乳腺癌组织中BCRP的表达与新辅助化疗疗效的关系

目的 探讨原发性乳腺癌组织中乳腺癌耐药蛋白（breast cancer resistance protein,BCRP）的表达与新辅助化疗疗效的相关性。方法 采用免疫组织化学MaxVisionTM一步法检测84例原发性乳腺癌组织中BCRP的表达,结合新辅助化疗后临床疗效及术后病理组织学Miller&Payne（MP）分级,分析BCRP的表达与新辅助化疗疗效及相关病理指标的相互关系。结果 （1）原发性乳腺癌组织中BCRP的阳性表达率为71.43%。（2）BCRP的表达水平与新辅助化疗临床疗效有关,新辅助化疗后获得cCR组患者BCRP表达水平明显低于SD+PD组和cPR组,三组间BCRP表达水平的差异有统计学意义（χ2=9.779,P=0.008）。（3）BCRP的表达水平与新辅助化疗后组织学反应有关,组织学显著反应组（病理反应4~5级）BCRP的表达水平明显低于组织学非显著反应组（病理反应1~3级）,差异有统计学意义（χ2=8.649,P=0.003）。（4）BCRP的表达水平与新辅助化疗后残余阳性腋窝淋巴结的个数正相关（r =0.518,P=0.000）。结论 BCRP在原发性乳腺癌组织中有一定程度的表达,BCRP的表达水平可以预测新辅助化疗的临床疗效及组织学反应,BCRP的表达水平与新辅助化疗后残余阳性腋窝淋巴结的个数正相关,BCRP可以作为判断患者化疗效果及预后指标之一。     

Survivin 和 MRP1 在宫颈鳞癌中的表达及其对新辅助化疗敏感性的预测研究

目的：探讨新辅助化疗前后Survivin、MRPl在宫颈鳞癌组织中的表达及其与化疗敏感性的关系。方法：采用免疫组化sP法对38例宫颈鳞癌患者新辅助化疗（NACT）前后MRPl、Survivin的表达水平进行检测。结果：NACT前Survivin的阳性表达率（63．16％）显著高于NACT后（39．47％）（P〈0．05）,且NACT前Sur—vivin表达阴性者化疗有效率（92．86％）高于表达阳性者（62．50％）（P〈0．05）。Survivin的表达水平与宫颈鳞癌的分化程度相关（P〈0．05）,但与年龄、临床分期不相关（P〉0．05）。新辅助化疗前后MRPl在宫颈鳞癌中的阳性表达率分别为84．21％和92．11％,两者间无显著性差异（P〉0．05）,且化疗前MRPl表达阴性者与表达阳性者化疗有效率分别为83．33％、71．88％,两者问无显著性差异（P〉0．05）。MRPl的表达与宫颈癌的临床分期、分化程度、年龄均不相关（P〉0．05）。结论：Survivin、MRPl在宫颈鳞癌组织中均有较高的表达水平,但只有Survivin的表达水平与NACT疗效具有显著的相关性,Survivin的表达水平可作为预测宫颈鳞癌对化疗敏感性的指标。     

细胞周期蛋白D1表达与乳腺癌新辅助化疗关系的研究

目的 观察乳腺癌新辅助化疗(NAC)前后cyclin D1表达情况,探讨其与化疗效果之间的关系.方法 选择84例乳腺癌患者经空心针穿刺获取组织学样本并加以验证,经3～4个周期ET方案[吡柔比星(THP)+多西紫杉醇(TXT)]NAC,采用免疫组织化学Envision二步法检测化疗前、后cyclinD1的表达变化情况.结果 84例患者中完全缓解(CR)4例(4.76％)(其中病理CR 2例),部分缓解(PR) 54例(64.29％),稳定(SD) 26例(30.95％),无疾病进展(PD)患者.NAC后乳腺癌组织中cyclin D1表达降低[65.48％(55/84)],与化疗前[39.29％(33/84)]相比,差异有统计意义(x 2=11.55,P=0.001).NAC后cyclin D1阳性表达转为阴性表达者临床缓解率[86.36％(19/22)]高于未转为阴性表达者[45.45％(15/33)],差异有统计学意义(x2=9.359,P=0.002).结论 NAC降低乳腺癌组织中的cyclinD1表达,且NAC后cyclinD1表达转阴者化疗效果提高,可以评估NAC的有效性.     

