热休克蛋白70在动脉粥样硬化发病中的双重作用

大多研究表明,热休克蛋白70通过抗凋亡、抗氧化及抗炎症反应而在动脉粥样硬化发病中起保护作用。但亦有研究表明,热休克蛋白70通过促凋亡、促进炎症反应而在动脉粥样硬化的发生发展中起促进作用。说明热休克蛋白70在动脉粥样硬化发病中有双重作用,进行基础研究和临床干预时应考虑到其双面性。     

热休克蛋白7O在动脉粥样硬化发病中的双重作用

大多研究表明,热休克蛋白70通过抗凋亡、抗氧化及抗炎症反应而在动脉粥样硬化发病中起保护作用.但亦有研究表明,热休克蛋白70通过促凋亡、促进炎症反应而在动脉粥样硬化的发生发展中起促进作用.说明热休克蛋白70在动脉粥样硬化发病中有双重作用,进行基础研究和临床干预时应考虑到其双面性.     

C-反应蛋白与动脉粥样硬化——谁才是始作俑者

C-反应蛋白可用于监测冠心病患者病情变化、预测冠心病的预后以及预报健康人群冠心病的发病风险。最近的研究显示,C-反应蛋白可能是动脉粥样硬化的始动因子。药物干预可以通过降低C-反应蛋白发挥抗动脉粥样硬化作用。本文分析了C-反应蛋白与动脉粥样硬化的因果关系及其在临床工作中的重要意义。     

C-反应蛋白与动脉粥样硬化——谁才是始作俑者

C-反应蛋白可用于监测冠心痛患者病情变化、预测冠心病的预后以及预报健康人群冠心病的发病风险.最近的研究显示,C-反应蛋白可能是动脉粥样硬化的始动因子.药物干预可以通过降低C-反应蛋白发挥抗动脉粥样硬化作用.本文分析了C-反应蛋白与动脉粥样硬化的因果关系及其在临床工作中的重要意义.     

小檗碱抗动脉粥样硬化作用及其机制研究进展

小檗碱是从黄连等植物中提取出的含异喹啉类化合物的一种传统中药,作为抗炎、抑菌药物在临床上广泛应用。动脉粥样硬化是导致心脑血管疾病的主要病因,其发病机制经历了脂质渗入学说、炎症反应学说、损伤应答学说等多学说演变过程。近年来研究显示,小檗碱具有防治动脉粥样硬化的作用。本文从调节血脂、抗炎、抗氧化应激、抑制平滑肌细胞增殖和迁移、抗血栓等方面,对小檗碱抗动脉粥样硬化的作用及机制加以综述,为其应用于临床提供理论基础。     

雷公藤甲素抗肿瘤作用机制的研究进展

雷公藤甲素是在雷公藤中提取的一种主要的活性有效成分,具有抗炎、免疫抑制、抗肿瘤等多重作用。大量的体内外研究证实其对多种癌症具有良好的抗肿瘤活性,本文主要就雷公藤甲素通过雌激素受体、MAPK通路、热休克蛋白、p53基因的表达、WNT通路、核转录因子、肿瘤坏死因子相关凋亡诱导配体等分子水平方面的抗肿瘤作用机制进行阐述。     

血管平滑肌细胞在动脉粥样硬化发生中的哲学思维

随着对血管平滑肌细胞增殖在动脉粥样硬化中研究的不断深入,逐步意识到细胞凋亡的存在及其相互之间的矛盾关系,对动脉粥样硬化的认识亦由从形态结构和生化组成等描述病变,发展为在细胞乃至分子基因水平上的深入研究,发现血管平滑肌细胞的增殖和凋亡在动脉粥样硬化形成过程中起重要作用。从哲学角度探讨血管平滑肌细胞在动脉粥样硬化发生中的作用,有助于科学的发现疾病的本质。     

血红素氧合酶-1与动脉粥样硬化和高血压的关系

血红素氧合酶-1（HO-1）是血红素分解的起始酶和限速酶,它分解血红素最终生成胆红素、一氧化碳和铁.这三种产物通过抗炎症损伤、抗氧化应激、抗细胞增殖、抗细胞凋亡、抑制血小板聚集、调节血管张力及细胞内信号传递等途径对心血管系统起着重要的保护作用.研究显示,HO的诱导剂及多种能降低心血管病风险的药物能诱导 HO-1表达增加,从而起到抗动脉粥样硬化的发生发展及调节血压的作用.因此开发临床可应用的HO诱导剂,甚至开发HO的基因治疗方法是目前研究的方向.     

