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da Cruz Rodrigues KC, Kim SC, Uner AA, Hou ZS, Young J, Campolim C, Aydogan A, Chung B, Choi A, Yang WM, Kim WS, Prevot V, Caldarone BJ, Lee H, Kim YB. LRP1 in GABAergic neurons is a key link between obesity and memory function. Mol Metab 2024; 84:101941. [PMID: 38636794 PMCID: PMC11058729 DOI: 10.1016/j.molmet.2024.101941] [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: 06/16/2023] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/20/2024] Open
Abstract
OBJECTIVE Low-density lipoprotein receptor-related protein-1 (LRP1) regulates energy homeostasis, blood-brain barrier integrity, and metabolic signaling in the brain. Deficiency of LRP1 in inhibitory gamma-aminobutyric acid (GABA)ergic neurons causes severe obesity in mice. However, the impact of LRP1 in inhibitory neurons on memory function and cognition in the context of obesity is poorly understood. METHODS Mice lacking LRP1 in GABAergic neurons (Vgat-Cre; LRP1loxP/loxP) underwent behavioral tests for locomotor activity and motor coordination, short/long-term and spatial memory, and fear learning/memory. This study evaluated the relationships between behavior and metabolic risk factors and followed the mice at 16 and 32 weeks of age. RESULTS Deletion of LRP1 in GABAergic neurons caused a significant impairment in memory function in 32-week-old mice. In the spatial Y-maze test, Vgat-Cre; LRP1loxP/loxP mice exhibited decreased travel distance and duration in the novel arm compared with controls (LRP1loxP/loxP mice). In addition, GABAergic neuron-specific LRP1-deficient mice showed a diminished capacity for performing learning and memory tasks during the water T-maze test. Moreover, reduced freezing time was observed in these mice during the contextual and cued fear conditioning tests. These effects were accompanied by increased neuronal necrosis and satellitosis in the hippocampus. Importantly, the distance and duration in the novel arm, as well as the performance of the reversal water T-maze test, negatively correlated with metabolic risk parameters, including body weight, serum leptin, insulin, and apolipoprotein J. However, in 16-week-old Vgat-Cre; LRP1loxP/loxP mice, there were no differences in the behavioral tests or correlations between metabolic parameters and cognition. CONCLUSIONS Our findings demonstrate that LRP1 from GABAergic neurons is important in regulating normal learning and memory. Metabolically, obesity caused by GABAergic LRP1 deletion negatively regulates memory and cognitive function in an age-dependent manner. Thus, LRP1 in GABAergic neurons may play a crucial role in maintaining normal excitatory/inhibitory balance, impacting memory function, and reinforcing the potential importance of LRP1 in neural system integrity.
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Affiliation(s)
- Kellen Cristina da Cruz Rodrigues
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Seung Chan Kim
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Aaron Aykut Uner
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Zhi-Shuai Hou
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Jennie Young
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Clara Campolim
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Ahmet Aydogan
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Brendon Chung
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Anthony Choi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Won-Mo Yang
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Woojin S Kim
- The University of Sydney, Brain and Mind Centre & School of Medical Sciences, Sydney, NSW, Australia
| | - Vincent Prevot
- University of Lille, Inserm, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, Lille, France
| | - Barbara J Caldarone
- Mouse Behavior Core, Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Hyon Lee
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Young-Bum Kim
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA.
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Park SH, Kim BJ, Kim JH, Kim SC, Kim RB, Han YS. Incidence rates of retinal vascular occlusive diseases from 2011 to 2020 in South Korea: a nationwide cohort study. BMC Ophthalmol 2024; 24:128. [PMID: 38519990 PMCID: PMC10958970 DOI: 10.1186/s12886-024-03397-7] [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] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 03/14/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Retinal vascular occlusions, including retinal vein occlusion and retinal artery occlusion, are common causes of visual impairment. In order to evaluate the national medical burden and help improve ophthalmic health care policy planning, we investigated the incidence of retinal vascular occlusive diseases from 2011 to 2020 in Korea. METHODS This study is a nationwide population-based retrospective study using data from the Korea national health claim database of the Health Insurance Review and Assessment (HIRA) service. We identified retinal vascular occlusive diseases registered from January 1, 2009, to December 31, 2020, according to the retinal vascular occlusion code (H34) and its sub-codes from international classification of disease, tenth revision diagnosis code. We used data from the entire Korean population based on the 2015 census of the population in Korea to calculate standardized incidence rates. RESULTS We identified 348,775 individuals (male, 161,673 [46.4%]; female, 187,102 [53.6%]) with incident retinal vascular occlusion (H34), 10,451 individuals (males, 6,329 [60.6%]; females, 4,122 [39.4%]) with incident central retinal artery occlusion (H34.1), and 252,810 individuals (males, 114,717 [45.4%]; females, 138,093 [54.6%]) with incident retinal vein occlusion (H34.8) during the 10-year study period. The weighted mean incidence rate of retinal vascular occlusion was 70.41 (95% CI, 70.18-70.65) cases/100,000 person-years. The weighted mean incidence rate of central retinal artery occlusion was 2.10 (95% CI, 2.06-2.14) cases/100,000 person-years. The weighted mean incidence rate of retinal vein occlusion was 50.99 (95% CI, 50.79-51.19) cases/100,000 person-years. CONCLUSION The total retinal vascular occlusion and retinal vein occlusion showed a decreasing trend until 2020. However, the central retinal artery occlusion decreased until 2014 and remained stable without a significant further decline until 2020. The incidence of total retinal vascular occlusion and retinal vein occlusion was higher in females than in males, while the incidence of central retinal artery occlusion was higher in males. All retinal vascular occlusive diseases showed an increasing incidence with older age; the peak age incidence was 75-79 years for total retinal vascular occlusion and retinal vein occlusion, and 80-85 years for central retinal artery occlusion.
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Affiliation(s)
- Shin Hyeong Park
- Department of Ophthalmology, Gyeongsang National University Changwon Hospital, #11 Samjeongja-ro, Seongsan- gu, Changwon, 51472, Korea
| | - Bum Jun Kim
- Department of Ophthalmology, Gyeongsang National University Changwon Hospital, #11 Samjeongja-ro, Seongsan- gu, Changwon, 51472, Korea
| | - Ji Hye Kim
- Department of Ophthalmology, Gyeongsang National University Changwon Hospital, #11 Samjeongja-ro, Seongsan- gu, Changwon, 51472, Korea
| | - Seung Chan Kim
- Department of Biostatistics, Clinical Trial Center, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Rock Bum Kim
- Regional Cardiocerebrovascular Disease Center, Gyeongsang National University Hospital, Jinju, Korea
- Department of Preventive Medicine, Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Yong Seop Han
- Department of Ophthalmology, Gyeongsang National University Changwon Hospital, #11 Samjeongja-ro, Seongsan- gu, Changwon, 51472, Korea.
- Department of Ophthalmology, College of Medicine, Gyeongsang National University, Jinju, Korea.
- Gyeongsang Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.
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Kim SC, Mitchell SJ, Qamar S, Whitcomb DJ, Ruepp MD, St George-Hyslop P, Cho K. Mimicking hypomethylation of FUS requires liquid-liquid phase separation to induce synaptic dysfunctions. Acta Neuropathol Commun 2023; 11:199. [PMID: 38105257 PMCID: PMC10726623 DOI: 10.1186/s40478-023-01703-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023] Open
Abstract
The hypomethylation of fused in sarcoma (FUS) in frontotemporal lobar degeneration promotes the formation of irreversible condensates of FUS. However, the mechanisms by which these hypomethylated FUS condensates cause neuronal dysfunction are unknown. Here we report that expression of FUS constructs mimicking hypomethylated FUS causes aberrant dendritic FUS condensates in CA1 neurons. These hypomethylated FUS condensates exhibit spontaneous, and activity induced movement within the dendrite. They impair excitatory synaptic transmission, postsynaptic density-95 expression, and dendritic spine plasticity. These neurophysiological defects are dependent upon both the dendritic localisation of the condensates, and their ability to undergo liquid-liquid phase separation. These results indicate that the irreversible liquid-liquid phase separation is a key component of hypomethylated FUS pathophysiology in sporadic FTLD, and this can cause synapse dysfunction in sporadic FTLD.
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Affiliation(s)
- Seung Chan Kim
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Scott J Mitchell
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Seema Qamar
- Department of Clinical Neurosciences, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, CB2 0XY, UK
| | | | - Marc-David Ruepp
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Peter St George-Hyslop
- Department of Clinical Neurosciences, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, CB2 0XY, UK
- Department of Medicine (Division of Neurology), University Health Network and Tanz Centre for Research In Neurodegenerative Diseases, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, M5S 3H2, Canada
- Taub Institute For Research On Alzheimer's Disease and the Aging Brain, Department of Neurology, Columbia University Irving Medical Center, 630 West 168 Street, New York, NY, 10032, USA
| | - Kwangwook Cho
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK.
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Lee SY, Park SJ, Gim JA, Kang YJ, Choi SH, Seo SH, Kim SJ, Kim SC, Kim HS, Yoo JI. Correlation between Harris hip score and gait analysis through artificial intelligence pose estimation in patients after total hip arthroplasty. Asian J Surg 2023; 46:5438-5443. [PMID: 37316345 DOI: 10.1016/j.asjsur.2023.05.107] [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] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/01/2023] [Accepted: 05/23/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND Recently, open pose estimation using artificial intelligence (AI) has enabled the analysis of time series of human movements through digital video inputs. Analyzing a person's actual movement as a digitized image would give objectivity in evaluating a person's physical function. In the present study, we investigated the relationship of AI camera-based open pose estimation with Harris Hip Score (HHS) developed for patient-reported outcome (PRO) of hip joint function. METHOD HHS evaluation and pose estimation using AI camera were performed for a total of 56 patients after total hip arthroplasty in Gyeongsang National University Hospital. Joint angles and gait parameters were analyzed by extracting joint points from time-series data of the patient's movements. A total of 65 parameters were from raw data of the lower extremity. Principal component analysis (PCA) was used to find main parameters. K-means cluster, X-squared test, Random forest, and mean decrease Gini (MDG) graph were also applied. RESULTS The train model showed 75% prediction accuracy and the test model showed 81.8% reality prediction accuracy in Random forest. "Anklerang_max", "kneeankle_diff", and "anklerang_rl" showed the top 3 Gini importance score in the Mean Decrease Gini (MDG) graph. CONCLUSION The present study shows that pose estimation data using AI camera is related to HHS by presenting associated gait parameters. In addition, our results suggest that ankle angle associated parameters could be key factors of gait analysis in patients who undergo total hip arthroplasty.
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Affiliation(s)
- Sang Yeob Lee
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
| | - Seong Jin Park
- Department of Hospital-based Business Innovation Center, Gyeongsang National University Hospital, Jinju, South Korea
| | - Jeong-An Gim
- Medical Science Research Center, College of Medicine, Korea University, Seoul, South Korea
| | - Yang Jae Kang
- Division of Life Science Department, Gyeongsang National University, Jinju, South Korea
| | - Sung Hoon Choi
- Division of Bio & Medical Big Data Department (BK4 Program), Gyeongsang National University, Jinju, South Korea
| | - Sung Hyo Seo
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
| | - Shin June Kim
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea
| | - Seung Chan Kim
- Department of Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, South Korea
| | - Hyeon Su Kim
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea
| | - Jun-Il Yoo
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea.
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Lim E, Kim BJ, Lee CS, Cha B, Lee SJ, Seo JY, Choi JW, Lee YJ, Kang N, Kim SC, Lee D. Dietary Carotene Intake and Suicidal Ideation in Korean Females: Analysis of Data From the Korea National Health and Nutrition Examination Survey (2012, 2013, and 2015). Psychiatry Investig 2023; 20:897-903. [PMID: 37899212 PMCID: PMC10620338 DOI: 10.30773/pi.2022.0259] [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: 09/12/2022] [Revised: 11/06/2022] [Accepted: 11/16/2023] [Indexed: 10/31/2023] Open
Abstract
OBJECTIVE The suicide rate in Korea was the highest among countries in the Organisation for Economic Co-operation and Development in 2019. In a previous study, higher intake of vegetables and fruits was associated with a lower risk of suicidal ideation, and carotene-rich fruits and vegetables lowered the risk of depression. This study aimed to examine the direct relationship between carotene intake and suicidal ideation, adjusting for the effect on depression. METHODS This study used data from the Korea National Health and Nutrition Examination Survey (KNHANES) conducted in 2012, 2013, and 2015. Carotene intake was assessed through a food intake frequency survey with a 24-hour recall. Suicidal ideation and depression were assessed using the mental health section of the KNHANES. We applied logistic regression to assess the relationship between carotene intake and suicidal ideation, adjusting for potential confounders. RESULTS A total of 5,480 females aged 19-64 years were included in this study. Carotene intake was significantly lower in the suicidal ideation group (3,034.5±1,756.4 μg/day) than in the nonsuicidal ideation group (3,225.4±1,795.1 μg/day) (p=0.015). We found a significant inverse association between carotene intake and the risk of suicidal ideation after adjusting for potential confounders (odds ratio=0.934, 95% confidence interval=0.873-0.999). CONCLUSION These results suggest that carotene intake may be inversely associated with the risk of suicidal ideation. Our findings may inform the development of new nutritional interventions to prevent increases in the risk of suicide worldwide.
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Affiliation(s)
- Eunji Lim
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
| | - Bong-Jo Kim
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
- Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Cheol-Soon Lee
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
| | - Boseok Cha
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
- Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - So-Jin Lee
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
- Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Ji-Yeong Seo
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - Jae-Won Choi
- Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Young-Ji Lee
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
| | - Nuree Kang
- Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Dongyun Lee
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
- Department of Psychiatry, Gyeongsang National University, College of Medicine, Jinju, Republic of Korea
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Gim JA, Lee SY, Kim SC, Baek KW, Seo SH, Yoo JI. Relationship between DNA methylation changes and skeletal muscle mass. BMC Genom Data 2023; 24:48. [PMID: 37653517 PMCID: PMC10472633 DOI: 10.1186/s12863-023-01152-3] [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] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 08/16/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Sarcopenia is a disease diagnosed in the elderly. In patients with sarcopenia, the muscle mass decreases every year. The occurrence of sarcopenia is greatly affected by extrinsic factors such as eating habits, exercise, and lifestyle. The present study aimed to determine the relationship between muscle mass traits and genes affected by epigenetic factors with three different adjustment methods using Korean Genome and Epidemiology Study (KOGES) data. RESULTS We conducted a demographic study and DNA methylation profiling by three studies according to the muscle mass index (MMI) adjustment methods: appendicular skeletal muscle mass divided by body weight (MMI1); appendicular skeletal muscle mass divided by square of height (MMI2); appendicular skeletal muscle mass divided by BMI (MMI3). We analyzed differentially methylated regions (DMRs) for each group. We then restricted our subjects to be top 30% (T30) and bottom 30% (B30) based on each MMI adjustment method. Additionally, we performed enrichment analysis using PathfindR to evaluate the relationship between identified DMRs and sarcopenia. A total of 895 subjects were included in the demographic study. The values of BMI, waist, and hip showed a significant difference in all three groups. Among 446 participants, 44 subjects whose DNA methylation profiles were investigated were included for DNA methylation analysis. The results of enrichment analysis showed differences between groups. In the women group through MMI1 method, only the glutamatergic synapse pathway showed a significant result. In the men group through MMI2 method, the adherens junction pathway was the most significant. Women group through MMI2 method showed similar results, having an enriched Rap1 signaling pathway. In men group through MMI3 method, the Fc epsilon RI signaling pathway was the most enriched. Particularly, the notch signaling pathway was significantly enriched in women group through MMI3 method. CONCLUSION This study presents results about which factor should be concerned first in muscle mass index (MMI) adjustment. The present study suggested that GAB2 and JPH3 in MMI1 method, HLA-DQB1 and TBCD in MMI2 method, GAB2, NDUFB4 and ISPD in MMI3 method are potential genes that can have an impact on muscle mass. It could enable future epigenetic studies of genes based on annotation results. The present study is a nationwide study in Korea with the largest size up to date that compares adjustment indices for MMI in epigenetic research.
