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Mok JS, Cho SR, Park YJ, Jo MR, Ha KS, Kim PH, Kim MJ. Distribution and antimicrobial resistance of Vibrio parahaemolyticus isolated from fish and shrimp aquaculture farms along the Korean coast. Mar Pollut Bull 2021; 171:112785. [PMID: 34340145 DOI: 10.1016/j.marpolbul.2021.112785] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 10/16/2019] [Revised: 06/05/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
The present study investigated the distribution and antimicrobial susceptibility patterns of Vibrio parahaemolyticus in water samples and aquatic animals (fish and shrimp) from major aquaculture farms along the Korean coast in 2018. V. parahaemolyticus is the most common pathogen causing seafood-borne illness. The strain was detected in 34.7% of all samples tested, and was detected at higher levels during summer to autumn when the water temperature is higher. Although more than 90.0% of V. parahaemolyticus isolates were sensitive to 13 of the 15 antimicrobials tested, which is useful for treating V. parahaemolyticus infectious disease, the isolates exhibited higher resistance to two antibiotics (colistin and ampicillin), which should be excluded as treatment options for these infections. Koreans typically enjoy consuming raw seafood. To reduce the potential human health risk of raw seafood consumption, the prevalence and antimicrobial resistance of V. parahaemolyticus in aquaculture environments should be continuously valuated.
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Affiliation(s)
- Jong Soo Mok
- South Sea Fisheries Research Institute, National Institute of Fisheries Science, Yeosu 59780, Republic of Korea.
| | - Sung Rae Cho
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Yu Jeong Park
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Mi Ra Jo
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Kwang Soo Ha
- Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science, Tongyeong 53085, Republic of Korea
| | - Poong Ho Kim
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Min Ju Kim
- West Sea Fisheries Research Institute, National Institute of Fisheries Science, Incheon 22383, Republic of Korea
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Yoon JH, Lee N, Youn K, Jo MR, Kim HR, Lee DS, Ho CT, Jun M. Dieckol Ameliorates Aβ Production via PI3K/Akt/GSK-3β Regulated APP Processing in SweAPP N2a Cell. Mar Drugs 2021; 19:md19030152. [PMID: 33804171 PMCID: PMC8001366 DOI: 10.3390/md19030152] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/06/2021] [Accepted: 03/11/2021] [Indexed: 02/07/2023] Open
Abstract
The proteolytic processing of amyloid precursor protein (APP) by β-secretase (BACE1) and γ-secretase releases amyloid-β peptide (Aβ), which deposits in amyloid plaques and contributes to the initial causative events of Alzheimer’s disease (AD). In the present study, the regulatory mechanism of APP processing of three phlorotannins was elucidated in Swedish mutant APP overexpressed N2a (SweAPP N2a) cells. Among the tested compounds, dieckol exhibited the highest inhibitory effect on both intra- and extracellular Aβ accumulation. In addition, dieckol regulated the APP processing enzymes, such as α-secretase (ADAM10), β-secretase, and γ-secretase, presenilin-1 (PS1), and their proteolytic products, sAPPα and sAPPβ, implying that the compound acts on both the amyloidogenic and non-amyloidogenic pathways. In addition, dieckol increased the phosphorylation of protein kinase B (Akt) at Ser473 and GSK-3β at Ser9, suggesting dieckol induced the activation of Akt, which phosphorylated GSK-3β. The specific phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002 triggered GSK-3β activation and Aβ expression. In addition, co-treatment with LY294002 noticeably blocked the effect of dieckol on Aβ production, demonstrating that dieckol promoted the PI3K/Akt signaling pathway, which in turn inactivated GSK-3β, resulting in the reduction in Aβ levels.
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Affiliation(s)
- Jeong-Hyun Yoon
- Department of Health Sciences, The graduate School of Dong-A University, Busan 49315, Korea; (J.-H.Y.); (N.L.)
| | - Nayoung Lee
- Department of Health Sciences, The graduate School of Dong-A University, Busan 49315, Korea; (J.-H.Y.); (N.L.)
| | - Kumju Youn
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Korea;
| | - Mi Ra Jo
- Division of Food Safety and Processing Research, National Institute of Fisheries Science, Busan 46083, Korea;
| | - Hyeung-Rak Kim
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Korea;
| | - Dong-Seok Lee
- School of Life Sciences & Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Korea;
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, NJ 08901, USA;
| | - Mira Jun
- Department of Health Sciences, The graduate School of Dong-A University, Busan 49315, Korea; (J.-H.Y.); (N.L.)
