Abstract:
:Lamotrigine has been used for patients with epilepsy and/or bipolar disorder, overdose of which induced the hypotension, elevation of the atrial pacing threshold, cardiac conduction delay, wide complex tachycardia, cardiac arrest and Brugada-like electrocardiographic pattern. To clarify how lamotrigine induces those cardiovascular adverse events, we simultaneously assessed its cardiohemodynamic and electrophysiological effects using the halothane-anesthetized dogs (n = 4). Lamotrigine was intravenously administered in doses of 0.1, 1 and 10 mg/kg/10 min under the monitoring of cardiovascular variables, possibly providing subtherapeutic to supratherapeutic plasma concentrations. The low or middle dose of lamotrigine did not alter any of the variables. The high dose significantly delayed the intra-atrial and intra-ventricular conductions in addition to the prolongation of ventricular effective refractory period, whereas no significant change was detected in the other variables. Lamotrigine by itself has relatively wide safety margin for cardiohemodynamics, indicating that clinically reported hypotension may not be induced through its direct action on the resistance arterioles or capacitance venules. The electrophysiological effects suggested that lamotrigine can inhibit Na+ channel in the in situ hearts. This finding may partly explain the onset mechanism of lamotrigine-associated cardiac adverse events in the clinical cases. In addition, elevation of J wave was induced in half of the animals, suggesting that lamotrigine may have some potential to unmask Brugada electrocardiographic genotype in susceptible patients.
journal_name
Heart Vesselsjournal_title
Heart and vesselsauthors
Goto A,Hagiwara-Nagasawa M,Kambayashi R,Nunoi Y,Izumi-Nakaseko H,Kawai S,Takei Y,Matsumoto A,Sugiyama Adoi
10.1007/s00380-020-01716-8subject
Has Abstractpub_date
2020-11-02 00:00:00eissn
0910-8327issn
1615-2573pii
10.1007/s00380-020-01716-8pub_type
杂志文章abstract::Previous studies have reported the prognostic value of objective nutritional indices such as the Controlling Nutritional Status (CONUT) score, Geriatric Nutritional Risk Index (GNRI) and Prognostic Nutritional Index (PNI). However, the effects of these indices in patients with coronary artery disease (CAD) who have un...
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journal_title:Heart and vessels
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journal_title:Heart and vessels
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journal_title:Heart and vessels
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journal_title:Heart and vessels
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doi:10.1007/BF02058751
更新日期:1991-01-01 00:00:00
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journal_title:Heart and vessels
pub_type: 杂志文章
doi:10.1007/BF01744982
更新日期:1995-01-01 00:00:00
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journal_title:Heart and vessels
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journal_title:Heart and vessels
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更新日期:2018-02-01 00:00:00
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doi:10.1007/s00380-004-0768-6
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doi:10.1007/s00380-010-0095-z
更新日期:2011-09-01 00:00:00
abstract::MicroRNAs (miRNAs) are short non-coding RNAs that regulate gene expression. It seems that microRNA-21 (miR-21) and Visfatin, a novel adipocytokine, play roles in inflammation and atherosclerosis. The aim of this study was to investigate the association of miR-21 with Visfatin, inflammation, atherosclerosis and acute c...
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abstract::Activation of mineralocorticoid receptor antagonists (MRAs) is cardioprotective; however, this property is lost upon blockade or inactivation of adenosine (ADO) receptor A2b. In this study, we investigated whether the effects of MRAs are mediated by an interaction between cardioprotective ADO receptors A1 and A3. Spir...
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abstract::This study was designed to investigate the effect of low-dose nesiritide on renal function and major cardiac events in patients with acute decompensated heart failure following acute myocardial infarction. Sixty patients were randomized into nesiritide (loading dose 0.5 microg/kg, maintenance dose 0.0075 microg/kg/min...
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abstract::Treatment with inhibitors of 3-hydroxyl-3-methylglutaryl coenzyme A reductase (statins) reduces the incidence of cardiovascular events, but it is unclear whether the beneficial effects are mediated solely by their lipid-lowering properties. We therefore investigated whether atorvastatin reduces inflammation and oxidat...
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abstract::The vascular endothelial growth factor (VEGF) family of peptides and caveolins (CAVs) are reported to contribute, in early graft failure in patients, a coronary artery bypass grafting (CABG). To investigate the possible association of ultimate luminal occlusion to VEGFs and CAVs expression, a functional analysis (base...
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abstract::A 65-year-old man was admitted with chest pain. A diagnosis of spastic angina was made because of symptoms of recurrent anginal attacks associated with ST-segment elevations in the electrocardiogram. A selective coronary arteriogram revealed a 90% diameter narrowing of the proximal left anterior descending coronary ar...
journal_title:Heart and vessels
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doi:10.1007/BF02058361
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abstract::Aortic dissection is a life-threatening cardiovascular disease with high in-hospital mortality. However, the risk factors of aortic dissection have not been fully elucidated. Obstructive sleep apnea (OSA) has been increasingly recognized as an independent cardiovascular risk factor. Among the underlying mechanisms to ...
journal_title:Heart and vessels
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abstract:BACKGROUND:Predictors of left ventricular ejection fraction (LVEF) improvement after transcatheter aortic valve replacement (TAVR) in patients with a preoperative reduced LVEF are limited. OBJECTIVES:This study aimed to investigate the relationship between preprocedural valuvuloarterial impedance (ZVa), which represen...
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