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Duarte D, Schütze M, Elkhayat M, Neves MDC, Romano-Silva MA, Correa H. Examining differences in brain metabolism associated with childhood maltreatment and suicidal attempt in euthymic patients with bipolar disorder: A PET and Machine Learning Study. Braz J Psychiatry 2023; 45:127-131. [PMID: 37169366 PMCID: PMC10154016 DOI: 10.47626/1516-4446-2022-2811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/14/2022] [Indexed: 05/13/2023]
Abstract
OBJECTIVE Childhood maltreatment (CM) is a significant risk factor for the development and severity of bipolar disorder (BD) with increased risk of suicide attempts (SA). This study evaluated whether a machine learning algorithm could be trained to predict if a patient with BD has a history of CM or previous SA based on brain metabolism measured by positron emission tomography. METHODS Thirty-six euthymic patients diagnosed with BD type I, with and without a history of CM were assessed using the Childhood Trauma Questionnaire. Suicide attempts were assessed through the Mini International Neuropsychiatric Interview (MINI-Plus) and a semi-structured interview. Resting-state positron emission tomography with 18F-fluorodeoxyglucose was conducted, electing only grey matter voxels through the Statistical Parametric Mapping toolbox. Imaging analysis was performed using a supervised machine learning approach following Gaussian Process Classification. RESULTS Patients were divided into 18 participants with a history of CM and 18 participants without it, along with 18 individuals with previous SA and 18 individuals without such history. The predictions for CM and SA were not significant (accuracy = 41.67%; p = 0.879). CONCLUSION Further investigation is needed to improve the accuracy of machine learning, as its predictive qualities could potentially be highly useful in determining histories and possible outcomes of high-risk psychiatric patients.
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Affiliation(s)
- Dante Duarte
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada. Seniors Mental Health Program, St. Joseph's Healthcare Hamilton, ON, Canada
| | - Manuel Schütze
- Instituto Nacional de Ciência e Tecnologia de Medicina Molecular (INCT-MM), Universidade Federal de Minas Gerais (UFMG), MG, Brazil
| | - Mazen Elkhayat
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, ON, Canada
| | | | - Marco A Romano-Silva
- Instituto Nacional de Ciência e Tecnologia de Medicina Molecular (INCT-MM), Universidade Federal de Minas Gerais (UFMG), MG, Brazil. Programa de Pós-Graduação em Medicina Molecular, UFMG, MG, Brazil
| | - Humberto Correa
- Programa de Pós-Graduação em Medicina Molecular, UFMG, MG, Brazil. Departamento de Saúde Mental, UFMG, MG, Brazil
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2
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Fonseca EA, Lafeta L, Luiz Campos J, Cunha R, Barbosa A, Romano-Silva MA, Vieira R, Malard LM, Jorio A. Micro-Raman spectroscopy of lipid halo and dense-core amyloid plaques: aging process characterization in the Alzheimer's disease APPswePS1ΔE9 mouse model. Analyst 2021; 146:6014-6025. [PMID: 34505596 DOI: 10.1039/d1an01078f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The deposition of amyloid plaques is considered one of the main microscopic features of Alzheimer's disease (AD). Since plaque formation can precede extensive neurodegeneration and it is the main clinical manifestation of AD, it constitutes a relevant target for new treatment and diagnostic approaches. Micro-Raman spectroscopy, a label-free technique, is an accurate method for amyloid plaque identification and characterization. Here, we present a high spatial resolution micro-Raman hyperspectral study in transgenic APPswePS1ΔE9 mouse brains, showing details of AD tissue biochemical and histological changes without staining. First we used stimulated micro-Raman scattering to identify the lipid-rich halo surrounding the amyloid plaque, and then proceeded with spontaneous (conventional) micro-Raman spectral mapping, which shows a cholesterol and sphingomyelin lipid-rich halo structure around dense-core amyloid plaques. The detailed images of this lipid halo relate morphologically well with dystrophic neurites surrounding plaques. Principal Component Analysis (PCA) of the micro-Raman hyperspectral data indicates the feasibility of the optical biomarkers of AD progression with the potential for discriminating transgenic groups of young adult mice (6-month-old) from older ones (12-month-old). Frequency-specific PCA suggests that plaque-related neurodegeneration is the predominant change captured by Raman spectroscopy, and the main differences are highlighted by vibrational modes associated with cholesterol located majorly in the lipid halo.
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Affiliation(s)
- Emerson A Fonseca
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil. .,Programa de Pós-Graduação em Inovação Tecnológica e Biofarmacêutica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Lucas Lafeta
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
| | - João Luiz Campos
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
| | - Renan Cunha
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
| | - Alexandre Barbosa
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil. .,Departamento de Oftalmologia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30130-100, Brazil
| | - Marco A Romano-Silva
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30130-100, Brazil
| | - Rafael Vieira
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Leandro M Malard
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
| | - Ado Jorio
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil. .,Programa de Pós-Graduação em Inovação Tecnológica e Biofarmacêutica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
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Miranda DM, Reis ZSN, Romano-Silva MA, Malloy-Diniz L, da Silva AG. Expectations when you are expecting in times of COVID-19. ACTA ACUST UNITED AC 2021; 43:347-348. [PMID: 32997077 PMCID: PMC8352730 DOI: 10.1590/1516-4446-2020-1209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/31/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Debora M Miranda
- Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Zilma S N Reis
- Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Centro de Tecnologia em Medicina Molecular, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Leandro Malloy-Diniz
- Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
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Dos Santos RR, Bernardino TC, da Silva MCM, de Oliveira ACP, Drumond LE, Rosa DV, Massensini AR, Moraes MFD, Doretto MC, Romano-Silva MA, Reis HJ. Neurochemical abnormalities in the hippocampus of male rats displaying audiogenic seizures, a genetic model of epilepsy. Neurosci Lett 2021; 761:136123. [PMID: 34293418 DOI: 10.1016/j.neulet.2021.136123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/27/2021] [Revised: 07/11/2021] [Accepted: 07/16/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Epilepsy is a disorder characterized by recurrent seizures that affects 1% of the population. However, the neurochemical alterations observed in epilepsy are not fully understood. There are different animal models of epilepsy, such as genetic or drug induced. In the present study, we utilize Wistar Audiogenic Rats (WAR), a murine strain that develops seizures in response to high intensity audio stimulation, in order to investigate abnormalities in glutamatergic and GABAergic systems. METHODS Synaptosomes and glial plasmalemmal vesicles were prepared from hippocampus and cortex, respectively. Glutamate and GABA release and uptake were assayed by monitoring the fluorescence and using L-[3H]-radiolabeled compounds. Glutamate and calcium concentration in the synaptosomes were also measured. The expression of neuronal calcium sensor 1 (NCS-1) was determined by western blot. RESULTS Glutamate and GABA release evoked by KCl was decreased in WAR compared to control Wistar rats. Calcium independent release was not considerably different in both groups. The total amount of glutamate of synaptosomes, as well as glutamate uptake by synaptosomes and GPV were also decreased in WAR in comparison with the controls. In addition, [Ca2+]i of hippocampal synaptosomes, as well as NCS-1 expression in the hippocampus, were increased in WAR in comparison with controls. CONCLUSION In conclusion, our results suggest that WAR have important alterations in the glutamatergic and GABAergic pathways, as well as an increased expression of NCS-1 in the hippocampus and inferior colliculus. These alterations may be linked to the spreading of hyperexcitability and recruitment of various brain regions.
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Affiliation(s)
- Rodrigo Ribeiro Dos Santos
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais. Av Alfredo Balena 190, CEP 30130-100 Belo Horizonte, MG, Brazil; Laboratório de Neurofarmacologia, Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Túlio C Bernardino
- Laboratório de Neurofarmacologia, Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Maria Carolina Machado da Silva
- Laboratório de Neurofarmacologia, Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Antônio C P de Oliveira
- Laboratório de Neurofarmacologia, Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Luciana E Drumond
- Núcleo de Neurociências, Departamento de Biofísica e Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Daniela V Rosa
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais. Av Alfredo Balena 190, CEP 30130-100 Belo Horizonte, MG, Brazil
| | - André R Massensini
- Núcleo de Neurociências, Departamento de Biofísica e Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Márcio F D Moraes
- Núcleo de Neurociências, Departamento de Biofísica e Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Maria C Doretto
- Núcleo de Neurociências, Departamento de Biofísica e Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais. Av Alfredo Balena 190, CEP 30130-100 Belo Horizonte, MG, Brazil
| | - Helton J Reis
- Laboratório de Neurofarmacologia, Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av Antonio Carlos 6627, Campus Pampulha, CEP 30190-901 Belo Horizonte, MG, Brazil.
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Cunha R, Lafeta L, Fonseca EA, Barbosa A, Romano-Silva MA, Vieira R, Jorio A, Malard LM. Nonlinear and vibrational microscopy for label-free characterization of amyloid-β plaques in Alzheimer's disease model. Analyst 2021; 146:2945-2954. [DOI: 10.1039/d1an00074h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Multimodal optical imaging was used for characterization of amyloid-β plaques in mouse brain tissues. We obtained high-resolution images for different biomarkers and investigated vibrational fingerprints that could be used for diagnostic purposes.
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Affiliation(s)
- Renan Cunha
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Lucas Lafeta
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Emerson A. Fonseca
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Alexandre Barbosa
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Marco A. Romano-Silva
- Departamento de Saúde Mental
- Faculdade de Medicina
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Rafael Vieira
- Departamento de Bioquímica e Imunologia
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Ado Jorio
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
| | - Leandro M. Malard
- Departamento de Física
- ICEx
- Universidade Federal de Minas Gerais
- Belo Horizonte
- Brazil
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6
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Mesquita PHC, Franchini E, Romano-Silva MA, Lage GM, Albuquerque MR. Transcranial Direct Current Stimulation: No Effect on Aerobic Performance, Heart Rate, or Rating of Perceived Exertion in a Progressive Taekwondo-Specific Test. Int J Sports Physiol Perform 2020; 15:958-963. [PMID: 32023547 DOI: 10.1123/ijspp.2019-0410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 09/16/2019] [Accepted: 10/09/2019] [Indexed: 10/27/2023]
Abstract
PURPOSE To investigate the effects of anodal transcranial direct current stimulation (a-tDCS) on the aerobic performance, heart rate (HR), and rating of perceived exertion (RPE) of highly trained taekwondo athletes. METHODS Twelve (8 men and 4 women) international/national-level athletes received a-tDCS or sham treatment over the M1 location in a randomized, single-blind crossover design. The stimulation was delivered at 1.5 mA for 15 min using an extracephalic bihemispheric montage. Athletes performed the progressive-specific taekwondo test 10 min after stimulation. HR was monitored continuously during the test, and RPE was registered at the end of each stage and at test cessation. RESULTS There were no significant differences between sham and a-tDCS in time to exhaustion (14.6 and 14.9, respectively, P = .53, effect size = 0.15) and peak kicking frequency (52 and 53.6, respectively, P = .53, effect size = 0.15) or in HR (P > .05) and RPE responses (P > .05). CONCLUSIONS Extracephalic bihemispheric a-tDCS over M1 did not influence the aerobic performance of taekwondo athletes or their psychophysiological responses, so athletes and staff should be cautious when using it in a direct-to-consumer manner.
