热休克蛋白27在乳腺癌中的表达及意义

目的:研究热休克蛋白27(Heat Shock Protein27)在乳腺癌中的表达.方法:采用免疫组化方法检测48例乳腺癌组织中的HSP27.结果:HSP27在乳腺癌中阳性表达率为54.17%(26/48).在非浸润性癌和浸润性癌中阳性表达率为75.00%(3/4)和52.27%(23/44).HSP27阳性表达在非浸润性癌和浸润性癌中无明显差别(P＞0.05).HSP27阳性表达与有无淋巴结转移无关(P＞0.05).结论:在乳腺癌中HSP27有较高表达,检测乳腺癌中HSP27对化疗有指导作用.     

Lymphotactin enhances the in-vitro immune efficacy of dendritoma formed by dendritic cells and mouse hepatocellular carcinoma cells

Objective: To investigate the in-vitro antitumor immune responses of dendritoma formed by mouse hepatocellular carcinoma (HCC) cells and lymphotactin (Lptn) gene modified dendritic cells (DCs). Method: DCs prepared from mouse bone marrow were genetically modified by lymphotactin adenovirus, and fused with H22 cells by polyethylene glycol (PEG). RT-PCR and ELISA were employed to identify lymphotactin expression at mRNA and protein level. Cell phenotypes and fusion efficiency was detected by FACS. The stimulatory effect of DC on T cells was detected by mixed lymphocyte reaction. The cytotoxicity activity against H22 cells was assayed by LDH method. Results: Lymphotactin could be efficiently expressed by DCLptn/H22 hybridoma. DCLptn/H22 cells could induce potent T cell proliferation effect and generate strong cytotoxic T lymphocyte (CTL) reaction against allogenic H22 cells. Conclusion: Lymphotactin genetic modification could enhance the in vitro immune activity of the dendritoma.     

Session - 3 December 19, 2007 Cardiovascular risk markers - II

Oral Cancer is one of the five leading sites of cancer in Indian population. The circulating immune complexes were investigated in 100 serum samples of 60 oral cancer patients having different grades of the disease and 40 patients with precancerous lesions obtained from Nair Hospital Dental collage, Mumbai. The results obtained were compared with those of group of 40 healthy blood donors. Elevated levels of Circulating Immune Complexes were observed in oral cancer patients and patients with oral precancerous lesions. 92% positive samples were observed in well differentiated squamous cell carcinoma whereas 100% positive samples were observed in both moderately and poorly differentiated squamous cell carcinoma. Oral leukoplakia and oral submucous fibrosis showed 15% and 90% positivity respectively. Increased level of Circulating Immune complexes in high grade tumor suggest that Circulating Immune complexes is likely to contribute in evaluating the degree of malignancy, but follow up study is needed to draw any conclusion regarding it's prognostic role     

早期大肠癌的结肠镜下高频电凝电切治疗

利用电子结肠镜检查发现早期大肠癌,行内镜下微创高频电凝电切或粘膜切除术,或外科根治术,切下标本全瘤送病理检查。术后定期随访,比较两组的疗效,探讨电子结肠镜下高频电凝电切治疗早期大肠癌的价值。结果表明,结肠镜下高频电凝电切及粘膜切除术治疗早期大肠癌疗效确切,与外科手术相比,既具有简便、损伤小、费用低、安全、微创等优点,又能达到与外科手术切除同样的效果。     

Case Report: Liquid-based cytology aids in primary fallopian tube cancer diagnosis

Primary fallopian tube carcinoma (PFTC) is a rare malignant carcinoma among all genital tract malignancies. It occurs most commonly in postmenopausal women and is similar to ovarian malignancy historically and clinically. Because of its insidious onset and silent course, the diagnosis is made usually postoperatively. Liquid-based cytology (LBC) is a type of method for cervical cancer screening, but sometimes it may aid in making PFTC diagnosis. We report a 47-year-old woman with PFTC, whose diagnosis was made with the aid of LBC.     

