Korean J Vet Res > Volume 54(1); 2014 > Article
Korean Journal of Veterinary Research 2014;54(1):31-38.
DOI: https://doi.org/10.14405/kjvr.2014.54.1.31    Published online March 25, 2014.
Effect of repeated Paecilomyces japonica treatment on rats
Yong-Bum Kim1, Da-Hae Hong2, Eun-Sang Cho2, Wanjung Im1, Il-Hwan Kim3, Hwa-Young Son2
1Korea Institute of Toxicology
2College of Veterinary Medicine, Chungnam National University
3DAEWOONG Pharmaceutical Co.
Paecilomyces japonica의 반복투여가 랫드에 미치는 영향
김용범1, 홍다해2, 조은상2, 임완중1, 김일환3, 손화영2
2충남대학교 수의과대학
Cordyceps is a fungus used as a traditional medicine in China, Japan, and Korea. Paecilomyces (P.) japonica is a new cordyceps that was recently cultivated on silkworm pupae in Korea. The present study evaluated the toxicological effects of P. japonica in rats. Forty rats were treated with oral doses of P. japonica (0, 20, 100, or 500 mg/kg/day) for 4 weeks. Twenty additional rats were treated with 0 or 500 mg/kg/day of P. japonica for 4 weeks and then maintained for 2 weeks without treatment. Clinical signs, body weight, food and water consumption, and organ weight as well as hematology, serum biochemistry, and histopathology data were examined. Body weight gain of the group treated with 500 mg/kg/day was significantly reduced. Microscopically, karyomegaly, single cell necrosis, and mitosis were observed in the renal tubular epithelium of all treated groups. In conclusion, P. japonica caused a reduction of body weight and renal injury in rats. The no observed adverse effect level (NOAEL) of P. japonica was less than 20 mg/kg/day.
Key Words: body weight, karyomegaly, Paecilomyces japonica, rat, renal toxicity

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