Reviews |
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Micaela Mitolo, Annalena Venneri, Iain D. Wilkinson, Basil Sharrack
Cognitive impairment is a common clinical feature of multiple sclerosis (MS) at both the earlier and later stages of the disease, and has a significant impact on patients' functional status and quality of life. The need to address this deficit should be taken into account in clinical practice and research studies.
Original Articles |
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E. De Bruijn, S.W.R. Nijmeijer, P.A. Forbes, J.H.T.M. Koelman, F.C.T. van der Helm, M.A.J. Tijssen, R. Happee
The preferred treatment for cervical dystonia (CD) is injection of botulinum toxin in the dystonic muscles. Unfortunately, in the absence of reliable diagnostic methods it can be difficult to discriminate dystonic muscles from healthy muscles acting in compensation. We investigated if dystonic muscle activation patterns could be identified in cervical dystonia patients during a harmonized isometric contraction task. Furthermore, we investigated whether dystonia worsens at higher levels of voluntary contraction, which might further improve the identification of dystonic muscle activity.
Peter Sörös, Michael Harnadek, Treena Blake, Vladimir Hachinski, Richard Chan
A considerable number of patients with transient ischemic attack suffer from cognitive impairment, even after recovery of focal neurological deficits. In particular, executive functions such as working memory, abstraction, reasoning, verbal fluency and cognitive flexibility are impaired in these patients. The purpose of the present study was to explore the nature and prevalence of cognitive impairment in a series of patients with transient ischemic attack and minor stroke.
Juan Zhao, Zhaoxia Wang, Daojun Hong, He Lv, Wei Zhang, Juanjuan Chen, Yun Yuan
GNE myopathy is an autosomal recessive distal myopathy caused by biallelic mutation in the GNE gene. It shows great genetic heterogeneity among different ethnic groups. In this study, we summarized the mutational spectrum and clinical profiles in 35 unrelated GNE myopathy patients from mainland China. Molecular analysis revealed 16 novel (p.G47D, p.F66Y, p.E173A, p.Y186H, p.R246L, p.R263*, p.R306*, p.A366D, p.V512M, p.C520Y, p.G545R, p.G548S, p.V622G, p.A638P, IVS2 + 1G > A and c.2112delC) and 13 reported mutations.
Qiang Gao, Ying Fan, Lu-Yan Mu, Lan Ma, Zhi-Qiang Song, Yi-Na Zhang
Glial cell activation and endothelial dysfunction are thought to contribute to the pathophysiology of cerebral small vessel disease (SVD). The purpose of the present study was to determine if levels of S100B, a protein highly expressed in glial cells, and asymmetric dimethylarginine (ADMA), which promotes endothelial dysfunction, are elevated in the serum of patients with SVD and correlate with their cognitive functioning.
Robert W. Motl, Elizabeth A. Hubbard, Niranjana Sreekumar, Nathan C. Wetter, Bradley P. Sutton, Lara A. Pilutti, Jacob J. Sosnoff, Ralph H.B. Benedict
Walking dysfunction is common in multiple sclerosis (MS). The thalamus and basal ganglia seemingly have important associations with walking performance. The contribution of these subcortical gray matter (SGM) structures for walking dysfunction is poorly understood in MS.
Prabodh Sadana, Lucy Coughlin, Jamie Burke, Robert Woods, Alexander Mdzinarishvili
The use of neuroprotective strategies to mitigate the fatal consequences of ischemic brain stroke is a focus of robust research activity. We have previously demonstrated that thyroid hormone (T3; 3,3′,5-triiodo-l-thyronine) possesses neuroprotective and anti-edema activity in pre-stroke treatment regimens when administered as a solution or as a nanoparticle formulation. In this study we have extended our evaluation of thyroid hormone use in animal models of brain stroke. We have used both transient middle cerebral artery occlusion (t-MCAO) and permanent (p-MCAO) models of ischemic brain stroke.
Megan A. Hird, Kristin A. Vesely, Leah E. Christie, Melissa A. Alves, Jitphapa Pongmoragot, Gustavo Saposnik, Tom A. Schweizer
Most guidelines recommend that patients should refrain from driving for at least one month after stroke. Despite these guidelines, and the fact that patients post-stroke may be at an increased risk for driving impairment, many patients report resuming driving within the acute phase of injury. The aim of this study was to investigate the driving performance of patients with acute mild stroke.
Amandine Moroso, Mathilde S.A. Deloire, Aurélie Ruet, Jean-Christophe Ouallet, Romain Casey, Bruno Brochet
The independent prognostic value of cerebrospinal fluid analysis in multiple sclerosis is not established.
