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Tippett DC, Neophytou K, Tao Y, Gallegos J, Morrow C, Onyike CU, Tsapkini K. Long-term, home-based transcranial direct current stimulation coupled with computerized cognitive training in frontotemporal dementia: A case report. J Cent Nerv Syst Dis 2024; 16:11795735241258435. [PMID: 38835997 PMCID: PMC11149448 DOI: 10.1177/11795735241258435] [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: 12/09/2023] [Accepted: 05/02/2024] [Indexed: 06/06/2024] Open
Abstract
We present the case of a 62-year-old woman with probable behavioral variant of frontotemporal dementia (bvFTD) with cognitive/language deficits who demonstrated improved performance on cognitive/language testing and in functional tasks following long-term, home-based transcranial direct current stimulation (tDCS) coupled with computerized cognitive training (CCT). The patient underwent home-based tDCS (anode on the left prefrontal cortex and cathode on the right homologue) for 46 sessions over 10 weeks along with CCT. On post-treatment testing, the patient improved by 3 points on the Mini-Mental State Exam (MMSE) (23 to 26). She also showed improvement on several cognitive/language tasks, such as immediate recall of single words and word pairs, total accurate words in sentence repetition, delayed recall, semantic processing, and sentence level comprehension. There was no decline in several other cognitive and language tasks. Family members reported subjective improvements in expressiveness, communication, and interaction with others as well as increased attention to grooming and style which contrasted with her pre-treatment condition. This report suggests that home-based tDCS combined with CCT for an extended period may slow decline, and improve cognitive/language performance and everyday function in FTD.
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Affiliation(s)
- Donna C Tippett
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kyriaki Neophytou
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yuan Tao
- Department of Cognitive Science, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, USA
| | - Jessica Gallegos
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Christopher Morrow
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Chiadi U Onyike
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kyrana Tsapkini
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Aljeradat B, Kumar D, Abdulmuizz S, Kundu M, Almealawy YF, Batarseh DR, Atallah O, Ennabe M, Alsarafandi M, Alan A, Weinand M. Neuromodulation and the Gut-Brain Axis: Therapeutic Mechanisms and Implications for Gastrointestinal and Neurological Disorders. PATHOPHYSIOLOGY 2024; 31:244-268. [PMID: 38804299 PMCID: PMC11130832 DOI: 10.3390/pathophysiology31020019] [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: 03/31/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/29/2024] Open
Abstract
The gut-brain axis (GBA) represents a complex, bidirectional communication network that intricately connects the gastrointestinal tract with the central nervous system (CNS). Understanding and intervening in this axis opens a pathway for therapeutic advancements for neurological and gastrointestinal diseases where the GBA has been proposed to play a role in the pathophysiology. In light of this, the current review assesses the effectiveness of neuromodulation techniques in treating neurological and gastrointestinal disorders by modulating the GBA, involving key elements such as gut microbiota, neurotrophic factors, and proinflammatory cytokines. Through a comprehensive literature review encompassing PubMed, Google Scholar, Web of Science, and the Cochrane Library, this research highlights the role played by the GBA in neurological and gastrointestinal diseases, in addition to the impact of neuromodulation on the management of these conditions which include both gastrointestinal (irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and gastroesophageal reflux disease (GERD)) and neurological disorders (Parkinson's disease (PD), Alzheimer's disease (AD), autism spectrum disorder (ASD), and neuropsychiatric disorders). Despite existing challenges, the ability of neuromodulation to adjust disrupted neural pathways, alleviate pain, and mitigate inflammation is significant in improving the quality of life for patients, thereby offering exciting prospects for future advancements in patient care.
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Affiliation(s)
- Baha’ Aljeradat
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Danisha Kumar
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- Dow Medical College, Dow University of Health Sciences, Karachi 74200, Pakistan
| | - Sulaiman Abdulmuizz
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- College of Health Sciences, University of Ilorin, Ilorin 240003, Kwara, Nigeria
| | - Mrinmoy Kundu
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- Institute of Medical Sciences and SUM Hospital, Bhubaneswar 751029, India
| | - Yasser F. Almealawy
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- Faculty of Medicine, University of Kufa, Kufa P.O. Box 21, Iraq
| | - Dima Ratib Batarseh
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Oday Atallah
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- Department of Neurosurgery, Hannover Medical School, 30625 Hannover, Germany
| | - Michelle Ennabe
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- College of Medicine, The University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Muath Alsarafandi
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- College of Medicine, Islamic University of Gaza, Rafa Refugee Camp, Rafa P.O. Box 108, Palestine
- Faculty of Medicine, Islamic University of Gaza, Gaza P.O. Box 108, Palestine
| | - Albert Alan
- Global Neurosurgical Alliance, Tucson, AZ 85716, USA; (B.A.); (D.K.); (S.A.); (M.K.); (Y.F.A.); (D.R.B.); (O.A.); (M.E.); (M.A.)
