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de Souza JM, Ferreira-Vieira TH, Maciel EMA, Silva NC, Lima IBQ, Doria JG, Olmo IG, Ribeiro FM. mGluR5 ablation leads to age-related synaptic plasticity impairments and does not improve Huntington’s disease phenotype. Sci Rep 2022; 12:8982. [PMID: 35643779 PMCID: PMC9148310 DOI: 10.1038/s41598-022-13029-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/18/2022] [Indexed: 11/29/2022] Open
Abstract
Glutamate receptors, including mGluR5, are involved in learning and memory impairments triggered by aging and neurological diseases. However, each condition involves distinct molecular mechanisms. It is still unclear whether the mGluR5 cell signaling pathways involved in normal brain aging differ from those altered due to neurodegenerative disorders. Here, we employed wild type (WT), mGluR5−/−, BACHD, which is a mouse model of Huntington’s Disease (HD), and mGluR5−/−/BACHD mice, at the ages of 2, 6 and 12 months, to distinguish the mGluR5-dependent cell signaling pathways involved in aging and neurodegenerative diseases. We demonstrated that the memory impairment exhibited by mGluR5−/− mice is accompanied by massive neuronal loss and decreased dendritic spine density in the hippocampus, similarly to BACHD and BACHD/mGluR5−/− mice. Moreover, mGluR5 ablation worsens some of the HD-related alterations. We also show that mGluR5−/− and BACHD/mGluR5−/− mice have decreased levels of PSD95, BDNF, and Arc/Arg3.1, whereas BACHD mice are mostly spared. PSD95 expression was affected exclusively by mGluR5 ablation in the aging context, making it a potential target to treat age-related alterations. Taken together, we reaffirm the relevance of mGluR5 for memory and distinguish the mGluR5 cell signaling pathways involved in normal brain aging from those implicated in HD.
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2
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Santos RPM, Ribeiro R, Ferreira-Vieira TH, Aires RD, de Souza JM, Oliveira BS, Lima ALD, de Oliveira ACP, Reis HJ, de Miranda AS, Vieira EML, Ribeiro FM, Vieira LB. Metabotropic glutamate receptor 5 knockout rescues obesity phenotype in a mouse model of Huntington's disease. Sci Rep 2022; 12:5621. [PMID: 35379852 PMCID: PMC8980063 DOI: 10.1038/s41598-022-08924-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 02/17/2022] [Indexed: 12/12/2022] Open
Abstract
Obesity represents a global health problem and is characterized by metabolic dysfunctions and a low-grade chronic inflammatory state, which can increase the risk of comorbidities, such as atherosclerosis, diabetes and insulin resistance. Here we tested the hypothesis that the genetic deletion of metabotropic glutamate receptor 5 (mGluR5) may rescue metabolic and inflammatory features present in BACHD mice, a mouse model of Huntington's disease (HD) with an obese phenotype. For that, we crossed BACHD and mGluR5 knockout mice (mGluR5-/-) in order to obtain the following groups: Wild type (WT), mGluR5-/-, BACHD and BACHD/mGluR5-/- (double mutant mice). Our results showed that the double mutant mice present decreased body weight as compared to BACHD mice in all tested ages and reduced visceral adiposity as compared to BACHD at 6 months of age. Additionally, 12-month-old double mutant mice present increased adipose tissue levels of adiponectin, decreased leptin levels, and increased IL-10/TNF ratio as compared to BACHD mice. Taken together, our preliminary data propose that the absence of mGluR5 reduce weight gain and visceral adiposity in BACHD mice, along with a decrease in the inflammatory state in the visceral adipose tissue (VAT), which may indicate that mGluR5 may play a role in adiposity modulation.
