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Inflammation epilepsy

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https://www.readbyqxmd.com/read/29225544/novel-targets-for-developing-antiseizure-and-potentially-antiepileptogenic-drugs
#1
Dipan C Patel, Karen S Wilcox, Cameron S Metcalf
Epilepsy is a chronic neurological disorder caused by abnormal changes in the functions of neuronal circuits and manifested by seizures. It affects patients of all age, substantially worsens the quality of life for the patients as well as their families, and imposes a huge economic burden on the healthcare system. Historically, efforts for discovering and developing antiseizure therapies have been focused on modulating the functions of receptors, transporters, and enzymes expressed by neurons. These drug development efforts have paid off, as we have over 25 antiseizure drugs available in the clinic...
September 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/29209390/the-mechanism-of-anti-epileptogenesis-by-levetiracetam-treatment-is-similar-to-the-spontaneous-recovery-of-idiopathic-generalized-epilepsy-during-adolescence
#2
Hiroki Kikuyama, Tadahito Hanaoka, Tetsufumi Kanazawa, Yasushi Yoshida, Takafumi Mizuno, Hirotaka Toyoda, Hiroshi Yoneda
Objective: The anti-epileptogenic drug levetiracetam has anticonvulsant and anti-epileptogenesis effects. Synergy between cell death and inflammation can lead to increased levels of apoptosis inhibitory factors and brain-derived neurotrophic factor, aberrant neurogenesis and extended axon sprouting. Once hyperexcitation of the neural network occurs, spontaneous seizures or epileptogenesis develops. This study investigated whether the anti-epileptogenic effect of levetiracetam is due to its alternate apoptotic activity...
November 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/29196444/temporal-analysis-of-hippocampal-ca3-gene-co-expression-networks-in-a-rat-model-of-febrile-seizures
#3
Hatylas Azevedo, Nathália Amato Khaled, Paula Santos, Fernanda Bernardi Bertonha, Carlos Alberto Moreira-Filho
Complex febrile seizures during infancy constitute an important risk factor for epilepsy development. However, little is known about the alterations induced by febrile seizures that may turn the brain susceptible to epileptic activity. In this context, the use of animal models of hyperthermic seizures (HS) could allow the temporal analysis of brain molecular changes that arise after febrile seizures. Here, we investigated temporal changes in hippocampal gene co-expression networks during the development of rats submitted to HS...
November 30, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29194369/elevated-systemic-il-6-levels-in-patients-with-aneurysmal-subarachnoid-hemorrhage-is-an-unspecific-marker-for-post-sah-complications
#4
Shafqat Rasul Chaudhry, Birgit Stoffel-Wagner, Thomas Mehari Kinfe, Erdem Güresir, Hartmut Vatter, Dirk Dietrich, Alf Lamprecht, Sajjad Muhammad
Background: Aneurysmal subarachnoid hemorrhage (aSAH) is still a fatal and morbid disease, although bleeding aneurysms can be secured in almost all cases. Occurrence of post-SAH complications including cerebral vasospasm, delayed cerebral ischemia, hydrocephalus, epilepsy, and infections are the main determinants of clinical outcome. Hence, it is important to search for early predictors for specific post-SAH complications to treat these complications properly. Both cellular and molecular (cytokines) inflammation play a key role after aSAH during the phase of occurrence of post-SAH complications...
