目的：探讨乳腺上皮-肌上皮性肿瘤（epithelial-myoepithelial tumor of breast）的临床病理学特点、免疫表型、诊断及鉴别诊断。方法：对4例乳腺上皮-肌上皮性肿瘤的临床特点、组织形态学及免疫组织化学结果进行分析,并复习相关文献。...目的：探讨乳腺上皮-肌上皮性肿瘤（epithelial-myoepithelial tumor of breast）的临床病理学特点、免疫表型、诊断及鉴别诊断。方法：对4例乳腺上皮-肌上皮性肿瘤的临床特点、组织形态学及免疫组织化学结果进行分析,并复习相关文献。结果：患者：男性1例,女性3例,平均年龄51岁（27~63岁）。4例肿瘤直径1.5~3.0 cm（平均2.0 cm）,无包膜,切面灰白色。显微镜下可见肿瘤由双相增生的肌上皮细胞和腺上皮细胞构成,肌上皮细胞环绕腺上皮细胞构成特征的套管结构。免疫组织化学染色,腺上皮细胞表达CK8/18、CK7,肌上皮细胞表达p63、Calponin、CK5/6。1例诊断为腺肌上皮瘤（adenomyoepithelioma,AME）,3例诊断为伴有癌的腺肌上皮瘤（恶性腺肌上皮瘤,malignant adenomyoepithelioma,MAME）。结论：乳腺上皮–肌上皮性肿瘤是少见的肿瘤类型,需与导管内乳头状瘤、化生性癌等鉴别。展开更多
Objective： To investigate the impact of dampness-heat （DH） on the development of mammary tumors in 7,12-dimethylbenz（a）anthracene （DMBA）-induced rats. Methods： Forty rats were randomly divided into 3 groups in...Objective： To investigate the impact of dampness-heat （DH） on the development of mammary tumors in 7,12-dimethylbenz（a）anthracene （DMBA）-induced rats. Methods： Forty rats were randomly divided into 3 groups in a randomized block design, including the control group （n=13）, DMBA group （n=14）, and DMBA plus DH group （n=13）. Rats in the DMBA group and DMBA plus DH group were intragastrically administrated with DMBA （100 mg/kg） for twice, once per week, while rats in the control group were treated with equivalent volumes of sesame oil. After DMBA administration, rats in the DMBA plus DH group were exposed to a simulated climate chamber with ambient temperature （33.0 ± 0.5 ℃） and humidity （90% ± 5%） for 8 weeks, 8 h per day. The body weight, time of tumor formation, and number of tumors were measured weekly to calculate tumor incidence, average latency period, average number of tumors, and average tumor weight. At the end of the experiment, the levels of matrix metalloproteinase 9 （MMP-9） and tissue inhibitor of metalloproteinases 1 （TIMP-1） in serum, and the contents of tumor necrosis factor- α （TNF- α ） and interleukin （IL）-1β in serum and tumor tissue were measured, respectively. Some tumor tissues were processed for hematoxylin-eosin staining to determine the histopathological changes. Results： Compared with DMBA, DMBA plus DH significantly increased the average number of tumors, average tumor weight, levels of serum MMP-9, TiMP-1, TNF- α and IL-1β, and contents of tumor tissue TNF- α and IL-1β （P〈0.05 or P〈0.01）. Conclusion： DH could accelerate the development of mammary tumors through increasing the expressions of MMP-9, TIMP-1, TNF- α and IL-1β in DMBA-induced rats.展开更多
基金Supported by the National Natural Science Foundation of China(No.81260523)
文摘Objective： To investigate the impact of dampness-heat （DH） on the development of mammary tumors in 7,12-dimethylbenz（a）anthracene （DMBA）-induced rats. Methods： Forty rats were randomly divided into 3 groups in a randomized block design, including the control group （n=13）, DMBA group （n=14）, and DMBA plus DH group （n=13）. Rats in the DMBA group and DMBA plus DH group were intragastrically administrated with DMBA （100 mg/kg） for twice, once per week, while rats in the control group were treated with equivalent volumes of sesame oil. After DMBA administration, rats in the DMBA plus DH group were exposed to a simulated climate chamber with ambient temperature （33.0 ± 0.5 ℃） and humidity （90% ± 5%） for 8 weeks, 8 h per day. The body weight, time of tumor formation, and number of tumors were measured weekly to calculate tumor incidence, average latency period, average number of tumors, and average tumor weight. At the end of the experiment, the levels of matrix metalloproteinase 9 （MMP-9） and tissue inhibitor of metalloproteinases 1 （TIMP-1） in serum, and the contents of tumor necrosis factor- α （TNF- α ） and interleukin （IL）-1β in serum and tumor tissue were measured, respectively. Some tumor tissues were processed for hematoxylin-eosin staining to determine the histopathological changes. Results： Compared with DMBA, DMBA plus DH significantly increased the average number of tumors, average tumor weight, levels of serum MMP-9, TiMP-1, TNF- α and IL-1β, and contents of tumor tissue TNF- α and IL-1β （P〈0.05 or P〈0.01）. Conclusion： DH could accelerate the development of mammary tumors through increasing the expressions of MMP-9, TIMP-1, TNF- α and IL-1β in DMBA-induced rats.
