TY - JOUR
T1 - Possible locus for bipolar disorder near the dopamine transporter on chromosome 5
AU - Kelsoe, J R
AU - Sadovnick, A D
AU - Kristbjarnarson, H
AU - Bergesch, P
AU - Mroczkowski-Parker, Z
AU - Drennan, M
AU - Rapaport, M H
AU - Flodman, P
AU - Spence, M A
AU - Remick, R A
PY - 1996/11/22
Y1 - 1996/11/22
N2 - The dopamine transporter (DAT) plays a key role in the regulation of dopaminergic neurotransmission by mediating the active reuptake of synaptic dopamine. It is an important candidate gene for bipolar disorder because of data implicating dopamine abnormalities in mania, and because it is the site of action of amphetamine, which has activating and psychotogenic properties. DAT has recently been cloned by its homology to a family of transporters, and mapped to chromosome 5p15.3. We tested DAT for linkage to bipolar disorder in a collection of 21 families from the general North American population (University of California, San Diego/University of British Columbia [UCSD/UBC] families), three Icelandic pedigrees, and Old Order Amish pedigree 110. We examined three markers at DAT, including a 5' TaqI RFLP (HDAT-TaqI), a highly polymorphic variable number of tandem repeats marker (VNTR) (HDAT-VNTR1), and a 3' 40-bp repeat marker (HDAT-PCR1), as well as two nearby microsatellite markers, D5S392 and D5S406. A maximum lod score of 2.38 was obtained at D5S392 in one of the UCSD/UBC families under an autosomal-dominant model. A lod score of 1.09 was also obtained under the same dominant model in the Amish at HDAT-PCR1. In the combined set of families, a maximum lod score of 1.76 was obtained under an autosomal-recessive model at HDAT-TaqI. Positive results were also obtained at several markers, using three nonparametric methods in the UCSD/UBC family set: the affected pedigree member method (P = 0.001), an affected sib pair method (ESPA, P = 0.0008), and the transmission disequilibrium test (P = 0.024). These results suggest the presence of a susceptibility locus for bipolar disorder near the DAT locus on chromosome 5.
AB - The dopamine transporter (DAT) plays a key role in the regulation of dopaminergic neurotransmission by mediating the active reuptake of synaptic dopamine. It is an important candidate gene for bipolar disorder because of data implicating dopamine abnormalities in mania, and because it is the site of action of amphetamine, which has activating and psychotogenic properties. DAT has recently been cloned by its homology to a family of transporters, and mapped to chromosome 5p15.3. We tested DAT for linkage to bipolar disorder in a collection of 21 families from the general North American population (University of California, San Diego/University of British Columbia [UCSD/UBC] families), three Icelandic pedigrees, and Old Order Amish pedigree 110. We examined three markers at DAT, including a 5' TaqI RFLP (HDAT-TaqI), a highly polymorphic variable number of tandem repeats marker (VNTR) (HDAT-VNTR1), and a 3' 40-bp repeat marker (HDAT-PCR1), as well as two nearby microsatellite markers, D5S392 and D5S406. A maximum lod score of 2.38 was obtained at D5S392 in one of the UCSD/UBC families under an autosomal-dominant model. A lod score of 1.09 was also obtained under the same dominant model in the Amish at HDAT-PCR1. In the combined set of families, a maximum lod score of 1.76 was obtained under an autosomal-recessive model at HDAT-TaqI. Positive results were also obtained at several markers, using three nonparametric methods in the UCSD/UBC family set: the affected pedigree member method (P = 0.001), an affected sib pair method (ESPA, P = 0.0008), and the transmission disequilibrium test (P = 0.024). These results suggest the presence of a susceptibility locus for bipolar disorder near the DAT locus on chromosome 5.
KW - Bipolar Disorder
KW - Carrier Proteins
KW - Chromosomes, Human, Pair 5
KW - Dopamine
KW - Dopamine Plasma Membrane Transport Proteins
KW - Genotype
KW - Humans
KW - Membrane Glycoproteins
KW - Membrane Transport Proteins
KW - Nerve Tissue Proteins
KW - Polymorphism, Restriction Fragment Length
KW - Bipolar Disorder
KW - Carrier Proteins
KW - Chromosomes, Human, Pair 5
KW - Dopamine
KW - Dopamine Plasma Membrane Transport Proteins
KW - Genotype
KW - Humans
KW - Membrane Glycoproteins
KW - Membrane Transport Proteins
KW - Nerve Tissue Proteins
KW - Polymorphism, Restriction Fragment Length
U2 - 10.1002/(SICI)1096-8628(19961122)67:6<533::AID-AJMG4>3.0.CO;2-I
DO - 10.1002/(SICI)1096-8628(19961122)67:6<533::AID-AJMG4>3.0.CO;2-I
M3 - Article
C2 - 8950410
SN - 0148-7299
JO - American Journal of Medical Genetics
JF - American Journal of Medical Genetics
ER -