Subfractions of high-density lipoprotein (HDL) and dysfunctional HDL in chronic kidney disease patients

Area of Science:

• Nephrology
• Cardiology
• Lipidology

Background:

• Chronic kidney disease (CKD) is strongly linked to increased cardiovascular disease (CVD) risk.
• CKD significantly alters lipoprotein metabolism, particularly affecting high-density lipoprotein (HDL) particles.
• Standard serum HDL cholesterol levels fail to predict CVD risk in CKD patients, suggesting qualitative HDL changes are critical.

Purpose of the Study:

• To review the current understanding of HDL subfractions in CKD.
• To explore the concept and implications of HDL dysfunction in CKD patients.
• To highlight how CKD-induced HDL modifications contribute to cardiovascular risk.

Main Methods:

• Review of existing literature on HDL metabolism in CKD.
• Analysis of studies investigating HDL subfractions and their properties.
• Examination of evidence linking HDL dysfunction to inflammation and oxidation in CKD.

Main Results:

• CKD is associated with alterations in HDL particle number and composition.
• HDL loses its normal atheroprotective functions under CKD conditions.
• Dysfunctional HDL, resulting from inflammation and oxidation, is implicated in CKD-related CVD.

Conclusions:

• HDL dysfunction, rather than HDL cholesterol levels, is a key factor in increased CVD risk in CKD.
• Understanding HDL subfractions and dysfunction is crucial for managing cardiovascular risk in CKD patients.
• Further research into therapeutic strategies targeting HDL dysfunction in CKD is warranted.