Related Experiment Videos
Association study of 90 candidate gene polymorphisms in panic disorder
Eduard Maron1, Tiit Nikopensius, Sulev Kõks
1Department of Psychiatry, University of Tartu, Tartu 50417, Estonia. Eduard.Maron@kliinikum.ee
Psychiatric Genetics
|February 22, 2005
Summary
Genetic variations in neurotransmitter system genes are linked to panic disorder (PD) susceptibility. Specific gene polymorphisms influence both general and pure panic disorder phenotypes differently.
Area of Science:
- Neuroscience
- Genetics
- Psychiatry
Background:
- Panic disorder (PD) is a complex psychiatric condition with a significant genetic component.
- Neurotransmitter systems, including serotonin, dopamine, and cholecystokinin, are implicated in anxiety and PD.
- Identifying specific genetic markers associated with PD can improve understanding of its etiology.
Purpose of the Study:
- To screen single nucleotide polymorphisms (SNPs) in genes related to anxiety neurobiology.
- To investigate the association of these SNPs with panic disorder (PD) and its subtypes.
Main Methods:
- Genotyped 90 polymorphisms in 21 candidate genes using Arrayed Primer Extension technology.
- Analyzed 127 PD patients and 146 healthy controls.
- Performed association and haplotype analyses on the whole group, PD with comorbid depression, and pure PD subgroups.
Main Results:
- Eight SNPs in eight genes showed nominal association with PD phenotypes.
- Polymorphisms in cholecystokinin, serotonin, and dopamine systems were associated with PD-all and PD-comorbid groups.
- Pure PD was associated with HTR2A and DRD1 receptor polymorphisms; haplotype analysis revealed protective associations for DRD1 and HTR2A in pure PD.
Conclusions:
- Genetic variants in neurotransmitter system genes, individually having minor effects, may collectively contribute to PD susceptibility.
- Genetic variability appears to influence pure and comorbid PD phenotypes distinctly.