Research progress of heat shock protein 90 in breast cancer / 中华内分泌外科杂志

Breast cancer has become the most common malignant tumor in the world. Heat shock protein 90 (HSP90) is a kind of molecular chaperone which can promote protein folding and maintain protein stability. HSP90 includes HSP90α, HSP90β, GRP94 and TRAP1 subtypes. Previous studies have found that the level of HSP90 is significantly increased in malignant tumors such as breast cancer, and is closely related to the occurrence and development of tumors. Meanwhile, the research on inhibitors targeting HSP90 has also attracted much attention. In this paper, we reviewed the expression of four HSP90 subtypes in breast cancer and their relationship with the clinicopathologic feature and prognosis of patients, discussed the research progress of specific inhibitors of HSP90 subtypes in breast cancer, and analyzed the application prospect of HSP90 as biomarkers for breast cancer prognosis monitoring and therapeutic targets.

The relevance of EZH2 polymorphism to breast cancer risk in Chinese females: results from a multicenter case-control study / 中华普通外科杂志

Objective:To investigate the relationship between single nucleotide polymorphism (SNPs) of Zeste homolog enhancer 2 (EZH2) gene and the risk of breast cancer.Methods:Recruiting 1 039 breast cancer patients and 1 040 controls at 22 referral hospitals nationwide in China, the genotype distribution of 3 SNPs loci of EZH2 genes was observed to detect the correlation between different genotypes and the risk of breast cancer genotypes EZH2 expression in breast cancer tissues and its correlation with patient prognosis were analyzed using breast cancer data from the database.Results:EZH2 rs6464926 CC genotype was compared with TT genotype (TT vs. CC: OR=1.362, 95% CI: 1.063-1.746, P=0.015) and dominant model (TC+TT vs .CC: OR=1.22, 95% CI: 1.004-1.483, P=0.045) .In women with BMI ≥24 kg/m 2, the TC genotype ( P=0.050), TT genotype ( P=0.025) and dominant model (TC+TT, P=0.021) of rs6464926 locus were significantly different from CC genotype in cancer risk. rs6464926 was correlated with EZH2 gene expression ( P=6.89E-47). EZH2 gene is highly expressed in breast cancer tissues, and patients with high expression were associated with shorter OS ( HR=1.27, P=0.013), DMFS ( HR=1.37, P<0.01), and RFS ( HR=1.44, P<0.01). Conclusions:The polymorphism rs6464926 of EZH2 gene is associated with breast cancer susceptibility in Chinese women. rs6464926 might regulate breast cancer risk and prognosis by changing EZH2 expression.

Determination of methyl ethyl ketone in urine by headspace gas chromatography / 中华劳动卫生职业病杂志

Objective@#To establish a method for determination of methyl ethyl ketone in urine by headspace gas chromatography.@*Methods@#In the urine sample(hereinafter referred to as urine sample), methyl ethyl ketone is pretreated by headspace technology, and a certain amount of head air is injected into the gas chromatograph, separated by capillary column, detected by hydrogen flame ionization detector, and the retention time is qualitative and the peak height is high. Peak area.@*Results@#Good linearity was in the range of 0.01 to 6.0 μg/ml with a regression equation of y=13.316x+0.8497 and γ=0.9997.The minimum detectable concentration of methyl ethyl ketone was 0.01 μg/ml. The range intra-day RSD and inter-day RSD were 2.2%-5.5% and 2.5%-6.1% respectively. Urine samples can be stored for 20 days in the refrigerator at 4 ℃.@*Conclusion@#The method has a high advantage of sensitivity and accuracy, and also easy to operate. Therefore, it is suitable for the determination of methyl ethyl ketone in urine.