- Department of Neurosurgery, University of Arizona, Tucson, AZ 85724, USA;
- College of Medicine, The University of Arizona College of Medicine, Tucson, AZ 85004, USA
| | - Martin Weinand
- Department of Neurosurgery, University of Arizona, Tucson, AZ 85724, USA;
- College of Medicine, The University of Arizona College of Medicine, Tucson, AZ 85004, USA
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Tanaka M, Battaglia S, Giménez-Llort L, Chen C, Hepsomali P, Avenanti A, Vécsei L. Innovation at the Intersection: Emerging Translational Research in Neurology and Psychiatry. Cells 2024; 13:790. [PMID: 38786014 PMCID: PMC11120114 DOI: 10.3390/cells13100790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024] Open
Abstract
Translational research in neurological and psychiatric diseases is a rapidly advancing field that promises to redefine our approach to these complex conditions [...].
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Affiliation(s)
- Masaru Tanaka
- HUN-REN-SZTE Neuroscience Research Group, Hungarian Research Network, University of Szeged (HUN-REN-SZTE), Danube Neuroscience Research Laboratory, Tisza Lajos krt. 113, H-6725 Szeged, Hungary;
| | - Simone Battaglia
- Center for Studies and Research in Cognitive Neuroscience, Department of Psychology “Renzo Canestrari”, Cesena Campus, Alma Mater Studiorum Università di Bologna, 47521 Cesena, Italy;
- Department of Psychology, University of Turin, 10124 Turin, Italy
| | - Lydia Giménez-Llort
- Institut de Neurociències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain;
- Department of Psychiatry & Forensic Medicine, Faculty of Medicine, Campus Bellaterra, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Chong Chen
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan;
| | - Piril Hepsomali
- School of Psychology and Clinical Language Sciences, University of Reading, Reading RG6 6ET, UK;
| | - Alessio Avenanti
- Center for Studies and Research in Cognitive Neuroscience, Department of Psychology “Renzo Canestrari”, Cesena Campus, Alma Mater Studiorum Università di Bologna, 47521 Cesena, Italy;
- Neuropsychology and Cognitive Neuroscience Research Center (CINPSI Neurocog), Universidad Católica del Maule, Talca 3460000, Chile
| | - László Vécsei
- HUN-REN-SZTE Neuroscience Research Group, Hungarian Research Network, University of Szeged (HUN-REN-SZTE), Danube Neuroscience Research Laboratory, Tisza Lajos krt. 113, H-6725 Szeged, Hungary;
- Department of Neurology, Albert Szent-Györgyi Medical School, University of Szeged, Semmelweis u. 6, H-6725 Szeged, Hungary
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Chu M, Li S, Wang Y, Lui SSY, Chan RCK. The effect of noninvasive brain stimulation on anhedonia in patients with schizophrenia and depression: A systematic review and meta-analysis. Psych J 2024; 13:166-175. [PMID: 38151800 PMCID: PMC10990806 DOI: 10.1002/pchj.723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 11/28/2023] [Indexed: 12/29/2023]
Abstract
Anhedonia is a transdiagnostic symptom found in patients with schizophrenia and depression. Current pharmacological interventions for anhedonia are unsatisfactory in a considerable proportion of patients. There has been growing interest in applying noninvasive brain stimulation (NIBS) to patients with anhedonia. However, evidence for the efficacy of NIBS for anhedonia remain inconsistent. This study systematically identified all studies that measured anhedonia and applied NIBS in patients with schizophrenia or depression. We conducted a search using the various databases in English (PubMed, EBSCOHost (PsycInfo/PsycArticles), Web of Science) and Chinese (China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform) languages, and reviewed original research articles on NIBS published from January 1989 to July 2023. Our search had identified 15 articles for quantitative synthesis, with three concerning schizophrenia samples, 11 concerning samples with depression, and one concerning both clinical samples. We conducted a meta-analysis based on the 15 included studies, and the results suggested that NIBS could improve anhedonia symptoms in schizophrenia patients and patients with depression, with a medium-to-large effect size. Our findings are preliminary, given the limited number of included studies. Future NIBS research should measure anhedonia as a primary outcome and should recruit transdiagnostic samples.
