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https://www.readbyqxmd.com/read/29433116/-mr-guided-focused-ultrasound
#1
Hideki Mochizuki, Noriaki Hattori
Since the middle of the 20th century and in order to treat neurological diseases, clinicians have proposed the use of ultrasound, instead of skin incision or trepanation, when performing intracranial thermocoagulation. However, focusing ultrasound intracranially with high precision was technically difficult until recent technological developments. Specifically, advancements in ultrasound phased-array transducers have eliminated the need for a craniotomy, and progress in magnetic resonance (MR) imaging has allowed the real-time measurement of intracranial temperature...
February 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29426807/neonatal-epilepsy-genetics
#2
REVIEW
Erika J T Axeen, Heather E Olson
Neonatal epilepsy genetics is a rapidly expanding field with recent technological advances in genomics leading to an expanding list of genetic disorders associated with neonatal-onset epilepsy. The genetic causes of neonatal epilepsy can be grouped into the following categories: (i) malformations of cortical development, (ii) genetic-metabolic, (iii) genetic-vascular, (iv) genetic-syndromic, and (v) genetic-cellular. Clinically, epilepsy in the neonate shows phenotypic overlap with pathogenic variants in unrelated genes causing similar clinical presentation (locus heterogeneity) and variants in the same gene leading to a wide clinical spectrum ranging from benign familial neonatal seizures to more severe epileptic encephalopathies (variable expressivity)...
January 31, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29425906/effects-of-vagal-neuromodulation-on-feeding-behavior
#3
Nicole A Pelot, Warren M Grill
Implanted vagus nerve stimulation (VNS) for obesity was recently approved by the FDA. However, its efficacy and mechanisms of action remain unclear. Herein, we synthesize clinical and preclinical effects of VNS on feeding behavior and energy balance and discuss engineering considerations for understanding and improving the therapy. Clinical cervical VNS (≤30 Hz) to treat epilepsy or depression has produced mixed effects on weight loss as a side effect, albeit in uncontrolled, retrospective studies. Conversely, preclinical studies (cervical and subdiaphragmatic VNS) mostly report decreased food intake and either decreased weight gain or weight loss...
February 6, 2018: Brain Research
https://www.readbyqxmd.com/read/29414561/a-modern-epilepsy-surgery-treatment-algorithm-incorporating-traditional-and-emerging-technologies
#4
REVIEW
Dario J Englot
Epilepsy surgery has seen numerous technological advances in both diagnostic and therapeutic procedures in recent years. This has increased the number of patients who may be candidates for intervention and potential improvement in quality of life. However, the expansion of the field also necessitates a broader understanding of how to incorporate both traditional and emerging technologies into the care provided at comprehensive epilepsy centers. This review summarizes both old and new surgical procedures in epilepsy using an example algorithm...
February 1, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29393419/hmgb1-mediates-microglia-activation-via-the-tlr4-nf-%C3%AE%C2%BAb-pathway-in-coriaria-lactone-induced-epilepsy
#5
Yunbo Shi, Lingli Zhang, Junfang Teng, Wang Miao
Epilepsy is a chronic and recurrent disease of the central nervous system, with a complex pathology. Recent studies have demonstrated that the activation of glial cells serve an important role in the development of epilepsy. The objective of the present study was to investigate the role of high‑mobility group box‑1 (HMGB1) in mediating the activation of glial cells through the toll‑like receptor 4 (TLR4)/nuclear factor (NF)‑κB signaling pathway in seizure, and the underlying mechanism. The brain tissue of post‑surgery patients with intractable epilepsy after resection and the normal control brain tissue of patients with craniocerebral trauma induced intracranial hypertension were collected...
January 25, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29369115/are-the-days-of-counting-seizures-numbered
#6
Philippa Karoly, Daniel M Goldenholz, Mark Cook
PURPOSE OF REVIEW: The estimation of seizure frequency is a cornerstone of clinical management of epilepsy and the evaluation of new therapies. Current estimation approaches are significantly limited by several factors. Comparing patient diaries and objective estimates (through both inpatient video-EEG monitoring of and long-term ambulatory EEG studies) reveal that patients document seizures inaccurately. So far, few practical alternative methods of estimation have been available. RECENT FINDINGS: We review the systems of counting currently utilized and their limitations, as well as the limitations imposed by problems defining clinical events...
