PCR技术在鼠肺支原体检测中应用的初步研究

目的　研究不同培养条件对小鼠卵母细胞体外成熟及体外受精率的影响。方法　小鼠卵母细胞分别在含有FSH、BSA和胰岛素的培养液中体外成熟,在Whitten 氏液中体外受精,比较体外成熟率、体外受精率。结果　1- 裸卵(DO) 的体外成熟率、体外受精率(81-4% ,31-0 % ) 均高于卵丘卵母细胞复合体(COC)(48-6 % ,27-1% ) 。2- 在培养液中添加FSH、胰岛素和BSA,卵母细胞的体外成熟率为77-9 % ,82-3% 、60-7% ;体外受精率为77-2 % 、72-6 % 、26-7% ;2 - 细胞率为49-2 % 、34-2 % 、10-0% 。胰岛素组的卵母细胞IVM 率最高,但IVF率、2 - 细胞率低于FSH 组。3- 添加BSA的两组的体外受精率只有26-7 % 、25-8 % ,显著低于其他组,其体外成熟率也较添加FSH 和胰岛素的组成。4- 排出第一极体(PbI) 的卵母细胞的体外受精率和2 - 细胞率(85-9 % ,22-4% ) 均高于GV期卵母细胞(71-1 % ,12-9 % ) 。结论　1- 卵丘卵母细胞(COC) 较裸卵(DO) 的体外成熟率、体外受精率都低,差异显著(P成熟< 0-01;P受精< 0-05) 。2-FSH 和胰岛素均能提高小鼠卵母细胞的体外成熟率、体外受精率。3-BSA可以降低小鼠卵母细胞体外受精率,差异极显著。4-GV 期卵母细胞的体外受精率显著低于体外培养的排出第一极体的卵母细胞(P2 - cell < 0-05,P受精<0-05)     

HX-Ⅰ液作为腹部内多器官灌注液可行性研究

采用大鼠肝脏非循环离体灌注模型,观察HX-Ⅰ液对大鼠肝组织含水量、肝窦内皮细胞死亡率,Krebs－Henseleit液天门冬氨酸转移酶活性、分泌胆汁的肝脏数量;观察HX-Ⅰ液对糖尿病大鼠胰腺移植术后血糖（Pod＋2,7,14）、糖耐量、胰岛素变化;观察HX-Ⅰ液对狗肾移植术后血肌酐、存活率及肝、胰、肾脏的形态学。结果表明,HX-Ⅰ液保存大鼠肝脏达24h,胰腺48h,狗肾脏达72h。说明HX-Ⅰ液作为腹部内多器官灌注液是可行的。     

Effects of depressed mood versus clinical depression on neuropsychological test performance among African American men impacted by HIV/AIDS

The utility of self-report measures in identifying those at risk for depressive disorder and the adverse impact of depression versus depressed mood and HIV serostatus on neuropsychological (NP) test performance were examined in a large sample (N = 243) of gay and bisexual African American men. Results indicate high rates of depression relative to recent population estimates, regardless of methodology, but that the use of standard cut-scores for self-report inventories may significantly overestimate psychiatric morbidity. Limited independent effects of serostatus or depression on NP test performance were observed. More importantly, a complex set of adverse effects of depression and its interaction with serostatus which varied according to the methodology used to assess depression were observed. These findings are discussed in light of ongoing controversy regarding the relative influence of depression on neuropsychological functioning among people living with HIV/AIDS.     

15kg负重沙漠干热应激行军速度和时间对人体GSH和SOD的影响

目的　探讨沙漠干热负重应激行军人体ＧＳＨ 和ＳＯＤ 作用机制。方法　对７４ 名１５ ｋｇ 负重在沙漠干热环境以不同速度和时间行军战士和对照人群血浆的变化进行了研究。结果　１５ ｋｇ 负重,３－５ｋｍ／ｈ 和５ ｋｍ／ｈ 行军者ＧＳＨ 在应激的最初１ 小时内迅速上升,约１ 小时达到高峰,之后迅速下降;随着行军速度的增加,机体抗氧化作用所消耗的ＳＯＤ 量增加,血浆ＳＯＤ 浓度亦随之下降。结论　从行军时间来看,在应激的最初１ 小时内,因应激诱导的ＧＳＨ 的合成和ＳＯＤ 的量增加,故沙漠干热环境负荷应激行军以１５ ｋｇ、３－５ ｋｍ／ｈ 为宜。     

