1
|
Chang RS, Lee M, Im JJ, Choi KH, Kim J, Chey J, Shin SH, Ahn WY. Biopsychosocial factors of gaming disorder: a systematic review employing screening tools with well-defined psychometric properties. Front Psychiatry 2023; 14:1200230. [PMID: 37533885 PMCID: PMC10390702 DOI: 10.3389/fpsyt.2023.1200230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/21/2023] [Indexed: 08/04/2023] Open
Abstract
Background and aims Considering the growing number of gamers worldwide and increasing public concerns regarding the negative consequences of problematic gaming, the aim of the present systematic review was to provide a comprehensive overview of gaming disorder (GD) by identifying empirical studies that investigate biological, psychological, and social factors of GD using screening tools with well-defined psychometric properties. Materials and methods A systematic literature search was conducted through PsycINFO, PubMed, RISS, and KISS, and papers published up to January 2022 were included. Studies were screened based on the GD diagnostic tool usage, and only five scales with well-established psychometric properties were included. A total of 93 studies were included in the synthesis, and the results were classified into three groups based on biological, psychological, and social factors. Results Biological factors (n = 8) included reward, self-concept, brain structure, and functional connectivity. Psychological factors (n = 67) included psychiatric symptoms, psychological health, emotion regulation, personality traits, and other dimensions. Social factors (n = 29) included family, social interaction, culture, school, and social support. Discussion When the excess amount of assessment tools with varying psychometric properties were controlled for, mixed results were observed with regards to impulsivity, social relations, and family-related factors, and some domains suffered from a lack of study results to confirm any relevant patterns. Conclusion More longitudinal and neurobiological studies, consensus on a diagnostic tool with well-defined psychometric properties, and an in-depth understanding of gaming-related factors should be established to settle the debate regarding psychometric weaknesses of the current diagnostic system and for GD to gain greater legitimacy in the field of behavioral addiction.
Collapse
Affiliation(s)
- Rose Seoyoung Chang
- Department of Psychology, Seoul National University, Seoul, Republic of Korea
| | - Minju Lee
- Department of Psychology, Seoul National University, Seoul, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Psychology, Seoul National University, Seoul, Republic of Korea
| | - Kee-Hong Choi
- School of Psychology, Korea University, Seoul, Republic of Korea
| | - Jueun Kim
- Department of Psychology, Chungnam National University, Daejeon, Republic of Korea
| | - Jeanyung Chey
- Department of Psychology, Seoul National University, Seoul, Republic of Korea
| | - Suk-Ho Shin
- Department of Child and Adolescent Psychiatry, Dr. Shin’s Neuropsychiatric Clinic, Seoul, Republic of Korea
| | - Woo-Young Ahn
- Department of Psychology, Seoul National University, Seoul, Republic of Korea
| |
Collapse
|
2
|
Yeh TC, Huang CCY, Chung YA, Park SY, Im JJ, Lin YY, Ma CC, Tzeng NS, Chang HA. Resting-State EEG Connectivity at High-Frequency Bands and Attentional Performance Dysfunction in Stabilized Schizophrenia Patients. Medicina (Kaunas) 2023; 59:medicina59040737. [PMID: 37109695 PMCID: PMC10141517 DOI: 10.3390/medicina59040737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/24/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: Attentional dysfunction has long been viewed as one of the fundamental underlying cognitive deficits in schizophrenia. There is an urgent need to understand its neural underpinning and develop effective treatments. In the process of attention, neural oscillation has a central role in filtering information and allocating resources to either stimulus-driven or goal-relevant objects. Here, we asked if resting-state EEG connectivity correlated with attentional performance in schizophrenia patients. Materials and Methods: Resting-state EEG recordings were obtained from 72 stabilized patients with schizophrenia. Lagged phase synchronization (LPS) was used to measure whole-brain source-based functional connectivity between 84 intra-cortical current sources determined by eLORETA (exact low-resolution brain electromagnetic tomography) for five frequencies. The Conners' Continuous Performance Test-II (CPT-II) was administered for evaluating attentional performance. Linear regression with a non-parametric permutation randomization procedure was used to examine the correlations between the whole-brain functional connectivity and the CPT-II measures. Results: Greater beta-band right hemispheric fusiform gyrus (FG)-lingual gyrus (LG) functional connectivity predicted higher CPT-II variability scores (r = 0.44, p < 0.05, corrected), accounting for 19.5% of variance in the CPT-II VAR score. Greater gamma-band right hemispheric functional connectivity between the cuneus (Cu) and transverse temporal gyrus (TTG) and between Cu and the superior temporal gyrus (STG) predicted higher CPT-II hit reaction time (HRT) scores (both r = 0.50, p < 0.05, corrected), accounting for 24.6% and 25.1% of variance in the CPT-II HRT score, respectively. Greater gamma-band right hemispheric Cu-TTG functional connectivity predicted higher CPT-II HRT standard error (HRTSE) scores (r = 0.54, p < 0.05, corrected), accounting for 28.7% of variance in the CPT-II HRTSE score. Conclusions: Our study indicated that increased right hemispheric resting-state EEG functional connectivity at high frequencies was correlated with poorer focused attention in schizophrenia patients. If replicated, novel approaches to modulate these networks may yield selective, potent interventions for improving attention deficits in schizophrenia.
Collapse
Affiliation(s)
- Ta-Chuan Yeh
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Cathy Chia-Yu Huang
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
| | - Yong-An Chung
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea
| | - Sonya Youngju Park
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Psychology, Seoul National University, Seoul 08826, Republic of Korea
| | - Yen-Yue Lin
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
- Department of Emergency Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 325208, Taiwan
| | - Chin-Chao Ma
- Department of Psychiatry, Tri-Service General Hospital Beitou Branch, National Defense Medical Center, Taipei 112003, Taiwan
| | - Nian-Sheng Tzeng
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Hsin-An Chang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| |
Collapse
|
3
|
Yeh TC, Huang CCY, Chung YA, Park SY, Im JJ, Lin YY, Ma CC, Tzeng NS, Chang HA. Online Left-Hemispheric In-Phase Frontoparietal Theta tACS Modulates Theta-Band EEG Source-Based Large-Scale Functional Network Connectivity in Patients with Schizophrenia: A Randomized, Double-Blind, Sham-Controlled Clinical Trial. Biomedicines 2023; 11:biomedicines11020630. [PMID: 36831167 PMCID: PMC9953127 DOI: 10.3390/biomedicines11020630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
EEG studies indicated that schizophrenia patients had increased resting-state theta-band functional connectivity, which was associated with negative symptoms. We recently published the first study showing that theta (6 Hz) transcranial alternating current stimulation (tACS) over left prefrontal and parietal cortices during a working memory task for accentuating frontoparietal theta-band synchronization (in-phase theta-tACS) reduced negative symptoms in schizophrenia patients. Here, we hypothesized that in-phase theta-tACS can modulate theta-band large-scale networks connectivity in schizophrenia patients. In this randomized, double-blind, sham-controlled trial, patients received twice-daily, 2 mA, 20-min sessions of in-phase theta-tACS for 5 consecutive weekdays (n = 18) or a sham stimulation (n = 18). Resting-state electroencephalography data were collected at baseline, end of stimulation, and at one-week follow-up. Exact low resolution electromagnetic tomography (eLORETA) was used to compute intra-cortical activity. Lagged phase synchronization (LPS) was used to measure whole-brain source-based functional connectivity across 84 cortical regions at theta frequency (5-7 Hz). EEG data from 35 patients were analyzed. We found that in-phase theta-tACS significantly reduced the LPS between the posterior cingulate (PC) and the parahippocampal gyrus (PHG) in the right hemisphere only at the end of stimulation relative to sham (p = 0.0009, corrected). The reduction in right hemispheric PC-PHG LPS was significantly correlated with negative symptom improvement at the end of the stimulation (r = 0.503, p = 0.039). Our findings suggest that in-phase theta-tACS can modulate theta-band large-scale functional connectivity pertaining to negative symptoms. Considering the failure of right hemispheric PC-PHG functional connectivity to predict improvement in negative symptoms at one-week follow-up, future studies should investigate whether it can serve as a surrogate of treatment response to theta-tACS.
