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Kaufmann E, Peltola J, Colon AJ, Lehtimäki K, Majtanik M, Mai JK, Bóné B, Bentes C, Coenen V, Gil-Nagel A, Goncalves-Ferreira AJ, Ryvlin P, Taylor R, Brionne TC, Gielen F, Song S, Boon P. Long-term evaluation of anterior thalamic deep brain stimulation for epilepsy in the European MORE registry. Epilepsia 2024. [PMID: 38837755 DOI: 10.1111/epi.18003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 06/07/2024]
Abstract
OBJECTIVE Short-term outcomes of deep brain stimulation of the anterior nucleus of the thalamus (ANT-DBS) were reported for people with drug-resistant focal epilepsy (PwE). Because long-term data are still scarce, the Medtronic Registry for Epilepsy (MORE) evaluated clinical routine application of ANT-DBS. METHODS In this multicenter registry, PwE with ANT-DBS were followed up for safety, efficacy, and battery longevity. Follow-up ended after 5 years or upon study closure. Clinical characteristics and stimulation settings were compared between PwE with no benefit, improvers, and responders, that is, PwE with average monthly seizure frequency reduction rates of ≥50%. RESULTS Of 170 eligible PwE, 104, 62, and 49 completed the 3-, 4-, and 5-year follow-up, respectively. Most discontinuations (68%) were due to planned study closure as follow-up beyond 2 years was optional. The 5-year follow-up cohort had a median seizure frequency reduction from 16 per month at baseline to 7.9 per month at 5-year follow-up (p < .001), with most-pronounced effects on focal-to-bilateral tonic-clonic seizures (n = 15, 77% reduction, p = .008). At last follow-up (median 3.5 years), 41% (69/170) of PwE were responders. Unifocal epilepsy (p = .035) and a negative history of epilepsy surgery (p = .002) were associated with larger average monthly seizure frequency reductions. Stimulation settings did not differ between response groups. In 179 implanted PwE, DBS-related adverse events (AEs, n = 225) and serious AEs (n = 75) included deterioration in epilepsy or seizure frequency/severity/type (33; 14 serious), memory/cognitive impairment (29; 3 serious), and depression (13; 4 serious). Five deaths occurred (none were ANT-DBS related). Most AEs (76.3%) manifested within the first 2 years after implantation. Activa PC depletion (n = 37) occurred on average after 45 months. SIGNIFICANCE MORE provides further evidence for the long-term application of ANT-DBS in clinical routine practice. Although clinical benefits increased over time, side effects occurred mainly during the first 2 years. Identified outcome modifiers can help inform PwE selection and management.
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Affiliation(s)
- Elisabeth Kaufmann
- Department of Neurology, Epilepsy Center, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jukka Peltola
- Department of Neurology, Tampere University and Tampere University Hospital, Tampere, Finland
| | - Albert J Colon
- Academic Center for Epileptology Kempenhaeghe/Maastricht UMC+, Maastricht, The Netherlands
| | - Kai Lehtimäki
- Department of Neurosurgery, Tampere University Hospital and Tampere University, Tampere, Finland
| | - Milan Majtanik
- MRX-Brain GmbH, Düsseldorf, Germany
- Department of Informatics, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Jürgen K Mai
- MRX-Brain GmbH, Düsseldorf, Germany
- Department of Neuroanatomy, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Beata Bóné
- Medical School, University of Pécs, Pécs, Hungary
| | - Carla Bentes
- Department of Neurosciences and Mental Health, Centro de Referência para a área de Epilepsia Refratária (Epicare Member), Hospital de Santa Maria- Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
- Faculdade de Medicina, Centro de Estudos Egas Moniz, Universidade de Lisboa, Lisbon, Portugal
| | - Volker Coenen
- Department of Stereotactic and Functional Neurosurgery, Universitätsklinikum Freiburg, Freiburg, Germany
| | - Antonio Gil-Nagel
- Epilepsy Program, Neurology Department, Hospital Ruber Internacional, Madrid, Spain
| | | | - Philippe Ryvlin
- Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Rod Taylor
- MRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being, University of Glasgow, Glasgow, UK
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - Thomas C Brionne
- Clinical Department, Medtronic Internal Trading Sàrl, Tolochenaz, Switzerland
| | - Frans Gielen
- Medtronic Bakken Research Center, Maastricht, The Netherlands
| | - Shannon Song
- Department of Neurology, Medtronic Operational Headquarters, Minneapolis, Minnesota, USA
| | - Paul Boon
- Department of Neurology, Ghent University Hospital-Ghent University, Ghent, Belgium
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Yue M, Peng X, Chunlei G, Yi L, Shanshan G, Jifei S, Qingyan C, Bai Z, Yong L, Zhangjin Z, Peijing R, Jiliang F. Modulating the default mode network: Antidepressant efficacy of transcutaneous electrical cranial-auricular acupoints stimulation targeting the insula. Psychiatry Res Neuroimaging 2024; 339:111787. [PMID: 38295529 DOI: 10.1016/j.pscychresns.2024.111787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/22/2023] [Accepted: 01/08/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND Transcutaneous electrical cranial-auricular acupoint stimulation (TECAS) is a novel non-invasive therapy for major depressive disorder (MDD) that stimulates acupoints innervated by the trigeminal and auricular vagus nerves. However, there are few neuroimaging studies involving the TECAS for the treatment of MDD. Therefore, this study aimed to investigate the treatment response and neurological effects of TECAS using resting-state functional magnetic resonance imaging (rs-fMRI). METHOD A total of 34 patients with mild-to-moderate MDD and 34 demographically matched healthy controls (HCs) were recruited. After an eight-week treatment the primary outcome was clinical response, defined as a baseline-to-endpoint ≥ 50 % reduction in the 17-item Hamilton Depression Rating Scale (HAMD-17). The low-frequency fluctuations (ALFF) method were used to investigate the brain abnormalities of MDD patients and HCs, and altered brain networks were analyzed between pre- and post-treatment using seed-based functional connectivity (FC) analysis. RESULTS We found no significant differences in terms of gender, age, and years of education between the two groups. After treatment, the response rate was 58.82 %. Compared to HCs, MDD patients showed lower ALFF values in the left insula(t = -4.298,P < 0.005), the insula-based FC revealed in the right middle frontal gyrus (MFG)/ right superior frontal gyrus, orbital part (ORBsupmed) (t = -5.29,P < 0.005) and the right anterior cingulate gyrus (ACC)were decreased (t = -6.08,P < 0.005). Furthermore, Compared to pre-treatment, abnormal FC values in the ACC /orbital superior frontal gyrus (SFG) (t = 3.42,P < 0.005) and left superior frontal gyrus (SFG)/ supplement motor area (SMA) were enhanced (t = 3.34,P < 0.005). CONCLUSION TECAS exhibits antidepressant efficacy, particularly influencing the insula-based functional connections within the Default Mode Network (DMN) related to emotion processing in individuals with MDD.
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Affiliation(s)
- Ma Yue
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Xu Peng
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China
| | - Guo Chunlei
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Luo Yi
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Gao Shanshan
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Sun Jifei
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Chen Qingyan
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Zhenjun Bai
- College of Traditional Chinese Medicine Health Service, Shanxi Datong University, Datong, 037009, Shanxi Province, China
| | - Liu Yong
- Affiliated Hospital of Traditional Chinese Medicine, Southwest Medical University, 646000, Luzhou, China
| | - Zhang Zhangjin
- Department of Chinese Medicine, the University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen, China
| | - Rong Peijing
- Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China; Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, 100700, Beijing, China
| | - Fang Jiliang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, 100053, Beijing, China; Graduate School of China Academy of Chinese Medical Sciences, 100700, Beijing, China.
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Westwood SJ, Conti AA, Tang W, Xue S, Cortese S, Rubia K. Clinical and cognitive effects of external trigeminal nerve stimulation (eTNS) in neurological and psychiatric disorders: a systematic review and meta-analysis. Mol Psychiatry 2023; 28:4025-4043. [PMID: 37674019 PMCID: PMC10827664 DOI: 10.1038/s41380-023-02227-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/27/2023] [Accepted: 08/08/2023] [Indexed: 09/08/2023]
Abstract
This pre-registered (CRD42022322038) systematic review and meta-analysis investigated clinical and cognitive outcomes of external trigeminal nerve stimulation (eTNS) in neurological and psychiatric disorders. PubMed, OVID, Web of Science, Chinese National Knowledge Infrastructure, Wanfang, and VIP database for Chinese technical periodicals were searched (until 16/03/2022) to identify trials investigating cognitive and clinical outcomes of eTNS in neurological or psychiatric disorders. The Cochrane Risk of Bias 2.0 tool assessed randomized controlled trials (RCTs), while the Risk of Bias of Non-Randomized Studies (ROBINS-I) assessed single-arm trials. Fifty-five peer-reviewed articles based on 48 (27 RCTs; 21 single-arm) trials were included, of which 12 trials were meta-analyzed (N participants = 1048; of which ~3% ADHD, ~3% Epilepsy, ~94% Migraine; age range: 10-49 years). The meta-analyses showed that migraine pain intensity (K trials = 4, N = 485; SMD = 1.03, 95% CI[0.84-1.23]) and quality of life (K = 2, N = 304; SMD = 1.88, 95% CI[1.22-2.53]) significantly improved with eTNS combined with anti-migraine medication. Dimensional measures of depression improved with eTNS across 3 different disorders (K = 3, N = 111; SMD = 0.45, 95% CI[0.01-0.88]). eTNS was well-tolerated, with a good adverse event profile across disorders. eTNS is potentially clinically relevant in other disorders, but well-blinded, adequately powered RCTs must replicate findings and support optimal dosage guidance.
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Affiliation(s)
- Samuel J Westwood
- Department of Psychology, Institute of Psychiatry, Psychology, & Neuroscience, King's College London, London, UK.