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Affiliation(s)
- Jeong-An Gim
- Department of Medical Science Research Center, College of Medicine, Korea University, Seoul, South Korea
| | - Sang-Yeob Lee
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Seung Chan Kim
- Department of Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, South Korea
| | - Kyung-Wan Baek
- Department of Physical Education, Gyeongsang National University, Jinju, South Korea
- Department of Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, South Korea
| | - Sung Hyo Seo
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
| | - Jun-Il Yoo
- Department of Orthopaedic Surgery, Inha University Hospital, 27 Inhang-ro, Jung-gu, Incheon, 22332, Republic of Korea.
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Raikwar MM, Kim SC, Sun J, Chu C, Lee JY. Highly Efficient Phosphorescent Organic Light-Emitting Diodes Using Benzo[4',5']imidazo[2',1':2,3]imidazo[4,5,1- jk]carbazole as a Rigid and Effective Electron Acceptor in Bipolar Host. ACS Appl Mater Interfaces 2023; 15:40809-40816. [PMID: 37584658 DOI: 10.1021/acsami.3c08099] [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] [Indexed: 08/17/2023]
Abstract
A novel bipolar host architecture was investigated to improve the external quantum efficiency (EQE) of green phosphorescent organic light-emitting diodes (PhOLEDs). The host was developed by incorporating carbazole as a hole-transport unit and fused rigid benzo[4',5']imidazo[2',1':2,3]imidazo[4, 5, 1-jk]carbazole (BzICz) as a new electron transport unit. The primary goal of the BzICz-based host design was to achieve a high triplet energy and bipolar charge transport characteristics. The green PhOLEDs fabricated using the new BzICz and carbazole-based host demonstrated a high EQE of 26.6% due to their high triplet energy and good bipolar charge transporting characteristics.
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Affiliation(s)
- Manish Mannulal Raikwar
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Republic of Korea
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Republic of Korea
| | - Jinwon Sun
- Materials Research Team, Display Research Center, Samsung Display, Yongin, Gyeonggi 17102, Republic of Korea
| | - Changwoong Chu
- Materials Research Team, Display Research Center, Samsung Display, Yongin, Gyeonggi 17102, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi 440-746, Republic of Korea
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, Republic of Korea
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Lee HL, Kang J, Lim J, Kim SC, Jeon SO, Lee JY. Hybridization of short-range and long-range charge transfer excited states in multiple resonance emitter. Nat Commun 2023; 14:4818. [PMID: 37558680 PMCID: PMC10412604 DOI: 10.1038/s41467-023-40481-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/28/2023] [Indexed: 08/11/2023] Open
Abstract
Multiple resonance (MR) thermally activated delayed fluorescence emitters have been actively studied as pure blue dopants for organic light-emitting diodes (OLEDs) because of excellent color purity and high efficiency. However, the reported MR emitter, 2,5,13,16-tetra-tert-butylindolo[3,2,1-jk]indolo[1',2',3':1,7]indolo[2,3-b]carbazole (tDIDCz) based on bis-fused indolocarbazole framework could not demonstrate efficient triplet-to-singlet spin crossover. In this work, we report two isomeric MR emitters designed to promote triplet exciton harvesting by reconstructing the electronic structure of tDIDCz. To manage excited states, strong electron donors were introduced at the 2,5-/1,6-position of tDIDCz. As a result, 2,5-positions managed tDIDCz shows long-range charge transfer characteristics while preserving the MR nature. Quantum chemical calculation demonstrates direct spin-orbit coupling by long-range charge transfer and spin-vibronic coupling assisted reverse intersystem crossing by short-range charge transfer simultaneously contribute to triplet-to-singlet spin crossover. Consequently, high performance blue OLED recorded a high external quantum efficiency of 30.8% at a color coordinate of (0.13, 0.13).
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Affiliation(s)
- Ha Lim Lee
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Jihoon Kang
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea
| | - Junseop Lim
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea
| | - Soon Ok Jeon
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea.
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Korea.
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea.
- SKKU Institute of Energy Science and Technology, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea.
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Yun SY, Choi YJ, Chung SR, Suh CH, Kim SC, Lee JH, Baek JH. Image findings of anti-neutrophil cytoplasmic antibody-associated vasculitis involving the skull base. Clin Radiol 2023; 78:e568-e573. [PMID: 37164808 DOI: 10.1016/j.crad.2023.04.004] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 02/02/2023] [Accepted: 04/05/2023] [Indexed: 05/12/2023]
Abstract
AIM To investigate computed tomography (CT) and magnetic resonance imaging (MRI) features of skull bases involving anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV). MATERIALS AND METHODS A retrospective review was undertaken to identify an institutional historical cohort of 17 patients with confirmed AAV who underwent CT or MRI and had skull base involvement between 2002 and 2021. Two radiologists reviewed the extent and features of the lesions, bone changes, and other MRI findings. RESULTS A total of 17 patients (12 men; mean age ± standard deviation, 46.5 ± 17.1 years) were selected. AAV presented as infiltrative lesions with involvement at various sites. Most cases involved the paranasal sinuses (PNS; 88%, 15/17), nasopharynx (88%, 15/17), pterygopalatine fossa (82%, 14/17), and parapharyngeal space (82%, 14/17), frequently accompanied by mucosal irregularity of the PNS and nasopharynx (71%, 12/17). Central skull base and temporal bone involvement were seen in 53% (9/17) and 38% (6/16) of cases, respectively. On T1-weighted imaging (WI) and T2WI MRI, all lesions (15/15) showed predominant signal iso-intensity to grey matter. CONCLUSIONS Although radiological findings of AAV are non-specific and skull base involvement is less common, AAV may be considered if infiltrative lesions predominantly involving the PNS, nasopharynx, pterygopalatine fossa, and parapharyngeal space with combined bone changes of skull base are seen.
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Affiliation(s)
- S Y Yun
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea
| | - Y J Choi
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - S R Chung
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C H Suh
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S C Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Lee
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Baek
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Lee SY, Kim SC, Gim JA, Park SJ, Seo SH, Kim SJ, Kim HS, Yoo JI. Accelerometer-derived physical activity analysis of elderly osteoarthritis patients. Musculoskelet Sci Pract 2023; 66:102808. [PMID: 37352763 DOI: 10.1016/j.msksp.2023.102808] [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: 03/14/2023] [Revised: 06/12/2023] [Accepted: 06/15/2023] [Indexed: 06/25/2023]
Abstract
BACKGROUND Because disability in Osteoarthritis (OA) may change physical activity (PA), which might affect the disease progression, it is important to measure a patient's daily PA to study the relationship between a patient's PA and disease progression. OBJECTIVE The objective of the present study was to investigate the relationship between PA and patients with OA and people without OA using data from the Korea National Health and Nutrition Examination Survey (KNHANES). METHODS Demographic study was conducted to obtain data of comorbidities of participants. PA was compared between the group with OA (OA group) and the group without OA (non-OA group). In addition, PAs of OA patients with comorbidities and those without comorbidities were compared. The cut-off of moderate to vigorous physical activity (MVPA) was obtained through a receiver operating characteristic (ROC) curve. RESULTS In the demographic study, there were significantly more educated participants in the OA group (p < .001). Actigraph data showed a significant decrease in MVPA (p < .001) but a significant increase in light activity (p = .002) in the OA group. In addition, the OA group showed significantly lower light PA but significantly higher MVPA in ≥10 min bout length. OA patients with comorbidities showed higher MVPA than OA patients without comorbidities (p = .044). The cut-off point of MVPA was 7.071 min/day when ROC curve was conducted. CONCLUSIONS The present study suggests that patients with OA and low activity need a certain level of physical activity and a cut-off point for MVPA is presented which accounts for comorbidities in OA patients.
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Affiliation(s)
- Sang-Yeob Lee
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
| | - Seung Chan Kim
- Department of Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, South Korea
| | - Jeong-An Gim
- Department of Medical Science Research Center, College of Medicine, Korea University, Seoul, South Korea
| | - Seong Jin Park
- Department of Hospital-based Business Innovation Center, Gyeongsang National University Hospital, Jinju, South Korea
| | - Sung Hyo Seo
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, South Korea
| | - Shin June Kim
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea
| | - Hyeon Su Kim
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea
| | - Jun-Il Yoo
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, South Korea.
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Lee S, Kim YJ, Kim Y, Kang D, Kim SC, Kim SY. Incidence rates of injury, musculoskeletal, skin, pulmonary and chronic diseases among construction workers by classification of occupations in South Korea: a 1,027 subject-based cohort of the Korean Construction Worker's Cohort (KCWC). Ann Occup Environ Med 2023; 35:e26. [PMID: 37614337 PMCID: PMC10442585 DOI: 10.35371/aoem.2023.35.e26] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 05/23/2023] [Accepted: 06/12/2023] [Indexed: 08/25/2023] Open
Abstract
Background The objective of this study is to investigate the differences in incidence rates of targeted diseases by classification of occupations among construction workers in Korea. Methods In a subject-based cohort of the Korean Construction Worker's Cohort, we surveyed a total of 1,027 construction workers. As occupational exposure, the classification of occupations was developed using two axes: construction business and job type. To analyze disease incidence, we linked survey data with National Health Insurance Service data. Eleven target disease categories with high prevalence or estimated work-relatedness among construction workers were evaluated in our study. The average incidence rates were calculated as cases per 1,000 person-years (PY). Results Injury, poisoning, and certain other consequences of external causes had the highest incidence rate of 344.08 per 1,000 PY, followed by disease of the musculoskeletal system and connective tissue for 208.64 and diseases of the skin and subcutaneous tissue for 197.87 in our cohort. We especially found that chronic obstructive pulmonary disease was more common in construction painters, civil engineering welders, and civil engineering frame mold carpenters, asthma in construction painters, landscape, and construction water proofers, interstitial lung diseases in construction water proofers. Conclusions This is the first study to systematically classify complex construction occupations in order to analyze occupational diseases in Korean construction workers. There were differences in disease incidences among construction workers based on the classification of occupations. It is necessary to develop customized occupational safety and health policies for high-risk occupations for each disease in the construction industry.
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Affiliation(s)
- Seungho Lee
- Department of Occupational and Environmental Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Yoon-Ji Kim
- Department of Preventive, and Occupational & Environmental Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Youngki Kim
- Department of Occupational and Environmental Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea
- Department of Preventive, and Occupational & Environmental Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Dongmug Kang
- Department of Occupational and Environmental Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea
- Department of Preventive, and Occupational & Environmental Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Seung Chan Kim
- Department of Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Korea
| | - Se-Yeong Kim
- Department of Occupational and Environmental Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea
- Department of Preventive, and Occupational & Environmental Medicine, School of Medicine, Pusan National University, Yangsan, Korea
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Kim J, Wang V, Kim SC, Lee JY, Javey A. A Color-Tunable Alternating Current Organic Light Emitting Capacitor. Nano Lett 2023. [PMID: 37310291 DOI: 10.1021/acs.nanolett.3c01827] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We demonstrate an alternating current (AC) driven light emitting capacitor in which the color of the emission spectra can be changed via an applied AC frequency. The device has a simple metal-oxide-semiconductor (MOS) capacitor structure with an organic emissive layer, enabling facile fabrication processing. The organic emissive layer comprises a thin, submonolayer low energy dye layer underneath a thick host matrix (∼30 nm) with higher energy emitting dyes. The emission of the lower energy dyes dominates at low frequency, while the higher energy emission of the host matrix dominates at high frequency. This simple color tunable device could be used for full-color displays and lighting in the future.
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Affiliation(s)
- Jongchan Kim
- Department of Electrical Engineering and Computer Sciences, UC Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Vivian Wang
- Department of Electrical Engineering and Computer Sciences, UC Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyoenggi 16419, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyoenggi 16419, Republic of Korea
| | - Ali Javey
- Department of Electrical Engineering and Computer Sciences, UC Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Son JY, Han JH, Kim SC, Choi WS, Hong HJ. Korean adolescent suicide and search volume for "self-injury" on internet search engines. Front Psychiatry 2023; 14:1186754. [PMID: 37346904 PMCID: PMC10279855 DOI: 10.3389/fpsyt.2023.1186754] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/17/2023] [Indexed: 06/23/2023] Open
Abstract
Introduction Many adolescents with suicidal ideation receive support through the Internet. However, they also find ways to attempt suicide or strengthen their suicidal ideation through this medium. This study analyzed the association between the search volume of suicide-related terms and the number of suicides among Korean adolescents. We also analyzed the correlations between the search volumes of suicide-related terms. Methods We selected seven words (suicide, self-injury, depression, academic score, school violence, outcasts, and family trouble) related to adolescent suicide. A dataset was constructed by combining data from the most commonly used search engine in Korea (Naver Datalab) and the daily number of adolescent suicides in school settings (n = 347) from January 1, 2016 to December 31, 2018, collected from the Ministry of Education. Poisson regression and Pearson correlation analyses were performed. Results Significant associations were found between suicide attempts and search term volumes, which differed according to sex and time interval. Among the search terms, "self-injury" was most strongly associated with suicide, and this association was significant at all time intervals (daily, weekly, and monthly) in female adolescents and in the total population. Further, the association was strongest in the daily suicide data. More search term volumes were related to suicide in the daily and weekly data than in the monthly data. There were positive correlations between "suicide," "self-injury," and "depression" search volumes. Conclusion Further studies with larger sample sizes, more search terms, and analysis of time intervals between suicide-related term search and suicide death are required. These studies can contribute to the establishment of an online suicide prevention system to detect suicide risk in adolescents and provide interventions.