Collapse
Affiliation(s)
- Ta-Chuan Yeh
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Cathy Chia-Yu Huang
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
| | - Yong-An Chung
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea
| | - Sonya Youngju Park
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 07345, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Psychology, Seoul National University, Seoul 08826, Republic of Korea
| | - Yen-Yue Lin
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
- Department of Emergency Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 325208, Taiwan
| | - Chin-Chao Ma
- Department of Psychiatry, Tri-Service General Hospital Beitou Branch, National Defense Medical Center, Taipei 112003, Taiwan
| | - Nian-Sheng Tzeng
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
| | - Hsin-An Chang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
- Correspondence: ; Tel.: +886-2-8792-3311 (ext. 17389); Fax: +886-2-8792-7221
| |
Collapse
|
4
|
Yeh TC, Huang CCY, Chung YA, Im JJ, Lin YY, Ma CC, Tzeng NS, Chang HA. High-Frequency Transcranial Random Noise Stimulation Modulates Gamma-Band EEG Source-Based Large-Scale Functional Network Connectivity in Patients with Schizophrenia: A Randomized, Double-Blind, Sham-Controlled Clinical Trial. J Pers Med 2022; 12:jpm12101617. [PMID: 36294755 PMCID: PMC9605300 DOI: 10.3390/jpm12101617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 11/10/2022] Open
Abstract
Schizophrenia is associated with increased resting-state large-scale functional network connectivity in the gamma frequency. High-frequency transcranial random noise stimulation (hf-tRNS) modulates gamma-band endogenous neural oscillations in healthy individuals through the application of low-amplitude electrical noises. Yet, it is unclear if hf-tRNS can modulate gamma-band functional connectivity in patients with schizophrenia. We performed a randomized, double-blind, sham-controlled clinical trial to contrast hf-tRNS (N = 17) and sham stimulation (N = 18) for treating negative symptoms in 35 schizophrenia patients. Short continuous currents without neuromodulatory effects were applied in the sham group to mimic real-stimulation sensations. We used electroencephalography to investigate if a five-day, twice-daily hf-tRNS protocol modulates gamma-band (33-45 Hz) functional network connectivity in schizophrenia. Exact low resolution electromagnetic tomography (eLORETA) was used to compute intra-cortical activity from regions within the default mode network (DMN) and fronto-parietal network (FPN), and functional connectivity was computed using lagged phase synchronization. We found that hf-tRNS reduced gamma-band within-DMN and within-FPN connectivity at the end of stimulation relative to sham stimulation. A trend was obtained between the change in within-FPN functional connectivity from baseline to the end of stimulation and the improvement of negative symptoms at the one-month follow-up (r = -0.49, p = 0.055). Together, our findings suggest that hf-tRNS has potential as a network-level approach to modulate large-scale functional network connectivity pertaining to negative symptoms of schizophrenia.
Collapse
Affiliation(s)
- Ta-Chuan Yeh
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114201, Taiwan
| | - Cathy Chia-Yu Huang
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
| | - Yong-An Chung
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea
| | - Yen-Yue Lin
- Department of Life Sciences, National Central University, Taoyuan 320317, Taiwan
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114202, Taiwan
- Department of Emergency Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 325208, Taiwan
| | - Chin-Chao Ma
- Department of Psychiatry, Tri-Service General Hospital Beitou Branch, National Defense Medical Center, Taipei 112003, Taiwan
| | - Nian-Sheng Tzeng
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114201, Taiwan
| | - Hsin-An Chang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei 114201, Taiwan
- Correspondence: ; Tel.: +011-886-2-8792-3311 (ext. 17389); Fax: +011-886-2-8792-7221
| |
Collapse
|
5
|
Im JJ, Na S, Kang S, Jeong H, Lee ES, Lee TK, Ahn WY, Chung YA, Song IU. A Randomized, Double-Blind, Sham-Controlled Trial of Transcranial Direct Current Stimulation for the Treatment of Persistent Postural-Perceptual Dizziness (PPPD). Front Neurol 2022; 13:868976. [PMID: 35493817 PMCID: PMC9046552 DOI: 10.3389/fneur.2022.868976] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Background Persistent postural-perceptual dizziness (PPPD) is a functional vestibular disorder that causes chronic dizziness interfering with daily activities. Transcranial direct current stimulation (tDCS) has reportedly improved dizziness in patients with phobic postural vertigo in an open-label trial. However, no randomized, double-blind, sham-controlled study has been conducted on its therapeutic efficacy in PPPD. Objective This study was conducted to investigate the efficacy and safety of tDCS as an add-on treatment to pharmacotherapy in patients with PPPD. In addition, functional neuroimaging was used to identify the neural mechanisms underlying the effects of tDCS. Materials and Methods In a randomized, double-blind, sham-controlled trial, 24 patients diagnosed with PPPD were randomized to receive active (2 mA, 20 min) or sham tDCS to the left dorsolateral prefrontal cortex (DLPFC), administered in 15 sessions over 3 weeks. The clinical measures that assess the severity of dizziness, depression, and anxiety were collected at baseline, immediate follow-up, 1-month follow-up, and 3-month follow-up. Adverse events were also observed. The effect of tDCS on regional cerebral blood flow (rCBF) was evaluated with single photon emission tomography before and after tDCS sessions. Results For the primary outcome measure of the Dizziness Handicap Inventory (DHI) score, a significant main effect of time was found, but neither the treatment-by-time interaction effect nor the main effect of treatment was significant. For the Hamilton Depression Rating Scale (HDRS) score, there was a statistical significance for the treatment-by-time interaction effect and the main effect of time, but not for the main effect of treatment. However, the treatment-by-time interaction effect and the main effect of time on HDRS score appear to be due to one data point, an increase in depressive symptoms reported by the sham group at the 3-month follow-up. For the Activities-specific Balance Confidence (ABC) Scale and the Hamilton Anxiety Rating Scale scores, there were no significant main effects of time, treatment, and treatment-by-time interaction. In a comparison with the changes in rCBF between the groups, a significant treatment-by-time interaction effect was found in the right superior temporal and left hippocampus, controlling for age and sex. Conclusion Active tDCS was not found to be significantly more efficacious than sham tDCS on dizziness symptoms in patients with PPPD. It is conceivable that tDCS targeting the DLPFC may not be an optimal treatment option for reducing dizziness symptoms in PPPD. Our findings encourage further investigation on the effects of tDCS in PPPD, which considers different stimulation protocols in terms of stimulation site or the number of sessions. Clinical Trial Registration cris.nih.go.kr, identifier: KCT0005068.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Department of Psychology, Seoul National University, Seoul, South Korea
| | - Seunghee Na
- Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
- *Correspondence: Seunghee Na
| | - Sanghoon Kang
- Department of Psychiatry, Yale University, New Haven, CT, United States
| | - Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Eek-Sung Lee
- Department of Neurology, Soonchunhang University Bucheon Hospital, Bucheon, South Korea
| | - Tae-Kyeong Lee
- Department of Neurology, Soonchunhang University Bucheon Hospital, Bucheon, South Korea
| | - Woo-Young Ahn
- Department of Psychology, Seoul National University, Seoul, South Korea
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| |
Collapse
|
6
|
Jeong H, Song IU, Chung YA, Park JS, Na SH, Im JJ, Bikson M, Lee W, Yoo SS. Short-Term Efficacy of Transcranial Focused Ultrasound to the Hippocampus in Alzheimer’s Disease: A Preliminary Study. J Pers Med 2022; 12:jpm12020250. [PMID: 35207738 PMCID: PMC8878180 DOI: 10.3390/jpm12020250] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 11/17/2022] Open
Abstract
Preclinical studies have suggested that low-intensity transcranial focused ultrasound (tFUS) may have therapeutic potential for Alzheimer’s disease (AD) by opening the blood–brain barrier (BBB), reducing amyloid pathology, and improving cognition. This study investigated the effects of tFUS on BBB opening, regional cerebral metabolic rate of glucose (rCMRglu), and cognitive function in AD patients. Eight patients with AD received image-guided tFUS to the right hippocampus immediately after intravenous injection of microbubble ultrasound contrast agents. Patients completed magnetic resonance imaging (MRI), 18F-fluoro-2-deoxyglucose positron emission tomography (PET), and cognitive assessments before and after the sonication. No evidence of transient BBB opening was found on T1 dynamic contrast-enhanced MRI. However, immediate recall (p = 0.03) and recognition memory (p = 0.02) were significantly improved on the verbal learning test. PET image analysis demonstrated increased rCMRglu in the right hippocampus (p = 0.001). In addition, increases of hippocampal rCMRglu were correlated with improvement in recognition memory (Spearman’s ρ = 0.77, p = 0.02). No adverse event was observed. Our results suggest that tFUS to the hippocampus of AD patients may improve rCMRglu of the target area and memory in the short term, even without BBB opening. Further larger sham-controlled trials with loger follow-up are warranted to evaluate the efficacy and safety of tFUS in patients with AD.
Collapse
Affiliation(s)
- Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (H.J.); (J.J.I.)
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (J.-S.P.); (S.-H.N.)
- Correspondence: (I.-U.S.); (Y.-A.C.); Tel.: +82-32-280-5010 (I.-U.S.); +82-32-280-5242 (Y.-A.C.); Fax: +82-32-280-5244 (I.-U.S. & Y.-A.C.)
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (H.J.); (J.J.I.)
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea
- Correspondence: (I.-U.S.); (Y.-A.C.); Tel.: +82-32-280-5010 (I.-U.S.); +82-32-280-5242 (Y.-A.C.); Fax: +82-32-280-5244 (I.-U.S. & Y.-A.C.)
| | - Jong-Sik Park
- Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (J.-S.P.); (S.-H.N.)
| | - Seung-Hee Na
- Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (J.-S.P.); (S.-H.N.)
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 21431, Korea; (H.J.); (J.J.I.)
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York, New York, NY 10031, USA;
| | - Wonhye Lee
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (W.L.); (S.-S.Y.)
