1
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Differential and long-lasting changes in neurotransmission in the amygdala of male Wistar rats during extended amphetamine abstinence. Neuropharmacology 2022; 210:109041. [DOI: 10.1016/j.neuropharm.2022.109041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 01/12/2023]
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2
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Clinton SM, Shupe EA, Glover ME, Unroe KA, McCoy CR, Cohen JL, Kerman IA. Modeling heritability of temperamental differences, stress reactivity, and risk for anxiety and depression: Relevance to research domain criteria (RDoC). Eur J Neurosci 2021; 55:2076-2107. [PMID: 33629390 PMCID: PMC8382785 DOI: 10.1111/ejn.15158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/29/2021] [Accepted: 02/20/2021] [Indexed: 01/04/2023]
Abstract
Animal models provide important tools to study biological and environmental factors that shape brain function and behavior. These models can be effectively leveraged by drawing on concepts from the National Institute of Mental Health Research Domain Criteria (RDoC) Initiative, which aims to delineate molecular pathways and neural circuits that underpin behavioral anomalies that transcend psychiatric conditions. To study factors that contribute to individual differences in emotionality and stress reactivity, our laboratory utilized Sprague-Dawley rats that were selectively bred for differences in novelty exploration. Selective breeding for low versus high locomotor response to novelty produced rat lines that differ in behavioral domains relevant to anxiety and depression, particularly the RDoC Negative Valence domains, including acute threat, potential threat, and loss. Bred Low Novelty Responder (LR) rats, relative to their High Responder (HR) counterparts, display high levels of behavioral inhibition, conditioned and unconditioned fear, avoidance, passive stress coping, anhedonia, and psychomotor retardation. The HR/LR traits are heritable, emerge in the first weeks of life, and appear to be driven by alterations in the developing amygdala and hippocampus. Epigenomic and transcriptomic profiling in the developing and adult HR/LR brain suggest that DNA methylation and microRNAs, as well as differences in monoaminergic transmission (dopamine and serotonin in particular), contribute to their distinct behavioral phenotypes. This work exemplifies ways that animal models such as the HR/LR rats can be effectively used to study neural and molecular factors driving emotional behavior, which may pave the way toward improved understanding the neurobiological mechanisms involved in emotional disorders.
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Affiliation(s)
- Sarah M Clinton
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Elizabeth A Shupe
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Matthew E Glover
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Keaton A Unroe
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Chelsea R McCoy
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Joshua L Cohen
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, USA
| | - Ilan A Kerman
- School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.,Behavioral Health Service Line, Veterans Affairs Pittsburgh Health System, Pittsburgh, PA, USA
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3
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Zheng P, Su QP, Jin D, Yu Y, Huang XF. Prevention of Neurite Spine Loss Induced by Dopamine D2 Receptor Overactivation in Striatal Neurons. Front Neurosci 2020; 14:642. [PMID: 32655360 PMCID: PMC7324769 DOI: 10.3389/fnins.2020.00642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/25/2020] [Indexed: 11/22/2022] Open
Abstract
Psychosis has been considered a disorder of impaired neuronal connectivity. Evidence for excessive formation of dopamine D2 receptor (D2R) – disrupted in schizophrenia 1 (DISC1) complexes has led to a new perspective on molecular mechanisms involved in psychotic symptoms. Here, we investigated how excessive D2R–DISC1 complex formation induced by D2R agonist quinpirole affects neurite growth and dendritic spines in striatal neurons. Fluorescence resonance energy transfer (FRET), stochastic optical reconstruction microscopy (STORM), and cell penetrating-peptide delivery were used to study the cultured striatal neurons from mouse pups. Using these striatal neurons, our study showed that: (1) D2R interacted with DISC1 in dendritic spines, neurites and soma of cultured striatal neurons; (2) D2R and DISC1 complex accumulated in clusters in dendritic spines of striatal neurons and the number of the complex were reduced after application of TAT-D2pep; (3) uncoupling D2R–DISC1 complexes by TAT-D2pep protected neuronal morphology and dendritic spines; and (4) TAT-D2pep prevented neurite and dendritic spine loss, which was associated with restoration of expression levels of synaptophysin and PSD-95. In addition, we found that Neuropeptide Y (NPY) and GSK3β were involved in the protective effects of TAT-D2pep on the neurite spines of striatal spiny projection neurons. Thus, our results may offer a new strategy for precisely treating neurite spine deficits associated with schizophrenia.
