• 文章类型: Journal Article
    中风后中枢疼痛(CPSP)的康复是一项复杂的临床挑战,重复经颅磁刺激(rTMS)已广泛应用于脑卒中后神经功能恢复的研究。然而,目前尚无可靠的循证医学支持rTMS治疗中风后中枢性疼痛的疗效.本综述旨在评估rTMS对中央性卒中后疼痛的影响。
    遵循PRISMA准则,我们在PubMed上进行了搜索,科克伦图书馆,Embase,WebofScience,CNKI,万方数据知识服务平台。我们搜索了随机对照试验(RCTs),研究rTMS在治疗中枢中风后疼痛中的应用,并根据纳入和排除标准进行筛查。提取所包括的RCT的特征。使用I2统计量评估试验的异质性。采用Stata17软件进行Meta分析。使用CochraneRoB2工具和Pedro量表评估偏倚风险和方法学质量。
    共有6项随机对照试验涉及288例患者符合我们的纳入标准。在我们的分析中,与安慰剂组相比,rTMS治疗CPSP患者更有效(SMD=-1.15,95%CI:-1.69,-0.61,P<0.001)。此外,亚组分析结果显示,rTMS与常规治疗相比,超过6个月的疼痛改善无统计学差异(SMD=-0.80,95%CI:-1.63,0.03,P=0.059).
    TMS可以减轻CPSP患者的疼痛并改善其运动功能,但是它对抑郁症的影响,焦虑,和MEP延迟不显著。
    https://www.crd.约克。AC.英国/普华永道/,CRD42024497530。
    UNASSIGNED: The rehabilitation of central post-stroke pain (CPSP) is a complex clinical challenge, and repetitive transcranial magnetic stimulation (rTMS) has been widely applied in the research of neurofunctional recovery following stroke. However, there is currently no reliable evidence-based medicine supporting the efficacy of rTMS in central post-stroke pain. This review aims to evaluate the effects of rTMS on central post-stroke pain.
    UNASSIGNED: Following the PRISMA guidelines, we conducted searches on PubMed, Cochrane Library, Embase, Web of Science, CNKI, and Wan Fang Data Knowledge Service Platform. We searched for randomized controlled trials (RCTs) investigating the use of rTMS in treating central post-stroke pain, and conducted screening based on inclusion and exclusion criteria. Characteristics of the included RCTs were extracted. The heterogeneity of the trials was assessed using the I2 statistic. Meta-analysis was performed using Stata 17 software. Bias risk and methodological quality were evaluated using the Cochrane RoB 2 tool and the Pedro scale.
    UNASSIGNED: A total of six randomized controlled trials involving 288 patients met our inclusion criteria. In our analysis, rTMS was more effective in treating patients with CPSP compared to the placebo group (SMD=-1.15, 95% CI: -1.69, -0.61, P < 0.001). Furthermore, results from subgroup analysis indicated no statistically significant difference in the improvement of pain for durations exceeding 6 months when comparing rTMS to conventional treatment (SMD=-0.80, 95% CI: -1.63, 0.03, P = 0.059).
    UNASSIGNED: TMS can alleviate pain in CPSP patients and improve their motor function, but its effects on depression, anxiety, and MEP-latency are not significant.
    UNASSIGNED: https://www.crd.york.ac.uk/prospero/, CRD42024497530.
