Abstract
In order to ascertain a correlation between infiltration of Langerhans cells (LCs) or T-cells in tumor tissues and the intratumoral administration of a biological response modifier, Sizofiran (SPG) was analyzed in cancer of the uterine cervix. Cancer specimens of 45 patients with stage II-III invasive cervical cancers were analyzed. SPG was administered to the cervical tumor at high and low concentrations (Strong SPG and weak SPG) as well as by intramuscular injection twice a week. LC and T-cell infiltrations to tumor tissues of the uterine cervix were studied immunohistochemically and electron microscopically. Of 10 patients with systemic but no local immunization, 1 (10.0%) showed an increase in LC infiltration and 2 (20.0%) showed a decrease. Of 15 patients with strong SPG immunization, 2 (13%) showed an increase and 5 (33%) showed a decrease. In contrast, of 20 patients with weak SPG immunization, the incidence of increase in LC infiltration was 55% (11 patients), significantly greater than the above-mentioned groups and none showed a decrease. Of the 20 patients with weak SPG administration, 3 (15%) showed T-cell infiltration before SPG administration, and 12 (60%) showed an increase in T-cell infiltration after SPG was gi...Continue Reading
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