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Drug induced seizure

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https://www.readbyqxmd.com/read/29331789/anticonvulsant-activities-of-%C3%AE-asaronol-e-3-hydroxyasarone-an-active-constituent-derived-from-%C3%AE-asarone
#1
Xirui He, Yajun Bai, Min Zeng, Zefeng Zhao, Qiang Zhang, Ning Xu, Fanggang Qin, Xiaoyang Wei, Meimei Zhao, Ni Wu, Zehua Li, Yajun Zhang, Tai-Ping Fan, Xiaohui Zheng
BACKGROUND: Epilepsy is one of chronic neurological disorders that affects 0.5-1.0% of the world's population during their lifetime. There is a still significant need to develop novel anticonvulsant drugs that possess superior efficacy, broad spectrum of activities and good safety profile. METHODS: α-Asaronol and two current antiseizure drugs (α-asarone and carbamazepine (CBZ)) were assessed by in vivo anticonvulsant screening with the three most employed standard animal seizure models, including maximal electroshock seizure (MES), subcutaneous injection-pentylenetetrazole (PTZ)-induced seizures and 3-mercaptopropionic acid (3-MP)-induced seizures in mice...
August 31, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29329017/amiodarone-a-multi-channel-blocker-enhances-anticonvulsive-effect-of-carbamazepine-in-the-mouse-maximal-electroshock-model
#2
Monika Banach, Monika Popławska, Kinga K Borowicz-Reutt
Cardiac arrhythmia may occur in the course of epilepsy. Simultaneous therapy of the two diseases might be complicated by drug interactions since antiarrhythmic and antiepileptic agents share some molecular targets. The aim of this study was to evaluate the influence of amiodarone, an antiarrhythmic drug working as a multi-channel blocker, on the protective activity of four classical antiepileptic drugs in the maximal electroshock test in mice. Amiodarone at doses up to 75 mg/kg did not affect the electroconvulsive threshold in mice...
January 5, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29318511/midazolam-efficacy-against-acute-hydrogen-sulfide-induced-mortality-and-neurotoxicity
#3
Poojya Anantharam, Dong-Suk Kim, Elizabeth M Whitley, Belinda Mahama, Paula Imerman, Piyush Padhi, Wilson K Rumbeiha
Hydrogen sulfide (H2S) is a colorless, highly neurotoxic gas. It is not only an occupational and environmental hazard but also of concern to the Department of Homeland Security for potential nefarious use. Acute high-dose H2S exposure causes death, while survivors may develop neurological sequelae. Currently, there is no suitable antidote for treatment of acute H2S-induced neurotoxicity. Midazolam (MDZ), an anti-convulsant drug recommended for treatment of nerve agent intoxications, could also be of value in treating acute H2S intoxication...
January 9, 2018: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/29302568/severe-hyponatremia-associated-with-escitalopram
#4
Gautam Rawal, Raj Kumar, Sankalp Yadav
Hyponatremia is a rare but potentially fatal complication of selective serotonin reuptake inhibitor (SSRI) therapy with only limited cases of escitalopram as the causative drug. We report the case of a 54-year-old hypertensive female who was admitted to the hospital with seizure episode and subsequently diagnosed to have severe hyponatremia due to SSRI-induced syndrome of inappropriate antidiuretic hormone (SIADH) with the cause attributed to the short history of intake of escitalopram for depression. All SSRIs, including escitalopram, can cause SIADH and should be used with caution in the depressive patients with regular monitoring of electrolytes, especially in the elderly...
April 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29302214/antidepressant-drug-paroxetine-blocks-the-open-pore-of-kv3-1-potassium-channel
#5
Hyang Mi Lee, Ok Hee Chai, Sang June Hahn, Bok Hee Choi
In patients with epilepsy, depression is a common comorbidity but difficult to be treated because many antidepressants cause pro-convulsive effects. Thus, it is important to identify the risk of seizures associated with antidepressants. To determine whether paroxetine, a very potent selective serotonin reuptake inhibitor (SSRI), interacts with ion channels that modulate neuronal excitability, we examined the effects of paroxetine on Kv3.1 potassium channels, which contribute to highfrequency firing of interneurons, using the whole-cell patch-clamp technique...