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  • 文章类型: Journal Article
    加强语言治疗仍然是改善中风后失语症的最有效策略,然而,传统的面对面干预往往缺乏必要的治疗强度。近年来,基于移动应用的言语语言治疗逐渐出现,为失语症患者提供独立康复的新机会。这篇综述旨在评估基于移动应用的干预措施对卒中后失语症的影响。
    通过对五个数据库(PubMed,WebofScience,EMBASE,CINAHL,和Scopus),我们确定并纳入了调查基于移动应用程序的技术(如计算机,iPad,等。)用于治疗中风后失语症。
    这项研究包括15项研究调查,包括10项随机对照试验(RCT),四项自身对照研究和一项交叉实验设计研究。其中,8项研究证明了基于移动应用的治疗在增强卒中后失语症患者的整体语言功能方面的功效,三项研究强调了其提高沟通技巧的潜力,三项研究观察到其对自发言语表达的积极影响。此外,四项研究表明其在增强命名能力方面的有效性,两项研究强调了基于移动应用的干预措施对失语症患者生活质量的积极影响.六项研究指出,在随访期间保持了言语改善效果。
    本综述的结果表明,基于移动应用程序的干预措施在改善失语症患者的语音-语言功能方面具有潜力。然而,需要进一步的高质量研究来确定它们在不同领域的影响,并深入研究各种治疗方法的相对优势。
    https://www.crd.约克。AC.uk/prospro/display_record.php?RecordID=405248。
    UNASSIGNED: Enhancing speech-language therapy remains the most effective strategy for improving post-stroke aphasia, However, conventional face-to-face interventions often lack the necessary therapeutic intensity. In recent years, mobile application-based speech-language therapy has emerged progressively, offering new opportunities for independent rehabilitation among aphasic patients. This review aims to evaluate the impact of mobile application-based interventions on post-stroke aphasic.
    UNASSIGNED: By conducting a systematic search across five databases (PubMed, Web of Science, EMBASE, CINAHL, and Scopus), we identified and included studies that investigated the utilization of mobile application-based technologies (such as computers, iPads, etc.) for treating post-stroke aphasia.
    UNASSIGNED: This study included 15 research investigations, including 10 randomized controlled trials (RCTs), four self-controlled studies and one cross-over experimental design study. Among these, eight studies demonstrated the efficacy of mobile application-based therapy in enhancing overall language functionality for post-stroke aphasia patients, three studies highlighted its potential for improving communication skills, three studies observed its positive impact on spontaneous speech expression. Moreover, four studies indicated its effectiveness in enhancing naming abilities, two studies underscored the positive influence of mobile application-based interventions on the quality of life for individuals with aphasia. Six studies noted that speech improvement effects were maintained during the follow-up period.
    UNASSIGNED: The results of this review demonstrate the potential of mobile application-based interventions for improving speech-language function in individuals with aphasia. However, further high-quality research is needed to establish their effects across different domains and to delve into the comparative advantages of various treatment approaches.
    UNASSIGNED: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=405248.
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  • 文章类型: Journal Article
    这篇综述旨在评估不同运动剂量对卒中后认知障碍(PSCI)个体认知功能的影响。
    四个电子数据库-Embase,PubMed,WebofScience,和Cochrane图书馆-从开始到2024年1月1日进行了系统搜索,重点是运动疗法对PSCI患者认知功能的影响。仅纳入符合标准的随机对照试验。根据美国运动医学学院(ACSM)指南评估运动治疗剂量和依从性。分为符合ACSM建议的高依从性组和低依从性或不确定依从性组。随机效应模型比较了ACSM依从性对PSCI患者认知功能的影响,效应大小由标准化平均差(SMD)和95%置信区间(CI)表示。
    总共,纳入了18项符合标准的研究,来自1742名参与者的数据。研究结果表明,运动对PSCI患者的认知功能有益[SMD=0.42,95%CI(0.20,0.65)]。根据ACSM建议,10项研究被归类为“高依从性组”,8项被归类为“低或不确定依从性组”。亚组分析显示,高依从性组的SMD为0.46(95%CI:0.10,0.82)(p=0.01),而低或不确定依从性组的SMD为0.38(95%CI:0.07,0.70)(p=0.02)。
    我们的研究表明,与不运动相比,运动对PSCI患者的有益影响。此外,与PSCI患者的低依从性或不确定依从性相比,对ACSM指南推荐的运动剂量的高依从性表现出更显著的认知功能改善.系统审查注册:https://www。crd.约克。AC.uk/prospro/#myprospro,标识符CRD42023487915。
    UNASSIGNED: This review aimed to assess the impact of different exercise dosages on cognitive function in individuals with post-stroke cognitive impairment (PSCI).
