1
|
An JM, Hur SH, Kim H, Lee JH, Kim YK, Sim KS, Lee SE, Kim HJ. Determination of the geographical origin of chicken (breast and drumstick) using ICP-OES and ICP-MS: Chemometric analysis. Food Chem 2024; 437:137836. [PMID: 37924759 DOI: 10.1016/j.foodchem.2023.137836] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/06/2023]
Abstract
This study aimed to develop a geographical origin discrimination analytical method for chicken breasts and drumsticks based on inductively coupled plasma (ICP). The sixty elements were set as variables, and the geographical origin discrimination analysis was conducted through chemometrics. In orthogonal partial least square discriminant analysis (OPLS-DA), twenty-three variable importance in projection (VIP) elements were selected in chicken breasts, and twenty-eight VIP elements were selected in drumsticks. The importance of the selected elements was displayed by the area under the curve (AUC) value of the receiver operating characteristic (ROC). Verification of OPLS-DA was performed through permutation test and good results were obtained. A heatmap was also used as a method for determining the geographical origin, and each top element discriminant classification was 100 % accurate, as determined through canonical discriminant analysis (CDA). This method shows potential as a food analysis tool and can accurately determine the geographic origin of chicken.
Collapse
Affiliation(s)
- Jae-Min An
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea; Department of Applied Bioscience, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Suel Hye Hur
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Hyoyoung Kim
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Ji Hye Lee
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Yong-Kyoung Kim
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Kyu Sang Sim
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Sung-Eun Lee
- Department of Applied Bioscience, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Ho Jin Kim
- National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea.
| |
Collapse
|
2
|
Sim KS, Kim H, Hur SH, Na TW, Lee JH, Kim HJ. Geographical origin discriminatory analysis of onions: Chemometrics methods applied to ICP-OES and ICP-MS analysis. Food Res Int 2024; 175:113676. [PMID: 38129025 DOI: 10.1016/j.foodres.2023.113676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 12/23/2023]
Abstract
Geographical origin is an important determinant of agricultural product quality and safety. Herein, inductively coupled plasma (ICP) analysis was applied to determine the inorganic elemental content of onions and identify their geographical origin (Korean or Chinese). Chemometric, including principal component analysis (PCA), partial least squares discriminant analysis (PLS-DA), and orthogonal partial least square discriminant analysis (OPLS-DA) were applied to the ICP results. OPLS-DA distinguished each group, and 17 elements with variable importance in projection (VIP) values of ≥ 1 were selected. The receiver operating characteristic (ROC) curve had an area under the curve (AUC) of 1, indicating excellent discriminatory power. Differences in elemental content between groups were visually observed in a heatmap, and the country of origin was determined with 100% accuracy using canonical discriminant analysis (CDA). This method accurately distinguishes between Korean and Chinese onions and is expected to be beneficial for identifying agricultural products.
Collapse
Affiliation(s)
- Kyu Sang Sim
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea
| | - Hyoyoung Kim
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea
| | - Suel Hye Hur
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea
| | - Tae Woong Na
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea
| | - Ji Hye Lee
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea
| | - Ho Jin Kim
- National Agricultural Products Quality Management Service, Gimcheon 39660, Republic of Korea.
| |
Collapse
|
3
|
Kim H, Joo Baek E, Kim YK, Park H, Hye Hur S, Kim JE, Jin Kim H. Development of a method for analysis and risk assessment of residual pesticides in ginseng using liquid and gas chromatography-tandem mass spectrometry. Food Chem 2023; 427:136675. [PMID: 37385061 DOI: 10.1016/j.foodchem.2023.136675] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/01/2023] [Accepted: 06/18/2023] [Indexed: 07/01/2023]
Abstract
In this study, we developed a method for detecting 335 pesticides in ginseng using liquid chromatography quadrupole mass spectrometry (LC-MS/MS) and gas chromatography quadrupole mass spectrometry (GC-MS/MS). Additionally, the linearity, sensitivity, selectivity, accuracy, and precision of the method was validated. The limits of detection (LOD) and limits of quantification (LOQ) for the instrument used in these experiments was 0.1-5.8 μg/kg and 0.3-17.5 μg/kg, respectively. The average recovery was 71.6-113.4%. From 2016 to 2019, 467 ginseng samples were analyzed, of which 304 samples detected pesticide residues, but most of them were below the standard. It can be observed that the hazard quotient (HQ) of ginseng for detected pesticides was less than 1, thus implying that the risk was low. Hence, in this study, we developed a specific, reliable, and suitable method for a fast and simultaneous analysis of 335 pesticides in ginseng.
