Apolipoprotein E phenotypes in patients with gout: relation with hypertriglyceridaemia

Area of Science:

• Genetics
• Metabolic Disorders
• Rheumatology

Background:

• Gout is associated with lipid abnormalities and increased risk of atherosclerotic diseases.
• Apolipoprotein E (apo E) plays a crucial role in lipid metabolism.
• The relationship between apo E polymorphism and gout-related lipid abnormalities requires further investigation.

Purpose of the Study:

• To investigate the association between apolipoprotein E (apo E) phenotypes and allele frequencies with lipid abnormalities in male gout patients.
• To determine if apo E polymorphism influences the prevalence of hyperlipidaemia in gout.

Main Methods:

• Apolipoprotein E (apo E) phenotype and serum lipid levels were determined in 221 male gout patients and 141 male controls.
• Apo E phenotype was analyzed using one-dimensional flat gel isoelectric focusing.

Main Results:

• No significant differences in apo E phenotype or allele frequencies were observed between gout patients and controls.
• The apo E e4 allele frequency was significantly higher in hyperlipidaemic gout subjects compared to normolipidaemic gout subjects.
• Gout patients with the apo E4/3 phenotype exhibited higher serum triglyceride, total cholesterol, apo B, and apo E levels than those with the apo E3/3 phenotype.

Conclusions:

• Gout patients with hyperlipidaemia have a higher frequency of the apo E e4 allele.
• Apo E e4 may contribute to hyperlipidaemia susceptibility in gout, potentially exacerbating atherosclerotic disease risk.
• These findings highlight the role of apo E polymorphism in the metabolic complications of gout.