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Affiliation(s)
- Rebeca P M Santos
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Roberta Ribeiro
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Talita H Ferreira-Vieira
- Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil
- Faculdade Sete Lagoas, Sete Lagoas, Brazil
| | - Rosaria D Aires
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
- Faculdade Sete Lagoas, Sete Lagoas, Brazil
| | - Jessica M de Souza
- Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil
| | - Bruna S Oliveira
- Departamento de Morfologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Anna Luiza D Lima
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Antônio Carlos P de Oliveira
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Helton J Reis
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Aline S de Miranda
- Departamento de Morfologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erica M L Vieira
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil
| | - Fabiola M Ribeiro
- Departamento de Bioquímica e Imunologia, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, CEP 31270-901, Brazil.
| | - Luciene B Vieira
- Departamento de Farmacologia, ICB, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP 31270-901, Brazil.
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3
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Röpke J, Ferreira-Vieira TH, Iglesias LP, Asth L, Ribeiro FM, Moreira FA. Protective role of endocannabinoid signaling in an animal model of haloperidol-induced tardive dyskinesia. Pharmacol Biochem Behav 2021; 206:173193. [PMID: 33933537 DOI: 10.1016/j.pbb.2021.173193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/23/2021] [Accepted: 04/25/2021] [Indexed: 11/19/2022]
Abstract
Tardive dyskinesia (TD) is a side effect associated with the long-term use of certain antipsychotics. Considering the modulatory role of the endocannabinoid system upon dopaminergic neurotransmission, the present study tested the hypothesis that increasing endocannabinoid (anandamide and 2-arachidonoylglycerol) levels attenuates haloperidol-induced TD (vacuous chewing movements, VCMs) in male Wistar rats. The animals received administration of chronic haloperidol (38 mg/kg; 29 days) followed by acute FAAH (URB597, 0.1-0.5 mg/kg) or MAGL (JZL184, 1-10 mg/kg) inhibitors before VCM quantification. The underlying mechanisms were evaluated by pre-treatments with a CB1 receptor antagonist (AM251, 1 mg/kg) or a TRPV1 channel blocker (SB366791, 1 mg/kg). Moreover, CB1 receptor expression was evaluated in the striatum of high-VCM animals. As expected, haloperidol induced VCMs only in a subset of rats. Either FAAH or MAGL inhibition reduced VCMs. These effects were prevented by CB1 receptor antagonism, but not by TRPV1 blockage. Remarkably, CB1 receptor expression was increased high-VCM rats, with a positive correlation between the levels of CB1 expression and the number of VCMs. In conclusion, increasing endocannabinoid levels results in CB1 receptor-mediated protection against haloperidol-induced TD in rats. The increased CB1 receptor expression after chronic haloperidol treatment suggests a counter-regulatory protective mechanism.
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Affiliation(s)
- Jivago Röpke
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Talita H Ferreira-Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Lia P Iglesias
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Laila Asth
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Fabíola M Ribeiro
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Fabrício A Moreira
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
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4
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Doria JG, de Souza JM, Silva FR, Olmo IG, Carvalho TG, Alves-Silva J, Ferreira-Vieira TH, Santos JT, Xavier CQS, Silva NC, Maciel EMA, Conn PJ, Ribeiro FM. The mGluR5 positive allosteric modulator VU0409551 improves synaptic plasticity and memory of a mouse model of Huntington's disease. J Neurochem 2018; 147:222-239. [PMID: 30028018 DOI: 10.1111/jnc.14555] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/19/2018] [Accepted: 07/13/2018] [Indexed: 01/17/2023]
Abstract
Huntington's Disease (HD) is an autosomal-dominant neurodegenerative disorder, characterized by involuntary body movements, cognitive impairment, and psychiatric disorder. The metabotropic glutamate receptor 5 (mGluR5) plays an important role in HD and we have recently demonstrated that mGluR5-positive allosteric modulators (PAMs) can ameliorate pathology and the phenotypic signs of a mouse model of HD. In this study, we investigated the molecular mechanisms involved in mGluR5 PAMs effect on memory. Our results demonstrate that subchronic treatment with the mGluR5 PAM VU0409551 was effective in reversing the memory deficits exhibited by BACHD mice, a mouse model for HD. Moreover, VU0409551 treatment stabilized mGluR5 at the cellular plasma membrane of BACHD mice, increasing the expression of several genes important for synaptic plasticity, including c-Fos, brain-derived neurotrophic factor, Arc/Arg3.1, syntaxin 1A, and post-synaptic density-95. In addition, VU0409551 treatment also increased dendritic spine density and maturation and augmented the number of pre-synaptic sites. In conclusion, our results demonstrate that VU0409551 triggered the activation of cell signaling pathways important for synaptic plasticity, enhancing the level of dendritic spine maturation and rescuing BACHD memory impairment. OPEN PRACTICES: Open Science: This manuscript was awarded with the Open Materials Badge. For more information see: https://cos.io/our-services/open-science-badges/.
