细菌内毒素对缺氧缺血性脑损伤新生大鼠远期智能的影响

目的：探讨细菌内毒素脂多糖（LPS）对缺氧缺血性脑损伤（HIBD）新生大鼠远期智能的影响，方法，建立新生大鼠LPS＋HIBD模型，于新生大鼠缺氧前4h给予腹腔注射LPS0．3mg/kg,HIBD组和对照组仅给予腹腔注射生理盐水，采用迷宫实验观察远期学习记忆能力的改变。结果：LPS＋HIBD组学习记忆能力明显低于HIBD组，表现在达标所需反映次数明显高于HIBD组（P＜0．05），而正确率支明显低于HIBD组（P＜0．05），结论：LPS对缺氧缺血引起的脑损伤有增敏作用，可进一步降低HIBD后的学习和记忆能力。     

腹腔镜手术治疗特殊部位异位妊娠11例报告

目的 探讨特殊部位异位妊娠的临床特点与腹腔镜手术治疗的可行性与安全性。方法 回顾分析1998年1月至2003年1月间经腹腔镜手术治疗的特殊部位异位妊娠的临床资料,包括输卵管间质部妊娠4例,卵巢妊娠4例,腹腔妊娠3例。结果 11例特殊部位异位妊娠的临床特点:平均停经时间以卵巢妊娠较短,而间质部妊娠时间较长;血β-HCG值以卵巢妊娠和腹腔妊娠较低,而间质部妊娠较高;腹腔镜手术治疗特殊部位异位妊娠效果:平均手术时间为(45.0±13.8)min,平均术中失血为(81.0±80.6)mL,平均住院时间为(3.0±0.6)d,腹腔镜手术成功率为91％。结论 腹腔镜手术治疗特殊部位异位妊娠是可行且安全的,但是应根据其特点选择术式并预防并发症。     

妊娠高血压综合征患者血清sICAM-1含量测定及其在妊高征发病中的作用

目的　探讨可溶性细胞间粘附分子 1(soluble intercellular adhesion molecule- 1,s ICAM- 1)在妊娠高血压综合征 (简称妊高征 )发病中的作用。　方法　应用酶联免疫吸附法 (EL ISA)测定 6 5例妊高征患者 (妊高征组 ,包括轻度 15例 ,中度 2 4例 ,重度 2 6例 )及 2 5例同期正常妊娠孕妇(对照组 )外周血清中 s ICAM- 1的含量 ;应用化学发光酶联免疫分析法测定两组孕妇血清中白细胞介素 1(interleukin- 1,L I- 1β)及肿瘤坏死因子 (tum or necrosing factor alpha,TNF- α)含量 ;并记录新生儿体重及妊娠结局。　结果　轻、中、重度妊高征组母血清中 s ICAM- 1的含量 [(36 8.5 6± 6 2 .81) μg/L、(6 0 6 .6 3± 10 5 .0 4 ) μg/ L、(85 9.36± 2 0 0 .92 ) μg/ L]均显著高于对照组 [(2 36 .6 9± 96 .33) μg/ L](P<0 .0 5 ,P<0 .0 1,P<0 .0 1) ,中、重度妊高征组母血清中 IL- 1β及 TNF- α的含量均显著高于对照组(P<0 .0 5 ,P<0 .0 1) ;中、重度妊高征组 s ICAM- 1的水平与相应 IL- 1β及 TNF- α的水平呈显著的正相关 (r=0 .6 97,P<0 .0 1;r=0 .74 6 ,P<0 .0 1)。重度妊高征组伴胎儿生长受限 (fetal growth restric-tion,FGR)者血中 s ICAM- 1含量显著高于同组其他孕妇之含量 (P<0 .0 5 )。妊高征组     

Phase II study of denileukin diftitox for relapsed/refractory B-Cell non-Hodgkin's lymphoma.

