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Ryu YK, Lee WK, Choi WY, Kim T, Lee YJ, Park A, Kim T, Oh C, Heo SJ, Kim JH, Jeon GE, Kang DH. A novel drying film culture method applying a natural phenomenon: Increased carotenoid production by Haematococcus sp. Bioresour Technol 2023; 390:129827. [PMID: 37802367 DOI: 10.1016/j.biortech.2023.129827] [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] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/03/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
Low productivity and high cost remain major bottlenecks for the large-scale production of Haematococcus sp. This study explored biomass production and carotenoid accumulation in Haematococcus sp. (KCTC 12348BP) using drying film culture. The broth-cultured strain (3.2 × 106 cells/mL, 0.83 ± 0.02 mg/mL for a 21 d culture) was cultured under various conditions (different inoculum volumes and mist feeding intervals) in waterless agar plates at 28 ± 0.5 °C, under fluorescent light (12 h light-dark cycle) for 1 month. The maximum biomass obtained was 17.60 ± 0.72 g/m2, while the maximum astaxanthin concentration was 8.23 ± 1.13 mg/g in the culture using 1 mL inoculum and 3 d feeding interval. Drought stress in drying film culture effectively induced the accumulation of carotenoids from β-carotene, facilitating the production of canthaxanthin via the astaxanthin biosynthesis pathway. This cost-effective culture system can increase the biomass and carotenoid pigment production in Haematococcus sp.
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Affiliation(s)
- Yong-Kyun Ryu
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea; Department of Marine Technology & Convergence Engineering (Marine Biotechnology), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Won-Kyu Lee
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea; Department of Marine Technology & Convergence Engineering (Marine Biotechnology), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Woon-Yong Choi
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea
| | - Taihun Kim
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea
| | - Yeon-Ji Lee
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea
| | - Areumi Park
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea
| | - Taeho Kim
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea
| | - Chulhong Oh
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea; Department of Marine Technology & Convergence Engineering (Marine Biotechnology), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Soo-Jin Heo
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Republic of Korea; Department of Marine Technology & Convergence Engineering (Marine Biotechnology), KIOST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Ji Hyung Kim
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Ga Eun Jeon
- Marine Environment Impact Assessment Center, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Do-Hyung Kang
- Office of the President, Korea Institute of Ocean Science and Technology (KIOST), Busan 49111, Republic of Korea.
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Lee WK, Ryu YK, Kim T, Park A, Lee YJ, Sunwoo IY, Koh EJ, Oh C, Choi WY, Kang DH. Enhanced Photosynthetic Pigment Production Using a Scaled-Up Continuously Circulated Bioreactor. Mar Drugs 2023; 21:576. [PMID: 37999400 PMCID: PMC10672258 DOI: 10.3390/md21110576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/25/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023] Open
Abstract
Microalgae have gained attention as a promising source of chlorophylls and carotenoids in various industries. However, scaling up of conventional bubble columns presents challenges related to cell sedimentation and the presence of non-photosynthetic cells due to non-circulating zones and decreased light accessibility, respectively. Therefore, this study aimed to evaluate the newly developed continuously circulated bioreactor ROSEMAX at both laboratory and pilot scales, compared to a conventional bubble column. There was no significant difference in the biomass production and photosynthetic pigment content of Tetraselmis sp. cultivated at the laboratory scale (p > 0.05). However, at the pilot scale, the biomass cultured in ROSEMAX showed significantly high biomass (1.69 ± 0.11 g/L, dry weight, DW), chlorophyll-a (14.60 ± 0.76 mg/g, DW), and total carotene (5.64 ± 0.81 mg/g, DW) concentrations compared to the conventional bubble column (1.17 ± 0.11 g/L, DW, 10.67 ± 0.72 mg/g, DW, 3.21 ± 0.56 mg/g, DW, respectively) (p ≤ 0.05). Flow cytometric analyses confirmed that the proportion of Tetraselmis sp. live cells in the culture medium of ROSEMAX was 32.90% higher than that in the conventional bubble column, with a photosynthetic efficiency 1.14 times higher. These results support suggestions to use ROSEMAX as a bioreactor for industrial-scale applications.
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Affiliation(s)
- Won-Kyu Lee
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
- Department of Marine Biotechnology, KIOST School, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Yong-Kyun Ryu
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
- Department of Marine Biotechnology, KIOST School, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Taeho Kim
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
| | - Areumi Park
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
| | - Yeon-Ji Lee
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
| | - In Yung Sunwoo
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
| | - Eun-Jeong Koh
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
| | - Chulhong Oh
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
- Department of Marine Biotechnology, KIOST School, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Woon-Yong Choi
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
- Department of Marine Biotechnology, KIOST School, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Do-Hyung Kang
- Jeju Bio Research Center, Korea Institute of Ocean Science and Technology (KIOST), 2670 Iljudong-ro, Gujwa-eup, Jeju-si 63349, Republic of Korea; (W.-K.L.); (Y.-K.R.); (T.K.); (A.P.); (Y.-J.L.); (I.Y.S.); (E.-J.K.); (C.O.); (W.-Y.C.)
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Kim HJ, Kim NN, Han J, Park HS, Kang DH, Choi YU. Reproductive condition of the black-lip pearl oyster Pinctada margaritifera during the lunar phase. J Exp Zool A Ecol Integr Physiol 2023; 339:302-309. [PMID: 36650734 DOI: 10.1002/jez.2679] [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] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/19/2023]
Abstract
This study analyzed the relationship between the lunar phase and the reproductive cycle of Pinctada margaritifera inhabiting Weno Island, Chuuk Lagoon, Micronesia. We measured indicators of maturity (gonadosomatic index [GSI] and sexual maturation-related genes) and investigated changes in the gonadal maturity stages (GMS) of P. margaritifera over lunar cycle. GSI was higher around the full moon. GMS of P. margaritifera were classified as the early gametogenesis stage, ripe and spawning stage, and spent and degenerating stage. A large percentage of oysters was observed in the ripe and spawning stage at the first quarter moon in female and the full moon in male as well as in the spent and degenerating stages at the third quarter moon in both sexes. In addition, the expression of doublesex- and mab-3-related transcription factor 2 (DMRT2) in the male P. margaritifera black-lip pearl oyster was the highest during the full and third quarter moon phases, whereas no difference in expression was observed with the lunar phase in females. In contrast, the expression of vitellogenin (VTG) was the highest in female P. margaritifera during the first and third quarters. No difference in expression was observed according to the lunar phase in males. The results suggest that the lunar phase directly affects the expression of sexually mature gonads in P. margaritifera black-lip pearl oyster.
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Affiliation(s)
- Han-Jun Kim
- Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology (KIOST), Busan, Republic of Korea
| | - Na Na Kim
- National Institute of Fisheries Science, Changwon, Republic of Korea
| | - Jeonghoon Han
- Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology (KIOST), Busan, Republic of Korea
| | - Heung-Sik Park
- Research Project Development, Korea Institute of Ocean & Technology (KIOST), Busan, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean & Technology (KIOST), Jeju, Korea
| | - Young-Ung Choi
- Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology (KIOST), Busan, Republic of Korea
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Jung YH, Kim H, Seo S, Lee D, Lee JY, Moon JY, Cheon GJ, Choi SH, Kang DH. Central metabolites and peripheral parameters associated neuroinflammation in fibromyalgia patients: A preliminary study. Medicine (Baltimore) 2023; 102:e33305. [PMID: 37000093 PMCID: PMC10063264 DOI: 10.1097/md.0000000000033305] [Citation(s) in RCA: 1] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 04/01/2023] Open
Abstract
To identify central metabolites and peripheral measures associated with neuroinflammation in fibromyalgia (FM), we scanned [11C]-(R)-PK11195 positron emission tomography and magnetic resonance spectroscopy in FM patients. We measured associations between neurometabolite levels measured by magnetic resonance spectroscopy and the extent of neuroinflammation inferred by the distribution volume ratios of [11C]-(R)-PK11195 positron emission tomography in 12 FM patients and 13 healthy controls. We also examined the associations between peripheral parameters, such as creatinine and C-reactive protein, and neuroinflammation. In FM patients, we found negative correlations between neuroinflammation and the creatine (Cr)/total creatine (tCr; Cr + phosphocreatine) ratios in the right (r = -0.708, P = .015) and left thalamus (r = -0.718, P = .008). In FM patients, negative correlations were apparent between neuroinflammation and the glutamate/tCr ratio in the right insula (r = -0.746, P = .005). In FM patients, we found negative correlations between neuroinflammation in the left thalamus (r = -0.601, P = .039) and left insula (r = -0.598, P = .040) and the blood creatinine levels. Additionally, we found significant correlations of other peripheral measures with neuroinflammation in FM patients. Our results suggest that both central metabolites, such as Cr and glutamate, and peripheral creatinine and other parameters are associated with neuroinflammation in patients with FM.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Seongho Seo
- Department of Electronic Engineering, Pai Chai University, Daejeon, Republic of Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jae-Yeon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Gi Jeong Cheon
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University College of Medicine and Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Seoul Chung Psychiatry Clinic, Seoul, Republic of Korea
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Wasana WP, Senevirathne A, Nikapitiya C, Lee JS, Kang DH, Kwon KK, Oh C, De Zoysa M. Probiotic effects of Pseudoalteromonas ruthenica: Antibacterial, immune stimulation and modulation of gut microbiota composition. Fish Shellfish Immunol 2022; 131:229-243. [PMID: 36210003 DOI: 10.1016/j.fsi.2022.09.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to characterise and evaluate the probiotic properties of a newly isolated marine bacterium, strain S6031. The isolated strain was identified as Pseudoalteromonas ruthenica. In vivo experiments were conducted with P. ruthenica-immersed larvae and P. ruthenica-enriched Artemia fed to adult zebrafish. Disease tolerance of larval zebrafish against Edwardsiella piscicida was demonstrated by 66.34% cumulative per cent survival (CPS) in the P. ruthenica-exposed group, which was higher than the CPS of the control (46.67%) at 72 h post challenge (hpc). Heat-stressed larvae had 55% CPS in the P. ruthenica-immersed group, while the control had 30% CPS at 60 hpc. Immune-stress response gene transcripts (muc5.1, muc5.2, muc5.3, alpi2, alpi3, hsp70, and hsp90a) were induced, while pro-inflammatory genes (tnfα, il1b, and il6) were downregulated in P. ruthenica-immersed larvae compared to the control. This trend was confirmed by low pro-inflammatory and high stress-responsive protein expression levels in P. ruthenica-exposed larvae. Adult zebrafish had higher CPS (27.2%) in the P. ruthenica-fed group than the control (9.52%) upon E. piscicida challenge, suggesting increased disease tolerance. Histological analysis demonstrated modulation of goblet cell density and average villus height in the P. ruthenica-supplemented group. Metagenomics analysis clearly indicated modulation of alpha diversity indices and the relative abundance of Proteobacteria in the P. ruthenica-supplemented zebrafish gut. Furthermore, increased Firmicutes colonisation and reduced Bacteroidetes abundance in the gut were observed upon P. ruthenica supplementation. Additionally, this study confirmed the concentration-dependent increase of colony dispersion and macrophage uptake upon mucin treatment. In summary, P. ruthenica possesses remarkable functional properties as a probiotic that enhances host defence against diseases and thermal stress.
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Affiliation(s)
- Withanage Prasadini Wasana
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Amal Senevirathne
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chamilani Nikapitiya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Jong-Soo Lee
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Gujwa‑eup, Jeju Special Self-Governing Province 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Kae Kyoung Kwon
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology (KIOST), Busan, Republic of Korea; Department of Ocean Science, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Chulhong Oh
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Gujwa‑eup, Jeju Special Self-Governing Province 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea.
