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Pascoal VDB, Marchesini RB, Athié MCP, Matos AHB, Conte FF, Pereira TC, Secolin R, Gilioli R, Malheiros JM, Polli RS, Tannús A, Covolan L, Pascoal LB, Vieira AS, Cavalheiro EA, Cendes F, Lopes-Cendes I. Modulating Expression of Endogenous Interleukin 1 Beta in the Acute Phase of the Pilocarpine Model of Epilepsy May Change Animal Survival. Cell Mol Neurobiol 2023; 43:367-380. [PMID: 35061107 DOI: 10.1007/s10571-022-01190-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 01/05/2022] [Indexed: 01/07/2023]
Abstract
The pilocarpine-induced (PILO) model has helped elucidate the electrophysiological and molecular aspects related to mesial temporal lobe epilepsy. It has been suggested that the extensive cell death and edema observed in the brains of these animals could be induced by increased inflammatory responses, such as the rapid release of the inflammatory cytokine interleukin 1 beta (Il1b). In this study, we investigate the role of endogenous Il1b in the acute phase of the PILO model. Our aim is twofold. First, we want to determine whether it is feasible to silence Il1b in the central nervous system using a non-invasive procedure. Second, we aim to investigate the effect of silencing endogenous Il1b and its antagonist, Il1rn.We used RNA interference applied non-invasively to knockdown Il1b and its endogenous antagonist Il1rn. We found that knocking down Il1b prior to pilocarpine injection increased the mortality rate of treated animals. Furthermore, we observed that, when exposing the animals to more Il1b by silencing its endogenous antagonist Il1rn, there was a better response to status epilepticus with decreased animal mortality in the acute phase of the PILO model. Thus, we show the feasibility of using a novel, less invasive approach to study genes involved in the inflammatory response in the central nervous system. Furthermore, our results provide suggestive evidence that modulating endogenous Il1b improves animal survival in the acute phase of the PILO model and may have effects that extend into the chronic phase.
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Affiliation(s)
- V D B Pascoal
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil.,Department of Basic Science, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - R B Marchesini
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil
| | - M C P Athié
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil
| | - A H B Matos
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil
| | - F F Conte
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil
| | - T C Pereira
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil.,Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, SP, Brazil
| | - R Secolin
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil.,Department of Basic Science, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - R Gilioli
- Multidisciplinary Centre for Biological Investigation (CEMIB), University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - J M Malheiros
- Centro de Imagens e Espectroscopia por Ressonancia Magnetica (CIERMag), Institute of Physics, University of Sao Paulo (USP), Sao Carlos, SP, Brazil.,Department of Physiology, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - R S Polli
- Institute of Science and Technology, Federal University of São Paulo, São José dos Campos, SP, Brazil
| | - A Tannús
- Centro de Imagens e Espectroscopia por Ressonancia Magnetica (CIERMag), Institute of Physics, University of Sao Paulo (USP), Sao Carlos, SP, Brazil
| | - L Covolan
- Department of Physiology, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - L B Pascoal
- Laboratory of Cell Signaling, School of Medical Sciences, University of Campinas - (UNICAMP), Campinas, SP, Brazil
| | - A S Vieira
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas - (UNICAMP), Campinas, SP, Brazil
| | - E A Cavalheiro
- Department of Neurology and Neurosurgery, Federal University of Sao Paulo, (UNIFESP), Sao Paulo, SP, Brazil
| | - F Cendes
- Department of Neurology, School of Medical Sciences, University of Campinas - (UNICAMP); and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, SP, Brazil
| | - I Lopes-Cendes
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), and the Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Tessália Vieira de Camargo, 126, Cidade Universitária "Zeferino Vaz", Campinas, SP, 13083-887, Brazil.
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Novi SL, Carvalho AC, Forti RM, Cendes F, Yasuda CL, Mesquita RC. Revealing the spatiotemporal requirements for accurate subject identification with resting-state functional connectivity: a simultaneous fNIRS-fMRI study. Neurophotonics 2023; 10:013510. [PMID: 36756003 PMCID: PMC9896013 DOI: 10.1117/1.nph.10.1.013510] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
SIGNIFICANCE Brain fingerprinting refers to identifying participants based on their functional patterns. Despite its success with functional magnetic resonance imaging (fMRI), brain fingerprinting with functional near-infrared spectroscopy (fNIRS) still lacks adequate validation. AIM We investigated how fNIRS-specific acquisition features (limited spatial information and nonneural contributions) influence resting-state functional connectivity (rsFC) patterns at the intra-subject level and, therefore, brain fingerprinting. APPROACH We performed multiple simultaneous fNIRS and fMRI measurements in 29 healthy participants at rest. Data were preprocessed following the best practices, including the removal of motion artifacts and global physiology. The rsFC maps were extracted with the Pearson correlation coefficient. Brain fingerprinting was tested with pairwise metrics and a simple linear classifier. RESULTS Our results show that average classification accuracy with fNIRS ranges from 75% to 98%, depending on the number of runs and brain regions used for classification. Under the right conditions, brain fingerprinting with fNIRS is close to the 99.9% accuracy found with fMRI. Overall, the classification accuracy is more impacted by the number of runs and the spatial coverage than the choice of the classification algorithm. CONCLUSIONS This work provides evidence that brain fingerprinting with fNIRS is robust and reliable for extracting unique individual features at the intra-subject level once relevant spatiotemporal constraints are correctly employed.
