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Jeon JW, Kim CS, Kim HJ, Lee CH, Hwang SM, Choi SD. Spatial distribution, source identification, and anthropogenic effects of brominated flame retardants in nationwide soil collected from South Korea. Environ Pollut 2021; 272:116026. [PMID: 33218769 DOI: 10.1016/j.envpol.2020.116026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 10/17/2020] [Accepted: 11/06/2020] [Indexed: 06/11/2023]
Abstract
Soil samples were collected at 61 sites of the national monitoring network for persistent organic pollutants (POPs) in South Korea. The target compounds were brominated flame retardants (BFRs), including polybrominated diphenyl ethers (PBDEs), polybrominated biphenyls (PBBs), hexabromocyclododecanes (HBCDDs), and tetrabromobisphenol A (TBBPA). The mean concentrations of Σ27 PBDEs, Σ3 HBCDDs, and TBBPA in soil were 222, 17.2, and 4.4 ng/g, respectively, but PBBs were not detected. Industrial sites had statistically higher BFR concentrations than suburban sites but no significant difference compared with urban sites. The commercial deca-BDE mixtures were the most likely source of PBDE contamination in the soil samples, with the minor influence of commercial penta-BDE and octa-BDE mixtures. The profiles of HBCDDs in most soil samples differed from those in the powder types of technical HBCDD mixtures, indicating that they are affected by the HBCDDs contained in commercial products and the conversion of HBCDD diastereoisomers (γ-HBCDD to α-HBCDD) in the environment. The concentrations of Σ27 PBDEs, Σ3 HBCDDs, and TBBPA were significantly correlated with population density, gross domestic product, and the number of companies (p < 0.01), indicating a direct impact of anthropogenic activities. Significant correlations among BFRs were determined (0.63 < r < 0.74, p < 0.01), suggesting that these pollutants had similar sources. Relatively good correlations (0.44 < r < 0.98, p < 0.01) between BDE-209 and other light BDEs (except for BDE-71, -77, -126, -156, and -205) might result from the degradation of heavy BDEs under anaerobic and natural sunlight conditions. To the best of our knowledge, this study provides the most comprehensive soil monitoring data for various BFRs in South Korea. Furthermore, it is the first report on soil contamination by deca-BDE, HBCDDs, and TBBPA in South Korea.
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Affiliation(s)
- Jin-Woo Jeon
- Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Chul-Su Kim
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Ho-Joong Kim
- Department of Chemical Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Chang-Ho Lee
- Department of Chemical Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Seung-Man Hwang
- Department of Chemical Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Sung-Deuk Choi
- Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea; UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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Kim HJ, Jeon JW, Hwang SM, Chu KI, Cha YH, Kwak YD, Kim YH, Choi SD, Aslam M, Kim CG. Long-term nationwide assessment of polychlorinated dibenzo-p-dioxins/dibenzofurans and dioxin-like polychlorinated biphenyls ambient air concentrations for ten years in South Korea. Chemosphere 2021; 263:127903. [PMID: 32841873 DOI: 10.1016/j.chemosphere.2020.127903] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/15/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
In this study, seasonal/regional variations of Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/DFs) and dioxin like-polychlorinated biphenyls in the ambient air were monitored for ten years (2008-2017) using a high volume air sampler. As a result of strict regulation enforced by Korea Ministry of Environment in 2008, PCDD/DFs concentrations in the ambient air decreased from 0.051 pg I-TEQ Sm-3 in 2009 to 0.014 pg I-TEQ Sm-3 in 2017 which was comparably associated with cut-down of their emission sources from 880.2 g I-TEQ Sm-3 in 2001 to 24.2 g I-TEQ Sm-3 in 2015; revealing that it was only 2.7% against that of 2001. In 2017, mean TEQ concentration level of PCDD/DFs in the air of South Korea was quite low in comparison to its ambient environmental standards of 0.6 pg I-TEQ Sm-3 for PCDD/DFs. Particularly, the sum of PCDD/DFs in the background revealed the lowest level, however, the fraction of octachlorodibenzodioxin among other isomers exposed at the highest level in this study, suggesting that the ambient air quality in the background being studied was severely and persistently impaired by inflowing unknown sources of any possible anthropogenic transboundary migratory air pollutants. Moreover, this study conducted the scientific analysis of the long-term variations in the ambient air and emission sources using principal component analysis. From this of 10 years long-term nationwide assessments for the PCDD/DFs and dl-PCBs in the ambient air, it is possible to prove that South Korean environmental policy to manage POPs has been successfully conducted for the last ten years.