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Affiliation(s)
- Min‐yi Chu
- Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Shuai‐biao Li
- Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yi Wang
- Neuropsychology and Applied Cognitive Neuroscience LaboratoryCAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of SciencesBeijingChina
- Department of PsychologyUniversity of Chinese Academy of SciencesBeijingChina
| | - Simon S. Y. Lui
- Department of Psychiatry, School of Clinical MedicineThe University of Hong KongHong KongChina
| | - Raymond C. K. Chan
- Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina
- Neuropsychology and Applied Cognitive Neuroscience LaboratoryCAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of SciencesBeijingChina
- Department of PsychologyUniversity of Chinese Academy of SciencesBeijingChina
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Alizadehgoradel J, Molaei B, Barzegar Jalali K, Pouresmali A, Sharifi K, Hallajian AH, Nejati V, Glinski B, Vicario CM, Nitsche MA, Salehinejad MA. Targeting the prefrontal-supplementary motor network in obsessive-compulsive disorder with intensified electrical stimulation in two dosages: a randomized, controlled trial. Transl Psychiatry 2024; 14:78. [PMID: 38316750 PMCID: PMC10844238 DOI: 10.1038/s41398-024-02736-y] [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: 07/28/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
Obsessive-compulsive disorder (OCD) is associated with a high disease burden, and treatment options are limited. We used intensified electrical stimulation in two dosages to target a main circuitry associated with the pathophysiology of OCD, left dorsolateral prefrontal cortex (l-DLPFC), and pre-supplementary motor area (pre-SMA) and assessed clinical outcomes, neuropsychological performance, and brain physiology. In a double-blind, randomized controlled trial, thirty-nine patients with OCD were randomly assigned to three groups of sham, 2-mA, or 1-mA transcranial direct current stimulation (tDCS) targeting the l-DLPFC (F3) and pre-SMA (FC2) with anodal and cathodal stimulation respectively. The treatment included 10 sessions of 20-minute stimulation delivered twice per day with 20-min between-session intervals. Outcome measures were reduction in OCD symptoms, anxiety, and depressive states, performance on a neuropsychological test battery (response inhibition, working memory, attention), oscillatory brain activities, and functional connectivity. All outcome measures except EEG were examined at pre-intervention, post-intervention, and 1-month follow-up times. The 2-mA protocol significantly reduced OCD symptoms, anxiety, and depression states and improved quality of life after the intervention up to 1-month follow-up compared to the sham group, while the 1-mA protocol reduced OCD symptoms only in the follow-up and depressive state immediately after and 1-month following the intervention. Both protocols partially improved response inhibition, and the 2-mA protocol reduced attention bias to OCD-related stimuli and improved reaction time in working memory performance. Both protocols increased alpha oscillatory power, and the 2-mA protocol decreased delta power as well. Both protocols increased connectivity in higher frequency bands at frontal-central areas compared to the sham. Modulation of the prefrontal-supplementary motor network with intensified tDCS ameliorates OCD clinical symptoms and results in beneficial cognitive effects. The 2-mA intensified stimulation resulted in larger symptom reduction and improved more converging outcome variables related to therapeutic efficacy. These results support applying the intensified prefrontal-SMA tDCS in larger trials.
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Affiliation(s)
| | - Behnam Molaei
- Department of Psychiatry and Psychology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | | | - Asghar Pouresmali
- Department of Family Health, Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Kiomars Sharifi
- Sharif Brain Center, Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran
| | | | - Vahid Nejati
- Department of Psychology, Shahid Beheshti University, Tehran, Iran
| | - Benedikt Glinski
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Carmelo M Vicario
- Dipartimento di Scienze Cognitive, Psicologiche, Pedagogiche e degli studi culturali, Università di Messina, Messina, Italy
| | - Michael A Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
- Bielefeld University, University Hospital OWL, Protestant Hospital of Bethel Foundation, University Clinic of Psychiatry and Psychotherapy and University Clinic of Child and Adolescent Psychiatry and Psychotherapy, Bielefeld, Germany
- German Centre for Mental Health (DZPG), Bochum, Germany
| | - Mohammad Ali Salehinejad
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran.
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany.
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Ankri YLE, Braw YC, Meiron O. Stress and Right Prefrontal Transcranial Direct Current Stimulation (tDCS) Interactive Effects on Visual Working Memory and Learning. Brain Sci 2023; 13:1642. [PMID: 38137090 PMCID: PMC10741696 DOI: 10.3390/brainsci13121642] [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: 10/31/2023] [Revised: 11/16/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Stress impacts prefrontal cortex (PFC) activity and modulates working memory performance. In a recent study, stimulating the dorsolateral PFC (dlPFC) using transcranial direct current stimulation (tDCS) interacted with social stress in modulating participants' working memory. More specifically, stress disrupted the enhancing effects of dlPFC tDCS on working memory performance. The current study aimed to further explore these initial findings by randomizing healthy females to four experimental conditions (N = 130); stimulation (right dlPFC tDCS vs. sham) and stress manipulation (social stress vs. control). Participants performed cognitive tasks (i.e., visual working memory task and a visual declarative memory task) at baseline and post-stimulation. They also completed self-report measures of stress and anxiety. A significant stimulation × stress interaction was evident in the declarative memory (One-Card Learning, OCL) task, while working memory performance was unaffected. Though tDCS stimulation and stress did not interact to affect working memory, further research is warranted as these initial findings suggest that immediate visual-memory learning may be affected by these factors. The limited number of earlier studies, as well as the variability in their designs, provides additional impetus for studying the interactive effects of stress and tDCS on human visual learning.
