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Proc Natl Acad Sci U S A ; 98(2): 585-90, 2001 Jan 16.
Article in English | MEDLINE | ID: mdl-11149935

ABSTRACT

Bipolar disorder or manic depressive illness is a major psychiatric disorder that is characterized by fluctuation between two abnormal mood states. Mania is accompanied by symptoms of euphoria, irritability, or excitation, whereas depression is associated with low mood and decreased motivation and energy. The etiology is currently unknown; however, numerous family, twin, and adoption studies have argued for a substantial genetic contribution. We have conducted a genome survey of bipolar disorder using 443 microsatellite markers in a set of 20 families from the general North American population to identify possible susceptibility loci. A maximum logarithm of odds score of 3.8 was obtained at D22S278 on 22q. Positive scores were found spanning a region of nearly 32 centimorgans (cM) on 22q, with a possible secondary peak at D22S419. Six other chromosomal regions yielded suggestive evidence for linkage: 3p21, 3q27, 5p15, 10q, 13q31-q34, and 21q22. The regions on 22q, 13q, and 10q have been implicated in studies of schizophrenia, suggesting the possible presence of susceptibility genes common to both disorders.


Subject(s)
Bipolar Disorder/genetics , Chromosomes, Human, Pair 22/genetics , Genome, Human , Bipolar Disorder/classification , Bipolar Disorder/epidemiology , British Columbia/epidemiology , California/epidemiology , Chromosome Mapping , Chromosomes, Human, Pair 10/genetics , Chromosomes, Human, Pair 13/genetics , Chromosomes, Human, Pair 21/genetics , Chromosomes, Human, Pair 3/genetics , Chromosomes, Human, Pair 5/genetics , Female , Genetic Predisposition to Disease , Genotype , Humans , Lod Score , Male , Microsatellite Repeats , Polymerase Chain Reaction , Schizophrenia/epidemiology , Schizophrenia/genetics
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