冰微粒致孔制备聚羟基丁酸酯(PHB)多孔支架

目的以冰粒子为致孔剂,用粒子滤出—冷冻干燥复合工艺制备PHB多孔支架。方法本实验以氯仿为溶剂,将PHB溶液浇入预先排列好的冰微粒空隙中,采用真空渗流方法制备冰微料-PHB复合体,液氮冷却成型后,用粒子滤出—冷冻干燥复合工艺制备多孔支架。通过扫描电镜(SEM)观测,研究该制备工艺对支架形貌的影响。结果制备的块状三维多孔支架孔径可调、孔隙结构良好、孔隙连通度高。结论本文工艺所制备的多孔支架无致孔剂残留,孔隙率高,孔隙连通度高,制备过程不会损害材料的生物相容性,可安全地用于组织工程可降解聚合物多孔支架的制备。     

论舒适护理的美学要求

基于舒适护理是人在生理、心理、社会、精神上达到的最愉快的状态，提出舒适护理的美学要求体现在生理、心理、社会和精神舒适等方面。     

乳腺组织瓣乳头内陷矫正术

目的　为提高乳头内陷的治疗效果而进行手术方法改良。方法　自 1993年以来 ,采用一种新的乳头内陷整复方法—乳腺组织瓣乳头内陷矫正术治疗乳头内陷 12例 (11例双侧 ,1例单侧 )。结果　术后切口均 1期愈合 ,无乳头血运障碍发生。随访 1～ 3a ,无 1例复发 ,乳头感觉良好 ,形态满意。结论　该法具有操作简便 ,效果可靠 ,乳头形态好 ,无血运和感觉障碍等优点 ,值得推广应用。     

桥小脑角入路术后脑脊液鼻漏

目的探讨桥小脑角开颅术中减少脑脊液(CSF)鼻漏产生的措施及治疗原则。方法结合文献报道，回顾性分析240例桥小脑角区手术后CSF鼻漏的临床资料。结果术后并发8例CSF鼻漏，均因颞骨气腔区骨质破坏，CSF经咽鼓管流出所致。结论掌握颞骨气腔区形成的解剖特点，减少骨质破坏，加强封闭可能的漏口，可有效地减少鼻漏发生。     

亚热带钨矿井下凿岩作业局部振动危害的调查

本文对亚热带钨矿井下凿岩工的局部振动危害进行了调查,发现接振组主诉申枴8例,占10.96%,用5℃冷水诱发试验检出振动性白指3例,占4.11%;发展为振动性白指的工龄为3～7年;接振组主诉头痛、手麻、手冷,手多汗等症状,和手部触觉嵴试验以及听力测定均与对照组有显著性差异。作者认为,在亚热带从事局部振动作业人员,也可发生振动病。     

组织特异性胞嘧啶脱氨酶和5-氟胞嘧啶热化疗对裸鼠结肠癌肝脏转移的影响

Objective To investigate the effects of tissue specific cytosine deaminase/5-fluorocytosine (CD/5-FC) thermotherapy on hepatic metastasis of colonic carcinoma in nude mice. Methods Forty-five nude mice were randomly divided into control group, 5-FC group and 5-FC thermotherapy group according to the random number table (15 mice in each group). Mice models of hepatic metastasis of colonic carcinoma were established by portal vein injection of LoVo/CEACD cells. The hepatic metastasis rate and number of metastatic nodules of the 3 groups were compared by ehi-square test and one-way ANOVA. The pathological changes in tumor tissues and apoptotic index of tumor cells were observed. The expression of the CD gene in tumor tissues was detected by fluorescent quantitative RT-PCR and Western blot. Results The number of metastatic nodules and liver metas-tasis rate were 4.6±1.3 and 100.0% in control group, 2.2±1.0 and 60.0% in 5-FC group, 0.5±0.8 and 13.3% in 5-FC thermotherapy group, with statistical difference among the 3 groups (F=25.898, χ2=5.208, 19.548, 5.168, P<0.05). The mean apoptotic indexes of tumor cells of the 3 groups were 4.6%, 9.9% and 17.4%, respectively. Vacuolar degeneration, cell necrosis, cytolysis and apoptotic bodies were mostly observed in the 5-FC thermotherapy group. The expression of CD gene in tumor tissue was detected in all the groups. Conclusion Tissue specific CD/5-FC thermotherapy has inhibitory effects on the hepatic metastasis of LoVo cells transfected with CD gene.     

卵巢癌和饮食习惯的关系

近年来,在女性生殖系统恶性肿瘤中,尽管子宫颈癌的死亡率在下降,但是卵巢癌的死亡率,不论在日本还是在其他国家都在增加。虽然日本在卵巢死亡率比其他各国低,但是增加速度快。这种倾向使人怀疑卵巢癌发生率同环境因素有关,特别是和饮食习惯欧化有关。纵观各国卵巢癌的患病率和死亡率,有人报告和各国每人脂肪摄取量成正相关,摩门教徒和星期六基督降临日教徒禁止吸烟和饮酒,推崇吃蔬菜和水果,并且告诫不要过食肉类,因而他们卵巢癌死亡率就     

理痰汤治疗婴幼儿哮痰证100例

理痰汤为张锡纯所制。本文应用该方治疗婴幼儿哮痰证(喘哮性支气管炎),收到良好效果,兹将1985年冬～1986年春所治的100例报告如下。方剂组成生芡实10克清半夏4克黑芝麻3克柏子仁2克生杭芍2克陈皮2克茯苓片2克。临床资料100例均为我院哮喘专病门诊病例。其中男62例,女38例,年龄7～12个月44例;～2岁42例,余均3岁以内,计14例。所患疾病均为哮证。治前主证痰壅,病程短者3天,长者月余,多数为7日左