    UNASSIGNED: Four electronic databases-Embase, PubMed, Web of Science, and Cochrane Library-were systematically searched from inception to 01 January 2024, focusing on the impact of exercise therapy on cognitive function in individuals with PSCI. Only randomized controlled trials meeting the criteria were included. The exercise therapy dose and adherence were evaluated following the American College of Sports Medicine (ACSM) guidelines, categorized into a high compliance group with ACSM recommendations and a low or uncertain compliance group. A random-effects model compared the effect of ACSM compliance on cognitive function in individuals with PSCI, with the effect size represented by the standardized mean difference (SMD) and a 95% confidence interval (CI).
    UNASSIGNED: In total, 18 studies meeting the criteria were included, with data from 1,742 participants. The findings suggested a beneficial effect of exercise on cognitive function in individuals with PSCI [SMD = 0.42, 95% CI (0.20, 0.65)]. Ten studies were categorized as the \"high adherence group\" and eight in the \"low or uncertain adherence group\" based on the ACSM recommendations. The subgroup analysis revealed that the SMD of the high compliance group was 0.46 (95% CI: 0.10, 0.82) (p = 0.01), while the SMD of the low or uncertain compliance group was 0.38 (95% CI: 0.07, 0.70) (p = 0.02).
    UNASSIGNED: Our study indicates the beneficial impact of exercise for patients with PSCI over no exercise. Furthermore, high adherence to the exercise dose recommended by ACSM guidelines demonstrated a more substantial improvement in cognitive function than low or uncertain adherence in patients with PSCI. Systematic Review Registration: https:// www.crd.york.ac.uk/prospero/#myprospero, identifier CRD42023487915.
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  • 文章类型: Journal Article
    背景:家庭康复系统很有前途,中风幸存者常规治疗的潜在替代方法。不幸的是,参与者之间的生理差异和可穿戴传感器中的传感器位移对分类器性能构成了重大挑战,特别是对于反复进行试验时可能遇到困难的卒中患者.这使得创建能够准确分类手势的可靠的家庭康复系统具有挑战性。
    方法:20名中风患者进行了7种不同的手势(质量屈曲,质量扩展,手腕屈指,手腕背屈,前臂旋前,前臂旋回,和休息)与日常生活活动有关。他们在前臂上戴着EMG传感器时做出了这些手势,以及FMG传感器和手腕上的IMU。我们开发了一个基于原型网络的一次性迁移学习模型,K-Best特征选择,并增加窗口大小以提高模型精度。我们的模型与传统的神经网络迁移学习进行了评估,以及与主题相关和与主题无关的分类器:神经网络,LGBM,LDA,和SVM。
    结果:我们提出的模型实现了82.2%的手势分类准确率,(P<0.05)优于神经网络的一次性迁移学习(63.17%),神经网络(59.72%),LGBM(65.09%),LDA(63.35%),和SVM(54.5%)。此外,我们的模型与主题相关分类器的性能相似,略低于SVM(83.84%),但高于神经网络(81.62%),LGBM(80.79%),和LDA(74.89%)。使用K-Best特征提高了用于评估的6个分类器中的3个的准确性,而不影响其他分类器的准确性。增加窗口大小使所有分类器的准确度平均提高了4.28%。
    结论:我们提出的模型显示,与传统迁移学习相比,中风患者的手势识别准确性有了显著提高。神经网络和传统的机器学习方法。此外,K-Best特征选择和增加的窗口大小可以进一步提高精度。这种方法可以帮助减轻生理差异的影响,并为中风幸存者创建独立于受试者的模型,从而提高可穿戴传感器的分类精度。
    背景:该研究于2018/08/04在中国临床试验注册中心注册,注册号为CHiCTR1800017568。
    BACKGROUND: In-home rehabilitation systems are a promising, potential alternative to conventional therapy for stroke survivors. Unfortunately, physiological differences between participants and sensor displacement in wearable sensors pose a significant challenge to classifier performance, particularly for people with stroke who may encounter difficulties repeatedly performing trials. This makes it challenging to create reliable in-home rehabilitation systems that can accurately classify gestures.