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Affiliation(s)
- Yael L. E. Ankri
- Department of Psychology, Ariel University, Ariel 4077625, Israel; (Y.L.E.A.); (Y.C.B.)
| | - Yoram C. Braw
- Department of Psychology, Ariel University, Ariel 4077625, Israel; (Y.L.E.A.); (Y.C.B.)
| | - Oded Meiron
- Faculty of Education, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Clinical Research Center for Brain Sciences, Herzog Medical Center, P.O. Box 3900, Jerusalem 9103702, Israel
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Rodrigues NO, Vidal Bravalhieri AA, de Moraes TP, Barros JA, Ansai JH, Christofoletti G. Efficacy of Transcranial Direct Current Stimulation (tDCS) on Cognition, Anxiety, and Mobility in Community-Dwelling Older Individuals: A Controlled Clinical Trial. Brain Sci 2023; 13:1614. [PMID: 38137062 PMCID: PMC10741841 DOI: 10.3390/brainsci13121614] [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: 10/24/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
Transcranial direct current stimulation (tDCS) has gained popularity as a method of modulating cortical excitability in people with physical and mental disabilities. However, there is a lack of consensus on its effectiveness in older individuals. This study aimed to assess the efficacy of a 2-month tDCS program for improving physical and mental performance in community-dwelling older individuals. In this single-blinded, controlled clinical trial, forty-two participants were allocated to one of three groups: (1) the tDCS group, which received, twice a week, 20 min sessions of 2 mA electric current through electrodes placed on the dorsolateral prefrontal cortex; (2) the tDCS-placebo group, which underwent the same electrode placement as the tDCS group but without actual electric stimulation; and (3) the cognitive-control group, which completed crossword puzzles. Main outcome measures were cognition, mobility, and anxiety. Multivariate analyses of variance were employed. Significance was set at 5% (p < 0.05). Regarding the results, no significant benefits were observed in the tDCS group compared with the tDCS-placebo or cognitive-control groups for cognition (p = 0.557), mobility (p = 0.871), or anxiety (p = 0.356). Cognition exhibited positive oscillations during the assessments (main effect of time: p = 0.001). However, given that all groups showed similar variations in cognitive scores (main effect of group: p = 0.101; group × time effect: p = 0.557), it is more likely that the improvement reflects the learning response of the participants to the cognitive tests rather than the effect of tDCS. In conclusion, a 2-month tDCS program with two sessions per week appears to be ineffective in improving physical and mental performance in community-dwelling older individuals. Further studies are necessary to establish whether or not tDCS is effective in healthy older individuals.
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Affiliation(s)
- Nathalia Oliveira Rodrigues
- Institute of Health, Faculty of Medicine, Federal University of Mato Grosso do Sul (UFMS), Campo Grande 79060-900, Brazil; (N.O.R.); (A.A.V.B.); (T.P.d.M.)
| | - Anna Alice Vidal Bravalhieri
- Institute of Health, Faculty of Medicine, Federal University of Mato Grosso do Sul (UFMS), Campo Grande 79060-900, Brazil; (N.O.R.); (A.A.V.B.); (T.P.d.M.)
| | - Tatiane Pereira de Moraes
- Institute of Health, Faculty of Medicine, Federal University of Mato Grosso do Sul (UFMS), Campo Grande 79060-900, Brazil; (N.O.R.); (A.A.V.B.); (T.P.d.M.)
| | - Jorge Aparecido Barros
- Department of Physical Therapy, Dom Bosco Catholic University (UCDB), Campo Grande 79117-900, Brazil;
| | - Juliana Hotta Ansai
- Department of Gerontology, Federal University of São Carlos (UFSCAR), São Carlos 13565-905, Brazil;
| | - Gustavo Christofoletti
- Institute of Health, Faculty of Medicine, Federal University of Mato Grosso do Sul (UFMS), Campo Grande 79060-900, Brazil; (N.O.R.); (A.A.V.B.); (T.P.d.M.)
