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https://www.readbyqxmd.com/read/28523600/sodium-channel-blockers-in-the-treatment-of-epilepsy
#1
Martin J Brodie
Sodium channel blockers have been the mainstay of the pharmacological management of focal and generalised tonic-clonic seizures for more than 70 years. The focus of this paper will be on phenytoin, carbamazepine, lamotrigine, oxcarbazepine, rufinamide, lacosamide and eslicarbazepine acetate. All these antiepileptic drugs have similar efficacy and share similar dose-dependent, adverse effect profiles, although phenytoin, carbamazepine and oxcarbazepine are more likely to cause idiosyncratic reactions than the others...
May 18, 2017: CNS Drugs
https://www.readbyqxmd.com/read/28521116/efficacy-of-anticonvulsant-substances-in-the-6hz-seizure-test-comparison-of-two-rodent-species
#2
Elise Esneault, Guillaume Peyon, Vincent Castagné
Usually performed in the mouse, the 6Hz seizure test is used for screening potential new anticonvulsant substances against complex partial seizures. Nevertheless, advanced models of temporal lobe epilepsy (TLE) are more often performed in rats, so that possible species-related differences may complicate the development of anticonvulsant substances. The aim of the present study was to evaluate the feasibility of adapting the 6Hz test in the rat. We first compared the effects of increasing current intensities for inducing seizures in the mouse and in the rat...
May 10, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28515564/delayed-stevens-johnson-syndrome-secondary-to-the-use-of-lamotrigine-in-bipolar-mood-disorder
#3
Kunal Kishor Jha, Durgesh Prasad Chaudhary, Tshristi Rijal, Semanta Dahal
Lamotrigine is a mood-stabilizing drug used in maintenance treatment of bipolar I disease. There are adverse effects with lamotrigine such as a headache, blurred vision, diplopia, somnolence, ataxia, dizziness, rash, Stevens-Johnson syndrome (SJS), and toxic epidermal necrolysis. SJS is a life-threatening, blistering mucocutaneous disease. SJS is characterized by the presence of flat, diffuse erythematous maculopapular rashes with the involvement of <10% of the body surface area. Standard trigger is drugs including anticonvulsants, antibiotics, and Mycoplasma pneumoniae infection...
March 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28512694/erratum-to-pregnancy-outcomes-following-in-utero-exposure-to-lamotrigine-a-systematic-review-and-meta-analysis
#4
Gali Pariente, Tom Leibson, Talya Shulman, Thomasin Adams-Webber, Eran Barzilay, Irena Nulman
No abstract text is available yet for this article.
May 17, 2017: CNS Drugs
https://www.readbyqxmd.com/read/28508174/preclinical-comparison-of-mechanistically-different-antiseizure-antinociceptive-and-or-antidepressant-drugs-in-a-battery-of-rodent-models-of-nociceptive-and-neuropathic-pain
#5
Misty D Smith, Jose H Woodhead, Laura J Handy, Timothy H Pruess, Fabiola Vanegas, Erin Grussendorf, Joel Grussendorf, Karen White, Karolina K Bulaj, Reisa K Krumin, Megan Hunt, Karen S Wilcox
The series of experiments herein evaluated prototype drugs representing different mechanisms of antiseizure, antinociceptive or antidepressant action in a battery of preclinical pain models in adult male CF#1 mice (formalin, writhing, and tail flick) and Sprague Dawley rats partial sciatic nerve ligation (PSNL). In the formalin assay, phenytoin (PHT, 6 mg/kg), sodium valproate (VPA, 300 mg/kg), amitriptyline (AMI, 7.5 and 15 mg/kg), gabapentin (GBP, 30 and 70 mg/kg), tiagabine (TGB, 5 and 15 mg/kg), and acetominophen (APAP, 250 and 500 mg/kg) reduced both phases of the formalin response to ≤ 25% of vehicle-treated mice...
