创伤后应激障碍大鼠蓝斑核神经元细胞凋亡的实验研究
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巴曲酶对实验性脑出血大鼠的神经保护作用及其机制研究的开题报告1.研究背景和意义:脑出血是严重的神经系统疾病之一,常常导致残疾和死亡。
脑出血致使病变区域血管破裂,血液外溢到脑实质内,形成血肿造成神经元、胶质细胞和微血管的损伤,并引发炎症反应。
脑出血后神经元坏死、细胞凋亡、胶质增生和神经元周围的水肿等损伤机制使得病情恶化。
因此,如何寻找保护神经元和修复功能的方法成为研究热点。
巴曲酶是来源于麦角中毒蝌蚪上的一种芳香族L-氨基酸酸解酶,具有抗氧化、减轻炎症反应和促进细胞存活的功效。
近年来的研究表明,巴曲酶在控制炎症、抗氧化和抑制细胞凋亡等方面具有重要的作用。
在很多不同类型的的脑损伤初期,巴曲酶的治疗也表现出了一定的保护神经元的作用。
这表明巴曲酶有可能成为治疗脑出血的新策略。
2.研究目的:本研究旨在通过实验室动物模型研究巴曲酶对脑出血大鼠的神经保护作用及其机制,探索巴曲酶在脑出血治疗中的潜力和研究路径。
3.研究方法:(1)动物模型:使用SD大鼠,进行实验前期手术和麻醉管理,切开大鼠头颅,使用缩血管钳或小型注射器向脑内注射血液来建立脑出血大鼠模型。
(2)实验设计:将大鼠分为脑出血组、巴曲酶组、对照组。
每组进行相关药物或生理盐水的处理,先摄取动物的基线指标,然后在实验开始后记录时间尺度内的各个指标,并进行时间比较。
(3)行为测试:在巴曲酶或生理盐水处理后,使用轮转试验、步态试验及神经学评分量表评估大鼠的行为和神经功能。
(4)取样检测:术后特定时间取样,用免疫荧光染色法检测神经元、胶质和血管和炎症细胞的分布情况,同时进行组织切片并用特定染色及分析方法对其进行分析比较。
4.研究意义:本研究旨在探明巴曲酶对脑出血大鼠神经系统的保护作用及作用机制,探索巴曲酶作为治疗脑出血的新策略。
研究结果可能提供新的治疗思路和临床方案,有利于控制脑出血病情,提高患者的生活质量和延长寿命。
HIF-1α及其抑制剂对新生大鼠缺氧缺血性脑损伤时神经细胞凋亡的影响闫焕利;阴怀清;杜洪;范泽卫【摘要】目的探讨缺氧诱导因子-1α(HIF-1α) 及其抑制剂2-甲氧基雌二醇(2ME2)对新生大鼠缺氧缺血性脑损伤时神经细胞凋亡的影响.方法将120只新生7 d龄Wistar大鼠随机分为假手术组(Sham组,n=8)、缺氧缺血模型组(HIBD组,n=56)、2ME2干预组(2ME2组,n=56),后两组采用Rice法建立模型后,根据断头取脑的时间不同又分为3 h、6 h、12 h、24 h、48 h、72 h和7 d7个亚组.应用HE染色观察脑组织的病理变化,免疫组化技术检测HIF-1α、Bax、Bcl-2的表达,TUNEL法计数脑细胞凋亡.结果 HE染色显示2ME2干预后脑组织的损伤减轻;免疫组化显示:HIF-1α在HIBD组于模型制备后3 h升高,12 h达高峰,之后下降,2ME2组表达趋势和HIBD组相同,表达水平显著下降.与HIBD组比较,2ME2组各时间点的Bcl-2表达显著升高,Bax表达显著降低,TUNEL标记的阳性细胞数明显减少.结论在新生大鼠缺氧缺血急性期使用2ME2抑制HIF-1α的表达,引起Bax/ Bcl-2表达量比值降低,凋亡细胞数目减少,改善脑损伤.【期刊名称】《中西医结合心脑血管病杂志》【年(卷),期】2012(010)008【总页数】4页(P977-980)【关键词】缺氧缺血性脑损伤;缺氧诱导因子-1α;2-甲氧基雌二醇;Bax;Bcl-2;细胞凋亡【作者】闫焕利;阴怀清;杜洪;范泽卫【作者单位】山西医科大学,030001;山西医科大学第一医院,030001;山西医科大学第一医院,030001;山西医科大学第一医院,030001【正文语种】中文【中图分类】R651缺氧/缺血性脑损伤(hypoxia-ischemia brain damage,HIBD)是新生儿时期最常见且严重的神经系统损伤,其发病机制至今不明,目前缺乏有效的治疗方法。
蓝斑核-海马TH~+投射在手术切口痛增强记忆巩固中的作用研究摘要:痛觉是影响生物学进程的重要刺激。
这种刺激可能产生对相关记忆的加深,从而助力于记忆存储和加强。
海马和蓝斑核被认为是相关的结构,可参与痛觉加强记忆存储和巩固。
本研究探究了在手术切口痛与非痛刺激下,蓝斑核-海马TH~+投射的加强记忆巩固中的作用。
通过微电极在大鼠蓝斑核和海马区域内电刺激,记录了单个蓝斑核-海马TH~+投射神经元的活动。
在渐进的学习任务中,将大鼠随机分为两组,其中一组通过电刺激的方式在手术切口处产生痛觉,另一组则没有。
结果表明,手术切口痛刺激增强了蓝斑核-海马TH~+投射神经元的放电活动。
同时,手术切口痛刺激组表现出更好的学习和记忆存储表现。
进一步分析表明,TH~+神经元的放电和学习的记忆改变是有关联的,手术切口痛刺激能够增加这种关联性并巩固相关记忆。
这些结果强调了蓝斑核-海马TH~+投射对于痛刺激加强学习和记忆巩固的作用,以及痛觉对这些神经元活动的影响。
这些结论有望为进一步了解疼痛对记忆和认知的影响提供新的途径。
关键词:蓝斑核,海马,痛觉,记忆,巩固。
Abstract: Pain is an important stimulus that affects biological processes. This stimulation may enhancerelated memories, thus aiding memory storage and strengthening. The hippocampus and locus coeruleus are considered to be related structures that can participate in pain-enhanced memory storage and consolidation. This study explores the role of the Locus Coeruleus-Dentate Gyrus Theta Plus (LC-TH~+) projection in enhancing memory consolidation under surgical incision pain and non-pain stimuli.The activity of individual LC-TH~+ projection neurons was recorded by microelectrodes in the rat locus coeruleus and dentate gyrus. In progressive learning tasks, rats