Preservation

Area of Science:

• Nephrology
• Immunosuppression
• Transplantation

Background:

• Kidney graft survival is influenced by various factors, including preservation methods and immunosuppressive therapy.
• Understanding the impact of cyclosporine on early and long-term graft function is crucial for optimizing patient outcomes.

Purpose of the Study:

• To evaluate the effect of cyclosporine on kidney graft function and survival.
• To compare outcomes between cyclosporine-treated and non-cyclosporine-treated patients.
• To analyze the influence of ischemia time and preservation methods on graft outcomes with cyclosporine therapy.

Main Methods:

• Retrospective analysis of kidney transplant recipients comparing cyclosporine and non-cyclosporine groups.
• Assessment of graft function parameters: first-day nonfunction, delayed function, and one-month nonfunction.
• Evaluation of one-year graft survival rates based on preservation methods (cold storage vs. machine preservation) and ischemia times.

Main Results:

• Cyclosporine did not increase early graft nonfunction but improved one-year graft survival.
• Longer cold ischemia times (>36 hours) increased the incidence of graft nonfunction.
• Cyclosporine demonstrated a greater benefit for delayed-function grafts compared to immediate-function grafts, enhancing survival rates significantly.

Conclusions:

• Cyclosporine is beneficial for one-year kidney graft survival, particularly in cases of delayed graft function.
• Preservation methods and ischemia duration significantly impact early graft function, with cold ischemia longer than 36 hours being detrimental.
• Cyclosporine's efficacy is evident across different graft types (first grafts and regrafts) and preservation methods, though specific interactions exist.