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1.
In order to identify the prognostic factors that significantly influence the disease-free survival rate after surgical resection of primary breast cancers, we determined tumour and lymph node grades, and immunohistochemical staining for estrogen and progesterone receptors (ER and PR), c-erbB-2, p53, bcl-2, bax and PCNA in 76 patients. Univariate analysis showed that increased grade of tumour and lymph nodes, negative immunostaining for ER, positive immunostaining for c-erbB-2, and a high PCNA index (> or = 30%) negatively influenced the disease-free survival rate, but PR, p53, bcl-2 and bax had no predictive value. Although p53 was not an independent prognostic factor by itself, the combination of p53, bcl-2, and bax proved to correlate with the disease-free survival, with the best prognosis noted in tumours negative for p53 and positive for both bcl-2 and bax, intermediate prognosis in tumours negative for p53 and positive for either bcl-2 or bax and worst prognosis in tumors negative for p53 as well as bcl-2 and bax. Tumour grade correlated positively with PCNA index, while positive staining for ER correlated negatively with tumour grade as well as with PCNA index, although this was statistically insignificant. Immunostaining of breast cancers for bcl-2 correlated negatively with tumour grade and PCNA index. Immunostaining for c-erbB-2 correlated positively with PCNA but not with tumour grade. Immunostaining for p53 tended to correlate positively with PCNA, but not with tumour grade. Immunostaining for PR and bax did not correlate with tumour grade and PCNA index. These results suggest that in addition to tumour size and lymph node involvement, immunostaining for ER, c-erbB-2, and a high PCNA index are important prognostic factors in human breast cancer. Wild-type p53 with preserved bcl-2 and bax gene products is also a favorable prognostic factor indicating breast cancer at an early stage of cancer progression.  相似文献   

2.
目的:检测脑胶质瘤组织中胞质多聚腺苷酸化成分结合蛋白1(CPEB1)、细胞周期蛋白B2(CCNB2)的表达,分析CPEB1、CCNB2表达与脑胶质瘤患者临床病理特征以及预后的关系。方法:选取2016年1月至2018年1月东莞松山湖中心医院神经外科收治的经手术切除的55例脑胶质瘤患者瘤组织标本(脑胶质瘤组)和50例颅脑损伤患者额叶或颞叶组织标本(对照组)。检测CPEB1、CCNB2表达,分析CPEB1、CCNB2表达与脑胶质瘤患者临床病理特征的关系。结合随访资料,采用Kaplan-Meier生存分析CPEB1、CCNB2阳性/阴性表达脑胶质瘤患者的预后差异及采用Cox比例风险回归分析其预后的影响因素。结果:脑胶质瘤组CPEB1、CCNB2阳性表达率均高于对照组(P<0.05)。肿瘤直径>2 cm、WHO分级Ⅲ级及远处转移的患者CCNB2阳性表达率高于肿瘤直径≤2 cm、WHO分级Ⅰ~Ⅱ级及无远处转移的患者(P<0.05);WHO分级Ⅲ级、远处转移患者的CPEB1阳性表达率高于WHO分级Ⅰ~Ⅱ级、无远处转移的患者(P<0.05)。CPEB1、CCNB2阳性表达患者3年生存率低于CPEB1、CCNB2阴性表达患者(P<0.05)。WHO分级Ⅲ级、CPEB1及CCNB2阳性表达是脑胶质瘤患者术后3年死亡的危险因素(P<0.05)。结论:脑胶质瘤组织中CPEB1、CCNB2的阳性表达率均升高,其与脑胶质瘤恶性生物学行为以及不良预后有关。  相似文献   

3.
Feulgen-stained imprints and smears from 730 cases of invasive breast cancer were investigated using an image analysis system. From each tumor sample 100 cells were randomly scanned and several DNA and morphometrical parameters evaluated. Their prognostic value for a prediction of distant metastases within 5 years was investigated with the multivariate Cox regression analysis, which was performed for all consecutive cases, as well as for node-negative and node-positive patients separately. The multivariate analyses showed a strong prognostic value of the anisonucleosis (variation of nuclear radius) and the DNA histogram type in addition to the nodal status, the tumor size (pT), and the histological tumor grade. However, performing this analysis for both node-positive patients and for those without lymph node metastases demonstrated a different prognostic meaning of the variables. The combination of each of the group-specific variables led to a prognostic factor, which allowed an assignment of patients to several subgroups with significantly different risk for distant metastases. Thus, both a low-risk group of node-negative patients with a 5-year distant recurrence rate of only 5.8%, and a higher risk group of node-negative patients with a recurrence rate of 38.6% could be identified. Among the node-positive patients, a low-risk group with a distant recurrence rate of 8.6%, and also a high risk group with 69% distant recurrence, could be identified.  相似文献   

4.
5.

Background

Breast carcinoma is a disease with a tremendous heterogeneity in its clinical behavior. Newer prognostic factors and predictors of response to therapy are needed. The aim of this study was to evaluate the expression of HER-2, estrogen receptor (ER) and progesterone receptors (PR) in breast carcinoma and to compare it with other prognostic parameters such as histological type and grade, tumor size, patients' age, and lymph node metastases.

