Differences in a dinucleotide repeat polymorphism in the tau gene between Caucasian and Japanese populations: implication for progressive supranuclear palsy

Previous studies of a tau polymorphism in Caucasian subjects with progressive supranuclear palsy (PSP) showed an over-representation of one genotype, A0/A0, versus normal control subjects. This result suggested that tau may be playing a genetic role in the progression of PSP. This study examines whe...

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Veröffentlicht in:Neuroscience letters 1998-07, Vol.250 (2), p.135-137
Hauptverfasser: Conrad, Chris, Amano, Naoji, Andreadis, Athena, Xia, Yu, Namekataf, Kazuhiko, Oyama, Fumitaka, Ikeda, Kenji, Wakabayashi, Koichi, Takahashi, Hitoshi, J. Thal, Leon, Katzman, Robert, Shackelford, Deborah A, Matsushita, Masaaki, Masliah, Eliezer, Sawa, Akira
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Sprache:eng
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Zusammenfassung:Previous studies of a tau polymorphism in Caucasian subjects with progressive supranuclear palsy (PSP) showed an over-representation of one genotype, A0/A0, versus normal control subjects. This result suggested that tau may be playing a genetic role in the progression of PSP. This study examines whether the over-representation of A0/A0 is Caucasian-specific or universal to PSP. Unfortunately, we found this dinucleotide repeat was relatively non-polymorphic in Japanese subjects. As a result, the genotypes were virtually the same, A0/A0, between Japanese PSP and control subjects. However, this outcome, albeit negative, does suggest two possible roles of the tau gene in PSP pathogenesis: (1) the role of this dinucleotide repeat in PSP may be different between Caucasian and Japanese populations or (2) this repeat may not be causal for PSP but represents a marker for other molecular genetic risk factors within or close to the tau gene on chromosome 17.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(98)00417-0