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Affiliation(s)
- Jin Yeong Son
- Department of Psychiatry, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Jun Hee Han
- Department of Psychiatry, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang, Republic of Korea
| | - Seung Chan Kim
- Department of Biostatistics, Clinical Trial Center, Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Won-Seok Choi
- Department of Psychiatry, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Ju Hong
- Department of Psychiatry, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
- Hallym University Suicide and School Mental Health Institute, Anyang, Republic of Korea
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Kim H, Cho D, Kim H, Kim SC, Lee JY, Kang Y. Development of Blue Phosphorescent Pt(II) Materials Using Dibenzofuranyl Imidazole Ligands and Their Application in Organic Light-Emitting Diodes. Materials (Basel) 2023; 16:ma16114159. [PMID: 37297296 DOI: 10.3390/ma16114159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Organic light-emitting diodes (OLEDs) are energy-efficient; however, the coordinating ligand can affect their stability. Sky-blue phosphorescent Pt(II) compounds with a C^N chelate, fluorinated-dbi (dbi = [1-(2,4-diisopropyldibenzo [b,d]furan-3-yl)-2-phenyl-1H-imidazole]), and acetylactonate (acac) (1)/picolinate (pic) (2) ancillary ligands were synthesized. The molecular structures were characterized using various spectroscopic methods. The Pt(II) Compound Two exhibited a distorted square planar geometry, with several intra- and inter-molecular interactions involving Cπ⋯H/Cπ⋯Cπ stacking. Complex One emitted bright sky-blue light (λmax = 485 nm) with a moderate photoluminescent quantum efficiency (PLQY) of 0.37 and short decay time (6.1 µs) compared to those of 2. Theoretical calculations suggested that the electronic transition of 1 arose from ligand(C^N)-centered π-π* transitions combined with metal-to-ligand charge-transfer (MLCT), whereas that of 2 arose from MLCT and ligand(C^N)-to-ligand(pic) charge-transfer (LLCT), with minimal contribution from C^N chelate to the lowest unoccupied molecular orbital (LUMO). Multi-layered phosphorescent OLEDs using One as a dopant and a mixed host, mCBP/CNmCBPCN, were successfully fabricated. At a 10% doping concentration of 1, a current efficiency of 13.6 cdA-1 and external quantum efficiency of 8.4% at 100 cdm-2 were achieved. These results show that the ancillary ligand in phosphorescent Pt(II) complexes must be considered.
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Affiliation(s)
- Hakjo Kim
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Dain Cho
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Haein Kim
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Youngjin Kang
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
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Kothavale S, Kim SC, Cheong K, Zeng S, Wang Y, Lee JY. Solution-Processed Pure Red TADF Organic Light-Emitting Diodes With High External Quantum Efficiency and Saturated Red Emission Color. Adv Mater 2023; 35:e2208602. [PMID: 36653735 DOI: 10.1002/adma.202208602] [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: 09/19/2022] [Revised: 12/29/2022] [Indexed: 06/17/2023]
Abstract
In spite of recent research progress in red thermally activated delayed fluorescence (TADF) emitters, highly efficient solution-processable pure red TADF emitters are rarely reported. Most of the red TADF emitters reported to date are designed using a rigid acceptor unit which renders them insoluble and unsuitable for solution-processed organic light-emitting diodes (OLEDs). To resolve this issue, a novel TADF emitter, 6,7-bis(4-(bis(4-(tert-butyl)phenyl)amino)phenyl)-2,3-bis(4-(tert-butyl)phenyl)quinoxaline-5,8-dicarbonitrile (tBuTPA-CNQx) is designed and synthesized. The highly twisted donor-acceptor architecture and appropriate highest occupied molecular orbital/lowest unoccupied molecular orbital distribution lead to a very small singlet-triplet energy gap of 0.07 eV, high photoluminescence quantum yield of 92%, and short delayed fluorescence lifetime of 52.4 µs. The peripheral t-butyl phenyl decorated quinoxaline acceptor unit and t-butyl protected triphenylamine donor unit are proven to be useful building blocks to improve solubility and minimize the intermolecular interaction. The solution-processed OLED based on tBuTPA-CNQx achieves a high external quantum efficiency (EQE) of 16.7% with a pure red emission peak at 662 nm, which is one of the highest EQE values reported till date in the solution-processed pure red TADF OLEDs. Additionally, vacuum-processable OLED based on tBuTPA-CNQx exhibits a high EQE of 22.2% and negligible efficiency roll-off.
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Affiliation(s)
- Shantaram Kothavale
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Kiun Cheong
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Songkun Zeng
- School of Materials Science & Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou, 213164, P. R. China
| | - Yafei Wang
- School of Materials Science & Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Changzhou University, Changzhou, 213164, P. R. China
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
- SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
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Gim JA, Lee S, Kim SC, Baek KW, Yoo JI. Demographic and Genome Wide Association Analyses According to Muscle Mass Using Data of the Korean Genome and Epidemiology Study. J Korean Med Sci 2022; 37:e346. [PMID: 36573383 PMCID: PMC9792260 DOI: 10.3346/jkms.2022.37.e346] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/26/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Sarcopenia is commonly found in the elderly due to a decline in muscle mass. Many researchers have performed genome-wide association studies (GWAS) to find genetic risk factors of sarcopenia. Although many studies have discovered sarcopenia associated single nucleotide polymorphisms (SNPs), most of them are studies targeting Caucasians. The purpose of this study was to evaluate genetic correlation according to muscle mass in middle aged Koreans using data of the Korean Genome and Epidemiology Study (KOGES), a large population-based genomic cohort study. METHODS Baseline participants were 10,030 subjects aged 40 to 69 years who were from Ansan or Anseong in Gyeonggi-do, South Korea. Among them, 9,351 subjects with laboratory data available were included in this study. To identify sarcopenia associated variants, those in the top 30% and bottom 30% of muscle mass index (MMI) were compared. A total of 7,452 people with an MMI of 30-70% were excluded. A total of 1,004 people were also excluded due to missing data. Finally, 895 people were selected for this study. The Korea Biobank Array generated 500,568 SNPs for this dataset. RESULTS When subjects were divided into top 30% and bottom 30% of MMI, the top 30% had 169 men and 308 women and the bottom 30% had 220 men and 198 women. In men, age, body mass index (BMI), waist and hip were significantly (P < 0.005) different between top 30% and bottom 30% MMI groups. In women, age, BMI, waist, hip, and hypertension history were significantly different between the two MMI groups. There were 13 significant SNPs in men and 14 significant SNPs in women. Genes associated with variants in men based on the single-nucleotide polymorphism database (dbSNP) were LRP1B containing rs11679458 and RGS6 containing rs11848300. A gene associated with variants in women was Pi4K2A, which contained rs1189312 as a variant. In addition, rs11189312 was associated with expression quantitative trait loci (eQTL) of ZFYVE27 in skeletal muscles and other SNPs of ZFYVE27 (rs10882883, rs17108378, rs35077384) known to be associated with spastic paraplegia. The eQTL analysis revealed that rs11189312 was a variant associated with SNPs of ZFYVE27. CONCLUSIONS In the demographic study, significant results were found in BMI, waist, hip, history of hyperlipidemia, and sedentary life status in male group, and significant results were found in BMI, waist, hip, and hypertension history in female group. Variant rs11189312 was found to be a novel variant affecting ZFYVE27 expressed in skeletal muscles, suggesting that rs11189312 might be related to sarcopenia as a novel discovery of this study. Further study is needed to determine the association between sarcopenia and ZFYVE27 known to be associated with spastic paraplegia.
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Affiliation(s)
- Jeong-An Gim
- Medical Science Research Center, College of Medicine, Korea University, Seoul, Korea
| | - Sangyeob Lee
- Department of Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, Korea
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Seung Chan Kim
- Department of Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Korea
| | - Kyung-Wan Baek
- Department of Physical Education, Gyeongsang National University, Jinju, Korea
- Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Korea
| | - Jun-Il Yoo
- Department of Orthopaedic Surgery, Gyeongsang National University Hospital, Jinju, Korea.
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Kim M, Hong KW, Kim SC, Kim RB, Cho MC. Analysis of Clinical Characteristics and Laboratory Data Related to the Prognosis of Korean Severe Fever with Thrombocytopenia Syndrome Patients: A Single-Center Study. Vector Borne Zoonotic Dis 2022; 22:559-567. [DOI: 10.1089/vbz.2022.0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Mutbyul Kim
- Department of Laboratory Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Kyung-Wook Hong
- Division of Infectious Diseases, Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Rock Bum Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
- Department of Preventive Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Min-Chul Cho
- Department of Laboratory Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
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Kim J, Kim SC, Kang D, Yon DK, Kim JG. Classification of Alzheimer's disease stage using machine learning for left and right oxygenation difference signals in the prefrontal cortex: a patient-level, single-group, diagnostic interventional trial. Eur Rev Med Pharmacol Sci 2022; 26:7734-7741. [PMID: 36394721 DOI: 10.26355/eurrev_202211_30122] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
OBJECTIVE Recent evidence shows that indicators testing conventional olfactory function have a high degree of similarity to cognitive function tests and the potential to diagnose early-stage Alzheimer's disease (AD). In this study, the efficacy of functional near-infrared spectroscopy time-series data obtained through olfactory stimulation was investigated as an early diagnostic tool for mild cognitive impairment in AD using random forest, a machine learning algorithm. PATIENTS AND METHODS We conducted a patient-level, single-group, diagnostic interventional trial using near-infrared signals measured during olfactory stimulation in the prefrontal cortex of 178 older adults ranging from normal to participants with AD as markers to discriminate AD stages. We first divided the participants into normal older adults, AD mild cognitive impairment, and AD groups using dementia diagnostic criteria such as the Mini-Mental State Examination and Seoul Neuropsychological Screening Battery. We compared the left and right oxygenation difference by calculating the relative oxygenation difference from the change in relative oxygen concentration. RESULTS A total of 168 participants met the eligibility criteria: 70 (41.6%) had normal cognitive function; 42 (25%) mild cognitive impairment; 21 (12.5%) mild AD; and 35 (20.8%) moderate AD. A random forest machine learning model was developed to predict the AD stage, with an area under the receiver operating characteristic curve of 90.7% for mild cognitive impairment and AD, 90.99% for mild cognitive impairment, and 93.34% for AD only. CONCLUSIONS Based on the classification of the oxygenation difference index of the left and right prefrontal cortices during olfactory stimulation through machine learning, we found that it was possible to detect early-stage mild cognitive impairment in AD. Our results highlight the potential for early AD diagnosis using near-infrared signals from the prefrontal cortex obtained upon olfactory stimulation. Moreover, the results showed high similarity to the existing cognitive function tests and high accuracy in AD stage classification.
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Affiliation(s)
- J Kim
- Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, South Korea.
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Kang Y, Kim H, Hong S, Kim SC, Lee JY. Novel Blue-Phosphorescent Platinum(II) Ternary Complexes with β-Diketonate with Fluorinated Phenylimidazole for Organic Light-Emitting Diodes. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0191] [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: 11/22/2022]
Abstract
In this study, the one-pot synthesis of two novel Pt(II) β-diketonate compounds, viz. Pt(tpim)(O^O) (<b>1</b>) and Pt(mtpim)(O^O) (<b>2</b>) (tpim = 1-([1,1<sup>′</sup>:3<sup>′</sup>,1<sup>″</sup>-terphenyl]-2<sup>′</sup>-yl)-2-(4-fluorophenyl)-1H-imidazole, mtpim = 2-(4-fluorophenyl)-1-(5<sup>′</sup>-methyl-[1,1<sup>′</sup>:3<sup>′</sup>, 1<sup>″</sup>-terphenyl]-2<sup>′</sup>-yl)-1H-imidazole, and O^O = acetylacetonato) was achieved. Both compounds had a distorted square-planar geometry without direct intermolecular Pt(II)…Pt(II) interactions, which was attributed to the bulky terphenyl group of the C^N chelate as well as strong intermolecular Pt(II)---H(terphenyl/imidazole) interaction. Compounds <b>1</b> and <b>2</b> exhibited bright sky-blue-phosphorescent emission with a λ<sub>max</sub> = 490 nm and photoluminescence quantum yields (PLQYs) of 0.50 and 0.47, respectively. The time-dependent density functional theory (TD-DFT) calculations revealed that the electronic transitions of both compounds were attributed to the combination of intra-ligand charge transfer [ILCT, π(phenylimidazole)–π*(terphenyl)] and ligand-to-ligand charge transfer [LLCT, π(acac)–π*(terphenyl)], in addition to a contribution from the metal-to-ligand charge transfer [MLCT, Ptd–π*(terphenyl)]. Compounds <b>1</b> and <b>2</b>, as the dopants, and 3′-di(9H-carbazol-9-yl)-1,1′-biphenyl(mCBP):9-(3'-Carbazol-9-yl-5-cyano-biphenyl-3-yl)-9H-carbazole-3-carbonitrile(CNmCBPCN), as the mixed host, were used to fabricate multilayer phosphorescent organic light-emitting diodes. Compound <b>1</b> doped in the emissive layer at a 10% doping level demonstrated a maximum current efficiency of 21.7 cd/A at 100 cd/m<sup>2</sup>.
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Affiliation(s)
- Yongjin Kang
- Kangwon National University, Science Education, Chuncheon, Korea (the Republic of),
| | - Hakjo Kim
- Kangwon National University, Science Education, Chuncheon, Gangwon-do, Korea (the Republic of)
| | - Seungyeon Hong
- Kangwon National University, Chuncheon, Gangwon-do, Korea (the Republic of)
| | - Seung Chan Kim
- Sungkyunkwan University College of Natural Science, School of Chemical Engineering, Suwon, Korea (the Republic of)
| | - Jun Yeob Lee
- Sungkyunkwan University College of Natural Science, Suwon, Korea (the Republic of)
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20
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Lee HL, Jeon SO, Kim I, Kim SC, Lim J, Kim J, Park S, Chwae J, Son WJ, Choi H, Lee JY. Multiple-Resonance Extension and Spin-Vibronic-Coupling-Based Narrowband Blue Organic Fluorescence Emitters with Over 30% Quantum Efficiency. Adv Mater 2022; 34:e2202464. [PMID: 35762112 DOI: 10.1002/adma.202202464] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Achieving narrow-bandwidth emission and high external quantum efficiency (EQE) simultaneously is a challenge for next-generation blue-emitting organic light-emitting diodes (OLEDs). In this study, novel multiple-resonance thermally activated delayed fluorescence (MR-TADF) emitters are developed by fusing an indolocarbazole unit with two carbazole skeletons using para-oriented nitrogen atoms. The resulting rigid and planar π-system without electron-accepting atoms exhibits pure blue photoluminescence at 470 nm, reaching a 100% quantum yield with a full-width-at-half-maximum (FWHM) of 25 nm. Higher-level quantum chemistry calculations confirm an MR effect within the extended π-conjugation and an enhanced triplet-to-singlet crossover (104 s-1 ) through a reduced energy gap (ΔEST ) coupled with large spin-vibronic coupling mediated by low-lying triplet excited states. An OLED fabricated using the MR-TADF emitter with CIE color coordinates of (0.12, 0.16) exhibits a record high EQE of 30.9% and a small FWHM of 23 nm. With further optimization of the device structure, a high EQE of 33.8% is achieved without additional outcoupling enhancements owing to the near-perfect horizontal alignment of the emitting dipoles.
