Molecular dissection and anatomical basis of dystonia: X-linked recessive dystonia-parkinsonism (DYT3)

Ryuji Kaji, Satoshi Goto, Gen Tamiya, Satoshi Ando, Satoshi Makino, L. V. Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Pathological findings in dystonia have been unclear. X-linked recessive dystonia-parkinsonism (XDP, DYT3), endemic in the Panay island, the Philippines, is characterized by the clinical onset with dystonia followed by parkinsonism. It provides a unique opportunity to explore the anatomical basis of dystonia, because it has discernible pathological changes even at its early phase of dystonia. After extensive searches for the anatomical basis in XDP, we found selective loss of striosomal neurons in the striatum in dystonic patients' brain. Because striosomal neurons inhibit nigrostriatal dopaminergic neurons via GABAergic innervation, the striosomal lesion could account for dopamine excess in the striatum, which in turn causes a hyperkinetic state or dystonia. We also identified the causative gene as one of the general transcription factor genes, TAF1. XDP has certain similarities to Huntington disease not only in pathological and clinical findings, but also the molecular mechanism, which disturbs expression of genes essential for striatal neurons, such as DRD2. Therapeutic intervention may become possible through pharmacological measures that affect gene expression.

Original languageEnglish
Pages (from-to)280-283
Number of pages4
JournalJournal of Medical Investigation
Volume52
Issue numberSUPPL.
DOIs
Publication statusPublished - 2005 Nov 1
Externally publishedYes

Keywords

  • DYT3
  • Dopamine
  • Dystonia
  • Striosome
  • TAF1

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Fingerprint Dive into the research topics of 'Molecular dissection and anatomical basis of dystonia: X-linked recessive dystonia-parkinsonism (DYT3)'. Together they form a unique fingerprint.

  • Cite this