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Lee DY, Jeong J, Choi WI. Association between hemoglobin trajectories and the incidence of dementia in a cohort of females aged 55-79 years. PLoS One 2024; 19:e0300784. [PMID: 38568921 PMCID: PMC10990242 DOI: 10.1371/journal.pone.0300784] [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: 06/21/2023] [Accepted: 03/05/2024] [Indexed: 04/05/2024] Open
Abstract
PURPOSE To assess the association between pattern changes in hemoglobin levels over time and the incidence of dementia using trajectories in females aged 55-79 years. MATERIALS AND METHODS We conducted a retrospective cohort study using females of aged 55-79 years from the National Health Insurance Service National Health Screening Cohort in Korea. To identify hemoglobin trajectories over eight years (2002-2009), we performed a three-step approach comprising measures of change, factor analysis, and cluster analysis. Univariate and multivariate Cox proportional hazard models were used to assess the associations between hemoglobin trajectories and the incidence of dementia. RESULTS We included 20,195 of 235,742 female participants. New dementia (N = 2664) was developed during follow-up period (2010-2015). Five hemoglobin trajectories were identified: high, mid, low, increasing, and decreasing. With high as a reference, the hazard ratios (HRs) for low and decreasing trajectories were significant, 1.28 (95% confidence interval [CI], 1.13-1.45) and 1.21 (95% CI, 1.10-1.34) in univariate models, respectively. However, only the HR for the decreasing trajectory was significant, 1.12 (95% CI, 1.01-1.24) after adjustment for confounders. CONCLUSION The decreasing trajectory of hemoglobin levels within the normal range was associated with dementia. Even females aged 55-79 years without anemia might be vulnerable to dementia development risk.
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Affiliation(s)
- Dong Yoon Lee
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Goyang, South Korea
| | - Jihyeon Jeong
- Department of Statistics, Kyungpook University, Daegu, South Korea
| | - Won-Il Choi
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Goyang, South Korea
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Bae S, Loloci G, Lee DY, Jang HJ, Jeong J, Choi WI. Association between Antacid Exposure and Risk of Interstitial Lung Diseases. Tuberc Respir Dis (Seoul) 2024; 87:185-193. [PMID: 38111098 PMCID: PMC10990614 DOI: 10.4046/trd.2023.0093] [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: 07/11/2023] [Revised: 10/07/2023] [Accepted: 12/17/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND The mechanisms leading to lung fibrosis are still under investigation. This study aimed to demonstrate whether antacids could prevent the development of interstitial lung disease (ILD). METHODS This population-based longitudinal cohort study was conducted between January 2006 and December 2010 in South Korea. Eligible subjects were ≥40 years of age, exposed to proton pump inhibitors (PPI)±histamine-2 receptor antagonists (H-2 blockers) or H-2 blockers only, and had no history of ILD between 2004 and 2005. Exposure to antacids was defined as the administration of either PPI or H-2 receptor antagonists for >14 days, whereas underexposure was defined as antacid treatment administered for less than 14 days. Newly developed ILDs, including idiopathic pulmonary fibrosis (IPF), were counted during the 5-year observation period. The association between antacid exposure and ILD development was evaluated using adjusted Cox regression models with variables, such as age, sex, smoking history, and comorbidities. RESULTS The incidence rates of ILD with/without antacid use were 43.2 and 33.8/100,000 person-years, respectively and those of IPF were 14.9 and 22.9/100,000 person-years, respectively. In multivariable analysis, exposure to antacid before the diagnosis of ILD was independently associated with a reduced development of ILD (hazard ratio [HR], 0.57; 95% confidence interval [CI], 0.45 to 0.71; p<0.001), while antacid exposure was not associated with development of IPF (HR, 0.88; 95% CI, 0.72 to 1.09; p=0.06). CONCLUSION Antacid exposure may be independently associated with a decreased risk of ILD development.
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Affiliation(s)
- Soohyun Bae
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Gjustina Loloci
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
- German Hospital of Tirana, Tirana, Albania
| | - Dong Yoon Lee
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Hye Jin Jang
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Jihyeon Jeong
- Department of Statistics, Kyungpook National University, Daegu, Republic of Korea
| | - Won-Il Choi
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
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Oh J, Kang JH, Chae HD, Yoo HJ, Hong SH, Lee DY, Choi JY. Diagnosis of osteochondral lesions of the talus on Dual-layer spectral detector CT arthrography: clinical feasibility of virtual noncontrast images. Clin Radiol 2024:S0009-9260(24)00144-2. [PMID: 38649313 DOI: 10.1016/j.crad.2024.03.006] [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] [Received: 10/30/2023] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 04/25/2024]
Abstract
AIM To compare the image quality of virtual noncontrast (VNC) and true noncontrast (TNC) CT images and to evaluate the clinical feasibility of VNC CT images for assessing osteochondral lesions of the talus (OLTs). MATERIALS AND METHODS Forty-five OLT patients who underwent ankle CT arthrography (CTA) using dual-layer spectral detector CT were enrolled. Reconstruction of VNC and three-dimensional volume rendering images was performed. Afterward, image noise, the signal-to-noise ratio (SNR), and the contrast-to-noise ratio (CNR) were measured. For the subjective evaluation, two board-certified musculoskeletal radiologists [R2-1] assessed spatial resolution, overall image quality, and lesion conspicuity. The accuracy rate for OLT grading was determined in 23 patients who underwent arthroscopic surgery. RESULTS While VNC images showed significantly less noise than TNC images, TNC images showed better SNRs and CNRs (p<.01). In the subjective analysis, TNC images showed better overall image quality (p<.001). For the 3D volume rendering images, VNC images scored significantly higher for lesion conspicuity (p<.001). The accuracy rates of CTA and CTA with VNC images for OLT grading were 79.2% and 83.3%, respectively. Regarding confidence level, when CTA and VNC images were evaluated together, the confidence level was significantly higher than that when only CTA images were evaluated (p<.001). CONCLUSION VNC imaging can provide better confidence level of OLT grading and evaluation of the integrity of the subchondral bone plate when combined with conventional CTA without additional radiation dose to the patient. In addition, VNC images-based 3D volume rendering reconstruction would be helpful for preoperative planning in OLT patients.
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Affiliation(s)
- J Oh
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
| | - J H Kang
- Department of Radiology, Konkuk University Medical Center, Seoul, Republic of Korea
| | - H-D Chae
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H J Yoo
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S H Hong
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D Y Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - J-Y Choi
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea; Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Yoo Y, Yoo YH, Lee DY, Jung KH, Lee SW, Park JC. Caffeine Produced in Rice Plants Provides Tolerance to Water-Deficit Stress. Antioxidants (Basel) 2023; 12:1984. [PMID: 38001837 PMCID: PMC10669911 DOI: 10.3390/antiox12111984] [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: 09/08/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Exogenous or endogenous caffeine application confers resistance to diverse biotic stresses in plants. In this study, we demonstrate that endogenous caffeine in caffeine-producing rice (CPR) increases tolerance even to abiotic stresses such as water deficit. Caffeine produced by CPR plants influences the cytosolic Ca2+ ion concentration gradient. We focused on examining the expression of Ca2+-dependent protein kinase genes, a subset of the numerous proteins engaged in abiotic stress signaling. Under normal conditions, CPR plants exhibited increased expressions of seven OsCPKs (OsCPK10, OsCPK12, OsCPK21, OsCPK25, OsCPK26, OsCPK30, and OsCPK31) and biochemical modifications, including antioxidant enzyme (superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase) activity and non-enzymatic antioxidant (ascorbic acid) content. CPR plants exhibited more pronounced gene expression changes and biochemical alterations in response to water-deficit stress. CPR plants revealed increased expressions of 16 OsCPKs (OsCPK1, OsCPK2, OsCPK3, OsCPK4, OsCPK5, OsCPK6, OsCPK9, OsCPK10, OsCPK11, OsCPK12, OsCPK14, OsCPK16, OsCPK18, OsCPK22, OsCPK24, and OsCPK25) and 8 genes (OsbZIP72, OsLEA25, OsNHX1, OsRab16d, OsDREB2B, OsNAC45, OsP5CS, and OsRSUS1) encoding factors related to abiotic stress tolerance. The activity of antioxidant enzymes increased, and non-enzymatic antioxidants accumulated. In addition, a decrease in reactive oxygen species, an accumulation of malondialdehyde, and physiological alterations such as the inhibition of chlorophyll degradation and the protection of photosynthetic machinery were observed. Our results suggest that caffeine is a natural chemical that increases the potential ability of rice to cope with water-deficit stress and provides robust resistance by activating a rapid and comprehensive resistance mechanism in the case of water-deficit stress. The discovery, furthermore, presents a new approach for enhancing crop tolerance to abiotic stress, including water deficit, via the utilization of a specific natural agent.
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Affiliation(s)
- Youngchul Yoo
- Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea;
| | - Yo-Han Yoo
- Central Area Crop Breeding Division, Department of Central Area Crop Science, National Institute of Crop Science, RDA, Suwon 16429, Republic of Korea;
| | - Dong Yoon Lee
- Graduate School of Green-Bio Science, Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (D.Y.L.); (K.-H.J.)
| | - Ki-Hong Jung
- Graduate School of Green-Bio Science, Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (D.Y.L.); (K.-H.J.)
| | - Sang-Won Lee
- Graduate School of Green-Bio Science, Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea; (D.Y.L.); (K.-H.J.)
| | - Jong-Chan Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
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Sim YH, Hwang JH, Yun MJ, Lee K, Lee DY, Cha SI. Lighting-environment-adjustable block-type 3D indoor PV for wireless sensor communication. Sci Rep 2023; 13:17846. [PMID: 37857808 PMCID: PMC10587129 DOI: 10.1038/s41598-023-45226-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/17/2023] [Indexed: 10/21/2023] Open
Abstract
Demand is increasing for photovoltaics (PVs) as a result of the development of the Internet of Things and edge computing technologies. As the lighting environment is different for the applications, thus, PVs must be adjustable to various light environments in which systems are installed. PVs should therefore be capable of easily changing their morphology without damaging the cells. To address this problem, in this work, a three-dimensional (3D) structure that increases power output under omnidirectional light was applied to a crystalline silicon solar cell array using a block-type method. The resultant block-type 3D indoor PV could operate a Bluetooth low-energy module in conjunction with a power management integrated circuit when the illuminance was 532 lx and 1620 lx and each PV installation area was 129.9cm2 and 32.48 cm2 respectively.
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Affiliation(s)
- Yeon Hyang Sim
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, 12, Jeongiui-Gil, Seongsan-Gu, Changwon, 51543, Korea
| | - Jung-Hyun Hwang
- Power SoC Research Center, Power Semiconductor Research Division, Korea Electrotechnology Research Institute, Changwon, Korea
- Department of Electrical and Electronic Engineering, Pusan National University, Changwon, Korea
| | - Min Ju Yun
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, 12, Jeongiui-Gil, Seongsan-Gu, Changwon, 51543, Korea
| | - Kyoungho Lee
- Power SoC Research Center, Power Semiconductor Research Division, Korea Electrotechnology Research Institute, Changwon, Korea
| | - Dong Yoon Lee
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, 12, Jeongiui-Gil, Seongsan-Gu, Changwon, 51543, Korea
| | - Seung I Cha
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, 12, Jeongiui-Gil, Seongsan-Gu, Changwon, 51543, Korea.
