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Hydro-Mechanical Neonatal Encephalopathy (HNE): An Alternative Hypothesis 水机械性新生儿脑病(HNE):另一种假说
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000245
Talbert Dg
Background: The World Health Organisation estimates that 4 million neonatal deaths occur yearly due to perinatal asphyxia, representing 38% of deaths of children under 5 years of age. Typically, neonatal encephalopathy occurs unexpectedly following an otherwise uneventful pregnancy. Studies have shown that neural damage after hypoxiaischemia is delayed for several hours and that treatment with prolonged moderate hypothermia reduces cerebral injury and improves neurological outcome. Moderate hypothermia for 72 hours, if started within 6 hours of birth, reduces the rate of death and disability seen at 18 months of age. Current explanations concentrate on various maladies that might cause such profound injuries. This hypothesis proposes the existence of a mechanical form of trauma arising in the birthing process. The hydro-mechanical hypothesis: The Hydro-Mechanical Hypothesis comes in two phases, an initial effusive phase, followed by an ischemic phase. The effusive phase occurs, and can only occur, during delivery. The full uterine contraction pressure appears across the walls of cerebral vessels as the head emerges, but the body and placenta are still subject to contraction pressure. This pressure rapidly drives fluid out of cerebral vasculature into the surrounding interstitium. The ischemic phase follows delivery. The distending pressure is no longer present, but the interstitial pressure remains high, constricting vessels, particularly cerebral capillaries and venules. This temporary compression will only last until the excessive interstitial fluid has dispersed, but many neurons may die in the meantime. Hypothermia works by reducing the metabolic demand in the neurons so that they can survive, though not necessarily function, on a meagre gas exchange until the excess interstitial fluid has dispersed and normal blood flow is restored. Conclusion: A hydro-mechanical form of Neonatal Encephalopathy is possible which has no connection with the preceding pregnancy. This form would be expected to benefit from appropriate hypothermic therapy.
背景:世界卫生组织估计,每年有400万新生儿死于围产期窒息,占5岁以下儿童死亡人数的38%。通常,新生儿脑病发生意外后,否则平安无事的怀孕。研究表明,缺氧缺血后的神经损伤可延迟数小时,延长中低温治疗可减少脑损伤并改善神经系统预后。如果在出生后6小时内开始进行72小时的中度低温治疗,可降低18个月大时的死亡率和致残率。目前的解释集中在可能造成如此严重伤害的各种疾病上。这一假设提出了在分娩过程中产生的机械形式的创伤的存在。流体力学假说:流体力学假说分为两个阶段,即最初的流溢期和随后的缺血期。渗出期发生,而且只能发生在分娩期间。当胎儿头部出现时,整个子宫的收缩压力通过脑血管壁显现出来,但身体和胎盘仍然承受着收缩压力。这种压力迅速驱使液体从脑血管系统进入周围的间质。分娩后为缺血期。扩张压不再存在,但间质压仍然很高,收缩血管,特别是脑毛细血管和小静脉。这种暂时的压缩只会持续到过量的间质液分散,但许多神经元可能在此期间死亡。低温的作用是减少神经元的代谢需求,使它们能够在少量的气体交换下存活,尽管不一定能发挥作用,直到过量的间质液消散,恢复正常的血液流动。结论:新生儿脑病可能是一种与妊娠无关的水力学形式。这种形式预计将受益于适当的低温治疗。
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引用次数: 0
An Interesting Eating Epilepsy Case Induced by Bread Eating 一个吃面包诱发食性癫痫的有趣案例
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000276
M. Kisli, Ahmet Yardım
Eating epilepsy is evaluated in reflex epilepsies (RE). Different genetic, ethnic, acquired factors and to the bulky meals rich in carbohydrates consumed may play a role in etiology of RE or supported by a brain lesion. In this situation, seizures provoked by eating is a rare entity and the ictal semiology differs from patient to patient. Focal impaired awareness seizure is most commonly described. Diffuse cerebral damage is often noted on MRI. Reproduction of these seizures during EEG recording is often difficult as the stimulus is frequently complex, involving different components of eating, such as the sight of food, proprioceptive, olfactive or gustative stimulations, chewing, salivation, and gastric distension of eating. The case presented here was an eating epilepsy case triggered by bread eating and implicated, based on EEG and MRI.