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Affiliation(s)
- Ho-Joong Kim
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea; Department of Environment Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Jin-Woo Jeon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Seung-Man Hwang
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Kyung-Il Chu
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Yong-Ho Cha
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Young-Don Kwak
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Young-Hee Kim
- Chemicals Research Division, National Institute of Environmental Research (NIER), Incheon, 22689, Republic of Korea
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Muhammad Aslam
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
| | - Chang-Gyun Kim
- Department of Environment Engineering, Inha University, Incheon, 22212, Republic of Korea.
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Kim L, Jeon JW, Son JY, Kim CS, Ye J, Kim HJ, Lee CH, Hwang SM, Choi SD. Nationwide levels and distribution of endosulfan in air, soil, water, and sediment in South Korea. Environ Pollut 2020; 265:115035. [PMID: 32806455 DOI: 10.1016/j.envpol.2020.115035] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
We investigated the levels and distribution patterns of α- and β-endosulfan and endosulfan sulfate in air, soil, water, and sediment samples collected from the South Korean persistent organic pollutants (POPs) monitoring networks. In the air samples, the highest concentrations of the total (Σ3) endosulfan (50.3-611 pg/m3, mean: 274 pg/m3) were observed during summer. Spearman analysis revealed a good correlation between agricultural land area and atmospheric concentrations of Σ3 endosulfan except during winter. Regardless of the season, the ratio of the two isomers (α/β) was 3.6-4.9 in the air samples, higher than that observed in technical mixtures (2.0-2.3), possibly due to the higher volatility of α-endosulfan, compared to β-endosulfan. Concentrations of Σ3 endosulfan in the soil samples (n.d.-13.4 ng/g, mean: 0.8 ng/g) were not significantly different except at some stations adjacent to large areas of farmland. The average levels of Σ3 endosulfan in the water and sediment samples were 2.1 ng/L and 0.1 ng/g dw, respectively. In analyzing the four largest rivers, it was observed that a few water stations during spring and fall and sediment stations in fall had high concentrations of the two isomers and endosulfan sulfate, particularly around the Yeoungsan and Nakdong Rivers near large areas of agricultural land. Endosulfan sulfate was dominant at most water and sediment sampling stations. This study demonstrates that the endosulfan found in most environmental compartments most probably derives from agricultural areas despite its ban as a pesticide. On the other hand, given that it was also detected in industrial and urban areas, in which pesticide application does not occur, it can be conjectured that endosulfan is aerially transported at higher temperatures and continuously circulates within the environment.
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Affiliation(s)
- Leesun Kim
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jin-Woo Jeon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Ji-Young Son
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Chul-Su Kim
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jin Ye
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Ho-Joong Kim
- POPs Monitoring Division, Korea Environment Corporation, Incheon, 22689, Republic of Korea; Department of Environmental Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Chang-Ho Lee
- POPs Monitoring Division, Korea Environment Corporation, Incheon, 22689, Republic of Korea
| | - Seung-Man Hwang
- POPs Monitoring Division, Korea Environment Corporation, Incheon, 22689, Republic of Korea
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea; UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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Jeon JW, Kim CS, Kim L, Lee SE, Kim HJ, Lee CH, Choi SD. Distribution and diastereoisomeric profiles of hexabromocyclododecanes in air, water, soil, and sediment samples in South Korea: Application of an optimized analytical method. Ecotoxicol Environ Saf 2019; 181:321-329. [PMID: 31202932 DOI: 10.1016/j.ecoenv.2019.06.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
In this study, the levels and distribution patterns of HBCD diastereoisomers in air, water, soil, and sediment samples in South Korea were investigated after optimizing the UPLC-MS/MS analytical process. Extraction and cleanup efficiencies were tested using several different extraction solvents and adsorbents. Dichloromethane was selected as the base extraction solvent, and multi-layer silica gel (MSG) and MSG-alumina columns were selected for the removal of HBCDs from complex environmental matrices. The concentration of Ʃ3 HBCDs was 22-133 pg/m3, 10-128 ng/g, 0.2-151 ng/L, and 0.5-552 ng/g dw for air, soil, water, and sediment samples, respectively. Relatively higher concentrations of Ʃ3 HBCDs were observed at stations adjacent to industrial facilities (e.g., rubber and plastic, textile, chemical, fabricated metal, and wholesale trade factories) associated with the use of commercial HBCDs. The proportion of γ-HBCD in the soil (48.3-86.2%) and sediment (54.2-78.1%, except for one station) samples was similar to that found in technical and commercial HBCDs. In contrast, α-HBCD (52.3-71.2%) was dominant in all air samples, while the water samples displayed no clear trend in their diastereoisomer profiles. As the first nationwide report on HBCD diastereoisomers in the environment, this study demonstrates that most environmental compartments in South Korea are moderately contaminated with HBCDs.
