Guidelines for single fiber EMG

This document is the consensus of international experts on the current status of Single Fiber EMG (SFEMG) and the measurement of neuromuscular jitter with concentric needle electrodes (CNE – CN-jitter). The panel of authors was chosen based on their particular interests and previous publications within a specific area of SFEMG or CN-jitter. Each member of the panel was asked to submit a section on their particular area of interest and these submissions were circulated among the panel members for edits and comments. This process continued until a consensus was reached. Donald Sanders and Erik Stålberg then edited the final document.     

关于中药小分子动力学模拟扩散系数的讨论

文章对中药小分子动力学模拟扩散系数作了系统的研究。总结和归纳出普适的选择模拟时间的规律,并且解释了实际模拟时所出现的拖尾现象,为模拟中药小分子在生物体系中扩散打下了基础。     

人尿中氢可酮及其代谢物的检测研究

用气相色谱 质谱联用仪(GC/MSD)检测人尿中氢可酮及其代谢物双氢吗啡。尿样经酸解、乙醚/异丙醇提取后,用甲氧胺吡啶液将羰基保护生成肟,再用MSTFA-MBTFA及MSTFA-TMSI衍生化后,经GC/MS分析,形成各自的特征图谱。方法灵敏、准确,可快速鉴别氢可酮、可待因、双氢可待因等结构相似药物。     

The effect of training for a participatory ergonomic intervention on physical exertion and musculoskeletal pain among childcare workers (the TOY project) – a wait-list cluster-randomized controlled trial

ObjectiveMany employees have high physical exertion at work and suffer from musculoskeletal pain (MSP) leading to sickness absence with large costs. Participatory ergonomics is a potentially effective intervention for reducing physical exertion, MSP and sickness absence. The main aim of this study was to investigate the effectiveness of a 20-week workplace participatory ergonomic intervention among childcare workers on physical exertion and MSP.MethodsIn a two-arm cluster-randomized trial, 190 workers were recruited from 16 childcare institutions and randomly assigned to either a 20-week participatory ergonomics intervention consisting of three training workshops or a control group receiving usual care. Primary outcomes were physical exertion during work, maximal pain intensity, number of pain regions, and pain-related work interference. Secondary outcomes were MSP-related sickness absence, need for recovery (NFR), employee involvement, and self-efficacy. We followed the intention-to-treat principle and adhered to the registered study protocol (ISRCTN10928313).ResultsAfter 20 weeks, half the workers noticed some positive changes in their work. However, there were no statistically discernible effects in physical exertion, maximum pain intensity, pain-related work interference, or number of pain regions. We found a significant reduction of MSP-related sickness absence in the intervention compared to the control group [-0.48 days per month (95% confidence interval (CI), -0.8– -0.1]. We found no significant effects in NRF or involvement of employees, but self-efficacy was reduced in the intervention compared to the control group [-0.2 (95% CI, -0.3– -0.0)].ConclusionThis 20-week training for a participatory ergonomic intervention in childcare workers did not show effects on physical exertion and MSP, but was both feasible and effective in reducing MSP-related sickness absence.     

羚羊角及其混伪品脂类成分GC/MSD分析及聚类分析

目的:阐明及鉴别羚羊角及其混伪品中脂类化学成分。方法:溶剂法提取脂类成分,经甲酯化,采用气相色谱-质谱-计算机联用技术分离鉴定,归一化法计算相对百分含量,并进行聚类分析。结果:从4种牛科动物角中共鉴定出14种脂类成分,其中从羚羊角中鉴定出9种脂肪酸类成分,4种牛科动物角采用系统聚类法可分为3类。结论:可利用主要脂肪酸类成分棕榈酸、硬脂酸、油酸之比鉴别羚羊角。     

Arylsulphatase A and 2',3'-cyclic nucleotide 3'-phosphohydrolase activities in the brains of myelin deficient mutant mice

Arylsulphatase A and 2',3'-cyclic nucleotide 3'-phosphohydrolase activities of myelin deficient mutant mice brains were studied. The results indicated that there were no changes in arylsulphatase A activity of the developing mutant brain, whereas the activity of 2',3'-cyclic nucleotide 3'-phosphohydrolase decreased considerably. The data obtained in this study suggest that in brain arylsulphatase A activity is localized in cells other than oligodendroglia.     

全氟丙烷人血白蛋白微球中全氟丙烷的含量测定

目的 :测定全氟丙烷人血白蛋白微球中的全氟丙烷含量。方法 :Tekmar3000型吹扫 -捕集浓缩仪与HP5972型色谱 -质谱检测器联用。结果 :全氟丙烷气体含量为119 1～433 5μg/ml。结论 :本方法可行 ,可作为有效质控手段。     

Reliability of Upper Extremity Tests Measured by the ErgosTM Work Simulator: A Pilot Study

The objective of this paper was to assess the reliability of functional capacity evaluation (FCE) tests of the upper extremity in Ergos from three perspectives: human performance (in terms of a learning effect); order of the physical intensity (force) of the subtests (intensity effect); and performance in time (time of day effect). An experimental within-subjects design was performed. Twelve healthy males/females were tested in the morning or in the afternoon. The tests focused on sensibility, coordination, and strength of the upper extremity. A counterbalanced design was used for three orders of the three types of tests increasing in intensity. Each participant was tested three times over the course of 4 weeks. A learning effect was found in sensibility and coordination subtests. No order effect was observed in terms of the intensity of the subtests. A time effect was found in coordination tasks: keyboarding performance was better in the morning, and handling better in the afternoon. It was concluded that repeated upper extremity FCE testing in the present pilot study was found to be reliable over a 4-week period in healthy subjects.     

LC/DAD/MSD技术研究大鼠服药胆汁中盐酸非洛普I相代谢产物

目的　研究大鼠服药后胆汁中盐酸非洛普(DDPH)I相代谢物。方法　大鼠做胆管插管,分别收集ipDDPH之前的空白胆汁及服药后12h内的服药胆汁,将大鼠胆汁以葡糖醛酸酶水解后进C-18SPE小柱进行纯化富集,再进行LC/DAD/MSD分析;同时将合成的6个DDPH模拟代谢物M₁-M₆的对照品混合液按相同条件进行LC/DAD/MSD分析对照。结果　大鼠服药胆汁色谱图中峰A,B,C,D,E和F分别与M₁,M₂,M₃,M₅,M₄和M₆的保留时间、紫外吸收光谱、分子量及碎片离子完全一致。结论　M₁,M₂,M₃,M₄,M₅和M₆为大鼠ipDDPH后产生的体内I相代谢物。