetitive behaviors but exhibited cognitive impairment correlated with increased regional brain volume, validating that phenotypes of Chd8+/del5 mice overlap pathology reported in humans with CHD8 mutations. We applied network analysis to characterize neurodevelopmental gene expression, revealing widespread transcriptional changes in Chd8+/del5 mice across pathways disrupted in neurodevelopmental disorders, including neurogenesis, synaptic processes and neuroimmune signaling. We identified a co-expression module with peak expression in early brain development featuring dysregulation of RNA processing, chromatin remodeling and cell-cycle genes enriched for promoter binding by Chd8, and we validated increased neuronal proliferation and developmental splicing perturbation in Chd8+/del5 mice. This integrative analysis offers an initial picture of the consequences of Chd8 haploinsufficiency for brain development.
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Dhamne SC, Silverman JL, Super CE, Lammers SHT, Hameed MQ, Modi ME, Copping NA, Pride MC, Smith DG, Rotenberg A, Crawley JN, Sahin M. Replicable in vivo physiological and behavioral phenotypes of the Shank3B null mutant mouse model of autism. Mol Autism 2017. [PMID: 28638591 PMCID: PMC5472997 DOI: 10.1186/s13229-017-0142-z] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Autism spectrum disorder (ASD) is a clinically and biologically heterogeneous condition characterized by social, repetitive, and sensory behavioral abnormalities. No treatments are approved for the core diagnostic symptoms of ASD. To enable the earliest stages of therapeutic discovery and development for ASD, robust and reproducible behavioral phenotypes and biological markers are essential to establish in preclinical animal models. The goal of this study was to identify electroencephalographic (EEG) and behavioral phenotypes that are replicable between independent cohorts in a mouse model of ASD. The larger goal of our strategy is to empower the preclinical biomedical ASD research field by generating robust and reproducible behavioral and physiological phenotypes in animal models of ASD, for the characterization of mechanistic underpinnings of ASD-relevant phenotypes, and to ensure reliability for the discovery of novel therapeutics. Genetic disruption of the SHANK3 gene, a scaffolding protein involved in the stability of the postsynaptic density in excitatory synapses, is thought to be responsible for a relatively large number of cases of ASD. Therefore, we have thoroughly characterized the robustness of ASD-relevant behavioral phenotypes in two cohorts, and for the first time quantified translational EEG activity in Shank3B null mutant mice. METHODS In vivo physiology and behavioral assays were conducted in two independently bred and tested full cohorts of Shank3B null mutant (Shank3B KO) and wildtype littermate control (WT) mice. EEG was recorded via wireless implanted telemeters for 7 days of baseline followed by 20 min of recording following pentylenetetrazol (PTZ) challenge. Behaviors relevant to the diagnostic and associated symptoms of ASD were tested on a battery of established behavioral tests. Assays were designed to reproduce and expand on the original behavioral characterization of Shank3B KO mice. Two or more corroborative tests were conducted within each behavioral domain, including social, repetitive, cognitive, anxiety-related, sensory, and motor categories of assays. RESULTS Relative to WT mice, Shank3B KO mice displayed a dramatic resistance to PTZ seizure induction and an enhancement of gamma band oscillatory EEG activity indicative of enhanced inhibitory tone. These findings replicated in two separate cohorts. Behaviorally, Shank3B KO mice exhibited repetitive grooming, deficits in aspects of reciprocal social interactions and vocalizations, and reduced open field activity, as well as variable deficits in sensory responses, anxiety-related behaviors, learning and memory. CONCLUSIONS Robust animal models and quantitative, replicable biomarkers of neural dysfunction are needed to decrease risk and enable successful drug discovery and development for ASD and other neurodevelopmental disorders. Complementary to the replicated behavioral phenotypes of the Shank3B mutant mouse is the new identification of a robust, translational in vivo neurophysiological phenotype. Our findings provide strong evidence for robustness and replicability of key translational phenotypes in Shank3B mutant mice and support the usefulness of this mouse model of ASD for therapeutic discovery.
