1
|
Heiden P, Weigel DT, Loução R, Hamisch C, Gündüz EM, Ruge MI, Kuhn J, Visser-Vandewalle V, Andrade P. Connectivity in deep brain stimulation for self-injurious behavior: multiple targets for a common network? Front Hum Neurosci 2022; 16:958247. [PMID: 36092644 PMCID: PMC9448926 DOI: 10.3389/fnhum.2022.958247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Self-injurious behavior (SIB) is associated with diverse psychiatric conditions. Sometimes (e.g., in patients with autism spectrum disorder or acquired brain injuries), SIB is the most dominant symptom, severely restricting the psychosocial functioning and quality of life of the patients and inhibiting appropriate patient care. In severe cases, it can lead to permanent physical injuries or even death. Primary therapy consists of medical treatment and if implementable, behavioral therapy. For patients with severe SIB refractory to conventional therapy, neuromodulation can be considered as a last recourse. In scientific literature, several successful lesioning and deep brain stimulation targets have been described that can indicate a common underlying neuronal pathway. The objectives of this study were to evaluate the short- and long-term clinical outcome of patients with severe, therapy refractory SIB who underwent DBS with diverse underlying psychiatric disorders and to correlate these outcomes with the activated connectivity networks. We retrospectively analyzed 10 patients with SIB who underwent DBS surgery with diverse psychiatric conditions including autism spectrum disorder, organic personality disorder after hypoxic or traumatic brain injury or Tourette syndrome. DBS targets were chosen according to the underlying disorder, patients were either stimulated in the nucleus accumbens, amygdala, posterior hypothalamus, medial thalamus or ventrolateral thalamus. Clinical outcome was measured 6 months after surgery and at long-term follow-up after 10 or more years using the Early Rehabilitation Barthel index (ERBI) and time of restraint. Connectivity patterns were analyzed using normative connectome. Based on previous literature the orbitofrontal cortex, superior frontal gyrus, the anterior cingulate cortex, the amygdala and the hippocampus were chosen as regions of interest. This analysis showed a significant improvement in the functionality of the patients with DBS in the short- and long-term follow-up. Good clinical outcome correlated with higher connectivity to the amygdala and hippocampus. These findings may suggest a common pathway, which can be relevant when planning a surgical procedure in patients with SIB.
Collapse
Affiliation(s)
- Petra Heiden
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Department of Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Daniel Tim Weigel
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Ricardo Loução
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Department of Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Christina Hamisch
- Department of Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Enes M. Gündüz
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Maximilian I. Ruge
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Jens Kuhn
- Department of Psychiatry and Psychotherapy, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Department of Psychiatry, Psychotherapy and Psychosomatic, Johanniter Hospital Oberhausen, Oberhausen, Germany
| | - Veerle Visser-Vandewalle
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Pablo Andrade
- Department of Stereotactic and Functional Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- *Correspondence: Pablo Andrade
| |
Collapse
|
2
|
Ahmed GK, Darwish AM, Khalifa H, Haridy NA. Relationship between Attention Deficit Hyperactivity Disorder and epilepsy: a literature review. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2022. [DOI: 10.1186/s41983-022-00482-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Attention Deficit Hyperactivity Disorder (ADHD) is a prevalent neurological disorder. ADHD has been linked to epilepsy.
Main body
ADHD was found to be present in 30–40% of epileptic children. Researchers have developed numerous theories to explain how and why ADHD and epilepsy coexist. Whether ADHD and epilepsy symptoms are caused by co-occurring psychiatric disorders or by the temporary effects of epileptic discharges or by antiepileptic medicines is critical to consider. Diagnosis and treatment of individuals with ADHD and epilepsy are complicated and challenging from the clinical base.
Conclusions
Comorbidity between ADHD and epilepsy is still challenging to understand. The two diseases have a bidirectional link, so the association may not be coincidental. A disputable point is whether co-occurring ADHD and epilepsy symptoms represent a comorbid psychiatric disorder or are the epileptic discharges’ temporary effects, and are they related to antiepileptic drugs (AEDs). It is recommended to follow up with children with epilepsy or ADHD as they may develop comorbidity after a while.
Collapse
|
3
|
de Leeuw TG, van der Zanden T, Ravera S, Felisi M, Bonifazi D, Tibboel D, Ceci A, Kaguelidou F, de Wildt SN. Diagnosis and Treatment of Chronic Neuropathic and Mixed Pain in Children and Adolescents: Results of a Survey Study amongst Practitioners. CHILDREN-BASEL 2020; 7:children7110208. [PMID: 33147808 PMCID: PMC7694093 DOI: 10.3390/children7110208] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 10/30/2020] [Indexed: 12/16/2022]
Abstract
Validated diagnostic tools to diagnose chronic neuropathic and mixed pain in children are missing. Therapeutic options are often derived from therapeutics for adults. To investigate the international practice amongst practitioners for the diagnosis and treatment of chronic, neuropathic pain in children and adolescents, we performed a survey study among members of learned societies or groups whose members are known to treat pediatric pain. The survey included questions concerning practitioners and practice characteristics, assessment and diagnosis, treatment and medication. We analyzed 117 returned questionnaires, of which 41 (35%) were fully completed and 76 (65%) were partially completed. Most respondents based the diagnosis of neuropathic pain on physical examination (68 (58.1%)), patient history (67 (57.3%)), and underlying disease (59 (50.4%)) combined. Gabapentin, amitriptyline, and pregabalin were the first-choice treatments for moderate neuropathic pain. Tramadol, ibuprofen, amitriptyline, and paracetamol were the first-choice treatments for moderate mixed pain. Consensus on the diagnostic process of neuropathic pain in children and adolescents is lacking. Drug treatment varies widely for moderate, severe neuropathic, and mixed pain. Hence, diagnostic tools and therapy need to be harmonized and validated for use in children.
