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Penna DBDS, Gumiéro Costa S, Dos Santos-Rodrigues A, Pandolfo P. The association of caffeine and nandrolone decanoate modulates aversive memory and nociception in rats. Brain Res 2024; 1837:148937. [PMID: 38615923 DOI: 10.1016/j.brainres.2024.148937] [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: 01/29/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Caffeine and anabolic-androgenic steroids (AAS) are commonly used to improve muscle mass and athletic performance. Nandrolone Decanoate (ND) is one of the most abused AAS worldwide, leading to behavioral changes in both humans and rodents. Caffeine, the most widely consumed psychostimulant globally, is present in various thermogenic and gym supplements. Low and moderate doses of caffeine antagonize adenosine receptors and have been linked to improved memory and pain relief. We have previously demonstrated that consuming caffeine prevents the risk-taking behavior triggered by nandrolone. In this study, we aimed to investigate the long-term effects of ND and caffeine, either alone or in combination, on passive avoidance memory and nociception. We used the step-down and hot-plate tasks in male and female Lister Hooded rats. Our results confirmed the antinociceptive effect of caffeine and indicated that chronic administration of the ND-caffeine association promotes the evocation of aversive memory in female rats.
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Affiliation(s)
- Daniel Bussinger de Souza Penna
- Institute of Biomedical Sciences, Program of Biomedical Sciences: Physiology and Pharmacology, Federal Fluminense University, Niteroi, Brazil; Institute of Biology, Program of Neurosciences, Federal Fluminense University, Niteroi, Brazil
| | - Samara Gumiéro Costa
- Institute of Biomedical Sciences, Program of Biomedical Sciences: Physiology and Pharmacology, Federal Fluminense University, Niteroi, Brazil
| | | | - Pablo Pandolfo
- Institute of Biomedical Sciences, Program of Biomedical Sciences: Physiology and Pharmacology, Federal Fluminense University, Niteroi, Brazil; Institute of Biology, Program of Neurosciences, Federal Fluminense University, Niteroi, Brazil.
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2
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Dessart M, Lazzari CR, Guerrieri FJ. Habituation leads to short but not long term memory formation in mosquito larvae. JOURNAL OF INSECT PHYSIOLOGY 2024; 155:104650. [PMID: 38777077 DOI: 10.1016/j.jinsphys.2024.104650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 03/21/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024]
Abstract
In animals, memory allows to remember important locations and conserve energy by not responding to irrelevant stimuli. However, memory formation and maintenance are metabolically costly, making it worthwhile to understand the mechanisms underlying different types of memory and their adaptive value. In this study, we investigated the memory persistence of Aedes aegypti mosquito larvae, after habituation to a visual stimulus. We used an automated tracking system for quantifying the response of mosquito larvae to the passage of a shadow, simulating an approaching predator. First, we compared different retention times, from 4 min to 24 h, and found that mosquito larvae only exhibited memory capabilities less than 3 h after training. Secondly, we investigated the role of inter-trial intervals in memory formation. In contrast to other aquatic invertebrates, mosquito larvae showed no long-term memory even at long inter-trial intervals (i.e., 5 min and 10 min). Our results are discussed in relation to the ecological constraints.
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Affiliation(s)
- Martin Dessart
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - University de Tours, Parc Grandmont, 37200 Tours, France.
| | - Claudio R Lazzari
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - University de Tours, Parc Grandmont, 37200 Tours, France
| | - Fernando J Guerrieri
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - University de Tours, Parc Grandmont, 37200 Tours, France.
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3
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Salgado-Puga K, Rothschild G. Exposure to sounds during sleep impairs hippocampal sharp wave ripples and memory consolidation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.22.568283. [PMID: 38045371 PMCID: PMC10690295 DOI: 10.1101/2023.11.22.568283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Sleep is critical for the consolidation of recent experiences into long-term memories. As a key underlying neuronal mechanism, hippocampal sharp-wave ripples (SWRs) occurring during sleep define periods of hippocampal reactivation of recent experiences and have been causally linked with memory consolidation. Hippocampal SWR-dependent memory consolidation during sleep is often referred to as occurring during an "offline" state, dedicated to processing internally generated neural activity patterns rather than external stimuli. However, the brain is not fully disconnected from the environment during sleep. In particular, sounds heard during sleep are processed by a highly active auditory system which projects to brain regions in the medial temporal lobe, reflecting an anatomical pathway for sound modulation of hippocampal activity. While neural processing of salient sounds during sleep, such as those of a predator or an offspring, is evolutionarily adaptive, whether ongoing processing of environmental sounds during sleep interferes with SWR-dependent memory consolidation remains unknown. To address this question, we used a closed-loop system to deliver non-waking sound stimuli during or following SWRs in sleeping rats. We found that exposure to sounds during sleep suppressed the ripple power and reduced the rate of SWRs. Furthermore, sounds delivered during SWRs (On-SWR) suppressed ripple power significantly more than sounds delivered 2 seconds after SWRs (Off-SWR). Next, we tested the influence of sound presentation during sleep on memory consolidation. To this end, SWR-triggered sounds were applied during sleep sessions following learning of a conditioned place preference paradigm, in which rats learned a place-reward association. We found that On-SWR sound pairing during post-learning sleep induced a complete abolishment of memory retention 24 h following learning, while leaving memory retention immediately following sleep intact. In contrast, Off-SWR pairing weakened memory 24 h following learning as well as immediately following learning. Notably, On-SWR pairing induced a significantly larger impairment in memory 24 h after learning as compared to Off-SWR pairing. Together, these findings suggest that sounds heard during sleep suppress SWRs and memory consolidation, and that the magnitude of these effects are dependent on sound-SWR timing. These results suggest that exposure to environmental sounds during sleep may pose a risk for memory consolidation processes.
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Dalto JF, Medina JH. Time-dependent inhibition of Rac1 in the VTA enhances long-term aversive memory: implications in active forgetting mechanisms. Sci Rep 2023; 13:13507. [PMID: 37598223 PMCID: PMC10439914 DOI: 10.1038/s41598-023-40434-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023] Open
Abstract
The fate of memories depends mainly on two opposing forces: the mechanisms required for the storage and maintenance of memory and the mechanisms underlying forgetting, being the latter much less understood. Here, we show the effect of inhibiting the small Rho GTPase Rac1 on the fate of inhibitory avoidance memory in male rats. The immediate post-training micro-infusion of the specific Rac1 inhibitor NSC23766 (150 ng/0.5 µl/ side) into the ventral tegmental area (VTA) enhanced long-term memory at 1, 7, and 14 days after a single training. Additionally, an opposed effect occurred when the inhibitor was infused at 12 h after training while no effect was observed immediately after testing animals at 1 day. Control experiments ruled out the possibility that post-training memory enhancement was due to facilitation of memory formation since no effect was found when animals were tested at 1 h after acquisition and no memory enhancement was observed after the formation of a weak memory. Immediate post-training micro-infusion of Rac1 inhibitor into the dorsal hippocampus, or the amygdala did not affect memory. Our findings support the idea of a Rac1-dependent time-specific active forgetting mechanism in the VTA controlling the strength of a long-term aversive memory.
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Affiliation(s)
- Juliana F Dalto
- Instituto de Biología Celular y Neurociencias "Prof. Eduardo de Robertis", Facultad de Medicina, Universidad de Buenos Aires-CONICET, Paraguay 2155, 3rd Floor, C1121ABG, Buenos Aires, Argentina
| | - Jorge H Medina
- Instituto de Biología Celular y Neurociencias "Prof. Eduardo de Robertis", Facultad de Medicina, Universidad de Buenos Aires-CONICET, Paraguay 2155, 3rd Floor, C1121ABG, Buenos Aires, Argentina.
- Instituto Tecnológico de Buenos Aires, Buenos Aires, Argentina.
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5
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Raven F, Riemersma IW, Olthuis MF, Rybakovaite I, Meijer EL, Meerlo P, Van der Zee EA, Havekes R. Cofilin overactivation improves hippocampus-dependent short-term memory. Front Behav Neurosci 2023; 17:1243524. [PMID: 37638111 PMCID: PMC10448394 DOI: 10.3389/fnbeh.2023.1243524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023] Open
Abstract
Many living organisms of the animal kingdom have the fundamental ability to form and retrieve memories. Most information is initially stored as short-term memory, which is then converted to a more stable long-term memory through a process called memory consolidation. At the neuronal level, synaptic plasticity is crucial for memory storage. It includes the formation of new spines, as well as the modification of existing spines, thereby tuning and shaping synaptic efficacy. Cofilin critically contributes to memory processes as upon activation, it regulates the shape of dendritic spines by targeting actin filaments. We previously found that prolonged activation of cofilin in hippocampal neurons attenuated the formation of long-term object-location memories. Because the modification of spine shape and structure is also essential for short-term memory formation, we determined whether overactivation of hippocampal cofilin also influences the formation of short-term memories. To this end, mice were either injected with an adeno-associated virus expressing catalytically active cofilin, or an eGFP control, in the hippocampus. We show for the first time that cofilin overactivation improves short-term memory formation in the object-location memory task, without affecting anxiety-like behavior. Surprisingly, we found no effect of cofilin overactivation on AMPA receptor expression levels. Altogether, while cofilin overactivation might negatively impact the formation of long-lasting memories, it may benefit short-term plasticity.
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Affiliation(s)
| | | | | | | | | | | | | | - Robbert Havekes
- Neurobiology Expertise Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, Netherlands
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Kanaya T, Ito R, Morizawa YM, Sasaki D, Yamao H, Ishikane H, Hiraoka Y, Tanaka K, Matsui K. Glial modulation of the parallel memory formation. Glia 2023. [PMID: 37364894 DOI: 10.1002/glia.24431] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 06/04/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023]
Abstract
Actions from glial cells could affect the readiness and efficacy of learning and memory. Using a mouse cerebellar-dependent horizontal optokinetic response motor learning paradigm, short-term memory (STM) formation during the online training period and long-term memory (LTM) formation during the offline rest period were studied. A large variability of online and offline learning efficacies was found. The early bloomers with booming STM often had a suppressed LTM formation and late bloomers with no apparent acute training effect often exhibited boosted offline learning performance. Anion channels containing LRRC8A are known to release glutamate. Conditional knockout of LRRC8A specifically in astrocytes including cerebellar Bergmann glia resulted in a complete loss of STM formation while the LTM formation during the rest period remained. Optogenetic manipulation of glial activity by channelrhodopsin-2 or archaerhodopsin-T (ArchT) during the online training resulted in enhancement or suppression of STM formation, respectively. STM and LTM are likely to be triggered simultaneously during online training, but LTM is expressed later during the offline period. STM appears to be volatile and the achievement during the online training is not handed over to LTM. In addition, we found that glial ArchT photoactivation during the rest period resulted in the augmentation of LTM formation. These data suggest that STM formation and LTM formation are parallel separate processes. Strategies to weigh more on the STM or the LTM could depend on the actions of the glial cells.