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Affiliation(s)
- Jin-Woo Jeon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Chul-Su Kim
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Leesun Kim
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea; School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Sung-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Ho-Joong Kim
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea; Department of Environmental Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Chang-Ho Lee
- Department of Chemicals Management, Korea Environment Corporation (K-eco), Incheon, 22689, Republic of Korea
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea; UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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Cho IG, Park MK, Cho HK, Jeon JW, Lee SE, Choi SD. Characteristics of metal contamination in paddy soils from three industrial cities in South Korea. Environ Geochem Health 2019; 41:1895-1907. [PMID: 30673964 DOI: 10.1007/s10653-019-00246-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
Paddy soil contamination is directly linked to human dietary exposure to toxic chemicals via crop consumption. In Korea, rice paddy fields are often located around industrial complexes, a major anthropogenic source of metals. In this study, rice paddy soils were collected from 50 sites in three industrial cities to investigate the contamination characteristics and ecological risk of metals in the soils. The cities studied and their major industries are as follows: Ulsan (petrochemical, nonferrous, automobile, and shipbuilding), Pohang (iron and steel), and Gwangyang (iron and steel, nonmetallic, and petrochemical). Thirteen metals (Al, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn) were analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES). The mean concentration of Cd (1.98 mg/kg) exceeded the soil quality guideline of Canada (1.4 mg/kg), whereas concentrations of other metals were under the standards of both Korea and Canada. Generally, levels of metal concentrations decreased with increasing distance from industrial complexes. Among the three cities, Pohang showed high concentrations of Zn (142.2 mg/kg), and Ulsan and Gwangyang showed high concentrations of Cr (33.9 mg/kg) and Ba (126.4 mg/kg), respectively. These contamination patterns were influenced by the different major industries of each city, which was clearly demonstrated by the principal component analysis results. Pollution indices suggested that As, Cd, Pb, and Zn were enriched in the paddy soils via anthropogenic activities. Comprehensive potential ecological risk indices were at considerable levels for most sites, especially because of major contributions from As and Cd, which can pose potential ecological threats.