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Affiliation(s)
- Peng Zheng
- Illawarra Health and Medical Research Institute (IHMRI) and School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - Qian Peter Su
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Dayong Jin
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Yinghua Yu
- Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, China
| | - Xu-Feng Huang
- Illawarra Health and Medical Research Institute (IHMRI) and School of Medicine, University of Wollongong, Wollongong, NSW, Australia
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4
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Abstract
The medial prefrontal cortex (mPFC) is a crucial cortical region that integrates information from numerous cortical and subcortical areas and converges updated information to output structures. It plays essential roles in the cognitive process, regulation of emotion, motivation, and sociability. Dysfunction of the mPFC has been found in various neurological and psychiatric disorders, such as depression, anxiety disorders, schizophrenia, autism spectrum disorders, Alzheimer's disease, Parkinson's disease, and addiction. In the present review, we summarize the preclinical and clinical studies to illustrate the role of the mPFC in these neurological diseases.
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Affiliation(s)
- Pan Xu
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
| | - Ai Chen
- Department of Pediatrics, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan China
| | - Yipeng Li
- Department of Biomedical Engineering, The George Washington University, Washington, District of Columbia
| | - Xuezhi Xing
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
| | - Hui Lu
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
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5
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Tellez-Merlo G, Morales-Medina JC, Camacho-Ábrego I, Juárez-Díaz I, Aguilar-Alonso P, de la Cruz F, Iannitti T, Flores G. Prenatal immune challenge induces behavioral deficits, neuronal remodeling, and increases brain nitric oxide and zinc levels in the male rat offspring. Neuroscience 2019; 406:594-605. [DOI: 10.1016/j.neuroscience.2019.02.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 12/11/2018] [Accepted: 02/12/2019] [Indexed: 12/20/2022]
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6
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Caruso JP, Susick LL, Charlton JL, Henson EL, Conti AC. Region-specific disruption of synapsin phosphorylation following ethanol administration in brain-injured mice. Brain Circ 2016; 2:183-188. [PMID: 30276296 PMCID: PMC6126228 DOI: 10.4103/2394-8108.195284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/13/2016] [Accepted: 07/18/2016] [Indexed: 11/11/2022] Open
Abstract
Introduction: Civilians and military personnel develop a range of physical and psychosocial impairments following traumatic brain injury (TBI), including alcohol abuse. As a consequence, increased rates of alcohol misuse magnify TBI-induced pathologies and impede rehabilitation efforts. Therefore, a developed understanding of the mechanisms that foster susceptibility of the injured brain to alcohol sensitivity and the response of the injured brain to alcohol is imperative for the treatment of TBI patients. Alcohol sensitivity has been demonstrated to be increased following experimental TBI and, in additional studies, regulated by presynaptic vesicle release mechanisms, including synapsin phosphorylation. Materials and Methods: Mice were exposed to controlled midline impact of the intact skull and assessed for cortical, hippocampal, and striatal expression of phosphorylated synapsin I and II in response to high-dose ethanol exposure administered 14 days following injury, a time point at which injured mice demonstrate increased sedation after ethanol exposure. Results and Discussion: Immunoblot quantitation revealed that TBI alone, compared to sham controls, significantly increased phosphorylated synapsin I and II protein expression in the striatum. In sham controls, ethanol administration significantly increased phosphorylated synapsin I and II protein expression compared to saline-treated sham controls; however, no significant increase in ethanol-induced phosphorylated synapsin I and II protein expression was observed in the striatum of injured mice compared to saline-treated TBI controls. A similar expression pattern was observed in the cortex although restricted to increases in phosphorylated synapsin II. Conclusion: These data show that increased phosphorylated synapsin expression in the injured striatum may reflect a compensatory neuroplastic response to TBI which is proposed to occur as a result of a compromised presynaptic response of the injured brain to high-dose ethanol. These results offer a mechanistic basis for the altered ethanol sensitivity observed following experimental TBI and contribute to our understanding of alcohol action in the injured brain.
