Severe Acute Interstitial Nephritis Induced by α-glucosidase Inhibitor Miglitol in an Elderly Patient with Type 2
Kazutoshi Ono1, Takahiro Masuda1, Yuko Ono2,3
1Division of Nephrology, Department of Internal Medicine, Jichi Medical University, Japan.
Abstract:
A 79-year-old male patient with type 2 diabetic nephropathy and hypertension was admitted to our hospital because of acute kidney injury with significantly elevated serum creatinine (8.12 mg/dL) and urinary β2-microglobulin (β2MG, 31,748 μg/L) levels. α-glucosidase inhibitor (α-GI) miglitol, started two weeks prior to presentation, was discontinued because drug-induced acute interstitial nephritis (AIN) was suspected. Renal biopsy revealed AIN and diabetic nephropathy. The drug-induced lymphocyte stimulation test for miglitol was also positive. After the discontinuation of miglitol, the urinary β2MG levels decreased to the normal range. This case raises the possibility that α-GI miglitol can worsen the renal function in patients with underlying renal dysfunction.
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