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Chung HK, Kim JH, Choi A, Ahn CW, Kim YS, Nam JS. Antioxidant-Rich Dietary Intervention Improves Cardiometabolic Profiles and Arterial Stiffness in Elderly Koreans with Metabolic Syndrome. Yonsei Med J 2022; 63:26-33. [PMID: 34913281 PMCID: PMC8688374 DOI: 10.3349/ymj.2022.63.1.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 10/06/2021] [Accepted: 10/18/2021] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Oxidative stress plays an important role in the pathogenesis of chronic metabolic diseases. This study investigated the effect of the antioxidant-rich dietary intervention on oxidative stress, metabolic parameters, and arterial stiffness in elderly Koreans with metabolic syndrome (MetS). MATERIALS AND METHODS Thirty-one subjects with MetS were enrolled and randomly divided into dietary intervention group and control group. Subjects in the intervention group received three meal boxes prepared with antioxidant-rich ingredients every day for 4 weeks, and subjects in the control group maintained their usual diets. Anthropometric and various biochemical parameters related to oxidative stress, inflammation, and MetS were assessed. Brachial-ankle pulse wave velocity (baPWV) and fat measurement using computed tomography were also conducted before and after 4 weeks. RESULTS There were significant differences in waist circumference, visceral to subcutaneous fat ratio, lipid peroxidation, oxidized low density lipoprotein (oxLDL), systolic and diastolic blood pressure, lipid parameters, advanced glycation end products, and baPWV between before and after the study in the experimental group (all p<0.05). Significant inter-group differences were observed between the experimental and control group in terms of the differences in body mass index, waist circumference, oxygen radical absorbance capacity, protein carboxylation, lipid peroxidation, oxLDL, blood pressure, lipid parameters, and baPWV between before and after the study (all p<0.05). CONCLUSION Antioxidant-rich dietary intervention for a 4-week period ameliorated the state of oxidative stress and improved the components of MetS including central obesity, dyslipidemia, hypertension, and arterial stiffness in elderly Koreans with MetS.
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Affiliation(s)
- Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Hye Kim
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Arim Choi
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Chul Woo Ahn
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yu-Sik Kim
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea.
| | - Ji Sun Nam
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Choi A, Kim JH, Chung HK, Ahn CW, Choi HJ, Kim YS, Nam JS. The Effects of C. lacerata on Insulin Resistance in Type 2 Diabetes Patients. J Diabetes Res 2022; 2022:9537741. [PMID: 35242882 PMCID: PMC8888035 DOI: 10.1155/2022/9537741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 01/07/2022] [Accepted: 01/17/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Several experimental studies have suggested beneficial effects of Ceriporia lacerata on glucose metabolism. However, there has been no human study assessing the effects of C. lacerata on glucose metabolism. Therefore, we investigated whether C. lacerata improves glucose control and insulin resistance in type 2 diabetes patients. METHODS Ninety patients diagnosed with type 2 diabetes (T2DM) for more than 6 months were enrolled. Subjects were randomly divided into placebo (n = 45) or C. lacerata (n = 45) groups and then assigned to take placebo or C. lacerata capsules (500 mg/capsule) for a 12-week intervention period. Biochemical markers, including fasting glucose, 2-hour postprandial plasma glucose, and lipid profile levels, as well as insulin, c-peptide, and Hba1c, were measured. Furthermore, insulin sensitivity indices, such as HOMA-IR, HOMA-beta, and QUICKI, were assessed before and after the 12-week administration. RESULTS Eighty-four patients completed the study. There were no significant differences in fasting, postprandial glucose, HbA1c, or lipid parameters. HOMA-IR and QUICKI indices were improved at week 12 in the C. lacerata group, especially in subjects with HOMA-IR of 1.8 or more (p < 0.05). Fasting, postprandial c-peptide, and insulin levels decreased at week 12 in the C. lacerata group (p < 0.05). These significant differences were not observed in the placebo group. CONCLUSION Twelve-week administration of C. lacerata in T2DM patients resulted in significant improvement in insulin resistance, especially in those with lower insulin sensitivity. A larger population study with a longer follow-up period and an effort to elucidate the mechanism is warranted to further assess the effects of C. lacerata on T2DM patients.
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Affiliation(s)
- Arim Choi
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Republic of Korea
| | - Jung Hye Kim
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Republic of Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Republic of Korea
| | - Chul Woo Ahn
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Republic of Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Republic of Korea
| | - Hee Joon Choi
- Gangnam Severance Hospital, Biochemical Research Center, Republic of Korea
| | - Yu-Sik Kim
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Republic of Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Republic of Korea
| | - Ji Sun Nam
- Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Republic of Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Republic of Korea
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Chung HK, Nam JS, Lee MY, Kim YB, Won YS, Song WJ, Kim YH, Ahn CW, Sung KC. The increased amount of coffee consumption lowers the incidence of fatty liver disease in Korean men. Nutr Metab Cardiovasc Dis 2020; 30:1653-1661. [PMID: 32631703 DOI: 10.1016/j.numecd.2020.05.026] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 05/21/2020] [Accepted: 05/21/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Coffee is known to have a beneficial effect on various liver diseases. The aim of this retrospective longitudinal study was to investigate an association between the amount of coffee consumption and the incidence of fatty liver disease in Korean adults. METHODS AND RESULTS Data from a total of 91,436 male and female subjects with the mean follow-up period of 2.8 years were analyzed. The incidence of fatty liver was not associated with the amount of coffee consumption at baseline, but it was associated with the change in the amount of coffee consumption at the follow-up period. Multiple linear regression analyses showed that hazard ratios for incidence of fatty liver disease were significantly low in "increase" group comparing with "no change" group in fully adjusted model. When a subgroup analysis by gender was conducted, similar significant results were observed in male subjects, but not in females. CONCLUSIONS The increment in the amount of coffee consumption is associated with the lower incidence of fatty liver in Korean men and suggests that increasing the coffee consumption may have a protective effect on fatty liver.
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Affiliation(s)
- Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Sun Nam
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Mi-Yeon Lee
- Division of Biostatistics, Department of R&D Management, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yong-Bum Kim
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yu-Sam Won
- Department of Neurosurgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Won-Jun Song
- Department of Critical Care Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Young-Hwan Kim
- Department of Nuclear Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Chul Woo Ahn
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ki-Chul Sung
- Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Kwak JH, Jo G, Chung HK, Shin MJ. Association between sugar-sweetened beverage consumption and incident hypertension in Korean adults: a prospective study. Eur J Nutr 2018; 58:1009-1017. [DOI: 10.1007/s00394-018-1617-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 01/14/2018] [Indexed: 01/04/2023]
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Park K, Son J, Jang J, Kang R, Chung HK, Lee KW, Lee SM, Lim H, Shin MJ. Unprocessed Meat Consumption and Incident Cardiovascular Diseases in Korean Adults: The Korean Genome and Epidemiology Study (KoGES). Nutrients 2017; 9:nu9050498. [PMID: 28505126 PMCID: PMC5452228 DOI: 10.3390/nu9050498] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/11/2017] [Accepted: 05/12/2017] [Indexed: 11/16/2022] Open
Abstract
Meat consumption has been shown to be associated with cardiovascular disease (CVD) risk in Western societies; however, epidemiological data are limited on the Korean population. Therefore, we examined the associations between unprocessed meat consumption and CVD incidence in Korea. Data were derived from the Ansung-Ansan cohort (2001-2012), including 9370 adults (40-69 years) without CVD or cancer at baseline. Total unprocessed meat consumption was estimated as the sum of unprocessed red meat (beef, pork, and organ meat) and poultry consumption. In the fully adjusted Cox regression model, the relative risks of CVD across increasing quintiles of total unprocessed meat intake were 1.0 (reference), 0.72 (95% confidence interval (CI): 0.55, 0.95), 0.57 (95% CI: 0.42, 0.78), 0.69 (95% CI: 0.51, 0.95), and 0.69 (95% CI: 0.48, 0.97), but no significant linear trend was detected (p for trend = 0.14). Frequent poultry consumption was significantly associated with a decreased CVD risk; this association showed a dose-response relationship (p for trend = 0.04). This study showed that a moderate intake of total unprocessed meat was inversely associated with CVD risk. A significant inverse association between poultry consumption and incident CVD was observed in Korean adults, requiring further confirmation in other populations.
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Affiliation(s)
- Kyong Park
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea.
| | - Jakyung Son
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea.
| | - Jiyoung Jang
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea.
| | - Ryungwoo Kang
- Korea National Enterprise for Clinical Trials, Seoul 04143, Korea.
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 06273, Korea.
| | - Kyong Won Lee
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Korea.
| | - Seung-Min Lee
- Department of Food and Nutrition, Sungshin Women's University, Seoul 01133, Korea.
| | - Hyunjung Lim
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Korea.
| | - Min-Jeong Shin
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Korea.
