Insulin Resistance Linked to Specific Changes in Erythrocyte Membrane Lipid Composition in Children and Adolescents

Strategic Insights -

A recent study published in Scientific Reports has shed light on the relationship between insulin resistance and changes in the lipid composition of erythrocyte membranes in children and adolescents. Conducted by researchers from the Department of Pediatrics at the Medical University of Bialystok, Poland, the study analyzed the phospholipids and fatty acids of erythrocyte cell membranes in overweight and obese children. The research found that children with insulin resistance had significantly higher levels of sphingomyelin (SM) polyunsaturated fatty acids (PUFA), SM n-6 PUFA, and SM n-6/n-3 PUFA in their erythrocyte membranes compared to those without insulin resistance.

Key Takeaways:

  • The study analyzed the erythrocyte membrane lipid profile in a cohort of 68 children, among whom 72.06% had insulin resistance and 57.35% had metabolic dysfunction-associated steatotic liver disease (MASLD).
  • The group with insulin resistance had significantly higher levels of sphingomyelin (SM) polyunsaturated fatty acids (PUFA), SM n-6 PUFA, and SM n-6/n-3 PUFA in their erythrocyte membranes compared to the group without insulin resistance.
  • The study found no significant differences in membrane lipid profile between the MASLD and non-MASLD groups.
  • Phosphatidylethanolamine (PE) PUFA, PE n-3 PUFA, and PE n-6 PUFA levels were also higher in the group with insulin resistance, particularly in those with a homeostasis model assessment of insulin resistance (HOMA-IR) of 2.5 or higher.
  • These findings suggest that insulin resistance may be associated with specific changes in erythrocyte membrane lipid composition.
  • However, further studies on a larger group of patients are needed to confirm this association.

Statistics:

  • 72.06% of children in the study had insulin resistance.
  • 57.35% of children in the study had metabolic dysfunction-associated steatotic liver disease (MASLD).
  • The group with insulin resistance had significantly higher levels of SM PUFA (34.6% vs. 21.4%), SM n-6 PUFA (21.1% vs. 13.4%), and SM n-6/n-3 PUFA (1.4 vs. 1.1) in their erythrocyte membranes compared to the group without insulin resistance.
  • Phosphatidylethanolamine (PE) PUFA levels were 17.4% higher, PE n-3 PUFA levels were 12.5% higher, and PE n-6 PUFA levels were 15.1% higher in the group with insulin resistance compared to the group without insulin resistance.

Sources:

  • Erythrocyte membrane lipid profile in children and adolescents with metabolic dysfunction-associated steatotic liver disease and insulin resistance: a preliminary study. Scientific Reports, 2025,15(1):1-9.
  • Department of Pediatrics, Medical University of Bialystok, Poland.
  • Katarzyna Zdanowicz, Ewa Harasim-Symbor, Karol Sienkiewicz, Malgorzata Wojtkowska, Jacek Janica, Marta Flisiak-Jackiewicz, Anna Bobrus-Chociej, Adrian Chabowski, Dariusz Marek Lebensztejn.