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Affiliation(s)
- James P Caruso
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Laura L Susick
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Jennifer L Charlton
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Emily L Henson
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Alana C Conti
- John D. Dingell VA Medical Center and Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, 48201, USA
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7
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Solis-Gaspar C, Vazquez-Roque RA, De Jesús Gómez-Villalobos M, Flores G. Cerebrolysin improves memory and ameliorates neuronal atrophy in spontaneously hypertensive, aged rats. Synapse 2016; 70:378-89. [DOI: 10.1002/syn.21912] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Carlos Solis-Gaspar
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570, Puebla México
| | - Ruben A. Vazquez-Roque
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570, Puebla México
| | | | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570, Puebla México
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8
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Neonatal ventral hippocampus lesion changes nuclear restricted protein/brain (NRP/B) expression in hippocampus, cortex and striatum in developmental periods of rats. Neuroscience 2016; 319:59-68. [PMID: 26812035 DOI: 10.1016/j.neuroscience.2016.01.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 01/13/2016] [Accepted: 01/15/2016] [Indexed: 11/20/2022]
Abstract
Schizophrenia is conceptualized as a neurodevelopmental disorder in which developmental alterations in immature brain systems are not clear. Rats with neonatal ventral hippocampal lesions (NVHL) can exhibit schizophrenia-like behaviors, and these rats have been widely used to study the developmental mechanisms of schizophrenia. The nuclear restricted protein/brain (NRP/B) is a nuclear matrix protein that is critical for the normal development of the neuronal system. This study assessed the effect of NVHL induced by the administration of ibotenic acid on the protein expression of NRP/B in the hippocampus, cortex and striatum in pre- and post-pubertal rats. The expressions of NeuN in various developmental periods were assessed accordingly. Sprague-Dawley rat pups were administered ibotenic acid at postnatal day (PD) 7. Western blotting and an immunofluorescence staining analysis showed that the expression of NRP/B was significantly decreased in the hippocampus, cortex and striatum of the NVHL rats at PD14, 28 and 42. The expressions of NeuN were decreased accordingly. In vitro experiment showed the NRP/B knockdown can decrease the Tuj1 expression in cultured cortical neurons. The data suggest that NVHL induces a change in NRP/B expression that affects neurons in the developmental period.
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9
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McCoy CR, Golf SR, Melendez-Ferro M, Perez-Costas E, Glover ME, Jackson NL, Stringfellow SA, Pugh PC, Fant AD, Clinton SM. Altered metabolic activity in the developing brain of rats predisposed to high versus low depression-like behavior. Neuroscience 2016; 324:469-484. [PMID: 26979051 DOI: 10.1016/j.neuroscience.2016.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/27/2016] [Accepted: 03/05/2016] [Indexed: 12/14/2022]
Abstract
Individual differences in human temperament can increase the risk of psychiatric disorders like depression and anxiety. Our laboratory utilized a rat model of temperamental differences to assess neurodevelopmental factors underlying emotional behavior differences. Rats selectively bred for low novelty exploration (Low Responders, LR) display high levels of anxiety- and depression-like behavior compared to High Novelty Responder (HR) rats. Using transcriptome profiling, the present study uncovered vast gene expression differences in the early postnatal HR versus LR limbic brain, including changes in genes involved in cellular metabolism. These data led us to hypothesize that rats prone to high (versus low) anxiety/depression-like behavior exhibit distinct patterns of brain metabolism during the first weeks of life, which may reflect disparate patterns of synaptogenesis and brain circuit development. Thus, in a second experiment we examined activity of cytochrome C oxidase (COX), an enzyme responsible for ATP production and a correlate of metabolic activity, to explore functional energetic differences in the HR/LR early postnatal brain. We found that HR rats display higher COX activity in the amygdala and specific hippocampal subregions compared to LRs during the first 2 weeks of life. Correlational analysis examining COX levels across several brain regions and multiple early postnatal time points suggested desynchronization in the developmental timeline of the limbic HR versus LR brain during the first two postnatal weeks. These early divergent COX activity levels may reflect altered circuitry or synaptic activity in the early postnatal HR/LR brain, which could contribute to the emergence of their distinct behavioral phenotypes.
