Abnormalities of plasma lipoprotein composition and fluidity in psoriasis

Area of Science:

• Biochemistry
• Dermatology
• Clinical Chemistry

Background:

• Lipoprotein composition and fluidity are crucial for metabolic health.
• Psoriasis is a chronic inflammatory skin condition with potential systemic implications.
• Alterations in lipid metabolism may be associated with psoriasis pathogenesis.

Purpose of the Study:

• To investigate the chemical composition and fluidity of lipoproteins in children with psoriasis compared to healthy controls.
• To determine if specific lipoprotein fractions (LDL, HDL) show compositional differences in psoriatic children.
• To correlate observed compositional changes with alterations in lipoprotein fluidity.

Main Methods:

• Utilized fluorescence polarization with 1,6-diphenyl-1,3,5-hexatriene (DPH) as a probe.
• Analyzed lipoprotein fractions from two age- and sex-matched groups: healthy normolipidemic children and psoriatic children.
• Quantified percentage content of triacylglycerol, apo-protein, and total cholesterol in lipoprotein fractions.

Main Results:

• Psoriatic children showed significantly increased triacylglycerol and decreased apo-protein content across all lipoprotein fractions.
• Low-density lipoproteins (LDL) and high-density lipoproteins (HDL) in psoriatic children had significantly higher total cholesterol and cholesterol/protein ratios.
• These compositional changes in LDL and HDL were associated with significant alterations in their fluidity.

Conclusions:

• Lipoprotein composition and fluidity are significantly altered in children with psoriasis.
• The observed modifications in lipoprotein profiles may play a role in the physiopathology of psoriasis.
• These findings suggest potential clinical relevance for understanding and managing psoriasis.