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Open Access Case report

Acute interstitial nephritis induced by Dioscorea quinqueloba

Ha Yeon Kim1, Sung Sun Kim2, Soo Hyeon Bae3, Eun Hui Bae1, Seong Kwon Ma1 and Soo Wan Kim1*

Author Affiliations

1 Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju 501-757, Korea

2 Department of Pathology, Chonnam National University Medical School, Gwangju, Korea

3 Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea

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BMC Nephrology 2014, 15:143  doi:10.1186/1471-2369-15-143

Published: 3 September 2014

Abstract

Background

The use of herbal medicine may be a risk factor for the development of kidney injury, as it has been reported to cause various renal syndromes. Dioscorea quinqueloba is a medicinal herb that is used as an alternative therapy for cardiovascular disease and various medical conditions.

Case presentation

A 52-year-old man was admitted with complaints of skin rash and burning sensation. He had ingested a raw extract of D. quinqueloba as a traditional remedy. Laboratory tests revealed the following values: absolute eosinophil count, 900/mm3; serum creatinine level, 2.7 mg/dL; and blood urea nitrogen, 33.0 mg/dL. The immunoglobulin E level was markedly increased at 1320.0 IU/mL. Urinalysis revealed a fractional excretion of sodium of 3.77%, protein 1+, and blood 3+. Histological examination of the renal biopsy specimen showed a diffusely edematous interstitium with infiltrates composed of eosinophils, lymphocytes, and neutrophils.

Conclusion

Here, we present the first reported case of biopsy-proven acute interstitial nephritis following ingestion of D. quinqueloba associated with skin rash, eosinophilia, and increased plasma immunoglobulin E level.

Keywords:
Dioscorea quinqueloba; Acute interstitial nephritis