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Shin JS, Song CU, Choi H, Kwon KK, Kang DH, Eyun SI, Choi KS. The complete mitochondrial genome of the sand dollar Astriclypeus mannii (Verrill, 1867) (Echinoidea: Astriclypeidae) in the subtidal sand flat in Jeju Island off the south coast of Korea. Mitochondrial DNA B Resour 2022; 7:1602-1603. [PMID: 36106189 PMCID: PMC9467572 DOI: 10.1080/23802359.2022.2116946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Jong-Seop Shin
- Department of Marine Life Science (BK21 FOUR) and Marine Science Institute, Jeju National University, Jeju, Korea
| | - Chi-une Song
- Department of Life Science, Chung-Ang University, Seoul, Korea
| | - Hyeongwoo Choi
- Department of Life Science, Chung-Ang University, Seoul, Korea
| | - Kae Kyoung Kwon
- Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan, Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Jeju, Korea
| | - Seong-il Eyun
- Department of Life Science, Chung-Ang University, Seoul, Korea
| | - Kwang-Sik Choi
- Department of Marine Life Science (BK21 FOUR) and Marine Science Institute, Jeju National University, Jeju, Korea
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Hettiarachchi SA, Hyeon JY, Mahardini A, Kim HS, Byun JH, Kim HJ, Jeong JG, Yeo JK, Kim SK, Kim SJ, Heo YS, Sathyadith J, Kang DH, Hur SP. DNA barcoding and morphological identification of spiny lobsters in South Korean waters: a new record of Panulirus longipes and Panulirus homarus homarus. PeerJ 2022; 10:e12744. [PMID: 35047236 PMCID: PMC8757375 DOI: 10.7717/peerj.12744] [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: 07/17/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023] Open
Abstract
To date, 19 species of spiny lobsters from the genus Panulirus have been discovered, of which only P. japonicus, P. penicilatus, P. stimpsoni, and P. versicolor have been documented in South Korean waters. In this study, we aimed to identify and update the current list of spiny lobster species that inhabit South Korean waters based on the morphological features and the phylogenetic profile of cytochrome oxidase I (COI) of mitochondrial DNA (mtDNA). Spiny lobsters were collected from the southern and eastern coasts of Jeju Island, South Korea. Phylogenetic analyses were performed using neighbor-joining (NJ), maximum likelihood (ML), and Bayesian inference (BI) methods. The ML tree was used to determine the spiny lobster lineages, thereby clustering the 17 specimens collected in this study into clades A, B, C, and D, which were reciprocally monophyletic with P. japonicus, P. homarus homarus, P. longipes, and P. stimpsoni, respectively. These clades were also supported by morphological examinations. Interestingly, morphological variations, including the connected pleural and transverse groove at the third abdominal somite, were observed in four specimens that were genetically confirmed as P. japonicus. This finding is novel within the P. japonicus taxonomical reports. Additionally, this study updates the documentation of spiny lobsters inhabiting South Korean waters as P. longipes and P. homarus homarus were recorded for the first time in this region.
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Affiliation(s)
- Sachithra Amarin Hettiarachchi
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea,Department of Fisheries and Aquaculture, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara, Sri Lanka,Department of Ocean Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Ji-Yeon Hyeon
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea,Department of Biology, Jeju National University, Jeju, Republic of Korea
| | - Angka Mahardini
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Hyung-Suk Kim
- Department of Kinesiology, Jeju National University, Jeju, Republic of Korea
| | - Jun-Hwan Byun
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Han-Jun Kim
- Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology, Busan, Republic of Korea
| | - Jong-Gyun Jeong
- LED-Marine Biology Convergence Technology Research Center, Pukyong National University, Busan, Republic of Korea
| | - Jung-Kyu Yeo
- LED-Marine Biology Convergence Technology Research Center, Pukyong National University, Busan, Republic of Korea
| | - Shin-Kwon Kim
- Aquaculture Research Division, National Institute of Fisheries Science, Busan, Republic of Korea
| | - Se-Jae Kim
- Department of Biology, Jeju National University, Jeju, Republic of Korea
| | - Youn-Seong Heo
- LED-Marine Biology Convergence Technology Research Center, Pukyong National University, Busan, Republic of Korea
| | - Jonathan Sathyadith
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea,Department of Ocean Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea,Department of Ocean Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Sung-Pyo Hur
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea,Department of Ocean Science, University of Science and Technology, Daejeon, Republic of Korea
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Lee Y, Jo E, Lee YJ, Eom TY, Gang Y, Kang YH, Marasinghe SD, Hettiarachchi SA, Kang DH, Oh C. A Novel Agarase, Gaa16B, Isolated from the Marine Bacterium Gilvimarinus agarilyticus JEA5, and the Moisturizing Effect of Its Partial Hydrolysis Products. Mar Drugs 2021; 20:md20010002. [PMID: 35049857 PMCID: PMC8778308 DOI: 10.3390/md20010002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 12/19/2022] Open
Abstract
We recently identified a β-agarase, Gaa16B, in the marine bacterium Gilvimarinus agarilyticus JEA5. Gaa16B, belonging to the glycoside hydrolase 16 family of β-agarases, shows less than 70.9% amino acid similarity with previously characterized agarases. Recombinant Gaa16B lacking the carbohydrate-binding region (rGaa16Bc) was overexpressed in Escherichia coli and purified. Activity assays revealed the optimal temperature and pH of rGaa16Bc to be 55 °C and pH 6–7, respectively, and the protein was highly stable at 55 °C for 90 min. Additionally, rGaa16Bc activity was strongly enhanced (2.3-fold) in the presence of 2.5 mM MnCl2. The Km and Vmax of rGaa16Bc for agarose were 6.4 mg/mL and 953 U/mg, respectively. Thin-layer chromatography analysis revealed that rGaa16Bc can hydrolyze agarose into neoagarotetraose and neoagarobiose. Partial hydrolysis products (PHPs) of rGaa16Bc had an average molecular weight of 88–102 kDa and exhibited > 60% hyaluronidase inhibition activity at a concentration of 1 mg/mL, whereas the completely hydrolyzed product (CHP) showed no hyaluronidase at the same concentration. The biochemical properties of Gaa16B suggest that it could be useful for producing functional neoagaro-oligosaccharides. Additionally, the PHP of rGaa16Bc may be useful in promoting its utilization, which is limited due to the gel strength of agar.
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Affiliation(s)
- Youngdeuk Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
| | - Eunyoung Jo
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
| | - Yeon-Ju Lee
- Marine Natural Products Chemistry Laboratory, Korea Institute of Ocean Science and Technology, 385 Haeyangro, Busan 49111, Korea;
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Tae-Yang Eom
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Yehui Gang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Yoon-Hyeok Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Svini Dileepa Marasinghe
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Sachithra Amarin Hettiarachchi
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
- Department of Fisheries and Aquaculture, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara 81000, Sri Lanka
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
| | - Chulhong Oh
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology, Gujwa-eup, Jeju 63349, Korea; (Y.L.); (E.J.); (T.-Y.E.); (Y.G.); (Y.-H.K.); (S.D.M.); (S.A.H.); (D.-H.K.)
- Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon Metropolitan City 34113, Korea
- Correspondence: ; Tel.: +82-64-798-6102; Fax: +82-64-798-6039
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Lee D, Choi SH, Noh E, Lee WJ, Jang JH, Moon JY, Kang DH. Impaired Performance in Mental Rotation of Hands and Feet and Its Association with Social Cognition in Patients with Complex Regional Pain Syndrome. Pain Med 2021; 22:1411-1419. [PMID: 33749758 PMCID: PMC8185560 DOI: 10.1093/pm/pnaa482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Objectives. So far, dysfunction in mental rotation has been assessed in relation to the left- or right-sided CRPS. Here we examined mental rotation in patients with upper or lower limb CRPS. Considering the potential role of socio-emotional functioning on the perception of body image, we further investigated the association between performance on mental rotation and socio-emotional characteristics. Methods. We examined the performance of 36 patients with upper or lower limb CRPS on the limb laterality recognition. Accuracy and response times for pictures of hands and feet at 4 rotation angles were evaluated. Socio-emotional functioning was measured by the Interpersonal Reactivity Scale and the Toronto Alexithymia Scale. Results. Patients with upper limb pain showed longer RTs to recognize the laterality of hands than feet (P = 0.002), whereas patients with lower limb pain showed longer RTs for feet than hands (P = 0.039). Exploratory correlation analyses revealed that RTs for feet were negatively correlated with the levels of empathic ability to take another’s perspective (P = 0.006) and positively correlated with the level of emotional difficulty in identifying feelings (P = 0.006). Conclusions. This study is the first to report selectively impaired mental rotation of hands vs feet in patients with upper or lower limb CRPS. The findings suggest that impaired mental rotation derives from relative deficits in the representation of the affected limb. Correlations between impaired mental rotation and socio-emotional inability indicate that an altered body schema may be closely associated with impaired social cognitive aspects in CRPS patients.
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Affiliation(s)
- Dasom Lee
- Emotional Information and Communication Technology Industrial Association, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eunchung Noh
- Interdisciplinary Program in Neuroscience, Seoul National University, Seoul, Republic of Korea
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Industrial Association, Seoul, Republic of Korea
- Correspondence to: Do-Hyung Kang, MD, PhD, Emotional Information and Communication Technology Industrial Association, 06168, Samseong-ro 508, Gangnam-gu, Seoul, Republic of Korea. Tel: +82-42-860-1648; Fax: +82-50-7083-6323; E-mail:
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10
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Kim T, Lee JCY, Kang DH, Duprey NN, Leung KS, Archana A, Baker DM. Modification of fatty acid profile and biosynthetic pathway in symbiotic corals under eutrophication. Sci Total Environ 2021; 771:145336. [PMID: 33736184 DOI: 10.1016/j.scitotenv.2021.145336] [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] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/08/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
Symbiotic corals receive energy not only by ingesting food (e.g. plankton, inorganic/organic matter, i.e. heterotrophy), but also by endosymbiosis, which supplies photosynthates (dissolved inorganic carbon, i.e. autotrophy). These two sources of energy have distinct fatty acid (FA) profiles, which can be used to differentiate corals by their primary feeding mode. FA profiles have been applied as biomarkers to evaluate the quality of nutrition in the midst of environmental change. However, species-specific responses of coral FA profiles and biosynthetic pathway under cultural eutrophication are still unknown. We collected two coral species (Acropora samoensis, Platygyra carnosa) from sites with different levels of eutrophication to test for variations in FA profiles. Gas Chromatography-Mass Spectrometry (GC-MS) was performed to identify FA profiles and quantify their concentration. Our main findings are threefold: 1) chronic eutrophication inhibits corals' ability to synthesize essential FA; 2) PUFA:SFA ratio and certain FA biomarkers or their pathway can be successfully utilized to determine the relative degree of autotrophy and heterotrophy in corals; 3) under eutrophication, different FA profiles of coral host tissue are attributed to different feeding strategies. Thus, our research provides significant new insights into the roles of FA as a risk assessment tool in coral reef ecosystems under the pressure of eutrophication.
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Affiliation(s)
- Taihun Kim
- School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong Special Administrative Region; Swire Institute of Marine Science, The University of Hong Kong, Cape d'Aguilar Road, Shek O, Hong Kong Special Administrative Region
| | - Jetty C Y Lee
- School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong Special Administrative Region
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science & Technology, 2670 Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea
| | - Nicolas N Duprey
- Max Planck Institute for Chemistry (Otto Hahn Institute), Hahn-Meitner-Weg 1, 55128 Mainz, Germany
| | - Kin Sum Leung
- School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong Special Administrative Region
| | - Anand Archana
- School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong Special Administrative Region; Swire Institute of Marine Science, The University of Hong Kong, Cape d'Aguilar Road, Shek O, Hong Kong Special Administrative Region
| | - David M Baker
- School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pokfulam Road, Hong Kong Special Administrative Region; Swire Institute of Marine Science, The University of Hong Kong, Cape d'Aguilar Road, Shek O, Hong Kong Special Administrative Region.
