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Park YG, Jo JH, Lee JK, Kim JM, Lee SJ, Kim HY. Biomechanical comparison of bone staple fixation methods with suture material for median sternotomy closure using 3D-printed bone models. N Z Vet J 2024:1-10. [PMID: 38777331 DOI: 10.1080/00480169.2024.2350432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/21/2024] [Indexed: 05/25/2024]
Abstract
AIM To compare the biomechanical properties of three different sternal closure techniques in a 3D-printed bone model of a sternum from a 30-kg dog. METHODS Median sternotomy was performed on a total of 90 three-dimensional (3D) copies of a polycarbonate (PC) model of a sternum, generated from the CT images of the sternum of a 30-kg German Shepherd dog. Three different methods were used to repair the sternotomies: polydioxanone suture (group PDS, n = 30), stainless steel bone staples (group SS, n = 30), and nitinol bone staples (group NS, n = 30). Each repair method was tested by applying tensile force in one of three ways (longitudinally, laterally, or torsionally) resulting in a sample size of n = 10 for each repair method-loading combination. In all experiments, the loads at 1-mm and 2-mm gap formation, failure, and the displacement at the failure point were measured. RESULTS In lateral distraction and longitudinal shear tests, NS and SS staple repairs required application of significantly greater force than PDS across all displacement criteria (1 and 2 mm). NS exhibited significantly greater failure load than PDS. In torsion tests, NS required significantly greater application of force compared to SS or PDS at all displacement criteria (1 and 2 mm) and exhibited a greater failure load than PDS. In terms of displacement at failure point, PDS suture showed more displacement than SS or NS across all experiments (laterally, longitudinally, torsionally). CONCLUSIONS In this study, bone staples were mechanically superior to PDS suture in median sternotomy closure using 3D-printed bone model in terms of 1-mm, 2-mm displacement loads, and displacement at failure. NS had a higher failure load than PDS under lateral, longitudinal, and torsional distraction. CLINICAL RELEVANCE These study results imply that bone staples can be considered as an alternative surgical method for median sternotomy closure in dogs.
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Affiliation(s)
- Y G Park
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - J H Jo
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - J K Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - J M Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - S J Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - H Y Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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Kang JY, Song HY, Kim JM. Agarolytic Pathway in the Newly Isolated Aquimarina sp. Bacterial Strain ERC-38 and Characterization of a Putative β-agarase. Mar Biotechnol (NY) 2023; 25:314-327. [PMID: 37002465 PMCID: PMC10163077 DOI: 10.1007/s10126-023-10206-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/19/2023] [Indexed: 05/06/2023]
Abstract
Marine microbes, particularly Bacteroidetes, are a rich source of enzymes that can degrade diverse marine polysaccharides. Aquimarina sp. ERC-38, which belongs to the Bacteroidetes phylum, was isolated from seawater in South Korea. It showed agar-degrading activity and required an additional carbon source for growth on marine broth 2216. Here, the genome of the strain was sequenced to understand its agar degradation mechanism, and 3615 protein-coding sequences were predicted, which were assigned putative functions according to their annotated functional feature categories. In silico genome analysis revealed that the ERC-38 strain has several carrageenan-degrading enzymes but could not degrade carrageenan because it lacked genes encoding κ-carrageenanase and S1_19A type sulfatase. Moreover, the strain possesses multiple genes predicted to encode enzymes involved in agarose degradation, which are located in a polysaccharide utilization locus. Among the enzymes, Aq1840, which is closest to ZgAgaC within the glycoside hydrolase 16 family, was characterized using a recombinant enzyme expressed in Escherichia coli BL21 (DE3) cells. An enzyme assay revealed that recombinant Aq1840 mainly converts agarose to NA4. Moreover, recombinant Aq1840 could weakly hydrolyze A5 into A3 and NA2. These results showed that Aq1840 is involved in at least the initial agar degradation step prior to the metabolic pathway that uses agarose as a carbon source for growth of the strain. Thus, this enzyme can be applied to development and manufacturing industry for prebiotic and antioxidant food additive. Furthermore, our genome sequence analysis revealed that the strain is a potential resource for research on marine polysaccharide degradation mechanisms and carbon cycling.
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Affiliation(s)
- Ji Young Kang
- Industrial Microbiology and Bioprocess Research Center, Korea Research, Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup, Jeonbuk, 56212, Republic of Korea.
| | - Ha-Yeon Song
- Department of Life and Environmental Sciences, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Jeonbuk, 54538, Republic of Korea
| | - Jung-Mi Kim
- Department of Life and Environmental Sciences, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Jeonbuk, 54538, Republic of Korea.
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Park HY, Kim CE, Lee SM, Ahn JM, Yoon EH, Yoo M, Kim JM, Back J, Park DH, Jang WH, Kwon B, Seo SK. Priming Mesenchymal Stem/Stromal Cells with a Combination of a Low Dose of IFN-γ and Bortezomib Results in Potent Suppression of Pathogenic Th17 Immunity Through the IDO1-AHR Axis. Stem Cells 2023; 41:64-76. [PMID: 36242771 DOI: 10.1093/stmcls/sxac075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 08/26/2022] [Indexed: 02/02/2023]
Abstract
Preconditioning of mesenchymal stem/stromal cells (MSCs) with the inflammatory cytokine IFN-γ enhances not only their immunosuppressive activity but also their expression of HLA and proinflammatory genes. We hypothesized that prevention of the upregulation of inflammatory cytokines and HLA molecules in IFN-γ-primed MSCs would render these cells more immunosuppressive and less immunogenic. In this study, we discovered the following findings supporting this hypothesis: (1) activated human T cells induced the expression of IDO1 in MSCs via IFN-γ secretion and those MSCs in turn inhibited T-cell proliferation in an AHR-dependent fashion; (2) there was no difference in the expression of IDO1 and HLA-DR in MSCs after priming with a low dose (25 IU/mL) versus a high dose (100 IU/mL) of IFN-γ; (3) the transient addition of bortezomib, a proteasome inhibitor, to culture MSCs after IFN-γ priming decreased the expression of HLA-DR, inflammatory cytokine genes and Vcam1 while increasing the expression of IDO1 and the production of L-kynurenine; finally, MSCs primed with a combination of a low dose of IFN-γ and bortezomib were more effective in inhibiting Th17-mediated idiopathic pneumonia syndrome (IPS) and chronic colitis than unprimed MSCs. Our results suggest that bortezomib significantly eliminates the unfavorable effects of IFN-γ priming of MSCs (increased expression of MHC molecules and inflammatory cytokines and cell aggregation genes) and simultaneously increases their immunosuppressive activity by upregulating IDO1. Taken together, our newly established MSC priming method may contribute to MSC-based cell therapy for inflammatory diseases.