Breast metastasis from small cell lung carcinoma

Breast metastases from extramammary neoplasms are very rare. We presented a 66 year-old female with metastasis of small cell lung carcinoma to the breast. She presented with consolidation over the left upper lobe of her lung undetermined after endobronchial or video-assisted thoracoscopic surgery (VATS) biopsy, and this was treated effectively after antibiotic therapy at initial stage. The left breast lumps were noted 4 months later, and she underwent a modified radical mastectomy under the impression of primary breast carcinoma. However, the subsequent chest imaging revealed re-growing mass over the left mediastinum and hilum, and cells with the same morphological and staining features were found from specimens of transbronchial brushing and biopsy. An accurate diagnosis to distinguish a primary breast carcinoma from metastatic one is very important because the therapeutic planning and the outcome between them are different.     

宫颈上皮内肿瘤及宫颈鳞状细胞癌组织中HPV16感染与hTERT，P21^wafl和Ki67表达关系的分析

为了探讨宫颈鳞状细胞癌（SCC）及宫颈上皮内肿瘤（CIN）组织中入乳头瘤病毒（HPV）16感染及端粒酶反转录蛋白（hTERT）、抑癌基因P21^wafl和增生抗原Ki67表达的关系及其意义，在130例正常宫颈组织及宫颈上皮内瘤样病变和宫颈鳞状细胞癌组织中，利用组织芯片技术，结合原位杂交技术，检测HPV16感染及结合免疫组织化学技术检测hTERT，Ki67，P21^wafl的表达．结果表明：1）CINⅡ级、CIN Ⅲ级、原位癌、浸润性鳞癌组织HPV16杂交信号阳性率显著高于正常宫颈组织（P均〈0．05），浸润性鳞癌HPV16阳性率也显著高于CIN（Х^2=5．670，P=0．017）．2）hTERT在CINⅡ级、CINⅢ级、原位癌、浸润性鳞癌组织中的表达都显著高于正常宫颈组织（P均〈0．05），浸涧性鳞癌hTERT表达率也显著高于原位癌及CIN（Х^2=18．870，P=0．000；Х^2=66．390，P=0．000）．CIN三级之间相比差异也具显著统计学意义（Х^=30．468，P：0．000）．3）P21^wafl在浸润性鳞癌组织中的阳性率显著低于正常宫颈组织（P〈0．05），但与CIN相比差异无显著统计学意义（P〉0．05）．CIN三级之间P21^wafl表达差异也无显著统计学意义（P〉0．05）．4）随着宫颈病变组织学严重程度的增加，Ki67表达逐渐增加（P〈0．05）．5）HPV16感染率与hTERT表达之间呈正相关（P〈0．05，r=0．339），与P21”“表达之间呈负相关（P〈0．05，r=0．337），与Ki67表达无相关性（P〉0．05）：hTERT与P21^wafl之间呈负相关（P〈0．05，r=-0．248），与Ki67表达呈正相关（P〈0．05，r=0．398）；P21^wafl与Ki67表达呈负相关（P〈0．05，r=-0．446）．可见：在宫颈上皮内肿瘤及宫颈鳞状细胞癌组织中，hTERT，P21^wafl，Ki67表达改变可能与HPV16感染有关，且几者之间互相作用，共同影响CIN的发展及宫颈鳞癌的发生．这些指标综合分析可能为阐明HPV16的恶性转化机制以及为提高宫颈鳞癌及其癌前病变诊断率提供参考依据．组织芯片技术是高效的研究基因及其表达产物的技术平台．     

Alteration of serum beta 2-microglobulin in oral carcinoma

Serum β₂-microglubin (β₂-m) levels were measured in oral carcinoma patients and compared with normal healthy controls. It was observed that there was a significant rise in serum β₂-microglobulin in oral carcinoma patients. Progressively higher values were obtained as the cancer advanced clinically. Therefore the estimation of serum β₂-microglobulin may be useful as one of a battery of tests in the assessment of oral carcinoma patients.