December 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29180982/resveratrol-for-easing-status-epilepticus-induced-brain-injury-inflammation-epileptogenesis-and-cognitive-and-memory-dysfunction-are-we-there-yet
#5
REVIEW
Olagide W Castro, Dinesh Upadhya, Maheedhar Kodali, Ashok K Shetty
Status epilepticus (SE) is a medical emergency exemplified by self-sustaining, unceasing seizures or swiftly recurring seizure events with no recovery between seizures. The early phase after SE event is associated with neurodegeneration, neuroinflammation, and abnormal neurogenesis in the hippocampus though the extent of these changes depends on the severity and duration of seizures. In many instances, over a period, the initial precipitating injury caused by SE leads to temporal lobe epilepsy (TLE), typified by spontaneous recurrent seizures, cognitive, memory and mood impairments associated with chronic inflammation, reduced neurogenesis, abnormal synaptic reorganization, and multiple molecular changes in the hippocampus...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29175221/epilepsy-is-a-neurological-and-a-systemic-disorder
#6
REVIEW
Alan W C Yuen, Mark R Keezer, Josemir W Sander
The basic pathophysiology of epilepsy is still not fully understood. Epidemiological evidence for epilepsy seems to suggest that it may not only be the propensity for seizures to occur. The high prevalence of comorbidity and the finding that premature mortality is still increased in those who are in long-term remission, suggest that there is a systemic component to the condition. This systemic component is an additional shared risk factor that can explain an important proportion of the comorbidities of epilepsy as well as how an individual with inactive epilepsy remains at an elevated risk of premature mortality...
November 22, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29164451/the-potential-of-p2x7-receptors-as-a-therapeutic-target-including-inflammation-and-tumour-progression
#7
REVIEW
Geoffrey Burnstock, Gillian E Knight
Seven P2X ion channel nucleotide receptor subtypes have been cloned and characterised. P2X7 receptors (P2X7R) are unusual in that there are extra amino acids in the intracellular C terminus. Low concentrations of ATP open cation channels sometimes leading to cell proliferation, whereas high concentrations of ATP open large pores that release inflammatory cytokines and can lead to apoptotic cell death. Since many diseases involve inflammation and immune responses, and the P2X7R regulates inflammation, there has been recent interest in the pathophysiological roles of P2X7R and the potential of P2X7R antagonists to treat a variety of diseases...
November 21, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/29153613/brain-expression-of-inflammatory-mediators-in-mesial-temporal-lobe-epilepsy-patients
#8
Bárbara Leal, João Chaves, Cláudia Carvalho, Rui Rangel, Agostinho Santos, Andreia Bettencourt, João Lopes, João Ramalheira, Berta M Silva, António Martins da Silva, Paulo P Costa
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...
December 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29134267/complement-in-the-pathogenesis-of-alzheimer-s-disease
#9
REVIEW
B Paul Morgan
The emergence of complement as an important player in normal brain development and pathological remodelling has come as a major surprise to most scientists working in neuroscience and almost all those working in complement. That a system, evolved to protect the host against infection, should have these unanticipated roles has forced a rethink about what complement might be doing in the brain in health and disease, where it is coming from, and whether we can, or indeed should, manipulate complement in the brain to improve function or restore homeostasis...
November 13, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29130506/animal-models-of-acquired-epilepsy-insights-into-mechanisms-of-human-epileptogenesis
#10
Albert J Becker
In many patients who suffer from epilepsies, recurrent epileptic seizures do not start at birth but develop later in life. This holds particularly true for epilepsies with a focal seizure origin including focal cortical dysplasias (FCDs) and temporal lobe epilepsy (TLE). TLE most frequently has its seizure onset in the hippocampal formation. Hippocampal biopsies of pharmacoresistant TLE patients undergoing epilepsy surgery for seizure control most frequently reveal the damage pattern of hippocampal sclerosis, i...