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Affiliation(s)
- In-Gyu Cho
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Min-Kyu Park
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hye-Kyung Cho
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jin-Woo Jeon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Sung-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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Jeon JW, Lee DH, Won YS, Lee MG. Characteristics of photocatalytic decomposition of individual and binary mixture vapors of some VOCs by a cylindrical UV reactor with helically installed TiO2-coated perforated planes. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-017-0320-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kim L, Jeon JW, Son JY, Park MK, Kim CS, Jeon HJ, Nam TH, Kim K, Park BJ, Choi SD, Lee SE. Monitoring and risk assessment of polychlorinated biphenyls (PCBs) in agricultural soil from two industrialized areas. Environ Geochem Health 2017; 39:279-291. [PMID: 28197871 DOI: 10.1007/s10653-017-9920-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
For monitoring and risk assessment, levels and distributions of Σ29 PCBs in paddy soil samples collected from Gwangyang (10 sites) and Ulsan (20 sites), heavily industrialized cities in Korea, were investigated using high-resolution gas chromatography/high-resolution mass spectrometry. Overall, total concentrations of Σ29 PCBs in Gwangyang (216.4-978.6 pg g-1 dw) and Ulsan (273.8-1824.1 pg g-1 dw) were higher than those (106.6-222.6 pg g-1 dw) in agricultural soil from Anseong in Korea. The TEQ (toxic equivalency) values from Gwangyang (0.06-0.40 ng TEQ kg-1 dw) and Ulsan (0.06-0.22 ng TEQ kg-1 dw) were higher than those (0.04-0.11 ng TEQ kg-1 dw) in Anseong but lower than the WHO threshold level (20 ng TEQ kg-1). However, one of the most toxic congeners, PCB 126, gave the highest concentration, possibly posing a risk to the biota. Seven indicator PCB congeners contributed to 50-80% of the total concentration of Σ29 PCBs, indicating the 7 PCBs can be used as valuable indicators for monitoring. The principal component analysis and cluster analysis for the homologue profiles of PCBs indicated that all the samples from both cities had the similar PCB contamination patterns, and the major sources of the PCB contamination were most likely from the usage of Aroclor 1254 than those of Aroclors 1242 and 1260. These PCB technical mixtures were possibly significantly used by various industries including iron and steel industries in Gwangyang and petrochemical and shipbuilding industries in Ulsan.
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Affiliation(s)
- Leesun Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jin-Woo Jeon
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Ji-Young Son
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Min-Kyu Park
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Chul-Su Kim
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Hwang-Ju Jeon
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Tae-Hoon Nam
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kyeongsoon Kim
- Department of Pharmaceutical Engineering, Inje University, Gimhae, 50834, Republic of Korea
| | - Byung-Jun Park
- Chemical Safety Division, National Academy of Agricultural Science, Rural Development Administration, Jeonju, 54875, Republic of Korea
| | - Sung-Deuk Choi
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
- UNIST Environmental Analysis Center, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Sung-Eun Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
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Won YS, Jeon JW, Lee DH, Lee MG. Photocatalytic Decomposition of Toluene by a Cylindrical UV Reactor with Helically Installed TiO 2-Coated Perforated Planes. J Chem Eng Japan / JCEJ 2017. [DOI: 10.1252/jcej.16we249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yong Sun Won
- Department of Chemical Engineering, Pukyong National University
| | - Jin-Woo Jeon
- Department of Chemical Engineering, Pukyong National University
| | | | - Min-Gyu Lee
- Department of Chemical Engineering, Pukyong National University
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Lim GS, Seo SM, Paek SH, Kim SW, Jeon JW, Kim DH, Cho IH, Paek SH. Chemiluminometric Immunosensor for High-Sensitivity Cardiac Troponin I Employing a Polymerized Enzyme Conjugate as a Tracer. Sci Rep 2015; 5:14848. [PMID: 26442606 PMCID: PMC4595837 DOI: 10.1038/srep14848] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/07/2015] [Indexed: 01/15/2023] Open
Abstract
To detect high-sensitivity cardiac troponin I (hs-cTnI; <0.01 ng/mL) at points of care, we developed a rapid immunosensor by using horseradish peroxidase polymerized in 20 molecules on average (Poly-HRP) as a tracer conjugated with streptavidin (SA-Poly-HRP). As shown in the conventional system, enhanced sensitivity could be achieved by using a sequential binding scheme for the complex formation to contain the huge molecular tracer. We used a 2-dimensional chromatographic technology to carry out the sequential bindings in cross-flow directions. After the complex formation of antigen-antibody with analyte in a vertical direction, SA-Poly-HRP was horizontally supplied across the membrane strip for additional binding via a biotin-SA linkage. The HRP substrate was subsequently supplied along the same direction to produce a chemiluminometric signal, which was measured by a cooled charge-coupled device. Hs-cTnI analysis was completed in this format within 25 min, and the results showed a high correlation with those of the CentaurXP® reference system (R2 > 0.99). The detection limit of the rapid immunosensor was 0.003 ± 0.001 ng/mL cTnI, corresponding to a 10-fold improvement compared to results using the plain enzyme tracer. This demonstrated the measurement of hs-cTnI in a much more cost-effective manner compared to the automated versions currently available.