窄谱中波紫外线对银屑病皮损热休克蛋白27、60、90α、90β影响的研究

探讨窄谱中波紫外线(NB-UVB)局部照射治疗银屑病患者前后,对皮损组织HSP27、HSP60、HSP90α、HSP90β表达的影响。采用免疫组化法检测20例银屑病患者皮损区治疗前后及10例正常人皮肤中HSP27、HSP60、HSP90α、HSP90β的表达情况。发现在银屑病皮损中,HSP60、HSP90α、HSP90β表达明显升高,与健康对照组比较,差异有统计学意义(P0.05);NB-UVB治疗后表达降低,与健康对照组比较,差异无统计学意义(P值均0.05)与治疗前比较,差异有统计学意义(P0.05)。在银屑病皮损中,HSP27表达降低,与健康对照组比较,差异有统计学意义(P0.05),NBUVB治疗后表达虽有所升高,但与健康对照组比较,差异仍有统计学意度(P0.05);与治疗前比较,差异有统计学意义(P0.05)。热休克蛋白在银屑病的发病过程中具有重要作用,并且不同的热休克蛋白在银屑病的发生发展中发挥的作用不尽相同。NB-UVB可通过调控热休克蛋白的表达,对银屑病起到有效的治疗作用。     

热休克蛋白与先天性畸形的关系及其哲学思考

从细菌到人类 ,当细胞受到热应激时可激发热休克反应 (Ｈｅａｔｓｈｏｃｋｒｅｓｐｏｎｓｅ) ,也称为应激反应 ,诱导产生一组高度保守、具有重要生理功能的蛋白质分子家族 ,称为热休克蛋白 (Ｈｅａｔｓｈｏｃｋｐｒｏｔｅｉｎｓ ,ＨＳＰｓ) ,已知有 5大ＨＳＰｓ家族 :ＨＳＰ110、ＨＳＰ90、ＨＳＰ70、ＨＳＰ6 0及小分子量ＨＳＰ家族[1] 。1　ＨＳＰｓ干扰胚胎发育先天性畸形是由于胚胎发育紊乱而出现的形态结构异常。大量的体内 /体外实验表明 ,高温等各种致畸原可诱导多种动物发生先天性畸形 ,如神经管未闭、小脑、露脑、小眼等[2 ] 。畸形…     

免疫反应影响动脉粥样硬化进程的两面性

大量研究表明,动脉粥样硬化的发生和发展过程中,能观察到许多免疫反应。然而,免疫反应对动脉粥样硬化的作用却呈现为两面性;免疫系统的激活可加速动脉粥样硬化的形成和发展,也可表现出抗动脉粥样硬化功效。所以,适当的免疫调节干预,有望成为动脉粥样硬化的预防及治疗的新途径。     

慢性心理应激对大鼠淋巴细胞热休克蛋白70表达和凋亡的影响

为了探讨慢性心理应激对热休克蛋白70（Hsp70）、淋巴细胞的凋亡及其两者之间关系的影响,将实验SD大鼠分为对照组、中等强度心理应激组和高强度心理应激组。分别对三组大鼠给予相应的干预3周,采用流式细胞仪定量检测各组大鼠外周血淋巴细胞Hsp70的表达水平和凋亡量。结果发现,与对照组比较,中等和高强度心理应激组淋巴细胞内Hsp70表达水平显著增加;中等强度心理应激组凋亡量增加但没有出现统计学意义,高强度心理应激组淋巴细胞凋亡显著增加;中等强度心理应激组的淋巴细胞Hsp70表达与凋亡量变化成显著正相关,高强度心理应激组两者变化成不显著正相关。研究结果提示心理应激能诱发淋巴细胞Hsp70表达和凋亡升高,且随心理应激强度增加,Hsp70表达升高趋势减缓、凋亡量增加加剧,最终造成机体免疫损伤加深     

Gef?hrliche N?he

The author examines the association between trauma and psychosis. To illustrate this he presents clinical examples of active and passive experiences of violence by adult psychotic patients, for whom forerunners in the form of childhood experiences of violence were found in some psychoanalytical treatments. They take place in traumatic relationships. Recent empirical studies have shown that trauma plays an influential role in the pathogenesis of schizophrenia. Traumatic relationships have a contradictory structure which possesses an impressive similarity to the schizophrenic dilemma of adult psychotics. The author therefore considers the schizophrenic dilemma as an introspective manifestation of a traumatic relationship, a part of the violent nature of psychiatric institutions as re-enactment of the traumatic relationship.     

