关键词: 法医病理学, 过敏反应, 类胰蛋白酶类, 免疫球蛋白E, 大鼠

Abstract: Objective To explore the changes of serum IgE and tryptase caused by anaphylactic shock rats and discuss the relation to PMI and preservative environment of corpse and specimen. Methods Rats were used for establishing anaphylactic shock models and randomly divided into room temperature group, refrigeration group, frozen group, manual hemolysis group, specimen preservation group. And the control group was also established. The blood samples were collected after rats were sacrificed. The degree of hemolysis was graded according to the color of the upper layer of the serum. The mass concentration of IgE and tryptase in each group was detected by ELISA. Results The levels of serum IgE and tryptase in anaphylactic shock dead rats were higher than that of the control group. Room temperature and frozen made obviously differences on the levels of serum IgE and tryptase with various PMI. The levels of serum IgE and tryptase in refrigeration group showed relatively stable. The levels of serum tryptase and IgE were elevated with differently increasing hemolysis. The levels of serum IgE and tryptase showed no obvious changes during the specimen kept under different temperature conditions for 25 days. Conclusion Serum IgE and tryptase obviously increased in anaphylactic shock rats. However, the levels were influenced by PMI and environmental temperature, especially under the conditions of room temperature and frozen.

Key words: forensic pathology, anaphylaxis, tryptases, immunoglobulin E, rats