尿流改道术后输尿管肠代膀胱吻合口狭窄的腔内治疗

目的 探讨腔内技术治疗尿流改道术后输尿管肠代膀胱吻合口狭窄的临床应用价值.方法 膀胱癌尿流改道术后输尿管肠代膀胱吻合口狭窄患者9例,狭窄段长度1～3 cm,均采用腔内技术治疗,顺行经皮肾处理8例,逆行输尿管镜处理1例;术中使用高压气囊配合筋膜扩张器扩张,术后留置双J管.结果 随访0.5～5.0年.1例吻合口闭锁患者术后3个月仍为重度积水,患者拒绝开放手术而长期留置肾造瘘管;8例患者肾积水减轻,再次逆行扩张狭窄段并留置双J管,其中5例经2～3次扩张换管,拔除双J管后复查肾积水稳定于轻度状态;3例拔除双J管后腰痛不适,需要长期留置双J管.结论 尿流改道术后输尿管肠代膀胱吻合口狭窄腔内技术治疗效果良好,可避免开放手术的风险.     

崇文区健身器材卫生状况调查

目的：了解健身场所健身器材的卫生状况,为制定卫生标准提供依据。方法：随机抽取14家健身场所的健身器材为调查对象,选择营业高峰期间对其健身器材进行检测。结果：健身俱乐部的健身器材微生物污染程度高于健身附属场所,大型健身场所微生物污染程度明显高于中型、小型场所,操厅的微生物污染相对于有氧区、力量区严重,健身器材中以扶杆、健身球、形体垫子及力量机的微生物污染最为严重。结论：健身器材的微生物污染严重,从业人员缺乏卫生消毒知识,应尽早将健身场所纳入《公共场所卫生管理条例》管理范畴,并制定相应的国家卫生标准,加强对从业人员的卫生宣教,从而有效改善健身器材卫生状况。     

~(60)钴辐射降低海产食品中亚硝胺及前体物的研究

~(60)钻辐照能有效地降低食品中亚硝胺及亚硝酸盐含量。虾皮含54.6ppb NDMA,经~(60)钻照射10和20 kGy后,NDMA分别减少83.9％和96.6％。其作用在水溶液中优于食品样。亚硝胺的主要降解产物是相应的胺和亚硝酸,降解后无重合成现象。水分可以影响辐射破坏亚硝胺。~(60)钻辐射对硝酸盐无分解作用。     

兔动静脉短路环法诱导组织工程骨支架材料血管生成的初步研究

Objective To compare the effects of 2 vascular carriers, arteriovenous loop and arteri-ovenous bundle, on inducing angiogenesis in coral scaffold of vascularized tissue-engineered bone in animal models.Methods Thirty-six adult male New Zealand rabbits were randomized into 2 even groups.In group A, an arteriovenous loop (AVL) was formed by microsurgical anastomosis at the proximal ends between the femoral poptiteal artery and vein, and placed in the circular side groove of the coral block (6 mm × 8 mm × 10 mm) .In group B, flow-through vessels bundles of both femoral artery and vein were placed in the side grooves of the coral block.All the implants in 2 groups were wrapped by a micro-porous expand-ed-polytetrafluoroethylene (ePTFE) membrane, and fixed subcutaneously by suturing.Evaluation methods included gross morphological observations, histological examinations, India ink perfusion and vascular casting after 2, 4, 6 weeks.The density of blood vessels was analyzed by the statistical software SPSS 10.0.Results All the corals were encased by newly formed fibrovascular tissues in 2 groups.Ink-stained vessels distributed the surfaces and side grooves, and invaded the interspaces of corals.The degree of vascularization increased over the course of experiment.Blood vessel density demonstrated a significant continuous increase between 2 and 6 weeks after implantation in group A.The mean value of blood vessel density in group A (2 weeks 276.60±4.67, 4 weeks 517.20±10.66, 6 weeks 707.00 ±11.87) was significantly higher than in group B (2 weeks 153.60 ±7.16, 4 weeks 269.40±6.80, 6 weeks 279.20±6.53) (P <0.01).Vascular casting showed that in group A, significant blood vessels sprouted from all areas of the loop, espe-cially at the entrance of the arteriovenous pediele where the small tubes were densely interconnected.In group B, however, no blood vessels sprouted from the arteriovenous bundles and only some small vessels grew from the entrance and exit.Conclusions A vascularized coral model can be constructed by inserting an ar-teriovenous loop or an arteriovenous bundle, useful in vascular bone tissue engineering.The former, however, have stronger abilities to induce angiogenesis than the latter.     

Hunt综合征血酯酶标记T细胞动态观察

成人带状疱疹偶而侵犯面神经膝状节,引起以面神经瘫痪为主的一组症状,名为Hunt综合征。本文报告12例,并作了外周血酯酶标记T细胞的动态观察。 一般资料 12例中男8例,女4例。平均年龄为40.9(16～70)岁。病前患有感冒发烧史者5例,另7例伴有其它慢性躯体疾病。临床表现:耳部疱疹12例(右侧8例,左侧4例);耳部剧痛11例,轻度发烧2例,患侧头痛1例;眩晕9例(其是1例不能站立、2例伴有恶     

以零价铜为催化剂的“活性”可控自由基聚合反应

研究了零价铜为催化剂,以ＣＣｌ４为引发剂,在２,２’－邻二吡啶（ｂｐｙ）或１,１０－邻二氮菲（ｐｈｅｎ）存在下的苯乙烯或甲基丙烯酸甲酯的“活性”／可控自由基聚合反应。研究结果表明：聚合过程中ｌｎ（［Ｍ］ｏ／［Ｍ］）与反应时间成线性增长关系,同时生成的聚合物的数均分子量与单体转化率也成线性增长关系,聚合过程呈现“活性”特征。     

非布司他原料2种含量测定方法的比较研究

目的建立并比较滴定法和高效液相色谱法测定原料中非布司他含量。方法化学分析法,用乙醇作为溶剂,氢氧化钠溶液为标准溶液,酚酞为指示剂进行滴定。高效液相色谱法,采用Inertsil ODS-SP(250mm×4.6mm,5μm)色谱柱;流动相为1mL·L-1磷酸溶液(三乙胺调pH值至2.4)-乙腈(45∶55);流速为1.5mL·min-1;柱温为30℃;检测波长为315nm。结果 2种方法均符合方法学验证要求,测定同一样品,测量值差异无统计学意义(P<0.05)。结论 2种分析方法均能快速、有效地测定原料中非布司他的含量,均可作为非布司他原料质量控制的分析方法。     

新型避光输液器的药物相容性及安全性评价

目的研究避光输液器在临床输注过程中与药物的相互作用以及安全性问题。方法通过对硝普钠、氟罗沙星以及盐酸阿扎司琼3种光敏性药物用避光输液器进行模拟临床输液试验,对流经输液器前后的药液的各项指标进行检测,并对增塑剂TOTM以及避光着色剂在输液过程中的迁移进行检测。结果药物溶液在光照条件下经过避光输液器前后各项指标并无明显变化。增塑剂TOTM与避光着色剂在输液过程中有微量溶出。结论避光输液器与试验药物相容性良好,输液管路中的TOTM与避光着色剂有微量溶出,应用一次性避光式输液器输注光敏感型药物安全可靠。