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Affiliation(s)
- Chelsea R McCoy
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Samantha R Golf
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Miguel Melendez-Ferro
- Department of Surgery, 1600 7 Ave S., ACC300, University of Alabama-Birmingham, AL, USA
| | - Emma Perez-Costas
- Department of Pediatrics, 1600 7 Ave S., ACC502, University of Alabama-Birmingham, AL, USA
| | - Matthew E Glover
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Nateka L Jackson
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Sara A Stringfellow
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Phyllis C Pugh
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
| | - Andrew D Fant
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill 27599, USA
| | - Sarah M Clinton
- Department of Psychiatry and Behavioral Neurobiology, 1720 7th Ave S., SC 745, University of Alabama-Birmingham AL, USA
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10
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Flores G, Morales-Medina JC, Diaz A. Neuronal and brain morphological changes in animal models of schizophrenia. Behav Brain Res 2016; 301:190-203. [DOI: 10.1016/j.bbr.2015.12.034] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/15/2015] [Accepted: 12/18/2015] [Indexed: 12/14/2022]
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11
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Sanchez-Vega L, Juárez I, De Jesus Gomez-Villalobos M, Flores G. Cerebrolysin reverses hippocampal neural atrophy in a mice model of diabetes mellitus type 1. Synapse 2015; 69:326-35. [DOI: 10.1002/syn.21819] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/29/2015] [Accepted: 03/22/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Lizzette Sanchez-Vega
- Laboratorio De Neuropsiquiatría; Instituto De Fisiología, Universidad Autónoma De Puebla; Puebla México
| | - Ismael Juárez
- Facultad De Estomatología; Universidad Autónoma De Puebla; Puebla México
| | | | - Gonzalo Flores
- Laboratorio De Neuropsiquiatría; Instituto De Fisiología, Universidad Autónoma De Puebla; Puebla México
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12
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Lazcano Z, Solis O, Díaz A, Brambila E, Aguilar-Alonso P, Guevara J, Flores G. Dendritic morphology changes in neurons from the ventral hippocampus, amygdala and nucleus accumbens in rats with neonatal lesions into the prefrontal cortex. Synapse 2015; 69:314-25. [DOI: 10.1002/syn.21815] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Zayda Lazcano
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
| | - Oscar Solis
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
| | - Alfonso Díaz
- Facultad de Ciencias Químicas; Universidad Autónoma de Puebla; Puebla México
| | - Eduardo Brambila
- Facultad de Ciencias Químicas; Universidad Autónoma de Puebla; Puebla México
| | | | - Jorge Guevara
- Department de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México. D.F.; México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología, Universidad Autónoma de Puebla; Puebla México
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13
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Lazcano Z, Solis O, Bringas ME, Limón D, Diaz A, Espinosa B, García-Peláez I, Flores G, Guevara J. Unilateral injection of Aβ25-35in the hippocampus reduces the number of dendritic spines in hyperglycemic rats. Synapse 2014; 68:585-594. [DOI: 10.1002/syn.21770] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 07/15/2014] [Indexed: 02/05/2023]
Affiliation(s)
- Zayda Lazcano
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Oscar Solis
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - María Elena Bringas
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Daniel Limón
- Laboratorio de Neurofarmacología, Facultad de Ciencias Químicas; Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Alfonso Diaz
- Departamento de Farmacia, Facultad de Ciencias Químicas; Benemérita Universidad Autónoma de Puebla; Puebla México
- Laboratorio Experimental de Enfermedades Neurodegenerativas; Instituto Nacional de Neurología y Neurocirugía; Ciudad de México Distrito Federal México
- Departamento de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
| | - Blanca Espinosa
- Laboratorio de Bioquímica, Instituto Nacional de Enfermedades Respiratorias; Ciudad de México Distrito Federal México
