[Study of the Immunological Stress Caused by Breast Surgery Methods]

To determine the role of immunosuppressive acidic protein(IAP)in the host defense of surgical patients, we investigated the kinetics of the post-operative elevation of IAP, as well as factors influencing the increase in serum IAP concentration, in 17 patients who underwent breast surgery. IAP was not increased in the pre-operation phase, post-operation phase, or 2 weeks after surgery, byvarious breast surgerymethods. In contrast, IL-6 was increased in the post-operation phase byall breast surgerymethods. IL-6 correlated with anesthesia time. These results suggest that breast surgical methods are less immunologicallyinvasive than other major surgery.