Objective To detect the expressions of CK5/6 and Ki-67 in breast cancer， and explore the clinical significance. Methods The expressions of CK5/6 and Ki-67 were detected by immunohistochemistry in 162 cases of breast cancer . The correlation between CK5/6 expression and Ki-67 expression and the relationship of the expressions of two factors to the clinicopathologic factors were analyzed. Results There were 12 cases of the triple negative breast cancer 〔negative estrogen receptor （ER）， negative progesterone receptor （PR）， and negative Her-2〕 in 162 patients with breast cancer. The positive rates of CK5/6 and Ki-67 in the breast cancer tissues were 30.9% （50/162） and 65.4% （106/162），respectively. The positive rates of CK5/6 and Ki-67 in the patients with triple negative breast cancer were significantly higher than those of non-triple negative breast cancer 〔CK5/6：75.0% （9/12） versus 27.3% （41/150）， χ2=11.837， P=0.001；Ki-67：100% （12/12） versus 62.7% （94/150）， χ2=6.847， P=0.009〕. The expressions of CK5/6 and Ki-67 in the breast cancer tissues were not associated with age （P＞0.05）， but they were associated with histology grade （P＜0.05）. The expression of CK5/6 wasn’t associated with tumor size and lymph node status （P＞0.05）， but the expression of Ki-67 was associated with them （P＜0.05）. The expression of CK5/6 in the breast cancer tissue had a positive correlation with the expression of Ki-67 in the breast cancer tissue （rs=0.271， P=0.000）. There were 64 cases when the expression of Ki-67 was （＋＋） and （＋＋＋）， the positive rate of CK5/6 was 43.8% （28/64） and it was significantly higher than that when the expression of Ki-67 was （-） and （＋） 〔22.4% （22/98）， χ2=8.233， P=0.004〕. The positive expressions of CK5/6 and Ki-67 in the breast cancer tissues were negatively correlated with the expressions of ER and PR （CK5/6 and ER：rs=-0.446， P=0.000；CK5/6 and PR：rs=-0.370， P=0.000；Ki-67 and ER：rs=-0.518， P=0.000；Ki-67 and PR：rs=-0.515， P=0.000）. The positive expressions of CK5/6 and Ki-67 in the breast cancer tissue were not correlated with the Her-2 expression （CK5/6 and Her-2：rs=0.105， P=0.183；Ki-67 and Her-2：rs=0.068， P=0.393）. Conclusion The expressions of CK5/6 and Ki67 not only can evaluate the basic rules of breast cancer from origin and development， but also they are beneficial to choose the chemotherapy of different patients.
Objective To observe the outcomes of using different concentrations of arsenic trioxide at varying phases on the breast cancer cell line MCF-7 and to study the mechanism of this effect. Methods The effect of arsenic trioxide on the growth of breast cancer cell line MCF-7 was observed after applying arsenic trioxide of different concentrations （0.5-16 μmol/Ｌ）. The inhibitory effect of arsenic trioxide on the cell proliferation was investigated with 3-(4，5-dimethyl-thizazol-2-yl)-2， 5-diphenyl tetrazolium bromide (MTT) and the induction of arsenic trioxide on cell apoptosis was detected by DNA ladder and terminal deoxynucleotidyl transferase mediated nick end labeling (TUNEL). Results The effect of arsenic trioxide on breast cancer cell line MCF-7 depended on the phase and the dose. The number of cell decreased significantly and there were conspicuously typical morphological changes of apoptosis after the use of arsenic trioxide， including membrane blebbing， chromatin pyknosis, nuclear fragmentation and the formation of apoptotic body. The typical DNA ladders were observed in the MCF-7 cells after 48 h administration of arsenic trioxide at concentrations 1-8 μmol/Ｌ. Significant elevations of apoptosis index at 24 h, 48 h and 72 h were all detected by TUNEL after incubating with 4 μmol/L arsenic trioxide. Conclusion Arsenic trioxide may inhibit the growth of breast cancer cell line MCF-7 significantly by inducing the apoptosis of breast cancer cell.