Collapse
Affiliation(s)
- Hyoyoung Kim
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Eun Joo Baek
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Yong-Kyoung Kim
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Hyejin Park
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Suel Hye Hur
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Jang-Eok Kim
- Major in Environment and Life Chemistry, School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea.
| | - Ho Jin Kim
- Experiment Research Institute, National Agricultural Products Quality Management Service, 141, Yongjeon-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea.
| |
Collapse
|
4
|
Hur SH, Kim S, Kim H, Jeong S, Chung H, Kim YK, Kim HJ. Geographical discrimination of dried chili peppers using femtosecond laser ablation-inductively coupled plasma-mass spectrometry (fsLA-ICP-MS). Curr Res Food Sci 2023; 6:100532. [PMID: 37377492 PMCID: PMC10290993 DOI: 10.1016/j.crfs.2023.100532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/09/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
This study presents a method for discriminating the geographical origin of dried chili peppers using femtosecond laser ablation-inductively coupled plasma-mass spectrometry (fsLA-ICP-MS) and multivariate analysis, such as orthogonal partial least squares discriminant analysis (OPLS-DA), heatmap analysis, and canonical discriminant analysis (CDA). Herein, 102 samples were analyzed for the content of 33 elements using optimized conditions of 200 Hz (repetition rate), 50 μm (spot size), and 90% (energy). Significant differences in count per second (cps) values of the elements were observed between domestic and imported peppers, with variations of up to 5.66 times (133Cs). The OPLS-DA model accuracy achieved an R2 of 0.811 and a Q2 of 0.733 for distinguishing dried chili peppers of different geographical origins. The variable importance in projection (VIP) and s-plot identified elements 10 and 3 as key to the OPLS-DA model, and in the heatmap, six elements were estimated to be significant in discriminating between domestic and imported samples. Furthermore, CDA showed a high accuracy of 99.02%. This method can ensure food safety for consumers, and accurately determine the geographic origin of agricultural products.
Collapse
Affiliation(s)
- Suel Hye Hur
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Seyeon Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Hyoyoung Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Seongsoo Jeong
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hoeil Chung
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yong-Kyoung Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Ho Jin Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| |
Collapse
|
5
|
Hye Hur S, Kim H, Kim YK, An JM, Hye Lee J, Jin Kim H. Discrimination between Korean and Chinese Kimchi using inductively coupled plasma-optical emission spectroscopy and mass spectrometry: A multivariate analysis of Kimchi. Food Chem 2023; 423:136235. [PMID: 37163917 DOI: 10.1016/j.foodchem.2023.136235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 05/12/2023]
Abstract
Kimchi has been designated as one of the world's five healthiest foods, and it is a traditional Korean fermented food. The purpose of this study was to investigate whether the origin of Kimchi can be discriminated against by using inorganic elements to develop a more accurate method. The OPLS-DA showed that the R2 and Q2 values were 0.908 and 0.81, a high-quality model. We selected 24 elements (133Cs, 238U, 88Sr, K, 157Gd, Na, Mg, 139La, P, 141Pr, 72Ge, 146Nd, 147Sm, 153Eu, 55Mn, 165Ho, 163Dy, 166Er, Fe, 172Yb, 169Tm, 185Re, 175Lu, and 118Sn) with VIP 1 or higher in the OPLS-DA model. In ROC, the selected elements had an accuracy of 100%. The heatmap confirmed the contents of rare earth elements (REEs) in Korean and Chinese Kimchi, the accuracy of distinguishing classification in CDA is 100%. Such results will help to distinguish the origin of agricultural products through inorganic analysis.
Collapse
Affiliation(s)
- Suel Hye Hur
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Hyoyoung Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Yong-Kyoung Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Jae-Min An
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Ji Hye Lee
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea
| | - Ho Jin Kim
- National Agricultural Products Quality Management Service, Gimcheon, 39660, Republic of Korea.