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Affiliation(s)
- Teppei Kanaya
- Super-Network Brain Physiology, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Ryo Ito
- Super-Network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Yosuke M Morizawa
- Super-Network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Daichi Sasaki
- Super-Network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Hiroki Yamao
- Super-Network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Hiroshi Ishikane
- Department of Psychology, Graduate School of Humanities, Senshu University, Kawasaki, Japan
| | - Yuichi Hiraoka
- Laboratory of Molecular Neuroscience, Medical Research Institute (MRI), Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kohichi Tanaka
- Laboratory of Molecular Neuroscience, Medical Research Institute (MRI), Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ko Matsui
- Super-Network Brain Physiology, Graduate School of Medicine, Tohoku University, Sendai, Japan
- Super-Network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
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Oliveira A, Seixas R, Pereira F, Azevedo M, Martinho R, Serrão P, Moreira-Rodrigues M. Insulin enhances contextual fear memory independently of its effect in increasing plasma adrenaline. Life Sci 2023:121881. [PMID: 37356751 DOI: 10.1016/j.lfs.2023.121881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 06/14/2023] [Accepted: 06/22/2023] [Indexed: 06/27/2023]
Abstract
AIMS Adrenaline enhances contextual fear memory consolidation possibly by activating liver β2-adrenoceptors causing transient hyperglycaemia. Contrastingly, insulin-induced hypoglycaemia may culminate in blood adrenaline increment, hidering the separation of each hormone's action in contextual fear memory. Therefore, an Ad-deficient mouse model was used aiming to investigate if contextual fear memory consolidation following insulin administration requires or not subsequent increases in plasma adrenaline, which occurs in response to insulin-induced hypoglycemia. MAIN METHODS Fear conditioning was performed in wild-type (WT) and adrenaline-deficient (Pnmt-KO) male mice (129 × 1/SvJ) treated with insulin (2 U/kg, intraperitoneal (i.p.)) or vehicle (0.9 % NaCl (i.p.)). Blood glucose was quantified. Catecholamines were quantified using HPLC with electrochemical detection. Quantitative real-time polymerase chain reaction was used to assess mRNA expression of hippocampal Nr4a1, Nr4a2, Nr4a3, and Bdnf genes. KEY FINDINGS Insulin-treated WT mice showed increased freezing behaviour when compared to vehicle-treated WT mice. Also, plasma dopamine, noradrenaline, and adrenaline increased in this group. Insulin-treated Pnmt-KO animals showed increased freezing behaviour when compared with respective vehicle. However, no changes in plasma or tissue catecholamines were identified in insulin-treated Pnmt-KO mice when compared with respective vehicle. Furthermore, insulin-treated Pnmt-KO mice presented increased Bdnf mRNA expression when compared to vehicle-treated Pnmt-KO mice. SIGNIFICANCE Concluding, enhanced freezing behaviour after insulin treatment, even in adrenaline absence, may indicate a key role of insulin in contextual fear memory. Insulin may cause central molecular changes promoting contextual fear memory formation and/or retrieval. This work may indicate a further role of insulin in the process of contextual fear memory modulation.
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Affiliation(s)
- Ana Oliveira
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal
| | - Rafaela Seixas
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal
| | - Francisca Pereira
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal
| | - Márcia Azevedo
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal
| | - Raquel Martinho
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal
| | - Paula Serrão
- Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal; Department of Biomedicine, Faculty of Medicine, University of Porto (FMUP), Porto, Portugal
| | - Mónica Moreira-Rodrigues
- Department of Immuno-physiology and Pharmacology, Laboratory of General Physiology, School of Medicine and Biomedical Sciences (ICBAS), University of Porto (UP), Porto, Portugal; Center for Drug Discovery and Innovative Medicines, University of Porto (MedInUP), Porto, Portugal.
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Fonseca-Santos B, Cazarin CA, da Silva PB, Dos Santos KP, da Rocha MCO, Báo SN, De-Souza MM, Chorilli M. Intranasal in situ gelling liquid crystal for delivery of resveratrol ameliorates memory and neuroinflammation in Alzheimer's disease. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023:102689. [PMID: 37156330 DOI: 10.1016/j.nano.2023.102689] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/03/2023] [Accepted: 04/26/2023] [Indexed: 05/10/2023]
Abstract
Alzheimer's disease (AD) is an illness that affects people aged 65 or older and affects around 6.5 million in the United States. Resveratrol is a chemical obtained from natural products and it exhibits biological activity based on inhibiting the formation, depolymerization of the amyloid, and decreasing neuroinflammation. Due to the insolubility of this compound; its incorporation in surfactant-based systems was proposed to design an intranasal formulation. A range of systems has been produced by mixing oleic acid, CETETH-20 and water. Polarised light microscopy (PLM), small angle x-ray scattering (SAXS) and transmission electron microscopy (TEM) confirm the initial liquid formulation (F) presented as microemulsion (ME). After dilution, the gelled systems were characterized as hexagonal mesophase and they showed feasibility proprieties. Pharmacological assays performed after intranasal administration showed the ability to improve learning and memory in animals, as well as remission of neuroinflammation via inhibition of interleukin.
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Affiliation(s)
- Bruno Fonseca-Santos
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo 14801-902, Brazil; Federal University of Bahia (UFBA), Health Sciences Institute, Department of Biotechnology, Salvador, Bahia 40170-115, Brazil.
| | - Camila André Cazarin
- University of Vale do Itajaí (UNIVALI), Postgraduate in Pharmaceutical Sciences, Itajaí, Santa Catarina 88302-901, Brazil
| | - Patrícia Bento da Silva
- Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasilia (UnB), Brasilia, Federal District 70910-900, Brazil
| | - Kaio Pini Dos Santos
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo 14801-902, Brazil
| | - Márcia Cristina Oliveira da Rocha
- Microscopy and Microanalysis Laboratory, Department of Cell Biology, Institute of Biological Sciences, University of Brasilia (UnB), Brasilia, Federal District 70910-900, Brazil
| | - Sônia Nair Báo
- Microscopy and Microanalysis Laboratory, Department of Cell Biology, Institute of Biological Sciences, University of Brasilia (UnB), Brasilia, Federal District 70910-900, Brazil
| | - Márcia Maria De-Souza
- University of Vale do Itajaí (UNIVALI), Postgraduate in Pharmaceutical Sciences, Itajaí, Santa Catarina 88302-901, Brazil
| | - Marlus Chorilli
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo 14801-902, Brazil.
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Rosa J, de Carvalho Myskiw J, Fiorenza NG, Furini CRG, Sapiras GG, Izquierdo I. Hippocampal cholinergic receptors and the mTOR participation in fear-motivated inhibitory avoidance extinction memory. Behav Brain Res 2023; 437:114129. [PMID: 36179804 DOI: 10.1016/j.bbr.2022.114129] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 09/07/2022] [Accepted: 09/24/2022] [Indexed: 10/14/2022]
Abstract
Evidence has demonstrated the hippocampal cholinergic system and the mammalian target of rapamycin (mTOR) participation during the memory formation of aversive events. This study assessed the role of these systems in the hippocampus for the extinction memory process by submitting male Wistar rats to fear-motivated step-down inhibitory avoidance (IA). The post-extinction session administration of the nicotinic and muscarinic cholinergic receptor antagonists, mecamylamine and scopolamine, respectively, both at doses of 2 µg/µl/side, and rapamycin, an mTOR inhibitor (0.02 µg/µl/side), into the CA1 region of the dorsal hippocampus, impaired the IA extinction memory. Furthermore, the nicotinic and muscarinic cholinergic receptor agonists, nicotine and muscarine, respectively, had a dose-dependent effect on the IA extinction memory when administered intra-CA1, immediately after the extinction session. Nicotine (0.6 µg/µl/side) and muscarine (0.02 µg/µl/side), respectively, had no effect, while the higher doses (6 and 2 µg/µl/side, respectively) impaired the IA extinction memory. Interestingly, the co-administration of muscarine at the lower dose blocked the impairment that was induced by rapamycin. This effect was not observed when nicotine at the lower dose was co-administered. These results have demonstrated the participation of the cholinergic receptors and mTOR in the hippocampus for IA extinction, and that the cholinergic agonists had a dose-dependent effect on the IA extinction memory. This study provides insights related to the behavioural aspects and the neurobiological properties underlying the early stage of fear-motivated IA extinction memory consolidation and suggests that there is hippocampal muscarinic receptor participation independent of mTOR in this memory process.
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Affiliation(s)
- Jessica Rosa
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Department of Pharmacology, School of Medicine of Ribeirao Preto, University of Sao Paulo (USP), Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil.
| | - Jociane de Carvalho Myskiw
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil; Department of Biophysics, Institute of Biosciences, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves 9500, Building 43422, Room 208 A, 91501-970 Porto Alegre, RS, Brazil
| | - Natalia Gindri Fiorenza
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Oswaldo Cruz Foundation (FIOCRUZ), Branch Ceara, 60760-000 Eusebio, CE, Brazil
| | - Cristiane Regina Guerino Furini
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil; Laboratory of Cognition and Memory Neurobiology, Brain Institute, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, 3rd Floor, 90610-000 Porto Alegre, RS, Brazil
| | - Gerson Guilherme Sapiras
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; Clinical Hospital of Passo Fundo (HCPF), Tiradentes 295, 99010-260 Passo Fundo, RS, Brazil
| | - Ivan Izquierdo
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Ipiranga 6690, Floor 2, 90610-600 Porto Alegre, RS, Brazil; National Institute of Translational Neuroscience (INNT), National Research Council of Brazil, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, RJ, Brazil
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Abstract
Bee memory has been well characterized in laboratory experiments, but its relevance for foraging in an ecological context is less well studied. A new study shows that short-term memory in bumble bees correlates with springtime foraging efficiency, when floral resources are abundant, but not with summer foraging efficiency, when resources are scarce.