Collapse
Affiliation(s)
- Thomas G. de Leeuw
- Department of Pediatric Anesthesia and Pain Medicine, Erasmus MC-Sophia Children’s Hospital, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
- Correspondence:
| | - Tjitske van der Zanden
- Intensive Care and Pediatric Surgery, Erasmus MC-Sophia Children’s Hospital, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.v.d.Z.); (D.T.); (S.N.d.W.)
| | - Simona Ravera
- Pharmaceutical Research Management Srl, Via Luigi Porta 14, 27100 Pavia, Italy; (S.R.); (M.F.)
| | - Mariagrazia Felisi
- Pharmaceutical Research Management Srl, Via Luigi Porta 14, 27100 Pavia, Italy; (S.R.); (M.F.)
| | - Donato Bonifazi
- Consorzio per Valutazioni Biologiche e Farmacologiche, Via Putignani 178, 70122 Bari, Italy;
| | - Dick Tibboel
- Intensive Care and Pediatric Surgery, Erasmus MC-Sophia Children’s Hospital, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.v.d.Z.); (D.T.); (S.N.d.W.)
| | - Adriana Ceci
- Fondazione per la Ricerca Farmacologica Gianni Benzi onlus, Via Abate Eustasio 30, 70010 Valenzano, Italy;
| | - Florentia Kaguelidou
- Centre d’Investigations Cliniques, INSERM CIC1426, Hôpital Robert Debré, APHP, Université de Paris, UMR-1123 ECEVE, 75019 Paris, France;
| | - Saskia N. de Wildt
- Intensive Care and Pediatric Surgery, Erasmus MC-Sophia Children’s Hospital, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands; (T.v.d.Z.); (D.T.); (S.N.d.W.)
- Department of Pharmacology and Toxicology, Radboud Institute Health Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | | |
Collapse
|
4
|
Filipović L, Filipović V, Walker CW, Williams C, Preisdanz HE, Watson JE. Modeling carbamazepine transport in wastewater-irrigated soil under different land uses. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:1011-1019. [PMID: 33016487 DOI: 10.1002/jeq2.20074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/25/2020] [Accepted: 03/05/2020] [Indexed: 06/11/2023]
Abstract
The pharmaceutical compound carbamazepine (CBZ) is a contaminant of emerging concern. Wastewater irrigation can be a long-term, frequent source of CBZ; therefore, understanding the fate and transport of CBZ as a result of wastewater reuse practices has important environmental implications. The objective of this study was to estimate long-term soil transport of CBZ originating from treated wastewater irrigation on plots under different land uses. Field data from a previous study comparing CBZ concentrations in soil under different land uses were used in numerical modeling with HYDRUS-2D for the estimation of CBZ soil transport during 20 yr of irrigation with treated wastewater. This study showed high CBZ retention in soil under all investigated land uses. Adequate modeling results were obtained by using soil organic carbon-water partitioning coefficient (Koc ) for the CBZ linear sorption coefficient (Kd ) estimation, yet an underestimation of CBZ concentration in soil was still noted. Thus, results suggest that, although highly important, organic carbon content is probably not the only soil property governing CBZ sorption at this site, indicating the potential research perspective. Modeling results showed wastewater irrigation containing CBZ for 20 yr increased the CBZ concentration in the soil profile and its vertical movement, with the slowest vertical transport rate occurring on the forested plots. Overall results suggest that a beneficial management practice could be to increase soil organic carbon (e.g., compost addition) when using treated wastewater for irrigation in order to retain CBZ in the surface soil and thus limit its leaching through the soil profile.
Collapse
Affiliation(s)
- Lana Filipović
- Faculty of Agriculture, Dep. of Soil Amelioration, Univ. of Zagreb, Svetošimunska 25, Zagreb, 10000, Croatia
| | - Vilim Filipović
- Faculty of Agriculture, Dep. of Soil Amelioration, Univ. of Zagreb, Svetošimunska 25, Zagreb, 10000, Croatia
| | - Charles W Walker
- Dep. of Crop and Soil Sciences, Pennsylvania State Univ., 116 Agricultural Sciences and Industry Building, University Park, PA, 16802, USA
| | - Clinton Williams
- USDA-ARS, U.S. Arid Land Agricultural Research Center, 21881 N. Cardon Ln., Maricopa, AZ, 85238, USA
| | - Heather E Preisdanz
- Dep. of Agricultural and Biological Engineering, Pennsylvania State Univ., 252 Agricultural Engineering Building, Shortlidge Rd., University Park, PA, 16802, USA
| | - John E Watson
- Dep. of Ecosystem Science and Management, Pennsylvania State Univ., 116 Agricultural Sciences and Industry Building, University Park, PA, 16802, USA
| |
Collapse
|
5
|
Pediatric glossopharyngeal neuralgia: a comprehensive review. Childs Nerv Syst 2019; 35:395-402. [PMID: 30361762 DOI: 10.1007/s00381-018-3995-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 10/10/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Debilitating facial pain can seriously affect an individual's daily living. Given that the pathophysiology behind neuropathic and myofascial pain is not fully understood, when chronic facial pain goes undiagnosed, it has been proposed that one of the two is the likely cause. Since their discovery, glossopharyngeal neuralgia (GN) and Eagle's syndrome have been considered mostly conditions afflicting the adult population. However, when pediatric patients present with symptoms resembling GN or Eagle's syndrome, physicians are less apt to include these as a differential diagnosis simply due to the low prevalence and incidence in the pediatric population. MATERIALS AND METHODS A literature review was performed with the aim to better understand the history of reported cases and to provide a comprehensive report of the anatomical variations that lead to these two conditions as well as the way these variations dictated medical and surgical management. Articles were obtained through Google Scholar and PubMed. Search criteria included key phrases such as pediatric glossopharyngeal neuralgia and pediatric Eagle syndrome. These key phrases were searched independently. PubMed was searched primarily then cross-referenced articles were found via Google Scholar. Results from non-English articles were excluded. RESULTS A total of 58 articles were reviewed. Most of the articles focused on adult glossopharyngeal neuralgia, and the majority was comprised of case reports. When searched via PubMed, a total of 16 articles and 2 articles returned for glossopharyngeal neuralgia and Eagle's syndrome, respectively. After criteria selection and cross-referencing, a total of seven articles were found with respect to pediatric glossopharyngeal neuralgia. CONCLUSIONS While they are rare conditions, there are multiple etiologies that lead to the debilitating symptoms of GN and Eagle's syndrome. The clinical anatomy proved notable as multiple causes of GN and Eagle's syndrome are due to variation in the anatomy of the neurovascular structures surrounding the glossopharyngeal nerve, an elongated styloid process, a calcified stylohyoid ligament as well as a calcified stylomandibular ligament. Due to the success of different treatment modalities, the treatment of choice is dependent on clinical judgment.