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Jang HJ, Lee DY, Loloci G, Jeong J, Choi WI. Association between the use of statins and risk of interstitial lung disease/idiopathic pulmonary fibrosis: time-dependent analysis of population-based nationwide data. Eur Respir J 2023; 62:2300291. [PMID: 37202155 DOI: 10.1183/13993003.00291-2023] [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: 06/24/2022] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND We aimed to study whether statin use is associated with lowering the development of interstitial lung disease (ILD) and idiopathic pulmonary fibrosis (IPF). METHODS The study population was the Korean National Health Insurance Service-Health Screening Cohort. ILD and IPF cases were identified using diagnosis codes (J84.1 for ILD and J84.1A as a special code for IPF) based on the International Classification of Diseases, 10th Revision. The study participants were followed up from 1 January 2004 to 31 December 2015. Statin use was defined by the cumulative defined daily dose (cDDD) per 2-year interval and participants were categorised into never-users, <182.5, 182.5-365.0, 365.0-547.5 and ≥547.5 by cDDD. A Cox regression was used to fit models with time-dependent variables of statin use. RESULTS Incidence rates for ILD with and without statin use were 20.0 and 44.8 per 100 000 person-years, respectively, and those for IPF were 15.6 and 19.3 per 100 000 person-years, respectively. The use of statins was independently associated with a lower incidence of ILD and IPF in a dose-response manner (p-values for trend <0.001). ILD showed respective adjusted hazard ratios (aHRs) of 1.02 (95% CI 0.87-1.20), 0.60 (95% CI 0.47-0.77), 0.27 (95% CI 0.16-0.45) and 0.24 (95% CI 0.13-0.42) according to the increasing category of statin use compared with never-users. IPF showed respective aHRs of 1.29 (95% CI 1.07-1.57), 0.74 (95% CI 0.57-0.96), 0.40 (95% CI 0.25-0.64) and 0.21 (95% CI 0.11-0.41). CONCLUSION A population-based cohort analysis found that statin use is independently associated with a decreased risk of ILD and IPF in a dose-response manner.
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Affiliation(s)
- Hye Jin Jang
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Gyeonggi-do, Republic of Korea
- These authors contributed equally to this work
| | - Dong Yoon Lee
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Gyeonggi-do, Republic of Korea
- These authors contributed equally to this work
| | - Gjustina Loloci
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Gyeonggi-do, Republic of Korea
| | - Jihyeon Jeong
- Department of Statistics, Kyungpook National University, Daegu, Republic of Korea
| | - Won-Il Choi
- Department of Internal Medicine, Myongji Hospital, Hanyang University, Gyeonggi-do, Republic of Korea
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Fauzan L, Yun MJ, Sim YH, Lee DY, Cha SI. Small area high voltage photovoltaic module for high tolerance to partial shading. iScience 2023; 26:106745. [PMID: 37378326 PMCID: PMC10291249 DOI: 10.1016/j.isci.2023.106745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/04/2023] [Accepted: 04/21/2023] [Indexed: 06/29/2023] Open
Abstract
The urban application of photovoltaics is necessary to achieve carbon-free electricity production. However, the serial connections within modules cause problems under partial shading conditions, which is inevitable in urban applications. Therefore, a partial shading-tolerance photovoltaic module is needed. This research introduces the small-area-high-voltage (SAHiV) module with rectangle and triangle shapes for high partial shading tolerance and compares its performance with conventional and shingled modules. We tested it with discrete and continuous shading shape groups to represent unpredictable shading by simulations using LTspice with Monte Carlo simulation combined with latin hypercube sampling that were validated by comparison with experimental results. The SAHiV triangle module exhibited the best partial shading tolerance under most scenarios. Both types of SAHiV modules (rectangular and triangular) were robust against all types of shading patterns and angles, as indicated by their stable shading-tolerance values. These modules are thus suitable for use in urban areas.
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Affiliation(s)
- Luthfan Fauzan
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon-si, Gyeongsangnam-do 51543, Korea
- Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon-si, Gyeongsangnam-do 51543, Korea
| | - Min Ju Yun
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon-si, Gyeongsangnam-do 51543, Korea
| | - Yeon Hyang Sim
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon-si, Gyeongsangnam-do 51543, Korea
| | - Dong Yoon Lee
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon-si, Gyeongsangnam-do 51543, Korea
| | - Seung I. Cha
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon-si, Gyeongsangnam-do 51543, Korea
- Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon-si, Gyeongsangnam-do 51543, Korea
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Kim JW, Ko JM, Lee DY, Shin JW. A Case Report of Rubinstein-Taybi Syndrome Presenting with Extensive Keloid Formation and Review of Literature. Ann Dermatol 2023; 35:S19-S24. [PMID: 37853858 PMCID: PMC10608378 DOI: 10.5021/ad.20.320] [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: 12/17/2020] [Revised: 04/14/2021] [Accepted: 05/03/2021] [Indexed: 10/20/2023] Open
Abstract
Rubinstein-Taybi syndrome (RSTS) is an extremely rare genetic disorder affecting multi-organ systems. A tendency to form keloid is one of the common dermatologic manifestations. We describe a 23-year-old female presented with extensive keloids which developed spontaneously. She had typical facial features, broad thumbs, and dental defects, which were suspicious features of genetic syndrome. Direct sequencing for cyclic-AMP-regulated enhancer binding protein revealed a novel mutation. So far, 23 cases of RSTS have been reported in Korean literature. To the best of our knowledge, this is the first report in Korea to describe confirmed case of RSTS with extensive keloids as a chief manifestation.
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Affiliation(s)
- Jee-Woo Kim
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jung Min Ko
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
| | - Dong Yoon Lee
- Department of Dermatology, Dankook University Hospital, Cheonan, Korea
| | - Jung-Won Shin
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea.
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Go S, Lee DY, Choi WI, Jeong J. Association between use of antacid medications (proton pump inhibitors and histamine-2 receptor antagonists) and the incidence of lung cancer: A population-based cohort analysis. Medicine (Baltimore) 2022; 101:e30399. [PMID: 36086741 PMCID: PMC10980457 DOI: 10.1097/md.0000000000030399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/21/2021] [Accepted: 07/26/2022] [Indexed: 01/12/2023] Open
Abstract
This study investigated the association between antacid administration and lung cancer incidence in a real-world setting. This was a nationwide, retrospective cohort study. The cohort comprised random samples (n = 1,031,392) from the entire South Korean population in 2002. The duration of antacid administration between January 2006 and December 2010 was recorded for each participant. Newly developed lung cancers were counted during the 5-year observation period (January 1, 2006 to December 31, 2010). A total of 437,370 participants aged ≥ 40 years were included, of whom 301,201 (68.9%) had antacid exposure before the diagnosis of lung cancer. A total of 1230 (0.28%) antacid-exposed patients developed lung cancer. Among patients with no antacid exposure or underexposure (n = 136,171), 597 (0.44%) developed lung cancer. In the multivariable analysis, antacid exposure before the diagnosis of lung cancer was independently associated with a reduced incidence of lung cancer (hazard ratio: 0.64; 95% confidence interval: 0.55-0.74; P < .001). Antacid use might be independently associated with a decreased risk of lung cancer development in this cohort study.
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Affiliation(s)
- Subin Go
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Dong Yoon Lee
- Department of Preventive Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Won-Il Choi
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Jihyeon Jeong
- Department of Statistics, Kyungpook National University, Bukgu, Daegu, Republic of Korea
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Jang SH, Lee DY, Jeong J, Choi WI. Prognostic outcome of treatment modalities for epidermal growth factor receptor-mutated advanced lung cancer. Korean J Intern Med 2022; 37:811-820. [PMID: 35811369 PMCID: PMC9271728 DOI: 10.3904/kjim.2021.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/24/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS The treatment of epidermal growth factor receptor (EGFR)-mutated lung cancer cases has shown remarkable development in the past two decades. However, there have been limited studies comparing the prognostic effects of EGFR-tyrosine kinase inhibitor (TKI) and other treatment modalities. Therefore, we compared the survival outcomes of patients treated with EGFR-TKIs versus those treated with other treatment modalities. METHODS Patient data were collected from the Korean National Health Insurance Database, National Health Insurance Service- National Sample Cohort 2002 to 2015, which was released by the Korean National Health Insurance Service in 2015. The lung cancer group included patients (n = 2,003) initially diagnosed with lung cancer between January 2010 and December 2013. The main outcome was all-cause mortality. A Cox proportional hazard regression analysis was used to calculate the relative risk of mortality. RESULTS Among the newly diagnosed lung cancer cases, 1,004 (50.1%) were included in the analysis. A 15.1-month median survival benefit was observed in the EGFR-TKI group than that of the multimodality therapy group. The risk of mortality was as follows: EGFR-TKI treatment group (n = 142; hazard ratio [HR], 5.29; 95% confidence interval [CI], 3.57 to 7.86) and multimodality therapy group (n = 326; HR, 7.42; 95% CI, 5.19 to 10.63) compared to surgery only (n = 275). CONCLUSION Patients with advanced lung cancer harbouring EGFR mutations treated with EGFR-TKIs showed better median survival and lower risk of mortality than those in the multimodality therapy group. In the case of EGFR-mutated advanced lung cancer, there is room for downstaging in the TNM classification.
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Affiliation(s)
- Seung Hun Jang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang,
Korea
| | - Dong Yoon Lee
- Department of Preventive Medicine, Keimyung University School of Medicine, Daegu,
Korea
| | - Jihyeon Jeong
- Department of Statistics, Kyungpook National University, Daegu,
Korea
| | - Won-Il Choi
- Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang,
Korea
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11
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Piozzi GN, Lee DY, Kim JS, Kim SH. Da Vinci Single-Port (SP) robotic transverse colectomy for mid-transverse colon cancer. Tech Coloproctol 2022; 26:681-682. [PMID: 35244806 DOI: 10.1007/s10151-022-02603-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/18/2022] [Indexed: 11/25/2022]
Affiliation(s)
- G N Piozzi
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - D Y Lee
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - J S Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S H Kim
- Division of Colon and Rectal Surgery, Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, 73 Goryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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12
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Shon U, Yun DK, Seong GH, Lee DY, Kim MH, Park BC. Pancreatitis, Panniculitis, and Polyarthritis Syndrome with a Fatal Course. Ann Dermatol 2022; 34:83-85. [PMID: 35221604 PMCID: PMC8831300 DOI: 10.5021/ad.2022.34.1.83] [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: 02/25/2020] [Revised: 09/24/2020] [Accepted: 10/09/2020] [Indexed: 11/08/2022] Open
Affiliation(s)
- Uri Shon
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Dea Kwan Yun
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Gi Hyun Seong
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Dong Yoon Lee
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Myung Hwa Kim
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Byung Cheol Park
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
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13
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Lee DY, Kominoski JS, Kline M, Robinson M, Roebling S. Saltwater and nutrient legacies reduce net ecosystem carbon storage despite freshwater restoration: insights from experimental wetlands. Restor Ecol 2021. [DOI: 10.1111/rec.13524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dong Yoon Lee
- Institute of Environment, Department of Biological Sciences Florida International University, Miami, FL 33199, U.S.A
- South Florida Water Management District, Everglades Division West Palm Beach, FL 33411, U.S.A
| | - John S. Kominoski
- Institute of Environment, Department of Biological Sciences Florida International University, Miami, FL 33199, U.S.A
| | - Michael Kline
- Institute of Environment, Department of Biological Sciences Florida International University, Miami, FL 33199, U.S.A
- Everglades Science Center National Audubon Society, Tavernier, FL 33070, U.S.A
- Baruch Institute of Coastal Ecology and Forest Science Clemson University, Georgetown, SC 29440, U.S.A
| | - Michelle Robinson
- Institute of Environment, Department of Biological Sciences Florida International University, Miami, FL 33199, U.S.A
- Everglades Science Center National Audubon Society, Tavernier, FL 33070, U.S.A
- Planning and Environmental Resources, Monroe County, Key West, Florida 33040 U.S.A
| | - Suzy Roebling
- Institute of Environment, Department of Biological Sciences Florida International University, Miami, FL 33199, U.S.A
- Everglades Science Center National Audubon Society, Tavernier, FL 33070, U.S.A
- Florida Fish and Wildlife Conservation Commission, Tallahassee, FL 32399 U.S.A
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14
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Lee DY, Kim BR, Yang S, Kim M, Yoon TY, Youn SW. The frequency of cryotherapy for clinical remission of actinic keratosis correlated with the extent of keratinocytic atypia. Int J Dermatol 2021; 61:e209-e211. [PMID: 34486726 DOI: 10.1111/ijd.15870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/23/2021] [Accepted: 08/10/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Dong Yoon Lee
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Bo Ri Kim
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Seungkeol Yang
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Minsu Kim
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Tae Young Yoon
- Department of Dermatology, College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea
| | - Sang Woong Youn
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
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15
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Park JM, Han YM, Oh JY, Lee DY, Choi SH, Hahm KB. Transcriptome profiling implicated in beneficiary actions of kimchi extracts against Helicobacter pylori infection. J Clin Biochem Nutr 2021; 69:171-187. [PMID: 34616109 PMCID: PMC8482382 DOI: 10.3164/jcbn.20-116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/15/2020] [Indexed: 12/12/2022] Open
Abstract
Dietary intervention to prevent Helicobacter pylori (H. pylori)-gastric cancer might be ideal because of no risk of bacterial resistance, safety, and rejuvenating action of atrophic gastritis. We have published data about the potential of fermented kimchi as nutritional approach for H. pylori. Hence recent advances in RNAseq analysis lead us to investigate the transcriptome analysis to explain these beneficiary actions of kimchi. gastric cells were infected with either H. pylori or H. pylori plus kimchi. 943 genes were identified as significantly increased or decreased genes according to H. pylori infection and 68 genes as significantly changed between H. pylori infection and H. pylori plus kimchi (p<0.05). Gene classification and Medline database showed DLL4, FGF18, PTPRN, SLC7A11, CHAC1, FGF21, ASAN, CTH, and CREBRF were identified as significantly increased after H. pylori, but significantly decreased with kimchi and NEO1, CLDN8, KLRG1, and IGFBP1 were identified as significantly decreased after H. pylori, but increased with kimchi. After KEGG and STRING-GO analysis, oxidative stress, ER stress, cell adhesion, and apoptosis genes were up-regulated with H. pylori infection but down-regulated with kimchi, whereas tissue regeneration, cellular anti-oxidative response, and anti-inflammation genes were reversely regulated with kimchi (p<0.01). Conclusively, transcriptomes of H. pylori plus kimchi showed significant biological actions.