| | - Isabel García-Peláez
- Departamento de Biología Celular y Tisular, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología Benemérita Universidad Autónoma de Puebla; Puebla México
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina; Universidad Nacional Autónoma de México; Ciudad de México Distrito Federal México
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14
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Flores G, Atzori M. The Potential of Cerebrolysin in the Treatment of Schizophrenia. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/pp.2014.57079] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Neonatal olfactory bulbectomy enhances locomotor activity, exploratory behavior and binding of NMDA receptors in pre-pubertal rats. Neuroscience 2013; 259:84-93. [PMID: 24295633 DOI: 10.1016/j.neuroscience.2013.11.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 11/20/2013] [Accepted: 11/23/2013] [Indexed: 12/21/2022]
Abstract
In this study, we investigated the effect of neonatal olfactory bulbectomy (nOBX) on behavioral paradigms related to olfaction such as exploratory behavior, locomotor activity in a novel environment and social interaction. We also studied the effect of nOBX on the activity of the N-methyl-d-aspartate (NMDA) subtype of glutamate receptors during development. The behavioral effects of nOBX (postnatal day 7, PD7) were investigated in pre- (PD30) and post-pubertal (PD60) Wistar rats. NMDA receptor activity was measured with [(125)I]MK-801 in the brain regions associated with the olfactory circuitry. A significant increase in the novelty-induced locomotion was seen in the pre-pubertal nOBX rats. Although the locomotor effect was less marked than in pre-pubertal rats, the nOBX rats tested post-pubertally failed to habituate to the novel situation as quickly as the sham- and normal- controls. Pre-pubertally, the head-dipping behavior was enhanced in nOBX rats compared with sham-operated and normal controls, while normal exploratory behavior was observed between groups in adulthood. In contrast, social interaction was increased in post-pubertal animals that underwent nOBX. Both pre- and post-pubertal nOBX rats recovered olfaction. Interestingly, pre-pubertal rats showed a significant increase in the [(125)I]MK-801 binding in the piriform cortex, dorsal hippocampus, inner and outer layers of the frontal cortex and outer layer of the cingulate cortex. At post-pubertal age, no significant differences in [(125)I]MK-801 binding were observed between groups at any of the brain regions analyzed. These results suggest that nOBX produces pre-pubertal behavioral disturbances and NMDA receptor changes that are transitory with recovery of olfaction early in adulthood.
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16
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Camacho-Abrego I, Tellez-Merlo G, Melo AI, Rodríguez-Moreno A, Garcés L, De La Cruz F, Zamudio S, Flores G. Rearrangement of the dendritic morphology of the neurons from prefrontal cortex and hippocampus after subthalamic lesion in Sprague-Dawley rats. Synapse 2013; 68:114-26. [DOI: 10.1002/syn.21722] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 09/16/2013] [Accepted: 09/20/2013] [Indexed: 01/31/2023]
Affiliation(s)
- Israel Camacho-Abrego
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología; Universidad Autónoma de Puebla; CP: 72570, Puebla Puebla México
- Departamento de Fisiología; Escuela Nacional de Ciencias Biológicas; Instituto Politécnico Nacional; México D. F. México
| | - Gullermina Tellez-Merlo
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología; Universidad Autónoma de Puebla; CP: 72570, Puebla Puebla México
| | - Angel I. Melo
- Centro de Investigación en Reproducción Animal; CINVESTAV-Universidad Autónoma de Tlaxcala; Tlaxcala México
| | | | - Linda Garcés
- Departamento de Fisiología; Escuela Nacional de Ciencias Biológicas; Instituto Politécnico Nacional; México D. F. México
| | - Fidel De La Cruz
- Departamento de Fisiología; Escuela Nacional de Ciencias Biológicas; Instituto Politécnico Nacional; México D. F. México
| | - Sergio Zamudio
- Departamento de Fisiología; Escuela Nacional de Ciencias Biológicas; Instituto Politécnico Nacional; México D. F. México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría; Instituto de Fisiología; Universidad Autónoma de Puebla; CP: 72570, Puebla Puebla México
