Cytokine elevation and transaminitis after laparoscopic donor nephrectomy.

Area of Science:

• Nephrology
• Immunology
• Hepatology

Background:

• Acute kidney injury (AKI) is common in critically ill patients and can lead to multiorgan dysfunction syndrome.
• Previous studies in nephrectomized mice showed increased interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α), contributing to systemic inflammation and liver injury.

Purpose of the Study:

• To investigate if patients undergoing laparoscopic donor nephrectomy experience increased postoperative cytokine levels.
• To assess for liver injury and kidney injury in patients after donor nephrectomy.
• To evaluate markers of systemic inflammation and AKI in these patients.

Main Methods:

• Collected serial serum and urine samples from 32 patients undergoing laparoscopic donor nephrectomy and 17 controls.
• Quantified serum IL-6, IL-18, TNF-α, monocyte chemotactic protein-1 (MCP-1), and liver enzymes (AST, ALT).
• Measured urinary neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), MCP-1, and IL-18.

Main Results:

• Donor nephrectomy patients showed increased serum creatinine, serum IL-6, MCP-1, and aspartate transaminase (AST).
• Serum TNF-α levels trended upward in the donor nephrectomy group.
• Increased urinary NGAL was observed at 24 hours post-surgery, but KIM-1 did not significantly increase.

Conclusions:

• Acute reduction in kidney function following donor nephrectomy induces systemic inflammation.
• These changes may have distant effects on the liver, as indicated by elevated AST.
• Further research is needed to explore urinary NGAL as a marker for renal tubular stress or hypertrophy in the remaining kidney.