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Affiliation(s)
- Jong Min Park
- Daejeon University School of Oriental Medicine, Daejeon, 34520, Korea
| | - Young Min Han
- Seoul Center, Korea Basic Science Institute, Seoul, 02456, Korea
| | - Ji Young Oh
- CJ Food Research Center, Suwon, 16471, Korea
| | | | | | - Ki Baik Hahm
- CHA Cancer Preventive Research Center, CHA Bio Complex, Pangyo, 13497, Korea
- Medpacto Research Institute, Medpacto, Seoul, 06668, Korea
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16
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Park JM, Han YM, Oh JY, Lee DY, Choi SH, Kim SJ, Hahm KB. Fermented kimchi rejuvenated precancerous atrophic gastritis via mitigating Helicobacter pylori-associated endoplasmic reticulum and oxidative stress. J Clin Biochem Nutr 2021; 69:158-170. [PMID: 34616108 PMCID: PMC8482386 DOI: 10.3164/jcbn.20-180] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 10/30/2020] [Accepted: 12/25/2020] [Indexed: 12/12/2022] Open
Abstract
Dietary intervention to prevent Helicobacter pylori (H. pylori)-gastric cancer might be ideal by long-term intervention, rejuvenating action, and no risk of bacterial resistance. Stimulated with finding that kimchi prevented H. pylori-gastric cancer, we compared the efficacy of cancer preventive kimchi (cpkimchi) and standard recipe kimchi (skimchi) and the efficacy between fermented kimchi and non-fermented kimchi (kimuchi) in H. pylori-initiated gastric cancer model and explored novel mechanisms hinted from RNAseq transcriptome analysis. Animal models assessing gastric pathology on 24 and 36 weeks after H. pylori initiated, salt diet-promoted gastric mutagenesis model showed fermented cpkimchi afforded the best outcome of either rejuvenating atrophic gastritis or inhibiting tumorigenesis compared to skimchi and kimuchi. Highest inhibition of atrophic gastritis was achieved with cpkimchi, while significantly lower in kimuchi. Transcriptomic analysis showed ameliorated-endoplasmic reticulum (ER) stress, -oxidative stress, and -apoptosis as major rejuvenating action of cpkimchi. Homogenates from animal model showed that elevated expressions of p-PERK, IRE, ATF6, p-elf, and XBP1 in control group, while significantly decreased with dietary intake of only cpkimchi. Significantly increased expressions of HO-1 and γ-GCS were only noted with cpkimchi. Conclusively, long-term dietary intervention of fermented cpkimchi can be potential way preventing H. pylori-associated carcinogenesis via rejuvenation of atrophic gastritis.
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Affiliation(s)
- Jong Min Park
- Daejeon University School of Oriental Medicine, Daehak-ro 62, Dong-gu, Daejeon 34520, Korea
| | - Young Min Han
- Western Seoul Center, Korea Basic Science Institute, University-Industry Cooperate Building, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Korea
| | - Ji Young Oh
- CJ Food Research, CJ Blossom Park, Gwanggyo-ro, Yeongtong-gu, Suwon 16471, Korea
| | - Dong Yoon Lee
- CJ Food Research, CJ Blossom Park, Gwanggyo-ro, Yeongtong-gu, Suwon 16471, Korea
| | - Seung Hye Choi
- CJ Food Research, CJ Blossom Park, Gwanggyo-ro, Yeongtong-gu, Suwon 16471, Korea
| | - Seong Jin Kim
- Medpacto Research Institute, Medpacto Inc., 92, Myeongdal-ro, Sheocho-gu, Seoul 06668, Korea
| | - Ki Baik Hahm
- Medpacto Research Institute, Medpacto Inc., 92, Myeongdal-ro, Sheocho-gu, Seoul 06668, Korea
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17
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Park JM, Lee WH, Seo H, Oh JY, Lee DY, Kim SJ, Hahm KB. Microbiota changes with fermented kimchi contributed to either the amelioration or rejuvenation of Helicobacter pylori-associated chronic atrophic gastritis. J Clin Biochem Nutr 2021; 69:98-110. [PMID: 34376919 PMCID: PMC8325762 DOI: 10.3164/jcbn.20-123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/25/2020] [Indexed: 12/21/2022] Open
Abstract
Korean fermented kimchi is probiotic food preventing Helicobacter pylori (H. pylori)-associated atrophic gastritis in both animal and human trial. In order to reveal the effect of fermented kimchi against H. pylori infection, we performed clinical trial to document the changes of fecal microbiota in 32 volunteers (H. pylori (-) chronic superficial gastritis (CSG), H. pylori (+) CSG, and H. pylori (+) chronic atrophic gastritis (CAG) with 10 weeks kimchi. Each amplicon is sequenced on MiSeq of Illumina and the sequence reads were clustered into operational taxonomic units using VSEARCH and the Chao, Simpson, and Shannon Indices. Though significant difference in α- or β-diversity was not seen in three groups, kimchi intake led to significant diversity of fecal microbiome. As results, Klebsiella, Enterococcus, Ruminococcaceae, Streptococcus, Roseburia, and Clostirdiumsensu were significantly increased in H. pylori (+) CAG, while Akkermansia, Citrobacter, and Lactobacillus were significantly decreased in H. pylori (+) CAG. With 10 weeks of kimchi administration, Bifidobacterium, Lactobacillus, and Ruminococcus were significantly increased in H. pylori (+) CAG, whereas Bacteroides, Subdoligranulum, and Eubacterium coprostanolines were significantly decreased in H. pylori (-) CAG. 10 weeks of kimchi intake significantly improved pepsinogen I/II ratio (p<0.01) with significant decreases in interleukin-1β. Conclusively, fermented kimchi significantly changed fecal microbiota to mitigate H. pylori-associated atrophic gastritis.
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Affiliation(s)
- Jong Min Park
- Daejeon University School of Oriental Medicine, Daehak-ro 62, Dong-gu, Daejeon 34520, Korea
| | | | | | | | | | - Seong Jin Kim
- Medpacto Research Institute, Medpacto, Myungdal-ro 92, Seocho-gu, Seoul 06668, Korea
| | - Ki Baik Hahm
- Medpacto Research Institute, Medpacto, Myungdal-ro 92, Seocho-gu, Seoul 06668, Korea
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-ro, Bundang-gu, Seongnam 13497, Korea
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18
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Park JM, Lee WH, Seo H, Oh JY, Lee DY, Kim SJ, Hahm KB. Fecal microbiota changes with fermented kimchi intake regulated either formation or advancement of colon adenoma. J Clin Biochem Nutr 2021. [PMID: 33879965 DOI: 10.3164/jcbn.20.121] [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: 11/22/2022] Open
Abstract
Gut bacteria might contribute in early stage of colorectal cancer through the development and advancement of colon adenoma, by which exploring either beneficial bacteria, which are decreased in formation or advancement of colon adenoma and harmful bacteria, which are increased in advancement of colon adenoma may result in implementation of dietary interventions or probiotic therapies to functional means for prevention. Korean fermented kimchi is one of representative probiotic food providing beneficiary microbiota and exerting significant inhibitory outcomes in both APC/Min+ polyposis model and colitis-associated cancer. Based on these backgrounds, we performed clinical trial to document the changes of fecal microbiota in 32 volunteers with normal colon, simple adenoma, and advanced colon adenoma with 10 weeks of fermented kimchi intake. Each amplicon is sequenced on MiSeq of Illumina and the sequence reads were clustered into Operational Taxonomic Units using VSEARCH and the Chao Indices, an estimator of richness of taxa per individual, were estimated to measure the diversity of each sample. Though significant difference in α or β diversity was not seen between three groups, kimchi intake significantly led to significant diversity of fecal microbiome. After genus analysis, Acinobacteria, Cyanobacteria, Clostridium sensu, Turicibacter, Gastronaeophillales, H. pittma were proven to be increased in patients with advanced colon adenoma, whereas Enterococcua Roseburia, Coryobacteriaceau, Bifidobacterium spp., and Akkermansia were proven to be significantly decreased in feces from patients with advanced colon adenoma after kimchi intake. Conclusively, fermented kimchi plentiful of beneficiary microbiota can afford significant inhibition of either formation or advancement of colon adenoma.