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Affiliation(s)
- Ha Young Park
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
| | - Chae Eun Kim
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
| | - Soung-Min Lee
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
| | - Joo Mi Ahn
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
| | - Eun Hye Yoon
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
| | - Minjoo Yoo
- Cell Therapy Research Center, GC Cell, Gyeonggi-do, Republic of Korea
| | - Jung-Mi Kim
- Cell Therapy Research Center, GC Cell, Gyeonggi-do, Republic of Korea
| | - Jiyeon Back
- School of Biological Sciences, University of Ulsan, Ulsan, Republic of Korea
| | - Dae Hwi Park
- Cell Therapy Research Center, GC Cell, Gyeonggi-do, Republic of Korea
| | - Won Hee Jang
- Department of Biochemistry, College of Medicine Inje University, Busan, Republic of Korea
| | - Byungsuk Kwon
- School of Biological Sciences, University of Ulsan, Ulsan, Republic of Korea
| | - Su-Kil Seo
- Department of Microbiology and Immunology, College of Medicine Inje University, Busan, Republic of Korea
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Lim C, Lim B, Kil DY, Kim JM. Hepatic transcriptome profiling according to growth rate reveals acclimation in metabolic regulatory mechanisms to cyclic heat stress in broiler chickens. Poult Sci 2022; 101:102167. [PMID: 36257074 PMCID: PMC9579409 DOI: 10.1016/j.psj.2022.102167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 07/17/2022] [Accepted: 08/24/2022] [Indexed: 11/15/2022] Open
Abstract
Climate change has numerous effects on poultry that result in welfare concerns and economic losses in agricultural industries. However, the mechanisms underlying the acclimation to heat stress in poultry have not been comprehensively defined. Therefore, identifying associated patterns of gene regulation and understanding the molecular mechanisms of acclimation to a warmer environment will provide insights into the acclimation system of broiler chickens. We profiled differentially expressed genes (DEGs) associated with differences in growth performance under heat stress conditions in the liver tissues of broilers based on RNA sequencing data. The DEGs were identified by comparison to the gene expression levels of broilers exhibiting average growth at 28 d of age (D28A) and D36A relative to those at D21A. In D36A, 507 and 312 DEGs were up- and downregulated, respectively, whereas 400 and 156 DEGs were up- and downregulated in D28A, respectively. Pathway enrichment analysis further revealed that “fatty acid degradation” and “heat shock protein expression” were upregulated in broilers exhibiting a higher growth and weight, whereas “cell cycle arrest” and “amino acid metabolism” were downregulated. Transcriptome profiling revealed that the acclimatized group supplied fat and energy from the liver to tissues through the breakdown of fatty acids. Furthermore, homeostasis was maintained via heat shock proteins and antioxidant enzymes. The characterized candidate genes and mechanisms associated with the response to heat stress might serve as a foundation for improving the ability of broilers to acclimatize under heat stress conditions.
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Affiliation(s)
- C Lim
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 17546, Republic of Korea
| | - B Lim
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 17546, Republic of Korea
| | - D Y Kil
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 17546, Republic of Korea
| | - J M Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 17546, Republic of Korea.
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Shinde KP, Lee EJ, Manawan M, Lee A, Park SY, Jo Y, Ku K, Kim JM, Park JS. Structural, magnetic, and magnetocaloric properties of R 2NiMnO 6 (R = Eu, Gd, Tb). Sci Rep 2021; 11:20206. [PMID: 34642433 PMCID: PMC8511262 DOI: 10.1038/s41598-021-99755-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/27/2021] [Indexed: 11/09/2022] Open
Abstract
The crystal structure, cryogenic magnetic properties, and magnetocaloric performance of double perovskite Eu2NiMnO6 (ENMO), Gd2NiMnO6 (GNMO), and Tb2NiMnO6 (TNMO) ceramic powder samples synthesized by solid-state method have been investigated. X-ray diffraction structural investigation reveal that all compounds crystallize in the monoclinic structure with a P21/n space group. A ferromagnetic to paramagnetic (FM-PM) second-order phase transition occurred in ENMO, GNMO, and TNMO at 143, 130, and 112 K, respectively. Maximum magnetic entropy changes and relative cooling power with a 5 T applied magnetic field are determined to be 3.2, 3.8, 3.5 J/kgK and 150, 182, 176 J/kg for the investigated samples, respectively. The change in structural, magnetic, and magnetocaloric effect attributed to the superexchange mechanism of Ni2+–O–Mn3+ and Ni2+–O–Mn4+. The various atomic sizes of Eu, Gd, and Tb affect the ratio of Mn4+/Mn3+, which is responsible for the considerable change in properties of double perovskite.
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Affiliation(s)
- K P Shinde
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, South Korea
| | - E J Lee
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, South Korea
| | - M Manawan
- Fakultas Teknologi Pertahanan, Universitas Pertahanan Indonesia, Bogor, 16810, Indonesia
| | - A Lee
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - S-Y Park
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - Y Jo
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon, 34133, South Korea
| | - K Ku
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, South Korea
| | - J M Kim
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, South Korea
| | - J S Park
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, South Korea.