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Affiliation(s)
- Juliana G Doria
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jessica M de Souza
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flavia R Silva
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Isabella G Olmo
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Toniana G Carvalho
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Juliana Alves-Silva
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Talita H Ferreira-Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jessica T Santos
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Claudymara Q S Xavier
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Nathalia C Silva
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Esther M A Maciel
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Peter Jeffrey Conn
- Vanderbilt Center for Drug Discovery, Vanderbilt University, Nashville, TN, USA
| | - Fabiola M Ribeiro
- Department of Biochemistry and Immunology, Institute of Biological Sciences (ICB), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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5
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Ferreira-Vieira TH, Guimaraes IM, Silva FR, Ribeiro FM. Alzheimer's disease: Targeting the Cholinergic System. Curr Neuropharmacol 2016; 14:101-15. [PMID: 26813123 PMCID: PMC4787279 DOI: 10.2174/1570159x13666150716165726] [Citation(s) in RCA: 831] [Impact Index Per Article: 103.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 07/01/2015] [Accepted: 07/14/2015] [Indexed: 12/16/2022] Open
Abstract
Acetylcholine (ACh) has a crucial role in the peripheral and central nervous
systems. The enzyme choline acetyltransferase (ChAT) is responsible for
synthesizing ACh from acetyl-CoA and choline in the cytoplasm and the vesicular
acetylcholine transporter (VAChT) uptakes the neurotransmitter into synaptic
vesicles. Following depolarization, ACh undergoes exocytosis reaching the
synaptic cleft, where it can bind its receptors, including muscarinic and
nicotinic receptors. ACh present at the synaptic cleft is promptly hydrolyzed by
the enzyme acetylcholinesterase (AChE), forming acetate and choline, which is
recycled into the presynaptic nerve terminal by the high-affinity choline
transporter (CHT1). Cholinergic neurons located in the basal forebrain,
including the neurons that form the nucleus basalis of Meynert, are severely
lost in Alzheimer’s disease (AD). AD is the most ordinary cause of dementia
affecting 25 million people worldwide. The hallmarks of the disease are the
accumulation of neurofibrillary tangles and amyloid plaques. However, there is
no real correlation between levels of cortical plaques and AD-related cognitive
impairment. Nevertheless, synaptic loss is the principal correlate of disease
progression and loss of cholinergic neurons contributes to memory and attention
deficits. Thus, drugs that act on the cholinergic system represent a promising
option to treat AD patients.
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Affiliation(s)
| | | | | | - Fabiola M Ribeiro
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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6
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Batista EML, Doria JG, Ferreira-Vieira TH, Alves-Silva J, Ferguson SSG, Moreira FA, Ribeiro FM. Orchestrated activation of mGluR5 and CB1 promotes neuroprotection. Mol Brain 2016; 9:80. [PMID: 27543109 PMCID: PMC4992217 DOI: 10.1186/s13041-016-0259-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 08/06/2016] [Indexed: 01/05/2023] Open
Abstract
The metabotropic glutamate receptor 5 (mGluR5) and the cannabinoid receptor 1 (CB1) exhibit a functional interaction, as CB1 regulates pre-synaptic glutamate release and mGluR5 activation increases endocannabinoid synthesis at the post-synaptic site. Since both mGluR5 and CB1 promote neuroprotection, we delineated experiments to investigate a possible link between CB1 and mGluR5 activation in the induction of neuroprotection using primary cultured corticostriatal neurons. We find that either the pharmacological blockade or the genetic ablation of either mGluR5 or CB1 can abrogate both CB1- and mGluR5-mediated neuroprotection against glutamate insult. Interestingly, decreased glutamate release and diminished intracellular Ca2+ do not appear to play a role in CB1 and mGluR5-mediated neuroprotection. Rather, these two receptors work cooperatively to trigger the activation of cell signaling pathways to promote neuronal survival, which involves MEK/ERK1/2 and PI3K/AKT activation. Interestingly, although mGluR5 activation protects postsynaptic terminals and CB1 the presynaptic site, intact signaling of both receptors is required to effectively promote neuronal survival. In conclusion, mGluR5 and CB1 act in concert to activate neuroprotective cell signaling pathways and promote neuronal survival.
