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Jung W, Moon E, Lim HJ, Park JM, Lee BD, Lee YM, Jeong H, Suh H, Kim K. The Dropout Rates and Associated Factors in Patients with Mood Disorders in Long-term Naturalistic Treatment. Clin Psychopharmacol Neurosci 2024; 22:263-275. [PMID: 38627073 PMCID: PMC11024694 DOI: 10.9758/cpn.23.1089] [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] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/09/2023] [Accepted: 05/22/2023] [Indexed: 04/20/2024]
Abstract
Objective Although maintenance treatment for mood disorders is important, the treatment discontinuation rate is reported to be high. This study aimed to investigate the dropout rates and associated factors in mood disorders. Methods The patients in a mood disorder clinic (n = 535) were examined. Demographic and clinical factors, scores of psychometric scales, time to dropout from initial treatment in patients with bipolar disorder (BP) (n = 288) and depressive disorder (DD) (n = 143) were evaluated based on database of the mood disorder clinic. Results Among the studied patients with BP and DD, 50% showed dropout in 4.05 and 2.17 years, respectively. The mean survival times were 8.90 years in bipolar disorder I (BP-I), 5.19 years in bipolar II disorder, 3.22 years in bipolar disorder not otherwise specified, 4.24 years in major depressive disorder, and 4.03 years in other depressive disorders. In the multivariate Cox proportional hazards regression model in the BP group, diagnosis BP-I was found to be significantly related to the decrease in dropout rate (hazard ratio [HR] = 0.22, p = 0.001); however, increased past suicide attempt number was significantly related to the increase in dropout rate (HR = 1.13, p = 0.017). In the DD group, none of anxiety disorders as comorbidity, increased scores of openness, and extraversion personality were related to the increase in dropout rate. Conclusion Patients with BP, especially BP-I, showed a lower dropout rate as compared to patients with other mood disorders.
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Affiliation(s)
| | - Eunsoo Moon
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Hyun Ju Lim
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Je Min Park
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Byung Dae Lee
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Young Min Lee
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Heejeong Jeong
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Hwagyu Suh
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Kyungwon Kim
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
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Ko H, Lim HJ, Park J, Kim K, Suh H, Lee BD, Lee YM, Moon E, Kim DR, Park JH, Shin MJ, Lee YH. Subjective Experience on Virtual Reality-Assisted Mental Health Promotion Program. Psychiatry Investig 2024; 21:380-386. [PMID: 38695045 PMCID: PMC11065531 DOI: 10.30773/pi.2023.0286] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/18/2023] [Accepted: 01/12/2024] [Indexed: 05/04/2024] Open
Abstract
OBJECTIVE Mental health promotion programs using virtual reality (VR) technology have been developed in various forms. This study aimed to investigate the subjective experience of a VR-assisted mental health promotion program for the community population, which was provided in the form of VR experience on a bus to increase accessibility. METHODS Ninety-six people participated in this study. The relationship between the subjective experience and mental health states such as depression, anxiety, perceived stress, and quality of life was explored. The subjective experience on depression and stress before and after VR program treatment was compared using the Wilcoxon signed-rank test. The satisfaction with the VR-assisted mental health promotion program was examined after using the VR program. RESULTS The VR-assisted mental health promotion program on a bus significantly improved subjective symptoms such as depression (p=0.036) and perceived stress (p=0.010) among all the participants. Among the high-risk group, this VR program significantly relieved subjective depressive feeling score (p=0.033), and subjective stressful feeling score (p=0.035). In contrast, there were no significant changes in subjective depressive feelings (p=0.182) and subjective stressful feelings (p=0.058) among the healthy group. Seventy-two percent of the participants reported a high level of satisfaction, scoring 80 points or more. CONCLUSION The findings of this study suggest that the VR-assisted mental health promotion program may effectively improve the subjective depressive and stressful feelings. The use of VR programs on buses to increase of accessibility for the community could be a useful approach for promoting mental health among the population.
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Affiliation(s)
- Hyebin Ko
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Ju Lim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychology, Gyeoungsang National University, Jinju, Republic of Korea
| | - Jeonghyun Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kyungwon Kim
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychology, Gyeoungsang National University, Jinju, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychology, Gyeoungsang National University, Jinju, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Du-Ri Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Health Convergence Medicine Laboratory, Pusan National University Hospital, Busan, Republic of Korea
| | - Jong-Hwan Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Health Convergence Medicine Laboratory, Pusan National University Hospital, Busan, Republic of Korea
| | - Myung-Jun Shin
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University Hospital, Busan, Republic of Korea
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Rusch C, Flanagan R, Suh H, Subramanian I. To restrict or not to restrict? Practical considerations for optimizing dietary protein interactions on levodopa absorption in Parkinson's disease. NPJ Parkinsons Dis 2023; 9:98. [PMID: 37355689 DOI: 10.1038/s41531-023-00541-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 06/05/2023] [Indexed: 06/26/2023] Open
Abstract
Administration of levodopa for Parkinson's disease (PD) has remained the most effective therapy for symptom management despite being in use for over 50 years. Advancing disease and age, changing tolerability and gastrointestinal (GI) dysfunction may result in change in dietary habits and body weight, as well as unpredictable motor fluctuations and dyskinesias. Dietary proteins which convert into amino acids after digestion are implicated as major factors that inhibit levodopa absorption. For people living with PD (PwP) who experience motor fluctuations, low protein diets (LPD) and protein redistribution diets (PRD) may be effective and are often recommended as a non-pharmacologic approach for improving levodopa bioavailability. However, there is a lack of consensus on a standard definition of these diets and appropriate treatment algorithms for usage. This may be due to the paucity of high-level evidence of LPD and PRD in PwP and whether all or specific subgroups of patients would benefit from these strategies. Managing diet and protein intake with proper education and monitoring may reduce complications associated with these diets such as dyskinesias and unintentional weight loss. Additionally, alterations to medications and GI function may alter levodopa pharmacokinetics. In this narrative review we focus on 1) mechanisms of dietary protein and levodopa absorption in the intestine and blood brain barrier, 2) dietetic approaches to manage protein and levodopa interactions and 3) practical issues for treating PwP as well as future directions to be considered.
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Affiliation(s)
- C Rusch
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, University of Florida, Gainesville, FL, USA.
- Department of Neurology, Norman Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, USA.
| | | | - H Suh
- Parkinson's Disease Research, Education, and Clinical Center, Greater Los Angeles Veterans Affairs Medical Center, Los Angeles, CA, USA
| | - I Subramanian
- Parkinson's Disease Research, Education, and Clinical Center, Greater Los Angeles Veterans Affairs Medical Center, Los Angeles, CA, USA
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
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Suh H, Moon E, Park JM, Lee BD, Lee YM, Jeong HJ, Kim K, Park J, Lim HJ. A Validation Study of Mental Health Monitoring Through a Mobile Application. Psychiatry Investig 2023; 20:575-580. [PMID: 37357673 DOI: 10.30773/pi.2023.0047] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/03/2023] [Indexed: 06/27/2023] Open
Abstract
OBJECTIVE Face-to-face evaluation is the most important in psychiatric evaluation, but smart healthcare, including non-face-to-face evaluation, can be beneficial considering the situation in which face-to-face evaluation is limited or the preventive aspect of mental illness. In this paper, we aimed to check whether mental health screening tests have the same significance as paper-based tests even when collected through mobile applications. METHODS A smart mental healthcare screening test was conducted on the 1,327 community subjects. We measured two indicators of depression (Patient Health Questionnaire 9-item scale, PHQ-9) and anxiety (Generalized Anxiety Disorder 7-item scale, GAD-7) to check mental health conditions. RESULTS The average Cronbach's alpha value of the PHQ-9 questionnaire was good at 0.870. As a result of PHQ-9's principal component analysis, one component with an eigenvalue of 1 or more was identified, which is suitable to be described as a single factor. The average Cronbach's alpha value of the GAD-7 was 0.919. The structural validity of the GAD-7 was confirmed through principal component analysis. CONCLUSION Our results show that PHQ-9 and GAD-7 scales performed through mobile applications can have the same meaning as paper-based tests. Surveys using a tablet PC, or smartphone application can monitor residents' mental health and accumulate data. Based on these data, smart mental health management can check the mental health of residents and treat mental illness in connection with medical services.