Clinicopathological characteristics and risk factors of female breast hyperplasia in different age groups / 中华普通外科杂志

Objective To analyze clinicopathological characteristics and the potential risk-related factors of female breast hyperplasia in different age groups.Method From Jan 2015 to Dec 2016,patients diagnosed with breast hyperplasia in 12 hospitals were evaluated.All patients completed the self-designed questionnaires on women'health,including basic demographic information,clinic examination information,radiologic information and pathologic results.The patients were divided into a young group (＜ 45 years old) and an elderly group (from 45 to 75 years old).Results There were 3 684 cases of breast hyperplasia,including 2 291 cases in young group and 1 393 cases in elder group,respectively Clinically breast pain type were most commonly observed in both young and older groups (50.3％ vs.42.7％,P ＜ 0.001).While pathological research based on biopsy showed that breast adenopathy were the most common changes in both groups (67.9％ vs.61.7％,P ＜0.001).More breast cancer cases were identified in elder group than that in young group,especially in clinically lump type patients (9.4％ vs.4.2％,P ＜ 0.001).Compared with elder group,patients in young group have different distribution characteristics regarding to fertility factors,lifestyle factors and psychology scale including anxiety and depression.Conclusion Distributions of clinicopathological characteristics and risk factors of female breast hyperplasia differ across different age groups.

Various forms of anterolateral thigh flap for lower extremity and ankle amputation with extensive skin and soft tissue defect reconstruction / 中国医师杂志

Objective To explore the application of various forms of anterolateral thigh flap in lower extremity and ankle amputation with extensive skin and soft tissue defect reconstruction.Methods From September 2011 to December 2015,26 cases of lower extremity and ankle amputation with extensive skin and soft tissue defect reconstruction (included 20 male patients and 6 female patients) were admitted,the age ranged from 22 to 61 years old (38.6 ± 4.5).Among these cases,10 cases received flow-through anterolateral thigh flap,16 cases used chimeric anterolateral thigh flap with vastus lateralis thigh muscle flap,15 flaps were thinned in one-staged,5 flaps were harvested in double-paddled form.The flap size ranged from 10 cm × 6 cm to 28 cm × 12 cm.The donor site was closed directly in all cases.Results All flaps and replanted extremities survived uneventfully.All patients were followed up for 8 to 30 months with satisfied esthetic and functional results in reconstructed foot and ankle,the texture of flaps was good,no bulky was noted and no second revision was needed.No local ulcer happened and regained protective sensation.Only linear scar left in the donor sites,no hernia occurred.Conclusions Various forms of anterolateral thigh flap is the effective choice in lower extremity and ankle amputation with extensive skin and soft tissue defect reconstruction.

Analysis of heart rate variability in patients with chest pain accompanied by different traditional Chinese medicine syndromes / 中国中西医结合急救杂志

