COX-2 gene variants in bipolar disorder-I

Area of Science:

• Genetics
• Psychiatry
• Molecular Biology

Background:

• Bipolar I disorder (BD-I) pathogenesis involves complex genetic and environmental factors.
• Studies indicate a link between BD-I and inflammation via shared genetic polymorphisms and altered cytokine levels.
• COX-2 gene variations may influence inflammatory responses, potentially impacting BD-I susceptibility.

Purpose of the Study:

• To investigate the association between COX-2 gene polymorphisms (COX-2-765G→C and COX-2-1195A→G) and bipolar I disorder.
• To explore the potential role of these genetic variants in the inflammatory pathways implicated in BD-I.

Main Methods:

• Genotyping of COX-2-765G→C and COX-2-1195A→G polymorphisms using PCR-RFLP.
• Analysis of 180 patients with bipolar I disorder and 170 healthy controls.
• Statistical comparison of genotype and allele frequencies between patient and control groups.

Main Results:

• A significant association was found between COX-2 gene variants and the development of BD-I.
• Statistically significant differences in COX-2-1195A→G genotypes and alleles were observed between controls and BD-I patients (p<0.000).
• The COX-2-1195A→G AA genotype showed a significant association with BD-I (p<0.000).

Conclusions:

• The COX-2-1195A→G AA genotype may facilitate the development of bipolar I disorder.
• A protective role against BD-I was suggested for the COX-2-1195A→G G+ genotype (p<0.000).
• Weak linkage disequilibrium was noted between COX-2-765G→C and COX-2-1195A→G polymorphisms.