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (W.L.); (S.-S.Y.)
| |
Collapse
|
7
|
Woo J, Kim JE, Im JJ, Lee J, Jeong HS, Park S, Jung SY, An H, Yoon S, Lim SM, Lee S, Ma J, Shin EY, Han YE, Kim B, Lee EH, Feng L, Chun H, Yoon BE, Kang I, Dager SR, Lyoo IK, Lee CJ. Correction: Astrocytic water channel aquaporin-4 modulates brain plasticity in both mice and humans: a potential gliogenetic mechanism underlying language-associated learning. Mol Psychiatry 2021; 26:7853. [PMID: 34305137 DOI: 10.1038/s41380-021-01185-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J Woo
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - J E Kim
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - J J Im
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Division of Functional Food Research, Korea Food Research Institute, Seongnam, Republic of Korea
| | - H S Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Park
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - S- Y Jung
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - H An
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University,145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S M Lim
- Department of Radiology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - S Lee
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Ma
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E Y Shin
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - Y- E Han
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - B Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E H Lee
- Green Cross Laboratories, Yongin, Republic of Korea
| | - L Feng
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H Chun
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - B- E Yoon
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Nanobiomedical Science, Dankook University, Cheonan, Republic of Korea
| | - I Kang
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S R Dager
- Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - I K Lyoo
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea. .,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea. .,Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea.
| | - C J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea. .,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea. .,KU-KIST Graduate School of Converging Science and Technology, Korea University,145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| |
Collapse
|
8
|
Choi EK, Oh JK, Seo YY, Im JJ, Chung YA. Prognostic value of pretreatment F-18 fluorodeoxyglucose PET/CT in colorectal cancer with unresectable metastasis. Nucl Med Commun 2021; 42:639-645. [PMID: 33625189 DOI: 10.1097/mnm.0000000000001384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE The aim of the study was to assess the prognostic value of pretreatment PET/computed tomography (CT) scans in colorectal cancer (CRC) patients with unresectable metastasis. MATERIALS AND METHODS We retrospectively reviewed the pretreatment PET/CT images of 82 CRC patients with unresectable metastasis and their medical records. On PET/CT images, maximum standardized uptake value (SUVmax) of primary tumor, highest SUVmax of metastatic tumors and number of metastatic organs were identified. The patients were further divided into single and multiple organ metastases groups according to the extent of disease. Survival analysis was performed with the clinical variables and metabolic parameters from PET/CT. RESULTS In a total of 82 patients, the age of patients, highest SUVmax of metastatic tumors and number of metastatic organs were independent prognostic factors for overall survival (OS) (all P < 0.05), whereas the SUVmax of primary tumor was not. On multivariate analysis, only the SUVmax of metastatic tumor was a significant prognostic factor in the single organ metastasis group (P = 0.047), whereas the age and highest SUVmax of metastatic tumors were independent prognostic factors in the multiple organ metastases group (all P < 0.05). CONCLUSION The highest SUVmax of metastatic tumors was an independent prognostic factor for OS in CRC patients with unresectable metastasis.
Collapse
Affiliation(s)
- Eun Kyoung Choi
- Department of Radiology, Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Ye Young Seo
- Department of Nuclear Medicine, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Radiology, Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Yong-An Chung
- Department of Radiology, Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea
| |
Collapse
|
9
|
Abstract
BACKGROUND The current lack of effective treatments for Alzheimer's disease (AD) and the rapidly increasing burden of the disease highlight the urgent need to find new treatments. Despite accumulating evidence of the beneficial effects of rasagiline in neurodegenerative diseases such as Parkinson's disease, the effects of rasagiline on the brains of patients with AD have not been elucidated. PURPOSE To examine the effects of rasagiline on regional cerebral flow (rCBF) in patients with AD using single photon emission computed tomography (SPECT). MATERIAL AND METHODS Among 22 patients with AD, 11 patients received adjunctive rasagiline at 1 mg/day in conjunction with acetylcholinesterase inhibitors (AChEI); 11 patients were only treated with AChEI for about 1.6 years. All patients underwent brain technetium-99m hexamethylpropylene amine oxime SPECT scans and clinical assessments at baseline and follow-up visits. Annual percent changes in rCBF were compared between the groups in a voxel-wise manner. RESULTS SPECT analysis revealed that the rasagiline-treated group showed more increased rCBF in the cingulate gyrus, inferior frontal gyrus, putamen, and thalamus compared to the comparison group (P < 0.005). CONCLUSION We demonstrated that adjunctive rasagiline treatment may have beneficial effects on brain perfusion in patients with AD, suggesting potential neuroprotective effects.
Collapse
Affiliation(s)
- In-Uk Song
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeonseok Jeong
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung-Hee Na
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong-An Chung
- Department of Nuclear Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
10
|
Jeong H, Im JJ, Park JS, Na SH, Lee W, Yoo SS, Song IU, Chung YA. A pilot clinical study of low-intensity transcranial focused ultrasound in Alzheimer's disease. Ultrasonography 2021; 40:512-519. [PMID: 33730775 PMCID: PMC8446491 DOI: 10.14366/usg.20138] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/16/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose Increasing attention has been paid to low-intensity transcranial focused ultrasound (tFUS) for its potential therapeutic effects in Alzheimer's disease (AD). While preclinical studies have shown promising therapeutic effects of low-intensity tFUS in AD models, its efficacy and safety remain unclear in humans. In this pilot study, we investigated the effects of low-intensity tFUS on blood-brain barrier opening, the regional cerebral metabolic rate of glucose (rCMRglu), and cognition in patients with AD. Methods After receiving institutional review board approval, four patients with AD received tFUS to the hippocampus immediately after an intravenous injection of a microbubble ultrasound contrast agent. Sonication was delivered at low-intensity, at a pressure level below the threshold for blood-brain barrier opening. Patients underwent brain magnetic resonance imaging, 18F-fluoro-2-deoxyglucose positron emission tomography, and neuropsychological assessments before and after the tFUS procedure. A whole-brain voxel-wise paired t test was conducted to compare rCMRglu before and after tFUS. Results The sonication, as anticipated, did not show evidence of active blood-brain barrier opening on T1 dynamic contrast-enhanced magnetic resonance imaging. rCMRglu in the superior frontal gyrus (P<0.001), middle cingulate gyrus (P<0.001), and fusiform gyrus increased after tFUS (P=0.001). Patients demonstrated mild improvement in measures of memory, executive, and global cognitive function following tFUS. No adverse events were reported. Conclusion These results suggest that hippocampal sonication with low-intensity tFUS may have beneficial effects on cerebral glucose metabolism and cognitive function in patients with AD. Further larger studies are needed to confirm the therapeutic efficacy of tFUS in AD.
Collapse
Affiliation(s)
- Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong-Sik Park
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hee Na
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Wonhye Lee
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| |
Collapse
|
11
|
Im JJ, Na S, Jeong H, Chung YA. A Review of Neuroimaging Studies in Persistent Postural-Perceptual Dizziness (PPPD). Nucl Med Mol Imaging 2021; 55:53-60. [PMID: 33968271 DOI: 10.1007/s13139-020-00675-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/26/2020] [Accepted: 11/17/2020] [Indexed: 11/26/2022] Open
Abstract
Persistent postural-perceptual dizziness (PPPD) is a functional vestibular disease characterized by persistent dizziness, unsteadiness, and/or non-spinning vertigo, and is the most common vestibular syndrome in young adults. A stiffened postural control strategy, shift to reliance on visual over vestibular information, and hypervigilance to the environment have been suggested as possible pathophysiological mechanisms of PPPD. However, the exact mechanisms remain unclear. Recently, neuroimaging studies using magnetic resonance imaging and single photon emission computed tomography have provided pivotal insights into the pathophysiology of PPPD. The aim of this review was to evaluate and summarize the existing data on neuroimaging studies in PPPD. In summary, these studies fairly consistently reported decreased brain structure, function, and connectivity among the areas involved in multisensory vestibular processing and spatial cognition, and increased function and connectivity in the visual processing areas in patients with PPPD. The detected brain changes might reflect maladaptive and compensatory mechanisms including dysfunctional integration of multisensory vestibular information and visual dependence. Notably, various factors including personality traits (i.e., neuroticism), psychiatric comorbidities (i.e., anxiety and depression), and triggering factors (i.e., peripheral vestibular lesions) seem to modulate brain functional activity and connectivity patterns, possibly accounting for some differences across the results. Future studies should carefully control for these confounding effects in order to draw firm conclusions.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seunghee Na
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| |
Collapse
|
12
|
Jeong H, Oh JK, Choi EK, Im JJ, Yoon S, Knotkova H, Bikson M, Song IU, Lee SH, Chung YA. Effects of transcranial direct current stimulation on addictive behavior and brain glucose metabolism in problematic online gamers. J Behav Addict 2020; 9:1011-1021. [PMID: 33361487 PMCID: PMC8969730 DOI: 10.1556/2006.2020.00092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 08/11/2020] [Accepted: 10/30/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND AND AIMS Some online gamers may encounter difficulties in controlling their gaming behavior. Previous studies have demonstrated beneficial effects of transcranial direct current stimulation (tDCS) on various kinds of addiction. This study investigated the effects of tDCS on addictive behavior and regional cerebral metabolic rate of glucose (rCMRglu) in problematic online gamers. METHODS Problematic online gamers were randomized and received 12 sessions of either active (n = 13) or sham tDCS (n = 13) to the dorsolateral prefrontal cortex over 4 weeks (anode F3/cathode F4, 2 mA for 30 min, 3 sessions per week). Participants underwent brain 18F-fluoro-2-deoxyglucose positron emission tomography scans and completed questionnaires including the Internet Addiction Test (IAT), Brief Self-Control Scale (BSCS), and Behavioral Inhibition System/Behavioral Activation System scales (BIS/BAS) at the baseline and 4-week follow-up. RESULTS Significant decreases in time spent on gaming (P = 0.005), BIS (P = 0.03), BAS-fun seeking (P = 0.04), and BAS-reward responsiveness (P = 0.01), and increases in BSCS (P = 0.03) were found in the active tDCS group, while decreases in IAT were shown in both groups (P < 0.001). Group-by-time interaction effects were not significant for these measures. Increases in BSCS scores were correlated with decreases in IAT scores in the active group (β = -0.85, P < 0.001). rCMRglu in the left putamen, pallidum, and insula was increased in the active group compared to the sham group (P for interaction < 0.001). DISCUSSION AND CONCLUSIONS tDCS may be beneficial for problematic online gaming potentially through changes in self-control, motivation, and striatal/insular metabolism. Further larger studies with longer follow-up period are warranted to confirm our findings.
