The Cognitive Profiles of Partial PTSD in Vietnam War Veterans / 신경정신의학

Objectives@#This study identifies the distinct cognitive function profiles of partial posttraumatic stress disorder (PTSD). @*Methods@#Medical records of Vietnam War Korean Veterans, who visited a psychiatric clinic and underwent a Clinician-Administered PTSD scale (CAPS) and neurocognitive test on the same day, were retrospectively reviewed. Based on the CAPS interview, participants were divided into partial PTSD (n=10) and non-PTSD (n=36) groups. The neurocognitive test score profiles of both groups were compared. Analysis of covariance was performed to adjust the contribution of possible confounders to cognitive function. @*Results@#Cognitive profile analysis displayed significantly poorer performance of executive function and mental flexibility (measured by the Trail Making Test B) and concentration (measured by mini mental status exam) in the partial PTSD group. When adjusted with age, depressive symptom measure, and education level, no significant differences were obtained in the cognitive profiles between both groups. @*Conclusion@#Results of the current study revealed a deficit in executive function and concentration in partial PTSD subjects compared to non-PTSD. However, when adjusted with possible confounders such as depressive symptoms, the cognitive profiles of partial PTSD displayed no significant difference with the cognitive profiles of non-PTSD subjects.

Usefulness of Silent MRA for Evaluation of Aneurysm after Stent-Assisted Coil Embolization

Objective@#To determine the usefulness of Silent MR angiography (MRA) for evaluating intracranial aneurysms treated with stent-assisted coil embolization. @*Materials and Methods@#Ninety-nine patients (101 aneurysms) treated with stent-assisted coil embolization (Neuroform atlas, 71 cases; Enterprise, 17; LVIS Jr, 9; and Solitaire AB, 4 cases) underwent time-of-flight (TOF) MRA and Silent MRA in the same session using a 3T MRI system within 24 hours of embolization. Two radiologists independently interpreted both MRA images retrospectively and rated the image quality using a 5-point Likert scale. The image quality and diagnostic accuracy of the two modalities in the detection of aneurysm occlusion were further compared based on the stent design and the site of aneurysm. @*Results@#The average image quality scores of the Silent MRA and TOF MRA were 4.38 ± 0.83 and 2.78 ± 1.04, respectively (p < 0.001), with an almost perfect interobserver agreement. Silent MRA had a significantly higher image quality score than TOF MRA at the distal internal carotid artery (n = 57, 4.25 ± 0.91 vs. 3.05 ± 1.16, p < 0.001), middle cerebral artery (n = 21, 4.57 ± 0.75 vs. 2.19 ± 0.68, p < 0.001), anterior cerebral artery (n = 13, 4.54 ± 0.66 vs. 2.46 ± 0.66, p < 0.001), and posterior circulation artery (n = 10, 4.50 ± 0.71 vs. 2.90 ± 0.74, p = 0.013). Silent MRA had superior image quality score to TOF MRA in the stented arteries when using Neuroform atlas (4.66 ± 0.53 vs. 3.21 ± 0.84, p < 0.001), Enterprise (3.29 ± 1.59 vs. 1.59 ± 0.51, p = 0.003), LVIS Jr (4.33 ± 1.89 vs. 1.89 ± 0.78, p = 0.033), and Solitaire AB stents (4.00 ± 2.25 vs. 2.25 ± 0.96, p = 0.356). The interpretation of the status of aneurysm occlusion exhibited significantly higher sensitivity with Silent MRA than with TOF MRA when using the Neuroform Atlas stent (96.4% vs. 14.3%, respectively, p < 0.001) and LVIS Jr stent (100% vs. 20%, respectively, p = 0.046). @*Conclusion@#Silent MRA can be useful to evaluate aneurysms treated with stent-assisted coil embolization, regardless of the aneurysm location and type of stent used.

A Review on Sleep Disorders Similar to REM Sleep Behavior Disorder / 수면정신생리

REM sleep behavior disorder is parasomnia characterized by unpleasant dreams and dream-enactment behaviors associated with excessive electromyography activity in REM sleep. This may appear idiopathic or secondary to other neurological or medical conditions. REM sleep behavior disorder, which appears to be idiopathic, most often implies the possibility of later neurodegenerative diseases due to synucleinopathy, so accurate diagnosis is important in predicting prognosis. For the diagnosis of REM sleep behavioral disorder, REM sleep without atonia, which appears in the polysomnography, is essential. Obstructive sleep apnea, trauma-related sleep disorders, and vigorous periodic leg movements during sleep are known as diseases that show dream enactment behavior in elderly patients. Considering that it may be accompanied by other sleep disorders that can mimic REM sleep behavioral disorders, it is important to differentiate sleep