Objective To explore the correlations between different traditional Chinese medicine (TCM) syndromes and the heart rate variability (HRV) accompanying patients with chest pain,and to provide a referen()for clinical syndrome differentiation in such patients.Methods A prospective study was conducted.()hundred and seventeen patients with chest pain admitted into Longhua Hospital Affiliated to Shanghai U()of TCM from January 2015 to October 2016 were assigned in a study object,and according to the diffe()TCM syndromes,they were divided into syndrome of qi deficiency with blood stasis,the blood sta()the deficiency of qi and yin,suppression of the chest yang,phlegm and blood stasis,qi-stagnan ()syndromes.In the same period,123 healthy people having undergone physical examination wer()control group.The time domain indexes of HRV were recorded by dynamic electrocardiogr()normal control group were compared to those of patients with different TCM syndrom()distribution in different TCM syndromes and various HRV time domain indexes we()cycle time domain indexes were as follows:the average standard deviation o()standard deviation of R-R interval (SDNN),24 hours standard deviation of()5 minutes (SDANN),24 hours the mean square root of difference values,()were observed in both groups.Results The chest pain patients a()accounting for the largest proportion (35 cases,29.9％),and ac()smallest proportion (5 cases,4.3％) in the study group;the nu()syndrome (17 cases vs.14 cases),blood stagnation of hea()(6 cases vs.2 cases) and qi-stagnation and blood stasis s()in men;the numbers of patients with deficiency of qi()(4 cases vs.2 cases) in men were more than thos()female patients were lower than those in maj()66.8 (33.4,33.4) vs.103.4 (39.7,135.4),124.7 (88.0,143.4) vs.167.0 (90.5,230.1),84.0 (22.5,132.6) vs.152.4 (31.4,240.0),all P ＜ 0.05].The SDANN in patients with chest discomfort accompanied by any one of the above mentioned types of TCM syndrome was significantly lower than that in the control group,and its degree of descent was more remarkable in the patients with qi deficiency with blood stasis,the blood stagnation of heart and suppression of the chest yang syndromes (ms:74.86± 25.69,80.39± 20.53,70.97± 23.53 vs.131.30± 34.70,all P ＜ 0.05);the SDNN of patients with deficiency of qi and yin syndrome was higher than that in the blood stagnation of heart syndrome,phlegm and blood stasis,and qi-stagnation and blood stasis syndrome significantly (ms:181.25 ± 65.20 vs.97.88± 23.61,84.28 ± 22.34,89.93 ± 8.43,all P ＜ 0.05);the RMSSD of patients with deficiency of qi and yin syndrome was increased significantly compared with that in the healthy controls and in patients with the blood stagnation of heart syndrome (ms:91.94 ± 44.02 vs.28.00± 10.50,32.21 ± 18.25,both P ＜ 0.05).Conclusions Patients with chest pain accompanied by different TCM syndrome types may develop obvious heart rate variability,and the descent of SDANN level was the most significant.The analysis of HRV changes in such patients has positive significance for their diagnosis and treatment.

The relationship between plasma triglycerides, cholesterol levels and breast cancer / 中华内分泌外科杂志

Objective To investigate the relationship between plasma triglycerides ( TG ) , cholesterol (TC)levels and breast cancer.Methods 105 cases of breast cancer(age from 22 to 69 years)and 261 cases of healthy control(age from 16 to 52 years)admitted from May.2014 to Oct.2014 were studied.TG and TC were tested.Subgroup analysis was performed by age (<35, 35-45, ≥45 years) and BMI( <18.5, 18.5-24, ≥24).Results TG level in breast cancer group was significantly higher than that of the healthy control group (t=-3.97,P=0.00), and TC level was lower than that in the healthy control group (t=2.49, P=0.01).TG lev-el of breast cancer patients≥45 years old was higher than that in the healthy control group ( t=-4.31, P=0.00).TC level of breast cancer patients <35 years and from 35 to 45 years was lower than that of the healthy control group(t=3.12, P=0.00及t=2.41, P=0.02); TG levels in breast cancer group were significantly lower than those of the healthy control group for all BMI subgroup ( t=-3.67, P=0.01 for BMI<18.5; t=-3.87, P=0.00 for BMI from 18.5 to 24.0;t=-2.01, P=0.04 for BMI≥24).TC level of breast cancer patients was higher than that of the healthy control group for patients whose BMI <18.5(t=-3.41, P=0.01) and it was lower than that of the healthy control group for patients whose BMI≥24.Conclusions The relation-ship between TG , TC and breast cancer is associated with age .Compared with healthy group , breast cancer pa-tients≥45 years have a higher TG level and breast cancer patients <45 years have a lower TC level .

Clinical effects of different dosages of Shenfu injection for treatment of elderly patients with refractory chronic congestive heart failure / 中国中西医结合急救杂志