| |
Collapse
|
6
|
Park KW, Kang J, Koo BK, Rhee TM, Yang HM, Won KB, Rha SW, Bae JW, Lee NH, Hur SH, Han JK, Shin ES, Kim HS. Aspirin vs. Clopidogrel as a Chronic maintenance monotherapy after PCI in patients with high ischemic risk and high bleeding risk: Subgroup analysis of the HOST-EXAM trial. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.074] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
OnBehalf
on behalf of the HOST-EXAM investigators
Background
The HOST-EXAM randomized clinical trial recently performed a comparison of clopidogrel monotherapy vs. aspirin monotherapy in patients requiring indefinite antiplatelet monotherapy after percutaneous coronary intervention (PCI). This study randomized 5,438 patients who maintained dual antiplatelet therapy without clinical events for 6–18 months after PCI with drug-eluting stents (DES) to receive a monotherapy agent of clopidogrel 75 mg once daily or aspirin 100 mg once daily for 24 months. During the 24-month follow-up, the primary outcome (a composite of all-cause death, non-fatal myocardial infarction, stroke, readmission due to acute coronary syndrome, and Bleeding Academic Research Consortium (BARC) bleeding type 3 or greater) rate was significantly lower in the clopidogrel group (hazard ratio [HR] 0.73 [95% CI 0.59–0.90]; p = 0.0035). However, it is uncertain whether the beneficial effect of clopidogrel will be consistent in patients with high ischemic risk or those with high bleeding risk.
Methods
This is a post-hoc analysis of the HOST-EXAM trial. A high ischemic risk was defined as those who had at least 1 of the following procedural features: 3 vessels treated, ≥3 stents implanted, ≥3 lesions treated, bifurcation PCI, total stent length >60 mm, or left main PCI. Patients with high bleeding risk were defined according to the Academic Research Consortium for High Bleeding Risk (ARC-HBR) criteria. The co-primary outcome were thrombotic endpoints (a composite of cardiac death, non-fatal myocardial infarction, ischemic stroke, readmission due to acute coronary syndrome, and definite or probable stent thrombosis) and bleeding endpoints (BARC type ≥2 bleeding events) at 24-month follow-up.
Results
Among the total population, 22.1% had high ischemic risk and 21.4% had high bleeding risk. Complex PCI was not associated with a higher risk of thrombotic endpoints, nor bleeding endpoints. For patients with a high bleeding risk, these patients had a higher risk of both thrombotic endpoints (HR 1.545, 95% CI 0.141-2.092, p = 0.005) and bleeding endpoints (HR 3.418, 95% CI 2.413-4.840, p < 0.001). The primary results focusing on the interaction between high ischemic risk, high bleeding and the antiplatelet regimen will be presented.
Conclusion
The current post-hoc analysis of the HOST-EXAM trial will evaluate the efficacy of clopidogrel monotherapy vs. aspirin monotherapy during the chronic maintenance period after PCI, in patients with high ischemic risk or those with high bleeding risk.
Collapse
Affiliation(s)
- K W Park
- Chungbuk National University Hospital, Cheongju, Korea (Republic of)
| | - J Kang
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - B K Koo
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - T M Rhee
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - H M Yang
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - K B Won
- Ulsan University Hospital, Ulsan, Korea (Republic of)
| | - S W Rha
- Korea University Guro Hospital, Seoul, Korea (Democratic People"s Republic of)
| | - J W Bae
- Chungbuk National University Hospital, Cheongju, Korea (Republic of)
| | - N H Lee
- Hangang Sacred Hospital, Seoul, Korea (Republic of)
| | - S H Hur
- Keimyung University Hospital, Daegu, Korea (Republic of)
| | - J K Han
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - E S Shin
- Ulsan University Hospital, Ulsan, Korea (Republic of)
| | - H S Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| |
Collapse
|
7
|
Lee JE, Jang SH, Hur SH, Bang HY, Bae IK, Kim HJ. LC-MS/MS and GC-MS/MS cross-checking analysis method for 247 pesticide residues in sweet pepper ( Capsicum annuum). International Journal of Food Properties 2021. [DOI: 10.1080/10942912.2021.1993251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ji Eun Lee
- Gyeongnam Provincial Office National Agricultural Products Quality Management Service, Busan, Korea
| | - Sung Ho Jang
- Gyeongnam Provincial Office National Agricultural Products Quality Management Service, Busan, Korea
| | - Suel Hye Hur
- Experiment Research Institute National Agricultural Products Quality Management Service, Gimcheon Korea
| | - Han Yeol Bang
- Gyeongnam Provincial Office National Agricultural Products Quality Management Service, Busan, Korea
| | - In-kyung Bae
- National Institute for Korean medicine development, Department of Public Infrastructure Operation Korean Medicine Manufacture Center Korea Daegu
| | - Ho Jin Kim
- Gyeongnam Provincial Office National Agricultural Products Quality Management Service, Busan, Korea
| |
Collapse
|
8
|
Kim M, Ahn Y, Jeong MH, Sim DS, Hong YJ, Kim JH, Ahn TH, Seung KB, Kim HS, Gwon HC, Chae SC, Hur SH, Cha KS. P3127Optimal revascularization strategy in non-ST-segment elevation myocardial infarction with multivessel coronary artery disease: staged vs. one-time vs. culprit-only revascularization. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0202] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background/Introduction
Although optimal revascularization strategy in patients with ST-segment elevation myocardial infarction with multivessel coronary artery disease (MVD) was well established, there are few studies which investigated optimal revascularization strategy in non-ST-segment elevation myocardial infarction (NSTEM) with MVD.
