目的探讨高血压病患者24h动态血压变化与认知功能的关系。方法采用多种神经心理学量表对60例原发性高血压病患者进行评定;所有受试对象进行24h动态血压的测量。结果在控制年龄、性别及受教育程度的影响后,高血压病患者MMSE(the mini-mental state examination)得分与除舒张压负荷值外的所有血压指标均呈显著负相关。CAMCOG-C(the cognitive and self-contained part of the Cam-bridge examination for mental disorders of the elderly-Chinese e-dition)得分与24h平均收缩压,夜间收缩压负荷值呈显著负相关,其子项学习记忆、注意功能、运用等均与部分动态血压指标呈显著负相关。MMSE与24h、日间及夜间平均脉压呈显著负相关。CAMCOG-C与24h平均脉压呈显著负相关,其子项学习记忆、运用、注意功能、思维等亦与部分动态脉压及脉压指数呈显著负相关。结论高血压病患者收缩压及其负荷值的增高可通过多途径影响多区域认知功能,脉压及脉压指数的增大可能是高血压患者认知损害的危险因素之一。
Neuronal ion channels of different types often do not function independently but will inhibit or potentiate the activity of other types of channels,a process called cross-talk.The N-methyl-D-aspartate receptor (NMDA receptor) and the γ-aminobutyric acid type A receptor (GABAA receptor) are important excitatory and inhibitory receptors in the central nervous system,respectively.Currently,cross-talk between the NMDA receptor and the GABAA receptor,particularly in the central auditory system,is not well understood.In the present study,we investigated functional interactions between the NMDA receptor and the GABAA receptor using whole-cell patch-clamp techniques in cultured neurons from the inferior colliculus,which is an important nucleus in the central auditory system.We found that the currents induced by aspartate at 100 μmol L-1 were suppressed by the pre-perfusion of GABA at 100 μmol L-1,indicating cross-inhibition of NMDA receptors by activation of GABAA receptors.Moreover,we found that the currents induced by GABA at 100 μmol L-1 (IGABA) were not suppressed by the pre-perfusion of 100 μmol L-1 aspartate,but those induced by GABA at 3 μmol L-1 were suppressed,indicating concentration-dependent cross-inhibition of GABAA receptors by activation of NMDA receptors.In addition,inhibition of IGABA by aspartate was not affected by blockade of voltage-dependent Ca2+ channels with CdCl2 in a solution that contained Ca2+,however,CdCl2 effectively attenuated the inhibition of IGABA by aspartate when it was perfused in a solution that contained Ba2+ instead of Ca2+ or a solution that contained Ca2+ and 10 mmol L-1 BAPTA,a membrane-permeable Ca2+ chelator,suggesting that this inhibition is mediated by Ca2+ influx through NMDA receptors,rather than voltage-dependent Ca2+ channels.Finally,KN-62,a potent inhibitor of Ca2+/calmodulin-dependent protein kinase II (CaMKII),reduced the inhibition of IGABA by aspartate,indicating the involvement of CaMKII in this cross-inhibition.Our study demonstrates a functional interaction
CONG DanNiTANG ZhengQuanLI LongZhuHUANG YiNaWANG JunCHEN Lin
目的评价中文版可重复神经心理状态测验（repeatable battery for the assessment of neuro-psychological status，RBANS）在精神分裂症患者人群应用的信度和效度。方法筛查100名精神分裂症患者，其中98名患者完成中文版RBANS问卷、世界卫生组织认知功能评价成套神经心理测验（WHO-BCAI）和Stroop字色干扰测验，同时使用阳性阴性综合征量表（PANSS）和临床疗效总评（CGI）评价患者病情的严重程度。其中43例患者间隔一月后复测RBANS。对获取的数据进行相关分析等。结果RBANS总分与RBANS5个因子分的相关系数具有统计学意义（r=0.475-0.778，P〈0.001）。RBANS总分重测信度ICC为0.877，5个因子ICC从0.453-0.875。除了RBANS的视觉空间结构与WHO—BCAI的延迟回忆，RBANS的语言与WHO—BCAI的视觉辨认功能、空间结构相关系数未达到统计学意义外，RBANS总分、各因子分与WHO-BCAI及Stroop字色干扰测验的相关系数具有统计学意义。结论中文版RBANS在精神分裂症患者中应用具有较好的信度和效度，可作为精神分裂症患者认知功能水平的筛查工具。