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Chang YH, Shin YA, Kim JH, Kim HM, Lee DW, Chung HK, Kim SJ, Kim CD, Lee JH, Seo YJ, Im M, Lee Y. Use of whole-exome sequencing to determine the genetic basis of signs of skin youthfulness in Korean women. J Eur Acad Dermatol Venereol 2017; 31:e138-e141. [PMID: 27510323 DOI: 10.1111/jdv.13904] [Citation(s) in RCA: 2] [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: 11/30/2022]
Affiliation(s)
- Y H Chang
- LG Household and Healthcare, Daejeon, Korea
| | - Y A Shin
- Theragen-Etex Bio Institute, Advanced Institute of Convergence Technology, Suwon, Korea
| | - J H Kim
- Theragen-Etex Bio Institute, Advanced Institute of Convergence Technology, Suwon, Korea
| | - H M Kim
- Theragen-Etex Bio Institute, Advanced Institute of Convergence Technology, Suwon, Korea
| | - D W Lee
- Theragen-Etex Bio Institute, Advanced Institute of Convergence Technology, Suwon, Korea
| | - H K Chung
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - S J Kim
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - C D Kim
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - J H Lee
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Y J Seo
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - M Im
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Y Lee
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
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Rhee EJ, Ryu S, Lee JY, Lee SH, Cheong E, Park SE, Park CY, Won YS, Kim JM, Cho DS, Chung HK, Sung KC. The association between dietary cholesterol intake and subclinical atherosclerosis in Korean adults: The Kangbuk Samsung Health Study. J Clin Lipidol 2017; 11:432-441.e3. [PMID: 28502500 DOI: 10.1016/j.jacl.2017.01.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 07/03/2016] [Revised: 12/27/2016] [Accepted: 01/31/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND The Scientific Report of the Dietary Guidelines Advisory Committee (2015) concluded that restriction of dietary cholesterol is unnecessary in most adults for the prevention of cardiovascular disease. OBJECTIVE We aimed to assess the risk for subclinical atherosclerosis according to coronary artery calcium score (CACS), based on dietary cholesterol intake in apparently healthy Korean adults. METHODS This was a cross-sectional study performed in 30,068 participants (mean age 40.8 years; 84.5% men) in a health screening program in Korea. The data were collected from 2001 to 2013 and analyzed in 2015. Total energy intake and dietary cholesterol intake were assessed with a food frequency questionnaire. The participants were stratified according to quartile of dietary cholesterol intake. CACS was measured by multi-detector computed tomography. Lipid profiles were measured, and the participants were divided into 6 groups according to low-density lipoprotein cholesterol (LDL-C) level: <70, 70 to 99, 100 to 129, 130 to 159, 160 to 189, and ≥190 mg/dL. RESULTS The presence of coronary artery calcification was defined as CACS>0. Dietary cholesterol intake did not correlate with mean value of serum LDL-C level. For both genders, the odds ratio for coronary artery calcification was not significantly greater with greater amounts of dietary cholesterol (as assessed by quartile). The risk for coronary artery calcification was not higher in subjects with LDL-C 70-129 mg/dL compared with those with LDL-C < 70 mg/dL; however, the risk was significantly greater in subjects with LDL-C ≥ 130 mg/dL compared with those with LDL-C < 70 mg/dL. CONCLUSIONS Dietary cholesterol intake did not have an association with LDL-C level or with risk for coronary artery calcification in apparently healthy Korean adults. The results have to be translated with consideration of limitation of population-based studies.
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Affiliation(s)
- Eun-Jung Rhee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Seungho Ryu
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Jong-Young Lee
- Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Sung Ho Lee
- Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - EunSun Cheong
- Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Se Eun Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Cheol-Young Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Yu Sam Won
- Department of Neurosurgery, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Joon Mo Kim
- Department of Ophthalmology, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Dong-Sik Cho
- Department of Internal Medicine, Eunpyeong Teun Hospital, Seoul, Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Ki Chul Sung
- Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea.
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Yang SH, Chung HK, Lee SM. Effects of Activity-Based Personalized Nutrition Education on Dietary Behaviors and Blood Parameters in Middle-Aged and Older Type 2 Diabetes Korean Outpatients. Clin Nutr Res 2016; 5:237-248. [PMID: 27812513 PMCID: PMC5093221 DOI: 10.7762/cnr.2016.5.4.237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/12/2016] [Accepted: 10/18/2016] [Indexed: 11/19/2022] Open
Abstract
This study aimed to compare the effects of activity-based personalized nutrition education (APNE) with a general instruction for diabetes (control, CTRL) in middle-aged and older Korean outpatients with type 2 diabetes. After an initial screening, 70 subjects were randomly assigned to APNE (n = 37) or CTRL (n = 33) group. APNE considered each patient's anthropometry, blood chemistry data, and dietary habits in addition to planning meal choices with the aid of registered dietitians. After 3 months, dietary behavior, food intake, and anthropometric and blood measurement results were evaluated. Fasting blood glucose, 2-hour postprandial blood glucose, and glycated hemoglobin levels decreased in the APNE group (n = 33) but not in the CTRL group (n = 23). In the APNE group, the meal intervals and number of days of consuming high-fat food were decreased, while the number of days following a meal plan and balanced diet that entailed consuming fruits, vegetables, and healthy food was increased. A lower consumption of carbohydrates, saccharides, grains, and tuber crops and a higher protein, pulses, and fat-derived calorie intake compared with the initial values were observed in the APNE group. In contrast, only the number of days following the meal plan and balanced diet was increased in the CRTL group, without significantly changing the individual macronutrient-derived calorie intake. The APNE approach appeared to effectively educate outpatients with type 2 diabetes about changing their dietary behavior and food intake and improving the clinical parameters related to diabetic conditions.
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Affiliation(s)
- Seung Hye Yang
- Program of Clinical Nutrition, Graduate School of Human Environmental Sciences, Yonsei University, Seoul 03722, Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, College of Medicine, Yonsei University, Seoul 03722, Korea
| | - Seung-Min Lee
- Program of Clinical Nutrition, Graduate School of Human Environmental Sciences, Yonsei University, Seoul 03722, Korea.; Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Korea
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Sung KC, Chang Y, Ryu S, Chung HK. High levels of serum vitamin D are associated with a decreased risk of metabolic diseases in both men and women, but an increased risk for coronary artery calcification in Korean men. Cardiovasc Diabetol 2016; 15:112. [PMID: 27519883 PMCID: PMC4983097 DOI: 10.1186/s12933-016-0432-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/02/2016] [Indexed: 02/06/2023] Open
Abstract
Background There are conflicting results for relationships between serum vitamin D levels and metabolic diseases. The aim of this study was to investigate whether serum vitamin D levels were associated with various metabolic diseases including insulin resistance (IR), metabolic syndrome (MS), fatty liver (FL), and coronary artery calcification (CAC), along with assessing gender differences for these relationships in Korean adults. Methods A total of 180,918 subjects (98,412 men and 82,506 women) who participated in a comprehensive health examination in the 2012–2013 period at Kangbuk Samsung Hospital, College of Medicine, Sungkyunkwan University were included. Serum vitamin D and metabolic markers were analyzed and CAC was estimated. Subjects were divided according to quartile groups of serum vitamin D. To examine the relationships of serum vitamin D to metabolic diseases and metabolic factors, multivariate logistic analysis was conducted. Results High levels of serum vitamin D was associated with lower ORs for MS, IR and FL both in men and women (all p < 0.05). For men, ORs for CAC were significantly higher in third and the highest quartile groups for serum vitamin D in all the analyzed models (all p < 0.05). However, women showed no significant results between serum vitamin D and CAC. Conclusions High levels of serum vitamin D were associated with lower risk of MS, IR and FL in both Korean men and women, but were associated with higher risk of CAC only in men, and not in women. Electronic supplementary material The online version of this article (doi:10.1186/s12933-016-0432-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ki-Chul Sung
- Division of Cardiology, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, 110-746, South Korea.
| | - Yoosoo Chang
- Department of Occupational and Environmental Medicine, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Seungho Ryu
- Department of Occupational and Environmental Medicine, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hye-Kyung Chung
- Severance institute for vascular and metabolic research, Yonsei University College of Medicine, Seoul, 120-749, South Korea.
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Chung HK, Nam JS, Ahn CW, Lee YS, Kim KR. Some Elements in Thyroid Tissue are Associated with More Advanced Stage of Thyroid Cancer in Korean Women. Biol Trace Elem Res 2016; 171:54-62. [PMID: 26419761 DOI: 10.1007/s12011-015-0502-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/31/2015] [Indexed: 01/20/2023]
Abstract
Excessive exposure to heavy metals including cadmium and lead is known to have adverse effects on various types of cancer. The aim of the present study was to evaluate the associations between blood and tissue levels of heavy metals and trace elements and different stages of thyroid cancer in Korean women. Ninety-two Korean women undergoing thyroidectomy were included in this study. Blood and thyroid tissue levels of cadmium, lead, mercury, selenium, and zinc were measured, and histopathological results, cancer tumor node metastasis (TNM) stage, and cancer multifocality were assessed. The tissue levels of cadmium, selenium, and zinc were significantly higher in patients with TNM stages 3 and 4 compared to those in stage 1. The tissue level of cadmium was greater in patients with higher tumor stage (≥T2) than those with lower stage (T1). Also, the tissue levels of cadmium and zinc were higher in multifocal group than in unifocal group. A logistic multiple regression analysis showed that the odds ratio (OR) for advanced tumor stage group (≥T2) increased in those with higher tissue cadmium level after adjustment (OR = 1.397, 95 % CI = 1.078-1.811). The accumulation of cadmium in thyroid tissue may be one of important etiologic factors for the thyroid cancer progression and aggravation in Korean women.
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Affiliation(s)
- Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea
| | - Ji Sun Nam
- Severance Institute for Vascular and Metabolic Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea
| | - Chul Woo Ahn
- Severance Institute for Vascular and Metabolic Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea
| | - Yong Sang Lee
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea.
| | - Kyung Rae Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 135-720, Republic of Korea.
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Chung HK, Cho Y, Do HJ, Oh K, Seo WK, Shin MJ. Plasma phospholipid arachidonic acid and lignoceric acid are associated with the risk of cardioembolic stroke. Nutr Res 2015; 35:1001-8. [PMID: 26452419 DOI: 10.1016/j.nutres.2015.09.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/08/2015] [Accepted: 09/11/2015] [Indexed: 11/19/2022]
Abstract
Cardioembolic (CE) stroke is the most severe subtype of ischemic stroke with high recurrence and mortality. However, there is still little information on the association of plasma fatty acid (FA) with CE stroke. The objective of this study was to test the hypothesis whether the composition of plasma phospholipid FA is associated with the risk of CE stroke. The study subjects were collected from the Korea University Stroke Registry. Twenty-one subjects were selected as CE stroke group, and 39 age- and sex-matched subjects with non-CE stroke were selected as controls. Sociodemographic factors, clinical measurements, and plasma phospholipid FA compositions were compared between the groups. Logistic regression was used to obtain estimates of the associations between the relevant FAs and CE stroke. The result showed that the CE stroke group had higher levels of free FA and lower levels of triglycerides before and after adjustment (all P < .05). In the regression analysis, elaidic acid (18:1Tn9) and arachidonic acid (20:4n6) were positively related, but lignoceric acid (24:0) was negatively related to CE stroke in all constructed models (all P < .05). In conclusion, plasma phospholipid FA composition was associated with CE stroke risk in Korean population, with higher proportions of elaidic acid and arachidonic acid and lower proportion of lignoceric acid in CE stroke.
