Detection of respiratory syncytial virus antigen in nasal washings by Abbott TestPack enzyme immunoassay.

We compared the new Abbott TestPack (TP) respiratory syncytial virus (RSV) enzyme immunoassay (EIA) with cell culture and two commercial RSV EIAs (from Abbott Diagnostics and Kallestad Laboratories) by using split samples of fresh nasal washings from children with suspected RSV disease. Two tubes of HEp-2 cells were inoculated and observed for cytopathic effect for 14 days, and isolates were confirmed by immunofluorescence. The TP EIA was performed by following the manufacturer's instructions. Specimens positive by TP EIA but negative by culture were examined in a competitive inhibition (blocking) assay using the TP EIA, and rabbit anti-RSV serum. Of 218 specimens, 93 were positive by culture, 105 were positive by TP EIA, 80 were positive by the Abbott Diagnostics EIA, and 87 were positive by the Kallestad Laboratories EIA. The sensitivity, specificity, positive predictive value, and negative predictive value of the TP EIA were 92, 86, 81, and 93%, respectively. Of 20 apparently false-positive TP EIAs, 10 of 14 that were positive when retested were neutralized in the blocking assay, indicating that they were truly positive. The recalculated sensitivity, specificity, positive predictive value, and negative predictive value of the TP EIA were 92, 91, 90, and 93%, respectively. We conclude that the TP EIA is easy to perform, rapid (less than 0.5 h), and accurate.     

Blepharophimosis sequence and diaphragmatic hernia associated with interstitial deletion of chromosome 3 (46,XY,del(3)(q21q23)).

A case of blepharophimosis, ptosis, and epicanthus inversus (BPES) associated with prenatally diagnosed diaphragmatic hernia and interstitial deletion of the long arm of chromosome 3, del(3)(q21q23), is reported. Comparison with other cases of BPES resulting from 3q rearrangements indicate that this disorder, previously assigned to 3q2, can now be more accurately mapped to 3q23.     

运动训练对慢性应激大鼠β—内啡肽分泌的影响

目的：探讨运动训练对慢性应激大鼠β－内啡肽（β－EP）分泌的变化。方法：对大鼠进行为期8周的不同负荷运动训练,并在运动训练后期给予3周的冷刺激,测定大鼠下丘脑和血清中β－EP的含量。结果：（1）经过3周的冷应激后,大鼠产生显著的身心变化,下丘脑和血清β－EP的含量均显著升高,从而表明冷应激可使机体β－ED的合成和释放增多。（2）经过8周的运动训练后,大鼠下丘脑β－EP含量显著升高,血清β－EP含量显著下降;而对运动训练的大鼠施加冷刺激后,大鼠下丘脑和血清中β－EP含量显著低于应激组,以中等负荷运动训练组最为明显。结论：运动训练可以减少内源性β－EP的释放,有效对抗大鼠机体对冷刺激产生的应激反应,维持机体在应激状态下内分泌功能的稳定。     

糖尿病患者饮食的自我调控单因素回归分析

目的 研究糖尿病患者饮食和自我调控的关系。方法 采用问卷法和访谈法。结果 经过对与饮食相关的诸因素进行Logistic单因素分析,每次喝酒量的多少,家人对饮食疗法执行的支持情况,性别等三项指标,其OR值均大于1,是正调控因素。说明自我调控越强喝酒越少;家人越支持饮食疗法执行情况越好;男性的自我调控力在执行饮食疗法时比女性高,测血糖的时间,OR值小于1,自我调控力越高的人测血糖越定时。结论 饮食疗法的控制和自我调控力并非正相关。     

Using psychometric ability to improve education in ultrasound-guided regional anaesthesia: a multicentre randomised controlled trial

The learning curve for novices developing regional anaesthesia skills, such as real-time ultrasound-guided needle manipulation, may be affected by innate visuospatial ability, as this influences spatial cognition and motor co-ordination. We conducted a multinational randomised controlled trial to test if novices with low visuospatial ability would perform better at an ultrasound-guided needling task with deliberate practice training than with discovery learning. Visuospatial ability was evaluated using the mental rotations test-A. We recruited 140 medical students and randomly allocated them into low-ability control (discovery learning), low-ability intervention (received deliberate practice), high-ability control, and high-ability intervention groups. Primary outcome was the time taken to complete the needling task, and there was no significant difference between groups: median (IQR [range]) low-ability control 125 s (69–237 [43–600 s]); low-ability intervention 163 s (116–276 [44–600 s]); high-ability control 130 s (80–210 [41–384 s]); and high-ability intervention 177 s (113–285 [43–547 s]), p = 0.06. No difference was found using the global rating scale: mean (95%CI) low-ability control 53% (95%CI 46–60%); low-ability intervention 61% (95%CI 53–68%); high-ability control 63% (95%CI 56–70%); and high-ability intervention 66% (95%CI 60–72%), p = 0.05. For overall procedure pass/fail, the low-ability control group pass rate of 42% (14/33) was significantly less than the other three groups: low-ability intervention 69% (25/36); high-ability control 68% (25/37); and high-ability intervention 85% (29/34) p = 0.003. Further research is required to determine the role of visuospatial ability screening in training for ultrasound-guided needle skills.     

An analytical method for quantitative estimation of the cytotoxicity of dental alloys

INTRODUCTION　　The two mostimportantcriteria fordental materialsare their bio-functionalandbio-compatible endurance within the anticipated life-span of the dental restoration inthe mouth.The bio-compatibility of amaterial relates mainly to theallergenici…     

Thio TEPA pharmacokinetics during intravesical chemotherapy and the influence of Tween 80

Summary A pharmacokinetic study of randomised crossover design was carried out in which eight patients with recurrent stage pTa or pT1 transitional cell carcinoma of the bladder were given thio TEPA (30 mg) in distilled water or in 10% (v/v) Tween 80 (30 ml) intravesically for 2 h, followed 3 months later by the alternative treatment. Thio TEPA and its primary metabolite, TEPA, were measured in plasma and urine using a sensitive and specific chromatographic assay. Large differences between patients were observed in the proportion of thio TEPA absorbed, ranging from 20%–78%. Peak plasma levels of thio TEPA were observed within 1 h of intravesical administration. By 2 h after administration the plasma levels of TEPA were similar to those of thio TEPA and, in contrast to those of the parent compound, remained at a similar level over the next 4 h. The rate of absorption of thio TEPA was not influenced by Tween 80, but it did cause statistically significant increases in mean peak plasma levels (from 101 to 154 ng/ml) and mean AUC values (from 0.376 to 0.496 g h per ml) and a decrease in the mean half-life (from 1.83 to 1.25 h). To obtain plasma levels similar to those achieved after instillation with thio TEPA alone, the dose should be reduced with Tween 80.     

nm23—H1基因在肾母细胞瘤中的表达

目的：研究ｎｍ２３－Ｈ１基因在肾母细胞瘤中的表达及意义。方法：用免疫组化ＳＰ法分析ｎｍ２３－Ｈ１基因表达与肾母细胞瘤多种指标的关系。结果：ｎｍ２３－Ｈ１基因高度表达与肿瘤临床分期,病理分级及淋巴结转移有关,与年龄,性别及病理分型无关。结论：ｎｍ２３－Ｈ１基因能抑制淋巴结癌转移,可作为评价肾母细胞瘤恶性程度,肿瘤进展及预后的指标。