In order to study the changes of main oxidase and antioxidase in the pathological scars,the tissues of hypertrophic scar(10 cases),keloid(10 cases)and normal skin(8 cases)were obtained.The concentration of malonaldehyde(MDA)and the activities of xanthine oxidase(XO),copper,zinc-superoxide dismutase(CuZn-SOD),catalase(CAT)as well as glutathione peroxidase(GPX)were detected by spectrophotometric method.Compared with normal skin tissues,the concentration of malonaldehyde and xanthine oxidase activity were significantly higer in pathological scars(P
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