Objective To investigate the clinical effects of different dosages of Shenfu injection for treatment of elderly patients with refractory chronic congestive heart failure (CHF).Methods A prospective study was conducted, 360 patients with CHF from Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine were enrolled, and they were randomly divided into low dose, middle dose and high dose Shenfu injection groups. In the three groups, the patients received the same conventional medicine therapy, and additionally they were treated by low, medium and high dose Shenfu injection (60, 80, 100 mL/d, respectively), once a day. The therapeutic course was 10 days in the three groups. After treatment, the clinic therapeutic effect, left ventricular diastolic end diameter (LVEDD), left ventricular ejection fraction (LVEF), stroke volume (SV), cardiac output (CO), cardiac index (CI) and plasma B type natriuretic peptide (BNP) were observed in the three groups.Results The total therapeutic effective rate in middle dose Shenfu injection group was significantly higher than that in low dose and high dose Shenfu injection groups [82.5% (99/120) vs. 54.2% (65/120), 60.0% (72/120), bothP < 0.05]. In high dose Shenfu injection group, increase of blood pressure occurred in 15 cases (12.5%), but no such phenomenon appeared in low and middle dose Shenfu injection groups. In the three groups, no cardiac arrhythmia, liver function abnormality, myocardial enzymogram abnormality, etc. adverse reactions occurred. Compared with those before treatment, after treatment in three groups the LVEDD and BNP were significantly decreased, while LVEF, SV, CO and CI were markedly increased. The changes of above index in middle dose Shenfu injection group were more significant [LVEDD (mm): 46.1±6.3 vs. 58.3±4.4; LVEF: 0.561±0.056 vs. 0.324±0.044, SV (mL): 58.1±6.3 vs. 35.7±5.4, CO (L/min): 5.78±0.60 vs. 4.21±0.78, CI (mL·s-1·m-2): 81.85±7.33 vs. 53.01±9.00, BNP (ng/L): 355.4±76.6 vs. 3 263.2±65.7, allP < 0.05]. Conclusion Shenfu injection 80 mL/d is the best effective dosage for treatment of elderly patients with refractory CHF and its incidence of adverse events is low.

Establishment of novel rat models for premalignant breast disease / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Breast cancer has become one of the most common malignant tumors among females over the past several years. Breast carcinogenesis is a continuous process, which is featured by the normal epithelium progressing to premalignant lesions and then to invasive breast cancer (IBC). Targeting premalignant lesions is an effective strategy to prevent breast cancer. The establishment of animal models is critical to study the mechanisms of breast carcinogenesis, which will facilitate research on breast cancer prevention and drug behaviors. In this study, we established a feasible chemically-induced rat model of premalignant breast cancer.</p><p><b>METHODS</b>Following the administration of the drugs (carcinogen, estrogen, and progestogen) to Sprague-Dawley (SD) rats, tumors or suspicious tumors were identified by palpation or ultrasound imaging, and were surgically excised for pathological evaluation. A series of four consecutive steps were carried out in order to determine the carcinogen: 7,12-dimethylbenzaanthracene (DMBA) or 1-methyl-1-nitrosourea, the route of carcinogen administration, the administration period of estrogen and progestogen, and the DMBA dosage.</p><p><b>RESULTS</b>Stable premalignant lesions can be induced in SD rats on administration of DMBA (15 mg/kg, administered three times) followed by administration of female hormones 5-day cycle.</p><p><b>RESULTS</b>were confirmed by ultrasound and palpation.</p><p><b>CONCLUSION</b>Under the premise of drug dose and cycle, DMBA combined with estrogen and progestogen can be used as a SD rat model for breast premalignant lesions.</p>

The effect of 6 cycles ET neoadjuvant chemotherapy regimen on breast cancer and its influencing factors / 中华普通外科杂志