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Affiliation(s)
- Jong Min Park
- College of Oriental Medicine, Daejeon University School of Oriental Medicine, Daehak-ro 62, Dong-gu, Daejeon 34520, Korea
| | | | | | - Ji Young Oh
- CJ Food Research Center, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | - Dong Yoon Lee
- CJ Food Research Center, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | - Seong Jin Kim
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea
| | - Ki Baik Hahm
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea.,Medpacto Research Institute, Medpacto Inc., 92, Myeongdal-ro, Seocho-gu, Seoul 06668, Korea
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19
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Seong GH, Yun DK, Shon U, Park MJ, Park BC, Kim MH, Lee DY. A Case of Pityriasis Lichenoides et Varioliformis Acuta-Like Eruption Developed after Pembrolizumab Treatment for Invasive Thymoma. Ann Dermatol 2020; 33:94-96. [PMID: 33911821 PMCID: PMC7875226 DOI: 10.5021/ad.2021.33.1.94] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/10/2019] [Revised: 01/29/2020] [Accepted: 02/11/2020] [Indexed: 11/08/2022] Open
Affiliation(s)
- Gi Hyun Seong
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Dea Kwan Yun
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Uri Shon
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Myeong Jin Park
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Byung Cheol Park
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Myung Hwa Kim
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
| | - Dong Yoon Lee
- Department of Dermatology, College of Medicine, Dankook University, Cheonan, Korea
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20
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Park JM, Lee WH, Seo H, Oh JY, Lee DY, Kim SJ, Hahm KB. Fecal microbiota changes with fermented kimchi intake regulated either formation or advancement of colon adenoma. J Clin Biochem Nutr 2020; 68:139-148. [PMID: 33879965 DOI: 10.3164/jcbn.20-121] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 07/29/2020] [Accepted: 09/16/2020] [Indexed: 12/14/2022] Open
Abstract
Gut bacteria might contribute in early stage of colorectal cancer through the development and advancement of colon adenoma, by which exploring either beneficial bacteria, which are decreased in formation or advancement of colon adenoma and harmful bacteria, which are increased in advancement of colon adenoma may result in implementation of dietary interventions or probiotic therapies to functional means for prevention. Korean fermented kimchi is one of representative probiotic food providing beneficiary microbiota and exerting significant inhibitory outcomes in both APC/Min+ polyposis model and colitis-associated cancer. Based on these backgrounds, we performed clinical trial to document the changes of fecal microbiota in 32 volunteers with normal colon, simple adenoma, and advanced colon adenoma with 10 weeks of fermented kimchi intake. Each amplicon is sequenced on MiSeq of Illumina and the sequence reads were clustered into Operational Taxonomic Units using VSEARCH and the Chao Indices, an estimator of richness of taxa per individual, were estimated to measure the diversity of each sample. Though significant difference in α or β diversity was not seen between three groups, kimchi intake significantly led to significant diversity of fecal microbiome. After genus analysis, Acinobacteria, Cyanobacteria, Clostridium sensu, Turicibacter, Gastronaeophillales, H. pittma were proven to be increased in patients with advanced colon adenoma, whereas Enterococcua Roseburia, Coryobacteriaceau, Bifidobacterium spp., and Akkermansia were proven to be significantly decreased in feces from patients with advanced colon adenoma after kimchi intake. Conclusively, fermented kimchi plentiful of beneficiary microbiota can afford significant inhibition of either formation or advancement of colon adenoma.
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Affiliation(s)
- Jong Min Park
- College of Oriental Medicine, Daejeon University School of Oriental Medicine, Daehak-ro 62, Dong-gu, Daejeon 34520, Korea
| | | | | | - Ji Young Oh
- CJ Food Research Center, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | - Dong Yoon Lee
- CJ Food Research Center, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | - Seong Jin Kim
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea
| | - Ki Baik Hahm
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea.,Medpacto Research Institute, Medpacto Inc., 92, Myeongdal-ro, Seocho-gu, Seoul 06668, Korea
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21
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Han YM, A Kang E, Min Park J, Young Oh J, Yoon Lee D, Hye Choi S, Baik Hahm K. Dietary intake of fermented kimchi prevented colitis-associated cancer. J Clin Biochem Nutr 2020; 67:263-273. [PMID: 33293767 PMCID: PMC7705092 DOI: 10.3164/jcbn.20-77] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 05/12/2020] [Accepted: 05/31/2020] [Indexed: 12/12/2022] Open
Abstract
Kimchi is composed of various chemopreventive phytochemicals and profuse probiotics, defining kimchi as probiotic foods. Concerns had increased on the modulation of intestinal microbiota on various kinds of systemic diseases. Under the hypothesis that dietary intake of kimchi can be ideal intervention for either ameliorating colitis or preventing colitic cancer, we performed the study to validate the efficolitic cancery of fermented kimchi on preventing colitic cancer. Using azoxymethane-initiated and dextran sulfate sodium-promoted colitic cancer models, we have administrated fermented or non-fermented kimchi to modulate colitic cancer preemptively. Detailed molecular mechanisms were explored. Preemptive administration of fermented kimchi significantly afforded colitic cancer prevention through attenuating inflammasomes (IL-18, IL-1β, caspase-1), enhancing antioxidative (NQO1, GST-π), imposing anti-proliferative (Bax, caspase-3, β-catenin), and affording cytoprotective actions (HSP70, 15-PGDH), while non-fermented kimchi did not prevent colitic cancer. Special recipe cancer preventive kimchi (cpkimchi) was more effective compared to standard recipe fermented kimchi (p<0.01), while non-fermented kimchi (kimuchi) worsened colitic cancer development, telling the importance of fermentation in cancer prevention. Repression of NF-kB p65, induction of tumor suppressive 15-PGDH, and inactivation of ERK1/2 by cpkimchi contributed to colitic cancer prevention. Dietary intake of cpkimchi ameliorated colitis and prevented colitic cancer via concerted anti-inflammatory, antioxidative, and anti-mutagenic actions.
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Affiliation(s)
- Young-Min Han
- Western Seoul Center, Korea Basic Science Institute, University-Industry Cooperate Building, 150 Bugahyeon-ro, Seodaemun-gu, Seoul, 03759, Korea
| | - Eun A Kang
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea
| | - Jong Min Park
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea
| | - Ji Young Oh
- CJ Food Research Center, CJ Blossome Park, Gwangyo-ro, Yeongtong-gu, Suwon, 16495, Korea
| | - Dong Yoon Lee
- CJ Food Research Center, CJ Blossome Park, Gwangyo-ro, Yeongtong-gu, Suwon, 16495, Korea
| | - Seung Hye Choi
- CJ Food Research Center, CJ Blossome Park, Gwangyo-ro, Yeongtong-gu, Suwon, 16495, Korea
| | - Ki Baik Hahm
- CHA Cancer Preventive Research Center, CHA Bio Complex, 330 Pangyo-dong, Bundang-gu, Seongnam, 13497, Korea.,Medpacto Research Institute, Medpacto Inc., 92, Myeongdal-ro, Seocho-gu, Seoul, Korea
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22
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Yun MJ, Sim YH, Lee DY, Cha SI. Omni-directional light capture in PERC solar cells enhanced by stamping hierarchical structured silicone encapsulation that mimics leaf epidermis. RSC Adv 2020; 10:34837-34846. [PMID: 35514385 PMCID: PMC9056853 DOI: 10.1039/d0ra03378b] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/28/2020] [Indexed: 11/21/2022] Open
Abstract
Conventional crystalline silicon solar cell photovoltaic module technology requires much more development due to the challenges of efficiency loss and reliability problems such as browning damage. As an alternative to conventional ethylene-vinyl acetate (EVA)-glass encapsulation, silicone-based encapsulation is a promising innovation. Added to the many advantages of silicone based encapsulation for Si solar cells, here we present surface modification of silicone encapsulation with hierarchical structures inspired by leaf epidermis structures that improve light capture and hydrophobicity of the module surface using a simple, large-area silane and ozone treatment technique. The hierarchical structures comprise tens-of-micrometer-scale hills, valleys, and bump structures and sub-micrometer-scale wave patterns; the combination of these surface structures improved light transmission, light haze, and the wetting angle. These synergistic structures improve efficiency under vertical illumination compared to a bare cell, which is significant considering the efficiency loss in conventional EVA-glass encapsulation from those of bare cells. Furthermore, the enhancement increased the angle of incidence and improved the omni-directional performance so that electrical energy was generated more efficiently. We demonstrated that the modification of module surfaces by mimicking leaf epidermis structures yields considerable benefits, and further studies are expected to optimize this structure and identify the underlying principles for technological innovations based on silicone encapsulation. Hierarchical patterns inspired by leaf epidermis structures were applied to PDMS prior to the encapsulation of PERC solar cells. Omni-directional electricity production was enhanced by hierarchical patterns capturing utilizing vertical and oblique light.![]()
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Affiliation(s)
- Min Ju Yun
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute Korea
| | - Yeon Hyang Sim
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute Korea .,Department of Electro-functionality Materials Engineering, University of Science and Technology Korea
| | - Dong Yoon Lee
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute Korea
| | - Seung I Cha
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute Korea .,Department of Electro-functionality Materials Engineering, University of Science and Technology Korea
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23
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Shon U, Yun DK, Seong GH, Park BC, Kim MH, Lee DY. CD4/CD8 double-negative early-stage mycosis fungoides with CD30 expression. J Cutan Pathol 2020; 48:587-589. [PMID: 32789870 DOI: 10.1111/cup.13846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/27/2020] [Accepted: 08/05/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Uri Shon
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Dea Kwan Yun
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Gi Hyun Seong
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Byung Cheol Park
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Myung Hwa Kim
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Dong Yoon Lee
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
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24
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Sim YH, Yun MJ, Cha SI, Lee DY. Fractal solar cell array for enhanced energy production: applying rules underlying tree shape to photovoltaics. Proc Math Phys Eng Sci 2020; 476:20200094. [PMID: 32831609 DOI: 10.1098/rspa.2020.0094] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/05/2020] [Indexed: 11/12/2022] Open
Abstract
Plants and photovoltaics share the same purpose as harvesting sunlight. Therefore, botanical studies could lead to new breakthroughs in photovoltaics. However, the basic mechanism of photosynthesis is different to semiconductor-based photovoltaics and the gap between photosynthesis and solar cells must be bridged before we can apply the botanical principles to photovoltaics. In this study, we analysed the role of the fractal structures found in plants in light harvesting based on a simplified model, rotated the structures by 90° and applied them to fractal-structured photovoltaic Si solar cell arrays. Adoption of botanically inspired fractal structures can result in solar cell arrays with omnidirectional properties, and in this case, yielded a 25% enhancement in electric energy production. The fractal structure used in this study was two-dimensional and symmetric; investigating and optimizing three-dimensional asymmetric fractal structures would further enhance the performance of photovoltaics. Furthermore, this study represents only the first step towards the development of a new type of photovoltaics based on botanical principles, and points to further aspects of botanical knowledge that could be exploited, in addition to plant fractal structures. For example, leaf anatomy, phyllotaxis and chloroplastic mechanisms could be applied to the design of new types of photovoltaics.
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Affiliation(s)
- Yeon Hyang Sim
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, Korea.,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, Korea
| | - Min Ju Yun
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, Korea
| | - Seung I Cha
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, Korea.,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, Korea
| | - Dong Yoon Lee
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, Korea.,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, Korea
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Eom H, Hwang IH, Lee DY, Lee SM, Kim SS. Preparation of Liquid-Phase Reduction Method-Based Pt/TiO 2 Catalyst and Reaction Characteristics during HCHO Room-Temperature Oxidation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02059] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hanki Eom
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - In-hyuck Hwang
- Department of Environmental Energy Engineering, Graduate School, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Dong Yoon Lee
- Department of Environmental Energy Engineering, Graduate School, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Sang Moon Lee
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Sung Su Kim
- Department of Environmental Energy Engineering, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
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26
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Jung J, Um J, Lee D, Kim YW, Lee DY, Pak HK, Kahng B. Entropy production and fluctuation theorems on complex networks. Chaos 2020; 30:053125. [PMID: 32491892 DOI: 10.1063/1.5143031] [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] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Entropy production (EP) is a fundamental quantity useful for understanding irreversible process. In stochastic thermodynamics, EP is more evident in probability density functions of trajectories of a particle in the state space. Here, inspired by a previous result that complex networks can serve as state spaces, we consider a data packet transport problem on complex networks. EP is generated owing to the complexity of pathways as the packet travels back and forth between two nodes along the same pathway. The total EPs are exactly enumerated along all possible shortest paths between every pair of nodes, and the functional form of the EP distribution is proposed based on our numerical results. We confirm that the EP distribution satisfies the detailed and integral fluctuation theorems. Our results should be pedagogically helpful for understanding trajectory-dependent EP in stochastic processes and exploring nonequilibrium fluctuations associated with the entanglement of dividing and merging among the shortest pathways in complex networks.