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Abstract
This study aimed to investigate the levels of creatine (Cr) metabolites in the
anterior cingulate cortex (ACC), thalamus, and insula of patients with
fibromyalgia (FM) using proton magnetic resonance spectroscopy (MRS). The levels
of Cr and phosphocreatine (PCr) relative to total Cr (tCr), which includes Cr
and PCr, in the ACC, thalamus, and insula were determined using MRS in 12
patients with FM and in 13 healthy controls. The FM group had lower levels of
PCr/tCr in the ACC and right insula compared to healthy controls. There was a
negative correlation between Cr/tCr in the ACC and total pain levels (McGill
Pain Questionnaire-Total; r = −0.579, p = 0.049) and between Cr/tCr in the left
insula and affective pain levels (McGill Pain Questionnaire-Affective;
r = −0.638, p = 0.047) in patients with FM. In addition, there were negative
correlations between stress levels (Stress Response Inventory) and Cr/tCr in the
right (r = −0.780, p = 0.005) and left thalamus (r = −0.740, p = 0.006), as well
as in the right insula (r = −0.631, p = 0.028) in patients with FM. There were
negative correlations between symptom levels of post-traumatic stress disorder
(PTSD; PTSD checklist) and Cr/tCr in the right (r = −0.783, p = 0.004) and left
thalamus (r = −0.642, p = 0.024) of patients with FM. These findings are
paramount to understanding the decisive pathologies related to brain energy
metabolism in patients with FM.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jae-Yeon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine and Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Seoul Chung Psychiatry Clinic, Seoul, Republic of Korea
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Jeong Y, Choi WY, Park A, Lee YJ, Lee Y, Park GH, Lee SJ, Lee WK, Ryu YK, Kang DH. Marine cyanobacterium Spirulina maxima as an alternate to the animal cell culture medium supplement. Sci Rep 2021; 11:4906. [PMID: 33649424 PMCID: PMC7921123 DOI: 10.1038/s41598-021-84558-2] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/15/2021] [Indexed: 01/31/2023] Open
Abstract
Serum is a stable medium supplement for in vitro cell culture. Live cells are used in stem cell research, drug toxicity and safety testing, disease diagnosis and prevention, and development of antibiotics, drugs, and vaccines. However, use of serum in culture involves concerns such as an ethical debate regarding the collection process, lack of standardized ingredients, and high cost. Herein, therefore, we evaluated the possibility of using edible cyanobacterium (Spirulina maxima), which is a nutrient-rich, sustainable, and ethically acceptable source, as a novel substitute for fetal bovine serum (FBS). H460 cells were cultured to the 10th generation by adding a mixture of spirulina animal cell culture solution (SACCS) and FBS to the culture medium. Cell morphology and viability, cell cycle, apoptosis, proteomes, and transcriptomes were assessed. We observed that SACCS had better growth-promoting capabilities than FBS. Cell proliferation was promoted even when FBS was replaced by 50-70% SACCS; there was no significant difference in cell shape or viability. There were only slight differences in the cell cycle, apoptosis, proteomes, and transcriptomes of the cells grown in presence of SACCS. Therefore, SACCS has the potential to be an effective, low-cost, and eco-friendly alternative to FBS in in vitro culture.
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Affiliation(s)
- Younsik Jeong
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Woon-Yong Choi
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Areumi Park
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Yeon-Ji Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Youngdeuk Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Gun-Hoo Park
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
- School of Pharmacy, Sungkyunkwan University, Seoul, Republic of Korea
| | - Su-Jin Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
| | - Won-Kyu Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
- Department of Ocean Science, University of Science and Technology (UST), Jeju, Republic of Korea
| | - Yong-Kyun Ryu
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea
- Department of Ocean Science, University of Science and Technology (UST), Jeju, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju, Republic of Korea.
- Department of Ocean Science, University of Science and Technology (UST), Jeju, Republic of Korea.
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Lee Y, Kim T, Lee WK, Ryu YK, Kim JH, Jeong Y, Park A, Lee YJ, Oh C, Kang DH. The First Report to Evaluate Safety of Cyanobacterium Leptolyngbya sp. KIOST-1 for Use as a Food Ingredient: Oral Acute Toxicity and Genotoxicity Study. J Microbiol Biotechnol 2021; 31:290-297. [PMID: 33203826 PMCID: PMC9705841 DOI: 10.4014/jmb.2007.07013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/06/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Leptolyngbya sp. KIOST-1 (LK1) is a newly isolated cyanobacterium that shows no obvious cytotoxicity and contains high protein content for both human and animal diets. However, only limited information is available on its toxic effects. The purpose of this study was to validate the safety of LK1 powder. Following Organisation for Economic Co-operation and Development (OECD) guidelines, a single-dose oral toxicity test in Sprague Dawley rats was performed. Genotoxicity was assessed using a bacterial reverse mutation test with Salmonella typhimurium (strains TA98, TA100, TA1535, and TA1537) and Escherichia coli WP2 uvrA, an in vitro mammalian chromosome aberration test using Chinese hamster lung cells, and an in vivo mammalian erythrocyte micronucleus test using Hsd:ICR (CD-1) SPF mouse bone marrow. After LK1 administration (2,500 mg/kg), there were no LK1-related body weight changes or necropsy findings. The reverse mutation test showed no increased reverse mutation upon exposure to 5,000 μg/plate of the LK1 powder, the maximum tested amount. The chromosome aberration test and micronucleus assay demonstrated no chromosomal abnormalities and genotoxicity, respectively, in the presence of the LK1 powder. The absence of physiological findings and genetic abnormalities suggests that LK1 powder is appropriate as a candidate biomass to be used as a safe food ingredient.
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Affiliation(s)
- Youngdeuk Lee
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Taeho Kim
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Won-Kyu Lee
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Yong-Kyun Ryu
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Ji Hyung Kim
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea,Current address: Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Younsik Jeong
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Areumi Park
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Yeon-Ji Lee
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Chulhong Oh
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research center, Korea Institute of Ocean Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea,Corresponding author Phone: +82-64-798-6100 Fax: +82-64-798-6039 E-mail:
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Jung YH, Kim H, Lee D, Lee JY, Lee WJ, Moon JY, Choi SH, Kang DH. Abnormal neurometabolites in fibromyalgia patients: Magnetic resonance spectroscopy study. Mol Pain 2021; 17:1744806921990946. [PMID: 33573464 PMCID: PMC7887674 DOI: 10.1177/1744806921990946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This study aimed to investigate distinct neurometabolites in the anterior cingulate cortex (ACC), right and left thalamus, and insula of patients with fibromyalgia (FM) compared with healthy controls using proton magnetic resonance spectroscopy (MRS). Levels of N-acetylaspartate (NAA), N-acetylaspartylglutamate (NAAG), total NAA (tNAA = NAA + NAAG), myo-inositol (ml), glutamine (Gln), glutamate (Glu), Glx (Glu + Gln), glycerophosphocholine (GPC), total choline (tCho = GPC + phosphocholine) and glutathione (GSH) levels relative to total creatine (tCr) levels including creatine (Cr) and phosphocreatine (PCr) and relative to Cr levels were determined in the ACC, right and left thalamus, and insula in 12 patients with FM and 13 healthy controls using MRS. In the ACC, NAA/tCr (P = 0.028) and tCho/tCr (P = 0.047) were higher in patients with FM. In the right and left insula, tNAA/tCr (P = 0.019, P = 0.007, respectively) was lower in patients with FM. Patients with FM showed lower levels of ml/Cr (P = 0.037) in the right insula than healthy controls. These findings are paramount to understand decisive pathophysiological mechanisms related to abnormal features in the brain and parasympathetic nervous systems in FM. We suggest that the results presented herein may be essential to understand hidden pathological mechanisms and also life system potential as protective and recovering metabolic strategies in patients with FM.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Jae-Yeon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University College of Medicine and Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Korea
- Do-Hyung Kang, Emotional Information and Communication Technology Association, 508, Samseong-ro, Gangnam-gu, Seoul, Korea.
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15
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Edirisinghe SL, Rajapaksha DC, Nikapitiya C, Oh C, Lee KA, Kang DH, De Zoysa M. Spirulina maxima derived marine pectin promotes the in vitro and in vivo regeneration and wound healing in zebrafish. Fish Shellfish Immunol 2020; 107:414-425. [PMID: 33038507 DOI: 10.1016/j.fsi.2020.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 07/02/2020] [Revised: 09/26/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
Purified bioactive components of marine algae have shown great pharmaceutical and biomedical potential, including wound healing activity. However, the activity of Spirulina maxima is the least documented with regard to wound healing potential. In the present study, we investigated the regenerative and wound healing activities of a Spirulina (Arthrospira) maxima based pectin (SmP) using in vitro human dermal fibroblasts (HDFs) and in vivo zebrafish model. SmP treated (12.5-50 μg/mL) HDFs showed increased cell proliferation by 20-40% compared to the untreated HDFs. Moreover, in vitro wound healing results in HDFs demonstrated that SmP decreased the open wound area % in concentration-dependent manner at 12.5 (32%) and 25 μg/mL (12%) compared to the control (44%). Further, zebrafish larvae displayed a greater fin regenerated area in the SmP exposed group at 25 (0.48 mm2) and 50 μg/mL (0.51 mm2), whereas the untreated group had the lowest regenerated area (0.40 mm2) at 3 days post amputation. However, fin regeneration was significantly (P < 0.001) higher only in the SmP treated group at 50 μg/mL. Furthermore, the open skin wound healing % in adult zebrafish was significantly higher (P < 0.05) after topical application (600 μg/fish) of SmP (46%) compared to the control (38%). Upregulation of genes such as tgfβ1, timp2b, mmp9, tnf-α, and il-1β, and chemokines such as cxcl18b, ccl34a.4, and ccl34b.4, in the muscle and kidney tissues of SmP treated fish compared to the respective control group was demonstrated using qRT-PCR. Histological analysis results further supported the rapid epidermal growth and tissue remodeling in SmP treated fish, suggesting that SmP exerts positive effects associated with wound healing. Therefore, SmP can be considered a potential regenerative and wound healing agent.
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Affiliation(s)
- S L Edirisinghe
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - D C Rajapaksha
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chamilani Nikapitiya
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chulhong Oh
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Kyoung-Ah Lee
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province 63349, Republic of Korea.
| | - Mahanama De Zoysa
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea.
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Lee D, Kang DH. Top-down predictive impairment may play a potential role in social cognition in patients with CRPS. Ann Palliat Med 2020; 9:4403-4407. [DOI: 10.21037/apm-20-900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/08/2020] [Indexed: 11/06/2022]
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Lee WJ, Jung CH, Hwang JY, Seong SJ, Han CH, Park JW, Jang JH, Lee D, Kang DH. Prognostic Factors in Complex Regional Pain Syndrome Type 1 Occurring in the Korean Army. Pain Med 2020; 20:1989-1996. [PMID: 30986307 DOI: 10.1093/pm/pnz076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVES In Korea, patients diagnosed with complex regional pain syndrome (CRPS) in the army are typically discharged from the army; however, the course of the disease after discharge is not known. The purpose of this study was to investigate the course of CRPS that occurred in the army and to identify the influences of various clinical and psychosocial factors immediately before discharge on the disease course. METHODS Clinical profiles and psychosocial status were collected from the medical records of 16 patients with CRPS type 1 who were discharged during the period between March 2017 and April 2018. The degree of improvement after discharge was assessed by follow-up evaluation through telephone contact. Cox proportional hazards regression was performed to identify clinical and psychosocial predictors for the rate of recovery. RESULTS The median time to recovery after discharge was 39 weeks (95% confidence interval [CI] = 8.8-69.2 weeks). The sole predictor for time to recovery after discharge was the time period from the onset of pain to discharge. Each one-week increase in the duration of pain experienced in the military was associated with a 18.2% (95% CI = 5.3%-29.5%) reduction in the rate of recovery after discharge (P = 0.007). CONCLUSIONS Patients who experienced a short period of pain in the military demonstrated a relatively good prognosis after discharge. This may show how prolonged pain in the army could affect the experience of pain from a social point of view, in that it shows the disease course after a change in the social environment.
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Affiliation(s)
- Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Armed Forces Capital Hospital, Seongnam, Republic of Korea
| | - Cheol Hee Jung
- Department of Anesthesiology and Pain Medicine, Armed Forces Capital Hospital, Seongnam, Republic of Korea
| | - Jae Yeon Hwang
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Su-Jeong Seong
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Chang Hwan Han
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Jin Woo Park
- Department of Orthopedic Surgery, Kangwon National University College of Medicine, Chuncheon, Republic of Korea
| | - Joon Hwan Jang
- Department of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Dasom Lee
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
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18
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Lee D, Lee WJ, Choi SH, Jang JH, Kang DH. Long-term beneficial effects of an online mind-body training program on stress and psychological outcomes in female healthcare providers: A non-randomized controlled study. Medicine (Baltimore) 2020; 99:e21027. [PMID: 32769863 PMCID: PMC7593019 DOI: 10.1097/md.0000000000021027] [Citation(s) in RCA: 4] [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: 12/02/2022] Open
Abstract
Mind-body training (MBT) programs are effective interventions for relieving stress and improving psychological capabilities. To expand our previous study which demonstrated the short-term effects of an 8-week online MBT program, the present study investigated whether those short-term effects persist up to a month after the end of the intervention.Among previous participants, 56 (64%) participated in this follow-up study, 25 in the MBT group and 31 in the control group. Outcome measures included the stress response, emotional intelligence, resilience, coping strategies, positive and negative affect, and anger expression of both groups at baseline, at 8 weeks (right after the training or waiting period), and at 12 weeks (a month after the training or waiting period).The MBT group showed a greater decrease in stress response at 8 weeks, and this reduction remained a month after the end of the intervention. The effect of MBT on resilience and effective coping strategies was also significant at 8 weeks and remained constant a month later. However, the improvement to emotional intelligence and negative affect did not persist a month after training.These findings suggest that the beneficial short-term effects of MBT may last beyond the training period even without continuous practice, but the retention of these benefits seems to depend on the outcome variables. Through a convenient, affordable, and easily accessible online format, MBT may provide cost-effective solutions for employees at worksites.
