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CASE REPORTS
JOURNAL ARTICLE
Staphylococcus Infection-Associated Glomerulonephritis in a Kidney Transplant Patient: Case Report.
Transplantation Proceedings 2018 April
BACKGROUND: Staphylococcus infection-associated glomerulonephritis is a rare cause of graft dysfunction in kidney transplant. Suspicion should be high in the setting of elevation of serum creatinine, active urinary sediment, with or without hypocomplementemia, and simultaneous Staphylococcus aureus infection. A kidney biopsy is usually diagnostic.
CASE REPORT: A 56-year-old man, who received a kidney transplant in 1998, with basal serum creatinine of 1.2 mg/dL and normal urinary sediment, was admitted to our kidney transplantation unit with graft dysfunction and a urinary tract infection caused by S aureus with septicemia, treated with antibiotics, in the context of recently intensified immunosuppression for a primary immune thrombocytopenia diagnosed 3 weeks earlier. After antibiotic treatment, the patient persisted with graft dysfunction, edema, and hypertension, with a S aureus isolation in the urine culture, active urinary sediment, and low C3. A kidney biopsy was performed, showing diffuse proliferative endocapillary and mesangial glomerulonephritis, with IgA(++) and C3(++) mesangial and endocapillary deposits in immunofluorescence. The patient was treated symptomatically and maintained his regular immunosuppression. At the last follow-up, his serum creatinine value was stable at 2.5 mg/dL.
CONCLUSIONS: The onset of a nephritic syndrome with a simultaneous S aureus infection should lead to suspicion of this uncommon entity, confirmed histologically. Despite its association with poor graft survival, our patient's graft survival remained stable.
CASE REPORT: A 56-year-old man, who received a kidney transplant in 1998, with basal serum creatinine of 1.2 mg/dL and normal urinary sediment, was admitted to our kidney transplantation unit with graft dysfunction and a urinary tract infection caused by S aureus with septicemia, treated with antibiotics, in the context of recently intensified immunosuppression for a primary immune thrombocytopenia diagnosed 3 weeks earlier. After antibiotic treatment, the patient persisted with graft dysfunction, edema, and hypertension, with a S aureus isolation in the urine culture, active urinary sediment, and low C3. A kidney biopsy was performed, showing diffuse proliferative endocapillary and mesangial glomerulonephritis, with IgA(++) and C3(++) mesangial and endocapillary deposits in immunofluorescence. The patient was treated symptomatically and maintained his regular immunosuppression. At the last follow-up, his serum creatinine value was stable at 2.5 mg/dL.
CONCLUSIONS: The onset of a nephritic syndrome with a simultaneous S aureus infection should lead to suspicion of this uncommon entity, confirmed histologically. Despite its association with poor graft survival, our patient's graft survival remained stable.
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