title: A role for anaphylactic sensitization in tumor control.
abstract: In order to evaluate the possible preventive role of an anaphylactic condition on tumor development, C57BL/6J mice were immunized or hyperimmunized by the intraperitoneal route with egg albumin in alum before the chemical induction of fibrosarcoma. Preimmunization using a protocol which elicits an optimal IgE response produced: (1) a significant reduction of tumor incidence; (2) an increase of survival time, and (3) a decrease of tumor growth rate in animals with higher IgE titers (greater than 640). On the other hand, hyperimmunized mice, which were suppressed in their anti-egg albumin IgE response, showed no changes in tumor incidence and survival time when compared to controls. Our results suggest a suppressive effect on tumor development related to the ability of the animal to mount an IgE response to antigens unrelated to the tumor.
mesh_terms: D000818:Animals; D007114:Immunization; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009374:Neoplasms, Experimental / Q000401:mortality / Q000517:prevention & control*; D010047:Ovalbumin / Q000276:immunology; D013997:Time Factors
chemical_list: D010047:Ovalbumin