Cyclosporine nephrotoxicity and rejection crisis: diagnosis by urinary enzyme excretion

Nephron. 1996;72(3):402-6. doi: 10.1159/000188903.

Abstract

The urinary enzymes alanine aminopeptidase (AAP; EC 3.4.11.2) and N-acetyl-B-D-glucosaminidase (NAG; EC 3.2.1.30) were measured daily in 35 renal transplant recipients during the early postoperative period. Each peak value of fractional excretion was corrected for its baseline value (CFE). CFE values above normal for both NAG and AAP were more frequently found in episodes of acute rejection than in cyclosporine acute nephrotoxicity episodes (76 vs. 0%; p < 0.001). Consequently, a rise in CFE levels for both NAG and AAP is strongly suggestive of acute rejection crisis.

MeSH terms

  • Acetylglucosaminidase / urine*
  • Adult
  • CD13 Antigens / urine*
  • Cyclosporine / toxicity*
  • Diagnosis, Differential
  • Female
  • Graft Rejection / diagnosis*
  • Graft Rejection / drug therapy
  • Graft Rejection / enzymology
  • Humans
  • Immunosuppressive Agents / toxicity*
  • Kidney Diseases / chemically induced
  • Kidney Transplantation* / immunology
  • Male
  • Middle Aged

Substances

  • Immunosuppressive Agents
  • Cyclosporine
  • Acetylglucosaminidase
  • CD13 Antigens