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Affiliation(s)
- Sameer C Dhamne
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Jill L Silverman
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95821 USA
| | - Chloe E Super
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Stephen H T Lammers
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Mustafa Q Hameed
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Meera E Modi
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Nycole A Copping
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95821 USA
| | - Michael C Pride
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95821 USA
| | - Daniel G Smith
- Autism Speaks, Inc., Boston, MA USA.,Present address: BlackThorn Therapeutics, Inc., Cambridge, MA USA
| | - Alexander Rotenberg
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Jacqueline N Crawley
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA 95821 USA
| | - Mustafa Sahin
- F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115 USA
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Nithianantharajah J, Balasuriya GK, Franks AE, Hill-Yardin EL. Using Animal Models to Study the Role of the Gut-Brain Axis in Autism. CURRENT DEVELOPMENTAL DISORDERS REPORTS 2017; 4:28-36. [PMID: 28680792 PMCID: PMC5488132 DOI: 10.1007/s40474-017-0111-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Individuals with autism spectrum disorders (ASD) commonly also suffer from gastrointestinal (GI) dysfunction; however, few animal model studies have systematically examined both ASD and GI dysfunction. In this review, we highlight studies investigating GI dysfunction and alterations in gut microbiota in animal models of ASD with the aim of determining if routinely used microbiology and enteric neurophysiology assays could expand our understanding of the link between the two. RECENT FINDINGS Gut-brain axis research is expanding, and several ASD models demonstrate GI dysfunction. The integration of well-established assays for detecting GI dysfunction into standard behavioural testing batteries is needed. SUMMARY Advances in understanding the role of the gut-brain axis in ASD are emerging; however, we outline standard assays for investigating gut-brain axis function in rodents to strengthen future phenotyping studies. Integrating these findings to the field of animal behaviour is one of the next major challenges in autism research.
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Affiliation(s)
- Jess Nithianantharajah
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, 30 Royal Parade, Parkville, VIC 3052 Australia
| | - Gayathri K Balasuriya
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Melbourne, VIC 3083 Australia
| | - Ashley E Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Plenty Road, Bundoora, Melbourne, VIC 3086 Australia
| | - Elisa L Hill-Yardin
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Melbourne, VIC 3083 Australia
- Department of Physiology, The University of Melbourne, Corner of Royal Parade and Grattan St, Parkville, VIC 3010 Australia
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Autism-like behavior in the BTBR mouse model of autism is improved by propofol. Neuropharmacology 2017; 118:175-187. [PMID: 28341205 DOI: 10.1016/j.neuropharm.2017.03.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 02/28/2017] [Accepted: 03/20/2017] [Indexed: 01/01/2023]
Abstract
Autism spectrum disorder (ASD) is a developmental disorder that is characterized by symptoms of impaired social interactions, restricted interests and repetitive behaviors. Recent studies in humans and animal-models suggest that reduced GABAergic neurotransmission in the brain may underlie autism-related behavioral symptoms. It has been shown that propofol, a commonly used anesthetic, facilitates γ-aminobutyric acid-mediated inhibitory synaptic transmission. The present study investigated whether propofol improved autistic phenotypes in BTBR T + Itpr3tf/J (BTBR) mice, a model of idiopathic autism. We found that i.p. injection of propofol in BTBR mice significantly improved aspects of social approach and repetitive behaviors without affecting reciprocal social interactions and without any detrimental effects in C57BL/6J mice. The ability of propofol to improve autistic phenotypes in BTBR mice through GABAergic neurotransmission suggests a potential pharmacological target for interventions to treat symptoms of autism.
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Cao Z, Xu J, Hulsizer S, Cui Y, Dong Y, Pessah IN. Influence of tetramethylenedisulfotetramine on synchronous calcium oscillations at distinct developmental stages of hippocampal neuronal cultures. Neurotoxicology 2016; 58:11-22. [PMID: 27984050 DOI: 10.1016/j.neuro.2016.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 10/18/2016] [Accepted: 10/18/2016] [Indexed: 12/20/2022]
Abstract
The spatial and temporal patterns of spontaneous synchronous Ca2+ oscillations (SCOs) regulate physiological pathways that influence neuronal development, excitability, and health. Hippocampal neuronal cultures (HN) and neuron/glia co-cultures (HNG) produced from neonatal mice were loaded with Fluo-4/AM and SCOs recorded in real-time using a Fluorescence Imaging Plate Reader at different developmental stages in vitro. HNG showed an earlier onset of SCOs, with low amplitude and low frequency SCOs at 4days in vitro (DIV), whereas HN were quiescent at this point. SCO amplitude peaked at 9 DIV for both cultures. SCO network frequency peaked at 12 DIV in HN, whereas in HNG the frequency peaked at 6 DIV. SCO patterns were associated with the temporal development of neuronal networks and their ratio of glutamatergic to GABAergic markers of excitatory/inhibitory balance. HN and HNG exhibited differential responses to the convulsant tetramethylenedisulfotetramine (TETS) and were highly dependent on DIV. In HN, TETS triggered an acute rise of intracellular Ca2+ (Phase I response) only in 14 DIV and a sustained decrease of SCO frequency with increased amplitude (Phase II response) at all developmental stages. In HNG, TETS decreased the SCO frequency and increased the amplitude at 6 and 14 but not 9 DIV. There was no acute Ca2+ rise (Phase I response) in any age of HNG tested with TETS. These data demonstrated the importance of glia and developmental stage in modulating neuronal responses to TETS. Our results illustrate the applicability of the model for investigating how caged convulsants elicit abnormal network activity during the development of HN and HNG cultures in vitro.