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17
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Vázquez-Roque RA, Ubhi K, Masliah E, Flores G. Chronic cerebrolysin administration attenuates neuronal abnormalities in the basolateral amygdala induced by neonatal ventral hippocampus lesion in the rat. Synapse 2013; 68:31-8. [DOI: 10.1002/syn.21718] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 09/07/2013] [Indexed: 01/02/2023]
Affiliation(s)
- Rubén Antonio Vázquez-Roque
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología; Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570 Puebla México
| | - Kiren Ubhi
- Department of Neurosciences; University of California; San Diego, La Jolla California 92093-0624
| | - Eliezer Masliah
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología; Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570 Puebla México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología; Universidad Autónoma de Puebla; 14 Sur 6301, CP 72570 Puebla México
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18
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Villalba RM, Smith Y. Differential striatal spine pathology in Parkinson's disease and cocaine addiction: a key role of dopamine? Neuroscience 2013; 251:2-20. [PMID: 23867772 DOI: 10.1016/j.neuroscience.2013.07.011] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 07/03/2013] [Indexed: 01/19/2023]
Abstract
In the striatum, the dendritic tree of the two main populations of projection neurons, called "medium spiny neurons (MSNs)", are covered with spines that receive glutamatergic inputs from the cerebral cortex and thalamus. In Parkinson's disease (PD), striatal MSNs undergo an important loss of dendritic spines, whereas aberrant overgrowth of striatal spines occurs following chronic cocaine exposure. This review examines the possibility that opposite dopamine dysregulation is one of the key factors that underlies these structural changes. In PD, nigrostriatal dopamine degeneration results in a significant loss of dendritic spines in the dorsal striatum, while rodents chronically exposed to cocaine and other psychostimulants, display an increase in the density of "thin and immature" spines in the nucleus accumbens (NAc). In rodent models of PD, there is evidence that D2 dopamine receptor-containing MSNs are preferentially affected, while D1-positive cells are the main targets of increased spine density in models of addiction. However, such specificity remains to be established in primates. Although the link between the extent of striatal spine changes and the behavioral deficits associated with these disorders remains controversial, there is unequivocal evidence that glutamatergic synaptic transmission is significantly altered in both diseased conditions. Recent studies have suggested that opposite calcium-mediated regulation of the transcription factor myocyte enhancer factor 2 (MEF2) function induces these structural defects. In conclusion, there is strong evidence that dopamine is a major, but not the sole, regulator of striatal spine pathology in PD and addiction to psychostimulants. Further studies of the role of glutamate and other genes associated with spine plasticity in mediating these effects are warranted.
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Affiliation(s)
- R M Villalba
- Yerkes National Primate Research Center, Emory University, 954, Gatewood Road NE, Atlanta, GA 30329, USA; UDALL Center of Excellence for Parkinson's Disease, Emory University, 954, Gatewood Road NE, Atlanta, GA 30329, USA.
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Dendritic morphology changes in neurons from the prefrontal cortex, hippocampus and nucleus accumbens in rats after lesion of the thalamic reticular nucleus. Neuroscience 2012; 223:429-38. [DOI: 10.1016/j.neuroscience.2012.07.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 07/01/2012] [Accepted: 07/20/2012] [Indexed: 12/22/2022]
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Alcántara-González F, Mendoza-Perez CR, Zaragoza N, Juarez I, Arroyo-García LE, Gamboa C, De La Cruz F, Zamudio S, Garcia-Dolores F, Flores G. Combined administration of cerebrolysin and donepezil induces plastic changes in prefrontal cortex in aged mice. Synapse 2012; 66:938-49. [DOI: 10.1002/syn.21588] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/02/2012] [Accepted: 07/14/2012] [Indexed: 12/24/2022]
