ABSTRACT
Primary age-related tauopathy (PART) is characterized by the presence of tau neurofibrillary tangles (NFTs) which are typically observed in Alzheimer's disease (AD) brains, with few or without β-amyloid (Aβ) plaques. The diagnosis of PART can be categorized into "definite" or "possible" depending on the amount of Aβ plaques. Definite PART is diagnosed when NFTs are observed and the Braak stage is ≤IV, with Thal Aβ Phase 0 (Crary et al., 2014). According to the neuropathological diagnostic criteria, we reported that PART was frequently observed in the Chinese population according to our findings from specimens in our brain bank, with 47% of brain bank subjects meeting the criteria for PART. There is no consensus on the nature of PART. It remains to be elucidated whether PART is an early form of AD or a novel tauopathy (Duyckaerts et al., 2015; Jellinger et al., 2015).
Subject(s)
Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Aging/pathology , Alzheimer Disease/pathology , Brain/pathology , Cohort Studies , Neurofibrillary Tangles/pathology , Tauopathies/pathologyABSTRACT
La Demencia Lobar Fronto Temporal (DFTL) variante frontal suele ser subdiagnosticada por presentar síntomas psiquiátricos y preservación de la memoria hasta etapas muy avanzadas de la enfermedad. Se inicia durante la mediana edad con trastornos conductuales, afectivos y del habla. Frecuentemente es tratada erróneamente como trastorno depresivo, esquizofrenia o psicosis funcional durante las primeras fases. Es la 3ra causa de demencia degenerativa y la 2da causa en menores de 65 años. Es por ello que considero importante el tener en cuenta su diagnóstico y diagnósticos diferenciales con patologías psiquiátricas y también orgánicas como la del Cerebro Hundido (FBSS) que suele diagnosticarse como DFTL. Se abordan las definiciones, prevalencia, incidencia, factores de riesgo, genética, clasificaciones, criterios diagnósticos, diagnósticos diferenciales y abordajes terapéuticas
Frontotemporal Dementia (FTD) with frontal variant is usually underdiagnosed for presenting psychiatric symptoms and the preservation of memory until very advanced stages of the disease. Its onset is during midlife with behavioral, affective and speech disorders. it is frequently mistreated as depressive disorder, schizophrenia or functional psychosis during the first phases. It's the third cause of degenerative dementia and the second cause among people below 65 years-old. This is why I consider it important to take into consideration its diagnosis and differential diagnoses with sychiatric as well as organic pathologies such as the "Sagging Brain" which is usually diagnosed as FTLD. This article includes definitions, prevalence, incidence, risk factors, genetics, classifications, diagnostic criteria, differential diagnoses and therapeutic approch