[Immunosuppressive strategies and chronic graft dysfunction in kidney transplantation]

Area of Science:

• Nephrology
• Immunosuppression
• Transplantation

Background:

• Chronic graft dysfunction frequently leads to return to dialysis.
• Histological signs of rejection and calcineurin inhibitor nephrotoxicity are common causes.
• While acute rejection rates have decreased, calcineurin inhibitor renal toxicity persists.

Purpose of the Study:

• To evaluate strategies for managing calcineurin inhibitor nephrotoxicity in renal transplant recipients.
• To explore the use of non-nephrotoxic immunosuppressors as alternatives or adjuncts.
• To identify patient selection criteria for calcineurin-sparing protocols.

Main Methods:

• Review of clinical data, histological findings, and biological markers.
• Analysis of outcomes with non-nephrotoxic immunosuppressors (e.g., mycophenolic acid, proliferation signal inhibitors).
• Assessment of strategies to minimize or discontinue calcineurin inhibitors.

Main Results:

• Switching to non-nephrotoxic agents can reduce or eliminate calcineurin inhibitor use in established nephrotoxicity.
• Attempts to prevent nephrotoxicity by reducing calcineurin inhibitors often increase acute rejection rates.
• Careful patient selection is crucial for successful calcineurin-sparing treatment.

Conclusions:

• Managing calcineurin inhibitor nephrotoxicity requires a personalized approach.
• Anticalcineurin-sparing strategies necessitate careful monitoring and patient selection.
• Long-term follow-up is essential to confirm the benefits of these strategies on graft survival.