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Prefrontal dopamine release and sensory-specific satiety altered in rats with neonatal ventral hippocampal lesions. Behav Brain Res 2012; 231:97-104. [DOI: 10.1016/j.bbr.2012.02.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 02/23/2012] [Accepted: 02/26/2012] [Indexed: 11/15/2022]
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Vázquez-Roque RA, Solis O, Camacho-Abrego I, Rodríguez-Moreno A, Cruz FDL, Zamudio S, Flores G. Dendritic morphology of neurons in prefrontal cortex and ventral hippocampus of rats with neonatal amygdala lesion. Synapse 2012; 66:373-82. [PMID: 22170567 DOI: 10.1002/syn.21517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 11/21/2011] [Indexed: 01/12/2023]
Abstract
Neonatal basolateral amygdala (nBLA) lesions in rats have been widely used as a neurodevelopmental model that mimics schizophrenia-like behaviors. Recently, we reported that nBLA lesions result in significant decreases in the dendritic spine number of layer 3 prefrontal cortex (PFC) pyramidal cells and medium spiny neurons of the nucleus accumbens (NAcc), which all changes after puberty. At present, we aimed to evaluate the effect of this lesion in pyramidal neurons of CA1 of the ventral hippocampus (VH) and layer 5 of the PFC. In order to assess the effects of nBLA lesions on the dendritic morphology of the PFC and VH neurons, we carried out nBLA lesions in rats on postnatal day (PD) 7, and then we studied the dendritic morphology of these two limbic subregions at prepubertal (PD35) and postpubertal (PD60) ages. Dendritic characteristics were measured by Golgi-Cox procedure followed by Sholl analysis. We also evaluated the effects of nBLA lesions on the prepulse inhibition (PPI) and acoustic startle responses. The nBLA lesion induced a significant increase in dendritic length of layer 5 pyramidal neurons of the PFC at both ages, with a decrease in the dendritic spines density after puberty. The spine density of CA1 VH pyramidal neurons showed significant decreases at both ages. PPI was decreased in adulthood in the animals with an nBLA lesion. These results show that an nBLA lesion alters the dendritic morphology at the level of the PFC and VH in distinct ways before puberty, suggesting a disconnection between these limbic structures at an early age, and increasing our understanding of the implications of the VH in early amygdala dysfunction in schizophrenia.
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Affiliation(s)
- Rubén Antonio Vázquez-Roque
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570 Puebla, México
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Abstract
BACKGROUND/AIM Nucleus accumbens is a part of the ventral striatum also known as a drug active brain region, especially related with drug addiction. The aim of the study was to investigate the Golgi morphology of the nucleus accumbens neurons. METHODS The study was performed on the frontal and sagittal sections of 15 human brains by the Golgi Kopsch method. We classified neurons in the human nucleus accumbens according to their morphology and size into four types: type I--fusiform neurons; type II--fusiform neurons with lateral dendrite, arising from a part of the cell body; type III--pyramidal-like neuron; type IV--multipolar neuron. The medium spiny neurons, which are mostly noted regarding to the drug addictive conditions of the brain, correspond to the type IV--multipolar neurons. RESULTS Two regions of human nucleus accumbens could be clearly recognized on Nissl and Golgi preparations each containing different predominant neuronal types. Central part of nucleus accumbens, core region, has a low density of impregnated neurons with predominant type III, pyramidal-like neurons, with spines on secondary branches and rare type IV, multipolar neurons. Contrary to the core, peripheral region, shell of nucleus, has a high density of impregnated neurons predominantly contained of type I and type IV--multipolar neurons, which all are rich in spines on secondary and tertiary dendritic branches. CONCLUSION Our results indicate great morphological variability of human nucleus accumbens neurons. This requires further investigations and clarifying clinical significance of this important brain region.