Collapse
|
6
|
Karlsson Lind L, Wide K, Wettermark B, von Euler M. Utilization of Antiepileptic Medicines in Swedish Children and Adolescents with Different Diagnoses. Basic Clin Pharmacol Toxicol 2018; 123:94-100. [DOI: 10.1111/bcpt.12981] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 01/31/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Linnéa Karlsson Lind
- Department of Clinical Science and Education; Södersjukhuset; Karolinska Institutet; Stockholm Sweden
- The Health and Medical Care Administration; Stockholm County Council; Stockholm Sweden
| | - Katarina Wide
- Department of Pediatrics; CLINTEC; Karolinska Institutet; Stockholm Sweden
| | - Björn Wettermark
- The Health and Medical Care Administration; Stockholm County Council; Stockholm Sweden
- Centre for Pharmacoepidemiology (CPE); Department of Medicine; Clinical Epidemiology Unit Solna; Karolinska Institutet; Stockholm Sweden
| | - Mia von Euler
- Department of Clinical Science and Education; Södersjukhuset; Karolinska Institutet; Stockholm Sweden
- Division of Clinical Pharmacology; Karolinska University Hospital Solna; Stockholm Sweden
- Karolinska Institutet Stroke Research Network at Södersjukhuset; Stockholm Sweden
| |
Collapse
|
7
|
Rousseau V, Morelle M, Arriuberge C, Darnis S, Chabaud S, Launay V, Thouvenin S, Roumenoff-Turcant F, Metzger S, Tourniaire B, Marec-Berard P. Efficacy and Tolerance of Lidocaine 5% Patches in Neuropathic Pain and Pain Related to Vaso-occlusive Sickle Cell Crises in Children: A Prospective Multicenter Clinical Study. Pain Pract 2018; 18:788-797. [DOI: 10.1111/papr.12674] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Vanessa Rousseau
- Emergency Department and Pediatric Resuscitation; Civil Hospitals of Lyon; Mother-Child Hospital; Bron France
- Léon Bérard Center; Institute of Hematology and Pediatric Oncology; Lyon France
| | - Magali Morelle
- Léon Bérard Center; Department of Clinical Research and Innovation; Lyon France
- GATE (Analysis and Economic Theory Group); UMR5824; Lyon University; Lyon France
| | - Céline Arriuberge
- Pediatric Analgesia Unit; Trousseau University Hospital Center; Paris France
| | - Sophie Darnis
- Léon Bérard Center; Department of Clinical Research and Innovation; Lyon France
| | - Sylvie Chabaud
- Léon Bérard Center; Department of Clinical Research and Innovation; Lyon France
| | - Valérie Launay
- Emergency Department and Pediatric Resuscitation; Civil Hospitals of Lyon; Mother-Child Hospital; Bron France
| | - Sandrine Thouvenin
- Department of Hematology and Pediatric Oncology; University Hospital Center; Saint-Etienne France
| | | | - Séverine Metzger
- Léon Bérard Center; Department of Clinical Research and Innovation; Lyon France
| | - Barbara Tourniaire
- Pediatric Analgesia Unit; Trousseau University Hospital Center; Paris France
| | | |
Collapse
|
8
|
Liang SHY, Yang YH, Kuo TY, Liao YT, Lin TC, Lee Y, McIntyre RS, Kelsen BA, Wang TN, Chen VCH. Suicide risk reduction in youths with attention-deficit/hyperactivity disorder prescribed methylphenidate: A Taiwan nationwide population-based cohort study. RESEARCH IN DEVELOPMENTAL DISABILITIES 2018; 72:96-105. [PMID: 29121517 DOI: 10.1016/j.ridd.2017.10.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 10/09/2017] [Accepted: 10/25/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Attention-deficit/hyperactivity disorder (ADHD) youths have increased suicide risk. Nevertheless, the beneficial effects of methylphenidate (MPH) on suicide attempt have received relatively little attention. AIMS To investigate the MPH usage and the risk of suicide attempt among ADHD youths. METHODS We identified 84,898 youths less than 18 years old with ADHD diagnosis between 1997 and 2013 from National Health Insurance, and examined whether MPH use affected suicide attempt risk using Cox proportional-hazards models. OUTCOME AND RESULTS Among ADHD youths, reduction of suicide risk was found in patients prescribed 90-180days of MPH after adjusting for confounding factors (hazard ratio (HR): 0.41, 95% confidence interval (CI): 0.19-0.90) and a greater reduction in those prescribed more than 180days of MPH (HR: 0.28, 95% CI: 0.17-0.48). CONCLUSIONS AND IMPLICATIONS We observed a 59% suicide attempt risk reduction among ADHD youths prescribed between 90 and 180days and a 72% risk reduction in those prescribed more than 180days of MPH. The protective benefit observed by the group prescribed MPH for longer duration underscores the importance of psychoeducation and compliance enhancement as part of ADHD management. Indication bias is identified as a limitation of this study, and future self-case control study to investigate the association between suicide attempt and ADHD medication is suggested. WHAT THIS PAPER ADDS This nationwide population-based cohort study showed that among ADHD youths, reduction of suicide risk was observed in patients prescribed MPH for duration 90days and longer, underscoring the importance of appropriate ADHD pharmacotherapy and enhancing drug compliance.
