Correlation between CSF biomarkers of Alzheimer’s disease and global cognition in a psychogeriatric clinic cohort

Autor(es)

Márcia Radanovic ; Carlos A. Oshiro ; Thiago Q. Freitas ; Leda L. Talib ; Orestes V. Forlenza

• Tipo de documento: Artigo Científico
• Fonte: Revista Brasileira de Psiquiatria; n. ahead, p. -, 2019.

Resumo

Objective: The relationship between biomarkers of amyloid-beta aggregation (Aβ1-42) and/or neurodegeneration (Tau protein) in cerebrospinal fluid (CSF) and cognitive decline is still unclear. We aimed to ascertain whether CSF biomarkers correlate with cognitive performance in healthy and cognitively impaired subjects, starting from clinical diagnoses. Methods: We tested for correlation between CSF biomarkers and Mini-Mental State Examination (MMSE) scores in 208 subjects: 54 healthy controls, 82 with mild cognitive impairment (MCI), 46 with Alzheimer’s disease (AD), and 26 with other dementias (OD). Results: MMSE correlated weakly with all CSF biomarkers in the overall sample (r = 0.242, p < 0.0006). Aβ1-42 and MMSE correlated weakly in MCI (r = 0.247, p = 0.030), and moderately in OD (r = 0.440, p = 0.027). t-Tau showed a weak inverse correlation with MMSE in controls (r = -0.284, p = 0.043) and MCI (r = -0.241, p = 0.036), and a moderate/strong correlation in OD (r = 0.665), p = 0.0003). p-Tau correlated weakly with MMSE in AD (r = -0.343, p = 0.026) and moderately in OD (r = -0.540, p = 0.0005). The Aβ1-42/p-Tau ratio had a moderate/strong correlation with MMSE in OD (r = 0.597, p = 0.001). Conclusion: CSF biomarkers correlated best with cognitive performance in OD. t-Tau correlated weakly with cognition in controls and patients with MCI. In AD, only p-Tau levels correlated with cognitive performance. This pattern, which has been reported previously, seems to indicate that CSF biomarkers might not be reliable as indicators of disease severity. (AU)

• Processo FAPESP: 09/52825-8 - Neurobiologia da doença de Alzheimer: marcadores de risco, prognóstico e resposta terapêutica
• Beneficiário: Wagner Farid Gattaz
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/01302-9 - Identificação das vias direta e indireta da inibição da glicogênio sintase kinase 3B pelo lítio em cultura de neurônios
• Beneficiário: Vanessa de Jesus Rodrigues de Paula
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/14211-6 - Comprimento telomérico no sistema nervoso central de um modelo de Doença de Alzheimer tratado com lítio
• Beneficiário: Giancarlo de Mattos Cardillo
• Modalidade de apoio: Bolsas no Brasil - Mestrado