January 22, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29359340/mtor-pathway-focal-cortical-dysplasia-and-epilepsy
#7
Elise Marsan, Stéphanie Baulac
Over the last decade, there has been increasing evidence that hyperactivation of the mechanistic target of rapamycin (mTOR) pathway is a hallmark of focal cortical dysplasia (FCD), as well as other cortical malformations such as hemimegalencephaly (HME) or in tuberous sclerosis complex (TSC). The mTOR pathway governs protein and lipid synthesis, cell growth and proliferation as well as metabolism and autophagy. The molecular genetic aetiology of mTOR hyperactivation has only been recently clarified. This article will review the current and still evolving genetic advances in the elucidation of the molecular basis of FCD...
January 23, 2018: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/29355038/the-future-of-type-1-cannabinoid-receptor-allosteric-ligands
#8
Mariam Alaverdashvili, Robert B Laprairie
Allosteric modulation of the type 1 cannabinoid receptor (CB1R) holds great therapeutic potential. This is because allosteric modulators do not possess intrinsic efficacy, but instead augment (positive allosteric modulation) or diminish (negative allosteric modulation) the receptor's response to endogenous ligand. Consequently, CB1R allosteric modulators have an effect ceiling which allows for the tempering of CB1R signaling without the desensitization, tolerance, dependence, and psychoactivity associated with orthosteric compounds...
January 21, 2018: Drug Metabolism Reviews
https://www.readbyqxmd.com/read/29352627/indications-and-limits-of-stereoelectroencephalography-seeg
#9
REVIEW
Lorella Minotti, Alexandra Montavont, Julia Scholly, Louise Tyvaert, Delphine Taussig
Epilepsy surgery is now an accepted treatment to achieve seizure control in carefully selected patients, both children and adults, suffering from drug-resistant focal epilepsy. Although surgical strategies can often be defined on the basis of non-invasive diagnostic procedures, and despite the recent advances in this field, an increasing number of more complex cases requires invasive EEG (iEEG) to provide precise information on the localization of the epileptogenic zone (EZ), its relationships with eloquent cortex (EC), and the feasibility of a tailored surgical resection...
January 15, 2018: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/29344465/grey-and-white-matter-alterations-in-juvenile-myoclonic-epilepsy-a-comprehensive-review
#10
REVIEW
Ji Hyun Kim
Juvenile myoclonic epilepsy (JME) has been classified as a syndrome of idiopathic generalized epilepsy and is characterized by a strong genetic basis, age-specific onset of seizures, specific types of seizures, generalized spike-wave discharges on electroencephalography, and a lack of focal abnormality on magnetic resonance imaging (MRI). Recently, a wide range of advanced neuroimaging techniques have been utilized to elucidate the neuroanatomical substrates and pathophysiological mechanisms underlying JME...
December 2017: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/29338461/mtor-dysregulation-and-tuberous-sclerosis-related-epilepsy
#11
Paolo Curatolo, Romina Moavero, Jackelien van Scheppingen, Eleonora Aronica
The mammalian target of rapamycin (mTOR) pathway has emerged as a key player for proper neural network development, and it is involved in epileptogenesis triggered by both genetic or acquired factors. Areas covered. The robust mTOR signaling deregulation observed in a large spectrum of epileptogenic developmental pathologies, such as focal cortical dysplasias and tuberous sclerosis complex (TSC), has been linked to germline and somatic mutations in mTOR pathway regulatory genes, increasing the spectrum of 'mTORopathies'...
January 27, 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29301484/editorial-recent-advances-in-pathophysiological-studies-and-treatment-of-epilepsy
#12
EDITORIAL
Guanghao Yin, Gang Yao, Kun Zhang, Bingjin Li
No abstract text is available yet for this article.
2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29278549/new-developments-in-understanding-focal-cortical-malformations
#13
Albert J Becker, Heinz Beck
PURPOSE OF REVIEW: Focal cortical dysplasias (FCDs) represent common cortical malformations that are frequently associated with epilepsy. They have so far not been well understood in terms of their molecular pathogenesis, and with respect to mechanisms of seizure emergence. RECENT FINDINGS: Several recent studies have succeeded in making significant advances in understanding the molecular genetics, in particular FCD type II. A second major advance has been the development of novel rodent models of FCDs that replicate a somatic mutation seen in humans, lead to a focal lesion, and recapitulate many phenotypic features of human FCDs...