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Affiliation(s)
- Ha Lim Lee
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Soon Ok Jeon
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Inkoo Kim
- Innovation Center, Samsung Electronics, Hwaseong, 18448, Republic of Korea
| | - Seung Chan Kim
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Junseop Lim
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Joonghyuk Kim
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Sangho Park
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Jun Chwae
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Won-Joon Son
- Innovation Center, Samsung Electronics, Hwaseong, 18448, Republic of Korea
| | - Hyeonho Choi
- Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Suwon, Gyeonggi, 16678, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Republic of Korea
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21
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Ragupathy S, Priyadharsan A, AlSalhi MS, Devanesan S, Guganathan L, Santhamoorthy M, Kim SC. Effect of doping and loading Parameters on photocatalytic degradation of brilliant green using Sn doped ZnO loaded CSAC. Environ Res 2022; 210:112833. [PMID: 35150712 DOI: 10.1016/j.envres.2022.112833] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
Sn doped ZnO loaded cotton stalk activated carbon (Sn-ZnO/CSAC) was prepared by chemical precipitation method, and the products were characterized. The XRD resultants confirm that the presence of hexagonal wurtzite phase of the bare ZnO. Furthermore, particular particle size gradually decreases (21.49 nm) due to doping and loading. UV-Vis absorption intensity of doped/loaded sample was red-shifted and then PL intensity is reduced. The photocatalytic performances of bare, Sn-doped ZnO and Sn-ZnO/CSAC was estimated by photodegradation of brilliant green (BG) under sunlight. The photodegradation of BG dye in 120 min over Sn-doped ZnO/CSAC is nearly 96.52%, which is considerably improved than bare ZnO (72.60%), respectively.
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Affiliation(s)
- S Ragupathy
- Department of Physics, E.R.K. Arts and Science College, Erumiyampatti, Dharmapuri, 636 905, Tamil Nadu, India.
| | - A Priyadharsan
- Department of Physics, E.R.K. Arts and Science College, Erumiyampatti, Dharmapuri, 636 905, Tamil Nadu, India.
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - Sandhanasamy Devanesan
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - L Guganathan
- Department of Physics, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - M Santhamoorthy
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38544, Republic of Korea
| | - S C Kim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38544, Republic of Korea.
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22
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Hong JK, Kim DOY, Shin JS, Ryu YS, Moon JH, Koh DI, Lee S, Lee J, Lee WJ, Lee EY, Jung SA, Kim SC, Yu HN, Kim MJ, Hong SW, Park SS, Jung J, Kim SM, Kim EH, Jeong HR, Gong JH, Kim J, Kim TW, Jin DH. CJ14939, a Novel JAK Inhibitor, Increases Oxaliplatin-induced Cell Death Through JAK/STAT Pathway in Colorectal Cancer. Anticancer Res 2022; 42:1813-1819. [PMID: 35346999 DOI: 10.21873/anticanres.15657] [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] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/06/2022] [Accepted: 02/11/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Colorectal cancer is reported to have the highest mortality rate among human malignancies. Although many research results for the treatment of colorectal cancer have been reported, there is no suitable treatment when resistance has developed. Therefore, it is necessary to develop new therapeutic agents. Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling plays an essential role in cell differentiation, proliferation, and survival. Abnormal activation of the JAK/STAT signaling pathway, by gene mutation or amplification, may induce cancer development, and sustained JAK/STAT activation is involved in chemoresistance. While many therapeutic agents have been developed to treat colon cancer, there remains no drug to overcome resistance to chemotherapies. The purpose of this study was to determine the potential of CJ14939 as a novel JAK inhibitor for the treatment of colorectal cancer. MATERIALS AND METHODS In this study, cell culture, cell death assay, 3- (4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium assay, colony formation assay, immunoblot analysis and tumor xenograft were applied. RESULTS CJ14939 induced cell death, and inhibited phosphorylation of JAK1 and STAT3 in colorectal cancer cells. Furthermore, CJ14939 also promoted oxaliplatin-induced cell death, up-regulated expression of cleaved caspase-3, and down-regulated expression of phospho-JAK1 and phospho-STAT3. In vivo, co-treatment with CJ14939 and oxaliplatin notably reduced tumor growth when compared with CJ14939 or oxaliplatin treatment alone. CONCLUSION This study identifies the important potential of CJ14939 in colorectal cancer treatment and suggests that combining CJ14939 with oxaliplatin might be a novel therapeutic strategy for patients with colorectal cancer.
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Affiliation(s)
- Jun Ki Hong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - DO Yeon Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Sik Shin
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Yea Seong Ryu
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jai-Hee Moon
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Dong-In Koh
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Seul Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jinwoo Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Won Jun Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Eun Young Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Soo-A Jung
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Ha Na Yu
- CJ HealthCare R&D Center, Icheon-si, Republic of Korea
| | - Mi Jin Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung-Woo Hong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Sang Soo Park
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Joonyee Jung
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Seung Mi Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Eun Ho Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hong-Rae Jeong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea.,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ji Hee Gong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Jieun Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Tae Won Kim
- Department of Oncology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong-Hoon Jin
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; .,Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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23
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Cho MC, Cho IA, Seo HK, Kang MJ, Jo JY, Shin JK, Lee SA, Kim SC, Kim RB, Choi WJ. Serum vitamin D-binding protein (VDBP) concentration and rs7041 genotype may be associated with preterm labor. J Matern Fetal Neonatal Med 2022; 35:9422-9429. [PMID: 35188037 DOI: 10.1080/14767058.2022.2040475] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE Vitamin D deficiency is common during pregnancy and may cause complications such as preterm labor (PTL). This study was aimed to investigate the effect of the vitamin D-binding protein (VDBP) rs7041 genotype, which has a significant effect on vitamin D metabolism and PTL. METHODS This cross-sectional study was conducted with 32 pregnant women who had spontaneous PTL and 54 pregnant women who had no specific findings as a control group. Serum total vitamin D 25-hydroxy vitamin D (25(OH)D) levels were measured using the Elecsys Vitamin D Total Kit. VDBP was measured using a VDBP Quantikine ELISA Kit. The levels of bioavailable 25(OH)D were calculated based on the total 25(OH)D and VDBP concentrations. DNA was extracted using the DNeasy Blood and Tissue Kit. Single nucleotide polymorphisms (rs7041) in GC were analyzed using a TaqMan SNP Genotyping Assay Kit. The unpaired t-test, Chi-squared, and ANCOVA tests were performed. Firth's penalized logistic regression was applied. The area under the curve (AUC) was calculated and the cutoff value was determined. All statistical analyses were performed using R version 4.0.3 (R Foundation for Statistical Computing, Vienna, Austria). RESULTS Total 25(OH)D levels were not significantly different between the two groups. Bioavailable 25(OH)D was significantly decreased in PTL women (p= .011), and VDBP was significantly increased in PTL women (p= .004) compared to the controls. Bioavailable 25(OH)D was lower in women with GT/TG and TT rs7041 genotypes than in those with GG, with statistical significance in women with the TT allele (p= .048). VDBP was higher in women with GT/TG and TT than those with GG, but there was no statistical significance. In PTL prevalence, bioavailable 25(OH)D and VDBP, the odds ratio increased by 1.463 times in GT/TG (p= .728) and increased by 1.675 times in TT compared to the GG allele (p= .640). In receiver operating characteristic (ROC) analysis for bioavailable 25(OH)D and VDBP, the AUC was 0.665 and 0685, respectively. The optimum cutoff of bioavailable 25(OH)D and VDBP levels for the diagnosis of PTL was calculated as 0.6 ng/mL and 523 µg/mL, respectively. CONCLUSIONS Pregnant women with the VDBP rs7041(c.1296 T > G) T allele genotype had reduced serum levels of bioavailable 25(OH)D and were more likely to develop PTL. Therefore, if the T allele is found in the VDBP rs7041 SNP genotyping test before or during pregnancy, more careful prenatal care may be required because of the increased risk of PTL.
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Affiliation(s)
- Min-Chul Cho
- Department of Laboratory Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea.,Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - In Ae Cho
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hyun Kyoung Seo
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Min Ji Kang
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Jae Yoon Jo
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Jeong Kyu Shin
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Soon Ae Lee
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Rock-Bum Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea.,Department of Preventive Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Won Jun Choi
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
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24
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Jo JY, Lee YJ, Seo HK, Kang MJ, Cho IA, Choi WJ, Kim SC, Cho MC. Vitamin D Status and Bone Health in Postmenopausal Women Working in Greenhouses. J Menopausal Med 2022; 28:70-77. [PMID: 36070872 PMCID: PMC9452596 DOI: 10.6118/jmm.21033] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
Objectives Greenhouse workers synthesize less vitamin D because ultraviolet light is blocked by the vinyl that covers the greenhouses. This study aimed to investigate the vitamin D status and bone health of postmenopausal women working in greenhouses. Methods This observational study enrolled women living in urban (n = 70, group 1) and rural areas (n = 91, group 2) and those working in greenhouses (n = 112, group 3). Serum levels of total and bioavailable 25-hydroxy-vitamin D [25(OH)D] and vitamin D binding protein were measured. T-scores of the lumbar spine and femur neck were measured by dual-energy X-ray absorptionetry. Results Heights were shorter in group 2 and group 3 than in group 1. Bioavailable 25(OH)D levels were higher and T-scores of the spine and femur were lower in both group 2 and 3 than in group 1. T-scores of the femur in group 3 were lower than those in group 2. The linear regression analysis showed that levels of bioavailable 25(OH)D significantly correlated with the spine T-scores but not with the femur T-scores. The prevalence of spinal osteoporosis was higher in both groups 2 and 3 compared to group 1. Group 3 demonstrated greater femur osteoporosis compared to groups 1 and 2. Conclusions Vitamin D plays an important role in spinal bone health. Moreover, working conditions are likely to play an important role in femur bone health. Therefore, appropriate working conditions and nutrition are paramount to improve bone health in postmenopausal women working in greenhouses.
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Affiliation(s)
- Jae Yoon Jo
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
| | - Yeon Jee Lee
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
| | - Hyun Kyoung Seo
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
| | - Min Ji Kang
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
| | - In Ae Cho
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Won Jun Choi
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Jinju, Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine, Jinju, Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Korea
| | - Min-Chul Cho
- Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
- Department of Laboratory Medicine, Gyeongsang National University Hospital, Jinju, Korea
- Department of Laboratory Medicine, Gyeongsang National University College of Medicine, Jinju, Korea
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25
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Cho MC, Park KS, Shin JK, Lee SA, Cho IA, Jo HC, Kim SC, Choi WJ. Correlational analysis of bone health status and vitamin D-related biomarkers in women working in agriculture. Medicine (Baltimore) 2021; 100:e27071. [PMID: 34449504 PMCID: PMC8389890 DOI: 10.1097/md.0000000000027071] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 08/03/2021] [Indexed: 01/09/2023] Open
Abstract
The purpose of this study was to investigate the status of bone health in women working in agriculture and analyze the associations between bone health and various vitamin D-related biomarkers.This observational study enrolled women working in agriculture (n = 210) and control occupations (n = 180). The concentration of serum total 25-hydroxy vitamin D [25(OH)D] was measured using the Elecsys Vitamin D Total Kit, and serum vitamin D-binding protein (VDBP) was measured by enzyme-linked immunosorbent assay. Along with albumin, 25(OH)D and VDBP were used to calculate the concentrations of bioavailable and free 25(OH)D. Bone mineral density (BMD) and T-score were measured at lumbar 1 to 4 and the femur neck using dual-energy X-ray absorptiometry. To identify factors affecting BMD, log-linear model and linear regression analysis were performed for statistical analysis.Agricultural women workers showed higher serum concentrations of bioavailable 25(OH)D (12.8 ± 3.7 vs 8.7 ± 5.1 ng/mL) and lower VDBP concentrations (201.8 ± 45.0 vs 216.0 ± 68.2 μg/mL) than control women. The association between these 2 vitamin D related-biomarkers and femur neck BMD were confirmed through univariable and multivariable linear model analysis. Although lumbar BMD did not differ between groups, the agricultural group displayed a lower femur BMD and a 4.3-fold increase in the risk of osteoporosis compared with the control group.Women working in agriculture showed lower femur BMD than the control group. Of the vitamin D-related biomarkers tested, bioavailable 25(OH)D and VDBP were associated with BMD. As bioavailable 25(OH)D levels are affected mainly by VDBP levels, VDBP may play a role in the lower femur neck BMD values observed in the agricultural group. Thus, the measurement of VDBP concentration might be considered a simple and non-invasive method for measuring bone health status.
