Research Topics
Species | In Kyoon LyooSummaryAffiliation: Harvard University Country: USA Publications
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Publications
Multinuclear magnetic resonance spectroscopy of high-energy phosphate metabolites in human brain following oral supplementation of creatine-monohydrateIn Kyoon Lyoo
Brain Imaging Center, McLean Hospital, 115 Mill Street, Belmont, MA 02478, USA
Psychiatry Res 123:87-100. 2003....
In vivo proton magnetic resonance spectroscopy of the temporal lobe in Alzheimer's diseaseBlaise D Frederick
McLean Hospital Brain Imaging Center, Belmont, MA, USA
Prog Neuropsychopharmacol Biol Psychiatry 28:1313-22. 2004..This change was not observed in patients whose memory loss and other cognitive declines were not attributed to Alzheimer's disease, suggesting that it may aid in the diagnosis or detection of Alzheimer's disease...
Prefrontal and temporal gray matter density decreases in opiate dependenceIn Kyoon Lyoo
McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, Belmont, MA, USA
Psychopharmacology (Berl) 184:139-44. 2006..There have been only a few structural brain-imaging studies, with varied findings, of opiate-dependent subjects. Voxel-based morphometry (VBM) is suitable for studying whole brain-wise structural brain changes in opiate-dependent subjects...
White matter hyperintensities in subjects with bipolar disorderKyung Heup Ahn
Mclean Brain Imaging Center and Harvard Medical School, Belmont, MA, USA
Psychiatry Clin Neurosci 58:516-21. 2004..Differences of small-sized WMH abnormalities between groups were successfully detected using a large number of bipolar subjects and thinner sliced MR images with FLAIR...
Triacetyluridine (TAU) decreases depressive symptoms and increases brain pH in bipolar patientsJ Eric Jensen
Brain Imaging Center, McLean Hospital, Belmont, Massachusetts 02478 9106, USA
Exp Clin Psychopharmacol 16:199-206. 2008..These results suggest that TAU treatment may decrease symptoms of depression and improve mitochondrial functioning...
Frontal lobe gray matter density decreases in bipolar I disorderIn Kyoon Lyoo
Brain Imaging Center, McLean Hospital, Belmont, Massachusetts 02478, USA
Biol Psychiatry 55:648-51. 2004..Decreased gray matter density in the right inferior frontal gyrus, which processes nonverbal and intrinsic functions, supports nondominant hemisphere dysfunction as a component of bipolar disorder...
Oral choline decreases brain purine levels in lithium-treated subjects with rapid-cycling bipolar disorder: a double-blind trial using proton and lithium magnetic resonance spectroscopyIn Kyoon Lyoo
Brain Imaging Center, McLean Hospital, Belmont, MA, USA
Bipolar Disord 5:300-6. 2003....
Mania, glutamate/glutamine and risperidone in pediatric bipolar disorder: a proton magnetic resonance spectroscopy study of the anterior cingulate cortexConstance M Moore
Brain Imaging Center, McLean Hospital, Belmont, MA 02478, USA
J Affect Disord 99:19-25. 2007..In this study, we hypothesized that the children with BPD in need of treatment would have lower Glx/Cr compared with the children with BPD being stably treated with risperidone...
Craving for alcohol and food during treatment for alcohol dependence: modulation by T allele of 1519T>C GABAAalpha6Doug Hyun Han
Brain Imaging Center, McLean Hospital, Harvard Medical University, Belmont, Massachusetts 02478, USA
Alcohol Clin Exp Res 32:1593-9. 2008..We further hypothesized that the T allele of the 1519T>C GABA(A)alpha6 gene would modulate the extent of changes in craving for alcohol and food...
White matter hyperintensities and their associations with suicidality in psychiatrically hospitalized children and adolescentsStefan Ehrlich
McLean Hospital, Harvard Medical School, Boston, MA 02478, USA
J Am Acad Child Adolesc Psychiatry 43:770-6. 2004..The objective of this study was to compare white matter hyperintensities in psychiatrically hospitalized children and youth with and without a history of suicide attempt while controlling for other variables...
Reduced cortical gray matter density in human MDMA (Ecstasy) users: a voxel-based morphometry studyRonald L Cowan
Brain Imaging Center, Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA 02478, USA
Drug Alcohol Depend 72:225-35. 2003....
