AGEs and carbonyl stress: potential pathogenetic factors of long-term uraemic complications

Area of Science:

• Nephrology
• Biochemistry
• Cardiology

Background:

• Advanced glycation end products (AGEs) and advanced lipoxidation end products accumulate in uraemia.
• Pentosidine, a specific AGE, is elevated and serves as a marker for AGE precursors.
• Accumulation of these compounds may not solely depend on declining renal function.

Purpose of the Study:

• To explore the role of AGEs and carbonyl stress in the pathogenesis of chronic renal failure complications.
• To investigate the association between AGEs, carbonyl stress, and cardiovascular alterations in haemodialysis patients.

Main Methods:

• Analysis of AGEs and advanced lipoxidation end products in uraemic patients.
• Assessment of carbonyl precursors.
• Cross-sectional studies in haemodialysis patients focusing on left ventricular geometry and function.

Main Results:

• Uraemic patients exhibit elevated levels of AGE precursors and advanced lipoxidation end products.
• The 'carbonyl stress' theory proposes these elevations contribute to end-stage renal disease complications.
• Preliminary findings suggest AGEs and carbonyl stress are implicated in left ventricular alterations in haemodialysis patients.

Conclusions:

• Carbonyl stress is a significant factor in uraemia, contributing to complications like dialysis amyloidosis and cardiovascular disease.
• AGEs and carbonyl stress are potentially involved in the pathogenesis of cardiac dysfunction in end-stage renal disease.
• Further research is warranted to elucidate the precise mechanisms and therapeutic implications.