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Myoglobin에 의한 급성 신부전에서 Oxygen Free Radical의 역할
김주섭 ( Joo Seop Kim ),정대윤 ( Dae Yune Jung ),김장만 ( Jang Man Kim ),조홍래 ( Hong Rae Cho ),배수동 ( Soo Tong Pai ),강구 ( Gu Kang ),신형식 ( Hyung Sik Shin ) 대한외상학회 1991 大韓外傷學會誌 Vol.4 No.2
Highly reactive oxygen metabolites have been known to have a role in several models of acute renal failure. Especially hydroxyl radicals have been proved to be important mediators by some previous authors. This study was aimed to determine the role of superoxide radical as well as hydroxyl radical and to compare the protective effects of both scavengers in myoglobinuric renal failure. Acute renal failure was induced by intramuscular injection of hypertonic glycerol (6mg/kg, half-dose in each hindlimb muscles) in rats. Rats treated with glycerol and hydroxyl radical scavenger, dimethylsulfoxide (DMSO), showed lower serum blood urea nitrogen (BUN) and creatinine level than rats with glycerol alone. And also significant protection was noticed histologically. Superoxide radical scavenger, superoxide dismutase (SOD), had a similar protective effects. In contrast, allopurinol, an inhibitor of xanthine oxidase, was not protective at all. The present study may suggest that both superoxide and hydoxyl radical playa role of tissue injury in myoglobin-induced renal failure. Beside xanthine oxidase, other souces of oxygen free radical may exist.