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Objective To investigate the relationship of obesity and vascular endothelial growth factor (VEGF)and the clinicopathological characteristics and prognosis of breast cancer.Methods From Jan.2013 to Dec.2015,147 breast cancer patients were treated at the Department of Breast Surgery in Jiangsu University Affiliated People's Hospital.The clinical factors such as BMI,clinicopathological data and survival prognosis were collected.The chi-square test was used to analyze the association between factors and obesity.Log-rank test and COX regression analysis were performed to make univariate and multivariate analysis.The Oncomine and Kaplan Meier plotter were employed to assess the expression of VEGF in breast cancer and its association with survival prognosis of breast cancer patients.Results The median follow-up time was 40 (ranging from 12 to 58) months.Obesity was associated with tumor size(x2=11.009,P=0.001),and there was no significant correlation between axillary lymph node status,hormone receptor and Her-2 expression.The results of single factor analysis suggested that obesity and axillary lymph node status significantly affected the breast cancer patients OS (P=0.035,P=0.038)and RFS (P=0.035,P=0.036)).Cox multivariate regression analysis results suggested that obesity could be considered as an independent prognostic factor of breast cancer:P=0.051,HR=3.849 (95％ CI:0.995-14.895);Oncomine database analysis found that VEGF was relatively high in breast cancer tissue compared to that in adjacent tissues.Kaplan Meier plotter analysis results showed better overall survival (OS)and recurrence free survival (RFS)in patients with low expression of VEGF in breast cancer tissues.Conclusions Obesity is an adverse prognostic factor in breast cancer patients,and may be associated with elevated VEGF.Weight control may improve the prognosis of breast cancer patients.
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Objective To study the effects of midkine(MK)gene small interfering RNA(siRNA)on adhesion and invasion of human breast cancer cells.Methods Real time PCR was used to evaluate MK mRNA expression in 7 human breast cancer cell lines Bcap-37,LCCI,MCF-7,MDA-MB-231,MDA-MB-435,MDA-MB-468,and ZR75-1.The cell line in which MK expression was the highest was transfected with different doses of MK siRNA.The expression of MK mRNA and protein was determined by real-time quantitative PCR and immunoflurescence staining.The cell adhesion was evaluated by MTT assay and invasion was examined by Boyden chamber method.Results Cell line MCF-7 expressed the highestlevel of MK mRNA in the 7 tested breast cancer cell lines.After being transfected with MK siRNA,MK mRNA and protein level of MCF-7 decreased in timeand dose-dependent manners.The adhesive and invasive ability of MCF-7 cell transfected with MK siRNA decreased in a dose dependent manner(P<0.01,P<0.01).Conclusions MK gene might play an important role in adhesion and invasion of human breast cancer cells.siRNA transfection could effectively inhibit adhesion,migration,and invasion of human breast cancer cell.
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ObjectiveTo study the effects of tumor-associated calcium signal transducer-2 (TROP-2) gene small interfering RNA(siRNA) on adhesion and invasion of human breast cancer cell. MethodsReal time PCR was used to evaluate the TROP-2 mRNA of seven human breast cancer cell lines Bcap-37 ,LCC1 ,MCF-7 ,MDA-MB-231,MDA-MB-435, MDA-MB-468 ,and ZR75-1. The cell line of TROP-2 highest expression was transfected with different dose of TROP-2 siRNA. The expression of TROP-2 mRNA and protein were determined by Real-time quantitative PCR and immumoflurescence method. The cell adhesion was evaluated by MTT assay,and invasion was exmined by hoyden chamber,respectively. Results Cell line MCF-7 showed the highest elevation of TROP-2 mRNA in seven breast cancer cell lines. The results from real-time quantitative PCR and immumoflurescence method showed that TROP-2 mRNA and protein reduced in time-and dose-dependent manners( P ＜ 0.01 ;P ＜ 0.01 ). The adhesive rate of siRNA groups(5 nM,10 nM,and 20 nM)was(52.9 +2.5)％ ,(25.6 ±2.3)％, ( 12.8 +2.2)％ (P ＜0.01 ) ,respectively.The transwell results showed that the invasion cells was(78 ± 17), (39 ± 15), ( 19 ± 16), ( 136 +25 ) and( 139 ±21 )in different groups(5,10,20 nM siRNA,and controls) ,respectively(P ＜0.01). ConclusionTROP-2 gene might play an important role in adhesion and invasion of human breast cancer cell. siRNA targeted TROP-2 could effectively inhibit adhesion and invasion of human breast cancer cell.
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ObjectiveTo study the scope of excison in breast-conserving surgery for breast carcinoma.MethodsClinical data of 275 breast cancer patients undergoing breast-conserving surgery in t he First Affiliated Hospital of Nanjing Medical University,the Affiliated Zhenjiang Hospital of Jiangsu University and Changzhou Traditional ChineseMedicine Hospital were retrospectively analyzed.The operation procedure and postoperative adjuvant therapy were carried out with the same protocol.Local and general conditions of patients were followed up regularly.Results271 out of 275 patients got follow-up.The follow-up rate was 98.5％.The follow-up time ranged from 1 month to 117 months,median follow-up time was 34 months.Six patients died of distant metastasis,2 with local recurrence.The 1-year,3-year,and 5-year overall survival rates were 99.5％,98.1％,and 95.7％,respectively.ConclusionsIt is safe to excise 1 cm normal breast tissue with clear margin confirmed by frozen section,followed by postoperative adjuvant therapy,endocrine therapy,and radiotherapy,this improves the life quality of patients with breast cancer.It is safe and effective to determine whether the disease is multicentric or multifocal by mammogram plus clinical breast examination.
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Objective To discuss how to determine the operative margin in breast-conserving surgery in patient with early-stage breast cancer. Methods The breast-conserving surgery was performed on 111 patients with early-stage breast cancer who met the indication of breast-conserving. The operative incision was performed on normal breast tissue 1cm from the tumour edge and then the frozen sections of the surgical margin tissue were done to confirm that tumour was completely excised. The individualized therapy was performed according to pathologic examination and clinical stage. All patients were followed up regularly. Results 111 patients with early stage breast cancer received breast-conserving surgery and all had good curative effect except one patient had a local recurrence during the follow-up. Conclusions Operative incision on normal breast tissue 1cm from the tumour edge and frozen section of the surgical margin tissue are two crucial procedures to ensure the success of breast-conserving surgery and increase the life quality of patient with breast cancer.
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Objective To investigate the clinical singnificance of metalloproteinase(TIMP) 1 expression in human breast cancer.Methods The expression of TIMP 1 in paraffin embedded breast carcinoma specimens from 48 patients with primary invasive breast cancer who had undergone radical mastectomy or modified radical mastectomy from January of 1990 to Dcecember of 1996 were detected by the standard streptavidin biotin peroxides method,and its correlation to clinicopathologic featurea was analyzed. Ruslts Among 48 cases,the positive expression rate of TIMP 1 was 29%, TIMP 1 expression were higher in patients with higher histological grades than in those with lower ( P