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7
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Fonseca EA, Lafetá L, Cunha R, Miranda H, Campos J, Medeiros HG, Romano-Silva MA, Silva RA, Barbosa AS, Vieira RP, Malard LM, Jorio A. A fingerprint of amyloid plaques in a bitransgenic animal model of Alzheimer's disease obtained by statistical unmixing analysis of hyperspectral Raman data. Analyst 2020; 144:7049-7056. [PMID: 31657367 DOI: 10.1039/c9an01631g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The global prevalence of Alzheimer's disease (AD) points to endemic levels, especially considering the increase of average life expectancy worldwide. AD diagnosis based on early biomarkers and better knowledge of related pathophysiology are both crucial in the search for medical interventions that are able to modify AD progression. In this study we used unsupervised spectral unmixing statistical techniques to identify the vibrational spectral signature of amyloid β aggregation in neural tissues, as early biomarkers of AD in an animal model. We analyzed spectral images composed of a total of 55 051 Raman spectra obtained from the frontal cortex and hippocampus of five bitransgenic APPswePS1ΔE9 mice, and colocalized amyloid β plaques by other fluorescence techniques. The Raman signatures provided a multifrequency fingerprint consistent with the results of synthesized amyloid β fibrils. The fingerprint obtained from unmixed analysis in neural tissues is shown to provide a detailed image of amyloid plaques in the brain, with the potential to be used as biomarkers for non-invasive early diagnosis and pathophysiology studies in AD on the retina.
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Affiliation(s)
- Emerson A Fonseca
- Departamento de Física, ICEx, UFMG, Belo Horizonte, MG 31270-901, Brazil.
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Costa DS, de Paula JJ, Malloy-Diniz LF, Romano-Silva MA, Miranda DM. Parent SNAP-IV rating of attention-deficit/hyperactivity disorder: accuracy in a clinical sample of ADHD, validity, and reliability in a Brazilian sample. J Pediatr (Rio J) 2019; 95:736-743. [PMID: 30236592 DOI: 10.1016/j.jped.2018.06.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/14/2018] [Accepted: 06/24/2018] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the psychometric properties of the short or multimodal treatment study version of the Swanson, Nolan, and Pelham, Version IV (SNAP-IV) scale, which measures attention-deficit/hyperactivity disorder and oppositional defiant disorder symptoms. METHODS Participants were 765 parents of children from 4 to 16 years old (641 non-attention-deficit/hyperactivity disorder and 124 attention-deficit/hyperactivity disorder children) from Belo Horizonte, Brazil, who reported sociodemographic characteristics and answered the SNAP-IV. Parents of the clinical sample also underwent the K-SADS-PL interview. RESULTS Age was significantly associated with SNAP-IV hyperactivity-impulsivity problems (r=-0.14), but not with inattention or oppositional defiant disorder. Sex was a significant influence on attention-deficit/hyperactivity disorder and oppositional defiant disorder severity (all p<0.001), with boys showing higher scores in the full sample, but not within the attention-deficit/hyperactivity disorder group. Exploratory and confirmatory factor analysis supports a three-factor structure of the SNAP-IV scale. Moderate-to-strong correlations were found between SNAP-IV and K-SADS-PL measures. All SNAP-IV scales showed very high internal consistency coefficients (all above 0.91). SNAP-IV inattention scores were the most predictive of attention-deficit/hyperactivity disorder diagnosis (AUC: 0.877 for the averaging rating method and the raw sum method, and 0.874 for the symptom presence/absence method). CONCLUSION The parent SNAP-IV showed good psychometric properties in a Brazilian school and clinical sample.
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Affiliation(s)
- Danielle S Costa
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil
| | - Jonas Jardim de Paula
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil; Faculdade de Ciências Médicas de Minas Gerais, Departamento de Psicologia, Belo Horizonte, MG, Brazil.
| | - Leandro F Malloy-Diniz
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Saúde Mental, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Saúde Mental, Belo Horizonte, MG, Brazil
| | - Débora M Miranda
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Pediatria, Belo Horizonte, MG, Brazil
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Porto AA, Costa DDS, Malloy-Diniz LF, Romano-Silva MA, de Paula JJ. "I want it all, I want it all, I want it all, and I want it now!" Is higher impulsivity associated with higher satisfaction with life? Braz J Psychiatry 2019; 41:459-460. [PMID: 31644780 PMCID: PMC6796822 DOI: 10.1590/1516-4446-2019-0483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/30/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Aline A Porto
- Laboratório de Ensino e Pesquisa em Neuropsicologia (Labep-Neuro), Belo Horizonte, MG, Brazil
| | - Danielle de S Costa
- Laboratório de Ensino e Pesquisa em Neuropsicologia (Labep-Neuro), Belo Horizonte, MG, Brazil.,Programa de Pós-Graduação em Medicina Molecular, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Leandro F Malloy-Diniz
- Programa de Pós-Graduação em Medicina Molecular, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Programa de Pós-Graduação em Medicina Molecular, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Jonas J de Paula
- Laboratório de Ensino e Pesquisa em Neuropsicologia (Labep-Neuro), Belo Horizonte, MG, Brazil.,Programa de Pós-Graduação em Medicina Molecular, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
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Abstract
Cerebral pericytes are perivascular cells that stabilize blood vessels. Little is known about the plasticity of pericytes in the adult brain in vivo. Recently, using state-of-the-art technologies, including two-photon microscopy in combination with sophisticated Cre/loxP in vivo tracing techniques, a novel role of pericytes was revealed in vascular remodeling in the adult brain. Strikingly, after pericyte ablation, neighboring pericytes expand their processes and prevent vascular dilatation. This new knowledge provides insights into pericyte plasticity in the adult brain.
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Affiliation(s)
- Gabryella S P Santos
- Departamento de Patologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Luiz A V Magno
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, 30130-100, Brazil
| | - Marco A Romano-Silva
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, 30130-100, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Alexander Birbrair
- Departamento de Patologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
- Department of Radiology, Columbia University Medical Center, New York, NY, 10032, USA.
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11
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Picoli CC, Coimbra-Campos LMC, Guerra DAP, Silva WN, Prazeres PHDM, Costa AC, Magno LAV, Romano-Silva MA, Mintz A, Birbrair A. Pericytes Act as Key Players in Spinal Cord Injury. Am J Pathol 2019; 189:1327-1337. [PMID: 31014955 DOI: 10.1016/j.ajpath.2019.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 03/08/2019] [Accepted: 03/28/2019] [Indexed: 02/06/2023]
Abstract
Spinal cord injury results in locomotor impairment attributable to the formation of an inhibitory fibrous scar, which prevents axonal regeneration after trauma. The scarcity of knowledge about the molecular and cellular mechanisms involved in scar formation after spinal cord lesion impede the design of effective therapies. Recent studies, by using state-of-the-art technologies, including genetic tracking and blockage of pericytes in combination with optogenetics, reveal that pericyte blockage facilitates axonal regeneration and neuronal integration into the local neural circuitry. Strikingly, a pericyte subset is essential during scarring after spinal cord injury, and its arrest results in motor performance improvement. The arising knowledge from current research will contribute to novel approaches to develop therapies for spinal cord injury. We review novel advances in our understanding of pericyte biology in the spinal cord.
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Affiliation(s)
- Caroline C Picoli
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Daniel A P Guerra
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Walison N Silva
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Pedro H D M Prazeres
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Alinne C Costa
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Luiz A V Magno
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Marco A Romano-Silva
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, New York
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil; Department of Radiology, Columbia University Medical Center, New York, New York.
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Andreotti JP, Silva WN, Costa AC, Picoli CC, Bitencourt FCO, Coimbra-Campos LMC, Resende RR, Magno LAV, Romano-Silva MA, Mintz A, Birbrair A. Neural stem cell niche heterogeneity. Semin Cell Dev Biol 2019; 95:42-53. [PMID: 30639325 DOI: 10.1016/j.semcdb.2019.01.005] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [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: 11/14/2018] [Revised: 12/02/2018] [Accepted: 01/08/2019] [Indexed: 12/15/2022]
Abstract
In mammals, new neurons can be generated from neural stem cells in specific regions of the adult brain. Neural stem cells are characterized by their abilities to differentiate into all neural lineages and to self-renew. The specific microenvironments regulating neural stem cells, commonly referred to as neurogenic niches, comprise multiple cell populations whose precise contributions are under active current exploration. Understanding the cross-talk between neural stem cells and their niche components is essential for the development of therapies against neurological disorders in which neural stem cells function is altered. In this review, we describe and discuss recent studies that identified novel components in the neural stem cell niche. These discoveries bring new concepts to the field. Here, we evaluate these recent advances that change our understanding of the neural stem cell niche heterogeneity and its influence on neural stem cell function.
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Affiliation(s)
- Julia P Andreotti
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Walison N Silva
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alinne C Costa
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Caroline C Picoli
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flávia C O Bitencourt
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Rodrigo R Resende
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luiz A V Magno
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, NY, USA
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Radiology, Columbia University Medical Center, New York, NY, USA.
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13
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Andreotti JP, Prazeres PHDM, Magno LAV, Romano-Silva MA, Mintz A, Birbrair A. Neurogenesis in the postnatal cerebellum after injury. Int J Dev Neurosci 2018; 67:33-36. [PMID: 29555564 PMCID: PMC6069997 DOI: 10.1016/j.ijdevneu.2018.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 03/02/2018] [Accepted: 03/08/2018] [Indexed: 12/21/2022] Open
Abstract
The cerebellum plays major role in motor coordination and learning. It contains half of the neurons in the brain. Thus, deciphering the mechanisms by which cerebellar neurons are generated is essential to understand the cerebellar functions and the pathologies associated with it. In a recent study, Wojcinski et al. (2017) by using in vivo Cre/loxP technologies reveal that Nestin-expressing progenitors repopulated the external granular cell layer after injury. Depletion of postnatal external granular cell layer is not sufficient to induce motor behavior defects in adults, as the cerebellum recovers these neurons. Strikingly, Nestin-expressing progenitors differentiate into granule cell precursors and mature granule neurons after ablation of perinatal external granular layer, either by irradiation or by genetic ablation. This work identified a novel role of Nestin-expressing progenitors in the cerebellar microenvironment during development, and revealed that extracellular signals can convert specified progenitors into multipotent stem cells. Here, we discuss the findings from this study, and evaluate recent advances in our understanding of the cerebellar neurogenesis.
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Affiliation(s)
- Julia P Andreotti
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Pedro H D M Prazeres
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luiz A V Magno
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Akiva Mintz
- Department of Radiology, Columbia University Medical Center, New York, NY, USA
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Radiology, Columbia University Medical Center, New York, NY, USA.
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14
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de Paula JJ, Costa DS, Miranda DMD, Romano-Silva MA. Brazilian version of the Cognitive Failures Questionnaire (CFQ): cross-cultural adaptation and evidence of validity and reliability. ACTA ACUST UNITED AC 2017; 40:312-315. [PMID: 29236920 PMCID: PMC6899407 DOI: 10.1590/1516-4446-2017-2227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 08/07/2017] [Indexed: 11/21/2022]
Abstract
Objective: Cognitive failures are simple mistakes in routine activities, such as forgetting commitments and experiencing difficulty concentrating. The Cognitive Failures Questionnaire (CFQ) was designed to assess the frequency of these errors in everyday life. Although widely used in psychiatry and psychology, both in clinical and research settings, it has not been adapted for use in Brazil. Our objective was to perform cross-cultural adaptation of the CFQ for the Brazilian reality and assess its validity and reliability. Methods: The original version of the CFQ was translated into Brazilian Portuguese by two independent researchers, analyzed by a multidisciplinary board of experts, and back-translated into English. The final version was administered to 225 adults. Validity was assessed by correlation with the Self Reporting Questionnaire-20 (SRQ-20) and the Adult Attention Deficit/Hyperactivity Disorder Self-Report Scale (ASRS-18). Reliability was analyzed by calculating internal consistency and test-retest stability. Results: The adapted version of the CFQ showed significant correlations with SRQ-20 (r = -0.311), ASRS-18 inattention (r = 0.696), and hyperactivity/impulsivity (r = 0.405) scores. Reliability analysis suggests high internal consistency (0.906) and temporal stability (0.813). Conclusion: The Brazilian Portuguese version of the CFQ showed moderate correlations with other measures of mental health, as well as adequate reliability.