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Affiliation(s)
- Guei-Sam Lim
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea.,Devices and Materials Laboratory, LG Electronics Advanced Research Institute, Seocho-gu, Seoul 137-724, Korea
| | - Sung-Min Seo
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea
| | - Sung-Ho Paek
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea
| | - Seung-Wan Kim
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea
| | - Jin-Woo Jeon
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea
| | - Dong-Hyung Kim
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea
| | - Il-Hoon Cho
- Department of Biomedical Laboratory Science, Eulji University, Seongnam, Gyeonggi-do 461-713, Korea
| | - Se-Hwan Paek
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Korea.,Department of Biotechnology and Bioinformatics, Korea University, Sejong 339-700, Korea
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Abstract
An immune system-mimicking real-time biosensing could detect bacteria (<100 CFU mL−1) automatically within the working time.
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Affiliation(s)
- Sung-Min Seo
- Department of Bio-Microsystem Technology
- Korea University
- Seoul 136-701
- Korea
| | - Jin-Woo Jeon
- Department of Bio-Microsystem Technology
- Korea University
- Seoul 136-701
- Korea
| | - Tae-Yong Kim
- Department of Bio-Microsystem Technology
- Korea University
- Seoul 136-701
- Korea
| | - Se-Hwan Paek
- Department of Bio-Microsystem Technology
- Korea University
- Seoul 136-701
- Korea
- Department of Biotechnology and Bioinformatics
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Cho JH, Kim MH, Mok RS, Jeon JW, Lim GS, Chai CY, Paek SH. Two-dimensional paper chromatography-based fluorescent immunosensor for detecting acute myocardial infarction markers. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 967:139-46. [DOI: 10.1016/j.jchromb.2014.07.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/15/2014] [Accepted: 07/17/2014] [Indexed: 10/25/2022]
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Jeon JW, Ha UH, Paek SH. In vitro inflammation inhibition model based on semi-continuous toll-like receptor biosensing. PLoS One 2014; 9:e105212. [PMID: 25136864 PMCID: PMC4138127 DOI: 10.1371/journal.pone.0105212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 04/01/2014] [Accepted: 07/20/2014] [Indexed: 12/26/2022] Open
Abstract
A chemical inhibition model of inflammation is proposed by semi-continuous monitoring the density of toll-like receptor 1 (TLR1) expressed on mammalian cells following bacterial infection to investigate an in vivo-mimicked drug screening system. The inflammation was induced by adding bacterial lysate (e.g., Pseudomonas aeruginosa) to a mammalian cell culture (e.g., A549 cell line). The TLR1 density on the same cells was immunochemically monitored up to three cycles under optimized cyclic bacterial stimulation-and-restoration conditions. The assay was carried out by adopting a cell-compatible immunoanalytical procedure and signal generation method. Signal intensity relative to the background control obtained without stimulation was employed to plot the standard curve for inflammation. To suppress the inflammatory response, sodium salicylate, which inhibits nuclear factor-κB activity, was used to prepare the standard curve for anti-inflammation. Such measurement of differential TLR densities was used as a biosensing approach discriminating the anti-inflammatory substance from the non-effector, which was simulated by using caffeic acid phenethyl ester and acetaminophen as the two components, respectively. As the same cells exposed to repetitive bacterial stimulation were semi-continuously monitored, the efficacy and toxicity of the inhibitors may further be determined regarding persistency against time. Therefore, this semi-continuous biosensing model could be appropriate as a substitute for animal-based experimentation during drug screening prior to pre-clinical tests.