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Affiliation(s)
- Edleusa M L Batista
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil
| | - Juliana G Doria
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil
| | - Talita H Ferreira-Vieira
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil
| | - Juliana Alves-Silva
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil
| | - Stephen S G Ferguson
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, K1H8M5, Canada
| | - Fabricio A Moreira
- Departamento de Farmacologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Fabiola M Ribeiro
- Departamento de Bioquimica e Imunologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Ave. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil.
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7
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Olmo IG, Ferreira-Vieira TH, Ribeiro FM. Dissecting the Signaling Pathways Involved in the Crosstalk between Metabotropic Glutamate 5 and Cannabinoid Type 1 Receptors. Mol Pharmacol 2016; 90:609-619. [PMID: 27338080 DOI: 10.1124/mol.116.104372] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/16/2016] [Indexed: 02/06/2023] Open
Abstract
The metabotropic glutamate 5 receptor and the cannabinoid type 1 receptor are G protein-coupled receptors that are widely expressed in the central nervous system. Metabotropic glutamate 5 receptors, present at the postsynaptic site, are coupled to Gαq/11 proteins and display an excitatory response upon activation, whereas the cannabinoid type 1 receptor, mainly present at presynaptic terminals, is coupled to the Gi/o protein and triggers an inhibitory response. Recent studies suggest that the glutamatergic and endocannabinoid systems exhibit a functional interaction to modulate several neural processes. In this review, we discuss possible mechanisms involved in this crosstalk and its relationship with physiologic and pathologic conditions, including nociception, addiction, and fragile X syndrome.
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Affiliation(s)
- Isabella G Olmo
- Department of Biochemistry and Immunology, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Talita H Ferreira-Vieira
- Department of Biochemistry and Immunology, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fabiola M Ribeiro
- Department of Biochemistry and Immunology, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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8
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Bastos CP, Pereira LM, Ferreira-Vieira TH, Drumond LE, Massensini AR, Moraes MFD, Pereira GS. Object recognition memory deficit and depressive-like behavior caused by chronic ovariectomy can be transitorialy recovered by the acute activation of hippocampal estrogen receptors. Psychoneuroendocrinology 2015; 57:14-25. [PMID: 25867995 DOI: 10.1016/j.psyneuen.2015.03.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/18/2015] [Accepted: 03/21/2015] [Indexed: 01/29/2023]
Abstract
It is well known that estradiol (E2) replacement therapy is effective on restoring memory deficits and mood disorders that may occur during natural menopause or after surgical ovarian removal (ovariectomy, OVX). However, it is still unknown the effectiveness of acute and localized E2 administration on the effects of chronic OVX. Here we tested the hypothesis that the intra-hippocampal E2 infusion, as well as specific agonists of estrogen receptors (ERs) alpha (ERα) and beta (ERβ), are able to mend novel object recognition (NOR) memory deficit and depressive-like behavior caused by 12 weeks of OVX. We found that both ERα and ERβ activation, at earlier stages of consolidation, recovered the NOR memory deficit caused by 12 w of OVX. Conversely, only the ERβ activation was effective in decreasing the depressive-like behavior caused by 12 w of OVX. Furthermore, we investigated the effect of OVX on hippocampal volume and ERs expression. The structural MRI showed no alteration in the hippocampus volume of 12 w OVX animals. Interestingly, ERα expression in the hippocampus decreased after one week of OVX, but increased in 12 w OVX animals. Overall, we may conclude that the chronic estrogen deprivation, induced by 12 weeks of OVX, modulates the hippocampal ERα expression and induces NOR memory deficit and depressive-like behaviors. Nonetheless, it is noteworthy that the acute effects of E2 on NOR memory and depressive-like behavior are still apparent even after 12 weeks of OVX.