PURPOSE: Denileukin diftitox is a fusion protein combining diphtheria toxin and interleukin-2 (IL-2) that targets tumor cells expressing the IL-2 receptor. Its efficacy has been shown in CD25+ cutaneous T-cell lymphoma, but not in B-cell non-Hodgkin's lymphoma (NHL). A phase II study was performed to evaluate the efficacy and tolerability of denileukin diftitox for relapsed or refractory B-cell NHL. PATIENTS AND METHODS: Patients with relapsed or refractory B-cell NHL were eligible. Tumor CD25 expression was determined by immunohistochemistry or flow cytometry. Denileukin diftitox was administered intravenously at a dose of 18 microg/kg once daily for 5 days every 3 weeks, up to eight cycles. RESULTS: Of the 45 patients assessable for response, 32 (71%) were refractory to the last chemotherapy treatment, and all were previously treated with rituximab. Three complete responses (6.7%) and eight partial responses (17.8%) were observed, for an overall response rate of 24.5%. Nine patients (20%) had stable disease. Objective response rates were similar in CD25+ (22%) and CD25- histologies (29%), as were stable disease rates (22% and 18%, respectively). For responding patients, the median time to treatment failure was 7 months, with a median follow-up in survivors of 18 months (range, 9 to 28 months), and the projected progression-free survival at 20 months was 24% (95% CI, 0% to 60%). Most toxicities were low-grade and transient. CONCLUSION: Denileukin diftitox seems to be effective in relapsed or refractory, CD25+ and CD25- B-cell NHL and is well-tolerated at the dosage evaluated. Evaluation of denileukin diftitox in combination with other agents may be warranted.     

异基因造血干细胞移植并发致死性间质性肺炎

目的探讨小儿异基因造血于细胞移植并发间质性肺炎（IP）的发病病因、临床特点、危险因素及防治措施。方法根据尸解病理检查及聚合酶键反应技术对病毒病原学检测结果，结合临床移植资料综合分析。结果14例移植患儿中并发IP3例（3／14），分别死于十19天、＋76天、＋150天;3例IP中2例移植前后外周血及尸解肺组织直到CMV包涵体;4例3～4应急性GVHD患儿中3例并发IP，10例0～2度急性GVHD无1例并发IP。结论IP是移植早期死亡的重要原因之一，巨细胞病毒感染是IP的主要病原，GVHD严重程度与移植后并发IP密切相关.     

肾上腺素诱导兔血小板聚集的实践与理论探讨

目的创建以Ａｄｒ诱导兔血小板聚集的方法，并对受体分子特性作初步探讨。方法以高Ｋ＋缓冲液等取代兔ＰＲＰ中血浆，以Ａｄｒ诱导聚集，以Ａｐｙｒ证实结果。结果兔血小板悬浮于高Ｋ＋缓冲液时Ａｄｒ能单独诱导真正的聚集。结论由此推测血小板膜上α２肾上腺素受体分子可能为由两种亚单位组成：促聚亚单位和辅助亚单位。人辅助亚单位当Ａｄｒ浓度高达聚集阈值以上时可被激活，与促聚亚单位结合为活性的二聚体，与Ａｄｒ进一步结合发生聚集作用。兔辅助亚单位则还需要高Ｋ＋方能被激活     

筛窦开放后鼻甲外移开窗的临床及CT观察

OBJECTIVE: To assess the effect of middle turbinate (MT) and ethmoidal internal wall(EIW) moved externally after microsurgery. METHODS: Twenty-four cases (45 sides) were followed-up endoscopically for (16.3 +/- 9.3) months. Thirteen cases (24 sides) were observed by CT scans. Three cadaver heads were measured for anatomical analysis. RESULTS: Forty-one (91%) of 45 sides obtained better olfactory function after operation. Twenty-two (91%) of 24 sides were found to have better CT changes in sinus ventilation as compared with preoperative CT scans. The gap between the MT and EIW to the orbital wall was (12.0 +/- 1.0) mm, while that between the ethmoidal bulla and processus uncinatus was only (2.3 +/- 0.6) mm as revealed in the autopsy. CONCLUSION: MT and EIW moderately moved suitably to externally had no bad effect on sinus ventilation, and it improved olfaction.     

新型4通道单电源低功耗程控接口脑电放大器的研制

本脑电放大器针对现有同类电路缺点进行改进，采用了最新一代高性能模拟与混合信号集成电路芯片，优化了电路结构并通过精细的电路工艺措施实现了噪声电压1．9μVp-p、共模抑制比100dB、输入阻抗80MΩ、基线漂移小、单电源5V供电和工作电流小于10mA等电路指标，并实现了增益控制和滤波控制的数字化接口。1年的应用表明该放大器安全省电、体积小、结构简单、性能稳定，非常适合作为便携式智能型脑电图仪器的前端。