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Koutsomitros T, Schwarz SA, van der Zee KT, Schuhmann T, Sack AT. Home-administered transcranial direct current stimulation with asynchronous remote supervision in the treatment of depression: feasibility, tolerability, and clinical effectiveness. Front Psychiatry 2023; 14:1206805. [PMID: 38025428 PMCID: PMC10652875 DOI: 10.3389/fpsyt.2023.1206805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Background Depression is an often chronic condition, characterized by wide-ranging physical, cognitive and psychosocial symptoms that can lead to disability, premature mortality or suicide. It affects 350 million people globally, yet up to 30% do not respond to traditional treatment, creating an urgent need for novel non-pharmacological treatments. This open-label naturalistic study assesses the practical feasibility, tolerability, and clinical effectiveness of home-administered transcranial direct current stimulation (tDCS) with asynchronous remote supervision, in the treatment of depression. Method Over the course of 3 weeks, 40 patients with depression received psychotherapy and half of this group also received daily bi-frontal tDCS stimulation of the dorsolateral prefrontal cortex. These patients received tDCS for 30 min per session with the anode placed over F3 and the cathode over F4, at an intensity of 2 mA for 21 consecutive days. We measured patients' level of depression symptoms at four time points using the Beck Depression Inventory, before treatment and at 1-week intervals throughout the treatment period. We monitored practical feasibility such as daily protocol compliance and tolerability including side effects, with the PlatoScience cloud-based remote supervision platform. Results Of the 20 patients in the tDCS group, 90% were able to comply with the protocol by not missing more than three of their assigned sessions, and none dropped out of the study. No serious adverse events were reported, with only 14 instances of mild to moderate side effects and two instances of scalp pain rated as severe, out of a total of 420 stimulation sessions. Patients in the tDCS group showed a significantly greater reduction in depression symptoms after 3 weeks of treatment, compared to the treatment as usual (TAU) group [t(57.2) = 2.268, p = 0.027]. The tDCS group also showed greater treatment response (50%) and depression remission rates (75%) compared to the TAU group (5 and 30%, respectively). Discussion Conclusion These findings provide a possible indication of the clinical effectiveness of home-administered tDCS for the treatment of depression, and its feasibility and tolerability in combination with asynchronous supervision.
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Affiliation(s)
- Theodoros Koutsomitros
- Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
- Greek rTMS Clinic, Medical Psychotherapeutic Centre (I.Ψ.K.), Thessaloniki, Greece
- Institute of Psychotherapy, Medical Psychotherapeutic Centre (I.Ψ.K.), Thessaloniki, Greece
| | - Sandra A. Schwarz
- Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
| | - Kenneth T. van der Zee
- Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
- Donders Institute, Centre for Cognitive Neuroimaging, Radboud University, Nijmegen, Netherlands
| | - Teresa Schuhmann
- Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
- Brain Imaging Centre (MBIC), Maastricht University, Maastricht, Netherlands
| | - Alexander T. Sack
- Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands
- Brain Imaging Centre (MBIC), Maastricht University, Maastricht, Netherlands
- School for Mental Health and Neuroscience, Brain and Nerve Centre, Maastricht University Medical Centre, Maastricht, Netherlands
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Shao T, Huang J, Zhao Y, Wang W, Tian X, Hei G, Kang D, Gao Y, Liu F, Zhao J, Liu B, Yuan TF, Wu R. Metformin improves cognitive impairment in patients with schizophrenia: associated with enhanced functional connectivity of dorsolateral prefrontal cortex. Transl Psychiatry 2023; 13:315. [PMID: 37821461 PMCID: PMC10567690 DOI: 10.1038/s41398-023-02616-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/13/2023] Open
Abstract
Cognitive impairment is a core feature of schizophrenia, which is aggravated by antipsychotics-induced metabolic disturbance and lacks effective pharmacologic treatments in clinical practice. Our previous study demonstrated the efficiency of metformin in alleviating metabolic disturbance following antipsychotic administration. Here we report that metformin could ameliorate cognitive impairment and improve functional connectivity (FC) in prefrontal regions. This is an open-labeled, evaluator-blinded study. Clinically stable patients with schizophrenia were randomly assigned to receive antipsychotics plus metformin (N = 48) or antipsychotics alone (N = 24) for 24 weeks. The improvement in cognition was assessed by the MATRICS Consensus Cognitive Battery (MCCB). Its association with metabolic measurements, and voxel-wise whole-brain FC with dorsolateral prefrontal cortex (DLPFC) subregions as seeds were evaluated. When compared to the antipsychotics alone group, the addition of metformin resulted in significantly greater improvements in the MCCB composite score, speed of processing, working memory, verbal learning, and visual learning. A significant time × group interaction effect of increased FC between DLPFC and the anterior cingulate cortex (ACC)/middle cingulate cortex (MCC), and between DLPFC subregions were observed after metformin treatment, which was positively correlated with MCCB cognitive performance. Furthermore, the FC between left DLPFC A9/46d to right ACC/MCC significantly mediated metformin-induced speed of processing improvement; the FC between left A46 to right ACC significantly mediated metformin-induced verbal learning improvement. Collectively, these findings demonstrate that metformin can improve cognitive impairments in schizophrenia patients and is partly related to the FC changes in the DLPFC. Trial Registration: The trial was registered with ClinicalTrials.gov (NCT03271866). The full trial protocol is provided in Supplementary Material.
