epileptic seizure

癫痫发作
  • 文章类型: Journal Article
    硬膜外脊髓刺激(SCS)用于治疗顽固性疼痛,并在临床实践中广泛使用。在以往的基础研究中,已经证明了SCS对癫痫发作的治疗作用。然而,机制尚未阐明。在这项研究中,我们调查了SCS的治疗效果和癫痫发作的影响。首先,在颈椎中进行SCS。将大鼠分为四组:对照组和以2、50和300Hz频率进行SCS的治疗组。两天后,通过腹膜内施用海藻酸来引起惊厥,随后进行视频监控以评估癫痫发作。我们还通过荧光免疫染色评估了海马中的神经胶质细胞,脑电图测量,和炎性细胞因子如C-C基序趋化因子配体2(CCL2)通过定量实时聚合酶链反应。300Hz组癫痫发作频率和胶质细胞数量明显低于对照组。300Hz的SCS降低了CCL2的基因表达水平,从而诱导了单核细胞的迁移。SCS通过抑制CCL2介导的级联反应而具有抗癫痫作用。抑制CCL2和神经胶质细胞可能与抑制癫痫发作有关。
    Epidural spinal cord stimulation (SCS) is indicated for the treatment of intractable pain and is widely used in clinical practice. In previous basic research, the therapeutic effects of SCS have been demonstrated for epileptic seizure. However, the mechanism has not yet been elucidated. In this study, we investigated the therapeutic effect of SCS and the influence of epileptic seizure. First, SCS in the cervical spine was performed. The rats were divided into four groups: control group and treatment groups with SCS conducted at 2, 50, and 300 Hz frequency. Two days later, convulsions were induced by the intraperitoneal administration of kainic acid, followed by video monitoring to assess seizures. We also evaluated glial cells in the hippocampus by fluorescent immunostaining, electroencephalogram measurements, and inflammatory cytokines such as C-C motif chemokine ligand 2 (CCL2) by quantitative real-time polymerase chain reaction. Seizure frequency and the number of glial cells were significantly lower in the 300 Hz group than in the control group. SCS at 300 Hz decreased gene expression level of CCL2, which induces monocyte migration. SCS has anti-seizure effects by inhibiting CCL2-mediated cascades. The suppression of CCL2 and glial cells may be associated with the suppression of epileptic seizure.
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  • 文章类型: Journal Article
    背景:全球超过60%的癫痫患者是儿童,他们的早期诊断和治疗对他们的发展至关重要,可以大大减少疾病对家庭和社会的负担。已经提出了许多用于从EEG自动检测癫痫的算法。然而,在临床实践中,无法始终保证脑电图检查期间癫痫发作的发生。专门使用癫痫发作EEG进行检测风险的模型人为增强了性能指标。因此,迫切需要一种普遍适用的模型,可以在各种复杂的现实场景中执行自动癫痫检测。
    方法:为了解决这个问题,我们设计了一种新技术,采用具有自我注意力的时间卷积神经网络(TCN-SA)。我们的模型包括两个主要成分:从EEG信号中提取时变特征的TCN,其次是一个自我注意(SA)层,赋予这些特征的重要性。通过关注关键特征,我们的模型提高了癫痫检测的分类准确性.
    结果:在我们收集的小儿癫痫数据集和波恩数据集上验证了我们模型的有效性,在我们的数据集上达到95.50%的准确率,和97.37%(Av.E),和93.50%(B对E),分别。与其他深度学习架构(时间卷积神经网络,自我关注网络,和标准化的卷积神经网络)使用相同的数据集,我们的TCN-SA模型在癫痫自动检测方面表现优异.
    结论:TCN-SA方法的有效性证明了其作为自动检测癫痫的有价值工具的潜力,在多样化和复杂的现实世界的临床设置提供显著的好处。
    BACKGROUND: Over 60% of epilepsy patients globally are children, whose early diagnosis and treatment are critical for their development and can substantially reduce the disease\'s burden on both families and society. Numerous algorithms for automated epilepsy detection from EEGs have been proposed. Yet, the occurrence of epileptic seizures during an EEG exam cannot always be guaranteed in clinical practice. Models that exclusively use seizure EEGs for detection risk artificially enhanced performance metrics. Therefore, there is a pressing need for a universally applicable model that can perform automatic epilepsy detection in a variety of complex real-world scenarios.
