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Vancomycin nephrotoxicity: A comprehensive clinico-pathological study.
Rajesh Nachiappa Ganesh1,2, Angelina Edwards3, Ziad El Zaatari2
1Department of Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India.
Vancomycin nephrotoxicity presents a distinct clinical and pathological profile, aiding diagnosis and treatment. Kidney biopsies reveal specific features distinguishing vancomycin nephrotoxicity (VNT) from other causes of acute kidney injury.
Area of Science:
- Nephrology
- Pharmacology
- Pathology
Background:
- Vancomycin is crucial for resistant infections but causes nephrotoxicity.
- The clinicopathologic profile and pathogenesis of vancomycin nephrotoxicity remain poorly understood.
- Clinical studies are confounded by comorbidities and polypharmacy; animal models are insufficient.
Purpose of the Study:
- To define the clinicopathologic and morphologic profiles of vancomycin nephrotoxicity (VNT).
- To differentiate VNT from other causes of acute kidney injury (AKI) in patients undergoing renal biopsy.
Main Methods:
- Studied 36 patients with AKI suspected of VNT, utilizing renal biopsies.
- Detailed clinical, morphologic, and follow-up data were analyzed.
- Categorized patients into VNT (25) and non-VNT (NO-VNT) (11) groups for comparison.
Main Results:
- VNT group: characteristic clinical course (high vancomycin levels, rapid severe AKI, prompt recovery post-discontinuation).
- VNT group: renal biopsy findings (allergic tubulointerstitial nephritis, granulomatous inflammation, nephrotoxic tubular necrosis, vancomycin casts).
- Distinct clinico-pathologic profile differentiated VNT from NO-VNT.
Conclusions:
- Vancomycin nephrotoxicity exhibits a unique morphologic and clinical signature.
- This profile aids in diagnosis, treatment guidance, and prognostication.
- The findings provide insights into the pathogenesis of VNT.
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