Frontotemporal dementia (FTD) and genetic mutations including progranulin gene

DOI Web Site 19 References
  • Arai Tetsuaki
    Department of Psychogeriatrics, Tokyo Institute of Psychiatry, Tokyo Metropolitan Organization for Medical Research
  • Hasegawa Masato
    Department of Molecular Neurobiology, Tokyo Institute of Psychiatry, Tokyo Metropolitan Organization for Medical Research
  • Nishihara Masugi
    Department of Veterinary Physiology, Veterinary Medical Science, The University of Tokyo
  • Nonaka Takashi
    Department of Molecular Neurobiology, Tokyo Institute of Psychiatry, Tokyo Metropolitan Organization for Medical Research
  • Kametani Fuyuki
    Department of Molecular Neurobiology, Tokyo Institute of Psychiatry, Tokyo Metropolitan Organization for Medical Research
  • Yoshida Mari
    Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University
  • Hashizume Yoshio
    Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University
  • Beach Thomas G
    Sun Health Research Institute
  • Morita Mitsuya
    Department of Neurology, Jichi Medical University
  • Nakano Imaharu
    Department of Neurology, Jichi Medical University
  • Oda Tatsuro
    Department of Neuropsychiatry, National Shimofusa Mental Hospital
  • Tsuchiya Kuniaki
    Department of Laboratory Medicine and Pathology, Tokyo Metropolitan Matsuzawa Hospital
  • Akiyama Haruhiko
    Department of Psychogeriatrics, Tokyo Institute of Psychiatry, Tokyo Metropolitan Organization for Medical Research

Bibliographic Information

Other Title
  • シンポジウム９‐１　前頭側頭型認知症（ＦＴＤ）をめぐる基礎と臨床の最前線　遺伝子変異とＦＴＤ：Ｐｒｏｇｒａｎｕｌｉｎ遺伝子をふくめて
  • 遺伝子変異とFTD--Progranulin遺伝子をふくめて
  • イデンシ ヘンイ ト FTD Progranulin イデンシ オ フクメテ

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Abstract

Research on familial frontotemporal lobar degeneration (FTLD) has led to the discovery of disease-causing genes: microtubule-associated protein tau (MAPT), progranulin (PGRN) and valosin-containing protein (VCP). TAR DNA-binding protein of 43kDa (TDP-43) has been identified as a major component of tau-negative ubiquitin-positive inclusions in familial and sporadic FTLD and amyotrophic lateral sclerosis (ALS), which are now referred to as TDP-43 proteinopathy. Recent findings of mutations in TDP-43 gene in familial and sporadic ALS cases confirm the pathogenetic role for TDP-43 in neurodegeneration.<br> TDP-43 proteinopathies have been classified into 4 pathological subtypes. Type 1 is characterized by numerous dystrophic neurites (DNs), Type 2 has numerous neuronal cytoplasmic inclusions (NCIs), Type 3 has NCIs and DNs and Type 4 has neuronal intranuclear inclusions (NIIs) and DNs. There is a close relationship between such pathological subtypes of TDP-43 proteinopathy and the immunoblot pattern of C-terminal fragments of accumulated TDP-43. These results parallel our earlier findings of differing C-terminal tau fragments in progressive supranuclear palsy and corticobasal degeneration, despite identical composition of tau isoforms. Taken together, these results suggest that elucidating the mechanism of C-terminal fragment origination may shed light on the pathogenesis of several neurodegenerative disorders involving TDP-43 proteinopathy and tauopathy.<br>

Journal

  • Rinsho Shinkeigaku

    Rinsho Shinkeigaku 48 (11), 990-993, 2008

    Societas Neurologica Japonica

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