Read by QxMD icon Read


Theresa Scholl, Angelika Mühlebner, Gerda Ricken, Victoria Gruber, Anna Fabing, Sharon Samueli, Gudrun Gröppel, Christian Dorfer, Thomas Czech, Johannes A Hainfellner, Avanita S Prabowo, Roy J Reinten, Lisette Hoogendijk, Jasper J Anink, Eleonora Aronica, Martha Feucht
Conventional antiepileptic drugs suppress the excessive firing of neurons during seizures. In drug-resistant patients, treatment failure indicates an alternative important epileptogenic trigger. Two epilepsy-associated pathologies show myelin deficiencies in seizure-related brain regions: Focal Cortical Dysplasia IIB (FCD) and cortical tubers in Tuberous Sclerosis Complex (TSC). Studies uncovering white matter-pathology mechanisms are therefore urgently needed to gain more insight into epileptogenesis, the propensity to maintain seizures, and their associated comorbidities such as cognitive defects...
October 17, 2016: Brain Pathology
Thomas Cloppenborg, Theodor W May, Ingmar Blümcke, Philip Grewe, Lena J Hopf, Thilo Kalbhenn, Margarete Pfäfflin, Tilman Polster, Reinhard Schulz, Friedrich G Woermann, Christian G Bien
INTRODUCTION: Despite the success of epilepsy surgery, recent reports suggest a decline in surgical numbers. We tested these trends in our cohort to elucidate potential reasons. PATIENTS AND METHODS: Presurgical, surgical and postsurgical data of all patients undergoing presurgical evaluation in between 1990 and 2013 were retrospectively analysed. Patients were grouped according to the underlying pathology. RESULTS: A total of 3060 patients were presurgically studied, and resective surgery was performed in 66...
October 5, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
Lasse P Räsänen, Petri Tanska, Mika E Mononen, Eveliina Lammentausta, Štefan Zbýň, Mikko S Venäläinen, Pavol Szomolanyi, Corrinus C van Donkelaar, Jukka S Jurvelin, Siegfried Trattnig, Miika T Nieminen, Rami K Korhonen
The effects of fixed charge density (FCD) and cartilage swelling have not been demonstrated on cartilage mechanics on knee joint level before. In this study, we present how the spatial and local variations of FCD affects the mechanical response of the knee joint cartilage during standing (half of the body weight, 13 minutes) using finite element (FE) modeling. The FCD distribution of tibial cartilage of an asymptomatic subject was determined using sodium ((23)Na) MRI at 7T and implemented into a 3-D FE-model of the knee joint (Subject-specific model, FCD: 0...
September 15, 2016: Journal of Biomechanics
Bo Jin, Jing Wang, Jian Zhou, Shuang Wang, Yuguang Guan, Shuhua Chen
This study aimed to determine the long-term surgical outcome of pharmacoresistant epilepsy caused by focal cortical dysplasia (FCD) and to identify the important predictors of the favorable surgical outcome. The study retrospectively analyzed the data of pharmacoresistant epilepsy patients with histologically proven FCD in our epilepsy center from May 2010 to December 2014. It included 120 patients with a mean follow-up of 34.6 months. Survival analysis and multivariate regression with Cox proportional hazards model were used to evaluate the rate, stability, and predictors of seizure freedom...
September 8, 2016: Journal of Neurology
Ningnannan Zhang, Huaigui Liu, Wen Qin, Bing Liu, Tianzi Jiang, Chunshui Yu
Genetic variations of APOE and KIBRA have been associated with human memory and Alzheimer's disease. APOE and KIBRA can jointly modulate glutamate receptor to influence long-term potentiation; however, their interactions on brain functional connectivity remain unknown. Here, we investigated additive and epistatic interactions between APOE and KIBRA (rs17070145) on brain functional connectivity density (FCD) in 267 healthy young adults. A voxel-based FCD analysis was performed to identify brain regions with significant APOE-KIBRA interaction...
September 12, 2016: Cerebral Cortex
Maura E Ryan
Investigators from the Mayo Clinic, Rochester Minnesota investigated the utility of three-dimensional (3D) double inversion recovery (DIR) sequences in magnetic resonance imaging (MRI) detection of focal cortical dysplasia (FCD) in children and young adults with epilepsy.
April 2016: Pediatric neurology briefs
Ju-Rong Ding, Xin Ding, Bo Hua, Xingzhong Xiong, Qingsong Wang, Huafu Chen
White matter lesions (WMLs) are frequently detected in elderly people. Previous structural and functional studies have demonstrated that WMLs are associated with cognitive and motor decline. However, the underlying mechanism of how WMLs lead to cognitive decline and motor disturbance remains unclear. We used functional connectivity density mapping (FCDM) to investigate changes in brain functional connectivity in 16 patients with ischemic WMLs and 13 controls. Both short- and long-range FCD maps were computed, and group comparisons were performed between the 2 groups...