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Affiliation(s)
- Min-Chul Cho
- Department of Laboratory Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Ki Soo Park
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Preventive Medicine, Gyeongsang National University College of Medicine, Republic of Korea
| | - Jeong Kyu Shin
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Republic of Korea
| | - Soon Ae Lee
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Republic of Korea
| | - In Ae Cho
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University Hospital, Republic of Korea
| | - Hyen Chul Jo
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University Changwon Hospital, Republic of Korea
| | - Seung Chan Kim
- Biostatistics Cooperation Center, Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Won Jun Choi
- Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
- Department of Obstetrics and Gynecology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Republic of Korea
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26
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Lee W, Kim SC. ASO Author Reflections: Is the Current Nodal Staging Systems for Pancreatic Cancer Applicable to all Possible Circumstances? Ann Surg Oncol 2021; 29:399-400. [PMID: 34427822 DOI: 10.1245/s10434-021-10693-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 08/06/2021] [Indexed: 11/18/2022]
Affiliation(s)
- W Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - S C Kim
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
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Abi B, Albahri T, Al-Kilani S, Allspach D, Alonzi LP, Anastasi A, Anisenkov A, Azfar F, Badgley K, Baeßler S, Bailey I, Baranov VA, Barlas-Yucel E, Barrett T, Barzi E, Basti A, Bedeschi F, Behnke A, Berz M, Bhattacharya M, Binney HP, Bjorkquist R, Bloom P, Bono J, Bottalico E, Bowcock T, Boyden D, Cantatore G, Carey RM, Carroll J, Casey BCK, Cauz D, Ceravolo S, Chakraborty R, Chang SP, Chapelain A, Chappa S, Charity S, Chislett R, Choi J, Chu Z, Chupp TE, Convery ME, Conway A, Corradi G, Corrodi S, Cotrozzi L, Crnkovic JD, Dabagov S, De Lurgio PM, Debevec PT, Di Falco S, Di Meo P, Di Sciascio G, Di Stefano R, Drendel B, Driutti A, Duginov VN, Eads M, Eggert N, Epps A, Esquivel J, Farooq M, Fatemi R, Ferrari C, Fertl M, Fiedler A, Fienberg AT, Fioretti A, Flay D, Foster SB, Friedsam H, Frlež E, Froemming NS, Fry J, Fu C, Gabbanini C, Galati MD, Ganguly S, Garcia A, Gastler DE, George J, Gibbons LK, Gioiosa A, Giovanetti KL, Girotti P, Gohn W, Gorringe T, Grange J, Grant S, Gray F, Haciomeroglu S, Hahn D, Halewood-Leagas T, Hampai D, Han F, Hazen E, Hempstead J, Henry S, Herrod AT, Hertzog DW, Hesketh G, Hibbert A, Hodge Z, Holzbauer JL, Hong KW, Hong R, Iacovacci M, Incagli M, Johnstone C, Johnstone JA, Kammel P, Kargiantoulakis M, Karuza M, Kaspar J, Kawall D, Kelton L, Keshavarzi A, Kessler D, Khaw KS, Khechadoorian Z, Khomutov NV, Kiburg B, Kiburg M, Kim O, Kim SC, Kim YI, King B, Kinnaird N, Korostelev M, Kourbanis I, Kraegeloh E, Krylov VA, Kuchibhotla A, Kuchinskiy NA, Labe KR, LaBounty J, Lancaster M, Lee MJ, Lee S, Leo S, Li B, Li D, Li L, Logashenko I, Lorente Campos A, Lucà A, Lukicov G, Luo G, Lusiani A, Lyon AL, MacCoy B, Madrak R, Makino K, Marignetti F, Mastroianni S, Maxfield S, McEvoy M, Merritt W, Mikhailichenko AA, Miller JP, Miozzi S, Morgan JP, Morse WM, Mott J, Motuk E, Nath A, Newton D, Nguyen H, Oberling M, Osofsky R, Ostiguy JF, Park S, Pauletta G, Piacentino GM, Pilato RN, Pitts KT, Plaster B, Počanić D, Pohlman N, Polly CC, Popovic M, Price J, Quinn B, Raha N, Ramachandran S, Ramberg E, Rider NT, Ritchie JL, Roberts BL, Rubin DL, Santi L, Sathyan D, Schellman H, Schlesier C, Schreckenberger A, Semertzidis YK, Shatunov YM, Shemyakin D, Shenk M, Sim D, Smith MW, Smith A, Soha AK, Sorbara M, Stöckinger D, Stapleton J, Still D, Stoughton C, Stratakis D, Strohman C, Stuttard T, Swanson HE, Sweetmore G, Sweigart DA, Syphers MJ, Tarazona DA, Teubner T, Tewsley-Booth AE, Thomson K, Tishchenko V, Tran NH, Turner W, Valetov E, Vasilkova D, Venanzoni G, Volnykh VP, Walton T, Warren M, Weisskopf A, Welty-Rieger L, Whitley M, Winter P, Wolski A, Wormald M, Wu W, Yoshikawa C. Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm. Phys Rev Lett 2021; 126:141801. [PMID: 33891447 DOI: 10.1103/physrevlett.126.141801] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g-2 Experiment for the positive muon magnetic anomaly a_{μ}≡(g_{μ}-2)/2. The anomaly is determined from the precision measurements of two angular frequencies. Intensity variation of high-energy positrons from muon decays directly encodes the difference frequency ω_{a} between the spin-precession and cyclotron frequencies for polarized muons in a magnetic storage ring. The storage ring magnetic field is measured using nuclear magnetic resonance probes calibrated in terms of the equivalent proton spin precession frequency ω[over ˜]_{p}^{'} in a spherical water sample at 34.7 °C. The ratio ω_{a}/ω[over ˜]_{p}^{'}, together with known fundamental constants, determines a_{μ}(FNAL)=116 592 040(54)×10^{-11} (0.46 ppm). The result is 3.3 standard deviations greater than the standard model prediction and is in excellent agreement with the previous Brookhaven National Laboratory (BNL) E821 measurement. After combination with previous measurements of both μ^{+} and μ^{-}, the new experimental average of a_{μ}(Exp)=116 592 061(41)×10^{-11} (0.35 ppm) increases the tension between experiment and theory to 4.2 standard deviations.
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Affiliation(s)
- B Abi
- University of Oxford, Oxford, United Kingdom
| | - T Albahri
- University of Liverpool, Liverpool, United Kingdom
| | - S Al-Kilani
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - D Allspach
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - L P Alonzi
- University of Washington, Seattle, Washington, USA
| | | | - A Anisenkov
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - F Azfar
- University of Oxford, Oxford, United Kingdom
| | - K Badgley
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Baeßler
- University of Virginia, Charlottesville, Virginia, USA
| | - I Bailey
- Lancaster University, Lancaster, United Kingdom
| | - V A Baranov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - E Barlas-Yucel
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - T Barrett
- Cornell University, Ithaca, New York, USA
| | - E Barzi
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Basti
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | | | - A Behnke
- Northern Illinois University, DeKalb, Illinois, USA
| | - M Berz
- Michigan State University, East Lansing, Michigan, USA
| | | | - H P Binney
- University of Washington, Seattle, Washington, USA
| | | | - P Bloom
- North Central College, Naperville, Illinois, USA
| | - J Bono
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Bottalico
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - T Bowcock
- University of Liverpool, Liverpool, United Kingdom
| | - D Boyden
- Northern Illinois University, DeKalb, Illinois, USA
| | - G Cantatore
- INFN, Sezione di Trieste, Trieste, Italy
- Università di Trieste, Trieste, Italy
| | - R M Carey
- Boston University, Boston, Massachusetts, USA
| | - J Carroll
- University of Liverpool, Liverpool, United Kingdom
| | - B C K Casey
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Cauz
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - S Ceravolo
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | | | - S P Chang
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | | | - S Chappa
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Charity
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - R Chislett
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - J Choi
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Z Chu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - T E Chupp
- University of Michigan, Ann Arbor, Michigan, USA
| | - M E Convery
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Conway
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - G Corradi
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - S Corrodi
- Argonne National Laboratory, Lemont, Illinois, USA
| | - L Cotrozzi
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - J D Crnkovic
- Brookhaven National Laboratory, Upton, New York, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- University of Mississippi, University, Mississippi, USA
| | - S Dabagov
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | | | - P T Debevec
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - P Di Meo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - R Di Stefano
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Cassino e del Lazio Meridionale, Cassino, Italy
| | - B Drendel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Driutti
- INFN, Sezione di Trieste, Trieste, Italy
- Università di Udine, Udine, Italy
- University of Kentucky, Lexington, Kentucky, USA
| | - V N Duginov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Eads
- Northern Illinois University, DeKalb, Illinois, USA
| | - N Eggert
- Cornell University, Ithaca, New York, USA
| | - A Epps
- Northern Illinois University, DeKalb, Illinois, USA
| | - J Esquivel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Farooq
- University of Michigan, Ann Arbor, Michigan, USA
| | - R Fatemi
- University of Kentucky, Lexington, Kentucky, USA
| | - C Ferrari
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - M Fertl
- Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany
- University of Washington, Seattle, Washington, USA
| | - A Fiedler
- Northern Illinois University, DeKalb, Illinois, USA
| | - A T Fienberg
- University of Washington, Seattle, Washington, USA
| | - A Fioretti
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - D Flay
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - S B Foster
- Boston University, Boston, Massachusetts, USA
| | - H Friedsam
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Frlež
- University of Virginia, Charlottesville, Virginia, USA
| | - N S Froemming
- Northern Illinois University, DeKalb, Illinois, USA
- University of Washington, Seattle, Washington, USA
| | - J Fry
- University of Virginia, Charlottesville, Virginia, USA
| | - C Fu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - C Gabbanini
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - M D Galati
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - S Ganguly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - A Garcia
- University of Washington, Seattle, Washington, USA
| | - D E Gastler
- Boston University, Boston, Massachusetts, USA
| | - J George
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | | | - A Gioiosa
- INFN, Sezione di Pisa, Pisa, Italy
- Università del Molise, Campobasso, Italy
| | - K L Giovanetti
- Department of Physics and Astronomy, James Madison University, Harrisonburg, Virginia, USA
| | - P Girotti
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - W Gohn
- University of Kentucky, Lexington, Kentucky, USA
| | - T Gorringe
- University of Kentucky, Lexington, Kentucky, USA
| | - J Grange
- Argonne National Laboratory, Lemont, Illinois, USA
- University of Michigan, Ann Arbor, Michigan, USA
| | - S Grant
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - F Gray
- Regis University, Denver, Colorado, USA
| | - S Haciomeroglu
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - D Hahn
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - D Hampai
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - F Han
- University of Kentucky, Lexington, Kentucky, USA
| | - E Hazen
- Boston University, Boston, Massachusetts, USA
| | - J Hempstead
- University of Washington, Seattle, Washington, USA
| | - S Henry
- University of Oxford, Oxford, United Kingdom
| | - A T Herrod
- University of Liverpool, Liverpool, United Kingdom
| | - D W Hertzog
- University of Washington, Seattle, Washington, USA
| | - G Hesketh
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Hibbert
- University of Liverpool, Liverpool, United Kingdom
| | - Z Hodge
- University of Washington, Seattle, Washington, USA
| | - J L Holzbauer
- University of Mississippi, University, Mississippi, USA
| | - K W Hong
- University of Virginia, Charlottesville, Virginia, USA
| | - R Hong
- Argonne National Laboratory, Lemont, Illinois, USA
- University of Kentucky, Lexington, Kentucky, USA
| | - M Iacovacci
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli, Napoli, Italy
| | | | - C Johnstone
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - J A Johnstone
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - P Kammel
- University of Washington, Seattle, Washington, USA
| | | | - M Karuza
- INFN, Sezione di Trieste, Trieste, Italy
- University of Rijeka, Rijeka, Croatia
| | - J Kaspar
- University of Washington, Seattle, Washington, USA
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - L Kelton
- University of Kentucky, Lexington, Kentucky, USA
| | - A Keshavarzi
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - D Kessler
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - K S Khaw
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
- University of Washington, Seattle, Washington, USA
| | | | - N V Khomutov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - B Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- North Central College, Naperville, Illinois, USA
| | - O Kim
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - S C Kim
- Cornell University, Ithaca, New York, USA
| | - Y I Kim
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - B King
- University of Liverpool, Liverpool, United Kingdom
| | - N Kinnaird
- Boston University, Boston, Massachusetts, USA
| | | | - I Kourbanis
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Kraegeloh
- University of Michigan, Ann Arbor, Michigan, USA
| | - V A Krylov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A Kuchibhotla
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - K R Labe
- Cornell University, Ithaca, New York, USA
| | - J LaBounty
- University of Washington, Seattle, Washington, USA
| | - M Lancaster
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - M J Lee
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - S Lee
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - S Leo
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - B Li
- Argonne National Laboratory, Lemont, Illinois, USA
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - D Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - L Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - I Logashenko
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | | | - A Lucà
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - G Lukicov
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - G Luo
- Northern Illinois University, DeKalb, Illinois, USA
| | - A Lusiani
- INFN, Sezione di Pisa, Pisa, Italy
- Scuola Normale Superiore, Pisa, Italy
| | - A L Lyon
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - B MacCoy
- University of Washington, Seattle, Washington, USA
| | - R Madrak
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - K Makino
- Michigan State University, East Lansing, Michigan, USA
| | - F Marignetti
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Cassino e del Lazio Meridionale, Cassino, Italy
| | | | - S Maxfield
- University of Liverpool, Liverpool, United Kingdom
| | - M McEvoy
- Northern Illinois University, DeKalb, Illinois, USA
| | - W Merritt
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - J P Miller
- Boston University, Boston, Massachusetts, USA
| | - S Miozzi
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
| | - J P Morgan
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - W M Morse
- Brookhaven National Laboratory, Upton, New York, USA
| | - J Mott
- Boston University, Boston, Massachusetts, USA
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Motuk
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Nath
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli, Napoli, Italy
| | - D Newton
- University of Liverpool, Liverpool, United Kingdom
| | - H Nguyen
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Oberling
- Argonne National Laboratory, Lemont, Illinois, USA
| | - R Osofsky
- University of Washington, Seattle, Washington, USA
| | - J-F Ostiguy
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Park
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - G Pauletta
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - G M Piacentino
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
- Università del Molise, Campobasso, Italy
| | - R N Pilato
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - K T Pitts
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - B Plaster
- University of Kentucky, Lexington, Kentucky, USA
| | - D Počanić
- University of Virginia, Charlottesville, Virginia, USA
| | - N Pohlman
- Northern Illinois University, DeKalb, Illinois, USA
| | - C C Polly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Popovic
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - J Price
- University of Liverpool, Liverpool, United Kingdom
| | - B Quinn
- University of Mississippi, University, Mississippi, USA
| | - N Raha
- INFN, Sezione di Pisa, Pisa, Italy
| | | | - E Ramberg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - N T Rider
- Cornell University, Ithaca, New York, USA
| | - J L Ritchie
- Department of Physics, University of Texas at Austin, Austin, Texas, USA
| | - B L Roberts
- Boston University, Boston, Massachusetts, USA
| | - D L Rubin
- Cornell University, Ithaca, New York, USA
| | - L Santi
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - D Sathyan
- Boston University, Boston, Massachusetts, USA
| | - H Schellman
- Northwestern University, Evanston, Illinois, USA
| | - C Schlesier
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - A Schreckenberger
- Boston University, Boston, Massachusetts, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Physics, University of Texas at Austin, Austin, Texas, USA
| | - Y K Semertzidis
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Y M Shatunov
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - D Shemyakin
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - M Shenk
- Northern Illinois University, DeKalb, Illinois, USA
| | - D Sim
- University of Liverpool, Liverpool, United Kingdom
| | - M W Smith
- INFN, Sezione di Pisa, Pisa, Italy
- University of Washington, Seattle, Washington, USA
| | - A Smith
- University of Liverpool, Liverpool, United Kingdom
| | - A K Soha
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Sorbara
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
- Università di Roma Tor Vergata, Rome, Italy
| | - D Stöckinger
- Institut für Kern-und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - J Stapleton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Still
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - C Stoughton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Stratakis
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - C Strohman
- Cornell University, Ithaca, New York, USA
| | - T Stuttard
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - H E Swanson
- University of Washington, Seattle, Washington, USA
| | - G Sweetmore
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | | | - M J Syphers
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- Northern Illinois University, DeKalb, Illinois, USA
| | - D A Tarazona
- Michigan State University, East Lansing, Michigan, USA
| | - T Teubner
- University of Liverpool, Liverpool, United Kingdom
| | | | - K Thomson
- University of Liverpool, Liverpool, United Kingdom
| | - V Tishchenko
- Brookhaven National Laboratory, Upton, New York, USA
| | - N H Tran
- Boston University, Boston, Massachusetts, USA
| | - W Turner
- University of Liverpool, Liverpool, United Kingdom
| | - E Valetov
- Lancaster University, Lancaster, United Kingdom
- Michigan State University, East Lansing, Michigan, USA
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - D Vasilkova
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | | | - V P Volnykh
- Joint Institute for Nuclear Research, Dubna, Russia
| | - T Walton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Warren
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Weisskopf
- Michigan State University, East Lansing, Michigan, USA
| | - L Welty-Rieger
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Whitley
- University of Liverpool, Liverpool, United Kingdom
| | - P Winter
- Argonne National Laboratory, Lemont, Illinois, USA
| | - A Wolski
- University of Liverpool, Liverpool, United Kingdom
| | - M Wormald
- University of Liverpool, Liverpool, United Kingdom
| | - W Wu
- University of Mississippi, University, Mississippi, USA
| | - C Yoshikawa
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
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Suh D, Jo WL, Kim SC, Kim YS, Kwon SY, Lim YW. Comparative analysis of titanium coating on cobalt-chrome alloy in vitro and in vivo direct metal fabrication vs. plasma spraying. J Orthop Surg Res 2020; 15:564. [PMID: 33243258 PMCID: PMC7690187 DOI: 10.1186/s13018-020-02108-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 06/20/2020] [Accepted: 11/19/2020] [Indexed: 11/25/2022] Open
Abstract
Background Titanium surface coating on cobalt-chromium (CoCr) alloy has characteristics desirable for an orthopedic implant as follows: strength, osteointegrative capability, and biocompatibility. Creating such a coated surface takes a challenging process and two dissimilar metals are not easily welded. In our study, we utilized additive manufacturing with a 3D printing called direct metal fabrication (DMF) and compared it to the plasma spraying method (TPS), to coat titanium onto CoCr alloy. We hypothesized that this would yield a coated surface quality as acceptable or better than the already established method of plasma spraying. For this, we compared characteristics of titanium-coated surfaces created by direct metal fabrication method (DMF) and titanium plasma spraying (TPS), both in vitro and in vivo, for (1) cell morphology, (2) confocal microscopy images of immunofluorescent assay of RUNX2 and fibronectin, (3) quantification of cell proliferation rate, (4) push-out biomechanical test, and (5) bone histomorphometry. Method For in vitro study, human osteoblast cells were seeded onto the coated surfaces. Cellular morphology was observed with a scanning electron microscope. Cellular proliferation was validated with ELISA, immunofluorescent assay. For in vivo study, coated rods were inserted into the distal femur of the rabbit and then harvested. The rods were biomechanically tested with a push-out test and observed for histomorphometry to evaluate the microscopic bone to implant ratio. Result For cell morphology observation, lamellipodia and filopodia, a cytoplasmic projection extending into porous structure, formed on both surfaces created by DMF and TPS. The proliferation of the osteoblasts, the DMF group showed a better result at different optic density levels (p = 0.035, 0.005, 0.001). Expression and distribution of fibronectin and Runx-2 genes showed similar degrees of expressions. The biomechanical push-out test yielded a similar result (p = 0.714). Histomorphometry analysis also showed a similar result (p = 0.657). Conclusion In conclusion, DMF is a method which can reliably create a proper titanium surface on CoCr alloy. The resulting product of the surface shows a similar quality to that of the plasma spraying method, both in vivo and in vitro, in terms of biological and mechanical property.