CAF方案新辅助化疗对乳腺癌组织BCSG1蛋白表达的影响

目的:探讨CAF联合化疗方案的新辅助化疗对乳腺癌组织BCSG1蛋白表达的影响.方法:采用免疫组化SP法分别检测34例行CAF联合方案新辅助化疗患者(新辅助化疗组)和同期110例未行新辅助化疗惠者(对照组)手术切除的乳腺癌组织BCSG1蛋白的表达.同时对新辅助化疗组疗效进行病理形态学评价,并分析BCSG1蛋白表达与病理形态学变化的关系.结果:新辅助化疗组化疗总有效率为79.4%.新辅助化疗组BCSG1蛋白高表达率明显低于对照组(29.4%比64.5%,P＜0.01),化疗后部分缓解(Ⅱ级)病例BCSG1蛋白高表达水平明显低于无效(Ⅲ级)病例(P=0.002).结论:采用CAF方案新辅助化疗近期疗效明显,可抑制乳腺癌BCSG1蛋白的表达.     

MCM5及Ki-67蛋白表达与乳腺癌新辅助化疗近期疗效关系的研究

目的:探讨人乳腺癌新辅助化疗前后MCM5和Ki-67蛋白的表达状况,分析其与化疗疗效关系的意义.方法:采用免疫组化法检测40例乳腺癌新辅助化疗前后标本中MCM5和Ki-67的表达.结果:新辅助化疗有效率为77.5%.化疗前MCM5和Ki-67蛋白阳性表达显著高于化疗后(P＜0.01);化疗前MCM5蛋白阳性表达显著高于Ki-67(P＜0.01).化疗有效组(31例)MCM5蛋白阳性表达显著高于无效组(9例)(P＜0.01);化疗有效组Ki-67蛋白阳性表达高于无效组,但差异无显著性(P＞0.05).化疗前MCM5、Ki-67表达呈正相关(r=0.601,P＜0.01).结论:ET方案新辅助化疗有较好的疗效,可能通过抑制MCM5、Ki-67蛋白的表达来阻止乳腺癌细胞的增殖.MCM5蛋白高表达者化疗更为敏感,MCM5可作为临床指导乳腺癌化疗并预测化疗敏感性的分子生物学指标之一.     

CAF方案新辅助化疗对乳腺癌组织BCSG1蛋白表达的影响(英文)

目的探讨CAF联合化疗方案的新辅助化疗对乳腺癌组织BCSG1蛋白表达的影响。方法采用免疫组化SP法分别检测34例行CAF联合方案新辅助化疗患者(新辅助化疗组)和同期110例未行新辅助化疗患者(对照组)手术切除的乳腺癌组织BCSG1蛋白表达。同时对新辅助化疗组疗效进行病理形态学评价,并分析BCSG1蛋白表达与病理形态学变化的关系。结果新辅助化疗组化疗总有效率为79．4％。新辅助化疗组BCSG1蛋白高表达率明显低于对照组(29．4％比64．5％,P<0．01),化疗后部分缓解(Ⅱ级)病例BCSG1蛋白高表达水平明显低于无效(Ⅲ级)病病(P=0．002)。结论采用CAF方案新辅助化疗近期疗效明显,可抑制乳腺癌BCSG1蛋白的表达。     

乳腺癌患者中肿瘤异常糖链蛋白的表达情况及与新辅助化疗疗效的关系

目的探讨乳腺癌患者中肿瘤异常糖链蛋白(TAP)的表达情况及与新辅助化疗疗效的关系。方法选择80例行新辅助化疗的乳腺癌患者和80例乳腺良性肿瘤患者,分别作为观察组和对照组。检测并比较两组患者的血清TAP水平,分析化疗前不同临床特征乳腺癌患者的TAP水平以及不同临床疗效乳腺癌患者化疗前后的TAP水平。结果观察组患者化疗前的TAP水平明显高于对照组,差异有统计学意义(P﹤0.01)。化疗前,临床分期为Ⅲ期、有淋巴结转移乳腺癌患者的TAP水平分别明显高于临床分期为Ⅱ期、无淋巴结转移的患者,差异均有统计学意义(P﹤0.01)。化疗后部分缓解(PR)患者的TAP水平低于化疗前,疾病进展(PD)患者的TAP水平高于化疗前,差异均有统计学意义(P﹤0.05)。化疗后,PR患者的TAP水平低于疾病稳定(SD)和PD患者,SD患者的TAP水平低于PD患者,差异均有统计学意义(P﹤0.05)。结论乳腺癌患者的血清TAP水平较高,TAP水平可能与患者的临床特征有关,且可能在预测化疗疗效方面具有一定的价值。     