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Affiliation(s)
- Jin-Woo Jeon
- Department of Bio-Microsystem Technology, Korea University, Anam-dong, Seongbuk-Gu, Seoul, Korea
| | - Un-Hwan Ha
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-ro, Sejong, Korea
| | - Se-Hwan Paek
- Department of Bio-Microsystem Technology, Korea University, Anam-dong, Seongbuk-Gu, Seoul, Korea
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-ro, Sejong, Korea
- * E-mail:
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Cho IH, Jeon JW, Paek SH, Kim DH, Shin HS, Ha UH, Seo SK, Paek SH. Toll-Like Receptor-Based Immuno-Analysis of Pathogenic Microorganisms. Anal Chem 2012; 84:9713-20. [DOI: 10.1021/ac300668y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Il-Hoon Cho
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Jin-Woo Jeon
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Sung-Ho Paek
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Dong-Hyung Kim
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
| | - Hee-Sung Shin
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
| | - Un-Hwan Ha
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
| | - Sung-Kyu Seo
- Department of Electronics and
Information Engineering, Korea University, Jochiwon, Chungnam 339-700, Korea
| | - Se-Hwan Paek
- Program for Bio-Microsystem Technology, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701,
Korea
- Department of Biotechnology
and Bioinformatics, Korea University, 2511
Sejong-ro, Sejong 339-700, Korea
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Kim DH, Paek SH, Lim GS, Jeon JW, Paek SH. Performance characteristics of monoclonal antibodies as recyclable binders to cardiac troponin I. Anal Biochem 2012; 431:11-8. [PMID: 22967675 DOI: 10.1016/j.ab.2012.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 08/26/2012] [Accepted: 09/03/2012] [Indexed: 10/27/2022]
Abstract
Acute myocardial infarction is a typical disorder that requires continuous monitoring for early detection of potential life-threatening situations. To this end, we used different methods to screen for rapidly reversible antibodies, among 22 hybridoma clones, against cardiac troponin I (cTnI), which is a specific marker indicating the disease. The dissociation rates of antibodies were underestimated by up to a factor of 1000 because of bivalent binding when tested with the antigen immobilized on solid surfaces. This effect was also observed in a sandwich immunoassay, in which the detection antibody cross-linked with various antigen molecules already bound to the capture antibody. Although multiple binding events contributed to enhanced detection capability, it was difficult to recycle the immunosensor. We then devised a screening system by arranging the test antibody for the capture binder immobilized on a label-free sensor. This enabled us to select fast reactive antibodies of which one (clone 24) was shown to be recyclable, even in serum-containing medium. Using this antibody, repetitive detection of cTnI with a rapid response time (half-life of dissociation: about 4min on average) and high detection capability (0.1ng/ml) was achieved, which is very important for detection in a clinical setting.
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Affiliation(s)
- Dong-Hyung Kim
- Department of Bio-Microsystem Technology, Korea University, Sungbuk-gu, Seoul 136-701, Republic of Korea
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Seo SM, Cho IH, Jeon JW, Cho HK, Oh EG, Yu HS, Shin SB, Lee HJ, Paek SH. An ELISA-on-a-chip biosensor system coupled with immunomagnetic separation for the detection of Vibrio parahaemolyticus within a single working day. J Food Prot 2010; 73:1466-73. [PMID: 20819356 DOI: 10.4315/0362-028x-73.8.1466] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this study, we constructed a rapid detection system for a foodborne pathogen, Vibrio parahaemolyticus, by using enzyme-linked immunosorbent assay (ELISA)-on-a-chip (EOC) biosensor technology to minimize the risk of infection by the microorganism. The EOC results showed a detection capability of approximately 6.2x10(5) cells per ml, which was significantly higher than that of the conventional rapid test kit. However, this high level of sensitivity required cultivation of the pathogen prior to analysis, which typically exceeded a day. To shorten the test period, we combined the EOC technology with immunomagnetic separation (IMS), which could enhance the sensitivity of the biosensor. IMS was carried out with magnetic particles coated with a monoclonal antibody specific to the microbe. To test the performance of the IMS-EOC method, fish intestine samples were prepared by artificially inoculating less than 1 or 5 CFU/10 g, allowing for enrichment over predetermined times, and analyzing the sample by using the EOC sensor after concentrating the culture 86-fold via IMS. Using this approach, the bacterium was detected after (at most) 9 h, which approximately corresponds to standard working hours. Thus, the IMS-EOC method allowed for the rapid detection of V. parahaemolyticus, which is responsible for foodborne diseases, and this method could be used for early isolation of contaminated foods before distribution.