- Department of Psychology, School of Social Science, University of Westminster, London, UK.
| | - Aldo Alberto Conti
- Department of Child and Adolescent Psychiatry; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Wanjie Tang
- Department of Child and Adolescent Psychiatry; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Department of Sociology and Psychology, School of Public Administration, Sichuan University, Chengdu, China
- Department of Psychiatry, West China Hospital, Sichuan University, Chengdu, China
| | - Shuang Xue
- Department of Sociology and Psychology, School of Public Administration, Sichuan University, Chengdu, China
| | - Samuele Cortese
- Centre for Innovation in Mental Health, School of Psychology, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK
- Clinical and Experimental Sciences (CNS and Psychiatry), Faculty of Medicine, University of Southampton, Southampton, UK
- Solent NHS Trust, Southampton, UK
- Hassenfeld Children's Hospital at NYU Langone, New York University Child Study Center, New York City, NY, USA
- Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham, UK
| | - Katya Rubia
- Department of Child and Adolescent Psychiatry; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- Department of Child & Adolescent Psychiatry, Technical University Dresden, Dresden, Germany
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Majdi A, Asamoah B, Mc Laughlin M. Understanding Neuromodulation Pathways in tDCS: Brain Stem Recordings in Rat During Trigeminal Nerve Direct Current Stimulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.14.557723. [PMID: 37745349 PMCID: PMC10515934 DOI: 10.1101/2023.09.14.557723] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Background Recent evidence suggests that transcranial direct current stimulation (tDCS) indirectly influences brain activity through cranial nerve pathways, particularly the trigeminal nerve. However, the electrophysiological effects of direct current (DC) stimulation on the trigeminal nerve (DC-TNS) and its impact on trigeminal nuclei remain unknown. These nuclei exert control over brainstem centers regulating neurotransmitter release, such as serotonin and norepinephrine, potentially affecting global brain activity. Objectives To investigate how DC-TNS impacts neuronal activity in the principal sensory nucleus (NVsnpr) and the mesencephalic nucleus of the trigeminal nerve (MeV). Methods Twenty male Sprague Dawley rats (n=10 each nucleus) were anesthetized with urethane. DC stimulation, ranging from 0.5 to 3 mA, targeted the trigeminal nerve's marginal branch. Simultaneously, single-unit electrophysiological recordings were obtained using a 32-channel silicon probe, comprising three one-minute intervals: pre-stimulation, DC stimulation, and post-stimulation. Xylocaine was administered to block the trigeminal nerve as a control. Results DC-TNS significantly increased neuronal spiking activity in both NVsnpr and MeV, returning to baseline during the post-stimulation phase. When the trigeminal nerve was blocked with xylocaine, the robust 3 mA trigeminal nerve DC stimulation failed to induce increased spiking activity in the trigeminal nuclei. Conclusion Our results offer initial empirical support for trigeminal nuclei activity modulation via DC-TNS. This discovery supports the hypothesis that cranial nerve pathways may play a pivotal role in mediating tDCS effects, setting the stage for further exploration into the complex interplay between peripheral nerves and neural modulation techniques. Highlights Direct current stimulation of the trigeminal nerve (DC-TNS) modulates neural activity in rat NVsnpr and MeV.Xylocaine administration reversibly blocks the DC-TNS effect on neural responses.Trigeminal nerve stimulation should be considered a possible mechanism of action of tDCS.
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Mercante B, Enrico P, Deriu F. Cognitive Functions following Trigeminal Neuromodulation. Biomedicines 2023; 11:2392. [PMID: 37760833 PMCID: PMC10525298 DOI: 10.3390/biomedicines11092392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/13/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Vast scientific effort in recent years have been focused on the search for effective and safe treatments for cognitive decline. In this regard, non-invasive neuromodulation has gained increasing attention for its reported effectiveness in promoting the recovery of multiple cognitive domains after central nervous system damage. In this short review, we discuss the available evidence supporting a possible cognitive effect of trigeminal nerve stimulation (TNS). In particular, we ask that, while TNS has been widely and successfully used in the treatment of various neuropsychiatric conditions, as far as research in the cognitive field is concerned, where does TNS stand? The trigeminal nerve is the largest cranial nerve, conveying the sensory information from the face to the trigeminal sensory nuclei, and from there to the thalamus and up to the somatosensory cortex. On these bases, a bottom-up mechanism has been proposed, positing that TNS-induced modulation of the brainstem noradrenergic system may affect the function of the brain networks involved in cognition. Nevertheless, despite the promising theories, to date, the use of TNS for cognitive empowering and/or cognitive decline treatment has several challenges ahead of it, mainly due to little uniformity of the stimulation protocols. However, as the field continues to grow, standardization of practice will allow for data comparisons across studies, leading to optimized protocols targeting specific brain circuitries, which may, in turn, influence cognition in a designed manner.
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Affiliation(s)
- Beniamina Mercante
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (B.M.); (P.E.)
| | - Paolo Enrico
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (B.M.); (P.E.)
| | - Franca Deriu
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; (B.M.); (P.E.)
- AOU Sassari, Unit of Endocrinology, Nutritional and Metabolic Disorders, 07100 Sassari, Italy
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Mula M. Impact of psychiatric comorbidities on the treatment of epilepsies in adults. Expert Rev Neurother 2023; 23:895-904. [PMID: 37671683 DOI: 10.1080/14737175.2023.2250558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 08/17/2023] [Indexed: 09/07/2023]
Abstract
INTRODUCTION Epilepsy is often accompanied by psychiatric comorbidities and the management of epilepsy in these patients presents unique challenges due to the interplay between the underlying neurological condition and the psychiatric symptoms and the combined use of multiple medications. AREAS COVERED This paper aims to explore the complexities associated with managing epilepsy in the presence of psychiatric comorbidities, focusing on the impact of psychiatric disorders on epilepsy treatment strategies and the challenges posed by the simultaneous administration of multiple medications. EXPERT OPINION Patients with epilepsy and psychiatric comorbidities seem to present with a more severe form of epilepsy that is resistant to drug treatments and burdened by an increased morbidity and mortality. Whether prompt treatment of psychiatric disorders can influence the long-term prognosis of the epilepsy is still unclear as well as the role of specific treatment strategies, such as neuromodulation, in this group of patients. Clinical practice recommendations and guidelines will prompt the development of new models of integrated care to be implemented.
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Affiliation(s)
- Marco Mula
- Atkinson Morley Regional Neuroscience Centre, St George's University Hospital, London, UK of Great Britain and Northern Ireland
- Institute of Medical and Biomedical Education, St George's University of London, London, UK
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Short-term transcutaneous trigeminal nerve stimulation does not affect visual oddball task and paired-click paradigm ERP responses in healthy volunteers. Exp Brain Res 2023; 241:327-339. [PMID: 36515720 DOI: 10.1007/s00221-022-06525-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022]
Abstract
Recent research suggests that transcutaneous trigeminal nerve stimulation (TNS) may positively affect cognitive function. However, no clear-cut evidence is available yet, since the majority of it derives from clinical studies, and the few data on healthy subjects show inconsistent results. In this study, we report the effects of short-term TNS on event-related potentials (ERP) recorded during the administration of a simple visual oddball task and a paired-click paradigm, both considered useful for studying brain information processing functions. Thirty-two healthy subjects underwent EEG recording before and after 20 min of sham- or real-TNS, delivered bilaterally to the infraorbital nerve. The amplitude and latency of P200 and P300 waves in the simple visual oddball task and P50, N100 and P200 waves in the paired-click paradigm were measured before and after treatment. Our results show that short-term TNS did not alter any of the ERP parameters measured, suggesting that in healthy subjects, short-term TNS may not affect brain processes involved in cognitive functions such as pre-attentional processes, early allocation of attention and immediate memory. The perspective of having an effective, non-pharmacological, non-invasive, and safe treatment option for cognitive decline is particularly appealing; therefore, more research on the positive effects on cognition of TNS is definitely needed.
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Yang S, Qin Z, Yang X, Chan MY, Zhang S, Rong P, Hou X, Jin G, Xu F, Liu Y, Zhang ZJ. Transcutaneous Electrical Cranial-Auricular Acupoint Stimulation vs. Escitalopram for Patients With Mild-to-Moderate Depression (TECAS): Study Design for a Randomized Controlled, Non-inferiority Trial. Front Psychiatry 2022; 13:829932. [PMID: 35619617 PMCID: PMC9127209 DOI: 10.3389/fpsyt.2022.829932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background Previous studies in animals and humans indicated that transcutaneous vagus nerve stimulation (tVNS) and transcutaneous electrical acupoint stimulation (TEAS) on trigeminal nerve-innervated forehead acupoints can relief the symptoms of depression. However, due to the limited investigations on these two interventions, more research are needed to confirm their efficacy in depression. To improve the efficacy of the single treatment, we combined two treatments and created a novel non-invasive stimulation, transcutaneous electrical cranial-auricular acupoint stimulation (TECAS). To assess the efficacy and safety of TECAS, we compare it with a selective serotonin reuptake inhibitor (SSRI), escitalopram, for the treatment of depression. Methods/Design This is a multi-center, non-inferiority, randomized controlled trial that will involve 470 patients with mild to moderate depression. Patients will be randomly assigned to either the TECAS group or the escitalopram group in a 1:1 ratio. The TEAS group will receive two sessions of treatments per day for 8 consecutive weeks, and the escitalopram group will receive 8 weeks of oral escitalopram tablets prescribed by clinical psychiatrists as appropriate for their condition. The primary outcome is the clinical response as determined by Montgomery-Åsberg Depression Rating Scale (MADRS) scores at week 8, with -10% as the non-inferior margin. The secondary outcomes include the response rate determined by 17-item Hamilton Depression Rating Scale (HAMD-17), remission rate, changes from baseline in the scores on the MADRS, the HAMD-17, the Hamilton Anxiety Rating Scale (HAMA), the Pittsburgh Sleep Quality Index (PSQI), and the Short Form 36 Health Survey (SF-36). Discussion This will be the first randomized controlled trial to compare the efficacy of TECAS with escitalopram for depression. If effective, this novel intervention could have significant clinical and research implications for patients with depression. Clinical Trial Registration [ClinicalTrials.gov], identifier [NCT03909217].
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Affiliation(s)
- Sichang Yang
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Zongshi Qin
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Xinjing Yang
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Mei Yan Chan
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Shuiyan Zhang
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
| | - Peijing Rong
- Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences (CACMS), Beijing, China
| | - Xiaobing Hou
- Beijing First Hospital of Integrated Chinese and Western Medicine, Beijing, China
| | - Guixing Jin
- Department of Mood Disorders, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Fengquan Xu
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yong Liu
- Department of Radiology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Zhang-Jin Zhang
- Department of Chinese Medicine, The University of Hong Kong Shenzhen Hospital (HKU-SZH), Shenzhen, China
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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Regenold WT, Deng ZD, Lisanby SH. Noninvasive neuromodulation of the prefrontal cortex in mental health disorders. Neuropsychopharmacology 2022; 47:361-372. [PMID: 34272471 PMCID: PMC8617166 DOI: 10.1038/s41386-021-01094-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 02/06/2023]
Abstract
More than any other brain region, the prefrontal cortex (PFC) gives rise to the singularity of human experience. It is therefore frequently implicated in the most distinctly human of all disorders, those of mental health. Noninvasive neuromodulation, including electroconvulsive therapy (ECT), repetitive transcranial magnetic stimulation (rTMS), and transcranial direct current stimulation (tDCS) among others, can-unlike pharmacotherapy-directly target the PFC and its neural circuits. Direct targeting enables significantly greater on-target therapeutic effects compared with off-target adverse effects. In contrast to invasive neuromodulation approaches, such as deep-brain stimulation (DBS), noninvasive neuromodulation can reversibly modulate neural activity from outside the scalp. This combination of direct targeting and reversibility enables noninvasive neuromodulation to iteratively change activity in the PFC and its neural circuits to reveal causal mechanisms of both disease processes and healthy function. When coupled with neuronavigation and neurophysiological readouts, noninvasive neuromodulation holds promise for personalizing PFC neuromodulation to relieve symptoms of mental health disorders by optimizing the function of the PFC and its neural circuits. ClinicalTrials.gov Identifier: NCT03191058.
