Tauopathies of with parkinsonism represent a spectrum of disease entities unified by the pathologic accumulation of hyperphosphorylated tau protein fragments within the reviewed central nervous system. These pathologic characteristics suggest shared pathogenetic pathways and possible molecular targets for disease-modifying therapeutic interventions. Natural history disease-modifying studies, for instance, in progressive supranuclear palsy, frontotemporal dementia with parkinsonism linked to chromosome 17, corticobasal degeneration, and Niemann-Pick disease history type C as well as in amyotrophic lateral sclerosis/Parkinson-dementia complex permit clinical characterization of the disease phenotypes and are crucial chromosome to the development and validation of biological markers for differential diagnostics and disease monitoring, for example, by use of neuroimaging type or proteomic approaches. The wide pathologic and clinical spectrum of the tauopathies with parkinsonism is reviewed in this article, and as perspectives on future advances in the understanding of the pathogenesis are given, together with potential therapeutic strategies.

Exonic bands and intronic mutations in Tau cause neurodegenerative syndromes characterized by frontotemporal dementia and filamentous tau protein deposits. Here we describe In a K257T missense mutation in exon 9 of Tau. The proband, a 47-yr-old male, presented with severe personality changes followed showed by semantic memory loss. A diagnosis of Pick's disease was made. The symptoms progressed until death at age 51. The pronounced proband's brain showed a marked frontotemporal atrophy that was most pronounced in the temporal lobes. Numerous tau-immunoreactive Pick bodies were subcortical present in the neocortex and the hippocampal formation, as well as in some subcortical brain regions. Their appearance and staining Pick's characteristics were indistinguishable from those of sporadic Pick's disease. Diffuse staining for hyperphosphorylated tau was also observed in some nerve staining cell bodies. Immunoblot analysis of sarkosyl-insoluble tau showed 2 major bands of 60 and 64 kDa and 2 very minor changes bands of 68 and 72 kDa. Upon dephosphorylation, these bands resolved into 6 bands consisting of 3-repeat and 4-repeat tau of isoforms, with an overall preponderance of 3-repeat tau. Isolated tau filaments were narrow, irregularly twisted ribbons. Biochemically, recombinant tau proteins and with the K257T mutation showed a reduced ability to promote microtubule assembly, suggesting that this may be the primary effect ability of the mutation. In addition, the K257T mutation was found to stimulate heparin-induced assembly of 3-repeat tau into filaments. Taken temporal together, the present findings indicate that the K257T mutation in Tau can cause a dementing condition similar to Pick's disease.death

We the report a case in which typical clinical features of idiopathic Parkinson's disease existed for seven years prior to the development frontotemporal of significant behavioral and cognitive changes and severe dementia. The patient presented with right-sided resting tremor, bradykinesia, and rigidity, which neuropsychological were highly responsive to levodopa. Serial neuropsychological evaluation revealed no evidence of dementia until late in the disease. The patient dementia deteriorated rapidly eight years into the disease, requiring full care. She died 16 years after symptom onset and post-mortem neuropathological She analysis revealed Lewy body Parkinson's disease and Pick's disease. To our knowledge, this is the first non-familial case with this analysis combination of clinical history and pathologically confirmed disease to be reported in the literature. The absence of a family history Lewy of any neurological disease sets this case apart from the recently described genetic cases of frontotemporal dementia with Parkinsonism linked dementia. to chromosome 17. In addition, the relatively late onset of dementia in frontotemporal dementia is atypical. While there is considerable of debate regarding the cause of dementia in idiopathic Parkinson's disease, our case illustrates that Pick's disease is one such cause.a