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Yoo JH, Kim JM, Hong KP, Lee J, Hong ST. Journal of Korean Medical Science (JKMS): influential flagship medical journal in the Republic of Korea. Hong Kong Med J 2021; 27:242-243. [PMID: 34413253 DOI: 10.12809/hkmj215119] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- J H Yoo
- Deputy Editor, Journal of Korean Medical Science, Korea.,Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Division of Infectious Diseases, Department of Internal Medicine, Bucheon St Mary's Hospital, Bucheon, Korea
| | - J M Kim
- Deputy Editor, Journal of Korean Medical Science, Korea.,Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - K P Hong
- Deputy Editor, Journal of Korean Medical Science, Korea.,Department of Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Director of International Affairs, the Korean Academy of Medical Sciences, Korea.,Department of Radiology, Kyungpook National University Hospital, Daegu, Korea
| | - S T Hong
- Editor-in-Chief, Journal of Korean Medical Science, Korea.,Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul, Korea
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7
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Yoo M, Cho S, Shin S, Kim JM, Park HG, Cho S, Hwang YK, Park DH. Therapeutic Effect of IL1β Priming Tonsil Derived-Mesenchymal Stem Cells in Osteoporosis. Tissue Eng Regen Med 2021; 18:851-862. [PMID: 34115339 PMCID: PMC8440756 DOI: 10.1007/s13770-021-00350-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/27/2021] [Accepted: 04/30/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Stem cell therapies can be a new therapeutic strategy that may rebalance anabolic and anti-resorptive effects in osteoporosis patients. Tonsil-derived mesenchymal stem cells (TMSCs) can be an alternative therapeutic source for chronic degenerative diseases including osteoporosis. MSCs acquire immune regulatory function under the inflammatory cytokines. Since interleukin (IL) 1β is known to be one of inflammatory cytokines involved in osteoporosis progression, treatment of IL1β with TMSCs may enhance immunomodulatory function and therapeutic effects of TMSCs in osteoporosis. METHODS For IL1β priming, TMSCs were cultured in the presence of the medium containing IL1β for 1 day. Characteristics of IL1β priming TMSCs such as multipotent differentiation properties, anti-inflammatory potential, and suppression of osteoclast differentiation were assessed in vitro. For in vivo efficacy study, IL1β priming TMSCs were intravenously infused twice with ovariectomized (OVX) osteoporosis mouse model, and blood serum and bone parameters from micro computed tomography images were analyzed. RESULTS IL1β priming TMSCs had an enhanced osteogenic differentiation and secreted factors that regulate both osteoclastogenesis and osteoblastogenesis. IL1β priming TMSCs also suppressed proliferation of peripheral blood mononuclear cells (PBMCs) and decreased expression of Receptor activator of nuclear factor kappa-Β ligand (RANKL) in PHA-stimulated PBMCs. Furthermore, osteoclast specific genes such as Nuclear factor of activated T cells c1 (NFATc1) were effectively down regulated when co-cultured with IL1β priming TMSCs in RANKL induced osteoclasts. In OVX mice, IL1β priming TMSCs induced low level of serum RANKL/osteoprotegerin (OPG) ratio on the first day of the last administration. Four weeks after the last administration, bone mineral density and serum Gla-osteocalcin were increased in IL1β priming TMSC-treated OVX mice. Furthermore, bone formation and bone resorption markers that had been decreased in OVX mice with low calcium diet were recovered by infusion of IL1β priming TMSCs. CONCLUSION IL1β priming can endow constant therapeutic efficacy with TMSCs, which may contribute to improve bone density and maintain bone homeostasis in postmenopausal osteoporosis. Therefore, IL1β priming TMSCs can be a new therapeutic option for treating postmenopausal osteoporosis.
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Affiliation(s)
- Minjoo Yoo
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Sungkuk Cho
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Sunhye Shin
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Jung-Mi Kim
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Hyeon-Gyeong Park
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Sungyoo Cho
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Yu Kyeong Hwang
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea
| | - Dae Hwi Park
- Cell Therapy Research Center, Green Cross LabCell, 107, Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, 16924, South Korea.
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Rhu J, Choi GS, Kwon CHD, Kim JM, Joh JW. Learning curve of laparoscopic living donor right hepatectomy. Br J Surg 2019; 107:278-288. [DOI: 10.1002/bjs.11350] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/07/2019] [Accepted: 08/05/2019] [Indexed: 12/28/2022]
Abstract
Abstract
Background
The feasibility and learning curve of laparoscopic living donor right hepatectomy was assessed.
Methods
Donors who underwent right hepatectomy performed by a single surgeon were reviewed. Comparisons between open and laparoscopy regarding operative outcomes, including number of bile duct openings in the graft, were performed using propensity score matching.
Results
From 2014 to 2018, 103 and 96 donors underwent laparoscopic and open living donor right hepatectomy respectively, of whom 64 donors from each group were matched. Mean(s.d.) duration of operation (252·2(41·9) versus 304·4(66·5) min; P < 0·001) and median duration of hospital stay (8 versus 10 days; P = 0·002) were shorter in the laparoscopy group. There was no difference in complication rates of donors (P = 0·298) or recipients (P = 0·394) between the two groups. Total time for laparoscopy decreased linearly (R2 = 0·407, β = –0·914, P = 0·001), with the decrease starting after approximately 50 procedures when cases were divided into four quartiles (2nd versus 3rd quartile, P = 0·001; 3rd versus 4th quartile, P = 0·023). Although grafts with bile duct openings were more abundant in the laparoscopy group (P = 0·022), no difference was found in the last two quartiles (P = 0·207).
Conclusion
Laparoscopic living donor right hepatectomy is feasible and an experience of approximately 50 cases may surpass the learning curve.
