[The clinical meaning and determination of the superoxid dismutase activity and malondialehyde content in the serum of the patients suffering from chronic tonsillitis].

The activity of SOD and MDA content in the serum of patients suffering from chronic tonsillitis were determined one day before operation and one week after of operation. It was found that the activity of T-SOD Mn-SOD and CuZn-SOD were decreased in the serum of patients with chronic tonsillitis than that in the normal control group with statistical significance (P < 0.01). T-SOD activity was increased and MDA content was decreased significantly after operation than the time before operation (P < 0.001, P < 0.01). This study indicates that tonsil excision could decrease MDA content and increased SOD activity for the chronic tonsillitis patient.