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Affiliation(s)
- Hwagyu Suh
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Je-Min Park
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Byung-Dae Lee
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Young-Min Lee
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Hee-Jeong Jeong
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kyungwon Kim
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Jeonghyun Park
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Ju Lim
- Department of Psychiatry, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychology, Gyeongsang National University, Jinju, Republic of Korea
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Lim HJ, Moon E, Kim K, Suh H, Park J, Kim DR, Park JH, Shin MJ, Lee YH. Cluster Analysis on the Mental Health States in a Community Sample of Young Women During Pre-Pregnancy, Pregnancy, or the Postpartum Period. Psychiatry Investig 2023; 20:445-451. [PMID: 37253470 DOI: 10.30773/pi.2023.0002] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/23/2023] [Indexed: 06/01/2023] Open
Abstract
OBJECTIVE It is necessary to identify the mental health types of young women considering the importance of the mental health during the peripartum period. This study aimed to classify the mental health types in a community sample of young women with pre-pregnancy, pregnancy, or the postpartum period. METHODS A total of 293 young women during pre-pregnancy, pregnancy, or the postpartum period were included in this study. The clinical characteristics of depression, anxiety, perceived stress, and quality of life were assessed. The clinical characteristics of the subject were classified by cluster analysis and compared by analysis of variance. RESULTS From the cluster analysis, the subjects were classified into three groups. Cluster 1 showed significantly lower depression and anxiety and higher quality of life than those of cluster 2 and 3. Cluster 2 demonstrated significantly higher depression and anxiety and lower quality of life than those of cluster 3 and 1. Cluster 3 represented the intermediate levels between cluster 2 and 1. CONCLUSION This study suggested that young women during pre-pregnancy, pregnancy, or the postpartum period might be in a good mental health group, a high-risk group requiring active monitoring, or a group in need of treatment. By monitoring mental health, the groups with high risk or requiring treatment could be discovered and proper management for prevention or improvement of mental health and quality of life can be provided.
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Affiliation(s)
- Hyun Ju Lim
- Department of Psychology, Gyeongsang National University, Jinju, Republic of Korea
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Kyungwon Kim
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Jeonghyun Park
- Department of Psychiatry and Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Du-Ri Kim
- Health Convergence Medicine Laboratory, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Jong-Hwan Park
- Health Convergence Medicine Laboratory, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Myung-Jun Shin
- Department of Rehabilitation Medicine, Pusan National University School of Medicine, Pusan National University Hospital, Busan, Republic of Korea
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Yoon A, Payne J, Suh H, Chan A, Oh H. Complications associated with mini-screw assisted rapid palatal expansion. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chang J, Suh H, Lewis J, Bosenberg M, Saltzman W, Girardi M. 580 Biodegradable bioadhesive nanoparticle delivery of chemotherapy for the treatment of cutaneous malignancies. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lee K, Lee YM, Park JM, Lee BD, Moon E, Jeong HJ, Suh H, Kim HJ, Pak K, Choi KU. The Relationship of Plasma Transthyretin Level with Global or Regional Amyloid Beta Burden in Subjects with Amnestic Mild Cognitive Impairment: Cross-Sectional Amyloid PET Study. PSYCHIAT CLIN PSYCH 2022. [DOI: 10.5152/pcp.2022.21206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Suh H, Lee YM, Park JM, Lee BD, Moon E, Jeong H, Kim SY, Lee KY, Kim HJ, Pak K, Choi KU, Mun CW, Chung YI. Smaller hippocampal volume in APOE ε4 carriers independent of amyloid-β (Aβ) burden. Psychiatry Res Neuroimaging 2021; 317:111381. [PMID: 34508954 DOI: 10.1016/j.pscychresns.2021.111381] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/12/2021] [Accepted: 08/25/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To investigate the association of the APOE ε4 genotype with hippocampal volume, independent of Aβ burden. METHOD This cross-sectional study included 71 participants with mild cognitive impairment or mild AD. All participants were divided into carriers or non-carriers of the ε4 allele. The main outcome was hippocampal volume measured using structural magnetic resonance imaging; 18F-florbetaben positron emission tomography was additionally performed to investigate the association of APOE ε4 genotype with hippocampal volumes, independently of Aβ burden. Analysis of covariance was conducted to compare the differences in hippocampal volumes between carriers and non-carriers of the ε4 allele after controlling for global Aβ burden or local hippocampal Aβ burden. RESULTS The APOE ε4 genotype was associated with a smaller right and total hippocampal volume (right: 3160.16 ± 365.71 vs. 3365.24 ± 434.88, p < 0.05; total: 6257.48 ± 790.60 vs. 6599.52 ± 840.58, p < 0.05), independent of Aβ burden. CONCLUSION Our findings on the association of APOEε4 genotype with hippocampal volume independent of Aβ burden suggest that the APOEε4 genotype may contribute to hippocampal neurodegeneration through an Aβ-independent mechanism.
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Affiliation(s)
- Hwagyu Suh
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young-Min Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
| | - Je-Min Park
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Byung-Dae Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hee Jeong
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kang Yoon Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea; Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hak-Jin Kim
- Department of Radiology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyoungjune Pak
- Department of Nuclear Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyung-Un Choi
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea; Department of Pathology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Chi-Woong Mun
- Department of Biomedical Engineering and FIRST, Inje University, Gimhae, Republic of Korea
| | - Young-In Chung
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
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Jeong HJ, Lee YM, Park JM, Lee BD, Moon E, Suh H, Kim HJ, Pak K, Choi KU, Chung YI. Reduced Thickness of the Anterior Cingulate Cortex as a Predictor of Amnestic-Mild Cognitive Impairment Conversion to Alzheimer's Disease with Psychosis. J Alzheimers Dis 2021; 84:1709-1717. [PMID: 34719496 DOI: 10.3233/jad-215005] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND A long-term follow-up study in patients with amnestic mild cognitive impairment (aMCI) is needed to elucidate the association between regional brain volume and psychopathological mechanisms of Alzheimer's disease with psychosis (AD + P). OBJECTIVE The purpose of this study was to investigate the effect of the thickness of the angular cingulate cortex (ACC) on the risk of AD + P conversion in patients with aMCI. METHODS This was a hospital-based prospective longitudinal study including 174 patients with aMCI. The main outcome measure was time-to-progression from aMCI to AD + P. Subregions of the ACC (rostral ACC, rACC; caudal ACC, cACC) and hippocampus (HC) were measured as regions of interest with magnetic resonance imaging and the Freesurfer analysis at baseline. Survival analysis with time to incident AD + P as an event variable was calculated with Cox proportional hazards models using the subregions of the ACC and HC as a continuous variable. RESULTS Cox proportional hazard analyses showed that the risk of AD + P was associated with sub-regional ACC thickness but not HC volume: reduced cortical thickness of the left cACC (HR [95%CI], 0.224 [0.087-0.575], p = 0.002), right cACC (HR [95%CI], 0.318 [0.132-0.768], p = 0.011). This association of the cACC with the risk of AD also remained significant when adjusted for HC volume. CONCLUSION We found that reduced cortical thickness of the cACC is a predictor of aMCI conversion to AD + P, independent of HC, suggesting that the ACC plays a vital role in the underlying pathogenesis of AD + P.
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Affiliation(s)
- Hee-Jeong Jeong
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young-Min Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Je-Min Park
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Byung-Dae Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hak-Jin Kim
- Department of Radiology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyoungjune Pak
- Department of Nuclear Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyung-Un Choi
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Pathology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Young-In Chung
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
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Jeong HJ, Suh H, Lee YM, Kyung Park H, Kim HJ, Pak K, Choi KU, Chung YI. Association of Temporolimbic Volumes with Treatment Response to Antipsychotic Medication for Delusion in Patients with Alzheimer's Disease. Alpha Psychiatry 2021; 22:244-249. [PMID: 36447443 PMCID: PMC9685667 DOI: 10.1530/alphapsychiatry.2021.21157] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/20/2021] [Indexed: 06/16/2023]
Abstract
OBJECTIVE This study investigated the association between gray matter volume and the treatment response to antipsychotic medication in patients with Alzheimer's disease (AD). METHODS We included 26 AD patients with delusions from the Memory Impairment Center of the Pusan National University Hospital in South Korea. All participants underwent baseline brain magnetic resonance imaging and took risperidone as an antipsychotic medication for 6 weeks. Gray matter volumes were measured using voxel-based morphometry at baseline. Treatment response with respect to delusional symptoms was defined as the change in delusion item scores in the Korean version of the Neuropsychiatry Inventory (K-NPI), from baseline to 6 weeks later. A voxel-based multiple linear regression model integrated with statistical parametric mapping was used to investigate the association between gray matter volume and treatment response after controlling for covariates. RESULTS The treatment response was significantly positively correlated with gray matter volume in the temporal lobe (both the fusiform gyri and the left superior and inferior temporal gyri) and the limbic system (the left parahippocampal gyrus and left amygdala) after controlling for age, sex, education level, total intracranial volume, risperidone dosage, baseline Korean version of the Mini-Mental Status Examination scores, and baseline K-NPI scores for the delusion and non-delusion domains (P < .001, uncorrected, KE > 100 voxels). CONCLUSION Our findings suggest that specific gray matter volumes, including those of the temporal region and the limbic system, may affect treatment response to antipsychotic medication in terms of delusional symptoms in patients with AD.