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Affiliation(s)
- J Rhu
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G-S Choi
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C H D Kwon
- Department of General Surgery, Digestive Disease and Surgery Institute, Lerner College of Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - J M Kim
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
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Jeong YS, So KK, Lee JH, Kim JM, Chun GT, Chun J, Kim DH. Optimization of Growth Medium and Fermentation Conditions for the Production of Laccase3 from Cryphonectria parasitica Using Recombinant Saccharomyces cerevisiae. Mycobiology 2019; 47:512-520. [PMID: 32010473 PMCID: PMC6968546 DOI: 10.1080/12298093.2019.1661566] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 06/10/2023]
Abstract
Statistical experimental methods were used to optimize the medium for mass production of a novel laccase3 (Lac3) by recombinant Saccharomyces cerevisiae TYEGLAC3-1. The basic medium was composed of glucose, casamino acids, yeast nitrogen base without amino acids (YNB w/o AA), tryptophan, and adenine. A one-factor-at-a-time approach followed by the fractional factorial design identified galactose, glutamic acid, and ammonium sulfate, as significant carbon, nitrogen, and mineral sources, respectively. The steepest ascent method and response surface methodology (RSM) determined that the optimal medium was (g/L): galactose, 19.16; glutamic acid, 5.0; and YNB w/o AA, 10.46. In this medium, the Lac3 activity (277.04 mU/mL) was 13.5 times higher than that of the basic medium (20.50 mU/mL). The effect of temperature, pH, agitation (rpm), and aeration (vvm) was further examined in a batch fermenter. The best Lac3 activity was 1176.04 mU/mL at 25 °C, pH 3.5, 100 rpm, and 1 vvm in batch culture.
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Affiliation(s)
- Yong-Seob Jeong
- Department of Food Science and Technology, Chonbuk National University, Jeonju, Korea
| | - Kum-Kang So
- Departments of Molecular Biology and Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Korea
| | - Ju-Hee Lee
- Department of Food Science and Technology, Chonbuk National University, Jeonju, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, Korea
| | - Gie-Taek Chun
- Department of Molecular Biology, Kangwon National University, Chuncheon, Korea
| | - Jeesun Chun
- Departments of Molecular Biology and Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Korea
| | - Dae-Hyuk Kim
- Departments of Molecular Biology and Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Korea
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Lee JS, Choi SJ, Kim L, Park IS, Han JY, Kim JM, Chu YC. ALK-positive anaplastic large cell lymphoma with a monomorphic small-cell pattern masquerading as inflammatory gastric lesions. Malays J Pathol 2019; 41:213-222. [PMID: 31427559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Anaplastic lymphoma kinase-positive (ALK+) anaplastic large cell lymphoma (ALCL) with a non-common pattern can be diagnostic challenging. Pathologists can be unavoidably and unintentionally blind to non-descript tumor cells in a lymphohistiocytic- (LH) or small-cell (SC)-pattern. We report a case of primary systemic ALK+ ALCL with a SC pattern that presented as secondary gastric lesions with a mixed LH and SC pattern that was masqueraded as inflammatory lesions. CASE REPORT A 34-year-old woman with intractable epigastric pain was referred to have repeated endoscopy with biopsy. She was found to multiple gastric erosions and nodules that were diagnosed as inflammatory lesions both endoscopically and histologically. Meanwhile, she developed an acute onset of severe back pain associated with a pathologic compression fracture in the T3 thoracic vertebral body. Imaging studies disclosed a disseminated systemic disease involving abdominopelvic lymph nodes and cervical and thoracic vertebral bodies. The needle biopsy of the pelvic lymph node disclosed diffuse proliferation of monomorphic small round cells that were diffusely positive for CD30 and ALK. A diagnosis of ALK+ ALCL with a monomorphic SC pattern was rendered. DISCUSSION A retrospective review of the gastric biopsies with the aid of immunohistochemistry enabled us to recognise the presence of lymphomatous infiltrates with a mixed LH and SC pattern in every piece of gastric biopsies that were repeatedly misdiagnosed as inflammatory lesions. This case illustrates a significant diagnostic pitfall of the LH- and SC-patterns in ALK+ ALCL, in which the tumour cells featuring lymphoid, plasmacytoid or histiocytoid appearance can be masqueraded as inflammatory cells.
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Affiliation(s)
- J S Lee
- Inha University College of Medicine, Inha University Hospital, Department of Pathology, Incheon, Republic of Korea.
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Chun J, So KK, Ko YH, Kim JM, Kim DH. Comparative Transcriptomic Analysis of MAPK-Mediated Regulation of Sectorization in Cryphonectria parasitica. Mol Cells 2019; 42:363-375. [PMID: 31091557 PMCID: PMC6530638 DOI: 10.14348/molcells.2019.0019] [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] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 02/21/2019] [Indexed: 11/27/2022] Open
Abstract
Fungal sectorization is a complex trait that is still not fully understood. The unique phenotypic changes in sporadic sectorization in mutants of CpBck1, a mitogen-activated protein kinase kinase kinase (MAPKKK) gene, and CpSlt2, a mitogen-activated protein kinase (MAPK) gene, in the cell wall integrity pathway of the chestnut blight fungus Cryphonectria parasitica have been previously studied. Although several environmental and physiological factors cause this sectoring phenotype, genetic variants can also impact this complex morphogenesis. Therefore, RNA sequencing analysis was employed to identify candidate genes associated with sectorization traits and understand the genetic mechanism of this phenotype. Transcriptomic analysis of CpBck1 and CpSlt2 mutants and their sectored progeny strains revealed a number of differentially expressed genes (DEGs) related to various cellular processes. Approximately 70% of DEGs were common between the wild-type and each of CpBck1 and CpSlt2 mutants, indicating that CpBck1 and CpSlt2 are components of the same MAPK pathway, but each component governs specific sets of genes. Functional description of the DEGs between the parental mutants and their sectored progenies revealed several key pathways, including the biosynthesis of secondary metabolites, translation, amino acid metabolism, and carbohydrate metabolism; among these, pathways for secondary metabolism and translation appeared to be the most common pathway. The results of this comparative study provide a better understanding of the genetic regulation of sector formation and suggest that complex several regulatory pathways result in interplays between secondary metabolites and morphogenesis.