Collapse
Affiliation(s)
- Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jin Kyoung Oh
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Eun Kyoung Choi
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sujung Yoon
- Department of Brain and Cognitive Sciences and Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
| | - Helena Knotkova
- MJHS Institute for Innovation in Palliative Care, New York, NY, USA,Department of Family and Social Medicine, Albert Einstein College of Medicine, The Bronx, NY, USA
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sang Hoon Lee
- Department of Radiology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Corresponding author.
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Corresponding author.
| |
Collapse
|
13
|
Im JJ, Jeong H, Lee E, Lee T, Chung Y, Song I, Na S. Altered regional cerebral blood perfusion in mild cognitive impairment patients with dizziness. Alzheimers Dement 2020. [DOI: 10.1002/alz.042282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jooyeon Jamie Im
- Incheon St. Mary's Hospital, the Catholic University of Korea Incheon Korea
| | - Hyeonseok.s Jeong
- Incheon St. Mary's Hospital, the Catholic University of Korea Incheon Korea
| | - Eek‐Sung Lee
- Soonchunhyang University Bucheon Hospital Bucheon Korea
| | | | - Yong‐An Chung
- Incheon St. Mary's Hospital, the Catholic University of Korea Incheon Korea
| | - In‐Uk Song
- Incheon St. Mary's Hospital, the Catholic University of Korea Incheon Korea
| | - Seunghee Na
- Incheon St. Mary's Hospital, the Catholic University of Korea Incheon Korea
| |
Collapse
|
14
|
Na S, Im JJ, Jeong H, Lee ES, Lee TK, Chung YA, Song IU. Altered Regional Cerebral Blood Perfusion in Mild Cognitive Impairment Patients with Dizziness. Diagnostics (Basel) 2020; 10:diagnostics10100777. [PMID: 33008120 PMCID: PMC7599883 DOI: 10.3390/diagnostics10100777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 11/16/2022] Open
Abstract
Dizziness is a common symptom among the general population, especially in the elderly. Previous studies have reported that dizziness may be associated with various cognitive functions including memory impairment. However, few studies have investigated the neural correlates of dizziness in patients with cognitive impairment. The aim of this study was to examine regional cerebral blood flow (rCBF) in mild cognitive impairment (MCI) patients with or without dizziness using single photon emission computed tomography (SPECT). A total of 50 patients with MCI were recruited. All participants underwent technetium-99m ethyl cysteinate dimer brain SPECT and a neuropsychological battery and completed the Dizziness Handicap Inventory (DHI). Participants were divided into a dizziness group (DHI ≥ 1, n = 18) and a non-dizziness group (DHI = 0, n = 32). Voxel wise differences in rCBF between the groups were estimated. SPECT analysis revealed decreased rCBF in the left superior temporal gyrus, left lateral orbital gyrus, and right middle frontal gyrus in the dizziness group compared with the non-dizziness group (p < 0.005). No significant clusters of increased rCBF were observed in the dizziness group compared with the non-dizziness group. Results of the neuropsychological tests showed a significant difference in Controlled Oral Word Association Test performance between MCI patients with and without dizziness. In conclusion, MCI patients with dizziness showed multifocal frontal and left temporal hypoperfusion compared with patients without dizziness. Our results suggest that hypoperfusion in the frontal and temporal cortices might be reflecting the negative impact of dizziness in MCI patients.
Collapse
Affiliation(s)
- Seunghee Na
- Department of Neurology, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea;
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea; (J.J.I.); (H.J.)
| | - Hyeonseok Jeong
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea; (J.J.I.); (H.J.)
- Department of Radiology, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea
| | - Eek-Sung Lee
- Department of Neurology, Soonchunhyang University College of Medicine, Bucheon 14584, Korea; (E.-S.L.); (T.-K.L.)
| | - Tae-Kyeong Lee
- Department of Neurology, Soonchunhyang University College of Medicine, Bucheon 14584, Korea; (E.-S.L.); (T.-K.L.)
| | - Yong-An Chung
- Department of Nuclear Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea; (J.J.I.); (H.J.)
- Department of Radiology, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea
- Correspondence: (Y.-A.C.); (I.-U.S.); Tel.: +82-32-280-5243 (Y.-A.C.); +82-32-280-5010 (I.-U.S.)
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary’s Hospital, The Catholic University of Korea, Seoul 21431, Korea;
- Correspondence: (Y.-A.C.); (I.-U.S.); Tel.: +82-32-280-5243 (Y.-A.C.); +82-32-280-5010 (I.-U.S.)
| |
Collapse
|
15
|
Kim SK, Jeong H, Im JJ, Lee SH, Chung YA. PET Hypometabolism of the Prefrontal-Cingulate Cortices in Internet Gaming Disorder. Front Psychiatry 2020; 11:566518. [PMID: 33519539 PMCID: PMC7843565 DOI: 10.3389/fpsyt.2020.566518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 12/14/2020] [Indexed: 12/24/2022] Open
Abstract
Recently, excessive and uncontrolled use of online games has been recognized as a public concern. Although previous neuroimaging studies have reported structural and functional brain deficits in Internet gaming disorder (IGD), very few studies have investigated the regional cerebral metabolic rate of glucose (rCMRglu). This study investigated the differences in rCMRglu between individuals with IGD and healthy controls using 18F-fluoro-2-deoxyglucose positron emission tomography (18F-FDG PET). A total of 23 adults with IGD and 23 controls underwent brain 18F-FDG PET scans and completed self-report questionnaires. A whole-brain voxel-wise analysis of rCMRglu was conducted and associations between rCMRglu and severity of IGD were assessed. The IGD group showed higher impulsivity (p = 0.04) and lower self-control (p = 0.002) than the control group. In addition, the IGD group had lower FDG uptake in the left medial orbitofrontal gyrus, left middle cingulate cortex, left superior frontal gyrus, and right anterior cingulate cortex (p < 0.001). A significant negative association was found between the rCMRglu in the right anterior cingulate cortex and the number of fulfilled diagnostic criteria for IGD (β = -0.50, p = 0.02). Our results suggest that IGD may be associated with deficits of glucose metabolism in the prefrontal-cingulate cortices.
Collapse
Affiliation(s)
- Sun Ki Kim
- Department of Radiology, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Hyeonseok Jeong
- Department of Radiology, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea.,Department of Nuclear Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Jooyeon Jamie Im
- Department of Nuclear Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Sang Hoon Lee
- Department of Radiology, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Yong-An Chung
- Department of Radiology, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea.,Department of Nuclear Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| |
Collapse
|
16
|
Abstract
Objective To compare the prognostic values of metabolic parameters from pretreatment PET/CT between limited disease (LD) and extensive disease (ED) small cell lung cancer (SCLC) patients. Methods Data on 118 newly diagnosed SCLC patients (50 LD and 68 ED) who underwent pretreatment positron emission tomography–computed tomography (PET/CT) were reviewed. For PET, metabolic parameters were measured for: (1) primary tumor, maximum standardized uptake value (SUVmax), metabolic tumor volume, and total lesion glycolysis; and (2) all tumor lesions, SUVmax of the hottest tumor, whole body metabolic tumor volume (WBMTV), and whole body total lesion glycolysis (WBTLG). Prognostic values of metabolic parameters and other clinical variables were analyzed to predict overall survival (OS). Results In LD, SUVmax of the primary tumor was an independent prognostic factor for OS. Patients with high SUVmax showed significantly worse OS than those with low SUVmax. In ED, WBMTV and WBTLG were independent prognostic factors for OS. Patients with high WBMTV or WBTLG showed significantly worse OS than those with low WBMTV or WBTLG. Conclusions SUVmax of primary tumor was the only independent prognostic factor for OS in LD SCLC patients. WBMTV and WBTLG were independent prognostic factors in ED SCLC patients.