A Review on the Cause of Fever During Clozapine Treatment / 정신신체의학

Clozapine is accepted as the “gold standard” antipsychotics for treatment-resistant schizophrenia. Clozapine rarely causes extrapyramidal syndrome and tardive dyskinesia, which are common with other antipsychotics, and only a transient elevation of hyperprolactinemia has been reported. Despite such clinical usefulness, there are limitations to the use of clozapine due to adverse drug reactions (ADR). Fever is a common in adverse drug reactions associated with clozapine. At initiation of clozapine most fatal ADR such as agranulocytosis and neuroleptic malignant syndrome associated with fever, in which case clozapine should be discontinued immediately. However, as benign causes of fever are much more frequent than life-threatening ADR, clozapine should not be discontinued unconditionally in the event of fever during clozapine initiation. In addition, fever may occur at any time during the maintenance of clozapine treatment. In particular, since the risk of pneumonia does not decrease over time, and clozapine has a higher risk of pneumonia than other antipsychotic drugs, it is recommended to adjust clozapine dosage through therapeutic drug monitoring.

Tissue-specific Role of CX₃CL1 Expressing Immune Cells and Their Relationships with Human Disease

Chemokine (C-X3-C motif) ligand 1 (CX₃CL1, also known as fractalkine) and its receptor chemokine (C-X3-C motif) receptor 1 (CX₃CR1) are widely expressed in immune cells and non-immune cells throughout organisms. However, their expression is mostly cell type-specific in each tissue. CX₃CR1 expression can be found in monocytes, macrophages, dendritic cells, T cells, and natural killer (NK) cells. Interaction between CX3CL1 and CX₃CL1 can mediate chemotaxis of immune cells according to concentration gradient of ligands. CX₃CL1 expressing immune cells have a main role in either pro-inflammatory or anti-inflammatory response depending on environmental condition. In a given tissue such as bone marrow, brain, lung, liver, gut, and cancer, CX₃CL1 expressing cells can maintain tissue homeostasis. Under pathologic conditions, however, CX₃CL1 expressing cells can play a critical role in disease pathogenesis. Here, we discuss recent progresses of CX3CL1/CX₃CL1 in major tissues and their relationships with human diseases.

Clinical Feature and Outcomes of Secondary Hydrocephalus Caused by Head Trauma / 대한신경손상학회지

OBJECTIVE: Post-traumatic hydrocephalus (PTH) is a frequent and serious complication following brain injury. The incidence of PTH varies greatly among studies. The purpose of this study was to investigate the incidence and treatment of PTH in patients with head trauma. METHODS: We examined 956 patients with head trauma who visited our center from January 2012 to December 2015. The hydrocephalus diagnosis was based on radiologic findings and clinical features, and patients were classified into the mild (Group 1, Glasgow Coma Scale score [GCS] 13–15), moderate (Group 2, GCS 9–12), or severe (Group 3, GCS 3–8) brain injury group according to their GCS at admission. To compare these groups, we used age, gender, radiologic findings, PTH developmental period, and postoperative results (Glasgow Outcome Scale). RESULTS: Of the 956 patients, 24 (2.5%) developed PTH. PTH occurred in 11 (1.4%), 3 (5.6%), and 10 (7.0%) patients in Groups 1, 2, and 3, respectively. Of the 24 patients with PTH, 22 (91.7%) developed PTH within 12 weeks post-trauma; the higher the GCS, the later the onset, and the lower the GCS, the earlier the onset (p=0.019). Twenty-one patients underwent ventriculoperitoneal shunting, and 13 had improved symptoms. CONCLUSION: The incidence of PTH cannot be ignored. The possibility of PTH needs to be considered in patients with head trauma and appropriate follow-up should be undertaken. PTH is a treatable complication and patients' quality of life and neurological status can be improved if the appropriate treatment is selected and applied.

Cutaneous Anaplastic Large T-Cell Lymphoma with Invasion of the Central Nervous System: A Case Report

Anaplastic large T-cell lymphoma (ALCL) encompasses different clinical entities that can be aggressive or localized. Scalp anaplastic lymphoma kinase (ALK)-negative ALCL is considered a localized lymphoma, and usually extends to the regional lymph nodes; intracranial invasion is rare. A 74-year-old woman was diagnosed with scalp ALK-negative ALCL, but did not exhibit invasion of the lymph nodes. Computed tomography and magnetic resonance imaging revealed intracranial masses with bony erosions. We treated the patient using CHOP chemotherapy and achieved short-term regression of the scalp and intracranial lesions. However, the patients ultimately died of pneumonia during the pancytopenic period. Therefore, caution must be exercised when treating scalp ALK-negative ALCL with intracranial invasion.