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Affiliation(s)
- Jeesun Chun
- Institute for Molecular Biology and Genetics, Chonbuk National University, Chonbuk 54896,
Korea
| | - Kum-Kang So
- Institute for Molecular Biology and Genetics, Chonbuk National University, Chonbuk 54896,
Korea
| | - Yo-Han Ko
- Department of Bioactive Material Sciences, Chonbuk National University, Chonbuk 54896,
Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Chonbuk 54538,
Korea
| | - Dae-Hyuk Kim
- Institute for Molecular Biology and Genetics, Chonbuk National University, Chonbuk 54896,
Korea
- Department of Bioactive Material Sciences, Chonbuk National University, Chonbuk 54896,
Korea
- Department of Molecular Biology, Chonbuk National University, Chonbuk 54896,
Korea
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Jo M, So KK, Ko YH, Chun J, Kim JM, Kim DH. Characterization of a Hypovirus-Regulated Septin Cdc11 Ortholog, CpSep1, from the Chestnut Blight Fungus Cryphonectria parasitica. Mol Plant Microbe Interact 2019; 32:286-295. [PMID: 30133338 DOI: 10.1094/mpmi-07-18-0194-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We identified a protein spot showing downregulation in the presence of Cryphonectria hypovirus 1 and tannic acid supplementation as a septin subunit with the highest homology to the Aspergillus nidulans aspA gene, an ortholog of the Saccharomyces cerevisiae Cdc11 gene. To analyze the functional role of this septin component (CpSep1), we constructed its null mutant and obtained a total of eight CpSep1-null mutants from 137 transformants. All CpSep1-null mutants showed retarded growth, with fewer aerial mycelia and intense pigmentation on plates of potato dextrose agar supplemented with L-methionine and biotin. When the marginal hyphae were examined, hyperbranching was observed in contrast to the wild type. The inhibition of colonial growth was partially recovered when the CpSep1-null mutants were cultured in the presence of the osmostabilizing sorbitol. Conidia production of the CpSep1-null mutants was significantly increased by at least 10-fold more. Interestingly, the conidial morphology of the CpSep1-null mutants changed to circular in contrast to the typical rod-shaped spores of the wild type, indicating a role of septin in the spore morphology of Cryphonectria parasitica. However, no differences in the germination process were observed. Virulence assays using excised chestnut bark, stromal pustule formation on chestnut stems, and apple inoculation indicated that the CpSep1 gene is important in pathogenicity.
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Affiliation(s)
- Myeongjin Jo
- 1 Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 54896, Korea; and
| | - Kum-Kang So
- 1 Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 54896, Korea; and
| | - Yo-Han Ko
- 1 Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 54896, Korea; and
| | - Jeesun Chun
- 1 Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 54896, Korea; and
| | - Jung-Mi Kim
- 2 Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk 54538, Korea
| | - Dae-Hyuk Kim
- 1 Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 54896, Korea; and
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13
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Lee KH, Han SH, Yong D, Paik HC, Lee JG, Kim MS, Joo DJ, Choi JS, Kim SI, Kim YS, Park MS, Kim SY, Yoon YN, Kang S, Jeong SJ, Choi JY, Song YG, Kim JM. Acquisition of Carbapenemase-Producing Enterobacteriaceae in Solid Organ Transplantation Recipients. Transplant Proc 2019; 50:3748-3755. [PMID: 30577266 DOI: 10.1016/j.transproceed.2018.01.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/23/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Carbapenemase-producing Enterobacteriaceae (CPE) can lead to life-threatening outcomes with rapid spread of the carbapenemase gene in solid organ transplantation (SOT) recipients because of limitations of available antibiotics. We examined the characteristics and importance of CPE acquisition in SOT recipients with large numbers of CPE isolates. METHODS Between November 2015 and October 2016, 584 CPE isolates were found in 37 recipients and verified by carbapenemase gene multiplex polymerase chain reaction (PCR). One hundred recipients with at least 2 negative results in carbapenemase PCR for stool surveillance and no CPE isolates in clinical samples were retrospectively included. RESULTS Most CPE isolates were Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (546, 93.5%). The most frequent transplantation organ was lung (43.3%), and the most common sample with CPE isolates other than stool was respiratory tract (22.6%). The median time between SOT and first CPE acquisition was 7 days. All-cause mortality was significantly higher in recipients with CPE than in those without CPE (24.3% vs 10.0%; P = .03). In multivariate regression analysis, stool colonization of vancomycin-resistant Enterococci and/or Clostridium difficile during 30 days before SOT (odds ratio [OR], 3.28; 95% CI, 1.24-8.68; P = .02), lung transplantation (OR, 4.50; 95% CI, 1.19-17.03; P = .03), and intensive care unit stay ≥2 weeks (OR, 6.21; 95% CI, 1.72-22.45; P = .005) were associated with acquisition of CPE. CONCLUSIONS Early posttransplantation CPE acquisition may affect the clinical outcome of SOT recipients. Careful screening for CPE during the early posttransplantation period would be meaningful in recipients with risk factors.
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Affiliation(s)
- K H Lee
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Han
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - D Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H C Paik
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J G Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - D J Joo
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J S Choi
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S I Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Park
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Y Kim
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y N Yoon
- Department of Cardiothoracic Surgery, Cardiovascular Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Kang
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S J Jeong
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J Y Choi
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y G Song
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J M Kim
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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Hwang MH, Cho KH, Jeong KJ, Park YY, Kim JM, Yu SL, Park CG, Mills GB, Lee HY. Correction: RCP induces Slug expression and cancer cell invasion by stabilizing β1 integrin. Oncogene 2019; 38:3970-3971. [PMID: 30679788 DOI: 10.1038/s41388-019-0678-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Following the publication of this article the authors noted that images were inadvertently duplicated in Fig. 1b. The corrected Fig. 1 can be found in the associated Correction. The conclusions of this paper are not affected. The authors sincerely apologize for this error. This error has not been corrected in the HTML or PDF of the original Article.
