乳房外Paget病皮损中黏蛋白1和黏蛋白2的表达

目的 探讨黏蛋白1(MUC1)和黏蛋白2(MUC2)在乳房外Paget病(EMPD)中的表达情况.方法 生物素蛋白免疫组化法(SP法)检测19例EMPD皮损及19例美容切除术后正常皮肤组织上MUC1与MUC2的表达.结果 19例EMPD皮损常规HE染色显示,3例伴低分化腺癌,6例呈浸润性,10例为上皮内.MUC1在3例伴腺癌Paget病中有2例呈阳性表达,6例浸润性和10例上皮内Paget病均呈阳性表达.MUC2在3例伴腺癌Paget病和6例浸润性Paget病均呈阳性表达,在10例上皮内Paget病中有2例呈阳性表达.MUC1与MUC2在正常皮肤组织呈阴性表达.MUC1在上皮内Paget病中的表达显著高于伴腺癌Paget病和浸润性Paget病(P＜0.05).MUC2在伴腺癌Paget病和浸润性Paget病中的表达显著高于上皮内Paget病(P＜0.05).MUC1和MUC2的表达无明显相关性(r=-0.5,P＞0.05).结论 MUC1在EMPD中呈普遍表达,MUC2在伴有腺癌和浸润性EMPD中呈阳性表达.

Abstract：

Objective To study the expressions of mucin (MUC) 1 and 2 in extramammary Paget's disease(EMPD) lesions. Methods Tissue specimens were obtained from the lesions of 19 patients with EMPD and normal skin of 19 human controls during cosmetic surgery. Streptavidin-perosidase (SP) technique was used to detect the expressions of MUC1 and MUC2 in these specimens. Results As haematoxylin-eosin (HE) staining showed, 3 cases were accompanied by poorly differentiated adenocarcinoma, 6 were invasive Paget's disease and 10 were intraepithelial EMPD. MUC1 was expressed in 2 cases accompanied by poorly differentiated adenocarcinoma, and in all the cases of invasive and intraepithelial EMPD; MUC2 was observed in all the cases of adenocarcinoma-complicated EMPD and invasive EMPD, but only in 2 of 10 cases of intraepithelial EMPD.Neither MUC1 nor MUC2 was observed in normal control specimens. A significant increase was observed in the expression of MUC1 in lesions of intraepithelial EMPD compared with invasive EMPD and adenocarcinoma-complicated EMPD (both P ＜ 0.05), and in the expression of MUC2 in lesions of invasive EMPD and adenocarcinoma-complicated EMPD compared with intraepithelial EMPD (both P ＜ 0.05). The expression of MUC1 was uncorrelated to that of MUC2 (r= -0.5, P＞ 0.05). Conclusions MUC1 is generally expressed in the lesions of EMPD, while MUC2 is expressed in those of adenocarcinoma-complicated EMPD and invasive EMPD.

Expressions of mucin 1 and 2 in lesions of extramammary Paget's disease

Objective To study the expressions of mucin (MUC) 1 and 2 in extramammary Paget's disease(EMPD) lesions. Methods Tissue specimens were obtained from the lesions of 19 patients with EMPD and normal skin of 19 human controls during cosmetic surgery. Streptavidin-perosidase (SP) technique was used to detect the expressions of MUC1 and MUC2 in these specimens. Results As haematoxylin-eosin (HE) staining showed, 3 cases were accompanied by poorly differentiated adenocarcinoma, 6 were invasive Paget's disease and 10 were intraepithelial EMPD. MUC1 was expressed in 2 cases accompanied by poorly differentiated adenocarcinoma, and in all the cases of invasive and intraepithelial EMPD; MUC2 was observed in all the cases of adenocarcinoma-complicated EMPD and invasive EMPD, but only in 2 of 10 cases of intraepithelial EMPD.Neither MUC1 nor MUC2 was observed in normal control specimens. A significant increase was observed in the expression of MUC1 in lesions of intraepithelial EMPD compared with invasive EMPD and adenocarcinoma-complicated EMPD (both P ＜ 0.05), and in the expression of MUC2 in lesions of invasive EMPD and adenocarcinoma-complicated EMPD compared with intraepithelial EMPD (both P ＜ 0.05). The expression of MUC1 was uncorrelated to that of MUC2 (r= -0.5, P＞ 0.05). Conclusions MUC1 is generally expressed in the lesions of EMPD, while MUC2 is expressed in those of adenocarcinoma-complicated EMPD and invasive EMPD.