Effects of personal causation and perceived control on responses to an aversive environment: The more control,the better

A laboratory experiment was conducted to investigate the effects on reactions to aversive noise of three types of personal control: control over the initiation of noise, control over its termination, and combined control over both initiation and termination. On an attention-to-detail measure which occurred concurrently with noise stimulation, subjects' error rates decreased linearly as degree of control increased. Likewise, on a post-noise measure of task persistence, subjects' performance rates increased linearly across the three conditions as degree of control increased. Results were discussed in terms of Seligman's theory of learned helplessness and deCharms' theory of personal causation, and the motivational effects of personal control were emphasized.     

不同血液净化方式对维持性血液透析患者微炎症指标及Fetuin-A的相关性研究

通过研究高通量血液透析(HFHD)和血液透析滤过(OL-HDF)两种血液净化模式对尿毒症患者血清白介素-1β(IL-1β)、超敏C反应蛋白(hs-CRP)、降钙素原(PCT)、钙(Ca)、磷(P)、胎球蛋白A(Fetuin-A)水平的影响,旨在求其相关性.按不同血液净化模式,将维持性血液透析(MHD)患者随机分为HFHD组(A组)30例,OL-HDF组(B组)30例,健康对照组(C组)16例,通过测定A组、B组、C组透析前、A组、B组透析6个月后各项化验指标,经过统计学分析比对发现A组、B组血清Fetuin-A与IL-1β、hs-CRP、P、Ca×P呈负相关.本研究证明,MHD患者存在微炎症状态,其钙化抑制因子Fetuin-A较正常人明显降低,长期OL-HDF治疗(治疗大于6个月)对于改善MHD患者微炎症状态及升高钙化抑制因子Fetuin-A效果均明显优于HFHD.     

不同血液净化方式对维持性血液透析患者微炎症指标及Fetuin-A的相关性研究

通过研究高通量血液透析（HFHD）和血液透析滤过（OL-HDF）两种血液净化模式对尿毒症患者血清白介素-1β（IL-1β）、超敏C反应蛋白（hs-CRP）、降钙素原（PCT）、钙（Ca）、磷（P）、胎球蛋白A（Fetuin-A）水平的影响,旨在求其相关性.按不同血液净化模式,将维持性血液透析（MHD）患者随机分为HFHD组（A组）30例,OL-HDF组（B组）30例,健康对照组（C组）16例,通过测定A组、B组、C组透析前、A组、B组透析6个月后各项化验指标,经过统计学分析比对发现A组、B组血清Fetuin-A与IL-1β、hs-CRP、P、Ca×P呈负相关.本研究证明,MHD患者存在微炎症状态,其钙化抑制因子Fetuin-A较正常人明显降低,长期OL-HDF治疗（治疗大于6个月）对于改善MHD患者微炎症状态及升高钙化抑制因子Fetuin-A效果均明显优于HFHD.     

线粒体与认知老化

目前,心理学、生物学、社会学等多个学科都在关注认知老化。文章从生物学的角度,论述了线粒体和认知老化的关系;介绍了线粒体在数量、分布及其能量供应,Ca2+浓度的维持,引发神经细胞凋亡,及线粒体基因等几个方面对认知老化产生的影响;描述了老化过程中线粒体功能失常引起的认知障碍;从而,为后人对认知老化产生机制的深入研究提供一定的理论依据。