CD36 regulates oxidative stress and inflammation in hypercholesterolemic CKD

Area of Science:

• Nephrology
• Immunology
• Cardiovascular Research

Background:

• Scavenger receptors, like CD36, are implicated in atherosclerosis by processing oxidized lipoproteins.
• Atherogenic states correlate with chronic kidney disease (CKD) progression, suggesting scavenger receptors' role in renal fibrogenesis.

Purpose of the Study:

• To investigate the role of CD36, a class B scavenger receptor, in a hypercholesterolemic model of CKD-induced renal fibrogenesis.

Main Methods:

• CD36-deficient and wild-type mice were fed a high-fat Western diet.
• Mice underwent sham or unilateral ureteral obstruction surgery.
• Fibrosis, macrophage infiltration, NF-kappaB activation, oxidative stress, and myofibroblast accumulation were assessed.

Main Results:

• CD36-deficient mice exhibited significantly reduced renal fibrosis post-obstruction compared to wild-type mice.
• Macrophage infiltration was transiently increased in CD36-deficient mice.
• Reduced NF-kappaB activation, oxidative stress, and myofibroblast accumulation were observed in CD36-deficient mice.

Conclusions:

• CD36 is a key mediator of renal fibrogenesis in this CKD model.
• CD36 modulates proinflammatory and oxidative pathways contributing to kidney fibrosis.
• Targeting CD36 may offer a therapeutic strategy for mitigating CKD progression.