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Affiliation(s)
- Martin Giurfa
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative (CBI), University of Toulouse, CNRS, UPS, 31062 Toulouse cedex 9, France; Institut Universitaire de France (IUF), Paris, France. martin.giurfa,@,univ-tlse3.fr
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11
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Fernández-Rubio G, Carlomagno F, Vuust P, Kringelbach ML, Bonetti L. Associations between abstract working memory abilities and brain activity underlying long-term recognition of auditory sequences. PNAS NEXUS 2022; 1:pgac216. [PMID: 36714830 PMCID: PMC9802106 DOI: 10.1093/pnasnexus/pgac216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 09/26/2022] [Indexed: 02/01/2023]
Abstract
Memory is a complex cognitive process composed of several subsystems, namely short- and long-term memory and working memory (WM). Previous research has shown that adequate interaction between subsystems is crucial for successful memory processes such as encoding, storage, and manipulation of information. However, few studies have investigated the relationship between different subsystems at the behavioral and neural levels. Thus, here we assessed the relationship between individual WM abilities and brain activity underlying the recognition of previously memorized auditory sequences. First, recognition of previously memorized versus novel auditory sequences was associated with a widespread network of brain areas comprising the cingulate gyrus, hippocampus, insula, inferior temporal cortex, frontal operculum, and orbitofrontal cortex. Second, we observed positive correlations between brain activity underlying auditory sequence recognition and WM. We showed a sustained positive correlation in the medial cingulate gyrus, a brain area that was widely involved in the auditory sequence recognition. Remarkably, we also observed positive correlations in the inferior temporal, temporal-fusiform, and postcentral gyri, brain areas that were not strongly associated with auditory sequence recognition. In conclusion, we discovered positive correlations between WM abilities and brain activity underlying long-term recognition of auditory sequences, providing new evidence on the relationship between memory subsystems. Furthermore, we showed that high WM performers recruited a larger brain network including areas associated with visual processing (i.e., inferior temporal, temporal-fusiform, and postcentral gyri) for successful auditory memory recognition.
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Affiliation(s)
- Gemma Fernández-Rubio
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark
| | - Francesco Carlomagno
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark
- Department of Education, Psychology, Communication, University of Bari Aldo Moro, 70121 Bari BA, Italy
| | - Peter Vuust
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark
| | - Morten L Kringelbach
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark
- Centre for Eudaimonia and Human Flourishing, Linacre College, University of Oxford, Oxford OX3 9BX, UK
- Department of Psychiatry, University of Oxford, Oxford OX1 2JD, UK
| | - Leonardo Bonetti
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University & The Royal Academy of Music Aarhus/Aalborg, 8000 Aarhus, Denmark
- Centre for Eudaimonia and Human Flourishing, Linacre College, University of Oxford, Oxford OX3 9BX, UK
- Department of Psychiatry, University of Oxford, Oxford OX1 2JD, UK
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12
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Gonzalez MC, Radiske A, Rossato JI, Conde-Ocazionez S, Bevilaqua LRM, Cammarota M. Optogenetic inactivation of the medial septum impairs long-term object recognition memory formation. Mol Brain 2022; 15:50. [PMID: 35672792 PMCID: PMC9172102 DOI: 10.1186/s13041-022-00938-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/24/2022] [Indexed: 11/23/2022] Open
Abstract
Theta is one of the most prominent extracellular synchronous oscillations in the mammalian brain. Hippocampal theta relies on an intact medial septum (MS) and has been consistently recorded during the training phase of some learning paradigms, suggesting that it may be implicated in hippocampus-dependent long-term memory processing. Object recognition memory (ORM) allows animals to identify familiar items and is essential for remembering facts and events. In rodents, long-term ORM formation requires a functional hippocampus but the involvement of the MS in this process remains controversial. We found that training adult male Wistar rats in a long-term ORM-inducing learning task involving exposure to two different, but behaviorally equivalent novel stimuli objects increased hippocampal theta power, and that suppressing theta via optogenetic MS inactivation caused amnesia. Importantly, the amnesia was specific to the object the animals were exploring when the MS was inactivated. Taken together, our results indicate that the MS is necessary for long-term ORM formation and suggest that hippocampal theta activity is causally linked to this process.
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13
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Moreira AP, Vizuete AFK, Zin LEF, de Marques CO, Pacheco RF, Leal MB, Gonçalves CA. The Methylglyoxal/RAGE/NOX-2 Pathway is Persistently Activated in the Hippocampus of Rats with STZ-Induced Sporadic Alzheimer's Disease. Neurotox Res 2022; 40:395-409. [PMID: 35106732 DOI: 10.1007/s12640-022-00476-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD) is the leading cause of dementia in humans, with a high social and economic cost. AD is predominantly a sporadic disease, and the intracerebroventricular (ICV) administration of streptozotocin (STZ) has been widely used as an AD-like model of dementia. While the etiology of AD remains unknown, changes such as glucose metabolism and activation of receptors for advanced glycation end products (RAGE) seem to underlie its pathogenesis. We hypothesized that methylglyoxal, an endogenous toxin derived from the glycolytic pathway, could be the precursor of advanced glycated end products that activates RAGE and that, consequently, may activate membrane NADPH oxidase (NOX), contributing to the inflammatory status of the model and the disease. We administered ICV-STZ to Wistar rats and evaluated several neurochemical parameters in the hippocampus, particularly glyoxalase 1 (GLO-1) activity, which serves as an index of high levels of methylglyoxal, and the contents of RAGE and NOX-2, the most abundant brain NOX isoform. At the times evaluated (4 and 24 weeks after STZ), we observed cognitive deficit, increased beta-amyloid content, and increased tau phosphorylation. A persistent increase in GLO-1 activity was found, as well as increases in RAGE and NOX-2 contents, suggesting astroglial and microglial commitment. The increase in NOX-2 may reflect elevated microglial activity (confirmed by IBA-1 marker), which may contribute to the synaptic dysfunction and pruning described in the literature, both in this model and AD patients. Furthermore, reinforcing this possibility, we found a reduction in cholinergic communication in the hippocampus (as shown by decreased choline acetyltransferase), a reduction in BDNF, and an increase in TGF-β, the combination of which may result in synaptic deterioration.
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Affiliation(s)
- Ana Paula Moreira
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Adriana Fernanda K Vizuete
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Lisandra Eda Fusinato Zin
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Charlanne Oliveira de Marques
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Rafaela Ferreira Pacheco
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Miriara B Leal
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil
| | - Carlos-Alberto Gonçalves
- Laboratory of Calcium-Binding Proteins in the Central Nervous System, Postgraduate Program in Biochemistry, Universidade Federal Do Rio Grande Do Sul, Ramiro Barcelos, 2600-Anexo, Lab33, Porto Alegre, 90035-003, Brazil.
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14
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Wang T, Xu J, Xu Y, Xiao J, Bi N, Gu X, Wang HL. Gut microbiota shapes social dominance through modulating HDAC2 in the medial prefrontal cortex. Cell Rep 2022; 38:110478. [PMID: 35263606 DOI: 10.1016/j.celrep.2022.110478] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/29/2021] [Accepted: 02/08/2022] [Indexed: 12/17/2022] Open
Abstract
Social dominance is a ubiquitous phenomenon among social animals, including humans. To date, individual attributes leading to dominance (after a contest) remain largely elusive. Here, we report that socially dominant rats can be distinguished from subordinates based on their intestinal microbiota. When dysbiosis is induced, rats are predisposed to a subordinate state, while dysbiotic rats reclaim social dominance following microbiota transplantation. Winning hosts are characterized by core microbes, a majority of which are associated with butyrate production, and the sole colonization of Clostridium butyricum is sufficient to restore dominance. Regarding molecular aspects, a histone deacetylase, HDAC2, is responsive to microbial status and mediates competition outcome; however, this occurs only in a restricted population of cells in the medial prefrontal cortex (mPFC). Furthermore, HDAC2 acts by modulating synaptic activity in mPFC. Together, these findings uncover a link between commensals and host dominance, providing insight into the gut-brain mechanisms underlying dominance determination.
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Affiliation(s)
- Tian Wang
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China
| | - Jinchun Xu
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China
| | - Yi Xu
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China.
| | - Jie Xiao
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China
| | - Nanxi Bi
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China
| | - Xiaozhen Gu
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China
| | - Hui-Li Wang
- School of Food and Bioengineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China.
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15
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Mello e Souza T. Unraveling molecular and system processes for fear memory. Neuroscience 2022; 497:14-29. [DOI: 10.1016/j.neuroscience.2022.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 03/02/2022] [Accepted: 03/14/2022] [Indexed: 11/26/2022]
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16
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Nguyen TT, Nam GS, Kang JJ, Han GC, Kim JS, Dieterich M, Oh SY. The Differential Effects of Acute Right- vs. Left-Sided Vestibular Deafferentation on Spatial Cognition in Unilateral Labyrinthectomized Mice. Front Neurol 2021; 12:789487. [PMID: 34956067 PMCID: PMC8692718 DOI: 10.3389/fneur.2021.789487] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 10/29/2021] [Indexed: 12/02/2022] Open
Abstract
This study aimed to investigate the disparity in locomotor and spatial memory deficits caused by left- or right-sided unilateral vestibular deafferentation (UVD) using a mouse model of unilateral labyrinthectomy (UL) and to examine the effects of galvanic vestibular stimulation (GVS) on the deficits over 14 days. Five experimental groups were established: the left-sided and right-sided UL (Lt.-UL and Rt.-UL) groups, left-sided and right-sided UL with bipolar GVS with the cathode on the lesion side (Lt.-GVS and Rt.-GVS) groups, and a control group with sham surgery. We assessed the locomotor and cognitive-behavioral functions using the open field (OF), Y maze, and Morris water maze (MWM) tests before (baseline) and 3, 7, and 14 days after surgical UL in each group. On postoperative day (POD) 3, locomotion and spatial working memory were more impaired in the Lt.-UL group compared with the Rt.-UL group (p < 0.01, Tamhane test). On POD 7, there was a substantial difference between the groups; the locomotion and spatial navigation of the Lt.-UL group recovered significantly more slowly compared with those of the Rt.-UL group. Although the differences in the short-term spatial cognition and motor coordination were resolved by POD 14, the long-term spatial navigation deficits assessed by the MWM were significantly worse in the Lt.-UL group compared with the Rt.-UL group. GVS intervention accelerated the vestibular compensation in both the Lt.-GVS and Rt.-GVS groups in terms of improvement of locomotion and spatial cognition. The current data imply that right- and left-sided UVD impair spatial cognition and locomotion differently and result in different compensatory patterns. Sequential bipolar GVS when the cathode (stimulating) was assigned to the lesion side accelerated recovery for UVD-induced spatial cognition, which may have implications for managing the patients with spatial cognitive impairment, especially that induced by unilateral peripheral vestibular damage on the dominant side.