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Affiliation(s)
- Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 120-749, Republic of Korea
| | - Yoonsu Cho
- Department of Food and Nutrition, Korea University, Seoul 136-701, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea
| | - Hyun Ju Do
- Department of Food and Nutrition, Korea University, Seoul 136-701, Republic of Korea
| | - Kyungmi Oh
- Department of Neurology, College of Medicine, Korea University Guro Hospital, Korea University, Seoul 152-703, Republic of Korea
| | - Woo-Keun Seo
- Department of Neurology, College of Medicine, Korea University Guro Hospital, Korea University, Seoul 152-703, Republic of Korea.
| | - Min-Jeong Shin
- Department of Food and Nutrition, Korea University, Seoul 136-701, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea.
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12
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Choi J, Ko E, Chung HK, Lee JH, Ju EJ, Lim HK, Park I, Kim KS, Lee JH, Son WC, Lee JS, Jung J, Jeong SY, Song SY, Choi EK. Nanoparticulated docetaxel exerts enhanced anticancer efficacy and overcomes existing limitations of traditional drugs. Int J Nanomedicine 2015; 10:6121-32. [PMID: 26457052 PMCID: PMC4598197 DOI: 10.2147/ijn.s88375] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Nanoparticulation of insoluble drugs improves dissolution rate, resulting in increased bioavailability that leads to increased stability, better efficacy, and reduced toxicity of drugs. Docetaxel (DTX), under the trade name Taxotere™, is one of the representative anticancer chemotherapeutic agents of this era. However, this highly lipophilic and insoluble drug has many adverse effects. Our novel and widely applicable nanoparticulation using fat and supercritical fluid (NUFS™) technology enabled successful nanoscale particulation of DTX (Nufs-DTX). Nufs-DTX showed enhanced dissolution rate and increased aqueous stability in water. After confirming the preserved mechanism of action of DTX, which targets microtubules, we showed that Nufs-DTX exhibited similar effects in proliferation and clonogenic assays using A549 cells. Interestingly, we observed that Nufs-DTX had a greater in vivo tumor growth delay effect on an A549 xenograft model than Taxotere™, which was in agreement with the improved drug accumulation in tumors according to the biodistribution result, and was caused by the enhanced permeability and retention (EPR) effect. Although both Nufs-DTX and Taxotere™ showed negative results for our administration dose in the hematologic toxicity test, Nufs-DTX showed much less toxicity than Taxotere™ in edema, paralysis, and paw-withdrawal latency on a hot plate analysis that are regarded as indicators of fluid retention, peripheral neuropathy, and thermal threshold, respectively, for toxicological tests. In summary, compared with Taxotere™, Nufs-DTX, which was generated by our new platform technology using lipid, supercritical fluid, and carbon dioxide (CO2), maintained its biochemical properties as a cytotoxic agent and had better tumor targeting ability, better in vivo therapeutic effect, and less toxicity, thereby overcoming the current hurdles of traditional drugs.
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Affiliation(s)
- Jinhyang Choi
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; Asan Institute for Life Sciences, Duksung Women's University, Seoul, South Korea
| | - Eunjung Ko
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea
| | - Hye-Kyung Chung
- Center for Development and Commercialization of Anti-cancer Therapeutics, Duksung Women's University, Seoul, South Korea
| | - Jae Hee Lee
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea
| | - Eun Jin Ju
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea
| | - Hyun Kyung Lim
- College of Pharmacy, Duksung Women's University, Seoul, South Korea
| | - Intae Park
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea
| | - Kab-Sig Kim
- Bio-Synectics, University of Ulsan College of Medicine, Seoul, South Korea
| | - Joo-Hwan Lee
- Bio-Synectics, University of Ulsan College of Medicine, Seoul, South Korea
| | - Woo-Chan Son
- Department of Pathology, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jung Shin Lee
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, South Korea
| | - Joohee Jung
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; College of Pharmacy, Duksung Women's University, Seoul, South Korea
| | - Seong-Yun Jeong
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; Asan Institute for Life Sciences, Duksung Women's University, Seoul, South Korea
| | - Si Yeol Song
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Eun Kyung Choi
- Institute for Innovative Cancer Research, Duksung Women's University, Seoul, South Korea ; Center for Development and Commercialization of Anti-cancer Therapeutics, Duksung Women's University, Seoul, South Korea ; Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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13
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Sperling P, Gamboa EJ, Lee HJ, Chung HK, Galtier E, Omarbakiyeva Y, Reinholz H, Röpke G, Zastrau U, Hastings J, Fletcher LB, Glenzer SH. Free-electron X-ray laser measurements of collisional-damped plasmons in isochorically heated warm dense matter. Phys Rev Lett 2015; 115:115001. [PMID: 26406836 DOI: 10.1103/physrevlett.115.115001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Indexed: 06/05/2023]
Abstract
We present the first highly resolved measurements of the plasmon spectrum in an ultrafast heated solid. Multi-keV x-ray photons from the Linac Coherent Light Source have been focused to one micrometer diameter focal spots producing solid density aluminum plasmas with a known electron density of n_{e}=1.8×10^{23} cm^{-3}. Detailed balance is observed through the intensity ratio of up- and down-shifted plasmons in x-ray forward scattering spectra measuring the electron temperature. The plasmon damping is treated by electron-ion collision models beyond the Born approximation to determine the electrical conductivity of warm dense aluminum.
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Affiliation(s)
- P Sperling
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
- Institut für Physik, Universität Rostock, 18051 Rostock, Germany
| | - E J Gamboa
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
| | - H J Lee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
| | - H K Chung
- Nuclear Data Section, Division of Physical and Chemical Sciences, International Atomic Energy Agency, A-1400 Vienna, Austria
| | - E Galtier
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
| | - Y Omarbakiyeva
- Institut für Physik, Universität Rostock, 18051 Rostock, Germany
- International IT University, 050040 Almaty, Kazakhstan
| | - H Reinholz
- Institut für Physik, Universität Rostock, 18051 Rostock, Germany
- University of Western Australia, WA 6009 Crawley, Australia
| | - G Röpke
- Institut für Physik, Universität Rostock, 18051 Rostock, Germany
| | - U Zastrau
- European XFEL, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - J Hastings
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
| | - L B Fletcher
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
| | - S H Glenzer
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 72 Menlo Park, California 94025, USA
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14
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Sung KC, Sung E, Byrne CD, Kim YB, Ahn CW, Chung HK. Composition of dietary macronutrient intake is not associated with prevalence of coronary artery calcification in healthy Korean adults. Ann Nutr Metab 2014; 66:36-43. [PMID: 25531976 DOI: 10.1159/000369563] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 11/03/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIMS There is little information supporting the relationships between macronutrients and pre-clinical atherosclerosis. The aim of this study was to identify whether dietary macronutrient content is related with CAC. METHODS 10,793 healthy Korean adults in a cohort were enrolled. Subjects were divided into CAC (CAC score >0) or non-CAC group (CAC score = 0). Intake of energy, carbohydrate (CHO), protein and fat were obtained using food frequency questionnaire (FFQ). Macronutrient composition was expressed as the ratio of energy from each macronutrient to total energy. Subjects were classified into three groups according to tertiles of intake for each macronutrient. To investigate the association between macronutrient intake and CAC, multiple regression analysis was conducted according to tertile groups of each macronutrient. RESULTS The prevalence of CAC significantly differed among tertile groups of CHO and fat intake in men (p < 0.001, p < 0.01) and women (p < 0.05, p < 0.01). However, multiple logistic regression analysis revealed that the odds ratios (ORs) for CAC were not significantly different among tertile groups of each macronutrient intake after adjustment in men (CHO: OR = 0.965 [95% CI = 0.826-1.129]; protein: OR = 1.029 [95% CI = 0.881-1.201]; fat: OR = 1.015 [95% CI = 0.868-1.188]) and women (CHO: OR = 1.158 [95% CI = 0.550-2.438]; protein: OR = 1.261 [95% CI = 0.629-2.528]; fat: OR = 0.625 [95% CI = 0.286-1.365]). CONCLUSIONS The prevalence of CAC may not be associated with composition of dietary macronutrient intake in in healthy Korean adults.
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Affiliation(s)
- Ki-Chul Sung
- Division of Cardiology, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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15
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Cho Y, Chung HK, Kim SS, Shin MJ. Dietary patterns and pulmonary function in Korean women: findings from the Korea National Health and Nutrition Examination Survey 2007-2011. Food Chem Toxicol 2014; 74:177-83. [PMID: 25290855 DOI: 10.1016/j.fct.2014.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 04/24/2014] [Revised: 09/01/2014] [Accepted: 09/22/2014] [Indexed: 11/18/2022]
Abstract
In the present study, we evaluated the association between dietary patterns and pulmonary functions in Korean women older than 40 years. This study analyzed the data from the Korea National Health and Nutrition Examination Survey IV and V (2007-2010). In total, 7615 women were included in the analysis. Using principal component analysis, two dietary patterns were identified, namely a balanced diet pattern (vegetables, fish, meat, seaweed, and mushrooms) and a refined diet (snacks, bread, milk, dairy products, and fast food). The refined diet pattern was positively associated with energy from fat but negatively associated with vitamin A, β-carotene, niacin, and fiber. After adjusting for potential confounders, the refined diet pattern was negatively associated with levels of predicted forced vital capacity (odds ratio (OR): 0.84, 95% confidence intervals (CIs): 0.70, 0.99) and predicted forced expiratory volume in 1 second (OR: 0.79, 95% CIs: 0.66, 0.93). In conclusion, the refined diet pattern was associated with decreased pulmonary function in Korean women. This information may be useful toward the development of nutritional guidelines for improving pulmonary function in Korean women.