Horses discriminate between human facial and vocal expressions of sadness and joy

Animal Cognition - Communication of emotions plays a key role in intraspecific social interactions and likely in interspecific interactions. Several studies have shown that animals perceive human...     

情绪对工作记忆影响的研究综述

情绪在我们的生活中扮演着十分重要的角色,各种认知活动都或多或少的受其影响。有关情绪与工作记忆相互作用的研究中,很多的证据表明,情绪对认知表现的影响可能是通过工作记忆完成的。本文对情绪分类,情绪影响工作记忆的相关理论及以往的相关研究进行了介绍,同时提出存在的问题并进行展望。     

Processing focus structure and implicit prosody during reading: differential ERP effects

Several recent studies have shown that focus structural representations influence syntactic processing during reading, while other studies have shown that implicit prosody plays an important role in the understanding of written language. Up until now, the relationship between these two processes has been mostly disregarded. The present study disentangles the roles of focus structure and accent placement in reading by reporting event-related brain potential (ERP) data on the processing of contrastive ellipses. The results reveal a positive-going waveform (350-1300 ms) that correlates with focus structural processing and a negativity (450-650 ms) interpreted as the correlate of implicit prosodic processing. The results suggest that the assignment of focus as well as accent placement are obligatory processes during reading.     

氧化型低密度脂蛋白：致动脉粥样硬化和抗动脉粥样硬化的双重作用

研究证明,氧化型低密度脂蛋白（oxLDL）,而不是低密度脂蛋白,是致动脉粥样硬化的独立危险因素。oxLDL主要通过巨噬细胞上的清道夫受体摄入oxLDL,引起血管壁泡沫细胞的堆积和脂纹的形成;oxLDL还改变了内皮细胞、平滑肌细胞、血小板的多种功能,使之释放多种致炎细胞因子,促进了炎症细胞的趋化和聚集。但最近有报道认为,口服免疫耐量的oxLDL可弱化早期和晚期动脉粥样硬化。因此,oxLDL不仅能导致动脉粥样硬化,在某些情况下,还具有抗动脉粥样硬化的作用。本文从辩证法的角度出发,系统的阐述oxLDL的这一双重作用。     

Effects of the presence of others on prosocial behavior: Perceived face as mediator

Previous studies have shown that the prosocial behavior of individuals may be promoted or inhibited by the presence of others. This study hypothesizes that prosocial behavior relates to the relationships among present individuals, beyond their number. This study examines whether there is a significant difference in an individual's prosocial behavior in the presence of different types of others (strangers or friends) and whether this effect is mediated by the perception of face. Two studies that used different methods of data collection were conducted. It was found that the presence of friends promotes prosocial behavior more than does the presence of strangers. In addition, perceived face plays a mediating role between the presence of different types of people and prosocial behavior.     

节拍化疗——转移性乳腺癌治疗的新选择

肿瘤新生血管生成在肿瘤生长、转移等过程中起着重要作用,抗肿瘤血管治疗被认为是一种很有前途的肿瘤靶向治疗。化疗药物如环磷酰胺、甲氨蝶呤等在长期、低剂量非常规给药方式（节拍化疗）下具有显著的抗肿瘤血管生成能力。节拍化疗有望成为转移性乳腺癌一种全新的治疗模式。     

Problems and possibilities of cross-cultural supervision

Supervision across cultural boundaries has problems and possibilities. Culture plays a role in the teaching, learning, and helping processes. In one international Swiss setting certain observations are noted: (1) The use of one's culture is described as a major defense mechanism; (2) Cultural stereotyping can become a means to avoid engagement; (3) A supposed cultural neutrality encourages cultural confusion which, like role confusion, complicates interpersonal relationships; (4) Some students are intimidated by other cultural groups and unable to recognize or deal with their feelings; (5) Body language and other nonverbal expressions play an important role in cross-cultural counseling and supervision; (6) Culture Shock in its various stages can be indicated as a major stress item and is comparable to grief and shock reactions; (7) The given piety of a culture sometimes means that cultural differences are often greater from one country to another than denominational or religious differences, even within one denominational group.He is a member of the German Society for Pastoral Psychology.