The Effects of Equine-assisted Activities and Therapy on Resting-state Brain Function in Attention-deficit/Hyperactivity Disorder: A Pilot Study

OBJECTIVE: Equine-assisted activities and therapy (EAA/T) have been used as adjunct treatment options for physical and psychosocial rehabilitation. However, the therapeutic effects on resting-state brain function have not yet been studied. The aim of this study is to investigate the effects of EAA/T on participants with attention-deficit/hyperactivity disorder (ADHD) by comparing resting-state functional magnetic resonance imaging (rs-fMRI) signals and their clinical correlates. METHODS: Ten participants with ADHD participated in a 12-week EAA/T program without any medication. Two rs-fMRIs were acquired for all participants before and after EAA/T. For estimating therapeutic effect, the regional homogeneity (ReHo) method was applied to capture the changes in the regional synchronization of functional signals. RESULTS: After the EAA/T program, clear symptom improvement was found even without medication. Surface-based pairwise comparisons revealed that ReHo in the right precuneus and right pars orbitalis clusters had significantly diminished after the program. Reduced ReHo in the right precuneus cluster was positively correlated with changes in the scores on DuPaul’s ADHD Rating Scale-Korean version. CONCLUSION: Our results indicate that EAA/T is associated with short-range functional connectivity in the regions related to the default mode network and the behavioral inhibition system, which are associated with symptom improvement.

Association between the Daytime Plasma Cortisol Level and Depression Component of Hamilton Depression Rating Scale in Korean Depression Clinic Outpatients / 신경정신의학

OBJECTIVES: There is evidence that Hypothalamic-Pituitary-Adrenocortical (HPA) system dysregulation plays a role in the pathophysiology of depression. However which psychiatric symptoms are related to HPA system dysregulation has not been studied well. The primary aim of this study was to investigate which symptom components of the Hamilton Depression Rating Scale (HAM-D) are related to HPA system dysregulation in Korean psychiatric outpatients. The secondary aim was to find other variables that have association with HAM-D components. METHODS: This study was a retrospective review of the charts of outpatients who first visited Samsung Medical Center Depression Clinic between July 2012 and October 2013. Among them those who checked the plasma cortisol level and HAM-D within one week of their first visit were selected. Fifty nine patients were selected. The HAM-D was divided into four components, including depression, anxiety, insomnia, and somatic components. Multiple regression of cortisol level was used for four subscales. RESULTS: Significant positive correlations were observed between the plasma cortisol level and depression component of HAM-D (beta=0.251, p=0.049). Age also showed negative correlation with the depression component of HAM-D (beta=-0.427, p=0.002). However anxiety, insomnia and somatic components of HAM-D did not show correlation with plasma cortisol level. CONCLUSION: Our study suggests that in Korean depression clinic outpatients, the depression component of HAM-D is related to plasma cortisol level.

The Effect of Hippotherapy and Medication on Children with Attention Deficit Hyperactivity Disorder: A Pilot Study / 신경정신의학

OBJECTIVES: This study researched the clinical effects of hippotherapy and medication in attention deficit hyperactivity disorder (ADHD) children. METHODS: The study employed an open label randomized controlled trial. Participants were 10 children of ages between 6 and 12 years. These subjects were placed in 2 groups : the hippotherapy group and the medication group. Evaluation tools used in this study include Affective Disorders and Schizophrenia-Present and Lifetime Version- Korean Version, the Wechsler Intelligence Scale for Children-IV, Korean Child Behavior Check List (K-CBCL), ADHD rating scale (ARS), Clinical Global Impression (CGI), and Quantitative electroencephalography (QEEG). RESULTS: Grossly scores of investigator-administered ADHD rating scale (ARS-I), K-CBCL, and CGI-Severity of Illness scale were improved in both the hippotherapy and the medication group. The ARS-I scores of the Hippotherapy group were not significantly different from baseline after 12 weeks. In the QEEG, theta/beta ratio of Pz area in the hippotherapy group was significantly different from baseline. Children treated with medication showed significant difference from baseline in ARS-I, K-CBCL subscales, and QEEG. CONCLUSION: The use of hippotherapy could be a viable treatment strategy as a part of a multimodal therapy for children with ADHD. This pilot study provides good prospects for future studies to document these positive trends on larger samples.

Association between Insight and Neuropsychiatric Symptoms in Alzheimer's Dementia : A Clinical Research Center for Dementia of South Korea Study (CREDOS) / 신경정신의학