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Affiliation(s)
- William T. Regenold
- grid.416868.50000 0004 0464 0574Noninvasive Neuromodulation Unit, Experimental Therapeutics & Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD USA
| | - Zhi-De Deng
- grid.416868.50000 0004 0464 0574Noninvasive Neuromodulation Unit, Experimental Therapeutics & Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD USA
| | - Sarah H. Lisanby
- grid.416868.50000 0004 0464 0574Noninvasive Neuromodulation Unit, Experimental Therapeutics & Pathophysiology Branch, National Institute of Mental Health, Bethesda, MD USA
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Wu Y, Zhu F, Chen W, Zhang M. Effects of transcutaneous electrical nerve stimulation (TENS) in people with knee osteoarthritis: A systematic review and meta-analysis. Clin Rehabil 2021; 36:472-485. [PMID: 34971318 DOI: 10.1177/02692155211065636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To evaluate the effects of Transcutaneous Electric Nerve Stimulation (TENS) on pain, function, walking ability and stiffness in people with Knee osteoarthritis (KOA). DESIGN Systematic review and meta-analysis of randomized controlled trials. METHODS We searched MEDLINE, EMBASE, PubMed, Cochrane Central Register of Controlled Trials, Physiotherapy Evidence Database (PEDro), clinicaltrials.gov and Web of Science (last search November 2021) for randomized controlled trials. The Cochrane Risk of Bias Tool was used for the included studies, and Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) was used to interpret the certainty of results. Standardized Mean Differences (SMDs) and 95% confidence interval (CI) were calculated for meta-analysis. RESULTS Twenty-nine studies were found (1398 people, age range 54-85, 74% are female) and fourteen were included in this review. Intervention duration was divided as short term (immediately after intervention), medium term (<four weeks) and long term (≥ four weeks). Active TENS showed greater improvement in Visual Analogue Scale (VAS) than sham TENS.Combining TENS with other interventions produced superior outcomes compared with other interventions for VAS in all the terms. In the meanwhile, TENS combined with other interventions was superior to other interventions for the pain subgroup of Western Ontario and McMaster Universities Arthritis Index in the medium term and long term. TENS combined with other interventions was superior to other interventions for function in the medium term and long term. CONCLUSION TENS could significantly relieve pain, decrease dysfunction and improve walking ability in people with KOA, but it is not effective for stiffness.
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Affiliation(s)
- Yu Wu
- Graduate School, 38044Xuzhou Medical University, Xuzhou, Jiangsu, 221000, China.,The Affiliated Xuzhou Rehabilitation Hospital of Xuzhou Medical University, Xuzhou Rehabilitation Hospital, Xuzhou, China
| | - Feilong Zhu
- Graduate School, 38044Xuzhou Medical University, Xuzhou, Jiangsu, 221000, China.,The Affiliated Xuzhou Rehabilitation Hospital of Xuzhou Medical University, Xuzhou Rehabilitation Hospital, Xuzhou, China
| | - Wei Chen
- The Affiliated Xuzhou Rehabilitation Hospital of Xuzhou Medical University, Xuzhou Rehabilitation Hospital, Xuzhou, China
| | - Ming Zhang
- The Affiliated Xuzhou Rehabilitation Hospital of Xuzhou Medical University, Xuzhou Rehabilitation Hospital, Xuzhou, China
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Transdermal Electrical Neuromodulation for Anxiety and Sleep Problems in High-Functioning Autism Spectrum Disorder: Feasibility and Preliminary Findings. J Pers Med 2021; 11:jpm11121307. [PMID: 34945779 PMCID: PMC8704341 DOI: 10.3390/jpm11121307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 12/27/2022] Open
Abstract
Background: Autism spectrum disorder (ASD) is associated with anxiety and sleep problems. We investigated transdermal electrical neuromodulation (TEN) of the cervical nerves in the neck as a safe, effective, comfortable and non-pharmacological therapy for decreasing anxiety and enhancing sleep quality in ASD. Methods: In this blinded, sham-controlled study, seven adolescents and young adults with high-functioning ASD underwent five consecutive treatment days, one day of the sham followed by four days of subthreshold TEN for 20 min. Anxiety-provoking cognitive tasks were performed after the sham/TEN. Measures of autonomic nervous system activity, including saliva α-amylase and cortisol, electrodermal activity, and heart rate variability, were collected from six participants. Results: Self-rated and caretaker-rated measures of anxiety were significantly improved with TEN treatment as compared to the sham, with effect sizes ranging from medium to large depending on the rating scale. Sleep scores from caretaker questionnaires also improved, but not significantly. Performance on two of the three anxiety-provoking cognitive tasks and heart rate variability significantly improved with TEN stimulation as compared to the sham. Four of the seven (57%) participants were responders, defined as a ≥ 30% improvement in self-reported anxiety. Salivary α-amylase decreased with more TEN sessions and decreased from the beginning to the end of the session on TEN days for responders. TEN was well-tolerated without significant adverse events. Conclusions: This study provides preliminary evidence that TEN is well-tolerated in individuals with ASD and can improve anxiety.
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12
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Clinical effectiveness of non-TMS neurostimulation in depression: Clinical trials from 2010 to 2020. Prog Neuropsychopharmacol Biol Psychiatry 2021; 110:110287. [PMID: 33610609 DOI: 10.1016/j.pnpbp.2021.110287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Treatment for major depressive disorder (MDD) have evolved, although there is still a strong unmet need for more effective and tolerable options. The present study summarizes and discusses recent evidence regarding the non-transcranial magnetic stimulation (non-TMS) neurostimulation treatment for MDD. METHODS The authors reviewed non-TMS neurostimulation clinical trials for MDD between 2010 and 2020. Electroconvulsive therapy was not included in this review. A systematic review was performed in MEDLINE database through PubMed, the Cochrane Collaboration's Clinical Trials Register (CENTRAL), PsycINFO and Thomson Reuters's Web of Science. RESULTS Only 20 articles met the inclusion criteria. Randomized controlled trials demonstrated efficacy of transcranial direct current stimulation (tDCS) in five of seven trials. tDCS augmented with sertraline, fluoxetine, citalopram and escitalopram was superior to placebo and to tDCS only. A comparative trial demonstrated that the duration of tDCS sessions can modulate the effectiveness of this treatment. Open trials indicated that deep brain stimulation, epidural cortical stimulation, trigeminal nerve stimulation, magnetic seizure therapy and vagus nerve stimulation may be effective in treatment-resistant depression. CONCLUSION This review confirmed the efficacy of tDCS in MDD. Despite new evidence showing effectiveness for other non-TMS neurostimulation, their effectiveness is still unclear. Non-TMS neurostimulation RCTs with large samples and head-to-head studies comparing non-TMS neurostimulation and gold standard pharmacological treatments are still lacking.
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13
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Assessment of the Use of Multi-Channel Organic Electrodes to Record ENG on Small Nerves: Application to Phrenic Nerve Burst Detection. SENSORS 2021; 21:s21165594. [PMID: 34451031 PMCID: PMC8402313 DOI: 10.3390/s21165594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/21/2021] [Accepted: 08/07/2021] [Indexed: 12/26/2022]
Abstract
Effective closed-loop neuromodulation relies on the acquisition of appropriate physiological control variables and the delivery of an appropriate stimulation signal. In particular, electroneurogram (ENG) data acquired from a set of electrodes applied at the surface of the nerve may be used as a potential control variable in this field. Improved electrode technologies and data processing methods are clearly needed in this context. In this work, we evaluated a new electrode technology based on multichannel organic electrodes (OE) and applied a signal processing chain in order to detect respiratory-related bursts from the phrenic nerve. Phrenic ENG (pENG) were acquired from nine Long Evans rats in situ preparations. For each preparation, a 16-channel OE was applied around the phrenic nerve’s surface and a suction electrode was applied to the cut end of the same nerve. The former electrode provided input multivariate pENG signals while the latter electrode provided the gold standard for data analysis. Correlations between OE signals and that from the gold standard were estimated. Signal to noise ratio (SNR) and ROC curves were built to quantify phrenic bursts detection performance. Correlation score showed the ability of the OE to record high-quality pENG. Our methods allowed good phrenic bursts detection. However, we failed to demonstrate a spatial selectivity from the multiple pENG recorded with our OE matrix. Altogether, our results suggest that highly flexible and biocompatible multi-channel electrode may represent an interesting alternative to metallic cuff electrodes to perform nerve bursts detection and/or closed-loop neuromodulation.
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14
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Spille JL, Grunwald M, Martin S, Mueller SM. Stop touching your face! A systematic review of triggers, characteristics, regulatory functions and neuro-physiology of facial self touch. Neurosci Biobehav Rev 2021; 128:102-116. [PMID: 34126163 DOI: 10.1016/j.neubiorev.2021.05.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/26/2021] [Accepted: 05/24/2021] [Indexed: 11/25/2022]
Abstract
Spontaneous face touching (sFST) is an ubiquitous behavior that occurs in people of all ages and all sexes, up to 800 times a day. Despite their high frequency, they have rarely been considered as an independent phenomenon. Recently, sFST have sparked scientific interest since they contribute to self-infection with pathogens. This raises questions about trigger mechanisms and functions of sFST and whether they can be prevented. This systematic comprehensive review compiles relevant evidence on these issues. Facial self-touches seem to increase in frequency and duration in socially, emotionally as well as cognitively challenging situations. They have been associated with attention focus, working memory processes and emotion regulating functions as well as the development and maintenance of a sense of self and body. The dominance of face touch over other body parts is discussed in light of the proximity of hand-face cortical representations and the peculiarities of facial innervations. The results show that underlying psychological and neuro-physiological mechanisms of sFST are still poorly understood and that various basic questions remain unanswered.
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Affiliation(s)
- Jente L Spille
- University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab, 04103 Leipzig, Germany
| | - Martin Grunwald
- University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab, 04103 Leipzig, Germany
| | - Sven Martin
- University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab, 04103 Leipzig, Germany
| | - Stephanie M Mueller
- University of Leipzig, Paul-Flechsig-Institute for Brain Research, Haptic Research Lab, 04103 Leipzig, Germany.