Lovastatin potentiates the antidepressant efficacy of fluoxetine in ratsPerry F Renshaw
Department of Psychiatry, Harvard Medical School, Belmont, MA 02478, USA
Pharmacol Biochem Behav 92:88-92. 2009..Altered cholesterol levels can affect serotonergic neurotransmission, which might be involved in the clinical efficacy of standard antidepressants...
A preliminary study: novelty seeking, frontal executive function, and dopamine receptor (D2) TaqI A gene polymorphism in patients with methamphetamine dependenceDoug Hyun Han
McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, Belmont, MA 02478, USA
Compr Psychiatry 49:387-92. 2008..In the present study, the association between dopamine D2 polymorphisms, NS, and frontal executive function was studied...
White matter hyperintensities in subjects with cocaine and opiate dependence and healthy comparison subjectsIn Kyoon Lyoo
McLean Hospital Brain Imaging Center and Department of Psychiatry, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA
Psychiatry Res 131:135-45. 2004..Also, there was a trend for lower WMH severity in substance-dependent women relative to the healthy comparison group, possibly due to estrogen's protective effect against cerebrovascular accidents...
Effects of type 1 diabetes on gray matter density as measured by voxel-based morphometryGail Musen
Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
Diabetes 55:326-33. 2006..Our study represents the first comprehensive study of gray matter density changes in type 1 diabetes and suggests that persistent hyperglycemia and acute severe hypoglycemia have an impact on brain structure...
Disrupted white matter tract integrity of anterior cingulate in trauma survivorsMinue J Kim
McLean Hospital Brain Imaging Center, Harvard Medical School, Belmont, Massachusetts, USA
Neuroreport 16:1049-53. 2005..The outcome of the current study suggests that the disruption of the left anterior cingulate white matter tract integrity may play an important role in the pathophysiology of posttraumatic stress disorder...
Subanalysis of the location of white matter hyperintensities and their association with suicidality in children and youthStefan Ehrlich
McLean Hospital, West Cottage, 115 Mill Street, Belmont, MA 02478, USA
Ann N Y Acad Sci 1008:265-8. 2003..This subanalysis of the specific locations of the WMH suggests that youth with deep WMH in the parietal lobe but not in the frontal lobe have a significantly higher prevalence of reported past suicide attempt...
White matter hyperintensities on magnetic resonance imaging of the brain in children with psychiatric disordersIn Kyoon Lyoo
Brain Imaging Center, McLean Hospital, Belmont, MA 02478, USA
Compr Psychiatry 43:361-8. 2002..The development of brain WMH, especially in the frontal lobes, may play a role in the pathophysiology of affective disorders in children and adolescents...
Magnetic resonance spectroscopy: current and future applications in psychiatric researchIn Kyoon Lyoo
McLean Hospital Brain Imaging Center, Belmont, Massachusetts 02478, USA
Biol Psychiatry 51:195-207. 2002..In this review, the current status of MRS applications in psychiatric research is reviewed, and new frontiers and possible future developments are discussed...
Lithium and valproic acid treatment effects on brain chemistry in bipolar disorderSeth D Friedman
Department of Radiology, University of Washington, Seattle, Washington, USA
Biol Psychiatry 56:340-8. 2004..This study examined whether lithium (Li) and valproic acid (VPA) treatment modulated these chemicals...
Regional cerebral cortical thinning in bipolar disorderIn Kyoon Lyoo
McLean Hospital Brain Imaging Center, Harvarrd Medical School, Boston, MA, USA
Bipolar Disord 8:65-74. 2006..This study was conducted to explore differences in cortical thickness between subjects with bipolar disorder and healthy comparison subjects using cortical surface-based analysis...
Decreased N-acetyl-aspartate levels in anterior cingulate and hippocampus in subjects with post-traumatic stress disorder: a proton magnetic resonance spectroscopy studyByung Joo Ham
Department of Psychiatry, Hangang Sacred Heart Hospital, Hallym University Medical Center, Seoul, South Korea
Eur J Neurosci 25:324-9. 2007....
Clinical response of quetiapine in rapid cycling manic bipolar patients and lactate level changes in proton magnetic resonance spectroscopyDajung J Kim
Department of Psychiatry, Seoul National University College of Medicine, Seoul National University Hospital, 28 Yongon Dong, Chongno Gu, Seoul, 110 744, Republic of Korea
Prog Neuropsychopharmacol Biol Psychiatry 31:1182-8. 2007..52, p=0.003). Our findings suggest that quetiapine's antimanic and antidepressant efficacy in patients with rapid cycling bipolar disorder may potentially be related to decreased lactate levels in frontal regions of the brain...