    METHODS: Twenty individuals who suffered a stroke performed seven different gestures (mass flexion, mass extension, wrist volar flexion, wrist dorsiflexion, forearm pronation, forearm supination, and rest) related to activities of daily living. They performed these gestures while wearing EMG sensors on the forearm, as well as FMG sensors and an IMU on the wrist. We developed a model based on prototypical networks for one-shot transfer learning, K-Best feature selection, and increased window size to improve model accuracy. Our model was evaluated against conventional transfer learning with neural networks, as well as subject-dependent and subject-independent classifiers: neural networks, LGBM, LDA, and SVM.
    RESULTS: Our proposed model achieved 82.2% hand-gesture classification accuracy, which was better (P<0.05) than one-shot transfer learning with neural networks (63.17%), neural networks (59.72%), LGBM (65.09%), LDA (63.35%), and SVM (54.5%). In addition, our model performed similarly to subject-dependent classifiers, slightly lower than SVM (83.84%) but higher than neural networks (81.62%), LGBM (80.79%), and LDA (74.89%). Using K-Best features improved the accuracy in 3 of the 6 classifiers used for evaluation, while not affecting the accuracy in the other classifiers. Increasing the window size improved the accuracy of all the classifiers by an average of 4.28%.
    CONCLUSIONS: Our proposed model showed significant improvements in hand-gesture recognition accuracy in individuals who have had a stroke as compared with conventional transfer learning, neural networks and traditional machine learning approaches. In addition, K-Best feature selection and increased window size can further improve the accuracy. This approach could help to alleviate the impact of physiological differences and create a subject-independent model for stroke survivors that improves the classification accuracy of wearable sensors.
    BACKGROUND: The study was registered in Chinese Clinical Trial Registry with registration number CHiCTR1800017568 in 2018/08/04.
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  • 文章类型: Journal Article
    背景:本研究旨在探讨艾灸能否通过PI3K/Akt通路调节转化酸性卷曲螺旋蛋白3(TACC3),促进轴突再生,改善大脑中动脉闭塞(MCAO)大鼠的学习记忆功能。
    方法:60只SD大鼠随机分为4组:假手术对照组,模型对照组(MC),模型+艾灸组(MM),模型+抑制剂+艾灸组(MIM组)。MC中的老鼠,MM,MIM组被制成MCAO模型,MIM组大鼠在造模前注射PI3K抑制剂LY294002;SC组大鼠仅动脉分离,不插入单丝。之后,对MM和MIM组大鼠进行艾灸干预。我们使用了Zea-Longa量表,显微磁共振成像(micro-MRI),莫里斯水迷宫(MWM),TUNEL,蛋白质印迹(WB),免疫荧光和免疫组织化学来评估神经功能缺损,脑梗死体积,学习和记忆,海马中凋亡细胞百分比,轴突再生和PI3K/AKt相关蛋白的表达水平,TACC3的表达水平。术后2h检测结果为艾灸前,干预后7d检测结果为艾灸后。
    结果:经过7天的干预,Zea-Longa评分和脑梗死体积,逃避延迟,MM组的凋亡细胞百分比低于MC和MIM组;大鼠的频率越过先前的平台位置,PI3K,MM组p-Akt/t-Akt和TACC3、GAP-43水平高于MC和MIM组(P<0.05)。MIM组与MC组之间无统计学差异(P>0.05)。
    结论:艾灸可通过激活PI3K/AKT信号通路和TACC3促进脑卒中后认知功能障碍轴突再生,改善学习记忆。
    BACKGROUND: This study aimed to investigate whether moxibustion could affect PI3K/Akt pathway to regulate Transforming acidic coiled-coil containing protein 3 (TACC3) and promote axonal regeneration to improve learning and memory function in middle cerebral artery occlusion (MCAO) rats.