在反射性癫痫(RE)中评估进食性癫痫。不同的遗传、种族、后天因素以及摄入大量碳水化合物可能在RE的病因中起作用或与脑损伤有关。在这种情况下,由进食引起的癫痫发作是一种罕见的实体,其关键的符号学因患者而异。局灶性意识受损癫痫是最常见的描述。弥漫性脑损伤常可见于MRI。在脑电图记录中再现这些癫痫发作通常很困难,因为刺激通常很复杂,涉及进食的不同组成部分,如食物的视觉、本体感受、嗅觉或味觉刺激、咀嚼、流涎和进食时的胃胀。根据脑电图和核磁共振检查,本病例是一例因吃面包而引起的食用性癫痫。
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引用次数: 3
Sex Differences in Hippocampal Long-Term Depression and the N-Methyl-DAspartate Receptor in Rats - Positive Correlation between LTD and Glun2b Subunit 大鼠海马长期抑郁和n -甲基-天冬氨酸受体的性别差异——LTD与Glun2b亚基的正相关
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000267
N. Dursun, Y. Bayar, B. Tan, C. Süer, Hamiyet Dönmez AltuntaÅ
Background: Numerous studies have suggested that sexual dimorphism may exist in learning and memory. Herein, we associated sex differences in the long-term potentiation (LTP) and the long-term depression (LTD) with the N-methyl-D-aspartate (NMDA) receptor subunits, given their well-known roles in the establishment of longterm memory. Methods: After a 15-min baseline recording, LTP and LTD were induced by application of high- and low- frequency stimulation protocols, respectively. The averages of the excitatory postsynaptic potential (EPSP) slopes and population spike (PS) amplitudes between 70-75 minutes were used as a measure of the LTP/LTD. The mRNA level of GluN1, GluN2A and GluN2B subunits were evaluated using real-time quantitative polymerase chain reaction (RT-qPCR) analysis. Results: Male and female rats showed no differences in a pre-LTP and pre-LTD I/O curves. Although the magnitude of LTP was similar between sexes, female animals exhibited LTD in much more easily than their male counterparts in the absence of the difference in I/O curves. Concomitantly, none of transcript significantly differed between sexes for baseline gene expression, while the decreasing NR2A/NR2B ratio in female rats throughout LTP and LTD time courses was only observed after LTP in male rats. In addition, NR1 mRNA expression was increased in male rats compared to female rats 60- min after LTP induction. Conclusion: The capacity for LTD expression is higher in female rats compared to male rats in young adult ages, and this sex difference is paralleled by a sex difference in GluN2B subunit generated by perforant path LFS. The present study suggests that sex differences in hippocampus-dependant learning tasks may be result of sexually dimorphic hippocampal LTD, but not LTP.
背景:大量研究表明两性二态性可能存在于学习和记忆中。鉴于n -甲基- d -天冬氨酸(NMDA)受体亚基在长期记忆的建立中发挥着众所周知的作用,我们将长期增强(LTP)和长期抑郁(LTD)的性别差异与NMDA受体亚基联系起来。方法:基线记录15 min后,分别采用高频和低频刺激方案诱导LTP和LTD。在70-75分钟之间,兴奋性突触后电位(EPSP)斜率和群体峰(PS)振幅的平均值被用作LTP/LTD的测量。采用实时定量聚合酶链反应(RT-qPCR)分析GluN1、GluN2A和GluN2B亚基mRNA表达水平。结果:雄性和雌性大鼠在ltp前和ltd前的I/O曲线上没有差异。虽然LTP的大小在两性之间相似,但在I/O曲线不存在差异的情况下,雌性动物比雄性动物更容易出现LTP。同时,基线基因表达在性别之间没有显著差异,而雌性大鼠在LTP和LTD时间过程中NR2A/NR2B比率下降仅在雄性大鼠LTP后观察到。LTP诱导60 min后,雄性大鼠NR1 mRNA表达明显高于雌性大鼠。结论:年轻成年期雌性大鼠的LTD表达能力高于雄性大鼠,这种性别差异与穿孔路径LFS产生的GluN2B亚基的性别差异相一致。本研究表明,海马体依赖性学习任务的性别差异可能是海马体性别二态有限的结果,而不是LTP的结果。
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引用次数: 3
Application of Multiplex PCR for Detection of Duchunne Muscular Dystrophy: A Childhood Neuromuscular Disorder 多重聚合酶链反应检测杜春肌营养不良:一种儿童神经肌肉疾病
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000262
Gaurava Srivastava, P. Srivastava