November 12, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/29115438/astragaloside-iv-attenuates-penicillin-induced-epilepsy-via-inhibiting-activation-of-the-mapk-signaling-pathway
#11
Xingming Zhu, Yang Chen, Yuping Du, Qi Wan, Yan Xu, Jiayu Wu
Astrocytes perform several functions in the brain and spinal cord. Penicillin is commonly used for establishment of experimental epilepsy models. Previous studies have demonstrated that astragaloside IV (3-o-β-d-xylopyranosyl-6-o-β-d-glucopyranosyl-cycloastragenol; AS‑IV) has comprehensive pharmacological functions on the attenuation of inflammation. In the present study, primary astrocyte cell cultures were divided into three groups: Control group, penicillin (2,500 µM) treatment group (epilepsy model), and penicillin+AS‑IV (20, 40, 80 and 160 µmol/l) treatment group...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29100462/the-role-of-substance-p-in-epilepsy-and-seizure-disorders
#12
REVIEW
Xue Feng Wang, Tong Tong Ge, Jie Fan, Wei Yang, Ran Ji Cui
A range of evidence implicates the neuropeptide substance P (SP), a member of the tachykinin family, in emotional behavior, anxiety, pain, and inflammation. Recently, SP has been implicated in susceptibility to seizures, for which a potential proconvulsant role was indicated. Indeed, antagonists of a specific SP receptor, neurokinin-1 receptor, were found to attenuate kainic acid (KA)-induced seizure activity. However, detailed mechanisms of SP regulation in epilepsy remain obscure. In this review, we summarize the present literature to expound the role of SP in epilepsy, and provide hypotheses for potential mechanisms...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29066951/connexin43-and-pannexin-based-channels-in-neuroinflammation-and-cerebral-neuropathies
#13
REVIEW
Denis Sarrouilhe, Catherine Dejean, Marc Mesnil
Connexins (Cx) are largely represented in the central nervous system (CNS) with 11 Cx isoforms forming intercellular channels. Moreover, in the CNS, Cx43 can form hemichannels (HCs) at non-junctional membrane as does the related channel-forming Pannexin1 (Panx1) and Panx2. Opening of Panx1 channels and Cx43 HCs appears to be involved in inflammation and has been documented in various CNS pathologies. Over recent years, evidence has accumulated supporting a link between inflammation and cerebral neuropathies (migraine, Alzheimer's disease (AD), Parkinson's disease (PD), major depressive disorder, autism spectrum disorder (ASD), epilepsy, schizophrenia, bipolar disorder)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29055271/neurocysticercosis-as-an-infectious-acquired-epilepsy-worldwide
#14
REVIEW
Doodipala Samba Reddy, Randy Volkmer
Aside from brain injury and genetic causes, there is emerging information on brain infection and inflammation as a common cause of epilepsy. Neurocysticercosis (NCC), the most common cause of epilepsy worldwide, is caused by brain cysts from the Taenia solium tapeworm. In this article, we provide a critical analysis of current and emerging information on the relationship between NCC infection and epilepsy occurrence. We searched PubMed and other databases for reports on the prevalence of NCC and incidence of epilepsy in certain regions worldwide...
November 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29053743/in-vitro-modeling-of-experimental-succinic-semialdehyde-dehydrogenase-deficiency-ssadhd-using-brain-derived-neural-stem-cells
#15
Kara R Vogel, Garrett R Ainslie, Erwin E Jansen, Gajja S Salomons, Jean-Baptiste Roullet, K Michael Gibson
We explored the utility of neural stem cells (NSCs) as an in vitro model for evaluating preclinical therapeutics in succinic semialdehyde dehydrogenase-deficient (SSADHD) mice. NSCs were obtained from aldh5a1+/+ and aldh5a1-/- mice (aldh5a1 = aldehyde dehydrogenase 5a1 = SSADH). Multiple parameters were evaluated including: (1) production of GHB (γ-hydroxybutyrate), the biochemical hallmark of SSADHD; (2) rescue from cell death with the dual mTOR (mechanistic target of rapamycin) inhibitor, XL-765, an agent previously shown to rescue aldh5a1-/- mice from premature lethality; (3) mitochondrial number, total reactive oxygen species, and mitochondrial superoxide production, all previously documented as abnormal in aldh5a1-/- mice; (4) total ATP levels and ATP consumption; and (5) selected gene expression profiles associated with epilepsy, a prominent feature in both experimental and human SSADHD...