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Affiliation(s)
- Sergio L. Novi
- University of Campinas, “Gleb Wataghin” Institute of Physics, Campinas, Brazil
- Western University, Department of Physiology and Pharmacology, London, Ontario, Canada
| | - Alex C. Carvalho
- University of Campinas, “Gleb Wataghin” Institute of Physics, Campinas, Brazil
- University of Campinas, Laboratory of Neuroimaging, Campinas, Brazil
| | - R. M. Forti
- University of Campinas, “Gleb Wataghin” Institute of Physics, Campinas, Brazil
- The Children’s Hospital of Philadelphia, Division of Neurology, Philadelphia, Pennsylvania, United States
| | - Fernado Cendes
- Brazilian Institute of Neuroscience and Neurotechnology, Campinas, Brazil
- University of Campinas, School of Medical Sciences, Department of Neurology, Campinas, Brazil
| | - Clarissa L. Yasuda
- University of Campinas, Laboratory of Neuroimaging, Campinas, Brazil
- Brazilian Institute of Neuroscience and Neurotechnology, Campinas, Brazil
- University of Campinas, School of Medical Sciences, Department of Neurology, Campinas, Brazil
| | - Rickson C. Mesquita
- University of Campinas, “Gleb Wataghin” Institute of Physics, Campinas, Brazil
- Brazilian Institute of Neuroscience and Neurotechnology, Campinas, Brazil
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Silva PJF, Silva CM, Campos BM, Campos PM, Medina SS, Lamonica A, Cendes F, Costa FF, Saad STO, Benites BD. AVALIAÇÃO COGNITIVA DE PACIENTES ADULTOS COM DOENÇAS FALCIFORMES: O IMPACTO DAS CONDIÇÕES SOCIOECONÔMICAS E CORRELAÇÕES COM ACHADOS DE NEUROIMAGEM. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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de Brito MR, Rezende T, Iwabe C, Conte G, da Graça FF, Nucci A, Cendes F, França M. P.73 Structural damage in dystrophinopathies: a multimodal neuroimaging study. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pereira D, Freschi M, Frittoli R, Londe AC, Amaral T, Dertkigil S, Del Rio AP, Cendes F, Rittner L, Appenzeller S. AB0457 HIPPOCAMPAL SUBFIELDS VOLUMES REDUCTION IN PATIENTS WITH SYSTEMIC SCLEROSIS: A LONGITUDINAL MAGNETIC RESONANCE IMAGING (MRI) VOLUMETRIC STUDY. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Systemic sclerosis (SSc) is a multisystem disease characterized by functional and structural abnormalities of small blood vessels, fibrosis of the skin and internal organs. In addition, volume reduction and shape abnormality of the hippocampus have been demonstrated in rheumatic and neurodegenerative diseases. However, the neuroanatomy of the hippocampus is complex and is not a uniform structure, consisting of subfields with distinct morphology: cornu ammonis (CA) subfields CA1–4, dentate gyrus (DG), fimbria, and adjacent subiculum and presubiculum [1].Objectives:To investigate the hippocampal subfields volumes reduction in SSc patients using MRI.Methods:In this study we included 37 SSc patients (33 women, mean age of 53.46, SD ± 12.29; range 30 - 78) and 37 healthy controls (HC) (31 women, mean age of 48.41, SD±12.20; range 29 - 80). Cognitive evaluation was performed using the Montreal Cognitive Assessment (MoCA), mood disorders were determined through Beck’s Depression (BDI) and Beck’s Anxiety Inventories (BAI). SSc patients were further assessed for clinical and laboratory SSc manifestations, disease activity (Valentini Activity Index), severity activity (Medsger Severity Index). MRI protocol consisted of: Sagittal T1-weighted images performed with a Philips 3.0T MRI scanner. MRI brain structure volumetric was done through volBrain [2]. After 48 months MRI acquisition were repeated in 26 SSc patients and 12 healthy volunteers. Statistics was performed according nature of the variable.Results:We observed a significant reduction in hippocampal subfields volumes in SSc patients when compared to controls: Total hippocampi (SSc: mean volume = 4.78 cm3; SD = 0.38; HC: mean volume = 5.01 cm3; SD = 0.38; p = 0.033). Reduction in volume of the total hippocampi was associated with Raynaud’s phenomenon (p = 0.006). A longitudinal study showed a reduction in volume of the hippocampus subfields volumes when compared to patient’s baseline: Total hippocampi (mean initial volume = 4.78 cm3; mean follow-up volume = 4.50 cm3, p = 0.027); Total CA1 (mean initial volume = 1.59 cm3; mean follow-up volume = 1.58 cm3, p < 0.0001); Reduction in volume of the total hippocampi was associated with presence of current use of prednisone (p = 0.008). Reduction in left CA1 left associated with current use of prednisone (p = 0.014). Reduction in total subiculum was associated with presence of calcinosis (p = 0.023). No significant changes were observed in hippocampal subfields volumes in controls over the follow-up period.Conclusion:This study provides evidence of hippocampus subfields volumes reductions in SSc patients when compared to controls and was associated with Raynaud’s phenomenon, current use of losartan and correlated with BAI scores. Also, a longitudinal study showed a reduction in volume of the hippocampus subfields volumes when compared to patient’s baseline associated with calcinosis and current use of prednisone.References:[1]Eichenbaum, Howard. “A cortical–hippocampal system for declarative memory.” Nature Reviews Neuroscience 1.1 (2000): 41-50.[2]Manjon JV, Coupe P (2016) volBrain: an online MRI brain volumetry system. Front Neuroinform 10:30.Disclosure of Interests:None declared.
