Abstract

Diabetes mellitus is a systemic metabolic disorder that accelerates injury to both the liver and kidneys. Beyond 
hemodynamic and metabolic derangements, two convergent hallmarks-oxidative stress and immune dysregulation
shape the trajectory of diabetes-associated hepatotoxicity and nephrotoxicity. Hyperglycemia, insulin resistance, and 
lipid overload drive mitochondrial and NADPH oxidase–derived reactive oxygen species, advanced glycation end
product signaling, endoplasmic reticulum stress, and impaired autophagy. These redox disturbances activate innate 
and adaptive immune programs, including Toll-like receptor pathways, NLRP3 inflammasome assembly, 
macrophage polarization, and T-cell skewing, thereby sustaining inflammation and fibrotic remodeling. The liver 
and kidney communicate through cytokines, chemokines, hepatokines, adipokines, bile acid–FXR signaling, 
extracellular vesicles, and uremic toxins, creating a feed-forward hepato–renal axis that amplifies injury in both 
organs. This review synthesizes current mechanistic understanding of oxidative and immune pathways in diabetic 
liver and kidney disease, highlights emerging biomarkers and noninvasive assessment tools, and outlines therapeutic 
strategies-metabolic, antioxidant, and immunomodulatory for interrupting shared nodes of pathobiology and organ 
crosstalk.