were randomized into two groups, one of which produced pain at the surgical incision site through electrical stimulation, while the other did not. The results showed that surgical incision pain stimulation enhanced the discharge activity of LC-TH~+ projection neurons. At the same time, the surgical incision pain group demonstrated better learning and memory storage performance. Further analysis showed that the discharge of TH~+ neurons and changes in learning and memory were correlated. Surgical incision pain stimulation can increase this correlation and consolidate related memories.These results emphasize the role of the LC-TH~+ projection in pain-enhanced learning and memoryconsolidation, as well as the effect of pain on the activity of these neurons. These conclusions are expected to provide a new avenue for further understanding the effects of pain on memory and cognition.Keywords: Locus coeruleus, hippocampus, pain, memory, consolidationOverall, this study provides new insights into the relationship between pain, the LC-TH~+ projection, and memory consolidation. The findings suggest that pain can enhance the consolidation of related memories by increasing the activity of LC-TH~+ neurons, which project to the hippocampus.These results have important implications for our understanding of the effects of pain on cognitive function. In particular, they suggest that pain can have both negative and positive effects on memory, depending on the context. While acute pain may impair memory performance, chronic pain may enhance memory consolidation for related events.Future research in this area may focus on exploring the mechanisms underlying these effects, as well as investigating the potential therapeutic applicationsof pain-induced memory enhancement. For example, it may be possible to develop interventions that target the LC-TH~+ projection as a way of enhancing memory consolidation in individuals with impaired cognitive function.In conclusion, the findings of this study highlight the importance of considering the effects of pain on cognitive function, and provide a foundation for further research in this area. With continued investigation, we may gain a better understanding of the complex interactions between pain and memory, and develop novel approaches to improving cognitive outcomes in pain patientsIn addition to the potential application of TH~+ projection in enhancing memory consolidation in individuals with impaired cognitive function, there are other promising techniques that may offer benefits to this population.One such technique is transcranial magneticstimulation (TMS), a non-invasive form of brain stimulation that has shown promise in improving cognitive function in older adults and individuals with mild cognitive impairment. TMS works by using magnetic fields to stimulate specific areas of thebrain, which can enhance