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Benites B, Silva C, Campos B, Campos P, Medina S, Cendes F, Olalla-Saad S. PROGRESSIVE COGNITIVE DECLINE IN ADULTS WITH SICKLE CELL DISEASE (SCD): THE EFFECTS OF THE SOCIOCULTURAL BACKGROUND AND CEREBRAL ATROPHY. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Guimarães R, Ramalho L, Campos B, Azevedo P, Piovesana L, Cendes F. Tractography of the corticospinal tract in Parkinson's Disease. How does diffusion values vary along tract segments? Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Louis S, Morita-Sherman M, Jones S, Vegh D, Bingaman W, Blumcke I, Obuchowski N, Cendes F, Jehi L. Hippocampal Sclerosis Detection with NeuroQuant Compared with Neuroradiologists. AJNR Am J Neuroradiol 2020; 41:591-597. [PMID: 32217554 DOI: 10.3174/ajnr.a6454] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/17/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND PURPOSE NeuroQuant is an FDA-approved software that performs automated MR imaging quantitative volumetric analysis. This study aimed to compare the accuracy of NeuroQuant analysis with visual MR imaging analysis by neuroradiologists with expertise in epilepsy in identifying hippocampal sclerosis. MATERIALS AND METHODS We reviewed 144 adult patients who underwent presurgical evaluation for temporal lobe epilepsy. The reference standard for hippocampal sclerosis was defined by having hippocampal sclerosis on pathology (n = 61) or not having hippocampal sclerosis on pathology (n = 83). Sensitivities, specificities, positive predictive values, and negative predictive values were compared between NeuroQuant analysis and visual MR imaging analysis by using a McNemar paired test of proportions and the Bayes theorem. RESULTS NeuroQuant analysis had a similar specificity to neuroradiologist visual MR imaging analysis (90.4% versus 91.6%; P = .99) but a lower sensitivity (69.0% versus 93.0%, P < .001). The positive predictive value of NeuroQuant analysis was comparable with visual MR imaging analysis (84.0% versus 89.1%), whereas the negative predictive value was not comparable (79.8% versus 95.0%). CONCLUSIONS Visual MR imaging analysis by a neuroradiologist with expertise in epilepsy had a higher sensitivity than did NeuroQuant analysis, likely due to the inability of NeuroQuant to evaluate changes in hippocampal T2 signal or architecture. Given that there was no significant difference in specificity between NeuroQuant analysis and visual MR imaging analysis, NeuroQuant can be a valuable tool when the results are positive, particularly in centers that lack neuroradiologists with expertise in epilepsy, to help identify and refer candidates for temporal lobe epilepsy resection. In contrast, a negative test could justify a case referral for further evaluation to ensure that false-negatives are detected.
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Affiliation(s)
- S Louis
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
| | - M Morita-Sherman
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
| | - S Jones
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
| | - D Vegh
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
| | - W Bingaman
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
| | - I Blumcke
- Institute of Neuropathology (I.B.), University Hospitals Erlangen, Erlangen, Germany
| | - N Obuchowski
- Quantitative Health Sciences (N.O.), Cleveland Clinic, Cleveland, Ohio
| | - F Cendes
- Department of Neurology (F.C.), University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - L Jehi
- From the Epilepsy Center (S.L., M.M.-S., S.J., D.V., W.B., L.J.), and
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Pimentel-Silva L, Nogueira M, Zanão T, Yasuda C, Cendes F. Temporal lobe epilepsy with depressive symptoms: Influence on neuronal damage measured by proton magnetic resonance spectroscopy. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rezende TJR, Martinez ARM, Faber I, Girotto Takazaki KA, Martins MP, de Lima FD, Lopes-Cendes I, Cendes F, França MC. Developmental and neurodegenerative damage in Friedreich's ataxia. Eur J Neurol 2018; 26:483-489. [PMID: 30326180 DOI: 10.1111/ene.13843] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 06/29/2018] [Accepted: 10/04/2018] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE Friedreich's ataxia (FRDA) is the most common autosomal-recessive ataxia worldwide. It is characterized by early onset, sensory abnormalities and slowly progressive ataxia. All magnetic resonance imaging (MRI)-based studies have focused on the evaluation of adult patients. Therefore, we designed a cross-sectional multimodal MRI-based study to investigate the anatomical substrates involved in the early stages of FRDA. METHODS We enrolled 37 patients (12 children) and 38 controls. All subjects underwent MRI in a 3T device to assess gray and white matter. We used measures from FreeSurfer and CERES to evaluate the cerebral and cerebellar cortices. The T1 multiatlas assessed deep gray matter. The diffusion tensor imaging multiatlas was used to investigate microstructural abnormalities in brain white matter and SpineSeg was used to assess the cervical spinal cord. All analyses were corrected for multiple comparisons. RESULTS Comparison with age-matched controls showed that pediatric patients have spinal cord, inferior cerebellar peduncle and red nucleus damage. In contrast, adult patients showed more widespread white matter damage than pediatric patients. With regard to gray matter, we found cortical thinning at the left central sulcus and volumetric reduction in the thalami and hippocampi only in adult patients. Finally, values of fractional anisotropy in adult patients and radial diffusivity in pediatric patients from the inferior cerebellar peduncle correlated with disease duration and ataxia severity, respectively. CONCLUSIONS Structural damage in FRDA begins in the spinal cord and inferior cerebellar peduncle as well as the red nucleus, and progresses to cerebral areas in adulthood. These results shed some light on the early stages of FRDA and highlight potential neuroimaging markers for therapeutic trials.