    METHODS: Sixty SD rats were randomly divided into 4 groups: sham-operated control group (SC), model control group (MC), model + moxibustion group (MM), and model + inhibitor + moxibustion group (MIM). The rats in MC, MM, and MIM groups were made into MCAO models, and PI3K inhibitor LY294002 was injected into the rats in MIM group before modeling; while the rats in SC group were only treated with artery separation without monofilament inserting. After that, the rats in MM and MIM groups were intervented with moxibustion. We used the Zea-Longa scale, micro-Magnetic Resonance Imaging (micro-MRI), Morris water maze (MWM), TUNEL, western blot (WB), immunofluorescence and immunohistochemistry to evaluate the neurological deficits, cerebral infarct volume, learning and memory, apoptotic cell percentage in the hippocampal, the expression level of axonal regeneration and PI3K/AKt related proteins, the expression level of TACC3. The detection of 2 h after surgery showed the result before moxibustion and 7 days after the intervention showed the results after moxibustion.
    RESULTS: After 7 d of intervention, the scores of Zea-Longa and the cerebral infarct volume, the escape latency, the percentage of apoptosis cells of MM group were lower than that of MC and MIM groups; the frequency of rats crossed the previous platform location, PI3K, p-Akt/t-Akt and TACC3, the level of GAP-43 in MM group was more than MC and MIM groups (P < 0.05). While no statistical difference existed between MIM group and MC group (P > 0.05).
    CONCLUSIONS: Moxibustion can promote axonal regeneration and improve learning and memory of Post-stroke cognitive impairment via activating the PI3K/AKT signaling pathway and TACC3.
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  • 文章类型: Journal Article
    卒中后认知障碍(PSCI)是卒中的主要后果,严重影响患者的生活质量和生存率。出于这个原因,在卒中急性期早期识别和干预高危人群尤为重要.目前,没有可靠有效的早期诊断技术,适当的评估,或PSCI的预测。相反,近年来,许多卒中患者的生物标志物逐渐与认知损害相关.产生大量数据并将其处理为高质量的高通量组学技术已用于筛选和鉴定PSCI的生物标志物,以研究疾病的分子机制。这些技术包括代谢组学,探索有机体的动态变化,肠道微生物,研究宿主-微生物相互作用,基因组学,阐明了更深层次的疾病机制,转录组学和蛋白质组学,描述基因表达和调控。我们浏览了像PubMed这样的电子数据库,Cochrane图书馆,Embase,WebofScience,和每个组学的通用数据库,以寻找可能与PSCI病理生理学相关的生物标志物。作为所有人,我们发现了34项研究:14项在代谢组学领域,5在肠道微生物领域,5在基因组学领域,4在转录组学领域,和7在蛋白质组学领域。我们发现神经炎症,氧化应激,动脉粥样硬化可能是PSCI发展的主要原因,代谢组学可能在PSCI的分子机制中发挥作用。在这项研究中,我们总结了组学技术中存在的问题,并讨论了在组学背景下PSCI生物标志物的最新发现,目的是研究卒中后认知障碍的分子原因。我们还讨论了PSCI机制的组学平台的潜在治疗效用,诊断,和干预措施,以促进该地区向精准PSCI治疗的发展。
    Post-stroke cognitive impairment (PSCI) is a major stroke consequence that has a severe impact on patients\' quality of life and survival rate. For this reason, it is especially crucial to identify and intervene early in high-risk groups during the acute phase of stroke. Currently, there are no reliable and efficient techniques for the early diagnosis, appropriate evaluation, or prognostication of PSCI. Instead, plenty of biomarkers in stroke patients have progressively been linked to cognitive impairment in recent years. High-throughput omics techniques that generate large amounts of data and process it to a high quality have been used to screen and identify biomarkers of PSCI in order to investigate the molecular mechanisms of the disease. These techniques include metabolomics, which explores dynamic changes in the organism, gut microbiomics, which studies host-microbe interactions, genomics, which elucidates deeper disease mechanisms, transcriptomics and proteomics, which describe gene expression and regulation. We looked through electronic databases like PubMed, the Cochrane Library, Embase, Web of Science, and common databases for each omics to find biomarkers that might be connected to the pathophysiology of PSCI. As all, we found 34 studies: 14 in the field of metabolomics, 5 in the field of gut microbiomics, 5 in the field of genomics, 4 in the field of transcriptomics, and 7 in the field of proteomics. We discovered that neuroinflammation, oxidative stress, and atherosclerosis may be the primary causes of PSCI development, and that metabolomics may play a role in the molecular mechanisms of PSCI. In this study, we summarized the existing issues across omics technologies and discuss the latest discoveries of PSCI biomarkers in the context of omics, with the goal of investigating the molecular causes of post-stroke cognitive impairment. We also discuss the potential therapeutic utility of omics platforms for PSCI mechanisms, diagnosis, and intervention in order to promote the area\'s advancement towards precision PSCI treatment.