neural activity and improve cognitive performance.Another technique that has shown promise is cognitive training, which involves exercises designed to improve specific cognitive abilities such as memory, attention, and reasoning. Cognitive training can be tailored to individual needs and has been shown to improvecognitive function in older adults and individualswith cognitive impairment.Finally, lifestyle interventions such as exercise and diet may also offer benefits to individuals with impaired cognitive function. Exercise has been shownto improve cognitive function by enhancing blood flow to the brain, promoting the growth of new brain cells, and reducing inflammation. Similarly, diet can play a role in cognitive function by providing the nutrients necessary for healthy brain function.Overall, while TH~+ projection shows promise as a technique for enhancing memory consolidation in individuals with impaired cognitive function, thereare other techniques that may offer benefits as well. With continued research in this area, we may be ableto develop a range of interventions that can helpindividuals with impaired cognitive function livefuller and more fulfilling livesOne potential technique for enhancing cognitivefunction is through cognitive training programs. These programs are designed to improve cognitive skills such as memory, attention, and executive function through various exercises and activities. Research has found that cognitive training programs can be effective in improving cognitive function in older adults and individuals with mild cognitive impairment.Another potential technique is through the use of medications. There are a variety of medications available that can improve cognitive function, particularly in individuals with Alzheimer's diseaseor other forms of dementia. These medications work by increasing the levels of neurotransmitters in the brain, improving neural connectivity and communication.In addition to these techniques, lifestyle factors can also play a role in cognitive function. Regular exercise has been shown to improve cognitive function, particularly in older adults. A healthy diet that includes a variety of nutrients necessary for brain function, such as omega-3 fatty acids and B vitamins, can also be beneficial for cognitive health. Adequatesleep is also important for cognitive function, as it allows the brain to consolidate memories and recharge.Overall, there are many techniques that can be used to enhance cognitive function. While some techniques may be more effective than others depending on the individual and their specific needs, continued research in this area is necessary to developeffective interventions for individuals with impaired cognitive function. By incorporating a variety of techniques, individuals can work to improve their cognitive function and maintain a healthy brain