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Affiliation(s)
- Dasom Lee
- Emotional Information and Communication Technology Association
- Department of Psychiatry, Seoul National University Hospital
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital
- Department of Psychiatry and Institute of Human Behavioral Sciences
| | - Joon-Hwan Jang
- Department of Psychiatry, Seoul National University Hospital
- Department of Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association
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19
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Oh GW, Nam SY, Heo SJ, Kang DH, Jung WK. Characterization of ionic cross-linked composite foams with different blend ratios of alginate/pectin on the synergistic effects for wound dressing application. Int J Biol Macromol 2020; 156:1565-1573. [DOI: 10.1016/j.ijbiomac.2019.11.206] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/19/2019] [Accepted: 11/26/2019] [Indexed: 12/22/2022]
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20
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Lee D, Lee BC, Choi SH, Kang DH, Jon DI, Jung MH. Effects of Paliperidone Palmitate on Healthcare Utilization and Costs for Patients with Schizophrenia: A Claim-based Mirror-image Study in South Korea. Clin Psychopharmacol Neurosci 2020; 18:303-310. [PMID: 32329310 PMCID: PMC7242100 DOI: 10.9758/cpn.2020.18.2.303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/05/2019] [Accepted: 12/18/2019] [Indexed: 12/12/2022]
Abstract
Objective Long-acting injectable (LAI) antipsychotics, such as paliperidone palmitate (PP), are known to improve treatment adherence in patients with schizophrenia, which can lead to reductions in relapse and hospitalization rates. However, relatively few studies have demonstrated the economic impact of LAIs, especially in Asian populations. Methods We conducted a claim-based mirror-image study to explore changes in healthcare utilization and associated costs, among 1,272 South Korean patients with schizophrenia (ICD-10-CM code F20), between the 1-year periods before and after the initiation of PP treatment. Results Patients accessed outpatient services more frequently after versus before starting PP treatment, with the number of prescription days increasing by 133.45 (p < 0.0001) and the associated costs increasing by USD 1,497.15 (p < 0.0001). The number of admission days was reduced by 11.33 after starting PP treatment (p < 0.0001) and the associated costs were reduced by USD 1,220.75 (p < 0.0001). However, admission cost savings were different according to patients’ oral drug compliance. The daily dosages for benztropine, procyclidine, and propranolol decreased, showing that there were fewer side-effects after PP-treatment (p < 0.0001). Conclusion Although the high acquisition cost of PP has been regarded as an obstacle to its clinical use, our results imply that the high prescription costs for PP may be counterbalanced by the reduced admission costs associated with its use. Economic outcomes for patients treated with LAIs should be investigated further to help healthcare decision-makers and providers to determine the value of LAIs relative to other treatment medications.
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Affiliation(s)
- Dasom Lee
- Emotional Information and Communication Technology Association, Seoul, Korea
| | - Boung Chul Lee
- Health Insurance Review and Assessment Service, Wonju, Korea.,Department of Psychiatry, Hallym University Hangang Sacred Heart Hospital, College of Medicine, Hallym University, Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital.,Department of Psychiatry, Institute of Human Behavioral Medicine in SNU-MRC, Seoul National University College of Medicine, Seoul, Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Korea
| | - Duk-In Jon
- Department of Psychiatry, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang, Korea
| | - Myung Hun Jung
- Department of Psychiatry, Hallym University Sacred Heart Hospital, College of Medicine, Hallym University, Anyang, Korea
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21
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Chandrarathna H, Liyanage T, Edirisinghe S, Dananjaya S, Thulshan E, Nikapitiya C, Oh C, Kang DH, De Zoysa M. Marine Microalgae, Spirulina maxima-Derived Modified Pectin and Modified Pectin Nanoparticles Modulate the Gut Microbiota and Trigger Immune Responses in Mice. Mar Drugs 2020; 18:E175. [PMID: 32245246 PMCID: PMC7143556 DOI: 10.3390/md18030175] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 12/12/2022] Open
Abstract
This study evaluated the modulation of gut microbiota, immune responses, and gut morphometry in C57BL/6 mice, upon oral administration of S. maxima-derived modified pectin (SmP, 7.5 mg/mL) and pectin nanoparticles (SmPNPs; 7.5 mg/mL). Metagenomics analysis was conducted using fecal samples, and mice duodenum and jejunum were used for analyzing the immune response and gut morphometry, respectively. The results of metagenomics analysis revealed that the abundance of Bacteroidetes in the gut increased in response to both modified SmP and SmPNPs (75%) as compared with that in the control group (66%), while that of Firmicutes decreased in (20%) as compared with that in the control group (30%). The mRNA levels of mucin, antimicrobial peptide, and antiviral and gut permeability-related genes in the duodenum were significantly (p < 0.05) upregulated (> 2-fold) upon modified SmP and SmPNPs feeding. Protein level of intestinal alkaline phosphatase was increased (1.9-fold) in the duodenum of modified SmPNPs feeding, evidenced by significantly increased goblet cell density (0.5 ± 0.03 cells/1000 µm2) and villi height (352 ± 10 µm). Our results suggest that both modified SmP and SmPNPs have the potential to modulate gut microbial community, enhance the expression of immune related genes, and improve gut morphology.
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Affiliation(s)
- H.P.S.U. Chandrarathna
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - T.D. Liyanage
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - S.L. Edirisinghe
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - S.H.S. Dananjaya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - E.H.T. Thulshan
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - Chamilani Nikapitiya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
| | - Chulhong Oh
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Korea;
- Department of Ocean Science, University of Science and Technology (UST), Jeju 63349, Korea
| | - Do-Hyung Kang
- Jeju Marine Research Center, Korea Institute of Ocean Science and Technology (KIOST), Jeju 63349, Korea;
- Department of Ocean Science, University of Science and Technology (UST), Jeju 63349, Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Korea; (H.P.S.U.C.); (T.D.L.); (S.L.E.); (S.H.S.D.); (E.H.T.T.); (C.N.)
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22
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Jung YH, Lee WJ, Lee D, Lee JY, Moon JY, Kim YC, Choi SH, Kang DH. Commonalities and differences in abnormal peripheral metabolites between patients with fibromyalgia and complex regional pain syndrome. Int J Neurosci 2019; 130:653-661. [PMID: 31870212 DOI: 10.1080/00207454.2019.1702542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background: Fibromyalgia (FM) and complex regional pain syndrome (CRPS) share many pathological mechanisms related to chronic pain that could contribute to multifactorial pathological mechanisms.Methods: We investigated peripheral metabolites in FM and CRPS patients compared to healthy controls based on cross-sectional study.Results: Mean corpuscular hemoglobin (p < 0.001), mean corpuscular volume (p = 0.014), and total bilirubin levels (p = 0.017) were lower in FM patients than in healthy controls. On the other hand, CRPS patients showed lower levels of total bilirubin than healthy controls (p = 0.037). Creatinine level was lower in FM patients (p = 0.057) compared to healthy controls, particularly when comparing the low-hemoglobin subgroup among FM patients (p = 0.035) with the low-hemoglobin subgroup among healthy controls. Red blood cell count (r = -0.620, p = 0.031), hematocrit (r = -0.593, p = 0.042), and creatinine level (r = -0.598, p = 0.040) showed negative correlations with McGill Pain Questionnaire-Affective (MPQ-A) scores in FM patients. A negative correlation was observed between MCV and McGill Pain Questionnaire-Sensory scores (r = -0.680, p = 0.015) in CRPS patients.Conclusion: We found specific peripheral metabolites that may exhibit different tendency between FM and CRPS patients as well as some common metabolites, which may be associated with peripheral pathology in the patients. Considering this study had a few limitations such as a small sample sizes and using a liberal threshold of significance in the correlation analysis, future studies with larger sample sizes may be needed to generalize these findings.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Emotional Information and Communication Technology Association, Seoul, Republic of Korea
| | - Jae Yeon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
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23
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Edirisinghe SL, Dananjaya SHS, Nikapitiya C, Liyanage TD, Lee KA, Oh C, Kang DH, De Zoysa M. Novel pectin isolated from Spirulina maxima enhances the disease resistance and immune responses in zebrafish against Edwardsiella piscicida and Aeromonas hydrophila. Fish Shellfish Immunol 2019; 94:558-565. [PMID: 31546036 DOI: 10.1016/j.fsi.2019.09.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 06/10/2023]
Abstract
In this study, we demonstrate the enhanced disease resistance and positive immunomodulation of novel pectin isolated from Spirulina maxima (SmP) in zebrafish model. Zebrafish larvae exposed to SmP had significantly (p < 0.05) higher cumulative percent survival (CPS) at 25 (44.0%) and 50 μg/mL (67.0%) against Edwardsiella piscicida compared to the control. However, upon Aeromonas hydrophila challenge, SmP exposed larvae at 50 μg/mL had slightly higher CPS (33.3%) compared to control group (26.7%). SmP supplemented zebrafish exhibited the higher CPS against E. piscicida (93.3%) and A. hydrophila (60.0%) during the early stage of post-infection (<18 hpi). qRT-PCR results demonstrated that exposing (larvae) and feeding (adults) of SmP, drive the modulation of a wide array of immune response genes. In SmP exposed larvae, up-regulation of the antimicrobial enzyme (lyz: 3.5-fold), mucin (muc5.1: 2.84, muc5.2: 2.11 and muc5.3: 2.40-fold), pro-inflammatory cytokines (il1β: 1.79-fold) and anti-oxidants (cat: 2.87 and sod1: 1.82-fold) were identified. In SmP fed adult zebrafish (gut) showed >2-fold induced pro-inflammatory cytokine (il1β) and chemokines (cxcl18b, ccl34a.4 and ccl34b.4). Overall results confirmed the positive modulation of innate immune responses in larval stage and it could be the main reason for developing disease resistance against E. piscicida and A. hydrophila. Thus, non-toxic, natural and biodegradable SmP could be considered as the potential immunomodulatory agent for sustainable aquaculture.
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Affiliation(s)
- S L Edirisinghe
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - S H S Dananjaya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Chamilani Nikapitiya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - T D Liyanage
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Kyoung-Ah Lee
- Jeju Marine Research Institute, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province, 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province, 63349, Republic of Korea
| | - Chulhong Oh
- Jeju Marine Research Institute, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province, 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province, 63349, Republic of Korea
| | - Do-Hyung Kang
- Jeju Marine Research Institute, Korea Institute of Ocean Science and Technology (KIOST), Jeju Special Self-Governing Province, 63349, Republic of Korea; Department of Ocean Science, University of Science and Technology (UST), Jeju Special Self-Governing Province, 63349, Republic of Korea.
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea.
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Song NA, Lee S, Hwang HS, Choi KH, Kang KH, Om SY, Kim DH, Song JM, Song JK, Kang DH, Yang HM. P5989Effect of neprilysin inhibitor for ischemic mitral regurgitation after myocardial injury. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0710] [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
After myocardial infarction (MI), mitral valve (MV) tethering and fibrosis stimulate functional mitral regurgitation (MR), resulting in high morbidity of heart failure and cardiac mortality. However, pharmacological treatment has not been proven effective in reducing ischemic MR. MV change post-MI is associated with an excessive endothelial-to-mesenchymal transition (EMT) by transforming growth factor (TGF)-β overexpression and also with left ventricular (LV) remodeling. In a recent clinical study using echocardiography, angiotensin receptor neprilysin inhibitor (ARNI) reduced functional MR to a greater extent than did valsartan, but the mechanism was not revealed.
Purpose
This study tested the hypothesis that treatment of neprilysin inhibitor attenuates functional MR after MI by facilitating LV reverse remodeling and suppressing EMT which mitigates inadequate leaflet adaptation.