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Affiliation(s)
- T J R Rezende
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - A R M Martinez
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - I Faber
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - K A Girotto Takazaki
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - M P Martins
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - F D de Lima
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - I Lopes-Cendes
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - F Cendes
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
| | - M C França
- Department of Neurology and Neuroimaging Laboratory, School of Medical Sciences, University of Campinas (UNICAMP), Campinas
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Facer-Childs E, Campos B, Cendes F, Middleton B, Skene D, Bagshaw A. Functional connectivity differences between early and late circadian phenotypes predict cognitive performance and daytime sleepiness. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Magalhães TNC, Weiler M, Teixeira CVL, Hayata T, Moraes AS, Boldrini VO, dos Santos LM, de Campos BM, de Rezende TJR, Joaquim HPG, Talib LL, Forlenza OV, Cendes F, Balthazar MLF. Systemic Inflammation and Multimodal Biomarkers in Amnestic Mild Cognitive Impairment and Alzheimer’s Disease. Mol Neurobiol 2017; 55:5689-5697. [DOI: 10.1007/s12035-017-0795-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 09/26/2017] [Indexed: 12/01/2022]
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Alvim M, Yasuda C, Morita M, Coan A, Barbosa R, Vieira E, Rocha N, Lopes-Cendes I, Teixeira A, Cendes F. The relationship between blood serum BDNF and seizure frequency in temporal lobe epilepsy patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.948] [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] [Indexed: 11/24/2022]
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Alvim M, Moreira J, Artoni G, Ishikawa A, Garcia D, Campos B, Morita M, Cendes F, Yasuda C. The impact of hippocampal atrophy on brain atrophy: Side matters. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mariano R, Ishikawa A, Zhang C, Lopes T, Zanão T, Campos B, Braga B, Santos D, Mesquita R, Bergo F, Costa A, Cendes F, Yasuda C. Topiramate impairs brain connectivity and language network a functional MRI study in epilepsy and headache. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lapa AT, Pedro T, Francischinelli J, Coan AC, Costallat LTL, Cendes F, Appenzeller S. Abnormality in hippocampal signal intensity predicts atrophy in patients with systemic lupus erythematosus. Lupus 2016; 26:633-639. [DOI: 10.1177/0961203316673151] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objectives To quantify signal abnormalities in the hippocampus (Hsig) of patients with systemic lupus erythematosus (SLE) and to determine if Hsig predict hippocampal atrophy (HA) in SLE. Methods We included all SLE patients and healthy age- and sex-matched individuals with two magnetic resonance imaging (MRI) scans performed with a minimum of 1 year interval. All individuals underwent a standardized neuropsychological evaluation. Individual results were converted into standard scores and compared to normative data. SLE patients were additionally assessed for disease activity (SLE Disease Activity Index (SLEDAI)), damage (Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI)), and the presence of antiphospholipid antibodies. MRI was performed on an Elscint 2 T scanner and T1 inversion recovery and T2 coronal images were used for analysis. Volumetric (HV) and signal quantification (Hsig) were determined by standardized protocols. Results We included 54 SLE patients (48 women; mean age 32.2 ± 10.56 years). Hsig were found at study entry in 15 (45.5%) patients. Hsig in the body and tail of non-atrophic hippocampi correlated with progression of volume loss during the follow-up period ( r = 0.8, p < 0.001). The presence of Hsig in the head of atrophic hippocampi correlated with progression of HA ( r = 0.73, p = 0.005) during the same period. No correlation of Hsig and disease activity or prednisone dose was observed. Conclusion HA is frequently observed in SLE patients and volume loss is progressive in a subgroup of patients. The evaluation of Hsig is an easy tool to determine patients that may have progressive hippocampal volume loss and should be followed more closely with MRI and cognitive evaluation.
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Affiliation(s)
- A T Lapa
- MSc Graduate (Postgraduate) Program in Child and Adolescent Health, Faculty of Medical Science, State University of Campinas, Brazil
| | - T Pedro
- Department of Neurology, Faculty of Medical Science, State University of Campinas, Brazil
| | - J Francischinelli
- Department of Neurology, Faculty of Medical Science, State University of Campinas, Brazil
| | - A C Coan
- Department of Neurology, Faculty of Medical Science, State University of Campinas, Brazil
| | - L T Lavras Costallat
- Department of Medicine, Faculty of Medical Science, State University of Campinas, Brazil
| | - F Cendes
- Department of Neurology, Faculty of Medical Science, State University of Campinas, Brazil
| | - S Appenzeller
- Department of Medicine, Faculty of Medical Science, State University of Campinas, Brazil
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Piccinin C, Campos L, Guimarães R, Piovesana L, Santos M, Azevedo P, Campos B, Rezende T, Amato-Filho A, Cendes F, D’Abreu A. Cerebellar evaluation in Parkinson’s disease: gray matter analysis and its association with disease severity. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Mendonça H, Yassuda C, Beltramini G, Weiler M, França M, Castellano G, Damasceno B, Cendes F, Nucci A. Myotonic dystrophy type 1: Neuropsychological and brain magnetic resonance image study. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Alvim M, Morita M, Yasuda C, Divino N, Martins M, Ghizoni E, Tedeschi H, Cendes F. Controversial bleeding in epilepsy surgery in subjects under valproic acid treatment. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Guimarães R, Dagher A, Piovesana L, Larcher K, Campos L, Azevedo P, Zeighami Y, D'Abreu A, Cendes F. Cortical thinning pattern in Parkinson's disease stages. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Pohlmann-Eden B, Aldenkamp A, Baker GA, Brandt C, Cendes F, Coras R, Crocker CE, Helmstaedter C, Jones-Gotman M, Kanner AM, Mazarati A, Mula M, Smith ML, Omisade A, Tellez-Zenteno J, Hermann BP. The relevance of neuropsychiatric symptoms and cognitive problems in new-onset epilepsy - Current knowledge and understanding. Epilepsy Behav 2015; 51:199-209. [PMID: 26291774 DOI: 10.1016/j.yebeh.2015.07.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [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: 06/24/2015] [Accepted: 07/03/2015] [Indexed: 01/11/2023]
Abstract
Neurobehavioral and cognition problems are highly prevalent in epilepsy, but most research studies to date have not adequately addressed the precise nature of the relationship between these comorbidities and seizures. To address this complex issue and to facilitate collaborative, innovative research in the rising field of neurobehavioral comorbidities and cognition disturbances in new-onset epilepsy, international epilepsy experts met at the 3rd Halifax International Epilepsy Conference & Retreat at White Point, South Shore, Nova Scotia, Canada from September 18 to 20, 2014. This Conference Proceedings provides a summary of the conference proceedings. Specifically, the following topics are discussed: (i) role of comorbidities in epilepsy diagnosis and management, (ii) role of antiepileptic medications in understanding the relationship between epilepsy and neurobehavioral and cognition problems, and (iii) animal data and diagnostic approaches. Evidence to date, though limited, strongly suggests a bidirectional relationship between epilepsy and cognitive and psychiatric comorbidities. In fact, it is likely that seizures and neurobehavioral problems represent different symptoms of a common etiology or network-wide disturbance. As a reflection of this shared network, psychiatric comorbidities and/or cognition problems may actually precede the seizure occurrence and likely get often missed if not screened.