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Affiliation(s)
- Tiannan Shao
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China
| | - Jing Huang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China
| | - Yuxin Zhao
- Brainnetome Center and National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, PR China
- School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Weiyan Wang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China
| | - Xiaohan Tian
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, 100875, PR China
| | - Gangrui Hei
- Department of Psychiatry, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, PR China
| | - Dongyu Kang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China
| | - Yong Gao
- Department of Orthopedics, The First People's Hospital of Changde, Changde Hospital Affiliated to Xiangya Medical College of Central South University, Changde, 415900, PR China
| | - Fangkun Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, 410008, PR China
| | - Jingping Zhao
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China
| | - Bing Liu
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, 100875, PR China
| | - Ti-Fei Yuan
- Shanghai Key Laboratory of Psychotic Disorders, Brain Health Institute, National Center for Mental Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, PR China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, PR China
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, 200434, PR China
| | - Renrong Wu
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, PR China.
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10
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Kong Q, Sacca V, Zhu M, Ursitti AK, Kong J. Anatomical and Functional Connectivity of Critical Deep Brain Structures and Their Potential Clinical Application in Brain Stimulation. J Clin Med 2023; 12:4426. [PMID: 37445460 DOI: 10.3390/jcm12134426] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
Subcortical structures, such as the hippocampus, amygdala, and nucleus accumbens (NAcc), play crucial roles in human cognitive, memory, and emotional processing, chronic pain pathophysiology, and are implicated in various psychiatric and neurological diseases. Interventions modulating the activities of these deep brain structures hold promise for improving clinical outcomes. Recently, non-invasive brain stimulation (NIBS) has been applied to modulate brain activity and has demonstrated its potential for treating psychiatric and neurological disorders. However, modulating the above deep brain structures using NIBS may be challenging due to the nature of these stimulations. This study attempts to identify brain surface regions as source targets for NIBS to reach these deep brain structures by integrating functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI). We used resting-state functional connectivity (rsFC) and probabilistic tractography (PTG) analysis to identify brain surface stimulation targets that are functionally and structurally connected to the hippocampus, amygdala, and NAcc in 119 healthy participants. Our results showed that the medial prefrontal cortex (mPFC) is functionally and anatomically connected to all three subcortical regions, while the precuneus is connected to the hippocampus and amygdala. The mPFC and precuneus, two key hubs of the default mode network (DMN), as well as other cortical areas distributed at the prefrontal cortex and the parietal, temporal, and occipital lobes, were identified as potential locations for NIBS to modulate the function of these deep structures. The findings may provide new insights into the NIBS target selections for treating psychiatric and neurological disorders and chronic pain.
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Affiliation(s)
- Qiao Kong
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Building 120, 2nd Ave., Charlestown, MA 02129, USA
| | - Valeria Sacca
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Building 120, 2nd Ave., Charlestown, MA 02129, USA
| | - Meixuan Zhu
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Building 120, 2nd Ave., Charlestown, MA 02129, USA
| | - Amy Katherine Ursitti
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Building 120, 2nd Ave., Charlestown, MA 02129, USA
| | - Jian Kong
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Building 120, 2nd Ave., Charlestown, MA 02129, USA
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Hirosawa T, Soma D, Miyagishi Y, Furutani N, Yoshimura Y, Kameya M, Yamaguchi Y, Yaoi K, Sano M, Kitamura K, Takahashi T, Kikuchi M. Effect of transcranial direct current stimulation on the functionality of 40 Hz auditory steady state response brain network: graph theory approach. Front Psychiatry 2023; 14:1156617. [PMID: 37363170 PMCID: PMC10288104 DOI: 10.3389/fpsyt.2023.1156617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 05/22/2023] [Indexed: 06/28/2023] Open
Abstract
Introduction Measuring whole-brain networks of the 40 Hz auditory steady state response (ASSR) is a promising approach to describe the after-effects of transcranial direct current stimulation (tDCS). The main objective of this study was to evaluate the effect of tDCS on the brain network of 40 Hz ASSR in healthy adult males using graph theory. The second objective was to identify a population in which tDCS effectively modulates the brain network of 40 Hz ASSR. Methods This study used a randomized, sham-controlled, double-blinded crossover approach. Twenty-five adult males (20-24 years old) completed two sessions at least 1 month apart. The participants underwent cathodal or sham tDCS of the dorsolateral prefrontal cortex, after which 40 Hz ASSR was measured using magnetoencephalography. After the signal sources were mapped onto the Desikan-Killiany brain atlas, the statistical relationships between localized activities were evaluated in terms of the debiased weighted phase lag index (dbWPLI). Weighted and undirected graphs were constructed for the tDCS and sham conditions based on the dbWPLI. Weighted characteristic path lengths and clustering coefficients were then measured and compared between the tDCS and sham conditions using mixed linear models. Results The characteristic path length was significantly lower post-tDCS simulation (p = 0.04) than after sham stimulation. This indicates that after tDCS simulation, the whole-brain networks of 40 Hz ASSR show a significant functional integration. Simple linear regression showed a higher characteristic path length at baseline, which was associated with a larger reduction in characteristic path length after tDCS. Hence, a pronounced effect of tDCS is expected for those who have a less functionally integrated network of 40 Hz ASSR. Discussion Given that the healthy brain is functionally integrated, we conclude that tDCS could effectively normalize less functionally integrated brain networks rather than enhance functional integration.
