Outcomes after neoadjuvant or adjuvant chemotherapy for cT2-4N0-1 non–small cell lung cancer: A propensity-matched analysis

Objective

Comparative survival between neoadjuvant chemotherapy and adjuvant chemotherapy for patients with cT2-4N0-1M0 non–small cell lung cancer has not been extensively studied.

AN UNUSUAL BILATERAL VAGAL PARAGANGLIOMAS： ONE CASE STUDY

VAGAL paraganglioma VP)is an uncommonneoplasm originating from neural crest paragan-glion cells located along the vagus nerve,repre-senting less than5%of all paragangliomas of the head andneck.1Despite improvement in microsurgical techniques,management of…     

职业性萘暴露工人的健康监护结果评价

目的：讨论萘对人体的慢性毒效应和亚临床客观检测指标。方法：对河南省萘暴露工人（环境接触萘浓度平均为８．２５～２６．４３ｍｇ／ｍ３）进行了健康监护和医学动态观察。结果：发现长期萘暴露工人的白细胞、血小板减少及眼晶体混浊检出率显著高于对照组（Ｐ＜０．００１）；血清ＳＯＤ同功酶、ＧＳＨ－ＰＸ活性显著低于对照组，而ＬＰＯ水平、神经元特异性烯醇化酶（ＮＳＥ）活性水平以及外周血染色体畸变和微核阳性检出率均显著高于对照组（Ｐ＜０．００１）。神经行为功能检查结果，主要为消极情绪增加，记忆力下降等。事件相关电位Ｐ３００峰潜伏期比对照组显著延长，与对照组差异显著（Ｐ＜０．０５）。结论：慢性低浓度萘暴露对工人主要损害部位（靶器官）有皮肤，眼、血液和神经组织等。ＮＣＴＢ、ＮＳＥ、Ｐ３００三项可作为早期神经受损的客观指标。     

植物营养活力素对小鼠生长及耐受能力的影响

以不同剂量的植物营养活力素（ＰＶＮ）喂饲小鼠，对小鼠的体重增长、耐寒、耐热、耐力等进行了观测。结果：用药后实验小鼠的体重和胸脾系数明显增加；耐寒、耐热及持续游泳时间明显延长。表明ＰＶＮ可明显提高小鼠的体重增长和对应激的耐受能力，提示其营养作用不仅适用于植物，而且适用于动物。     

Cross-cultural invariance of the Academic Expectations Stress Inventory: Adolescent samples from Canada and Singapore

We provide further evidence for the two-factor structure of the 9-item Academic Expectations Stress Inventory (AESI) using confirmatory factor analysis on a sample of 289 Canadian adolescents and 310 Singaporean adolescents. Examination of measurement invariance tests the assumption that the model underlying a set of scores is directly comparable across groups. This study also examined the cross-cultural validity of the AESI using multigroup confirmatory factor analysis across both the Canadian and Singaporean adolescent samples. The results suggested cross-cultural invariance of form, factor loadings, and factor variances and covariances of the AESI across both samples. Evidence of AESI's convergent and discriminant validity was also reported. Findings from t-tests revealed that Singaporean adolescents reported a significantly higher level of academic stress arising from self expectations, other expectations, and overall academic stress, compared to Canadian adolescents. Also, a larger cross-cultural effect was associated with academic stress arising from other expectations compared with academic stress arising from self expectations.