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Affiliation(s)
- Thanh Tin Nguyen
- Department of Neurology, Jeonbuk National University Hospital & School of Medicine, Jeonju, South Korea.,Department of Pharmacology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Gi-Sung Nam
- Department of Otorhinolaryngology-Head and Neck Surgery, Chosun University College of Medicine, Gwangju, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonju, South Korea
| | - Jin-Ju Kang
- Department of Neurology, Jeonbuk National University Hospital & School of Medicine, Jeonju, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonju, South Korea
| | - Gyu Cheol Han
- Department of Otolaryngology-Head and Neck Surgery, Gachon University of Medicine and Science, Graduate School of Medicine, Incheon, South Korea
| | - Ji-Soo Kim
- Department of Neurology, Seoul National University Bundang Hospital & School of Medicine, Seoul, South Korea
| | - Marianne Dieterich
- Department of Neurology, University Hospital, Ludwig-Maximilians-Universität, Munich, Germany.,German Center for Vertigo and Balance Disorders-IFB, University Hospital, Ludwig-Maximilians-Universität, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Sun-Young Oh
- Department of Neurology, Jeonbuk National University Hospital & School of Medicine, Jeonju, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Jeonbuk National University Hospital, Jeonju, South Korea
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17
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Lazarova M, Tancheva L, Alexandrova A, Tsvetanova E, Georgieva A, Stefanova M, Tsekova D, Vezenkov L, Kalfin R, Uzunova D, Petkova-Kirova P. Effects of New Galantamine Derivatives in a Scopolamine Model of Dementia in Mice. J Alzheimers Dis 2021; 84:671-690. [PMID: 34569967 DOI: 10.3233/jad-215165] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Alzheimer's disease (AD), a progressive neurodegenerative disorder characterized by memory loss and cognitive functions decline, is a leading cause for dementia and currently ranked as the sixth foremost cause of death. As of present, treatment of AD is symptomatic without convincing therapeutic benefits and new, effective, therapeutic agents are pursued. Due to massive loss of cholinergic neurons and decreased acetylcholine levels, cholinesterase inhibitors like galantamine, remain the backbone of pharmacological treatment of the disease. In the present study, using behavioral and biochemical methods, four newly synthesized galantamine derivatives, Gal 34, Gal 43, Gal 44, and Gal 46, were evaluated for a beneficial effect in a scopolamine model of dementia in mice. They were designed to have all the advantages of galantamine and additionally to inhibit β-secretase and exert favorable effects on plasma lipids. Behavioral tests included step-through inhibitory avoidance, T-maze, and the hole-board test, whereas biochemical evaluations involved assessment of acetylcholinesterase activity, brain monoamines levels, lipid peroxidation, catalase, glutathione peroxidase, and superoxide dismutase activities along with measurement of total glutathione. Results show that Gal 43, Gal 44, and, in particular, Gal 46 are especially effective in improving both short- and long-term memory and in the case of Gal 46 having a significant effect on exploratory activity as well. Although Gal 34 did not show behavioral effects as convincing as those of the other three galantamine derivatives, it demonstrated persuasive antioxidant and restorative capacities, making all four galantamine derivatives promising AD treatment agents and prompting further research, especially that in many of our studies they performed better than galantamine.
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Affiliation(s)
- Maria Lazarova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Lyubka Tancheva
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Albena Alexandrova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria.,National Sports Academy, Sofia, Bulgaria
| | - Elina Tsvetanova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Almira Georgieva
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | | | - Daniela Tsekova
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria
| | - Lyubomir Vezenkov
- Department of Organic Chemistry, University of Chemical Technology and Metallurgy, Sofia, Bulgaria
| | - Reni Kalfin
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Diamara Uzunova
- Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
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18
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Lycopene-Loaded Microemulsion Regulates Neurogenesis in Rats with A β-Induced Alzheimer's Disease Rats Based on the Wnt/ β-catenin Pathway. Neural Plast 2021; 2021:5519330. [PMID: 34545285 PMCID: PMC8448994 DOI: 10.1155/2021/5519330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 08/14/2021] [Accepted: 08/16/2021] [Indexed: 11/29/2022] Open
Abstract
Objective To investigate the effects of lycopene-loaded microemulsion (LME) on the cognitive function and neurogenesis in the dentate gyrus (DG) of the hippocampus and subventricular (SVZ) region of rats with amyloid β- (Aβ-) induced Alzheimer's disease (AD) and its mechanism based on the Wnt/β-catenin pathway. Methods Healthy Wistar rats were divided into four groups: the blank control (CON), AD control, traditional lycopene (LOO), and LME groups. The CON and AD groups were fed with normal saline, while the LOO group was fed with traditional lycopene, and the LME group was fed with lycopene-loaded microemulsion. Behavioral tests were performed after three weeks of gastric administration. Immunofluorescence-labeled cells were used to observe the differentiation and maturation of new nerve cells in the DG of the hippocampus and SVZ region. qRT-PCR and Western blotting detected the expression of neurogenesis genes and Wnt/β-catenin pathway-related proteins, respectively. Results On the Morris water maze test, LME rats had significantly shortened movement trajectory on the searching platform, reduced escape latency time, and increased residence time on the original platform quadrant. In addition, more LME rats crossed the platform when it was removed. Thus, LME can improve the spatial learning and memory of Aβ-induced AD rats. On qRT-PCR, LME significantly increased Reelin, Nestin, and Pax6 gene expressions, which regulate neurogenesis. Immunofluorescence showed that LME could significantly increase BrdU+, Dcx+, BrdU+/Neun+, BrdU+/Dcx+ cells in the DG and SVZ regions, thus promoting neurogenesis. LME also reduced the number of Iba1+ and Iba1+/BrdU+ cells, thus reducing the neuroinflammatory response. On Western blot, LME upregulated the Wnt/β-catenin pathway by upregulating Wnt3a, β-catenin, Disheveled (Dvl), and p-GSK3β and downregulating p-β-catenin and GSK3β. Conclusion LME attenuates cognitive impairment in Aβ-induced AD rats by promoting neurogenesis in the hippocampus and SVZ region through upregulating the Wnt/β-catenin pathway.
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19
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Kapczinski F, Nardi AE, Quevedo J. Unveiling the neurobiology of learning and memory: the lifetime accomplishments of Ivan Izquierdo (1937-2021). ACTA ACUST UNITED AC 2021. [PMID: 33852691 PMCID: PMC8352728 DOI: 10.1590/1516-4446-2021-1805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Flavio Kapczinski
- Departamento de Psiquiatria, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Mood Disorders Program, Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Antonio E Nardi
- Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro (URFJ), Rio de Janeiro, RJ, Brazil
| | - João Quevedo
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA.,Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, UTHealth, Houston, TX, USA.,Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center, Graduate School of Biomedical Sciences, UTHealth, Houston, TX, USA.,Laboratório de Psiquiatria Translacional, Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense (UNESC), Criciúma, SC, Brazil
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20
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Stress, memory, and implications for major depression. Behav Brain Res 2021; 412:113410. [PMID: 34116119 DOI: 10.1016/j.bbr.2021.113410] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 06/04/2021] [Accepted: 06/06/2021] [Indexed: 12/22/2022]
Abstract
The stress response comprises a phylogenetically conserved set of cognitive, physiological, and behavioral responses that evolved as a survival strategy. In this context, the memory of stressful events would be adaptive as it could avoid re-exposure to an adverse event, otherwise the event would be facilitated in positively stressful or non-distressful conditions. However, the interaction between stress and memory comprises complex responses, some of them which are not yet completely understood, and which depend on several factors such as the memory system that is recruited, the nature and duration of the stressful event, as well as the timing in which this interaction takes place. In this narrative review, we briefly discuss the mechanisms of the stress response, the main memory systems, and its neural correlates. Then, we show how stress, through the action of its biochemical mediators, influences memory systems and mnemonic processes. Finally, we make use of major depressive disorder to explore the possible implications of non-adaptive interactions between stress and memory to psychiatric disorders, as well as possible roles for memory studies in the field of psychiatry.
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21
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Lee SS, Adams ME. Regulation of Drosophila Long-Term Courtship Memory by Ecdysis Triggering Hormone. Front Neurosci 2021; 15:670322. [PMID: 33967686 PMCID: PMC8100193 DOI: 10.3389/fnins.2021.670322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022] Open
Abstract
Endocrine state is an important determinant of learning and memory in animals. In Drosophila, rejection of male courtship overtures by mated females leads to an aversive response manifested as courtship memory. Here we report that ecdysis triggering hormone (ETH) is an obligatory enabler of long-term courtship memory (LTM). ETH deficiency suppresses LTM, whereas augmented ETH release reduces the minimum training period required for LTM induction. ETH receptor knockdown either in the mushroom body (MB) γ lobe or in octopaminergic dorsal-anterior-lateral (DAL) neurons impairs memory performance, indicating its direct action in these brain areas. Consistent with these findings, brain exposure to ETH mobilizes calcium in MB γ lobe neuropils and DAL neurons. ETH receptor (ETHR) knockdown in the corpus allatum (CA) to create juvenile hormone (JH) deficiency also suppresses LTM, as does knockdown of the JH receptor Met in the MB γ lobe, indicating a convergence of ETH and JH signaling in this region of the brain. Our findings identify endocrine-enabled neural circuit components in the brain that are critical for persistent behavioral changes resulting from aversive social experience.
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Affiliation(s)
- Sang Soo Lee
- Neuroscience Graduate Program, University of California, Riverside, Riverside, CA, United States.,Department of Molecular, Cell, and Systems Biology, University of California, Riverside, Riverside, CA, United States
| | - Michael E Adams
- Neuroscience Graduate Program, University of California, Riverside, Riverside, CA, United States.,Department of Molecular, Cell, and Systems Biology, University of California, Riverside, Riverside, CA, United States.,Department of Entomology, University of California, Riverside, Riverside, CA, United States
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22
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Short- and Long-Term Social Recognition Memory Are Differentially Modulated by Neuronal Histamine. Biomolecules 2021; 11:biom11040555. [PMID: 33918940 PMCID: PMC8069616 DOI: 10.3390/biom11040555] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 12/12/2022] Open
Abstract
The ability of recognizing familiar conspecifics is essential for many forms of social interaction including reproduction, establishment of dominance hierarchies, and pair bond formation in monogamous species. Many hormones and neurotransmitters have been suggested to play key roles in social discrimination. Here we demonstrate that disruption or potentiation of histaminergic neurotransmission differentially affects short (STM) and long-term (LTM) social recognition memory. Impairments of LTM, but not STM, were observed in histamine-deprived animals, either chronically (Hdc−/− mice lacking the histamine-synthesizing enzyme histidine decarboxylase) or acutely (mice treated with the HDC irreversible inhibitor α-fluoromethylhistidine). On the contrary, restriction of histamine release induced by stimulation of the H3R agonist (VUF16839) impaired both STM and LTM. H3R agonism-induced amnesic effect was prevented by pre-treatment with donepezil, an acetylcholinesterase inhibitor. The blockade of the H3R with ciproxifan, which in turn augmented histamine release, resulted in a procognitive effect. In keeping with this hypothesis, the procognitive effect of ciproxifan was absent in both Hdc−/− and αFMH-treated mice. Our results suggest that brain histamine is essential for the consolidation of LTM but not STM in the social recognition test. STM impairments observed after H3R stimulation are probably related to their function as heteroreceptors on cholinergic neurons.