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Affiliation(s)
- Yoonsu Cho
- Department of Food and Nutrition, Korea University, Seoul 136-703, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 120-749, Republic of Korea
| | - Seung-Sup Kim
- Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea
| | - Min-Jeong Shin
- Department of Food and Nutrition, Korea University, Seoul 136-703, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea; Korea University Guro Hospital, Korea University, Seoul 152-703, Republic of Korea.
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16
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Chung JH, Moon J, Lee YS, Chung HK, Lee SM, Shin MJ. Arginase inhibition restores endothelial function in diet-induced obesity. Biochem Biophys Res Commun 2014; 451:179-83. [PMID: 25078625 DOI: 10.1016/j.bbrc.2014.07.083] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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: 07/15/2014] [Accepted: 07/17/2014] [Indexed: 11/29/2022]
Abstract
Arginase may play a major role in the regulation of vascular function in various cardiovascular disorders by impairing nitric oxide (NO) production. In the current study, we investigated whether supplementation of the arginase inhibitor N(ω)-hydroxy-nor-l-arginine (nor-NOHA) could restore endothelial function in an animal model of diet-induced obesity. Arginase 1 expression was significantly lower in the aorta of C57BL/6J mice fed a high-fat diet (HFD) supplemented with nor-NOHA (40mgkg(-1)/day) than in mice fed HFD without nor-NOHA. Arginase inhibition led to considerable increases in eNOS expression and NO levels and significant decreases in the levels of circulating ICAM-1. These findings were further confirmed by the results of siRNA-mediated knockdown of Arg in human umbilical vein endothelial cells. In conclusion, arginase inhibition can help restore dysregulated endothelial function by increasing the eNOS-dependent NO production in the endothelium, indicating that arginase could be a therapeutic target for correcting obesity-induced vascular endothelial dysfunction.
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Affiliation(s)
- Ji Hyung Chung
- Department of Applied Bioscience, CHA University, Gyeonggi-do 463-836, Republic of Korea
| | - Jiyoung Moon
- Department of Food and Nutrition, Korea University, Seoul 136-704, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea
| | - Youn Sue Lee
- Department of Food and Nutrition, Korea University, Seoul 136-704, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, College of Medicine, Yonsei University, Seoul 120-749, Republic of Korea
| | - Seung-Min Lee
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Min-Jeong Shin
- Department of Food and Nutrition, Korea University, Seoul 136-704, Republic of Korea; Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, Republic of Korea; Korea University Guro Hospital, Korea University, Seoul 152-703, Republic of Korea.
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17
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Chung HJ, Kim KW, Han DW, Lee HC, Yang BC, Chung HK, Shim MR, Choi MS, Jo EB, Jo YM, Oh MY, Jo SJ, Hong SK, Park JK, Chang WK. Protein Profile in Corpus Luteum during Pregnancy in Korean Native Cows. Asian-Australas J Anim Sci 2014; 25:1540-5. [PMID: 25049514 PMCID: PMC4093032 DOI: 10.5713/ajas.2012.12294] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 08/28/2012] [Accepted: 08/12/2012] [Indexed: 01/17/2023]
Abstract
Steroidogenesis requires coordination of the anabolic and catabolic pathways of lipid metabolism, but the profile of proteins associated with progesterone synthesis in cyclic and pregnant corpus luteum (CL) is not well-known in cattle. In Experiment 1, plasma progesterone level was monitored in cyclic cows (n = 5) and pregnant cows (n = 6; until d-90). A significant decline in the plasma progesterone level occurred at d-19 of cyclic cows. Progesterone level in abbatoir-derived luteal tissues was also determined at d 1 to 5, 6 to 13 and 14 to 20 of cyclic cows, and d-60 and -90 of pregnant cows (n = 5 each). Progesterone level in d-60 CL was not different from those in d 6 to 13 CL and d-90 CL, although the difference between d 6 to 13 and d-90 was significant. In Experiment 2, protein expression pattern in CL at d-90 (n = 4) was compared with that in CL of cyclic cows at d 6 to 13 (n = 5). Significant changes in the level of protein expression were detected in 32 protein spots by two-dimensional polyacrylamide gel electrophoresis (2-DE), and 23 of them were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Six proteins were found only in pregnant CL, while the other 17 proteins were found only in cyclic CL. Among the above 6 proteins, vimentin which is involved in the regulation of post-implantation development was included. Thus, the protein expression pattern in CL was disorientated from cyclic luteal phase to mid pregnancy, and alterations in specific CL protein expression may contribute to the maintenance of pregnancy in Korean native cows.
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Affiliation(s)
- H J Chung
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - K W Kim
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - D W Han
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - H C Lee
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - B C Yang
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - H K Chung
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M R Shim
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M S Choi
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - E B Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - Y M Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M Y Oh
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - S J Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - S K Hong
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - J K Park
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - W K Chang
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
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18
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Cho Y, Shin MJ, Chung HK. Effects of diet modification on meal quality and quality of life in korean diabetic patients: data from Korea national health and nutrition examination survey (2007-2011). Clin Nutr Res 2014; 3:106-14. [PMID: 25136538 PMCID: PMC4135238 DOI: 10.7762/cnr.2014.3.2.106] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 06/26/2014] [Accepted: 07/04/2014] [Indexed: 12/24/2022] Open
Abstract
It is generally accepted that diet modification provides beneficial effects on the management of diabetes. In the present study, we evaluated the effects of diet modification on nutrient intake and quality of life in a large sample of diabetic patients. This study was conducted using data from the Korea National Health and Nutrition Examination Survey IV and V (2007-2010). A total of 2,484 of diabetic patients were included in the analysis. Then, we compared the overall quality of dietary intake between diabetic patients with diet modification and those without dietary modification. The result showed that subjects on diabetic diet (DDG) showed lower levels of total cholesterol, triglyceride, and AST before and after the adjustment for covariates (all p < 0.05). The results of nutrient assessment showed that DDG had lower intakes of total energy, fat, and carbohydrate (all p < 0.05), but higher intakes of energy from protein, vitamin B1, vitamin B2, niacin and vitamin C than NDG. (all p < 0.05). In addition, nutritional adequacy ratio of calcium and vitamin B2 were significantly higher in DDG than those in normal diet group (NDG) (p < 0.05). However, we observed no significant differences in quality of life between two groups. In conclusion, diet modification in diabetic patients seemed to be effective to improve blood lipid profile and the adequacy of nutrient intake without sacrificing the quality of life.
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Affiliation(s)
- Yoonsu Cho
- Department of Food and Nutrition, Korea University, Seoul 136-703, South Korea
- Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, South Korea
| | - Min-Jeong Shin
- Department of Food and Nutrition, Korea University, Seoul 136-703, South Korea
- Department of Public Health Sciences, Graduate School, Korea University, Seoul 136-703, South Korea
- Korea University Guro Hospital, Korea University, Seoul 152-703, South Korea
| | - Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 120-749, South Korea
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19
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Chung HK, Cho Y, Choi S, Shin MJ. The association between serum 25-hydroxyvitamin D concentrations and depressive symptoms in Korean adults: findings from the fifth Korea National Health and Nutrition Examination Survey 2010. PLoS One 2014; 9:e99185. [PMID: 24945632 PMCID: PMC4063710 DOI: 10.1371/journal.pone.0099185] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 05/12/2014] [Indexed: 02/06/2023] Open
Abstract
The aims of this study were to examine the association between circulating vitamin D (25(OH)D) levels and depressive symptoms and to evaluate the associations between depressive symptoms and various sociodemographic factors. Data on serum 25(OH)D levels, sociodemographic factors, and information on depressive symptoms were obtained from the Korea National Health and Nutrition Examination Survey V-1 2010. A total of 3,570 Koreans aged ≥20 years were included in the statistical analysis. Subjects with depressive symptoms had lower serum levels of 25(OH)D (41.6±16.2 nmol/L) than those without (44.3±16.2 nmol/L; P-value<0.05; effect size = 0.17). In a logistic regression analysis, the 25(OH)D sufficiency group (≥50 nmol/L) revealed fewer depressive symptoms (OR, 0.72; 95% CI, 0.53-0.97; P-value = 0.032) after adjusting for multiple factors. In addition, females (OR, 3.61; 95% CI, 2.55-5.11; P-value<0.001), problematic alcohol users (OR, 2.33; 95% CI, 1.63-3.34; P-value<0.001), current smokers (OR, 1.43; 95% CI, 1.02-1.99; P-value = 0.036), and subjects who experienced weight loss (OR, 1.78; 95% CI, 1.30-2.44; P-value<0.001) were more likely to answer "yes" on question for depressive symptoms. In conclusion, low serum levels of 25(OH)D were associated with an increased risk for depression symptoms in Korean adults. In addition, several sociodemographic factors were related to the depressive symptoms. Our results provide insight into the relationships among vitamin D status, sociodemographic factors, and depression in the Korean population.
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Affiliation(s)
- Hye-Kyung Chung
- Severance institute for vascular and metabolic research, College of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Yoonsu Cho
- Department of Food and Nutrition, Korea University, Seoul, Republic of Korea
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Republic of Korea
| | - Sumi Choi
- Department of Child Development and Family Studies, Pusan National University, Pusan, Republic of Korea
| | - Min-Jeong Shin
- Department of Food and Nutrition, Korea University, Seoul, Republic of Korea
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Republic of Korea
- Korea University Guro Hospital, Korea University, Seoul, Republic of Korea
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20
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Hwang YG, Lee H, Lee S, Chung HK, Kang KK, Kim SH. A proteomic analysis using an animal model for hyperlipidemia-related erectile dysfunction. Drug Res (Stuttg) 2014; 64:563-8. [PMID: 24452518 DOI: 10.1055/s-0033-1363994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
To investigate the pathogenesis of hyperlipidemia-related erectile dysfunction and the effects of DA-8159, a new phosphodiesterase-5 inhibitor, on protein expression, we performed a proteomic analysis of differentially expressed proteins in the corpus cavernosum of hyperlipidemic rats by two-dimensional electrophoresis-mass spectrometry. Rats were fed high-cholesterol diet and treated with 5 mg·kg(-1)·day(-1) DA-8159 concurrently. After 5 months apparent hyperlipidemia and significantly decreased maximal intra-cavernous pressure were observed in the control group with the alteration of 8 proteins, which were restored by DA-8159 treatment. The proteins whose levels decreased >2-fold and attenuated by DA-8159 were determined alcohol dehydrogenase, aldolase A, annexin 1, and tropomyosin-rat, whereas proteins increased>2-fold and recovered by DA-8159 were found to be aldehyde dehydrogenase complex, guanine deaminase, creatine kinase-B, and phosphoglycerate mutase type B subunit.