January 2018: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29296617/flupirtine-and-diazepam-combination-terminates-established-status-epilepticus-results-in-three-rodent-models
#6
Terry Zhang, Marko S Todorovic, John Williamson, Jaideep Kapur
Objective: Status epilepticus (SE) is a neurological emergency requiring rapid termination of seizures. New treatment choices are needed for benzodiazepine-refractory SE or established SE (ESE). Previous studies have demonstrated that the potassium-channel opener flupirtine terminates seizures in neonatal animals. However, its effectiveness in adult ESE has not been tested. We tested whether flupirtine alone or in combination with the benzodiazepine diazepam would terminate ESE in three animal models...
December 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29291205/topiramate-induced-peripheral-neuropathy-a-case-report-and-review-of-literature
#7
Sherifa Ahmed Hamed
Drug-induced peripheral neuropathy had been rarely reported as an adverse effect of some antiepileptic drugs (AEDs) at high cumulative doses or even within the therapeutic drug doses or levels. We describe clinical and diagnostic features of a patient with peripheral neuropathy as an adverse effect of chronic topiramate (TPM) therapy. A 37-year-old woman was presented for the control of active epilepsy (2010). She was resistant to some AEDs as mono- or combined therapies (carbamazepine, sodium valproate, levetiracetam, oxcarbazepine and lamotrigine)...
December 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29289807/seizures-in-surgically-resected-atypical-and-malignant-meningiomas-long-term-outcome-analysis
#8
Yu-Chi Wang, Chi-Cheng Chuang, Po-Hsun Tu, Kuo-Chen Wei, Chieh-Tsai Wu, Cheng-Chi Lee, Zhuo-Hao Liu, Pin-Yuan Chen
PURPOSE: Seizures in rare atypical and malignant meningiomas were significantly under-studied. Our aim was to examine the rates, predictors, and seizure control in these meningiomas, and to analyze associations between clinical characteristics and seizure free survival (SFS) following surgical resection in an Asian population. METHODS: We retrospectively analyzed 102 patients with atypical or malignant meningiomas. Seizures occurring before and after the operation were reviewed...
December 17, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29287786/leptin-treatment-prevents-long-term-abnormalities-in-cognition-seizure-threshold-hippocampal-mossy-fiber-sprouting-and-znt3-cb-d28k-expression-in-a-rat-developmental-twist-seizure-model
#9
Hong Ni, Su-Hong Chen, Li-Li Li, Mei-Fang Jin
The mechanism of linking neonatal seizures with long-term brain damage is unclear, and there is no effective drug to block this long-term pathological process. Recently, the fat-derived hormone leptin has been appreciated for its neuroprotective function in neurodegenerative processes, although less is known about the effects of leptin on neonatal seizure-induced brain damage. Here, we developed a "twist" seizure model by coupling pilocarpine-induced neonatal status epilepticus (SE) with later exposure to penicillin to test whether leptin treatment immediately after neonatal SE would exert neuroprotective effects on cognition, seizure threshold and hippocampal mossy fiber sprouting, as well if leptin had any influence on the expression of zinc transporter 3 (ZnT3) and calcium homeostasis-related CB-D28k in the hippocampus...
December 26, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29287214/favorable-adverse-effect-profile-of-brivaracetam-vs-levetiracetam-in-a-preclinical-model
#10
Nathalie T Sanon, Jonathan Gagné, Daniele C Wolf, Soumia Aboulamer, Ciprian M Bosoi, Alexe Simard, Estelle Messiet, Sébastien Desgent, Lionel Carmant
Levetiracetam (LEV), and its newer selective analog brivaracetam (BRV), are two seizure medications that share an innovative mechanism of action targeting the Synaptic Vesicle Protein 2A (SV2A), altering neurotransmitter release and decreasing seizure frequency. Behavioral changes are the most significant adverse effects reported by patients taking LEV. We hypothesize that BRV, the more potent SV2A analog, could exert less behavioral side effects, as it requires lower doses than LEV. Using Kainic Acid (KA)-treated and control rats, we measured adverse behavioral effect profiles of LEV, BRV, or Saline, on social and nonsocial behaviors...