Collapse
Affiliation(s)
- Eun Kyoung Choi
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Minjae Park
- Department of Radiation Oncology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Jin Kyoung Oh, Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea.
| |
Collapse
|
17
|
Song IU, Na SH, Im JJ, Jeong H, Chung SW, Chung YA. Transcranial Direct Current Stimulation for the Treatment of Parkinson's Disease: Clinical and Regional Cerebral Blood Flow SPECT Outcomes. J Neuroimaging 2019; 30:161-164. [PMID: 31762114 DOI: 10.1111/jon.12681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/22/2019] [Accepted: 11/10/2019] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Over the course of treatment for Parkinson's disease (PD), the clinical effects of dopaminergic medication diminish and side effects emerge. Therefore, searching for new therapeutic alternatives or complementary treatments is required. Transcranial direct current stimulation (tDCS) could potentially complement the current therapeutic armamentarium, but only a few studies have investigated the therapeutic effects of tDCS in PD. The present pilot study aimed to investigate the effects of repeated tDCS treatment on motor symptoms and regional cerebral blood flow (rCBF) in patients with PD using single photon emission computed tomography (SPECT). METHODS Four patients with PD received tDCS to the dorsolateral prefrontal cortex two times per week (anode F3/cathode F4, 2 mA for 30 minutes) over a period of 12 months. Patients underwent brain SPECT scans and clinical motor evaluation at baseline and 12-month follow-up. For SPECT data, voxel-wise changes in rCBF were analyzed. RESULTS There was no significant change of the motor severity scale, but the follow-up SPECT showed significant hyperperfusion in the left superior frontal gyrus medial segment and left superior parietal lobule compared to baseline (P < .001). CONCLUSIONS This study shows that tDCS application may improve rCBF in the frontal and parietal lobes in patients with PD, suggesting beneficial effects of tDCS on brain function. Our results are preliminary and further large-scale studies are needed to confirm our findings.
Collapse
Affiliation(s)
- In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hee Na
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jooyeon Jamie Im
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyeonseok Jeong
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung-Woo Chung
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Nuclear Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| |
Collapse
|
18
|
Lee SH, Im JJ, Oh JK, Choi EK, Yoon S, Bikson M, Song IU, Jeong H, Chung YA. Transcranial Direct Current Stimulation for Online Gamers. J Vis Exp 2019. [PMID: 31762463 DOI: 10.3791/60007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation technique that applies a weak electric current to the scalp to modulate neuronal membrane potentials. Compared to other brain stimulation methods, tDCS is relatively safe, simple, and inexpensive to administer. Since excessive online gaming can negatively affect mental health and daily functioning, developing treatment options for gamers is necessary. Although tDCS over the dorsolateral prefrontal cortex (DLPFC) has demonstrated promising results for various addictions, it has not been tested in gamers. This paper describes a protocol and a feasibility study for applying repeated tDCS over the DLPFC and neuroimaging to examine the underlying neural correlates in gamers. At baseline, individuals who play online games report average weekly hours spent on games, complete questionnaires on addiction symptoms and self-control, and undergo brain 18F-fluoro-2-deoxyglucose positron emission tomography (FDG-PET). The tDCS protocol consists of 12 sessions over the DLPFC for 4 weeks (anode F3/cathode F4, 2 mA for 30 min per session). Then, a follow-up is conducted using the same protocol as the baseline. Individuals who do not play online games receive only baseline FDG-PET scans without tDCS. Changes of clinical characteristics and asymmetry of regional cerebral metabolic rate of glucose (rCMRglu) in the DLPFC are examined in gamers. In addition, asymmetry of rCMRglu is compared between gamers and non-gamers at baseline. In our experiment, 15 gamers received tDCS sessions and completed baseline and follow-up scans. Ten non-gamers underwent FDG-PET scans at the baseline. The tDCS reduced addiction symptoms, time spent on games, and increased self-control. Moreover, abnormal asymmetry of rCMRglu in the DLPFC at baseline was alleviated after tDCS. The current protocol may be useful for assessing treatment efficacy of tDCS and its underlying brain changes in gamers. Further randomized sham-controlled studies are warranted. Moreover, the protocol can be applied to other neurological and psychiatric disorders.
Collapse
Affiliation(s)
- Sang Hoon Lee
- Department of Radiology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Eun Kyoung Choi
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Sujung Yoon
- Department of Brain and Cognitive Sciences, Ewha Womans University
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Hyeonseok Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea;
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea;
| |
Collapse
|
19
|
Im JJ, Jeong H, Chung YA, Park JS, Heo Y, Oh JK, Song IU. Neuroprotective Effects of Rasagiline in Parkinson's Disease: A Regional Cerebral Blood Flow Study. J Neuroimaging 2019; 29:707-711. [PMID: 31463990 DOI: 10.1111/jon.12661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/14/2019] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Despite accumulating evidence for the clinical efficacy and neuroprotective properties of rasagiline in Parkinson's disease (PD), effects of rasagiline on brain perfusion in PD patients have not been elucidated. The present study aimed to investigate the effects of rasagiline on regional cerebral blood flow (rCBF) in patients with PD using single-photon emission computed tomography (SPECT). METHODS A total of 44 PD patients were recruited and treated with dopamine agonist, either alone or in combination with levodopa. Twenty-two of these patients (referred to as the rasagiline group) additionally received rasagiline (1 mg/day). All patients underwent brain SPECT scans and clinical assessments at baseline and follow-up visits. The mean follow-up period was 2.2 years. Changes in rCBF were compared between the rasagiline group and the comparison group in a voxel-wise manner. RESULTS Annual change in Unified Parkinson's Disease Rating Scale motor score was lower in the rasagiline group compared to the comparison group (P = .01). A significant group-by-time interaction effect on rCBF was found in the right precuneus (P = .001), where rCBF was decreased in the comparison group and remained stable in the rasagiline group. CONCLUSIONS Our results show that adjunctive rasagiline treatment had beneficial effects on perfusion in the precuneus of PD patients, suggesting potential neuroprotective effects.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyeonseok Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong-Sik Park
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Youngje Heo
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| |
Collapse
|
20
|
Im JJ, Jeong H, Bikson M, Woods AJ, Unal G, Oh JK, Na S, Park JS, Knotkova H, Song IU, Chung YA. Effects of 6-month at-home transcranial direct current stimulation on cognition and cerebral glucose metabolism in Alzheimer's disease. Brain Stimul 2019; 12:1222-1228. [PMID: 31196835 DOI: 10.1016/j.brs.2019.06.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/09/2019] [Accepted: 06/01/2019] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Although single or multiple sessions of transcranial direct current stimulation (tDCS) on the prefrontal cortex over a few weeks improved cognition in patients with Alzheimer's disease (AD), effects of repeated tDCS over longer period and underlying neural correlates remain to be elucidated. OBJECTIVE This study investigated changes in cognitive performances and regional cerebral metabolic rate for glucose (rCMRglc) after administration of prefrontal tDCS over 6 months in early AD patients. METHODS Patients with early AD were randomized to receive either active (n = 11) or sham tDCS (n = 7) over the dorsolateral prefrontal cortex (DLPFC) at home every day for 6 months (anode F3/cathode F4, 2 mA for 30 min). All patients underwent neuropsychological tests and brain 18F-fluoro-2-deoxyglucose positron emission tomography (FDG-PET) scans at baseline and 6-month follow-up. Changes in cognitive performances and rCMRglc were compared between the two groups. RESULTS Compared to sham tDCS, active tDCS improved global cognition measured with Mini-Mental State Examination (p for interaction = 0.02) and language function assessed by Boston Naming Test (p for interaction = 0.04), but not delayed recall performance. In addition, active tDCS prevented decreases in executive function at a marginal level (p for interaction < 0.10). rCMRglc in the left middle/inferior temporal gyrus was preserved in the active group, but decreased in the sham group (p for interaction < 0.001). CONCLUSIONS Daily tDCS over the DLPFC for 6 months may improve or stabilize cognition and rCMRglc in AD patients, suggesting the therapeutic potential of repeated at-home tDCS.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyeonseok Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Adam J Woods
- Center for Cognitive Aging and Memory, McKnight Brain Institute, Department of Clinical and Health Psychology, University of Florida, FL, USA
| | - Gozde Unal
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seunghee Na
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jong-Sik Park
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Helena Knotkova
- MJHS Institute for Innovation in Palliative Care, New York, NY, USA; Department of Family and Social Medicine, Albert Einstein College of Medicine, The Bronx, NY, USA
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
| |
Collapse
|
21
|
Yoo ID, Im JJ, Chung YA, Choi EK, Oh JK, Lee SH. Prediction of postoperative lung function in lung cancer patients using perfusion scintigraphy. Acta Radiol 2019; 60:488-495. [PMID: 30056737 DOI: 10.1177/0284185118787355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Predicting postoperative lung function is critical in lung cancer patients. Perfusion scintigraphy has been used to estimate postoperative function after lung resection. PURPOSE To evaluate the usefulness of the posterior oblique method in relation to other conventional processing methods for predicting postoperative lung function using lung perfusion scintigraphy. MATERIAL AND METHODS Fifty-five patients with non-small-cell lung cancer who underwent lobectomy were enrolled. Forced expiratory volume in 1 s (FEV1) values were obtained from preoperative and postoperative pulmonary function tests. After performing lung perfusion scintigraphy, predicted FEV1 values were calculated using the segment, conventional, posterior, and posterior oblique methods. Postoperative FEV1 values were compared with predicted FEV1 values. RESULTS The mean value of the preoperative FEV1 was 2.29 L and that of the postoperative FEV1 was 1.89 L. The mean values of the predicted postoperative FEV1 values for the segment, conventional, posterior, and posterior oblique were 1.83 L, 1.94 L, 1.88 L, and 1.89 L, respectively. Between the observed and predicted FEV1 values, there was a strong correlation without significant difference except for conventional method. Bland-Altman analysis showed that segment and posterior methods underestimated the FEV1, whereas conventional and posterior oblique methods overestimated the FEV1. CONCLUSION Predictions with each processing method of lung perfusion scintigraphy showed nearly similar results to the actual postoperative lung function. The posterior oblique method of lung perfusion scintigraphy showed a very small difference to such an extent as to be equal to the observed FEV1, implying that this method may be applied for predicting postoperative lung function in lung cancer patients.