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15
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Struckmann W, Persson J, Weigl W, Gingnell M, Bodén R. Modulation of the prefrontal blood oxygenation response to intermittent theta-burst stimulation in depression: A sham-controlled study with functional near-infrared spectroscopy. World J Biol Psychiatry 2021; 22:247-256. [PMID: 32640854 DOI: 10.1080/15622975.2020.1785007] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To better understand the neural mechanisms behind the effect of intermittent theta-burst stimulation (iTBS), we investigated how the prefrontal blood oxygenation response measured by changes in oxygenated haemoglobin (oxy-Hb) was modulated during a sham-controlled iTBS treatment course, and whether this was related to depressive symptom change. METHODS In this randomised, double-blind study, patients with ongoing treatment-resistant depression received either active (n = 18) or sham (n = 21) iTBS over the dorsomedial prefrontal cortex for ten to fifteen days with two sessions daily. Event-related functional near-infrared spectroscopy (fNIRS) was measured during each iTBS train, and resting-state oxy-Hb was compared before and after each iTBS session at the first, fifth, and last treatment day. RESULTS Patients receiving active iTBS had an increase of the event-related oxy-Hb response compared to the sham group on the fifth (bilateral prefrontal cortices p < .001) and last (left prefrontal p = .007, right prefrontal p = .025) treatment day. Resting-state analysis showed suppressed oxy-Hb change in active iTBS compared to sham iTBS on the last treatment day (p = .024). Oxy-Hb change was unrelated to depressive symptom change (p = .474). CONCLUSIONS This study describes a modulation of the blood oxygenation response over the prefrontal cortex that was built up during the course of active iTBS treatment in depression.
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Affiliation(s)
- Wiebke Struckmann
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Jonas Persson
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Wojciech Weigl
- Department of Surgical Science, Anaesthesiology and Intensive Care, Uppsala University, Uppsala, Sweden
| | - Malin Gingnell
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden.,Department of Psychology, Uppsala University, Uppsala, Sweden
| | - Robert Bodén
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
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16
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Kanagasingam S, Chukkapalli SS, Welbury R, Singhrao SK. Porphyromonas gingivalis is a Strong Risk Factor for Alzheimer's Disease. J Alzheimers Dis Rep 2020; 4:501-511. [PMID: 33532698 PMCID: PMC7835991 DOI: 10.3233/adr-200250] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is one of the several important bacterial pathogens associated with the sporadic Alzheimer’s disease (AD). Different serotypes are either capsulated or are non-capsulated. It has been demonstrated that P. gingivalis (non-capsulated) can reproduce the neurodegenerative AD-like changes in vitro, and a capsular P. gingivalis (strain W83) could reproduce the cardinal hallmark lesions of AD in a wild-type mouse model. All P. gingivalis forms express proteolytically active proteases that enable cleavage of the amyloid-β protin precursor (AβPP) and tau resulting in the formation of amyloid-β and neurofibrillary tangles. Tau is an established substrate for gingipains, which can cleave tau into various peptides. Some of the P. gingivalis fragmented tau protein peptides contain “VQIINK” and “VQIVYK” hexapeptide motifs which map to the flanking regions of the microtubule binding domains and are also found in paired helical filaments that form NFTs. P. gingivalis can induce peripheral inflammation in periodontitis and can also initiate signaling pathways that activate kinases, which in turn, phosphorylate neuronal tau. Periodontal disease related inflammation has metabolic implications for an individual’s peripheral and brain health as patients suffering from generalized periodontitis often have related co-morbidities and are “at risk” of developing AD. The aim here is to discuss the role of P. gingivalis behind such associations with the backdrop of huge efforts to test P. gingivalis virulence factors clinically (GAIN Trial: Phase 2/3 Study of COR388 in Subjects with AD) with inhibitors, which may lead to an intervention by reducing the pathogenic bacterial load.
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Affiliation(s)
- Shalini Kanagasingam
- Brain and Behavior Centre, Faculty of Clinical and Biomedical Sciences, School of Dentistry, University of Central Lancashire, Preston, UK
| | - Sasanka S Chukkapalli
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Richard Welbury
- Brain and Behavior Centre, Faculty of Clinical and Biomedical Sciences, School of Dentistry, University of Central Lancashire, Preston, UK
| | - Sim K Singhrao
- Brain and Behavior Centre, Faculty of Clinical and Biomedical Sciences, School of Dentistry, University of Central Lancashire, Preston, UK
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17
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Levitsky A, Klein J, Artemiadis PK, Buneo CA. Effects of Transcutaneous Electric Nerve Stimulation on Upper Extremity Proprioceptive Function. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2020:3577-3580. [PMID: 33018776 DOI: 10.1109/embc44109.2020.9176210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Electrical stimulation of the vagus nerve has been shown to enhance cortical plasticity and may benefit upper extremity rehabilitation following stroke. As an initial step towards assessing the potential of other craniocervical nerves as neuromodulation targets during rehabilitation, we explored the ability of non-invasive stimulation of cervical spine afferents, paired with a proprioceptive discrimination task, to improve sensory function in neurologically intact human subjects. On each trial, subjects' arms were moved by a robot from a test position, along a random path, to a judgment position located 1-4 cm away. Subjects responded 'same' if the judgment position was the same as the test or 'different' if it was not. These responses were used to compute proprioceptive sensitivity and bias. Three groups of 20 subjects received transcutaneous electric nerve stimulation to the C3/C4 cervical spine at one of three frequencies (30 Hz, 300 Hz, 3 kHz) for 10 minutes prior to task performance. A fourth group served as a sham. We found a statistically significant interaction between stimulation frequency and displacement distance on proprioceptive sensitivity. In summary, stimulation of cervical spine afferents may enhance arm proprioceptive function, though in unimpaired subjects these gains depend on both stimulation frequency and discrimination distance.Clinical Relevance- This study provides preliminary data on the potential for non-invasive stimulation of cervical spine afferents to enhance recovery of function following stroke and other neurological disorders.
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18
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Konstantinou GN, Vigod SN, Mehta S, Daskalakis ZJ, Blumberger DM. "A systematic review of non-invasive neurostimulation for the treatment of depression during pregnancy". J Affect Disord 2020; 272:259-268. [PMID: 32553366 DOI: 10.1016/j.jad.2020.03.151] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/20/2020] [Accepted: 03/29/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Antidepressant use in pregnancy is associated with high levels of decision-making difficulty for patients, and psychotherapy may not be effective for severe symptoms. Alternative treatment options are needed. We conducted a systematic review of the clinical effects and tolerability of non-invasive neurostimulation: repetitive transcranial magnetic stimulation (rTMS), transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS), trigeminal nerve stimulation (TNS), and transcutaneous vagus nerve stimulation (tVNS) for the treatment of antenatal depression. METHODS We searched PubMed, Google Scholar and Scopus for published articles in English (1990 to June 2019). Two reviewers reviewed full-text articles, assessed quality, and extracted data on maternal psychiatric, pregnancy and neonatal outcomes. RESULTS Of 565 articles, 21 met inclusion criteria: two RCTs (1 rTMS; 1 tDCS), four open-label studies (3 rTMS; 1 tDCS), three case series (3 rTMS), and twelve case reports (9 rTMS; 1 tDCS; 1 tACS; 1 TNS). In all but one published study (1 rTMS), non-invasive neurostimulation resulted in either response or remission of antenatal depression. Minor maternal side effects were reported in rTMS and tDCS studies, but not in other modalities. Fetal adverse effects were not reported in any intervention. A small proportion of participants dropped out of treatment (rTMS, tDCS). LIMITATIONS Very few randomized trials have been conducted and there is significant heterogeneity in the parameters of the modalities that have been studied. CONCLUSIONS Non-invasive neurostimulation holds promise as a potentially effective and feasible alternative treatment for antenatal depression. Strategies to enhance recruitment of pregnant women into non-invasive neurostimulation trials that have longitudinal follow-up are needed.
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Affiliation(s)
- Gerasimos N Konstantinou
- Department of Psychiatry, University of Toronto; Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Simone N Vigod
- Department of Psychiatry, University of Toronto; Women's College Research Institute, Women's College Hospital, Toronto, ON, Canada
| | - Shobha Mehta
- Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Zafiris J Daskalakis
- Department of Psychiatry, University of Toronto; Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Daniel M Blumberger
- Department of Psychiatry, University of Toronto; Temerty Centre for Therapeutic Brain Intervention and Campbell Family Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
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19
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Gil-López F, Boget T, Manzanares I, Donaire A, Conde-Blanco E, Baillés E, Pintor L, Setoaín X, Bargalló N, Navarro J, Casanova J, Valls J, Roldán P, Rumià J, Casanovas G, Domenech G, Torres F, Carreño M. External trigeminal nerve stimulation for drug resistant epilepsy: A randomized controlled trial. Brain Stimul 2020; 13:1245-1253. [PMID: 32534250 DOI: 10.1016/j.brs.2020.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 02/10/2020] [Accepted: 06/04/2020] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND External trigeminal nerve stimulation (ETNS) is an emergent, non-invasive neurostimulation therapy delivered bilaterally with adhesive skin electrodes. In previous studies, ETNS was associated to a decrease in seizure frequency in patients with focal drug-resistant epilepsy (DRE). OBJECTIVE To determine the long-term efficacy and tolerability of ETNS in patients with focal DRE. Moreover, to explore whether its efficacy depends on the epileptogenic zone (frontal or temporal), and its impact on mood, cognitive function, quality of life, and trigeminal nerve excitability. METHODS Forty consecutive patients with frontal or temporal DRE, unsuitable for surgery, were randomized to ETNS or usual medical treatment. Participants were evaluated at 3, 6 and 12 months for efficacy, side effects, mood scales, neuropsychological tests and trigeminal nerve excitability. RESULTS Subjects had a median of 15 seizures per month and had tried a median of 12.5 antiepileptic drugs. At 12 months, percentage of responders was 50% in ETNS group and 0% in control group. Seizure frequency in ETNS group decreased by -43.5% from baseline. Temporal epilepsy subgroup responded better than frontal epilepsy subgroup (55.56% vs. 45.45%, respectively). Median stimulation intensity was 6.2 mA. ETNS improved quality of life, but not anxiety or depression. Long-term ETNS affected neither neuropsychological function, nor trigeminal nerve excitability. No relevant adverse events were observed. CONCLUSIONS ETNS is an effective and well-tolerated therapy for focal DRE. Patients with temporal epilepsy showed a better response than those with frontal epilepsy. Future studies with larger populations may define its role compared to other neurostimulation techniques. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that ETNS reduces seizure frequency in patients with focal DRE.
