Quantitative real-time PCR detection of adenovirus in clinical blood specimens: A comparison of plasma, whole blood and peripheral blood mononuclear cells

BACKGROUND: Detection and quantification of adenovirus (ADV) in peripheral blood specimens has become an increasingly important tool in the management of immunosuppressed patients. Investigators have described the use of whole blood (WB), peripheral blood mononuclear cells (PBMC), serum and plasma but no studies have compared the utility of these different sample types for use in a clinical diagnostic assay. OBJECTIVES: To determine the optimal blood compartment for quantitative real-time measurement of adenovirus in peripheral blood specimens. STUDY DESIGN: WB, PBMC, and plasma representing 338 samples from 148 patients were tested for ADV by quantitative real-time PCR (qrt-PCR) and the results compared for concordance of both qualitative sensitivity and viral load among positive specimens. RESULTS: There was no significant difference in qualitative sensitivity among the three tested specimen types. Quantitative values of WB and plasma were similar and tended to be greater than those found in PBMC samples. Comparison of consecutive positive samples within individual patients showed that viral loads tracked similarly over time, irrespective of the sample type tested. CONCLUSION: While WB and plasma do not offer a significant increase in sensitivity over PBMC, they may offer benefits in terms of reduced processing costs and laboratory turn around time.     

Long-term results of radio-surgical treatment of operable carcinoma of the cervix uteri

Four hundred and fifteen women, treated in our institution from 1961 to 1987 for operable carcinoma of the cervix stage I or II, had a radical hysterectomy with pelvic node dissection. Radiotherapy was associated with this surgery in most cases: 90% of the patients received endocavitary radiation, and 30% external radiotherapy, either pre- or post-operatively, in the case of bad prognostic factors. Median follow up was 7 years; overall survival was 77% at 10 years; the rate of local failure is low (36 cases/415 = 8.7%). Multifactorial analysis, using the Cox model, assessed the following independent prognostic factors, significant for the risk of local recurrence (size of the tumor, N +/- , FIGO stage) and for the risk of metastases and death (parametrium invasion, stage, tumor size). Post-operative mortality was 1.2%. Early surgical iatrogeny was easily treated with no long-term sequela, whereas severe complications, due to the association with pelvic irradiation, occurred in 24 out of 124 patients, leading to 7 "illegitimate" deaths.     

咪唑安定、异丙酚对体外循环期酸碱平衡的影响

目的 观察异丙酚和咪唑安定在体外循环麻醉中对术前和术中的酸碱度的影响.方法 40例先天性心脏病患者随机分为两组(异丙酚组、咪唑安定组),监测手术前、主动脉阻断10 min和复温至31℃时血气指标等的动态变化.结果与手术前比,主动脉阻断10 min和复温后,血液pH、PaCO2、HCO3-、BEB两组均有明显变化(P＜0.05),但两组间差异无显著性(P＞0.05).结论异丙酚和咪唑安定在体外循环麻醉中其对酸碱度无明显的影响.     

骨骼肌肌细胞增殖及分化过程中凋亡现象

目的 对骨骼肌分化中的凋亡现象进行初步研究,方法 本实验采用体外培养的C2C12肌母细胞分化模型,用流式细胞仪检测肌细胞分化过程中细胞周期的变化,提取细胞基因组DNA进行电泳分析,用原位末端标记法进行了凋亡细胞染色,电子显微镜观察凋亡小体的形成。结果 Ｃ２Ｃ１２细胞在肌分化诱导２４h和４８h,检测出凋亡现象;而对照组、肌分化诱导７２h组均未检出凋亡现象。结论 在肌肉分化、发育的过程中,某些细胞会按自身程序主动死亡,以凋亡细胞的形式排除。而且具有明显的时间性,终末分化的肌管不易出现凋亡。     

三个半规管阻塞动物模型的建立

目的 旨在建立豚鼠单侧三个半规管阻塞的动物模型。方法 利用２０只豚鼠行单侧三个半规管阻塞,观察手术前后眼震电图、听性脑干反应（ａｕｄｉｔｏｒｙ ｂｒａｉｎｓｔｅｍ ｒｅｓｐｏｎｓｅｓ,ＡＢＲ）、畸变产物耳声发射（ｄｉｓｔｏｒｔｉｏｎ ｐｒｏｄｕｃｔ ｏｔｏａｃｏｕｓｔｉｃ ｅｍｉｓｓｉｏｎ,ＤＰＯＡＥ）及形态学的变化,非手术耳作对照。结果 豚鼠术后１ｄ出现自发性眼震,正弦摆动刺激单侧眼震反应消失,     