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Affiliation(s)
- Dongwhan Suh
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Department of Orthopaedic Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Woo Lam Jo
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Chan Kim
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Department of Orthopaedic Surgery, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong Sik Kim
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Soon Yong Kwon
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Department of Orthopaedic Surgery, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Wook Lim
- Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. .,Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Shim KH, Kim SC, Youn YC, Sung YH, An SSA. Decreased plasma α-synuclein in idiopathic Parkinson’s disease patients after adjusting hemolysis factor. Mol Cell Toxicol 2020. [DOI: 10.1007/s13273-020-00104-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kim SC, Boggu PR, Yu HN, Ki SY, Jung JM, Kim YS, Park GM, Ma SH, Kim IS, Jung YH. Synthesis and biological evaluation of quinoxaline derivatives as specific c-Met kinase inhibitors. Bioorg Med Chem Lett 2020; 30:127189. [PMID: 32371098 DOI: 10.1016/j.bmcl.2020.127189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 12/13/2022]
Abstract
A series of novel quinoxaline derivatives were synthesized and evaluated for their inhibitory activity against c-Met kinase enzyme. Most of the tested compounds exhibited potent inhibitory activity. All the synthesized quinoxaline compounds were further examined against c-Met overexpressed human gastric cancer cell line (MKN-45), which showed good inhibitory activity. Among the synthesized compounds, compound 4 exhibited better tumor growth inhibition in the animal model study; we also confirmed its acceptable drug property and highly selective target activity.
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Affiliation(s)
- Seung Chan Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea; R&D Center, CJ HealthCare Corporation, Icheon 17389, Republic of Korea
| | - Pulla Reddy Boggu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ha Na Yu
- R&D Center, CJ HealthCare Corporation, Icheon 17389, Republic of Korea
| | - So Young Ki
- R&D Center, CJ HealthCare Corporation, Icheon 17389, Republic of Korea
| | - Jun Min Jung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yeon Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Gi Min Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang Ho Ma
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Young Hoon Jung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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31
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Kim DM, Kim MJ, Moon JH, Lee EY, Hong JK, Lee S, Koh DI, Ryu YS, Kim SM, Jung SA, Shin JS, Kim J, Park YS, Hong SW, Lee SH, Jung J, Park SS, Kim DY, Kim EH, Jeong HR, Gong JH, Kim J, Chan Kim S, Yu HN, Ki SY, Kim TW, Jin DH. Inhibition of JAK1/2 can overcome EGFR-TKI resistance in human NSCLC. Biochem Biophys Res Commun 2020; 527:305-310. [PMID: 32446385 DOI: 10.1016/j.bbrc.2020.04.095] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/18/2020] [Indexed: 12/25/2022]
Abstract
Non-small lung cancer (NSCLC) is the most common cancer in the world. The epidermal growth factor receptor (EGFR) gene is mutated in approximately 10% of lung cancer cases in the US and 50% of lung cancer in Asia. The representative target therapeutic agent, erlotinib (EGFR tyrosine kinase inhibitor; EGFR TKI), is effective in inactivating EGFR in lung cancer patients. However, approximately 50-60% of patients are resistant to EGFR TKI. These populations are associated with the EGFR mutation. To overcome resistance to EGFR TKI, we discovered a JAK1 inhibitor, CJ14939. We investigated the efficacy of CJ14939 in human NSCLC cell lines in vitro and in vivo. Our results showed that CJ14939 induced the inhibition of cell growth. Moreover, we demonstrated that combination treatment with erlotinib and CJ14939 induced cell death in vitro and inhibited tumor growth in vivo. In addition, we confirmed the suppression of phosphorylated EGFR, JAK1, and Stat3 expression in erlotinib and CJ14939-treated human NSCLC cell lines. Our results provide evidence that JAK inhibition overcomes resistance to EGFR TKI in human NSCLCs.
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Affiliation(s)
- Dong Min Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Convergence Medicine, Asan Medical Center University of Ulsan College of Medicine, Seoul, Republic Korea
| | - Mi Jin Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Convergence Medicine, Asan Medical Center University of Ulsan College of Medicine, Seoul, Republic Korea
| | - Jai-Hee Moon
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Eun Young Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jun Ki Hong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seul Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong-In Koh
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Yae Seong Ryu
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung Mi Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Soo-A Jung
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae-Sik Shin
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Joseph Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yoon Sun Park
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung-Woo Hong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - So Hee Lee
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Joonyee Jung
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Sang Soo Park
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Do Yeon Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Eun Ho Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hong-Rae Jeong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ji Hee Gong
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Jieun Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea
| | - Seung Chan Kim
- CJ HealthCare R&D Center, Icheon-si, Gyeonggi-do, Republic of Korea
| | - Ha Na Yu
- CJ HealthCare R&D Center, Icheon-si, Gyeonggi-do, Republic of Korea
| | - So Young Ki
- CJ HealthCare R&D Center, Icheon-si, Gyeonggi-do, Republic of Korea
| | - Tae Won Kim
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Oncology, Asan Medical Center University of Ulsan College of Medicine, Seoul, Republic Korea.
| | - Dong-Hoon Jin
- Asan Institute for Life Science, Asan Medical Center, Seoul, Republic of Korea; Department of Convergence Medicine, Asan Medical Center University of Ulsan College of Medicine, Seoul, Republic Korea.
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Kim YI, Song KB, Lee YJ, Park KM, Hwang DW, Lee JH, Shin SH, Kwon JW, Ro JS, Kim SC. Management of isolated recurrence after surgery for pancreatic adenocarcinoma. Br J Surg 2019; 106:898-909. [PMID: 31162655 DOI: 10.1002/bjs.11144] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 07/10/2018] [Accepted: 01/25/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Recurrence of pancreatic cancer after primary pancreatectomy occurs in the vast majority of patients. The role of surgical treatment for recurrent pancreatic cancer is not well established. METHODS Patients who underwent primary pancreatectomy with curative intent from 2000 to 2014 at a single large-volume centre were evaluated retrospectively. CT or PET was used to select patients with an isolated recurrence. The clinicopathological features and survival outcomes were compared according to treatment modalities. RESULTS Of the 1610 patients with pancreatic cancer who underwent resection, 1346 (83·6 per cent) were diagnosed with recurrent pancreatic cancer. Recurrence was locoregional in 366 patients (27·2 per cent), distant multifocal in 251 (18·6 per cent), distant isolated in 188 (14·0 per cent), locoregional plus distant in 153 (11·4 per cent) and peritoneal seeding in 388 (28·8 per cent). Of the 1346 patients with recurrence, 197 (14·6 per cent) had isolated recurrence; of these, 48 (24·4 per cent of all isolated recurrences; 3·6 per cent of all recurrences) underwent resection. Median survival of the 197 patients after diagnosis of isolated recurrence was 14·7 months; it was longer in patients who underwent surgical resection than among those treated non-surgically (23·5 versus 12·0 months; P = 0·014). Multivariable analysis showed that chemotherapy and resection for recurrence were associated with better prognosis. Median survival after recurrence was longest in the 23 patients with isolated pulmonary recurrence (33·3 months). Survival after recurrence was better in patients who underwent resection of isolated recurrence in the remnant pancreas (median 28·0 versus 12·0 months, P = 0·010) and lung (median 36·5 versus 9·5 months; P = 0·010) than in those who did not undergo resection. CONCLUSION Surgical resection may be considered an option for treatment of patients with isolated recurrent pancreatic cancer.
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Affiliation(s)
- Y I Kim
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - K B Song
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - Y-J Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - K-M Park
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - D W Hwang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J H Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - S H Shin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J W Kwon
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J-S Ro
- Clinical Preventive Medicine Centre, Seoul National University Bundang Hospital, Bundang-gu, South Korea
| | - S C Kim
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
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Kim SH, Shin YI, Kim SC, Ko SH, Kim DY, Lee J, Sohn MK, Lee SG, Oh GJ, Lee YS, Joo MC, Han EY, Han J, Chang WH, Min JH, Kim YH. Factors Associated to Returning Home in the First Year after Stroke. Brain Neurorehabil 2019; 13:e1. [PMID: 36744270 PMCID: PMC9879522 DOI: 10.12786/bn.2020.13.e1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 09/02/2019] [Accepted: 09/12/2019] [Indexed: 11/08/2022] Open
Abstract
The objective of this study was to investigate factors affecting the return home one year after a stroke. The subjects of this study consisted of patients who participated in a large-scale multi-objective cohort study of initial stage stroke patients who were admitted to 9 representative hospitals in Korea. We analyzed the distribution of the subjects who had experienced stroke a year earlier by distinguishing the group who returned home and the other group that was hospitalized in rehabilitation hospitals. Based on this distribution, we evaluated the demographic, environmental, clinical, and psychological factors that can affect the return home. Overall, there were 464 subjects in the 'Return home' group and 99 subjects in the 'Rehabilitation hospitalization' group. job status, inconvenient housing structures, residential types, diagnosis, Functional Ambulation Categories, modified Rankin Scale, Korea-Modified Barthel Index, Function Independence Measure, Fugl-Meyer Assessment, Korean version of Mini-Mental State Examination, Korean version of Frenchay Aphasia Screening Test, Psychosocial Well-being Index-Short Form, Geriatric Depression Scale-Short Form, EuroQol-five Dimensional showed a significant difference between the 2 groups one year after the stroke. The factors affecting the return home one year after a stroke include functional status, activities of daily living, cognition, depression, stress, quality of life, job status. It is expected that factors affecting the rehabilitation of patients with stroke can be considered as basic data for establishing rehabilitation goals and treatment plans.
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Affiliation(s)
- Seung Han Kim
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Korea.,Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Yong-Il Shin
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Korea.,Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Seung Chan Kim
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Korea.,Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Sung Hwa Ko
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Deog Young Kim
- Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jongmin Lee
- Department of Rehabilitation Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Min Kyun Sohn
- Department of Rehabilitation Medicine, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Sam-Gyu Lee
- Department of Physical and Rehabilitation Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Gyung-Jae Oh
- Department of Preventive Medicine, Wonkwang University School of Medicine, Iksan, Korea
| | - Yang-Soo Lee
- Department of Rehabilitation Medicine, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Min Cheol Joo
- Department of Rehabilitation Medicine, Wonkwang University School of Medicine, Iksan, Korea
| | - Eun Young Han
- Department of Rehabilitation Medicine, Jeju National University Hospital, Jeju National University, School of Medicine, Jeju, Korea
| | - Junhee Han
- Department of Statistics, Hallym University, Chuncheon, Korea
| | - Won Hyuk Chang
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular and Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Hong Min
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Korea
| | - Yun-Hee Kim
- Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular and Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Garland SM, Pitisuttithum P, Ngan HYS, Cho CH, Lee CY, Chen CA, Yang YC, Chu TY, Twu NF, Samakoses R, Takeuchi Y, Cheung TH, Kim SC, Huang LM, Kim BG, Kim YT, Kim KH, Song YS, Lalwani S, Kang JH, Sakamoto M, Ryu HS, Bhatla N, Yoshikawa H, Ellison MC, Han SR, Moeller E, Murata S, Ritter M, Sawata M, Shields C, Walia A, Perez G, Luxembourg A. Efficacy, Immunogenicity, and Safety of a 9-Valent Human Papillomavirus Vaccine: Subgroup Analysis of Participants From Asian Countries. J Infect Dis 2019; 218:95-108. [PMID: 29767739 PMCID: PMC5989602 DOI: 10.1093/infdis/jiy133] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/16/2018] [Indexed: 01/17/2023] Open
Abstract
Background A 9-valent human papillomavirus-6/11/16/18/31/33/45/52/58 (9vHPV) vaccine extends coverage to 5 next most common oncogenic types (31/33/45/52/58) in cervical cancer versus quadrivalent HPV (qHPV) vaccine. We describe efficacy, immunogenicity, and safety in Asian participants (India, Hong Kong, South Korea, Japan, Taiwan, and Thailand) from 2 international studies: a randomized, double-blinded, qHPV vaccine-controlled efficacy study (young women aged 16–26 years; NCT00543543; Study 001); and an immunogenicity study (girls and boys aged 9–15 years; NCT00943722; Study 002). Methods Participants (N = 2519) were vaccinated at day 1 and months 2 and 6. Gynecological samples (Study 001 only) and serum were collected for HPV DNA and antibody assessments, respectively. Injection-site and systemic adverse events (AEs) were monitored. Data were analyzed by country and vaccination group. Results 9vHPV vaccine prevented HPV-31/33/45/52/58–related persistent infection with 90.4%–100% efficacy across included countries. At month 7, ≥97.9% of participants seroconverted for each HPV type. Injection-site AEs occurred in 77.7%–83.1% and 81.9%–87.5% of qHPV and 9vHPV vaccine recipients in Study 001, respectively, and 62.4%–85.7% of girls/boys in Study 002; most were mild to moderate. Conclusions The 9vHPV vaccine is efficacious, immunogenic, and well tolerated in Asian participants. Data support 9vHPV vaccination programs in Asia. Clinical Trials Registration NCT00543543; NCT00943722.