Jian Qu, Zhi-Quan Yang, Ying Zhang, Chen-Xue Mao, Zhi-Bin Wang, Xiao-Yuan Mao, Bo-Ting Zhou, Ji-Ye Yin, Hui He, Hong-Yu Long, Jia-E Gong, Bo Xiao, Hong-Hao Zhou, Zhao-Qian Liu
ATP1A2 and ATP1A3 are genes that code for catalytic subunits of Na/K-ATPases, which play important roles in the basal electrophysiological states of nerve cells. The aim of this study was to investigate whether genetic polymorphisms of ATP1A2 and ATP1A3 influence susceptibility to genetic generalized epilepsies (GGEs) and the efficacy of anti-epileptic drugs in a Chinese population.
Xiao Liu, Yuehuan Zuo, Wei Sun, Wei Zhang, He Lv, Yining Huang, Jiangxi Xiao, Yun Yuan, Zhaoxia Wang
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is an inherited small artery disease caused by NOTCH3 gene mutation. Here we report clinical, pathological and genetic profiles of 29 newly-diagnosed CADASIL patients, evaluation of the CADASIL scale in Chinese CADASIL patients, and reanalysis of all reported mainland Chinese patients with identified NOTCH3 gene mutation. We found two novel mutations (p.C134G and p.C291Y) and 13 reported NOTCH3 mutations in the newly-diagnosed group.
Ken Ikeda, Yasuo Iwasaki, Ryuji Kaji
High-dose of methylcobalamin promotes nerve regeneration in rats with acrylamide neuropathy. A double-blind controlled trial suggested that high-dose methylcobalamin could increase compound muscle action potentials in patients with amyotrophic lateral sclerosis (ALS). A large-scale extended period human trial is now on-going in ALS ( Clinicaltrial.gov NCT00444613 ). We attempted to study whether high-dose methylcobalamin can improve symptoms or retard progression of motor dysfunction in the wobbler mouse model of ALS.
Danielle C. Smith, Masharip Atadzhanov, Mwila Mwaba, Leslie Jacqueline Greenberg
Spinocerebellar ataxia type 7 (SCA7) is an inherited neurodegenerative disease caused by the expansion of a CAG repeat within the ataxin 7 gene, leading to a pathogenic polyglutamine tract within the ataxin 7 protein. SCA7 patients suffer from progressive cerebellar ataxia and macular degeneration. SCA7 is considered to be rare, although founder effects have been reported in South Africa, Scandinavia and Mexico. The South African SCA7-associated haplotype has not been investigated in any other populations, and there have been limited reports of SCA7 patients from other African countries.
Qifu Li, Weifang Cao, Xiaoping Liao, Zhibin Chen, Tianhua Yang, Qiyong Gong, Dong Zhou, Cheng Luo, Dezhong Yao
Altered functional connectivity has been associated with the influence of epileptic activity. Abnormalities in connectivity, particularly in dorsal attention (DAN), salience (SN) and default mode (DMN) networks, might contribute to the loss of consciousness during seizures and cognitive deficits in patients with children absence epilepsy (CAE). The objective of the present study was to identify whether the functional network connectivity (FNC) is changed between patients with CAE and healthy controls.
Carole Henry, Fanny Jouan, Thomas De Broucker
JC virus (JCV) infection of glial cells can lead to progressive multifocal leukoencephalopathy (PML) in immunocompromised patients. A newly described phenotype of the infection is infection of neurons. This distinct clinical and radiological syndrome is named JCV granule cell neuronopathy, characterized by exclusive or predominant cerebellar atrophy. We report the clinical and radiological longitudinal findings of 5 HIV-infected patients referred to us between September 2004 and November 2011 who exhibited JCV granule cell neuronopathy (4 probable cases and 1 possible).
Agathe Bridoux, Alain Créange, Aude Sangare, Samar S. Ayache, Hassan Hosseini, Xavier Drouot, Jean-Pascal Lefaucheur
To compare the beneficial effect of nap versus rest on the recovery of motor evoked potentials (MEPs) after a fatiguing exercise performed in patients with multiple sclerosis (MS) and healthy controls.
Tae-Won Kim, Sung-Woo Jung, In-Uk Song, Jaseong Koo, Hyun Seok Choi, Kwang-Soo Lee, Jeong-Wook Park, Hun-Jun Park, Joong-Seok Kim
Increased left atrial volume is an independent predictive factor of first ischemic stroke and other cardiovascular events in patients with non-valvular atrial fibrillation (NVAF). However, correlations between left atrial dilatation and ischemic stroke severity or ischemic lesion pattern have not been previously reported. The aim of this study was to evaluate whether left atrial enlargement is associated with worse initial stroke severity and lesion patterns.