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23
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DA Costa JC. Professor Iván Antonio Izquierdo (1937-2021). ARQUIVOS DE NEURO-PSIQUIATRIA 2021. [PMID: 33886805 DOI: 10.1590/0004-282x-anp-2021-m001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Nesari A, Mansouri MT, Khodayar MJ, Rezaei M. Preadministration of high-dose alpha-tocopherol improved memory impairment and mitochondrial dysfunction induced by proteasome inhibition in rat hippocampus. Nutr Neurosci 2021; 24:119-129. [PMID: 31084475 DOI: 10.1080/1028415x.2019.1601888] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Objective: The ubiquitin-proteasome system plays a key role in memory consolidation. Proteasome inhibition and free radical-induced neural damage were implicated in neurodegenerative states. In this study, it was tested whether alpha-tocopherol (αT) in low and high doses could improve the long-term memory impairment induced by proteasome inhibition and protects against hippocampal oxidative stress. Methods: Alpha-tocopherol (αT) (60, 200 mg/kg, i.p. for 5 days) was administered to rats with memory deficit and hippocampal oxidative stress induced by bilateral intra-hippocampal injection of lactacystin (32 ng/μl) and mitochondrial evaluations were performed for improvement assessments. Results: The results showed that lactacystin significantly reduced the passive avoidance memory performance and increased the level of malondialdehyde (MDA), reactive oxygen species (ROS) and diminished the mitochondrial membrane potential (MMP) in the rat hippocampus. Furthermore, Intraperitoneal administration of αT significantly increased the passive avoidance memory, glutathione content and reduced ROS, MDA levels and impaired MMP. Conclusions: The results suggested that αT has neuroprotective effects against lactacystin-induced oxidative stress and memory impairment via the enhancement of hippocampal antioxidant capacity and concomitant mitochondrial sustainability. This finding shows a way to prevent and also to treat neurodegenerative diseases associated with mitochondrial impairment.
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Affiliation(s)
- Ali Nesari
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Taghi Mansouri
- Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Anesthesiology, Irving Medical Center, Columbia University, New York, NY, USA
| | - Mohammad Javad Khodayar
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohsen Rezaei
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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25
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Cazarin CA, Dalmagro AP, Gonçalves AE, Boeing T, Silva LMD, Corrêa R, Klein-Júnior LC, Pinto BC, Lorenzett TS, Sobrinho TUDC, Fátima ÂD, Lage TCDA, Fernandes SA, Souza MMD. Usnic acid enantiomers restore cognitive deficits and neurochemical alterations induced by Aβ 1-42 in mice. Behav Brain Res 2020; 397:112945. [PMID: 33022354 DOI: 10.1016/j.bbr.2020.112945] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/25/2020] [Accepted: 09/26/2020] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is the most prevalent form of dementia with a complex pathophysiology not fully elucidated but with limited pharmacological treatment. The Usnic acid (UA) is a lichen secondary metabolite found in two enantiomeric forms: (R)-(+)-UA or (S)-(-)-UA, with antioxidant and anti-inflammatory potential. Thus, given the role of neuroinflammation and oxidative injury in the AD, this study aimed to investigate experimentally the cognitive enhancing and anti-neuroinflammatory effects of UA enantiomers. First, the interactions of UA on acetylcholinesterase (AChE) was assessed by molecular docking and its inhibitory capability on AChE was assessed in vitro. In vivo trials investigated the effects of UA enantiomers in mice exposed to Aβ1-42 peptide (400 pmol/mice) intracerebroventricularly (i.c.v.). For this, mice were treated orally during 24 days with (R)-(+)-UA or (S)-(-)-UA at 25, 50, or 100 mg/kg, vehicle, or donepezil (2 mg/kg). Animals were submitted to the novel object recognized, Morris water maze, and inhibitory-avoidance task to assess the cognitive deficits. Additionally, UA antioxidant capacity and neuroinflammatory biomarkers were measured at the cortex and hippocampus from mice. Our results indicated that UA enantiomers evoked complex-receptor interaction with AChE like galantamine in silico. Also, UA enantiomers improved the learning and memory of the animals and in parallel decreased the myeloperoxidase activity and the lipid hydroperoxides (LOOH) on the cortex and hippocampus and reduced the IL-1β levels on the hippocampus. In summary, UA restored the cognitive deficits, as well as the signs of LOOH and neuroinflammation induced by Aβ1-42 administration in mice.
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Affiliation(s)
- Camila Andre Cazarin
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil.
| | - Ana Paula Dalmagro
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Ana Elisa Gonçalves
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Thaise Boeing
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Luísa Mota da Silva
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Rogério Corrêa
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Luiz Carlos Klein-Júnior
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Bernardo Carlesso Pinto
- School of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | - Thaís Savoldi Lorenzett
- School of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
| | | | - Ângelo de Fátima
- Department of Chemistry, Universidade Federal de Minas Gerais, CEP 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | | | - Sergio Antonio Fernandes
- Department of Chemistry, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, Minas Gerais, Brazil
| | - Márcia Maria de Souza
- Pharmaceutical Sciences Postgraduate Program, Center of Health Sciences, Universidade do Vale do Itajaí, CEP 88302-202, Itajaí, Santa Catarina, Brazil
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26
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Neves BHS, Barbosa GPDR, Rosa ACDS, Picua SS, Gomes GM, Sosa PM, Mello-Carpes PB. On the role of the dopaminergic system in the memory deficits induced by maternal deprivation. Neurobiol Learn Mem 2020; 173:107272. [DOI: 10.1016/j.nlm.2020.107272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 05/11/2020] [Accepted: 06/28/2020] [Indexed: 01/22/2023]
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Dare LR, Garcia A, Soares CB, Lopes L, Neves BHS, Dias DV, Mello-Carpes PB. The Reversal of Memory Deficits in an Alzheimer's Disease Model Using Physical and Cognitive Exercise. Front Behav Neurosci 2020; 14:152. [PMID: 32973471 PMCID: PMC7471627 DOI: 10.3389/fnbeh.2020.00152] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 08/03/2020] [Indexed: 12/21/2022] Open
Abstract
Alzheimer’s disease (AD) is the leading cause of dementia in the world, accounting for 50–75% of cases. Currently, there is limited treatment for AD. The current pharmacological therapy minimizes symptom progression but does not reverse brain damage. Studies focused on nonpharmacological treatment for AD have been developed to act on brain plasticity and minimize the neurotoxicity caused by the amyloid-beta (Aβ) peptide. Using a neurotoxicity model induced by Aβ in rats, the present study shows that physical (PE) and cognitive exercise (CE) reverse recognition memory deficits (with a prominent effect of long-term object recognition memory), decrease hippocampal lipid peroxidation, restore the acetylcholinesterase activity altered by Aβ neurotoxicity, and seems to reverse, at least partially, hippocampal tissue disorganization.
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Affiliation(s)
- Leticia R Dare
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Brazil
| | - Alexandre Garcia
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Brazil
| | - Caroline B Soares
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Brazil
| | - Luiza Lopes
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Brazil
| | - Ben-Hur S Neves
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Brazil
| | - Daniel V Dias
- Department of Structural Biology, Federal University of Triangulo Mineiro, Uberaba, Brazil
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Sakimoto Y, Mizuno J, Kida H, Kamiya Y, Ono Y, Mitsushima D. Learning Promotes Subfield-Specific Synaptic Diversity in Hippocampal CA1 Neurons. Cereb Cortex 2020; 29:2183-2195. [PMID: 30796817 PMCID: PMC6459007 DOI: 10.1093/cercor/bhz022] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 12/18/2022] Open
Abstract
The hippocampus is functionally heterogeneous between the dorsal and ventral subfields with left–right asymmetry. To determine the possible location of contextual memory, we performed an inhibitory avoidance task to analyze synaptic plasticity using slice patch-clamp technique. The training bilaterally increased the AMPA/NMDA ratio at dorsal CA3–CA1 synapses, whereas the training did not affect the ratio at ventral CA3–CA1 synapses regardless of the hemisphere. Moreover, sequential recording of miniature excitatory postsynaptic currents and miniature inhibitory postsynaptic currents from the same CA1 neuron clearly showed learning-induced synaptic plasticity. In dorsal CA1 neurons, the training dramatically strengthened both excitatory and inhibitory postsynaptic responses in both hemispheres, whereas the training did not promote the plasticity in either hemisphere in ventral CA1 neurons. Nonstationary fluctuation analysis further revealed that the training bilaterally increased the number of AMPA or GABAA receptor channels at dorsal CA1 synapses, but not at ventral CA1 synapses, suggesting functional heterogeneity of learning-induced receptor mobility. Finally, the performance clearly impaired by the bilateral microinjection of plasticity blockers in dorsal, but not ventral CA1 subfields, suggesting a crucial role for contextual learning. The quantification of synaptic diversity in specified CA1 subfields may help us to diagnose and evaluate cognitive disorders at the information level.