后半规管阻塞前后豚鼠前庭及耳蜗功能的动态变化

目的 探讨机械性后半规管阻塞前后豚鼠前庭和耳蜗功能的动态变化。方法 采用２０只豚鼠建立单侧后半规管阻塞的动物模型,观察手术前后眼震电图,听性脑干反应,耳声发射等变化。结果 术后第１天,第３天豚鼠正弦摆动刺激术侧眼震反应,明显减术,术后第５天起双侧眼震恢复正常。术后早期ＡＢＲ阈值一度升高,第５天达高峰,ＡＢＲ阈值平均升高４．５ｄＢ。ＤＰＯＡＥ反应幅度无明显改变。结论 后半规管阻塞能选择性地消除后半规     

15例原发性淀粉样变性的临床与病理分析

目的 加强对有突出肾损害的原发性淀粉样变性的认识,提高诊断水平。方法 对１５例有突出肾损害的原发性淀粉样变性病例资料从多脏器受累情况。骨髓穿刺及活检。血／尿蛋白电泳和电泳及治疗预后等方面进行总结和分析。结果 肾脏、消化、循环和血液系统有不同程度受累,部分病例有骨髓浆细胞增生,血／尿中检出单克隆蛋白。结论本病肾损害有一定特点,尤其特异性的肾脏病理改变可明确诊断 。     

α1-抗糜蛋白酶基因、早老素1基因 与阿尔茨海默病的相关分析

目的探讨中国汉族人中α１抗糜蛋白酶（ＡＡＣＴ）基因、早老素１（ＰＳ１）基因多态性与阿尔茨海默病（Ａｌｚｈｅｉｍｅｒｓｄｉｓｅａｓｅ,ＡＤ）的相关情况。方法应用ＰＣＲＲＦＬＰ方法,在１２３例患者和１４０例正常人中观察ＡＡＣＴ信号肽和ＰＳ１基因多态性的分布,进行关联分析。结果１ＡＤ患者与ＰＳ１基因等位基因１正关联,与等位基因２和基因型２／２负关联,但与１／１基因型无关;２ＡＡＣＴ信号肽基因多态性与ＡＤ无关联;３在三种ＰＳ１基因型中,ＡＡＣＴ信号肽基因多态性与ＡＤ均无关;４在ＡＡＣＴ基因ＡＡ、ＴＴ基因型中,ＰＳ１基因多态性与ＡＤ负关联,而ＴＡ型中ＰＳ１基因与ＡＤ无显著相关。结论中国人群中,ＡＤ与ＰＳ１基因２／２型负关联,而与ＡＡＣＴ信号肽基因多态性无关;ＡＡＣＴ信号肽和ＰＳ１基因多态性之间也无明显的相互影响。     

A photothrombotic ring stroke model in rats with or without late spontaneous reperfusion in the region at risk

This study aimed at developing a dual setup of the photothrombotic ring stroke model with or without late spontaneous reperfusion in the region at risk and to explore the morphological consequences. The exposed crania of adult male Wistar rats were subjected to a ring-shaped laser-irradiation beam (o.d. 5.0 mm, 0.35 mm thick) for 2 min simultaneously with intravenous erythrosin B (17 mg/kg) infusion. Transcardial carbon-black perfusion revealed that a laser intensity of 0.90 W/cm(2) resulted in late, that is, starting at 72 h, spontaneous reperfusion, whereas the lowest laser intensity that produced lack of reperfusion at 7 days post-irradiation was 1.84 W/cm(2). Laser-Doppler flowmetry showed prompt cortical cerebral blood flow (cCBF) reduction both in the ring lesion and region at risk (12% and 25% of control values) after high-intensity irradiation; these reduced flow values were more rapid and pronounced than in the low-intensity irradiation setup as previously shown. The high- compared with low-intensity irradiation setup produced more frequent occurrence of thrombi in the ring-lesion region and a larger ischemic cortical lesion with a more rapid pace of ischemic cellular changes in the ring-lesion region and the region at risk. The region at risk transformed into pannecrosis in the high-intensity, but recovered morphologically in the low-intensity irradiation setup. This dual photothrombotic setup with or without spontaneous reperfusion enables the study of events related to ischemic cell survival or death in an anatomically predefined region at risk.