Altered cingulate white matter connectivity in panic disorder patientsDoug Hyun Han
Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
J Psychiatr Res 42:399-407. 2008..Aim of the current study was to explore the white matter connectivity differences between subjects with panic disorder and healthy comparison subjects...
Advances in magnetic resonance imaging methods for the evaluation of bipolar disorderIn Kyoon Lyoo
Department of Psychiatry, Seoul National University, South Korea, Seoul, South Korea
CNS Spectr 11:269-80. 2006..Integrative issues and future directions in this relatively young field, including multi-modal approaches enabling us to produce more comprehensive results, are discussed...
Relationship between N-acetyl-aspartate in gray and white matter of abstinent methamphetamine abusers and their history of drug abuse: a proton magnetic resonance spectroscopy studyYoung Hoon Sung
Department of Psychiatry, Seoul National University College of Medicine and Hospital, Seoul 110 744, Republic of Korea
Drug Alcohol Depend 88:28-35. 2007..In this study, the authors explored differences in brain metabolites between abstinent methamphetamine (MA) abusers and healthy comparison subjects and the associations between metabolite concentrations and clinical characteristics...
Decreased GABA levels in anterior cingulate and basal ganglia in medicated subjects with panic disorder: a proton magnetic resonance spectroscopy (1H-MRS) studyByung Joo Ham
Department of Psychiatry, Hangang Sacred Heart Hospital, Hallym University Medical Center, Seoul, South Korea
Prog Neuropsychopharmacol Biol Psychiatry 31:403-11. 2007..Our data suggested in part that alterations of the GABA function and the energy metabolism in ACC and basal ganglia may play an important role in the pathophysiology of panic disorder...
Decreased frontal white-matter integrity in abstinent methamphetamine abusersAin Chung
Interdisciplinary Program in Brain Science, Seoul National University, Seoul, Korea
Int J Neuropsychopharmacol 10:765-75. 2007..This finding may also be related to impairment in frontal executive function. In addition, the neurotoxic effect of MA on frontal WM may be less prominent in women than in men, possibly due to oestrogen's neuroprotective effect...
A magnetic resonance imaging study of mood stabilizer- and neuroleptic-naïve first-episode maniaLakshmi N Yatham
Division of Mood Disorders, University of British Columbia, Vancouver, BC, Canada
Bipolar Disord 9:693-7. 2007..Studies in first-episode (FE) manic patients have the potential to provide answers to these questions...
Frontal glucose hypometabolism in abstinent methamphetamine usersSeog Ju Kim
Department of Psychiatry, Seoul National University College of Medicine and Hospital, Seoul, Korea
Neuropsychopharmacology 30:1383-91. 2005..Our findings also suggest that the neurotoxic effect of MA on frontal lobes of the brain might be more prominent in men than in women...
Attention deficit hyperactivity symptoms and internet addictionHee Jeong Yoo
Department of Psychiatry, Gyeongsang National University College of Medicine, Jinju, South Korea
Psychiatry Clin Neurosci 58:487-94. 2004..In addition, current findings suggest that the presence of ADHD symptoms, both in inattention and hyperactivity-impulsivity domains, may be one of the important risk factors for Internet addiction...
Prefrontal grey-matter changes in short-term and long-term abstinent methamphetamine abusersSeog Ju Kim
Gil Medical Center, Gachon Medical School, Department of Psychiatry, Incheon, South Korea
Int J Neuropsychopharmacol 9:221-8. 2006..01) than short-term abstinent abusers, but more than the healthy comparison subjects. We report that methamphetamine abusers have prefrontal grey-matter deficit, which may, in part, recover with long-term abstinence...
Brain metabolic alterations in medication-free patients with bipolar disorderStephen R Dager
Department of Radiology, University of Washington, Seattle 98105, USA
Arch Gen Psychiatry 61:450-8. 2004..Bipolar disorder (BD) has substantial morbidity and incompletely understood neurobiological underpinnings...
Modulation of brain and serum glutamatergic concentrations following a switch from conventional neuroleptics to olanzapineDonald C Goff
Schizophrenia Program, Massachusetts General Hospital, Boston, Massachusetts, USA
Biol Psychiatry 51:493-7. 2002....
Intellect declines in healthy elderly subjects and cerebellumJun-Young Lee
Department of Psychiatry, Clinical Research Institute, Seoul National University College of Medicine and Hospital, Seoul, Korea
Psychiatry Clin Neurosci 59:45-51. 2005..The current study suggests that the cerebellum may play an important role in changes of intellectual capacity in old age...