May 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28501739/risk-of-postpartum-episodes-in-women-with-bipolar-disorder-after-lamotrigine-or-lithium-use-during-pregnancy-a-population-based-cohort-study
#6
Richard Wesseloo, Xiaoqin Liu, Crystal T Clark, Steven A Kushner, Trine Munk-Olsen, Veerle Bergink
BACKGROUND: Women with bipolar disorder are at high risk for relapse/recurrence postpartum. Among all mood stabilizers, lithium has the largest evidence base for efficacy in the peripartum period, but lamotrigine is increasingly prescribed for bipolar spectrum disorders during pregnancy. The aim of this study was to investigate whether lamotrigine use during pregnancy is as effective as lithium in the prevention of severe episodes postpartum. METHODS: Danish national registries were used to identify pregnancies of women with a diagnosis of bipolar spectrum disorders at the time of conception who used lamotrigine or lithium during pregnancy...
May 3, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28490751/unexpected-efficacy-of-a-novel-sodium-channel-modulator-in-dravet-syndrome
#7
Lyndsey L Anderson, Nicole A Hawkins, Christopher H Thompson, Jennifer A Kearney, Alfred L George
Dravet syndrome, an epileptic encephalopathy affecting children, largely results from heterozygous loss-of-function mutations in the brain voltage-gated sodium channel gene SCN1A. Heterozygous Scn1a knockout (Scn1a (+/-)) mice recapitulate the severe epilepsy phenotype of Dravet syndrome and are an accepted animal model. Because clinical observations suggest conventional sodium channel blocking antiepileptic drugs may worsen the disease, we predicted the phenotype of Scn1a (+/-) mice would be exacerbated by GS967, a potent, unconventional sodium channel blocker...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28488610/pregabalin-and-lamotrigine-in-central-poststroke-pain-a-pilot-study
#8
Jayantee Kalita, Satish Chandra, Usha Kant Misra
BACKGROUND: Comparative study of Class I drugs in central poststroke pain (CPSP) is lacking. OBJECTIVE: To evaluate the safety and efficacy of pregabalin and lamotrigine in patients with CPSP. SETTING: Tertiary care teaching referral hospital. METHODS: We included consecutive patients with CPSP having ≥50 mm score on Visual Analog Scale (VAS) and randomized them to receive either oral pregabalin or oral lamotrigine...
May 2017: Neurology India
https://www.readbyqxmd.com/read/28481729/anticonvulsant-drugs-for-generalized-tonic-clonic-epilepsy
#9
Giangennaro Coppola, Alessandra Piccorossi, Francesca Felicia Operto, Alberto Verrotti
Primary generalized tonic clonic seizures (pGTCS) are still linked to major concerns for the clinic and hazards for patients suffering from idiopathic generalized epilepsy (IGE), so a quick search of the most effective and appropriate therapy is needed to control them. The key criteria for proper treatment are syndromic diagnosis and distinction between newly diagnosed and refractory patients. Other criteria include age, gender and comorbidities. Areas covered: Treatment for pGTCS has expanded in the last two years, with new antiepileptic drugs like perampanel joining valproic acid, lamotrigine, levetiracetam, topiramate, while further evidence-based data are required for zonisamide and lacosamide...
May 8, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28481632/severe-hypernatremic-dehydration-and-lower-limb-gangrene-in-an-infant-exposed-to-lamotrigine-aripiprazole-and-sertraline-in-breast-milk
#10
Caroline Morin, Isabelle Chevalier
BACKGROUND: Hypernatremic dehydration is well described in exclusively breastfed neonates, although life-threatening complications are rarely reported. MATERIALS AND METHODS: The present article describes a case of severe hypernatremic dehydration in a previously healthy term neonate. Other published cases of severe complications of hypernatremic dehydration are discussed. RESULTS: The exclusively breastfed neonate described had severe hypernatremic dehydration because of inadequate milk intake, with disseminated intravascular coagulation and right lower limb gangrene that required amputation of all five toes and surgical debridement of the metatarsals...