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Affiliation(s)
- Y-G Hwang
- Ajou University, Yeongtong, Suwon, Gyunggi, Republic of Korea
| | - H Lee
- Ajou University, Yeongtong, Suwon, Gyunggi, Republic of Korea
| | - S Lee
- Ajou University, Yeongtong, Suwon, Gyunggi, Republic of Korea
| | - H K Chung
- Research Institutes of Dong-A ST Company, Gyunggi, Republic of Korea
| | - K K Kang
- Research Institutes of Dong-A ST Company, Gyunggi, Republic of Korea
| | - S H Kim
- Research Institutes of Dong-A ST Company, Gyunggi, Republic of Korea
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Chou MS, Chung HK, Tsou YA, Chen JJ, Tsai MH, Jan CI. Endoscopic management of pediatric sinonasal schwannoma: case report. B-ENT 2014; 10:299-302. [PMID: 25654954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
OBJECTIVES To describe an extremely rare pediatric sinonasal schwannoma, and to reviewmanagement strategies and relevant literature. METHODS Case report of pediatric sinonasal schwannoma, that was imaged with computed tomography and magnetic resonance imaging and managed endoscopically. Immunohistochemical analysis was performed to determine pathology. RESULTS A 12-year-old girl presented with a 2-month history of progressive left exophthalmos. Imaging studies showed a large heterogeneous tumour arising from the ethmoid sinus and extending to the base of the skull and to the orbital cavity. The lesion was removed with an endonasal radical excision. The final pathological diagnosis was schwannoma. There was no tumour recurrence or any major complication during the 2-year follow up. CONCLUSION Schwannoma should be considered in the differential diagnosis for pediatric patients with intranasal masses. Depending on the location and extent of the tumour, endonasal endoscopic excision could be a suitable management strategy.
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Chung HK. An analysis model of creating a core journal collection for academic libraries. Library Collections, Acquisitions, & Technical Services 2013. [DOI: 10.1080/14649055.2009.10766228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hye-Kyung Chung
- 207- 43 Cheongyangni 2-Dong, Dongdaemun-Gu, Seoul, 130-868, Republic of Korea
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Chung HK, Park JY, Cho Y, Shin MJ. Contribution of dietary patterns to blood heavy metal concentrations in Korean adults: findings from the Fifth Korea National Health and Nutrition Examination Survey 2010. Food Chem Toxicol 2013; 62:645-52. [PMID: 24120902 DOI: 10.1016/j.fct.2013.09.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 09/26/2013] [Accepted: 09/29/2013] [Indexed: 12/29/2022]
Abstract
The aim of the present study was to evaluate the associations between dietary patterns and blood levels of lead and mercury in Korean adults. A total of 858 Korean adults (≥20 years) who participated in the Korea National Health and Nutrition Examination Survey (KNHANES) V-1 2010 were included in this study. Data of biochemical measurements including blood lead and mercury levels, nutrients intakes and anthropometric measurements were acquired. 'Balanced diet', 'Grain and kimchi', and 'Alcohol and noodle' dietary patterns were derived from a factor analysis, and the subjects were divided into tertiles by each dietary pattern score. A logistic multiple regression analysis showed that the balanced diet pattern was negatively associated with blood levels of lead before and after adjustment. On the other hand, the alcohol and noodle pattern was positively associated with blood lead and mercury levels. These results indicate that the alcohol and noodle dietary pattern characterized by high alcohol consumption and lack of various foods, and the balanced dietary pattern, including vegetable, fish, meat and milk intake, was associated with the blood concentrations of heavy metals in Korean adults.
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Affiliation(s)
- Hye-Kyung Chung
- Severance Institute for Vascular and Metabolic Research, College of Medicine, Yonsei University, Seoul 120-749, Republic of Korea
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Hoarty DJ, Allan P, James SF, Brown CRD, Hobbs LMR, Hill MP, Harris JWO, Morton J, Brookes MG, Shepherd R, Dunn J, Chen H, Von Marley E, Beiersdorfer P, Chung HK, Lee RW, Brown G, Emig J. Observations of the effect of ionization-potential depression in hot dense plasma. Phys Rev Lett 2013; 110:265003. [PMID: 23848885 DOI: 10.1103/physrevlett.110.265003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Indexed: 06/02/2023]
Abstract
The newly commissioned Orion laser system has been used to study dense plasmas created by a combination of short pulse laser heating and compression by laser driven shocks. Thus the plasma density was systematically varied between 1 and 10 g/cc by using aluminum samples buried in plastic foils or diamond sheets. The aluminum was heated to electron temperatures between 500 and 700 eV allowing the plasma conditions to be diagnosed by K-shell emission spectroscopy. The K-shell spectra show the effect of the ionization potential depression as a function of density. The data are compared to simulated spectra which account for the change in the ionization potential by the commonly used Stewart and Pyatt prescription and an alternative due to Ecker and Kröll suggested by recent x-ray free-electron laser experiments. The experimental data are in closer agreement with simulations using the model of Stewart and Pyatt.
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Affiliation(s)
- D J Hoarty
- Directorate of Research and Applied Science, AWE plc, Reading RG7 4PR, United Kingdom
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Cho E, Kim HJ, Kim GM, Kum J, Chung HK, Lyu CJ, Ahn JB, Shin SJ. Assessment of efficiency and safety of the comprehensive Chemotherapy Assistance Program for ordering oncology medications. Int J Med Inform 2013; 82:504-13. [PMID: 23481407 DOI: 10.1016/j.ijmedinf.2013.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 01/31/2013] [Accepted: 02/03/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE To assess whether the newly developed Comprehensive Chemotherapy Assistance Program (CAP) decreases errors and increases performance efficiency in ordering oncology medications as compared to the existing Computerized Physician Order Entry (CPOE) system, the Order Communication System (OCS). METHODS All chemotherapy prescriptions ordered using OCS and CAP systems during the first year of CAP implementation were prospectively analyzed to identify near-miss cases. The efficiency outcomes were determined in a trial setting with eight predefined hypothetical chemotherapy regimens, each with four measures of the average time, movement distance on the screen, maximum input interval time, and number of mouse or keystrokes per order. A total of 14 physicians participated in the study, and each regimen was ordered twice, once using CAP and once using OCS. RESULTS For all near-miss types, CAP orders showed significant improvements as compared with OCS orders (p<0.0001). For CAP orders, incorrect dose and agent errors were reduced by 43.9% and 31.6%, respectively. Compared with OCS orders, regimen defects, drug omissions, and incorrect data input errors were reduced by more than 70% for CAP orders. For all four efficiency measures, a statistically significant competence was identified when physicians ordered a chemotherapy prescription with CAP as compared with OCS (p<0.0001). CONCLUSIONS These results demonstrate the superiority of CAP over the existing CPOE system for ordering oncology medications with regard to safety and efficiency.
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Affiliation(s)
- Eun Cho
- College of Pharmacy, Sookmyung Women's University, Seoul, Republic of Korea
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Chung HK, Cho Y, Shin MJ. Alcohol use behaviors, fat intake and the function of pancreatic β-cells in non-obese, healthy Korean males: findings from 2010 Korea National Health and Nutrition Examination Survey. Ann Nutr Metab 2013; 62:129-36. [PMID: 23392227 DOI: 10.1159/000345587] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 10/27/2012] [Indexed: 01/13/2023]
Abstract
AIMS In the present study, we aimed to identify dietary factors related to insulin secretion function especially in healthy, non-obese Korean males. METHODS Data were obtained from the Korea National Health and Nutrition Examination Survey V-1 (KNHANES V-1). Nine hundred and twenty male adults aged >30 years of normal weight were included, excluding those with type 2 diabetes mellitus and liver disease. Alcohol use disorders identification test (AUDIT) score which represents alcohol use behaviors and nutrient intakes was used, and homeostasis model assessment of β-cell function (HOMA-B score) was calculated. RESULTS HOMA-B score was associated with age (p < 0.001), AUDIT score (p = 0.030), and percentage of fat from total energy intake (p = 0.002). HOMA-B scores in the problematic AUDIT group were significantly lower than those in the normal AUDIT group. In addition, HOMA-B scores in the lowest fat intake group were significantly lower than those in the medium fat intake group, but similar to those in the highest fat intake group. There was an interaction between alcohol use behaviors and percentage of fat from energy intake in determining HOMA-B score (p for interaction = 0.034). CONCLUSIONS Alcohol use behaviors and percentage of fat from energy intake were found to be associated with HOMA-B score in healthy, non-obese Korean males.
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Affiliation(s)
- Hye-Kyung Chung
- Department of Food and Nutrition, Korea University, Seoul, South Korea
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Lee SM, Cho Y, Chung HK, Shin DH, Ha WK, Lee SC, Shin MJ. Effects of kimchi supplementation on blood pressure and cardiac hypertrophy with varying sodium content in spontaneously hypertensive rats. Nutr Res Pract 2012; 6:315-21. [PMID: 22977685 PMCID: PMC3439575 DOI: 10.4162/nrp.2012.6.4.315] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 06/07/2012] [Accepted: 07/09/2012] [Indexed: 01/19/2023] Open
Abstract
We tested the effects of dietary intake of freeze-dried Korean traditional fermented cabbage (generally known as kimchi) with varying amounts of sodium on blood pressure and cardiac hypertrophy in spontaneously hypertensive rats (SHRs). Wistar-Kyoto rats (WKY), as a control group, received a regular AIN-76 diet, and the SHRs were divided into four groups. The SHR group was fed a regular diet without kimchi supplementation, the SHR-L group was fed the regular diet supplemented with low sodium kimchi containing 1.4% salt by wet weight, which was provided in a freeze-dried form, the SHR-M group was supplemented with medium levels of sodium kimchi containing 2.4% salt, and the SHR-H group was supplemented with high sodium kimchi containing 3.0% salt. Blood pressure was measured over 6 weeks, and cardiac hypertrophy was examined by measuring heart and left ventricle weights and cardiac histology. SHRs showed higher blood pressure compared to that in WKY rats, which was further elevated by consuming high sodium containing kimchi but was not influenced by supplementing with low sodium kimchi. None of the SHR groups showed significant differences in cardiac and left ventricular mass or cardiomyocyte size. Levels of serum biochemical parameters, including blood urea nitrogen, creatinine, glutamic-oxaloacetic transaminase, glutamic-pyruvic transaminase, sodium, and potassium were not different among the groups. Elevations in serum levels of aldosterone in SHR rats decreased in the low sodium kimchi group. These results suggest that consuming low sodium kimchi may not adversely affect blood pressure and cardiac function even under a hypertensive condition.