Purpose
We investigated 2-year clinical outcomes according to strategy of revascularization in patients with NSTEMI and MVD.
Methods
Between November 2011 and October 2015, a total of 2474 patients with NSTEMI and MVD who underwent successful percutaneous coronary intervention were analyzed from the Korea Acute Myocardial Infarction Registry-National Institute of Health (staged 308, one-time 1043 and culprit-only 1123 patients). We did not include patients with left main disease and cardiogenic shock. Primary endpoint was major adverse cardiac events (MACE: the composite of cardiac death, myocardial infarction [MI] or target-vessel revascularization [TVR]) during 2-year follow-up (median 737 days [interquartile range 705–764]). We also analyzed the of all-cause mortality, stroke and non-TVR.
Results
Baseline characteristics such as age, gender, and prevalence of atherosclerotic risk factors between multivessel revascularization (MVR; staged or one-time revascularization) and CVR were similar. There was also no difference in symptom to balloon time in 2 groups. MACE occurred in 305 patients (12.3%) during 2-year follow-up. MVR could reduce incidence of MACE (10.2% vs. 14.9%; adjusted hazard ratio [HR] 1.50 for CVR, 95% confidence interval [CI] 1.20–1.88, p<0.001), all-cause death (8.4% vs. 12.1%; adjusted HR 1.45 for CVR, 95% CI 1.13–1.87, p=0.003) and non-TVR (1,9% vs. 7.0%; adjusted HR 3.99 for CVR, 95% CI 2.55–6.27, p<0.001). There was no difference in incidence of stroke between MVR and CVR. We also analyzed same analysis between staged and one-time revascularization. Complete revascularization was more achieved in one-time revascularization group compared to staged revascularization group (62.0% vs. 76.1%, p<0.001). In multivariate Cox-regression analysis, staged revascularization was not associated with improved clinical outcomes in terms of MACE (HR 0.74, 95% CI 0.50–1.09, p=0.126), all-cause death (HR 1.07, 95% CI 0.69–1.68, p=0.759), stroke (HR 1.75, 95% CI 0.68–4.52, p=0.245) and non-TVR (HR 2.56, 95% CI 0.75–8.68, p=0.132). Analysis by propensity score matching and inverse probability of treatment weighting did not significantly affect the results.
Conclusions
MVR reduced 2-year adverse cardiac events in patients with NSTEMI and MVD compared to CVR. However, staged revascularization was not superior to one-time revascularization for reducing MACE among NSTEMI patients with MVD who received MVR.