    METHODS: To address this problem, we have devised a novel technique employing a temporal convolutional neural network with self-attention (TCN-SA). Our model comprises two primary components: a TCN for extracting time-variant features from EEG signals, followed by a self-attention (SA) layer that assigns importance to these features. By focusing on key features, our model achieves heightened classification accuracy for epilepsy detection.
    RESULTS: The efficacy of our model was validated on a pediatric epilepsy dataset we collected and on the Bonn dataset, attaining accuracies of 95.50% on our dataset, and 97.37% (A v. E), and 93.50% (B vs E), respectively. When compared with other deep learning architectures (temporal convolutional neural network, self-attention network, and standardized convolutional neural network) using the same datasets, our TCN-SA model demonstrated superior performance in the automated detection of epilepsy.
    CONCLUSIONS: The proven effectiveness of the TCN-SA approach substantiates its potential as a valuable tool for the automated detection of epilepsy, offering significant benefits in diverse and complex real-world clinical settings.
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  • 文章类型: Journal Article
    背景:癫痫是人类头痛后最常见的神经系统疾病。根据世界卫生组织,全世界大约有50-6500万人被诊断患有癫痫,每年约有200万例新的癫痫病例被添加到这个数字中。
    方法:设计为描述性和横断面研究,这项研究是对132名小学教师进行的。对教师进行了癫痫和癫痫发作的培训。采用面对面访谈的方法收集前测和后测研究数据。在这个过程中,使用癫痫知识量表以及设计问题以了解教师的个人特征的调查表格。社会科学统计软件包25.0用于研究数据的统计分析。在研究中,如果p值低于0.05(p<0.05),则具有统计学意义。
    结果:在参与研究的所有教师中,59.1%为女性,90.2%已婚,47.7%的人以前曾目睹过癫痫发作。培训前教师测试前癫痫知识得分平均值为8.43±4.31分,培训后教师测试后癫痫知识得分平均值为12.65±2.48分。前测和后测得分的平均值之间的差异具有统计学意义(p=.000)。培训结束后,教师从癫痫知识量表的每个项目中获得的得分均值均有统计学上的显着增加(p<0.05)。
    结论:由于培训后教师对癫痫和癫痫发作的知识水平有统计学上的显著提高,建议对所有老师进行有关癫痫和癫痫发作方法的培训,此外,建议在大学的课程中包括这些主题。
    BACKGROUND: Epilepsy is the most common neurological disorder among humans after headaches. According to the World Health Organization, approximately 50-65 million individuals were diagnosed with epilepsy throughout the world, and around two million new cases of epilepsy are added to this figure every year.
    METHODS: Designed as descriptive and cross-sectional research, this study was performed on 132 elementary school teachers. Training on epilepsy and epileptic seizure was given to teachers. The pretest and posttest research data were collected with the face-to-face interview method. In this process, the epilepsy knowledge scale was used as well as a survey form that had questions designed to find out about teachers\' personal characteristics. The Statistical Package for Social Science 25.0 was utilized in the statistical analysis of research data. In the research, the statistical significance was identified if the p-value was below.05 (p < .05).
    RESULTS: Of all teachers participating in the study, 59.1% were female, 90.2% were married, and 47.7% witnessed an epilepsy seizure before. The mean of teachers\' pretest epilepsy knowledge scores was 8.43 ± 4.31 points before the training while the mean of their posttest epilepsy knowledge scores was 12.65 ± 2.48 points after the training. The difference between the means of pretest and posttest scores was statistically significant (p = .000). After the training, there was a statistically significant increase in means of scores obtained by teachers from each item of the epilepsy knowledge scale (p < .05).
    CONCLUSIONS: As there was a statistically significant improvement in levels of teachers\' knowledge about both epilepsy and epileptic seizure after the training, it is recommended that the training about the approach to epilepsy and epileptic seizure be given to all teachers, and additionally, including these topics in the course curricula of universities is recommended.
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  • 文章类型: Journal Article
    目的:已发现卵圆孔未闭(PFO)的闭合手术可有效控制隐源性中风和偏头痛,但不确定PFO封堵是否也能缓解癫痫发作。本研究旨在观察PFO封堵术对癫痫发作的治疗效果。
    方法:自7月11日起,2017年,在华西医院神经内科,四川大学,成都,我们一直定期对接受PFO封堵术的癫痫患者进行监测.患者的临床信息,比如频率,持续时间,以及癫痫发作的严重程度,详细记录手术前后以及术后安全事件.