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Affiliation(s)
- Jonas J de Paula
- Programa de Pós-Graduação, Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Psicologia, Faculdade de Ciências Médicas de Minas Gerais (FCM-MG), Belo Horizonte, MG, Brazil.,Laboratório de Ensino e Pesquisa em Neuropsicologia, Belo Horizonte, MG, Brazil
| | - Danielle S Costa
- Programa de Pós-Graduação, Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Laboratório de Ensino e Pesquisa em Neuropsicologia, Belo Horizonte, MG, Brazil
| | - Débora M de Miranda
- Programa de Pós-Graduação, Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Pediatria, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Programa de Pós-Graduação, Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
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15
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de Alvarenga KAF, Sacramento EK, Rosa DV, Souza BR, de Rezende VB, Romano-Silva MA. Effects of antipsychotics on intestinal motility in zebrafish larvae. Neurogastroenterol Motil 2017; 29. [PMID: 27981679 DOI: 10.1111/nmo.13006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 11/09/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND Antipsychotics are essential for the treatment of schizophrenia. However, due to side effects, both continuity of treatment and patients' general health can be jeopardized. Some of these drugs, especially clozapine, have a class of side effects attributed to their antimuscarinic properties, such as dysmotility, a condition in which muscles of the digestive system become impaired. Dysmotility may also alter the speed, strength or coordination of the digestive organs, causing distention, disturbing gastrointestinal transit, leading to symptoms such as bloating, nausea, vomiting, and even malnutrition. In this study, our aim was to develop an in vivo assay capable of identifying and studying the antimuscarinic effects of antipsychotics in a zebrafish model. METHODS We performed video recordings of in vivo 5-day postfertilization (dpf) zebrafish larvae gastrointestinal tracts and analyzed the frequency of spontaneous and regular cycles of contractions of the gut. KEY RESULTS The assay was first validated with treatment with atropine. We showed that this antimuscarinic drug reduces peristaltic cycles. Subsequently, the larvae were treated with the antipsychotics haloperidol, risperidone, and clozapine. Neither haloperidol nor risperidone reduced gut motility, but clozapine significantly reduced the frequency of cycles of contractions (P<.0001), which confirms the existing clinical data. CONCLUSIONS & INFERENCES We conclude that this zebrafish assay efficiently identifies anticholinergic side effects of antipsychotics, and can thus be a quick and useful way to screen for this property in new drugs.
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Affiliation(s)
- K A F de Alvarenga
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil
| | - E K Sacramento
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil
| | - D V Rosa
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil
| | - B R Souza
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil.,Núcleo de Neurociências, Departamento de Fisiologia e Biofísica, UFMG, Belo Horizonte, Brazil
| | - V B de Rezende
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil
| | - M A Romano-Silva
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Belo Horizonte, Brazil
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16
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de Paula JJ, Malloy-Diniz LF, Romano-Silva MA. Reliability of working memory assessment in neurocognitive disorders: a study of the Digit Span and Corsi Block-Tapping tasks. Braz J Psychiatry 2017; 38:262-3. [PMID: 27579598 PMCID: PMC7194262 DOI: 10.1590/1516-4446-2015-1879] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 12/13/2015] [Indexed: 11/24/2022]
Affiliation(s)
- Jonas J de Paula
- Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Psicologia, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leandro F Malloy-Diniz
- Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Instituto Nacional de Ciência e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
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17
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Schütze M, Romanelli LCF, Rosa DV, Carneiro-Proietti ABF, Nicolato R, Romano-Silva MA, Brammer M, de Miranda DM. Brain Metabolism Changes in Patients Infected with HTLV-1. Front Mol Neurosci 2017; 10:52. [PMID: 28293169 PMCID: PMC5329009 DOI: 10.3389/fnmol.2017.00052] [Citation(s) in RCA: 13] [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: 08/05/2016] [Accepted: 02/14/2017] [Indexed: 12/22/2022] Open
Abstract
The Human T-cell leukemia virus type-I (HTLV-1) is the causal agent of HTLV-associated myelopathy/Tropical Spastic Paraparesis (HAM/TSP). HAM/TSP is the result of demyelination and cell death in the spinal cord and disruption of the blood-brain barrier (BBB), mediated by a virus-induced inflammatory response. In this study, we applied Positron Emission Tomography with 18F-fluordeoxyglucose (18F-FDG PET) to evaluate brain metabolism in a group of 47 patients infected with HTLV-1, and 18 healthy controls. Patients were divided into three groups according to their neurological symptoms. A machine learning (ML) based Gaussian Processes classification algorithm (GPC) was applied to classify between patient groups and controls and also to organize the three patient groups, based on gray and white matter brain metabolism. We found that GPC was able to differentiate the HAM/TSP group from controls with 85% accuracy (p = 0.003) and the asymptomatic seropositive patients from controls with 85.7% accuracy (p = 0.001). The weight map suggests diffuse cortical hypometabolism in both patient groups when compared to controls. We also found that the GPC could separate the asymptomatic HTLV-1 patients from the HAM/TSP patients, but with a lower accuracy (72.7%, p = 0.026). The weight map suggests a diffuse pattern of lower metabolism in the asymptomatic group when compared to the HAM/TSP group. These results are compatible with distinctive patterns of glucose uptake into the brain of HTLV-1 patients, including those without neurological symptoms, which differentiate them from controls. Furthermore, our results might unveil surprising aspects of the pathophysiology of HAM/TSP and related diseases, as well as new therapeutic strategies.
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Affiliation(s)
- Manuel Schütze
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Luiz C F Romanelli
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Fundação HemominasBelo Horizonte, Brazil; Grupo Interdisciplinar de Pesquisas em HTLV - GIPHBelo Horizonte, Brazil
| | - Daniela V Rosa
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Anna B F Carneiro-Proietti
- Fundação HemominasBelo Horizonte, Brazil; Grupo Interdisciplinar de Pesquisas em HTLV - GIPHBelo Horizonte, Brazil
| | - Rodrigo Nicolato
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Marco A Romano-Silva
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Michael Brammer
- Department of Neuroimaging, Institute of Psychiatry (PO89) London, UK
| | - Débora M de Miranda
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
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18
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Albuquerque MR, Malloy-Diniz LF, Romano-Silva MA, de Paula JJ, de Castro Neves M, Lage GM. Can Eye Fixation During the Grooved Pegboard Test Distinguish Between Planning and Online Correction? Percept Mot Skills 2016; 124:380-392. [PMID: 28361648 DOI: 10.1177/0031512516685000] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Grooved Pegboard Test, in its standard use, has well-documented utility. However, a revised methodology needs further study, leading us to investigate whether duration of eye fixation could predict performance on different task conditions of the Grooved Pegboard Test (place and remove pegs) with the preferred and nonpreferred hands. Fifty-two right-handed undergraduate students (33 male and 19 female), with a mean age of 22.22 (±3.57) years, performed the Grooved Pegboard Test. SensoMotoric eye-tracking glasses with a binocular time resolution of 30 Hz were used to measure eye fixation. The videos were recorded in iView software, and data were analyzed using BeGaze software. The number and duration of eye fixations were statistically different with preferred and nonpreferred hands and also differed across tasks. Simple linear regression showed eye fixation duration to predict movement time in the place task (preferred hand: R2 = 31%; nonpreferred hand: R2 = 41%) and in the remove task (preferred hand: R2 = 11%; nonpreferred hand: R2 = 25%). Thus, duration of eye fixation during the Grooved Pegboard Test differentially predicted performance with each hand and on preferred and different subtests of this instrument.
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Affiliation(s)
- Maicon R Albuquerque
- 1 Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Leandro F Malloy-Diniz
- 1 Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marco A Romano-Silva
- 1 Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jonas J de Paula
- 1 Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Guilherme M Lage
- 1 Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Corrêa H, Castro E Couto T, Santos W, Romano-Silva MA, Santos LMP. Postpartum depression symptoms among Amazonian and Northeast Brazilian women. J Affect Disord 2016; 204:214-8. [PMID: 27372408 DOI: 10.1016/j.jad.2016.06.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 04/15/2016] [Revised: 06/06/2016] [Accepted: 06/11/2016] [Indexed: 11/18/2022]
Abstract
BACKGROUND Studies analyzing the prevalence of postpartum depression in Brazil have recently increased. However, few studies have examined the Northeast region of Brazil, and no studies have investigated the Amazon region. Therefore, the aim of this study was to investigate postpartum depression in these two regions. METHODS We administered the Edinburgh Postnatal Depression Scale to a total of 3060 women who used the Brazilian public health system and had given birth between one and three months prior to the interview. A cut-off score ≥11 was used to indicate symptoms of postpartum depression. After calculating the prevalence, univariate logistic regressions were performed separately for several possible risk factors (p<0.05). RESULTS The overall rate of reported symptoms of postpartum depression was 19.5%. The prevalence in the northeast region and Amazon region were 19.0% and 20.3%, respectively (p=0.36). In the univariate logistic regression, low education level (<7 years: p<0.001; 8-10 years: p=0.003), ethnicity (Black: p=0.02; Pardo: p=0.02), few prenatal visits (1 or 2 visits: p=0.04), prenatal care self-assessed as "not very good" (p<0.001) and the prenatal care adequacy index of partially suitable (p=0.01) or not suitable (p<0.001) were identified as significant risk factors for postpartum depression symptoms. LIMITATIONS Mothers who did not bring their children for immunization. The cross-sectional study does not allow for causality to be established. CONCLUSION the prevalence rates of postpartum depression were similar to the rates observed for developing countries and higher than the rates observed in developed countries. Based on these findings, we recommend that screening and treatment of pregnant women should be considered a public health priority.
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Affiliation(s)
- H Corrêa
- Postgraduation Program in Molecular Medicine, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Mental Health, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; National Institute of Science and Technology-Molecular Medicine, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - T Castro E Couto
- Postgraduation Program in Molecular Medicine, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - W Santos
- Postgraduation Program in Collective Health, University of Brasília, Brasília, DF, Brazil
| | - M A Romano-Silva
- Postgraduation Program in Molecular Medicine, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Mental Health, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; National Institute of Science and Technology-Molecular Medicine, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - L M P Santos
- Postgraduation Program in Collective Health, University of Brasília, Brasília, DF, Brazil; Department of Collective Health, University of Brasília, Brasília, DF, Brazil
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20
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Costa DDS, de Paula JJ, Alvim-Soares AM, Pereira PA, Malloy-Diniz LF, Rodrigues LOC, Romano-Silva MA, de Miranda DM. COMT Val(158)Met Polymorphism Is Associated with Verbal Working Memory in Neurofibromatosis Type 1. Front Hum Neurosci 2016; 10:334. [PMID: 27458360 PMCID: PMC4932101 DOI: 10.3389/fnhum.2016.00334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 12/01/2015] [Accepted: 06/16/2016] [Indexed: 12/26/2022] Open
Abstract
Neurofibromatosis type I (NF1) is a neurogenetic disease marked by multiple cognitive and learning problems. Genetic variants may account for phenotypic variance in NF1. Here, we investigated the association between the catechol-O-methyltransferase (COMT) Val(158)Met polymorphism and working memory and arithmetic performance in 50 NF1 individuals. A significant association of the COMT polymorphism was observed only with verbal working memory, as measured by the backward digit-span task with an advantageous performance for Met/Met carriers. To study how genetic modifiers influence NF1 cognitive performance might be of importance to decrease the unpredictability of the cognitive profile among NF1 patients.