Collapse
Affiliation(s)
- Sophie Hsin-Yi Liang
- Department of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC; Department of Child Psychiatry, Chang Gung Memorial Hospital at Taoyuan, Taoyuan, Taiwan, ROC
| | - Yao-Hsu Yang
- Department of Traditional Chinese Medicine, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan, ROC; Health Information and Epidemiology Laboratory of Chang Gung Memorial Hospital, Chiayi, Taiwan, ROC; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
| | - Ting-Yu Kuo
- Health Information and Epidemiology Laboratory of Chang Gung Memorial Hospital, Chiayi, Taiwan, ROC
| | - Yin-To Liao
- Department of Psychiatry, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC; Department of Psychiatry, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC
| | - Tzu-Chin Lin
- Department of Psychiatry, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC; Department of Psychiatry, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC
| | - Yena Lee
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Canada
| | - Roger S McIntyre
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, Canada; Department of Psychiatry and Pharmacology, University of Toronto, Toronto, Canada
| | - Brent A Kelsen
- Language Center, National Taipei University, New Taipei City, Taiwan, ROC
| | - Tsu-Nai Wang
- Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC
| | - Vincent Chin-Hung Chen
- Department of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC; Chang Gung Medical Foundation, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan, ROC.
| |
Collapse
|
9
|
Swatzyna RJ, Tarnow JD, Proler ML, Roark AJ, MacInerney EK, Kozlowski GP. Retrospective Analysis of Nonepileptic Patients With Isolated Epileptiform Discharges Treated With Anticonvulsants. Clin EEG Neurosci 2017; 48:322-326. [PMID: 28771044 DOI: 10.1177/1550059417695896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Many antiepileptic drugs (AEDs) have been tested on nonepileptic patients with a variety of diagnoses. The Food and Drug Administration has only approved certain AEDs for a small number of psychiatric conditions. There are few studies of nonepileptic patients that recommend an empirical trial of AEDs when isolated epileptiform discharges (IEDs) are identified in the electroencephalogram (EEG). However, no trials have been published. The purpose of this study is to evaluate the outcome of treating nonepileptic patients with AEDs when IEDs are present. Refractory cases were reviewed from a multidisciplinary practice whose EEG readings contained IEDs and were subsequently medicated with anticonvulsants by the clinic's psychiatrist. The psychiatrist's progress notes were assessed to determine the impact of adding anticonvulsants based on parent reports, teacher reports, and clinical observation. The final sample was composed of 76 refractory cases. Of the 76 patients treated with anticonvulsants, the majority were found to be improved in follow-up progress notes: 65 improved (85.53%), 6 unchanged (7.89%), and 5 more severe (6.58%). These observational findings suggest that further studies will be needed to show that IEDs may predict positive treatment outcome to anticonvulsant medication and act as a step toward an evidence-based treatment. Also, EEG screening may prove to be useful for refractory cases regardless of age, gender, or diagnosis.
Collapse
Affiliation(s)
| | - Jay D Tarnow
- 1 Tarnow Center for Self-Management, Houston, TX, USA
| | - Meyer L Proler
- 2 Department of Neurology, Baylor College of Medicine, Houston, TX, USA
| | | | | | - Gerald P Kozlowski
- 3 Department of Clinical Psychology, Saybrook University, Oakland, CA, USA
| |
Collapse
|
10
|
Baftiu A, Johannessen Landmark C, Rusten IR, Feet SA, Johannessen SI, Larsson PG. Changes in utilisation of antiepileptic drugs in epilepsy and non-epilepsy disorders-a pharmacoepidemiological study and clinical implications. Eur J Clin Pharmacol 2016; 72:1245-1254. [PMID: 27411937 DOI: 10.1007/s00228-016-2092-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/01/2016] [Indexed: 12/29/2022]
Abstract
PURPOSE The purpose of this study was to investigate changes in utilisation of antiepileptic drugs (AEDs) in epilepsy and non-epilepsy disorders in Norway and furthermore to study the retention rates of the most commonly used AEDs in these indications in long-term use. METHODS The data consisted of all prescriptions of AEDs from Norwegian pharmacies in the Norwegian Prescription Database (NorPD) (2004-2012). Variables included anonymous data regarding age, gender, diagnosis specific reimbursement codes and utilisation of AEDs. RESULTS In recent years (2008-2012), the utilisation of AEDs in non-epilepsy disorders accounted for 45-53 % of the total use. In epilepsy, the most commonly used AED was lamotrigine, followed by levetiracetam, carbamazepine and valproate. Lamotrigine was also the predominant AED used in psychiatry, while pregabalin and gabapentin were mostly used in neuropathic pain. In migraine, topiramate predominated but accounted for <1 % of the total utilisation of AEDs. The majority of prescriptions were by general practitioners and only 20 % by specialists. Regardless of indication, newer AEDs had higher retention rates (34-48 %) and were used for a longer period before discontinuation. CONCLUSIONS The use of AEDs in non-epilepsy disorders is increasing and accounted for 53 % in 2012. Newer AEDs were predominantly used and demonstrated higher retention rates than older AEDs in all indications. This nationwide study demonstrates an increased exposure to AEDs in new patient groups, and details in prescription patterns and clinical and safety considerations should be closely monitored. This contributes to long-term post-marketing data of AED and accordingly improved pharmacovigilance.
