胆酸钠对人卵巢癌细胞系作用的研究

目的 探讨胆酸钠单独应用及联合全反式维甲酸对2株卵巢癌细胞系(COC2、CAOV3)的体外抑制作用。方法 2003年5～8月对经不同浓度的胆酸钠及胆酸钠联合全反式维甲酸作用后的两株细胞采用MTT比色法测定细胞生长抑制率，流式细胞仪测定细胞周期变化，并行培养细胞的光镜、电镜观察。结果胆酸钠对两株细胞的抗增殖活性在50～150mg／L范围内呈现剂量依赖效应，并且在两药合用时此作用更明显；单用胆酸钠及两药联合应用均能随用药浓度而明显增加G0／G1期细胞比例，降低S、G2／M期比例，并以两药合用更为明显；光镜、电镜结果显示：胆酸钠100mg／L组与全反式维甲酸10μmol／L组细胞形态变化相似，但两者合用时细胞凋亡明显。结论 在两株卵巢癌细胞中胆酸钠不但具有单独而且有协同全反式维甲酸抑制肿瘤的作用，胆酸钠能明显降低全反式维甲酸的用量从而减少其副反应，并且不降低其抗肿瘤作用。     

The value of pulse wave velocity in the diagnosis of coronary heart disease

Objective: Using receiver operating characteristics (ROC) curve to evaluate the value of pulse wave velocity (PWV) in the diagnosis of coronary heart disease (CHD). Methods: By using coronary angiography as golden diagnostic standard of CHD, 218 patients were divided into both CHD group (n=121) and non-CHD group (n = 97). All these patients received PWV test. The efficacy of PWV of each artery segments in the diagnosis of CHD was evaluated by ROC curve. The sensitivity and specificity were calculated with the golden diagnostic standard of CHD. Results:The PWV of right carotid to femoral artery (Rc-f), left carotid to femoral artery (Lc-f), right radial to carotid artery (Rc-r), left radial to carotid artery (Lc-r) in CHD group were significantly higher than that of non-CHD group (9. 31±1. 75 vs 7.60±1.59, P<0. 01; 9. 02±1.71 vs 7. 52±1.50, P<0. 01; 8. 69±1. 37 vs 8. 00±1. 27, P<0. 01; 8.52±1. 03 vs 8. 03±1. 2, P<0. 01 respectively). However, the PWV of both right and left femoral to ankle artery (Rf-a and Lf-a) had no significant differences between the two groups. We then compared the area under curve (AUC) of each ROC(AUCROC) of PWV of Rc-f, Lc-f Rc-r and Lc-r to evaluate their diagnostic efficacy for CHD. We found that AUCROC of Rc-f PWV was the biggest (AUCROC = 0. 818), at the peak point of its ROC curve, the PWV was 8. 32 m/s. PWV>8. 32 m/s of Rc-f could predict the presence of CHD with a sensitivity of 79% and specificity of 77%. Conclusion: The PWV of Rc-f, Lc-f, Rc-r, Lc-r are significantly higher in CHD group than that in non-CHD group, and PWV of Rc-f is the most accurate in the detection of CHD. The PWV>8. 32 m/s of RC-F is a valuable predictor of CHD.     

一氧化碳对大鼠心室组织心钠素分泌的影响

目的探讨一氧化碳(CO)在大鼠心室组织孵育液中对心钠素(ANP)分泌的影响。方法将正常Wistar大鼠的左、右心室分别分为对照组(未加药)和血红素组(孵育时加入血红素,终浓度10-4mol/L),每组各12例,用Krebs液作为孵育液,放入37℃恒温水浴箱中振荡孵育4 h,用放射免疫法测定孵育液中ANP含量。结果与对照组比较,血红素组大鼠左心室[(9.72±3.59)ng/(g.wet tissue)vs(52.05±31.65)ng/(g.wet tissue),P<0.01]和右心室[(5.55±3.98)ng/(g.wet tissue)vs(62.73±41.66)ng/(g.wet tissue),P<0.01]组织孵育液中ANP含量明显降低。对照组大鼠左右心室组织孵育液ANP含量没有明显差异;血红素组中,大鼠右心室组织孵育液中ANP含量明显低于左心室组织孵育液中ANP含量[(5.55±3.98)ng/(g.wet tissue)vs(9.72±3.95)ng/(g.wet tissue),P<0.05]。结论CO可抑制大鼠左右心室组织孵育液ANP含量,且CO可能对右心室组织孵育液ANP含量的抑制作用大于对左心室组织孵育液ANP含量的抑制作用。     