Franziska Wickmann, Caspar Stephani, Dirk Czesnik, Florian Klinker, Charles Timäus, Leila Chaieb, Walter Paulus, Andrea Antal
The present study aimed to investigate the efficacy of repetitive cathodal direct current stimulation (rctDCS) over the visual cortex as a prophylactic treatment in patients with menstrual migraine. 20 female patients were recruited in this double-blind, placebo-controlled study and were assigned to receive either cathodal or sham stimulation. Over 3 menstrual cycles, tDCS with 2 mA intensity and 20 min duration was applied to the visual cortex of the patients, in 5 consecutive sessions 1–5 days prior to the first day of their menstruation.
Letters to the Editor |
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Petra Bago Rožanković
Steroid-responsive autoimmune encephalopathy associated with autoimmune thyroiditis (SREAT), often called Hashimoto encephalopathy, is an uncommon neurological syndrome which can rarely be presented with the movement disorders. We describe a case with a progressive type of SREAT, primarily manifesting itself in the choreo-athetotic movements associated with dystonia and myoclonus.
Chiara Cerami, Patrizia Tarantino, Chiara Cupidi, Grazia Annesi, Vincenzina Lo Re, Monica Gagliardi, Tommaso Piccoli, Aldo Quattrone
The Marinesco–Sjögren syndrome is a rare autosomal recessive disorder whose hallmark clinical features are cataracts, cerebellar ataxia, progressive myopathy and a various degree of delayed motor and/or mental development (MSS; OMIM 248800 ).
Andrey Bragin, Apostolos Safouris, Bram Bourgonjon, Alex Michotte, Nikos Triantafyllou, Georgios Tsivgoulis
While in immunocompetent patients the butterfly appearance of a brain tumor is highly suggestive of glioblastoma multiforme, primary CNS lymphoma (PCNSL) can mimic this pattern in immunocompromised patients. We present a case of PCNSL proven by brain biopsy in a patient with acquired immunodeficiency syndrome (AIDS).
Tiago Teodoro, Patrícia Pita Lobo, João Ferreira, Rita Sousa, Sofia Reimão, Rita Peralta, Luísa Albuquerque, Joaquim J. Ferreira
We herein present the first report of Parkinsonism as a consequence of nonketotic hyperglycemia. A 68 year-old woman with a previous history of diabetes mellitus (non-insulin treated), complicated with sensory-motor mixed polyneuropathy, was admitted due to chorea of subacute onset (2 weeks duration). It was generalized, but markedly asymmetric, being more severe on the left side of her body. Observation also showed left facial paresis and hemiparesis and socks-pattern hypoesthesia for all sensory modalities.
Karina Carvalho Donis, Eduardo Preusser Mattos, André Anjos Silva, Gabriel Vasata Furtado, Maria Luiza Saraiva-Pereira, Laura Bannach Jardim, Jonas Alex Saute
Spinocerebellar ataxia type 7 (SCA7) is an autosomal dominant neurodegenerative disorder characterized by progressive cerebellar ataxia associated with cone-rod and retinal dystrophy [1]. SCA7 is caused by a CAG repeat expansion (from 37 to 460 repeats) in the coding region of ATXN7 gene [1–3]. Expansion of the polyQ tract in the protein ataxin-7 leads to its accumulation in neuronal nuclear inclusions, and to selective neuronal and photoreceptor degeneration.
Rok Berlot, Milica Gregorič Kramberger, Jurij Dreo, Zvezdan Pirtošek, Maja Kojović
Traditionally, functional neurological symptoms have been thought of as arising from "the mind", but recent neurobiological advances are leading to their reappraisal. Challenging the split between "organic" and "psychogenic", we present a patient with clinical features of a clear functional movement disorder, but with a mass lesion possibly associated with the presentation.
Júlia Miró, Sònia Jaraba, Jaume Mora, Oriol Puig, Sara Castañer, Laura Rodriguez-Bel, Mila Santurino, Gerard Plans, Mercè Falip
Startle epilepsy has been included as one syndrome of reflex epilepsies in the last classification of the International League Against Epilepsy (ILAE) [1]. Startle-induced seizures (SISs) are often very resistant to antiepileptic drugs and are disabling. SISs consist of brief (up to 30 s) symmetrical or asymmetrical tonic posturing of the limbs. The triggers are unexpected somatosensory, or auditory stimuli or even visual stimuli. Falling due to SISs restricts the patients' daily activities [2]. Magnetic resonance imaging (MRI) often shows abnormalities suggestive of prenatal, perinatal or postnatal insults that predominate over the sensorimotor cortex [3].