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Affiliation(s)
- Jaewoo Jung
- CCSS, CTP and Department of Physics and Astronomy, Seoul National University, Seoul 08826, South Korea
| | - Jaegon Um
- CCSS, CTP and Department of Physics and Astronomy, Seoul National University, Seoul 08826, South Korea
| | - Deokjae Lee
- CCSS, CTP and Department of Physics and Astronomy, Seoul National University, Seoul 08826, South Korea
| | - Yong W Kim
- Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015, USA
| | - D Y Lee
- Center for Soft and Living Matter, Institute for Basic Science, Ulsan 44919, South Korea
| | - H K Pak
- Center for Soft and Living Matter, Institute for Basic Science, Ulsan 44919, South Korea
| | - B Kahng
- CCSS, CTP and Department of Physics and Astronomy, Seoul National University, Seoul 08826, South Korea
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27
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Shon U, Kim MH, Lee DY, Kim SH, Park BC. The effect of intradermal botulinum toxin on androgenetic alopecia and its possible mechanism. J Am Acad Dermatol 2020; 83:1838-1839. [PMID: 32339707 DOI: 10.1016/j.jaad.2020.04.082] [Citation(s) in RCA: 12] [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] [Received: 06/16/2019] [Revised: 04/04/2020] [Accepted: 04/16/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Uri Shon
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Myung Hwa Kim
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Dong Yoon Lee
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Se Hwan Kim
- Department of Biomedical Engineering, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Byung Cheol Park
- Department of Dermatology, College of Medicine, Dankook University, Cheonan-si, South Korea.
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28
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Kominoski JS, Gaiser EE, Castañeda-Moya E, Davis SE, Dessu SB, Julian P, Lee DY, Marazzi L, Rivera-Monroy VH, Sola A, Stingl U, Stumpf S, Surratt D, Travieso R, Troxler TG. Disturbance legacies increase and synchronize nutrient concentrations and bacterial productivity in coastal ecosystems. Ecology 2020; 101:e02988. [PMID: 31958144 PMCID: PMC7317527 DOI: 10.1002/ecy.2988] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 11/27/2019] [Accepted: 12/20/2019] [Indexed: 11/12/2022]
Abstract
Long‐term ecological research can resolve effects of disturbance on ecosystem dynamics by capturing the scale of disturbance and interactions with environmental changes. To quantify how disturbances interact with long‐term directional changes (sea‐level rise, freshwater restoration), we studied 17 yr of monthly dissolved organic carbon (DOC), total nitrogen (TN), and phosphorus (TP) concentrations and bacterioplankton productivity across freshwater‐to‐marine estuary gradients exposed to multiple disturbance events (e.g., droughts, fire, hurricanes, and low‐temperature anomalies) and long‐term increases in water levels. By studying two neighboring drainages that differ in hydrologic connectivity, we additionally tested how disturbance legacies are shaped by hydrologic connectivity. We predicted that disturbance events would interact with long‐term increases in water levels in freshwater and marine ecosystems to increase spatiotemporal similarity (i.e., synchrony) of organic matter, nutrients, and microbial activities. Wetlands along the larger, deeper, and tidally influenced Shark River Slough (SRS) drainage had higher and more variable DOC, TN, and TP concentrations than wetlands along the smaller, shallower, tidally restricted Taylor River Slough/Panhandle (TS/Ph) drainage. Along SRS, DOC concentrations declined with proximity to coast, and increased in magnitude and variability following drought and flooding in 2015 and a hurricane in 2017. Along TS/Ph, DOC concentrations varied by site (higher in marine than freshwater wetlands) but not year. In both drainages, increases in TN from upstream freshwater marshes occurred following fire in 2008 and droughts in 2010 and 2015, whereas downstream increases in TP occurred with coastal storm surge from hurricanes in 2005 and 2017. Decreases in DOC:TN and DOC:TP were explained by increased TN and TP. Increases in bacterioplankton productivity occurred throughout both drainages following low‐temperature events (2010 and 2011) and a hurricane (2017). Long‐term TN and TP concentrations and bacterioplankton productivity were correlated (r > 0.5) across a range of sampling distances (1–50 km), indicating spatiotemporal synchrony. DOC concentrations were not synchronized across space or time. Our study advances disturbance ecology theory by illustrating how disturbance events interact with long‐term environmental changes and hydrologic connectivity to determine the magnitude and extent of disturbance legacies. Understanding disturbance legacies will enhance prediction and enable more effective management of rapidly changing ecosystems.
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Affiliation(s)
- John S Kominoski
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Evelyn E Gaiser
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Edward Castañeda-Moya
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | | | - Shimelis B Dessu
- Department of Earth and Environment & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Paul Julian
- Whitney Laboratory for Marine Bioscience, University of Florida, Gainesville, Florida, 32611, USA
| | - Dong Yoon Lee
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Luca Marazzi
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Victor H Rivera-Monroy
- Department of Oceanography and Coastal Sciences, College of the Coast and the Environment, Louisiana State University, Baton Rouge, Louisiana, 70803, USA
| | - Andres Sola
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Ulrich Stingl
- Institute of Food and Agricultural Sciences, University of Florida, Davie, Florida, 33314, USA
| | - Sandro Stumpf
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | | | - Rafael Travieso
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
| | - Tiffany G Troxler
- Department of Biological Sciences & Institute of Environment/Southeast Environmental Research Center, Florida International University, Miami, Florida, 33199, USA
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Eom H, Jang YH, Lee DY, Kim SS, Lee SM, Cho EM. Optimization of a hybrid sludge drying system with flush drying and microwave drying technology. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.05.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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An JM, Kang EA, Han YM, Oh JY, Lee DY, Choi SH, Kim DH, Hahm KB. Dietary intake of probiotic kimchi ameliorated IL-6-driven cancer cachexia. J Clin Biochem Nutr 2019; 65:109-117. [PMID: 31592205 DOI: 10.3164/jcbn.19-10] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 02/16/2019] [Indexed: 01/01/2023] Open
Abstract
Cancer cachexia is a syndrome accompanying weight loss, skeletal muscle atrophy, and loss of adipose tissue in patients with advanced cancer. Since interleukin-6 (IL-6) is one of core mediators causing cancer cachexia and kimchi can modulate IL-6 response, we hypothesized dietary intake of kimchi can ameliorate cancer cachexia. In this study, we studied preemptive administration of kimchi can ameliorate mouse colon carcinoma cells colon (C26) adenocarcinoma-induced cancer cachexia and explored anti-cachexic mechanisms of kimchi focused on the changes of muscle atrophy, cachexic inflammation, and catabolic catastrophe. As results, dietary intake of kimchi significantly attenuated the development of cancer cachexia, presented with lesser weight loss, higher muscle preservation as well as higher survival from cancer cachexia in mice. Starting from significant inhibition of IL-6 and its signaling, kimchi afforded significant inhibition of muscle specific ubiquitin-proteasome system including inhibition of atrogin-1 and muscle ring finger protein-1 (MuRF-1) with other muscle related genes including mitofusin-2 (Mfn-2) and PGC-1α. Significant inhibition of lipolysis gene such as adipose triglyceride lipase (ATGL) and hormone-sensitive ligase (HSL) accompanied with significant induction of fatty acid synthase (FAS) and sterol response element binding protein 1 (SREBP1) was achieved with kimchi. As gene regulation, IL-6 and their receptor as well as Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3) were significantly attenuated with kimchi. In conclusion, dietary intake of cancer preventive kimchi can be an anticipating option to ameliorate cancer cachexia via suppressive action of IL-6 accompanied with decreased muscle atrophy and lipolysis.
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Affiliation(s)
- Jeong Min An
- CHA Cancer Prevention Research Center, CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam, Korea
| | - Eun A Kang
- CHA Cancer Prevention Research Center, CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam, Korea
| | - Young-Min Han
- CHA Cancer Prevention Research Center, CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam, Korea
| | - Ji Young Oh
- CJ Food, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | - Dong Yoon Lee
- CJ Food, Gwanggyo-ro, Yeongtong-gu, Suwon 16495, Korea
| | | | - Duk Hwan Kim
- Digestive Disease Center, CHA University Bundang Medical Center, 59 Yatap-ro, Bundang-gu, Seognam 13496, Korea
| | - Ki Baik Hahm
- CHA Cancer Prevention Research Center, CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam, Korea.,Digestive Disease Center, CHA University Bundang Medical Center, 59 Yatap-ro, Bundang-gu, Seognam 13496, Korea
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31
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Yun MJ, Sim YH, Cha SI, Lee DY. Leaf Anatomy and 3-D Structure Mimic to Solar Cells with light trapping and 3-D arrayed submodule for Enhanced Electricity Production. Sci Rep 2019; 9:10273. [PMID: 31311975 PMCID: PMC6635402 DOI: 10.1038/s41598-019-46748-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 02/12/2019] [Accepted: 07/02/2019] [Indexed: 11/27/2022] Open
Abstract
Plant leaves are efficient light scavengers. We take a ‘botanical approach’ toward the creation of next-generation photovoltaic cells for urban environments. Our cells exhibit high energy conversion efficiency under indirect weak illumination. We used two features of leaves to improve dye-sensitized solar cells (DSSCs). Leaves feature a cuticle, a covering epidermis, and palisade and spongy cells. Leaves are also carefully arrayed within the plant crown. To mimic these features, we first created a light-trapping layer on top of the solar cells and microscale-patterned the photoanodes. Then we angled the three-dimensional DSSCs to create submodules. These simple mimics afforded a 50% enhancement of simulated daily electricity production. Our new design optimizes light distribution, the photoanode structure, and the DSSC array (by creating modules), greatly improving cell performance.
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Affiliation(s)
- Min Ju Yun
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, South Korea
| | - Yeon Hyang Sim
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, South Korea.,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, South Korea
| | - Seung I Cha
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, South Korea. .,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, South Korea.
| | - Dong Yoon Lee
- Energy Conversion Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute, Changwon, South Korea.,Department of Electro-functionality Materials Engineering, University of Science and Technology, Changwon, South Korea
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32
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Choi WI, Lee DY, Choi HG, Lee CW. Lung Cancer development and mortality in interstitial lung disease with and without connective tissue diseases: a five-year Nationwide population-based study. Respir Res 2019; 20:117. [PMID: 31182103 PMCID: PMC6558868 DOI: 10.1186/s12931-019-1094-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 03/21/2019] [Accepted: 06/05/2019] [Indexed: 12/20/2022] Open
Abstract
Background Connective tissue disease associated with interstitial lung disease (CTD-ILD) and interstitial lung disease (ILD) alone have same pathological and imaging backgrounds. However, the differences between lung cancer development and the mortality risk between these two conditions are unclear. Incidence of primary lung cancer and all-cause mortality were studied between interstitial lung disease patients with and without connective tissue disease. Methods Data were extracted from the Korean National Health Insurance Research Database in 2009. A total of 12,787 cases of ILD without idiopathic pulmonary fibrosis and 2491 cases of CTD-ILD were diagnosed in 2009. The cohort was followed up until June 30, 2014. Incident lung cancers and all-cause mortality were ascertained. Results The overall incidence of lung cancer was 165.7 and 161.8 per 10,000 person-years in the CTD-ILD and ILD-only, respectively (rate ratio, 1.08; 95% confidence interval, 0.89–1.30). CTD-ILD patients in the 40–49 and 50–59 years old age groups had lung cancer incidence rates of 92.5 and 139.2, which were 2.0 and 1.7 times higher than those in the ILD-only, respectively. All-cause mortality was significantly higher in the CTD-ILD group compared to ILD-only group in patients aged 50–79 years. All-cause mortality of women in the 50–59, 60–69 and 70–79 age groups was 2.0, 1.8, and 1.4 times higher in the CTD-ILD group than in the ILD-only group, respectively. Conclusions CTD-ILD patients aged < 60 years had a higher lung cancer incidence than ILD-only patients in the same age group. Furthermore, CTD-ILD patients aged 50–79 years had higher all-cause mortality than ILD-only patients in the same age group.