Collapse
Affiliation(s)
- Ik Dong Yoo
- Department of Nuclear Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Jooyeon Jamie Im
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong-An Chung
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Kyung Choi
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Kyung Oh
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Hoon Lee
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
22
|
Park J, Im JJ, Song IU, Kang Y. A Comparison of Memory Beliefs, Cognitive Activity, and Depression Among Healthy Older Adults, Amnestic Mild Cognitive Impairment, and Patient with Alzheimer's Disease. Ann Geriatr Med Res 2019; 23:16-19. [PMID: 32743280 PMCID: PMC7387599 DOI: 10.4235/agmr.18.0051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/18/2019] [Accepted: 02/25/2019] [Indexed: 11/24/2022] Open
Abstract
Background Amnestic mild cognitive impairment (aMCI) is highly likely to progress to dementia of the Alzheimer type (DAT). One of the most frequently reported symptoms in aMCI and DAT patients is memory impairment. This study compared the levels of beliefs about memory efficacy and control, cognitive activity, and depression among healthy older adults (OA), patients with aMCI, and patients with DAT. Methods This study included 21 OA (11 males, 10 females), 16 aMCI patients (6 males, 10 females), and 18 DAT patients (10 males, 8 females). The memory efficacy questionnaire, memory control questionnaire, cognitive activity questionnaire, depression questionnaire, and Seoul Verbal Learning Test were administered to all subjects. Results DAT patients showed significantly lower scores on the recognition test than did the OA and aMCI patients, and no difference in these scores was observed between the OA and aMCI patients. Regarding the memory efficacy, memory control, and cognitive activity questionnaires, DAT and aMCI patients showed significantly lower scores than did OA. However, there were no differences in these scores between aMCI and DAT patients. Conclusion The results of this study suggest that aMCI patients experienced impairment in memory beliefs and memory control in the same way as DAT patients did. These results suggest that the early application of cognitive rehabilitation therapy for patients with aMCI may be effective in preventing or alleviating memory deterioration.
Collapse
Affiliation(s)
- JongSik Park
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Yeonwook Kang
- Depratment of Psychology, Hallym University, Chuncheon, Korea.,Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Korea
| |
Collapse
|
23
|
Na S, Im JJ, Jeong H, Lee ES, Lee TK, Chung YA, Song IU. Correction to: Cerebral perfusion abnormalities in patients with persistent postural-perceptual dizziness (PPPD): a SPECT study. J Neural Transm (Vienna) 2019; 126:697. [PMID: 30730006 DOI: 10.1007/s00702-019-01977-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The authors inadvertently forgot to provide the following funding information in the original publication: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT (2018R1A6A3A11041118).
Collapse
Affiliation(s)
- Seunghee Na
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jooyeon Jamie Im
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyeonseok Jeong
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Eek-Sung Lee
- Department of Neurology, Soonchunhyang University College of Medicine, Bucheon, South Korea
| | - Tae-Kyeong Lee
- Department of Neurology, Soonchunhyang University College of Medicine, Bucheon, South Korea
| | - Yong-An Chung
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
| | - In-Uk Song
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
| |
Collapse
|
24
|
Lee SH, Im JJ, Oh JK, Choi EK, Yoon S, Bikson M, Song IU, Jeong H, Chung YA. Transcranial direct current stimulation for online gamers: A prospective single-arm feasibility study. J Behav Addict 2018; 7:1166-1170. [PMID: 30418077 PMCID: PMC6376367 DOI: 10.1556/2006.7.2018.107] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
AIM Excessive use of online games can have negative influences on mental health and daily functioning. Although the effects of transcranial direct current stimulation (tDCS) have been investigated for the treatment of addiction, it has not been evaluated for excessive online game use. This study aimed to investigate the feasibility and tolerability of tDCS over the dorsolateral prefrontal cortex (DLPFC) in online gamers. METHODS A total of 15 online gamers received 12 active tDCS sessions over the DLPFC (anodal left/cathodal right, 2 mA for 30 min, 3 times per week for 4 weeks). Before and after tDCS sessions, all participants underwent 18F-fluoro-2-deoxyglucose positron emission tomography scans and completed the Internet Addiction Test (IAT), Brief Self Control Scale (BSCS), and Beck Depression Inventory-II (BDI-II). RESULTS After tDCS sessions, weekly hours spent on games (p = .02) and scores of IAT (p < .001) and BDI-II (p = .01) were decreased, whereas BSCS score was increased (p = .01). Increases in self-control were associated with decreases in both addiction severity (p = .002) and time spent on games (p = .02). Moreover, abnormal right-greater-than-left asymmetry of regional cerebral glucose metabolism in the DLPFC was partially alleviated (p = .04). CONCLUSIONS Our preliminary results suggest that tDCS may be useful for reducing online game use by improving interhemispheric balance of glucose metabolism in the DLPFC and enhancing self-control. Larger sham-controlled studies with longer follow-up period are warranted to validate the efficacy of tDCS in gamers.
Collapse
Affiliation(s)
- Sang Hoon Lee
- Department of Radiology, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jooyeon Jamie Im
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jin Kyoung Oh
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Eun Kyoung Choi
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sujung Yoon
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Marom Bikson
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - In-Uk Song
- Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyeonseok Jeong
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Corresponding authors: Yong-An Chung, MD, PhD; Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 56 Dongsu-ro, Bupyeong-gu, Seoul, 21431, South Korea; Phone: +82 32 280 5243; Fax: +82 32 280 5244; E-mail: ; Hyeonseok Jeong, PhD; Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 56 Dongsu-ro, Bupyeong-gu, Seoul, 21431, South Korea; Phone: +82 32 280 5254; Fax: +82 32 280 5244; E-mail:
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea,Corresponding authors: Yong-An Chung, MD, PhD; Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 56 Dongsu-ro, Bupyeong-gu, Seoul, 21431, South Korea; Phone: +82 32 280 5243; Fax: +82 32 280 5244; E-mail: ; Hyeonseok Jeong, PhD; Department of Radiology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 56 Dongsu-ro, Bupyeong-gu, Seoul, 21431, South Korea; Phone: +82 32 280 5254; Fax: +82 32 280 5244; E-mail:
| |
Collapse
|
25
|
Choi EK, Im JJ, Park CS, Chung YA, Kim K, Oh JK. Usefulness of feature analysis of breast-specific gamma imaging for predicting malignancy. Eur Radiol 2018; 28:5195-5202. [DOI: 10.1007/s00330-018-5563-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 04/30/2018] [Accepted: 05/24/2018] [Indexed: 10/14/2022]
|
26
|
Woo J, Kim JE, Im JJ, Lee J, Jeong HS, Park S, Jung SY, An H, Yoon S, Lim SM, Lee S, Ma J, Shin EY, Han YE, Kim B, Lee EH, Feng L, Chun H, Yoon BE, Kang I, Dager SR, Lyoo IK, Lee CJ. Astrocytic water channel aquaporin-4 modulates brain plasticity in both mice and humans: a potential gliogenetic mechanism underlying language-associated learning. Mol Psychiatry 2018; 23:1021-1030. [PMID: 29565042 DOI: 10.1038/mp.2017.113] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 03/21/2017] [Accepted: 04/17/2017] [Indexed: 01/04/2023]
Abstract
The role of astrocytes in brain plasticity has not been extensively studied compared with that of neurons. Here we adopted integrative translational and reverse-translational approaches to explore the role of an astrocyte-specific major water channel in the brain, aquaporin-4 (AQP4), in brain plasticity and learning. We initially identified the most prevalent genetic variant of AQP4 (single nucleotide polymorphism of rs162008 with C or T variation, which has a minor allele frequency of 0.21) from a human database (n=60 706) and examined its functionality in modulating the expression level of AQP4 in an in vitro luciferase reporter assay. In the following experiments, AQP4 knock-down in mice not only impaired hippocampal volumetric plasticity after exposure to enriched environment but also caused loss of long-term potentiation after theta-burst stimulation. In humans, there was a cross-sectional association of rs162008 with gray matter (GM) volume variation in cortices, including the vicinity of the Perisylvian heteromodal language area (Sample 1, n=650). GM volume variation in these brain regions was positively associated with the semantic verbal fluency. In a prospective follow-up study (Sample 2, n=45), the effects of an intensive 5-week foreign language (English) learning experience on regional GM volume increase were modulated by this AQP4 variant, which was also associated with verbal learning capacity change. We then delineated in mice mechanisms that included AQP4-dependent transient astrocytic volume changes and astrocytic structural elaboration. We believe our study provides the first integrative evidence for a gliogenetic basis that involves AQP4, underlying language-associated brain plasticity.