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Affiliation(s)
- Sung-Min Seo
- Program for Bio-Microsystem Technology, Korea University, 1, 5-ka, Anam-dong, Seongbuk-Gu, Seoul 136-701, Republic of Korea
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Seo SM, Cho IH, Kim JH, Jeon JW, Oh EG, Yu HS, Shin SB, Lee HJ, Paek SH. An ELISA-on-a-Chip Biosensor System for Early Screening of Listeria monocytogenes in Contaminated Food Products. B KOREAN CHEM SOC 2009. [DOI: 10.5012/bkcs.2009.30.12.2993] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Park JY, Koo DH, Hong CP, Lee SJ, Jeon JW, Lee SH, Yun PY, Park BS, Kim HR, Bang JW, Plaha P, Bancroft I, Lim YP. Physical mapping and microsynteny of Brassica rapa ssp. pekinensis genome corresponding to a 222 kbp gene-rich region of Arabidopsis chromosome 4 and partially duplicated on chromosome 5. Mol Genet Genomics 2005; 274:579-88. [PMID: 16283385 DOI: 10.1007/s00438-005-0041-4] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [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: 01/07/2005] [Accepted: 08/05/2005] [Indexed: 11/28/2022]
Abstract
We constructed a bacterial artificial chromosome (BAC) library, designated as KBrH, from high molecular weight genomic DNA of Brassica rapa ssp. pekinensis (Chinese cabbage). This library, which was constructed using HindIII-cleaved genomic DNA, consists of 56,592 clones with average insert size of 115 kbp. Using a partially duplicated DNA sequence of Arabidopsis, represented by 19 and 9 predicted genes on chromosome 4 and 5, respectively, and BAC clones from the KBrH library, we studied conservation and microsynteny corresponding to the Arabidopsis regions in B. rapa ssp. pekinensis. The BAC contigs assembled according to the Arabidopsis homoeologues revealed triplication and rearrangements in the Chinese cabbage. In general, collinearity of genes in the paralogous segments was maintained, but gene contents were highly variable with interstitial losses. We also used representative BAC clones, from the assembled contigs, as probes and hybridized them on mitotic (metaphase) and/or meiotic (leptotene/pachytene/metaphase I) chromosomes of Chinese cabbage using bicolor fluorescence in situ hybridization. The hybridization pattern physically identified the paralogous segments of the Arabidopsis homoeologues on B. rapa ssp. pekinensis chromosomes. The homoeologous segments corresponding to chromosome 4 of Arabidopsis were located on chromosomes 2, 8 and 7, whereas those of chromosome 5 were present on chromosomes 6, 1 and 4 of B. rapa ssp. pekinensis.
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Affiliation(s)
- J Y Park
- Department of Horticulture, Chungnam National University, Kung-Dong 220, Yusong-Gu, Daejeon 305-764, South Korea
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Cho SY, Jeon JW, Lee SH, Park SS. p67 isoform of mouse disabled 2 protein acts as a transcriptional activator during the differentiation of F9 cells. Biochem J 2000; 352 Pt 3:645-50. [PMID: 11104669 PMCID: PMC1221500] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The mouse disabled 2 (mDab2) gene is a mouse homologue of the Drosophila disabled gene and is alternatively spliced to form two isoforms, p96 and p67. Although p96 has been known to regulate the Ras-Sos G-protein signal transduction pathway by interacting with Grb2, little is known about the biological function of p67. Recent studies have shown that the expression of mDab2 is markedly up-regulated during the retinoic acid (RA)-induced differentiation of F9 cells, suggesting another role for mDab2 in cell differentiation [Cho, Lee and Park (1999) Mol. Cells 9, 179-184). In the present study, we first elucidated the biological function of p67 isoform of mDab2 and identified its binding partner. Unlike p96, p67 largely resides in RA-treated F9 cell nuclei. In this system, p67 interacts with mouse androgen-receptor interacting protein 3, termed the mDab2 interacting protein, which acts as a transcriptional co-regulator. By using a fusion protein with a heterologous DNA-binding domain (GAL4), we showed that p67 had an intrinsic transcriptional activation function. These results suggest that mDab2 p67 may function as a transcriptional co-factor for certain complexes of transcriptional regulatory elements involved in the RA-induced differentiation of F9 cells.