Collapse
Affiliation(s)
- Arton Baftiu
- Programme for Pharmacy, Department of Life Sciences and Health, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - Cecilie Johannessen Landmark
- Programme for Pharmacy, Department of Life Sciences and Health, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Oslo, Norway. .,The National Center for Epilepsy, Sandvika, Oslo University Hospital, Oslo, Norway. .,Department of Pharmacology, Oslo University Hospital, Oslo, Norway.
| | - Ida Rudberg Rusten
- Programme for Pharmacy, Department of Life Sciences and Health, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - Silje Andrea Feet
- Programme for Pharmacy, Department of Life Sciences and Health, Faculty of Health Sciences, Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - Svein I Johannessen
- The National Center for Epilepsy, Sandvika, Oslo University Hospital, Oslo, Norway.,Department of Pharmacology, Oslo University Hospital, Oslo, Norway
| | - Pål G Larsson
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| |
Collapse
|
11
|
Are children affected by epileptic neuropsychiatric comorbidities? Epilepsy Behav 2014; 38:8-12. [PMID: 24239433 DOI: 10.1016/j.yebeh.2013.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 10/01/2013] [Accepted: 10/02/2013] [Indexed: 11/22/2022]
Abstract
Childhood-onset epilepsy is associated with psychiatric and cognitive difficulties and with poor social outcomes in adulthood. Some antiepileptic drugs adversely affect behavior in susceptible children with easy-to-control or refractory epilepsies, contributing to a high risk of psychological and psychiatric disturbance. Studies had demonstrated that patients with benign rolandic epilepsy and absence epilepsy had more aggressive behavior, depression, and anxiety disorders than control children. Psychiatric comorbidities are strongly associated with a poor long-term health-related quality of life in childhood-onset epilepsy, which suggests that comprehensive epilepsy care must include screening and long-term treatment for these conditions, even if seizures remit.
Collapse
|
12
|
Krasowski MD, McMillin GA. Advances in anti-epileptic drug testing. Clin Chim Acta 2014; 436:224-36. [PMID: 24925169 DOI: 10.1016/j.cca.2014.06.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/29/2014] [Accepted: 06/03/2014] [Indexed: 12/12/2022]
Abstract
In the past twenty-one years, 17 new antiepileptic drugs have been approved for use in the United States and/or Europe. These drugs are clobazam, ezogabine (retigabine), eslicarbazepine acetate, felbamate, gabapentin, lacosamide, lamotrigine, levetiracetam, oxcarbazepine, perampanel, pregabalin, rufinamide, stiripentol, tiagabine, topiramate, vigabatrin and zonisamide. Therapeutic drug monitoring is often used in the clinical dosing of the newer anti-epileptic drugs. The drugs with the best justifications for drug monitoring are lamotrigine, levetiracetam, oxcarbazepine, stiripentol, and zonisamide. Perampanel, stiripentol and tiagabine are strongly bound to serum proteins and are candidates for monitoring of the free drug fractions. Alternative specimens for therapeutic drug monitoring are saliva and dried blood spots. Therapeutic drug monitoring of the new antiepileptic drugs is discussed here for managing patients with epilepsy.
Collapse
Affiliation(s)
- Matthew D Krasowski
- Department of Pathology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, United States.
| | - Gwendolyn A McMillin
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, United States; ARUP Institute for Clinical and Experimental Pathology, ARUP Laboratories Inc., Salt Lake City, UT, United States
| |
Collapse
|
13
|
Kachko L, Ben Ami S, Lieberman A, Shor R, Tzeitlin E, Efrat R. Neuropathic pain other than CRPS in children and adolescents: incidence, referral, clinical characteristics, management, and clinical outcomes. Paediatr Anaesth 2014; 24:608-13. [PMID: 24612208 DOI: 10.1111/pan.12375] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/27/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES Chronic pain in children and adolescents is common, but proportion of neuropathic pain (NP), a heterogeneous group of diseases with major impact on health-related quality of life, significant economic burden, and limited treatment options, is unclear. Many studies have focused only on complex regional pain syndrome (CRPS). Our aim was to examine the incidence, clinical features, management, and outcome of non-CRPS NP in patients referred to a chronic pediatric pain clinic (CPPC) at a tertiary-care hospital. METHODS Retrospective analyses of the patient's files with non-CRPS NP from 2008 until 2012. RESULTS Twenty patients (9.9-22.0 years; 10.7% of new referrals) were treated with non-CRPS NP (postoperative 8/20, trauma-related 5/20, disease-related 7/20). The number of consultations performed and the number of medications used before CPPC were significantly higher than in CPPC (Z = 0.75, P = 0.005; Z = 1.68, P = 0.003; respectively, Wilcoxon test). The number of diagnostic procedures was not statistically significant. Invasive treatments were used in 50% of patients. Full/partial recovery was accomplished in 95%. anova with repeated measures yielded a highly significant difference between the initial and final visual analog scale (VAS) scores (8.2 ± 1.3; 1.19 ± 2.01, respectively; P < 0.001), and no effect of age, gender, time needed for referral to CPPC, and patient's categories on the change in VAS. CONCLUSIONS Better understanding of the medical profile of pediatric patients with non-CRPS NP is crucial to timely and correct diagnosis and effective management, but even children with delayed diagnosis still have a good outcome. The management of this condition by an experienced team is recommended.