Diminished rostral anterior cingulate activity in response to threat-related events in posttraumatic stress disorderMinue J Kim
Department of Psychology, Seoul National University, Seoul, South Korea
J Psychiatr Res 42:268-77. 2008..The current study specifically focuses on the abnormal activity of the rostral anterior cingulate, using a paradigm which elicits an unexpected processing conflict caused by salient emotional stimuli...
Psychosis of Alzheimer's disease: Gender differences in regional perfusionE K Moran
Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Tilton 201, Boston, MA 02114, USA
Neurobiol Aging 29:1218-25. 2008....
Cerebellar gray matter volume correlates with duration of cocaine use in cocaine-dependent subjectsMinyoung E Sim
Department of Psychiatry, Seoul National University College of Medicine, Seoul 110 744, South Korea
Neuropsychopharmacology 32:2229-37. 2007....
The occurrence of cavum septi pellucidi enlargement is increased in bipolar disorder patientsMinue J Kim
McLean Hospital Brain Imaging Center, Harvard Medical School, Boston, MA, USA
Bipolar Disord 9:274-80. 2007..This study was conducted to evaluate the prevalence of cavum septi pellucidi (CSP) enlargement in patients with bipolar disorder (BD) and healthy comparison subjects...
The effect of internet video game play on clinical and extrapyramidal symptoms in patients with schizophreniaDoug Hyun Han
Schizophr Res 103:338-40. 2008
The neural substrates of affective processing toward positive and negative affective pictures in patients with major depressive disorderByeong Taek Lee
Department of Psychiatry, Hangang Sacred Heart Hospital, Hallym University Medical Center, Seoul, South Korea
Prog Neuropsychopharmacol Biol Psychiatry 31:1487-92. 2007..Also, these findings suggest that the bilateral inferior orbitofrontal cortices and left amygdala may be preferentially recruited in MDD patients, but not in healthy individuals...
Depression and Internet addiction in adolescentsJee Hyun Ha
Department of Psychiatry, School of Medicine, Konkuk University, Seoul, South Korea
Psychopathology 40:424-30. 2007..Third, the relationship between Internet addiction and biogenetic temperament as assessed by the Temperament and Character Inventory was evaluated...
Brain single photon emission computed tomography findings in depressive pseudodementia patientsMaeng Je Cho
Department of Neuropsychiatry, Clinical Research Institute, Seoul National University College of Medicine and Hospital, 28 Yongon Dong, Chongno Gu, Seoul, 110 744 South Korea
J Affect Disord 69:159-66. 2002....
Increased GABA levels in medial prefrontal cortex of young adults with narcolepsySeog Ju Kim
Department of Psychiatry, Gachon University of Medicine and Science, Incheon, South Korea
Sleep 31:342-7. 2008..To explore absolute concentrations of brain metabolites including gamma amino-butyric acid (GABA) in the medial prefrontal cortex and basal ganglia of young adults with narcolepsy...
Relationship between personality trait and regional cerebral glucose metabolism assessed with positron emission tomographyTak Youn
Department of Psychiatry, Seoul National University College of Medicine and Hospital, 28 Yongun-dong, Chongno-gu, 110-744, Seoul, Republic of Korea
Biol Psychol 60:109-20. 2002..The current study provides evidence linking each biogenetic temperament dimension with specific brain areas and provides a promising base for future personality research...
Major depressive disorder with anger attacks and subcortical MRI white matter hyperintensitiesDan V Iosifescu
Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
J Nerv Ment Dis 195:175-8. 2007..Atypical and melancholic MDD subtypes were not significantly associated with brain WMH. In conclusion, subcortical brain vascular lesions may be more prevalent or severe in MDD with anger attacks...
Shape changes of the corpus callosum in abstinent methamphetamine usersJungsu S Oh
Interdisciplinary Program in Medical and Biological Engineering, Seoul National University, 28 Yongun-Dong Chongno-Gu, Seoul, South Korea
Neurosci Lett 384:76-81. 2005....
Association between the catechol O-methyltransferase Val108/158Met polymorphism and alexithymiaByung Joo Ham
Department of Neuropsychiatry, Hangang Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
Neuropsychobiology 52:151-4. 2005..However, there was no significant relationship between the 5-HTTLPR genotype and TAS-20 scores. This indicates a possible association between the COMT Val108/158Met gene polymorphism and alexithymia...