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Affiliation(s)
- Seung-Min Lee
- Department of Food and Nutrition and Institute of Health Sciences, Korea University, San 1, Jeongreung-dong, Seongbuk-gu, Seoul 136-703, Korea
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Lee YS, Choi I, Ning Y, Kim NY, Khatchadourian V, Yang D, Chung HK, Choi D, LaBonte MJ, Ladner RD, Nagulapalli Venkata KC, Rosenberg DO, Petasis NA, Lenz HJ, Hong YK. Interleukin-8 and its receptor CXCR2 in the tumour microenvironment promote colon cancer growth, progression and metastasis. Br J Cancer 2012; 106:1833-41. [PMID: 22617157 PMCID: PMC3364111 DOI: 10.1038/bjc.2012.177] [Citation(s) in RCA: 218] [Impact Index Per Article: 18.2] [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] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is a leading cause of death in the United States. Increased level of interleukin-8 (IL-8) and CXCR2 on tumours and in the tumour microenvironment has been associated with CRC growth, progression and recurrence in patients. Here, we aimed to evaluate the effects of tissue microenvironment-encoded IL-8 and CXCR2 on colon cancer progression and metastasis. METHODS A novel immunodeficient, skin-specific IL-8-expressing transgenic model was generated to evaluate colon cancer growth and metastasis. Syngeneic mouse colon cancer cells were grafted in CXCR2 knockout (KO) mice to study the contribution of CXCR2 in the microenvironment to cancer growth. RESULTS Elevated levels of IL-8 in the serum and tumour microenvironment profoundly enhanced the growth of human and mouse colon cancer cells with increased peri-tumoural angiogenesis, and also promoted the extravasation of the cancer cells into the lung and liver. The tumour growth was inhibited in CXCR2 KO mice with significantly reduced tumour angiogenesis and increased tumour necrosis. CONCLUSION Increased expression of IL-8 in the tumour microenvironment enhanced colon cancer growth and metastasis. Moreover, the absence of its receptor CXCR2 in the tumour microenvironment prevented colon cancer cell growth. Together, our study demonstrates the critical roles of the tumour microenvironment-encoded IL-8/CXCR2 in colon cancer pathogenesis, validating the pathway as an important therapeutic target.
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Affiliation(s)
- Y S Lee
- Department of Surgery, Biochemistry and Molecular Biology, University of Southern California, 1450 Biggy Street NRT6501, Los Angeles, CA 90033, USA
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Abstract
The purposes of this study are to estimate the stress level of university students, and to verify the relationships between stress level and drinking behavior. A questionnaire survey was administered to 430 university students in the Gangwon area in Korea from November 5 to November 28, 2008, and data from 391 students were used for the final statistical analysis. The most stressful factor was "Worry about academic achievements" (2.86 by Likert-type 4 point scale). The subjects were divided into two groups, a low stress group (≤ 65.0) and a high stress group (≥ 66.0), by the mean value (65.1) and median value (66.0) of the stress levels. The drinking frequency was not different between the two stress groups, but the amount of alcohol consumption was significantly different (P < 0.05). The portion of students reporting drinking "7 glasses or over" was higher in the lower stress group than in the higher stress group. In addition, factor 6, "Lack of learning ability", was negatively correlated with drinking frequency and the amount of alcohol consumption (P < 0.05), and factor 3, "Worry about academic achievements", was negatively correlated with the amount of drinking (P < 0.05). The major motive for drinking was "When overjoyed or there is something to celebrate" (2.62), and the main expected effect of drinking was "Drinking enables me to get together with people and shape my sociability" (2.73). The higher stress group showed significantly higher scores on several items in the categories of motives (P < 0.01), negative experience (P < 0.05), and expected effects (P < 0.05) of drinking than the lower stress group. Our results imply that university students at the lower stress level may drink more from social motives in positive drinking environments, while those at the higher stress level may have more problematic-drinking despite their smaller amount of alcohol consumption.
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Affiliation(s)
- Hye-Kyung Chung
- Department of Nutrition Services, Gangnam Severance Hospital, Yonsei University, Seoul 135-720, Korea
| | - Hae-Young Lee
- Department of Food and Nutrition, Sangji University, 660 Woosan-dong, Wonju, Gangwon 220-702, Korea
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Choi J, Kim HY, Ju EJ, Jung J, Park J, Chung HK, Lee JS, Lee JS, Park HJ, Song SY, Jeong SY, Choi EK. Use of macrophages to deliver therapeutic and imaging contrast agents to tumors. Biomaterials 2012; 33:4195-203. [PMID: 22398206 DOI: 10.1016/j.biomaterials.2012.02.022] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2011] [Accepted: 02/09/2012] [Indexed: 12/13/2022]
Abstract
Drug targeting to tumors with limited toxicity and enhanced efficacy of drug is one of the important goals for cancer treatment pharmaceutics. Monocytes/macrophages are able to migrate to tumor sites across the blood barriers by acting as Trojan horses carrying drug cargoes. Taking this advantage, we have intended to develop an efficient administration system using a biologically active carrier of mouse peritoneal macrophage bearing liposomal doxorubicin (macrophage-LP-Dox). We expect that this system could improve the cancer therapeutic efficacy through deeper penetration into tumor even hypoxic region behind tumor blood vessel. We first confirmed that macrophages containing iron oxides could migrate and infiltrate into tumors effectively by MR imaging. Next, we showed that doxorubicin (Dox) encapsulated with liposomes (LP-Dox) was successfully loaded into macrophages, in which the biological activity of macrophage and cytotoxicity of Dox against tumor cells were well preserved. Delivery of Dox into tumor tissue by systemic administration of macrophage-LP-Dox was verified in both subcutaneous and metastasis xenograft tumor models. Importantly, the effective inhibition of in vivo tumor growth was proved with this system. Our results provide the feasibility of macrophages-LP-drug as an active biocarrier for the enhancement of therapeutic effects in cancer treatment and open new perspectives for the active delivery of drugs.
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Affiliation(s)
- Jinhyang Choi
- Institute for Innovative Cancer Research, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Park JS, Chung HK, Hwang HK, Kim JK, Yoon DS. Postoperative nutritional effects of early enteral feeding compared with total parental nutrition in pancreaticoduodectomy patients: a prosepective, randomized study. J Korean Med Sci 2012; 27:261-7. [PMID: 22379336 PMCID: PMC3286772 DOI: 10.3346/jkms.2012.27.3.261] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [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: 06/07/2011] [Accepted: 11/01/2011] [Indexed: 12/17/2022] Open
Abstract
The benefits of early enteral feeding (EEN) have been demonstrated in gastrointestinal surgery. But, the impact of EEN has not been elucidated yet. We assessed the postoperative nutritional status of patients who had undergone pancreaticoduodenectomy (PD) according to the postoperative nutritional method and compared the clinical outcomes of two methods. A prospective randomized trial was undertaken following PD. Patients were randomly divided into two groups; the EEN group received the postoperative enteral feed and the control group received the postoperative total parenteral nutrition (TPN) management. Thirty-eight patients were included in our analyses. The first day of bowel movement and time to take a normal soft diet was significantly shorter in EEN group than in TPN group. Prealbumin and transferrin were significantly reduced on post-operative day (POD) 7 and were slowly recovered until POD 90 in the TPN group than in the EEN group. EEN group rapidly recovered weight after POD 21 whereas it was gradually decreased in TPN group until POD 90. EEN after PD is associated with preservation of weight compared with TPN and impact on recovery of digestive function after PD.
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Affiliation(s)
- Joon Seong Park
- Department of Surgery, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
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Kim S, Youn H, Song MG, Kang JH, Chung HK, Lee DS, Chung JK. Complementary treatment of siTERT for improving the antitumor effect of TERT-specific I-131 therapy. Cancer Gene Ther 2012; 19:263-70. [PMID: 22301953 DOI: 10.1038/cgt.2011.88] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sodium iodide symporter (NIS)-based radionuclide therapy provides an effective means of treating malignant tumors. However, it is sometimes inadequate because of limited effects on radio-resistant tumors, and thus, combination therapies with other therapeutic options have been requested to enhance its efficacy. Human telomerase reverse transcriptase (hTERT) has been reported to be involved in the progression of most cancers and also been viewed as a good candidate for targeting tumor. Application of TERT-specific radionuclide therapies using NIS gene transfer have been reported to treat TERT-positive tumors, but this approach only demonstrated tumor regression rather than eradication. As inhibiting TERT expression by introducing the hTERT-specific shRNA (siTERT) has been suggested as a therapeutic option, we investigated the complementary role of siTERT treatment after the TERT-specific I-131 therapy and its possibility as a novel anticancer therapeutic strategy. Retroviruses containing TERT promoter/NIS for TERT specific Radionuclide therapy and siTERT for TERT targeting antisense therapy were produced. Hep3B cells expressing TERT specific NIS (Hep3B-TERT/NIS) were xenografted into nude mouse and visualized with micro-SPECT/CT for monitoring NIS activity. The levels of hTERT mRNA, protein and its activity were confirmed by RT-PCR, Western blotting and Telomerase repeat amplification protocol assay. Cell proliferation was monitored by MTT assay and induced apoptosis was confirmed by Annexin-V-PI staining. Therapeutic effects of I-131 and/or siTERT were evaluated by clonogenic assay and mouse tumor model. Reduction of hTERT mRNA, protein and TERT activity by siTERT were observed in Hep3B-TERT/NIS cells. The viabilities of the infected cells were significantly decreased to 50% versus siScramble treated controls. The early apoptotic cell population was increased by siTERT. The survival rates of cells treated with siTERT or I-131 alone were 72.4±7.6% and 56.2±5.2%, respectively. However, the survival rate of cells treated with I-131 and siTERT were decreased to 22.1±2.8%. From mouse xenograft model, we also found that the siTERT gene therapy showed synergism to the radioiodine therapy for reducing tumor growth in vivo. Our Results suggested that complementary siTERT gene therapy offers a novel strategy of cancer therapy to improve the therapeutic efficacy of TERT-specific I-131.