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Affiliation(s)
- Y Sakimoto
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | | | - H Kida
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Y Kamiya
- Uonuma Institute of Community Medicine, Niigata University Medical Hospital, Niigata, Japan
| | - Y Ono
- Department of Electronics and Bioinformatics, Meiji University School of Science and Technology, Tokyo, Japan
| | - D Mitsushima
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan.,Department of Physiology and Neuroscience, Kanagawa Dental University, Kanagawa, Japan.,The Research Institute for Time Studies, Yamaguchi University, Yamaguchi, Japan
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29
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Wilhelm EA, Torres MLCP, Pereira CF, Vogt AG, Cervo R, Dos Santos BGT, Cargnelutti R, Luchese C. Therapeutic potential of selanyl amide derivatives in the in vitro anticholinesterase activity and in in vivo antiamnesic action. Can J Physiol Pharmacol 2020; 98:304-313. [PMID: 31821013 DOI: 10.1139/cjpp-2019-0291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The present study evaluated the in vitro acetylcholinesterase (AChE) inhibitor activity of two new selanyl amide derivatives in cerebral structures of mice. Our results demonstrated that N-(2-(3-(phenylselanyl)propoxy)phenyl)furan-2-carboxamide (1) and N-(2-(3-(phenylselanyl)propoxy)phenyl)thiophene-2-carboxamide (2) inhibited the in vitro AChE activity in mice. Another objective was to assess the effect of the best AChE inhibitor in an amnesic model induced by scopolamine (SCO) in male Swiss mice. The involvement of AChE activity and lipid peroxidation in the cerebral structures was investigated. Our results showed that compound 1 (10 mg/kg, intragastrically) attenuated the latency to find the escape box and the number of holes visited in the Barnes maze task, without altering the locomotor and exploratory activities in an open-field test. Compound 1 protected against increasing in lipid peroxidation levels and AChE activity caused by SCO in the cerebral cortex and hippocampus of mice. In conclusion, the present study evidenced the in vitro anticholinesterase effect of two new selanyl amide derivatives in the cerebral structures of mice. Moreover, compound 1, a selanyl amide derivative containing a furan ring, demonstrated antiamnesic action due to its antioxidant and anticholinesterase activities in cerebral structures.
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Affiliation(s)
- Ethel A Wilhelm
- Programa de Pós-graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de Pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), CEP 96010-900 Pelotas, RS, Brazil
| | - Marina Laura C P Torres
- Programa de Pós-graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de Pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), CEP 96010-900 Pelotas, RS, Brazil
| | - Caroline F Pereira
- Programa de Pós-graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de Pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), CEP 96010-900 Pelotas, RS, Brazil
| | - Ane G Vogt
- Programa de Pós-graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de Pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), CEP 96010-900 Pelotas, RS, Brazil
| | - Rodrigo Cervo
- Department of Chemistry, Universidade Federal de Santa Maria, LMI - Laboratório de Materiais Inorgânicos, 97105-900, Santa Maria, RS, Brazil
| | - Brenda G T Dos Santos
- Department of Chemistry, Universidade Federal de Santa Maria, LMI - Laboratório de Materiais Inorgânicos, 97105-900, Santa Maria, RS, Brazil
| | - Roberta Cargnelutti
- Department of Chemistry, Universidade Federal de Santa Maria, LMI - Laboratório de Materiais Inorgânicos, 97105-900, Santa Maria, RS, Brazil
| | - Cristiane Luchese
- Programa de Pós-graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de Pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas (UFPel), CEP 96010-900 Pelotas, RS, Brazil
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30
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Paw-Min-Thein-Oo, Sakimoto Y, Kida H, Mitsushima D. Proximodistal Heterogeneity in Learning-promoted Pathway-specific Plasticity at Dorsal CA1 Synapses. Neuroscience 2020; 437:184-195. [PMID: 32360699 DOI: 10.1016/j.neuroscience.2020.04.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 01/28/2023]
Abstract
Contextual learning requires the delivery of AMPA receptors to CA1 synapses in the dorsal hippocampus. However, proximodistal heterogeneity of pathway-specific plasticity remains unclear. Here, we examined the proximodistal heterogeneity in learning-induced plasticity at the CA1 synapses with inputs from the entorhinal cortex layer III (ECIII) or from CA3. We subjected male rats to an inhibitory avoidance task and prepared acute hippocampal slices for whole-cell patch clamp experiments, where we stimulated ECIII-CA1 or CA3-CA1 input fibers to analyze evoked excitatory postsynaptic currents (EPSCs). Compared to untrained controls, trained rats exhibited higher AMPA/NMDA current ratios at CA3-CA1 synapses of proximal and intermediate, but not distal CA1 neurons, which suggested that region-specific plasticity occurred after learning. Moreover, trained rats exhibited higher AMPA/NMDA current ratios at ECIII-CA1 synapses of intermediate and distal, but not proximal CA1 neurons. These findings suggested the presence of proximodistal heterogeneity in pathway-specific postsynaptic plasticity. Regarding presynaptic plasticity, training slightly, but significantly increased the paired-pulse ratios of CA3-CA1 synapses of proximal and intermediate, but not distal CA1 neurons. Moreover, trained rats exhibited higher paired-pulse ratios at ECIII-CA1 synapses of intermediate and distal, but not proximal CA1 neurons, which suggested region-specific presynaptic plasticity. Finally, learning was clearly prevented by the bilateral microinjection of a plasticity blocker in the proximal or intermediate, but not distal CA1 subfields, which suggested functional heterogeneity along the proximodistal axis. Understanding region- and pathway-specific plasticity at dorsal CA1 synapses could aid in controlling encoded memory.
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Affiliation(s)
- Paw-Min-Thein-Oo
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan
| | - Yuya Sakimoto
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan
| | - Hiroyuki Kida
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan
| | - Dai Mitsushima
- Department of Physiology, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; The Research Institute for Time Studies, Yamaguchi University, Yamaguchi 753-8511, Japan.
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31
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Menezes J, Souto das Neves BH, Gonçalves R, Benetti F, Mello-Carpes PB. Maternal deprivation impairs memory and cognitive flexibility, effect that is avoided by environmental enrichment. Behav Brain Res 2020; 381:112468. [DOI: 10.1016/j.bbr.2020.112468] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 01/03/2020] [Accepted: 01/03/2020] [Indexed: 11/24/2022]
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32
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Villar ME, Marchal P, Viola H, Giurfa M. Redefining Single-Trial Memories in the Honeybee. Cell Rep 2020; 30:2603-2613.e3. [DOI: 10.1016/j.celrep.2020.01.086] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 11/16/2019] [Accepted: 01/24/2020] [Indexed: 01/08/2023] Open
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Hippocampal HECT E3 ligase inhibition facilitates consolidation, retrieval, and reconsolidation, and inhibits extinction of contextual fear memory. Neurobiol Learn Mem 2019; 167:107135. [PMID: 31821882 DOI: 10.1016/j.nlm.2019.107135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 11/25/2019] [Accepted: 12/03/2019] [Indexed: 11/23/2022]
Abstract
Ubiquitination is involved in synaptic plasticity and memory, but the involvement of HECT E3 ligases in these processes has not yet been established. Here, we bilaterally infused heclin, a specific inhibitor of some of these ligases, into the dorsal hippocampus of male Wistar rats that were trained in a contextual fear conditioning. Heclin improved short-term memory, consolidation, retrieval, and reconsolidation when administered immediately post training, prior to testing, or after memory reactivation, respectively. In addition, it impaired memory extinction when administered prior to a long reactivation session. Heclin infusion was also tested for locomotor activity and anxiety-like behavior in a circular arena, but no effect was seen. Taken together, these results indicate that HECT E3 ligases are involved in the modulation of fear memory.
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34
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Bellozi PM, Pelição R, Santos MC, Lima IV, Saliba SW, Vieira ÉL, Campos AC, Teixeira AL, de Oliveira AC, Nakamura-Palacios EM, Rodrigues LC. URB597 ameliorates the deleterious effects induced by binge alcohol consumption in adolescent rats. Neurosci Lett 2019; 711:134408. [DOI: 10.1016/j.neulet.2019.134408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 07/16/2019] [Accepted: 07/29/2019] [Indexed: 12/22/2022]
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Nardiello P, Pantano D, Lapucci A, Stefani M, Casamenti F. Diet Supplementation with Hydroxytyrosol Ameliorates Brain Pathology and Restores Cognitive Functions in a Mouse Model of Amyloid-β Deposition. J Alzheimers Dis 2019; 63:1161-1172. [PMID: 29710709 DOI: 10.3233/jad-171124] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease is the most common form of dementia affecting a large proportion of aged people. Plant polyphenols have been reported to be potentially useful in the prevention of AD due to their multiple pharmacological activities. The aim of the present study was to assess whether the previously reported neuroprotective and anti-inflammatory effects resulting from oleuropein aglycone administration were reproduced by diet supplementation with similar amounts of its metabolite hydoxytyrosol (HT). Four-month-old TgCRND8 and wild type mice were treated for 8 weeks with a low-fat diet (5%) supplemented with HT (50 mg/kg of diet). We found that HT supplementation significantly improved cognitive functions of TgCRND8 mice and significantly reduced Aβ42 and pE3-Aβ plaque area and number in the cortex; in the hippocampal areas of HT-fed TgCRND8 mice, we found a significant reduction in the pE3-Aβ plaque number together with a tendency toward a reduction in Aβ42 load and pE3-Aβ plaque area, associated with a marked reduction of TNF-α expression and astrocyte reaction. Macroautophagy induction and modulation of MAPKs signaling were found to underlie the beneficial effects of HT. Our findings indicate that HT administration reproduces substantially the beneficial effects on behavioral performance and neuropathology previously reported in TgCRND8 mice fed with oleuropein aglycone, resulting in comparable neuroprotection.
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Affiliation(s)
- Pamela Nardiello
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Daniela Pantano
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Andrea Lapucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Massimo Stefani
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Fiorella Casamenti
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
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36
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Gumilar F, Bras C, Aggio P, Domínguez S, Bartos M, Gallegos C, Mónaco N, Minetti A. Prenatal Exposure to Cadmium During Organogenesis Impairs Memory in Young Rats. Int J Toxicol 2019; 38:312-318. [PMID: 31113272 DOI: 10.1177/1091581819850579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Pregnant rats were treated with 0.3 and 0.6 mg cadmium (CdCl2)/kg injected subcutaneously on a daily basis from gestational day 7 to day 15 (organogenesis period). One control group was not injected and other received saline. The 45-day-old offspring were tested in a step-down inhibitory avoidance to evaluate short-term and long-term memory and in a radial maze for the study of spatial memory. These studies showed that gestational exposure to 0.6 mg Cd/kg produced in the male offspring a significant impairment in the retention of long-term memory evaluated 24 hours after training in the step-down inhibitory avoidance. The radial maze also demonstrated that the male offspring prenatally exposed to 0.6 mg Cd presented a significant deficit in the retention of spatial memory evaluated 42 days after training. These results demonstrate that the exposure to Cd during organogenesis may affect the retention of some types of memory.