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Affiliation(s)
- Zhengyu Cao
- State Key Laboratory of Natural Medicines & Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, China Pharmaceutical University, Nanjing, 211198, PR China; Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 95616, United States.
| | - Jian Xu
- State Key Laboratory of Natural Medicines & Jiangsu Provincial Key Laboratory for TCM Evaluation and Translational Development, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Susan Hulsizer
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 95616, United States
| | - Yanjun Cui
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 95616, United States
| | - Yao Dong
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 95616, United States
| | - Isaac N Pessah
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, 95616, United States.
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Pessah IN, Rogawski MA, Tancredi DJ, Wulff H, Zolkowska D, Bruun DA, Hammock BD, Lein PJ. Models to identify treatments for the acute and persistent effects of seizure-inducing chemical threat agents. Ann N Y Acad Sci 2016; 1378:124-136. [PMID: 27467073 DOI: 10.1111/nyas.13137] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/15/2016] [Accepted: 05/19/2016] [Indexed: 12/27/2022]
Abstract
Exposures to seizure-inducing chemical threat agents are a major public health concern. Of particular need is improved treatment to terminate convulsions and to prevent the long-term neurological sequelae in survivors. We are studying the organophosphorus cholinesterase inhibitor diisopropyl fluorophosphate (DFP) and the GABA receptor inhibitor tetramethylenedisulfotetramine (TETS), which arguably encompass the mechanistic spectrum of seizure-inducing chemical threats, with the goal of identifying therapeutic approaches with broad-spectrum efficacy. Research efforts have focused on developing translational models and translational diagnostic approaches, including (1) in vivo models of DFP- and TETS-induced seizures for studying neuropathological mechanisms and identifying treatment approaches; (2) in vivo imaging modalities for noninvasive longitudinal monitoring of neurological damage and response to therapeutic candidates; and (3) higher-throughput in vitro platforms for rapid screening of compounds to identify potential antiseizure and neuroprotective agents, as well as mechanistically relevant novel drug targets. This review summarizes our progress toward realizing these goals and discusses best practices and mechanistic insights derived from our modeling efforts.
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Affiliation(s)
- Isaac N Pessah
- Department of Molecular Biosciences, School of Veterinary Medicine
| | | | | | - Heike Wulff
- Department of Pharmacology, School of Medicine
| | | | - Donald A Bruun
- Department of Molecular Biosciences, School of Veterinary Medicine
| | - Bruce D Hammock
- Department of Entomology, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, California
| | - Pamela J Lein
- Department of Molecular Biosciences, School of Veterinary Medicine.
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Shakarjian MP, Laukova M, Velíšková J, Stanton PK, Heck DE, Velíšek L. Tetramethylenedisulfotetramine: pest control gone awry. Ann N Y Acad Sci 2016; 1378:68-79. [PMID: 27384716 DOI: 10.1111/nyas.13120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/07/2016] [Accepted: 05/10/2016] [Indexed: 01/01/2023]
Abstract
Incidences of pesticide poisonings are a significant cause of morbidity and mortality worldwide. The seizure-inducing rodenticide tetramethylenedisulfotetramine is one of the most toxic of these agents. Although banned, it has been responsible for thousands of accidental, intentional, and mass poisonings in mainland China and elsewhere. An optimal regimen for treatment of poisoning has not been established. Its facile synthesis from easily obtained starting materials, extreme potency, and lack of odor, color, or taste make it a potential chemical threat agent. This review describes the toxicologic properties of this agent, more recent advances in our understanding of its properties, and recommendations for future research.