December 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29286347/anticonvulsant-activity-of-halogen-substituted-cinnamic-acid-derivatives-and-their-effects-on-glycosylation-of-ptz-induced-chronic-epilepsy-in-mice
#11
Ye Cuan, Xirui He, Yuhui Zhao, Jiajun Yang, Yajun Bai, Yin Sun, Qiang Zhang, Zefeng Zhao, Xiaoyang Wei, Xiaohui Zheng
Epilepsy is a common chronic neurological disorder disease, and there is an urgent need for the development of novel anticonvulsant drugs. In this study, the anticonvulsant activities and neurotoxicity of 12 cinnamic acid derivatives substituted by fluorine, chlorine, bromine, and trifluoromethyl groups were screened by the maximal electroshock seizure (MES) and rotarod tests (Tox). Three of the tested compounds (compounds 3, 6 and 12) showed better anticonvulsant effects and lower neurotoxicity. They showed respective median effective dose (ED50) of 47...
December 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29262297/antiallodynic-and-antihyperalgesic-activity-of-new-3-3-diphenyl-propionamides-with-anticonvulsant-activity-in-models-of-pain-in-mice
#12
Anna Rapacz, Jolanta Obniska, Paulina Koczurkiewicz, Katarzyna Wójcik-Pszczoła, Agata Siwek, Anna Gryboś, Sabina Rybka, Aleksandra Karcz, Elżbieta Pękala, Barbara Filipek
Anticonvulsant drugs are used to treat a wide range of non-epileptic conditions, including chronic pain. The aim of the present experiments was to examine analgesic activity of three new 3,3-diphenyl-propionamides, which had previously demonstrated anticonvulsant activity in the MES (maximal electroshock seizure), scPTZ (subcutaneous pentylenetetrazole) and/or 6Hz (psychomotor seizure) tests in mice. Antinociceptive activity was examined in mouse models of acute pain (the hot plate test) and tonic pain (the formalin test) in mice...
December 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29250772/adjunctive-perampanel-in-partial-onset-seizures-asia-pacific-randomized-phase-iii-study
#13
T Nishida, S K Lee, Y Inoue, K Saeki, K Ishikawa, S Kaneko
OBJECTIVES: To evaluate the efficacy, safety, and tolerability of perampanel, a selective, non-competitive, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist, as an adjunctive treatment for patients with refractory partial-onset seizures (POS) from Asia-Pacific. MATERIALS & METHODS: This multicenter, randomized, double-blind, placebo-controlled trial (ClinicalTrials.gov identifier: NCT01618695) involved patients aged ≥12 years with refractory POS (receiving 1-3 antiepileptic drugs)...
December 17, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29248452/protective-effect-of-terminalia-chebula-against-seizures-seizure-induced-cognitive-impairment-and-oxidative-stress-in-experimental-models-of-seizures-in-rats
#14
Ritesh Kumar, Renu Arora, Amit Agarwal, Y K Gupta
ETHNOPHARMACOLOGICAL RELEVANCE: Teminalia chebula (TC) has been traditionally used in the Ayurvedic system of medicine primarily for gastrointestinal disorders. Its fruit extract has also been used to treat epilepsy and other CNS disorders. AIM OF THE STUDY: To evaluate the effect of hydroalcoholic fruit extract of Terminalia chebula (HETC) on experimental models of seizures, seizure-induced cognitive impairment and oxidative stress in rats. MATERIALS AND METHODS: In vitro antioxidant activity of HETC was evaluated by using ABTS, NO and DPPH radical scavenging assay...
December 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29239480/cobinamide-is-effective-for-treatment-of-hydrogen-sulfide-induced-neurological-sequelae-in-a-mouse-model
#15
Poojya Anantharam, Elizabeth M Whitley, Belinda Mahama, Dong-Suk Kim, Souvarish Sarkar, Cristina Santana, Adriano Chan, Anumantha G Kanthasamy, Arthi Kanthasamy, Gerry R Boss, Wilson K Rumbeiha
Hydrogen sulfide (H2 S) is a highly neurotoxic gas. Acute exposure can lead to neurological sequelae among survivors. A drug for treating neurological sequelae in survivors of acute H2 S intoxication is needed. Using a novel mouse model we evaluated the efficacy of cobinamide (Cob) for increasing survival of, and reducing neurological sequalae in, mice exposed to sublethal doses of H2 S. There were two objectives: (1) to determine the dose-response efficacy of Cob and (2) to determine the effective therapeutic time window of Cob...
