p185,p170、Ki-67和CD44V6的表达与原发性乳腺癌预后的关系

目的 探讨p185、p170、Ki-67和CD44V6表达与原发性乳腺癌分期、淋巴结转移和预后的关系。方法 采用免疫组化S-P法对160例原发性乳腺癌组织进行p185、p170、Ki-67和CD44V6的检测。结果 随着肿瘤分期的提高,p185、p170、Ki-67和CD44V6的阳性表达均明显增加。p185、Ki-67和CD44V6表达在腋窝淋巴结转移病例明显高于无腋窝淋巴结转移病例(P<0.05或P<0.001),p170表达在转移组亦有增高趋势(X2=2.4)。4种标志物在死亡组病例的表达高于生存组(P<0.05或P<0.001)。结论p185、p170、Ki-67和CD44V6联合检测对于判断乳腺癌预后和指导治疗有实用价值。     

An individual patient-based meta-analysis of tamoxifen versus ovarian ablation as first line endocrine therapy for premenopausal women with metastatic breast cancer

Increased dietary fat intake and rate of breastepithelial cell proliferation have each been associated withthe development of breast cancer. The goal ofthis study was to measure the effect ofa low fat, high carbohydrate diet on therate of breast epithelial cell proliferation in womenat high risk for breast cancer. Women wererecruited from the intervention and control groups ofa randomized low fat dietary intervention trial, breastepithelial cells were obtained by fine needle aspiration,and cell proliferation was assessed in these samplesusing immunofluorescent detection of Ki-67 and PCNA. Theeffects of needle size and study group oncell yield and cytologic features of the cellswere also examined. Fifty three women (20 inthe intervention group and 33 in the controlgroup) underwent the biopsy procedure. Slides from 38subjects were stained for Ki-67 and from 14subjects for PCNA. No cell proliferation (fluorescence) wasdetected for either Ki-67 or PCNA in anyof the slides. Epithelial cell yield and numberof stromal fragments were greater with a largerneedle size. Numbers of stromal fragments and bipolarnaked nuclei were greater in the low fatas compared to the control group but nodifferences in epithelial cell yield were observed betweenthe two groups. This study confirms that fineneedle aspiration biopsy is a feasible method ofobtaining epithelial cells from women without discrete breastmasses, but suggests that cell proliferation cannot beassessed using Ki-67 and PCNA in such samples.     

No association between immunohistochemical expression of p53, c-erbB-2, Ki-67, estrogen and progesterone receptors in female papillary thyroid cancer and ionizing radiation

An association has previously been reported between exposure to medical diagnostic ionizing radiation and papillary thyroid cancer in women. To further evaluate potential mechanisms in carcinogenesis, the expression of p53, c-erbB-2, as well as Ki-67, estrogen and progesterone receptors were analyzed by immunohistochemistry in 19 women exposed to X-rays and for comparison in nine women without such reported exposure. They all had papillary thyroid cancer. No difference was found between these groups. The results of this study showed that p53, c-erbB-2, Ki-67, estrogen and progesterone receptors are not involved in papillary thyroid cancer associated with exposure to medical diagnostic ionizing radiation.     

应用组织芯片技术研究bcl-10、TopoⅡα及Ki-67在MALT型淋巴瘤中的表达和意义

目的应用组织芯片技术研究bcl蛳10、TopoⅡα及Ki蛳67在MALT型淋巴瘤中的表达及意义。方法建立包含84例MALT型淋巴瘤、7例弥漫性大B细胞淋巴瘤(DLBCL)、17例其他肿瘤及18例淋巴结反应性增生,共252点阵的组织芯片,应用免疫组织化学技术(S蛳P法)检测bcl蛳10、TopoⅡα及Ki蛳67在MALT型淋巴瘤中的表达。结果Ki蛳67、TopoⅡα的表达在ⅠE期与Ⅱ2E+Ⅲ期之间差异有显著性(P<0.05),并且与临床分期呈正相关(r=0.423,P=0.000;r=0.299,P=0.016)。淋巴结反应性增生中生发中心B细胞胞质大量表达bcl蛳10,边缘区中等量表达,在套区B细胞较少表达;在MALT淋巴瘤中,bcl蛳10核型表达7例(8.33%),胞质型表达27例(32.14%)。bcl蛳10胞质表达在低度和高度恶性MALT型淋巴瘤中差异有显著性(P<0.05);但与临床分期无关。核型表达者与肿瘤细胞浸润有关。结论MALT型淋巴瘤中TopoⅡα与Ki蛳67的作用相似,它们可作为预后评价的指标。bcl蛳10表达广泛地存在于MALT型淋巴瘤中,该基因异常表达可能与肿瘤恶性程度有关,可作为判断预后的指标之一,核表达可能与病情的进展有关,与肿瘤侵袭行为有关。     