Duchenne muscular dystrophy (DMD) is an X-linked recessive disorder that affects 1 in 3,600 - 6,000 males and is caused by mutation in the dystrophin gene. This is neuromuscular disorder with progressive muscle weakness, which predominantly affect males. Till date no absolute cure of the disease is available in clinical practice. Early diagnosis and timely management are requisite for DMD and it enhances the quality of life of patients. Various diagnostic approaches are available but due to accuracy, early detection and non-invasive method molecular tools are most remarkable in recent era. Multiplex PCR has emerged as one of the most convenient tools for screening of DMD in terms of its sensitivity, specificity, accuracy, cost effectiveness and time consumption. The current study emphasizes advantages and shortcomings of multiplex PCR with reference to most of the past studies along with its challenges for DMD detection in detail. Mutation detection is evidently crucial for diagnosis, as well as it may also be significant for future therapeutic purposes. Further research is important to elucidate specific mutation pattern in association with management and therapies of proband.
杜氏肌营养不良症(DMD)是一种x连锁隐性疾病,每3600 - 6000名男性中就有1人患病,是由肌营养不良蛋白基因突变引起的。这是一种伴有进行性肌肉无力的神经肌肉紊乱,主要影响男性。到目前为止,在临床实践中还没有完全治愈这种疾病的办法。早期诊断和及时治疗是提高DMD患者生活质量的必要条件。各种诊断方法是可用的,但由于准确性,早期检测和非侵入性方法分子工具是最显着的在最近的时代。多重PCR在灵敏性、特异性、准确性、成本效益和耗时方面已成为筛选DMD最方便的工具之一。本研究结合以往的大部分研究,重点介绍了多重PCR的优点和不足,并详细介绍了多重PCR在检测DMD方面面临的挑战。突变检测显然是诊断的关键,以及它也可能对未来的治疗目的显著。进一步的研究阐明与先证者的管理和治疗相关的特定突变模式是很重要的。
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引用次数: 1
Basic Mechanisms of Glioblastoma Multiforme Cell Invasion: A Review Article 胶质母细胞瘤多形性细胞侵袭的基本机制综述
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000279
M. Waqas, S. Enam, M. Batool, H. Rai
Glioblastoma multiforme (GBM) is the most common and lethal primary glial neoplasm. GBM can develop both “de novo” or evolve from a previous astrocytoma, being characterized by high proliferation and infiltration into the surrounding tissue. This invasive behavior is the most contributing factor for the poor prognosis of this cancer, despite the multimodal treatment with surgery, radiotherapy and chemotherapy. Understanding and targeting the molecular mechanisms regulating glioma invasion and progression may help in identifying novel therapeutic targets for GBM treatment. This review will give an overview of some of the signaling pathways that have been shown to positively and negatively regulate GBM invasion, including the Wnt, PI3K/Akt, sonic hedgehog-GLI1 and microRNAs.
多形性胶质母细胞瘤(GBM)是最常见和最致命的原发性胶质肿瘤。GBM既可以“从头开始”发展,也可以从先前的星形细胞瘤进化而来,其特征是高增殖和浸润到周围组织。尽管采用了手术、放疗和化疗等多种治疗方式,但这种侵袭性行为是导致该癌症预后不良的最主要因素。了解和定位调节胶质瘤侵袭和进展的分子机制可能有助于确定GBM治疗的新靶点。本文将对Wnt、PI3K/Akt、sonic hedgehog-GLI1和microrna等信号通路进行综述,这些信号通路对GBM侵袭具有正调控和负调控作用。
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引用次数: 3
Allostastic Load and Allostatic Weight: A Literature Review of a Confusing Concept 适应弹性负荷和适应静态重量:一个混淆概念的文献综述
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000242
F. E. Sosso
Allostatic load is a recent emerging concept, related to increase of clinical manifestation of stress. also named allostatic weight, it is a group of symptoms and dysfunction due to an intensive and permanent biological response to environmental and psychological stressors. It is not easy to identify clearly how its happened, when it started and during how many times response was higher. In definitive, researchers, patients and even health practitioners; are not currently able to handle this problem. In this review, we discuss about different approaches and definitions of what is an allostatic weight. We also give perspective and suggestion of what should be the next research in this context.