Yosuke Miyaji, Yuichi Kawabata, Hideto Joki, Shunsuke Seki, Kentaro Mori, Tomoya Kamide, Akira Tamase, Motohiro Nomura, Yoshihisa Kitamura, Fumiaki Tanaka
Arterial spin-labeling (ASL) is a non-contrast-enhanced sequence of magnetic resonance imaging (MRI) to evaluate cerebral perfusion. ASL has been widely used in cerebrovascular diseases [1]. Previously, we reported the use of ASL for the diagnosis of late seizure after stroke [2]. Here we report a first case of ASL in a patient with early seizure after stroke.
Nobuyuki Ishii, Hitoshi Mochizuki, Sayaka Moriguchi-Goto, Masayuki Shintaku, Yujiro Asada, Akitoshi Taniguchi, Kazutaka Shiomi, Masamitsu Nakazato
Influenza-associated encephalopathy (IAE), which can lead to acute necrotizing encephalopathy (ANE), often appears as low-density areas (LDAs) in the thalamus bilaterally on brain CT. In addition, histopathological examination of LDAs reveals necrotic tissue compatible with ANE [1]. In previous studies, most patients with IAE were under 5 years of age; adult-onset IAE is globally very rare [2]. Here, we present the first case of elderly-onset IAE–ANE confirmed by autopsy. The study protocol was approved by the Ethics Committee of the University of Miyazaki.
Atsuhiko Sugiyama, Setsu Sawai, Shoichi Ito, Hiroki Mukai, Minako Beppu, Tomokatsu Yoshida, Satoshi Kuwabara
Alexander disease (AD) is pathologically characterized by accumulation of Rosenthal fibers, which comprise glial fibrillary acidic protein (GFAP) and αB-crystalline and heat shock protein 27 in the cytoplasm of perivascular and subpial astrocyte end feet. Based on age of onset, three forms of AD, caused by GFAP mutation, are recognized: infantile, juvenile, and adult [1,2]. Following GFAP identification and diagnostic magnetic resonance imaging (MRI), cases of adult-onset AD (AOAD) are being described with increasing frequency.
Moussa A. Chalah, Samar S. Ayache, Naji Riachi, Rechdi Ahdab
Following a right prerolandic stroke, a 76 year old woman with bilateral upper extremity essential tremor (ET) recovered permanently from the latter contralaterally to the affected hemisphere. The ischemic stroke likely interrupted the cortical component of the ET network. Given the magnitude of neuronal loss, post-stroke cortical reorganization was unable to restore this important component of the ET network, accounting for the permanent nature of ET suppression.
Carlos R. Camara-Lemarroy, Miguel A. Cruz-Moreno, Rafael N. Gamboa-Sarquis, Kiber A. Gonzalez-Padilla, Hector E. Tamez-Perez, Dionicio A. Galarza-Delgado
Dear Editor: Goodpasture's syndrome (GS) is a rare autoimmune disease that is mediated by anti-glomerular basement membrane (anti-GBM) antibodies. It is responsible for 5% of all cases of glomerulonephritis in adults and results in acute renal failure in about half of patients if not treated promptly with immunosuppressive drugs and plasma exchange [1,2]. GS is characterized by rapidly progressive glomerulonephritis and occasionally by pulmonary hemorrhage, induced by antibody binding to glomerular and lung basement membrane [1,2].
Lena-Alexandra Beume, Alexander Klingler, Matthias Reinhard, Wolf D. Niesen
A 55-year-old female presented with olfactory hallucinations of "burned hair" shortly before developing a sensorimotor hemiparesis of the left side and visuospatial neglect. On admission, her National Institutes of Health Stroke Scale score (NIHSS) was 11; her vital signs and the remainder of the physical exam were unremarkable. Cerebral MRI (1.5 Tesla, Siemens Avanto) showed an ischemic lesion with restricted diffusion involving about 20% of the right middle cerebral artery (MCA) territory. The infarcted area included the posterior insula and pre- and postcentral gyrus (Fig. 1A) and resulted from an occlusion of the M2 segment of the right MCA.
Zen Kobayashi, Miho Akaza, Hiroshi Endo, Yoshiyuki Numasawa, Hiroyuki Tomimitsu, Shuzo Shintani
Although hemiparesis due to an ipsilateral brain lesion is rare in clinical practice, various pathomechanisms related to this condition have been reported [1–7]. Above all, deterioration of pre-existing hemiparesis due to an ipsilateral brain infarction after a contralateral stroke has been reported in two studies [1,2]. Ago's patient [1], who had left hemiparesis associated with right putaminal hemorrhage, presented with deterioration of the left hemiparesis related to left corona radiata infarction.
Errata |
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Ai-Min Wu, Wen-Fei Ni, Zhe-Yu Huang, Qing-Long Li, Jian-Bo Wu, Hua-Zi Xu, Li-Hui Yin
Some typo-graphical errors have been found in the above-mentioned paper. Fig. 8 was missed, and Fig. 9 was mistakenly marked as Fig. 8. The corrected figures are as follows:...