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Affiliation(s)
- Danielle de Souza Costa
- Postgraduate Program in Molecular Medicine, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Jonas J. de Paula
- Postgraduate Program in Molecular Medicine, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
- Department of Psychology, Faculty of Medical Sciences of Minas GeraisBelo Horizonte, Brazil
| | - Antonio M. Alvim-Soares
- Postgraduate Program in Molecular Medicine, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Patrícia A. Pereira
- Postgraduate Program in Molecular Medicine, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Leandro F. Malloy-Diniz
- Department of Psychiatry, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
- National Institute of Science and Technology of Molecular MedicineBelo Horizonte, Brazil
| | - Luiz O. C. Rodrigues
- Neurofibromatosis Outpatient Reference Center, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
| | - Marco A. Romano-Silva
- Department of Psychiatry, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
- National Institute of Science and Technology of Molecular MedicineBelo Horizonte, Brazil
| | - Débora M. de Miranda
- National Institute of Science and Technology of Molecular MedicineBelo Horizonte, Brazil
- Department of Pediatrics, School of Medicine, Federal University of Minas GeraisBelo Horizonte, Brazil
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21
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Torres KCL, Lima G, Simões E Silva AC, Lubambo I, Rodrigues LO, Rodrigues L, Silveira KD, Vieira ÉLM, Romano-Silva MA, Miranda DM. Immune markers in the RASopathy neurofibromatosis type 1. J Neuroimmunol 2016; 295-296:122-9. [PMID: 27235357 DOI: 10.1016/j.jneuroim.2016.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 09/25/2015] [Revised: 04/06/2016] [Accepted: 04/10/2016] [Indexed: 12/14/2022]
Abstract
Neurofibromatosis type 1 (NF1) is a genetic disorder with an early mortality determined mostly by malignancy. Little is known about the immunosurveillance factors in NF1 patients. In this study we evaluated inflammatory markers and their cellular sources in NF1 patients to try understanding the relation of immune factors and the tumorigenesis that characterizes the disease. Using flow cytometry and ELISA, we assayed cytokines, co-stimulatory molecules, the functional state of circulating blood cells and cytokine plasma levels in a case-control transversal study. The frequency of CD4+ T cells seems reduced. In addition, a shift towards an anti-inflammatory profile was observed in cells expressing cytokines, except for a small subpopulation of CD8+ T cells that displayed an increased frequency of cells expressing the pro-inflammatory cytokine Tumor necrosis factor (TNF-α), while plasma soluble levels of Transforming growth factor-beta (TGF-β) and interleukin-6 (IL-6) were increased in NF1 patients. Knowledge of the regulation of NF1 and the role of TGF-beta signaling pathway in malignant peripheral nerve sheath tumor pathogenesis might shed light on molecular carcinogenesis mechanisms and lead to putative interventions both in prevention and treatment of malignant tumors.
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Affiliation(s)
- Karen C L Torres
- INCT de Medicina Molecular/Laboratório de Neurociência, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, Brazil
| | - Giselle Lima
- INCT de Medicina Molecular/Laboratório de Neurociência, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana C Simões E Silva
- Laboratório Interdisciplinar de Investigação Médica, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Isabela Lubambo
- INCT de Medicina Molecular/Laboratório de Neurociência, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiz O Rodrigues
- Centro de Referência em Neurofibromatoses do Hospital das Clínicas, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiza Rodrigues
- Centro de Referência em Neurofibromatoses do Hospital das Clínicas, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Kátia D Silveira
- Laboratório Interdisciplinar de Investigação Médica, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Érica L M Vieira
- Laboratório Interdisciplinar de Investigação Médica, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marco A Romano-Silva
- INCT de Medicina Molecular/Laboratório de Neurociência, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Débora M Miranda
- INCT de Medicina Molecular/Laboratório de Neurociência, Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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22
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de Paula JJ, Albuquerque MR, Lage GM, Bicalho MA, Romano-Silva MA, Malloy-Diniz LF. Impairment of fine motor dexterity in mild cognitive impairment and Alzheimer's disease dementia: association with activities of daily living. ACTA ACUST UNITED AC 2016; 38:235-8. [PMID: 27508398 PMCID: PMC7194270 DOI: 10.1590/1516-4446-2015-1874] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [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: 12/02/2015] [Accepted: 01/23/2016] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Cognitive impairment is a hallmark of mild cognitive impairment (MCI) and Alzheimer's disease dementia (AD). Although the cognitive profile of these patients and its association with activities of daily living (ADLs) is well documented, few studies have assessed deficits in fine motor dexterity and their association with ADL performance. The objective of this research paper is to evaluate fine motor dexterity performance among MCI and AD patients and to investigate its association with different aspects of ADLs. METHODS We assessed normal aging controls, patients with multiple- and single-domain amnestic MCI (aMCI), and patients with mild AD. Fine motor dexterity was measured with the Nine-Hole Peg Test and cognitive functioning by the Mattis Dementia Rating Scale. We analyzed the data using general linear models. RESULTS Patients with AD or multiple-domain aMCI had slower motor responses when compared to controls. AD patients were slower than those with single-domain aMCI. We found associations between cognition and instrumental ADLs, and between fine motor dexterity and self-care ADLs. CONCLUSION We observed progressive slowing of fine motor dexterity along the normal aging-MCI-AD spectrum, which was associated with autonomy in self-care ADLs.
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Affiliation(s)
- Jonas J de Paula
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Psicologia, Faculdade de Ciências Médicas de Minas Gerais (FCMMG), Belo Horizonte, MG, Brazil
| | - Maicon R Albuquerque
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Educação Física, Universidade Federal de Viçosa (UFV), Viçosa, MG, Brazil
| | - Guilherme M Lage
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Educação Física, UFMG, Belo Horizonte, MG, Brazil
| | - Maria A Bicalho
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Clínica Médica, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
| | - Leandro F Malloy-Diniz
- Instituto Nacional de Ciências e Tecnologia em Medicina Molecular (INCT-MM), Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, UFMG, Belo Horizonte, MG, Brazil
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23
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de Paula JJ, Bicalho MA, Ávila RT, Cintra MTG, Diniz BS, Romano-Silva MA, Malloy-Diniz LF. A Reanalysis of Cognitive-Functional Performance in Older Adults: Investigating the Interaction Between Normal Aging, Mild Cognitive Impairment, Mild Alzheimer's Disease Dementia, and Depression. Front Psychol 2016; 6:2061. [PMID: 26858666 PMCID: PMC4727063 DOI: 10.3389/fpsyg.2015.02061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 08/12/2015] [Accepted: 12/31/2015] [Indexed: 12/12/2022] Open
Abstract
Depressive symptoms are associated with cognitive-functional impairment in normal aging older adults (NA). However, less is known about this effect on people with mild Cognitive Impairment (MCI) and mild Alzheimer's disease dementia (AD). We investigated this relationship along with the NA-MCI-AD continuum by reanalyzing a previously published dataset. Participants (N = 274) underwent comprehensive neuropsychological assessment including measures of Executive Function, Language/Semantic Memory, Episodic Memory, Visuospatial Abilities, Activities of Daily Living (ADL), and the Geriatric Depression Scale. MANOVA, logistic regression and chi-square tests were performed to assess the association between depression and cognitive-functional performance in each group. In the NA group, depressed participants had a lower performance compared to non-depressed participants in all cognitive and functional domains. However, the same pattern was not observed in the MCI group or in AD. The results suggest a progressive loss of association between depression and worse cognitive-functional performance along the NA-MCI-AD continuum.
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Affiliation(s)
- Jonas J de Paula
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Department of Psychology, Faculdade de Ciências Médicas de Minas GeraisBelo Horizonte, Brazil
| | - Maria A Bicalho
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Department of Internal Medicine, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Reference Center for Geriatrics Instituto Jenny de Andrade Faria, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Rafaela T Ávila
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Reference Center for Geriatrics Instituto Jenny de Andrade Faria, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Marco T G Cintra
- Reference Center for Geriatrics Instituto Jenny de Andrade Faria, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Breno S Diniz
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Marco A Romano-Silva
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
| | - Leandro F Malloy-Diniz
- Faculdade de Medicina, Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas GeraisBelo Horizonte, Brazil; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas GeraisBelo Horizonte, Brazil
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24
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de Paula JJ, Diniz BS, Bicalho MA, Albuquerque MR, Nicolato R, de Moraes EN, Romano-Silva MA, Malloy-Diniz LF. Specific cognitive functions and depressive symptoms as predictors of activities of daily living in older adults with heterogeneous cognitive backgrounds. Front Aging Neurosci 2015; 7:139. [PMID: 26257644 PMCID: PMC4507055 DOI: 10.3389/fnagi.2015.00139] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 02/08/2015] [Accepted: 07/06/2015] [Indexed: 12/28/2022] Open
Abstract
Cognitive functioning influences activities of daily living (ADL). However, studies reporting the association between ADL and neuropsychological performance show inconsistent results regarding what specific cognitive domains are related to each specific functional domains. Additionally, whether depressive symptoms are associated with a worse functional performance in older adults is still under explored. We investigated if specific cognitive domains and depressive symptoms would affect different aspects of ADL. Participants were 274 older adults (96 normal aging participants, 85 patients with mild cognitive impairment, and 93 patients probable with mild Alzheimer's disease dementia) with low formal education (∼4 years). Measures of ADL included three complexity levels: Self-care, Instrumental-Domestic, and Instrumental-Complex. The specific cognitive functions were evaluated through a factorial strategy resulting in four cognitive domains: Executive Functions, Language/Semantic Memory, Episodic Memory, and Visuospatial Abilities. The Geriatric Depression Scale measured depressive symptoms. Multiple linear regression analysis showed executive functions and episodic memory as significant predictors of Instrumental-Domestic ADL, and executive functions, episodic memory and language/semantic memory as predictors of Instrumental-Complex ADL (22 and 28% of explained variance, respectively). Ordinal regression analysis showed the influence of specific cognitive functions and depressive symptoms on each one of the instrumental ADL. We observed a heterogeneous pattern of association with explained variance ranging from 22 to 38%. Different instrumental ADL had specific cognitive predictors and depressive symptoms were predictive of ADL involving social contact. Our results suggest a specific pattern of influence depending on the specific instrumental daily living activity.