适应负荷是一个新近出现的概念,与临床表现的压力增加有关。也被称为适应体重,它是由于对环境和心理压力源的强烈和永久的生物反应而引起的一组症状和功能障碍。不容易清楚地确定它是如何发生的,何时开始以及在多少次反应中更高。最终,研究人员、患者甚至卫生从业人员;我们目前无法处理这个问题。在这篇综述中,我们讨论了什么是适应负荷的不同方法和定义。我们还提出了在此背景下下一步研究的观点和建议。
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引用次数: 8
VCAM-1 as an Endothelial Factor for Diagnosis of Dementia in Parkinsonâs Disease VCAM-1作为内皮因子在帕金森病<e:1>中诊断痴呆的作用
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000243
A. Sobhani, Homa Ebrahimi, A. Ebrahimi, M. Saadatnia, H. Orooji, A. Chitsaz
Background: Cognitive changes are often reported in Parkinson’s disease (PD). Numerous studies showed that there are changes in the patterns of inflammation when vascular dementia progressed, but the role of inflammation in PD is unknown. Methods: 75 consecutive diagnosed PD patients included. Patients divided into idiopathic PD (n=55) and PDD (n=20) based on DSM–IV criteria for diagnosis of dementia. Serum levels of vascular and inflammatory biomarkers for interleukin-6 (IL-6), high sensitivity-C reactive protein (hs- CRP), soluble intracellular cell adhesion molecule (ICAM-1), soluble vascular cell adhesion molecule (VCAM-1) investigated by ELISA assay and compared between PD and PDD. Result: The significant enhancement of the VCAM-1 only found in serum of PDD compared to PD (56/06 ± 58/16 ng/ml vs. 30/43 ± 38/30, P=0/04), even after adjustment age, gender and hypertension (OR=1/01, P=0/05). Cut-off point of VCAM-1 levels was equal to or greater than as 40/14 ng/ml for differentiating dementia in PD from PD without dementia with sensitivity and specificity were 73%, 64%. Conclusion: PDD patients had significant higher levels of VCAM-1 than PD, suggesting the serum levels of VCAM-1 may be a useful marker for PDD diagnosis. Future studies are needed to investigate possible association betweenVCAM-1 levels in PDD in larger sample size.
背景:帕金森病(PD)的认知改变经常被报道。大量研究表明,当血管性痴呆进展时,炎症模式发生变化,但炎症在PD中的作用尚不清楚。方法:纳入75例连续确诊的PD患者。根据DSM-IV痴呆诊断标准,将患者分为特发性PD (n=55)和PDD (n=20)。ELISA法检测PD和PDD患者血清血管和炎症生物标志物白介素-6 (IL-6)、高敏c反应蛋白(hs- CRP)、可溶性细胞内粘附分子(ICAM-1)、可溶性血管细胞粘附分子(VCAM-1)水平,并进行比较。结果:VCAM-1仅在PDD组血清中较PD组显著升高(56/06±58/16 ng/ml vs. 30/43±38/30,P=0/04),即使调整了年龄、性别和高血压(OR=1/01, P=0/05)。VCAM-1水平等于或大于40/14 ng/ml,区分PD痴呆与PD无痴呆的敏感度和特异度分别为73%和64%。结论:PDD患者血清VCAM-1水平明显高于PD,提示血清VCAM-1水平可作为PDD诊断的有效指标。未来的研究需要在更大的样本量中调查vcam -1水平在PDD中的可能关联。
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引用次数: 3
Vitamin D Deficiency: A Cause of Secondary Lumbar Canal Stenosis - A Case Report 维生素D缺乏:继发性腰椎管狭窄的原因- 1例报告
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000280
S. Goswami, Mukesh Dube
Background: Degenerative lumbar canal stenosis presents with low backache. Ligamentum flavum hypertrophy secondary to vitamin D deficiency causes central canal stenosis. This is a common presentation in obese females residing in North India. Case presentation: We present the case of a young, obese, north Indian 32-year-old female, who had a history of chronic low mild backache, with reduced spine mobility, with MRI lumbosacral scan revealing grade I spondylolisthesis with spondylolysis seen at L4 over L5 and ligamentum flavum and facetal hypertrophy. Further workup showed raised serum parathormone (PTH) and deficient serum 25-OH Vitamin D total levels. Hypovitaminosis D was responsible for the ligamentum flavum hypertrophy and secondary lumbar canal stenosis. She was discharged on Vitamin D replenishment regimen. Conclusions: Vitamin D deficiency is coexistent with low backache, secondary to degenerative lumbar canal stenosis.