Collapse
Affiliation(s)
- M Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - Y Ahn
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - D S Sim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - Y J Hong
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - J H Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - T H Ahn
- Gil Hospital, Incheon, Korea (Republic of)
| | - K B Seung
- Seoul St. Mary's Hospital, Seoul, Korea (Republic of)
| | - H S Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - H C Gwon
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - S C Chae
- Kyungpook National University Hospital, Daegu, Korea (Republic of)
| | - S H Hur
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea (Republic of)
| | - K S Cha
- Pusan National University Hospital, Pusan, Korea (Republic of)
| |
Collapse
|
9
|
Cho YK, Jun SW, Yoon HJ, Nam CW, Hur SH. 1464Up to 10-year outcome after simple crossover stenting in left main without strut opening over ostial circumflex artery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y K Cho
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| | - S W Jun
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| | - H J Yoon
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| | - C W Nam
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| | - S H Hur
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| |
Collapse
|
10
|
Sim DS, Jeong MH, Kim HS, Gwon HC, Seung KB, Rha SW, Chae SC, Kim CJ, Cha KS, Park JS, Yoon JH, Chae JK, Joo SJ, Choi DJ, Hur SH. P4610Utility of GRACE and ACUITY-HORIZONS risk scores to guide dual antiplatelet therapy in patients with acute myocardial infarction undergoing drug-eluting stenting. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D S Sim
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - M H Jeong
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - H S Kim
- Seoul National University Hospital, Seoul, Korea Republic of
| | - H C Gwon
- Samsung Medical Center, Seoul, Korea Republic of
| | - K B Seung
- The Catholic University of Korea, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Seoul, Korea Republic of
| | - S C Chae
- Kyungpook National University Hospital, Daegu, Korea Republic of
| | - C J Kim
- Kyunghee University, Seoul, Korea Republic of
| | - K S Cha
- Pusan National University Hospital, Pusan, Korea Republic of
| | - J S Park
- Yeungnam University Hospital, Daegu, Korea Republic of
| | - J H Yoon
- Wonju Medical College, Wonju, Korea Republic of
| | - J K Chae
- Chonbuk National University Hospital, Jeonju, Korea Republic of
| | - S J Joo
- Jeju National University Hospital, Jeju, Korea Republic of
| | - D J Choi
- Seoul National University Bundang Hospital, Seongnam, Korea Republic of
| | - S H Hur
- Keimyung University Hospital Dongsan Medical Center, Daegu, Korea Republic of
| | | |
Collapse
|
11
|
Park JJ, Byun IG, Yu JC, Park SR, Ju DJ, Hur SH, Park TJ. Analysis of nitrifying bacterial communities in aerobic biofilm reactors with different DO conditions using molecular techniques. Water Sci Technol 2008; 57:1889-1899. [PMID: 18587175 DOI: 10.2166/wst.2008.622] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In order to assess the relationship between the dissolved oxygen (DO) concentration and the characteristics of nitrifying bacterial communities in an aerobic biofilm reactor, molecular techniques including denaturing gradient gel electrophoresis (DGGE)/cloning based on PCR targeting 16S rRNA and the amoA gene and fluorescence in situ hybridisation (FISH) were conducted. The D-1, D-2, D-3 and D-4 reactors with different DO concentrations (1, 3, 5 and 7 mg/L, respectively) were set up in the thermostat and acclimated. The optimal DO concentration with stable nitrification efficiency was above 5.0 mg/L. As was shown by the results of DGGE and cloning, the community of ammonia-oxidising bacteria (AOB) and the ratio of Nitrosomonas sp. changed only slightly despite their differing nitrification efficiencies. The results of FISH indicated that higher DO concentrations resulted in an increase in AOB and nitrite-oxidising bacteria (NOB), and a reduction in heterotrophic microorganisms. The INT-dehydrogenase activity (DHA) test demonstrated that the activity of AOB decreased with reductions in the DO concentration. This means that the DO concentration does not influence the community of AOB, but rather the activity of AOB. In the relationship between the attached biomass and the nitrification efficiency, only the active biomass affected the nitrification efficiencies.
Collapse
Affiliation(s)
- J J Park
- School of Civil and Environmental Engineering, Pusan National University, 609-735, Busan, Korea
| | | | | | | | | | | | | |
Collapse
|
12
|
Nam HU, Kim YO, Lee JH, Hur SH, Park TJ. Automatic control of external carbon source addition for nitrogen removal in sewage with low C/N ratios. Water Sci Technol 2004; 49:245-249. [PMID: 15137430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
For cost-effective nitrogen removal from sewage with low C/N ratios, an automatic control system for the addition of external carbon based on oxidation-reduction potential (ORP) data in an anoxic reactor has been developed. In this study, it was carried out with a pilot-scale modified Bardenpho process. This consisted of anoxic1, aerobic1, anoxic2 and aerobic2 stages with an external recycle ratio of 150% (Q/Qinf), and a media packing ratio of 2.4%-2.9% (v/v) in the aerobic reactor. As a result of applying the automatic control system for the minimization of the external carbon source dosage, the dosage was decreased by about 20%. This estimate was based on ORP compared with a stable dosage of 75 mg/L based on the C/NOx-N ratio of the anoxic influent. It was necessary that the ORP set-value be regulated from -120 mV to -80 mV because influent NH4+-N concentration varied from 12 to 15 mg/L due to rainfall. Correspondingly, the demanded dosages were decreased. Drift of the the real-time value in control system was more stable after changing the ORP set-value from -120 mV to -80 mV.