Collapse
Affiliation(s)
- J Woo
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - J E Kim
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - J J Im
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H S Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Park
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - S-Y Jung
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - H An
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - S Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S M Lim
- Department of Radiology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - S Lee
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Ma
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E Y Shin
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - Y-E Han
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - B Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E H Lee
- Green Cross Laboratories, Yongin, Republic of Korea
| | - L Feng
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H Chun
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - B-E Yoon
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Nanobiomedical Science, Dankook University, Cheonan, Republic of Korea
| | - I Kang
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S R Dager
- Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - I K Lyoo
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - C J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea.,KU-KIST, Graduate School of Convergence Technology, Korea University, Seoul, Republic of Korea
| |
Collapse
|
27
|
Im JJ, Kim B, Hwang J, Kim JE, Kim JY, Rhie SJ, Namgung E, Kang I, Moon S, Lyoo IK, Park CH, Yoon S. Diagnostic potential of multimodal neuroimaging in posttraumatic stress disorder. PLoS One 2017; 12:e0177847. [PMID: 28558004 PMCID: PMC5448741 DOI: 10.1371/journal.pone.0177847] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 05/04/2017] [Indexed: 11/23/2022] Open
Abstract
Despite accumulating evidence of physiological abnormalities related to posttraumatic stress disorder (PTSD), the current diagnostic criteria for PTSD still rely on clinical interviews. In this study, we investigated the diagnostic potential of multimodal neuroimaging for identifying posttraumatic symptom trajectory after trauma exposure. Thirty trauma-exposed individuals and 29 trauma-unexposed healthy individuals were followed up over a 5-year period. Three waves of assessments using multimodal neuroimaging, including structural magnetic resonance imaging (MRI) and diffusion-weighted MRI, were performed. Based on previous findings that the structural features of the fear circuitry-related brain regions may dynamically change during recovery from the trauma, we employed a machine learning approach to determine whether local, connectivity, and network features of brain regions of the fear circuitry including the amygdala, orbitofrontal and ventromedial prefrontal cortex (OMPFC), hippocampus, insula, and thalamus could distinguish trauma-exposed individuals from trauma-unexposed individuals at each recovery stage. Significant improvement in PTSD symptoms was observed in 23%, 52%, and 88% of trauma-exposed individuals at 1.43, 2.68, and 3.91 years after the trauma, respectively. The structural features of the amygdala were found as major classifiers for discriminating trauma-exposed individuals from trauma-unexposed individuals at 1.43 years after the trauma, but these features were nearly normalized at later phases when most of the trauma-exposed individuals showed clinical improvement in PTSD symptoms. Additionally, the structural features of the OMPFC showed consistent predictive values throughout the recovery period. In conclusion, the current study provides a promising step forward in the development of a clinically applicable predictive model for diagnosing PTSD and predicting recovery from PTSD.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Interdisciplinary Program in Neurosciences, College of Natural Sciences, Seoul National University, Seoul, South Korea
| | - Binna Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Interdisciplinary Program in Neurosciences, College of Natural Sciences, Seoul National University, Seoul, South Korea
| | - Jaeuk Hwang
- Department of Psychiatry, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - Jieun E. Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Jung Yoon Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Sandy Jeong Rhie
- College of Pharmacy and Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
| | - Eun Namgung
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Ilhyang Kang
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Sohyeon Moon
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
| | - In Kyoon Lyoo
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
| | - Chang-hyun Park
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- * E-mail: (CP); (SY)
| | - Sujung Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
- * E-mail: (CP); (SY)
| |
Collapse
|
28
|
Kim B, Hong VM, Yang J, Hyun H, Im JJ, Hwang J, Yoon S, Kim JE. A Review of Fermented Foods with Beneficial Effects on Brain and Cognitive Function. Prev Nutr Food Sci 2016; 21:297-309. [PMID: 28078251 PMCID: PMC5216880 DOI: 10.3746/pnf.2016.21.4.297] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/13/2016] [Indexed: 12/26/2022] Open
Abstract
Around the world, fermentation of foods has been adopted over many generations, primarily due to their commercial significance with enriched flavors and high-profile nutrients. The increasing application of fermented foods is further promoted by recent evidence on their health benefits, beyond the traditionally recognized effects on the digestive system. With recent advances in the understanding of gut-brain interactions, there have also been reports suggesting the fermented food's efficacy, particularly for cognitive function improvements. These results are strengthened by the proposed biological effects of fermented foods, including neuroprotection against neurotoxicity and reactive oxygen species. This paper reviews the beneficial health effects of fermented foods with particular emphasis on cognitive enhancement and neuroprotective effects. With an extensive review of fermented foods and their potential cognitive benefits, this paper may promote commercially feasible applications of fermented foods as natural remedies to cognitive problems.
Collapse
Affiliation(s)
- Binna Kim
- Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea
| | - Veronica Minsu Hong
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Jeongwon Yang
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Heejung Hyun
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Jooyeon Jamie Im
- Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea
| | - Jaeuk Hwang
- Department of Psychiatry, Soon Chun Hyang University Hospital, Seoul 04401, Korea
| | - Sujung Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Jieun E Kim
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| |
Collapse
|
29
|
Im JJ, Namgung E, Choi Y, Kim JY, Rhie SJ, Yoon S. Molecular Neuroimaging in Posttraumatic Stress Disorder. Exp Neurobiol 2016; 25:277-295. [PMID: 28035179 PMCID: PMC5195814 DOI: 10.5607/en.2016.25.6.277] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/11/2016] [Accepted: 11/14/2016] [Indexed: 01/10/2023] Open
Abstract
Over the past decade, an increasing number of neuroimaging studies have provided insight into the neurobiological mechanisms of posttraumatic stress disorder (PSTD). In particular, molecular neuroimaging techniques have been employed in examining metabolic and neurochemical processes in PTSD. This article reviews molecular neuroimaging studies in PTSD and focuses on findings using three imaging modalities including positron emission tomography (PET), single photon emission computed tomography (SPECT), and magnetic resonance spectroscopy (MRS). Although there were some inconsistences in the findings, patients with PTSD showed altered cerebral metabolism and perfusion, receptor bindings, and metabolite profiles in the limbic regions, medial prefrontal cortex, and temporal cortex. Studies that have investigated brain correlates of treatment response are also reviewed. Lastly, the limitations of the molecular neuroimaging studies and potential future research directions are discussed.
Collapse
Affiliation(s)
- Jooyeon Jamie Im
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Eun Namgung
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Yejee Choi
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Jung Yoon Kim
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Sandy Jeong Rhie
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; College of Pharmacy and Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Sujung Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul 03760, Korea.; Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| |
Collapse
|
30
|
Yoon S, Kim JE, Kim GH, Kang HJ, Kim BR, Jeon S, Im JJ, Hyun H, Moon S, Lim SM, Lyoo IK. Subregional Shape Alterations in the Amygdala in Patients with Panic Disorder. PLoS One 2016; 11:e0157856. [PMID: 27336300 PMCID: PMC4919046 DOI: 10.1371/journal.pone.0157856] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/06/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The amygdala has been known to play a pivotal role in mediating fear-related responses including panic attacks. Given the functionally distinct role of the amygdalar subregions, morphometric measurements of the amygdala may point to the pathophysiological mechanisms underlying panic disorder. The current study aimed to determine the global and local morphometric alterations of the amygdala related to panic disorder. METHODS Volumetric and surface-based morphometric approach to high-resolution three-dimensional T1-weighted images was used to examine the structural variations of the amygdala, with respect to extent and location, in 23 patients with panic disorder and 31 matched healthy individuals. RESULTS There were no significant differences in bilateral amygdalar volumes between patients with panic disorder and healthy individuals despite a trend-level right amygdalar volume reduction related to panic disorder (right, β = -0.23, p = 0.09, Cohen's d = 0.51; left, β = -0.18, p = 0.19, Cohen's d = 0.45). Amygdalar subregions were localized into three groups including the superficial, centromedial, and laterobasal groups based on the cytoarchitectonically defined probability map. Surface-based morphometric analysis revealed shape alterations in the laterobasal and centromedial groups of the right amygdala in patients with panic disorder (false discovery rate corrected p < 0.05). CONCLUSIONS The current findings suggest that subregion-specific shape alterations in the right amygdala may be involved in the development and maintenance of panic disorder, which may be attributed to the cause or effects of amygdalar hyperactivation.