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Affiliation(s)
- M H Hwang
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - K H Cho
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - K J Jeong
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Y-Y Park
- Asan Institute for Life Sciences, Asan Medical Center, Department of Medicine, University of Ulsan College of Medicine, Seoul, Korea
| | - J M Kim
- Cancer Research Institute, Regional Cancer Center and Infection Signaling Network Research Center, Chungnam National University School of Medicine, Daejeon, Korea
| | - S-L Yu
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - C G Park
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - G B Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - H Y Lee
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea.
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Song HY, Choi D, Han DM, Kim DH, Kim JM. A Novel Rapid Fungal Promoter Analysis System Using the Phosphopantetheinyl Transferase Gene, npgA, in Aspergillus nidulans. Mycobiology 2018; 46:429-439. [PMID: 30637152 PMCID: PMC6319467 DOI: 10.1080/12298093.2018.1548806] [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] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Abstract
To develop a convenient promoter analysis system for fungi, a null-pigment mutant (NPG) of Aspergillus nidulans was used with the 4'-phosphopantetheinyl transferase (PPTase) gene, npgA, which restores the normal pigmentation in A. nidulans, as a new reporter gene. The functional organization of serially deleted promoter regions of the A. nidulans trpC gene and the Cryphonectria parasitica crp gene in filamentous fungi was representatively investigated to establish a novel fungal promoter assay system that depends on color complementation of the NPG mutant with the PPTase npgA gene. Several promoter regions of the trpC and crp genes were fused to the npgA gene containing the 1,034-bp open reading frame and the 966-bp 3' downstream region from the TAA, and the constructed fusions were introduced into the NPG mutant in A. nidulans to evaluate color recovery due to the transcriptional activity of the sequence elements. Serial deletion of the trpC and crp promoter regions in this PPTase reporter assay system reaffirmed results in previous reports by using the fungal transformation step without a laborious verification process. This approach suggests a more rapid and convenient system than conventional analyses for fungal gene expression studies.
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Affiliation(s)
- Ha-Yeon Song
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk, Korea
| | - Dahye Choi
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk, Korea
| | - Dong-Min Han
- Division of Biological Sciences, Wonkwang University, Iksan, Chonbuk, Korea
| | - Dae-Hyuk Kim
- Department of Molecular Biology and Department of Bioactive Material Science, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk, Korea
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16
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Lee JS, Kim JM, Kim KS, Choi GS, Joh JW, Lee SK. Predictors of incisional hernia in adult liver transplant recipients. Hernia 2018; 23:61-65. [PMID: 30406851 DOI: 10.1007/s10029-018-1845-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/29/2018] [Indexed: 01/14/2023]
Abstract
PURPOSE Incisional hernia is a complication following abdominal operation. Patients undergoing liver transplantation have a high risk of developing incisional hernia because of immunosuppression. The purpose of this study was to evaluate incisional hernia after liver transplantation and to identify risk factors for hernia formation in those patients. METHODS We retrospectively reviewed 1044 adult patients with more than 2 years of follow-up in patients who underwent liver transplantation from January 2000 to December 2015. RESULTS Incisional hernia was identified in 79 patients with more than 2 years of follow-up. The overall incisional hernia rate was 7.6%. The mean age and body mass index (BMI) of the patients with incisional hernia were 55 ± 9 years and 25.3 ± 3.7 kg/m2, respectively. No significant differences in gender, diagnosis, diabetes, Child-Pugh score, model for end-stage liver disease (MELD) score, donor type, hepatorenal syndrome, varix bleeding, ascites, hepatic encephalopathy, ventilator use, spontaneous bacterial peritonitis (SBP), or bile leakage were found between patients who did and did not develop incisional hernia. Patients with acute rejection before hernia development were more to have herniated patients hernia (p < 0.05). CONCLUSION Age greater than 55 years and high BMI were significant risk factors. We identified risk factors for the development of incisional hernia. Based on these risk factors, attention should be paid to incisional hernia in older and obese patients.
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Affiliation(s)
- J S Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea.
| | - K S Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - G-S Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - S-K Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
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Kim W, Kim HO, Cho JH, Kim JM, Chung HM. 4064Effects of chronic kidney disease on clinical outcomes in patients with peripheral artery disease undergoing endovascular treatment: analysis from the K-VIS ELLA registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4064] [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: 11/14/2022] Open
Affiliation(s)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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18
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Kim W, Kim JM, Cho JH, Kim HO, Woo JS, Chung HM. P6400Circadian distribution of acute myocardial infarction in different age groups: sinusoidal function analyses. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6400] [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)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J S Woo
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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Rhu J, Choi GS, Kim JM, Kwon CHD, Kim SJ, Joh JW. Laparoscopic right posterior sectionectomy versus laparoscopic right hemihepatectomy for hepatocellular carcinoma in posterior segments: Propensity Score Matching Analysis. Scand J Surg 2018; 108:23-29. [PMID: 29973107 DOI: 10.1177/1457496918783720] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND AIMS: This study was designed to analyze the feasibility of laparoscopic right posterior sectionectomy compared to laparoscopic right hemihepatectomy in patients with hepatocellular carcinoma located in the posterior segments. MATERIAL AND METHODS: The study included patients who underwent either laparoscopic right posterior sectionectomy or laparoscopic right hemihepatectomy for hepatocellular carcinoma located in segment 6 or 7 from January 2009 to December 2016 at Samsung Medical Center. After 1:1 propensity score matching, patient baseline characteristics and operative and postoperative outcomes were compared between the two groups. Disease-free survival and overall survival were compared using Kaplan-Meier log-rank test. RESULTS: Among 61 patients with laparoscopic right posterior sectionectomy and 37 patients with laparoscopic right hemihepatectomy, 30 patients from each group were analyzed after propensity score matching. After matching, baseline characteristics of the two groups were similar including tumor size (3.4 ± 1.2 cm in laparoscopic right posterior sectionectomy vs 3.7 ± 2.1 cm in laparoscopic right hemihepatectomy, P = 0.483); differences were significant before matching (3.1 ± 1.3 cm in laparoscopic right posterior sectionectomy vs 4.3 ± 2.7 cm in laparoscopic right hemihepatectomy, P = 0.035). No significant differences were observed in operative and postoperative data except for free margin size (1.04 ± 0.71 cm in laparoscopic right posterior sectionectomy vs 2.95 ± 1.75 cm in laparoscopic right hemihepatectomy, P < 0.001). Disease-free survival (5-year survival: 38.0% in laparoscopic right posterior sectionectomy vs 47.0% in laparoscopic right hemihepatectomy, P = 0.510) and overall survival (5-year survival: 92.7% in laparoscopic right posterior sectionectomy vs 89.6% in laparoscopic right hemihepatectomy, P = 0.593) did not differ between the groups based on Kaplan-Meier log-rank test. CONCLUSION: For hepatocellular carcinoma in the posterior segments, laparoscopic right posterior sectionectomy was feasible compared to laparoscopic right hemihepatectomy when performed by experienced laparoscopic surgeons.