May 8, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/28479797/lennox-gastaut-syndrome-a-prospective-follow-up-study
#11
Bhanu Pratap Rathaur, Ravindra Kumar Garg, Hardeep Singh Malhotra, Neeraj Kumar, Praveen Kumar Sharma, Rajesh Verma, Ravi Uniyal
OBJECTIVES: Lennox-Gastaut syndrome is a catastrophic epileptic encephalopathy. In Lennox-Gastaut syndrome, seizures are resistant to pharmacological treatment. In this prospective study, we evaluated the clinical features, neuroimaging, and response to treatment. MATERIALS AND METHODS: Forty-three consecutive newly diagnosed patients of Lennox-Gastaut syndrome were enrolled in the study. Baseline clinical assessment included seizure semiology, seizure frequency, electroencephalography, and neuroimaging...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28476759/hla-a-24-02-as-a-common-risk-factor-for-antiepileptic-drug-induced-cutaneous-adverse-reactions
#12
Yi-Wu Shi, Fu-Li Min, Dong Zhou, Bin Qin, Juan Wang, Fa-Yun Hu, Ying-Kit Cheung, Jin-Hua Zhou, Xiang-Shu Hu, Jue-Qian Zhou, Lie-Min Zhou, Zhong-Zheng Zheng, Jie Pan, Na He, Zhi-Sheng Liu, Yun-Qi Hou, Kheng-Seang Lim, Yang-Mei Ou, Amy Hui-Ping Khor, Ching-Ching Ng, Bi-Jun Mao, Xiao-Rong Liu, Bing-Mei Li, Yao-Yun Kuan, Yong-Hong Yi, Xue-Lian He, Xiao-Yan Deng, Tao Su, Patrick Kwan, Wei-Ping Liao
OBJECTIVE: To investigate the involvement of human leukocyte antigen (HLA) loci in aromatic antiepileptic drug-induced cutaneous adverse reactions. METHODS: A case-control study was performed to detect HLA loci involved in aromatic antiepileptic drug-induced Stevens-Johnson syndrome in a southern Han Chinese population. Between January 1, 2006, and December 31, 2015, 91 cases of Stevens-Johnson syndrome induced by aromatic antiepileptic drugs and 322 matched drug-tolerant controls were enrolled from 8 centers...
May 5, 2017: Neurology
https://www.readbyqxmd.com/read/28472982/comparative-safety-of-anti-epileptic-drugs-during-pregnancy-a-systematic-review-and-network-meta-analysis-of-congenital-malformations-and-prenatal-outcomes
#13
Areti Angeliki Veroniki, Elise Cogo, Patricia Rios, Sharon E Straus, Yaron Finkelstein, Ryan Kealey, Emily Reynen, Charlene Soobiah, Kednapa Thavorn, Brian Hutton, Brenda R Hemmelgarn, Fatemeh Yazdi, Jennifer D'Souza, Heather MacDonald, Andrea C Tricco
BACKGROUND: Pregnant women with epilepsy frequently experience seizures related to pregnancy complications and are often prescribed anti-epileptic drugs (AEDs) to manage their symptoms. However, less is known about the comparative safety of AED exposure in utero. We aimed to compare the risk of congenital malformations (CMs) and prenatal outcomes of AEDs in infants/children who were exposed to AEDs in utero through a systematic review and Bayesian random-effects network meta-analysis...
May 5, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28461749/treatment-resistant-lennox-gastaut-syndrome-therapeutic-trends-challenges-and-future-directions
#14
REVIEW
Adam P Ostendorf, Yu-Tze Ng
Lennox-Gastaut syndrome is a severe, childhood-onset electroclinical syndrome comprised of multiple seizure types, intellectual and behavioral disturbances and characteristic findings on electroencephalogram of slow spike and wave complexes and paroxysmal fast frequency activity. Profound morbidity often accompanies a common and severe seizure type, the drop attack. Seizures often remain refractory, or initial treatment efficacy fades. Few individuals are seizure free despite the development of multiple generations of antiseizure medications over decades and high-level evidence on several choices...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28458102/ivabradine-attenuates-the-anticonvulsant-potency-of-lamotrigine-but-not-that-of-lacosamide-pregabalin-and-topiramate-in-the-tonic-clonic-seizure-model-in-mice
#15
Katarzyna M Sawicka, Katarzyna Załuska, Agnieszka Wawryniuk, Karolina Załuska-Patel, Michał Szczyrek, Bartłomiej Drop, Jadwiga Daniluk, Monika Szpringer, Dorota Żółkowska, Jarogniew J Łuszczki
Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are involved not only in synaptic transmission and neuronal excitability under physiological conditions, but also in seizure activity. To determine the influence of ivabradine (an HCN channel inhibitor) on the anticonvulsant potency of four novel antiepileptic drugs (AEDs: lacosamide, lamotrigine, pregabalin and topiramate) in the mouse maximal electroshock-induced seizure (MES) model. Adult male albino Swiss mice were challenged with maximal electroconvulsions (electric current of 25mA delivered via auricular electrodes)...