September 2016: Medicine (Baltimore)
Jonathan M DuBois, Olivier G Rousset, Marie-Christine Guiot, Jeffery A Hall, Andrew J Reader, Jean-Paul Soucy, Pedro Rosa-Neto, Eliane Kobayashi
Metabotropic glutamate receptor type 5 (mGluR5) abnormalities have been described in tissue resected from epilepsy patients with focal cortical dysplasia (FCD). To determine if these abnormalities could be identified in vivo, we investigated mGluR5 availability in 10 patients with focal epilepsy and an MRI diagnosis of FCD using positron-emission tomography (PET) and the radioligand [(11)C]ABP688. Partial volume corrected [(11)C]ABP688 binding potentials (BPND) were computed using the cerebellum as a reference region...
August 30, 2016: Cerebral Cortex
Xiao Dong Zhang, Xiao Lu Jiang, Zhen Cheng, Yan Zhou, Qiang Xu, Zhi Qiang Zhang, Rongfeng Qi, Song Luo, Yan Su Yun, Hui Juan Chen, Xiang Kong, Guang Ming Lu, Long Jiang Zhang
In this study, we seek to explore alterations of coupling between functional connectivity density (FCD) and amplitude of low frequency fluctuation (ALFF) in systemic lupus erythematosus patients without overt neuropsychiatric symptoms (non-NPSLE) by using resting-state functional MR imaging. This study was approved by the institutional ethical review board, and all participants signed written informed consent prior to the study. Twenty six non-NPSLE patients and 35 matched healthy controls underwent resting-state functional MR imaging...
August 30, 2016: Molecular Neurobiology
Huaigui Liu, Hongxu Yu, Yanjun Li, Wen Qin, Lixue Xu, Chunshui Yu, Meng Liang
Working memory (WM) is the active maintenance of currently relevant information that was just experienced or retrieved from long-term memory but no longer exists in the external environment; however, the intrinsic functional organization of the brain underlying human WM performance remains largely unknown. We hypothesize that the intrinsic functional organization of human WM is an energy-efficient system. We tested this hypothesis by analyzing associations between WM performance (reaction times of correct responses) at different task difficulties (2-back and 3-back tasks) and the resting-state functional connectivity density (FCD) and strength (FCS) in 282 healthy young adults...
January 1, 2017: Behavioural Brain Research
Tugba Hirfanoglu, Ayse Serdaroglu, Gokhan Kurt, Atilla Erdem, Irem Capraz, Erhan Bilir, Ozge Vural, Murat Ucar, Ali Yusuf Oner, Baran Onal, Ozgur Akdemir, Ozlem Atay, Ebru Arhan, Kursad Aydin
OBJECTIVE: This study aimed to investigate the efficacy of resective surgery in children with focal lesional epilepsy by evaluating the predictive value of pre- and postsurgical factors in terms of seizure freedom. METHODS: This study included 61 children aged between 2 and 18years who were admitted to the pediatric video-EEG unit for presurgical workup. Each patient was evaluated with a detailed history, video-EEG, neuroimaging, and postsurgical outcomes according to Engel classification to predict postsurgical seizure freedom...
October 2016: Epilepsy & Behavior: E&B
J van Scheppingen, D W M Broekaart, T Scholl, M R J Zuidberg, J J Anink, W G Spliet, P C van Rijen, T Czech, J A Hainfellner, M Feucht, A Mühlebner, E A van Vliet, E Aronica
BACKGROUND: The proteasome is a multisubunit enzyme complex involved in protein degradation, which is essential for many cellular processes. During inflammation, the constitutive subunits are replaced by their inducible counterparts, resulting in the formation of the immunoproteasome. METHODS: We investigated the expression pattern of constitutive (β1, β5) and immunoproteasome (β1i, β5i) subunits using immunohistochemistry in malformations of cortical development (MCD; focal cortical dysplasia (FCD) IIa and b, cortical tubers from patients with tuberous sclerosis complex (TSC), and mild MCD (mMCD))...
2016: Journal of Neuroinflammation
F Irsel Tezer, Farid Xasiyev, Figen Soylemezoglu, Burcak Bilginer, Kader Karli Oguz, Serap Saygi
BACKGROUND: Hippocampal sclerosis (HS) is a common pathology in MTLE, patients may show different surgical outcomes and clinical features. The 2013 ILAE classification subdivides HS into 3 types (HS type 1: severe neuronal loss and gliosis predominantly in CA1 and CA4 regions; - HS type 2: CA1 predominant; HS type 3: CA4 predominant) and includes "gliosis only, as no-HS". The association of clinical and electrophysiological findings with different HS types has not been reported previously in detail...
August 16, 2016: Epilepsy Research
Qian-Quan Sun, Chen Zhou, Weiguo Yang, Daniel Petrus
OBJECTIVE: To examine if mice with focal cortical dysplasia (FCD) develop spontaneous epileptic seizures and, if so, determine the key electroencephalography (EEG) features. METHODS: Unilateral single freeze lesions to the S1 region (SFLS1R) were made in postnatal day 0-1 pups to induce a neocortical microgyrus in the right cortical hemisphere. Continuous 24-h recordings with intracranial EEG electrodes and behavioral tests were performed in adult SFLS1R and sham-control mice to assess neurologic status...
