Format

Send to

Choose Destination
Parkinsonism Relat Disord. 2016 Jan;22 Suppl 1:S29-33. doi: 10.1016/j.parkreldis.2015.09.020. Epub 2015 Sep 8.

Tauopathies as clinicopathological entities.

Author information

1
Department of Neurology, Frontotemporal Degeneration Center (FTDC), University of Pennsylvania Perelman School of Medicine, Hospital of the University of Pennsylvania, 3600 Spruce Street, Philadelphia, PA 19104, United States. Electronic address: dirwin@mail.med.upenn.edu.

Abstract

Tauopathies are a class of neurodegenerative disorders characterized by neuronal and/or glial inclusions composed of the microtubule-binding protein, tau. Several lines of evidence suggest tau aggregation is central to the neurodegenerative process in tauopathies. First, recent animal and cell model studies find abnormally-modified tau alone may be transmitted between adjacent neurons and spread to anatomically connected brain regions to recapitulate human disease. Further, staging efforts in human autopsy cases suggest a sequential distribution of tau aggregation in the central nervous system that could reflect this observed cell-to-cell transmission of pathogenic tau species in animal models. Finally, pathogenic mutations in the MAPT gene encoding tau protein cause hereditary forms of tauopathy. Clinically, tauopathies can present with a range of phenotypes that include both movement- and cognitive/behavioral-disorders (i.e. frontotemporal dementia spectrum disorders) or non-specific amnestic symptoms in advanced age. A major limitation is that current clinical diagnostic criteria for these disorders do not reliably differentiate underlying tauopathy from other neurodegenerative diseases, such as TDP-43 proteinopathies. Thus, current research efforts are focused on improving the ante mortem diagnosis of tauopathies, including pre-clinical stages of disease, as many therapeutic strategies for emerging disease-modifying therapies focus on preventing abnormal folding and spread of tau pathology.

KEYWORDS:

Argyrophilic grain disease; Corticobasal degeneration; Corticobasal syndrome tauopathy; Frontotemporal dementia; Frontotemporal lobar degeneration; MAPT mutation; Pick's disease; Primary age related tauopathy; Primary progressive aphasia; Progressive supranuclear palsy

PMID:
26382841
PMCID:
PMC4662611
DOI:
10.1016/j.parkreldis.2015.09.020
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center