肺癌组织中血管内皮生长因子受体Flt1及KDR的表达及其与肿瘤转移和预后的关系

①目的　探讨肺癌中血管内皮生长因子受体Flt1、KDR的表达与其转移及预后的关系。②方法　应用免疫组织化学PowerVisionTM PV90 0 0法 ,测定 75例肺癌标本中Flt1、KDR的表达。③结果　肺癌组织中Flt1、KDR的表达较为广泛 ,主要位于肿瘤细胞胞浆及胞膜上 ,纤维母细胞和血管内皮细胞胞浆中亦有表达。Flt1、KDR在肿瘤细胞中的阳性率均显著高于在间质纤维母细胞中的表达 (χ2 =6 .0 7、5 .88,P <0 .0 5 )。肿瘤细胞及纤维母细胞中该两种受体的阳性率在不同年龄、不同性别及不同病理类型、不同病理分级之间差异均无显著性 (χ2 =0 .0 1～4 .84 ,P >0 .0 5 ;P =0 .2 9～ 0 .79)。肿瘤细胞中Flt1、KDR的阳性表达率在 3组不同大小的肿瘤间差异均有显著性(χ2 =1 0 .35、7.2 9,P <0 .0 5 ) ,而纤维母细胞中差异均无显著性 (χ2 =2 .86、2 .5 6 ,P >0 .0 5 ) ;肿瘤细胞及纤维母细胞中Flt1、KDR的阳性率在淋巴结有、无转移两组间的差异均有显著性 (χ2 =4 .72～ 9.32 ,P <0 .0 5 ) ,在 3组不同术后生存时间病人间亦均有显著性差异 (χ2 =8.81～ 1 9.1 9,P <0 .0 5 )。肿瘤细胞中Flt1、KDR的表达呈极显著性正相关 (r =0 .4 4 ,P <0 .0 1 )。④结论　肺癌的生长主要依赖自分泌机制 ,联合检测Flt1、KDR可能对肺癌转移     

腹腔镜诊断和治疗小肝癌临床研究的初步报告

目的　探讨腹腔镜对AFP阳性、而影像学检查阴性的小肝癌的诊断和治疗的价值。方法　对 5例AFP阳性、而B超、CT或 (和 )MRI阴性 ,高度怀疑早期肝癌者 ,进行了腹腔镜探查和手术治疗。结果　 5例均证实为小肝癌 ,肿瘤约 0 8～ 1 0cm ;4例实施了腹腔镜肝部分切除 ,1例中转开腹手术切除肿瘤。随访 4个月至 4年 ,5例均无瘤生存。结论　对AFP持续阳性 >1个月、而B超、CT或 (和 )MRI阴性 ,高度怀疑肝表面小肝癌者 ,进行腹腔镜探查和手术治疗可能是肝表面或肝边缘的小肝癌最佳的诊断和治疗手段。     

吲哚美辛对人结肠癌HCT116和SW480细胞的影响

目的：探讨吲哚美辛对人结肠癌HCT116和SW480细胞的影响。方法：体外培养细胞，采用MTT法分别检测吲哚美辛作用后两系细胞的生长情况，计算半抑浓度（IC50）；体内建立裸鼠皮下移植瘤模型，喂服吲哚美辛3 mg/(kg·d)共4周，隔日测瘤结节体积及鼠重，评价吲哚美辛的抑瘤效果。结果：吲哚美辛作用于结肠癌HCT116和SW480细胞48 h后，细胞的生长均受到明显抑制，呈剂量依赖效应，IC50分别为 (318.2±12.7) μmol/L和 (701.4±29.5) μmol/L；吲哚美辛显著减慢裸鼠皮下移植瘤的生长，用药4周后抑瘤率达44.6%，未见明显毒性反应。结论：吲哚美辛能抑制不表达环氧合酶的人结肠癌细胞（HCT116和SW480）生长，间接说明其抗癌作用不完全依赖环氧合酶途径，还存在其它的可能机制。     

胃上部癌经腹根治术的临床观察

目的探讨经腹根治胃上部癌的手术适应症及对本术式的评价。方法回顾总结1994-2004利用管型消化道吻合器经腹根治手术的125例胃上部癌的临床资料。结果经腹手术创伤小,出血少,并发症少,安全性较好,但亦有局限性。结论经腹手术路径的选择主要应根据肿瘤的具体情况而定,合理掌握指征,对于非贲门上部癌、食管侵犯≤2cm者以及BormannⅠ、Ⅱ型的胃上部癌应优先考虑经腹手术。     