Methods
In male Sprague-Dawley rats (n=31), functional MR was induced by occluding the left circumflex coronary artery. Two weeks after MI, MR and LV dilatation were confirmed by echocardiography and magnetic resonance imaging (MRI). Rats were randomly assigned to LCZ696 treatment (ARNI, 60 mg/kg/d, n=10), valsartan treatment (30mg/kg/d, n=10), or corn oil only (MR control group; n=11). After 6 weeks, LV volumes, functions and MR extent were quantified by using echocardiography, cardiac MRI and pressure-volume loop analysis. Also, excised mitral leaflets and LV were analyzed by histopathology and primary cultured valvular endothelial cells (VECs) were evaluated focusing on molecular changes.
Results
LCZ696 significantly attenuated post-MI LV dilatation after 6 weeks when compared with the control group (LV end-diastolic volume (EDV), 461.3±41.3 uL versus 525.1±78.2 uL; p<0.05), while valsartan did not (LV EDV, 471.2±26.8 uL; p>0.05 to control). There were no significant differences in the change of arterial pressure and ejection fraction between the treatment groups, however, dP/dt was greater in the LCZ696 group than in the MR control group (8203±286 mmHg/s for LCZ696 versus 6936±555 mmHg/s for MR control; p=0.01). MR extent and LA volume were significantly decreased in the LCZ696 group compared with the valsartan group. Pathological analysis showed that fibrosis was more prominent in the MR control than in the LCZ696 group. LCZ696 strongly reduced leaflet thickness, TGF-β, and downstream phosphorylated extracellular-signal-regulated kinase and EMT (25.4±11.8% vs. 53.4±12.6% α-smooth muscle actin-positive VECs; p<0.05). Leaflet area increased comparably (5%) in the LCZ696 group compared with the valsartan group.
Conclusions
Neprilysin inhibitor has positive effects on LV reverse remodeling and also directly modulates profibrotic changes of MV leaflets post-MI without eliminating adaptive growth. Understanding the mechanisms could provide new opportunities to ARNI reducing ischemic MR.
Acknowledgement/Funding
This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2014R1A6A3A04056205). It was also
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Affiliation(s)
- N A Song
- Asan Medical Center, Seoul, Korea (Republic of)
| | - S Lee
- Asan Medical Center, Seoul, Korea (Republic of)
| | - H S Hwang
- Asan Medical Center, Seoul, Korea (Republic of)
| | - K H Choi
- Asan Medical Center, Seoul, Korea (Republic of)
| | - K H Kang
- Asan Medical Center, Seoul, Korea (Republic of)
| | - S Y Om
- Asan Medical Center, Seoul, Korea (Republic of)
| | - D H Kim
- Asan Medical Center, Seoul, Korea (Republic of)
| | - J M Song
- Asan Medical Center, Seoul, Korea (Republic of)
| | - J K Song
- Asan Medical Center, Seoul, Korea (Republic of)
| | - D H Kang
- Asan Medical Center, Seoul, Korea (Republic of)
| | - H M Yang
- Seoul National University Hospital, Seoul, Korea (Republic of)
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25
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Hettiarachchi SA, Kwon YK, Lee Y, Jo E, Eom TY, Kang YH, Kang DH, De Zoysa M, Marasinghe SD, Oh C. Characterization of an acetyl xylan esterase from the marine bacterium Ochrovirga pacifica and its synergism with xylanase on beechwood xylan. Microb Cell Fact 2019; 18:122. [PMID: 31286972 PMCID: PMC6615230 DOI: 10.1186/s12934-019-1169-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 06/26/2019] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Acetyl xylan esterase plays an important role in the complete enzymatic hydrolysis of lignocellulosic materials. It hydrolyzes the ester linkages of acetic acid in xylan and supports and enhances the activity of xylanase. This study was conducted to identify and overexpress the acetyl xylan esterase (AXE) gene revealed by the genomic sequencing of the marine bacterium Ochrovirga pacifica. RESULTS The AXE gene has an 864-bp open reading frame that encodes 287 aa and consists of an AXE domain from aa 60 to 274. Gene was cloned to pET-16b vector and expressed the recombinant AXE (rAXE) in Escherichia coli BL21 (DE3). The predicted molecular mass was 31.75 kDa. The maximum specific activity (40.08 U/mg) was recorded at the optimal temperature and pH which were 50 °C and pH 8.0, respectively. The thermal stability assay showed that AXE maintains its residual activity almost constantly throughout and after incubation at 45 °C for 120 min. The synergism of AXE with xylanase on beechwood xylan, increased the relative activity 1.41-fold. CONCLUSION Resulted higher relative activity of rAXE with commercially available xylanase on beechwood xylan showed its potential for the use of rAXE in industrial purposes as a de-esterification enzyme to hydrolyze xylan and hemicellulose-like complex substrates.
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Affiliation(s)
- Sachithra Amarin Hettiarachchi
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea.,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea.,Department of Fisheries and Aquaculture, Faculty of Fisheries and Marine Sciences & Technology, University of Ruhuna, Matara, Sri Lanka
| | - Young-Kyung Kwon
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea
| | - Youngdeuk Lee
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea
| | - Eunyoung Jo
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea
| | - Tae-Yang Eom
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea.,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Yoon-Hyeok Kang
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea.,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Do-Hyung Kang
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea.,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Svini Dileepa Marasinghe
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea.,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Chulhong Oh
- Korea Institute of Ocean Science & Technology, 2670, Iljudong-ro, Gujwa-eup, Jeju, Republic of Korea. .,Department of Ocean Science, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea.
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Lee DW, Kim SJ, Shin NY, Lee WJ, Lee D, Jang JH, Choi SH, Kang DH. Sleeping, sleeping environments, and human errors in South Korean male train drivers. J Occup Health 2019; 61:358-367. [PMID: 31050123 PMCID: PMC6718836 DOI: 10.1002/1348-9585.12059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/06/2019] [Accepted: 04/04/2019] [Indexed: 11/17/2022] Open
Abstract
Objectives Reducing human errors caused by daytime sleepiness among train drivers is important to prevent train accidents. Our purpose of the study was to investigate the association among sleep, workplace sleeping environments, and human errors. Methods We recruited 144 South Korean train drivers belongs to the Korean Railroad Corporation. This cross‐sectional data was analyzed to investigate the association of insomnia (insomnia severity index), sleep quality (Pittsburgh sleep quality index), obstructive sleep apnea (Berlin questionnaire), and daytime sleepiness (Epworth scale) with human error and near‐miss experiences. We examined whether human error and near‐miss events were associated with various sleeping environments at work and at home after adjusting for the sleep indices. Results The experience of human errors was associated with insomnia and daytime sleepiness, and near‐miss events were associated with insomnia among South Korean drivers. Sleeping environments including cold temperature and odor were related to both human errors and near‐miss events among South Korean train drivers, after adjusted for age, working years, shiftwork, obesity, smoking, binge drinking, regular exercise, caffeine consumption, sleep quality, severity of insomnia, obstructive sleep apnea, and daytime sleepiness. Conclusions The train drivers’ workplace sleeping environment is significantly associated with human error events and near‐miss events after adjusting for sleep quality, insomnia, obstructive sleep apnea, and daytime sleepiness. To prevent train accidents caused by human errors, more attention is necessary for improving workplace sleeping environments.
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Affiliation(s)
- Dong-Wook Lee
- Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Seog Ju Kim
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Na Young Shin
- College of Liberal Arts and Interdisciplinary Studies, Kyonggi University, Suwon, Republic of Korea
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
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Abstract
BACKGROUND Hypertension and type 2 diabetes are chronic diseases, which generally require lifetime care. Meditation and yoga can be complementary to pharmacological therapies according to the scientific evidences so far. Brain education-based meditation (BEM) is a technique, which has been known to change brain structure, psychology, and physiology of healthy adult participants. This randomized, nonblinded pilot trial aimed to examine whether BEM affects the conditions of patients with hypertension and/or type 2 diabetes compared with health education classes. METHODS We randomly allocated 48 patients with hypertension and/or type 2 diabetes to BEM (n = 24) or health education (n = 24) classes in the Ulsan Junggu Public Health Center in Korea, where the classes were run during the same period and explored the impact of 8-week practice on the serum glutamic-oxaloacetic transaminase, serum glutamic pyruvic transaminase, gamma glutamyl transpeptidase, creatinine, high-density lipoprotein cholesterol, and low-density lipoprotein (LDL) cholesterol. Total RNA was extracted to examine inflammatory gene expressions from the whole blood using PAXgene blood RNA System. In addition, self-reports on mental/physical health were evaluated. The Student's t test, chi-squared test, and analysis of covariance were used for statistical analysis. RESULTS The number of people who participated until the completion of the study was 14 in the control and 21 in the BEM group. After 8 weeks, LDL cholesterol level was significantly decreased in the BEM group after the intervention (13.82 mg/dL reduction, P < .05), while it was not significantly altered in the control group. The expression of inflammatory genes was significantly reduced after 8 weeks of the BEM training (0.3-, 0.5-, and 0.2-fold change for NFKB2, RELA, and IL1B, respectively, all P < .05). In the item analysis of mental/physical health self-reports, a significant improvement was confirmed as follows: increases in focus, confidence, relaxation, and happiness; decreases in fatigue, anger, and loneliness (all P < .05). There were no important adverse events or side-effects by BEM intervention. CONCLUSION Compared to health education, BEM helps lower LDL cholesterol level and the inflammatory gene expression in the patients with hypertension and/or type 2 diabetes. Moreover, BEM induces positive effects on the self-reported mental/physical states, warranting further study.
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Affiliation(s)
- Seung-Ho Lee
- Department of Brain Education
- Department of Counseling Psychology, University of Brain Education, Dongnam-gu, Cheonan-si, Chungcheongnam-do
| | | | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Dae-jeon
| | - Hyun-Jeong Yang
- Department of Brain Education
- Department of Integrative Biosciences, University of Brain Education, Dongnam-gu, Cheonan-si, Chungcheongnam-do
- Korea Institute of Brain Science, Seoul, Republic of Korea
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Jung YH, Shin NY, Jang JH, Lee WJ, Lee D, Choi Y, Choi SH, Kang DH. Relationships among stress, emotional intelligence, cognitive intelligence, and cytokines. Medicine (Baltimore) 2019; 98:e15345. [PMID: 31045776 PMCID: PMC6504531 DOI: 10.1097/md.0000000000015345] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 01/06/2023] Open
Abstract
The brain has multiple functions, and its structures are very closely related to one another. Thus, the brain areas associated with stress, emotion, and intelligence are closely connected. The purpose of this study was to investigate the multiple associations between stress and emotional intelligence (EI), between EI and intelligence quotient (IQ), between cytokines and stress, and between cytokines and IQ. We measured the stress, EI, cognitive intelligence using IQ, and cytokine levels of 70 healthy subjects. We also analyzed the association of cytokines with IQ according to hemispheric dominance using the brain preference indicator (BPI). We found significant negative correlations between stress and the components of EI, such as emotional awareness and expression, emotional thinking, and emotional regulation. High levels of anger, which is a component of stress, were significantly related to poor emotional regulation. Additionally, emotional application was positively correlated with full-scale IQ scores and scores on the vocabulary, picture arrangement, and block design subtests of the IQ test. High IL-10 levels were significantly associated with low stress levels only in the right-brain-dominant group. High IL-10 and IFN-gamma levels have been associated with high scores of arithmetic intelligence. TNF-alpha and IL-6 were negatively associated with vocabulary scores and full-scale IQ, but IL-10 and IFN-gamma were positively associated with scores on the arithmetic subtest in left-brain-dominant subjects. On the other hand, IL-10 showed positive correlations with scores for vocabulary and for vocabulary and arithmetic in right-brain-dominant subjects. Furthermore, we found significant linear regression models which can show integrative associations and contribution on emotional and cognitive intelligence. Thus, we demonstrated that cytokines, stress, and emotional and cognitive intelligence are closely connected one another related to brain structure and functions. Also, the pro-inflammatory cytokines TNF-alpha and IL-6 had negative effects, whereas the anti-inflammatory cytokines (e.g., IL-10 and IFN-gamma) showed beneficial effects, on stress levels, and multiple dimensions of emotional and cognitive intelligence. Additionally, these relationships among cytokines, stress, and emotional and cognitive intelligence differed depending on right and left hemispheric dominance.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul
| | | | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital, Seoul
- Department of Medicine, Seoul National University College of Medicine
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul
| | - Yoobin Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul
- Department of Psychiatry, Seoul National University College of Medicine and Institute of Human Behavioral Medicine, SNU-MRC
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
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Lee JY, Choi SH, Park KS, Choi YB, Jung HK, Lee D, Jang JH, Moon JY, Kang DH. Comparison of complex regional pain syndrome and fibromyalgia: Differences in beta and gamma bands on quantitative electroencephalography. Medicine (Baltimore) 2019; 98:e14452. [PMID: 30762759 PMCID: PMC6407989 DOI: 10.1097/md.0000000000014452] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Complex regional pain syndrome (CRPS) and fibromyalgia (FM) share many features. Both can cause severe pain and are considered to have a mechanism of action, including dysfunction of the sympathetic nervous system. However, they have clinical differences in pain range and degree. The present study aimed to find neurophysiologic differences between CRPS and FM using quantitative electroencephalography (QEEG). Thirty-eight patients with CRPS and 33 patients with FM were included in the analysis. Resting-state QEEG data were grouped into frontal, central, and posterior regions to analyze for regional differences. General linear models were utilized to test for group differences in absolute and relative powers. As a result, the CRPS group relative to FM group showed lower total absolute powers in the beta band (F = 5.159, P < .05), high beta (F = 14.120, P < .05), and gamma band (F = 15.034, P < .05). There were no significant differences between 2 groups in the delta, theta, and alpha bands. The present findings show that the CRPS and FM groups differ mainly in the high frequency, which may reflect their distinct pathophysiology and symptomatology. Our study suggests that the QEEG differences can be clinically useful in assessing brain function in patients with CRPS and FM.