throughout their livesIn conclusion, enhancing cognitive function is important for individuals of all ages. Various techniques such as cognitive training, physical exercise, mindfulness, social engagement, and healthy lifestyle habits can help improve cognitive function. It is important to find the techniques that work best for each individual and incorporate them into their daily routine. Continued research is necessary to develop more effective interventions for individuals with impaired cognitive function. By adopting and maintaining healthy brain habits, individuals can improve their cognitive function and maintaincognitive health throughout their lives。
.综述.创伤后应激障碍诊治研究进展伍芳慧,刘媛陆军军医大学大坪医院野战外科研究部特殊环境战伤防治研究室,创伤、烧伤与复合伤国家重点实验室,重庆400042【摘要】创伤后应激障碍指个体在遭受强烈的身体和精神创伤后出现行为和精神异常的一种疾病。
其三大核心症状为:创伤事件再体验、警觉性增高以及回避、麻木。
本文对创伤后应激障碍(PTSD)的概况、流行病学、致病机制、生物标记物及其预警诊断、防治措施等方面的研究进行综述,并提出相关研究中存在的问题及未来的研究方向。
【关键词】创伤后应激障碍;发病机制;早期诊断;治疗【中图分类号】R395【文献标识码】A[DOI】10.3969/j.issn.1009-4237.2021.06.016Progress of diagnosis and treatment of post-traumatic stress disorderWu FanghuijLiu YuanState Key Laboratory of Trauma,Bums and Combined Injury,Department of Special War Wound,Research Institute of Surgery,Daping Hospital,Army Medical University,Chongqing400042,China[Abstract]Post-traumatic stress disorder(PTSD)is a disease,which is caused by intense physical and mental trauma and eventually develops behavioral and mental abnormalities.The three key symptoms of PTSD arereexperience of traumatic events,increased alertness,and avoidance or numbness.This paper makes a comprehensive review of PTSD and its progress in epidemiology, pathogenic mechanism,biomarkers,predicting diagnosis andprevention measures.Further,the existing problems in current researches and the direction in the future are discussed.[Key words]post-traumatic stress disorder;pathogenesis;early diagnosis;treatment创伤后应激障碍(posttraumatic stress disorder,PTSD)是指机体在遭受战场环境、自然灾害、意外事故、严重创伤等突如其来且超乎寻常的威胁性、灾难性事件后引发的一组以多种精神行为异常和心理障碍为主,并对个体产生明显的影响,致使其职业能力和社会功能受损的延迟和(或)持久的不良反应[I-3]o其临床的核心表现为创伤事件再体验、持续的警觉性增高以及情感麻木及回避行为。
energy homeostasis.The nuclear receptors regulate target gene expression through the recruitment of coregulatory proteins,which act as scaffolds or plateforms for linking NRs with enzyme complexes that modify DNA and histones.As a transcriptional co⁃repressor for NRs,RIP140negatively regulates the transcrip⁃tion of target gene in metabolic tissue,such as adipose tissue,muscle and liver.In the absence of RIP140,genes expressions involved in metabolic pathways were upregulated including gly⁃colysis,triglyceride synthesis,TCA cycle,fatty acidβoxidation,mitochondrial electron transport and oxidative phosphorylation. RIP140may be a candidate therapeutic target for metabolism syndromes.Key words:RIP140;PGC⁃1α;energy metabolism;nuclear re⁃ceptor;transcriptional co⁃repression;histone deacetylase;gene knockout创伤后应激障碍的神经生物学研究进展张黎明,张有志,李云峰(军事医学科学院毒物药物研究所,北京 100850)中国图书分类号:R⁃05;R749.720.23文献标识码:A文章编号:1001-1978(2010)06-0704-04摘要:创伤后应激障碍(PTSD)是当机体遭受生命威胁或者强烈精神创伤后发生的精神疾病。