November 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29235453/potential-impact-of-thermal-effects-during-ultrasonic-neurostimulation-retrospective-numerical-estimation-of-temperature-elevation-in-seven-rodent-setups
#16
Charlotte Constans, Philippe Mateo, Mickael Tanter, Jean-Francois Aubry
In the past decade, a handful but growing number of groups have reported worldwide successful low intensity focused ultrasound induced neurostimulation trials on rodents with effects ranging from movement elicitations to reduction of anesthesia time or reduction of the duration of drug induced seizures. The mechanisms underlying ultrasonic neuromodulation are still not fully understood. Given the low intensities used in most of the studies, a mechanical effect is more likely to be responsible for the neuromodulation effect, but a clear description of the thermal and mechanical effects is necessary to optimize clinical applications...
December 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29227797/anticonvulsant-effects-of-acetaminophen-in-mice-comparison-with-the-effects-of-nonsteroidal-anti-inflammatory-drugs
#17
Katsuya Suemaru, Misato Yoshikawa, Akihiro Tanaka, Hiroaki Araki, Hiroaki Aso, Masahiko Watanabe
OBJECTIVE: The appropriate use of analgesic drugs based on their degree of analgesia and adverse effects is important for pain management. Although it has been reported that AM404, a metabolite of acetaminophen, has anticonvulsant effects in several animal seizure models, little is known about the relation between acetaminophen and seizures. We therefore investigated the effects of acetaminophen on seizure susceptibility in several mouse seizure and epilepsy models and compared the effects with those of nonsteroidal anti-inflammatory drugs (NSAIDs)...
December 5, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29227795/divergent-effects-of-levetiracetam-and-tiagabine-against-spontaneous-seizures-in-adult-rats-following-neonatal-hypoxia
#18
Raymond Dunn, Bridget N Queenan, Daniel T S Pak, Patrick A Forcelli
Animal models are valuable tools for screening novel therapies for patients who suffer from epilepsy. However, a wide array of models are necessary to cover the diversity of human epilepsies. In humans, neonatal hypoxia (or hypoxia-ischemia) is one of the most common causes of epilepsy early in life. Hypoxia-induced seizures (HS) during the neonatal period can also lead to spontaneous seizures in adulthood. This phenomenon, i.e., early-life hypoxia leading to adult epilepsy - is also seen in experimental models, including rats...
December 5, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29212069/cellular-effects-of-the-antiepileptic-drug-valproic-acid-in-glioblastoma
#19
Marita Eckert, Lukas Klumpp, Stephan Huber
BACKGROUND/AIMS: Valproic acid (VPA), an anticonvulsant and mood-stabilizing drug is used to treat epileptic seizure of glioblastoma patients. Besides its antiepileptic activity, VPA has been attributed further functions that improve the clinical outcome of glioblastoma patients. Those comprise the inhibition of some histone deacetylase (HDAC) isoforms which reportedly may result in radiosensitization. Retrospective analysis of patient data, however, could not unequivocally confirm a prolonged survival of glioblastoma patients receiving VPA...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29207763/carbamazepine-induced-thrombocytopenia
#20
Ruhi Kumar, Sridhar Chivukula, Goutham Reddy Katukuri, U K Chandrasekhar, K N Shivashankar
Antiepileptic Drugs (AEDs) are commonly associated with haematological disorders, including anaemia, thrombocytopenia, neutropenia and even bone marrow failure. Fatal disorders like aplastic anaemia are uncommon. On exploring through the literature, older AEDs are more associated with haematological alterations than newer AEDs, and careful monitoring is warranted especially with phenytoin, carbamazepine and valproate. The exact cause of these alterations is not established, though immune mechanisms and pharmacology of individual drugs are the proposed mechanisms, a further research along this path is underway...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
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