    结果:在31例确诊PFO的癫痫患者中(27例为耐药性癫痫,87.10%),手术平均年龄为23.74岁,女性12例(38.71%)。经过一年的随访,26例患者(83.87%)实现了癫痫发作频率的缓解,其中22人(70.97%)的缓解率超过50%。此外,与手术前相比,22例(70.97%)报告平均癫痫发作持续时间减少,20例(64.52%)报告癫痫发作严重程度降低。在发作频率指标中,平均持续时间和严重程度,术前和术后比较存在显著差异,所有检验p值均<0.05.此外,除一名短暂报告胸痛的患者外,未报告严重的安全事件,所有患者均表示有效的PFO闭合。
    结论:PFO闭合首次被证明导致频率显着降低,持续时间,以及癫痫发作的严重程度。耐药性癫痫和大分流PFO的患者是进行PFO闭合的理想人选。
    结论:由于发现PFO封堵术对隐源性中风和偏头痛有良好的治疗效果,它已成为治疗神经系统疾病的可靠补充疗法,而伴有PFO的耐药癫痫有望成为下一个PFO封堵术可显著改善的目标疾病。
    OBJECTIVE: Closure surgery of patent foramen ovale (PFO) has been found to effectively control cryptogenic stroke and migraine, but it is uncertain whether PFO closure could also alleviate epileptic seizures. This study aims to observe the therapeutic effect of PFO closure on epileptic seizures.
    METHODS: Since July 11th, 2017, in the neurology department of West China Hospital, Sichuan University, Chengdu, we have been regularly monitoring patients with epilepsy who have undergone PFO closure. The patient\'s clinical information, such as frequency, duration, and severity of seizures, before and after surgery was recorded in detail as well as postoperative safety events.
    RESULTS: Of the 31 epilepsy patients who confirmed PFO observed (27 cases were drug-resistant epilepsy, 87.10%), average age of surgery was 23.74 years, and 12 cases were female (38.71%). After one-year follow-up, 26 patients (83.87%) achieved remission of seizure frequency, and 22 of whom (70.97%) experienced a remission of more than 50%. Additionally, compared to before surgery, 22 cases (70.97%) reported a decrease in the average seizure duration, and 20 cases (64.52%) reported a reduction in seizure severity. In the seizure indicators of frequency, average duration and severity, significant differences were identified between preoperative and postoperative comparisons with all test p values were <0.05. Furthermore, no serious safety events were reported except for one patient who briefly reported chest pain, and all patients expressed effective PFO closure.
    CONCLUSIONS: The PFO closure has been shown for the first time to result in a significant reduction in the frequency, duration, and severity of seizures. Patients with drug-resistant epilepsy and PFO with a large shunt are ideal candidates for undergoing PFO closure.
    CONCLUSIONS: Since PFO closure was found to have a good therapeutic effect on cryptogenic stroke and migraine, it has become a credible complementary therapy for the treatment of neurological diseases, and drug-resistant epilepsy with PFO is expected to become the next target disease that PFO closure could significantly improve.
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  • 文章类型: Published Erratum
    [这更正了文章DOI:10.3389/fendo.2023.1220957。].
    [This corrects the article DOI: 10.3389/fendo.2023.1220957.].
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  • 文章类型: Case Reports
    高甘油三酯血症引起的急性胰腺炎很少发生在妊娠糖尿病的妊娠中期。对于这些患者来说,关于伴随高血糖的现有知识不足.我们报告了一例妊娠糖尿病和高甘油三酯血症诱发的急性胰腺炎围产期高血糖后胎盘早剥和癫痫发作的病例。胎盘早剥和癫痫发作的发生可能与伴随的高血糖有关。在接受胰岛素治疗后,癫痫发作终止。即使患者已度过高甘油三酯血症诱发的急性胰腺炎急性期,我们也应更加重视围产期高血糖的不良反应,继续给予适当的胰岛素治疗。
    Hypertriglyceridemia-induced acute pancreatitis seldom occurs in the second trimester of pregnancy with gestational diabetes mellitus. For these patients, the existing knowledge on concomitant hyperglycemia is not sufficient. We report a case of abruptio placentae and epileptic seizure following perinatal hyperglycaemia in woman with gestational diabetes mellitus and hypertriglyceridemia-induced acute pancreatitis. The occurrence of abruptio placentae and epileptic seizure may be associated with concomitant hyperglycemia, and the epileptic seizure was terminated after she underwent treatment with insulin. We should pay more attention to the adverse effects of perinatal hyperglycemia and continue to give appropriate insulin treatment even if patients have passed the acute phase of hypertriglyceridemia-induced acute pancreatitis.