Collapse
Affiliation(s)
- Ludmyla Kachko
- Chronic Pain Clinic, Pain Treatment Service, Schneider Children's Medical Center of Israel (SCMCI), Petah Tiqwa, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Anesthesia, Schneider Children's Medical Center of Israel (SCMCI), Petah Tiqwa, Israel
| | | | | | | | | | | |
Collapse
|
14
|
Williams CF, Watson JE, Nelson SD. Comparison of equilibrium and non-equilibrium distribution coefficients for the human drug carbamazepine in soil. CHEMOSPHERE 2014; 95:166-173. [PMID: 24050717 DOI: 10.1016/j.chemosphere.2013.08.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/08/2013] [Accepted: 08/16/2013] [Indexed: 06/02/2023]
Abstract
The distribution coefficient (KD) for the human drug carbamazepine was measured using a non-equilibrium technique. Repacked soil columns were prepared using an Airport silt loam (Typic Natrustalf) with an average organic matter content of 2.45%. Carbamazepine solutions were then leached through the columns at 0.5, 1.0 and 1.5 mL min(-1) representing average linear velocities of 1.8, 3.5 and 5.3 cm h(-1) respectively. Each flow rate was replicated three times and three carbamazepine pulses were applied to each column resulting in a total of 9 columns with 27 total carbamazepine pulses. Breakthrough curves were used to determine KD using the parameter fitting software CXTFIT. Results indicate that as flow rate decreased from 5.3 to 1.8 cm h(-1), KD increased an average of 21%. Additionally, KD determined by column leaching (14.7-22.7 L kg(-1)) was greater than KD determined by a 2h batch equilibrium adsorption (12.6 L kg(-1)). Based on these KD's carbamazepine would be generally characterized as non-mobile in the soil investigated. However, repeated carbamazepine applications resulted in an average 22% decrease in KD between the first and third applications. Decreasing KD is attributed to differences in sorption site kinetics and carbamazepine residence time in contact with the soil. This would indicate that the repeated use of reclaimed wastewater at high application rates for long-term irrigation or groundwater recharge has the potential to lead to greater transport of carbamazepine than KD determined by batch equilibrium would predict.
Collapse
Affiliation(s)
- C F Williams
- USDA-ARS, US Arid Land Agricultural Research Center, 21881 N. Cardon Lane, Maricopa, AZ 85138, United States.
| | | | | |
Collapse
|
15
|
Drugs for chronic pain in children: a commentary on clinical practice and the absence of evidence. Pain Res Manag 2013; 18:47-50. [PMID: 23457686 DOI: 10.1155/2013/402863] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Pediatric chronic pain is widespread, under-recognized and undertreated. Best management usually involves a multimodal approach coordinated by a multidisciplinary team. The present commentary specifically discusses common pharmacological approaches to chronic pain in children, identifies gaps in knowledge and suggests several research directions that would benefit future clinical care.
Collapse
|
16
|
Abstract
There are difficulties in assessing, managing, and evaluating neuropathic pain in dying children, particularly those with neurological impairment. Neuropathic pain in children often presents differently to how it presents in the adult population. Comprehensive assessment as well as pharmacological and non-pharmacological interventions are crucial to its successful management and frequently require input from an interdisciplinary team. Notwithstanding the need for further research, this paper brings together research papers, reviews, and clinical guidelines to present an exploration of existing evidence regarding care for children with neuropathic pain and their families.
Collapse
Affiliation(s)
- Catherine Hyde
- Palliative Care, Marymount Hospice/St Patrick's Hospital, Curraheen Road, Cork, Ireland
| | - Jayne Price
- Trinity College Dublin, and Senior Teaching Fellow (Children's Nursing), School of Nursing and Midwifery, Queen's University Belfast, Belfast, Northern Ireland
| | - Honor Nicholl
- Project Lead Children's Palliative Care, School of Nursing and Midwifery, Trinity College Dublin, Dublin 2, Ireland
| |
Collapse
|
17
|
Fournier-Charrière E, Marec-Berard P, Schmitt C, Delmon P, Ricard C, Rachieru P. Prise en charge des douleurs neuropathiques chez l’enfant : recommandations de bonne pratique clinique. Arch Pediatr 2011; 18:905-13. [DOI: 10.1016/j.arcped.2011.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 05/10/2011] [Indexed: 01/21/2023]
|
18
|
Leo RJ, Srinivasan SP, Parekh S. The Role of the Mental Health Practitioner in the Assessment and Treatment of Child and Adolescent Chronic Pain. Child Adolesc Ment Health 2011; 16:2-8. [PMID: 32847226 DOI: 10.1111/j.1475-3588.2010.00578.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chronic and recurrent benign pain complaints are common among children and adolescents. Although many young persons with chronic pain adapt well, a small, but significant, proportion experience marked functional deficits. Pain can produce life disruptions, e.g. impeding activities and maturation, and interferes with family functioning. Conventional medically-based approaches have been inadequate in addressing chronic pain and its sequelae. Instead, effective management requires an interdisciplinary approach involving paediatricians and mental health practitioners working collaboratively to treat psychiatric comorbidities, enhance the patient's functional adaptation, restore the child or adolescent's maturational and social capabilities and reduce family disruptions.