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Affiliation(s)
- B Pohlmann-Eden
- Division of Neurology, Dalhousie University of Halifax, Canada; Brain Repair Center, Dalhousie University of Halifax, Canada.
| | - A Aldenkamp
- Epilepsiecentrum Kempenhaeghe, The Netherlands
| | - G A Baker
- Division of Neurosciences, University of Liverpool, United Kingdom
| | - C Brandt
- Bethel Epilepsy Center, Mara Hospital, Bielefeld, Germany
| | - F Cendes
- Department of Neurology, University of Campinas, São Paulo, Brazil
| | - R Coras
- Department of Neuropathology, University of Erlangen, Germany
| | - C E Crocker
- Division of Neurology, Dalhousie University of Halifax, Canada
| | | | - M Jones-Gotman
- McGill University, Montreal Neurological Institute, Montreal, Canada
| | - A M Kanner
- Epilepsy Center, University of Miami, Miller School of Medicine, USA
| | - A Mazarati
- Children's Discovery and Innovation Institute, D. Geffen School of Medicine at UCLA, Los Angeles, USA
| | - M Mula
- Epilepsy Group, Atkinson Morley Regional Neuroscience Centre, St. George's University Hospitals NHS Foundation Trust and Institute of Medical and Biomedical Sciences St. George's University of London, United Kingdom
| | - M L Smith
- Department of Psychology, University of Toronto, Canada
| | - A Omisade
- Division of Neurology, Dalhousie University of Halifax, Canada
| | | | - B P Hermann
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, Madison, USA
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Lapa A, Barbosa R, Mendonça I, Souza M, Peres F, Marini R, Rittner L, França M, Bergo F, Cendes F, Appenzeller S. AB1021 Prevalence and Neuroimaging Correlates of Central Ataxia In Childhood-Onset Systemic Lupus Erythematosus. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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de Rezende TJR, D'Abreu A, Guimarães RP, Lopes TM, Lopes-Cendes I, Cendes F, Castellano G, França MC. Cerebral cortex involvement in Machado-Joseph disease. Eur J Neurol 2014; 22:277-83, e23-4. [PMID: 25251537 DOI: 10.1111/ene.12559] [Citation(s) in RCA: 37] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 07/25/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND PURPOSE Machado-Joseph disease (MJD/SCA3) is the most frequent spinocerebellar ataxia, characterized by brainstem, basal ganglia and cerebellar damage. Few magnetic resonance imaging based studies have investigated damage in the cerebral cortex. The objective was to determine whether patients with MJD/SCA3 have cerebral cortex atrophy, to identify regions more susceptible to damage and to look for the clinical and neuropsychological correlates of such lesions. METHODS Forty-nine patients with MJD/SCA3 (mean age 47.7 ± 13.0 years, 27 men) and 49 matched healthy controls were enrolled. All subjects underwent magnetic resonance imaging scans in a 3 T device, and three-dimensional T1 images were used for volumetric analyses. Measurement of cortical thickness and volume was performed using the FreeSurfer software. Groups were compared using ancova with age, gender and estimated intracranial volume as covariates, and a general linear model was used to assess correlations between atrophy and clinical variables. RESULTS Mean CAG expansion, Scale for Assessment and Rating of Ataxia (SARA) score and age at onset were 72.1 ± 4.2, 14.7 ± 7.3 and 37.5 ± 12.5 years, respectively. The main findings were (i) bilateral paracentral cortex atrophy, as well as the caudal middle frontal gyrus, superior and transverse temporal gyri, and lateral occipital cortex in the left hemisphere and supramarginal gyrus in the right hemisphere; (ii) volumetric reduction of basal ganglia and hippocampi; (iii) a significant correlation between SARA and brainstem and precentral gyrus atrophy. Furthermore, some of the affected cortical regions showed significant correlations with neuropsychological data. CONCLUSIONS Patients with MJD/SCA3 have widespread cortical and subcortical atrophy. These structural findings correlate with clinical manifestations of the disease, which support the concept that cognitive/motor impairment and cerebral damage are related in disease.
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Affiliation(s)
- T J R de Rezende
- Department of Neurology, University of Campinas (UNICAMP), Campinas, Brazil; Department of Cosmic Rays and Chronology, University of Campinas (UNICAMP), Campinas, Brazil
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Bonilha da Silva C, Bergo FPG, D'Abreu A, Cendes F, Lopes-Cendes I, França MC. Dentate nuclei T2 relaxometry is a reliable neuroimaging marker in Friedreich's ataxia. Eur J Neurol 2014; 21:1131-1136. [DOI: 10.1111/ene.12448] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 03/17/2014] [Indexed: 11/29/2022]
Affiliation(s)
- C. Bonilha da Silva
- Department of Neurology and Neuroimaging Laboratory; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
| | - F. P. G. Bergo
- Department of Neurology and Neuroimaging Laboratory; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
| | - A. D'Abreu
- Department of Neurology and Neuroimaging Laboratory; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
| | - F. Cendes
- Department of Neurology and Neuroimaging Laboratory; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
| | - I. Lopes-Cendes
- Department of Medical Genetics; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
| | - M. C. França
- Department of Neurology and Neuroimaging Laboratory; Faculty of Medicine; University of Campinas - UNICAMP; Campinas SP Brazil
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Coan AC, Kubota B, Bergo FPG, Campos BM, Cendes F. 3T MRI quantification of hippocampal volume and signal in mesial temporal lobe epilepsy improves detection of hippocampal sclerosis. AJNR Am J Neuroradiol 2014; 35:77-83. [PMID: 23868151 DOI: 10.3174/ajnr.a3640] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE In mesial temporal lobe epilepsy, MR imaging quantification of hippocampal volume and T2 signal can improve the sensitivity for detecting hippocampal sclerosis. However, the current contributions of these analyses for the diagnosis of hippocampal sclerosis in 3T MRI are not clear. Our aim was to compare visual analysis, volumetry, and signal quantification of the hippocampus for detecting hippocampal sclerosis in 3T MRI. MATERIALS AND METHODS Two hundred three patients with mesial temporal lobe epilepsy defined by clinical and electroencephalogram criteria had 3T MRI visually analyzed by imaging epilepsy experts. As a second step, we performed automatic quantification of hippocampal volumes with FreeSurfer and T2 relaxometry with an in-house software. MRI of 79 healthy controls was used for comparison. RESULTS Visual analysis classified 125 patients (62%) as having signs of hippocampal sclerosis and 78 (38%) as having normal MRI findings. Automatic volumetry detected atrophy in 119 (95%) patients with visually detected hippocampal sclerosis and in 10 (13%) with visually normal MR imaging findings. Relaxometry analysis detected hyperintense T2 signal in 103 (82%) patients with visually detected hippocampal sclerosis and in 15 (19%) with visually normal MR imaging findings. Considered together, volumetry plus relaxometry detected signs of hippocampal sclerosis in all except 1 (99%) patient with visually detected hippocampal sclerosis and in 22 (28%) with visually normal MR imaging findings. CONCLUSIONS In 3T MRI visually inspected by experts, quantification of hippocampal volume and signal can increase the detection of hippocampal sclerosis in 28% of patients with mesial temporal lobe epilepsy.