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Affiliation(s)
- S Kim
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Korea
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Lee SJ, Chung HK. Analyzing altruistic motivations in public library valuation using contingent valuation method. Library & Information Science Research 2012. [DOI: 10.1016/j.lisr.2011.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
This article aims to present evidence of the warm glow effect in a public library setting. More specifically, it tests whether individual respondents with different values for the warm glow component report different values for their willingness to pay (WTP). The data come from a contingent valuation survey conducted on randomly selected citizens of Korea, where the respondents are asked how much they are willing to pay for public library services. Results show that there is significant difference between traditional WTP and cold WTP, concluding that the traditional WTP value is not the real economic value of the public good.
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Hoarty DJ, James SF, Brown CRD, Williams BM, Guymer T, Hill M, Morton J, Chapman D, Shepherd R, Dunn J, Brown G, Schneider M, Beiersdorfer P, Chung HK, Harris JWO, Upcraft L, Smith CC, Lee RW. High temperature, high density opacity measurements using short pulse lasers. ACTA ACUST UNITED AC 2010. [DOI: 10.1088/1742-6596/244/1/012002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chung HK, Suschak J, Galmin L, Rose N, Pal R. Characterization of a SHIV162P3 variant evolved in an infected rhesus macaque with persistent plasma viremia. Virus Res 2010; 151:229-34. [PMID: 20417670 DOI: 10.1016/j.virusres.2010.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 04/14/2010] [Accepted: 04/16/2010] [Indexed: 12/30/2022]
Abstract
Typically plasma viremia is controlled in macaques challenged with R5 tropic SHIV162P3 during the chronic phase of infection. However, in a few infected animals it sustains for a prolonged period. Persistent plasma viremia in two such macaques led to a rapid decline of CD4+ T-cells in blood leading to the induction of AIDS. A viral variant from one of these animals showed sensitivity to soluble CD4 and maraviroc similar to the challenge virus. However, it exhibited reduced sensitivity to anti-gp120 antibody b12 and to sera from SHIV162P3-infected macaques or HIV-1-infected humans. Molecular sequencing of the env gene from this virus revealed multiple mutations clustering on the V1 domain of gp120. These results demonstrate that evolution of the envelope in SHIV-infected macaques may lead to the emergence of a viral variant with altered immunological characteristics.
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Affiliation(s)
- Hye-Kyung Chung
- Department of Cell Biology, Advanced BioScience Laboratories, Inc., Kensington, MD 20895, USA
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Lee EM, Chung HK, Livesay J, Suschak J, Finke L, Hudacik L, Galmin L, Bowen B, Markham P, Cristillo A, Pal R. Molecular methods for evaluation of virological status of nonhuman primates challenged with simian immunodeficiency or simian-human immunodeficiency viruses. J Virol Methods 2009; 163:287-94. [PMID: 19878696 DOI: 10.1016/j.jviromet.2009.10.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 10/13/2009] [Accepted: 10/19/2009] [Indexed: 01/23/2023]
Abstract
Nonhuman primates represent a robust model to evaluate preclinical efficacy of HIV-1 vaccine and therapeutic strategies. Plasma and tissue viral RNA as well as tissue proviral DNA load are key parameters in assessing efficacy of vaccines and therapeutics against simian immunodeficiency virus (SIV) or simian-human immunodeficiency virus (SHIV) challenge. To quantitate SIV RNA in plasma and tissues, an isothermal nucleic acid sequence-based amplification (NASBA) method using real-time detection of amplified RNA with molecular beacons was developed. This assay has accuracy and reproducibility over seven orders of magnitude and has advantages over the electrochemiluminescence-based NASBA assay described previously, both in terms of higher throughput and sensitivity. Reproducibility and accuracy were also demonstrated for a TaqMan real-time PCR assay for quantitating proviral DNA load in PBMCs and lymphoid tissues. In infected macaques, the level of plasma viremia correlated with the tissue viral RNA but not always with proviral DNA loads. Further, animals with undetectable levels of viral RNA in plasma and proviral DNA in tissues, showed no sign of seroconversion and activation of Gag-specific CD8+ or CD4+ T cells in peripheral blood. These results suggest that simultaneous application of real-time NASBA and PCR assays provides quantitative evaluation of challenge outcome in macaques.
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Affiliation(s)
- Eun Mi Lee
- Advanced BioScience Laboratories, Inc., Kensington, MD 20895, United States
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Chung HK, Kang B, Lee JH, Shim JY, Park S, Lee SH, Park YK, Park E, Chung N, Shin MJ. Increased arterial stiffness is associated with reduced plasma levels of beta-carotene in treated hypertensive patients with type 2 diabetes mellitus. Nutr Metab Cardiovasc Dis 2009; 19:e9-e11. [PMID: 19505810 DOI: 10.1016/j.numecd.2009.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2008] [Revised: 02/22/2009] [Accepted: 03/17/2009] [Indexed: 12/12/2022]
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Pal R, Nuttall J, Galmin L, Weiss D, Chung HK, Romano J. Characterization of vaginal transmission of a simian human immunodeficiency virus (SHIV) encoding the reverse transcriptase gene from HIV-1 in Chinese rhesus macaques. Virology 2009; 386:102-8. [PMID: 19195672 DOI: 10.1016/j.virol.2009.01.002] [Citation(s) in RCA: 16] [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: 10/03/2008] [Revised: 11/21/2008] [Accepted: 01/02/2009] [Indexed: 11/27/2022]
Abstract
Replication competent recombinant simian-human immunodeficiency virus encoding the reverse transcriptase gene (RT SHIV) from HIV-1 was characterized for vaginal transmission in rhesus macaques. RT SHIV was shown to transmit efficiently via the vaginal route in macaques with detectable plasma viremia persisting for a year in some animals. Analyses of virus load in tissues of infected animals revealed accumulation of viral RNA in lymph nodes and spleen with levels correlating with plasma viremia. RT-SHIV was inhibited by dapivirine, nevirapine, efavirenz and tenofovir in vitro, although the effect was less pronounced with tenofovir. Virus isolated from infected animals at early and later time points had limited changes in RT sequences and exhibited similar sensitivity to RT inhibitors as the challenge virus. The vaginal transmission of RT SHIV demonstrated here suggests this virus may possibly be used in the nonhuman primate model for limited evaluation of RT inhibitors applied vaginally.
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Affiliation(s)
- Ranajit Pal
- Advanced BioScience Laboratories Inc., Kensington, MD 20895, USA.
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Brown GV, Hansen SB, Träbert E, Beiersdorfer P, Widmann K, Chen H, Chung HK, Clementson JHT, Gu MF, Thorn DB. Investigation of the 2p_{32}-3d_{52} line emission of Au;{53+}-Au;{69+} for diagnosing high energy density plasmas. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:066406. [PMID: 18643382 DOI: 10.1103/physreve.77.066406] [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: 02/05/2008] [Indexed: 05/26/2023]
Abstract
Measurements of the L -shell emission of highly charged gold ions were made under controlled laboratory conditions using the SuperEBIT electron beam ion trap, allowing detailed spectral observations of lines from Fe-like Au53+ through Ne-like Au69+ . Using atomic data from the Flexible Atomic Code, we have identified strong 3d_{52}-->2p_{32} emission features that can be used to diagnose the charge state distribution in high energy density plasmas, such as those found in the laser entrance hole of hot hohlraum radiation sources. We provide collisional-radiative calculations of the average ion charge Z as a function of temperature and density, which can be used to relate charge state distributions inferred from 3d_{52}-->2p_{32} emission features to plasma conditions, and investigate the effects of plasma density on calculated L -shell Au emission spectra.
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Affiliation(s)
- G V Brown
- Lawrence Livermore National Laboratory, Livermore, California 94550-9234, USA
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Abstract
This study aims to present a new model measuring the economic value of public libraries, combining the dissonance minimizing (DM) and information bias minimizing (IBM) format in the contingent valuation (CV) surveys. The possible biases which are tied to the conventional CV surveys are reviewed. An empirical study is presented to compare the model with the conventional CVM and DM +IBM format. A cost—benefit analysis is used as a tool to determine if the benefit of public libraries outweighs the cost incurred in providing the services. The study conducts a case study in a public library to demonstrate how public libraries could apply the approach to their local studies.
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Affiliation(s)
- Hye-Kyung Chung
- KDI School of Public Policy and Management PO Box 184 Cheongyangri-Dong Dongdaemun-Gu Seoul 130-650 Korea,
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Ping Y, Shepherd R, Lasinski BF, Tabak M, Chen H, Chung HK, Fournier KB, Hansen SB, Kemp A, Liedahl DA, Widmann K, Wilks SC, Rozmus W, Sherlock M. Absorption of short laser pulses on solid targets in the ultrarelativistic regime. Phys Rev Lett 2008; 100:085004. [PMID: 18352633 DOI: 10.1103/physrevlett.100.085004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2007] [Revised: 08/21/2007] [Indexed: 05/26/2023]
Abstract
We report the first direct measurements of total absorption of short laser pulses on solid targets in the ultrarelativistic regime. The data show an enhanced absorption at intensities above 10(20) W/cm(2), reaching 60% for near-normal incidence and 80%-90% for 45 degrees incidence. Two-dimensional particle-in-cell simulations demonstrate that such high absorption is consistent with both interaction with preplasma and hole boring by the intense laser pulse. A large redshift in the second harmonic indicates a surface recession velocity of 0.035c.