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Affiliation(s)
- Francisco Gil-López
- Epilepsy Unit, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain, Institut D'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain.
| | - Teresa Boget
- Epilepsy Unit, Department of Neuropsychology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Isabel Manzanares
- Epilepsy Unit, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain, Institut D'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Antonio Donaire
- Epilepsy Unit, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain, Institut D'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Estefanía Conde-Blanco
- Epilepsy Unit, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain, Institut D'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Eva Baillés
- Epilepsy Unit, Department of Psychiatry, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Luis Pintor
- Epilepsy Unit, Department of Psychiatry, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Xavier Setoaín
- Epilepsy Unit, Department of Nuclear Medicine, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Núria Bargalló
- Epilepsy Unit, Department of Neurorradiology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Judith Navarro
- Electromyography Unit, Neurophysiology, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Jordi Casanova
- Electromyography Unit, Neurophysiology, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Josep Valls
- Electromyography Unit, Neurophysiology, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Pedro Roldán
- Epilepsy Unit, Department of Neurosurgery, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Jordi Rumià
- Epilepsy Unit, Department of Neurosurgery, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Georgina Casanovas
- Medical Statistics Core Facility, IDIBAPS-Hospital Clínic, Barcelona, Spain
| | - Gema Domenech
- Medical Statistics Core Facility, IDIBAPS-Hospital Clínic, Barcelona, Spain
| | - Ferrán Torres
- Medical Statistics Core Facility, IDIBAPS-Hospital Clínic, Barcelona, Spain
| | - Mar Carreño
- Epilepsy Unit, Department of Neurology, Hospital Clínic de Barcelona, Barcelona, Spain, Institut D'Investigacions Biomediques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
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Vlaicu A, Bustuchina Vlaicu M. New neuromodulation techniques for treatment resistant depression. Int J Psychiatry Clin Pract 2020; 24:106-115. [PMID: 32069166 DOI: 10.1080/13651501.2020.1728340] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In the treatment of depression, when pharmacotherapy, psychotherapy and the oldest brain stimulation techniques are deadlocked, the emergence of new therapies is a necessary development. The field of neuromodulation is very broad and controversial. This article provides an overview of current progress in the technological advances in neuromodulation and neurostimulation treatments for treatment-resistant depression: magnetic seizure therapy; focal electrically administered seizure therapy; low field magnetic stimulation; transcranial pulsed electromagnetic fields; transcranial direct current stimulation; epidural cortical stimulation; trigeminal nerve stimulation; transcutaneous vagus nerve stimulation; transcranial focussed ultrasound; near infra-red transcranial radiation; closed loop stimulation. The role of new interventions is expanding, probably with more efficacy. Nowadays, still under experimentation, neuromodulation will probably revolutionise the field of neuroscience. At present, major efforts are still necessary before that these therapies are likely to become widespread.Key pointsThere is a critical need for new therapies for treatment resistant depression.Newer therapies are expanding. In the future, these therapies, as an evidence-based adjunctive treatments, could offer a good therapeutic choice for the patients with a TRD.The current trend in the new neuromodulation therapies is to apply a personalised treatment.These news therapies can be complementary.That treatment approaches can provide clinically significant benefits.
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Affiliation(s)
- Andrei Vlaicu
- Psychiatry Department, CHHM, Hospital Andre Breton, Saint-Dizier, France
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21
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Adair D, Truong D, Esmaeilpour Z, Gebodh N, Borges H, Ho L, Bremner JD, Badran BW, Napadow V, Clark VP, Bikson M. Electrical stimulation of cranial nerves in cognition and disease. Brain Stimul 2020; 13:717-750. [PMID: 32289703 PMCID: PMC7196013 DOI: 10.1016/j.brs.2020.02.019] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 02/06/2023] Open
Abstract
The cranial nerves are the pathways through which environmental information (sensation) is directly communicated to the brain, leading to perception, and giving rise to higher cognition. Because cranial nerves determine and modulate brain function, invasive and non-invasive cranial nerve electrical stimulation methods have applications in the clinical, behavioral, and cognitive domains. Among other neuromodulation approaches such as peripheral, transcranial and deep brain stimulation, cranial nerve stimulation is unique in allowing axon pathway-specific engagement of brain circuits, including thalamo-cortical networks. In this review we amalgamate relevant knowledge of 1) cranial nerve anatomy and biophysics; 2) evidence of the modulatory effects of cranial nerves on cognition; 3) clinical and behavioral outcomes of cranial nerve stimulation; and 4) biomarkers of nerve target engagement including physiology, electroencephalography, neuroimaging, and behavioral metrics. Existing non-invasive stimulation methods cannot feasibly activate the axons of only individual cranial nerves. Even with invasive stimulation methods, selective targeting of one nerve fiber type requires nuance since each nerve is composed of functionally distinct axon-types that differentially branch and can anastomose onto other nerves. None-the-less, precisely controlling stimulation parameters can aid in affecting distinct sets of axons, thus supporting specific actions on cognition and behavior. To this end, a rubric for reproducible dose-response stimulation parameters is defined here. Given that afferent cranial nerve axons project directly to the brain, targeting structures (e.g. thalamus, cortex) that are critical nodes in higher order brain networks, potent effects on cognition are plausible. We propose an intervention design framework based on driving cranial nerve pathways in targeted brain circuits, which are in turn linked to specific higher cognitive processes. State-of-the-art current flow models that are used to explain and design cranial-nerve-activating stimulation technology require multi-scale detail that includes: gross anatomy; skull foramina and superficial tissue layers; and precise nerve morphology. Detailed simulations also predict that some non-invasive electrical or magnetic stimulation approaches that do not intend to modulate cranial nerves per se, such as transcranial direct current stimulation (tDCS) and transcranial magnetic stimulation (TMS), may also modulate activity of specific cranial nerves. Much prior cranial nerve stimulation work was conceptually limited to the production of sensory perception, with individual titration of intensity based on the level of perception and tolerability. However, disregarding sensory emulation allows consideration of temporal stimulation patterns (axon recruitment) that modulate the tone of cortical networks independent of sensory cortices, without necessarily titrating perception. For example, leveraging the role of the thalamus as a gatekeeper for information to the cerebral cortex, preventing or enhancing the passage of specific information depending on the behavioral state. We show that properly parameterized computational models at multiple scales are needed to rationally optimize neuromodulation that target sets of cranial nerves, determining which and how specific brain circuitries are modulated, which can in turn influence cognition in a designed manner.
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Affiliation(s)
- Devin Adair
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Dennis Truong
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Zeinab Esmaeilpour
- Department of Biomedical Engineering, City College of New York, New York, NY, USA.
| | - Nigel Gebodh
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Helen Borges
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Libby Ho
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - J Douglas Bremner
- Department of Psychiatry & Behavioral Sciences and Radiology, Emory University School of Medicine, Atlanta, GA, USA; Atlanta VA Medical Center, Decatur, GA, USA
| | - Bashar W Badran
- Department of Psychiatry & Behavioral Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Vitaly Napadow
- Martinos Center for Biomedical Imaging, Department of Radiology, MGH, Harvard medical school, Boston, MA, USA
| | - Vincent P Clark
- Psychology Clinical Neuroscience Center, Dept. Psychology, MSC03-2220, University of New Mexico, Albuquerque, NM, 87131, USA; Department of Psychology, University of New Mexico, Albuquerque, NM, 87131, USA; The Mind Research Network of the Lovelace Biomedical Research Institute, 1101 Yale Blvd. NE, Albuquerque, NM, 87106, USA
| | - Marom Bikson
- Department of Biomedical Engineering, City College of New York, New York, NY, USA.
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Blacker KJ, Peltier C, McKinley RA, Biggs AT. What Versus How in Visual Search: Effects of Object Recognition Training, Strategy Training, and Non-invasive Brain Stimulation on Satellite Image Search. JOURNAL OF COGNITIVE ENHANCEMENT 2020. [DOI: 10.1007/s41465-020-00165-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Rohatgi P, Chivukula S, Kashanian A, Bari AA. Peripheral Nerve Stimulation. Stereotact Funct Neurosurg 2020. [DOI: 10.1007/978-3-030-34906-6_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bong J, Ness JP, Zeng W, Kim H, Novello J, Pisaniello J, Lake WB, Ludwig KA, Williams JC, Ma Z, Suminski AJ. Flexible, multichannel cuff electrode for selective electrical stimulation of the mouse trigeminal nerve. Biosens Bioelectron 2019; 142:111493. [DOI: 10.1016/j.bios.2019.111493] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 01/24/2023]
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Abstract
Depression is one of the most disabling conditions in the world. In many cases patients continue to suffer with depressive disorders despite a series of adequate trials of medication and psychotherapy. Neuromodulation treatments offer a qualitatively different modality of treatment that can frequently prove efficacious in these treatment-refractory patients. The field of neuromodulation focuses on the use of electrical/electromagnetic energy, both invasively and noninvasively, to interface with and ultimately alter activity within the human brain for therapeutic purposes. These treatments provide another set of options to offer patients when clinically indicated, and knowledge of their safety, risks and benefits, and appropriate clinical application is essential for modern psychiatrists and other mental health professionals. Although neuromodulation techniques hold tremendous promise, only three such treatments are currently approved by the United States Food and Drug Administration (FDA) for the treatment of major depressive disorder: electroconvulsive therapy (ECT), vagus nerve stimulation (VNS), and repetitive transcranial magnetic stimulation (rTMS). Additionally, numerous other neurostimulation modalities (deep brain stimulation [DBS], magnetic seizure therapy [MST], transcranial electric stimulation [tES], and trigeminal nerve stimulation [TNS]), though currently experimental, show considerable therapeutic promise. Researchers are actively looking for ways to optimize outcomes and clinical benefits by making neuromodulation treatments safer, more efficacious, and more durable.
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Affiliation(s)
| | - Willa Xiong
- Washington University School of Medicine, St. Louis, MO, USA
| | - Charles R Conway
- Washington University School of Medicine, St. Louis, MO, USA. .,John Cochran Division, VA St. Louis Health Care System, St. Louis, MO, USA.
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Dingle A, Zeng W, Ness JP, Albano N, Minor RL, Feldman C, Austin M, Brodnick SK, Shulzhenko N, Sanchez R, Lake WB, Williams JC, Poore SO, Suminski AJ. Strategies for interfacing with the trigeminal nerves in rodents for bioelectric medicine. J Neurosci Methods 2019; 324:108321. [PMID: 31229585 DOI: 10.1016/j.jneumeth.2019.108321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/05/2019] [Accepted: 06/19/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND Bioelectric medicine seeks to modulate neural activity via targeted electrical stimulation to treat disease. Recent clinical evidence supports trigeminal nerve stimulation as a bioelectric treatment for several neurological disorders; however, the mechanisms of trigeminal nerve stimulation and potential side effects remain largely unknown. The goal of this study is to optimize the methodology and reproducibility of neural interface implantation for mechanistic studies in rodents. NEW METHOD(S) This article describes a single incision surgical approach to the infraorbital nerve of rats and mice and the supraorbital nerve in rats for trigeminal nerve stimulation studies. This article also presents the use of cortical evoked potentials and electromyography as methods for demonstrating effective engagement between the implanted electrode and target nerve. COMPARISON WITH EXISTING METHOD(S) A number of surgical approaches to the infraorbital nerve in rats exist, many of which are technically difficult. A simple, standardized approach to infraorbital nerve in rats and mice, as well as the supraorbital nerve of rats is integral to reproducibility of future trigeminal nerve stimulation studies. CONCLUSION The infraorbital nerve of rats and mice can be easily accessed from a single dorsal incision on the bridge of the nose that avoids major anatomical structures such as the facial nerve. The supraorbital nerve is also accessible in rats from a single dorsal incision, but not mice due to size. Successful interfacing and engagement of the infra- and supraorbital nerves using the described methodology is demonstrated by recording of evoked cortical potentials and electromyography.
