The glycine transporter 1 gene (GLYT1) is associated with methamphetamine-use disorder

  • Yukitaka Morita
  • , Hiroshi Ujike
  • , Yuji Tanaka
  • , Makiko Kishimoto
  • , Yuko Okahisa
  • , Tatsuya Kotaka
  • , Mutsuo Harano
  • , Toshiya Inada
  • , Tokutaro Komiyama
  • , Toru Hori
  • , Mitsuhiko Yamada
  • , Yoshimoto Sekine
  • , Nakao Iwata
  • , Masaomi Iyo
  • , Ichiro Sora
  • , Norio Ozaki
  • , Shigetoshi Kuroda

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Glycine transporter (GlyT)-1 plays a pivotal role in maintaining the glycine level at the glutamatergic synapse. Glycine is an allosteric agonist of N-methyl-D-aspartate (NMDA) receptors. Because activation of NMDA receptors is an essential step for induction of methamphetamine dependence and psychosis, differences in the functioning of GlyT-1 due to genetic variants of the GlyT-1 gene (GLYT1) may influence susceptibility. A case-control genetic association study of the GLYT1 gene examined 204 patients with methamphetamine-use disorder and 210 healthy controls. We examined three single nucleotide polymorphisms (SNPs), SNP1, IVS3 + 411C > T, rs2486001; SNP2, 1056G > A, rs2248829; and SNP3, IVS11 + 22G > A, rs2248632, of the GLYT1 gene and found that SNP1 showed a significant association in both genotype (P = 0.0086) and allele (P = 0.0019) with methamphetamine-use disorder. The T-G haplotype at SNP1 and SNP2 was a significant risk factor for the disorder (P = 0.000039, odds ratio: 2.04). The present findings indicate that genetic variation of the GLYT1 gene may contribute to individual vulnerability to methamphetamine dependence and psychosis.

Original languageEnglish
Pages (from-to)54-58
Number of pages5
JournalAmerican Journal of Medical Genetics, Part B: Neuropsychiatric Genetics
Volume147
Issue number1
DOIs
Publication statusPublished - 05-01-2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Genetics(clinical)
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience

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