肠瘘患者腔静脉导管感染的回顾性分析

目的了解肠瘘患者腔静脉导管感染的发生率、细菌菌谱及药敏情况。方法对1998年1月至2001年4月收治的使用腔静脉导管进行全肠外营养(TPN)的肠瘘患者进行回顾性分析。结果216例肠瘘患者,共进行了358次腔静脉置管,腔静脉导管尖端培养阳性的有88次(24.6%),腔静脉导管平均使用时间为(16.9±13.0)d。88次腔静脉导管感染的尖端共培养出95株细菌,其中革兰阴性菌54株,占56.8%;其次为革兰阳性菌35株,占36.8%;真菌6株,占6.4%。根据药物敏感试验结果及临床表现,有16例患者更换了抗生素,4例改用抗真菌药物,所有患者均治愈。结论对于肠瘘患者,腔静脉感染仍是实施静脉营养的主要并发症之一,革兰阴性细菌感染最常见。     

Effect of thyrocytes from transgenic mice expressing thyroid specific MHC class Ⅱ on autologous T lymphocyte in vitro

Thyrocytes expressing MHC class Ⅱ molecules were separated from transgenic mice and were co-cultured with autologous spleen T lymphocytes. T cells did not proliferate and were not activated, but CD4+ T cells were promoted into apoptosis.     

放射线联合p53基因及内皮抑素治疗小鼠前列腺癌皮下移植瘤

Objective To test the hypothesis that p53 gene therapy combined with endostatin can enhance tumor response to radiation therapy of RM-1 mouse xenograft prostate cancer and to investigate its mechanism. Methods A mouse prostate cancer model was established. Then mice with xenograft tumor were randomly divided into group A (control), B (radiation), C (radiation and rAdp53), D (radiation and rh-endostatin) and E (radiation and rAdp53 and rh-endostatin). On day 1, rAdp53 was injected intra-tumorously with 1 × 1010 vp per animal to group C and E. From day 1 to 14, rh-endostatin was given 15 mg/kg intraperitoneally daily to group D and E. On day 4 single fraction of 15 Gy was given to tumors in groups B, C, D and E. Normal saline was injected intra-tumorously or intraperitoneaUy accordingly as control. No treatment was done to group A. Tumor volume was measured daily. Samples were collected on Days 5, 10 and 15. Ki67, CD31, p53 and VEGF were detected by means of immunohistochemistry. Results (1) Radiation alone, radiation combined with intra-tumorous injection of Adp53 and/or intraperitoneal injection of rh-endostatin resulted in tumor growth arrest of RM-1 cells in vivo (P = 0.000). Radiation combined with both rAdp53 and rh-endostatin was the most effective treatment (P < 0.05). (2) All the four treatment groups had a decreased expression of mutant type P53 (P = 0.000). The expression of Ki67 in groups B and C were equal (P 0.05) and increasing (P = 0.000), respectively. Group D had a up-down-up curve (P < 0.05), but group E had a up-down one. On day 5 the expresion of VEGF in group E was the lowest (P < 0.05). An increased expression of MVD compared with the control was shown, and MVD in groups C, D and E were always higher than that in the control (P < 0.05). Conclusions The limitation of radiotherapy could be overcome by combination with beth p53 gene therapy and endostatin on the growth of mouse prostate cancer cell. Radiation, rAdp53 and endostatin have their own role but they can be interacted with each other.     

经前后路联合手术治疗L5S1椎体结核

目的 探讨一期经前路病灶清除后路植骨内固定治疗L5S1椎体结核的临床疗效.方法 对40例L5S1椎体结核患者,采用一期经前路病灶清除椎体间植骨加后路椎弓根螺钉内固定植骨融合治疗.结果 所有患者随访6～24个月,35例植骨融合良好,5例融合欠佳;有1例出现尿路感染.结论 一期经前路病灶清除椎体间植骨加后路椎弓根螺钉内固定椎板植骨治疗L5S1椎体结核能在彻底清除病灶的前提下保证脊柱的稳定性,提高植骨块的融合率和缩短患者卧床时间.     