Decreased blood flow of temporal regions of the brain in subjects with panic disorderYujin S Lee
Department of Psychiatry, Eunpyung Metropolitan Hospital, Seoul, Republic of Korea
J Psychiatr Res 40:528-34. 2006..CONCLUSION: We report that there is a decreased cerebral blood flow of temporal regions of the brain in panic disorder and that this decrease may, in part, reflect the clinical severity of panic disorder...
Decreased cerebral blood flow of the right anterior cingulate cortex in long-term and short-term abstinent methamphetamine usersJaeuk Hwang
Department of Psychiatry, Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul 110-744, South Korea
Drug Alcohol Depend 82:177-81. 2006..CONCLUSIONS: We report that abstinent MA users have decreased rCBF in the anterior cingulate cortex with smaller relative decreases in subjects with prolonged abstinence...
Putaminal gray matter volume decrease in panic disorder: an optimized voxel-based morphometry studyHanik K Yoo
Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
Eur J Neurosci 22:2089-94. 2005..The current study reports a putaminal gray matter volume decrease in panic subjects, which may be related to the clinical severity of panic disorder...
Biogenetic temperament and character and attention deficit hyperactivity disorder in Korean childrenHee Jeong Yoo
Department of Psychiatry, Gyeongsang National University College of Medicine, Jinju, South Korea
Psychopathology 39:25-31. 2006..CONCLUSIONS: There were significant correlations between ADHD symptoms and Novelty Seeking. Current findings suggest that Novelty Seeking and ADHD share biogenetic backgrounds...
Three-year follow up of women with and without borderline personality disorder: development of Cloninger's character in adolescenceKyoo Seob Ha
Clinical Research Institute, Seoul National University Hospital and Department of Psychiatry, Seoul National University College of Medicine and Hospital, Seoul, South Korea
Psychiatry Clin Neurosci 58:42-7. 2004..The character development of BPD patients was more fixed and immature than those of healthy comparison subjects...
Brain white-matter hyperintensities and treatment outcome in major depressive disorderDan V Iosifescu
Massachusetts General Hospital, 50 Staniford Street, Suite 401, Boston, Massachusetts 02114, USA
Br J Psychiatry 188:180-5. 2006..CONCLUSIONS: Subcortical white-matter hyperintensities in the left hemisphere (but notin other brain areas) maybe associated with poor response to antidepressant treatment in major depression...
The relationship between temperament and character and psychopathology in community children with overweightJun Won Hwang
Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Korea
J Dev Behav Pediatr 27:18-24. 2006..Compared to nonoverweight and children at risk of overweight, overweight children had distinct patterns of temperament and character that were related to the specific psychopathology...
Serum homocysteine, folate level and methylenetetrahydrofolate reductase 677, 1298 gene polymorphism in Korean schizophrenic patientsYoung Sik Lee
Department of Neuropsychiatry, College of Medicine, Chung Ang University Medical Center, Seoul National University Hospital, Korea
Neuroreport 17:743-6. 2006..These findings suggest that folate supplement may be beneficial to some schizophrenic patients with homocysteinemia due to the genetic defect of methylenetetrahydrofolate reductase...
Neural correlates of clinical symptoms and cognitive dysfunctions in obsessive-compulsive disorderJun Soo Kwon
BK 21 Human Life Sciences, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul 110-744, South Korea
Psychiatry Res 122:37-47. 2003..In particular, the frontal-subcortical circuits might mediate not only symptomatic expression but also cognitive expression in patients with OCD...
Asymmetrically altered integrity of cingulum bundle in posttraumatic stress disorderSeog Ju Kim
Department of Psychiatry, Gachon University of Medicine and Science, Incheon, South Korea
Neuropsychobiology 54:120-5. 2006..7, 25.0, 22.2% decrease, respectively), but not in the right side ROIs. We report an asymmetrical alteration of the cingulum bundle in PTSD...
Basal ganglia shape alterations in bipolar disorderJaeuk Hwang
Department of Psychiatry, Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul 110-744, South Korea
Am J Psychiatry 163:276-85. 2006..The findings more generally demonstrate the sensitivity of the SPHARM analytic technique for detecting subtle anatomical shape differences in small brain regions in the absence of volume differences...
Trait and state aspects of harm avoidance and its implication for treatment in major depressive disorder, dysthymic disorder, and depressive personality disorderKelley Yost Abrams
Department of Psychiatry, Seoul National University College of Medicine and Hospital, South Korea
Psychiatry Clin Neurosci 58:240-8. 2004....
