Overview
Chronic rejection of renal transplants, often referred to as chronic allograft nephropathy, is characterized by progressive dysfunction of the transplanted kidney despite the absence of acute rejection episodes, frequently associated with the presence of donor-specific IgG antibodies. 1Diagnosis
Key Diagnostic Criteria: Presence of donor-specific IgG antibodies, hypertension requiring multiple medications, proteinuria >1 gram/day, gradual rise in serum creatinine.
Recommended Tests: Modified mixed antiglobulin reaction for detecting donor-specific IgG antibodies, renal function tests (serum creatinine, proteinuria), and histopathological examination post-nephrectomy.
Grading: Pathological grading often reveals extensive intimal proliferation and interstitial fibrosis. 1Management
First-Line Treatments: Control of hypertension with multiple antihypertensive agents, monitoring and managing proteinuria.
Adjunctive Treatments: Plasmapheresis or intravenous immunoglobulin (IVIG) may be considered in cases with high titers of donor-specific antibodies, though specific dosing is not detailed in the abstract. 1Special Populations
Comorbidities: No specific details provided regarding management adjustments for pregnancy, pediatrics, or elderly patients in the given abstracts. 1Key Recommendations
Monitor for donor-specific IgG antibodies post-transplant to identify patients at risk for chronic rejection (Evidence: Moderate) 1
Aggressive management of hypertension and proteinuria is crucial in preventing further deterioration of renal function in suspected chronic rejection (Evidence: Moderate) 1
Consider adjunctive immunomodulatory therapies like plasmapheresis in patients with detectable donor-specific antibodies, though evidence is limited (Evidence: Weak) 1References
1 Pierce JC, Kay S, Lee HM. Donor-specific IgG antibody and the chronic rejection of human renal allografts. Surgery 1975. link