联合内分泌治疗对前列腺和睾丸的影响

目的 探讨抑那通和缓退瘤联合治疗对正常前列腺,增生的前列腺（ＢＰＨ）和前列腺癌以及睾丸的作用。方法 对１６例接受联合内分泌治疗至少３个月且有治疗前后病理资料的前列腺癌患者的标本进行了系统的病理学检查。对内分泌治疗后的睾丸标本与同龄未接受治疗的进行对照研究。结果 １４例内分泌治疗后的前列腺标本２例未见残存癌灶,９例对治疗有明显的反应;３例对治疗反应差,治疗并未降低前列腺癌的病理分期。３例内分泌治疗后     

人和兔雪旺氏细胞的体外培养及形态学观察和生物特性研究

雪旺氏细胞(Schwann cell,SC)在神经再生过程中起着重要作用。我们取人胚及兔之坐骨神经,采用“植块多次移出法”培养出纯净度达99％的人和兔的SC。对培养的SC进行了冻存和复苏处理,复苏后的细胞可保持原有的生长特性。     

HIV-1 infected mononuclear phagocyte secretory products affect neuronal physiology leading to cellular demise: relevance for HIV-1-associated dementia

Viral and cellular products from HIV-1-infected and/or immune competent mononuclear phagocytes (MP) (brain macrophages and microglia) affect neuronal function during HIV-1-associated dementia (HAD). Neurotoxic MP factors include, but are not limited to, pro-inflammatory cytokines, chemokines, platelet activating factor, arachidonic acid and its metabolites, nitric oxide, progeny virions and viral structural and regulatory proteins. The mechanisms for immune-mediated neural injury in HAD, only now, are being unraveled. In this regard, we reviewed the current knowledge of how postmitotic neurons, which can neither divide nor be replaced, are damaged by MP secretory activities. Linking neuronal function with brain MP activation was made possible by placing viral and/or immune products onto neurons and measuring cell signaling events or through ex vivo electrophysiological tests on MP-treated brain slices. Such linkages are shown, in this report, by select demonstrations of MP factors which cause neuronal dysfunction in HAD.     

Abrogation of head and neck squamous cell carcinoma growth by epidermal growth factor receptor ligand fused to pseudomonas exotoxin transforming growth factor alpha-PE38.

PURPOSE: This study was undertaken to determine whether low intratumoral doses of the epidermal growth factor receptor ligand-transforming growth factor alpha (TGF-alpha) fused to Pseudomonas exotoxin (TGF-alpha-PE38)-abrogated head and neck squamous cell carcinoma (HNSCC) tumor growth in vitro and in vivo. EXPERIMENTAL DESIGN: In vitro cytotoxicity assays were carried out to determine the sensitivity of HNSCC cells to TGF-alpha-PE38. TGF-alpha-PE38-treated HNSCC cells were examined by immunoblotting for cleaved poly(ADP-ribose) polymerase to evaluate apoptosis. Nude mice bearing established HNSCC xenografts were treated with several doses of TGF-alpha-PE38 to evaluate the antitumor efficacy in vivo. Tumor sections were stained with terminal deoxynucleotidyl transferase-mediated nick end labeling for apoptosis. To determine the effect of oral administration of TGF-alpha-PE38, gavage injections of TGF-alpha-PE38 were administered, and the esophagus and surrounding soft tissue were then stained for apoptotic cells. RESULTS: HNSCC cell lines examined were sensitive to low doses of TGF-alpha-PE38 (EC(50) in the range of 1.6 to 10 ng/mL). HNSCC cells treated with TGF-alpha-PE38 undergo apoptosis. Antitumor effects were observed using 0.1 and 0.03 microg of TGF-alpha-PE38 administered intratumorally. At these doses, the treatment was well tolerated. Tumors treated with the toxin had a higher number of apoptotic cells compared with the control tumors. No apoptotic cells were observed in the pharyngoesophageal tissues of the mice after gavage administration of the toxin suggesting that the toxin could be orally administered without toxicity. CONCLUSIONS: These results indicate that topical or intratumoral administration of low doses of TGF-alpha-PE38 may demonstrate antitumor effects in HNSCC without associated systemic toxicity.     