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Affiliation(s)
- Aaron Dingle
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States.
| | - Weifeng Zeng
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States
| | - Jared P Ness
- Department of Biomedical Engineering, University of Wisconsin-Madison, United States
| | - Nicholas Albano
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States
| | - Rashea L Minor
- School of Veterinary Medicine, University of Wisconsin-Madison, United States
| | - Coner Feldman
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States
| | - Mark Austin
- Department of Biomedical Engineering, University of Wisconsin-Madison, United States
| | - Sarah K Brodnick
- Department of Biomedical Engineering, University of Wisconsin-Madison, United States
| | - Nikita Shulzhenko
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States
| | - Ruston Sanchez
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States
| | - Wendell B Lake
- Department of Neurological Surgery, University of Wisconsin-Madison, United States
| | - Justin C Williams
- Department of Biomedical Engineering, University of Wisconsin-Madison, United States; Department of Neurological Surgery, University of Wisconsin-Madison, United States
| | - Samuel O Poore
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin-Madison, United States; Department of Biomedical Engineering, University of Wisconsin-Madison, United States
| | - Aaron J Suminski
- Department of Biomedical Engineering, University of Wisconsin-Madison, United States; Department of Neurological Surgery, University of Wisconsin-Madison, United States.
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Effect of a 10-day transcutaneous trigeminal nerve stimulation (TNS) protocol for depression amelioration: A randomized, double blind, and sham-controlled phase II clinical trial. Epilepsy Behav 2019; 95:39-42. [PMID: 31026780 DOI: 10.1016/j.yebeh.2019.03.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 03/07/2019] [Accepted: 03/16/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Major depressive disorder (MDD) is one of the leading causes of disability in the world. However, treatment options are still limited, and marked by high refractoriness rates, new approaches are needed to optimize clinical improvement. Trigeminal nerve stimulation (TNS) is an innovative neuromodulation strategy consisting on the application of an electric current over the trigeminal nerve that propagates stimuli towards brain areas involved in mood control. OBJECTIVE We examined the effects of TNS in MDD after a 10-day experimental protocol. METHODS This was a randomized, double blind, and sham-controlled phase II study with 24 patients with severe MDD. Patients underwent a 10-day intervention protocol and were assessed with the 17-item Hamilton Depression Rating Scale (HDRS-17) at following three observation points: baseline (T1), after 10 days (T2), and after one month of the last stimulation session (T3). Main clinical outcome analysis of variance (ANOVA) was performed. RESULTS Patients in the active group presented a mean reduction of 36.15% in depressive symptoms after the stimulation protocol. There was a significant interaction between group and time regarding HDRS-17 scores (F = 3.18; df = 2; p = 0.0456). Post hoc analyses exhibited a statistically significant difference between active and sham group symptoms at T2 (p = 0.040) and T3 (p = 0.026), which highlights the sustained amelioration of depressive symptoms. CONCLUSION The present study found amelioration of depressive symptoms for patients undergoing a 10-day stimulation protocol of TNS, and this was sustained after one month of follow-up.
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Ginatempo F, De Carli F, Todesco S, Mercante B, Sechi GP, Deriu F. Effects of acute trigeminal nerve stimulation on rest EEG activity in healthy adults. Exp Brain Res 2018; 236:2839-2845. [PMID: 30039458 DOI: 10.1007/s00221-018-5338-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 07/18/2018] [Indexed: 10/28/2022]
Abstract
Trigeminal nerve stimulation (TNS) is a non-invasive neuromodulation method which is increasingly used for its beneficial effects on symptoms of several neuropsychiatric disorders such as drug-resistant epilepsy. Sites and mechanisms of its action are still unknown. The present study was aimed at investigating the physiological effects of acute TNS on rest electroencephalographic (EEG) activity. EEG was recorded with a 19-channel EEG system from 18 healthy adults who underwent 20 min of sham- and real-TNS (cycles of 30 s ON and 30 s OFF) in two separate sessions. EEG was continuously acquired in the 10-min preceding TNS, during TNS in the "OFF" period and throughout 10 min after TNS. Mean frequency, total power over the 0.5-48 Hz frequency range and absolute power for delta, theta, alpha, beta and gamma bands were analyzed by a discrete Fast Fourier Transform algorithm. Interhemispheric and intrahemispheric coherences were also analyzed for each band at different time points. Intra- and interhemispheric coherences were significantly reduced for the beta frequencies only during real-TNS (p = 0.002 and p = 0.006, respectively). No TNS effect on the power spectra of any band was detected. A trend of increase in the mean EEG frequency total power during real-TNS (p = 0.03) and of decrease in interhemispheric gamma coherence after real-TNS (p = 0.01) was observed. Acute TNS may induce a spatially diffuse desynchronization of fast EEG rhythms in healthy adults, this desynchronization may underpin the antiepileptic effect of TNS described by clinical studies.
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Affiliation(s)
- Francesca Ginatempo
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy
| | - Fabrizio De Carli
- Genoa Section, Institute of Bioimaging and Molecular Physiology, National Research Council, Genoa, Italy
| | - Sara Todesco
- Neurology Unit, «A. Segni» Hospital, ASL n. 1, Sassari, Italy
| | - Beniamina Mercante
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy
| | - Gian Pietro Sechi
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - Franca Deriu
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy.
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De Cicco V, Tramonti Fantozzi MP, Cataldo E, Barresi M, Bruschini L, Faraguna U, Manzoni D. Trigeminal, Visceral and Vestibular Inputs May Improve Cognitive Functions by Acting through the Locus Coeruleus and the Ascending Reticular Activating System: A New Hypothesis. Front Neuroanat 2018; 11:130. [PMID: 29358907 PMCID: PMC5766640 DOI: 10.3389/fnana.2017.00130] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 12/15/2017] [Indexed: 12/25/2022] Open
Abstract
It is known that sensory signals sustain the background discharge of the ascending reticular activating system (ARAS) which includes the noradrenergic locus coeruleus (LC) neurons and controls the level of attention and alertness. Moreover, LC neurons influence brain metabolic activity, gene expression and brain inflammatory processes. As a consequence of the sensory control of ARAS/LC, stimulation of a sensory channel may potential influence neuronal activity and trophic state all over the brain, supporting cognitive functions and exerting a neuroprotective action. On the other hand, an imbalance of the same input on the two sides may lead to an asymmetric hemispheric excitability, leading to an impairment in cognitive functions. Among the inputs that may drive LC neurons and ARAS, those arising from the trigeminal region, from visceral organs and, possibly, from the vestibular system seem to be particularly relevant in regulating their activity. The trigeminal, visceral and vestibular control of ARAS/LC activity may explain why these input signals: (1) affect sensorimotor and cognitive functions which are not directly related to their specific informational content; and (2) are effective in relieving the symptoms of some brain pathologies, thus prompting peripheral activation of these input systems as a complementary approach for the treatment of cognitive impairments and neurodegenerative disorders.
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Affiliation(s)
- Vincenzo De Cicco
- Laboratory of Sensorimotor Integration, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Maria P Tramonti Fantozzi
- Laboratory of Sensorimotor Integration, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | | | - Massimo Barresi
- Institut des Maladie Neurodégénératives, University of Bordeaux, Bordeaux, France
| | - Luca Bruschini
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy
| | - Ugo Faraguna
- Laboratory of Sensorimotor Integration, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy.,Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Diego Manzoni
- Laboratory of Sensorimotor Integration, Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
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Mercante B, Enrico P, Floris G, Quartu M, Boi M, Serra MP, Follesa P, Deriu F. Trigeminal nerve stimulation induces Fos immunoreactivity in selected brain regions, increases hippocampal cell proliferation and reduces seizure severity in rats. Neuroscience 2017; 361:69-80. [DOI: 10.1016/j.neuroscience.2017.08.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/06/2017] [Accepted: 08/03/2017] [Indexed: 12/11/2022]
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Shiozawa P, Cordeiro Q, Cho HJ, Trevizol AP, Brietzke E. A critical review of trials of transcranial direct current stimulation and trigeminal nerve stimulation for depression: the issue of treatment-emergent mania. TRENDS IN PSYCHIATRY AND PSYCHOTHERAPY 2017; 39:48-53. [PMID: 28403323 DOI: 10.1590/2237-6089-2016-0027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/25/2016] [Indexed: 12/16/2022]
Abstract
Objective: This study is a critical review analyzing occurrence of treatment-emergent mania (TEM) related to transcranial direct current stimulation (tDCS) and trigeminal nerve stimulation (TNS). Method: We present a systematic review of the literature on TEM related to tDCS and TNS treatment for major depressive disorder (MDD), conducted in accordance with the recommendations from Cochrane Group and the PRISMA guidelines. Results: Our search identified few reported episodes of TEM in the literature. In fact, we found 11 trials focused on treatment of MDD (seven controlled trials of tDCS and four trials of TNS, three open label and one controlled). We highlight the need for safety assessment in clinical research settings to establish with precision and in larger samples the risks inherent to the technique under investigation. Conclusion: Safety assessment is of fundamental importance in clinical research. TEM is a very important safety issue in MDD trials. Further and larger controlled trials will help to clarify both the safety and the clinical effects of combinations of pharmacotherapy and tDCS or TNS in daily clinical practice.
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Affiliation(s)
- Pedro Shiozawa
- Centro Interdisciplinar de Neuromodulação Clínica, Faculdade de Ciências Médicas, Santa Casa de São Paulo, São Paulo, SP, Brazil
| | - Quirino Cordeiro
- Centro Interdisciplinar de Neuromodulação Clínica, Faculdade de Ciências Médicas, Santa Casa de São Paulo, São Paulo, SP, Brazil
| | | | - Alisson Paulino Trevizol
- Centro Interdisciplinar de Neuromodulação Clínica, Faculdade de Ciências Médicas, Santa Casa de São Paulo, São Paulo, SP, Brazil
| | - Elisa Brietzke
- Laboratório Interdisciplinar de Neurociências Clínicas (LiNC), Departamento de Psiquiatria, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
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Shiozawa P, Soares A, Taiar I, Dias ÁM, Cordeiro Q. Transcranial direct current stimulation (tDCS): Are we losing energy? Epilepsy Behav 2017; 66:138-139. [PMID: 27979410 DOI: 10.1016/j.yebeh.2016.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 10/13/2016] [Accepted: 10/13/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Pedro Shiozawa
- Evidence-based Psychiatry Unit, Santa Casa Medical School, São Paulo, Brazil; Center for neuromodulation studies of the Federal University of Sao Paulo Medical School, Brazil.
| | - Amanda Soares
- Evidence-based Psychiatry Unit, Santa Casa Medical School, São Paulo, Brazil; Center for neuromodulation studies of the Federal University of Sao Paulo Medical School, Brazil
| | - Ivan Taiar
- Evidence-based Psychiatry Unit, Santa Casa Medical School, São Paulo, Brazil; Center for neuromodulation studies of the Federal University of Sao Paulo Medical School, Brazil
| | - Álvaro Machado Dias
- Clinical Neuroscience Lab of the Dept. of Psychiatry, Federal University of São Paulo, Brazil; Center for neuromodulation studies of the Federal University of Sao Paulo Medical School, Brazil
| | - Quirino Cordeiro
- Evidence-based Psychiatry Unit, Santa Casa Medical School, São Paulo, Brazil; Center for neuromodulation studies of the Federal University of Sao Paulo Medical School, Brazil
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Trigeminal Nerve Stimulation for Major Depressive Disorder: An Updated Systematic Review. ARCHIVES OF NEUROSCIENCE 2016. [DOI: 10.5812/archneurosci.39263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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de Sousa RT, Zanetti MV, Brunoni AR, Machado-Vieira R. Challenging Treatment-Resistant Major Depressive Disorder: A Roadmap for Improved Therapeutics. Curr Neuropharmacol 2016; 13:616-35. [PMID: 26467411 PMCID: PMC4761633 DOI: 10.2174/1570159x13666150630173522] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/15/2014] [Accepted: 12/17/2014] [Indexed: 02/06/2023] Open
Abstract
Major
depressive disorder (MDD) is associated with a significant burden and costs to
the society. As remission of depressive symptoms is achieved in only one-third
of the MDD patients after the first antidepressant trial, unsuccessful
treatments contribute largely to the observed suffering and social costs of MDD.