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  • 文章类型: Journal Article
    中央中风后疼痛(CPSP)显着干扰中风患者的生活质量和心理健康。非侵入性脑刺激(NIBS)作为一种治疗CPSP患者的新兴方法已引起广泛关注。
    为了比较无创性脑刺激对疼痛的临床疗效,采用meta分析对脑卒中后中枢性疼痛患者的心理状况进行研究。
    对多个数据库进行了计算机搜索,以鉴定涉及NIBS主导的CPSP患者治疗的随机对照试验。两名研究人员独立从事文献筛选工作,数据提取,和质量评估。从数据库开始到2023年10月进行研究。采用RevMan5.0和Stata15.0软件进行统计学分析。
    最终收录了807名患者的16篇论文。结果显示NIBS降低了患者的疼痛强度[SMD=-0.39,95%CI(-0.54,-0.24),p<0.01],在短期CPSP患者中更有效。然而,纳入的研究未显示对心理状况有显著影响,尤其是抑郁症。亚组分析表明M1刺激点比其他刺激点更有效[SMD=-0.45,95%CI(-0.65,-0.25),p<0.001]。与rTMS相比,其他刺激方式也显示出有利的结果[SMD=-0.67,95%CI(-1.09,-0.25),p<0.01]。
    NIBS对CPSP患者疼痛缓解有积极影响,但并不能增强患者在焦虑或抑郁方面的心理健康。此外,大样本,高品质,需要多中心随机对照试验来探索不同刺激持续时间和参数对CPSP患者的益处。本研究已在Prospero注册,注册号为CRD42023468419。
    UNASSIGNED: Central post-stroke pain (CPSP) significantly interferes with the quality of life and psychological well-being of stroke patients. Non-invasive brain stimulation (NIBS) has attracted significant attention as an emerging method for treating patients with CPSP.
    UNASSIGNED: To compare the clinical efficacy of noninvasive brain stimulation on pain, and psychological status of patients with central post-stroke pain using meta-analysis.
    UNASSIGNED: A computerized search of multiple databases was performed for identification of randomized controlled trials involving NIBS-led treatment of CPSP patients. Two researchers worked independently on literature screening, data extraction, and quality assessment. Research was conducted from inception of the database until October 2023. RevMan 5.0 and Stata 15.0 software were used to conduct statistical analysis.
    UNASSIGNED: Sixteen papers with 807 patients were finally included. The results showed that NIBS reduced patients\' pain intensity [SMD = -0.39, 95% CI (-0.54, -0.24), p < 0.01] and was more effective in short-term CPSP patients. However, the included studies did not show a significant impact on psychological status, particularly depression. Subgroup analysis suggested that the M1 stimulation point was more effective than other stimulation points [SMD = -0.45, 95% CI (-0.65, -0.25), p < 0.001]. Other stimulation modalities also demonstrated favorable outcomes when compared to rTMS [SMD = -0.67, 95% CI (-1.09, -0.25), p < 0.01].
    UNASSIGNED: NIBS has a positive impact on pain relief in patients with CPSP, but does not enhance patients\' psychological well-being in terms of anxiety or depression. Furthermore, large-sample, high-quality, and multi-center RCTs are needed to explore the benefits of different stimulation durations and parameters in patients with CPSP. The current study has been registered with Prospero under the registration number CRD42023468419.