女性更年期综合征ST-T改变的临床意义

更年期综合征（Climacteric syndrome）系指由于更年期精神心理、神经内分泌和代谢变化，所引起的各器官系统的症状综合症候群。更年期综合征是人生中年向老年过渡时期的一种生理性反应，但有些人症状明显，尤其是在女性，若未充分认识，常误诊为其它疾病。我院自2002-2005年收治更年期综合征女性患128例，其中63例因心电图出现ST-T改变而被疑为冠心病，予以改善冠脉循环治疗，效果不佳，许多患因此产生不必要的精神负担。为此，我们对女性更年期综合征心电图ST-T改变的临床意义作以分析。     

箍效应在前牙核桩冠修复中的作用

目的 观察箍效应在前牙核桩冠修复中对修复体抗折力的影响。方法 选用离体上中切牙20颗，分2组按不同方式制作核桩冠修复体，粘固；用万能测试机加载，测试抗折力。结果 试验组修复体抗折力明显大于对照组，两组差异有显著性意义（P〈0．05）。结论 冠与牙根之间的箍效应对提高核桩冠修复体抗折力有明显的作用。应尽量保留牙体组织，提高冠与牙根之间的箍效应。     

甲氨蝶呤联合小剂量叶酸治疗中重度银屑病疗效观察

目的观察小剂量叶酸配合甲氨蝶呤(methotrexate,MTX)治疗中重度银屑病临床疗效及安全性。方法124例银屑病患者随机分为治疗组与对照组。治疗组62例每周口服MTX7.5～15mg,每日口服叶酸5mg,共8周。对照组62例采用维生素A、维生素E、氨肽素及抗组胺药常规治疗。结果治疗12周和24周后,治疗组与对照组治疗后显效率经卡方检验,P<0.05,差异有显著性。两组均无严重不良反应。结论MTX每周口服7.5～15mg,同时补充小剂量叶酸治疗中重度银屑病有效。     

PLDD治疗拒绝开放手术的脊髓型颈椎病患者的疗效观察与思考

目的：探讨经皮激光椎间盘减压术（PLDD）治疗拒绝开放手术的脊髓型颈椎病患者的疗效。方法：2002年～2006年应用PLDD治疗16例拒绝开放手术的脊髓型颈椎病患者，手术前后采用日本骨科学会（JOA）17分法进行评价．计算改善率及优良率，随访观察治疗效果。结果：手术时间平均为15min，术中无明显出血，无血管、神经损伤及感染等并发症发生。术后1、3、6、12个月时JOA评分改善率分别为28．54％、34．82％、41．09％和47．57％．优良率分别为31．3％、37．5％、37．5％和56．0％。随访24个月者11例，改善率为46．56％，优良率为54．4％。结论：PLDD治疗脊髓型颈椎病患者有一定疗效，对拒绝开放手术的脊髓型颈椎病患者是一种可供选择的微创治疗手段。     

真皮-脂肪颗粒混合液注射移植修复面部凹陷性组织缺损

目的探索一种新的面部凹陷性组织缺损的修复方法。方法将真皮颗粒和脂肪颗粒混合制成真皮-脂肪颗粒混合液,用2mm脂肪抽吸针注射移植修复面部凹陷性组织缺损。结果本组18例,17例1次填充成功,仅1例因缺损面积过大而补充填充1次,全部病例伤口均Ⅰ期愈合,无感染,外形明显改善。结论真皮-脂肪颗粒混合移植修复面部凹陷性组织缺损,手术简单易行,术后吸收少,效果较好,值得推广。     

姜黄素逆转P糖蛋白介导的膀胱肿瘤多药耐药的实验研究

目的 研究姜黄素对P糖蛋白(P-gp)介导的膀胱肿瘤多药耐药的逆转作用.方法 采用MTT法测定药物的体外杀伤作用,应用流式细胞术测定细胞内罗丹明浓度.结果 姜黄素不增加阿霉素对BIU-87的细胞毒性作用(P＞0.05);而对于BIU-87/ADR,姜黄素明显增加阿霉素细胞毒性(P＜0.05),逆转指数为4.0.姜黄素明显抑制P-gp的药物外排作用可能是关键因素.结论 姜黄素通过抑制P-gp的药物外排作用有效逆转多药耐药.