背景:退行性腰椎管狭窄表现为腰痛。继发于维生素D缺乏的黄韧带肥大引起中央管狭窄。这是居住在印度北部的肥胖女性的常见表现。病例介绍:我们报告一名年轻,肥胖,印度北部32岁女性的病例,她有慢性轻度腰痛病史,脊柱活动能力降低,腰骶MRI扫描显示I级脊柱滑脱,在L4 L5和黄韧带和面肥大处可见脊柱滑脱。进一步的检查显示血清甲状旁腺激素(PTH)升高,血清25-OH维生素D总水平不足。维生素D缺乏症是导致黄韧带肥大和继发性腰椎管狭窄的主要原因。她通过补充维生素D疗法出院。结论:维生素D缺乏与腰痛并存,继发于退行性腰椎管狭窄。
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引用次数: 0
Finding Markers in Amyotrophic Lateral Sclerosis Diagnosis 寻找肌萎缩侧索硬化诊断标志物
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000239
B. Hern, Ez
Amyotrophic Lateral Sclerosis (ALS) is an uncommon illness, it is caused by moto neuron degeneration, upper, lower and bulbar muscles are affected. Some research also report degeneration in no motor structures of the brain. We proposed to evaluate Electrophysiological and Image techniques like markers in ALS diagnosis and correlate these results. During January 2015 to January 2017, twenty patients with ALS diagnosis and twenty health subjects were evaluated. Sensory and by motor nerve conduction studies, Electromyography, Somato- Sensory Evoked Potentials were done to the patients. 3T MRI image were obtained from the patients and from the health subjects. Post processing MRI techniques like voxel based morphometric, diffusion techniques and corticospinal tract and corpus callosum tractography were applied at different levels of the brain structures. Nerve conduction study was positive in 90% of the patients, SSEP were positive in 60% and EMG abnormalities were observed in 100% of patients. Anatomic MRI was positive in 50% of the patients. Fractional Anisotropy was reduced in ALS group in comparison with health group, more significant at cortex, internal capsule and corpus callosum. Fibers number of cortico-spinal tract and corpus callosum were diminished in ALS group in relation to health group. Also grey and white matter were reduce in ALS group, in areas such as: cingulate gyrus, anterior portion of occipital lobe, left caudate and putamen nucleus, right claustrum nucleus, lower and medium temporal gyrus bilateral, left precentral and post-central gyrus, corpus callosum, corticospinal tract, bilateral internal capsule, bilateral optical radiation, bilateral lower longitudinal fascicle, bilateral hippocampal fimbriae, bilateral radiated corona and pontocerebellar fibers. Electrophysiological studies confirmed ALS diagnosis in 100% of cases. MRI methods show abnormalities in motor and not motor structures of brain in ALS patients. They could be markers in early ALS diagnostic.