ObjectiveTo explore the influencing factors in neoadjuvant chemotherapy on pathological complete response (pCR),by analyzing the effect of 6 cycles epirubicine combined with docetaxel(ET) regimen in breast cancer patients. MethodsFrom June 2009 to September 2011,clinical date of 52 Ⅱ,Ⅲ stage breast cancer patients treated with ET regimen for neoadjuvant chemotherapy for 6 cycles were retrospectively analyzed.The curative effect was evaluated by palpation and ultrasonography,and finally compared with postoperative pathological results. ResultsIn these 52 patients,the total pCR rate was 42.3％ after 6 cycles chemotherapy.After the first circle of chemotherapy,pCR rate was higher in patients with tumor size reducing ＞ 30％ than those ＜ 30％ as measured by ultrasonography(60.9％ vs.27.6％,P ＜0.05 ).Higher pCR rate was obtained in patients with tumor size ≤3 cm than those in which the initial tumor size ＞ 3 cm(52.9％ vs.22.2％,P ＜0.05) after 6 cycles ET neoadjuvant chemotherapy.PCR rate was higher in patients with positive HER-2 or triple negative breast cancer after 6 cycles than those with luminal type 1breast cancer ( 77.8％,75.0％ and 25.7％,respectively,P ＜ 0.05 ).Logistic regression analysis showed that tumor size and its early response to neoadjuvant chemotherapy evaluated by ultrasonography were the significant predictive factors. ConclusionsHigher pCR rate can be achieved after 6 cycles ET regimen neoadjuvant chemotherapy in stage ]Ⅱ,Ⅲ breast cancer patients.Tumor's early response to chemotherapy as evaluated by ultrasonography could forecast the pCR.Tumor size and molecular type are important influencing factors on pCR in breast cancer patients.

Docetaxel/vinorelbine combination treatment of breast cancer / 国际外科学杂志

Docetaxel and vinorelbine, which were plant alkaloids, had showed the good activities as chemotherapy of breast cancer. Combination chemotherapy with docetaxel and vinorelbine had drawn more and more attention. This papers reviewed the docetaxel/vinorelbine combination treatment of breast cancer.

Age-related tabular involution and breast cancer / 国际外科学杂志

With the age increasing,the lobules in women's breasts undergo progressive involution or regression,which is called age-related lobular involution.It's a physiologic and irreversible process,while the rate and extent of involution vary considerably among individual women.It has been hypothesized that the extent of age-related lobular involution is strongly associated with a reduced risk of breast cancer,and there are some associations between lobular involution and risk factors of breast cancer.

The prevalence of breast cancer in parts of China / 肿瘤研究与临床

Objective To learn about the incidence and epidemiological characteristics of breast cancer in parts of China by a survey of women's breast health. Methods Multi-stage stratified randomized cluster sampling of the cross-sectional study was applied in collecting data of women aged 25 to 70 in Shandong, Hebei, Jiangsu and Tianjin province. All subjects included in the investigation attended face-toface interviews and clinical breast examinations. Results 122 058 females aged 25-70 years old in three provinces and Tianjin metropolitan were included. 320 (58 incident cases) breast cancer cases were documented in this investigation, that is 262.2/105 in prevalence. There was a higher breast cancer prevalence in subjects aged 45 to 54 and aged 55 to 64 within one year. The standardized detection rate of 54.2/105 in rural areas was higher than urban areas' 45.3/105. Conclusion Carring out the screening of female breast cancer and popularizing the knowledge of breast cancer prevention consistently, which could improve the detected rate of breast cancer.

Regional blood perfusion, metabolism and angiogenesis of breast cancer / 中华普通外科杂志

Objective To evaluate the correlation between regional blood perfusion,metabolism and angiogenesis in breast cancer.Methods The PET/CT functional imaging technique was applied to quantitatively detect the central and marginal blood perfusion parameters including blood flow(BF),blood volume(BV)and permeability of surface(Ps),and metabolism index of standard uptake value(SUV)of the tumor in 33 breast cancer patients.The expression of CD31.CD105 and VEGF in paraffin section of breast cancer were detected by immunohistochemical method,then MVD(CD31)and MVD(CD105)were obtained.The relationship between the regional blood perfusion and metabolism and MVD(CD3 1),MVD(CD105)and the expression of VEGF were analyzed. Results There was significant correlation of MVD (CD31)with BF of marginal region(P<0.05).There were significant correlations of MVD(CD105)with BF.PS and SUV(P<0.05). Conclusions Regional blood perfusion,metabolism is correlated with angiogenesis in breast cancer tissue.PETT/CT regional blood perfusion and metabolic imaging iS a noninvasive method which can be used to estimate angiogenesis status clinically in breast cancer.

