Metastin和MMP-2在子宫内膜癌组织中的表达和意义

目的探讨子宫内膜癌（endometrial carcinoma，EC）组织中Metastin和MMP-2蛋白的表达及临床意义。方法采用免疫组织化学方法检测47例EC组织中Metastin和MMP-2表达。结果在EC组织中Metastin表达阳性率为34．04％，它与EC的组织学分级、临床分期呈负相关；MMP-2在EC组织中阳性率为59．57％，它与EC的组织学分级、临床分期呈正相关（P〈0．05）。结论Metastin和MMP-2蛋白的表达是判断EC的恶性程度、预测肿瘤侵袭转移的重要参考指标；     

金属硫蛋白在三种女性肿瘤内表达的临床意义

Objective： To study the expressions and significations of metallothionein （MT） in cervical squamous cell cancer （CSC）, bladder transitional cell cancer （BTC） and breast cancer （BC） of woman. Methods： Immunohistochemical method was used to examine the expresses rate of MT in three types of woman cancer tissue. Results： The expressions rates of MT were 54.35% （29146） in BTC, 67.05% （59188） in BC and 57.14% （40/70） in CSC. The positive rate of MT expression was higher in low differentiation group than well differentiation group in BTC and CSC （P 〈 0.05）. Positive of MT in lobular cancer was significance higher than medullary and duct cancers （P 〈 0.05）. Conclusion： The expression of MT is related to differentiation degree, and it is a guidance for clinical choice of chemotherapy project.     

Dilated pore: a case report and an immunohistochemical study of cytokeratin expression

We report a 71-year-old Japanese female with a dilated pore in the form of a nodule above her right eyebrow. Histologic examination revealed a flask-shaped, keratinous cystic structure that was continuous with the surface epidermis and had numerous elongated rete ridges in the lower portion. An immunohistochemical study using a panel of monoclonal antibodies against cytokeratins (CKs) and involucrin detected CK1 and CK10 in the suprabasal cells of the cystic structure. CK8 and CK19 expression was observed in the outermost layer of some elongated rete ridges; it was composed of pallisading columnar cells. Most parts of the outermost layer of the cystic structure stained positively with AE1 antibody. From these immunohistochemical findings, we speculated that the dilated pore in our case was an isolated clinical entity is a follicular tumor differentiating mainly toward the infundibulum and partly toward the isthmus.     

Involvement of breast epithelial-stromal interactions in the regulation of protein tyrosine phosphatase-γ (PTPγ) mRNA expression by estrogenically active agents

Background. Protein tyrosine phosphatase (PTP) has been implicated as a tumor suppressor gene in kidney and lung cancers. Our previous results indicate that estradiol-17 (E₂)-induced suppression of PTP may play a role in mammary tumorigenesis. Zeranol (Z), a nonsteroidal growth promoter with estrogenic activity that is used by the US meat industry, induces estrogenic responses in primary cultured breast cells and breast cancer cell lines. Methods. PTP mRNA expression in human breast tissues and cells isolated from surgical specimens of mammoplasty and breast cancer patients were detected and quantified by RT-PCR. Immunohistochemical staining was used to localize PTP in human breast tissues. Breast epithelial and stromal cells were isolated and co-cultured to determine the involvement of cell–cell interaction in the regulation of PTP mRNA expression by E₂ and Z. Results. PTP mRNA expression was lower in cancerous than in normal breast tissues. Both E₂ and Z suppressed PTP mRNA levels in cultured normal breast tissues by 80%, but had a lesser effect in cultured epithelial cells isolated from normal breast tissues. In the co-culture system, both E₂ and Z suppressed PTP mRNA to a greater degree in epithelial cells than in stromal cells. In whole breast tissues, PTP was immunolocalized to the epithelium. Treatment with E₂ or Z diminished PTP staining indicating reductions in PTP at the protein level. Conclusions. The results indicate that both E₂ and Z regulate PTP expression in human breast and that epithelial–stromal cells interaction is important in the regulation of PTP expression by estrogenically active agents.     

肾上腺髓质素对大鼠局灶性脑缺血再灌注后脑组织的保护作用

目的探讨肾上腺髓质素与脑缺血再灌注损伤的关系。方法采用栓线法制成大鼠大脑中动脉缺血再灌注模型，阻断血流2h后进行再灌注。应用免痘组织化学染色法拴测不同时间段大鼠局灶性脑缺血再灌注后肾上腺髓质素的表达情况，并进行动态观察。结果正常大鼠脑内即有肾上腺髓质表达，假手术后肾上腺髓质素表达略有增加，但与正常对照组相比无明显差异，P〉0．05；大鼠脑缺血再灌注后肾上腺髓质素免疫阳性细胞增多，与正常对照组及假手术组相比差异显著，均P＜0．05；大鼠脑缺血再灌注后缺血侧既缺血对侧肾上腺髓质素免疫阳性知胞均增多，但以缺血侧区域增多最为明显，P〈0．05。动态观察发现，脑缺血再灌注2h后，肾上腺髓质素免痘阳性细胞即增多，缺血再灌注6h迭高峰，至1周左右仍明显增多。结论脑缺血再灌注后肾上腺髓质表达增强。     