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  • 文章类型: Journal Article
    癫痫是狗中最常见的慢性神经综合征之一,对狗和主人的生活质量都有严重影响。癫痫发作诱发因素(SPF)(也称为“触发因素”或“激发因素”)已在患有特发性癫痫的人类和狗中进行了研究和报道。在狗的压力下,荷尔蒙,睡眠剥夺,天气被报告为SPF。边境牧羊犬(BC)是一种易患特发性癫痫的狗,结果往往很差。BC被描述为一只非常敏感的狗,非常关注它们的主人,这可能会影响他们和他们的主人的压力水平。在这篇文章中,我们描述了6个与特发性癫痫无关的BCs,其中发现了几个显著的SPF,避免它们改善了这些狗的结果。可能的SPF对于每只狗是不同的。SPF是,其中,家里的另一只狗,缺乏智力挑战,自闭症儿童的存在,繁忙的街道,与业主的关系,在沙滩上扔一个球.这些病例表明,认识到SPF并采取有关管理的措施可以导致减少癫痫发作频率或甚至实现癫痫发作自由。
    Epilepsy is one of the most common chronic neurological syndromes in dogs and has serious implications for the quality of life of both the dogs and owners. Seizure-precipitating factors (SPFs) (also termed \"triggers\" or \"provocative factors\") have been studied and reported in both humans and dogs with idiopathic epilepsy. In dogs stress, hormones, sleep deprivation, and the weather have been reported as SPFs. The Border Collie (BC) is a breed of dog that is predisposed to idiopathic epilepsy, and the outcome is often poor. BC is described as a very sensitive dog with a strong focus on their owners, and this may have an influence on their and their owners\' stress level. In this article, we described six unrelated BCs with idiopathic epilepsy in which several remarkable SPFs were identified, and avoiding them improved the outcome of these dogs. The possible SPFs were different for each dog. The SPFs were, among others, the other dog in the family, the lack of intellectual challenge, the presence of an autistic child, a busy street, the relation with the owner, and throwing a ball at the beach. These cases illustrate that recognizing the SPF(s) and taking measures with regard to management can lead to a reduction in epileptic seizure frequency or even achieving seizure freedom.
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  • 文章类型: Journal Article
    深度学习(DL)正在成为一种成功的技术,用于自动检测和区分可能被错过或错误分类的自发性癫痫发作。在这里,我们提出了一种基于最佳DL模型的系统架构,用于非重叠窗口技术的二进制和多组分类,我们在TUSZ数据集上进行了测试。系统准确检测癫痫发作(87.7%Sn,91.16%Sp)并仔细区分八种发作类型(95-100%Acc)。EEG采样率从50Hz增加到250Hz,提高了模型性能:癫痫发作检测的精度提高了5%,和癫痫发作分化7%。低采样率是使用EEG数据训练可靠模型的合理解决方案。将EEG电极的数量从21个减少到8个并不影响癫痫发作的检测,但癫痫发作的分化显着恶化:98.24±0.17与85.14±3.14%召回。在检测癫痫发作时,所有电极提供同等的信息输入,但是在癫痫发作分化中,它们的信息价值各不相同。我们用可解释的ML改进了模型的可解释性。激活最大化强调了八种癫痫发作类型特有的EEG模式的存在。癫痫源的皮质投影描绘了全身性癫痫发作和局灶性癫痫发作之间的差异。可解释的ML技术证实,我们的系统将生物学上有意义的特征识别为脑电图中癫痫活动的指标。
    Deep learning (DL) is emerging as a successful technique for automatic detection and differentiation of spontaneous seizures that may otherwise be missed or misclassified. Herein, we propose a system architecture based on top-performing DL models for binary and multigroup classifications with the non-overlapping window technique, which we tested on the TUSZ dataset. The system accurately detects seizure episodes (87.7% Sn, 91.16% Sp) and carefully distinguishes eight seizure types (95-100% Acc). An increase in EEG sampling rate from 50 to 250 Hz boosted model performance: the precision of seizure detection rose by 5%, and seizure differentiation by 7%. A low sampling rate is a reasonable solution for training reliable models with EEG data. Decreasing the number of EEG electrodes from 21 to 8 did not affect seizure detection but worsened seizure differentiation significantly: 98.24 ± 0.17 vs. 85.14 ± 3.14% recall. In detecting epileptic episodes, all electrodes provided equally informative input, but in seizure differentiation, their informative value varied. We improved model explainability with interpretable ML. Activation maximization highlighted the presence of EEG patterns specific to eight seizure types. Cortical projection of epileptic sources depicted differences between generalized and focal seizures. Interpretable ML techniques confirmed that our system recognizes biologically meaningful features as indicators of epileptic activity in EEG.