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Affiliation(s)
- Michael P Shakarjian
- Department of Environmental Health Science, School of Health Sciences and Practice, Institute of Public Health, New York Medical College, Valhalla, New York. .,Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York. .,Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rutgers-Robert Wood Johnson Medical School, Piscataway, New Jersey.
| | - Marcela Laukova
- Department of Environmental Health Science, School of Health Sciences and Practice, Institute of Public Health, New York Medical College, Valhalla, New York.,Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Jana Velíšková
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Obstetrics and Gynecology, New York Medical College, Valhalla, New York.,Department of Neurology, New York Medical College, Valhalla, New York
| | - Patric K Stanton
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Neurology, New York Medical College, Valhalla, New York
| | - Diane E Heck
- Department of Environmental Health Science, School of Health Sciences and Practice, Institute of Public Health, New York Medical College, Valhalla, New York
| | - Libor Velíšek
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Neurology, New York Medical College, Valhalla, New York.,Department of Pediatrics, New York Medical College, Valhalla, New York
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Kazdoba TM, Hagerman RJ, Zolkowska D, Rogawski MA, Crawley JN. Evaluation of the neuroactive steroid ganaxolone on social and repetitive behaviors in the BTBR mouse model of autism. Psychopharmacology (Berl) 2016; 233:309-23. [PMID: 26525567 PMCID: PMC4703522 DOI: 10.1007/s00213-015-4115-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
Abstract
RATIONALE Abnormalities in excitatory/inhibitory neurotransmission are hypothesized to contribute to autism spectrum disorder (ASD) etiology. BTBR T (+) Itpr3 (tf) /J (BTBR), an inbred mouse strain, displays social deficits and repetitive self-grooming, offering face validity to ASD diagnostic symptoms. Reduced GABAergic neurotransmission in BTBR suggests that GABAA receptor positive allosteric modulators (PAMs) could improve ASD-relevant BTBR phenotypes. The neuroactive steroid ganaxolone acts as a PAM, displaying anticonvulsant properties in rodent epilepsy models and an anxiolytic-like profile in the elevated plus-maze. OBJECTIVES We evaluated ganaxolone in BTBR and C57BL/6J mice in standardized assays for sociability and repetitive behaviors. Open field and anxiety-related behaviors were tested as internal controls and for comparison with the existing neuroactive steroid literature. RESULTS Ganaxolone improved aspects of social approach and reciprocal social interactions in BTBR, with no effect on repetitive self-grooming, and no detrimental effects in C57BL/6J. Ganaxolone increased overall exploratory activity in BTBR and C57BL/6J in the open field, social approach, and elevated plus-maze, introducing a confound for the interpretation of social improvements. Allopregnanolone and diazepam similarly increased total entries in the elevated plus-maze, indicating that behavioral activation may be a general property of GABAA receptor PAMs in these strains. CONCLUSIONS Ganaxolone shows promise for improving sociability. In addition, ganaxolone, as well as other GABAA receptor PAMs, enhanced overall BTBR activity. The translational implications of specific sociability improvements and nonspecific behavioral activation by ganaxolone in the BTBR model remain to be determined. Future studies to explore whether PAMs provide a novel profile with unique benefits for ASD treatment will be worthwhile.
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Affiliation(s)
- Tatiana M Kazdoba
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA, 95817, USA.
| | - Randi J Hagerman
- MIND Institute, Department of Pediatrics, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Dorota Zolkowska
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Michael A Rogawski
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Jacqueline N Crawley
- MIND Institute, Department of Psychiatry and Behavioral Sciences, University of California Davis School of Medicine, Sacramento, CA, 95817, USA
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GABAB Receptor Agonist R-Baclofen Reverses Social Deficits and Reduces Repetitive Behavior in Two Mouse Models of Autism. Neuropsychopharmacology 2015; 40:2228-39. [PMID: 25754761 PMCID: PMC4613612 DOI: 10.1038/npp.2015.66] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 02/28/2015] [Accepted: 03/03/2015] [Indexed: 12/19/2022]
Abstract
Autism spectrum disorder (ASD) is diagnosed by two core behavioral criteria, unusual reciprocal social interactions and communication, and stereotyped, repetitive behaviors with restricted interests. Excitatory/inhibitory imbalance is a prominent hypothesis for the etiology of autism. The selective GABAB receptor agonist R-baclofen previously reversed social deficits and reduced repetitive behaviors in a mouse model of Fragile X syndrome, and Arbaclofen improved some clinical symptoms in some Fragile X and ASD patients. To evaluate R-baclofen in a broader range of mouse models of ASD, we tested both the R-baclofen enantiomer and the less potent S-baclofen enantiomer in two inbred strains of mice that display low sociability and/or high repetitive or stereotyped behaviors. R-baclofen treatment reversed social approach deficits in BTBR T+ Itpr3tf/J (BTBR), reduced repetitive self-grooming and high marble burying scores in BTBR, and reduced stereotyped jumping in C58/J (C58), at nonsedating doses. S-baclofen produced minimal effects at the same doses. These findings encourage investigations of R-baclofen in other preclinical model systems. Additional clinical studies may be warranted to further evaluate the hypothesis that the GABAB receptor represents a promising pharmacological target for treating appropriately stratified subsets of individuals with ASD.
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