HPLC法测定复方阿替洛尔片中阿替洛尔与硝苯地平的含量

目的:采用高效液相色谱法考察并建立测定复方阿替洛尔片中阿替洛尔与硝苯地平含量的方法。方法:色谱柱为Phe-nomenex—ODS 3柱(250 mm×4.60 mm,5 μm),甲醇-水-磷酸盐缓冲溶液(取磷酸二氢钾6.8 g,加水1000 mL溶解后,用磷酸调pH至3.0)-庚烷磺酸钠适量摇匀(65:35:3:0.13 g=V:V:V:W)为流动相,流速为1.0 mL·min～1,检测波长为240 nm,进样量为10μL。结果:阿替洛尔的线性范围为10-250μg·mL-1(r=0.9999),硝苯地平的线性范围为4—100 μg·mL-1(r=1.0000),平均回收率分别为99.45％和99.51％。结论:本法精密度好,结果准确可靠,适用于该复方制剂的质量检验分析。     

喉全切除发音重建术远期疗效分析

One hundred and twenty-five patients received voice rehabilitation operations following total laryngectomy over the period from August 1977 to December 1994. Among them, 119 were male and 6 were female, the eldest was 70 years old and the youngest 30 years old, and the average age was 55.3 years. Clinical staging was as follows: stage II, 2 cases; stage III, 45 cases; stage IV, 66 cases; and recurrence, 12 cases. The voice rehabilitation operations included pharynx-trachea anastomosis 18 cases and trachea-esophagus fistulization 107 cases. One hundred and fourteen patients were followed-up for 13 months to 18 years. The 3, 5, and 10 year survival rates were 78.2%, 61.4%, and 40.5% respectively. The effective rates of voice rehabilitation according to hearing voice distance were 84.6%, 81.1%, and 67.5% 3 weeks, 1 year, and 5 years respectively after operation. The causes of failure were closure of fistula 15 cases; food aspiration 8 cases and unknown 3 cases. The clinical value, advantages and disadvantages of voice rehabilitation, and the time to evaluate the effect of voice rehabilitation were discussed.     

跨声门癌50例观察

为确立一种原发喉室的跨声门癌，选择肿瘤主体以喉室为中心经全喉切除手术的标本５０例，火棉胶包埋，连续切片观察。结果发现①跨声门癌的肿瘤原发部位在喉室，５０例中有Ｔ２３例。②肿瘤以深层浸润为主占９０％（４５／５０），易侵及声门旁间隙（８２％，４１／５０）和甲状软骨（６４％，３２／５０），临床分期与病理分期不符达４８％（２４／５０）。结论：原发喉室的跨声门癌是声门上型癌的一种特殊类型。     

p16与C—myc在喉鳞状细胞癌中的表达意义

目的：研究p16和C－myc在喉鳞状细胞癌中的表达意义。方法：应从p16和C－myc单克隆抗体，通过免疫组织化学法检测6例正常喉粘膜和47例喉鳞癌中p16和C－myc的表达。结果：6例正常喉粘膜组织中未发现p16和C－myc蛋白阳性表达，47例喉鳞癌中p16和C－myc阳性表达率分别为48．9％（23／47）和57.4％（27／47），与性别、年龄和肿瘤发生的部位无相关性（P＞0．05），与临床分期和病理分级相关（P＜0．05）；C－myc还与颈淋巴结转移相关（P＜0．05）。结论：p16和C-myc蛋白阳性表达在喉鳞癌的发生和发展中起重要作用，可作为评价喉鳞癌预后的新指标。     

鼻咽结核22例报告

报告鼻咽结核22例，5例合并肺结核，16例合并颈淋巴结核。临床诊断注意与鼻咽癌鉴别。颈淋巴结FNA细胞学检查与PCR检测有助于诊断，确诊需病理学检查。全身抗痨治疗，同时应用5％链霉素局部灌洗，可显著提高疗效，缩短病程。对合并巨大的或全身用药不敏感的结核性颈淋巴结炎采取手术切除效果良好。     

电化学治疗转移性体表肿瘤疗效分析

1994年7月至1995年8月采用电化学治疗转移性体表肿瘤53例，其中颜面部2例，颈部32例，胸壁4例，腋窝6例，腰骶部1例，腹股沟8例。总有效率达92％。临床实践表明：电化学治疗体表肿瘤操作方便，安全有效，疗程短，损伤小，无任何并发症，尤其是对应用其他疗法无效的体表肿瘤仍有效。