OBJECTIVES: The aim of this study was to identify the association between insight and neuropsychiatric symptoms in patients with Alzheimer's dementia (AD). METHODS: We examined 2607 patients with AD in the Clinical Research Center for Dementia of South Korea study and designed a cross-sectional study. Each patient underwent psychiatric, neurological, and medical examination, interview for caregivers, laboratory tests, neuropsychological tests, and brain MRI. Cognitive function was measured using the Korean version of the Mini-Mental State Examination, Global Deterioration Scale, and Clinical Dementia Rating. Behavioral and psychological symptoms were measured using the Korean version of the Neuropsychiatric Inventory. Daily Living was measured using the Barthel Index for daily living activities and Seoul-Instrumental Activities of Daily Living. Insight was classified according to 'with insight', 'partial insight', and 'without insight' by interview with caregivers. RESULTS: Among the 2607 patients, 990 were included in the 'with insight' group, 1191 were included in the 'Partial insight' group, and the 'without insight' group included 426 patients. The 'without insight' group had a significantly higher aggression level than the 'with insight' group, but not the 'partial insight' group [odds ratio (OR)=1.46, 95% confidence interval (CI) : 1,14-1.88]. A significantly lower prevalence of depression was observed in the 'Partial insight' group and the 'without insight' group, compared to the 'with insight' group (OR=0.51, 95% CI : 0.43-0.61/OR=0.61, 95% CI : 0.48-0.78). The 'partial insight' group showed a lower anxiety level than the 'with insight' group (OR=0.63, 95% CI : 0.53-0.75). CONCLUSION: Findings of this study confirmed that insight level was associated with aggression, depression, and anxiety in patients with Alzheimer' dementia.

Association between Cognitive Subdomains and Extrapyramidal Signs in Alzheimer Disease: A Clinical Research Center for Dementia of South Korea (CREDOS) Study

OBJECTIVES: We aimed to investigate the prevalence of Extrapyramidal signs (EPS) and the associations between EPS and cognitive subdomains in patients with Alzheimer disease (AD). METHODS: We recruited 1,324 patients with AD from the Clinical Research of Dementia of South Korea (CREDOS), a hospital based cohort study with fifty-six participating hospitals. We estimated cognitive subdomain using the Seoul Neuropsychological Screening Battery-Dementia version (SNSB-D). Dementia severity was measured by Clinical Dementia Rating Sum of Boxes (CDR-SB) and Korean version of Mini-Mental Status Examination (K-MMSE). The EPS group was defined by the presence of at least one EPS based on a focused neurologic examination. RESULTS: The prevalence of patients with EPS was 11%. These had higher CDR-SB scores than non-EPS group. After controlling for demographic, radiological, and dementia severity (CDR-SB) factors, EPS group showed lower cognitive ability in the subdomains for visuospatial and frontal-executive function than non-EPS group. The patients with EPS were showed significantly higher scores in the subdomain for memory function. CONCLUSION: The presence of EPSs in patients with AD was associated with lower visuospatial, frontal-executive function and higher memory function.

Association between Depression and Education Level in Alzheimer's Dementia : A CREDOS (Clinical Research Center for Dementia of South Korea) Study

OBJECTIVES: We aimed to identify the association depression with education level in patients with Alzheimer's dementia (AD). METHODS: We examined 911 patients with AD in CREDOS (Clinical Research Center for Dementia of South Korea) study and designed cross-sectional study. Each patient underwent psychiatrical, neurological and medical examination, interview for caregivers, laboratory tests, neuropsychological tests, and brain MRI. Cognitive function was measured using Korean version of Mini-Mental State Examination, Global Deterioration Scale and Clinical Dementia Rating. Psycho-Behavioral symptom was measured using Caregiver-Administered Neuropsychiatric Inventory. Daily Living was measured using Barthel Index for daily living activities and Seoul-Instrumental Activities of Daily Living. Depressive symptoms using the Korean version of the Short form on Geriatric Depression Scale were measured. Education was classified into low, intermediate, and high levels. 621 patients were performed APOE genotyping among the 911 patients. RESULTS: Out of the 911 patients, 477 were low education, 287 were intermediate education, and 147 were high education. 341 patients had depression. In logistic regression model we confirmed low education was the risk factor of depression (OR 2.26, 95% CI 1.66-3.07). CONCLUSION: This study confirmed that low education was associated with depression in Alzheimer's dementia.

Clinical Case Coference / 신경정신의학

No abstract available.

Serotonin Transporter Gene Polymorphisms and Chronic Illness of Depression

Clinical course of depression is variable. The serotonin transporter gene is one of the most studied genes for depression. We examined the association of serotonin transporter gene polymorphisms with chronicity and recurrent tendency of depression in Korean subjects. This cross-sectional study involved 252 patients with major depression. Patients were genotyped for s/l polymorphisms in 5-HTT promoter region (5-HTTLPR), s/l variation in second intron of the 5-HTT gene (5-HTT VNTR intron2). Chronicity was associated with 5-HTTLPR. Patients with l/l had higher rate of chronicity than the other patients (l/l vs s/l or s/s; odds ratio, 4.45; 95% confidence interval, 1.59-12.46; P=0.005; logistic regression analysis). Recurrent tendency was not associated with 5-HTTLPR. Chronicity and recurrent tendency were not associated with 5-HTT VNTR intron2. These results suggest that chronic depression is associated with 5-HTTLPR.