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Affiliation(s)
- Won-Il Choi
- Department of Internal Medicine, Keimyung University Dongsan Hospital, 56 Dalseong-ro, Jung-gu, Daegu, 41931, Republic of Korea. .,Department of Internal Medicine, Keimyung University Dongsan Hospital, 56 Dalseong-ro, Jung-gu, Daegu, 700-712, Republic of Korea.
| | - Dong Yoon Lee
- Department of Internal Medicine, Keimyung University Dongsan Hospital, 56 Dalseong-ro, Jung-gu, Daegu, 41931, Republic of Korea
| | - Hyun-Gi Choi
- Department of Chemistry, Konkuk University, Seoul, 05029, Republic of Korea
| | - Choong Won Lee
- Department of Occupational and Environmental Medicine, Sungso Hospital, Andong, 99 Seodongmun-ro, Andong, Gyeongsangbuk-do, 36690, Republic of Korea
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33
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Kim KS, Kang SY, Park CK, Kim GA, Park SY, Cho H, Seo CW, Lee DY, Lim HW, Lee HW, Park JE, Woo TH, Oh JE. A Compressed-Sensing Based Blind Deconvolution Method for Image Deblurring in Dental Cone-Beam Computed Tomography. J Digit Imaging 2018; 32:478-488. [PMID: 30238344 DOI: 10.1007/s10278-018-0120-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
In cone-beam computed tomography (CBCT), reconstructed images are inherently degraded, restricting its image performance, due mainly to imperfections in the imaging process resulting from detector resolution, noise, X-ray tube's focal spot, and reconstruction procedure as well. Thus, the recovery of CBCT images from their degraded version is essential for improving image quality. In this study, we investigated a compressed-sensing (CS)-based blind deconvolution method to solve the blurring problem in CBCT where both the image to be recovered and the blur kernel (or point-spread function) of the imaging system are simultaneously recursively identified. We implemented the proposed algorithm and performed a systematic simulation and experiment to demonstrate the feasibility of using the algorithm for image deblurring in dental CBCT. In the experiment, we used a commercially available dental CBCT system that consisted of an X-ray tube, which was operated at 90 kVp and 5 mA, and a CMOS flat-panel detector with a 200-μm pixel size. The image characteristics were quantitatively investigated in terms of the image intensity, the root-mean-square error, the contrast-to-noise ratio, and the noise power spectrum. The results indicate that our proposed method effectively reduced the image blur in dental CBCT, excluding repetitious measurement of the system's blur kernel.
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Affiliation(s)
- K S Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Kang
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - C K Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - G A Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Hyosung Cho
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
| | - C W Seo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - D Y Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - T H Woo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Oh
- Division of Convergence Technology, National Cancer Center, Goyang, 10408, Republic of Korea
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Hwang JY, Byun MS, Choe YM, Lee JH, Yi D, Yoon HN, Park IK, Lee YJ, Lee DY. 0249 Association Between Sleep-Wake Cycle And Brain Cortical Thickness In Young Adults. Sleep 2018. [DOI: 10.1093/sleep/zsy061.248] [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: 11/13/2022] Open
Affiliation(s)
- J Y Hwang
- Seoul National University College of Medicine, Seoul, KOREA, REPUBLIC OF
| | - M S Byun
- Institute of Human Behavioral Medicine, Medical Research Center Seoul National University, Seoul, KOREA, REPUBLIC OF
| | - Y M Choe
- Department of Psychiatry, Ulsan University Hospital, Ulsan, KOREA, REPUBLIC OF
| | - J H Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, KOREA, REPUBLIC OF
| | - D Yi
- Institute of Human Behavioral Medicine, Medical Research Center Seoul National University, Seoul, KOREA, REPUBLIC OF
| | - H N Yoon
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, KOREA, REPUBLIC OF
| | - I K Park
- Center for Sleep and Chronobiology, Department of Psychiatry, Seoul National University Hospital, Seoul, KOREA, REPUBLIC OF
| | - Y J Lee
- Center for Sleep and Chronobiology, Department of Psychiatry, Seoul National University Hospital, Seoul, KOREA, REPUBLIC OF
| | - D Y Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, KOREA, REPUBLIC OF
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Kim YS, Lee HJ, Park JM, Han YM, Kangwan N, Oh JY, Lee DY, Hahm KB. Targeted molecular ablation of cancer stem cells for curing gastrointestinal cancers. Expert Rev Gastroenterol Hepatol 2017; 11:1059-1070. [PMID: 28707966 DOI: 10.1080/17474124.2017.1356224] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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] [Indexed: 02/07/2023]
Abstract
Abundance of the ATPase-binding cassette (ABC) transporters and deranged self-renewal pathways characterize the presence of cancer stem cells (CSCs) in gastrointestinal cancers (GI cancers), which play crucial roles in tumorigenesis, chemotherapy resistance, tumor recurrence, and cancer metastasis. Therefore, in order to ensure high cure rates, chemoquiescence, CSCs should be ablated. Recent advances in either understanding CSCs or biomarker identification enable scientists to develop techniques for ablating CSCs and clinicians to provide cancer cure, especially in GI cancers characterized by inflammation-driven carcinogenesis. Areas covered: A novel approach to ablate CSCs in GI cancers, including esophageal, gastric, and colon cancers, is introduced along with explored underlying molecular mechanisms. Expert commentary: Though CSC ablation is still in the empirical stages and not in clinical practice, several strategies for ablating CSCs in GI cancers had been published, proton-pump inhibitors (PPIs) that regulate the membrane-bound ABC transporters, which underlie drug resistance; chloroquine (CQ) that inhibits autophagy, which is responsible for tumor survival; Hedgehog/Wnt/Notch inhibitors that influence the underlying stem-cell growth, and some natural products including Korean red ginseng, cancer-preventive kimchi, Artemisia extract, EGCG from green tea, and walnut extracts.
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Affiliation(s)
- Yong Seok Kim
- a Department of Biochemistry and Molecular Biology , Hanyang University College of Medicine , Seoul , Korea
| | - Ho Jae Lee
- b Department of Biochemistry , Gachon University College of Medicine , Incheon , Korea
| | - Jong-Min Park
- c CHA Cancer Prevention Research Center , CHA University , Seongnam , Korea
| | - Young-Min Han
- c CHA Cancer Prevention Research Center , CHA University , Seongnam , Korea
| | - Napapan Kangwan
- d Division of Physiology, School of Medical Sciences , University of Phayao , Phayao , Thailand
| | | | | | - Ki Baik Hahm
- a Department of Biochemistry and Molecular Biology , Hanyang University College of Medicine , Seoul , Korea.,c CHA Cancer Prevention Research Center , CHA University , Seongnam , Korea.,f Digestive Disease Center , CHA University Bundang Medical Center , Seongnam , Korea
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Lee YS, Lee Jae W, Choi Doo J, Kim GS, Seo Kyung H, Kim Hyung D, Lee Seung E, Kwon DY, Lee DY. Potentiating Activity of Shikonin with Membrane-permeabilizing agents or ATPase inhibitors against Methicillin-resistant Staphylococcus aureus. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608102] [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: 10/18/2022]
Affiliation(s)
- YS Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - W Lee Jae
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - J Choi Doo
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - GS Kim
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - H Seo Kyung
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - D Kim Hyung
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - E Lee Seung
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
| | - DY Kwon
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Wonkwang University, Iksan, Jeonbuk, Korea, Republic of (South)
| | - DY Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration (RDA), Eumsung, Chungbuk, Korea, Republic of (South)
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Lee DY, Watson N, Whittem T. Chemical stability of morphine and methadone, and of methadone in combination with acepromazine, medetomidine or xylazine, during prolonged storage in syringes. Aust Vet J 2017; 95:289-293. [PMID: 28749024 DOI: 10.1111/avj.12608] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 08/02/2016] [Accepted: 09/12/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess the chemical and physical stability of morphine and methadone stored in syringes for 12 months and of methadone when mixed with acepromazine, medetomidine or xylazine. METHODS A high-performance liquid chromatography (HPLC) technique was developed and validated for the analysis of morphine and methadone. Morphine and methadone were dispensed into syringes and stored at 25°C/60% relative humidity (RH) and 40°C/75% RH. Solutions containing mixtures of methadone combined with acepromazine, medetomidine or xylazine were stored in syringes at 25°C/60%RH. At initiation, after 1 week and then 1, 3, 6, 9 and 12 months, samples were analysed by HPLC for the quantification of the morphine or methadone. Measured concentrations were assessed as a function of storage time and temperature using linear regression statistics to calculate stability. RESULTS When stored at 40°C/75%RH as pre-dispensed syringes, severe physical and chemical changes were observed after the third month for both morphine and methadone. In contrast, at 25°C/60%RH both drugs remained chemically stable for 12 months, with concentration variations not exceeding a 5% change from initiation as stipulated in VICH stability guidelines. When in combination with acepromazine or xylazine, methadone also remained chemically stable, but the combination with medetomidine failed stability criteria prior to 6 months. Precipitation compromised the physical stability of methadone in all unsealed syringes prior to 9 months' storage. CONCLUSION Pre-dispensing morphine or methadone into unsealed syringes compromises the drugs' physical stability. Mixing of methadone with other drugs can degrade its chemical stability.
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Affiliation(s)
- D Y Lee
- Translational Research and Animal Clinical Trials (TRACTs) Group, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Princes Highway, Werribee 3030, Victoria, Australia
| | - N Watson
- Jurox Pty Ltd, Rutherford, New South Wales, Australia
| | - T Whittem
- Translational Research and Animal Clinical Trials (TRACTs) Group, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Princes Highway, Werribee 3030, Victoria, Australia
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Lee DY, Choi KH, Park SH, Lee JY, Yoon TY. Lobulated Bowen's Disease with a Clear Cell Change. Ann Dermatol 2017; 29:487-490. [PMID: 28761300 PMCID: PMC5500717 DOI: 10.5021/ad.2017.29.4.487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 01/19/2016] [Revised: 11/07/2016] [Accepted: 11/10/2016] [Indexed: 11/08/2022] Open
Abstract
Bowen's disease usually manifests as a slowly enlarging erythematous scaly patch or plaque. An uncommon variant of Bowen's disease showing a verrucous appearance has been reported and a distinct variant with a prominent clear cell change on histopathology, in addition to a verrucous surface change, was also reported. We describe novel form of Bowen's disease having a cerebriform appearance and showing histopathologically a significant clear cell change and propose that the clinical term "lobulated Bowen's disease" would be compatible for the description of this unique clinical variant. From a histopathological point of view, the precise definition and etiopathogenesis of the clear cell change in Bowen's disease should be elucidated.
