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Neuroinflammation may be central in epileptogenesis. In this study we analysed inflammatory reaction markers in brain tissue of Mesial Temporal Lobe Epilepsy with Hippocampal Sclerosis (MTLE-HS) patients. TLR4, IL-1β and IL-10 gene expression as well as the presence of activated HLA-DR+ microglia was evaluated in 23 patients and 10 cadaveric controls. Inflammation characterized by the presence of HLA-DR microglia and TLR4, IL-1β overexpression was evident in hippocampus and anterior temporal cortex of MTLE-HS patients. Anti-inflammatory IL-10 was also overexpressed in MTLE-HS patients. Our results show that hippocampal neuroinflammation extends beyond lesional limits, as far as the anterior temporal cortex.
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http://dx.doi.org/10.1016/j.jneuroim.2017.10.014 | DOI Listing |
Epilepsy Behav
October 2025
Center for Applied Neuroscience (CeNAp), Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil; Center for Epilepsy of Santa Catarina Sate, University Hospital, UFSC, Florianópolis, SC, Brazil; Neurology Division, Internal Medicine Department, UFSC, Florianópolis, SC, Brazil.
Background: Hippocampal sclerosis (HS) is the most frequent neuropathological finding in mesial temporal lobe epilepsy (MTLE-HS), leading to hippocampal atrophy due to neuronal loss and gliosis. Anxiety and depression are highly prevalent in drug-resistant MTLE-HS patients, but their neuroanatomical correlates remain unclear. This study investigates the independent association between affective symptoms and hippocampal subfield volumes in unilateral MTLE-HS.
View Article and Find Full Text PDFEpilepsia Open
July 2025
Department of Neurology, University of Campinas (UNICAMP), Campinas, SP, Brazil.
Objective: We aimed to investigate the frequency of neuronal surface and intracellular antibodies in individuals with long-term epilepsy and the associated clinical and laboratory characteristics.
Methods: We tested sera from 223 patients with epilepsy without signs of autoimmune encephalitis and 12 patients with epilepsy and a subacute onset of additional neurological symptoms. All had epilepsy lasting at least one year.
J Clin Med
May 2025
Department of Neurology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
: Hippocampal sclerosis (HS) is a hallmark of mesial temporal lobe epilepsy (MTLE). However, genetic studies on MTLE patients with HS (MTLE-HS) remain limited, especially in East Asian populations. This study aimed to identify genetic variants associated with MTLE-HS and elucidate their biological relevance through integrative genomic and transcriptomic analyses.
View Article and Find Full Text PDFIdeggyogy Sz
May 2025
Department of Neurology, Haseki Research and Training Hospital, Health Sciences University, Istanbul, Turkey.
Background And Purpose: The role of synaptic dysfunction in focal epilepsy of unknown cause is not well understood. Neurogranin is a post-synaptic protein used as a biomarker of synaptic disintegration in patients with dementia.
Methods: To evaluate the association between synaptic loss, cognitive impairment and seizure activity in epilepsy, we collected sera of 51 patients with focal epilepsy of unknown cause, 26 with frontal lobe epilepsy (FLE) and 25 with mesial temporal lobe epilepsy with hippocampal sclerosis (MTLEHS), and 25 healthy controls.
Acta Epileptol
August 2024
Department of Neurology, West China Hospital, Sichuan University, Chengdu , Sichuan, 610041, China.
Background: There is a lack of further exploration of the epileptogenic network of specific types of epilepsy, such as unilateral hippocampal sclerosis (HS), and there is an urgent need to find exact evidence to confirm the consistency of its brain network changes.
Methods: We enrolled 22 mesial temporal lobe epilepsy with hippocampal sclerosis (mTLE-HS) patients to compare the differences in brain activity between 22 healthy controls (HCs) and them. Resting-state electroencephalography (EEG) was also measured.