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Affiliation(s)
- Tetsu Hirosawa
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan
| | - Daiki Soma
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yoshiaki Miyagishi
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Naoki Furutani
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yuko Yoshimura
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan
- Faculty of Education, Institute of Human and Social Sciences, Kanazawa University, Kanazawa, Japan
| | - Masafumi Kameya
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yohei Yamaguchi
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Ken Yaoi
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masuhiko Sano
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Koji Kitamura
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Tetsuya Takahashi
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Mitsuru Kikuchi
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan
- Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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12
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Yan H, Lau WKW, Eickhoff SB, Long J, Song X, Wang C, Zhao J, Feng X, Huang R, Wang M, Zhang X, Zhang R. Charting the neural circuits disruption in inhibitory control and its subcomponents across psychiatric disorders: A neuroimaging meta-analysis. Prog Neuropsychopharmacol Biol Psychiatry 2022; 119:110618. [PMID: 36002101 DOI: 10.1016/j.pnpbp.2022.110618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 08/01/2022] [Accepted: 08/14/2022] [Indexed: 10/15/2022]
Abstract
BACKGROUND Inhibitory control, comprising cognitive inhibition and response inhibition, showed consistent deficits among several major psychiatric disorders. We aim to identify the trans-diagnostic convergence of neuroimaging abnormalities underlying inhibitory control across psychiatric disorders. METHODS Inhibitory control tasks neuroimaging, including functional magnetic resonance imaging, single-photon emission computed tomography, and positron emission tomography articles published in PubMed and Web of Science before April 2020 comparing healthy controls with patients with several psychiatric disorders were searched. RESULTS 146 experiments on 2653 patients with different disorders and 2764 control participants were included. Coordinates of case-control differences coded by diagnosis and inhibitory control components were analyzed using activation likelihood estimation. A robust trans-diagnostic pattern of aberrant brain activation in the bilateral cingulate gyri extending to medial frontal gyri, right insula, bilateral lentiform nuclei, right inferior frontal gyrus, right precuneus extending to inferior parietal lobule, and right supplementary motor area were detected. Frontostriatal pathways are the commonly disrupted neural circuits in the inhibitory control across psychiatric disorders. Furthermore, Patients showed aberrant activation in the dorsal frontal inhibitory system in cognitive inhibition, while in the frontostriatal system in response inhibition across disorders. CONCLUSION Consistent with the Research Domain Criteria initiative, current findings show that psychiatric disorders may be productively formulated as a phenotype of trans-diagnostic neurocircuit disruption. Our results provide new insights for future research into mental disorders with inhibition-related dysfunctions.
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Affiliation(s)
- Haifeng Yan
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China; Department of Science and Education, The People's Hospital of Gaozhou, Gaozhou, PR China
| | - Way K W Lau
- Department of Special Education and Counselling, The Education University of Hong Kong, Hong Kong, PR China
| | - Simon B Eickhoff
- Institute of Neuroscience and Medicine, Brain and Behavior (INM-7), Research Center Jüelich, Germany; Institute of Systems Neuroscience, Medical Faculty, Heinrich Heine University Düsseldorf, Germany
| | - Jixin Long
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China
| | - Xiaoqi Song
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China
| | - Chanyu Wang
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China
| | - Jiubo Zhao
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China; Department of Psychiatry, Zhujiang Hospital of Southern Medical University, Guangzhou, PR China
| | - Xiangang Feng
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China; Department of Psychiatry, Zhujiang Hospital of Southern Medical University, Guangzhou, PR China
| | - Ruiwang Huang
- School of Psychology, South China Normal University, Guangzhou, PR China
| | - Maosheng Wang
- Department of Science and Education, The People's Hospital of Gaozhou, Gaozhou, PR China
| | - Xiaoyuan Zhang
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China; Department of Psychiatry, Zhujiang Hospital of Southern Medical University, Guangzhou, PR China.
| | - Ruibin Zhang
- Cognitive Control and Brain Healthy Laboratory, Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, PR China; Department of Psychiatry, Zhujiang Hospital of Southern Medical University, Guangzhou, PR China.
