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Biopsy proven acute interstitial nephritis after treatment with moxifloxacin
Christos Chatzikyrkou1, Iyas Hamwi, Christian Clajus
1Department of Nephrology and Hypertension, Institute of Pathology, Medical School Hannover, Hannover, Germany. chatzikyrkou.christos@mh-hannover.de
Background:
Acute interstitial nephritis (AIN) is an important cause of reversible acute kidney injury. At least 70% of AIN is caused by various drugs, mainly penicillins and non-steroidal anti-inflammatory drugs. Quinolones are only rarely known to cause AIN and so far cases have been mainly described with older fluoroquinolones.
Case Presentation:
Here we describe a case of biopsy proven interstitial nephritis after moxifloxacin treatment. The patient presented with fever, rigors and dialysis dependent acute kidney injury, just a few days after treatment of a respiratory tract infection with moxifloxacin. The renal biopsy revealed dense infiltrates mainly composed of eosinophils and severe interstitial edema. A course of oral prednisolone (1 mg/kg/day) was commenced and rapidly tapered to zero within three weeks. The renal function improved, and the patient was discharged with a creatinine of 107 micromol/l.
Conclusion:
This case illustrates that pharmacovigilance is important to early detect rare side effects, such as AIN, even in drugs with a favourable risk/benefit ratio such as moxifloxacin.
Insights
Moxifloxacin, an antibiotic, can rarely cause acute interstitial nephritis (AIN), a reversible kidney injury. Early detection through pharmacovigilance is crucial for managing this rare side effect.
Area of Science:
- Nephrology
- Pharmacology
- Internal Medicine
Background:
- Acute interstitial nephritis (AIN) is a significant cause of reversible acute kidney injury.
- Drug-induced AIN accounts for at least 70% of cases, primarily linked to penicillins and NSAIDs.
- Quinolones are infrequently associated with AIN, with prior reports mainly involving older fluoroquinolones.
Observation:
- A case of biopsy-proven AIN following moxifloxacin treatment is presented.
- The patient experienced fever, rigors, and acute kidney injury requiring dialysis shortly after moxifloxacin for a respiratory infection.
- Renal biopsy showed dense eosinophilic infiltrates and severe interstitial edema.
Findings:
- Moxifloxacin-induced acute interstitial nephritis.
- Successful treatment with oral prednisolone, leading to renal function recovery.
- Patient discharged with normalized creatinine levels (107 micromol/l).
Implications:
- Highlights the importance of pharmacovigilance in identifying rare adverse drug reactions.
- Moxifloxacin, despite a favorable risk/benefit profile, can precipitate AIN.
- Emphasizes the need for vigilance even with widely used medications.
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