肌萎缩性侧索硬化症(ALS)是一种罕见的疾病,它是由运动神经元变性引起的,上、下、球肌均受到影响。一些研究也报告了大脑无运动结构的退化。我们建议评估电生理和图像技术如标记物在ALS诊断中的作用,并将这些结果联系起来。2015年1月至2017年1月,对20例ALS诊断患者和20例健康受试者进行评估。对患者进行感觉及运动神经传导、肌电图、躯体-感觉诱发电位等检查。分别对患者和健康人进行3T MRI成像。基于体素的形态测量、扩散技术、皮质脊髓束和胼胝体束成像等后处理MRI技术在脑结构的不同层次上应用。90%的患者神经传导阳性,60%的患者SSEP阳性,100%的患者肌电图异常。50%的患者解剖MRI呈阳性。与健康组相比,肌萎缩侧索硬化症组的各向异性分数降低,在皮质、内囊和胼胝体上更为显著。肌萎缩侧索硬化症组皮质脊髓束和胼胝体纤维数量较健康组减少。ALS组脑灰质和白质减少的区域包括:扣带回、枕叶前部、左侧尾状核和壳核、右侧闭状核、双侧颞下回和中回、左侧中央前回和中央后回、胼胝体、皮质脊髓束、双侧内囊、双侧光辐射、双侧下纵束、双侧海马纤维、双侧辐射冠和桥小脑纤维。电生理研究100%证实了ALS的诊断。MRI方法显示ALS患者的大脑运动和非运动结构异常。它们可能是早期ALS诊断的标志。
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引用次数: 0
Neurophysiological and Images Studies in a Case of Foreign Accent Syndrome Secondary to Multiple Sclerosis 多发性硬化症继发外国口音综合征1例的神经生理学和影像学研究
Pub Date : 2018-01-01 DOI: 10.21767/2171-6625.1000240
B. Hern, Ez
Foreign Accent Syndrome (FAS) is rare speech disorder that affects about 80 persons in all the world, it´s a rare speech disorder characterized by segmental (abnormality in time of pronunciation of vocal and consonant) and prosodical deficits (abnormality in rhythm and intonation of words and phrases) without abnormal grammatical abnormalities, the patient´s speech resembles a nonnative accent. The most of cases present like an acquired abnormality of the speech due to a damage of the central nervous system. It could be secondary to neurologic or psychogenic disturbances. We present a case of FAS. It was a 65 years old woman with diagnosis of Multiple Sclerosis. Neurophysiological and Image tests were done to her. Visual Evoked Potential showed abnormality of nerve conduction on visual system due to demyelinating, Somatosensory Evoked Potential showed abnormality of nerve conduction on somatosensory way at left parietal area, probably due to demyelinating. EEG revealed paroxysmal activity on bilateral Fronto-Centro-Temporal regions, a peak of energy on theta band in all of derivation, predominantly in lower Frontal and Temporal regions and increase of absolute and relative power as well as mean frequency of theta band on lower Frontal and Temporal regions. 3T MRI showed hyperintense yuxtaxial image in cortical regions, hypointense images in brain stem, demyelinating plaques on left Frontal, Parietal and Temporal subcortical areas and in periventricular regions. We conclude that FAS is a rare disorder, it could be associated to Multiple Sclerosis.
外国口音综合征(Foreign Accent Syndrome, FAS)是一种罕见的语言障碍,全世界约有80人患有这种疾病,它是一种罕见的语言障碍,其特征是分节性(语音和辅音的发音时间异常)和韵律性缺陷(单词和短语的节奏和语调异常),但没有异常的语法异常,患者的语言类似于非母语口音。大多数病例表现为由于中枢神经系统损伤而获得的语言异常。可能是继发于神经或心理障碍。我们提出一例FAS。这是一位65岁的女性,被诊断为多发性硬化症。对她进行了神经生理和影像学检查。视觉诱发电位表现为脱髓鞘所致视觉神经传导异常,体感诱发电位表现为左侧顶叶区体感神经传导异常,可能是脱髓鞘所致。脑电图显示双侧额-中-颞区出现阵发性活动,各衍生波θ波段能量均出现峰值,以额下和颞下为主,额下和颞下的θ波段绝对功率和相对功率及平均频率均增加。3T MRI显示皮层区尾轴高信号,脑干低信号,左侧额叶区、顶叶区、颞叶皮质下区及脑室周围区出现脱髓鞘斑块。我们得出结论,FAS是一种罕见的疾病,它可能与多发性硬化症有关。
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引用次数: 3
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Journal of neurology and neuroscience
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