Collapse
Affiliation(s)
- H U Nam
- Department of Environmental Engineering, Pusan National University, Busan, 609-735, Korea.
| | | | | | | | | |
Collapse
|
13
|
Lee DH, Hur SH, Choi SJ, Jung SM, Ryu DS, Park MS, Lee SY. A recurred carotid siphon pseudoaneurysm after detachable coil embolization. Successfull endovascular management with detachable balloons. Interv Neuroradiol 2002; 8:61-5. [PMID: 20594514 DOI: 10.1177/159101990200800111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2002] [Accepted: 02/05/2002] [Indexed: 11/17/2022] Open
Abstract
SUMMARY Massive posterior epistaxis is one of the peculiar symptoms of pseudoaneurysms of the carotid siphon. We experienced a case of trauma- related pseudoaneurysm of the carotid siphon. The lesion was initially silent except for the mass effect. We initially treated the lesion with platinum detachable coil embolization of the pseudoaneurysm sac with preservation of the parent artery. However, the patient had delayed massive epistaxis with recurrence of the pseudoaneurysm. The patient was subsequently managed with endovascular occlusion of the affected internal carotid artery using detachable balloons. Complete internal carotid artery trapping is recommended as an initial treatment modality if the patient can tolerate to the occlusion test. Careful observation and follow-up of the patient is required if the lesion is inevitably managed with coil embolization of the pseudoaneurysm sac alone.
Collapse
Affiliation(s)
- D H Lee
- Department of Diagnostic Radiology, Kangnung Hospital, College of Medicine University of Ulsan, Korea -
| | | | | | | | | | | | | |
Collapse
|
14
|
Hur SH, Kitamura K, Morino Y, Honda Y, Jones M, Korr KS, Reen B, Cooper CJ, Niess GS, Christie L, Corey W, Messenger J, Yock PG, Cummins F, Fitzgerald PJ. Efficacy of postdeployment balloon dilatation for current generation stents as assessed by intravascular ultrasound. Am J Cardiol 2001; 88:1114-9. [PMID: 11703954 DOI: 10.1016/s0002-9149(01)02044-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Adjunctive balloon dilatation strategy has been shown to improve optimal stent deployment. As improvements in current stent designs evolve, less adjunctive balloon dilatation may be needed. However, few data currently exist to support this practice. We evaluated 88 native coronary lesions treated with single stent implantation (Nir, Tristar or S670). Serial intravascular ultrasound was performed after successful stent deployment and again after adjunctive balloon dilatation. To investigate further the precise expansion characteristics of the stents, serial volumetric intravascular ultrasound analyses were performed in 40 patients with automated pullback. After adjunctive balloon dilatation, minimal stent area increased significantly, from 6.4 +/- 2.1 to 7.4 +/- 2.2 mm(2) (p <0.001). Volumetric analysis showed a corresponding increase in stent volume index (6.6 +/- 1.8 to 7.5 +/- 2.0 mm(3)/mm, p <0.001). In the analysis of cross sections at 0.5-mm axial intervals, the percentage of cross sections, where stent area was > or =80% of the average reference lumen area, increased from 51% to 78% (p <0.001). Similarly, the percentage of cross sections, where stent area was > or =90% of the average reference lumen area, increased from 29% to 56% (p <0.001) with postdilatation. Postdeployment high- pressure balloon dilatation improved minimal stent area and volumetric expansion throughout the stented segment.
Collapse
Affiliation(s)
- S H Hur
- Center for Research in Cardiovascular Interventions, Stanford University Medical Center, Stanford, California 94305-5637, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Abstract
Extracranial carotid artery dissection may manifest as arterial stenosis or occlusion, or as dissecting aneurysm formation. Anticoagulation and/or antiplatelet therapy is the first-line treatment, but because it is effective and less invasive than other procedures, endovascular treatment of carotid artery dissection has recently attracted interest. We encountered two consecutive cases of trauma-related extracranial internal carotid artery dissection, one in the suprabulbar portion and one in the subpetrosal portion. We managed the patient with suprabulbar dissection using a self-expandable metallic stent and managed the patient with subpetrosal dissection using a balloon-expandable metallic stent. In both patients the dissecting aneurysm disappeared, and at follow-up improved luminal patency was observed.
Collapse
Affiliation(s)
- D H Lee
- Department of Diagnostic Radiology, Kangnung Hospital, College of Medicine, University of Ulsan, Kangnung-si, Kangwon-do, Korea.
| | | | | | | | | | | |
Collapse
|