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Affiliation(s)
- Hee-Jeong Jeong
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young-Min Lee
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hye Kyung Park
- Department of Psychiatry, Pusan National University School of Medicine, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hak-Jin Kim
- Department of Radiology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyongjune Pak
- Department of Nuclear Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Kyung-Un Choi
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Pathology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Young-In Chung
- Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
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12
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Jeong Jeong HJ, Suh H, Lee YM, Park HK, Kim HJ, Pak K, Choi KU, Chung YI. Association of Temporolimbic Volumes with Treatment Response to Antipsychotic Medication for Delusion in Patients with Alzheimer’s Disease. ALPHA PSYCHIATRY 2021. [DOI: 10.5152/alphapsychiatry.2021.21157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Tomer S, Suh H, Zhou A, Yu B, Lewis J, Saltzman M, Girardi M. 504 Nanoparticle encapsulation enhances stability and efficacy of sunscreen actives. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Lim HJ, Moon E, Suh H, Yang SK, Park JM, Lee BD, Lee YM, Jeong HJ, Kim SY, Lee KY, Yoon M. Psychometric Properties of Behavioral Checklist for Coping with Stress in Patients with Mood Disorders. Psychiatry Investig 2021; 18:147-156. [PMID: 33601872 PMCID: PMC7960753 DOI: 10.30773/pi.2020.0260] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 12/05/2020] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Even though the importance of stress-coping, there is no reliable and valid scale to measure the stress-coping behavior yet. The purpose of this study is to explore the psychometric properties of Behavioral Checklist for Coping with Stress (BCCS). METHODS A total of 458 subjects including healthy subjects and patients with bipolar or depressive disorders were analyzed. The reliability and validity of BCCS were examined by Chronbach's alpha and exploratory factor analysis using Principal Component Analysis. In order to evaluate criterion-related validity, the Pearson's correlation analyses between factors of BCCS and relevant scales were performed. RESULTS BCCS showed good Chronobach's alpha (0.695-0.833) and had acceptable validity. Factor 1 and factor 4 of BCCS were negatively correlated with depression, anxiety and positivity correlated with task and problem-solving, avoidance, tension-releasing copings in common. Factor 2 and 3 were positively correlated with impulsivity, emotionality, avoidance, behavioral and verbal aggression and tension-releasing copings in common. Different from factor 2, factor 3 was positively correlated with depression, anxiety and anger-suppression. CONCLUSION The results of this study suggest that this BCCS might be a reliable and valid scale for measuring stress-coping behaviors. This scale could facilitate research to investigate clinical implications related to behavioral stress-coping.
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Affiliation(s)
- Hyun Ju Lim
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Sun Kyeong Yang
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Je Min Park
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kang Yoon Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Min Yoon
- Department of Applied Mathematics, Pukyung National University, Busan, Republic of Korea
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15
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Kang TU, Moon E, Choi Y, Suh H, Park JM, Lee BD, Lee YM, Jeong HJ, Kim SY, Lee K, Lim HJ, Yoon M. Anger-Related Characteristics According to Chronotypes in Bipolar or Depressive Disorders. Psychiatry Investig 2020; 17:880-888. [PMID: 32894930 PMCID: PMC7538243 DOI: 10.30773/pi.2019.0326] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/29/2020] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Though anger was highly associated with eveningness in general population, there is no study on the relationship between chronotype and anger-related characteristics in bipolar or depressive disorders. This study aimed to investigate the difference of anger-related characteristics according to chronotypes in bipolar or depressive disorders. METHODS Patients with bipolar or depressive disorders (n=238) were included in this study. Their chronotypes and anger-related characteristics were assessed with a self-evaluation of the Composite Scale of Morningness (CSM), the State Trait Anger Expression Inventory (STAXI) and the Anger Coping Scale (ACS). RESULTS The eveningness group in patients with mood disorders showed the highest scores of anger-trait (p<0.001), anger-expression (p=0.002) and anger-in (p<0.001) in STAXI subscales, verbal aggression (p=0.010) in ACS subscales among three groups, but the morningess group showed the lowest scores of these subscales among three groups. However, there were no significant differences in all subscales of the STAXI and ACS according to diagnostic subtypes in the Friedman test. CONCLUSION The results of this study suggested that eveningness in patients with mood disorders might be related to anger proneness and maladaptive anger coping. To manage anger emotion in the patients with mood disorders, therapeutic interventions to modulate eveningness might be helpful.
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Affiliation(s)
- Tae Uk Kang
- Department of Psychiatry, Seoul Metropolitan Eunpyung Hospital, Seoul, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Yoonmi Choi
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Je-Min Park
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Byung-Dae Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Young-Min Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Hee-Jeong Jeong
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kangyoon Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Ju Lim
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Min Yoon
- Department of Applied Mathematics, Pukyung National University, Busan, Republic of Korea
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16
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Kim G, Moon E, Park JM, Lee BD, Lee YM, Jeong HJ, Kim SY, Lee K, Suh H. Various Psychiatric Manifestation in DiGeorge Syndrome (22q11.2 Deletion Syndrome): A Case Report. Clin Psychopharmacol Neurosci 2020; 18:458-462. [PMID: 32702226 PMCID: PMC7383002 DOI: 10.9758/cpn.2020.18.3.458] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 11/20/2022]
Abstract
This case report aimed to describe various psychiatric manifestation and treatment course in a patient with DiGeorge syndrome. Psychiatric symptoms and treatment course in a female patient with DiGeorge syndrome were described. This patient showed psychotic symptoms, mood symptoms, and intellectual disability. As well as various psychiatric symptoms, treatment response and sensitivity of side effect by antipsychotics were different from typical characteristics in psychiatric disorders. This case suggests that the genetic defect in DiGeorge syndrome might have a great association with psychiatric problems and response of antipsychotics.
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Affiliation(s)
- Giok Kim
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Eunsoo Moon
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Je Min Park
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Byung Dae Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Young Min Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Korea
| | - Hee Jeong Jeong
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Kangyoon Lee
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Hwagyu Suh
- Department of Psychiatry, Medical Research Institute, Pusan National University Hospital, Busan, Korea
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17
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Suh H, Kang TU, Moon E, Park JM, Lee BD, Lee YM, Jeong HJ, Kim SY, Lee K, Lim HJ. Similarities and Differences of Strategies between Bipolar and Depressive Disorders on Stress Coping. Psychiatry Investig 2020; 17:71-77. [PMID: 31995974 PMCID: PMC6992857 DOI: 10.30773/pi.2019.0152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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] [Received: 06/20/2019] [Accepted: 10/07/2019] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE As coping strategies can influence the illness course of mood disorder, they could be potential targets for psychological intervention. The current study investigated the similarities and differences in stress coping styles between bipolar disorder (BD) and depressive disorder (DD). METHODS Subjects with BD (n=135) and DD (n=100) who met the DSM-IV diagnostic criteria were included in this analysis. Coping strategies were assessed using the coping inventory for stressful situations and depressive symptoms were assessed by Beck depression inventory. RESULTS The BD group showed significantly more avoidant and task-oriented coping than the DD group (t=2.714, p=0.007; t=2.193, p=0.039). After excluding the effect of the depressive symptoms themselves (by comparing two groups in non-depressive state), the BD group still showed significantly more avoidant and task-oriented coping than the DD group (t=2.040, p=0.045; t=2.556, p=0.013), but when the symptoms of depression get greater, the difference between BD and DD coping strategies were reduced. CONCLUSION Subjects with BD tend to use more task and avoidant coping than DD subjects. But when the symptoms of depression get greater, the difference in coping strategies between BD and DD were reduced.