Collapse
Affiliation(s)
- Raphael J Leo
- Department of Psychiatry, State University of New York at Buffalo, School of Medicine and Biomedical Sciences, Erie County Medical Center, 462 Grider Street, Buffalo, New York 14215, USA. E-mail:
| | - Shiva Prakash Srinivasan
- Department of Psychiatry, State University of New York at Buffalo, School of Medicine and Biomedical Sciences, Erie County Medical Center, 462 Grider Street, Buffalo, New York 14215, USA. E-mail:
| | - Shrenik Parekh
- Department of Psychiatry, State University of New York at Buffalo, School of Medicine and Biomedical Sciences, Erie County Medical Center, 462 Grider Street, Buffalo, New York 14215, USA. E-mail:
| |
Collapse
|
19
|
Abstract
Neuropathic pain is relatively uncommon in children. Although some syndromes closely resemble those found in adults, the incidence and course of the condition can vary substantially in children, depending on developmental status and contextual factors. There are some neuropathic pain syndromes that are rare and relatively unique to the pediatric population. This article discusses the array of neuropathic pain conditions in children and available treatment strategies. Data are limited by small numbers and few randomized controlled trials. Research and clinical implications are discussed.
Collapse
Affiliation(s)
- Gary A Walco
- Department of Anesthesiology & Pain Medicine, Seattle Children's Hospital, WA 98105, USA.
| | | | | | | | | |
Collapse
|
20
|
Pandina GJ, Ness S, Polverejan E, Yuen E, Eerdekens M, Bilder RM, Ford L. Cognitive effects of topiramate in migraine patients aged 12 through 17 years. Pediatr Neurol 2010; 42:187-95. [PMID: 20159428 DOI: 10.1016/j.pediatrneurol.2009.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 07/30/2009] [Accepted: 10/12/2009] [Indexed: 11/29/2022]
Abstract
Neuropsychologic data are presented from a randomized, double-blind, placebo-controlled, multicenter study with placebo, topiramate 50 mg/day, and topiramate 100 mg/day. The Cambridge Neuropsychological Test Automated Battery (CANTAB) and cognitive adverse events were used to evaluate neurocognitive effects of topiramate. Topiramate 100 mg/day vs placebo was associated with slight statistically significant score increases, indicating slowing, from baseline vs placebo in three CANTAB measures: five-choice reaction time (P = 0.028), pattern recognition memory mean correct latency (P = 0.027), and rapid visual information processing mean latency (P = 0.040). No other patterns related to topiramate treatment were observed in measurements of learning, memory, and visual information processing, except for potential improvement with topiramate 100 mg/day vs placebo in spatial span total errors (accuracy test) (P = 0.040). The most common cognitive and neuropsychiatric adverse events with a higher incidence in the topiramate 50 and 100 mg/day groups vs placebo were anorexia (9% and 11% vs 3%), insomnia (9% and 3% vs 3%), fatigue (6% and 9% vs 6%), and dizziness (6% and 9% vs 0%). Thus, topiramate 100 mg/day was associated with modest increases in psychomotor reaction times. Learning, memory, and executive function were unchanged. The tolerability profile, including cognitive adverse events, appeared to be acceptable.
Collapse
Affiliation(s)
- Gahan J Pandina
- Psychiatry, Johnson & Johnson Pharmaceutical Research & Development L.L.C, Titusville, New Jersey 08560, USA.
| | | | | | | | | | | | | |
Collapse
|
21
|
Parisi P, Moavero R, Verrotti A, Curatolo P. Attention deficit hyperactivity disorder in children with epilepsy. Brain Dev 2010; 32:10-6. [PMID: 19369016 DOI: 10.1016/j.braindev.2009.03.005] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Revised: 03/17/2009] [Accepted: 03/22/2009] [Indexed: 10/20/2022]
Abstract
Attention deficit hyperactivity disorder (ADHD) is more frequent in children with epilepsy than in general pediatric population. Several factors may contribute to this comorbidity, including the underlying brain pathology, the chronic effects of seizures and of the epileptiform EEG discharges, and the effects of antiepileptic drugs. Symptoms of ADHD are more common in some specific types of epilepsies, such as frontal lobe epilepsy, childhood absence epilepsy and Rolandic epilepsy, and may antedate seizure onset in a significant proportion of cases. In epileptic children with symptoms of ADHD, treatment might become a challenge for child neurologists, who are forced to prescribe drugs combinations, to improve the long-term cognitive and behavioral prognosis. Treatment with psychotropic drugs can be initiated safely in most children with epilepsy and ADHD symptoms.