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Affiliation(s)
- Jonas J de Paula
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Psychology, Faculdade de Ciências Médicas de Minas Gerais Belo Horizonte, Brazil
| | - Breno S Diniz
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Maria A Bicalho
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Internal Medicine, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Maicon Rodrigues Albuquerque
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Physical Education, Universidade Federal de Viçosa Viçosa, Brazil
| | - Rodrigo Nicolato
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Edgar N de Moraes
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Internal Medicine, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Marco A Romano-Silva
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Leandro F Malloy-Diniz
- Faculdade de Medicina, Instituto Nacional de Ciências e Tecnologia e em Medicina Molecular, Universidade Federal de Minas Gerais Belo Horizonte, Brazil ; Department of Mental Health, Faculdade de Medicina, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
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25
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Friedrich DC, Genro JP, Sortica VA, Suarez-Kurtz G, de Moraes ME, Pena SDJ, dos Santos ÂKR, Romano-Silva MA, Hutz MH. Distribution of CYP2D6 alleles and phenotypes in the Brazilian population. PLoS One 2014; 9:e110691. [PMID: 25329392 PMCID: PMC4203818 DOI: 10.1371/journal.pone.0110691] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 09/15/2014] [Indexed: 12/24/2022] Open
Abstract
The CYP2D6 enzyme is one of the most important members of the cytochrome P450 superfamily. This enzyme metabolizes approximately 25% of currently prescribed medications. The CYP2D6 gene presents a high allele heterogeneity that determines great inter-individual variation. The aim of this study was to evaluate the variability of CYP2D6 alleles, genotypes and predicted phenotypes in Brazilians. Eleven single nucleotide polymorphisms and CYP2D6 duplications/multiplications were genotyped by TaqMan assays in 1020 individuals from North, Northeast, South, and Southeast Brazil. Eighteen CYP2D6 alleles were identified in the Brazilian population. The CYP2D6*1 and CYP2D6*2 alleles were the most frequent and widely distributed in different geographical regions of Brazil. The highest number of CYPD6 alleles observed was six and the frequency of individuals with more than two copies ranged from 6.3% (in Southern Brazil) to 10.2% (Northern Brazil). The analysis of molecular variance showed that CYP2D6 is homogeneously distributed across different Brazilian regions and most of the differences can be attributed to inter-individual differences. The most frequent predicted metabolic status was EM (83.5%). Overall 2.5% and 3.7% of Brazilians were PMs and UMs respectively. Genomic ancestry proportions differ only in the prevalence of intermediate metabolizers. The IM predicted phenotype is associated with a higher proportion of African ancestry and a lower proportion of European ancestry in Brazilians. PM and UM classes did not vary among regions and/or ancestry proportions therefore unique CYP2D6 testing guidelines for Brazilians are possible and could potentially avoid ineffective or adverse events outcomes due to drug prescriptions.
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Affiliation(s)
- Deise C. Friedrich
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Júlia P. Genro
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Vinicius A. Sortica
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Guilherme Suarez-Kurtz
- Programa de Farmacologia, Instituto Nacional de Cancer, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Sergio D. J. Pena
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Marco A. Romano-Silva
- Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mara H. Hutz
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Bertola L, Mota NB, Copelli M, Rivero T, Diniz BS, Romano-Silva MA, Ribeiro S, Malloy-Diniz LF. Graph analysis of verbal fluency test discriminate between patients with Alzheimer's disease, mild cognitive impairment and normal elderly controls. Front Aging Neurosci 2014; 6:185. [PMID: 25120480 PMCID: PMC4114204 DOI: 10.3389/fnagi.2014.00185] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [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: 03/24/2014] [Accepted: 07/09/2014] [Indexed: 12/26/2022] Open
Abstract
Verbal fluency is the ability to produce a satisfying sequence of spoken words during a given time interval. The core of verbal fluency lies in the capacity to manage the executive aspects of language. The standard scores of the semantic verbal fluency test are broadly used in the neuropsychological assessment of the elderly, and different analytical methods are likely to extract even more information from the data generated in this test. Graph theory, a mathematical approach to analyze relations between items, represents a promising tool to understand a variety of neuropsychological states. This study reports a graph analysis of data generated by the semantic verbal fluency test by cognitively healthy elderly (NC), patients with Mild Cognitive Impairment-subtypes amnestic (aMCI) and amnestic multiple domain (a+mdMCI)-and patients with Alzheimer's disease (AD). Sequences of words were represented as a speech graph in which every word corresponded to a node and temporal links between words were represented by directed edges. To characterize the structure of the data we calculated 13 speech graph attributes (SGA). The individuals were compared when divided in three (NC-MCI-AD) and four (NC-aMCI-a+mdMCI-AD) groups. When the three groups were compared, significant differences were found in the standard measure of correct words produced, and three SGA: diameter, average shortest path, and network density. SGA sorted the elderly groups with good specificity and sensitivity. When the four groups were compared, the groups differed significantly in network density, except between the two MCI subtypes and NC and aMCI. The diameter of the network and the average shortest path were significantly different between the NC and AD, and between aMCI and AD. SGA sorted the elderly in their groups with good specificity and sensitivity, performing better than the standard score of the task. These findings provide support for a new methodological frame to assess the strength of semantic memory through the verbal fluency task, with potential to amplify the predictive power of this test. Graph analysis is likely to become clinically relevant in neurology and psychiatry, and may be particularly useful for the differential diagnosis of the elderly.
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Affiliation(s)
- Laiss Bertola
- Laboratory of Clinical Neuroscience Investigations, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Natália B Mota
- Brain Institute, Federal University of Rio Grande do Norte Natal, Brazil
| | - Mauro Copelli
- Physics Department, Federal University of Pernambuco Recife, Brazil
| | - Thiago Rivero
- Laboratory of Clinical Neuroscience Investigations, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Breno Satler Diniz
- Laboratory of Clinical Neuroscience Investigations, Federal University of Minas Gerais Belo Horizonte, Brazil ; Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Marco A Romano-Silva
- Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; Faculty of Medicine, National Institute of Science and Technology - Molecular Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Sidarta Ribeiro
- Brain Institute, Federal University of Rio Grande do Norte Natal, Brazil
| | - Leandro F Malloy-Diniz
- Laboratory of Clinical Neuroscience Investigations, Federal University of Minas Gerais Belo Horizonte, Brazil ; Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
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Costa DDS, Paula JJD, Alvim-Soares Júnior AM, Diniz BS, Romano-Silva MA, Malloy-Diniz LF, Miranda DMD. ADHD inattentive symptoms mediate the relationship between intelligence and academic performance in children aged 6-14. ACTA ACUST UNITED AC 2014; 36:313-21. [PMID: 25028778 DOI: 10.1590/1516-4446-2013-1201] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 01/28/2014] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Fluid intelligence and the behavioral problems of attention-deficit/hyperactivity disorder (ADHD) are related to academic performance, but how this association occurs is unclear. This study aimed to assess mediation and moderation models that test possible pathways of influence between these factors. METHODS Sixty-two children with ADHD and 33 age-matched, typically developing students were evaluated with Raven's Colored Progressive Matrices and the spelling and arithmetic subtests of the Brazilian School Achievement Test. Dimensional ADHD symptomatology was reported by parents. RESULTS Our findings suggest that fluid intelligence has a significant impact on academic tests through inattention. The inattentive dimension was the principal behavioral source of influence, also accounting for the association of hyperactive-impulsive manifestations with school achievement. This cognitive-to-behavioral influence path seems to be independent of diagnosis related group, and gender, but lower socioeconomic status might increase its strength. CONCLUSION Fluid intelligence is a relevant factor in the influence of ADHD behavioral symptoms on academic performance, but its impact is indirect. Therefore, early identification of both fluid intelligence and inattentive symptoms is of the utmost importance to prevent impaired academic performance and future difficulties in functioning.
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Affiliation(s)
- Danielle de S Costa
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Jonas J de Paula
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Antônio M Alvim-Soares Júnior
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Breno S Diniz
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Leandro F Malloy-Diniz
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Débora M de Miranda
- National Science and Technology Institute for Molecular Medicine (INCT-MM), School of Medicine, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
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28
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Comim CM, Silva NC, Mina F, Dominguini D, Scaini G, Morais MO, Rosa DV, Magno LAV, Streck EL, Romano-Silva MA, Quevedo J, Dal-Pizzol F. Evaluation of NCS-1, DARPP-32, and neurotrophins in hippocampus and prefrontal cortex in rats submitted to sepsis. Synapse 2014; 68:474-9. [DOI: 10.1002/syn.21760] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/15/2014] [Accepted: 05/29/2014] [Indexed: 01/11/2023]
Affiliation(s)
- Clarissa M. Comim
- Postgraduate Program in Health Sciences; Laboratory of Experimental Neurosciences, Infectious Diseases Unit, University of South Santa Catarina; Palhoça Santa Catarina Brazil
| | - Napoleão C. Silva
- Graduate Program in Health Sciences; Laboratory of Neurosciences, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Francielle Mina
- Graduate Program in Health Sciences; Laboratory of Neurosciences, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Diogo Dominguini
- Graduate Program in Health Sciences; Laboratory of Neurosciences, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Giselli Scaini
- Postgraduate Program in Health Sciences; Laboratory of Experimental Physiopathology, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Meline O.S. Morais
- Postgraduate Program in Health Sciences; Laboratory of Experimental Physiopathology, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Daniela V. Rosa
- Laboratory of Neurosciences; Department of Mental Health; Faculty of Medicine, Federal University of Minas Gerais; 30130-100 Belo Horizonte Minas Gerais Brazil
| | - Luiz Alexandre V. Magno
- Laboratory of Neurosciences; Department of Mental Health; Faculty of Medicine, Federal University of Minas Gerais; 30130-100 Belo Horizonte Minas Gerais Brazil
| | - Emilio L. Streck
- Postgraduate Program in Health Sciences; Laboratory of Experimental Physiopathology, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
| | - Marco A. Romano-Silva
- Laboratory of Neurosciences; Department of Mental Health; Faculty of Medicine, Federal University of Minas Gerais; 30130-100 Belo Horizonte Minas Gerais Brazil
| | - João Quevedo
- Graduate Program in Health Sciences; Laboratory of Neurosciences, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
- Center for Experimental Models in Psychiatry; Department of Psychiatry and Behavioral Sciences; The University of Texas Medical School at Houston; Houston Texas
| | - Felipe Dal-Pizzol
- Postgraduate Program in Health Sciences; Laboratory of Experimental Physiopathology, Health Sciences Unit, University of Southern Santa Catarina; Criciúma Santa Catarina Brazil
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29
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Bertola L, Cunha Lima ML, Romano-Silva MA, de Moraes EN, Diniz BS, Malloy-Diniz LF. Impaired generation of new subcategories and switching in a semantic verbal fluency test in older adults with mild cognitive impairment. Front Aging Neurosci 2014; 6:141. [PMID: 25071550 PMCID: PMC4076742 DOI: 10.3389/fnagi.2014.00141] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 03/17/2014] [Accepted: 06/12/2014] [Indexed: 11/21/2022] Open
Abstract
The semantic verbal fluency task is broadly used in the neuropsychological assessment of elderly subjects. Even some studies have identified differences in verbal fluency clustering and switching measures between subjects with normal aging and a clinical condition such as mild cognitive impairment (MCI) and Alzheimer's disease, the results are not always consistent. This study aimed to compare clustering and switching measures of an animal's semantic verbal fluency task among normal controls (NC, n = 25), amnestic mild cognitive impairment (aMCI; n = 25), amnestic multiple domain Mild Cognitive Impairment (a+mdMCI; n = 25) and Alzheimer's disease (AD; n = 25) Brazilian subjects. The analyses were executed considering three (unifying the MCI subtypes) and four groups. As the data were not normally distributed, we carried out non-parametric tests (Kruskal-Wallis and Mann-Whitney tests) to evaluate the differences in performance in the measures of the verbal fluency test among the groups. The comparison demonstrated that the groups differed in the total of correct words produced, number of clusters and switching but the measure of new subcategories was the only with significant difference among the NC and all the clinical groups. The measure of new subcategories is the number of original subcategories inside the higher category of animals that the subject produced, such as farm, domestic, African animals. Our results indicate that semantic memory impairment is a visible and recent deficit that occurs even in non-demented subjects with very MCI and the implications of these findings are discussed.