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Affiliation(s)
- S M Garland
- Western Pacific Regional HPV Labnet Reference Laboratory, Department of Infectious Disease and Microbiology, Royal Women's Hospital, Murdoch Children's Research Institute, Royal Children's Hospital and Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Victoria, Australia
| | | | - H Y S Ngan
- Department of Obstetrics and Gynaecology, the University of Hong Kong, China
| | - C-H Cho
- Department of Obstetrics and Gynecology, Keimyung University School of Medicine, Daegu, South Korea
| | - C-Y Lee
- Department of Gynecology, Chang Gung Memorial Hospital, Chiayi Branch, Taipei
| | - C-A Chen
- Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei
| | - Y C Yang
- MacKay Memorial Hospital, Taipei
| | - T-Y Chu
- Tzu Chi Medical Center, Hualien
| | - N-F Twu
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - R Samakoses
- Department of Pediatrics, Phramongkutklao Hospital, Bangkok, Thailand
| | | | - T H Cheung
- Department of Obstetric and Gynaecology, Chinese University of Hong Kong, China
| | - S C Kim
- Division of Gynecologic Oncology, Ewha Womans University Mokdong Hospital, School of Medicine Ewha Womans University, Seoul, South Korea
| | - L-M Huang
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - B-G Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y-T Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asian Medical Center, Seoul, South Korea
| | - K-H Kim
- Department of Pediatrics and Center for Vaccine Evaluation and Study, Ewha Womans University College of Medicine, Seoul, South Korea
| | - Y-S Song
- Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, South Korea
| | - S Lalwani
- Bharati Vidyapeeth Deemed University Medical College and Hospital, Pune, India
| | - J-H Kang
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, South Korea
| | - M Sakamoto
- Department of Gynaecology, Sasaki Foundation Kyoundo Hospital and Department of Obstetrics and Gynaecology, School of Medicine, the Jikei University, Tokyo, Japan
| | - H-S Ryu
- Department of Obstetrics and Gynecology, School of Medicine, Ajou University, Suwon, South Korea
| | - N Bhatla
- Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - H Yoshikawa
- Ibaraki Prefectural Central Hospital, Kasama, Ibaraki, Japan
| | | | | | - E Moeller
- Merck & Co., Inc., Kenilworth, New Jersey
| | | | - M Ritter
- Merck & Co., Inc., Kenilworth, New Jersey
| | | | - C Shields
- Merck & Co., Inc., Kenilworth, New Jersey
| | - A Walia
- Merck & Co., Inc., Kenilworth, New Jersey
| | - G Perez
- Merck & Co., Inc., Kenilworth, New Jersey
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Hyeon SJ, Liu T, Kim SC, Park J, Choi MH, Shim HS, Im H, Nguyen P, Hwang YJ, Meyer R, Song EJ, Hwang EM, Kowall N, Seo H, Lee J, Ryu H. Dysfunction of X-linked inhibitor of apoptosis protein (XIAP) leads to neuronal damage via altered p53 activity in Huntington's disease. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.298] [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: 11/29/2022] Open
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Kim SC, Mathews DV, Breeden CP, Higginbotham LB, Ladowski J, Martens G, Stephenson A, Farris AB, Strobert EA, Jenkins J, Walters EM, Larsen CP, Tector M, Tector AJ, Adams AB. Long-term survival of pig-to-rhesus macaque renal xenografts is dependent on CD4 T cell depletion. Am J Transplant 2019; 19:2174-2185. [PMID: 30821922 PMCID: PMC6658347 DOI: 10.1111/ajt.15329] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 01/22/2019] [Accepted: 02/04/2019] [Indexed: 01/25/2023]
Abstract
The shortage of available organs remains the greatest barrier to expanding access to transplant. Despite advances in genetic editing and immunosuppression, survival in experimental models of kidney xenotransplant has generally been limited to <100 days. We found that pretransplant selection of recipients with low titers of anti-pig antibodies significantly improved survival in a pig-to-rhesus macaque kidney transplant model (6 days vs median survival time 235 days). Immunosuppression included transient pan-T cell depletion and an anti-CD154-based maintenance regimen. Selective depletion of CD4+ T cells but not CD8+ T cells resulted in long-term survival (median survival time >400 days vs 6 days). These studies suggested that CD4+ T cells may have a more prominent role in xenograft rejection compared with CD8+ T cells. Although animals that received selective depletion of CD8+ T cells showed signs of early cellular rejection (marked CD4+ infiltrates), animals receiving selective CD4+ depletion exhibited normal biopsy results until late, when signs of chronic antibody rejection were present. In vitro study results suggested that rhesus CD4+ T cells required the presence of SLA class II to mount an effective proliferative response. The combination of low pretransplant anti-pig antibody and CD4 depletion resulted in consistent, long-term xenograft survival.
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Affiliation(s)
- SC Kim
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - DV Mathews
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - CP Breeden
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - LB Higginbotham
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - J Ladowski
- National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - G Martens
- National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - A Stephenson
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - AB Farris
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia
| | - EA Strobert
- Yerkes National Primate Research Center, School of Medicine, Emory University, Atlanta, Georgia
| | - J Jenkins
- Yerkes National Primate Research Center, School of Medicine, Emory University, Atlanta, Georgia
| | - EM Walters
- National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - CP Larsen
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia,Yerkes National Primate Research Center, School of Medicine, Emory University, Atlanta, Georgia
| | - M Tector
- Comprehensive Transplant Institute, University of Alabama Birmingham School of Medicine, Birmingham, Alabama
| | - AJ Tector
- Comprehensive Transplant Institute, University of Alabama Birmingham School of Medicine, Birmingham, Alabama
| | - AB Adams
- Emory Transplant Center, Department of Surgery, School of Medicine, Emory University, Atlanta, Georgia,Yerkes National Primate Research Center, School of Medicine, Emory University, Atlanta, Georgia
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Kim SC, Jo WL, Kim YS, Kwon SY, Cho YS, Lim YW. Titanium Powder Coating Using Metal 3D Printing: A Novel Coating Technology for Cobalt-Chromium Alloy Implants. Tissue Eng Regen Med 2019; 16:11-18. [PMID: 30815346 DOI: 10.1007/s13770-018-0168-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/24/2018] [Accepted: 11/09/2018] [Indexed: 11/24/2022] Open
Abstract
Background Three-dimensional (3D) printing with a direct metal fabrication (DMF) technology has been innovatively introduced in the field of surface treatment of prostheses. The purpose of this study was to determine whether such modifications on the surface of cobalt-chromium (CoCr) alloy by titanium powder coating using DMF improves the osseointegration ability of CoCr alloy. Methods We compared the in vitro and in vivo ability of cells to adhere to DMF-coated CoCr alloy with machining. Biological and morphological responses to human osteoblast cell lines were examined by measuring cell proliferation rate and observing expression of actin filament. For in vivo study, we inserted different specimens in each medulla of the distal femurs of rabbit. After 3 months, the distal femurs were harvested, and a push-out test and histomorphometric analyses were performed. Results The cell proliferation rate and cell adhesion in the DMF group were higher compared with those in the machined group. Human osteoblast cells on the DMF-coated surface were more strongly adhered and well-proliferated compared with those on the other surface. In the in vivo test, there was a significant difference in the ultimate shear strength between the DMF and machined groups (2.49 MPa vs. 0.87 MPa, respectively, p = 0.001). In the histomorphometric analysis, there was a significant difference in the mean bone-to-implant contact percentages between the DMF and machined groups (72.3 ± 6.2% vs. 47.6 ± 6.9%, respectively, p < 0.001). Conclusion Titanium coating of CoCr alloy with 3D metal printing provides optimal surface characteristics and a good biological surface both in vitro and in vivo.
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Affiliation(s)
- Seung Chan Kim
- 1Department of Orthopaedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 180 Wangsan-ro, Dongdaemun-gu, Seoul, South Korea
| | - Woo Lam Jo
- 2Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, South Korea
| | - Yong Sik Kim
- 2Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, South Korea
| | - Soon Yong Kwon
- 1Department of Orthopaedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 180 Wangsan-ro, Dongdaemun-gu, Seoul, South Korea
| | - Yong Soo Cho
- 1Department of Orthopaedic Surgery, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, 180 Wangsan-ro, Dongdaemun-gu, Seoul, South Korea
| | - Young Wook Lim
- 2Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, South Korea
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Boo SH, Joo MC, Lee JM, Kim SC, Yu YM, Kim MS. Association between skeletal muscle mass and cardiorespiratory fitness in community-dwelling elderly men. Aging Clin Exp Res 2019; 31:49-57. [PMID: 29916089 DOI: 10.1007/s40520-018-0987-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 06/08/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Sarcopenia reduces physical ability and cardiorespiratory fitness (CRF), leading to poor quality of life. AIM The aim of this study was to investigate the relationship between skeletal muscle mass and CRF in elderly men. METHODS We assessed 102 community-dwelling men over 60 years old. Appendicular skeletal muscle mass (ASM) was determined using bioelectrical impedance analysis, and the skeletal muscle mass index (SMI) was calculated as ASM divided by the square of height. Subjects with an SMI less than 7.0 kg/m2 were included in the sarcopenic group, as recommended by the Asian Working Group for Sarcopenia. To investigate CRF parameters, a cardiopulmonary exercise test was performed using the Bruce protocol. CRF parameters were subdivided into aerobic capacity, cardiovascular response, and ventilatory response. RESULTS Of the 102 subjects, 15 (14.7%) were included in the sarcopenic group. There were significant correlations between SMI and peak oxygen consumption (VO2peak) (r = 0.597, p < 0.001), and between SMI and VO2peak/weight (r = 0.268, p = 0.024). Moreover, there were positive correlations between SMI and first ventilatory threshold (VT1) (r = 0.352, p = 0.008) and between SMI and VT1/weight (r = 0.189, p = 0.039). Additionally, peak oxygen pulse (O2pulsepeak) was significantly correlated with SMI (r = 0.558, p < 0.001). VO2peak, VO2peak/weight and O2pulsepeak showed significant differences between the sarcopenic and non-sarcopenic groups (p < 0.05, all). In multiple linear regression analyses, the factor related to VO2peak was SMI (β = 0.473, p < 0.001) and that related to O2pulsepeak was also SMI (β = 0.442, p < 0.001). DISCUSSION AND CONCLUSIONS This study demonstrated that skeletal muscle mass might be closely associated with CRF. Therefore, sarcopenia should be appropriately managed to improve an individual's CRF.
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Kim SC, Sun HY, Kim HS, Ryoo I. Long-Term Ultrasound Follow-Up of Incidentally Detected Thyroglossal Duct Cysts in Adults. AJNR Am J Neuroradiol 2018; 39:2356-2359. [PMID: 30467213 DOI: 10.3174/ajnr.a5882] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/29/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE There has been no previous study that used ultrasonography for longitudinal changes of thyroglossal duct cysts, to our knowledge. We assessed the prevalence and interval changes in incidentally detected thyroglossal duct cysts in adults. MATERIALS AND METHODS From January 2010 to December 2016, we identified 796 ultrasonography radiologic reports from 513 subjects that contained the words "thyroglossal" or "TGDC" among 54,369 participants. Of 513 subjects, 172 (M/F = 103:69, mean age, 53 ± 11 years) who underwent ≥2 sonography studies were enrolled. Two reviewers determined ultrasonography features, including maximal diameter, location, internal echogenicity, wall thickness, and the presence of posterior enhancement, internal septa, and solid components. RESULTS The mean follow-up time of total 172 lesions was 2.01 ± 1.13 years. Thyroglossal duct cysts ranged from 2 to 32 mm (mean, 8.77 ± 3.83 mm) on the initial ultrasonography examination. On follow-up ultrasonography studies, 14 lesions (8.2%) increased by >2 mm, while most thyroglossal duct cysts (133 lesions, 77.3%) remained stable in size. During the follow-up period, 31 lesions (18.0%) showed interval changes in ultrasonography features. There was no significant relationship between the presence of ultrasonography feature changes and size changes (P = .12). CONCLUSIONS On ultrasonography, 0.9% of adults had incidental thyroglossal duct cysts. Most did not increase in size with time despite changes in various ultrasonography features. Therefore, we recommend performing an observation at long intervals of 2-3 years for asymptomatic thyroglossal duct cysts, and we suggest that fine-needle aspiration can be suspended unless suspicious findings of malignancy are detected.
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Affiliation(s)
- S C Kim
- From the Department of Radiology (S.C.K., H.Y.S., H.S.K.), Seoul National University Hospital Healthcare System Gangnam Center, Seoul National University College of Medicine, Seoul, South Korea
| | - H Y Sun
- From the Department of Radiology (S.C.K., H.Y.S., H.S.K.), Seoul National University Hospital Healthcare System Gangnam Center, Seoul National University College of Medicine, Seoul, South Korea
| | - H S Kim
- From the Department of Radiology (S.C.K., H.Y.S., H.S.K.), Seoul National University Hospital Healthcare System Gangnam Center, Seoul National University College of Medicine, Seoul, South Korea
| | - I Ryoo
- From the Department of Radiology (S.C.K., H.Y.S., H.S.K.), Seoul National University Hospital Healthcare System Gangnam Center, Seoul National University College of Medicine, Seoul, South Korea
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Lee SB, Kim DH, Kim T, Lee SH, Jeong JH, Kim SC, Park YJ, Lim D, Kang C. Anion gap and base deficit are predictors of mortality in acute pesticide poisoning. Hum Exp Toxicol 2018; 38:185-192. [PMID: 30001645 DOI: 10.1177/0960327118788146] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND: Acute pesticide poisoning has long been a serious problem as a method of suicide worldwide. This poisoning is a highly fatal condition that requires a rapid and precise diagnosis for adequate treatment. However, various studies on mortality predictor factors have been insufficient for whole pesticide treatments. We hypothesized that the initial plasma anion gap (AG) and base deficit (BD) are reliable prognostic factors. METHODS: A retrospective study analyzed 561 patients with a diagnosis of acute pesticide poisoning between January 1, 2014 and June 30, 2017. The initial AG and BD values were divided into quartiles according to the number of patients. Survival at 30 days from admission was estimated using the Kaplan-Meier survival analysis. Receiver-operator characteristic (ROC) curves were drawn, and the areas under the curve for AG and BD for mortality were calculated. RESULTS: Fifty-eight (10.3%) of 561 patients died within 30 days. The highest AG quartile (>22 mEq/L) was associated with an increased risk of 30-day hospital mortality. Compared to patients with an AG less than 14.7 mEq/L, these patients had a 4.18-fold higher risk of 30-day hospital mortality and the highest BD quartile (>7.9 mEq/L) was associated with an increased risk of 30-day hospital mortality. Compared to patients with a BD less than 1.4 mEq/L, these patients had 2.23-fold higher risk of 30-day hospital mortality. The areas under the ROC for AG and BD curve were 0.699 and 0.744, respectively. CONCLUSIONS: Initial high AG and BD values could predict mortality and require precise intensive care.