Collapse
Affiliation(s)
- Pasquale Parisi
- Department of Pediatrics - La Sapienza University of Rome, Rome, Italy
| | | | | | | |
Collapse
|
22
|
Vondracek P, Oslejskova H, Kepak T, Mazanek P, Sterba J, Rysava M, Gal P. Efficacy of pregabalin in neuropathic pain in paediatric oncological patients. Eur J Paediatr Neurol 2009; 13:332-6. [PMID: 18774740 DOI: 10.1016/j.ejpn.2008.06.011] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2008] [Revised: 06/24/2008] [Accepted: 06/27/2008] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the safety and efficacy of pregabalin in the management of chemotherapy-induced neuropathic pain in patients with childhood solid tumors and leukaemia. MATERIALS AND METHODS In an open-label study, 30 children (11 boys and 19 girls; mean age 13.5 years) who were treated for solid tumors and leukaemia, and developed a painful peripheral neuropathy, were medicated with pregabalin in the daily dose of 150-300 mg for 8 weeks. RESULTS Twenty-eight patients completed the 8-week follow-up. A significant and long-lasting pain relief was noted in 86% of these patients. Median VAS score decreased by 59% at the 8th week from baseline. Adverse effects were infrequent and transient. CONCLUSION The treatment with pregabalin resulted in a significant improvement in pain symptoms. The use of pregabalin in children is off-label so far. However, this drug seems to be a safe and effective remedy, which could significantly broaden the therapeutic spectrum in paediatric oncological patients suffering from neuropathic pain.
Collapse
Affiliation(s)
- Petr Vondracek
- Department of Paediatric Neurology, University Hospital and Masaryk University, Brno, Czech Republic.
| | | | | | | | | | | | | |
Collapse
|
23
|
Abstract
Significant advances in the assessment and management of acute pain in children have been made, and are supported by an increase in the availability and accessibility of evidence-based data. However, methodological and practical issues in the design and performance of clinical paediatric trials limit the quantity, and may influence the quality, of current data, which lags behind that available for adult practice. Collaborations within research networks, which incorporate both preclinical and clinical studies, may increase the feasibility and specificity of future trials. In early life, the developing nervous system responds differently to pain, analgesia, and injury, resulting in effects not seen in later life and which may have long-term consequences. Translational laboratory studies further our understanding of developmental changes in nociceptor pathway structure and function, analgesic pharmacodynamics, and the impact of different forms of injury. Chronic pain in children has a negative impact on quality of life, resulting in social and emotional consequences for both the child and the family. Despite age-related differences in many chronic pain conditions, such as neuropathic pain, management in children is often empirically based on data from studies in adults. There is a major need for further clinical research, training of health-care providers, and increased resources, to improve management and outcomes for children with chronic pain.
Collapse
Affiliation(s)
- S M Walker
- Portex Department of Anaesthesia, UCL Institute of Child Health and Great Ormond Street Hospital NHS Trust, 30 Guilford Street, London WC1N 1EH, UK.
| |
Collapse
|
24
|
Johannessen Landmark C. Antiepileptic drugs in non-epilepsy disorders: relations between mechanisms of action and clinical efficacy. CNS Drugs 2008; 22:27-47. [PMID: 18072813 DOI: 10.2165/00023210-200822010-00003] [Citation(s) in RCA: 218] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Antiepileptic drugs (AEDs) are used extensively to treat multiple non-epilepsy disorders, both in neurology and psychiatry. This article provides a review of the clinical efficacy of AEDs in non-epilepsy disorders based on recently published preclinical and clinical studies, and attempts to relate this efficacy to the mechanism of action of AEDs and pathophysiological processes associated with the disorders. Some newer indications for AEDs have been established, while others are under investigation. The disorders where AEDs have been demonstrated to be of clinical importance include neurological disorders, such as essential tremor, neuropathic pain and migraine, and psychiatric disorders, including anxiety, schizophrenia and bipolar disorder. Many of the AEDs have various targets of action in the synapse and have several proposed relevant mechanisms of action in epilepsy and in other disorders. Pathophysiological processes disturb neuronal excitability by modulating ion channels, receptors and intracellular signalling pathways, and these are targets for the pharmacological action of various AEDs. Attention is focused on the glutamatergic and GABAergic synapses. In psychiatric conditions such as schizophrenia and bipolar disorder, AEDs such as valproate, carbamazepine and lamotrigine appear to have clear roles based on their effect on intracellular pathways. On the other hand, some AEDs, e.g. topiramate, have efficacy for nonpsychiatric disorders including migraine, possibly by enhancing GABAergic and reducing glutamatergic neurotransmission. AEDs that seem to enhance GABAergic neurotransmission, e.g. tiagabine, valproate, gabapentin and possibly levetiracetam, may have a role in treating neurological disorders such as essential tremor, or anxiety disorders. AEDs with effects on voltage-gated sodium or calcium channels may be advantageous in treating neuropathic pain, e.g. gabapentin, pregabalin, carbamazepine, oxcarbazepine, lamotrigine and valproate. Co-morbid conditions associated with epilepsy, such as mood disorders and migraine, may often respond to treatment with AEDs. Other possible disorders where AEDs may be of clinical importance include cancer, HIV infection, drug and alcohol abuse, and also in neuroprotection. A future challenge is to evaluate the second-generation AEDs in non-epilepsy disorders and to design clinical trials to study their effects in such disorders in paediatric patients. Differentiation between the main mechanisms of action of the AEDs needs more consideration in drug selection for tailored treatment of the various non-epilepsy disorders.
Collapse
|
25
|
Affiliation(s)
- Mary G Burke
- Edgewood Center for Children and Families, San Francisco, California 94116, USA.
| |
Collapse
|
26
|
Millichap JG. Valproate-Induced Hyperammonemic Encephalopathy. Pediatr Neurol Briefs 2006. [DOI: 10.15844/pedneurbriefs-20-7-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|