Decreased Serum Stromal Cell-Derived Factor-1 in Patients with Familial Hypercholesterolemia and Its Strong...

Area of Science:

• Cardiovascular Biology
• Lipid Metabolism
• Atherosclerosis Research

Background:

• Stromal cell-derived factor-1 (SDF-1) plays complex roles in atherosclerosis.
• Its relationship with hyperlipidemia remains unclear.
• No studies have examined serum SDF-1 in heterozygous familial hypercholesterolemia (HeFH) and its lipid correlations.

Purpose of the Study:

• To investigate serum SDF-1 levels in untreated HeFH patients.
• To determine correlations between serum SDF-1 and lipid fractions/subfractions.
• To explore the relationship between SDF-1, oxidized LDL (oxLDL), and myeloperoxidase (MPO) in HeFH.

Main Methods:

• Eighty-one untreated HeFH patients and 32 healthy controls were recruited.
• Serum SDF-1, oxLDL, and MPO were quantified using ELISA.
• Lipoprotein subfractions were analyzed using Lipoprint, with FH diagnosed via Dutch Lipid Clinic Network criteria.

Main Results:

• HeFH patients exhibited significantly lower serum SDF-1 compared to controls.
• Serum SDF-1 showed negative correlations with total cholesterol, triglycerides, LDL-cholesterol (LDL-C), and apolipoprotein B100 (ApoB100).
• SDF-1 also negatively correlated with VLDL, IDL, large LDL, and large/intermediate HDL subfractions, but positively with mean LDL-size and small HDL; it negatively correlated with oxLDL and MPO. VLDL and oxLDL were the best predictors of serum SDF-1.

Conclusions:

• Lower serum SDF-1 in HeFH patients suggests a role in the condition.
• The strong correlations between SDF-1 and various lipid parameters indicate shared metabolic pathways.
• These findings support SDF-1's involvement in atherogenesis, particularly in the context of hyperlipidemia.