CAMILA NASCIMENTO MANTELLI

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LIM/21 - Laboratório de Neuroimagem em Psiquiatria, Hospital das Clínicas, Faculdade de Medicina

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Autor: GRINBERG, Lea T. × Autor: NITRINI, Ricardo × Colaboração internacional: Estados Unidos × Tipo de produção: article × Assunto: Clinical Neurology ×

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  • article 235 Citação(ões) na Scopus
    Locus coeruleus volume and cell population changes during Alzheimer's disease progression: A stereological study in human postmortem brains with potential implication for early-stage biomarker discovery
    (2017) THEOFILAS, Panos; EHRENBERG, Alexander J.; DUNLOP, Sara; ALHO, Ana T. Di Lorenzo; NGUY, Austin; LEITE, Renata Elaine Paraizo; RODRIGUEZ, Roberta Diehl; MEJIA, Maria B.; SUEMOTO, Claudia K.; FERRETTI-REBUSTINI, Renata Eloah De Lucena; POLICHISO, Livia; NASCIMENTO, Camila F.; SEELEY, William W.; NITRINI, Ricardo; PASQUALUCCI, Carlos Augusto; JACOB FILHO, Wilson; RUEB, Udo; NEUHAUS, John; HEINSEN, Helmut; GRINBERG, Lea T.
    Introduction: Alzheimer's disease (AD) progression follows a specific spreading pattern, emphasizing the need to characterize those brain areas that degenerate first. The brainstem's locus coeruleus (LC) is the first area to develop neurofibrillary changes (neurofibrillary tangles [NFTs]). Methods: The methods include unbiased stereologiCal analyses in human brainstems to estimate LC volume and neuronal population in controls and individuals across all AD stages. Results: As the Braak stage increases by 1 unit, the LC volume decreases by 8.4%. Neuronal loss started only midway through AD progression. Age-related changes spare the LC. Discussion: The long gap between NFT accumulation and neuronal loss suggests that a second trigger may be necessary to induce neuronal death in AD. Imaging studies should determine whether LC volumetry can replicate the stage-wise atrophy observed here and how these changes are specific to AD. LC volumetry may develop into a screening biomarker for selecting high-yield candidates to undergo expensive and less accessible positron emission tomography scans and to monitor AD progression from presymptomatic stages.
  • article 12 Citação(ões) na Scopus
    beta-amyloid pathology is not associated with depression in a large community sample autopsy study
    (2021) SALDANHA, Nanci Moreira; SUEMOTO, Claudia Kimie; RODRIGUEZ, Roberta Diehl; LEITE, Renata Elaine Paraizo; NASCIMENTO, Camila; FERRETI-REBUSTINI, Renata; SILVA, Magnolia Moreira da; PASQUALUCCI, Carlos Augusto; NITRINI, Ricardo; JACOB-FILHO, Wilson; LAFER, Beny; GRINBERG, Lea T.; NUNES, Paula Villela
    Background: : Depression has been associated with dementia. This study aimed to verify if 13-amyloid Alzheimer's disease-type burden was associated with lifetime major depressive disorder (MDD) and with current depressive symptoms in a large population-based autopsy study. Methods: : We included 1013 deceased subjects submitted to autopsy (mean age=74.3 +/- 11.6 years, 49% men) in a community sample. 13-amyloid burden was measured in all cases based on the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) criteria for presence and density of neuritic plaques. Lifetime MDD was defined when at least one previous episode according to the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders - DSM (SCID). Depressive symptoms and cognitive impairment were determined using the depression item of the Neuropsychiatric Inventory (D-NPI>0) and the Clinical Dementia Rating scale (CDR>0.5) respectively. Results: : Lifetime MDD, late life depression (LLD) and current depressive symptoms were associated with cognitive impairment (p<0.001). Additionally, neuritic plaques were associated with cognitive impairment (p<0.001). Moderate or frequent neurite plaque density was not associated with MDD, LLD or current depressive symptoms in multiple logistic models adjusted for age, gender, and cognitive impairment. Limitations:: In this cross-sectional study, all neuropsychiatric and cognitive assessment were based on informant-report of deceased participants. Conclusions: : Different clinical depictions of depression were associated with dementia in this large community sample of elderly individuals with multiethnic backgrounds. Notwithstanding, they were unrelated to 13-amyloid pathology in the brain areas studied. The link between depression and dementia might be complex and determined by multiple factors.