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Affiliation(s)
- Jae-Yeon Lee
- Department of Psychiatry, Seoul National University Hospital
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital
- Department of Psychiatry and Institute of Human Behavioral Medicine in SNU-MRC
| | - Ki-Soon Park
- Department of Medicine, Seoul National University College of Medicine
| | - Yoo Bin Choi
- Department of Psychiatry, Seoul National University Hospital
| | - Hee Kyung Jung
- Department of Psychiatry, Seoul National University Hospital
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital
- Department of Medicine, Seoul National University College of Medicine
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University Hospital
- Department of Psychiatry and Institute of Human Behavioral Medicine in SNU-MRC
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Jung YH, Kim H, Lee D, Lee JY, Lee WJ, Moon JY, Kim YC, Choi SH, Kang DH. Disruption of Homeostasis Based on the Right and Left Hemisphere in Patients with Complex Regional Pain Syndrome. Neuroimmunomodulation 2019; 26:276-284. [PMID: 31865325 DOI: 10.1159/000504140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 10/14/2019] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Although the clinical features and pathophysiology of complex regional pain syndrome (CRPS) have been studied in the peripheral and central nervous systems, few plausible pathological interactions are known among the metabolites in these systems. Thus, the purpose of this study was to investigate abnormal relationships and interactions between peripheral metabolites and central neurometabolites in patients with CRPS. METHODS Various metabolites and molecules were measured in the peripheral blood, and central neurometabolites in the right and left thalamus using proton magnetic resonance spectroscopy in 12 patients with CRPS and 11 healthy controls. Interactions between peripheral metabolites in blood and central neurometabolites in the right and left thalamus were also investigated. RESULTS The interactions between peripheral and central metabolites were different in the right and left hemispheres of healthy subjects, suggesting the presence of right hemisphere-dependent energy homeostasis and left hemisphere-dependent acid-base homeostasis that enables effective functioning. The interactions between central and peripheral metabolites in CRPS patients were distinct from those in healthy individuals, supporting the possibility of abnormal interactions and disrupted homeostasis between peripheral and central metabolites, which may result from neuroinflammation and immune system dysfunction. CONCLUSION To the authors' knowledge, this is the first report describing abnormal metabolic dysfunction and disrupted homeostasis in interactions between metabolites of the peripheral and central nervous systems in CRPS. The approach used to uncover hidden pathophysiologies will improve understanding of how chronic pain can disrupt homeostasis in interactions between two systems and how alternative metabolites can be activated to recover and compensate for pathological dysfunctions in patients with CRPS.
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Affiliation(s)
- Ye-Ha Jung
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dasom Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea
| | - Jae-Yeon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University College of Medicine and Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Emotional Information and Communication Technology Association, Seoul, Republic of Korea,
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Kim EA, Kim SY, Kim J, Oh JY, Kim HS, Yoon WJ, Kang DH, Heo SJ. Tuberatolide B isolated from Sargassum macrocarpum inhibited LPS-stimulated inflammatory response via MAPKs and NF-κB signaling pathway in RAW264.7 cells and zebrafish model. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.10.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Choi SH, An SC, Lee US, Yun JY, Jang JH, Kang DH. In-Depth Relationships between Emotional Intelligence and Personality Traits in Meditation Practitioners. Clin Psychopharmacol Neurosci 2018; 16:391-397. [PMID: 30466211 PMCID: PMC6245287 DOI: 10.9758/cpn.2018.16.4.391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/02/2017] [Accepted: 05/08/2017] [Indexed: 11/30/2022]
Abstract
Objective Meditation can elicit trait-like changes in psychological and social styles, as well as enhancement of emotional regulatory capacity. We investigated the relation between personality traits and emotional intelligence in meditation practitioners. Methods Seventy-two long-term practitioners of mind-body training (MBT) and 62 healthy comparative individuals participated in the study. The participants completed emotional intelligence questionnaires and the Myers-Briggs Type Indicator (MBTI). Results The MBT group revealed higher scores on all five emotional intelligence factors than did those in the control group, such as emotional awareness and expression, empathy, emotional thinking, emotional application, and emotional regulation (all p≤0.001). MBT practitioners also had higher scores on the intuition of perceiving function (t=−2.635, p=0.010) and on the feeling of the judging function (t=−3.340, p=0.001) of the MBTI compared with those in the control group. Only the MBT group showed a robust relationship with every factor of emotional intelligence and MBTI-defined intuitive styles, indicating that higher scores of emotional intelligence were related to higher scores for intuition. Conclusion Emotional intelligence of meditation practitioners showed notable relationships with some features of personality trait. In-depth associations between emotional intelligence and personality traits would help to foster psychological functions in meditation practitioners.
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Affiliation(s)
- Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Korea
| | | | - Ul Soon Lee
- Department of Brain Education, Global Cyber University, Cheonan, Korea
| | - Je-Yeon Yun
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea.,Department of Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea.,Department of Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University Hospital, Seoul, Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Korea
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Lee D, Kang DH, Ha NH, Oh CY, Lee U, Kang SW. Effects of an Online Mind-Body Training Program on the Default Mode Network: An EEG Functional Connectivity Study. Sci Rep 2018; 8:16935. [PMID: 30446714 PMCID: PMC6240056 DOI: 10.1038/s41598-018-34947-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 10/24/2018] [Indexed: 01/22/2023] Open
Abstract
Online mind-body training (MBT) programs can improve the psychological capabilities of practitioners. Although there has been a lot of effort to understand the neural mechanisms underlying the therapeutic effects of meditation, little is known about changes in electroencephalographic (EEG) functional connectivity that accompany mind-body training. The present study aimed to investigate how an online MBT program alters EEG functional connectivity in the default mode network (DMN). We assessed a group of healthcare providers, including 14 females who participated in the 4-week MBT program and 15 females who underwent a 4-week of waiting period. EEG data and information about psychological states were obtained at baseline and 4 weeks. The result was that the intervention group showed significant reductions in anxiety and trait anger that were accompanied by increased global DMN network strengths in the theta and alpha (but not beta and delta) frequency bands; these changes were not observed in the control group. Other variables including state anger, positive and negative affect, and self-esteem have not been changed over time in both groups. These findings suggest that practicing the mind-body training could have a relevance to the functional differences in network related to stress and anxiety reaction.
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Affiliation(s)
- Dasom Lee
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Emotional Information andCommunication Technology Industrial Association, Seoul, Republic of Korea
| | - Na-Hyun Ha
- Department of Brain-based Emotion Coaching, Global Cyber University, Seoul, Republic of Korea
| | - Chang-Young Oh
- Department of Brain-based Emotion Coaching, Global Cyber University, Seoul, Republic of Korea
| | - Ulsoon Lee
- Department of Brain-based Emotion Coaching, Global Cyber University, Seoul, Republic of Korea
| | - Seung Wan Kang
- Data Center for Korean EEG, College of Nursing, Seoul National University, Seoul, Republic of Korea.
- iMediSync Inc., Seoul, Republic of Korea.
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Lee WJ, Choi SH, Shin JE, Oh CY, Ha NH, Lee US, Lee YI, Choi Y, Lee S, Jang JH, Hong YC, Kang DH. Effects of an Online Imagery-Based Treatment Program in Patients with Workplace-Related Posttraumatic Stress Disorder: A Pilot Study. Psychiatry Investig 2018; 15:1071-1078. [PMID: 30380815 PMCID: PMC6258998 DOI: 10.30773/pi.2018.09.28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/28/2018] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE We developed easily accessible imagery-based treatment program for patients with post-traumatic stress disorder (PTSD) related to workplace accidents and investigated the effects of the program on various PTSD related symptoms. METHODS The program was based on an online platform and consisted of eight 15-min sessions that included script-guided imagery and supportive music. Thirty-five patients with workplace-related PTSD participated in this program 4 days per week for 4 weeks. Its effects were examined using self-report questionnaires before and after the take-home online treatment sessions. RESULTS After completing the 4-week treatment program, patients showed significant improvements in depressed mood (t=3.642, p=0.001) based on the Patient Health Questionnaire-9 (PHQ-9), anxiety (t=3.198, p=0.003) based on the Generalized Anxiety Disorder seven-item (GAD-7) scale, and PTSD symptoms (t=5.363, p<0.001) based on the Posttraumatic Stress Disorder Check List (PCL). In particular, patients with adverse childhood experiences exhibited a greater degree of relief related to anxiety and PTSD symptoms than those without adverse childhood experiences. CONCLUSION The present. RESULTS demonstrated that the relatively short online imagery-based treatment program developed for this study had beneficial effects for patients with workplace-related PTSD.
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Affiliation(s)
- Won Joon Lee
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jung Eun Shin
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Chang Young Oh
- Department of Brain Education, Global Cyber University, Cheonan, Republic of Korea
| | - Na Hyun Ha
- Department of Brain Education, Global Cyber University, Cheonan, Republic of Korea
| | - Ul Soon Lee
- Department of Brain Education, Global Cyber University, Cheonan, Republic of Korea
| | - Yoonji Irene Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yoobin Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Saerom Lee
- Department of Occupational Health Research, Occupational Safety and Health Research Institute, Ulsan, Republic of Korea
| | - Joon Hwan Jang
- Department of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
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Jung YH, Kim H, Jeon SY, Kwon JM, Lee D, Choi SH, Kang DH. Aberrant interactions of peripheral measures and neurometabolites with lipids in complex regional pain syndrome using magnetic resonance spectroscopy: A pilot study. Mol Pain 2018; 14:1744806917751323. [PMID: 29336203 PMCID: PMC5774727 DOI: 10.1177/1744806917751323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background The aim of this study was to assess peripheral measures and central metabolites associated with lipids using magnetic resonance spectroscopy. Results Twelve patients with complex regional pain syndrome (CRPS) and 11 healthy controls participated. Using magnetic resonance spectroscopy, we measured the levels of lipid 13a (Lip13a) and lipid 09 (Lip09) relative to total creatine (tCr) levels in the right and left thalamus. We found negative correlations of Lip13a/tCr in the right thalamus with red blood cells or neutrophils, but a positive correlation between Lip13a/tCr and lymphocytes in the controls. We found negative correlations between Lip09/tCr and peripheral pH or platelets in the controls. There were positive correlations between Lip09a/tCr and myo-inositol/tCr, between Lip13a/tCr and N-acetylaspartate (NAA)/tCr, and between Lip09/tCr and NAA/tCr in healthy controls. On the other hand, there were positive correlations between Lip13a/tCr and Lip09/tCr and urine pH in CRPS patients. There were significant correlations between Lip13a/tCr or Lip09/tCr and different peripheral measures depending on the side of the thalamus (right or left) in CRPS patients. Conclusion This is the first report indicating that abnormal interactions of Lip13a and Lip09 in the thalamus with peripheral measures and central metabolites may mediate the complex pathophysiological mechanisms underlying CRPS.