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Affiliation(s)
- Hwagyu Suh
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Tae Uk Kang
- Department of Psychiatry, Seoul Metropolitan Eunpyeung Hospital, Seoul, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Je Min Park
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kangyoon Lee
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Ju Lim
- Department of Psychiatry and Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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18
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Lee KY, Lee BD, Park JM, Lee YM, Moon E, Jeong HJ, Kim SY, Suh H, Chung YI, Kim SC. Investigation of Maternal Effects, Maternal-Fetal Interactions, and Parent-of-Origin Effects (Imprinting) for Candidate Genes Positioned on Chromosome 18q21, in Probands with Schizophrenia and their First-Degree Relatives. Psychiatry Investig 2019; 16:450-458. [PMID: 31247704 PMCID: PMC6603700 DOI: 10.30773/pi.2019.04.12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 04/12/2019] [Indexed: 12/04/2022] Open
Abstract
OBJECTIVE A popular design for the investigation of such effects, including effects of parent-of-origin (imprinting), maternal genotype, and maternal-fetal genotype interactions, is to collect deoxyribonucleic acid (DNA) from affected offspring and their mothers and to compare with an appropriate control sample. We investigate the effects of estimation of maternal, imprinting and interaction effects using multimodal modeling using parents and their offspring with schizophrenia in Korean population. METHODS We have recruited 27 probands (with schizophrenia) with their parents and siblings whenever possible. We analyzed 20 SNPs of 7 neuronal genes in chromosome 18. We used EMIM analysis program for the estimation of maternal, imprinting and interaction effects using multimodal modeling. RESULTS Of analyzed 20 single nucleotide polymorphisms (SNPs), significant SNP (rs 2276186) was suggested in EMIM analysis for child genetics effects (p=0.0225438044) and child genetic effects allowing for maternal genetic effects (p=0.0209453210) with very stringent multiple comparison Bonferroni correction. CONCLUSION Our results are the pilot study for epigenetic study in mental disorder and help to understanding and use of EMIM statistical genetics analysis program with many limitations including small pedigree numbers.
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Affiliation(s)
- Kang Yoon Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Je Min Park
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young In Chung
- Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Seung Chul Kim
- Department of Obstetrics and Gynecology, Pusan National University Hospital, Busan, Republic of Korea
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19
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Suh H, Lee BD, Park JM, Lee YM, Moon E, Jeong HJ, Kim SY, Lee KY, Chung YI. Heritability and familiality of psychopathologic dimensions in Korean families with schizophrenia. Psychiatry Clin Neurosci 2019; 73:126-131. [PMID: 30588715 PMCID: PMC7199795 DOI: 10.1111/pcn.12817] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/13/2018] [Accepted: 12/25/2018] [Indexed: 11/30/2022]
Abstract
AIM Categorical syndromes such as schizophrenia could be a combination of many continuous mental structure phenotypes including several personality development/degeneration dimensions. This study investigated the heritability and familiality of symptom check list (SCL) psychopathologic dimensions in Korean schizophrenia linkage disequilibrium families. METHOD We recruited 204 probands (with schizophrenia) with their parents and siblings whenever possible. We used the SCL questionnaire to measure psychopathologic dimensions. The heritability of symptomatic dimensions in 543 family members was estimated using Sequential Oligogenic Linkage Analysis Routines (SOLAR). Psychopathologic dimensions in the 543 family members were compared with those in 307 healthy unrelated controls to measure familiality on using analysis of variance (ANOVA) analysis. RESULTS Five of the nine SCL variables were significantly heritable and were included in the subsequent analyses. The three groups (control, unaffected first-degree relative, schizophrenia patient) were found to be significantly different with regard to the expected order of average group scores for all heritable dimensions. CONCLUSION Aberrations in several symptomatic dimensions could contribute to the complexity of schizophrenia syndrome as a result of genetic-environment coaction or interaction in spite of some limitations (recruited family, phenotyping).
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Affiliation(s)
- Hwagyu Suh
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Byung Dae Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Korea
| | - Je Min Park
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Korea
| | - Young Min Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Korea
| | - Hee Jeong Jeong
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Kang Yoon Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Young In Chung
- Department of Psychiatry, Pusan National University College of Medicine, Busan, Korea
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20
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Jeong HJ, Lee BD, Park JM, Lee YM, Moon E, Kim SY, Lee KY, Suh H, Chung YI. Heritability and Familiality of MMPI Personality Dimensions in the Korean Families with Schizophrenia. Psychiatry Investig 2018; 15:1121-1129. [PMID: 30602105 PMCID: PMC6318490 DOI: 10.30773/pi.2018.10.21.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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] [Received: 12/28/2017] [Accepted: 10/21/2018] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE Categorical syndrome such as schizophrenia could be the complex of many continuous mental structure phenotypes including several personality development/degeneration dimensions. This is the study to search heritability and familiality of MMPI personality dimensions in the Korean schizophrenic LD (Linkage Disequilibrium) families. METHODS We have recruited 204 probands (with schizophrenia) with their parents and siblings whenever possible. We have used MMPI questionnaires for measuring personality and symptomatic dimensions. Heritabilities of personality dimensions in total 543 family members were estimated using Sequential Oligogenic Linkage Analysis Routines (SOLAR). Personality dimensions in total family members were compared with those in 307 healthy unrelated controls for measuring the familialities using ANOVA analysis. RESULTS Seven of the 10 MMPI variables were significantly heritable and were included in the subsequent analyses. The three groups (control, unaffected 1st degree relative, case) were found to be significantly different with the expected order of average group scores for all heritable dimensions. CONCLUSION Our results show that the aberrations in several personality dimensions could form the complexity of schizophrenic syndrome as a result of genetic-environment coactions or interactions in spite of some limitations (recruited family, phenotyping).
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Affiliation(s)
- Hee Jeong Jeong
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Je Min Park
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
| | - Soo Yeon Kim
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Kang Yoon Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young In Chung
- Department of Psychiatry, Pusan National University College of Medicine, Busan, Republic of Korea
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21
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Lee BD, Kong JY, Kwon CH, Park JM, Lee YM, Moon E, Jeong HJ, Kim SY, Lee KY, Suh H. A whole exome sequencing study of a Korean proband with idiopathic basal ganglia calcification and its daughter. Medicine (Baltimore) 2018; 97:e12918. [PMID: 30335026 PMCID: PMC6211901 DOI: 10.1097/md.0000000000012918] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Idiopathic basal ganglia calcification (IBGC) is characterized by brain calcification and a wide variety of neurological and psychiatric symptoms. In families displaying an autosomal dominant inheritance pattern, three causative genes have been identified: SLC20A2, PDGFRB, and very recently, PDGFB. While in clinical practice sporadic presentation of IBGC is frequent, well-documented reports of true sporadic occurrences are rare. We report a case of a 61-year-old woman who presented with depressive and dystonic symptoms revealing IBGC. Her 41-year-old daughter was healthy. In the proband, we identified 4 mutations in PDGFB, and 1 exonic mutation in SLC20A2, all of which were absent in the daughter. These mutations may result in a loss-of-function of PDGF-B or SLC20A2, which has been shown to cause IBGC in humans and disrupts the blood-brain barrier in mice resulting in brain calcification. Herein, we present the occurrence of a sporadic patient of IBGC and its causative mutations.
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Affiliation(s)
- Byung Dae Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Ja Young Kong
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Je Min Park
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Soo Yeon Kim
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Kang Yoon Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Hwagyu Suh
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
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Suh H, Lewis J, Fong L, Carlson K, Ramseier J, Saltzman W, Girardi M. 761 Development of a novel broad-spectrum sunscreen via bioadhesive nanoparticle encapsulation of organic UV filters. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Suh H, Flórez-Menéndez Á, de La Torre-Fraga C. A Familial Form of Primary Essential Cutis Verticis Gyrata. Actas Dermosifiliogr 2016; 107:435-7. [PMID: 26829994 DOI: 10.1016/j.ad.2015.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/16/2015] [Accepted: 08/28/2015] [Indexed: 11/16/2022] Open
Affiliation(s)
- H Suh
- Servicio de Dermatología, Complejo Hospitalario Universitario de Pontevedra, Pontevedra, España.
| | - Á Flórez-Menéndez
- Servicio de Dermatología, Complejo Hospitalario Universitario de Pontevedra, Pontevedra, España
| | - C de La Torre-Fraga
- Servicio de Dermatología, Complejo Hospitalario Universitario de Pontevedra, Pontevedra, España
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Suh H, Flórez-Menéndez Á, de La Torre-Fraga C. A Familial Form of Primary Essential Cutis Verticis Gyrata. Actas Dermo-Sifiliográficas (English Edition) 2016. [DOI: 10.1016/j.adengl.2016.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Suh H, Choi K, Rhee H, Bae O, Lee C. 310 The evaluation of anti-cancer activity of three novel carbocyclic pyrrolo[2,3-d]pyrimidine analogs in human prostate cancer LNCaP cells. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30175-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moon E, Suh H, Lee BD, Park JM, Lee YM, Jeong HJ. A case of acute psychosis in a patient following exposure to a single high dose of styrene. Asia Pac Psychiatry 2015; 7:337-8. [PMID: 26184570 DOI: 10.1111/appy.12163] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 10/02/2014] [Indexed: 11/30/2022]
Abstract
We report a case of acute psychotic symptoms following exposure to a single high dose of styrene monomer. The 24-year-old male patient showed psychotic and cognitive symptoms immediately after exposure. His psychotic symptoms included auditory hallucinations and delusions of reference. Brain magnetic resonance imaging, electroencephalography, and laboratory examinations were performed to evaluate any other causes. The clinical, neuroimaging, and laboratory review in this case suggested that the suddenly developed psychotic symptoms that led to chronic deterioration were caused by the single exposure to styrene monomer. This is the first recent report in which acute psychotic symptoms developed from a single high dose of styrene suffocation compared with previous findings showing symptoms because of long-term low-dose exposure.
