Enhanced classical complement pathway activation and altered phagocytosis signaling molecules in human epilepsy.

Enhanced classical complement pathway activation and altered phagocytosis signaling molecules in human epilepsy. Exp Neurol. 2017 Jun 07;: Authors: Wyatt SK, Witt T, Barbaro NM, Cohen-Gadol AA, Brewster AL Abstract Microglia-mediated neuroinflammation is widely associated with seizures and epilepsy. Although microglial cells are professional phagocytes, less is known about the status of this phenotype in epilepsy. Recent evidence supports that phagocytosis-associated molecules from the classical complement (C1q-C3) play novel roles in microglia-mediated synaptic pruning. Interestingly, in human and experimental epilepsy, altered mRNA levels of complement molecules were reported. Therefore, to identify a potential role for complement and microglia in the synaptodendritic pathology of epilepsy, we determined the protein levels of classical complement proteins (C1q-C3) along with other phagocytosis signaling molecules in human epilepsy. Cortical brain samples surgically resected from patients with refractory epilepsy (RE) and non-epileptic lesions (NE) were examined. Western blotting was used to determine the levels of phagocytosis signaling proteins such as the complements C1q and C3, MerTK, Trem2, and Pros1 along with cleaved-caspase 3. In addition, immunostaining was used to determine the distribution of C1q and co-localization to microglia and dendrites. We found that the RE samples had significantly increased protein levels of C1q (p=0.034) along with ...
Source: Experimental Neurology - Category: Neurology Authors: Tags: Exp Neurol Source Type: research

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ConclusionsThe findings of this study demonstrate that the proposed prediction strategy is suitable for the prediction of seizure onset.
Source: Journal of Neuroscience Methods - Category: Neuroscience Source Type: research
Authors: Scheffer IE, Liao J Abstract [Box: see text]. PMID: 31601119 [PubMed - as supplied by publisher]
Source: Epilepsy Currents - Category: Neurology Tags: Epilepsy Curr Source Type: research
Publication date: December 2019Source: Molecular Genetics and Metabolism Reports, Volume 21Author(s): Remi Stevelink, Faith Pangilinan, Floor E. Jansen, Kees P.J. Braun, International League Against Epilepsy Consortium on Complex Epilepsies, Anne M. Molloy, Lawrence C. Brody, Bobby P.C. KoelemanAbstractAltered vitamin B6 metabolism due to pathogenic variants in the gene PNPO causes early onset epileptic encephalopathy, which can be treated with high doses of vitamin B6. We recently reported that single nucleotide polymorphisms (SNPs) that influence PNPO expression in the brain are associated with genetic generalized epilep...
Source: Molecular Genetics and Metabolism Reports - Category: Genetics & Stem Cells Source Type: research
Purpose of review Although ketogenic diet therapies (KDTs) were first developed as a treatment for patients with epilepsy, their potential efficacy for a broader number of neurologic and nonneurologic disorders and conditions has been explored over the last 10–20 years. The most recent clinical trials of KDTs in adults have highlighted common methodological aspects that can either facilitate or thwart appropriate risk/benefit analyses, comparisons across studies, and reproducibility of findings in future studies. Recent findings Recent evidence suggests that KDTs not only improve seizure control, but also improv...
Source: Current Opinion in Clinical Nutrition and Metabolic Care - Category: Nutrition Tags: NUTRITION AND PHYSIOLOGICAL FUNCTION: Edited by Labros S. Sidossis and Annemie M.W. Schols Source Type: research
Decreased in BEN was associated with the intrinsic alertness RT and phasic alertness in patients with rTLE. The abnormal FC in brain regions with altered entropy suggests reconstruction of brain functional connectivity. AbstractBackgroundTo date, no functional MRI (fMRI) studies have focused on brain entropy in right temporal lobe epilepsy (rTLE) patients. Here, we characterized brain entropy (BEN) alterations in patients with rTLE using resting ‐state functional MRI(rs‐fMRI) and explored the relationship between BEN and alertness.MethodThirty ‐one rTLE patients and 33 controls underwent MRI scanning to investigate d...
Source: Brain and Behavior - Category: Neurology Authors: Tags: ORIGINAL RESEARCH Source Type: research
Howlett Cannabinoid receptor interacting protein 1a (CRIP1a) is an important CB1 cannabinoid receptor-associated protein, first identified from a yeast two-hybrid screen to modulate CB1-mediated N-type Ca2+ currents. In this paper we review studies of CRIP1a function and structure based upon in vitro experiments and computational chemistry, which elucidate the specific mechanisms for the interaction of CRIP1a with CB1 receptors. N18TG2 neuronal cells overexpressing or silencing CRIP1a highlighted the ability of CRIP1 to regulate cyclic adenosine 3′,5′monophosphate (cAMP) production and extracellular...
Source: Molecules - Category: Chemistry Authors: Tags: Review Source Type: research
Authors: Velez-Ruiz N Abstract [Box: see text]. PMID: 31597457 [PubMed - as supplied by publisher]
Source: Epilepsy Currents - Category: Neurology Tags: Epilepsy Curr Source Type: research
CONCLUSION Our results suggest that ghrelin acts as an anticonvulsant, obestatin acts as a proconvulsant, and VIP has dual action on epilepsy. Receptors of those neuropeptides may be promising targets for epilepsy treatment.RESUMO OBJETIVO Nosso objetivo foi explorar os efeitos dos neuropept ídeos grelina, obestatina e peptídeo intestinal vasoativo (VIP) nas convulsões e concentrações plasmáticas de biomarcadores neuroinflamatórios, incluindo peptídeo relacionado ao gene da calcitonina (CGRP), substância-P (SP) e interleucina-1 beta (IL-1 β ) em convuls &ot...
Source: Revista da Associacao Medica Brasileira - Category: General Medicine Source Type: research
Journal of Neurotrauma, Ahead of Print.
Source: Journal of Neurotrauma - Category: Neurology Authors: Source Type: research
AbstractIn recent years, many studies have focused on autophagy, an evolutionarily conserved mechanism that relies on lysosomes to achieve cellular metabolic requirements and organelle turnover, and revealed its important role in animal models of traumatic injury. Autophagy is a double ‐edged sword. Appropriate levels of autophagy can promote the removal of abnormal proteins or damaged organelles, while hyperactivated autophagy can induce autophagic apoptosis. However, recent studies suggest that autophagic flux seems to be blocked after traumatic brain injury (TBI), which contr ibutes to the apoptosis of brain cells. In...
Source: Journal of Neurochemistry - Category: Neuroscience Authors: Tags: ORIGINAL ARTICLE Source Type: research
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