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Affiliation(s)
- Dong Yoon Lee
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Ki Hwa Choi
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Su Hyun Park
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Ji Yeoun Lee
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Tae Young Yoon
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
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Lee DY, Jee JH, Cho YY, Jang JY, Yu TY, Kim TH, Hong YJ, Hong WJ, Jin SM, Hur KY, Kim JH, Kim SW, Chung JH, Lee MK, Min YK. Serum 25-hydroxyvitamin D cutoffs for functional bone measures in postmenopausal osteoporosis. Osteoporos Int 2017; 28:1377-1384. [PMID: 28188454 DOI: 10.1007/s00198-016-3892-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 12/18/2016] [Indexed: 01/22/2023]
Abstract
UNLABELLED This study sought to determine the minimal serum 25-hydroxyvitamin D [25(OH)D] concentration required to maintain bone health in postmenopausal women with low bone mass. A serum 25(OH)D concentration of 20 ng/mL rather than 30 ng/mL was appropriate for bone health. INTRODUCTION There is no consensus on the minimal serum 25-hydroxyvitamin D [25(OH)D] concentration required to maintain bone health. The aim of this study was to investigate the relationship between 25(OH)D measured via liquid chromatography-mass spectrometry (LC-MS/MS), which is the current gold standard, and biochemical markers of bone turnover, PTH, and bone mineral densitometry (BMD). METHODS The medical records of 750 postmenopausal women newly diagnosed with osteoporosis or osteopenia at Samsung Medical Center from 2009 to 2014 were investigated. Subjects were divided into four groups according to serum 25(OH)D concentration: <10, 10-20, 20-30, and ≥30 ng/mL. Serum concentrations of bone-specific alkaline phosphatase (BS-ALP), carboxy-terminal cross-linking telopeptide of type 1 collagen (CTx), intact PTH (iPTH), and BMD were compared among the four groups using analysis of covariance. Thresholds of 25(OH)D were then assessed using spline plots and locally weighted regression smoothing (LOESS) plots. RESULTS 25(OH)D was negatively correlated with serum BS-ALP, CTx, and iPTH. Only femur neck and total femur BMD had significant positive relationships with 25(OH)D. Cutoff values of 11.9 and 9.7 ng/mL were estimated from the spline plots of femur neck and total femur BMD, respectively. For iPTH, the LOESS plot showed a steep decrease to a serum 25(OH)D concentration of about 20 ng/mL, followed by a plateau. CONCLUSIONS According to this study, a serum 25(OH)D concentration of 20 ng/mL, rather than 30 ng/mL, was appropriate for bone health.
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Affiliation(s)
- D Y Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J H Jee
- Department of Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y Y Cho
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J Y Jang
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - T Y Yu
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - T H Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y J Hong
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - W-J Hong
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S-M Jin
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - K Y Hur
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J H Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S W Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J H Chung
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - M K Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y-K Min
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
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Lee DY, Lee CK, Kim IS. A Comparison of Implants Used in Double Door Laminoplasty : Allogeneic Bone Spacer versus Hydroxyapatite Spacer. J Korean Neurosurg Soc 2016; 59:604-609. [PMID: 27847574 PMCID: PMC5106360 DOI: 10.3340/jkns.2016.59.6.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 06/02/2016] [Accepted: 09/22/2016] [Indexed: 11/27/2022] Open
Abstract
Objective The aim of this study was to compare the clinical and radiological outcomes associated with the use of hydroxyapatite (HA) spacer and allogeneic bone (AB) spacer in laminoplasty. Methods From January 2006 to July 2014, 79 patients with cervical spondylotic myelopathy or ossification of the posterior longitudinal ligament underwent cervical laminoplasty. The radiologic parameters were obtained from plain radiography and three-dimensional computed tomography. All images were taken before and after surgery. Cervical lordosis, spinal canal dimension, fusion between lamina and spacer, and resorption of spacer were checked. Clinical outcomes were assessed using visual analog scale and Japanese Orthopedic Association. Results Double-door laminoplasty was performed on 280 levels : 182 in the HA group and 98 in the AB group. The mean follow-up was 23.1 months (range : 4–69 months). Similar fusion rates were found in these groups (p=0.3). The resorption rate between lamina and spacer was lower in the HA group (p<0.001). During the immediate postoperative period, the canal dimension of both groups increased compared with the results in the preoperative period. However, the canal dimension of the AB group decreased over time compared with that of the HA group (p<0.001). Conclusion Double-door laminoplasty improved the clinical outcomes of both groups. However, the spinal canal dimension in the AB group showed a greater degree of reduction than in the HA group at the final postoperative follow-up. Therefore, we suggest that surgeons consider the use of larger-sized AB spacers in double-door laminoplasties.
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Affiliation(s)
- Dong Yoon Lee
- Department of Neurosurgery, Keimyung University, School of Medicine, Dongsan Medical Center, Daegu, Korea
| | - Chang Kyu Lee
- Department of Neurosurgery, Keimyung University, School of Medicine, Dongsan Medical Center, Daegu, Korea
| | - In-Soo Kim
- Department of Neurosurgery, Keimyung University, School of Medicine, Dongsan Medical Center, Daegu, Korea
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Lhee SH, Kim JW, Jeon JB, Lee DY. PROSPECTIVE RANDOMIZED CLINICAL STUDY FOR THE TREATMENT OF LATERAL EPICONDYLITIS; COMPARISON AMONG PRP (PLATELET-RICH PLASM), PROLOTHERAPY, PHYSIOTHERAPY AND ESWT. Br J Sports Med 2016. [DOI: 10.1136/bjsports-2016-096952.10] [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: 11/04/2022]
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Chen C, Homma A, Mok VCT, Krishnamoorthy E, Alladi S, Meguro K, Abe K, Dominguez J, Marasigan S, Kandiah N, Kim SY, Lee DY, De Silva HA, Yang YH, Pai MC, Senanarong V, Dash A. Alzheimer's disease with cerebrovascular disease: current status in the Asia-Pacific region. J Intern Med 2016; 280:359-74. [PMID: 26992016 DOI: 10.1111/joim.12495] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [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] [Indexed: 01/08/2023]
Abstract
BACKGROUND There is growing awareness of the coexistence of Alzheimer's disease and cerebrovascular disease (AD+CVD), however, due to lack of well-defined criteria and treatment guidelines AD+CVD may be underdiagnosed in Asia. METHODS Sixteen dementia specialists from nine Asia Pacific countries completed a survey in September 2014 and met in November 2014 to review the epidemiology, diagnosis and treatment of AD+CVD in Asia. A consensus was reached by discussion, with evidence provided by published studies when available. RESULTS AD accounts for up to 60% and AD+CVD accounts for 10-20% of all dementia cases in Asia. The reasons for underdiagnosis of AD+CVD include lack of awareness as a result of a lack of diagnostic criteria, misdiagnosis as vascular dementia or AD, lack of diagnostic facilities, resource constraints and cost of investigations. There is variability in the tools used to diagnose AD+CVD in clinical practice. Diagnosis of AD+CVD should be performed in a stepwise manner of clinical evaluation followed by neuroimaging. Dementia patients should be assessed for cognition, behavioural and psychological symptoms, functional staging and instrumental activities of daily living. Neuroimaging should be performed using computed tomography or magnetic resonance imaging. The treatment goals are to stabilize or slow progression as well as to reduce behavioural and psychological symptoms, improve quality of life and reduce disease burden. First-line therapy is usually an acetylcholinesterase inhibitor such as donepezil. CONCLUSION AD+CVD is likely to be under-recognised in Asia. Further research is needed to establish the true prevalence of this treatable and potentially preventable disease.
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Affiliation(s)
- C Chen
- Department of Pharmacology, National University of Singapore, Singapore, Singapore. .,Memory Aging and Cognition Center, National University Health System, Singapore, Singapore.
| | - A Homma
- Research Institute for Dementia Care, Tokyo, Japan
| | - V C T Mok
- Lui Che Woo Institute of Innovative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | | | - S Alladi
- Department of Neurology, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - K Meguro
- Division of Geriatric Behavioral Neurology, CYRIC, Tohoku University, Sendai, Japan
| | - K Abe
- Department of Neurology, Okayama University, Okayama, Japan
| | - J Dominguez
- Memory Center, St Luke's Medical Center, Quezon City, Philippines
| | - S Marasigan
- Department of Neurology and Psychiatry, University of Santo Tomas Hospital, Manila, Philippines
| | - N Kandiah
- Department of Neurology, National Neuroscience Institute and Duke-NUS Singapore, Singapore, Singapore
| | - S Y Kim
- Department of Neurology, Seoul National University College of Medicine, Seoul, Korea.,Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Seoul, Korea
| | - D Y Lee
- Department of Psychiatry, Seoul National University, College of Medicine, Seoul, Korea
| | - H A De Silva
- Clinical Trials Unit, Department of Pharmacology, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.
| | - Y-H Yang
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan.,Master's Program in Neurology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - M-C Pai
- Division of Behavioral Neurology, Department of Neurology, Alzheimer's Disease Research Center, Medical College and Hospital, National Cheng Kung University, Tainan City, Taiwan
| | - V Senanarong
- Division of Neurology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - A Dash
- Eisai Co. Ltd, Mumbai, India
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Kang WC, Ko YG, Oh PC, Shin EK, Park CH, Choi D, Youn YN, Lee DY. Comparison of Total Arch and Partial Arch Transposition During Hybrid Endovascular Repair for Aortic Arch Disease. Eur J Vasc Endovasc Surg 2016; 52:173-8. [PMID: 27346445 DOI: 10.1016/j.ejvs.2016.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 01/28/2016] [Accepted: 06/01/2016] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Total arch transposition (TAT) during hybrid endovascular repair for aortic arch disease is believed to allow a better landing zone, but also to be associated with higher peri-operative mortality than partial arch transposition (PAT). Information on this issue is limited. METHOD This study was a retrospective analysis. All 53 consecutive patients with aortic arch disease (41 males, mean age 65.0 years) who underwent hybrid endovascular repair with TAT (zone 0, n=20) or PAT (zone 1 or 2, n=33) from 2008 to 2014 were analyzed retrospectively. The peri-operative and late outcomes of these two groups were compared. RESULTS Baseline characteristics, including EuroSCORE II results, were similar in the two groups. After procedures, peri-operative mortalities and stroke rates were similar in the two groups (5.0% vs. 9.1%, p=1.000, and 10.0% vs. 6.1%, p=.627). Interestingly, all four strokes occurred in patients with a type III aortic arch irrespective of transposition type. Primary success rates (80.0% vs. 69.7%, p=.527) and type I endoleak incidences (20.0% vs. 27.3%, p=.744) were not significantly different. During follow up (mean duration 36.9 months), overall survival (89.7% vs. 87.4% at 1 year and 89.7% vs. 79.3% at 3 years; p=.375) and re-intervention free survival rates (78.6% vs. 92.0% at 1 year; 72.0% vs. 62.2% at 3 years, p=.872) were similar in the two groups. CONCLUSION Morbidity and mortality were high within the first year of hybrid endovascular therapy for aortic arch disease, implying that candidates for hybrid procedures need to be selected carefully. Hybrid endovascular repair with TAT was found to have peri-operative mortality, stroke, and long-term survival rates comparable with PAT, so hybrid endovascular repair may be considered, irrespective of type of arch reconstruction, when clinically indicated.