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Affiliation(s)
- Cristiane P Bastos
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil
| | - Luciana M Pereira
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil
| | - Talita H Ferreira-Vieira
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil
| | - Luciana E Drumond
- Centro de Tecnologia e Pesquisa em Magneto-Ressonância, CTPMAG, Universidade Federal de Minas Gerais, Brazil; Universidade Federal de São João Del Rey, Brazil
| | - André R Massensini
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil
| | - Márcio F D Moraes
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil; Centro de Tecnologia e Pesquisa em Magneto-Ressonância, CTPMAG, Universidade Federal de Minas Gerais, Brazil
| | - Grace S Pereira
- Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Brazil.
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9
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Ferreira-Vieira TH, Bastos CP, Pereira GS, Moreira FA, Massensini AR. A role for the endocannabinoid system in exercise-induced spatial memory enhancement in mice. Hippocampus 2013; 24:79-88. [PMID: 24115292 DOI: 10.1002/hipo.22206] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2013] [Indexed: 01/22/2023]
Abstract
It is well known that physical exercise has positive effects on cognitive functions and hippocampal plasticity. However, the underlying mechanisms have remained to be further investigated. Here we investigated the hypothesis that the memory-enhancement promoted by physical exercise relies on facilitation of the endocannabinoid system. We observed that the spatial memory tested in the object location paradigm did not persist in sedentary mice, but could be improved by 1 week of treadmill running. In addition, exercise up-regulated CB1 receptor and BDNF expression in the hippocampus. To verify if these changes required CB1 activation, we treated the mice with the selective antagonist, AM251, before each period of physical activity. In line with our hypothesis, this drug prevented the exercise-induced memory enhancement and BDNF expression. Furthermore, AM251 reduced CB1 expression. To test if facilitating the endocannabinoid system signaling would mimic the alterations observed after exercise, we treated sedentary animals during 1 week with the anandamide-hydrolysis inhibitor, URB597. Mice treated with this drug recognized the object in a new location and have increased levels of CB1 and BDNF expression in the hippocampus, showing that potentiating the endocanabinoid system equally benefits memory. In conclusion, the favorable effects of exercise upon spatial memory and BDNF expression depend on facilitation of CB1 receptor signaling, which can be mimic by inhibition of anandamide hydrolysis in sedentary animals. Our results suggest that, at least in part, the promnesic effect of the exercise is dependent of CB1 receptor activation and is mediated by BDNF.
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Affiliation(s)
- Talita H Ferreira-Vieira
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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10
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Leite HR, Mourão FAG, Drumond LE, Ferreira-Vieira TH, Bernardes D, Silva JF, Lemos VS, Moraes MFD, Pereira GS, Carvalho-Tavares J, Massensini AR. Swim training attenuates oxidative damage and promotes neuroprotection in cerebral cortical slices submitted to oxygen glucose deprivation. J Neurochem 2012; 123:317-24. [DOI: 10.1111/j.1471-4159.2012.07898.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 07/11/2012] [Accepted: 07/24/2012] [Indexed: 12/24/2022]
Affiliation(s)
- Hércules R. Leite
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Flávio A. G. Mourão
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Luciana E. Drumond
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Talita H. Ferreira-Vieira
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Danielle Bernardes
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Josiane F. Silva
- Laboratório de Fisiologia Cardiovascular, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Virgínia S. Lemos
- Laboratório de Fisiologia Cardiovascular, Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Márcio F. D. Moraes
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Grace S. Pereira
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - Juliana Carvalho-Tavares
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
| | - André R. Massensini
- Núcleo de Neurociências (NNC), Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais; Pampulha; Belo Horizonte; Minas Gerais; Brasil
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