2017: PloS One
https://www.readbyqxmd.com/read/29052569/analysis-of-the-expression-of-angioarchitecture-related-factors-in-patients-with-cerebral-arteriovenous-malformation
#16
Guang-Zhong Chen, Yu Ke, Kun Qin, Meng-Qi Dong, Shao-Jian Zeng, Xiao-Feng Lin, Sheng-Quan Zhan, Kai Tang, Chao Peng, Xiao-Wen Ding, Dong Zhou
BACKGROUND: Cerebral arteriovenous malformation (cAVM) is a type of vascular malformation associated with vascular remodeling, hemodynamic imbalance, and inflammation. We detected four angioarchitecture-related cytokines to make a better understanding of the potential aberrant signaling in the pathogenesis of cAVM and found useful proteins in predicting the risk of cerebral hemorrhage. METHODS: Immunohistochemical analysis was conducted on specimens from twenty patients with cAVM diagnosed via magnetic resonance imaging and digital subtraction angiography and twenty primary epilepsy controls using antibodies against vascular endothelial growth factor receptor-2 (VEGFR-2), matrix metalloproteinase-9 (MMP-9), vascular cell adhesion molecule (VCAM-1), and endothelial nitric oxide synthase (eNOS)...
October 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29042524/-autoimmune-and-epilepsy
#17
Riki Matsumoto, Mitsuhiro Sakamoto, Akio Ikeda
The recent discovery of autoimmune antibodies to the neuronal cell surface membrane and extra- or intra-cellular proteins, such as NMDAR and LGI1, shed light on a proposed new etiology of epilepsy, namely, "autoimmune epilepsy". A large part of this entity most likely belongs to a forme fruste of autoimmune (limbic) encephalitis. Seizures are usually subacute in onset and refractory to antiepileptic medications. Patients occasionally manifest multiple seizure semiologies, such as autonomic or faciobrachial dystonic seizures...
October 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29034952/viscum-articulatum-burm-f-a-review-on-its-phytochemistry-pharmacology-and-traditional-uses
#18
REVIEW
Bhishma P Patel, Pawan K Singh
OBJECTIVES: The aim of this study was to review and highlight traditional and ethnobotanical uses, phytochemical constituents, IP status, biological activity and pharmacological activity of Viscum articulatum. METHODS: Thorough literature searches were performed on Viscum articulatum, and data were analysed for reported traditional uses, pharmacological activity, phytochemicals present and patents filed. Scientific and patent databases such as PubMed, Science Direct, Google Scholar, Google patents, USPTO and Espacenet were searched using different keywords...
October 16, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29032011/sitagliptin-enhances-the-neuroprotective-effect-of-pregabalin-against-pentylenetetrazole-induced-acute-epileptogenesis-in-mice-implication-of-oxidative-inflammatory-apoptotic-and-autophagy-pathways
#19
Manar A Nader, Hayam Ateyya, Mohamed El-Shafey, Nagla A El-Sherbeeny
The current investigation aimed at studying the anti-epileptogenic effect of sitagliptin. The possible effect of the drug in combination with pregabalin in pentylenetetrazole (PTZ)- induced seizures was studied. In addition, the postulated mechanisms that could mediate such effect were explored namely, suppression of oxidative stress and neuro-inflammatory markers, autophagy and apoptosis. Seven days prior to PTZ (60 mg/kg, sc) injection, mice were treated with sitagliptin (5, 15, and 60 mg/kg, twice daily, orally) or pregabalin (30 mg/kg, once daily, orally) or their combination...
October 11, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28987196/overview-of-neuroradiology
#20
Elna-Marie Larsson, Johan Wikström
Neuroradiology with computed tomography (CT) and magnetic resonance imaging (MRI) is essential for the initial evaluation of patients with a clinical suspicion of brain and spine disorders. Morphologic imaging is required to obtain a probable diagnosis to support the treatment decisions in pre- and perinatal disorders, vascular diseases, traumatic injuries, metabolic disorders, epilepsy, infection/inflammation, neurodegenerative disorders, degenerative spinal disease, and tumors of the central nervous system...
2017: Handbook of Clinical Neurology
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