A study on the thethymidylate synthase gene polymorphisms and its relationship with clinical characteristics in breast cancer / 中华普通外科杂志

ObjectiveTo investigate the distribution of thethymidylate synthase (TS) gene polymorphisms inChinese femaleHan-nationality breast cancer patients,including tandemrepeat polymorphisms in the enhancer region ( ER), 6 bp deletion/insertion (del6/ins6) polymorphism in the 3′untranslated region (3′-UTR) and G→C single-nucleotide polymorphism (SNP). The association of TS gene polymorphism with pathological results was retrospectively analyzed.MethodsThis study included 83 breast cancer patients who received no preoperative chemotherapy. The polymorphisms of TS, ER and TS 3′2UTR were determined by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method.Results ( 1 ) Of the 83 patients, the frequencies of the TSER 3R/3 R, 2R/3 R and 2R/2R were 68.7％ ,27. 7％ and 3. 6％, respectively; (2) Due to existence of the G→C single nucleotide polymorphism,TSER genotypes were divided into 2R/2R, 2R/3C, 2R/3G, 3G/3G,3C/3C and 3G/3C,their frequencies were 3. 6％, 19. 3％, 8.4％, 19. 3％, 37. 3％ and 12. 1％, respectively; ( 3 ) Of the 83 patients, the frequencies of the TS 3′-UTR ins6/ias6、ins6/del6 and del6/del6 were 8.4％ 、50.6％ and 41.0％, respectively; (4) TSER polymorphisms were correlated with lymph node metastasis ( P = 0.019 ),Ki67 ( P = 0.022 ) and histological grade ( P = 0.042 ). The TS 3′-UTR polymorphisms were correlated with age ( P = 0.002) and histological grade (P = 0.042). G→C SNP were correlated with lymph node metastasis ( P = 0.021 ) and histological grade ( P = 0.028 ).ConclusionsChinese female Han-nationality breast cancer patients have more genotypes frequencies of the TSER 3R/3R and 3′-UTR del6/del6; The TS polymorphisms are correlated with pathological factors of breast cancer.

The clinicopathologic characterizations and prognosis in pafients of basal-like breast cancer / 中华普通外科杂志

Objective To analyze the clinicopathologic characterizations and patients prognosis of basal-like breast cancer. Methods The clinicopathologic eharacterizations,patient 5 year disease-free survival rate and overall survival rate of 25 basal-like breast cancer patients were compared with 34 CerbB2 overexpressing subtype and 37 ER positive subtype breast cancer patients admitted in our hospital in the same period. Results Patients of basal-like breast cancer accounted for 15.7% of all patients admitted.Compared with CerbB2 over-expressing subtype(29.4%)and ER positive subtype(35.1%),basal-like breast cancer patients were eider with 56.0% being≥50 years old(P＜0.05).Basal-like subtype breast cancer was larger in tumor size than ER positive subtype(P＜0.05),56% of basal-like subtype were of poor-differentiated grade pathologically compared with 18% in CerbB2 overexpression type and 16% in ER positive subtype respectively. Meanwhile, axillary lymph node metastasis was hishbar in CerbB2 overexpressing and ER positive subtype(64.7%,64.9%)than that of basal-like subtype(40.0%).Most visceral metastases were found in basal-like and CerbB2 subtype,but there were more local lymph node and bone metastases in ER positive subtype.Five year overall survoval rate of CerbB2 overexpressing subtype (48.5%)and basal-like subtype breast cancer patients(44.1%)were poorer than that of ER positive subtype(83.8%).respectively;However,there was no difference in 5 year disease-free surviVal rate between the three subtypes(42.7%,40.4%,58.3%,respectively).Conclusions Similar to CerbB2 over-expressing subtype.tlle clinicopathologic characterization and prognosis in basal-like breast cancer are poorer than that in ER positive subtype.