ObjectiveTo understand the function of trace element and amino acids detection in early diagnosis of breast cancer, and explore the correlation between plasma amino acid and trace element changes. MethodsFifty-five patients with breast cancer and 50 normal controls were included in our study from May 2012 to June 2013. Trace elements were detected by atomic absorption spectrophotometer, and the level of amino acids was detected by Hitachi L-8900 amino acids analyzer. Then, we analyzed the correlation between the two indexes. ResultsCompared with the normal controls, breast cancer patients had a higher level of Cu and Fe (P<0.05), and a lower level of Zn (P<0.05). Seven kinds of amino acids had significant changes (P<0.05), including three kinds of increased amino acids, and four reduced. Amino acids and trace element correlation analysis showed that Mg was negatively correlated with Leu, Tyr, Lys, and His; and Ca was negatively correlated with Lys and His. ConclusionThere are many kinds of changes of plasma amino acids and trace elements in breast cancer patients. Serum trace element and amino acids detection in patients with breast cancer are helpful in the severity judgment and regimen design.
Objective To investigate the expression of ADAM9 in breast cancer and its clinical significance. Methods The expressions of ADAM9 in normal breast tissues and breast cancer tissues were detected by reverse transcription polymerase chain reaction (RT-PCR) and immunohistochemistry, and whose relationship with clinicopathologic features was analyzed. Results The expression of ADAM9 mRNA increased in the breast cancer tissues, but which was not detected in the normal breast tissues. The expression of ADAM9 protein in the breast cancer tissues was significantly higher than that in the normal breast tissues (Plt;0.05), and which in the metastatic lymph nodes was significantly higher than that in the negative lymph nodes or corresponding primary lesions (Plt;0.05). The expression of ADAM9 in the breast cancer tissues was correlated with the lymph node metastasis and histological grade (Plt;0.05). Conclusion ADAM9 is overexpressed in the breast cancer tissues, which might involve in the pathological progression of breast cancer.
ObjectiveTo introduce the current status of clinical application, value and perspective of fiberoptic ductoscopy.MethodsThe related literatures on advances in clinical application of fiberoptic ductoscopy were reviewed.ResultsFiberoptic ductoscopy is now widely used in breast diseases, especially complicated with nipple discharge, and it has a higher accuracy rate than routine examinations. With ductoscopy, ductal lavage,location, biopsy and treatment can be carried out.ConclusionFiberoptic ductoscopy has a greater value in diagnosis and treatment, we believe it will be better applied and further developed.
【Abstract】 Objective To discuss the aesthetic effect and appl ication of refined incisions in breast reconstructionfor breast cancer patients by the transverse rectus abdominis myocutaneous (TRAM) flap. Methods From January 2001 toOctober 2006, 77 cases with breast cancer were treated with TRAM flap to immediate breast recontruction. The patients were all femals, with an average age of 45 years (ranging from 26 years to 53 years). There were 39 cases of left breast and 38 cases of right breast. The disease course was from 1 day to 180 days. There were 11 cases of stage I , 60 cases of stage II and 6 cases of stage III, among which 34 cases were located in the upper outer quadrant, 15 in the lower outer quadrant, 22 in the upper inner quadrant and 6 in the lower inner quadrant. The size of tumors varied from 1 cm to 4 cm. As to the pathologic type, 60 cases were invasive ductal cancers, 12 ductal cancers in situ, 5 invasive lobular cancers; positive lymph node (number: 1-7) happened in 29 cases, while negative lymph node happened in 48 cases. Among the 77 cases, regular shuttle incisions were performed in 35 cases, and refined circle incisions were performed in 42 cases, which were 2 cm away from the breast tumor border. Axillary incision was necessary for the breast tumors located in upper inner, lower inner and upper outer quadrants in order to perform axillary mastectomy. Ten cases were ni pple-areola sparing. The shape, symmetry and incision scar of the reconstructed breast were evaluated and graded. Results There were 6 cases out of 77 cases of breast reconstruction in which partial necrosis happened and the necrosis rate was 7.79%. The time of follow-up was from 13 months to72 months, with an average of 39 months. No recurrence or matastasis happened in 76 cases, and distant metastasis happened only in 1 case. There were 40 cases out of 42 cases with refined incisions which were scored more than 3, and the satisfaction rate was 95.24%. There were 31 cases out of 35 cases with regular incisions which were scored more than 3, and the satisfaction rate was 88.57%. Conclusion The reasonable refined incision based on the location of the tumor is effective to improve the satisfaction rate for the shape of the reconstructed breast.