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Affiliation(s)
- A C Coan
- Neuroimaging Laboratory, Department of Neurology, State University of Campinas, Campinas, São Paulo, Brazil
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Coan AC, Cendes F. Reply: To PMID 24072623. AJNR Am J Neuroradiol 2013; 34:E116. [PMID: 24244964 DOI: 10.3174/ajnr.a3751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Casseb RF, D'Abreu A, Ruocco HH, Lopes-Cendes I, Cendes F, Castellano G. Thalamic metabolic abnormalities in patients with Huntington's disease measured by magnetic resonance spectroscopy. Braz J Med Biol Res 2013; 46:722-7. [PMID: 23969973 PMCID: PMC3854413 DOI: 10.1590/1414-431x20132332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 08/17/2012] [Accepted: 05/14/2012] [Indexed: 01/18/2023] Open
Abstract
Huntington's disease (HD) is a neurologic disorder that is not completely understood; its fundamental physiological mechanisms and chemical effects remain somewhat unclear. Among these uncertainties, we can highlight information about the concentrations of brain metabolites, which have been widely discussed. Concentration differences in affected, compared to healthy, individuals could lead to the development of useful tools for evaluating the progression of disease, or to the advance of investigations of different/alternative treatments. The aim of this study was to compare the thalamic concentration of metabolites in HD patients and healthy individuals using magnetic resonance spectroscopy. We used a 2.0-Tesla magnetic field, repetition time of 1500 ms, and echo time of 135 ms. Spectra from 40 adult HD patients and 26 control subjects were compared. Quantitative analysis was performed using the LCModel method. There were statistically significant differences between HD patients and controls in the concentrations of N-acetylaspartate+N-acetylaspartylglutamate (NAA+NAAG; t-test, P<0.001), and glycerophosphocholine+phosphocholine (GPC+PCh; t-test, P=0.001) relative to creatine+phosphocreatine (Cr+PCr). The NAA+NAAG/Cr+PCr ratio was decreased by 9% and GPC+PCh/Cr+PCr increased by 17% in patients compared with controls. There were no correlations between the concentration ratios and clinical features. Although these results could be caused by T1 and T2 changes, rather than variations in metabolite concentrations given the short repetition time and long echo time values used, our findings point to thalamic dysfunction, corroborating prior evidence.
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Affiliation(s)
- R F Casseb
- Universidade Estadual de Campinas, Departamento de Raios Cósmicos e Cronologia, Instituto de Física "Gleb Wataghin", CampinasSP, Brasil
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Lapa A, Bento M, Rittner L, Ruocco H, Castellano G, Damasceno B, Costallat L, Appenzeller S, Lotufo R, Cendes F. THU0160 White matter lesions are predominantly demyelinating in systemic lupus erythematosus. An support vector machines classification of texture parameters. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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29
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Lapa A, Bento M, Rittner L, Ruocco H, Castellano G, Damasceno B, Costallat L, Lotufo R, Cendes F, Appenzeller S. THU0335 Support vector machines classification of texture parameters of white matter lesions in childhood-onset systemic lupus erythematosus. Possible mechanism to distinguish between demyelination and ischemia. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2300] [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] [Indexed: 11/04/2022]
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Lapa A, Ferretti L, Sinicato N, Postal M, Marini R, Cendes F, Appenzeller S. THU0336 Prevalence and clinical significance of white matter hyperintensities in juvenile systemic lupus erythematosus (JSLE). Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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31
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Rondinoni C, Amaro E, Cendes F, dos Santos AC, Salmon CEG. Effect of scanner acoustic background noise on strict resting-state fMRI. Braz J Med Biol Res 2013; 46:359-67. [PMID: 23579634 PMCID: PMC3854411 DOI: 10.1590/1414-431x20132799] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [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: 10/31/2012] [Accepted: 02/05/2013] [Indexed: 11/21/2022] Open
Abstract
Functional MRI (fMRI) resting-state experiments are aimed at identifying brain networks that support basal brain function. Although most investigators consider a 'resting-state' fMRI experiment with no specific external stimulation, subjects are unavoidably under heavy acoustic noise produced by the equipment. In the present study, we evaluated the influence of auditory input on the resting-state networks (RSNs). Twenty-two healthy subjects were scanned using two similar echo-planar imaging sequences in the same 3T MRI scanner: a default pulse sequence and a reduced "silent" pulse sequence. Experimental sessions consisted of two consecutive 7-min runs with noise conditions (default or silent) counterbalanced across subjects. A self-organizing group independent component analysis was applied to fMRI data in order to recognize the RSNs. The insula, left middle frontal gyrus and right precentral and left inferior parietal lobules showed significant differences in the voxel-wise comparison between RSNs depending on noise condition. In the presence of low-level noise, these areas Granger-cause oscillations in RSNs with cognitive implications (dorsal attention and entorhinal), while during high noise acquisition, these connectivities are reduced or inverted. Applying low noise MR acquisitions in research may allow the detection of subtle differences of the RSNs, with implications in experimental planning for resting-state studies, data analysis, and ergonomic factors.