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Affiliation(s)
- S B Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - D H Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - T Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S H Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - J H Jeong
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S C Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - Y J Park
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - D Lim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - C Kang
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
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Abstract
Objectives Laser-engineered net shaping (LENS) of coated surfaces can overcome the limitations of conventional coating technologies. We compared the in vitro biological response with a titanium plasma spray (TPS)-coated titanium alloy (Ti6Al4V) surface with that of a Ti6Al4V surface coated with titanium using direct metal fabrication (DMF) with 3D printing technologies. Methods The in vitro ability of human osteoblasts to adhere to TPS-coated Ti6Al4V was compared with DMF-coating. Scanning electron microscopy (SEM) was used to assess the structure and morphology of the surfaces. Biological and morphological responses to human osteoblast cell lines were then examined by measuring cell proliferation, alkaline phosphatase activity, actin filaments, and RUNX2 gene expression. Results Morphological assessment of the cells after six hours of incubation using SEM showed that the TPS- and DMF-coated surfaces were largely covered with lamellipodia from the osteoblasts. Cell adhesion appeared similar in both groups. The differences in the rates of cell proliferation and alkaline phosphatase activities were not statistically significant. Conclusions The DMF coating applied using metal 3D printing is similar to the TPS coating, which is the most common coating process used for bone ingrowth. The DMF method provided an acceptable surface structure and a viable biological surface. Moreover, this method is automatable and less complex than plasma spraying. Cite this article: T. Shin, D. Lim, Y. S. Kim, S. C. Kim, W. L. Jo, Y. W. Lim. The biological response to laser-aided direct metal-coated Titanium alloy (Ti6Al4V). Bone Joint Res 2018;7:357–361. DOI: 10.1302/2046-3758.75.BJR-2017-0222.R1.
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Affiliation(s)
- T Shin
- Department of Mechanical Engineering, Sejoing University; Corentec, Central R&D Center, Seoul, South Korea
| | - D Lim
- Department of Mechanical Engineering, Sejoing University, Seoul, South Korea
| | - Y S Kim
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - S C Kim
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - W L Jo
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Y W Lim
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, School of Medicine, The Catholic University of Korea, Seoul, South Korea
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Prost-Squarcioni C, Caux F, Schmidt E, Jonkman MF, Vassileva S, Kim SC, Iranzo P, Daneshpazhooh M, Terra J, Bauer J, Fairley J, Hall R, Hertl M, Lehman JS, Marinovic B, Patsatsi A, Zillikens D, Werth V, Woodley DT, Murrell DF. International Bullous Diseases Group: consensus on diagnostic criteria for epidermolysis bullosa acquisita. Br J Dermatol 2018; 179:30-41. [PMID: 29165796 DOI: 10.1111/bjd.16138] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2017] [Indexed: 01/28/2023]
Abstract
BACKGROUND Epidermolysis bullosa acquisita (EBA) is a complex autoimmune bullous disease disease with variable clinical presentations and multiple possible diagnostic tests, making an international consensus on the diagnosis of EBA essential. OBJECTIVES To obtain an international consensus on the clinical and diagnostic criteria for EBA. METHODS The International Bullous Diseases Group (IBDG) met three times to discuss the clinical and diagnostic criteria for EBA. For the final voting exercise, 22 experts from 14 different countries voted on 50 different items. When > 30% disagreed with a proposal, a discussion was held and re-voting carried out. RESULTS In total, 48 of 50 proposals achieved consensus after discussion. This included nine diagnostic criteria, which are summarized in a flow chart. The IBDG was unable to determine one procedure that would be applicable worldwide. A limitation of the study is that differential diagnosis of bullous systemic lupus erythematosus has not been addressed. CONCLUSIONS This first international consensus conference established generally agreed-upon clinical and laboratory criteria defining the clinical classification of and diagnostic testing for EBA. Holding these voting exercises in person with the possibility of discussion prior to voting has advantages in reaching consensus over Delphi exercises with remote voting.
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Affiliation(s)
- C Prost-Squarcioni
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, APHP, Avicenne Hospital, Bobigny, France.,Department of Histology, UFR Léonard de Vinci, University Paris 13, Bobigny, France.,Department of Pathology, APHP, Avicenne Hospital, Bobigny, France
| | - F Caux
- Department of Dermatology and Referral Center for Autoimmune Bullous Diseases, APHP, Avicenne Hospital, Bobigny, France
| | - E Schmidt
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - M F Jonkman
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - S Vassileva
- Department of Dermatology, Medical University of Sofia, Sofia, Bulgaria
| | - S C Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - P Iranzo
- Department of Dermatology, Hospital Clinic de Barcelona, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
| | - M Daneshpazhooh
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - J Terra
- Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - J Bauer
- Division of Molecular Dermatology, Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - J Fairley
- Department of Dermatology, University of Iowa and Department of Veterans Affairs Medical Center, Iowa City, IA, U.S.A
| | - R Hall
- Department of Dermatology, Duke Medical Center, Durham, NC, U.S.A
| | - M Hertl
- Department of Dermatology, University Hospital, Marburg, Germany
| | - J S Lehman
- Department of Dermatology, Mayo Clinic, Rochester, MN, U.S.A
| | - B Marinovic
- Department of Dermatology and Venereology, University Hospital Center Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - A Patsatsi
- Second University Dermatology Department, Aristotle University School of Medicine, Papageorgiou General Hospital, Thessaloniki, Greece
| | - D Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | | | - V Werth
- Department of Dermatology, University of Pennsylvania and Philadelphia Department of Veterans Affairs Medical Center, Philadelphia, PA, U.S.A
| | - D T Woodley
- Department of Dermatology, Keck School of Medicine, University of Southern California, Los Angeles, CA, U.S.A
| | - D F Murrell
- Department of Dermatology at St George Hospital, University of New South Wales, Sydney, Australia
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Ghassemi Nejad J, Sung KI, Lee BH, Peng JL, Kim JY, Chemere B, Oh SM, Kim MJ, Kim SC, Kim BW. 3 Comparison of hair cortisol levels and body temperature response prior to and post heat stress and water deprivation in Holstein dairy cows. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- J Ghassemi Nejad
- Institute of Animal Resources, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - K I Sung
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B H Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - J L Peng
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - J Y Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B Chemere
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - S M Oh
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - M J Kim
- Institute of Animal Resources, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - S C Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
| | - B W Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea, Republic of (South)
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Lee YG, Kim SC, Chang M, Nam E, Kim SG, Cho SI, Ryu DH, Kam S, Choi BY, Park SB, Kim MJ. Complications and Socioeconomic Costs Associated With Falls in the Elderly Population. Ann Rehabil Med 2018; 42:120-129. [PMID: 29560332 PMCID: PMC5852215 DOI: 10.5535/arm.2018.42.1.120] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 06/22/2017] [Indexed: 11/05/2022] Open
Abstract
Objective To explore the incidence, characteristics, complications and socioeconomic impacts associated with falls in community-dwelling elderly. Methods From September 1, 2015 to October 12, 2015, a questionnaire-based survey was conducted involving a total of 2,012 elderly who lived in Guro-gu (Seoul), Yeongdeungpo-gu (Seoul), Yangpyeong-gu (Gyeonggi-do), Dalseong-gu (Daegu), and Jung-gu (Daegu). The subjects were interviewed using a structured questionnaire to obtain demographic characteristics and comprehensive falling histories. The socioeconomic cost related to falls was estimated using the statistical data provided by the Health Insurance Review and Assessment Service. Results Falls were recorded in 666 out of the 2,012 subjects (33.1%) during the past year. Frequent falls occurred during December, in the afternoons, when the floor was slippery. The most common injuries included the low back and the most common injury type was sprain. The total direct costs related to falls involving the 2,012 subjects were 303,061,019 KRW (Korean won). The average medical cost related to falls in the 2,012 subjects was 150,627 KRW and the average medical cost of 666 subjects who experienced falls was 455,047 KRW. Estimates of the total population over the age of 60 years showed that the annual direct costs associated with falls in Korea over the age of 60 years were about 1.378 trillion KRW. Conclusion This study was conducted to explore the incidence, characteristics, complications, and socioeconomic impacts of falls in community-dwelling elderly. This study is expected to be used as a source of basic data for the establishment of medical policy for the elderly and the development of a fall prevention program for the elderly in Korea.
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Affiliation(s)
- Yeong Guk Lee
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Seung Chan Kim
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Misoo Chang
- Biostatistical Consulting and Research Lab, Medical Research Coordinating Center, Hanyang University, Seoul, Korea
| | - Eunwoo Nam
- Biostatistical Consulting and Research Lab, Medical Research Coordinating Center, Hanyang University, Seoul, Korea
| | - Seul Gi Kim
- Department of Epidemiology, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Sung-Il Cho
- Department of Epidemiology, Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Dong Hee Ryu
- Daegu-Gyeongbuk Regional Cancer Center, Kyungpook National University Medical Center, Daegu, Korea
| | - Sin Kam
- Department of Preventive Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Bo Youl Choi
- Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Si-Bog Park
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Mi Jung Kim
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
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Abstract
Poly(D,L-lactic-co-glycolic acid) has been extensively used as a controlled release carrier for drug delivery due to its good biocompatibility, biodegradability, and mechanical strength. In this study, porous PLGA microspheres were fabricated by an emulsion-solvent evaporation technique using poly ethylene glycol (PEG) as an extractable porogen and loaded with protein (lysozyme) by suspending them in protein solution. For controlled release of protein, porous microspheres containing lysozyme were treated with water-miscible solvents in aqueous phase for production of pore-closed microspheres. The surface morphology of microspheres were investigated using scanning electron microscopy (SEM) for confirmation of its porous microstructure structure. Protein property after release was observed by enzymatic activity assay. The pore-closing process resulted in nonporous microspheres which exhibited sustained release patterns over an extended period.
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Bermas BL, Kim SC, Huybrechts K, Mogun H, Hernandez-Diaz S, Bateman BT, Desai RJ. Trends in use of hydroxychloroquine during pregnancy in systemic lupus erythematosus patients from 2001 to 2015. Lupus 2018; 27:1012-1017. [DOI: 10.1177/0961203317749046] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- B L Bermas
- Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA
| | - S C Kim
- Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA
- Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women’s Hospital, Boston, MA, USA
| | - K Huybrechts
- Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women’s Hospital, Boston, MA, USA
| | - H Mogun
- Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA
| | - S Hernandez-Diaz
- Department of Epidemiology, Harvard Chan School of Public Health, Boston, MA, USA
| | - B T Bateman
- Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women’s Hospital, Boston, MA, USA
| | - R J Desai
- Division of Pharmacoepidemiology and Pharmacoeconomics, Brigham and Women’s Hospital, Boston, MA, USA
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Lee YG, Kim SC, Park SB, Kim MJ. Hennekam Syndrome: A Case Report. Ann Rehabil Med 2018; 42:184-188. [PMID: 29560340 PMCID: PMC5852224 DOI: 10.5535/arm.2018.42.1.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 08/01/2017] [Indexed: 11/05/2022] Open
Affiliation(s)
- Yeong Guk Lee
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Seung Chan Kim
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Si-Bog Park
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Mi Jung Kim
- Department of Rehabilitation Medicine, Hanyang University College of Medicine, Seoul, Korea
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Kim SC, Lee YG, Park SB, Kim TH, Lee KH. Muscle Mass, Strength, Mobility, Quality of Life, and Disease Severity in Ankylosing Spondylitis Patients: A Preliminary Study. Ann Rehabil Med 2017; 41:990-997. [PMID: 29354575 PMCID: PMC5773442 DOI: 10.5535/arm.2017.41.6.990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/23/2017] [Indexed: 12/05/2022] Open
Abstract
Objective To determine if there is muscle mass reduction in patients with ankylosing spondylitis (AS) compared to the general population and to examine the relationship between skeletal muscle mass, quality of life (QOL), strength, and mobility in patients with AS. Methods A total of 30 AS patients were enrolled in this study. Skeletal muscle mass was measured by bioelectrical impedance analysis, and it was expressed as the skeletal muscle mass index (SMI). QOL was assessed using the EuroQOL (EQ-5D). To measure mobility, the modified Schöber test and chest expansion test were used. To measure grip strength as a measure of muscle strength, we used the hydraulic hand dynamometer. Additionally, we divided the patients into two groups according to the degree of X-ray finding and compared the differences between the two groups. Results There was no significant reduction in skeletal muscle mass in patients with AS compared to the general population. Also, there was no significant correlation between SMI and QOL. On the other hand, there was a significant positive correlation between SMI and mobility, and grip strength. A significant positive correlation was found between mobility and QOL. Additionally, there was a statistically significant difference in mobility between the two groups according to the degree of X-ray finding. Conclusion Maintaining muscle mass in AS patients may not be helpful for improving QOL, but it may contribute to achieving adequate mobility and strength.
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Affiliation(s)
- Seung Chan Kim
- Department of Rehabilitation Medicine, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Korea
| | - Yeong Guk Lee
- Department of Rehabilitation Medicine, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Korea
| | - Si-Bog Park
- Department of Rehabilitation Medicine, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Korea
| | - Tae Hwan Kim
- Department of Rheumatology, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Korea
| | - Kyu Hoon Lee
- Department of Rehabilitation Medicine, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Korea
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Kim SC, Im W. Adipose stem cell neurospheres for Huntington's disease. Cytotherapy 2017; 19:1546-1547. [PMID: 29029956 DOI: 10.1016/j.jcyt.2017.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 11/26/2022]
Affiliation(s)
- Seung Chan Kim
- Department of Neurology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea; Graduate Studies, Medical School & College of Medicine, Yonsei University, Seoul, Republic of Korea.
| | - Wooseok Im
- Department of Neurology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
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Choi JH, Kim SC, Kim J, Chung YK. Primary Cutaneous Mucinous Carcinoma Treated with Narrow Surgical Margin. Arch Craniofac Surg 2017; 17:158-161. [PMID: 28913274 PMCID: PMC5556805 DOI: 10.7181/acfs.2016.17.3.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/16/2016] [Accepted: 08/16/2016] [Indexed: 11/11/2022] Open
Abstract
Primary cutaneous mucinous carcinoma (PCMC) is a rare malignant tumor of eccrine origin. Clinically, the carcinoma presents as a solitary, slow growing, and painless nodule. For this reason, this tumor is often considered to be a benign mass in the preoperative setting. The lesion is, however, malignant in nature and has a tendency for local recurrence and infrequent metastasis. Wide local excision is the treatment of choice. However, few reports exist with information regarding surgical margins and clinical outcomes. Herein, we report a case of PCMC excised with a narrow surgical margin and review the relevant literature. A 49-year-old man presented with a small cutaneous nodule of the right cheek. The mass was excised without any margin, but pathologic examination revealed histology of mucinous carcinoma. Because of this, the operative site was re-excised with a 5-mm margin, and the wound was closed using a V-Y advancement flap. Systemic work-up did not reveal other potential metastatic primary, for a final diagnosis of PCMC. We report this case of PCMC, treated with relatively narrow margin in a patient with good prognostic factors.
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Affiliation(s)
- Jin-Hee Choi
- Department of Plastic and Reconstructive Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Seung Chan Kim
- Department of Plastic and Reconstructive Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jiye Kim
- Department of Plastic and Reconstructive Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Yoon Kyu Chung
- Department of Plastic and Reconstructive Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
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