Diagnosis and treatment of thyroid malignant tumors concomitant with Hashimoto′s disease: report of 18 cases / 中国普通外科杂志

Objective To explore the diagnosis and treatment of thyroid malignant tumor (TMT) arising on basis of Hashimoto′s disease (HD).Methods 150 pathology proved HD patients admitted between 1976 and 1999 were retrospectively analyzed for the incidence of TMT.Results 15 HD patients were found suffering from thyroid carcinoma with a concurrent rate of 10%, and 3 with thyroid malignant lymphoma (TML) (2%). All postoperative TMT patients were followed up for an average period of 6 years, 15 TC patients were all alive without recurrence, and all TML patients died within 2 years.[WT5”HZ] Conclusion Surgical treatment of HD patient associated with TMT is indicated. The key to diagnosis and rational treatment are a detailed understanding its clinical feature, routine examination of serum antibodies and FNAC or frozen section in operation.

Qualitative analysis of FDG uptake and blood perfusion by PET/CT in breast cancer / 中国普通外科杂志

Objective To evaluate the use of PET/CT in the diagnosis of breast cancer. Methods In this study,33 patients with suspicious breast tumor underwent PET/CT imaging. The images of the breast were analyzed for qualitative assessment of increased tracer uptake and blood perfusion with PET/CT. Results Among 27 cases with pathology proved breast cancer,25 was judged as PET/CT positive,2 was false-negative. Sensitivity, specificity and accuracy of PET/CT in identifying breast cancer were 92.6%,100%,93.9%. Conclusion PET/CT is a reliable and sensitive measure in the diagnosis of breast cancer in vivo.

The application of mammotome system in diagnosis and treatment of breast tumor: a report of 115 cases / 中国普通外科杂志

Objective To investigate the value of clinical application of mammotome under ultrasonic guidance for minimal excision and biopsy of breast tumor.Methods Excision and biopsy of 152 breast masses from 115 patients were performed using mammatome under ultrasonic guidance,and the patients were followed up.Results Total resection of 152 breast tumors were accurately performed by mammotome vacuum device and biopsy was performed.On pathological examination,86 cases were fibroadenoma,34 cases were adenosis,2 cases were fat necrosis,3 cases were gynecomastia,1 case was ductal inflammatory change and 26 cases were breast cancer.Postoperatively,hematoma was found in 3 cases,subcutaneous ecchymosis in 4 cases and skin injury in one case.All cases were followed up for a period of time and no residual or recurrent masses were found.Conclusions Mammotome vacuum system is an exact,effective and safe method.It is an ideal minimally invasive operation in treating benign breast masses with few complications.It can also be applied to biopsy for breast cancer before operation.

Combining anticancer effect of tamoxifen and ?-interferon on breast cancer in vitro and its mechanism / 中国普通外科杂志

Objective To investigate the combining anticancer effect of tamoxifen(TAM) and ?-interferon on breast cancer cells in vitro and its mechanism.Methods MCF-7 ER-positive breast cancer cell lines were treated with tamoxifen alone,or in combination with ?-interferon and/or estrogen in vitro.Cell proliferation was evaluated by MTT assay;FCM was used to determine the distribution of cell cycle,cell apoptosis and protein expression of Bcl-2,Bax,Fas,FasL,Caspase-8,and the activity of Caspase-3.Results TAM inhibited the proliferation of ER-postive breast cancer cells with cell cycle arrest in G0/G1 phase and with induction of apoptosis,and the proliferation-promoting effect of estrogen on MCF-7 was blocked by TAM.Anticancer effect of TAM was enhanced when cells were pretreated with ?-interferon for 24 hours.Bcl-2 protein expression was down-regulated and Caspase-8 was up-regulated by TAM and/or ?-interferon,but these drugs did not affect Bax,Fas,FasL protein expression and the activity of Caspase-3.Conclusions TAM has anticancer effect by inhibiting proliferation and inducing apoptosis in ER-positive breast cancer cells in vitro,and ?-interferon can enhance anticancer effect of TAM on breast cancer cells.The mechanism of these effects may be related with the down-regulation of Bcl-2 expression and up-regulation of Caspase-8 by TAM and ?-interferon.