Nephrotoxicity and Renal Pathophysiology: A Contemporary Perspective.

Area of Science:

• Nephrology
• Toxicology
• Pathology

Background:

• The kidney's functional unit, the nephron, comprises diverse cell types susceptible to damage from various stimuli.
• Renal failure stems from intrinsic causes (e.g., glomerulonephritis, polycystic kidney disease) and extrinsic factors (e.g., cardiovascular disease, diabetes, sepsis).
• The kidney is a primary target for toxicity from drugs, environmental pollutants, and natural substances.

Purpose of the Study:

• To review the current understanding of nephrotoxicity.
• To integrate knowledge of nephrotoxicity with pathological causes of renal failure.
• To address critical questions in diagnosing, prognosing, and treating acute and chronic renal failure.

Main Methods:

• Literature review of nephrotoxicity mechanisms.
• Analysis of commonalities between nephrotoxicant-induced and pathologically induced renal failure.
• Emphasis on molecular mechanisms of renal cell death.

Main Results:

• Identified numerous nephrotoxic drugs (e.g., cancer therapeutics, antibiotics), environmental pollutants (e.g., cadmium, lead), and natural toxins (e.g., aristolochic acids, mycotoxins).
• Highlighted shared molecular mechanisms of renal cell death underlying different causes of renal failure.
• Emphasized the link between nephrotoxicant exposure and pathological renal failure.

Conclusions:

• Integrating nephrotoxicity research with the study of pathological renal failure is crucial.
• Understanding shared mechanisms of renal cell death can improve diagnosis and treatment of kidney injury.
• Further research is needed to address acute kidney injury progression to chronic kidney disease.