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Affiliation(s)
- Eunsoo Moon
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hwagyu Suh
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Byung Dae Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Je Min Park
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry, Pusan National University Hospital, Busan, Republic of Korea.,Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea.,Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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An S, Kim S, Kim D, Suh H, Lee K, Lee R. Design and Development of a Practical Scatter Correction System in CBCT. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Transplant renal artery stenosis (TRAS) is a common occurrence following kidney transplantation with an incidence rate ranging from 6% to 23%. A single-center retrospective study was conducted to examine the use of drug-eluting stents (DES) in eligible patients with hemodynamically significant TRAS. Between March 2008 and January 2011, 12 patients were diagnosed with TRAS with reference vessel diameter measuring <5 mm and underwent endovascular intervention (EVI) with DES placement. TRAS was detected within the first year posttransplantation in a majority of these patients (83%) and manifested as hypertension (100%), allograft dysfunction (100%) and edema (58%). Procedural success rate was 100%. Patients were followed for a mean period of 16 ± 10 months. Blood pressure improved from a mean of 156/82 to 138/73 mmHg at the end of the follow-up period. In 11/12 patients, serum creatinine improved from 3.1 ± 1.3 mg/dL to 2.3 ± 0.5 mg/dL at the end of the follow-up period. TRAS of early onset is readily amenable to EVI with stent placement resulting in improvement in blood pressure control and allograft function.
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Affiliation(s)
- M T Abate
- Nephrology Cardiology Department of Medicine and Transplantation Services, School of Medicine, State University of New York, Stony Brook, NY, USA.
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Ren C, Baccarelli A, Wilker E, Suh H, Sparrow D, Vokonas P, Wright R, Schwartz J. Lipid and endothelium-related genes, ambient particulate matter, and heart rate variability--the VA Normative Aging Study. J Epidemiol Community Health 2011; 64:49-56. [PMID: 19602472 DOI: 10.1136/jech.2008.083295] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Many studies have shown that exposures to air pollution are associated with cardiovascular events, although the mechanism remains to be clarified. To identify whether exposures to ambient particles act on autonomic function via the lipid/endothelial metabolism pathway, whether effects of particulate matter <2.5 mum in aerodynamic diameter (PM(2.5)) on heart rate variability (HRV) were modified by gene polymorphisms related to those pathways were evaluated. METHODS HRV and gene data from the Normative Aging Study and PM(2.5) from a monitor located a kilometre from the examination site were used. A mixed model was fitted to investigate the associations between PM(2.5) and repeated measurements of HRV by gene polymorphisms of apolipoprotein E (APOE), lipoprotein lipase (LPL) and vascular endothelial growth factor (VEGF) adjusting for potential confounders chosen a priori. RESULTS A 10 microg/m(3) increase in PM(2.5) in the 2 days before the examination was associated with 3.8% (95% CI 0.2% to 7.4%), 7.8% (95 CI 0.4% to 15.3%) and 10.6% (95% CI 1.8% to 19.4%) decreases of the standard deviation of normal-to-normal intervals, the low frequency and the high frequency, respectively. Overall, carriers of wild-type APOE, LPL and VEGF genes had stronger effects of particles on HRV than those with hetero- or homozygous types. Variations of LPL-N291S, LPL-D9N and APOE-G113C significantly modified effects of PM(2.5) on HRV. CONCLUSION Associations between PM(2.5) and HRV were modified by gene polymorphisms of APOE, LPL and VEGF; the biological metabolism remains to be identified.
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Affiliation(s)
- C Ren
- Exposure, Epidemiology, and Risk Program, Harvard School of Public Health, Landmark Center West, Suite 415, 401 Park Dr, Boston, MA 02215, USA.
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Suh H, Grill-Spector K. The role of local feature processing in face and car detection. J Vis 2010. [DOI: 10.1167/7.9.1036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Suh H, Grill-Spector K. The influence of holistic information on face detection. J Vis 2010. [DOI: 10.1167/5.8.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Choi M, Won H, Lee K, Sung S, Moon B, Choi H, Suh H, Nam E, Lee S. Predictive and prognostic functions of microtubule-associated protein-tau and topoisomerase IIα protein in early breast cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22169 Background: Topoisomerase IIα protein(topo II) is the molecular target of topo II inhibitors such as anthracyclines and Microtubule-Associated Protein(MAP)-tau protein is associated with taxane sensitivity. Anthracyclins and taxanes are major cytotoxic agents of breast cancer in the adjuvant setting. The aim of this study was to evaluate the predictive and prognostic functions of MAP-tau and topo II in early breast cancers. Methods: Representative breast tumor sections were constructed from paraffin embedded specimens from 78 node positive breast cancer patients. MAP-tau and topo II protein were assessed by immunochemistry using antibody clone 4F1(Affinity BioReagents,USA) and clone Ki-S1 antibody(Dakocytomation,USA). MAP-tau staining of tumor cells was semiquantatively scored as 0, 1+, 2+, 3+ and cases with 0 or 1+ staining intensity were considered MAP-tau negative. Topo II protein over- expression was defined as the detection of nuclear staining in more than median value of evaluated cells. Results: Thirty- four cases (43.6%) of 78 samples showed topo II overexpression and 35 cases(44.9%) showed MAP-tau overexpression in node positive breast cancers. HER2 overexpression was noted in 28 samples (35.9%) and 56 cases (71.8%) were compatible with the luminal type. In 43 patients (55.1%), anthracyclin and taxane were used as adjuvant therapy and in this group, both MAP-tau and topo II overexpression showed lower disease-free survival (DFS) than the others, but statistically not significant. In luminal type, MAP-tau overexpression was poor prognostic factor on DFS in Cox regression.(HR 5.644, 95% CI 1.14–28.07, p=0.034) Conclusions: Topo II overexpression and MAP-tau overexpression in node positive breast cancers were not significant predictive factors for anthracyclin and taxane therapies. As several investigators reported, MAP-tau is associated endocrine therapy sensitivity in patients without chemotherapy, but higher MAP-tau in luminal type was a strong poor prognostic factor in patients who were given chemotherapy and hormonal therapy. No significant financial relationships to disclose.
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Affiliation(s)
- M. Choi
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - H. Won
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - K. Lee
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - S. Sung
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - B. Moon
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - H. Choi
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - H. Suh
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - E. Nam
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - S. Lee
- Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
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Park K, Kim A, Woo O, Ryu W, Yoon S, Suh H, Choi I, Suh J, Kim Y, Kim J, Koo B. Infiltration of intratumoral T cells and regulatory T cells are associated with p53 expression and ER status in early breast cancer: a Korean breast cancer study. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-5049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Abstract #5049
Background: Immune responses, such as rich lymphocyte infiltrate, have shown associated with improved clinical outcomes in patients with breast cancer. Recently, number of tumor-infiltrating regulatory T cell has been identified as a poor prognostic marker. There is, however, not enough data evaluating the associations between the clinicopathologic factors and quantity or quality of TILs in Asian breast cancer patients.
 Material and methods: CD4-, CD8-, and Foxp3-positive tumor-infiltrating lymphocytes (TILs) were detected by immunohistochemistry using the paraffin-embedded samples from the 40 patients with early stage (I-III) breast cancer. Expression status of ER, PR, HER-2, p53, and Ki-67 were also evaluated by immunohistochemistry. Clinical data, such as pathologic stage, patient's age, were available for statistical analysis.
 Results: Statistically significant correlation between ER expression and CD8/CD4 ratio of the TILs (Spearman r=0.447, p=0.024) was observed. Other clinicopathlogical factors, such as PR, tumor size, nodal metastasis, tumor grade, did not show significant correlation with ratio of the TILs. Additionally, tumors with more dense accumulation of p53 protein were associated with recruitment of higher number of Foxp3-positive regulatory T cells (Spearman r=0.52, p=0.0002). Ki-67, a proliferation index of the tumor cells, was also statistically significantly associated with infiltration of regulatory T cells (Spearman r=0.46, p=0.019).
 Discussion: Our data showed that ER-positive tumors had higher ratio of CD8/CD4 TILs, which is opposite result from the previous studies. In addition, p53 overexpression and high proliferation index of the breast cancer were associated with high regulatory T cell infiltration, but not with total TIL. The role of the p53 overexpression of the tumor cells in determining immune balance and its prognostic implication will be evaluated in the future study.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 5049.