Collapse
Affiliation(s)
- Sujung Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Jieun E. Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Geon Ha Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, South Korea
| | - Hee Jin Kang
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Bori R. Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Saerom Jeon
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Jooyeon Jamie Im
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, South Korea
| | - Heejung Hyun
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
| | - Sohyeon Moon
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
| | - Soo Mee Lim
- Department of Radiology, Ewha Womans University College of Medicine, Seoul, South Korea
| | - In Kyoon Lyoo
- Ewha Brain Institute, Ewha Womans University, Seoul, South Korea
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul, South Korea
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, South Korea
- * E-mail:
| |
Collapse
|
31
|
Jeong HS, Kang I, Namgung E, Im JJ, Jeon Y, Son J, Yu S, Kim S, Yoon S, Lyoo IK, Chung YA, Lim JH, Kim JE. Validation of the Korean version of the Connor-Davidson Resilience Scale-2 in firefighters and rescue workers. Compr Psychiatry 2015; 59:123-8. [PMID: 25744698 DOI: 10.1016/j.comppsych.2015.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 01/19/2015] [Accepted: 01/29/2015] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVE Resilience has been considered as a protective factor against stress. Evaluating resilience in firefighters and rescue workers, who are frequently exposed to traumatic events, is important and relevant. This study examined the psychometric properties of the Korean version of the Connor-Davidson Resilience Scale-2 (CD-RISC2). METHODS Two-hundred twenty-two current professional firefighters and rescue workers were assessed by standardized, semi-structured clinical interviews and self-report questionnaires. Internal consistency, correlation with the CD-RISC, convergent validity, divergent validity, and predictive validity of posttraumatic stress disorder (PTSD) symptom severity were analyzed. RESULTS The CD-RISC2 demonstrated good internal consistency (α=0.75), item-total correlation (r=0.89-0.90), and convergent and divergent validity. The total score of the CD-RISC2 showed significant correlations with the subtotal of the remaining 23 CD-RISC items (r=0.77, p<0.001) and with the score of each CD-RISC item (r=0.15-0.66, all p<0.05). The magnitude of the relationship between the number of traumatic experiences and PTSD symptom severity was greater in the low resilience group than in the high resilience group (p for interaction=0.002). The likelihood-ratio test confirmed that the model predicting PTSD symptom severity based on the CD-RISC2 total score was not improved by the inclusion of subtotal scores of the remaining 23 CD-RISC items (χ(2)=0.31, p=0.58). CONCLUSIONS These results suggest that the CD-RISC2 would be a valuable tool in evaluating resilience quickly and efficiently in firefighters and rescue workers.
Collapse
Affiliation(s)
- Hyeonseok S Jeong
- Department of Radiology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Ilhyang Kang
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Department of Brain and Cognitive Sciences, Ewha W. University, Seoul, South Korea
| | - Eun Namgung
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Department of Brain and Cognitive Sciences, Ewha W. University, Seoul, South Korea
| | - Jooyeon Jamie Im
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, South Korea
| | - Yujin Jeon
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Graduate School of Pharmaceutical Sciences, Ewha W. University, Seoul, South Korea
| | - Jihee Son
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Graduate School of Pharmaceutical Sciences, Ewha W. University, Seoul, South Korea
| | - Siyoung Yu
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Department of Brain and Cognitive Sciences, Ewha W. University, Seoul, South Korea
| | - Sungeun Kim
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Department of Brain and Cognitive Sciences, Ewha W. University, Seoul, South Korea
| | - Sujung Yoon
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea
| | - In Kyoon Lyoo
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Graduate School of Pharmaceutical Sciences, Ewha W. University, Seoul, South Korea
| | - Yong-An Chung
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jae-Ho Lim
- Central Officials Training Institute, Gwacheon, Gyeonggi-do, South Korea
| | - Jieun E Kim
- Ewha Brain Institute, Ewha W. University, Seoul, South Korea; Department of Brain and Cognitive Sciences, Ewha W. University, Seoul, South Korea.
| |
Collapse
|
32
|
Jeong HS, Jeon Y, Ma J, Choi Y, Ban S, Lee S, Lee B, Im JJ, Yoon S, Kim JE, Lim JH, Lyoo IK. Validation of the Athens Insomnia Scale for screening insomnia in South Korean firefighters and rescue workers. Qual Life Res 2015; 24:2391-5. [DOI: 10.1007/s11136-015-0986-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
|
33
|
Abstract
This study was aimed to examine the mental health status of immigrant women through international marriages and its effects on emotional and behavioral problems of children. Seventy-four intermarried immigrant women and 86 native Korean women were enrolled from the same district of Seoul metropolitan area. The mental health problems of study participants and their children were examined. Increased risks of having a higher level of anxiety were observed in immigrant women compared to native Korean women. Children of the immigrant group were likely to have more internalizing and externalizing behavioral symptoms than those of the native group. This pattern was more apparent in children of mothers with higher levels of anxiety. The present study found a higher risk for mild anxiety in intermarried immigrants than in native Korean women. Furthermore, considering that immigrant children seemed to have more emotional and behavioral problems relative to native children if their mothers have higher levels of anxiety, special attention should be paid to prevention and early intervention for mental health problems of intermarried immigrant women.
Collapse
Affiliation(s)
- Sun Hea Lee
- Clinical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | | | | | | | | |
Collapse
|
34
|
Jeong HS, Lee S, Yoon S, Jung JJ, Cho HB, Kim BN, Ma J, Ko E, Im JJ, Ban S, Renshaw PF, Lyoo IK. Morphometric abnormalities of the lateral ventricles in methamphetamine-dependent subjects. Drug Alcohol Depend 2013; 131:222-9. [PMID: 23769159 PMCID: PMC5510466 DOI: 10.1016/j.drugalcdep.2013.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Revised: 04/12/2013] [Accepted: 05/06/2013] [Indexed: 01/13/2023]
Abstract
BACKGROUND The presence of morphometric abnormalities of the lateral ventricles, which can reflect focal or diffuse atrophic changes of nearby brain structures, is not well characterized in methamphetamine dependence. The current study was aimed to examine the size and shape alterations of the lateral ventricles in methamphetamine-dependent subjects. METHODS High-resolution brain structural images were obtained from 37 methamphetamine-dependent subjects and 25 demographically matched healthy individuals. Using a combined volumetric and surface-based morphometric approach, the structural variability of the lateral ventricles, with respect to extent and location, was examined. RESULTS Methamphetamine-dependent subjects had an enlarged right lateral ventricle compared with healthy individuals. Morphometric analysis revealed a region-specific pattern of lateral ventricular expansion associated with methamphetamine dependence, which was mainly distributed in the areas adjacent to the ventral striatum, medial prefrontal cortex, and thalamus. CONCLUSIONS Patterns of shape decomposition in the lateral ventricles may have relevance to the structural vulnerability of the prefrontal-ventral striatal-thalamic circuit to methamphetamine-induced neurotoxicity.
Collapse
Affiliation(s)
- Hyeonseok S. Jeong
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Sunho Lee
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Sujung Yoon
- Department of Psychiatry, Catholic University of Korea School of Medicine, 505 Banpo-dong, Seocho-gu, Seoul 137–701, South Korea,The Brain Institute and Department of Psychiatry, University of Utah, 383 Colorow Dr, Salt Lake City, UT 84108, USA
| | - Jiyoung J. Jung
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Han Byul Cho
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Binna N. Kim
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Jiyoung Ma
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Eun Ko
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Jooyeon Jamie Im
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Sciences, 103 Daehak-ro, Jongno-gu, Seoul 110–799, South Korea
| | - Soonhyun Ban
- Department of Brain and Cognitive Sciences, Ewha University Graduate School, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120–750, South Korea
| | - Perry F. Renshaw
- The Brain Institute and Department of Psychiatry, University of Utah, 383 Colorow Dr, Salt Lake City, UT 84108, USA
| | - In Kyoon Lyoo
- Ewha Brain Institute & College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha W. University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120–750, South Korea,Corresponding author. Tel.: +82 2 3277 3045; fax: +82 2 3277 3044. (I.K. Lyoo)
| |
Collapse
|
35
|
Kim NG, Yoo CK, Im JJ. A new rehabilitation training system for postural balance control using virtual reality technology. IEEE Trans Rehabil Eng 1999; 7:482-5. [PMID: 10609636 DOI: 10.1109/86.808952] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new rehabilitation training system, designated as a virtual cycling system, was developed to improve postural balance control by combining virtual reality (VR) technology with a bicycle. Several parameters including path deviation, path deviation velocity, cycling time, and head movement were extracted and evaluated to quantify the extent of control. The system was effective as a training device and, in addition, the technology might have a wider applicability to the rehabilitation field.
Collapse
Affiliation(s)
- N G Kim
- Department of Bionics, College of Engineering, Chonbuk National University, Chonju, Korea
| | | | | |
Collapse
|