运动疲劳导致大鼠焦虑并伴有海马CA1区θ节律活动增强

目的:研究运动疲劳对大鼠焦虑情绪的影响,观测海马CA1区场电位θ节律震荡的变化,揭示运动疲劳引发不良情绪效应的可能神经电生理机制.方法:雄性Wistar大鼠随机分为对照组(control)和运动疲劳组(exercise training,ET),采用反复7d力竭跑台训练方式建立疲劳模型.行为学实验采用高架十字迷宫观察大...     

孙远征教授运用循经远取动法治疗痛症举隅

痛症是临床上较为常见的症状之一,往往影响患者的工作与生活,近年来得到了人们的广泛重视.孙远征教授在明辨痛症病因、针灸镇痛机理的基础上,根据传统经络循行及疼痛部位的特点,结合"标本根结"理论,遵循"经脉所过,主治所及"和"上病下治,下病上治"的选穴原则,同时配合运动疗法,提出了循经远取动法治疗痛症.尤其在治疗软组织痛症方...     

和法在糖尿病中的运用

糖尿病寒热错杂、虚实兼夹,可分为湿热蕴脾证、肝郁气滞证、肝胃郁热证、胃热阴虚证、肠道湿热证、血脉瘀滞证等证型,治疗当运用和法辛开苦降、疏肝理气、清泻热结、滋阴清热、清热利湿、活血化瘀,选用半夏泻心汤、四逆散、大黄黄连泻心汤、大柴胡汤、白虎加入参汤、葛根芩连汤、桃核承气汤以调整气机、平调寒热、补虚泻实,并在药物治疗的基础...     

抗癫痫药物对戊四氮点燃大鼠认知功能影响的研究

目的研究抗癫痫药物（AEDs）对大鼠认知功能的影响。方法10周龄健康雄性SD大鼠70只,随机分为7组,每组10只。随机选取1组作为正常对照组（NS组）;其余6组用戊四氮（PTZ）点燃,致痫后随机选取1组作为癫痫对照组（PTZ组）,其余5组分别给予卡马西平（CBZ组）、苯妥英钠（PHT组）、丙戊酸钠（VPA组）、妥泰（TPM组）及拉莫三嗪（LTG组）控制癫痫发作。治疗2周后用Morris水迷宫进行测试。结果TPM组较其他6组在每次测试中所用时间长（P〈0．05）。在第1天测试中,TPM组LTG组所用时间长（P〈0．05）;在第2天测试中,TPM组比VPA组、LTG（P〈005）;在第3天测试中,TPM组比PTZ组、LTG组所用时间长（P〈0．05）;在第4天测试中,TPM组比CBZ组、VPA组、LTG组所用时间长（P〈0．05）。6次测试所用总时间TPM组最长,PHT组次之,LTG组最短（P〈0．05,P〈0、01）。4天总测试时间TPM组比CBZ组、VPA组、PTZ、LTG组长（P〈0．05）。TPM组定向寻找平台象限时间较其他6组长（P〈0．01）。TPM组逗留时间明显短于CBZ组（P〈0．05）、LTG组（P〈0．01）。结论TPM、PHT可损害大鼠认知功能,而VPA、CBZ、LTG对大鼠认知功能有改善作用。     

柴胡加龙骨牡蛎汤联合腹针治疗脑卒中后抑郁疗效观察

目的:观察柴胡加龙骨牡蛎汤联合腹针治疗脑卒中后抑郁的临床疗效。方法:将94例失眠患者随机分为对照组和治疗组各47例,对照组采用氟哌噻吨美利曲辛片治疗,治疗组采用柴胡加龙骨牡蛎汤联合腹针治疗,两组均连续治疗6周后判定临床疗效,比较两组患者治疗前后汉密尔顿抑郁量表(HAMD)评分及Barthel指数(BI)变化。结果:两组患者治疗后HAMD评分较本组治疗前明显降低(P<0.05),BI评分较治疗前明显升高(P<0.05),且治疗组治疗后HAMD评分低于对照组(P<0.05),BI评分高于对照组(P<0.05)。两组患者治疗后中医证候积分与治疗前比较,差异有统计学意义(P<0.05);两组患者中医证候积分差值比较,差异有统计学意义(P<0.05)。结论:柴胡加龙骨牡蛎汤联合腹针治疗脑卒中后抑郁可改善患者抑郁症状。     

第三代双源CT能谱纯化单能量技术在直肠癌检查中的应用价值

目的:评价第3代能谱纯化技术对直肠肿瘤双能扫描图像质量及辐射剂量的影响.方法:选取70例直肠癌患者,均行双能扫描,按照锡滤过能谱纯化厚度的不同,将其分为2代组(36例)和3代组(34例),2代组采用第2代双源SOMATOM Definition Flash CT扫描,3代组采用第3代双源SOMATOM Definiti...     