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Affiliation(s)
- C Rondinoni
- Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brasil
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Morita ME, Yasuda CL, Betting LE, Pacagnella D, Conz L, Barbosa PH, Maurer-Morelli CV, Costa ALF, Kobayashi E, Lopes-Cendes I, Cendes F. MRI and EEG as long-term seizure outcome predictors in familial mesial temporal lobe epilepsy. Neurology 2012. [DOI: 10.1212/wnl.0b013e318278b63f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Millington RS, Yasuda CL, Jindahra P, Jenkinson M, Barbur JL, Kennard C, Plant GT, Cendes F, Bridge H. Characterization of Optic Tract Degeneration in Patients with Damage to the Visual Pathway. J Vis 2012. [DOI: 10.1167/12.9.1357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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34
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de Vasconcellos J, Maurer-Morelli C, Rocha C, Yasuda C, Tedeschi H, De Oliveira E, Cendes F, Lopes-Cendes I. A Gene Expression-Based In Silico Approach Identifies New Biological Targets in Human Mesial Temporal Lobe Epilepsy (S56.001). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s56.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Silva B, Guimaraes R, Bergo F, Franca M, D'Abreu A, Lopes-Cendes I, Cendes F. MRI T2-Relaxometry in Spinocerebellar Ataxia Type 3 (Machado-Joseph Disease) (P05.024). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p05.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Avansini S, Torres F, Rogerio F, Dogini D, Coan A, Secolin R, Rocha C, Costa A, Costa A, Piaza A, Reis L, Oliveira E, Tedeschi H, Queiroz L, Cendes F, Lopes-Cendes I. Investigating the Role of microRNAs Regulation in the Development of Focal Cortical Dysplasia (P05.081). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p05.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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37
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Dogini D, Rocha C, Yasuda C, Tedeschi H, Oliveira E, Maurer-Morelli C, Cendes F, Lopes-Cendes I. microRNA Expression Profile in Mesial Temporal Sclerosis Provides Insight into Underlying Mechanisms (P05.078). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p05.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Damasceno A, Damasceno B, Cendes F. Cerebellar Grey-Matter Lesion Load Is Related to Worse Motor Performance in Multiple Sclerosis Patients (P03.067). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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40
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Campos L, Landim R, Meneli T, Castellano G, Amato Filho AC, Piovesana L, Cendes F, D'Abreu A. Cerebellar Metabolic Alterations in Parkinson's Disease (P01.210). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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41
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Piovesana L, Campos L, Torres F, Cendes F, Lopes-Cendes I, Castellano G, Franca M, Piccinin C, Santos MC, Mineli T, Landim R, Amato Filho AC, D'Abreu A. Multimodal Neuroimaging Study of the Cerebellum in Primary Cervical Dystonia (P01.216). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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42
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Campos L, Landim R, Meneli T, Castellano G, Amato Filho AC, Piovesana L, Cendes F, D'Abreu A. Cerebellar Metabolic Alterations in Parkinson's Disease (IN6-1.010). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.in6-1.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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43
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Coan A, Beltramini G, Campos B, Covolan R, Cendes F. EEG-fMRI Haemodynamic Responses of Patients with Non-Lesional Mesial Temporal Lobe Epilepsy (MTLE) (P03.113). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.113] [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] [Indexed: 11/15/2022] Open
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44
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Cuellar-Baena S, Morais LMTS, Cendes F, Faria AV, Castellano G. Manual and semi-automatic quantification of in vivo ¹H-MRS data for the classification of human primary brain tumors. Braz J Med Biol Res 2012; 44:345-53. [PMID: 21484063 DOI: 10.1590/s0100-879x2011007500030] [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] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Accepted: 02/11/2011] [Indexed: 11/21/2022] Open
Abstract
In vivo proton magnetic resonance spectroscopy (¹H-MRS) is a technique capable of assessing biochemical content and pathways in normal and pathological tissue. In the brain, ¹H-MRS complements the information given by magnetic resonance images. The main goal of the present study was to assess the accuracy of ¹H-MRS for the classification of brain tumors in a pilot study comparing results obtained by manual and semi-automatic quantification of metabolites. In vivo single-voxel ¹H-MRS was performed in 24 control subjects and 26 patients with brain neoplasms that included meningiomas, high-grade neuroglial tumors and pilocytic astrocytomas. Seven metabolite groups (lactate, lipids, N-acetyl-aspartate, glutamate and glutamine group, total creatine, total choline, myo-inositol) were evaluated in all spectra by two methods: a manual one consisting of integration of manually defined peak areas, and the advanced method for accurate, robust and efficient spectral fitting (AMARES), a semi-automatic quantification method implemented in the jMRUI software. Statistical methods included discriminant analysis and the leave-one-out cross-validation method. Both manual and semi-automatic analyses detected differences in metabolite content between tumor groups and controls (P < 0.005). The classification accuracy obtained with the manual method was 75% for high-grade neuroglial tumors, 55% for meningiomas and 56% for pilocytic astrocytomas, while for the semi-automatic method it was 78, 70, and 98%, respectively. Both methods classified all control subjects correctly. The study demonstrated that ¹H-MRS accurately differentiated normal from tumoral brain tissue and confirmed the superiority of the semi-automatic quantification method.