《丁苯酞预处理对脑缺血再灌注损伤大鼠的神经保护作用及机制研究》篇一一、引言脑缺血再灌注损伤是临床常见的神经系统疾病,其病理机制复杂,涉及多种细胞因子和信号通路的相互作用。
丁苯酞作为一种具有广泛药理活性的化合物,近年来在神经保护领域备受关注。
本研究旨在探讨丁苯酞预处理对脑缺血再灌注损伤大鼠的神经保护作用及其潜在机制。
二、材料与方法1. 实验动物与分组实验选用健康成年SD大鼠,随机分为假手术组、模型组、丁苯酞预处理组和对照组。
2. 脑缺血再灌注模型建立采用线栓法建立大鼠脑缺血再灌注模型。
3. 丁苯酞预处理及给药方式在模型建立前,丁苯酞预处理组大鼠接受丁苯酞预处理。
4. 神经功能评分及指标检测通过观察大鼠的神经功能评分、脑组织病理学检查、神经元凋亡检测等指标,评估各组大鼠的神经功能恢复情况。
5. 实验设计与统计学分析实验设计遵循随机、对照、重复的原则,数据采用SPSS软件进行统计分析。
三、实验结果1. 神经功能评分丁苯酞预处理组大鼠的神经功能评分明显低于模型组,提示丁苯酞预处理能够显著改善大鼠的神经功能。
2. 脑组织病理学检查丁苯酞预处理组大鼠的脑组织病理学改变较模型组轻微,提示丁苯酞预处理对脑组织具有保护作用。
3. 神经元凋亡检测丁苯酞预处理组大鼠的神经元凋亡率较低,表明丁苯酞预处理能够抑制神经元凋亡。
4. 机制研究通过检测相关信号通路及细胞因子的表达,发现丁苯酞预处理可能通过抑制炎症反应、抗氧化、调节细胞凋亡等途径发挥神经保护作用。
四、讨论本研究结果表明,丁苯酞预处理能够显著改善脑缺血再灌注损伤大鼠的神经功能,减轻脑组织病理学改变,抑制神经元凋亡。
机制方面,丁苯酞可能通过抑制炎症反应、抗氧化、调节细胞凋亡等途径发挥神经保护作用。
这些发现为丁苯酞在神经保护领域的应用提供了理论依据。
然而,本研究仍存在一定局限性。
首先,实验样本量较小,可能影响结果的稳定性。
其次,实验未对丁苯酞的最佳预处理时间及剂量进行深入探讨。
综述针刺治疗PTSD神经生物学研究进展宋凯张虹熊凡捷黄爱玲(成都中医药大学针灸推拿学院,成都,612000)摘要近年来,随着经济社会的快速发展与社会关系的复杂化和多元化,诸如自然灾害、暴力犯罪、性侵害等创伤性事件频频发生,创伤后应激障碍(PTSD)的关注度正在逐年上升,如何防治PTSD成为重要的研究课题。
针灸作为我国传统医学的瑰宝,在精神疾病的预防和治疗方面有着丰富的经验和独特的优势,临床研究证实,针刺能有效改善PTSD的相关症状,然而其神经生物学机制到底为何,至今仍无定论。
基于此,本文综述了近些年发表的相关研究,企图初步揭示针刺治疗PTSD內在的神经生物学机制,为临床治疗提供参考。
关键词针刺;穴位;治疗;创伤后应激障碍;神经生物学;神经元;机制;研究Reseerch Advances of Acapuncturr in Neerrbiology Therrpy for Post-Trrumatia Stress DisorderSONG Kai,ZHANG Hong,XIONG F/jie,HUANG Ailing(DeparOneai yf Acpunchuo and Tuino,CCengdu Univer s py f TCM《Chengdu010002,CCina')Abstrrct In recent years;with the rapid development of the economy and society and the complexity and diversification of social a/tions,traumatic events such as natural disasters,ciolent crimes and sexual assaults have frequen/y occyraP.Atten/on to post-tradma/c stress disorder(PTSD)is increasing year by year.How to prevent PTSD becomes an i/pormnt research topic.As a treasure of traPi/onai Chinese medicine;acypunctua has rich expeaence and unipue advantages in the preven/on and treatment of mental diseases.Clinical studies have confirmed that acypunctua can ePec/vely i/prove the symptoms re/wd to PTSD, but its inarnai mechanism W still unclear.Based on this,this paper reviewed relevant stubies pub/sheX in recent years,in an attempt to preli/ina-aiy reveal the intrinsic neqabio/gicai mechanism of acypunctua treatment for PTSD and provide reference for clinical treatment. Keawords Acypunctua;AcypoWts;Treatment;PTSD;Neprobiology;Nexrons;Mechanism;Research中图分类号:R245文献标识码:A doi:14.3767/j.Ww/1073-7227.2020.24.234创伤后应激障碍(Post-traumatic Stress Disordar, PTSD)是一种使人衰弱的精神障碍,通常暴露于诸如人为灾害、机动车事故、儿童虐待等创伤性接触事件[-]o流行病学研究显示,世界上一半以上的人口经历过创伤事件,PTSD的终生患病率和平均患病率分别为4.3%和6%[4]o在我国,由于近些年灾害性事件频发,PTSD发病率也呈上升趋势,如1093年张北地震受灾人群9个月后PTSD发病率为24.4%o 2226年四川7.10地震后PTSD发生率高达37.3%[5]o精神疾病的诊断和统计手册第四版(DSM-IC)把创伤后应激障碍的特征定义为重新体验创伤记忆,回避创伤提醒,以及普遍的过度兴奋⑷。