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Affiliation(s)
- J Rhu
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G S Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C H D Kwon
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Song HY, Kim DH, Kim JM. Comparative transcriptome analysis of dikaryotic mycelia and mature fruiting bodies in the edible mushroom Lentinula edodes. Sci Rep 2018; 8:8983. [PMID: 29895888 PMCID: PMC5997629 DOI: 10.1038/s41598-018-27318-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/31/2018] [Indexed: 02/08/2023] Open
Abstract
Lentinula edodes is a popular cultivated edible mushroom with high nutritional and medicinal value. To understand the regulation of gene expression in the dikaryotic mycelium and mature fruiting body in the commercially important Korean L. edodes strain, we first performed comparative transcriptomic analysis, using Illumina HiSeq platform. De novo assembly of these sequences revealed 11,675 representative transcripts in two different stages of L. edodes. A total of 9,092 unigenes were annotated and subjected to Gene Ontology, EuKaryotic Orthologous Groups, and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Gene expression analysis revealed that 2,080 genes were differentially expressed, with 1,503 and 577 upregulated in the mycelium and a mature fruiting body, respectively. Analysis of 18 KEGG categories indicated that fruiting body-specific transcripts were significantly enriched in ‘replication and repair’ and ‘transcription’ pathways, which are important for premeiotic replication, karyogamy, and meiosis during maturation. We also searched for fruiting body-specific proteins such as aspartic protease, gamma-glutamyl transpeptidase, and cyclohexanone monooxygenase, which are involved in fruiting body maturation and isolation of functional substances. These transcriptomes will be useful in elucidating the molecular mechanisms of mature fruiting body development and beneficial properties, and contribute to the characterization of novel genes in L. edodes.
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Affiliation(s)
- Ha-Yeon Song
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk, 54538, Korea
| | - Dae-Hyuk Kim
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, Chonbuk, 54896, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk, 54538, Korea.
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Kim JM, Choi S, Lee SW, Park K. Voltage-dependent Ca 2+ channels promote branching morphogenesis of salivary glands by patterning differential growth. Sci Rep 2018; 8:7566. [PMID: 29765108 PMCID: PMC5954160 DOI: 10.1038/s41598-018-25957-w] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/30/2018] [Indexed: 11/30/2022] Open
Abstract
Branching morphogenesis is a crucial part of early developmental processes in diverse organs, but the detailed mechanism of this morphogenic event remains to be elucidated. Here we introduce an unknown mechanism leading to branching morphogenesis using mouse embryonic organotypic cultures with time-lapse live imaging. We found spatially expressed L-type voltage-dependent Ca2+ channels (VDCCs) in the peripheral layers of developing epithelial buds and identified the VDCCs as a core signaling mediator for patterning branching architecture. In this process, differential growth in peripheral layers by VDCC-induced ERK activity promoted cleft formation through an epithelial buckling-folding mechanism. Our findings reveal an unexpected role of VDCCs in developmental processes, and address a fundamental question regarding the initial process of branching morphogenesis.
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Affiliation(s)
- J M Kim
- Department of Dentistry, CHA Bundang Medical Center, CHA University, Seongnam, 13496, South Korea
| | - S Choi
- Department of Physiology, School of Dentistry, Seoul National University and Dental Research Institute, Seoul, 03080, South Korea
| | - S W Lee
- Department of Physiology, School of Dentistry, Seoul National University and Dental Research Institute, Seoul, 03080, South Korea
| | - K Park
- Department of Physiology, School of Dentistry, Seoul National University and Dental Research Institute, Seoul, 03080, South Korea.
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Jo MJ, Kumar H, Joshi HP, Choi H, Ko WK, Kim JM, Hwang SSS, Park SY, Sohn S, Bello AB, Kim KT, Lee SH, Zeng X, Han I. Oral Administration of α-Asarone Promotes Functional Recovery in Rats With Spinal Cord Injury. Front Pharmacol 2018; 9:445. [PMID: 29867457 PMCID: PMC5949368 DOI: 10.3389/fphar.2018.00445] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 01/09/2018] [Accepted: 04/17/2018] [Indexed: 11/13/2022] Open
Abstract
α-asarone, a bioactive compound found in Acorus plant species, has been shown to exhibit neuroprotective, anti-oxidative, anti-inflammatory, and cognitive-enhancing effects. However, the effects of α-asarone on spinal cord injury (SCI) have not yet been elucidated. The present study investigated the effects of α-asarone on the mRNA of pro-inflammatory cytokines, macrophage polarization toward an anti-inflammatory M2 phenotype, and angiogenesis in rats with compressive SCI. α-Asarone was orally administered (10 mg/kg) once per day for 14 days following moderate static compression SCI. Compared to controls, α-asarone treatment significantly improved locomotor score, prevented neuroinflammation, and facilitated angiogenesis in the spinal cord at 14 days after SCI. Furthermore, α-asarone significantly reduced the TNF-α, IL-1β, IL-6, monocyte chemoattractant protein 1 (MCP-1), macrophage inflammatory protein 2 (MIP-2), and inducible nitric oxide synthase (iNOS) levels but increased the IL-4, IL-10, and arginase 1 levels at 24 h after SCI. At 7 and 14 days after SCI, immunohistochemistry showed reduced reactive gliosis and neuroinflammation and an increased expression of M2 macrophage markers and angiogenesis. The results suggest that the inhibition of pro-inflammatory cytokines, macrophage polarization toward an anti-inflammatory M2 phenotype, and angiogenesis by α-asarone may be some of the mechanisms underlying the α-asarone-mediated neuroprotective effects on an injured spinal cord.