新辅助化疗对乳腺癌组织MasPin蛋白表达的影响

目的:探讨CAF联合化疗方案的新辅助化疗对乳腺癌组织Maspin蛋白表达的影响.方法:采用免疫组化SP染色法分别检测38例行CAF联合方案新辅助化疗患者(化疗组)和同期173例未行新辅助化疗患者(对照组)手术切除的乳腺癌组织Maspin蛋白表达.同时对化疗组化疗疗效进行病理形态学评价,并分析Maspin蛋白表达与病理形态学变化的关系.结果:化疗组总有效率为81.6%.两组病例癌细胞胞浆的Maspin蛋白阳性表达率无明显差异(93.6%,97.4%).化疗组胞核Maspin蛋白高表达率明显高于对照组(50.0%,40.5%,P<0.05),其中,化疗组强阳性表达率7.9%,而对照组仅为0.6%(P<0.05).化疗后部分缓解(Ⅱ级)病例细胞核Maspin蛋白表达水平明显高于无效者(Ⅲ级)(P<0.01).结论:采用CAF方案新辅助化疗近期疗效明显,可部分恢复乳腺癌细胞核Maspin蛋白的表达.     

乳腺癌中survivin的表达与不同新辅助化疗方案疗效的关系

目的：研究乳腺癌中survivin的表达与不同新辅助化疗方案疗效的关系，探讨survivin能否作为预测乳腺癌化疗疗效，指导化疗方案选择的生物学指标。方法：应用CMF、CEF、NEF、TEC4种化疗方案对185例乳腺癌病人进行了新辅助化疗，完成2个周期的新辅助化疗后对患者的疗效进行评价；化疗前及术后采用免疫组织化学技术检测标本中survivin的表达。结果：CMF、CEF、NEF、TEC4种f2疗方案的总有效率分别为43．5％、64．6％、67．3％和69．2％；CMF、CEF、NEF方案有下调survivin表达的趋势；TEC方案化疗后survivin的表达减弱，差异有显著性；总体而言，化疗可以下调survivin的表达，差异有显著性。Survivin的表达与以上4种化疗方案的疗效无关，但survivin表达阴性和弱阳性病人的化疗有效率高于survivin表达阳性和强阳性的病人，差异有显著性。结论：化疗可以抑制乳腺癌survivin的表达，survivin表达阴性和弱阳性病人的化疗有效率高于survivin表达阳性和强阳性的病人，survivin在预测乳腺癌化疗疗效、指导化疗方案的选择上具有一定的参考价值。     

乳腺癌组织中IGF1R、ER表达与新辅助化疗疗效的关系

目的:探讨乳腺癌组织中胰岛素样生长因子受体1（insulin-like growth factor receptor 1,IGF1R）、雌激素受体（estrogen receptor,ER）蛋白的表达对患者新辅助化疗疗效的影响。方法:对我院接受新辅助化疗的114例乳腺癌患者（2015年1月至2015年12月）进行回顾性分析,所有患者于化疗前均接受免疫组织化学检测,根据新辅助化疗结果将患者分为完全缓解（pCR）组25例、未完全缓解（nCR）组89例,采用非条件Logistic回归模型探讨IGF1R、ER表达与新辅助化疗疗效的关系。结果:IGF1R阳性表达患者的pCR率为19.23%,阴性表达患者的pCR率为24.19%,差异无统计学意义（P>0.05）;ER阳性表达患者的pCR率为14.08%,低于阴性表达患者的34.88%,差异具有统计学意义（P<0.05）;发生淋巴结转移、ER阳性表达患者会降低新辅助化疗的疗效（P<0.05）,分化程度越高,患者的新辅助化疗疗效越好。结论:ER阳性表达患者新辅助化疗疗效较差,IGF1R表达程度与患者新辅助化疗疗效无关。     

Effects of neoadjuvant chemotherapy on MDR1 and MRP gene expression in primary breast cancer