April 22, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28449218/development-and-pharmacologic-characterization-of-the-rat-6-hz-model-of-partial-seizures
#16
Cameron S Metcalf, Peter J West, Kyle E Thomson, Sharon F Edwards, Misty D Smith, H S White, Karen S Wilcox
OBJECTIVE: The mouse 6 Hz model of psychomotor seizures is a well-established and commonly used preclinical model for antiseizure drug (ASD) discovery. Despite its widespread use both in the identification and differentiation of novel ASDs in mice, a corresponding assay in rats has not been developed. We established a method for 6 Hz seizure induction in rats, with seizure behaviors similar to those observed in mice including head nod, jaw clonus, and forelimb clonus. METHODS: A convulsive current that elicits these seizure behaviors in 97% of rats (CC97 ) was determined using a Probit analysis...
April 27, 2017: Epilepsia
https://www.readbyqxmd.com/read/28434134/pregnancy-outcomes-following-in-utero-exposure-to-lamotrigine-a-systematic-review-and-meta-analysis
#17
REVIEW
Gali Pariente, Tom Leibson, Talya Shulman, Thomasin Adams-Webber, Eran Barzilay, Irena Nulman
INTRODUCTION: Lamotrigine is used in pregnancy to control epilepsy and mood disorders. The reproductive safety of this widely used drug remains undefined and may represent a significant public health concern. OBJECTIVE: We aimed to perform a systematic review and meta-analysis of existing knowledge related to malformation rates and maternal-neonatal outcomes after in utero exposure to monotherapy with lamotrigine. METHODS: Relevant studies were identified through systematic searches conducted in MEDLINE (Ovid), Embase (Ovid), CENTRAL (Ovid), and Web of Science (Thomson Reuters) from database inception to July 2016; no language or date restrictions were applied...
April 22, 2017: CNS Drugs
https://www.readbyqxmd.com/read/28430672/lamotrigine-uses-in-psychiatric-practice-beyond-bipolar-prophylaxis-a-hope-or-hype
#18
Ahmed Naguy, Najah Al-Enezi
BACKGROUND: Lamotrigine (LAM), an antiepileptic, with panoply of indications and uses in neurology, is FDA approved, in psychiatry, for bipolar prophylaxis. Apart from this indication, trend of its use in psychiatry is on the rise addressing a multitude of disorders. STUDY QUESTION: LAM remains one of only few psychotropic drugs with antiglutamate activity. This might render LAM a potential therapeutic option in treatment-resistant major psychiatric disorders. We reviewed LAM pharmacology and its diverse indications while examining the extant evidence...
April 19, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28424947/neurodevelopmental-effects-of-antiepileptic-drugs
#19
Marissa Kellogg, Kimford J Meador
Increasing evidence suggests that exposure to certain antiepileptic drugs (AEDs) during critical periods of development may induce transient or long-lasting neurodevelopmental deficits across cognitive, motor and behavioral domains. The developing nervous system may endure prolonged chronic exposure to AEDs during pregnancy (in utero) or during childhood, which can lead to neurodevelopmental defects such as congenital neural tube defects, lower IQ, language deficits, autism and ADHD. To date, valproate is the most widely recognized AED to significantly negatively affect neurodevelopment, and demonstrates greater adverse effects than any other AEDs that have been assessed...
April 19, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28421035/antiepileptic-drugs-impair-shortening-of-isolated-cardiomyocytes
#20
Johanna Hulbert, Christian E Elger, Rainer Meyer, Rainer Surges
BACKGROUND: Most antiepileptic drugs (AEDs) inhibit seizure generation by acting on voltage-dependent ion channels. Voltage-dependent sodium and calcium channels are commonly expressed in brain and heart, suggesting that AEDs may have considerable cardiodepressive effects, thereby facilitating sudden cardiac death as a potential cause of sudden unexpected death in epilepsy. Here, we investigated the effects of carbamazepine (CBZ), lamotrigine (LTG), and levetiracetam (LEV) alone and in combination on the shortening properties of isolated ventricular cardiomyocytes of wild-type mice...
2017: Frontiers in Neurology
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