顶空—气相色谱法测定盐酸洛美利嗪中乙腈残留量

目的：建立盐酸洛美利嗪原料药中乙腈残留量的测定方法。方法：采用顶空进样法，80％DMF水溶液为溶剂，平衡温度70℃，平衡时间40min，气相色谱条件：采用不锈钢填充色谱柱：柱长2m，内径3mm，粒径为0.25-0.32mm的二乙烯苯与乙基乙烯苯共聚物有机担体为填料，柱温130℃，FID检测器，检测器温度250℃，氮气为载气，流速50mL.min^-1。结果：乙腈在23．46－234．6μg.mL^-1的浓度范围内呈良好的线性关系（r=0.9978)，回收率为96．7％（RSD＝3．8％），检出限小于40μg.g^-1。结论：本方法简单，快捷且灵敏度高，可以用于盐酸洛洛美利嗪中乙腈残留量的控制。     

Construction of Antisense Transforming Growth Factorβ_1 Gene and Its Effect on the Proliferation by Expression in Osteosarcoma Cells

Summary:To construct the antisense transforming growth factorβ1(TGFβ1)gene and investigatethe effect of TGFβ1 autocrine loop blockage on the proliferation of osteosarcoma cells.TGFβ1 cDNAwas cloned by RT-PCR from human osteosarcoma cells(MG-63)and inserted into pcDNA_3 to con-struct an antisense expression vector,which was dubbed pcDNA_3-TGFβ1(-).MTT was used to de-tect the proliferation of osteosarcoma cells transfected by antisense TGFβ1 gene.Our results showedthat the proliferation of the transfected osteosarcoma cells was suppressed markedly.It is concludedthat TGFβ1 autocrine loop blockage in osteosarcoma cells could inhibit cell proliferation,which mightbe helpful for gene therapy of osteosarcoma.     

大学生心理障碍干预实验研究

目的　探索有效的心理障碍治疗方法 ,降低大学生心理障碍发病率。方法　以经SCL - 90测试分析筛检出≥ 2项因子分在 2 3以上的心理障碍者 2 0 5人为研究对象 ,采取心理治疗、中药治疗、中药与心理疗法结合治疗 3种干预模式对实验组心理障碍者进行为期半年治疗 ,对实验组与空白对照组测试情况比较、各实验组组间比较 ,干预前、后测试结果比较 ,对干预效果进行评价。结果　 3个干预实验组与对照组相比 ,SCL - 90测试结果均低于对照组 ;干预前后SCL - 90测试总分、总均分、各因子分差异有显著性意义 (P <0 0 0 1)。结论　 3种干预方式对心理障碍均有不同程度的疗效 ,以中药与心理疗法结合治疗效果最佳。     

GraVes眼病炎性活动期与静止期血清sICAM-1水平的研究

目的:研究可溶性细胞间粘附因子-1(sICAM-1)在Graves眼病(GO)炎性活动期与静止期的水平差异及其与各项甲状腺功能指标的关系。方法:将GO炎性活动期与静止期患者,Graves病(GD)无眼病患者及正常对照,分为A、B、C、D四组,抽取空腹静脉全血,测血清sICAM-1,各组间进行比较。并分析各组sICAM-1与FT3、FT4、TG、TM的相关关系。结果:①A、B、C组患者血清sICAM-1均明显高于正常对照组(P<0.05)。A组患者sICAM-1水平最高,与B组及C组患者相比有统计学差异(P<0.01);②前三组各组内sICAM-1与FT3、FT4成直线相关关系,与TG、TM成直线相关关系;③GO炎性活动期患者sICAM-1与GO评分成正相关。结论:血清sICAM-1水平可作为反映GO活动性评判的免疫指标,长期监测sICAM-1可预示GD进展为临床活动性眼病的可能性。     

停跳或不停跳心脏手术对血清 S-100B蛋白表达的影响

【目的】研究心脏手术围术期血清S-100B蛋白表达及其与停跳或不停跳心肺转流方式和时间的关系。【方法】体外循环心脏手术患者23例,测转流前、转流10min、转流末、转流后24h的血清S-100B蛋白表达水平。【结果】①血清S-100B蛋白质量浓度在体外循环前后动态变化:转流前(M)为0.27μg/L,转流10min后升至0.57μg/L(P<0.01),转流末达峰值1.80μg/L(P<0.01),转流后24h降为0.22μg/L(P>0.05)。转流末的血清S-100B蛋白质量浓度与转流时间呈正相关(r=0.488,P<0.05)。②停跳组(n=6)转流前、转流10min、转流末、转流后24h平均血清S-100B蛋白质量浓度分别为(0.17±0.09)μg/L、(0.48±0.13)μg/L、(1.65±0.52)μg/L和(0.19±0.04)μg/L,不停跳组(n=6)分别为(0.26±0.14)μg/L、(0.71±0.41)μg/L、(1.59±0.84)μg/L和(0.23±0.11)μg/L,两组差别无统计学意义(P>0.05)。【结论】体外循环可导致血清S-100B蛋白表达增高,其表达水平与心肺转流时间呈正相关,但与停跳或不停跳转流方式无关。     