Benign osteoblastoma of the occipital bone: Case report and literature review

We present a case of benign osteoblastoma of the occipital bone. Benign osteoblastoma is an uncommon primary bone tumor, which usually involves the vertebrae and the long bones. This tumor rarely develops in the calvaria, showing a preference for the temporal and frontal bones when it does. To the best of our knowledge, this case is only the eighth reported case of benign osteoblastoma confined to the occipital bone. A 20‐year‐old male presented with a mild tender mass lesion of the occipital area, just below the lambda. Plain X‐ray films and CT scans demonstrated an osteolytic mass surrounded by the sclerotic rim within the diploic space. MRI proved to be effective for the evaluation of the intracranial and intraosseous extensions of the tumor. However, it was very difficult to formulate a differential diagnosis against other osteoblastic tumors, or osteoid osteoma, in view of its radiological appearance. The final diagnosis was obtained by careful consideration of the histopathological characteristics of the tumor combined with its clinical and radiological features. Although generally regarded as benign, a complete resection is preferred over conventional curettage as this can guard against possible recurrence and malignant transformation.     

Malignant Rhabdoid Tumor of the Breast: A Case Report

A 66-year-old woman time of 10 days. One month after radicalmastectomy, there was local recurrence, followed by multiplepulmonary metastases, and the patient died of respiratory failure5 months after surgery. The gray-white-colored tumor measured13x12x;10 cm, and its border was well defined. The tumor wascomposed of diffusely growing round or polygonal cells withvesicular nuclei, prominent nucleoli, and ample cytoplasm containingeosinophilic inclusions. Lymph node involvement was widespread.Both vimentin and keratin were clearly demonstrated by immunohistochemicalstaining. Ultrastructural studies revealed that the MRT cellscontained cytoplasmic whorls of intermediate filaments.     

食管癌、胃癌组织的低密度脂蛋白受体分析

以１２５Ⅰ－ＬＤＬ为配体对食管癌、胃癌及其相应的正常组织进行了ＬＤＬ受体水平的测定，同时分析了各组织中蛋白质、ＤＮＡ的含量，以探讨食管癌和胃癌发生与ＬＤＬ代谢之间的关系。结果显示，癌组织和正常组织的ＬＤＬ受体亲和性差异无显著性，但癌变组织的蛋白质、ＤＮＡ和ＬＤＬ受体水平均明显高于相应正常组织。癌细胞需要大量的胆固醇满足其有丝分裂，细胞通过受体升高机制使ＬＤＬＲ增多，以增加对ＬＤＬ的摄取和利用。     

Expression of ɛBP, a β-galactoside-binding soluble lectin, in normal and neoplastic epidermis

Abstract The study of animal lectins and glycoconjugates has become an important area of research in biomedical sciences, as these molecules are believed to play important roles in a variety of biological processes. This report describes a study of the expression of an animal lectin, IgE-binding protein (?BP), also known as Mac-2 and CBP35, in human skin. We have analyzed cultured human keratinocytes as well as normal human skin and a number of epidermal neoplasms, by immunoblotting. immuno-fluorescence and immunohistochemistry. We showed that ?BP is expressed in human keratinocytes, hair follicles, sebaceous and sweat glands. We found that cBP expression retains in various epidermal neoplasms, including basal cell carcinoma, squamous cell carcinoma and keratoacan-thoma, although the level of expression appears to be reduced as compared to normal epidermis. The immunohistochemical analysis also suggests that the level of ?BP expression appears to be dependent on the degree of cellular differentiation of keratinocytes.     

血清脂质结合唾液酸测定对肺部病变的诊断价值

本文介绍正常人113名,肺部恶性病变49例及肺部良性病变33例的血清LSA测定结果,正常人血清LSA含量平均值为0.1243±0.0358g/L。特异性97.40％,男女间无差异,48例肺癌血清LSA平均值0.2698±0.0915g/L,敏感性85.40％;33例良性病变LSA平均值0.1712±0.0767g/L,特异性78.79％。肺癌患者血清LSA较良性病变明显升高,故测定血清LSA对鉴别良恶性病变有一定价值。     

912抗肿瘤作用机理的初步探讨

作者对912的抗肿瘤作用机理进行了初步探讨。观察到912对癌细胞的移植量以及不同的服用时间均表现出不同的抑瘤效应。将服用912后的小鼠的脾细胞与肿瘤细胞混合后再接种,肿瘤生长明显抑制。912对实验肿瘤动物的外周血白细胞分类、巨噬细胞的吞噬功能和E玫瑰花形成也有一定的影响。