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Affiliation(s)
- K Park
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - A Kim
- 2 Pathology, Korea University, Seoul, Korea
| | - O Woo
- 3 Radiology, Korea University, Seoul, Korea
| | - W Ryu
- 4 Surgery, Korea University, Seoul, Korea
| | - S Yoon
- 5 Oncology/Hematology, Kunkuk University, Seoul, Korea
| | - H Suh
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - I Choi
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - J Suh
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - Y Kim
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - J Kim
- 1 Oncology/Hematology, Korea University, Seoul, Korea
| | - B Koo
- 4 Surgery, Korea University, Seoul, Korea
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Alexeeff SE, Litonjua AA, Wright RO, Baccarelli A, Suh H, Sparrow D, Vokonas PS, Schwartz J. Ozone exposure, antioxidant genes, and lung function in an elderly cohort: VA normative aging study. Occup Environ Med 2008; 65:736-42. [PMID: 18524839 PMCID: PMC2575239 DOI: 10.1136/oem.2007.035253] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Ozone (O3) exposure is known to cause oxidative stress. This study investigated the acute effects of O(3) on lung function in the elderly, a suspected risk group. It then investigated whether genetic polymorphisms of antioxidant genes (heme oxygenase-1 (HMOX1) and glutathione S-transferase pi (GSTP1)) modified these associations. METHODS 1100 elderly men from the Normative Aging Study were examined whose lung function (forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1)) was measured every 3 years from 1995 to 2005. The study genotyped the GSTP1 Ile105Val and Ala114Val polymorphisms and the (GT)n repeat polymorphism in the HMOX1 promoter, classifying repeats as short (n<25) or long (n> or =25). Ambient O(3) was measured continuously at locations in the Greater Boston area. Mixed linear models were used, adjusting for known confounders. RESULTS A 15 ppb increase in O(3) during the previous 48 h was associated with a 1.25% decrease in FEV(1) (95% CI: -1.96% to -0.54%). This estimated effect was worsened with either the presence of a long (GT)n repeat in HMOX1 (-1.38%, 95% CI: -2.11% to -0.65%) or the presence of an allele coding for Val105 in GSTP1 (-1.69%, 95% CI: -2.63% to -0.75%). A stronger estimated effect of O(3) on FEV(1) was found in subjects carrying both the GSTP1 105Val variant and the HMOX1 long (GT)n repeat (-1.94%, 95% CI: -2.89% to -0.98%). Similar associations were also found between FVC and O(3) exposure. CONCLUSIONS Our results suggest that O(3) has an acute effect on lung function in the elderly, and the effects may be modified by the presence of specific polymorphisms in antioxidant genes.
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Affiliation(s)
- S E Alexeeff
- Stacey E Alexeeff, Exposure, Epidemiology and Risk Program, Harvard School of Public Health, Landmark Center West, 415, 401 Park Dr., Boston, Massachusetts 02215, USA.
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Schwartz J, Litonjua A, Suh H, Verrier M, Zanobetti A, Syring M, Nearing B, Verrier R, Stone P, MacCallum G, Speizer FE, Gold DR. Traffic related pollution and heart rate variability in a panel of elderly subjects. Thorax 2005; 60:455-61. [PMID: 15923244 PMCID: PMC1747419 DOI: 10.1136/thx.2004.024836] [Citation(s) in RCA: 217] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Particulate air pollution has been associated with increased cardiovascular deaths and hospital admissions. To help understand the mechanisms, the types of particles most involved, and the types of persons most susceptible, the association between exposure to summertime air pollution and heart rate variability (HRV) was examined in a panel study of 28 elderly subjects. METHODS Subjects were seen once a week for up to 12 weeks and HRV (SDNN, r-MSSD, PNN50, low frequency/high frequency ratio (LFHFR)) was measured for approximately 30 minutes at each session using a defined protocol. Temperature, day of the week, and hour of the day were controlled, and dummy variables for each subject were controlled for subject specific risk factors. RESULTS PM2.5 was associated with r-MSSD (-10.1% change for an interquartile range (IQR) increase in exposure (95% CI -2.8 to -16.9)) and PNN50, but stronger associations were seen with black carbon, an indicator of traffic particles, which was also associated with SDNN (-4.6% per IQR (95% CI -2.0 to -7.2)) and LFHFR. Secondary particles were more weakly associated with r-MSSD, as was ozone. No associations were seen with SO2 or NO2. CO had similar patterns of association to black carbon, which disappeared after controlling for black carbon. Black carbon had a substantially higher effect on SDNN in subjects who had had a previous myocardial infarction (-12.7%, 95% CI -5.7 to -19.25). CONCLUSIONS Particles, especially from traffic, are associated with disturbances of autonomic control of the heart.
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Affiliation(s)
- J Schwartz
- Department of Environmental Health, Environmental Epidemiology Program, Harvard School of Public Health, 401 Park Drive,P O Box 15677, Landmark Center, Suite 415, Boston, MA 02215, USA.
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Adamkiewicz G, Ebelt S, Syring M, Slater J, Speizer FE, Schwartz J, Suh H, Gold DR. Association between air pollution exposure and exhaled nitric oxide in an elderly population. Thorax 2004; 59:204-9. [PMID: 14985553 PMCID: PMC1746963 DOI: 10.1136/thorax.2003.006445] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Animal models suggest that the cardiovascular effects of air pollution result in part from inflammation caused by proinflammatory mediators originating in the lung. In a human study of the cardiovascular effects of air pollution, we aimed to evaluate the potential association between air pollution levels and the fraction of exhaled nitric oxide (FE(NO)), a non-invasive measure of airway inflammation. METHODS Breath samples were collected weekly between September and December 2000 in a community based group of elderly subjects (median age 70.7 years) in Steubenville, Ohio. The samples were analysed for NO. Air pollution levels were measured concurrently at a central site monitor. RESULTS An increase in the 24 hour average PM(2.5) concentration of 17.7 micro g/m(3) was associated with an increase in FE(NO) of 1.45 ppb (95% CI 0.33 to 2.57) in models adjusted for subject, week of study, day of the week, hour of the day, ambient barometric pressure, temperature, and relative humidity. This represents a change of approximately 15% compared with the mean FE(NO) in the cohort (9.9 ppb). A significant association was also observed for a 24 hour moving average of ambient NO (0.83 ppb increase, 95% CI 0.26 to 1.40). In two-pollutant models, the magnitude and precision of the PM(2.5) effect was not reduced and the ambient NO effect was no longer significant. The associations between FE(NO) and PM(2.5) were significantly higher in subjects with a doctor's diagnosis of COPD (p value for interaction = 0.03). CONCLUSIONS Ambient pollution may lead to airway inflammation as measured by FE(NO). These subclinical inflammatory changes may be an important step in the pathogenesis of the cardiopulmonary effects induced by exposure to air pollution.
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Affiliation(s)
- G Adamkiewicz
- Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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Kong I, Suh H, Yang Z, Burlage R. A bioluminescent reporter strain utilizing the lower pathway promoter (Pm) of the xyl operon of Pseudomonas: optimization of a bioassay for m-toluate. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/s1093-0191(03)00037-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Park YH, Han DW, Suh H, Ryu GH, Hyon SH, Cho BK, Park JC. Protective effects of green tea polyphenol against reactive oxygen species-induced oxidative stress in cultured rat calvarial osteoblast. Cell Biol Toxicol 2003; 19:325-37. [PMID: 14703119 DOI: 10.1023/b:cbto.0000004986.51081.c5] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [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: 11/12/2022]
Abstract
The injurious effects of reactive oxygen species on osteoblasts and the potential protective role played by green tea polyphenols (GtPP) were investigated using primarily cultured rat calvarial osteoblasts. Oxidative stress was induced in cultured osteoblasts, either by adding 100 mmol/L H2O2 or by the action of 40 U/L xanthine oxidase (XO) in the presence of xanthine (250 micromol/L). After incubation, the cellular viability, function and morphology were evaluated. Both treatments produced a significant reduction in osteoblast viability, as assessed by a two-colored fluorescence staining method combined with flow cytometric analysis and MTT assay. A significant reduction in the alkaline phosphatase activity was observed after H2O2 addition, whereas XO did not have the same effect. On the microscopic observations, the morphological changes and intracellular ultrastructural damages were remarkably induced by both treatments. The H2O2-induced alterations were prevented by pre-incubating the osteoblasts with 200 microg/ml GtPP for 1 h. When the oxidative stress was induced by XO, the cellular viability and morphology was also maintained at the same polyphenol concentration. These results demonstrate that GtPP can act as a biological antioxidant in a cell culture experimental model and protect cells from oxidative stress-induced toxicity.