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Gao ZB, Zhang WJ, Tuo R, Xiao X, Cao WJ. Transcranial direct current stimulation in the treatment of anxiety and depression in patients with oral cancer during perioperative period. Medicine (Baltimore) 2022; 101:e30220. [PMID: 36107552 PMCID: PMC9439821 DOI: 10.1097/md.0000000000030220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This study retrospectively investigated the efficacy of transcranial direct current stimulation (tDCS) in the treatment of anxiety and depression in patients with oral cancer (OC) during the perioperative period (PPP). This retrospective study reviewed the electronic medical records of patients who underwent OC surgery and experienced anxiety and depression during PPP. The patients were divided into the treatment (n = 36) and control (n = 36) groups. The patients in the treatment group received tDCS, whereas those in the control group did not receive tDCS. The primary outcomes included the Self-rating Anxiety Scale (SAS) and the Self-rating Depression Scale (SDS). Secondary outcomes included adverse events (AEs). We analyzed the outcome data before and after treatment. After treatment, patients in the treatment group achieved greater relief in SAS (P < .01) and SDS (P < .01) scores than those in the control group. Regarding safety, no electronic medical records reported any AEs in this study. The results of this study showed that tDCS may help relieve depression and anxiety in patients with OC during PPP. However, high-quality prospective randomized controlled trials are required to confirm these findings.
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Affiliation(s)
- Zhi-biao Gao
- Department of Oral and Maxillofacial Surgery, Yanan University Affiliated Hospital, Yan’an, China
| | - Wen-juan Zhang
- Department of Oral and Maxillofacial Surgery, Yanan University Affiliated Hospital, Yan’an, China
| | - Rui Tuo
- Department of Oral and Maxillofacial Surgery, Yanan University Affiliated Hospital, Yan’an, China
| | - Xia Xiao
- Department of Oral and Maxillofacial Surgery, Yanan University Affiliated Hospital, Yan’an, China
| | - Wei-jing Cao
- Department of Periodontology, Yanan University Affiliated Hospital, Yan’an, China
- * Correspondence: Wei-jing Cao, MB, Department of Periodontology, Yanan University Affiliated Hospital, No. 43 North Street, Baota District, Yan’an 716000, China (e-mail: )
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14
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Meng Z, Li Q, Ma Y, Liu C. Transcranial direct current stimulation of the frontal-parietal-temporal brain areas reduces cigarette consumption in abstinent heroin users. J Psychiatr Res 2022; 152:321-325. [PMID: 35785574 DOI: 10.1016/j.jpsychires.2022.06.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 06/10/2022] [Accepted: 06/24/2022] [Indexed: 11/28/2022]
Abstract
Transcranial direct current stimulation (tDCS) has been demonstrated to modulate neural activity and related brain functions. In clinical studies, tDCS has been shown to reduce craving in various substance use disorders including cocaine, heroin and nicotine. Our previous report suggested that cathodal tDCS on the frontal-parietal-temporal (FPT) brain areas reduced cigarette consumption in moderate smokers. However, whether it is effective in smokers with history of drug use is unknown. This study investigated the effects of bilateral FPT areas cathodal tDCS on smokers with history of heroin use. 22 abstinent heroin users were recruited and randomly assigned to sham group and tDCS group. The sham group received 30 s tDCS treatment and tDCS group received normal tDCS (one trial of 20 min, 1 mA, cathodal electrodes were placed bilaterally on the FPT areas). The average of daily cigarettes consumption was recorded for the week before the tDCS and the following day after tDCS. In addition, pupil light reflex was measured right before and after tDCS treatment. One trial of tDCS stimulation significantly reduced daily cigarette consumption in smokers who had heroin use history. This reducing effect was also observed in heavy smokers. In addition, this effect on cigarette consumption lasted at least 48 h after the stimulation. Furthermore, it has been shown that opiates decrease pupillary size in humans, we found detectable changes of the dynamic pupil light reflex after bilateral tDCS stimulation. These findings suggest that FPT cathodal tDCS may be an effective approach to reduce cigarette craving in heroin users.
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Affiliation(s)
- Zhiqiang Meng
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518000, China; CAS Key Laboratory of Brain Connectome and Manipulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; Shenzhen-Hong Kong Institute of Brain Sciences-Shenzhen Fundamental Research, Institutions, Shenzhen, 518000, China.
| | - Qing Li
- Shenzhen Key Laboratory of Drug Addiction, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518000, China; Medical School, Kunming University of Science and Technology, Kunming, China
| | - Yuanye Ma
- Medical School, Kunming University of Science and Technology, Kunming, China; Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Chang Liu
- Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518000, China; CAS Key Laboratory of Brain Connectome and Manipulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; Shenzhen-Hong Kong Institute of Brain Sciences-Shenzhen Fundamental Research, Institutions, Shenzhen, 518000, China.
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