ObjectiveTo summarize the research status and biological characteristics of stromal fibroblast in breast cancer. MethodsRelevant literatures about the breast cancer stromal fibroblasts published recently were collected and reviewed. ResultsIn addition to cancer cells, breast cancer included stromal cells. The fibroblasts were the major components of breast cancer stromal, which had significantly different biological characteristics from normal fibroblasts. The fibroblasts were characterized by α-SMA positive, p53 gene mutation, secretion of various cytokines or chemokines in addition to the production of collagen substances, involving in breast cancer growth, migration, invasion and metastasis through a variety of signaling pathways. ConclusionThe biological characteristics of stromal fibroblasts in breast cancer may reflect lesion properties, be of great importance to diagnosis and differential diagnosis and prognosis prediction of breast cancer. More attentions will be paid to the target therapy for stromal fibroblasts in breast cancer.
Objective To summarize the advancement of breast cancer stem cells and genotyping and analyze the correlation between the two. Methods Relevant literatures about breast cancer stem cells and genotyping, which were published recently were collected and reviewed. Results Cancer stem cell origin theory was supported by researches of correlation between breast cancer stem cells and genotyping, which also explained the complexity of intrinsic subtypes and heterogeneity of breast cancer. Conclusions A new way can be detected to study the formation mechanism and biological characteristics of breast cancer at the cellular and molecular level by researches of correlation between breast cancer stem cells and genotyping, which are expected to provide new strategies and tools for diagnosis and treatment of breast cancer.
【Abstract】ObjectiveTo study the expressions of P-gp, nm23 and p53 in primary breast cancer tissues and to evaluate the prediction significance in recurrence of the primary breast cancer. MethodsExpressions of P-gp, nm23 and p53 in 57 benign and malignant breast paraffin-embedded specimens, the difference of the rate and intensity of positive reaction of P-gp,nm23 and p53 were checked by immunohistochemical staining.ResultsThe positive rate of nm23 significantly increased in benign breast tissues compared with the tissues of recurrence of breast cancer. The positive intensity of nm23 was significantly decreased in the tissues of recurrence of breast cancer compared with the tissues of primary breast cancer. The positive rate of p53 was significantly increased in malignant breast tissues compared with benign breast tissues. The positive intensity of p53 was significantly increased in the tissues of recurrence of breast cancer compared with the tissues of primary breast cancer. There was no difference in the positive rate of P-gp in the tissue of recurrence and primary of breast cancer compared with benign breast tumor. But the positive intensity of P-gp was significantly decreased in the tissues of recurrence and primary of breast cancer compared with benign breast tumor. ConclusionThe expression of p53 may indicate the proliferating activity of carcinoma cell. The positive intensity of expression of p53 and nm23 is valuable in prediction of the recurrence of primary breast cancer.
ObjectiveTo explore the relation between the molecular subtypes and efficacy of neoadjuvant chemotherapy with docetaxel together with epirubicin(TE) in breast cancer. MethodsAccording to the inclusion and exclusion criteria, 239 patients with breast cancer who at least received 3 cycles of TE-based neoadjuvant chemotherapy from May 2011 to December 2012 in this hospital were included. Molecular subtypes were categorized into luminal A, luminal B, human epidermal growth factor receptor 2(HER-2) positive, and triple negative by the immunohistochemical results of estrogen receptor(ER), progesterone receptor(PR), HER-2, and Ki-67 status. The relevant indicators of the different molecular subtypes of breast cancer patients, such as pathological complete response(pCR) rate, age, and menstruation, etc. were analyzed. ResultsThere were 67(28.03%) patients with luminal A, 84(35.15%) luminal B, 21(8.79%) HER-2, and 67(28.03%) triple negative in these 239 patients with breast cancer. The differences of age, menstruation, axillary lymph node status etc. among the four molecular subtypes were not statistically significant(P > 0.05). The pCR rate of triple negative breast cancer(14.93%) was the highest among four subtypes, followed by luminal B(7.14%), HER-2 positive(4.76%) and luminal A(1.49%), there was a significant difference(P=0.027). ConclusionsComparing with luminal A, luminal B, and HER-2 positive breast cancers, triple negative breast cancer is the most sensitive to TE neoadjuvant chemotherapy, and it has the highest pCR rate. Therefore, different treatment should be selected according to molecular subtypes of breast cancer.