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  • 文章类型: Case Reports
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  • 文章类型: Journal Article
    背景耐药癫痫患者通常接受立体脑电图(SEEG)颅内监测以进行手术评估。我们目前定义癫痫发生区的做法在很大程度上依赖于识别癫痫发作区(SOZ),但发作间癫痫样放电(IEDs)的临床意义尚不明确.方法我们回顾性地确定了在2019年1月至2022年5月期间接受SEEG的成年患者。为了研究简易爆炸装置的激活模式,我们将IED分类为领先的尖峰(涉及SOZ内)和遥远的尖峰(SOZ外)。我们计算了每个患者产生远距尖峰的大脑子区域的总数。我们将它们与癫痫类型相关联,持续时间,和手术结果(恩格尔I:好的结果和恩格尔II-IV:差的结果)。结果在研究期间共发现22例患者,16例接受了手术干预(消融或切除),术后1年随访.最常见的IED形态是单个尖峰或尖锐,然后是周期性尖峰或尖锐。我们发现,在SEEG监测的前24小时内,有87%(n=19/22)的前导尖峰被激活,而远处尖峰没有观察到激活模式。我们发现,产生远处尖峰的子区域数量较多与不良的手术结果相关(p=0.002)。然而,我们没有发现产生远距尖峰的亚区域数量与癫痫持续时间之间有任何显著关联(p=0.67),颞部或颞外发作性癫痫(p=0.58),或存在MRI病变(p=0.62)。结论在SEEG监测的最初24小时内,发现SOZ中涉及的IED被激活,这可以帮助识别病理尖峰和刺激区的有针对性的映射。我们还观察到,在SOZ之外产生IED的脑亚区域数量较多,与不良的手术结果相关。但这一观察结果需要通过更大样本量的前瞻性研究进一步研究.
    Background Patients with drug-resistant epilepsy commonly undergo stereo-electroencephalography (SEEG) intracranial monitoring for surgical evaluation. Our current practice of defining the epileptogenic zone relies heavily on recognizing the seizure onset zone (SOZ), but the clinical significance of interictal epileptiform discharges (IEDs) is not well established. Methodology We retrospectively identified adult patients who underwent SEEG between January 2019 and May 2022. To study IED activation patterns, we classified IEDs as leading spikes (involved within the SOZ) and distant spikes (outside the SOZ). We calculated each patient\'s total number of brain subregions generating distant spikes. We correlated them with epilepsy type, duration, and surgical outcome (Engel I: good outcome and Engel II-IV: poor outcome). Results A total of 22 patients were identified during the study period, and 16 underwent surgical intervention (ablation or resection) with one-year post-surgery follow-up. The most common IED morphology was a single spike or sharp followed by periodic spikes or sharps. We found that 87% (n = 19/22) of leading spikes were activated during the first 24 hours of SEEG monitoring, whereas no activation pattern was observed for distant spikes. We found that a higher number of subregions generating distant spikes were associated with poor surgical outcomes (p = 0.002). However, we did not find any significant association between the number of subregions generating distant spikes with epilepsy duration (p = 0.67), temporal or extratemporal-onset epilepsy (p = 0.58), or the presence of an MRI lesion (p = 0.62). Conclusions IEDs involved within the SOZ were found to be activated during the first 24 hours of SEEG monitoring, which could aid in recognizing the pathological spikes and targeted mapping of the irritative zone. We also observed that a higher number of brain subregions generating IEDs outside the SOZ were associated with poor surgical outcomes, but this observation needs to be further studied with larger sample size prospective studies.
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