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  • 文章类型: Journal Article
    探讨淫羊藿总黄酮胶囊对大鼠脑卒中后认知障碍(PSCI)的影响。选择大鼠建立短暂性大脑中动脉闭塞(tMCAO)模型,将神经功能受损大鼠随机分为模型组,低,中间,淫羊藿总黄酮胶囊高剂量组,和尼莫地平片组。给药后测定大鼠的认知功能。苏木精-伊红染色(HE)后观察脑组织病理变化。免疫荧光染色检测脑组织中神经元核(NeuN)和胶质纤维酸性蛋白(GFAP)的分布。淀粉样β1-42(Aβ_(1-42))水平,神经元特异性烯醇化酶(NSE),乙酰胆碱(ACH),多巴胺(DA),5-羟色胺(5-HT),去甲肾上腺素(NE),白细胞介素-1β(IL-1β),肿瘤坏死因子-α(TNF-α),检测大鼠血清超敏C反应蛋白(hs-CRP)。此外,Westernblot检测核因子-κB(NF-κB)的表达,p-NF-κB,NF-κB(IκBα)蛋白的α抑制剂,和海马中的p-IκBα蛋白。实验结果表明,淫羊藿总黄酮胶囊可改善模型大鼠的认知功能,机制可能与调节p-IκBα和p-NF-κB蛋白的表达有关,从而抑制缺血再灌注引起的炎症反应。
    To investigate the effect of epimedium total flavone capsules on post-stroke cognitive impairment(PSCI) in rats. The transient middle cerebral artery occlusion(tMCAO) model was constructed on selected rats, and rats with impaired neurological function were randomly divided into the model group, low, middle, and high dose groups of epimedium total flavone capsules, and nimodipine tablet group. The cognitive function of rats was measured after administration. Pathological changes in brain tissue were observed after hematoxylin-eosin staining(HE). Neuronal nuclei(NeuN) and glial fibrillary acidic protein(GFAP) distribution in brain tissue were tested by immunofluorescent staining. The level of amyloid beta 1-42(Aβ_(1-42)), neuron specific enolase(NSE), acetylcholine(ACH), dopamine(DA), 5-hydroxytryptamine(5-HT), norepinephrine(NE), interleukin-1β(IL-1β), tumor necrosis factor-α(TNF-α), and hypersensitive C-reactive protein(hs-CRP) in rat serum was tested. Moreover, Western blot was utilized to test the expression of nuclear factor-kappaB(NF-κB), p-NF-κB, alpha inhibitor of NF-κB(IκBα) protein, and p-IκBα protein in the hippocampus. The experimental results showed that epimedium total flavone capsules can improve the cognitive function of model rats, and the mechanism may be related to the regulation of the expression of p-IκBα and p-NF-κB proteins, so as to inhibit inflammatory response induced by ischemia-reperfusion.