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Affiliation(s)
- Laiss Bertola
- Laboratory of Clinical Neuroscience Investigations, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; National Institute of Science and Technology in Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | | | - Marco A Romano-Silva
- National Institute of Science and Technology in Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Edgar N de Moraes
- Medical Clinic Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Breno Satler Diniz
- Laboratory of Clinical Neuroscience Investigations, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; National Institute of Science and Technology in Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Leandro F Malloy-Diniz
- Laboratory of Clinical Neuroscience Investigations, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; National Institute of Science and Technology in Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil ; Mental Health Department, Faculty of Medicine, Federal University of Minas Gerais Belo Horizonte, Brazil
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Lage GM, Miranda DM, Romano-Silva MA, Campos SB, Albuquerque MR, Corrêa H, Malloy-Diniz LF. Association between the catechol-O-methyltransferase (COMT) Val158Met polymorphism and manual aiming control in healthy subjects. PLoS One 2014; 9:e99698. [PMID: 24956262 PMCID: PMC4067272 DOI: 10.1371/journal.pone.0099698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/17/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Prefrontal dopamine is catabolized by the catechol-O-methyltransferase (COMT) enzyme. Current evidence suggests that the val/met single nucleotide polymorphism in the COMT gene can predict the efficiency of executive cognition in humans. Individuals carrying the val allele perform more poorly because less synaptic dopamine is available. METHODOLOGY/PRINCIPAL FINDINGS We investigated the influence of the COMT polymorphism on motor performance in a task that requires different executive functions. We administered a manual aiming motor task that was performed under four different conditions of execution by 111 healthy participants. Participants were grouped according to genotype (met/met, met/val, val/val), and the motor performance among groups was compared. Overall, the results indicate that met/met carriers presented lower levels of peak velocity during the movement trajectory than the val carriers, but met/met carriers displayed higher accuracy than the val carriers. CONCLUSIONS/SIGNIFICANCE This study found a significant association between the COMT polymorphism and manual aiming control. Few studies have investigated the genetics of motor control, and these findings indicate that individual differences in motor control require further investigation using genetic studies.
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Affiliation(s)
- Guilherme M. Lage
- Grupo de Estudo em Desenvolvimento Motor e Aprendizagem Motora (GEDAM), Departamento de Educação Física, Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora M. Miranda
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marco A. Romano-Silva
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Simone B. Campos
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maicon R. Albuquerque
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Educação Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Humberto Corrêa
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Leandro F. Malloy-Diniz
- Laboratório de Investigações em Neurociências Clínicas (LINC), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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31
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Pinto MCX, Simão F, da Costa FLP, Rosa DV, de Paiva MJN, Resende RR, Romano-Silva MA, Gomez MV, Gomez RS. Sarcosine preconditioning induces ischemic tolerance against global cerebral ischemia. Neuroscience 2014; 271:160-9. [PMID: 24797328 DOI: 10.1016/j.neuroscience.2014.04.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 02/05/2014] [Revised: 04/09/2014] [Accepted: 04/24/2014] [Indexed: 02/01/2023]
Abstract
Brain ischemic tolerance is an endogenous protective mechanism activated by a preconditioning stimulus that is closely related to N-methyl-d-aspartate receptor (NMDAR). Glycine transporter type 1 (GlyT-1) inhibitors potentiate NMDAR and suggest an alternative strategy for brain preconditioning. The aim of this work was to evaluate the effects of brain preconditioning induced by sarcosine, a GlyT-1 inhibitor, against global cerebral ischemia and its relation to NMDAR. Sarcosine was administered over 7 days (300 or 500 mg/kg/day, ip) before the induction of a global cerebral ischemia model in Wistar rats (male, 8-week-old). It was observed that sarcosine preconditioning reduced cell death in rat hippocampi submitted to cerebral ischemia. Hippocampal levels of glycine were decreased in sarcosine-treated animals, which was associated with a reduction of [(3)H] glycine uptake and a decrease in glycine transporter expression (GlyT-1 and GlyT-2). The expression of glycine receptors and the NR1 and NR2A subunits of NMDAR were not affected by sarcosine preconditioning. However, sarcosine preconditioning reduced the expression of the NR2B subunits of NMDAR. In conclusion, these data demonstrate that sarcosine preconditioning induces ischemic tolerance against global cerebral ischemia and this neuroprotective state is associated with changes in glycine transport and reduction of NR2B-containing NMDAR expression.
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Affiliation(s)
- M C X Pinto
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena 190, 30130-100 Belo Horizonte, MG, Brazil; Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, 30130-100 Belo Horizonte, MG, Brazil.
| | - F Simão
- Laboratório de Neurociências, Instituto de Pesquisas Biomédicas, Pontifícia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga 6690, 90610-000 Porto Alegre, RS, Brazil
| | - F L P da Costa
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena 190, 30130-100 Belo Horizonte, MG, Brazil; Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, 30130-100 Belo Horizonte, MG, Brazil
| | - D V Rosa
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena 190, 30130-100 Belo Horizonte, MG, Brazil
| | - M J N de Paiva
- Departamento de Bioquímica e Imunologia, Instituto de Ciência Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - R R Resende
- Departamento de Bioquímica e Imunologia, Instituto de Ciência Biológicas, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - M A Romano-Silva
- INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena 190, 30130-100 Belo Horizonte, MG, Brazil
| | - M V Gomez
- Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, R. Domingos Vieira, 590, Belo Horizonte, MG, Brazil
| | - R S Gomez
- Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, 30130-100 Belo Horizonte, MG, Brazil.
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32
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Alvim-Soares AM, Miranda DM, Campos SB, Figueira P, Correa H, Romano-Silva MA. HMNC1 gene polymorphism associated with postpartum depression. Rev Bras Psiquiatr 2014; 36:96-7. [PMID: 24604465 DOI: 10.1590/1516-4446-2013-3507] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 04/17/2013] [Indexed: 12/29/2022]
Affiliation(s)
- Antonio M Alvim-Soares
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Débora M Miranda
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Simone B Campos
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Patricia Figueira
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Humberto Correa
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Marco A Romano-Silva
- National Science and Technology Institute for Molecular Medicine, Universidade Federal de Minas Gerais, Belo HorizonteMG, Brazil, National Science and Technology Institute for Molecular Medicine (INCT-MM), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
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33
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Suarez-Kurtz G, Vargens DD, Santoro AB, Hutz MH, de Moraes ME, Pena SDJ, Ribeiro-dos-Santos Â, Romano-Silva MA, Struchiner CJ. Global pharmacogenomics: distribution of CYP3A5 polymorphisms and phenotypes in the Brazilian population. PLoS One 2014; 9:e83472. [PMID: 24427273 PMCID: PMC3888384 DOI: 10.1371/journal.pone.0083472] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 11/04/2013] [Indexed: 11/19/2022] Open
Abstract
The influence of self-reported "race/color", geographical origin and genetic ancestry on the distribution of three functional CYP3A5 polymorphisms, their imputed haplotypes and inferred phenotypes was examined in 909 healthy, adult Brazilians, self-identified as White, Brown or Black ("race/color" categories of the Brazilian census). The cohort was genotyped for CYP3A5*3 (rs776746), CYP3A5*6 (rs10264272) and CYP3A5*7 (rs41303343), CYP3A5 haplotypes were imputed and CYP3A5 metabolizer phenotypes were inferred according to the number of defective CYP3A5 alleles. Estimates of the individual proportions of Amerindian, African and European ancestry were available for the entire cohort. Multinomial log-linear regression models were applied to infer the statistical association between the distribution of CYP3A5 alleles, haplotypes and phenotypes (response variables), and self-reported Color, geographical region and ancestry (explanatory variables). We found that Color per se or in combination with geographical region associates significantly with the distribution of CYP3A5 variant alleles and CYP3A5 metabolizer phenotypes, whereas geographical region per se influences the frequency distribution of CYP3A5 variant alleles. The odds of having the default CYP3A5*3 allele and the poor metabolizer phenotype increases continuously with the increase of European ancestry and decrease of African ancestry. The opposite trend is observed in relation to CYP3A5*6, CYP3A5*7, the default CYP3A5*1 allele, and both the extensive and intermediate phenotypes. No significant effect of Amerindian ancestry on the distribution of CYP3A5 alleles or phenotypes was observed. In conclusion, this study strongly supports the notion that the intrinsic heterogeneity of the Brazilian population must be acknowledged in the design and interpretation of pharmacogenomic studies, and dealt with as a continuous variable, rather than proportioned in arbitrary categories that do not capture the diversity of the population. The relevance of this work extrapolates the Brazilian borders, and extends to other admixed peoples of the Americas, with ancestral roots in Europe, Africa and the American continent.
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Affiliation(s)
| | - Daniela D. Vargens
- Programa de Farmacologia, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Ana Beatriz Santoro
- Programa de Farmacologia, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Mara H. Hutz
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Sérgio D. J. Pena
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Marco A. Romano-Silva
- Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Santos RR, Torres KC, Lima GS, Fiamoncini CM, Mapa FC, Pereira PA, Rezende VB, Martins LC, Bicalho MA, Moraes EN, Reis HJ, Teixeira AL, Romano-Silva MA. Reduced frequency of T lymphocytes expressing CTLA-4 in frontotemporal dementia compared to Alzheimer's disease. Prog Neuropsychopharmacol Biol Psychiatry 2014; 48:1-5. [PMID: 23891730 DOI: 10.1016/j.pnpbp.2013.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 01/07/2023]
Abstract
Studies suggest that inflammation is involved in the neurodegenerative cascade of dementias. Immunological mechanisms may be part of the pathophysiological process in frontotemporal dementia (FTD), but up till now only vague evidence of such mechanisms has been presented. The B7- CD28/CTLA-4 pathway is an important immunological signaling pathway involved in modulation of T cell activation. The aim of this study was to compare the expression of molecules associated with co-stimulatory signaling in peripheral blood mononuclear cells (PBMC) of FTD to Alzheimer disease (AD) and control groups. Our results confirm the previous demonstrated increased expression of CD80 in CD14+ Alzheimer patients T cells but show, for the first time, a reduction in the expression of CTLA-4 in CD4+ FTD cells. As CTLA-4 is the most potent negative regulators of T-cell activation we speculated that peripheral T lymphocytes in FTD are more activated and this could be involved in the neurodegeneration observed in this dementia.
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Affiliation(s)
- Rodrigo Ribeiro Santos
- Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Avenida Alfredo Balena, 190, Belo Horizonte, MG, CEP 30130-100, Brazil.
