Executive functioning and health-related quality of life in pediatric sickle cell disease

Research consistently indicates that children with sickle cell disease (SCD) face multiple risk factors for neurocognitive impairment. Despite this, no empirical research to date has examined the impact of neurocognitive functioning on quality of life for this pediatric group. Thus, the current study aims to examine the relationship between executive functioning and quality of life in a sample of children with SCD and further explore psychosocial and family/caregiver resources as moderators of this relationship. A total of 45 children with SCD aged 8 to 16 years and their caregivers completed measures of quality of life, behavioral ratings of executive functioning, and psychosocial functioning. Hierarchical linear regression models were utilized to determine the impact of executive functioning on quality of life and further test the interaction effects of proposed moderating variables. Controlling for age, pain, and socioeconomic status (SES), executive functioning was found to significantly predict child- and parent-reported quality of life among youth with SCD. Psychosocial resources of the primary caregiver or family was not found to moderate the relationship between executive functioning and quality of life. These results provide the first empirical evidence that lower executive skills negatively predict quality of life for children with SCD, supporting clinical and research efforts which aim to establish efficacious interventions that target cognitive decrements within this pediatric population.     

CD4＋调节性T细胞与多脏器功能障碍综合征免疫功能紊乱

免疫功能紊乱是多脏器功能不全综合征发生的重要原因之一,其机制仍不明了。本文概述CD4＋调节性T细胞在免疫紊乱发生机制中的作用,及其潜在的治疗价值,拓宽MODS的免疫调节治疗的思路。     

胸腔镜下非小细胞肺癌的外科治疗：一项原则和两个基本点

胸腔镜下肺叶切除术目前已经成为早期非小细胞肺癌外科治疗的首选手术方式。随着胸腔镜手术技巧和手术器械的不断发展,胸腔镜下肺叶切除术的方式千变万化。但不管采取何种手术方式,手术指征的严格把握,手术步骤的规范化是必须要遵循的。本文将从这些方面进行阐述。     

小胶质细胞在糖尿病视网膜病变发病机制中的作用

本文阐述近年来通过科学研究,科学工作者坚持科学精神,努力探索小胶质细胞在糖尿病视网膜病变发病机制中所起的作用,提出其可能通过炎症因子的刺激,释放炎症介质,参与免疫炎症反应,从而损伤视网膜血管。了解其作用机制,为糖尿病视网膜病变的防治提供了新的思路。     

Increasing following headway with prompts, goal setting, and feedback in a driving simulator

We evaluated the effects of prompting, goal setting, and feedback on following headway of young drivers in a simulated driving environment and assessed whether changes produced in following headway were associated with reductions in hard braking when drivers were and were not using cell phones. Participants were 4 university students. During baseline, drivers spent half of the time talking on cell phones while driving. At the start of the intervention, drivers were prompted to increase following headway while on the cell phones and were provided a specific target for following headway. Drivers were given feedback on increasing following headway when on cell phones at the end of each session. The intervention package was associated with an increase in following headway and a decrease in hard braking when participants were on and off the cell phones. Cell phone use did not affect any of the measures.     

记忆过程中海马CA1区神经元的集群放电特征

观察空间工作记忆过程中海马CA1区神经元群的放电特征。应用多通道神经元集群放电记录技术, 同步观察和记录清醒大鼠在执行延迟选择任务时的行为轨迹以及海马CA1区神经元的放电活动。发现：海马CA1区位置细胞的位置野是在学习过程中逐渐形成并可消退; 部分位置细胞的放电对未来目标定向性行为具有预测作用; 在空间工作记忆过程中, 神经元放电之间的相关性加强, 神经元之间以及神经元与局部场电位之间存在相位编码方式。结果提示海马CA1区神经元参与对空间信息的初级编码和加工, 并为未来行为决策提供有效信息, 而且海马对信息的加工是通过局部神经网络进行, 时间编码可能是海马信息加工的重要方式之一。     

骨巨细胞瘤外科治疗几个问题的思考

骨巨细胞瘤是临床上常见的骨肿瘤,其治疗方式由以前的截肢术发展到保肢术,一直到现在的多种局部切除与功能重建方式,透过其治疗理念的更新,以及手术技术的转变,不难看出临床医生应重视循证医学实践,不断更新观念,坚持个体化治疗,明确切除范围、切除方式与重建方法及肢体功能之间的关系,不断改善患者的生活质量。     

晚期非小细胞肺癌化疗的冷思考

晚期非小细胞肺癌提倡以化疗为主综合治疗,可以延长生存期,提高生存率。但目前化疗取得的疗效虽然较既往有提高,但提高生存期有限,且在药效经济学方面存在争议,缓解症状的作用也有限,联合靶向治疗的疗效也在观望中。临床肿瘤学工作者应正确认识,以循证医学为指导,开展规范化化疗,同时也注重个体化化疗,并期待晚期非小细胞肺癌化疗的新突破。     

从抗原提呈细胞到抗原提呈小体

树突状细胞是体内专职抗原提呈细胞,在抗肿瘤免疫治疗中发挥重要作用。而exosome是树突状细胞分泌的一种膜性微囊小体,富含树突状细胞的MHC-I/II类分子、协同刺激分子等多种生物活性分子,亦在抗肿瘤免疫应答中发挥重要作用。从树突状细胞到exosome,是细胞性瘤苗向非细胞性瘤苗的飞跃,对免疫治疗研究产生极为深远的影响。