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Affiliation(s)
- W C Kang
- Cardiology, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Y-G Ko
- Cardiothoracic Surgery, Gachon University Gil Medical Center, Incheon, Republic of Korea.
| | - P C Oh
- Cardiology, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - E K Shin
- Cardiology, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - C-H Park
- Cardiology, Severance Cardiovascular Hospital, Yonsei University, Seoul, Republic of Korea
| | - D Choi
- Cardiothoracic Surgery, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Y N Youn
- Cardiothoracic Surgery, Severance Cardiovascular Hospital, Yonsei University, Seoul, Republic of Korea
| | - D Y Lee
- Radiology, Severance Cardiovascular Hospital, Yonsei University, Seoul, Republic of Korea
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Shin JW, Chu K, Shin SA, Jung KH, Lee ST, Lee YS, Moon J, Lee DY, Lee JS, Lee DS, Lee SK. Clinical Applications of Simultaneous PET/MR Imaging Using (R)-[11C]-Verapamil with Cyclosporin A: Preliminary Results on a Surrogate Marker of Drug-Resistant Epilepsy. AJNR Am J Neuroradiol 2015; 37:600-6. [PMID: 26585254 DOI: 10.3174/ajnr.a4566] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 08/17/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The development of resistance to antiepileptic drugs is explained well by the transporter hypothesis, which suggests that drug resistance is caused by inadequate penetration of drugs into the brain barrier as a result of increased levels of efflux transporter such as p-glycoprotein. To evaluate the brain expression of p-glycoprotein in patients with drug-resistant epilepsy, including neocortical epilepsy, we developed a noninvsive quantitative analysis including asymmetry indices based on (R)-[(11)C]-verapamil PET/MR imaging with cyclosporin A, a p-glycoprotein inhibitor. MATERIALS AND METHODS Six patients with drug-resistant epilepsy, 5 patients with drug-sensitive epilepsy, and 8 healthy controls underwent dynamic (R)-[(11)C]-verapamil PET/MR imaging with an intravenous infusion of cyclosporin A. Asymmetry indices [(Right Region - Left Region)/(Right Region + Left Region) × 200%] of the standard uptake values in each of the paired lobes were calculated. RESULTS All patients with drug-resistant epilepsy had significantly different asymmetry from the healthy controls, whereas all patients with drug-sensitive epilepsy had asymmetry similar to that in healthy controls. In the temporal lobe, the asymmetry indices of patients with left temporal lobe drug-resistant epilepsy were more positive than those of healthy controls (healthy controls: 4.0413 ± 1.7452; patients: 7.2184 ± 1.8237; P = .048), and those of patients with right temporal drug-resistant epilepsy were more negative (patients: -1.6496 ± 3.4136; P = .044). In addition, specific regions that had significant asymmetry were different between the lateral and medial temporal lobe epilepsy groups. In the frontal lobe, the asymmetry index of patients with right frontal lobe drug-resistant epilepsy was more negative than that in healthy controls. CONCLUSIONS We confirmed that statistical parametric mapping analysis by using asymmetry indices of (R)-[(11)C]-verapamil PET/MR imaging with cyclosporin A could be used as a surrogate marker for drug-resistant epilepsy, and this approach might be helpful for localizing or lateralizing the epileptic zone.
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Affiliation(s)
- J-W Shin
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute Department of Neurology (J.-W.S.), CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - K Chu
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
| | - S A Shin
- Department of Nuclear Medicine (S.A.S., Y.-S.L., J.S.L., D.S.L.) Department of Biomedical Sciences (S.A.S., J.S.L.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - K-H Jung
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
| | - S-T Lee
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
| | - Y-S Lee
- Department of Nuclear Medicine (S.A.S., Y.-S.L., J.S.L., D.S.L.) Department of Molecular Medicine and Biopharmaceutical Sciences (Y.-S.L., D.S.L.), Graduate School of Convergence Science and Technology, Kyunggi, South Korea
| | - J Moon
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
| | - D Y Lee
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
| | - J S Lee
- Department of Nuclear Medicine (S.A.S., Y.-S.L., J.S.L., D.S.L.) Department of Biomedical Sciences (S.A.S., J.S.L.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - D S Lee
- Department of Nuclear Medicine (S.A.S., Y.-S.L., J.S.L., D.S.L.) Department of Molecular Medicine and Biopharmaceutical Sciences (Y.-S.L., D.S.L.), Graduate School of Convergence Science and Technology, Kyunggi, South Korea
| | - S K Lee
- From the Department of Neurology (J.-W.S., K.C., K.-H.J., S.-T.L., J.M., D.Y.L., S.K.L.), Comprehensive Epilepsy Center, Laboratory for Neurotherapeutics, Biomedical Research Institute
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Lee DY, Kim JK, Choi KH, Lee JY, Yoon TY. Nodular cystic fat necrosis related to chronic minor local ischemia. J Dermatol 2015; 42:1021-2. [PMID: 26119032 DOI: 10.1111/1346-8138.13007] [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: 11/28/2022]
Affiliation(s)
- Dong Yoon Lee
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Jun Ki Kim
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Ki Hwa Choi
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Ji Yeoun Lee
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
| | - Tae Young Yoon
- Department of Dermatology, School of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Korea
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Seo SH, Jeong EJ, Han JT, Kang HC, Cha SI, Lee DY, Lee GW. Efficient low-temperature transparent electrocatalytic layers based on graphene oxide nanosheets for dye-sensitized solar cells. ACS Appl Mater Interfaces 2015; 7:10863-10871. [PMID: 25945810 DOI: 10.1021/acsami.5b01938] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Electrocatalytic materials with a porous structure have been fabricated on glass substrates, via high-temperature fabrication, for application as alternatives to platinum in dye-sensitized solar cells (DSCs). Efficient, nonporous, nanometer-thick electrocatalytic layers based on graphene oxide (GO) nanosheets were prepared on plastic substrates using electrochemical control at low temperatures of ≤100 °C. Single-layer, oxygen-rich GO nanosheets prepared on indium tin oxide (ITO) substrates were electrochemically deoxygenated in acidic medium within a narrow scan range in order to obtain marginally reduced GO at minimum expense of the oxygen groups. The resulting electrochemically reduced GO (E-RGO) had a high density of residual alcohol groups with high electrocatalytic activity toward the positively charged cobalt-complex redox mediators used in DSCs. The ultrathin, alcohol-rich E-RGO layer on ITO-coated poly(ethylene terephthalate) was successfully applied as a lightweight, low-temperature counter electrode with an extremely high optical transmittance of ∼97.7% at 550 nm. A cobalt(II/III)-mediated DSC employing the highly transparent, alcohol-rich E-RGO electrode exhibited a photovoltaic power conversion efficiency of 5.07%. This is superior to that obtained with conventionally reduced GO using hydrazine (3.94%) and even similar to that obtained with platinum (5.10%). This is the first report of a highly transparent planar electrocatalytic layer based on carbonaceous materials fabricated on ITO plastics for application in DSCs.
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Affiliation(s)
- Seon Hee Seo
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
| | - Eun Ji Jeong
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
- ‡Department of Advanced Materials Engineering, College of Engineering, Chosun University, Gwangju 501-759, Korea
| | - Joong Tark Han
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
| | - Hyon Chol Kang
- ‡Department of Advanced Materials Engineering, College of Engineering, Chosun University, Gwangju 501-759, Korea
| | - Seung I Cha
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
| | - Dong Yoon Lee
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
| | - Geon-Woong Lee
- †Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, Korea
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Lee DY, Baik YH, Kwak BS, Oh MG, Choi WY. A purse-string suture at the level of internal inguinal ring, taking only the peritoneum leaving the distal sac: is it enough for inguinal hernia in pediatric patients? Hernia 2015; 19:607-10. [PMID: 25644487 DOI: 10.1007/s10029-015-1348-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 01/17/2015] [Indexed: 01/28/2023]
Abstract
PURPOSE Although laparoscopic surgery in children has expanded in recent years. Laparoscopic hernia repair in children is still debatable. We aimed to summarize and describe our results of laparoscopic inguinal hernia repair and techniques among children. METHODS Between March 2011 and April 2013, 98 children (67 male, 31 female) underwent laparoscopic inguinal hernia repair at the department of surgery. The clinical outcomes were collected retrospectively. RESULTS The mean follow-up period was 22.6 months. Twelve patients were ex-premature infants and a contralateral patent processus vaginalis (PPV) was present in 37 of the 91 unilateral inguinal hernia patients. There were two postoperative complications (transient hydrocele, umbilical port site infection). The mean operative time was 46 min. Recurrence, metachronous hernia and testicular atrophy were not observed during the follow-up period. CONCLUSIONS Our preliminary experiences suggest that the laparoscopic purse-string suture of internal inguinal opening of hernia sac could be a safe, effective, and reliable alternative for management of pediatric inguinal hernia.
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Affiliation(s)
- D Y Lee
- Department of Surgery, College of Medicine, Dongguk University, Seoul, South Korea
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Abstract
Despite the fact that the outstanding properties of graphene are well known, the electrical performance of the material is limited by the contact resistance at the metal-graphene interface. In this study, we demonstrate the formation of "edge-contacted" graphene through the use of a controlled plasma processing technique that generates a bond between the graphene edge and the contact metal. This technique controls the edge structure of the bond and significantly reduces the contact resistance. This simple approach requires no additional post-processing and has been proven to be very effective. In addition, controlled pre-plasma processing was applied in order to produce CVD-graphene field effect transistors with an enhanced adhesion and improved carrier mobility. The contact resistance attained by using pre-plasma processing was 270 Ω μm, which is a decrease of 77%.
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Affiliation(s)
- D W Yue
- SKKU Advanced Institute of Nano-Technology (SAINT), Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746 Korea.
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Kim SY, Kim MS, Lee MK, Kim JS, Yi HK, Nam SY, Lee DY, Hwang PH. PPARγ induces growth inhibition and apoptosis through upregulation of insulin-like growth factor-binding protein-3 in gastric cancer cells. ACTA ACUST UNITED AC 2015; 48:226-33. [PMID: 25590353 PMCID: PMC4381942 DOI: 10.1590/1414-431x20144212] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 06/28/2014] [Accepted: 10/13/2014] [Indexed: 12/23/2022]
Abstract
Peroxisome proliferator activator receptor-gamma (PPARγ) is a ligand-activated
transcriptional factor involved in the carcinogenesis of various cancers.
Insulin-like growth factor-binding protein-3 (IGFBP-3) is a tumor
suppressor gene that has anti-apoptotic activity. The purpose of this study was to
investigate the anticancer mechanism of PPARγ with respect to
IGFBP-3. PPARγ was overexpressed in SNU-668 gastric cancer cells
using an adenovirus gene transfer system. The cells in which PPARγ was overexpressed
exhibited growth inhibition, induction of apoptosis, and a significant increase in
IGFBP-3 expression. We investigated the underlying molecular
mechanisms of PPARγ in SNU-668 cells using an IGFBP-3 promoter/luciferase reporter
system. Luciferase activity was increased up to 15-fold in PPARγ transfected cells,
suggesting that PPARγ may directly interact with IGFBP-3 promoter to induce its
expression. Deletion analysis of the IGFBP-3 promoter showed that luciferase activity
was markedly reduced in cells without putative p53-binding sites (-Δ1755, -Δ1795).
This suggests that the critical PPARγ-response region is located within the
p53-binding region of the IGFBP-3 promoter. We further demonstrated an increase in
PPARγ-induced luciferase activity even in cells treated with siRNA to silence p53
expression. Taken together, these data suggest that PPARγ exhibits its anticancer
effect by increasing IGFBP-3 expression, and that IGFBP-3 is a significant tumor
suppressor.
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Affiliation(s)
- S Y Kim
- Department of Pediatrics, Chonbuk National University Hospital, Jeonju, Korea
| | - M S Kim
- Department of Pediatrics, Chonbuk National University Hospital, Jeonju, Korea
| | - M K Lee
- Department of Pediatrics, Chonbuk National University Hospital, Jeonju, Korea
| | - J S Kim
- Department of Biochemistry, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - H K Yi
- Department of Biochemistry, School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - S Y Nam
- Department of Alternative Therapy, Jeonju University, Jeonju, Korea
| | - D Y Lee
- Department of Pediatrics, Chonbuk National University Hospital, Jeonju, Korea
| | - P H Hwang
- Department of Pediatrics, Chonbuk National University Hospital, Jeonju, Korea
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