Patients and methods

This is a retrospective study conducted in the department of pathology at Sfax University Hospital. Confirmed 155 Cases of breast carcinoma were reviewed in the period between January 2000 and December 2004. We used immunohistochemistry to evaluate the expression of HER-2, ER, and PR receptor and Chi-square and Fisher exact test to correlate immunohistochemical findings with prognostic parameters for breast carcinoma such as patients' age, tumor size, histological type, histological grade and lymph node status.

Results

The mean age of patients was 51.5 years, ranging from 22 to 89 years. 80 (51.6%) of the patients were below 50 years. The percentage of expression of HER-2, ER and PR was 26, 59.4, and 52.3%, respectively. HER-2 was over-expressed (3+) in 18.1% of the cases, was inversely related to ER expression (p = 0.00) and to PR expression (p = 0.048). This over-expression was also associated with a high tumor grade with marginal significance (p = 0.072). A negative correlation was noted between ER and PR expression and SBR grade (p = 0.000) and ER and age (p = 0.002).

Conclusion

HER-2 over-expression was observed in 18.1% of Tunisian breast carcinoma affecting female patients. This group presents apparently an aggressive form of breast carcinoma with high histological grade and negative ER.  相似文献   

6.
In order to evaluate the influence of hormone dependence on the features of infiltrating ductal carcinoma of the breast we have assayed the cytosolic levels of estrogen receptor (ER), progesterone receptor (PR), pS2 and cathepsin D in 53 women aged over 70 years and in 95 women aged between 55 and 70 years. Tumor size, axillary involvement, distant metastasis, histological grade, ploidy and S-phase were taken into account. Carcinomas of women aged over 70 did not show higher concentrations or higher positive results for ER and PR than those of women in the 55-70-year age group. In older patients, negativity for ER was associated only with higher S-phase fraction, while negativity for PR was not associated with any of the parameters analyzed. In the younger subgroup, negativity for ER was associated with larger tumor size, higher S-phase fraction, lymph node involvement, histological grade 3 and lower pS2 values. Negativity for PR was associated with the same parameters, as well as with a higher frequency of recurrence. Our results suggest a reduced influence of hormone dependence on the clinicopathological features of breast carcinomas in patients older than 70 years compared with women aged between 55 and 70 years.  相似文献   

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8.
A pilot study on relationships of selected molecular factors [erbB-1, erbB-2, erbB-3, and c-myc oncogene average gene copy numbers (AGCN); steroid receptors and pS2 gene expression; tumor cells' DNA values] to the ex vivo chemosensitivity of ovarian cancer in a modified adenosine triphosphate cell viability chemosensitivity assay (ATP-CVA), was performed. Despite the relatively small number of patients, numerous correlations among the factors tested were found. Nevertheless, only c-myc gene dosage positively affected ex vivo chemosensitivity of tumors tested.  相似文献   

9.
利用免疫组织化学方法检测了乳腺癌CEA与p53和nm23-H1蛋白的表达,对其相关性进行了研究,同时与其它病理指标亦进行了比较。结果:82 例乳腺癌中,CEA阳性67例(82%),与p53蛋白的表达呈显的负相关(P<0.05),而与nm23-H1蛋白的表达则呈显的正相关(P<0.05);同时,CEA的表达与肿瘤的病理分级和体积显相关(P<0.05),即分级越高或肿瘤越大,CEA阳性表达率越低;而与患年龄、淋巴结转移和肿瘤坏死程度无关(P>0.05)。综合分析推测:CEA可能是乳腺癌一种高分化肿瘤标志,并与肿瘤的浸润转移潜能有一定的关系,与其它指标联合应用在判断乳腺癌预后有一定的价值。  相似文献   

10.
R Goldman  R B Levy  E Peles  Y Yarden 《Biochemistry》1990,29(50):11024-11028
The erbB-1 and erbB-2 protooncogenes encode homologous membrane receptors that respectively bind epidermal growth factor (EGF) and a still incompletely characterized ligand. Binding of EGF to its receptor is known to increase tyrosine phosphorylation of the erbB-2/neu receptor in tumor cells. To investigate the mechanism of this transregulatory pathway, we analyzed the interactions between the two receptors in SKBR-3 human breast carcinoma cells. Chemical cross-linking of 125I-labeled EGF revealed that the radiolabeled EGF receptor coimmunoprecipitates with the erbB-2/neu receptor. In addition a cross-linked species of 360-kdalton molecular mass is also coimmunoprecipitated. The formation of the latter species is absolutely dependent on the presence of EGF receptor and thus appears to represent a heterodimer of the erbB-1 and erbB-2 receptors. In vitro kinase reaction assays revealed that receptor heterodimerization is induced by EGF binding and leads to a dramatic increase in the self-phosphorylation capacity of the dimerized receptors. Moreover, analysis of living SKBR-3 cells suggested that most of the EGF-induced transregulation of the erbB-2/neu receptor is due to receptor heterodimerization. In conclusion, heterodimers of erbB-1 and erbB-2 receptors may provide a mechanism for dual transductory functions of growth factors of breast tumor cells.  相似文献   

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