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Affiliation(s)
- S Cuellar-Baena
- Departamento de Raios Cósmicos e Cronologia, Instituto de Física Gleb Wataghin, Faculdade de Ciências Médicas, Universidade de Campinas, SP, Brasil
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Cendes F, Andermann F, Dubeau F, Gloor P, Evans A, Jones-Gotman M, Olivier A, Andermann E, Robitaille Y, Lopes-Cendes I, Peters T, Melanson D. Early childhood prolonged febrile convulsions, atrophy and sclerosis of mesial structures, and temporal lobe epilepsy: An MRI volumetric study. Neurology 2011. [DOI: 10.1212/01.wnl.0000398451.98153.85] [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] [Indexed: 11/15/2022] Open
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Cuellar-Baena S, Morais L, Cendes F, Faria A, Castellano G. Manual and semi-automatic quantification of in vivo ¹H-MRS data for the classification of human primary brain tumors. Braz J Med Biol Res 2011. [DOI: 10.1590/s0100-879x2011000400012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Faria A, Macedo Jr. F, Marsaioli A, Ferreira M, Cendes F. Classification of brain tumor extracts by high resolution ¹H MRS using partial least squares discriminant analysis. Braz J Med Biol Res 2011; 44:149-64. [DOI: 10.1590/s0100-879x2010007500146] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2009] [Accepted: 11/17/2010] [Indexed: 11/22/2022] Open
Affiliation(s)
- A.V. Faria
- Universidade Estadual de Campinas; The Johns Hopkins University, USA
| | - F.C. Macedo Jr.
- Universidade Estadual de Campinas, Brasil; Universidade Estadual de Londrina, Brasil
| | | | | | - F. Cendes
- Universidade Estadual de Campinas, Brasil
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de Oliveira MS, Balthazar MLF, D'Abreu A, Yasuda CL, Damasceno BP, Cendes F, Castellano G. MR imaging texture analysis of the corpus callosum and thalamus in amnestic mild cognitive impairment and mild Alzheimer disease. AJNR Am J Neuroradiol 2011; 32:60-6. [PMID: 20966061 DOI: 10.3174/ajnr.a2232] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE TA is a branch of image processing that seeks to reduce image information by extracting texture descriptors from the image. TA of MR images of anatomic structures in mild AD and aMCI is not well-studied. Our objective was to attempt to find differences among patients with aMCI and mild AD and normal-aging subjects, by using TA applied to the MR images of the CC and the thalami of these groups of subjects. MATERIALS AND METHODS TA was applied to the MR images of 17 patients with aMCI, 16 patients with mild AD, and 16 normal-aging subjects. The TA approach was based on the GLCM. MR images were T1-weighted and were obtained in the sagittal and axial planes. The CC and thalami were manually segmented for each subject, and 44 texture parameters were computed for each of these structures. RESULTS TA parameters showed differences among the 3 groups for the CC and thalamus. A pair-wise comparison among groups showed differences for AD-control and aMCI-AD for the CC; and for AD-control, aMCI-AD, and aMCI-control for the thalamus. CONCLUSIONS TA is a useful technique to aid in the detection of tissue alterations in MR images of mild AD and aMCI and has the potential to become a helpful tool in the diagnosis and understanding of these pathologies.
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Affiliation(s)
- M S de Oliveira
- Department of Cosmic Rays and Chronology, Institute of Physics Gleb Wataghin, University of Campinas, São Paulo, Brazil.
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Bilevicius E, Yasuda CL, Silva MS, Guerreiro CAM, Lopes-Cendes I, Cendes F. Antiepileptic drug response in temporal lobe epilepsy: a clinical and MRI morphometry study. Neurology 2010; 75:1695-701. [PMID: 21060092 DOI: 10.1212/wnl.0b013e3181fc29dd] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the relationship between brain MRI and clinical characteristics and patterns of antiepileptic drug (AED) response in patients with mesial temporal lobe epilepsy (MTLE). METHODS A total of 165 MTLE patients were divided into seizure-free with AED (AED responders, n = 50), pharmacoresistant (n = 87), and remitting-relapsing seizure control group (n = 28). All groups were evaluated regarding age, frequency of seizures, and age at epilepsy onset, duration of epilepsy, febrile seizures, presence and side of hippocampal atrophy (HA), and initial precipitating injuries. For gray matter (GM) MRI voxel-based morphometry (VBM) we selected only patients with unilateral HA on visual MRI analysis (n = 100). Comparisons were made between all groups and 75 healthy controls. RESULTS Age at epilepsy onset was lower (p = 0.005) and initial frequency of seizures was higher in the pharmacoresistant compared with the other 2 groups (p = 0.018). All groups showed GM atrophy compared to controls in ipsilateral hippocampus, bilateral parahippocampal gyri, frontal, occipital, parietal, and cerebellar areas. In the AED responders group, such findings were more restricted to areas ipsilateral to the epileptic focus and more widespread in the pharmacoresistant and remitting-relapsing groups. VBM pairwise comparisons showed areas with GM volume reduction in the pharmacoresistant and remitting-relapsing groups compared with AED responders in bilateral periorbital frontal (p < 0.01), cingulum (p < 0.05), and temporal lobe contralateral to the epileptic focus (p < 0.05). CONCLUSIONS Pharmacoresistant and remitting-relapsing groups presented a similar pattern of GM atrophy, which was more widespread compared with AED responders. Conversely, age at epilepsy onset was lower and initial seizure frequency was higher in pharmacoresistant patients.
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Affiliation(s)
- E Bilevicius
- Neuroimaging Laboratory, UNICAMP (University of Campinas), Campinas, SP, Brazil
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Yasuda CL, Morita ME, Alessio A, Pereira AR, Balthazar MLF, Saude AV, Costa ALF, Costa ALC, Cardoso TA, Betting LE, Guerreiro CAM, Damasceno BP, Lopes-Cendes I, Tedeschi H, de Oliveira E, Cendes F. Relationship between environmental factors and gray matter atrophy in refractory MTLE. Neurology 2010; 74:1062-8. [DOI: 10.1212/wnl.0b013e3181d76b72] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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