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Juárez I, González DJ, Mena R, Flores G. The chronic administration of cerebrolysin induces plastic changes in the prefrontal cortex and dentate gyrus in aged mice. Synapse 2011; 65:1128-35. [DOI: 10.1002/syn.20950] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 04/03/2011] [Indexed: 12/11/2022]
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Sánchez F, Gómez-Villalobos MDJ, Juarez I, Quevedo L, Flores G. Dendritic morphology of neurons in medial prefrontal cortex, hippocampus, and nucleus accumbens in adult SH rats. Synapse 2010; 65:198-206. [DOI: 10.1002/syn.20837] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Alcantara-Gonzalez F, Juarez I, Solis O, Martinez-Tellez I, Camacho-Abrego I, Masliah E, Mena R, Flores G. Enhanced dendritic spine number of neurons of the prefrontal cortex, hippocampus, and nucleus accumbens in old rats after chronic donepezil administration. Synapse 2010; 64:786-93. [PMID: 20336627 PMCID: PMC2948955 DOI: 10.1002/syn.20787] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In Alzheimer's disease brains, morphological changes in the dendrites of pyramidal neurons of the prefrontal cortex (PFC) and hippocampus have been observed. These changes are particularly reflected in the decrement of both the dendritic tree and spine number. Donepezil is a potent and selective acetylcholinesterase inhibitor used in the treatment of Alzheimer's disease. We have studied the effect of oral administration of this drug on the morphology of neuronal cells from the brain of aged rats. We examined dendrites of pyramidal neurons of the PFC, dorsal or ventral hippocampus (VH), and medium spiny neurons of the nucleus accumbens (NAcc). Donepezil (1 mg/kg, vo) was administrated every day for 60 days to rats aged 10 and 18 months. Dendritic morphology was studied by the Golgi-Cox stain procedure followed by Sholl analysis at 12 and 20 months ages, respectively. In all Donepezil-treated rats, a significant increment of the dendritic spines number in pyramidal neurons of the PFC and dorsal hippocampus was observed. However, pyramidal neurons of the VH and medium spiny cells of the NAcc only showed an increase in the number of their spines in 12-month-old rats. Our results suggest that Donepezil prevents the alterations of the neuronal dendrite morphology caused by aging.
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Affiliation(s)
- Faviola Alcantara-Gonzalez
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
| | - Ismael Juarez
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
| | - Oscar Solis
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
| | - Isaura Martinez-Tellez
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
| | - Israel Camacho-Abrego
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
| | - Eliezer Masliah
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093-0624, USA
| | - Raul Mena
- Departamento de Fisiología, Biofísica y Neurociencias, CINVESTAV-IPN, México D.F., México
| | - Gonzalo Flores
- Laboratorio de Neuropsiquiatría, Instituto de Fisiología, Universidad Autónoma de Puebla. 14 Sur 6301, CP: 72570, Puebla, México
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Monroy E, Hernández-Torres E, Flores G. Maternal separation disrupts dendritic morphology of neurons in prefrontal cortex, hippocampus, and nucleus accumbens in male rat offspring. J Chem Neuroanat 2010; 40:93-101. [DOI: 10.1016/j.jchemneu.2010.05.005] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Revised: 05/17/2010] [Accepted: 05/17/2010] [Indexed: 10/19/2022]
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Neuronal-immune interactions in mediating stress effects in the etiology and course of schizophrenia: role of the amygdala in developmental co-ordination. Med Hypotheses 2010; 76:54-60. [PMID: 20843610 DOI: 10.1016/j.mehy.2010.08.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Accepted: 08/10/2010] [Indexed: 11/24/2022]
Abstract
Stress, in its many forms, is long associated with the etiology and course of schizophrenia. The mechanisms mediating the impacts of stress are not fully elucidated. Here it is proposed that stress induced cortisol alters kynurenic acid (KA) and quinolinic acid (QA) in the cortex and amygdala/striatum, respectively. These effects are significantly modulated by BAG-1 (bcl-2 associated anthanogene) and involve ROS, IL-18, and the induction of IDO (indoleamine 2,3-dioxygenase). The kynurenine pathway (KP) products response to stress seems to mediate both prenatal etiology and symptom course in adulthood. It is suggested that the effects of cortisol and quinolinic acid in the amygdala, coupled to an increase in dopamine efflux, mediate amygdala driven developmental changes in the cortex and VTA/N.Accumbens junction. This change in patterned brain activity co-ordinates alterations in motivated behaviour and thought outputs. Such developmental alterations determine changes in sensory-amygdala interactions, readily allowing developmental links to changes in lateral inhibition and pre-pulse inhibition. Decreases in vitamin D3 and melatonin further potentiate such stress induced changes. The likely involvement of glia in mediating increases in the KP products suggests that adaptation to stress is driven by neuronal activity as a form of glia to glia communication.
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