title: Molecular genetics of psychopathologies: a search for simple answers to complex problems.
abstract: Molecular genetics is helping define the contribution of genetic involvement in behavioral disorders. At this time, however, a severely limiting factor for DNA linkage studies of these disorders remains the definition of the phenotype. An example of this is found in the group of studies examining linkage of schizophrenia to the 5q location. Although various broad clinical interpretations of the schizophrenia phenotype were used to test for linkage, all but one study reported findings negative for linkage of schizophrenia to the 5q area. We offer a strategy based on family studies using segregation data of behavioral subtypes. We apply this strategy using molecular genetic technology to our study of psychopathology in patients. This approach offers the possibility of a clearer definition of the phenotype and is suggested for use in both linkage and association studies of neuropsychiatric disorders.
authors: Biobehavioral Sciences Graduate Degree Program/Psychology, University of Connecticut, Storrs 06269-4154, USA.
authors: B E
authors: BE
authors: Ginsburg
authors: T M
authors: TM
authors: Werick
authors: J I
authors: JI
authors: Escobar
authors: S
authors: S
authors: Kugelmass
authors: J J
authors: JJ
authors: Treanor
authors: L
authors: L
authors: Wendtland
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000627:therapeutic use; D001921:Brain / Q000503:physiopathology; D003024:Clozapine / Q000627:therapeutic use; D005091:Exons; D005260:Female; D015870:Gene Expression / Q000502:physiology; D005838:Genotype; D006801:Humans; D008297:Male; D010641:Phenotype; D011569:Psychiatric Status Rating Scales; D017448:Receptors, Dopamine D2 / Q000235:genetics*; D050638:Receptors, Dopamine D4; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis / Q000188:drug therapy / Q000235:genetics*; D012565:Schizophrenic Psychology
chemical_list: D014150:Antipsychotic Agents; C493599:DRD4 protein, human; D017448:Receptors, Dopamine D2; D050638:Receptors, Dopamine D4; D003024:Clozapine