Anatomical and behavioral impact of a lentiviral tool tapping onto hippocampal serotonin reuptake in rats

We aimed at the further characterization of rats in which SERT gene silencing was achieved by hippocampal injection of a lentiviral vector, carrying three si-RNA to block SERT mRNA at 66% of normal levels. Improved self-control and reduced restlessness were already demonstrated in these rats. Present further studies consisted of male adult rats, bilaterally inoculated within the hippocampus; control rats received lentivirus particles inactivated with heat. Both groups were maintained in isolation for 5 months, starting from inoculation. Neurochemical changes were studied by proton magnetic resonance spectroscopy (1H-MRS): we found increased hippocampal viability and bioenergetic potential; however, rats showed a behaviorally depressive pattern, also characterized by enhanced affiliation. Based on the extent of such effects, the whole lenti-SERT group was divided into two subgroups, termed intermediate- and extreme- phenotype profiles. While all rats had a widespread modification within dorsal/ventral striatum, amygdala, and hypothalamus, only the former subgroup showed an involvement of Raphé medialis, while, for the latter subgroup, an increase of SERT within hippocampus was unexpectedly caused. Within the less-affected “intermediate” rats, hippocampal 5-HT7 receptors were down-modulated, and also similarly within substantia nigra, septum, and neocortex. This picture demonstrates that additional rather than fewer neurobiological changes accompany a lower phenotypic expression. Overall, tapping hippocampal SERT affected the balance between habits versus strategies of coping by promoting morphogenetic processes indicative of a serotonergic fiber plasticity. Supplementary studies about serotonergic dynamics and neurogenesis within fronto-striatal circuits are needed.     

Anxiety‐like behavior in female mice changes by feeding,possible effect of guanylate cyclase C

Anxiety disorders are the most frequent mental disorders and are more prevalent in the female population. Up to date, an involvement of guanylate cyclase A and B in anxiety‐like behavior has been suggested. In this study, we showed an expression of guanylate cyclase C (GC‐C) in the amygdala which is regulated by feeding. Therefore, we further investigated sex differences of GC‐C effects on anxiety levels with special attention to female estrous cycle and feeding. The effects of estrous cycle and feeding were investigated by several behavior tests: elevated plus maze, home cage escape and novelty‐induced hypophagy. Possible changes in GC‐C expression in amygdala and hypothalamus during estrous cycle were established by qPCR. When GC‐C is activated (after a meal), the sex difference in all behavior tests used was abolished. As the expression of mRNA for GC‐C in the amygdala increases 2 hr after a meal only in female animals, the anxiety levels change after a meal again only in female animals. When the anxiety levels are investigated, it is very important to pay attention not only to estrous cycle in female animals but also when animals were fed compared to the time point of the experiments. Concluding from our results, the sex differences in the incidence of anxiety disorders in humans could be GC‐C dependent.     

Hippocampal and prefrontal contributions to memory retrieval: Examination of immediate early gene,NMDA receptor and environmental interactions

Animals can use a range of strategies to recall important locations. These include simple stimulus–response strategies and more complex spatial (place) strategies, which are thought to have distinct neural substrates. The hippocampus—and NMDA receptor activation therein—is considered to be crucial for spatial, but not response strategies. The medial prefrontal cortex has also been implicated in memory retrieval; however, evidence concerning its specific role is equivocal. Both hippocampal and prefrontal regions have been associated with flexible behavioural responding (e.g. when task demands change). Here, we investigated the use of spatial and non‐spatial strategies in the Morris water maze and their associated brain areas in rats using immediate early gene (IEG) imaging of Zif268 and c‐Fos. Specifically, we charted the involvement of hippocampal and prefrontal subregions during retrieval of spatial and non‐spatial memories. Behavioural flexibility was also examined using intact and partial cue configurations during recall. Results indicated that regions of both the hippocampus (area CA3) and prefrontal cortex (anterior cingulate cortex) were preferentially engaged in spatial memory recall compared to response learning. In addition, both spatial and non‐spatial memories were dependent on NMDA receptor activation. MK801 impaired recall performance across all groups and reduced IEG activation across hippocampal and prefrontal regions. Finally, IEG results revealed divergent patterns of Zif268 and c‐Fos activity and support the suggestion that Zif268 plays a functional role in the recall of long‐term memories.