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35
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Alvim-Soares A, Miranda D, Campos SB, Figueira P, Romano-Silva MA, Correa H. Postpartum depression symptoms associated with Val158Met COMT polymorphism. Arch Womens Ment Health 2013; 16:339-40. [PMID: 23636476 DOI: 10.1007/s00737-013-0349-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 03/27/2013] [Indexed: 01/18/2023]
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Torres KCL, Santos RR, de Lima GSF, Ferreira ROS, Mapa FC, Pereira PA, Rezende VB, Martins LCA, Bicalho MAC, Moraes EN, Reis HJ, Teixeira AL, Romano-Silva MA. Decreased expression of CCL3 in monocytes and CCR5 in lymphocytes from frontotemporal dementia as compared with Alzheimer's disease patients. J Neuropsychiatry Clin Neurosci 2013; 24:E11-2. [PMID: 23037660 DOI: 10.1176/appi.neuropsych.11060143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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37
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Sortica VDA, Ojopi EB, Genro JP, Callegari-Jacques S, Ribeiro-dos-Santos Â, de Moraes MO, Romano-Silva MA, Pena SDJ, Suarez-Kurtz G, Hutz MH. Influence of Genomic Ancestry on the Distribution of SLCO1B1, SLCO1B3 and ABCB1 Gene Polymorphisms among Brazilians. Basic Clin Pharmacol Toxicol 2011; 110:460-8. [DOI: 10.1111/j.1742-7843.2011.00838.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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38
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Magno LAV, Santana CVN, Sacramento EK, Rezende VB, Cardoso MV, Maurício-da-Silva L, Neves FS, Miranda DM, De Marco LA, Correa H, Romano-Silva MA. Genetic variations in FOXO3A are associated with Bipolar Disorder without confering vulnerability for suicidal behavior. J Affect Disord 2011; 133:633-7. [PMID: 21621268 DOI: 10.1016/j.jad.2011.04.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 03/29/2011] [Accepted: 04/21/2011] [Indexed: 12/11/2022]
Abstract
BACKGROUND Genetic variation plays an important role in Bipolar Disorder (BD) and suicide susceptibility. However, little is known about the genetic influence on the risk of suicide, particularly in BD patients. Since FOXO3A plays a role in distinct mood-relevant behavioral processes, this gene could be a novel gene candidate for BD. Thus, we investigated whether FOXO3A polymorphisms are associated with BD and suicidal behavior in BD patients. METHODS TaqMan genotyping was used to detect FOXO3A SNPs in 273 BD patients and 264 control subjects. RESULTS Three SNPs (rs1536057, rs2802292 and rs1935952) were associated with BD, but none was positively linked with suicidal behavior. LIMITATION A systematic evaluation within the whole FOXO3A gene and drug treatment in patients was not performed. CONCLUSIONS These data suggest that FOXO3A is a novel susceptibility locus for BD, but not for suicidal behavior in BD patients. These results may contribute to a better understanding of the BD genetics.
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Affiliation(s)
- Luiz Alexandre V Magno
- Laboratório de Neurociência, INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Brazil
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Souza RP, Rosa DVF, Romano-Silva MA, Zhen M, Meltzer HY, Lieberman JA, Remington G, Kennedy JL, Wong AHC. Lack of association of NALCN genetic variants with schizophrenia. Psychiatry Res 2011; 185:450-2. [PMID: 20674038 DOI: 10.1016/j.psychres.2010.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 06/03/2010] [Accepted: 07/08/2010] [Indexed: 11/30/2022]
Abstract
NALCN (sodium leak channel, non-selective) is located on chromosome 13q (suggested linkage region for schizophrenia). We analyzed 21 polymorphisms in 464 schizophrenia subjects, 220 controls subjects and 119 small nuclear families. We observed nominal association with rs9518320 and rs9518331, suggesting that NALCN is not related to schizophrenia risk.
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Affiliation(s)
- Renan P Souza
- Neurogenetics Section, Centre for Addiction and Mental Health, Toronto, ON, Canada.
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40
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Pena SDJ, Di Pietro G, Fuchshuber-Moraes M, Genro JP, Hutz MH, Kehdy FDSG, Kohlrausch F, Magno LAV, Montenegro RC, Moraes MO, de Moraes MEA, de Moraes MR, Ojopi EB, Perini JA, Racciopi C, Ribeiro-Dos-Santos AKC, Rios-Santos F, Romano-Silva MA, Sortica VA, Suarez-Kurtz G. The genomic ancestry of individuals from different geographical regions of Brazil is more uniform than expected. PLoS One 2011; 6:e17063. [PMID: 21359226 PMCID: PMC3040205 DOI: 10.1371/journal.pone.0017063] [Citation(s) in RCA: 409] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Accepted: 01/18/2011] [Indexed: 11/19/2022] Open
Abstract
Based on pre-DNA racial/color methodology, clinical and pharmacological trials have traditionally considered the different geographical regions of Brazil as being very heterogeneous. We wished to ascertain how such diversity of regional color categories correlated with ancestry. Using a panel of 40 validated ancestry-informative insertion-deletion DNA polymorphisms we estimated individually the European, African and Amerindian ancestry components of 934 self-categorized White, Brown or Black Brazilians from the four most populous regions of the Country. We unraveled great ancestral diversity between and within the different regions. Especially, color categories in the northern part of Brazil diverged significantly in their ancestry proportions from their counterparts in the southern part of the Country, indicating that diverse regional semantics were being used in the self-classification as White, Brown or Black. To circumvent these regional subjective differences in color perception, we estimated the general ancestry proportions of each of the four regions in a form independent of color considerations. For that, we multiplied the proportions of a given ancestry in a given color category by the official census information about the proportion of that color category in the specific region, to arrive at a "total ancestry" estimate. Once such a calculation was performed, there emerged a much higher level of uniformity than previously expected. In all regions studied, the European ancestry was predominant, with proportions ranging from 60.6% in the Northeast to 77.7% in the South. We propose that the immigration of six million Europeans to Brazil in the 19th and 20th centuries--a phenomenon described and intended as the "whitening of Brazil"--is in large part responsible for dissipating previous ancestry dissimilarities that reflected region-specific population histories. These findings, of both clinical and sociological importance for Brazil, should also be relevant to other countries with ancestrally admixed populations.
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Affiliation(s)
- Sérgio D J Pena
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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41
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Souza BR, Torres KCL, Miranda DM, Motta BS, Caetano FS, Rosa DVF, Souza RP, Giovani A, Carneiro DS, Guimarães MM, Martins-Silva C, Reis HJ, Gomez MV, Jeromin A, Romano-Silva MA. Downregulation of the cAMP/PKA pathway in PC12 cells overexpressing NCS-1. Cell Mol Neurobiol 2010; 31:135-43. [PMID: 20838877 DOI: 10.1007/s10571-010-9562-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2010] [Accepted: 08/28/2010] [Indexed: 10/19/2022]
Abstract
It is well known that dopamine imbalances are associated with many psychiatric disorders and that the dopaminergic receptor D₂ is the main target of antipsychotics. Recently it was shown that levels of two proteins implicated in dopaminergic signaling, Neuronal calcium sensor-1 (NCS-1) and DARPP-32, are altered in the prefrontal cortex (PFC) of both schizophrenic and bipolar disorder patients. NCS-1, which inhibits D₂ internalization, is upregulated in the PFC of both patients. DARPP-32, which is a downstream effector of dopamine signaling, integrates the pathways of several neurotransmitters and is downregulated in the PFC of both patients. Here, we used PC12 cells stably overexpressing NCS-1 (PC12-NCS-1 cells) to address the function of this protein in DARPP-32 signaling pathway in vitro. PC12-NCS-1 cells displayed downregulation of the cAMP/PKA pathway, with decreased levels of cAMP and phosphorylation of CREB at Ser133. We also observed decreased levels of total and phosphorylated DARPP-32 at Thr34. However, these cells did not show alterations in the levels of D₂ and phosphorylation of DARPP-32 at Thr75. These results indicate that NCS-1 modulates PKA/cAMP signaling pathway. Identification of the cellular mechanisms linking NCS-1 and DARPP-32 may help in the understanding the signaling machinery with potential to be turned into targets for the treatment of schizophrenia and other debilitating psychiatric disorders.
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Affiliation(s)
- Bruno R Souza
- Departamento de Saúde Mental, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Suarez-Kurtz G, Amorim A, Damasceno A, Hutz MH, Moraes MOD, Ojopi ÉB, Pena SDJ, Perini JA, Prata MJ, Ribeiro-dos-Santos Â, Romano-Silva MA, Teixeira D, Struchiner CJ. VKORC1 polymorphisms in Brazilians: comparison with the Portuguese and Portuguese-speaking Africans and pharmacogenetic implications. Pharmacogenomics 2010; 11:1257-67. [DOI: 10.2217/pgs.10.89] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aims: The heterogeneity of the Brazilian population renders the extrapolation of pharmacogenomic data derived from well-defined ethnic groups inappropriate. We investigated the influence of self-reported ‘race/color’, geographical origin and genetic ancestry on the distribution of four VKORC1 SNPs and haplotypes in Brazilians. Comparative data were obtained from two major ancestral roots of Brazilians: Portuguese and Africans from former Portuguese colonies. Materials & methods: A total of 1037 healthy adults Brazilians, recruited at four different geographical regions and self identified as white, brown or black (race/color categories), 89 Portuguese and 216 Africans from Angola and Mozambique were genotyped for the VKORC1 3673G>A (rs9923231), 5808T>G (rs2884737), 6853G>C (rs8050894) and 9041G>A (rs7294) polymorphisms using TaqMan® (Applied Biosystems, CA, USA) assays. VKORC1 haplotypes were statistically inferred using the haplo.stats software. We inferred the statistical association between the distribution of the VKORC1 polymorphisms among Brazilians and self-reported color, geographical region and genetic ancestry by fitting multinomial log linear models via neural networks. Individual proportions of European and African ancestry were used to assess the impact of genetic admixture on the frequency distribution of VKORC1 polymorphisms among Brazilians, and for the comparison of Brazilians with Portuguese and Africans. Results: The frequency distribution of the 3673G>A and 5808T>G polymorphisms, and VKORC1 haplotypes among Brazilians varies across geographical regions, within self-reported color categories and according to the individual proportions of European and African genetic ancestry. Notably, the frequency of the warfarin sensitive VKORC1 3673A allele and the distribution of VKORC1 haplotypes varied continuously as the individual proportion of European ancestry increased in the entire cohort, independently of race/color categorization and geographical origin. Brazilians with more than 80% African ancestry differ significantly from Angolans and Mozambicans in frequency of the 3673G>A, 5808T>G and 6853G>C polymorphisms and haplotype distribution, whereas no such differences are observed between Brazilians with more than 90% European ancestry and Portuguese individuals. Conclusion: The diversity of the Brazilian population, evident in the distribution of VKORC1 polymorphisms, must be taken into account in the design of pharmacogenetic clinical trials and dealt with as a continuous variable. Warfarin dosing algorithms that include ‘race’ terms defined for other populations are clearly not applicable to the heterogeneous and extensively admixed Brazilian population.