The present article provides a summary of the therapeutic strategies that have
been tested for treatment-resistant depression (TRD). A computerized search on
MedLine/PubMed database from 1975 to September 2014 was performed, using the
keywords “treatment-resistant depression”, “major depressive disorder”,
“adjunctive”, “refractory” and “augmentation”. From the 581 articles retrieved,
two authors selected 79 papers. A manual searching further considered relevant
articles of the reference lists. The evidence found supports adding or switching
to another antidepressant from a different class is an effective strategy in
more severe MDD after failure to an initial antidepressant trial. Also, in
subjects resistant to two or more classes of antidepressants, some augmentation
strategies and antidepressant combinations should be considered, although the
overall response and remission rates are relatively low, except for fast acting
glutamatergic modulators. The wide range of available treatments for TRD
reflects the complexity of MDD, which does not underlie diverse key features of
the disorder. Larger and well-designed studies applying dimensional approaches
to measure efficacy and effectiveness are warranted.
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Affiliation(s)
| | | | | | - Rodrigo Machado-Vieira
- Laboratory of Neuroscience (LIM27), Department and Institute of Psychiatry, University of Sao Paulo, Brazil, Address: Instituto de Psiquiatria do HC-FMUSP, 3o andar, LIM-27, Rua Dr. Ovidio Pires de Campos, 785, Postal code 05403- 010, Sao Paulo, SP, Brazil
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Trevizol AP, Sato IA, Cook IA, Shiozawa P, Lowenthal R, Cordeiro Q. Trigeminal nerve stimulation (TNS) for posttraumatic stress disorder and major depressive disorder: An open-label proof-of-concept trial. Epilepsy Behav 2016; 60:240-241. [PMID: 27177991 DOI: 10.1016/j.yebeh.2016.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 04/04/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Alisson Paulino Trevizol
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil.
| | - Isa Albuquerque Sato
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
| | - Ian A Cook
- Neuromodulation Division, Departments of Psychiatry and Bioengineering, University of California, Los Angeles, USA
| | - Pedro Shiozawa
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
| | - Rosane Lowenthal
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
| | - Quirino Cordeiro
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
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Shiozawa P, Silveira JG, Soares A, Taiar I, Trevizol A, Dias ÁM, Cordeiro Q. Electroencephalographic changes following a trigeminal nerve stimulation (TNS) protocol: Assessing a novel depression treatment. Epilepsy Behav 2016; 58:141-2. [PMID: 26996119 DOI: 10.1016/j.yebeh.2016.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 02/21/2016] [Indexed: 11/17/2022]
Affiliation(s)
- Pedro Shiozawa
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil.
| | - July Gomes Silveira
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil; Clinical Neuroscience Lab (LinC), Dept. of Psychiatry, Federal University of São Paulo, Brazil
| | - Amanda Soares
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil
| | - Ivan Taiar
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil
| | - Alisson Trevizol
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil
| | - Álvaro Machado Dias
- Clinical Neuroscience Lab (LinC), Dept. of Psychiatry, Federal University of São Paulo, Brazil
| | - Quirino Cordeiro
- The Clinical Neuromodulation Lab, Santa Casa Medical School, São Paulo, Brazil
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Klooster DCW, de Louw AJA, Aldenkamp AP, Besseling RMH, Mestrom RMC, Carrette S, Zinger S, Bergmans JWM, Mess WH, Vonck K, Carrette E, Breuer LEM, Bernas A, Tijhuis AG, Boon P. Technical aspects of neurostimulation: Focus on equipment, electric field modeling, and stimulation protocols. Neurosci Biobehav Rev 2016; 65:113-41. [PMID: 27021215 DOI: 10.1016/j.neubiorev.2016.02.016] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 02/05/2016] [Accepted: 02/17/2016] [Indexed: 12/31/2022]
Abstract
Neuromodulation is a field of science, medicine, and bioengineering that encompasses implantable and non-implantable technologies for the purpose of improving quality of life and functioning of humans. Brain neuromodulation involves different neurostimulation techniques: transcranial magnetic stimulation (TMS), transcranial direct current stimulation (tDCS), vagus nerve stimulation (VNS), and deep brain stimulation (DBS), which are being used both to study their effects on cognitive brain functions and to treat neuropsychiatric disorders. The mechanisms of action of neurostimulation remain incompletely understood. Insight into the technical basis of neurostimulation might be a first step towards a more profound understanding of these mechanisms, which might lead to improved clinical outcome and therapeutic potential. This review provides an overview of the technical basis of neurostimulation focusing on the equipment, the present understanding of induced electric fields, and the stimulation protocols. The review is written from a technical perspective aimed at supporting the use of neurostimulation in clinical practice.
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Affiliation(s)
- D C W Klooster
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands; Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - A J A de Louw
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands; Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Department of Neurology, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - A P Aldenkamp
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands; Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Department of Neurology, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; School for Mental Health and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands; Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
| | - R M H Besseling
- Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - R M C Mestrom
- Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - S Carrette
- Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
| | - S Zinger
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands; Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - J W M Bergmans
- Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - W H Mess
- Departments of Clinical Neurophysiology, Maastricht University Medical Center, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands.
| | - K Vonck
- Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
| | - E Carrette
- Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
| | - L E M Breuer
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands.
| | - A Bernas
- Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - A G Tijhuis
- Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
| | - P Boon
- Kempenhaeghe Academic Center for Epileptology, P.O. Box 61, 5590 AB Heeze, The Netherlands; Department of Electrical Engineering, University of Technology Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Department of Neurology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
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Chronic Trigeminal Nerve Stimulation Protects Against Seizures, Cognitive Impairments, Hippocampal Apoptosis, and Inflammatory Responses in Epileptic Rats. J Mol Neurosci 2016; 59:78-89. [PMID: 26973056 DOI: 10.1007/s12031-016-0736-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/04/2016] [Indexed: 12/14/2022]
Abstract
Trigeminal nerve stimulation (TNS) has recently been demonstrated effective in the treatment of epilepsy and mood disorders. Here, we aim to determine the effects of TNS on epileptogenesis, cognitive function, and the associated hippocampal apoptosis and inflammatory responses. Rats were injected with pilocarpine to produce status epilepticus (SE) and the following chronic epilepsy. After SE induction, TNS treatment was conducted for 4 consecutive weeks. A pilocarpine re-injection was then used to induce a seizure in the epileptic rats. The hippocampal neuronal apoptosis induced by seizure was assessed by TUNEL staining and inflammatory responses by immunohistochemistry and enzyme-linked immunosorbent assay (ELISA). The spontaneous recurrent seizure (SRS) number was counted through video monitoring, and the cognitive function assessed through Morris Water Maze (MWM) test. TNS treatment attenuated the SRS attacks and improved the cognitive impairment in epileptic rats. A pilocarpine re-injection resulted in less hippocampal neuronal apoptosis and reduced level of interleukin-1 beta (IL-1β), tumor necrosis factor-α (TNF-α), and microglial activation in epileptic rats with TNS treatment in comparison to the epileptic rats without TNS treatment. It is concluded that TNS treatment shortly after SE not only protected against the chronic spontaneous seizures but also improved cognitive impairments. These antiepileptic properties of TNS may be related to its attenuating effects on hippocampal apoptosis and pro-inflammatory responses.
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De Cicco V, Barresi M, Tramonti Fantozzi MP, Cataldo E, Parisi V, Manzoni D. Oral Implant-Prostheses: New Teeth for a Brighter Brain. PLoS One 2016; 11:e0148715. [PMID: 26919258 PMCID: PMC4771091 DOI: 10.1371/journal.pone.0148715] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 12/15/2015] [Indexed: 12/22/2022] Open
Abstract
Several studies have demonstrated that chewing can be regarded as a preventive measure for cognitive impairment, whereas masticatory deficiency, associated with soft-diet feeding, is a risk factor for the development of dementia. At present the link between orofacial sensorimotor activity and cognitive functions is unknown. In subjects with unilateral molar loss we have shown asymmetries in both pupil size and masticatory muscles electromyographic (EMG) activity during clenching: the molar less side was characterized by a lower EMG activity and a smaller pupil. Since implant-prostheses, greatly reduced both the asymmetry in EMG activity and in pupil's size, trigeminal unbalance, leading to unbalance in the activity of the Locus Coeruleus (LC), may be responsible for the pupil's asymmetry. According to the findings obtained in animal models, we propose that the different activity of the right and left LC may induce an asymmetry in brain activity, thus leading to cognitive impairment. According to this hypothesis, prostheses improved the performance in a complex sensorimotor task and increased the mydriasis associated with haptic tasks. In conclusion, the present study indicates that the implant-prosthesis therapy, which reduces the unbalance of trigeminal proprioceptive afferents and the asymmetry in pupil's size, may improve arousal, boosting performance in a complex sensorimotor task.
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Affiliation(s)
- Vincenzo De Cicco
- Department of Translational Research, University of Pisa, Pisa, Italy
| | - Massimo Barresi
- Department of Drug Sciences, University of Catania, Catania, Italy
| | | | | | | | - Diego Manzoni
- Department of Translational Research, University of Pisa, Pisa, Italy
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Dunlop K, Hanlon CA, Downar J. Noninvasive brain stimulation treatments for addiction and major depression. Ann N Y Acad Sci 2016; 1394:31-54. [PMID: 26849183 PMCID: PMC5434820 DOI: 10.1111/nyas.12985] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Major depressive disorder (MDD) and substance use disorders (SUDs) are prevalent, disabling, and challenging illnesses for which new treatment options are needed, particularly in comorbid cases. Neuroimaging studies of the functional architecture of the brain suggest common neural substrates underlying MDD and SUDs. Intrinsic brain activity is organized into a set of functional networks, of which two are particularly relevant to psychiatry. The salience network (SN) is crucial for cognitive control and response inhibition, and deficits in SN function are implicated across a wide variety of psychiatric disorders, including MDD and SUDs. The ventromedial network (VMN) corresponds to the classic reward circuit, and pathological VMN activity for drug cues/negative stimuli is seen in SUDs/MDD. Noninvasive brain stimulation (NIBS) techniques, including rTMS and tDCS, have been used to enhance cortico–striatal–thalamic activity through the core SN nodes in the dorsal anterior cingulate cortex, dorsolateral prefrontal cortex, and anterior insula. Improvements in both MDD and SUD symptoms ensue, including in comorbid cases, via enhanced cognitive control. Inhibition of the VMN also appears promising in preclinical studies for quenching the pathological incentive salience underlying SUDs and MDD. Evolving techniques may further enhance the efficacy of NIBS for MDD and SUD cases that are unresponsive to conventional treatments.