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Affiliation(s)
- S Y Cho
- Graduate School of Biotechnology, Korea University, 1, 5-ka, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea
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Lee NS, Cha SW, Hong SJ, Shin WY, Lee GT, Jeon JW, Won JH, Baick SH, Hong DS, Park HS. A case of lymphomatoid papulosis occurred simultaneously with Ki-1-positive anaplastic large cell lymphoma. Korean J Intern Med 1997; 12:84-8. [PMID: 9159045 PMCID: PMC4531975 DOI: 10.3904/kjim.1997.12.1.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Lymphomatoid papulosis (LyP) is a chronic self-healing skin eruption that is clinically benign but histologically mimics a malignant lymphoma. However, lymphomatoid papulosis with anaplastic large cell lymphoma responds poorly to medical treatments, including chemotherapies. We experienced a 60-year-old male patient with lymphomatoid papulosis occurred simultaneously with relapsed Ki-1-positive anaplastic large cell lymphoma who was treated with salvage chemotherapy but, unfortunately, failed to be rescued. We report it with a review of the literature.
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Affiliation(s)
- N S Lee
- Department of Internal Medicine, Soonchunhyang University, College of Medicine, Seoul, Korea
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Park CS, Jeon JW, Park SW, Lim GI, Jeong SH, Uh ST, Park JS, Choi DL, Jin SY, Kang CH. Nonspecific interstitial pneumonia/fibrosis: clinical manifestations, histologic and radiologic features. Korean J Intern Med 1996; 11:122-32. [PMID: 8854648 PMCID: PMC4532011 DOI: 10.3904/kjim.1996.11.2.122] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES Customarily used classification of IPF did not satisfy a sizable group of patients with IPF that in the past had been lumped with UIP and now currently has begun to be recognized as nonspecific interstitial pneumonia/fibrosis (NIP). There are few reports about the clinical features of NIP. METHODS The pathologic slides of 66 patients having open lung biopsy (OLB) for the differential diagnosis of interstitial lung diseases (ILD) from 1984 to 1995 were reviewed. Seven cases were confirmed as NIP. The clinical record, pulmonary function tests (PFT), chest PA and HRCT were reviewed and analysed retrospectively. RESULTS Six patients with NIP were female. The median age was 56 years. Mean duration of symptoms was 4 months. Five patients had systemic flu-like symptoms, the most common respiratory symptom was gradual dyspnea. Two patients revealed a mild degree of anemia. Four cases had leukocytois of more than 10,000/mm3. ESR and CRP O.K. elevated in all measured cases. Anti-nuclear antibody (ANA) was positive in three of six patients and ds-DNA antibody was positive in one of six patients. Restrictive pattern of PFT was predominant. Diffusion capacity of carbon monoxide (DLCO) decreased markedly. In bronchoalveolar lavage (BAL), total cell counts elevated about three times of normal value. On differential counts of BAL cells, lymphocytes, neutrophils and eosinophils were higher than those of normal controls. The prominent finding of chest radiology was bilaterally patchy opacifications in parenchyme of lower lung zones. On HRCT, bilaterally patchy areas of ground-glass attenuation and/or areas of alveolar consolidation were commonly shown. The number of pathologic type was one case of group I, four cases of group II and two cases of group III. The average period from diagnosis to the last follow-up was 24.8 months. Five patients were clinically recovered to the previously well-being state. CONCLUSION Patients with NIP had different clinical features from UIP, AIP and DIP. They also had characteristic findings of radiology and their prognosis seems to be better than UIP.
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Affiliation(s)
- C S Park
- Department of Internal Medicine, Soon Chun Hyang University Hospital, Seoul, Korea
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Abstract
Granulocytic sarcoma is rare extramedullary tumor composed of myeloblasts and other granulocytic precursors. The majority of cases have been reported in association with acute myeloid leukemia (AML) or myeloproliferative disorders. Granulocytic sarcoma may occur in patients with myelodysplastic syndromes. Reports are very rare, especially in the brain. We report an unusual case of granulocytic sarcoma of the parenchyma of the brain, occurring in a patient with myelodysplastic syndrome, diagnosed by cerebro-spinal fluid cytology and magnetic resonance imaging brain scan.
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Affiliation(s)
- H S Lee
- Department of Internal Medicine, Soonchunhyang University, Seoul, Korea
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