Objective: To investigate the effects of neoadjuvant chemotherapy on the expression of drug resistance genes, multidrug resistance-1 (MDR1) and multidrug resistance-associated protein (MRP), in patients with primary breast cancer. Methods: MDR1 and MRP expression were detected by semi-quantitative RT-PCR in 20 patients with primary breast cancer, before and after chemotherapy. Results: Before chemotherapy, MDR1 and MRP expression can be detected in 15 cases (75%) and 18 cases (90%) respectively. After chemotherapy, expression of MDR1 is not significantly different from that before chemotherapy, but expression of MRP is significantly different from that before chemotherapy. Conclusion: Expression of drug resistance gene MRP, but not MDR1, is enhanced in patients with primary breast cancer submitted to neoadjuvant chemotherapy.     

The role of neoadjuvant chemotherapy for breast cancer treatment

Neoadjuvant chemotherapy has become popular, especially for patients with advanced breast cancer. The pros and cons of neoadjuvant chemotherapy for treating breast cancer patients are reviewed. The advantages of neoadjuvant chemotherapy are 1) overall survival and recurrence-free survival rate are the same as post-operative chemotherapy, 2) serves as an in vivo sensitivity test, 3) increases the rate of breast conserving therapy, 4) facilitates the study of cancer biology. On the other hand, the disadvantages of neoadjuvant chemotherapy are 1) it modifies the stage, 2) treatment delay of PD cases, 3) residual intraductal component may be left behind after breast conserving surgery, 4) there are some cases of over-treatment. Combination chemotherapy is one possible way to increase the pathological CR rate, although the optimal order and cycles have not been determined. To avoid residual cancer cells after breast conserving surgery, the shrinkage pattern should be evaluated by MRI. Core needle biopsy should be performed before neoadjuvant chemotherapy to avoid over-treatment. It is essential to develop more effective regimens and stratify patients based on predictive factors.     

The role of neoadjuvant chemotherapy for breast cancer treatment

Neoadjuvant chemotherapy is being used increasingly in the management of patients with breast cancer, especially locally advanced cases. Such treatment is administered with the aim of of reducing the size of the primary tumor to increase the possibility of breast-conserving treatment (BCT). In our series, during the period from May 1995 to December 2000, 86 patients with tumors between 3.1 and 6.0 cm in diameter received epirubicin-based neoadjuvant chemotherapy. There were 55 (64.0%) responders and ultimately 64 patients (74.4%) were treated with BCT. With a median follow-up time of 39 months, 9 patients in the BCT group had developed local recurrence. Long-term follow-up is required to establish whether this procedure is a safe alternative to mastectomy for patients with large breast cancers.     

Clinical significance of the relationship between expression of survivin and effects of neoadjuvant chemotherapy in locally advanced breast cancer

OBJECTIVE: Explore the relationship between the expression intensity of survivin and the effectiveness of neoadjuvant chemotherapy in locally advanced breast cancer patients. METHODS: Neoadjuvant chemotherapy with epirubicin plus paclitaxel was administered to 76 patients in locally advanced breast cancer (including 25 cases of stage IIa, 26 of stage IIb, 16 of stage IIIa, and 9 of stage IIIb), the mean age is 52.8(33-79)years old. All patients were female. They were treated with epirubicin 60 mg/m(2), on day 1, by i. v. followed paclitaxel 175 mg/m(2) by 3 hours continues infusion on day 2 and every 3 weeks repeatedly. Premedication of dexamethasone, ondansetron, diphenhydramine and cimetidine were administered to prevent gastroenteric and allergic reactions before chemotherapy. Four cycles were used. The expression of survivin in breast cancer tissue was detected with SDS-PAGE, western-immunoblotting and immunohistochemistry (IHC), and then that were immunological stained by anti survivin monoclonal antibody, and also the results were analyzed for the relationship between the expressed intensity of survivin and the effect of neoadjuvant chemotherapy in locally advanced breast cancer patients. RESULTS: Nineteen out of 76 patients had a clinical complete response, 36 had clinical partial response, and 21 had no change. The response rate was 72.37%(55/76). We found survivin could be differently expressed in 76 patients with SDS-PAGE, western-immunoblotting and IHC and then immune stain by anti survivin monoclonal antibody. Forty six patients were low expressed of survivin and 9 patients were high expressed in all response patients. Eight patients were low expressed, only 1 patient was high expressed of survivin in 9 patients had pCR. But no finding the relationship between the expression of survivin and TNM stage, ER, PgR, HER-2. CONCLUSION: The patients have high response rate of low expression of survivin after neoadjuvant chemotherapy with TE regimen in locally advanced breast cancer patients. This results shows that survivin is an important predictive factor for effectiveness of neoadjuvant chemotherapy with TE regimen in locally advanced breast cancer.     