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Affiliation(s)
- Fernanda Gumilar
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Cristina Bras
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Patricia Aggio
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Sergio Domínguez
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Mariana Bartos
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Cristina Gallegos
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Nina Mónaco
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
| | - Alejandra Minetti
- 1 Laboratorio de Toxicología, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina
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37
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Lisboa SF, Vila-Verde C, Rosa J, Uliana DL, Stern CAJ, Bertoglio LJ, Resstel LB, Guimaraes FS. Tempering aversive/traumatic memories with cannabinoids: a review of evidence from animal and human studies. Psychopharmacology (Berl) 2019; 236:201-226. [PMID: 30604182 DOI: 10.1007/s00213-018-5127-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 11/14/2018] [Indexed: 01/08/2023]
Abstract
RATIONALE Aversive learning and memory are essential to cope with dangerous and stressful stimuli present in an ever-changing environment. When this process is dysfunctional, however, it is associated with posttraumatic stress disorder (PTSD). The endocannabinoid (eCB) system has been implicated in synaptic plasticity associated with physiological and pathological aversive learning and memory. OBJECTIVE AND METHODS The objective of this study was to review and discuss evidence on how and where in the brain genetic or pharmacological interventions targeting the eCB system would attenuate aversive/traumatic memories through extinction facilitation in laboratory animals and humans. The effect size of the experimental intervention under investigation was also calculated. RESULTS Currently available data indicate that direct or indirect activation of cannabinoid type-1 (CB1) receptor facilitates the extinction of aversive/traumatic memories. Activating CB1 receptors around the formation of aversive/traumatic memories or their reminders can potentiate their subsequent extinction. In most cases, the effect size has been large (Cohen's d ≥ 1.0). The brain areas responsible for the abovementioned effects include the medial prefrontal cortex, amygdala, and/or hippocampus. The potential role of cannabinoid type-2 (CB2) receptors in extinction learning is now under investigation. CONCLUSION Drugs augmenting the brain eCB activity can temper the impact of aversive/traumatic experiences by diverse mechanisms depending on the moment of their administration. Considering the pivotal role the extinction process plays in PTSD, the therapeutic potential of these drugs is evident. The sparse number of clinical trials testing these compounds in stress-related disorders is a gap in the literature that needs to be addressed.
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Affiliation(s)
- Sabrina F Lisboa
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil. .,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil.
| | - C Vila-Verde
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil.,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - J Rosa
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil.,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - D L Uliana
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil.,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - C A J Stern
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil
| | - L J Bertoglio
- Department of Pharmacology, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - L B Resstel
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil.,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - F S Guimaraes
- Department of Pharmacology, Medical School of Ribeirão Preto, University of São Paulo (FMRP/USP), Av Bandeirantes 3900, Monte Alegre, 14049900, Ribeirão Preto, São Paulo, Brazil.,Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), Medical School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
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Beigi B, Shahidi S, Komaki A, Sarihi A, Hashemi-Firouzi N. Pretraining hippocampal stimulation of melatonin type 2 receptors can improve memory acquisition in rats. Int J Neurosci 2018; 129:492-500. [PMID: 30431374 DOI: 10.1080/00207454.2018.1545770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Learning and memory are among the most important cognitive functions of the brain. Melatonin receptor type 2 (MT2R) is located in the hippocampus and participates in learning and memory processes. In the present study, we examined the role of hippocampal MT2R activation in the acquisition, consolidation, and retrieval of learning and memory in novel object recognition (NOR) and passive avoidance (PA) tasks. METHODS IIK7 (0.03, 0.3, and 3 μg/μl/side), as a selective MT2R agonist, or vehicle was injected bilaterally into the dentate gyrus (DG) region of the hippocampus in rats five minutes before training, immediately after training, and five minutes before the retrieval-behavioral tasks, respectively. The discrimination index (DI) was measured in the NOR task, while step-through latency in acquisition (STLa), number of trials to acquisition (NOT), step-through latency in the retention trial (STLr), and time spent in the dark compartment (TDC) were determined in the PA task. RESULTS The pretraining intrahippocampal injection of IIK7 at all doses significantly improved acquisition in the PA task. On the other hand, the posttraining intrahippocampal administration of IIK7 had no significant effects on consolidation. The preretrieval intrahippocampal injection of IIK7 at different doses attenuated the retrieval of memory. However, the NOR data showed that the intrahippocampal injection of IIK7 at different doses had no significant effects on the acquisition, consolidation, or retrieval in this task. DISCUSSION Based on the findings, stimulation of MT2R could improve acquisition, whereas it had no effects on consolidation. It could impair retrieval in the PA task, while it had no effects on object recognition in rats.
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Affiliation(s)
- Bita Beigi
- a Neurophysiology Research Center , Hamadan University of Medical Science , Hamadan , Iran
| | - Siamak Shahidi
- a Neurophysiology Research Center , Hamadan University of Medical Science , Hamadan , Iran
| | - Alireza Komaki
- a Neurophysiology Research Center , Hamadan University of Medical Science , Hamadan , Iran
| | - Abdolrahman Sarihi
- a Neurophysiology Research Center , Hamadan University of Medical Science , Hamadan , Iran
| | - Nasrin Hashemi-Firouzi
- a Neurophysiology Research Center , Hamadan University of Medical Science , Hamadan , Iran
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Martinez-Oliveira P, de Oliveira MF, Alves N, Coelho RP, Pilar BC, Güllich AA, Ströher DJ, Boligon A, da Costa Escobar Piccoli J, Mello-Carpes PB, Manfredini V. Yacon leaf extract supplementation demonstrates neuroprotective effect against memory deficit related to β-amyloid-induced neurotoxicity. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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Canever L, Freire TG, Mastella GA, Damázio L, Gomes S, Fachim I, Michels C, Carvalho G, Godói AK, Peterle BR, Gava FF, Valvassori SS, Budni J, Quevedo J, Zugno AI. Changes in behavioural parameters, oxidative stress and neurotrophins in the brain of adult offspring induced to an animal model of schizophrenia: The effects of FA deficient or FA supplemented diet during the neurodevelopmental phase. Prog Neuropsychopharmacol Biol Psychiatry 2018; 86:52-64. [PMID: 29782958 DOI: 10.1016/j.pnpbp.2018.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 01/28/2023]
Abstract
A deficiency of maternal folic acid (FA) can compromise the function and development of the brain, and may produce a susceptibility to diseases such as schizophrenia (SZ) in the later life of offspring. The aim of this study was to evaluate the effects of both FA deficient and FA supplemented diets during gestation and lactation on behavioural parameters, the markers of oxidative stress and neurotrophic factors in adult offspring which had been subjected to an animal model of SZ. Female mother rats (Dam's) were separated into experimental maternal groups, which began receiving a special diet (food) consisting of the AIN-93 diet, a control diet, or an FA deficient diet during the periods of pregnancy and lactation. Dam's receiving the control diet were further subdivided into four groups: one group received only control diet, while three groups to receive supplementation with FA at different doses (5, 10 and 50 mg/kg). Adult offspring bred from the Dam's were divided into ten groups for induction of the animal model of SZ through the administration of ketamine (Ket) (25 mg/kg). After the last administration of the drug, the animals were subjected to the behavioural tests and were then euthanized. The frontal cortex (FC) and hippocampus (Hip) were then dissected for later biochemical analysis. Our data demonstrates that Ket induced the model of SZ by altering the behavioural parameters (e.g. hyperlocomotion, social impairment, deficits in the sensory-motor profile and memory damage in the adult animals); and also caused changes in the parameters of oxidative stress (lipid hydroperoxide - LPO; 8-isoprostane - 8-ISO; 4-hydroxynonenal - 4-HNE; protein carbonyl content; superoxide dismutase - SOD and catalase - CAT) as well as in the levels of neurotrophic factors (brain-derived neurotrophic factor - BDNF and nerve growth factor - NGF) particularly within the FC of adult offspring. A deficiency in maternal FA, alone or in combination with ket, was able to induce hyperlocomotion and social impairment in the offspring with increased levels of lipid and protein damage (LPO, 8-ISO, 4-HNE, carbonylation of protein) within the FC, increased activity of antioxidant enzymes (SOD and CAT) in both of the brain structures studied, and also reduced the levels of neurotrophins (BDNF and NGF), particularly within the Hip of the adult offspring. Supplementation of FA (5, 10 and 50 mg/kg) to the Dam's was mostly able to prevent the cognitive damage which was induced by Ket in the adult animals. FA (10 and 50 mg/kg) attenuated the action of Ket in the animals in relation to the biochemical parameters, proving the possible neuroprotective effect of FA in the adulthood of offspring that were subjected to the animal model of SZ. Our study indicates that the intake of maternal FA during pregnancy and lactation plays an important role, particularly in the regulation of markers of oxidative stress and neurotrophins.
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Affiliation(s)
- L Canever
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - T G Freire
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - G A Mastella
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - L Damázio
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - S Gomes
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - I Fachim
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - C Michels
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - G Carvalho
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - A K Godói
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - B R Peterle
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - F F Gava
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - S S Valvassori
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - J Budni
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil
| | - J Quevedo
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil; Center for Experimental Models in Psychiatry, Department of Psychiatry and Behavioral Sciences, Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA
| | - A I Zugno
- Laboratório de Neurociências and Instituto Nacional de Ciência e Tecnologia Translacional em Medicina (INCT-TM), Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil.