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Affiliation(s)
- Y H Park
- Department of Medical Engineering, Cardiovascular Research Institute, Yonsei University College of Medicine Seoul, Korea
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Lee RJ, Suh H. Design and characterization of an intracavitary ultrasound hyperthermia applicator for recurrent or residual lesions in the vaginal cuff. Int J Hyperthermia 2003; 19:563-74. [PMID: 12944170 DOI: 10.1080/02656730310001608002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 10/26/2022] Open
Abstract
For evaluating the feasibility of treating recurrent lesions in the vaginal cuff by hyperthermia, a 2-element ultrasound applicator was designed, constructed and characterized. A half-cylindrical transducer (d=1 cm, length=1 cm) was used to construct the 2-element ultrasound applicator. Each element of this applicator was operated at 1.5 MHz and characterized by measuring transducer efficiency and acoustic power distribution. Thermocouple probes were used to measure the temperature rise in the phantom. The element sizes used in this study were selected to be comparable to a high dose rate brachytherapy colpostat applicator. Each element was powered separately to achieve a desired temperature pattern in a target. The acoustic output power as a function of applied electric power of elements 1 and 2 were linear over this 1-40 W range and efficiencies were 32.2 +/- 3.4% and 46.2 +/- 0.8%, respectively. The temperature measurements in the phantom showed that a 6 degrees C temperature rise was achieved 2 cm from the applicator surface. As a conclusion, the ability of the ultrasound colpostat applicator to be used for hyperthermia was demonstrated by measuring acoustic output power, ultrasound field distribution and temperature rise in the phantom. Based on the characteristics of this applicator, it has the potential to be useful for inducing hyperthermia to the vaginal cuff in the clinic.
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Affiliation(s)
- R J Lee
- Department of Radiation Oncology, Ewha Womans University Mokdong Hospital, Seoul, Korea.
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Abstract
One of the differences between fetal and adult skin healing is the ability of fetal wounds heal without contraction and scar formation. Extracellular matrix (ECM) provides a substratum for cells adhesion, migration, and proliferation and can directly influence the form and function of cells. As motility is essential for many important biological events, including wound healing, inflammatory response, embryonic development, and tumor metastasis, this study was designed to compare the motilities cultured dermal fetal and neonatal fibroblasts in the extracellular matrix. The motility of cultured fetal and neonatal fibroblasts was compared using a video-microscopy system that was developed in combination with a self-designed CO2 mini-incubator. To determine migration speed, cells were viewed with a 4X phase-contrast lens and video recorded. Images were captured using a color CCD camera and saved in 8-bit full-color mode. We found that cultured fetal fibroblasts move faster than neonatal fibroblast on type I collagen (fetal fibroblast, 15.1 micrometer/hr; neonatal fibroblast, 13.7 micrometer/hr), and in fibronectin (fetal fibroblast, 13.2 micrometer/hr; neonatal fibroblast, 13.0 micrometer/hr) and hyaluronic acid (fetal fibroblast, 11 micrometer/hr; neonatal fibroblast, 9.8 micrometer/hr).
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Affiliation(s)
- J C Park
- Department of Plastic and Reconstructive Surgery and Institute for Human Tissue Restoration, Yonsei University College of Medicine, C.P.O. Box 8044, Seoul 120-752, Korea
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41
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Lee E, Vershvovsky Y, Miller F, Waltzer W, Suh H, Nord EP. Combined medical surgical therapy for pulmonary mucormycosis in a diabetic renal allograft recipient. Am J Kidney Dis 2001; 38:E37. [PMID: 11728997 DOI: 10.1053/ajkd.2001.29293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/11/2022]
Abstract
Mucormycosis is a rare opportunistic infection that complicates chronic debilitating diseases and immunosuppressed solid-organ transplant recipients. We present a case of life-threatening pulmonary mucormycosis in a diabetic renal allograft recipient who survived with reasonable renal function. Early recognition of this entity and prompt use of bronchoalveolar lavage (BAL) are critical to the outcome. Antifungal therapy combined with early surgical excision of infected, necrotic tissue appears to be the preferred course of action. Judicious withholding of immunosuppressants until fungemia cleared did not jeopardize allograft function.
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Affiliation(s)
- E Lee
- Division of Nephrology, Department of Medicine, School of Medicine, State University of New York at Stony Brook, Stony Brook, NY 11794, USA
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Cha YS, Choi SK, Suh H, Lee SN, Cho D, Li K. Effects of carnitine coingested caffeine on carnitine metabolism and endurance capacity in athletes. J Nutr Sci Vitaminol (Tokyo) 2001; 47:378-84. [PMID: 11922111 DOI: 10.3177/jnsv.47.378] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/27/2022]
Abstract
The purpose of this study was to examine whether caffeine (CAF), carnitine (CAR), or CAF+CAR mixture administration affects exercise endurance time via carnitine metabolism. Water (CON), CAF, CAR, or CAF+CAR mixture was administered to five male rugby athletes participating in this study by a randomized double-blind fashion who were made to ride a cycle ergometer for exercise. The CAF effect on exercise endurance time was small, but the CAR trial significantly increased the exercise endurance time compared with CON trial; a further CAF+CAR mixture trial had greater effects on the exercise endurance time than those of a CON, CAF, or CAR trial. A CAR or CAF+CAR mixed trial increased urinary nonesterified carnitine (NEC) and total carnitine (TCAR), but no changes were observed in acid-soluble acylcarnitine (ASAC) and acid-insoluble acylcarnitine (AIAC) excretion. A CAR or CAF+CAR mixed trial resulted in higher levels of plasma NEC, ASAC, and TCAR fractions than the CON and CAF trials did on exhaustion time. Total cholesterol, triglyceride, and free fatty acid in blood were significantly increased at exhaustion time, but they were not affected in the CAF or the CAR trial. These results suggest that carnitine ingestion could promote fat oxidation, resulting in higher endurance performance in athletes, and especially these ergogenic effects of carnitine coingested with caffeine may be greater than those of carnitine alone.
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Affiliation(s)
- Y S Cha
- Department of Food and Nutritional Science, Chonbuk National University, Chonju, Korea
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43
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Abstract
PURPOSE The aim of this study is to extend our previous studies to investigate the TerplexDNA synthetic gene carrier system in pharmacokinetics, biodistribution, and gene expression in major organs after systemic administration. METHODS The stability of the TerplexDNA system was analyzed in vitro with a serum incubation assay. The TerplexDNA PK/PD studies were conducted by quantitation of Terplex/radiolabeled DNA [CTP alpha-32P] complexes after rat-tail vein injection. The effect of the TerplexDNA system on gene expression in mouse major organs was analyzed by measuring luciferase activities after systemic administration. RESULTS The TerplexDNA gene carrier showed significantly longer retention in the vascular space than naked plasmid DNA alone. At early time points (1 h postvenous injection), the lung was the major organ of the TerplexDNA distribution, followed by the liver as a major distribution organ at later time points (24 h postinjection). The major organs of transgene expression after intravenous injection were the liver and heart. CONCLUSION The TerplexDNA system has the potential for in vivo applications due to its higher bioavailability of plasmid DNA in the tissues, and due to its organ specific distribution.
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Affiliation(s)
- L Yu
- Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City 84112, USA
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44
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Abstract
The effects of centrifugal force on growth and differentiation of osteoblastic cells cultured in alpha-MEM containing 1% Fetal bovine serum were investigated by assays of DNA synthesis, alkaline phosphatase activity and osteocalcin-production in osteoblastic MC3T3-E1 cells. Centrifugation of the cells in low concentrations (1%) of fetal bovine serum caused a 1.9-fold increase of [3H]thymidine incorporation on day 3 from the start of centrifugation, and gradually decreased with culture up to day 9. Alkaline phosphatase activity was not affected by centrifugal force until day 5, and increased rapidly after day 7. Stimulation of DNA synthesis by centrifugation was abolished in the presence of H-7, an inhibitor of protein kinase C. These results suggest that centrifugal force stimulates the proliferation of osteoblastic cells through an autocrine secretion of some diffusable growth- promoting activity. Additional centrifugation of the cells also slightly stimulated alkaline phosphatase activity, although this did not directly influence the cell's osteocalcin-production activity.
