尿激酶治疗窦发性聋的疗效观察

为观察尿激酶治疗突发性聋的临床疗效，对５６例采用尿激酶治疗，每次２０万ｕ静脉滴注，每日１次，辅以盐酸罂粟碱、ＡＴＰ、辅酶Ａ治疗，１０次为１疗程；并与单纯使用盐酸罂粟碱治疗的４８例４９例作比较。     

丹参愈伤组织中次生代谢产物形成的研究

目的：研究诱导培养基中所含激素对丹参愈伤组织中次生代谢产物形成的影响。方法：将丹参外植体培养在含不同激素配比的诱导培养基上，并对其愈伤组织中所含次生代谢产物进行分析。结果与结论：２，４-Ｄ抑制水溶性总酚的形成，ＫＴ能提高总丹参酮的含量。     

大鼠脑神经干细胞神经巢蛋白表达的流式细胞术检测

检测胎鼠及成年大鼠脑内神经干细胞特异性抗原神经巢蛋白的表达,判明啮齿类哺乳动物脑内神经干细胞存在的可能性及相应的部位。方法：显微手术下采取胎鼠及成年大鼠大脑与皮质下脑组织,间接荧光法标记ｎｅｓｔｉｎ,以流式细胞术检测。结果胎鼠脑内普遍存在ｎｅｓｔｉｎ阳性细胞,成年大鼠脑室旁组织中也存在ｎｅｓｔｉｎ阳性细胞。     

实验性脑损伤后脑组织内腺苷、肌苷含量的变化及其意义

研究大鼠急性脑损伤后腺苷含量变化及其生代代谢。方法：采用大鼠液压脑损伤模型,用高效液相色谱法测定大鼠脑损伤前后脑皮质内腺苷和肌苷含量。结果：大鼠脑损伤后１０ｍｉｎ,伤侧大脑皮质内腺苷含量即明显升高,与对伤后３０ｍｉｎ升至最高值,伤后２ｈ腺苷含量恢复正常水平。结论腺苷参与继发性脑损伤后的病理生理过程。     

大部脾栓塞术对重型地中海贫血患儿免疫功能影响的研究

目的评估大部脾栓塞术后重型地中海贫血患儿免疫功能的变化。方法对６２例患儿行脾大部栓塞术。结果ＩｇＧ在术后１周（１３±４ｇ／Ｌ）和术前（１６±６ｇ／Ｌ）差异有显著意义（Ｐ＜０．０５），术后３周恢复术前水平（１６±５ｇ／Ｌ）。ＩｇＡ、ＩｇＭ术前及术后各周均无明显差异。Ｔ细胞亚群中总Ｔ细胞数术前（４９±１２）和术后（６０±１２）差异有非常显著意义（Ｐ＜０．０１）。Ｔ辅助淋巴细胞（ＴＨ）术前（３８±９）与术后（４５±７）比较差异有非常显著意义（Ｐ＜０．０１）。ＴＨ／ＴＳ比值术后（１．６±０．３）与术前（１．２９±０．４）比较差异有非常显著意义（Ｐ＜０．０１），而Ｔ抑制淋巴细胞（Ｔｓ）术后（２９±７）与术前（３１±６）比较差异无显著意义（Ｐ＞０．０５）。纤维连接蛋白术后（２４８±７８）与术前（１１８±４１）比较差异有显著意义（Ｐ＜０．０５）。结论ＰＳＥ后免疫功能在术后３周迅速恢复     