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Affiliation(s)
- Katharine Dunlop
- MRI-Guided rTMS Clinic, University Health Network, Toronto, Ontario, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Colleen A Hanlon
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, South Carolina.,Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina.,Center for Biomedical Imaging, Medical University of South Carolina, Charleston, South Carolina
| | - Jonathan Downar
- MRI-Guided rTMS Clinic, University Health Network, Toronto, Ontario, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada
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Cook IA, Abrams M, Leuchter AF. Trigeminal Nerve Stimulation for Comorbid Posttraumatic Stress Disorder and Major Depressive Disorder. Neuromodulation 2016; 19:299-305. [PMID: 26818103 DOI: 10.1111/ner.12399] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/27/2015] [Accepted: 12/28/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVES External stimulation of the trigeminal nerve (eTNS) is an emerging neuromodulation therapy for epilepsy and depression. Preliminary studies suggest it has an excellent safety profile and is associated with significant improvements in seizures and mood. Neuroanatomical projections of the trigeminal system suggest eTNS may alter activity in structures regulating mood, anxiety, and sleep. In this proof-of-concept trial, the effects of eTNS were evaluated in adults with posttraumatic stress disorder (PTSD) and comorbid unipolar major depressive disorder (MDD) as an adjunct to pharmacotherapy for these commonly co-occurring conditions. MATERIALS AND METHODS Twelve adults with PTSD and MDD were studied in an eight-week open outpatient trial (age 52.8 [13.7 sd], 8F:4M). Stimulation was applied to the supraorbital and supratrochlear nerves for eight hours each night as an adjunct to pharmacotherapy. Changes in symptoms were monitored using the PTSD Patient Checklist (PCL), Hamilton Depression Rating Scale (HDRS-17), Quick Inventory of Depressive Symptomatology (QIDS-C), and the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q). RESULTS Over the eight weeks, eTNS treatment was associated with significant decreases in PCL (p = 0.003; median decrease of 15 points; effect size d 1.5), HDRS-17 (p < 0.001; 42% response rate, 25% remission; d 2.1), and QIDS-C scores (p < 0.001; d 1.8), as well as an improvement in quality of life (Q-LES-Q, p < 0.01). eTNS was well tolerated with few treatment emergent adverse events. CONCLUSIONS Significant improvements in PTSD and depression severity were achieved in the eight weeks of acute eTNS treatment. This novel approach to wearable brain stimulation may have use as an adjunct to pharmacotherapy in these disorders if efficacy and tolerability are confirmed with additional studies.
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Affiliation(s)
- Ian A Cook
- Neuromodulation Division, Semel Institute for Neuroscience and Human Behavior at UCLA, Los Angeles, CA, USA.,Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,Department of Bioengineering, Henry Samueli School of Engineering and Applied Sciences at UCLA, Los Angeles, CA, USA.,NeuroSigma, Inc, Los Angeles, CA, USA
| | - Michelle Abrams
- Neuromodulation Division, Semel Institute for Neuroscience and Human Behavior at UCLA, Los Angeles, CA, USA.,Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Andrew F Leuchter
- Neuromodulation Division, Semel Institute for Neuroscience and Human Behavior at UCLA, Los Angeles, CA, USA.,Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Trevizol AP, Shiozawa P, Cook IA, Sato IA, dos Santos Guimarães FB, Diniz BSDO, Lowenthal R, Barros MD, Cordeiro Q. Trigeminal Nerve Stimulation (TNS) for Major Depressive Disorder in the Elderly: An Open Label Proof-of-Concept Trial. Brain Stimul 2016; 9:146-7. [DOI: 10.1016/j.brs.2015.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 10/01/2015] [Accepted: 10/12/2015] [Indexed: 10/22/2022] Open
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Trevizol AP, Sato IA, Cook IA, Lowenthal R, Barros MD, Cordeiro Q, Shiozawa P. Trigeminal Nerve Stimulation (TNS) for Panic Disorder: An Open Label Proof-of-Concept Trial. Brain Stimul 2016; 9:161-2. [DOI: 10.1016/j.brs.2015.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 10/21/2015] [Accepted: 10/24/2015] [Indexed: 10/22/2022] Open
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Pilurzi G, Mercante B, Ginatempo F, Follesa P, Tolu E, Deriu F. Transcutaneous trigeminal nerve stimulation induces a long-term depression-like plasticity of the human blink reflex. Exp Brain Res 2015; 234:453-61. [PMID: 26514812 DOI: 10.1007/s00221-015-4477-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/15/2015] [Indexed: 01/17/2023]
Abstract
The beneficial effects of trigeminal nerve stimulation (TNS) on several neurological disorders are increasingly acknowledged. Hypothesized mechanisms include the modulation of excitability in networks involved by the disease, and its main site of action has been recently reported at brain stem level. Aim of this work was to test whether acute TNS modulates brain stem plasticity using the blink reflex (BR) as a model. The BR was recorded from 20 healthy volunteers before and after 20 min of cyclic transcutaneous TNS delivered bilaterally to the infraorbital nerve. Eleven subjects underwent sham-TNS administration and were compared to the real-TNS group. In 12 subjects, effects of unilateral TNS were tested. The areas of the R1 and R2 components of the BR were recorded before and after 0 (T0), 15 (T15), 30 (T30), and 45 (T45) min from TNS. In three subjects, T60 and T90 time points were also evaluated. Ipsi- and contralateral R2 areas were significantly suppressed after bilateral real-TNS at T15 (p = 0.013), T30 (p = 0.002), and T45 (p = 0.001), while R1 response appeared unaffected. The TNS-induced inhibitory effect on R2 responses lasted up to 60 min. Real- and sham-TNS protocols produced significantly different effects (p = 0.005), with sham-TNS being ineffective at any time point tested. Bilateral TNS was more effective (p = 0.009) than unilateral TNS. Acute TNS induced a bilateral long-lasting inhibition of the R2 component of the BR, which resembles a long-term depression-like effect, providing evidence of brain stem plasticity produced by transcutaneous TNS. These findings add new insight into mechanisms of TNS neuromodulation and into physiopathology of those neurological disorders where clinical benefits of TNS are recognized.
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Affiliation(s)
- Giovanna Pilurzi
- Neurological Clinic, Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 10, 07100, Sassari, Italy.
| | - Beniamina Mercante
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy.
| | - Francesca Ginatempo
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy.
| | - Paolo Follesa
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, 09042, Monserrato, Italy.
| | - Eusebio Tolu
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy.
| | - Franca Deriu
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/b, 07100, Sassari, Italy.
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Transdermal neuromodulation of noradrenergic activity suppresses psychophysiological and biochemical stress responses in humans. Sci Rep 2015; 5:13865. [PMID: 26353920 PMCID: PMC4564766 DOI: 10.1038/srep13865] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 08/07/2015] [Indexed: 01/31/2023] Open
Abstract
We engineered a transdermal neuromodulation approach that targets peripheral (cranial and spinal) nerves and utilizes their afferent pathways as signaling conduits to influence brain function. We investigated the effects of this transdermal electrical neurosignaling (TEN) method on sympathetic physiology under different experimental conditions. The TEN method involved delivering high-frequency pulsed electrical currents to ophthalmic and maxillary divisions of the right trigeminal nerve and cervical spinal nerve afferents. Under resting conditions, TEN significantly suppressed basal sympathetic tone compared to sham as indicated by functional infrared thermography of facial temperatures. In a different experiment, subjects treated with TEN reported significantly lower levels of tension and anxiety on the Profile of Mood States scale compared to sham. In a third experiment when subjects were experimentally stressed TEN produced a significant suppression of heart rate variability, galvanic skin conductance, and salivary α-amylase levels compared to sham. Collectively these observations demonstrate TEN can dampen basal sympathetic tone and attenuate sympathetic activity in response to acute stress induction. Our physiological and biochemical observations are consistent with the hypothesis that TEN modulates noradrenergic signaling to suppress sympathetic activity. We conclude that dampening sympathetic activity in such a manner represents a promising approach to managing daily stress.
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Trevizol AP, Cordeiro Q, Cook IA, Barros MD, Shiozawa P. Trigeminal Nerve Stimulation (TNS) for the Treatment of Irritable Bowel Syndrome in an Elderly Patient with Major Depressive Disorder: A Case Study. Brain Stimul 2015; 8:1235-6. [PMID: 26433608 DOI: 10.1016/j.brs.2015.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 08/26/2015] [Accepted: 09/02/2015] [Indexed: 02/07/2023] Open
Affiliation(s)
- Alisson Paulino Trevizol
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil.
| | - Quirino Cordeiro
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
| | - Ian A Cook
- Neuromodulation Division, Departments of Psychiatry and Bioengineering, University of California, Los Angeles, USA
| | - Mirna Duarte Barros
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
| | - Pedro Shiozawa
- Interdisciplinary Center for Clinical Neuromodulation, Santa Casa School of Medical Sciences, São Paulo, Brazil
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Mercante B, Pilurzi G, Ginatempo F, Manca A, Follesa P, Tolu E, Deriu F. Trigeminal nerve stimulation modulates brainstem more than cortical excitability in healthy humans. Exp Brain Res 2015; 233:3301-11. [DOI: 10.1007/s00221-015-4398-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 07/27/2015] [Indexed: 12/30/2022]
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48
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Conway CR, Colijn MA, Schachter SC. Vagus Nerve Stimulation for Epilepsy and Depression. Brain Stimul 2015. [DOI: 10.1002/9781118568323.ch17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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49
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Trevizol AP, Shiozawa P, Albuquerque Sato I, da Silva ME, de Barros Calfat EL, Alberto RL, Cook IA, Cordeiro Q. Trigeminal Nerve Stimulation (TNS) for Post-traumatic Stress Disorder: A Case Study. Brain Stimul 2015; 8:676-8. [DOI: 10.1016/j.brs.2015.02.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 02/16/2015] [Accepted: 02/22/2015] [Indexed: 11/30/2022] Open
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50
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Trigeminal Nerve Stimulation (TNS) for Generalized Anxiety Disorder: A Case Study. Brain Stimul 2015; 8:659-60. [DOI: 10.1016/j.brs.2014.12.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Revised: 12/23/2014] [Accepted: 12/26/2014] [Indexed: 11/18/2022] Open
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