Positive association of the serotonin 5-HT7 receptor gene with schizophrenia in a Japanese population

Masashi Ikeda, Nakao Iwata, Tsuyoshi Kitajima, Tatsuyo Suzuki, Yoshio Yamanouchi, Yoko Kinoshita, Norio Ozaki

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Several lines of evidence suggest that abnormalities in the serotonin system may be related to the pathophysiology of schizophrenia. The 5-HT 7 receptor is considered to be a possible schizophrenia- susceptibility factor, based on findings from binding, animal, postmortem, and genomewide linkage studies. In this study, we conducted linkage disequilibrium (LD) mapping of the human 5-HT7 receptor gene (HTR7) and selected four 'haplotype-tagging (ht) SNPs'. Using these four htSNPs, we then conducted an LD case-control association analysis in 383 Japanese schizophrenia patients and 351 controls. Two htSNPs (SNP2 and SNP5) and haplotypes were found to be associated with schizophrenia. A promoter SNP (SNP2) was further assessed in a dual-luciferase reporter assay, but it was not found to have any functional relevance. Although we failed to find an actual susceptibility variant that could modify the function of HTR7, our results support the supposition that HTR7 is a susceptibility gene for schizophrenia in this ethnic group.

Original languageEnglish
Pages (from-to)866-871
Number of pages6
JournalNeuropsychopharmacology
Volume31
Issue number4
DOIs
Publication statusPublished - 01-04-2006

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Schizophrenia
Population
Genes
Linkage Disequilibrium
Haplotypes
Single Nucleotide Polymorphism
Serotonin Receptors
Chromosome Mapping
Luciferases
Ethnic Groups
Serotonin
serotonin 7 receptor
serotonin 5 receptor

All Science Journal Classification (ASJC) codes

  • Pharmacology
  • Psychiatry and Mental health

Cite this

Ikeda, Masashi ; Iwata, Nakao ; Kitajima, Tsuyoshi ; Suzuki, Tatsuyo ; Yamanouchi, Yoshio ; Kinoshita, Yoko ; Ozaki, Norio. / Positive association of the serotonin 5-HT7 receptor gene with schizophrenia in a Japanese population. In: Neuropsychopharmacology. 2006 ; Vol. 31, No. 4. pp. 866-871.
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Positive association of the serotonin 5-HT7 receptor gene with schizophrenia in a Japanese population. / Ikeda, Masashi; Iwata, Nakao; Kitajima, Tsuyoshi; Suzuki, Tatsuyo; Yamanouchi, Yoshio; Kinoshita, Yoko; Ozaki, Norio.

In: Neuropsychopharmacology, Vol. 31, No. 4, 01.04.2006, p. 866-871.

Research output: Contribution to journalArticle

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