增强PHA-LAK细胞诱导激活新途径的研究

自1995年在上海召开第四届全国肿瘤生物治疗会议以来,我国的肿瘤生物治疗研究和应用发展迅速并取得了新的进展;与此同时,国外又涌现出许多新的理论和方法.因此,召开一次有关的全国性专业学术会议将对我国肿瘤生物治疗的深入研究及临床应用乃至未来的发展具有重要意义.由中国免疫学会肿瘤免疫与生物治疗专业委员会、中国抗癌协会肿瘤生物治疗专业研究会及中华医学会肿瘤学会联合主办的“第五届全国肿瘤生物治疗会议”于1997年9月21～25日在四川成都召开.这次会议共收到稿件429篇,为历届肿瘤生物治疗会议之最,也表明目前国内肿瘤生物治疗研究之兴盛.其中,21篇作了大会发言;203篇以摘要形式在《中国肿瘤生物治疗杂志》上发表;120篇参加了分组讨论.这次会议的主要议题是:(1)总结和交流自第四次全国肿瘤生物治疗会议以来我国肿瘤生物治疗领域的基础研究及临床工作,对此作出恰当的评价并增进对国外最新进展的了解;(2)介绍各单位在肿瘤生物治疗领域的研究及临床工作,从而加强国内同行彼此之间的交流与合作;(3)学习肿瘤生物治疗的规范化要求、新药技术的审评要求以加强对肿瘤生物治疗研究及应用的管理;(4)通过了解与学习国外该领域的最新进展,根据我国的国情以及研究基础提出国内肿瘤生物治疗领域今后的发展     

Alterations of theTP53 gene and TP53 protein expression in epithelial ovarian cancer before and after chemotherapy

Background A role for theTP53 (alias p53) tumor-suppressor gene in chemoresistance has recently been discussed, but little is known about the clinical relevance of theTP53 gene to chemoresistance. To elucidate the relevance ofTP53 status to chemoresistance, we investigated theTP53 gene and TP53 protein expression in tumors from the same patients, before and after chemotherapy. Methods Twenty-one patients with ovarian cancer, who had residual disease after primary surgery, were studied. These patients received chemotherapy consisting of cisplatin, doxorubicin, and cyclophosphamide, and then underwent a second surgery. Polymerase chain reaction-single strand conformation polymorphism analysis and cycle sequencing were performed to determineTP53 mutation. TP53 protein was detected by Western blot analysis. Results Of the 21 patients studied, 9 responded to chemotherapy. Mutation of theTP53 gene was seen in 7 patients (2 responders and 5 nonresponders) before chemotherapy. After chemotherapy, another mutation of the gene was observed in 5 patients, all of whom were nonresponders. TP53 protein was detected in 10 patients (3 responders and 7 nonresponders) before chemotherapy. After chemotherapy, the expression of TP53 protein increased in these 3 nonresponders, and became positive in 2 other nonresponders. Conclusions This study showed for the first time in clinical investigation that alterations toTP53 could develop in association with chemotherapy, and thatTP53 status may relate to the mechanisms of chemoresistance in patients with epithelial ovarian cancer.     

复方茵陈蒿汤对兔奥狄氏括约肌肌电活动及胆总管压力的影响

目的:揭示奥狄氏括约肌肌电活动与机械收缩的关系和复方茵陈蒿汤治疗胆石症的作用机制。方法:采用同步记录技术,动态观察灌胃前后兔奥狄氏括约肌肌电活动及胆总管压力的变化。结果:胆总管压力波动与括约肌肌电发放在时程上一致,药后30～75min,括约肌肌电脉冲频数明显增加,其增值明显高于相应时间的给予等量水灌胃的对照组(P<0.05,60min,P<0.01),胆总管压力无相应的升高。结论:奥狄氏括约肌肌电活动与机械收缩相藕联,复方茵陈蒿汤通过兴奋括约肌肌电活动,增强括约肌的节律性舒缩,促进胆汁排放。     

Effects of the glucoprotein component of musk on functions of rat polymorphonuclear leukocytes activated by LTB4 in vitro]

To investigate the effects of musk-1, a glucoprotein component isolated from the water extract of musk, on some functions of rat polymorphonuclear leukocytes activated by LTB4, an in vitro incubation system with rat polymorphonuclear leukocytes was used. The superoxide anion production was determined by cytochrome C reduction, and the beta-glucuronidase and lysozyme release was quantitated by enzyme reactions in which phenolphthaleinglucuronic acid and micrococcus lysodeikticus were used as the substrates. In comparison with the control, musk-1 at final concentrations of 1 microgram/ml-100 micrograms/ml can increase the superoxide anion production by 28.7%-202.1% and decrease the beta-glucuronidase and lysozyme release by 3%-46% and 6%-32% respectively in rat polymorphonuclear leukocytes. It is concluded that musk-1 can significantly affect the functions of rat polymorphonuclear leukocytes activated by LTB4. One of the mechanisms of this anti-inflammatory action of musk may consist in the inhibition of lysosomal enzyme release.