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. 1993 Feb;52(2):327–334.

Linkage analysis of schizophrenia with five dopamine receptor genes in nine pedigrees

Hilary Coon, William Byerley, John Holik, Mark Hoff, Marina Myles-Worsley, Lars Lannfelt, Pierre Sokoloff, Jean-Charles Schwartz, Merilyne Waldo, Robert Freedman, Rosemarie Plaetke
PMCID: PMC1682188  PMID: 8094267

Abstract

Alterations in dopamine neurotransmission have been strongly implicated in the pathogenesis of schizophrenia for nearly 2 decades. Recently, the genes for five dopamine receptors have been cloned and characterized, and genetic and physical map information has become available. Using these five loci as candidate genes, we have tested for genetic linkage to schizophrenia in nine multigenerational families which include multiple affected individuals. In addition to testing conservative disease models, we have used a neurophysiological indicator variable, the P50 auditory evoked response. Deficits in gating of the P50 response have been shown to segregate with schizophrenia in this sample and may identify carriers of gene(s) predisposing for schizophrenia. Linkage results were consistently negative, indicating that a defect at any of the actual receptor sites is unlikely to be a major contributor to schizophrenia in the nine families studied.

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Selected References

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