Expanded (CAG)n, (CGG)n and (GAA)n trinucleotide repeat microsatellites, and mutant purine synthesis and pigmentation genes cause schizophrenia and autism.

Abstract:

:Unstable (CAG)n trinucleotide repeat microsatellites are hypothesized to cause schizophrenia. The (CAG)n microsatellite of dominant spinal cerebellar ataxia type 1 (SCA1) is a candidate schizophrenia gene. Autism results from expansions of (CGG)n and (GAA)n trinucleotide repeat stretches at fragile X syndrome (FRAXA), and the recessive Friedreich's ataxia (FA). Dominant ataxia genes may cause schizophrenia and recessive ataxia genes may cause autism. Syndromes with autism show purine synthesis defects (PSDs) and/or pigmentation defects (PDs). Autism is caused by very lengthy expansions of (CAG)n, (CGG)n and (GAA)n repeats, while schizophrenia results from much smaller (CAG)n and (CGG)n repeat expansions.

journal_name

Med Hypotheses

journal_title

Medical hypotheses

authors

Fischer KM

doi

10.1016/s0306-9877(98)90080-9

subject

Has Abstract

pub_date

1998-09-01 00:00:00

pages

223-33

issue

3

eissn

0306-9877

issn

1532-2777

pii

S0306-9877(98)90080-9

journal_volume

51

pub_type

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