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  • 文章类型: Journal Article
    卒中后认知障碍(PSCI)仍然是缺血性卒中最常见的后果。在这项研究中,我们旨在研究褪黑素(MT)在改善中风小鼠认知功能障碍中的作用和机制。我们使用CoCl2诱导的缺氧损伤的SH-SY5Y细胞作为中风的细胞模型,并使用光血栓诱导的缺血性中风小鼠作为动物模型。我们发现中风引起的线粒体自噬上调,凋亡,神经元突触可塑性在体内和体外均受损。新型物体识别试验和Y型迷宫结果显示中风小鼠存在明显的认知缺陷,和Nissl染色显示中风小鼠的神经元丢失。相比之下,MT在体内和体外抑制过度的线粒体自噬,并降低线粒体自噬蛋白PINK1和Parkin的水平,免疫荧光染色显示Tom20和LC3的共定位减少。在透射电子显微镜下可以直接观察到线粒体自噬水平的显着抑制。此外,行为实验和Nissl染色表明,MT改善了中风后小鼠的认知缺陷并减少了神经元丢失。我们的结果表明,MT抑制过度的线粒体自噬并改善PSCI。这些发现强调了MT作为PSCI预防药物的潜力,提供了有希望的治疗意义。
    Post-stroke cognitive impairment (PSCI) remains the most common consequence of ischemic stroke. In this study, we aimed to investigate the role and mechanisms of melatonin (MT) in improving cognitive dysfunction in stroke mice. We used CoCl2-induced hypoxia-injured SH-SY5Y cells as a cellular model of stroke and photothrombotic-induced ischemic stroke mice as an animal model. We found that the stroke-induced upregulation of mitophagy, apoptosis, and neuronal synaptic plasticity was impaired both in vivo and in vitro. The results of the novel object recognition test and Y-maze showed significant cognitive deficits in the stroke mice, and Nissl staining showed a loss of neurons in the stroke mice. In contrast, MT inhibited excessive mitophagy both in vivo and in vitro and decreased the levels of mitophagy proteins PINK1 and Parkin, and immunofluorescence staining showed reduced co-localization of Tom20 and LC3. A significant inhibition of mitophagy levels could be directly observed under transmission electron microscopy. Furthermore, behavioral experiments and Nissl staining showed that MT ameliorated cognitive deficits and reduced neuronal loss in mice following a stroke. Our results demonstrated that MT inhibits excessive mitophagy and improves PSCI. These findings highlight the potential of MT as a preventive drug for PSCI, offering promising therapeutic implications.
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  • 文章类型: Journal Article
    背景:这项前瞻性研究的目的是评估全身免疫-炎症指数(SII)和全身炎症反应指数(SIRI)的相关性,急性缺血性卒中(AIS)患者的PSCI。
    方法:从2022年1月1日至2023年3月1日连续纳入首次发病的AIS患者。在入院时收集基线信息。第二天早上抽血。发病后3个月,通过蒙特利尔认知评估(MoCA)评估认知功能。采用Logistic回归分析探讨SII、SIRI,和PSCI。进行接收器工作特性(ROC)以评估SII的预测能力。
    结果:招募了332名参与者,和193开发的PSCI。与没有PSCI的患者相比,PSCI患者的SII更高(587.75(337.42,988.95)。345.66(248.44,572.89),P<0.001)和SIRI(1.59(0.95,2.84)与1.02(0.63,1.55),P=0.007)。SII和SIRI与MoCA评分呈负相关(均P<0.05)。多因素logistic回归分析显示SII与PSCI独立相关(P<0.001),而SIRI不是。SII预测PSCI的最佳截止值为676.83×109/L。
    结论:AIS患者入院时SII水平较高与3个月后PSCI独立相关。
    BACKGROUND: The purpose of this prospective study was to evaluate the association of systemic immune-inflammation index (SII) and systemic inflammation response index (SIRI), with PSCI in patients with acute ischemic stroke (AIS).
    METHODS: First-onset AIS patients were consecutively included from January 1, 2022 to March 1, 2023. The baseline information was collected at admission. Fasting blood was drawn the next morning. Cognitive function was assessed by the Montreal Cognitive Assessment (MoCA) 3 months after onset. Logistic regression analysis was performed to explore the correlation between SII, SIRI, and PSCI. Receiver operating characteristic (ROC) was conducted to evaluate the predictive ability of SII.
    RESULTS: 332 participants were recruited, and 193 developed PSCI. Compared with patients without PSCI, the patients with PSCI had higher SII (587.75 (337.42, 988.95) vs. 345.66 (248.44, 572.89), P<0.001) and SIRI (1.59 (0.95, 2.84) vs. 1.02 (0.63, 1.55), P=0.007). SII and SIRI negatively correlated with MoCA scores (both P<0.05). The multivariable logistic regression analysis indicated that SII was independently associated with PSCI (P<0.001), while SIRI was not. The optimal cutoff for SII to predict PSCI was 676.83×109/L.
    CONCLUSIONS: A higher level of SII upon admission was independently correlated to PSCI three months later in AIS patients.
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