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Sosa PM, Gonçalves R, Carpes FP, Mello-Carpes PB. Active memory reactivation previous to the introduction of a new related content improves students' learning. ADVANCES IN PHYSIOLOGY EDUCATION 2018; 42:75-78. [PMID: 29341807 DOI: 10.1152/advan.00077.2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Priscila Marques Sosa
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Rio Grande do Sul, Brazil
| | - Rithiele Gonçalves
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Rio Grande do Sul, Brazil
| | - Felipe P Carpes
- Applied Neuromechanics Research Group, Federal University of Pampa, Uruguaiana, Rio Grande do Sul, Brazil
| | - Pâmela B Mello-Carpes
- Physiology Research Group, Federal University of Pampa, Uruguaiana, Rio Grande do Sul, Brazil
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Miranda M, Bekinschtein P. Plasticity Mechanisms of Memory Consolidation and Reconsolidation in the Perirhinal Cortex. Neuroscience 2018; 370:46-61. [DOI: 10.1016/j.neuroscience.2017.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/26/2017] [Accepted: 06/01/2017] [Indexed: 12/17/2022]
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da Silva FD, Pinz MP, de Oliveira RL, Rodrigues KC, Ianiski FR, Bassaco MM, Silveira CC, Jesse CR, Roman SS, Wilhelm EA, Luchese C. Organosulfur compound protects against memory decline induced by scopolamine through modulation of oxidative stress and Na +/K + ATPase activity in mice. Metab Brain Dis 2017; 32:1819-1828. [PMID: 28710722 DOI: 10.1007/s11011-017-0067-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 07/06/2017] [Indexed: 01/01/2023]
Abstract
The present study investigated the possible effect of BMMS in protecting against memory impairment in an Alzheimer's disease model induced by scopolamine in mice. Another objective was to evaluate the involvement of oxidative stress and Na+/K+ ATPase activity in cerebral cortex and hippocampus of mice. Male Swiss mice were divided into four groups: groups I and III received canola oil (10 ml/kg, intragastrically (i.g.)), while groups II and IV received BMMS (10 mg/kg, i.g.). Thirty minutes after treatments, groups III and IV received scopolamine (1 mg/kg, intraperitoneal (i.p.)), while groups I and II received saline (5 ml/kg, i.p.). Behavioral tests were performed thirty minutes after scopolamine or saline injection. Cerebral cortex and hippocampus were removed to determine the thiobarbituric acid reactive species (TBARS) levels, non-protein thiols (NPSH) content, catalase (CAT) and Na+/K+ ATPase activities. The results showed that BMMS pretreatment protected against the reduction in alternation and latency time induced by scopolamine in the Y-maze test and step-down inhibitory avoidance, respectively. In the Barnes maze, the latency to find the escape box and the number of holes visited were attenuated by BMMS. Locomotor and exploratory activities were similar in all groups. BMMS pretreatment protected against the increase in the TBARS levels, NPSH content and CAT activity, as well as the inhibition on the Na+/K+ ATPase activity caused by scopolamine in the cerebral cortex. In the hippocampus, no significant difference was observed. In conclusion, the present study revealed that BMMS protected against the impairment of retrieval of short-term and long-term memories caused by scopolamine in mice. Moreover, antioxidant effect and protection on the Na+/K+ ATPase activity are involved in the effect of compound against memory impairment in AD model induced by scopolamine.
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Affiliation(s)
- Fernanda D da Silva
- Programa de Pós-Graduação em Nanociências, Centro de Ciências Tecnológicas, Centro Universitário Franciscano, Santa Maria, RS, CEP 97010-032, Brazil
| | - Mikaela P Pinz
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Renata L de Oliveira
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Karline C Rodrigues
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Francine R Ianiski
- Programa de Pós-Graduação em Nanociências, Centro de Ciências Tecnológicas, Centro Universitário Franciscano, Santa Maria, RS, CEP 97010-032, Brazil
| | - Mariana M Bassaco
- Programa de Pós-Graduação em Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, CEP 97105-900, Brazil
| | - Claudio C Silveira
- Programa de Pós-Graduação em Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, CEP 97105-900, Brazil
| | - Cristiano R Jesse
- Laboratório de Avaliações Farmacológicas e Toxicológicas Aplicadas às Moléculas Bioativas, LaftamBio Pampa, Universidade Federal do Pampa, Itaqui, RS, CEP 97650-000, Brazil
| | - Silvane S Roman
- Universidade Regional Integrada, Campus Erechim, RS, CEP 99700-000, Brazil
| | - Ethel A Wilhelm
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil.
| | - Cristiane Luchese
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica (LaFarBio), Grupo de pesquisa em Neurobiotecnologia (GPN), Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil.
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Prevention of Memory Impairment and Neurotrophic Factors Increased by Lithium in Wistar Rats Submitted to Pneumococcal Meningitis Model. Mediators Inflamm 2017; 2017:6490652. [PMID: 29200666 PMCID: PMC5671739 DOI: 10.1155/2017/6490652] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 09/10/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to investigate the effects of lithium on brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and glial cell line-derived neurotrophic factor (GDNF) expression in the hippocampus and on memory in experimental pneumococcal meningitis. The mood-stabilizer lithium is known as a neuroprotective agent with many effects on the brain. In this study, animals received either artificial cerebrospinal fluid or Streptococcus pneumoniae suspension at a concentration of 5 × 109 CFU/mL. Eighteen hours after induction, all animals received ceftriaxone. The animals received saline or lithium (47.5 mg/kg) or tamoxifen (1 mg/kg) as adjuvant treatment, and they were separated into six groups: control/saline, control/lithium, control/tamoxifen, meningitis/saline, meningitis/lithium, and meningitis/tamoxifen. Ten days after meningitis induction, animals were subjected to open-field habituation and the step-down inhibitory avoidance tasks. Immediately after these tasks, the animals were killed and their hippocampus was removed to evaluate the expression of BDNF, NGF, and GDNF. In the meningitis group, treatment with lithium and tamoxifen resulted in improvement in memory. Meningitis group showed decreased expression of BDNF and GDNF in the hippocampus while lithium reestablished the neurotrophin expression. Lithium was able to prevent memory impairment and reestablishes hippocampal neurotrophin expression in experimental pneumococcal meningitis.
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Jardim NS, Sartori G, Sari MH, Müller SG, Nogueira CW. Bisphenol A impairs the memory function and glutamatergic homeostasis in a sex-dependent manner in mice: Beneficial effects of diphenyl diselenide. Toxicol Appl Pharmacol 2017; 329:75-84. [DOI: 10.1016/j.taap.2017.05.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/26/2017] [Accepted: 05/28/2017] [Indexed: 12/12/2022]
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Modulation of the consolidation and reconsolidation of fear memory by three different serotonin receptors in hippocampus. Neurobiol Learn Mem 2017; 142:48-54. [DOI: 10.1016/j.nlm.2016.12.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/22/2016] [Accepted: 12/24/2016] [Indexed: 12/19/2022]
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Short-term green tea supplementation prevents recognition memory deficits and ameliorates hippocampal oxidative stress induced by different stroke models in rats. Brain Res Bull 2017; 131:78-84. [DOI: 10.1016/j.brainresbull.2017.03.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 03/16/2017] [Accepted: 03/17/2017] [Indexed: 12/31/2022]
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Increased risk of developing schizophrenia in animals exposed to cigarette smoke during the gestational period. Prog Neuropsychopharmacol Biol Psychiatry 2017; 75:199-206. [PMID: 28229913 DOI: 10.1016/j.pnpbp.2017.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/12/2016] [Accepted: 02/12/2017] [Indexed: 11/22/2022]
Abstract
Cigarette smoking during the prenatal period has been investigated as a causative factor of obstetric abnormalities, which lead to cognitive and behavioural changes associated with schizophrenia. The aim of this study was to investigate behaviour and AChE activity in brain structures in adult rats exposed to cigarette smoke during the prenatal period. Pregnant rats were divided into non-PCSE (non-prenatal cigarette smoke exposure) and PCSE (prenatal cigarette smoke exposure) groups. On post-natal day 60, the rats received saline or ketamine for 7days and were subjected to behavioural tasks. In the locomotor activity task, the non-PCSE+ketamine and PCSE+ketamine groups exhibited increased locomotor activity compared with the saline group. In the social interaction task, the non-PCSE+ketamine and PCSE+ketamine groups exhibited an increased latency compared with the control groups. However, the PCSE+ketamine group exhibited a decreased latency compared with the non-PCSE+ketamine group, which indicates that the cigarette exposure appeared to decrease, the social deficits generated by ketamine. In the inhibitory avoidance task, the non-PCSE+ketamine, PCSE, and PCSE+ketamine groups exhibited impairments in working memory, short-term memory, and long-term memory. In the pre-pulse inhibition (PPI) test, cigarette smoke associated with ketamine resulted in impaired PPI in 3 pre-pulse (PP) intensity groups compared with the control groups. In the biochemical analysis, the AChE activity in brain structures increased in the ketamine groups; however, the PCSE+ketamine group exhibited an exacerbated effect in all brain structures. The present study indicates that exposure to cigarette smoke during the prenatal period may affect behaviour and cerebral cholinergic structures during adulthood.
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Canto de Souza L, Provensi G, Vullo D, Carta F, Scozzafava A, Costa A, Schmidt SD, Passani MB, Supuran CT, Blandina P. Carbonic anhydrase activation enhances object recognition memory in mice through phosphorylation of the extracellular signal-regulated kinase in the cortex and the hippocampus. Neuropharmacology 2017; 118:148-156. [PMID: 28286213 DOI: 10.1016/j.neuropharm.2017.03.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/24/2017] [Accepted: 03/07/2017] [Indexed: 01/02/2023]
Abstract
Rats injected with by d-phenylalanine, a carbonic anhydrase (CA) activator, enhanced spatial learning, whereas rats given acetazolamide, a CA inhibitor, exhibited impairments of fear memory consolidation. However, the related mechanisms are unclear. We investigated if CAs are involved in a non-spatial recognition memory task assessed using the object recognition test (ORT). Systemic administration of acetazolamide to male CD1 mice caused amnesia in the ORT and reduced CA activity in brain homogenates, while treatment with d-phenylalanine enhanced memory and increased CA activity. We provided also the first evidence that d-phenylalanine administration rapidly activated extracellular signal-regulated kinase (ERK) pathways, a critical step for memory formation, in the cortex and the hippocampus, two brain areas involved in memory processing. Effects elicited by d-phenylalanine were completely blunted by co-administration of acetazolamide, but not of 1-N-(4-sulfamoylphenyl-ethyl)-2,4,6-trimethylpyridinium perchlorate (C18), a CA inhibitor that, differently from acetazolamide, does not cross the blood brain barrier. Our results strongly suggest that brain but not peripheral CAs activation potentiates memory as a result of ERK pathway enhanced activation.
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Affiliation(s)
- Lucas Canto de Souza
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | - Gustavo Provensi
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | - Daniela Vullo
- Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Sesto Fiorentino, Italy
| | - Fabrizio Carta
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | - Andrea Scozzafava
- Dipartimento di Chimica 'Ugo Schiff', Università degli Studi di Firenze, Sesto Fiorentino, Italy
| | - Alessia Costa
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | - Scheila Daiane Schmidt
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | | | - Claudiu T Supuran
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy
| | - Patrizio Blandina
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Università degli Studi di Firenze, Firenze, Italy.
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Peng C, Hong X, Chen W, Zhang H, Tan L, Wang X, Ding Y, He J. Melatonin ameliorates amygdala-dependent emotional memory deficits in Tg2576 mice by up-regulating the CREB/c-Fos pathway. Neurosci Lett 2017; 638:76-82. [DOI: 10.1016/j.neulet.2016.11.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/04/2016] [Accepted: 11/29/2016] [Indexed: 12/13/2022]
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