December 22, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29278548/the-current-place-of-epilepsy-surgery
#14
Jerome Engel
PURPOSE OF REVIEW: Three randomized controlled trials demonstrate that surgical treatment is safe and effective for drug-resistant epilepsy (DRE), yet fewer than 1% of patients are referred for surgery. This is a review of recent trends in surgical referral for DRE, and advances in the field. Reasons for continued underutilization are discussed. RECENT FINDINGS: Recent series indicate no increase in surgical referral for DRE over the past two decades. One study suggests that decreased referrals to major epilepsy centers can be accounted for by increased referrals to low-volume nonacademic hospitals where results are poorer, and complication rates higher...
December 22, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29236669/-optically-dissecting-brain-nicotinic-receptor-function-with-photo-controllable-designer-receptors
#15
Romain Durand-de Cuttoli, Sarah Mondoloni, Alexandre Mourot
Nicotinic acetylcholine receptors (nAChRs) are pentameric ligand-gated ion channels widely expressed in the central nervous system and the periphery. They play an important modulatory role in learning, memory and attention, and have been implicated in various diseases such as Alzheimer's disease, Parkinson's disease, epilepsy, schizophrenia and addiction. These receptors are activated by the endogenous neurotransmitter acetylcholine, or by nicotine, the alkaloid found in tobacco leaves. Both molecules open the ion channel and cause the movement of cations across the membrane, which directly affects neuronal excitability and synaptic plasticity...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/29227297/neuropsychiatric-effects-of-epilepsy-in-developmental-disorders
#16
Jay Salpekar
PURPOSE OF REVIEW: The overlap of neuropsychiatric illness and developmental disability continues to be prominently recognized in clinical practice and in the academic literature. Theoretical and practical considerations may represent a frontier for understanding brain and behavior relationships. The purpose of this review is to explore this common relationship and report on recent literature that helps advance the larger fields of psychiatry and neurology. RECENT FINDINGS: Overlap between developmental disability, epilepsy, and neuropsychiatric illness may be more common than originally thought...
December 7, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/29214565/intellectual-disability-rare-disorders-a-diagnostic-challenge
#17
Malin Kvarnung, Ann Nordgren
Rare disorders constitute a large and heterogeneous group of diagnoses of which many cause chronic disabilities with significant impact on the lives of affected individuals and their families as well as on the health-care system. Each individual disorder is rare, but when considered as a group, rare disorders are common with a total prevalence of approximately 6-8%. The clinical presentation of these disorders includes a broad diversity of symptoms and signs, often involving the nervous system and resulting in symptoms such as intellectual disability, neuropsychiatric disorders, epilepsy and motor dysfunction...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29163069/notes-on-the-recent-history-of-neuroscience-in-africa
#18
REVIEW
Vivienne A Russell
Neuroscience began with neuroanatomy and neurosurgery in Egypt more than 5000 years ago. Knowledge grew over time and specialized neurosurgery centers were established in north Africa in the eleventh century. However, it was not until the twentieth century that neuroscience research became established in sub-Saharan Africa. In most African countries, clinical research focused on understanding the rationale and improving treatment of epilepsy, infections, nutritional neuropathies, stroke and tumors. Significant advances were made...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29142081/genetic-and-molecular-regulation-of-extrasynaptic-gaba-a-receptors-in-the-brain-therapeutic-insights-for-epilepsy
#19
Shu-Hui Chuang, Doodipala Samba Reddy
GABA-A receptors play a pivotal role in many brain diseases. Epilepsy is caused by acquired conditions and genetic defects in GABA receptor channels regulating neuronal excitability in the brain. The latter is referred to as GABA channelopathies. In the last two decades, major advances have been made in the genetics of epilepsy. The presence of specific GABAergic genetic abnormalities leading to some of the classical epileptic syndromes has been identified. Advances in molecular cloning and recombinant systems have helped characterize mutations in GABA-A receptor subunit genes in clinical neurology...
November 15, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29124671/mutations-of-n-methyl-d-aspartate-receptor-subunits-in-epilepsy
#20
REVIEW
Xing-Xing Xu, Jian-Hong Luo
Epilepsy is one of the most common neurological diseases. Of all cases, 70%-80% are considered to be due to genetic factors. In recent years, a large number of genes have been identified as being involved in epilepsy. Among them, N-methyl-D-aspartate receptor (NMDAR) subunit-encoding genes represent a large proportion, suggesting an important role for NMDARs in epilepsy. In this review, we summarize and analyze the genotypes, functional alterations, and clinical aspects of NMDAR subunit mutations/variants identified from patients with epilepsy...
November 10, 2017: Neuroscience Bulletin
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