肥大细胞在良性前列腺增生和前列腺腺癌组织的分布及生物学意义

目的　研究良性前列腺增生和前列腺腺癌组织中肥大细胞分布及其生物学意义。方法　以肥大细胞特异的类胰蛋白酶作为标记蛋白 ,采用免疫组织化学染色法观察前列腺增生和前列腺腺癌组织内肥大细胞的分布。结果　良性前列腺增生组织肥大细胞平均数与合并有炎症的良性前列腺增生组织肥大细胞平均数差异无统计学意义 (P>0 .0 5 )。前列腺癌区肥大细胞数量明显少于前列腺癌旁间质 (P<0 .0 5 )。分化程度不同的前列腺癌旁间质的肥大细胞数量不同 (P<0 .0 5 )。结论　前列腺癌组织肥大细胞数量分布的差异提示肥大细胞可能参与机体抗肿瘤反应

The Distribution of Mast Cells in Benign and Malignant Prostate Lesions and Its Biologic Significance

Objective To study the distribution profile of mast cells in benign and malignant prostate lesions and its biologic significance. Methods Fifty-three prostate specimens collected from 2000 through 2002 were examined, and the distribution of mast cells were analyzed. The paraffin sections were stained with anti-human mast cell tryptase immunohistologically. The numbers of cells stained with positive results in ten high-power fields were counted, and the mean was calculated. Results No significant relationship of mast cell distribution to inflammation in benign prostatic hyperplasias was observed. Significant differences between the mean mast cell numbers of intratumoral region and those of peritumoral region were noted (P<0.05). There was statistically significant difference in the mean mast cell numbers between well-differentiated groups and poorly-differentiated groups (P>0.05). Conclusion There exists a relationship between prostate carcinoma tissue and mast cells. Mast cells may inhabit the tumor cells by different pathways.