title: Parkinsonism and frontotemporal dementia: the clinical overlap.
abstract: Frontotemporal dementia is commonly associated with parkinsonism in several sporadic (i.e., progressive supranuclear palsy, corticobasal degeneration) and familial neurodegenerative disorders (i.e., frontotemporal dementia associated with parkinsonism and MAPT or progranulin mutations in chromosome 17). The clinical diagnosis of these disorders may be challenging in view of overlapping clinical features, particularly in speech, language, and behavior. The motor and cognitive phenotypes can be viewed within a spectrum of clinical, pathologic, and genetic disorders with no discrete clinicopathologic correlations but rather lying within a dementia-parkinsonism continuum. Neuroimaging and cerebrospinal fluid analysis can be helpful, but the poor specificity of clinical and imaging features has enormously challenged the development of biological markers that could differentiate these disorders premortem. This gap is critical to bridge in order to allow testing of novel biological therapies that may slow the progression of these proteinopathies.
authors: Department of Neurology, Movement Disorders Center, UC Neuroscience Institute, University of Cincinnati, Cincinnati, OH, USA.
authors: Alberto J
authors: AJ
authors: Espay
authors: Irene
authors: I
authors: Litvan
mesh_terms: D057180:Frontotemporal Dementia / Q000175:diagnosis / Q000235:genetics / Q000473:pathology* / Q000503:physiopathology*; D020022:Genetic Predisposition to Disease; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics; D020734:Parkinsonian Disorders / Q000175:diagnosis / Q000235:genetics / Q000473:pathology* / Q000503:physiopathology*; D000077153:Progranulins; D013494:Supranuclear Palsy, Progressive / Q000175:diagnosis / Q000235:genetics / Q000473:pathology / Q000503:physiopathology; D016875:tau Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: C492314:GRN protein, human; D036341:Intercellular Signaling Peptides and Proteins; C054369:MAPT protein, human; D000077153:Progranulins; D016875:tau Proteins