神经母细胞瘤血管内皮细胞生长因子、Ki-67抗原表达及微血管密度研究

目的 探讨血管内皮细胞生长因子（VEGF）、瘤内微血管密度（MVD）与神经母细胞瘤（NB）细胞增殖及预后的关系。方法 采用S-P免疫组化法，检测VEGF、CD34和Ki-67抗原在21例NB中的表达及MVD计数。结果 VEGF及Ki-67表达与NB病理分型及核分裂指数有关（P〈0．05或P〈0．01），而与NB分化与否、肿瘤大小及性别无关。MVD值在临床各病理参数间差异无显著意义。VEGF表达与MVD值、VEGF与Ki-67表达呈明显正相关（P〈0．01）。结论 VEGF、Ki-67表达与NB细胞增殖及预后密切相关。     

Proliferation, Vascular Endothelial Growth Factor Expression and Cavernous Sinus Invasion in Growth Hormone Secreting Pituitary Adenomas

Summary  Surgical cure of growth hormone producing pituitary adenomas (GHomas) becomes difficult when they invade the cavernous sinus (CS). Tumour proliferative activity and angiogenesis are thought to be required for tumour growth and invasion, and vascular endothelial growth factor (VEGF) activates neovascularization around tumours. In this study, the mechanism and clinical significance of CS invasion is analysed. In 25 surgically treated GHomas, the extent of CS invasion was classified as high (Knosp's grade 3 and 4), and low (grade 0, 1 and 2) MR grades, and the MR grades were compared with tumour proliferative potential (Ki-67 expression), angiogenetic demand (VEGF expression), volume of adenomas and serum hormone levels.  The Ki-67 index of high MR grade adenomas (1.17±0.62%) was significantly higher than that of low MR grade adenomas (0.55±0.42%, p=0.027), whereas VEGF expression showed no significant correlation with MR grades (p>0.999). Tumour volume also showed a significant correlation with MR grade (p=0.002). VEGF expression was not correlated with serum hormone level and volume, but was correlated with tumour proliferative potential. Proliferative potential and tumour volume were two independent factors related to CS invasion. Although VEGF expression was not a direct factor related to CS invasion, it may indirectly play a role in activation of tumour aggressiveness, which is required in CS invasion.  Our results show that high MR grade adenomas have higher proliferative ability. In order to improve the surgical outcome, pre-operative medical debulking is indicated, particularly, in such adenomas.     

胃肠道间质瘤中PCNA和 Ki-67的表达及其意义

目的探讨PCNA和Ki-67的表达与胃肠道间质瘤(GIST)临床病理学特征的关系及其相关性。方法应用免疫组化SP法观察40例胃肠道间质瘤中PCNA和Ki-67的表达。结果40例GIST中有26例表达PCNA,24例表达Ki-67,阳性表达率分别为65.0%和60.0%。PCNA和Ki-67的表达与组织学分级有关(P<0.01),两者的表达具有正相关性(r=0.471)。结论PCNA和Ki-67在胃肠道间质瘤的发生、发展中发挥作用,两者可作为判断GIST良恶性的客观指标。     

Ki67在卵巢癌中的表达及临床意义

采用免疫组织化学SP法检测Ki67在20例卵巢良性肿瘤、10例交界性肿瘤、42例卵巢癌中的表达,并分析它们与卵巢临床病理指标的关系。结果:卵巢良性肿瘤KI指数为2.00±1.22,交界肿瘤为10.20±5.03,卵巢癌为35.20±15.20,三组比较,差异显著(P<0.01);Ⅲ~Ⅳ期卵巢癌KI指数为35.75±12.30,显著高于Ⅰ~Ⅱ期卵巢癌的22.00±11.20(P<0.01);中低分化癌KI指数为34.17±9.08,显著高于高分化癌的22.88±10.02(P<0.01);卵巢癌Ki指数与组织类型、淋巴转移无关(P>0.05)。结果表明,卵巢癌中Ki67表达显著高于卵巢良性交界肿瘤,可作为鉴别良恶性肿瘤的指标;其表达与卵巢癌的临床分期、病理分级有关。     

金属硫蛋白在食管鳞癌中的表达及其与增殖凋亡的关系

目的:探讨金属硫蛋白在食管鳞癌中的表达及其与癌细胞增殖、凋亡的关系。方法:采用免疫组化法检测92例食管鳞癌组织中的金属硫蛋白(MT)、增殖细胞核相关抗原(Ki-67抗原)的表达,并用TUNEL法检测细胞凋亡指数。结果:92例食管鳞癌标本中65例MT呈阳性表达,阳性率为70.6%,明显高于正常食管粘膜上皮组织(3/20,P<0.01);MT表达与食管鳞癌患者年龄、性别、浸润深度及病变长度无关,而与组织分化程度、TNM分期、淋巴结转移密切相关,MT与Ki-67抗原表达强度呈正相关,Pearson列联系数=0.227(P<0.05)。随MT表达强度的增加,癌组织凋亡指数逐渐降低。结论:MT表达与食管鳞癌的发生、发展密切相关,MT能促进癌细胞增殖,抑制细胞凋亡,可作为食管鳞癌治疗的新靶点。