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Korea;
- Correspondence: ; Tel.: +82-51-200-7323
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Yoon M, Jo MR, Kim PH, Choi WS, Kang SI, Choi SG, Lee JH, Lee HC, Son KT, Mok JS. Total and Methyl Mercury Concentrations in Antarctic Toothfish (Dissostichus mawsoni): Health Risk Assessment. Bull Environ Contam Toxicol 2018; 100:748-753. [PMID: 29564485 DOI: 10.1007/s00128-018-2326-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
The concentrations of total mercury (THg) in different organs of the Antarctic toothfish (Dissostichus mawsoni) collected from CCAMLR research blocks in Subarea 88.3 and Division 58.4.1 off the coast of Antarctica were determined. The results revealed THg concentrations of 0.165 ± 0.095 mg/kg (0.023-0.454 mg/kg, wet weight) in the Antarctic toothfish. In muscle, methyl mercury (MeHg) accounted for approximately 40% of the THg. In a comparison analysis, muscle and liver tended to bioaccumulate the highest levels of THg, and both THg and MeHg contents showed correlations with fish length and weight. Compared with international guidelines, fish contained 2.5-6.4% and 4.0-10.3% of the provisional tolerable weekly intake for THg recommended by the Joint FAO/WHO Expert Committee on Food Additives and the tolerable weekly intake for MeHg proposed by the European Food Safety Authority, respectively. These results suggest that consumption of the Antarctic toothfish presents no health risk to humans.
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Affiliation(s)
- Minchul Yoon
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Mi Ra Jo
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Poong Ho Kim
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Woo Seok Choi
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Sang In Kang
- Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University, Tongyeong, 53063, Republic of Korea
| | - Seok Gwan Choi
- Distant-Water Fisheries Resources Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jong Hee Lee
- Distant-Water Fisheries Resources Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Chung Lee
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Kwang Tae Son
- South-East Sea Fisheries Research Institute, National Institute of Fisheries Science, Tongyeong, 53085, Republic of Korea
| | - Jong Soo Mok
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Mok JS, Kwon JY, Son KT, Choi WS, Kang SR, Ha NY, Jo MR, Kim JH. Contents and risk assessment of heavy metals in marine invertebrates from Korean coastal fish markets. J Food Prot 2014; 77:1022-30. [PMID: 24853529 DOI: 10.4315/0362-028x.jfp-13-485] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [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
The concentrations of the heavy metals cadmium (Cd), mercury (Hg), lead (Pb), chromium, silver, nickel, copper, and zinc in the edible portions of 105 marine invertebrates representing 16 mollusk and crustacean species were accurately determined to evaluate their hazard for human consumption. The samples were collected in 2011 from major fish markets on the coast of Korea and analyzed for Hg using a direct Hg analyzer and for other metals using inductively coupled plasma mass spectrometry. Estimated dietary exposure (EDE) was determined, and a risk assessment was made of the heavy metals to provide information concerning consumer safety. The Cd concentrations, which were the highest for the three hazardous metals (Cd, Hg, and Pb), were significantly higher (P < 0.05) in the bivalves and crabs than in the gastropods and cephalopods. However, the concentrations of these metals in all samples were within the regulatory limits set by Korea and other countries. The EDE was compared with the provisional tolerable daily intake (PTDI) adopted by the Joint FAO/WHO Expert Committee on Food Additives or the U.S. Environmental Protection Agency. The EDE of Cd, Hg, and Pb for each class of marine invertebrate were 0.07 to 2.64, 0.01 to 0.43, and 0.001 to 0.16% of the PTDI, respectively. The total EDE of Cd, Hg, and Pb for marine invertebrates accounted for 4.03, 0.96, and 0.21%, respectively, of the PTDI. The EDE of other metals in each class of marine invertebrate was less than 2% of the PTDI. The hazard index is a reasonable parameter for assessing the risk of heavy metal consumption associated with contaminated food. In the present study, the hazard index for all of the species was less than 1.0, which indicates that the intake of heavy metals from consumption of these marine invertebrates does not represent an appreciable hazard to humans.
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Affiliation(s)
- Jong Soo Mok
- Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute, 361 Youngun-ri, Sanyang-up, Tongyoung 650-943, Korea
| | - Ji Young Kwon
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Kwang Tae Son
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Woo Seok Choi
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Sung Rim Kang
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Na Young Ha
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Mi Ra Jo
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea
| | - Ji Hoe Kim
- Food Safety Research Division, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 619-705, Korea.
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Jo MR, Lee HJ, Lee TS, Park K, Oh EG, Kim PH, Lee DS, Horie M. Simultaneous determination of macrolide residues in fish and shrimp by liquid chromatography-tandem mass spectrometry. Food Sci Biotechnol 2011. [DOI: 10.1007/s10068-011-0114-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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