序贯培养对小白鼠胚胎体外发育的影响

目的:探索序贯培养技术对小白鼠胚胎体外发育的影响。方法:将 2 -细胞期的小鼠胚胎随机分为序贯培养组与传统培养组进行培养 ,观察分析两组的 8-细胞期胚胎形成率、桑椹期胚胎形成率及囊胚形成率。结果:序贯培养组 8-细胞期胚胎形成率、桑椹期胚胎形成率及囊胚形成率分别为 70 .5 %、6 8.2 %、6 5 .9% ,传统培养组分别为 4 5 .7%、4 5 .7%、34.3%。两组比较 ,序贯培养组高于传统培养组 ,差异有统计学意义 (P <0 .0 5 )。结论 :采用适当的培养液进行序贯培养 ,更适合小白鼠胚胎的体外发育     

人外周血单核细胞和脐血CD34+细胞来源的树突细胞比较

目的比较从人外周血单核细胞及脐血CD34+细胞诱导树突细胞(DC)的方法及其特性.方法用淋巴细胞分离液分离外周血单个核细胞,贴壁法获得单核细胞;经GM-CSF及IL-4诱导获得DC.磁性活化细胞分选系统(MACS)分选脐血CD34+细胞,以GM-CSF、IL-4、TNF-α、SCF、FL、TPO等细胞因子诱导获得DC.用电镜、普通显微镜观察DC形态;流式细胞仪分析DC表型;同种混合淋巴细胞反应(allo-MLR)观察DC刺激T淋巴细胞增殖的能力.结果外周血单核细胞在因子GM-CSF、IL-4、TNF-α,脐血CD34+细胞在GM-CSF、IL-4、TNF-α、SCF、FL、TPO等因子作用下,可生成DC,并表达相应的DC分化抗原CD14、CD80、CD83、CD86、HLA-DR.脐血CD34+细胞具有较强的扩增能力,经2周诱导,体系细胞数可增加173.8士26.7倍,两种来源的DC均能刺激同种异体淋巴细胞的增殖反应.结论外周血单核细胞与脐血CD34+细胞,在体外均可诱导成DC,并具有相应的DC分化抗原和功能.     

猪肾近端小管的超微结构

目的 研究猪肾近端小管的超微结构。方法 树脂包埋一超薄切片、透射电子显微镜技术。结果 猪肾近端小管可分S1、S2、S3和S4段构成，其中S1、S2段构成了近端小管曲部，S3、S4段构成了近端小管直部。本文对各段细胞超微结构特点进行详细的描述。结论 猪肾近端小管的超微结构与人肾近端小管最接近。     

Polymorphism p53 codon-72 and invasive cervical cancer: a meta-analysis.

OBJECTIVES: Although some studies have reported that the arginine isoform on codon 72 of p53 increases the susceptibility to invasive cervical cancer, such data remain controversial. The objective of this study was to quantitatively summarize the evidence for such a relationship. METHODS: Our data sources consisted of a MEDLINE search of the literature published before December 2002, bibliography review, and expert consultation. Thirty-seven studies met the inclusion criteria. Information on sample size, study design, Hardy-Weinberg equilibrium, and method of genotype determination was abstracted by two reviewers using a standardized protocol. The overall odds ratio (OR) of the p53 gene on invasive cervical cancer was estimated using the Mantel-Haenzel method. RESULTS: The overall OR (95% confidence interval) for cervical cancer among those with the homozygous mutant (Arg/Arg) was 1.2 (1.1-1.3, P=0.001) compared with those with the heterozygous mutant (Arg/Pro). By a cellular type of cervical cancer, the overall OR among those with Arg/Arg was statistically significant in adenocarcinomas (1.7, 1.1-2.6, P=0.024), but not in squamous cell carcinomas (1.1, 0.9-1.2, P=0.960), compared with Pro/Pro. Compared with Arg/Pro, the OR among those with Arg/Arg was statistically significant in HPV types 16 (1,5, 1.2-2.0, P=0.002). CONCLUSIONS: Overall, the p53 gene was associated with increased risk for invasive cervical cancer. However, the risk varied by country, cellular, and HPV type.     

Acupuncture Treatment for 34 Cases of Epiphora with Dysfunction of Lacrimal Duct

We have treated 34 cases of epiphora due to dysfunction of the lacrimal duct with a warm needle puncturing at the Jingming (UB 1) point. The effect was significantly better than that of the control group treated with lacrimal duct irrigation and norflaxacin eye drops (a total effective rate of 91.07% vs. 54.29%).