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Affiliation(s)
- Y Ping
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Chen H, Shepherd R, Chung HK, Kemp A, Hansen SB, Wilks SC, Ping Y, Widmann K, Fournier KB, Dyer G, Faenov A, Pikuz T, Beiersdorfer P. Fast-electron-relaxation measurement for laser-solid interaction at relativistic laser intensities. Phys Rev E Stat Nonlin Soft Matter Phys 2007; 76:056402. [PMID: 18233771 DOI: 10.1103/physreve.76.056402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Revised: 09/25/2007] [Indexed: 05/25/2023]
Abstract
We present measurements of the fast-electron-relaxation time in short-pulse (0.5 ps) laser-solid interactions for laser intensities of 10(17), 10(18), and 10(19) Wcm2, using a picosecond time-resolved x-ray spectrometer and a time-integrated electron spectrometer. We find that the laser coupling to hot electrons increases as the laser intensity becomes relativistic, and that the thermalization of fast electrons occurs over time scales on the order of 10 ps at all laser intensities. The experimental data are analyzed using a combination of models that include Kalpha generation, collisional coupling, and plasma expansion.
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Affiliation(s)
- H Chen
- Physics and Advanced Technologies, Lawrence Livermore National Laboratory, University of California, Livermore, California 94550, USA
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Chung HK, Cheon GJ, Choi CW, Kim MJ, Lee SJ, Lim SM. Comparison of Cellular Metabolic Responses of18F-FDG According to the Effect ofβ-Irradiation in p53 Wild and Deleted Cell Lines. Cancer Biother Radiopharm 2007; 22:636-43. [DOI: 10.1089/cbr.2007.331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Hye-Kyung Chung
- Laboratory of Nuclear Medicine Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Gi Jeong Cheon
- Laboratory of Nuclear Medicine Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
- Department of Nuclear Medicine, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Chang Woon Choi
- Department of Nuclear Medicine, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Min-Jung Kim
- Laboratory of Radiation Experimental Therapeutics, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Su-Jae Lee
- Laboratory of Radiation Experimental Therapeutics, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Sang Moo Lim
- Department of Nuclear Medicine, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
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Cristillo AD, Lisziewicz J, He L, Lori F, Galmin L, Trocio JN, Unangst T, Whitman L, Hudacik L, Bakare N, Whitney S, Restrepo S, Suschak J, Ferrari MG, Chung HK, Kalyanaraman VS, Markham P, Pal R. HIV-1 prophylactic vaccine comprised of topical DermaVir prime and protein boost elicits cellular immune responses and controls pathogenic R5 SHIV162P3. Virology 2007; 366:197-211. [PMID: 17499328 DOI: 10.1016/j.virol.2007.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [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: 03/01/2007] [Revised: 03/29/2007] [Accepted: 04/11/2007] [Indexed: 11/30/2022]
Abstract
Topical DNA vaccination (DermaVir) facilitates antigen presentation to naive T cells. DermaVir immunization in mice, using HIV-1 Env and Gag, elicited cellular immune responses. Boosting with HIV-1 gp120 Env and p41 Gag augmented Th1 cytokine levels. Intramuscular DNA administration was less efficient in priming antigen-specific cytokine production and memory T cells. In rhesus macaques, DermaVir immunization induced Gag- and Env-specific Th1 and Th2 cytokines and generation of memory T cells. Boosting of DermaVir-primed serum antibody levels was noted following gp140(SHIV89.6P)/p27(SIV) immunization. Rectal challenge with pathogenic R5-tropic SHIV162P3 resulted in control of plasma viremia (4/5 animals) that was reflected in jejunum, colon and mesenteric lymph nodes. An inverse correlation was found between Gag- and Env-specific central memory T cell responses on the day of challenge and plasma viremia at set point. Overall, the topical DermaVir/protein vaccination yields central memory T cell responses and facilitates control of pathogenic SHIV infection.
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Affiliation(s)
- Anthony D Cristillo
- Advanced BioScience Laboratories, Inc., 5510 Nicholson Lane, Kensington, MD 20895, USA.
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46
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Cheon GJ, Chung HK, Choi JA, Lee SJ, Ahn SH, Lee TS, Choi CW, Lim SM. Cellular metabolic responses of PET radiotracers to (188)Re radiation in an MCF7 cell line containing dominant-negative mutant p53. Nucl Med Biol 2007; 34:425-32. [PMID: 17499732 DOI: 10.1016/j.nucmedbio.2007.01.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 01/28/2007] [Accepted: 01/29/2007] [Indexed: 01/16/2023]
Abstract
UNLABELLED We investigated the relations between the cell uptakes of metabolic radiotracers and beta-radiation pretreatment using a dominant mutant p53 (p53mt) cell line to evaluate the effects of p53 genes on (18)F labeled positron emission tomography (PET) radiotracer uptakes. METHODS pCMV-Neo-Bam (control), which contains a neo-resistance marker, and p53 dominant-negative mutant expression constructs were stably transfected into MCF7 cell line. Cells were plated in 24-well plates at 1.0x10(5) cells for 18 h. Rhenium-188 ((188)Re) (a beta emitter) was added to the medium (3.7, 18.5, 37 MBq) and incubated for 24 h. We performed gamma-counting to determine the cellular uptakes of 2-[(18)F]fluoro-2-deoxy-d-glucose (FDG), o-(2-[(18)F]fluoroethyl)-l-tyrosine (FET) and 2'-[(18)F]fluoro-2'-deoxythymidine (FLT) (370 kBq, 60 min). Cell viabilities were determined by trypan blue staining and flow cytometry. RESULTS p53mt cells showed 1.5-2-fold higher FDG uptake than wild-type p53 cells in basal condition, and the difference of FDG uptake was greater after (188)Re treatment (P<.01). FET uptake increased with (188)Re dose without a significant difference between p53 statuses. p53mt cells showed lower FLT uptake than wild-type p53 cells in basal condition, and the difference of FLT uptake was greater after (188)Re treatment. By cell viability testing and FACS analysis, p53mt cells showed lower viability and a larger apoptotic fraction (sub-G1) than wild-type p53 cells after (188)Re treatment. CONCLUSION We speculate that p53 dysfunction increases glucose and decreases thymidine metabolism in cancer cells and that this may be exaggerated by (188)Re beta-radiation. Our findings suggest that FDG could reflect tumor viability and malignant potential after (188)Re beta-radiation treatment, whereas FLT could be a more useful PET radiotracer for assessing therapeutic response to beta-radiation, especially in cancer cells with an altered function of p53.
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Affiliation(s)
- Gi Jeong Cheon
- Laboratory of Nuclear Medicine Research, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, South Korea.
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Hansen SB, Faenov AY, Pikuz TA, Fournier KB, Shepherd R, Chen H, Widmann K, Wilks SC, Ping Y, Chung HK, Niles A, Hunter JR, Dyer G, Ditmire T. Temperature determination using Kalpha spectra from M -shell Ti ions. Phys Rev E Stat Nonlin Soft Matter Phys 2005; 72:036408. [PMID: 16241580 DOI: 10.1103/physreve.72.036408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2005] [Indexed: 05/05/2023]
Abstract
The compact multipulse terawatt (COMET) laser facility at LLNL was used to irradiate Al-coated 2-50 microm Ti foils with approximately 10(19) W cm(-2) , 500 fs, 3-6 J laser pulses. Laser-plasma interactions on the front side of the target generate hot electrons with sufficient energy to excite inner-shell electrons in Ti, creating Kalpha emission which has been measured using a focusing spectrometer with spatial resolution aimed at the back surface of the targets. The spatial extent of the emission varies with target thickness. The high spectral resolution (lambda/Deltalambda approximately equal to 3800) is sufficient to measure broadening of the Kalpha emission feature due to the emergence of blueshifted satellites from ionized Ti in a heated region of the target. A self-consistent-field model is used to spectroscopically diagnose thermal electron temperatures up to 40 eV in the strongly coupled Ti plasmas.
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Affiliation(s)
- S B Hansen
- Lawrence Livermore National Laboratory, P.O. Box 808, L-473, Livermore, California 94550, USA
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Affiliation(s)
- K Jung
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu 151-742, Seoul, Republic of Korea
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Chung HK, Young HA, Goon PKC, Heidecker G, Princler GL, Shimozato O, Taylor GP, Bangham CRM, Derse D. Activation of interleukin-13 expression in T cells from HTLV-1-infected individuals and in chronically infected cell lines. Blood 2003; 102:4130-6. [PMID: 12920029 DOI: 10.1182/blood-2003-04-1043] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) infection profoundly alters T-cell gene expression, and the dysregulated synthesis of cytokines could influence the course and pathologic consequences of infection. In the process of screening T-cell lines for T helper 1 (Th1) and Th2 cytokine mRNAs, we observed that interleukin-13 (IL-13) mRNA was highly expressed in HTLV-1-infected, IL-2-dependent T-cell lines. IL-9 and interferon gamma (IFN-gamma) mRNAs were also expressed at high levels in chronically infected cell lines. IL-5 mRNA was detected in 60% of the HTLV-1-infected cell lines, but mRNAs for IL-4, IL-10, IL-2, and IL-15 were either below detection limits or did not correlate with HTLV-1 infection. Transcriptional activation of the IL-13 promoter by the HTLV-1 Tax trans-regulatory protein was demonstrated in Jurkat T cells transiently transfected with an IL-13 promoter-reporter plasmid. The clinical relevance of these observations was demonstrated by immunofluorescent staining and flow cytometry of lymphocytes obtained from HTLV-1-infected patients. These studies revealed that IL-13 production was directly related to the level of Tax expression in the infected CD4+ T cells soon after in vitro culture. As IL-13 plays key roles in tumor immunosurveillance, asthma, and central nervous system inflammation, it may contribute to the pathophysiology of HTLV-1-associated diseases.
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Affiliation(s)
- Hye-Kyung Chung
- Basic Research Laboratory, Center for Cancer Research, NCI-Frederick, Frederick, MD 21702-1201, USA
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