分子分型与乳腺癌新辅助化疗疗效的相关性

目的:探讨乳腺癌分子分型与新辅助化疗疗效的相关性.方法:回顾性分析81例原发乳腺癌患者,分子分型分为HER-2阳性型和三阴型、Luminal A型、Luminal B1型、 Luminal B2型,并评估其与乳腺癌新辅助化疗疗效的关系.结果:新辅助化疗疗效与各分子分型之间的相关性无统计学意义,但新辅助化疗有效率达到pCR+tpCR(%)以三阴型最高(25%),其次是HER-2阳性型(23.1%),而达到CR+PR(%)为HER-2阳性型最高(84.6%).结论:乳腺癌新辅助化疗可有效控制肿瘤,分子分型能作为乳腺癌新辅助化疗疗效的缓解独立预测因子.     

TP与EC-T化疗方案在三阴性乳腺癌新辅助化疗中疗效与BRCA1突变关系

目的:探讨TP与EC-T化疗方案在三阴性乳腺癌新辅助化疗中的疗效,并探索铂类与BRCA1突变关系。方法:选取2016年5月-2020年5月在我院诊断三阴性乳腺癌需新辅助化疗的122例患者,均行BRCA检测,将BRCA1胚系突变患者及未突变患者随机分为两组,一组给予TP（62例）方案新辅助化疗,一组给予EC-T（60例）方案新辅助化疗;按照不同因素分析两组pCR差异。结果:TP组pCR率为56.5%,EC-T组pCR率36.7%,差异有统计学意义（P=0.029）;对于ypT0/is或ypN0 TP组对比EC-T组仍然具有明显优势（分别为64.5% vs 43.3%,P=0.019;69.4% vs 41.7%,P=0.002）;对于BRCA1突变患者,TP组与EC-T组pCR率无统计学差异（50.0% vs 44.4%,P=0.343）,对TP组内BRCA1突变与未突变人群pCR率无统计学差异（50.0% vs 57.7%,P=0.224）,对EC-T组内BRCA1突变与未突变人群pCR率无统计学差异（44.4% vs 35.3%,P=0.248）。122例患者的不良反应以 1-2级较常见。EC-T组和TP组患者1-2级恶心/呕吐的发生率分别为71.7％和38.7％(P=0.000 3),3-4级恶心/呕吐的发生率分别为21.7％和3.2％(P=0.002);TP组和EC-T组患者1-2级血小板减少症的发生率分别为32.3％和8.3％(P=0.001),3-4级血小板减少症的发生率分别为9.7％和0％(P=0.008)。其他3-4级不良反应少见。结论:TP方案对比EC-T方案明显提高三阴性乳腺癌pCR率,BRCA1是否突变未发现影响铂类方案疗效,整体两组不良反应可以耐受,其中TP组血小板减少发生率较高。     

Ki-67表达水平检测在乳腺癌新辅助化疗疗效评估中的价值

目的:回顾性分析88例乳腺癌新辅助化疗前、后Ki-67在肿瘤组织的表达情况,探讨Ki-67表达与新辅助化疗疗效的关系,评价其在乳腺癌新辅助化疗中的预测作用.方法:选取2015年9月至2016年9月河北医科大学第四医院乳腺中心收治的88例Ⅱ-Ⅲ期乳腺癌患者,检测新辅助化疗前空芯针穿刺肿瘤组织及术后标本中Ki-67的表达,分析其与新辅助化疗疗效及临床相关病理因素的关系.结果:新辅助化疗的临床总有效率为59.09%(52/88),Ki-67高表达组对化疗敏感,化疗效果明显优于Ki-67低表达组(P<0.05);新辅助化疗可明显降低Ki-67的高表达率(P<0.01);新辅助化疗后Ki-67表达下降组化疗有效率显著高于其他组(P<0.05).结论:Ki-67在乳腺肿瘤组织中的表达可作为新辅助化疗疗效临床评价指标之一,预测新辅助化疗的疗效,为个体化治疗提供依据.