October 2016: Epilepsia
B Schmeiser, T Hammen, B J Steinhoff, J Zentner, A Schulze-Bonhage
OBJECT: The intention of our study was to identify predictive characteristics for long-term seizure control and running down phenomenon after surgical treatment of pharmacoresistant mesiotemporal lobe epilepsy (mTLE) with and without associated cortical dysplasia. MATERIALS AND METHODS: Our study comprises a consecutive series of 458 patients who underwent surgical treatment for intractable mTLE at the Epilepsy Center Freiburg. Data evaluated included semiology, duration and frequency of seizures, results of presurgical diagnostics including video-EEG monitoring, MRI, PET and SPECT as well as postoperative seizure outcome...
October 2016: Epilepsy Research
Hye Eun Kwon, Soyong Eom, Hoon-Chul Kang, Joon Soo Lee, Se Hoon Kim, Dong Seok Kim, Heung Dong Kim
OBJECTIVE: To analyze the clinical presentation and outcomes of surgically treated focal cortical dysplasia (FCD) in children. METHODS: We reviewed 75 cases of confirmed FCD by pathology after resective surgery. We used the pathologic classification proposed by the International League Against Epilepsy and included clinical profile and seizure and neurodevelopmental outcomes in analyses. RESULTS: There were 11 cases of FCD type I, 34 of type IIa, 19 of type IIb, and 11 of type III...
August 30, 2016: Neurology
Xin Chen, Lukang Wang, Bing Chen, Jiong Yue, Gang Zhu, Chunqing Zhang, Shiyong Liu, Hui Yang
Focal cortical dysplasia (FCD) is strongly associated with medically intractable epilepsy. Studies suggest that liver X receptor beta (LXRβ) may participate in the pathogenesis of FCD. The present study investigated the expression pattern of LXRβ in FCD and the distribution of LXRβ in different neural precursor cells. Twenty-five surgical specimens from FCD patients and 11 age-matched control samples from autopsies were included in our study. Protein levels and distribution were detected by western blot, immunohistochemistry, and immunofluorescence staining...
October 2016: Journal of Molecular Neuroscience: MN
Barbara K Robens, Alexander Grote, Julika Pitsch, Susanne Schoch, Carlos Cardoso, Albert J Becker
Tuberous sclerosis (TSC) is a phacomatosis associated with highly differentiated malformations including tubers in the brain. Those are composed of large dysplastic neurons and 'giant cells'. Cortical tubers are frequent causes of chronic seizures and resemble neuropathologically focal cortical dysplasias (FCD) type IIb. Patients with FCDIIb, however, lack additional stigmata of TSC. Mutations and allelic variants of the TSC1 gene have been observed in patients with tubers as well as FCDIIb. Those include hamartin(R692X) and hamartin(R786X), stop mutants frequent in TSC patients and hamartin(H732Y) frequent in FCDIIb...
November 2016: Neurobiology of Disease
Stanislas Lagarde, Francesca Bonini, Aileen McGonigal, Patrick Chauvel, Martine Gavaret, Didier Scavarda, Romain Carron, Jean Régis, Sandrine Aubert, Nathalie Villeneuve, Bernard Giusiano, Dominique Figarella-Branger, Agnès Trebuchon, Fabrice Bartolomei
OBJECTIVES: The study of intracerebral electroencephalography (EEG) seizure-onset patterns is crucial to accurately define the epileptogenic zone and guide successful surgical resection. It also raises important pathophysiologic issues concerning mechanisms of seizure generation. Until now, several seizure-onset patterns have been described using distinct recording methods (subdural, depth electrode), mostly in temporal lobe epilepsies or with heterogeneous neocortical lesions. METHODS: We analyzed data from a cohort of 53 consecutive patients explored by stereoelectroencephalography (SEEG) and with pathologically confirmed malformation of cortical development (MCD; including focal cortical dysplasia [FCD] and neurodevelopmental tumors [NDTs])...
September 2016: Epilepsia
Xiao-Fei Lv, Hua-Wang Wu, Li Tian, Lu-Jun Han, Jing Li, Ying-Wei Qiu, Gui-Hua Jiang, Xue-Lin Zhang, Rong Zhang, Chuan-Miao Xie
There is increasing evidence that cirrhosis may affect functional connectivity among various brain regions in patients prior to onset of overt hepatic encephalopathy (HE). However, most investigators have focused mainly on alterations in functional connectivity strengths, and the changes in functional connectivity density (FCD) are largely unknown. Here, we investigated alterations in resting-state FCD in patients with hepatitis B virus-related cirrhosis (HBV-RC) without overt HE. Totally, 31 patients with HBV-RC without overt HE and 30 age- and sex-matched healthy controls underwent resting-state functional MRI examinations...
2016: BioMed Research International
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"