上田法和电脑中频协同治疗脑性瘫痪

目的探讨上田法和电脑中频协同治疗小儿脑性瘫痪(脑瘫)的疗效。方法观察和评定上田法和电脑中频协同治疗小儿脑瘫60例的疗效;收集和评定此前本科单用上田法治疗小儿脑瘫56例的疗效,比较两者连续治疗4个疗程(120 d)后疗效。结果上田法和电脑中频联用总有效率96.7%,单用上田法总有效率82.1%,两者比较有显著性差异(P<0.05)。结论上田法和电脑中频协同治疗小儿脑瘫有显著疗效。     

新生儿重度烧伤伴休克1例

患儿，男，20d，因热水袋破裂烫伤背部、腹下区、臀部、左下肢后4h入院。查体：体温36．1℃，脉搏184次／min，呼吸40次／min，体质量3．1kg。口唇发绀，四肢凉，无尿，心音弱，心率快，双肺呼吸音清，未闻及干湿哕音，背部、下腹部、臀部、左下肢见烧伤创面，创面可见大小不一水疱，大部分表皮脱失，创面基底红润，部分创面基底红白相间，创面渗出多，痛觉敏感。符合新生儿烧伤诊断及严重程度分度标准。     

肾上腺意外瘤中亚临床库欣患者的转归

目的 探讨肾上腺意外瘤中亚临床库欣综合征患者的临床转归.方法 随访我院诊治的37例亚临床库欣患者的临床和实验室检查资料.结果 本组随访亚临床库欣患者中8.11%(3/37)发展为临床显性库欣.患者有代谢综合征的临床症状,在随访1 ～ 3年后出现显性库欣综合征的典型临床症状,血尿皮质醇升高,2 mg和8 mg地塞米松抑制试验不能抑制,患者行肾上腺腺瘤摘除术后临床症状改善,糖皮质激素水平降低.结论 亚临床库欣患者有部分可发展成为临床显性库欣,对肾上腺意外瘤患者应仔细行生化指标和激素水平检查,明确其功能,一经确诊为亚临床库欣,应积极手术.     

Influence of the femoral head size on early postoperative gait restoration after total hip arthroplasty

Background We investigated the effects of using large-diameter femoral heads in total hip prostheses on eady postoperative gait restoration in patients undergoing total hip arthroplasty (THA). Methods We collected data for 19 primary THAs using 28-mm metal-on-polyethylene heads (conventional group) and for 12 THAs (BHR group) using metal-on-metal femoral heads with an average size of 45 mm (range, 40-49 mm). All patients had unilateral femoral head avascular necrosis. All patients underwent Harris Hip Scores evaluation and gait analysis with the IDEEA device at the same 3 time points which were before surgery and then at 1 month and again at 3 months after surgery, and the parameters measured were walking speed, stride length (SL), single limb support (SLS), cycle duration (CD), and swing power (SP). Harris Hip Scores and gait analysis parameters for both groups were compared.Results Intraclass comparison indicated that Harris Hip Scores, speed scores, and gait parameter measures in both groups improved significantly with the passage of time; Interclass comparison showed no significance between Harris1m postop - Harrispreop and Harris3m postop- Harrispreop in both groups. The speed in the BHR group at 1 month and at 3 months after surgery was significantly higher than that of conventional group. At 1 month after surgery, each mean for SLnormal-SLaffected, (SLSnormal - SLSaffected)/CD, and SPnormal - SPaffocted in the BHR group was significantly lower than that for the conventional group. At 3 months after surgery, the differences between means for both groups for SLnormal - SLaffected.(SLSnormal- SLSaffected)/CD, and SPnormal - SPaffected were not significant, but the mean of SPnormal - SPaffected in the BHR group was significantly lower than that in the conventional group.Conclusions Our data suggest that large-diameter femoral heads in THA provide better early gait restoration than conventional-size femoral heads.     

顺丁烯二酸酐改性环氧二甲基丙烯酸酯的合成与应用

为了合成顺丁烯二酸酐改性的环氧二甲基丙烯酸酯树脂及其物理机械性能。按量取E51环氧树脂、甲基丙烯酸、顺丁烯二酸酐，与催化剂N，N-二甲基苄胺一起进行反应。检测了由合成EAM单体或EMA单体配制复合树脂的压缩强度、径向拉伸强度、表面硬度、固化深度、吸水值和水溶解值。与EMA单体比较，含EAM单体的复合树脂明显增强了压缩强度、径向拉伸强度、表面硬度、固化深度值，降低了吸水值和水溶解值。     

做好医用耗材准入管理工作

医用耗材种类繁多,从十几万的支架到几分钱的PE膜手套,设备处管理工作者的职责在于,把好医用耗材准入关,合理安排采购计划,做好服务保障工作,满足临床、科研和教学的需要。     

BJ-6B医用直线加速器磁控管异常打火的应急处理

本文分析了医用直线加速器M5193型磁控管产生异常打火的原因、处理办法及由此引发特殊故障的应急处理。