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Affiliation(s)
- Ye-Ha Jung
- 1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Hyeonjin Kim
- 2 Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - So Yeon Jeon
- 1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Jeong Min Kwon
- 3 Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Dasom Lee
- 1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Soo-Hee Choi
- 1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Do-Hyung Kang
- 1 Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
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Jung YH, Kim H, Jeon SY, Kwon JM, Lee WJ, Jang JH, Lee D, Lee Y, Kang DH. Peripheral and Central Metabolites Affecting Depression, Anxiety, Suicidal Ideation, and Anger in Complex Regional Pain Syndrome Patients Using a Magnetic Resonance Spectroscopy: A Pilot Study. Psychiatry Investig 2018; 15:891-899. [PMID: 30235917 PMCID: PMC6166034 DOI: 10.30773/pi.2018.06.17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 06/17/2018] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE This study investigated peripheral and central metabolites affecting depression, anxiety, suicidal ideation, and anger in complex regional pain syndrome (CRPS) patients. METHODS Metabolite levels were determined in the right and left thalamus and insula, in 12 CRPS patients using magnetic resonance spectroscopy (MRS). RESULTS There were positive correlations between valine (Val)/tNAA (N-acetylaspartate+N-acetylaspartylglutamate) and the anxiety, and a negative correlation between glutamine (Gln)/NAA and the depression. There were positive correlations between alanine (Ala)/Gln and the depression and suicidal ideation, between glutamate (Glu)/Gln and the depression and suicidal ideation, between N-acetylaspartylglutamate (NAAG)/Gln and the depression. There was a positive correlation between Ala/NAAG and the trait anger and a negative correlation between creatine (Cr)/N-acetylaspartate (NAA) and the trait anger. There was a negative correlation between Cr/Glx (Glu+Gln) and the trait anger. High hemoglobin and alkaline phosphatase were associated with low pain levels, but CO2 and chloride showed positive correlations with pain levels in CRPS patients. Peripheral glucose, CO2 and chloride were associated with depression, anxiety, anger and suicidal ideation. CONCLUSION The specific central and peripheral metabolites were associated with psychological disorders including depression, anxiety, suicidal ideation and anger in CRPS patients, showing pathological interactions between a painful body and mind.
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Affiliation(s)
- Ye-Ha Jung
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
| | - So Yeon Jeon
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jeong Min Kwon
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Won Joon Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Joon Hwan Jang
- Department of Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Dasom Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yoonji Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
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Lee KS, Park HK, Chio YS, Lee SA, Heo R, Lee SM, Song JM, Kang DH, Song JK. P1758Clinical situations associated with inappropriately large regurgitant volume in the assessment of mitral regurgitation severity using proximal flow convergence method. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1758] [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)
- K S Lee
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - H K Park
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - Y S Chio
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - S A Lee
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - R Heo
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - S M Lee
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - J M Song
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - D H Kang
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
| | - J K Song
- Asan Medical Center, Cardiology, Seoul, Korea Republic of
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38
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Jung YH, Kim H, Jeon SY, Kwon JM, Lee WJ, Kim YC, Jang JH, Choi SH, Lee JY, Kang DH. Brain Metabolites and Peripheral Biomarkers Associated with Neuroinflammation in Complex Regional Pain Syndrome Using [11C]-(R)-PK11195 Positron Emission Tomography and Magnetic Resonance Spectroscopy: A Pilot Study. Pain Medicine 2018; 20:504-514. [DOI: 10.1093/pm/pny111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ye-Ha Jung
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - So Yeon Jeon
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Jeong Min Kwon
- Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Won Joon Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Korea
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
| | - Soo-Hee Choi
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Jun-Young Lee
- Department of Psychiatry and Behavioral Science, Seoul National University College of Medicine & SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Do-Hyung Kang
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
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Abstract
Chronic pain is defined as persistent or recurrent pain lasting longer than 3 months; the severity of pain can be rated in terms of intensity, pain-related distress, and functional impairment. Researches have shown an association between psychosocial factors, such as empathic ability, and the severity of pain. Cognitive-behavioral therapy (CBT) is the most common psychologic intervention for individuals with chronic pain. The aim of this study was to investigate the effect of CBT on empathy in chronic pain patients, examining especially gender differences. In total, 89 patients with severe chronic pain (46 men and 43 women) underwent 8 sessions of CBT over the course of 4 weeks. Self-reported clinical symptoms were measured at the beginning and end of the CBT. Empathy was measured using the interpersonal reactivity index, and pain severity was assessed using the short-form McGill pain questionnaire. A comparison of male and female patients before CBT indicated that females showed higher levels of empathy in response to affective issues and reported greater affective pain than males. A mixed analysis of variance revealed that female patients showed higher levels of empathy than did male patients, both before and after CBT. We also found significant relationships between affective pain and empathy for others' personal distress in all patients. These results suggest that the effectiveness of CBT may be affected by chronic pain patients' level of empathy. Although the evident result was not shown in this study, the present findings imply that female patients may formulate excellent therapeutic alliance in CBT intervention that can lead to a clinical benefit.
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Affiliation(s)
- Jae-A Lim
- Department of Psychiatry, Seoul National University Hospital
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital
- Department of Psychiatry, Seoul National University College of Medicine, Seoul
| | - Won Joon Lee
- Department of Psychiatry, Armed Forces Capital Hospital, Seongnam
| | - Joon Hwan Jang
- Department of Psychiatry, Seoul National University Hospital
- Department of Medicine, Seoul National University College of Medicine
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University Hospital
- Department of Psychiatry, Seoul National University College of Medicine, Seoul
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40
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Park SH, Kim WJ, Kang DH. Effect of relative humidity on inactivation of foodborne pathogens using chlorine dioxide gas and its residues on tomatoes. Lett Appl Microbiol 2018; 67:154-160. [PMID: 29719930 DOI: 10.1111/lam.13002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/27/2018] [Accepted: 04/22/2018] [Indexed: 11/26/2022]
Abstract
The effect of relative humidity (RH) on the antimicrobial efficacy of chlorine dioxide (ClO2 ) gas against foodborne pathogens on tomatoes was evaluated. Also, levels of ClO2 residues on tomatoes after exposure to ClO2 gas under different RH conditions were measured to determine the quantity of solubilized ClO2 gas on tomato surfaces. Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes were inoculated on tomatoes and exposed to ClO2 gas (5, 10, 20 and 30 ppmv) under different RH conditions (50, 70 and 90%). As ClO2 gas concentration and treatment time increased, significant differences (P < 0·05) were observed between inactivation levels under different RH conditions. Exposure to 30 ppmv of ClO2 gas (50% RH) for 20 min resulted in 1·22-1·52 log reductions of the three foodborne pathogens. Levels of the three foodborne pathogens were reduced to below the detection limit (0·48 log CFU per cm2 ) within 15 min when exposed to 30 ppmv of ClO2 gas at 70% RH and within 10 min at 90% RH. At a given ClO2 gas concentration, ClO2 residues on tomatoes significantly (P < 0·05) increased with increasing RH, and there were close correlations between log reductions of pathogens and ClO2 residues on tomatoes. SIGNIFICANCE AND IMPACT OF THE STUDY This study reported on the correlation between the amount of ClO2 residues on produce surfaces and the level of inactivation of pathogens after ClO2 gas treatment. Variations in RH have great effect on the solubilization of ClO2 gas on tomato surfaces considering that ClO2 residues on tomatoes increased with increasing RH. Also, the amount of ClO2 residues on tomatoes is positively correlated with the level of inactivation of pathogens. The results of this study provide insights for predicting inactivation patterns of foodborne pathogens by ClO2 gas for practical application by the fresh produce industry.
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Affiliation(s)
- S H Park
- Department of Food and Animal Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - W J Kim
- Department of Food and Animal Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - D H Kang
- Department of Food and Animal Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
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41
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Lee Y, Jo E, Lee YJ, Hettiarachchi SA, Park GH, Lee SJ, Heo SJ, Kang DH, Oh C. A Novel Glycosyl Hydrolase Family 16 ��-Agarase from the Agar- Utilizing Marine Bacterium Gilvimarinus agarilyticus JEA5: the First Molecular and Biochemical Characterization of Agarase in Genus Gilvimarinus. J Microbiol Biotechnol 2018; 28:776-783. [DOI: 10.4014/jmb.1709.09050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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42
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Nguyen VT, Ko SC, Heo SJ, Kang DH, Oh C, Kim KN, Jeon YJ, Kim YM, Park WS, Choi IW, Park NG, Jung WK. Ciona intestinalis calcitonin-like peptide promotes osteoblast differentiation and mineralization through MAPK pathway in MC3T3-E1 cells. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.01.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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43
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Lee SJ, Choi WS, Park GH, Kim TH, Oh C, Heo SJ, Kang DH. Flocculation Effect of Alkaline Electrolyzed Water (AEW) on Harvesting of Marine Microalga Tetraselmis sp. J Microbiol Biotechnol 2018; 28:432-438. [DOI: 10.4014/jmb.1709.09040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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44
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Song MK, Choi SH, Lee DH, Lee KJ, Lee WJ, Kang DH. Effects of Cognitive-Behavioral Therapy on Empathy in Patients with Chronic Pain. Psychiatry Investig 2018; 15:285-291. [PMID: 29486544 PMCID: PMC5900372 DOI: 10.30773/pi.2017.07.03] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/05/2017] [Accepted: 07/03/2017] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Cognitive-behavioral therapy (CBT) is effective in patients with chronic pain. However, the efficacy of CBT for impaired empathy has not been studied in this population. We investigated the effect of CBT on empathy in patients with chronic pain. METHODS Patients with severe chronic pain were recruited. Empathy was assessed before and after CBT using the Interpersonal Reactivity Index (IRI). The patients underwent eight sessions over the course of 1 month conducted. Additional symptoms were assessed using the Short-Form McGill Pain Questionnaire (SF-MPQ), Beck Depression Inventory, Beck Anxiety Inventory, World Health Organization Quality of Life Scale Abbreviated Version, and the Scale for Suicide Ideation. RESULTS A total of 26 participants were included. Pre-CBT pain severity assessed using the SF-MPQ was significantly correlated with the IRI-empathic concern subscale score (p=0.021), and the relationship remained significant after adjusting for sex, age, education level, and marital status. After CBT, the IRI-perspective-taking subscale scores (p=0.004) increased significantly and the IRI-personal distress subscale scores (p=0.013) decreased significantly in all participants. The SF-MPQ scores increased significantly (p=0.021). CONCLUSION CBT improved empathy in patients with chronic pain independent of its effect on pain, suggesting that CBT is useful for improving interpersonal relationships in patients with chronic pain.
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Affiliation(s)
- Man-Kyu Song
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Do-Hyeong Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kyung-Jun Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Won Joon Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Do-Hyung Kang
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
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45
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Hettiarachchi SA, Lee SJ, Lee Y, Kwon YK, Kwon KK, Yang SH, Jo E, Kang DH, Oh C. Corallibacterium pacifica gen. nov., sp. nov., a Novel Bacterium of the Family Vibrionaceae Isolated from Hard Coral. Curr Microbiol 2018; 75:835-841. [PMID: 29464363 DOI: 10.1007/s00284-018-1455-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 02/13/2018] [Indexed: 12/19/2022]
Abstract
A gram-negative, rod-shaped, motile, oxidase- and catalase-positive, non-pigmented marine bacterium, designated strain OS-11M-2T, was isolated from a coral sample collected from the Osakura coastal area in Micronesia. Phylogenetic analysis based on 16S ribosomal RNA (rRNA) gene sequences indicated that strain OS-11M-2T is a member of the family Vibrionaceae, its closest neighbors being Photobacterium damselae subsp. piscicida NCIMB 2058T (94.9%), Photobacterium damselae subsp. damselae CIP 102761T (94.75%), Grimontia marina IMCC5001T (94.5%), Enterovibrio coralii LMG 22228T (94.5%), and Grimontia celer 96-237T (94.5%). The major cellular fatty acids were summed feature 3 (21.4%), summed feature 8 (18.5%), iso-C16:0 (13.8%), and C16:0 (11.9%). The major respiratory quinone of the bacterium was ubiquinone-8 (Q-8) and its major polar lipid phosphatidylethanolamine. Six amino lipids, two phospholipids, and one polar lipid, all unidentified, were detected. The DNA G+C content was 49.7 mol%. The 16S rRNA gene sequence of OS-11M-2T was registered in GenBank under accession number MF359550. On the basis of phenotypic, genotypic, and phylogenetic analyses, strain OS-11M-2T represents a novel genus of the family Vibrionaceae, for which we propose the name Corallibacterium pacifica gen. nov., sp. nov., with the type strain of the type species being OS-11M-2T (= KCCM 43265T). The digital protologue database (DPD) taxon number for strain OS-11M-2T is GA00041.