Immunocytochemical Study of Cells in the Vitreous of Proliferative Virteoretretinopathy

Purpose: To identify the cellular components of vitreous samples obtained during vit-rectomy for proliferative vitreoretinopathy(PVR).Methods: With the use of three intermediate filament (IF) proteins, vimentin, glialfibrillary acidic protein (GFAP), and cytokeratin (CK), cytocentrifuge slides of 14fresh vitreous aspirates were detected with immunohistochemical technique.Results: All the specimens contained epithelial-like proliferative cells with or withoutpigment and some membrane-like pieces. Immunocytochemical staining showed that76.0-90.0% cells stained for CK, 17.4-29.6% cells expressed GFAP, and 80.1-91.0% cells were positive for vimentin.Conclusions : Majority of cells in the vitreous samples originated from retinal pigmentepithelial cells (RPE) and glial cells in PVR. Expression of IF proteins may be determinedby tissue of origin and local microenvironment. Eye Science 1999 ; 15; 13 - 16.     

后巩膜加固术对视网膜振荡电位的影响

目的　为了更进一步地了解后巩膜加固术治疗高度进行性近视的疗效和机理。方法　采用日本产Ｎｅｕｒｏｐａｃｋ Ｆｏｕｒ ４１０４ Ｋ 电生理仪,对２６ 例５２ 眼高度进行性近视行后巩膜加固术前、术后视网膜振荡电位进行定量分析。结果　术前、术后振荡电位总振幅经统计学处理有非常显著性差异,波的潜伏期无显著性差异。结论　本文认为后巩膜加固术可改善视网膜血液循环,并对机理进行了探讨     

手术治疗挫伤性睫状体脱离的体会

目的 探讨治疗挫伤性睫状体脱离的最佳手术方法。方法 对４５例挫伤性睫状体脱离的病例进行睫状体固定缝合术。结果 ４５例手术全部成功,术后眼压较术前平均升高９．９８ｍｍＨｇ。视力均有明显提高,治愈率１００％。结论 睫状体固定缝合术是治疗挫伤性睫状体脱离最直接的理想的手术方法。     

高度近视白内障小切口超声乳化摘除术

目的：探讨经透明角膜隧道对高度近视白内障患者行超声乳化摘除术的可行性及手术技巧。方法：对２１６例高度近视合并白内障患者,经角膜缘隧道切口行超声乳化吸出,并植入软性或硬性人工晶体。对超声乳化能量、时间、负压及术后视力、散光及并发症进行观察。结果：采用较低能量、中度真空压力及中低档流速行超声乳化吸出,术后视力≥０．８者１４３例,≥０．５者４９例。术前近视力≥０．８者,术后远视力常较佳。术前及术后散光３．０ｍｍ切口组无统计学差异,５．５ｍｍ切口组有统计学差异。未见明显严重并发症。结论：透明角膜超声乳化联合软性或硬性人工晶体植入,是高度近视白内障较理想的手术方式。     

脊柱内固定对邻近运动节段的影响

为研究脊柱内固定对邻近关节突关节的影响,应用成年山羊20只,随机分长节段、短节段固定组和对照组,进行3个月、6个月的光镜、扫描电镜及透射电镜观察。结果发现近头侧2个邻近脊椎的关节突关节都出现了退变。长节段固定后邻近关节突关节早期就出现了较严重的退变,而短节段固定后其退变程度较轻。研究认为内固定后邻近运动节段的高应力环境是其关节突关节退变的主要因素,并有可能导致邻近运动节段的不稳定。     

Lipoprotein levels in patients with pregnancy induced hypertension

The purpose of this prospective study was to investigate the levels of Lp(a), Apo(a), VLDL, LDL and HDL in 23 patients with pregnancy induced hypertension (PIH) and in 20 control. The Mann-Whitney U tests was used for comparisons between the two groups. Serum Lp(a) and Apo(a) levels were sigificantly raise in the PIH group (p < 0.05 andp < 0.05 respectively) and no significant correlations could be demonstrated for other lipoproteins.