Spatial visualisation and quantification of expression of cell specific markers — an application for chronic parathyroiditis cases

The aim of this work was to develop a simple and fast technique for spatial visualisation of colour cell specific markers in digital microscopy. Colour light microscopy images were transformed into their spatial representation by introducing image brightness as the third dimension. Based on spatial representation, the expression of selected colour specific markers was assessed by their surface, volume, area fraction and colour intensity. This technique was implemented for quantitative analysis of expression of PCNA, Ki67 and bcl-2 in chronic parathyroiditis cases. Comparing to standard, colour sampling techniques, the presented method based on spatial visualisation of the expression of markers in tissue sections, seems an effective and practical application in objective assessment of their distribution in the investigated material.     

HIF-1α和VEGF在非小细胞肺癌组织中的表达及其与肿瘤血管生成的关系

目的探讨缺氧诱导因子(HIF-1)与血管内皮生长因子(VEGF)在非小细胞肺癌(NSCLC)组织中的表达及与肿瘤血管生成的关系.方法免疫组化法检测NSCLC组织HIF-1α和VEGF的表达,并测定微血管密度(MVD).结果 NSCLC组织中HIF-1α及VEGF阳性表达率显著高于正常肺组织(P＜0.05);HIF-1α的表达与淋巴结转移及临床分期有关(P＜0.05),与肿瘤的大小和肿瘤的分化程度无明显关系(P＞0.005);VEGF在NSCLC组织中的表达与肿瘤的大小、淋巴结转移、肿瘤的分化程度及临床分期均密切相关(均P＜0.05);HIF-1α与VEGF、MVD,VEGF与MVD的表达之间均呈正相关(r分别为0.589、0.448、0.571,均P＜0.01).结论HIF-1 α及VEGF的增强表达与非小细胞肺癌的浸润性发展和肿瘤血管生成有密切关系.     

层粘连蛋白在食管鳞癌的表达及其与临床特征的关系

目的:探讨细胞外基质中层粘连蛋白(Laminin,LN)在食管鳞癌的表达情况与临床病理关系。方法:采用免疫组织化学SABC法对70例食管鳞癌原发灶进行了检测。结果:LN在食管鳞癌中的表达率为64.3%。中高分化组及淋巴结无转移组中LN表达明显强于低分化组及有转移组(P<0.05)。结论:基底膜中LN的分布和含量与肿瘤浸润转移有关,可作为评价食管鳞癌侵袭性及恶性程度的指标之一。     

去分化型脂肪肉瘤的临床病理--附2例报告及文献复习

目的探讨去分化型脂肪肉瘤的临床病理特点、诊断和鉴别诊断要点。方法报告2例发生于四肢软组织去分化型脂肪肉瘤患者的临床和病理资料,并复习相关文献。结果例1男,59岁,左上臂肿胀2个月余,无明显疼痛;例2女,62岁,右股部肿物1个月余。2例均予单纯肿瘤切除术,术后随访3个月和6个月,肿瘤无复发。病理检查见分化好的脂肪肉瘤和高度恶性非脂肪源性的肉瘤并存,分化好的区域含有脂肪瘤样、硬化性或者粘液样脂肪肉瘤成分,非脂肪源性肉瘤成分类似于恶性纤维组织细胞瘤,两者有明显的移行。免疫组织化学染色显示:瘤细胞S-100蛋白、CD34阳性,CD68、SMA、CD31、Actin阴性。结论去分化型脂肪肉瘤具有较高的复发率,易误诊为恶性纤维组织细胞瘤,其诊断主要依据组织病理学,外科手术切除是主要的治疗手段。     

食管癌p27基因表达及其临床意义

目的：研究食管癌中p27基因表达及其临床意义。方法：用免疫组化SP－plus方法检测32例正常食管组织和88例食管鳞癌中p27基因的表达。结果：食管鳞癌中P27蛋白表达阳性率为40.9%，而正常组织中为75.0%。P27蛋白表达与肿瘤组织分化、有无区域淋巴结转移相关，而与肿瘤长度、浸润深度、TNM分期不相关。P27蛋白阴性提示预后较差。结论；从蛋白水平证明p27基因表达缺失或表达水平的降低与食管癌的发生有关，P27蛋白表达的检测可能成为判断食管癌预后的参考指标之一。