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Affiliation(s)
- Sachithra Amarin Hettiarachchi
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Su-Jin Lee
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Youngdeuk Lee
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Young-Kyung Kwon
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Kae Kyoung Kwon
- Korea Institute of Ocean Science & Technology, Busan, 49111, Republic of Korea
| | - Sung-Hyun Yang
- Korea Institute of Ocean Science & Technology, Busan, 49111, Republic of Korea
| | - Eunyoung Jo
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Do-Hyung Kang
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju, Jeju Province, 63349, Republic of Korea
| | - Chulhong Oh
- Korea Institute of Ocean Science & Technology, Jeju, Jeju Province, 63349, Republic of Korea. .,Department of Marine Biology, Korea University of Science and Technology, Jeju, Jeju Province, 63349, Republic of Korea.
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46
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Hettiarachchi S, Lee SJ, Lee Y, Kwon YK, De Zoysa M, Moon S, Jo E, Kim T, Kang DH, Heo SJ, Oh C. A Rapid and Efficient Screening Method for Antibacterial Compound-Producing Bacteria. J Microbiol Biotechnol 2018. [PMID: 28621106 DOI: 10.4014/jmb.1703.03012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Antibacterial compounds are widely used in the treatment of human and animal diseases. The overuse of antibiotics has led to a rapid rise in the prevalence of drug-resistant bacteria, making the development of new antibacterial compounds essential. This study focused on developing a fast and easy method for identifying marine bacteria that produce antibiotic compounds. Eight randomly selected marine target bacterial species (Agrococcus terreus, Bacillus algicola, Mesoflavibacter zeaxanthinifaciens, Pseudoalteromonas flavipulchra, P. peptidolytica, P. piscicida, P. rubra, and Zunongwangia atlantica) were tested for production of antibacterial compounds against four strains of test bacteria (B. cereus, B. subtilis, Halomonas smyrnensis, and Vibrio alginolyticus). Colony picking was used as the primary screening method. Clear zones were observed around colonies of P. flavipulchra, P. peptidolytica, P. piscicida, and P. rubra tested against B. cereus, B. subtilis, and H. smyrnensis. The efficiency of colony scraping and broth culture methods for antimicrobial compound extraction was also compared using a disk diffusion assay. P. peptidolytica, P. piscicida, and P. rubra showed antagonistic activity against H. smyrnensis, B. cereus, and B. subtilis, respectively, only in the colony scraping method. Our results show that colony picking and colony scraping are effective, quick, and easy methods of screening for antibacterial compound-producing bacteria.
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Affiliation(s)
- Sachithra Hettiarachchi
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Su-Jin Lee
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Youngdeuk Lee
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Young-Kyung Kwon
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Song Moon
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Eunyoung Jo
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Taeho Kim
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Do-Hyung Kang
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Soo-Jin Heo
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
| | - Chulhong Oh
- Korea Institute of Ocean Science & Technology, Jeju Special Self-Governing Province 63349, Republic of Korea.,Department of Marine Biology, Korea University of Science and Technology, Jeju Special Self-Governing Province 63349, Republic of Korea
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47
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Qian ZJ, Ryu B, Kang KH, Heo SJ, Kang DH, Bae SY, Park SJ, Kim JI, Kim YM, Kim YT, Jung WK. Cellular properties of the fermented microalgae Pavlova lutheri and its isolated active peptide in osteoblastic differentiation of MG‑63 cells. Mol Med Rep 2017; 17:2044-2050. [PMID: 29257215 DOI: 10.3892/mmr.2017.8087] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 11/07/2017] [Indexed: 11/06/2022] Open
Abstract
Fermented microalgae Pavlova lutheri (P. lutheri), the product of Hansenula polymorpha fermentation, exhibited an increase in alkaline phosphatase (ALP) activity in MG‑63 osteoblastic cells when compared to that of non‑fermented P. lutheri. Fractionation of the fermented P. lutheri resulted in identification of the active peptide [peptide of P. lutheri fermentation (PPLF)] with the sequence of EPQWFL. PPLF significantly increased ALP release from MG‑63 cells and mineralization in a dose‑dependent manner. In addition, the intracellular levels of ALP and osteocalcin (OCN) proteins were augmented by PPLF treatment. To identify the molecular mechanism underlying the effect of PPLF on osteoblastic differentiation, the phosphorylation levels of the mitogen‑activated protein kinases, p38, extracellular signal‑regulated kinases 1/2 and Jun, and nuclear factor (NF)‑κB were determined following PPLF treatment and the differences in expression were analyzed using p38 and NF‑κB selective inhibitors. These results concluded that PPLF from fermented P. lutheri induced osteoblastic differentiation by increasing ALP and OCN release in MG‑63 cells via the p38/p65 signaling pathway, indicating that PPLF supplement may be effective for therapeutic application in the field of bone health.
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Affiliation(s)
- Zhong-Ji Qian
- Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, P.R. China
| | - Bomi Ryu
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kyong-Hwa Kang
- Marine Bioprocess Research Center, Pukyong National University, Busan 48513, Republic of Korea
| | - Soo-Jin Heo
- Jeju International Marine Science Center for Research and Education, Korea Institute of Ocean Science and Technology, Jeju 63349, Republic of Korea
| | - Do-Hyung Kang
- Jeju International Marine Science Center for Research and Education, Korea Institute of Ocean Science and Technology, Jeju 63349, Republic of Korea
| | - Sung Yong Bae
- Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Sun-Joo Park
- Department of Chemistry, Pukyong National University, Busan 48513, Republic of Korea
| | - Jae-Il Kim
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Republic of Korea
| | - Young-Mog Kim
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Yong-Tae Kim
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan, North Jeolla 573‑701, Republic of Korea
| | - Won-Kyo Jung
- Department of Biomedical Engineering, and Center for Marine‑Integrated Biomedical Technology (BK21 Plus) and Marine‑Integrated Bionics Research Center, Pukyong National University, Busan 48513, Republic of Korea
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48
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Koh EJ, Kim KJ, Song JH, Choi J, Lee HY, Kang DH, Heo HJ, Lee BY. Spirulina maxima Extract Ameliorates Learning and Memory Impairments via Inhibiting GSK-3β Phosphorylation Induced by Intracerebroventricular Injection of Amyloid-β 1-42 in Mice. Int J Mol Sci 2017; 18:ijms18112401. [PMID: 29137190 PMCID: PMC5713369 DOI: 10.3390/ijms18112401] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 10/10/2017] [Revised: 11/09/2017] [Accepted: 11/09/2017] [Indexed: 11/16/2022] Open
Abstract
Spirulina maxima, a microalga containing high levels of protein and many polyphenols, including chlorophyll a and C-phycocyanin, has antioxidant and anti-inflammatory therapeutic effects. However, the mechanisms where by Spirulina maxima ameliorates cognitive disorders induced by amyloid-β 1–42 (Aβ1–42) are not fully understood. In this study, we investigated whether a 70% ethanol extract of Spirulina maxima (SM70EE) ameliorated cognitive impairments induced by an intracerebroventricular injection of Aβ1–42 in mice. SM70EE increased the step-through latency time in the passive avoidance test and decreased the escape latency time in the Morris water maze test in Aβ1–42-injected mice. SM70EE reduced hippocampal Aβ1–42 levels and inhibited amyloid precursor protein processing-associated factors in Aβ1–42-injected mice. Additionally, acetylcholinesterase activity was suppressed by SM70EE in Aβ1–42-injected mice. Hippocampal glutathione levels were examined to determine the effects of SM70EE on oxidative stress in Aβ1–42-injected mice. SM70EE increased the levels of glutathione and its associated factors that were reduced in Aβ1–42-injected mice. SM70EE also promoted activation of the brain-derived neurotrophic factor/phosphatidylinositol-3 kinase/serine/threonine protein kinase signaling pathway and inhibited glycogen synthase kinase-3β phosphorylation. These findings suggested that SM70EE ameliorated Aβ1–42-induced cognitive impairments by inhibiting the increased phosphorylation of glycogen synthase kinase-3β caused by intracerebroventricular injection of Aβ1–42 in mice.
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Affiliation(s)
- Eun-Jeong Koh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyonggi 13488, Korea.
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyonggi 13488, Korea.
| | - Ji-Hyeon Song
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyonggi 13488, Korea.
| | - Jia Choi
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyonggi 13488, Korea.
| | - Hyeon Yong Lee
- Department of Food Science and Engineering, Seowon University, Cheongju 28674, Korea.
| | - Do-Hyung Kang
- Jeju International Marine Science Center for Research & Education, Korea Institute of Ocean Science & Technology (KIOST), Jeju 63349, Korea.
| | - Ho Jin Heo
- Division of Applied Life Science, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea.
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyonggi 13488, Korea.
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49
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Park HH, Ko SC, Oh GW, Heo SJ, Kang DH, Bae SY, Jung WK. Fabrication and characterization of phlorotannins/poly (vinyl alcohol) hydrogel for wound healing application. Journal of Biomaterials Science, Polymer Edition 2017; 29:972-983. [DOI: 10.1080/09205063.2017.1374030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hyeon-Ho Park
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, Republic of Korea
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
| | - Seok-Chun Ko
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
| | - Gun-Woo Oh
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, Republic of Korea
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
| | - Soo-Jin Heo
- Jeju International Marine Science Center for Research & Education, Korea Institute of Ocean Science & Technology, Jeju, Republic of Korea
| | - Do-Hyung Kang
- Jeju International Marine Science Center for Research & Education, Korea Institute of Ocean Science & Technology, Jeju, Republic of Korea
| | - Sung-Yong Bae
- Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan, Republic of Korea
| | - Won-Kyo Jung
- Department of Biomedical Engineering, and Center for Marine-Integrated Biomedical Technology (BK21 Plus), Pukyong National University, Busan, Republic of Korea
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan, Republic of Korea
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Lee WJ, Choi SH, Jang JH, Moon JY, Kim YC, Noh E, Shin JE, Shin H, Kang DH. Different patterns in mental rotation of facial expressions in complex regional pain syndrome patients. Medicine (Baltimore) 2017; 96:e7990. [PMID: 28953620 PMCID: PMC5626263 DOI: 10.1097/md.0000000000007990] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Although facial pain expressions are considered to be the most visible pain behaviors, it is known that the association between pain intensity and facial pain expression is weak for chronic pain. The authors hypothesized that the facial pain expressiveness was altered in chronic pain and investigated it with a mental rotation task using various facial expression, which seems to be associated with actual facial movements. As a task stimulus, 4 types of facial expression stimuli consisted of upper (tightening of eye and furrowed brows) and lower (raising upper lip) pain-specific facial expressions, and upper (eyeball deviation) and lower (tongue protrusion) facial movements not using facial muscles were used. Participants were asked to judge whether a stimulus presented at various rotation angles was left- or right-sided. The authors tested 40 patients with complex regional pain syndrome (CRPS) (12 women, age range 21-60) and 35 healthy controls (15 women, age range 26-64). In an analysis of reaction time (RT) using a linear mixed model, patients were slower to react to all types of stimuli (P = .001) and a significant interaction between group (patient or control) and type of facial expression was observed (P = .01). In the post hoc analysis only patients showed longer RTs to raising upper lip than other types of facial expressions. This reflects a deficit in mental rotation tasks especially for lower facial region pain expressions in CRPS, which may be related to the psychosocial aspects of pain. However, comprehensive intra- and interpersonal influences should be further investigated.
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Affiliation(s)
- Won Joon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul
- Department of Psychiatry, Armed Forces Capital Hospital, Seongnam
| | - Soo-Hee Choi
- Department of Psychiatry, Seoul National University Hospital, Seoul
- Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine
| | - Joon Hwan Jang
- Department of Medicine, Seoul National University College of Medicine
| | - Jee Youn Moon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital
| | - EunChung Noh
- Interdisciplinary Program of Neuroscience, Seoul National University, Seoul
| | - Jung Eun Shin
- Department of Psychiatry, Seoul National University Hospital, Seoul
| | - HyunSoon Shin
- Electronics and Telecommunications Research Institute, Daejeon, Republic of Korea
| | - Do-Hyung Kang
- Department of Psychiatry, Seoul National University Hospital, Seoul
- Department of Psychiatry and Institute of Human Behavioral Sciences, Seoul National University College of Medicine
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