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Affiliation(s)
| | - António Amorim
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal and Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Albertino Damasceno
- Serviço de Cardiologia, Faculdade de Medicina, Universidade Eduardo Mondlane, Maputo, Mozambique
| | - Mara H Hutz
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Manuel Odorico de Moraes
- Unidade de Farmacologia Clínica, Departamento de Fisiologia e Farmacologia, Faculdade de Medicina da Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Élida B Ojopi
- Laboratório de Neurociências (LIM-27), Instituto de Psiquiatria, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Sérgio DJ Pena
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil and GENE – Núcleo de Genética Médica, Belo Horizonte, MG, Brazil
| | - Jamila A Perini
- Divisão de Farmacologia, Instituto Nacional do Câncer, Rio de Janeiro, RJ, Brazil
| | - Maria João Prata
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal and Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | | | - Marco A Romano-Silva
- Instituto Nacional de Ciência e Tecnologia de Medicina Molecular, Laboratório de Neurociência, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniel Teixeira
- Institute of Molecular Pathology & Immunology of the University of Porto (IPATIMUP), Porto, Portugal and Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
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Souza RP, Romano-Silva MA, Lieberman JA, Meltzer HY, MacNeil LT, Culotti JG, Kennedy JL, Wong AHC. Genetic association of the GDNF alpha-receptor genes with schizophrenia and clozapine response. J Psychiatr Res 2010; 44:700-6. [PMID: 20116071 DOI: 10.1016/j.jpsychires.2010.01.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 12/30/2009] [Accepted: 01/06/2010] [Indexed: 01/30/2023]
Abstract
GDNF (glial-cell-line derived neurotrophic factor) is a potent neurotrophic factor for dopaminergic neurons. Neuropsychiatric diseases and their treatments are associated with alterations in the levels of both GDNF and its receptor family (GDNF family receptor alpha or GFRA). GFRA1, GFRA2 and GFRA3 are located in chromosomal regions with suggestive linkage to schizophrenia. In this study we analyzed polymorphisms located in all four known GFRA genes and examined association with schizophrenia and clozapine response. We examined SNPs across the genes GFRA1-4 in 219 matched case-control subjects, 85 small nuclear families and 140 schizophrenia patients taking clozapine for 6months. We observed that GFRA3 rs11242417 and GFRA1 rs11197557 variants were significantly associated with schizophrenia after combining results from both schizophrenia samples. Furthermore, we found an overtransmission of the G-C GFRA1 rs7920934-rs730357 haplotype to subjects with schizophrenia and association of A-T-G-G GFRA3 rs10036665-rs10952-rs11242417-rs7726580 with schizophrenia in the case-control sample. On the other hand, GFRA2 variants were not associated with schizophrenia diagnosis but subjects carrying T-G-G rs1128397-rs13250096-rs4567028 haplotype were more likely to respond to clozapine treatment. The statistical significance of results survived permutation testing but not Bonferroni correction. We also found nominally-significant evidence for interactions between GFRA1, 2 and 3 associated with schizophrenia and clozapine response, consistent with the locations of these three genes within linkage regions for schizophrenia.
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Affiliation(s)
- Renan P Souza
- Laboratorio de Neurociencia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Rosa DV, Souza RP, Souza BR, Lima FF, Valvassori SS, Gomez MV, Quevedo J, Romano-Silva MA. Inhibitory avoidance task does not change NCS-1 level in rat brain. Brain Res Bull 2010; 82:289-92. [DOI: 10.1016/j.brainresbull.2010.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 04/27/2010] [Accepted: 04/27/2010] [Indexed: 10/19/2022]
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Souza BR, Torres KCL, Miranda DM, Motta BS, Scotti-Muzzi E, Guimarães MM, Carneiro DS, Rosa DVF, Souza RP, Reis HJ, Jeromin A, Romano-Silva MA. Lack of effects of typical and atypical antipsychotics in DARPP-32 and NCS-1 levels in PC12 cells overexpressing NCS-1. J Negat Results Biomed 2010; 9:4. [PMID: 20565907 PMCID: PMC2912242 DOI: 10.1186/1477-5751-9-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [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: 10/01/2009] [Accepted: 06/19/2010] [Indexed: 11/29/2022] Open
Abstract
Background Schizophrenia is the major psychiatry disorder, which the exact cause remains unknown. However, it is well known that dopamine-mediated neurotransmission imbalance is associated with this pathology and the main target of antipsychotics is the dopamine receptor D2. Recently, it was described alteration in levels of two dopamine signaling related proteins in schizophrenic prefrontal cortex (PFC): Neuronal Calcium Sensor-1 (NCS-1) and DARPP-32. NCS-1, which is upregulated in PFC of schizophrenics, inhibits D2 internalization. DARPP-32, which is decreased in PFC of schizophrenics, is a key downstream effector in transducing dopamine signaling. We previously demonstrated that antipsychotics do not change levels of both proteins in rat's brain. However, since NCS-1 and DARPP-32 levels are not altered in wild type rats, we treated wild type PC12 cells (PC12 WT) and PC12 cells stably overexpressing NCS-1 (PC12 Clone) with antipsychotics to investigate if NCS-1 upregulation modulates DARPP-32 expression in response to antipsychotics treatment. Results We chronically treated both PC12 WT and PC12 Clone cells with typical (Haloperidol) or atypical (Clozapine and Risperidone) antipsychotics for 14 days. Using western blot technique we observed that there is no change in NCS-1 and DARPP-32 protein levels in both PC12 WT and PC12 Clone cells after typical and atypical antipsychotic treatments. Conclusions Because we observed no alteration in NCS-1 and DARPP-32 levels in both PC12 WT and Clone cells treated with typical or atypical antipsychotics, we suggest that the alteration in levels of both proteins in schizophrenic's PFC is related to psychopathology but not with antipsychotic treatment.
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Affiliation(s)
- Bruno R Souza
- Laboratório de Neurociências, Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av Alfredo Balena 190, Belo Horizonte, MG, Brazil
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Souza RP, Tampakeras M, Basile V, Shinkai T, Rosa DVF, Potkin S, Meltzer HY, Lieberman JA, Romano-Silva MA, Kennedy JL. Lack of association of GPX1 and MnSOD genes with symptom severity and response to clozapine treatment in schizophrenia subjects. Hum Psychopharmacol 2009; 24:676-9. [PMID: 19946932 DOI: 10.1002/hup.1076] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Abnormal activities of critical antioxidant enzymes and other indices of lipid peroxidation in plasma and red blood cells were detected in patients with schizophrenia. Other results have shown that oxidative stress may be modulated by clozapine. Based on that and some studies already found different clinical relations between reactive oxygen species and negative and positive symptoms, we evaluated association between clinical response and the polymorphism in the human glutathione peroxidase (GPX1) (Pro200Leu, rs1050450) and manganese SOD (MNSOD) (Ala16Val, rs4880) gene in 216 clozapine-treated patients with schizophrenia. No association was found with these two functional polymorphisms and clozapine response and symptom change after 6 months. No correlations were found between positive/negative symptoms score and both polymorphisms. Our results present that GPX1 (Pro200Leu) and MNSOD (Ala16Val) polymorphisms seem do not play a central role in the clozapine response, although studies in larger and independent samples are necessary to confirm our findings.
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Affiliation(s)
- Renan P Souza
- Neurogenetics Section, CAMH and Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
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Pinheiro ACDN, da Silva AJ, Prado MAM, Cordeiro MDN, Richardson M, Batista MC, de Castro Junior CJ, Massensini AR, Guatimosim C, Romano-Silva MA, Kushmerick C, Gomez MV. Phoneutria spider toxins block ischemia-induced glutamate release, neuronal death, and loss of neurotransmission in hippocampus. Hippocampus 2009; 19:1123-9. [DOI: 10.1002/hipo.20580] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Boeck CR, Marques VB, Valvassori SS, Constantino LC, Rosa DV, Lima FF, Romano-Silva MA, Quevedo J. Early long-term exposure with caffeine induces cross-sensitization to methylphenidate with involvement of DARPP-32 in adulthood of rats. Neurochem Int 2009; 55:318-22. [DOI: 10.1016/j.neuint.2009.03.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Revised: 02/18/2009] [Accepted: 03/25/2009] [Indexed: 10/20/2022]
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Guimarães MM, Reis HJ, Guimarães LP, Carneiro DS, Ribeiro FM, Gomez MV, Jeromin A, Romano-Silva MA. Modulation of muscarinic signaling in PC12 cells overexpressing neuronal Ca2+ sensor-1 protein. Cell Mol Biol (Noisy-le-grand) 2009; 55 Suppl:OL1138-OL1150. [PMID: 19656467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2009] [Accepted: 06/20/2009] [Indexed: 05/28/2023]
Abstract
It has been suggested that overexpression of neuronal Ca2+ sensor-1 (NCS-1) protein is implicated in the pathophysiology of neurodisorders such as schizophrenia, bipolar disturbance and X-linked mental retardation. The mechanism by which NCS-1 would be involved in the causes and/or consequences of these neurodisorders is still far from elucidation. Independent evidence has pointed NCS-1 as a key regulator of synaptic efficacy by altering the expression and activity of voltage-gated channels, inhibiting internalization of dopaminergic receptors, and altering phosphoinositide metabolism. In this study, we examined the possible participation of NCS-1 protein in signal transmission dependent on muscarinic receptor activation, using PC12 cells stably expressing NCS-1 (PC12-NCS-1). Carbachol (CCH; 300 microM) was able to evoke glutamate release more efficiently from PC12-NCS-1 (15.3+/-1.0nmol/mg of protein) than wild type cells (PC12-wt; 8.3+/-0.9nmol/mg of protein). This increase of glutamate release induced by CCH was independent on extracellular Ca2+ influx. Additionally, a larger increase of cytoplasmic levels of InsP3 (663.0+/-63.0 and 310.0+/-39.0% of fluorescence in A.U.) and [Ca2+]i (766.4+/-40.0 and 687.8+/-37.1nmol/L) was observed after CCH stimulus of PC12-NCS-1 compared with PC12-wt. Clearly distinction between intracellular Ca2+ dynamics was also observed in PC12-NCS-1 and PC12-wt. A larger increase followed by fast decay of [Ca2+]i was observed in PC12-NCS-1. A plateau with a delayed decay of [Ca2+]i was characteristic of PC12-wt [Ca2+]i response. Both enhancement of InsP3 production and glutamate release observed in PC12-NCS-1 were blocked by atropine (10 microM). Together, our data show that overexpression of NCS-1 in PC12 cells induces an enhancement of intracellular second messenger and transmitter release dependent on CCH response, suggesting that muscarinic signaling is "up-regulated" in this cell model.
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Affiliation(s)
- M M Guimarães
- Faculdade de Medicina da UFMGAv Alfredo Balena Laboratorio de Neurociência, Departamento de Saude Mental, INCT de Medicina Molecular Brazil
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50
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Torres KCL, Souza BR, Miranda DM, Nicolato R, Neves FS, Barros AGA, Dutra WO, Gollob KJ, Correa H, Romano-Silva MA. The leukocytes expressing DARPP-32 are reduced in patients with schizophrenia and bipolar disorder. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:214-9. [PMID: 19059449 DOI: 10.1016/j.pnpbp.2008.10.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Revised: 10/06/2008] [Accepted: 10/22/2008] [Indexed: 01/13/2023]
Abstract
Bipolar disorder (BPD) and schizophrenia (SCZ) are severe disorders representing an enormous social, familiar and individual burden, being SCZ the most disabling psychiatric disorder characterized by psychosis and cognitive impairment. It is well known that SCZ and BPD are associated with abnormalities in dopamine signaling pathway. Recent data in the literature have demonstrated altered expression levels of some proteins involved in the modulation of this pathway in both brain and peripheral tissues. It was shown that protein and mRNA levels of dopamine and cAMP regulated phosphoprotein (DARPP-32) were downregulated in dorsolateral prefrontal cortex (DLPFC) of patients with SCZ or BPD when compared to controls. Due to the difficulty to access brain tissue and the absence of objective laboratory tests for bio-markers, we measured DARPP-32 expression in blood cell sub-populations (CD4+ T lymphocytes, CD56+ NK cells, CD19+ B lymphocytes and CD14+ monocytes) taking advantage of the close relation of nervous and immune systems. Using flow cytometry as the analytical method, our results have shown that the DARPP-32 expression was diminished in CD4+ T lymphocytes, CD19+ B lymphocytes and CD14+ monocytes of BPD patients and was also decreased in CD4+ T lymphocytes and CD56+ NK cells of SCZ patients. These results showed that DARPP-32 expression in immune cells agrees with reports of reduced DARPP-32 protein in the DLPFC of BPD or SCZ patients. Our data suggest that DARPP-32 expression in PBMC could be used as a source of bio-markers to help in the treatment response of neuropsychiatry disorders as a window to the changes in the brain of those patients.
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Affiliation(s)
- K C L Torres
- Laboratório de Neurociência, Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av Alfredo Balena, 190; Belo Horizonte-MG, Brazil
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