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Affiliation(s)
- D H Lee
- Department of Medical Engineering, Yonsei University College of Medicine, C.P.O. Box 8044, Seoul 120-752, Korea
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45
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Lee DH, Park JC, Suh H. Synergistic induction of cyclooxygenase-II by bacterial lipopolysaccharide in combination with particles of medical device materials in a murine macrophage cell line J774A.1. J Biomed Mater Res 2001; 55:547-53. [PMID: 11288083 DOI: 10.1002/1097-4636(20010615)55:4<547::aid-jbm1048>3.0.co;2-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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
Corrosion and wear of implanted medical devices may produce particulate debris, leading to acute and chronic inflammatory responses in the host. In the presence of biomaterial wear particles, host monocytes/macrophages are activated to synthesize or secrete mediators of inflammation. In order to understand the mechanisms underlying the host response to particulates and device-associated infections, we have focused on the effects of medical device particles on macrophage function, because these cells play a pivotal role in the body's response to foreign bodies and their interaction with other cellular components of the immune system. In order to evaluate the effects of particles of medical device materials on functional activities of macrophages, we developed a cyclooxygenase-II (COX-II) assay system using J774A.1 macrophages. Constitutive cyclooxygenase (COX-I) is present in cells under physiological conditions, whereas inducible COX-II is induced by some cytokines, mitogens, and endotoxin, presumably in pathological conditions such as inflammation. We have evaluated the inductive effects of implant materials, i.e., particles of polymethylmethacrylate (PMMA), hydroxyapatite (HA), titanium oxide, and silica, on the activity of COX-II using thin layer chromatography of prostaglandin D(2) (PGD(2)) formed from [1-(14)C]-labeled arachidonic acid (AA). Also, we have assessed the synergistic effects of these particles on lipopolysaccharide (LPS)-mediated macrophage activation. Addition of LPS to these particles increased PGD(2) production several-fold greater than the addition of any inducer alone. Our results indicated that device-associated infections could enhance inflammatory responses to the wear particles in subjects with medical implants or in whom particulate biomaterials are used for clinical purposes. The use of this model COX-II assay system may lead to the identification of inflammatory potentials for implant materials more specifically than present in vivo assays.
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Affiliation(s)
- D H Lee
- Department of Medical Engineering, College of Medicine, Yonsei University, 134, Shinchon-dong, Seodaemun-ku, Seoul 120-752, Korea
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46
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Abstract
Polytetrafluoroethylene (PTFE), polyurethane (PU) and silicone are widely known biocompatible polymers which are commonly used for vascular grafts. However, in vitro and in vivo calcifications of these polymers have been found to seriously compromise their quality as biomaterials. In consideration of this problem, the present study compared the calcification rate and extent of PTFE, PU and silicone. Using the in vitro flow-type method, PTFE, PU and silicone films were tested for 1, 4, 7, 10, 14 and 21 days. After 21 days of in vitro calcification test, the calcium levels on PTFE, PU and silicone were 35.89 +/- 5.01 microg/cm2, 23.73 +/- 0.68 microg/cm2 and 19.86 +/- 5.28 microg/cm2, respectively. The higher observed calcium level for PTFE may be due to the effect of the rough surface of PTFE in accumulating calcium ions on the polymer surface. From the 7th day of test, the [Ca]/[P] molar ratio started to decrease over time, and PTFE showed a faster calcification process. This decreasing [Ca]/[P] molar ratio demonstrated the typical calcification mechanism consisting of phosphorus ion accumulation following calcium ion accumulation. This study concluded that PU and silicone are less calcified than PTFE film, a finding in good agreement with previously published studies.
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Affiliation(s)
- J C Park
- Department of Medical Engineering, Yonsei University, College of Medicine, Seoul, Korea
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47
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Abstract
Bone inducing agent (BIA) isolated from Saos-2 human osteosarcoma cells was added to an artificial bone substitute composed of 980 degrees C-heated carbonate apatite (CAp) and Type I atelocollagen (AtCol) extracted from bovine tail skins (88/12 in wt/wt %), and a CAp-AtCol-BIA substitute was prepared as an osteoinductive bone substitute. Rat calvaria osteoblasts treated by the isolated BIA demonstrated significantly increased alkaline phosphatase (ALP) activity after 3 days (p < 0.05). In vitro cell attachment and proliferation and ALP activity were investigated for the bone substitute combined with BIA. Osteoblasts cultured onto the surface of the CAp-AtCol-BIA substitute demonstrated remarkable morphological changes such as radial spreading, flattening, and projecting filopodia after 5 days. In comparison with the substitute without BIA, osteoblasts grown in the BIA-combined CAp-AtCol substitute expressed significantly increased proliferation and ALP activity, respectively (p < 0.05). Both the substitutes combined with and without BIA were implanted into artificial defects created in rabbit radii. After 4 weeks, the CAp-AtCol-BIA substitute implanted lesion was completely replaced by regenerated host bone in radiological observation whereas the substitute without BIA was partially resorbed. No histologic abnormalities appeared in the substitute either with or without BIA.
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Affiliation(s)
- H Suh
- Department of Medical Engineering and Department of Orthopedic Surgery, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-ku, Seoul 120-752, Korea.
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48
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Abstract
Hyaluronan (HA), a natural glycoaminoglycan featuring an extracellular matrix, has been suggested as an effective biocompatible material. In this study, the effectiveness of HA microparticles as a carrier system for antibiotics was evaluated, and their physicochemical characteristics were determined. Microparticles were fabricated by the gelation of sulfadiazine (SD) loaded HA solution with calcium chloride through either a granulation (GR-microparticles) or encapsulation (EN-microparticles) process, and atelocollagen was incorporated into the microparticles as an additive in order to improve their physical properties. The characteristics of the microparticles were examined by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and swelling test. In vitro release experiments were performed for 7 days and the released amount of SD was determined using high-performance liquid chromatography (HPLC). Microscopic observations revealed that the collagen incorporated HA particles had a more compact surface than the HA particles. DSC analysis determined a loss of SD crystallinity in the particles. Calcium chloride retarded the swelling of particles, whereas the loaded drug contents did not affect this property. Both GR-and EN-microparticles sustained SD release with initial bursting effect. SD release from EN-microparticles was faster than from GR-microparticles. In addition, the release rate was dependent on the SD content in the microparticles. These results suggest that collagen modified HA microparticles have a potential as a release rate controlling material for crystalline drugs such as SD.
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Affiliation(s)
- J E Lee
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea
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49
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Lee RJ, Suh H. Development of semi-empirical model for radiochemical reactions. J Korean Med Sci 2001; 16:283-9. [PMID: 11410687 PMCID: PMC3054737 DOI: 10.3346/jkms.2001.16.3.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A mathematical model, which represents the radio-chemical reactions in water, was developed to study the effect of the radio-chemical products on cell killing. The five differential equations were solved using dose rate equation and cell survival as a function of dose was computed. The known chemical rate constants were taken from the literature and unknown constants were determined by curve fitting to an experimental data. Sensitivity studies were performed by varying the rate constants and showed that the yield of H-radical had little effect whereas the change in concentration of OH-radical and direct interaction resulted in significant change on cell survival. The sensitivity studies showed good agreement with the observed effects. In conclusion, we developed a mathematical model that could be used as a means for the estimation of radiation damage.
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Affiliation(s)
- R J Lee
- Department of Radiation Oncology, Ewha Womans University Mokdong Hospital, Seoul, Korea.
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50
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Abstract
Pretreatment of tissue by using antibiotics is a critical step to prevent microbial contamination before venous transplantation. In this study, the optimal time and temperature of antibiotic solution treatment for maintaining cellular viability with antibacterial effect were investigated. The antibiotic-nutrient solutions were composed of cefoxitin, lincomycin, vancomycin, and polymyxin B in RPMI-1640 medium. After various antibiotic solution treatment times (4, 8, and 12 h) and temperatures (4, 25, and 37 degrees C), the viabilities of cells dissociated from veins (jugular vein, femoral vein, superior vena cava, and inferior vena cava) were determined. Double staining by Griffonia simplicifolia agglutins-fluorescein isothiocyanate (GS1-FITC) and propidium iodide was used. To measure the antibacterial effect of the antibiotic solution, canine veins were artificially infected by 3 kinds of bacteria (Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae) and were treated by antibiotic solutions as viability test conditions. After the treatment with the antibiotic solution, the tissue was minced, and the homogenized tissue fraction was cultured on standard method agar. The colony that seemed to be resistant to the antibiotic solution was counted. At 37 and 25 degrees C, the viability of whole cells decreased significantly Asymptotic Significance 2-tailed (Asymp.Sig 2-tailed) < 0.05 after 4 h of antibiotic solution treatment, whereas at 4 degrees C it began to reduce significantly after 8 h of treatment. By antibiotic solution treatment at all 3 temperatures for 4 h, no significant difference in viability of the endothelial cells and whole cells was observed. To maintain the donor vein's cellular viability until transplantation, antibiotic solution treatment for 4 h at 4 degrees C is assumed to be appropriate.
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Affiliation(s)
- J C Park
- Department of Medical Engineering, Yonsei University College of Medicine, 134, Shinchon-dong, Seodaemun-ku, Seoul 120-752, Korea.
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