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Affiliation(s)
- Min-Jae Jo
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Hemant Kumar
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Hari P Joshi
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Hyemin Choi
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Wan-Kyu Ko
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - J M Kim
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Sean S S Hwang
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Song Y Park
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Seil Sohn
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
| | - Alvin B Bello
- Department of Biomedical Science, CHA University, Seongnam-si, South Korea
| | - Kyoung-Tae Kim
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, South Korea
| | - Soo-Hong Lee
- Department of Biomedical Science, CHA University, Seongnam-si, South Korea
| | - Xiang Zeng
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Inbo Han
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Seongnam-si, South Korea
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Min JH, Kang TW, Cha DI, Song KD, Lee MW, Rhim H, Sinn DH, Kim JM, Sohn I. Radiofrequency ablation versus surgical resection for multiple HCCs meeting the Milan criteria: propensity score analyses of 10-year therapeutic outcomes. Clin Radiol 2018; 73:676.e15-676.e24. [PMID: 29709236 DOI: 10.1016/j.crad.2018.02.007] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 02/13/2018] [Indexed: 02/06/2023]
Abstract
AIM To assess the long-term therapeutic outcomes of radiofrequency ablation (RFA) versus surgical resection (SR) as a first-line treatment for patients meeting the Milan criteria with multiple hepatocellular carcinomas (HCCs). MATERIALS AND METHODS This retrospective study was approved by the institutional review board and the requirement for informed consent was waived. Between January 2004 and December 2009, among 3,441 patients with treatment-naive HCCs, 88 patients meeting the Milan criteria with multiple HCCs (Barcelona Clinic Liver Cancer [BCLC] A stage) who underwent either RFA (n=62) or SR (n=26) were included. Recurrence-free survival (RFS) and overall survival (OS) rates were compared by using propensity score matching. In addition, multivariate analysis was performed for assess the prognostic factor. RESULTS Matching yielded 20 matched pairs of patients. In the two matched groups, the RFS rates were 30% and 30% at 5- and 10-years, respectively, in the RFA group and 60% and 48.6% in the SR group (p=0.054). The corresponding OS rates were 63.3% and 46.1% in the RFA group and 100% and 73.6% in the SR group, respectively (p=0.061). In multivariate analysis, treatment type was independently associated with RFS (hazard ratio [HR]=0.51; p=0.043) whereas it was not a statistically significant factor for OS (HR=0.50; p=0.088). CONCLUSION In patients meeting the Milan criteria with multiple HCCs (BCLC A stage), SR may provide better RFS compared to RFA.
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Affiliation(s)
- J H Min
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - T W Kang
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - D I Cha
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K D Song
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - M W Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H Rhim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D H Sinn
- Division of Hepatology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - I Sohn
- Biostatistics and Clinical Epidemiology Center, Samsung Biomedical Research Institute, Seoul, Republic of Korea
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Moon HH, Kim TS, Song S, Shin M, Chung YJ, Lee S, Choi GS, Kim JM, Kwon CHD, Lee SK, Joh J. Early Vs Late Liver Retransplantation: Different Characteristics and Prognostic Factors. Transplant Proc 2018; 50:2668-2674. [PMID: 30401374 DOI: 10.1016/j.transproceed.2018.03.040] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/06/2018] [Indexed: 01/22/2023]
Abstract
BACKGROUND East Asia is a known endemic area for hepatitis B, and living donor liver transplantation is mainly performed. Liver retransplantation (ReLT) is expected to become an increasing problem because of a shortage of organs. This study aimed to compare early and late ReLT with consideration of specific circumstances and disease background of East Asians. METHODS Between October 1996 and January 2015, 51 patients underwent ReLT; we performed a retrospective analysis of data obtained from medical records of the patients. Clinical characteristics, indication, causes of death, survival rate, and prognostic factors were investigated. RESULT The survival rate for early ReLT (n = 18) was 51.5% and that for late ReLT (n = 33) was 50.1% at 1 year postoperatively. Continuous venovenous hemodialysis and the use of mechanical ventilators were more frequent, and pre-retransplant intensive care unit stay and prothrombin time was longer in early ReLT than in late ReLT. Operation time was longer and the amount of intraoperative blood loss was greater in late ReLT than in early ReLT. Multivariate analysis showed that a higher C-reactive protein level increased mortality in early ReLT (P = .045), whereas a higher total bilirubin level increased the risk of death in late ReLT (P = .03). CONCLUSION Patients with early ReLT are likely to be sicker pre-retransplantation and require adequate treatment of the pretransplant infectious disease. On the other hand, late ReLT is likely to be technically more difficult and should be decided before the total bilirubin level increases substantially.
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Affiliation(s)
- H H Moon
- Department of Surgery, Kosin University Gospel Hospital, Kosin University School of Medicine, Busan, Korea
| | - T-S Kim
- Department of Surgery, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea
| | - S Song
- Department of Surgery, Dankuk University Hospital, Dankuk University School of Medicine, Daejeon, Korea
| | - M Shin
- Department of Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Y J Chung
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G S Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C H D Kwon
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S-K Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Joh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Ryu JM, Yu J, Nam SJ, Kim I, Lee JE, Lee SK, Kim JM, Choi HJ, Kim SW. Abstract P1-07-25: Differences among young breast cancer patients based on subtype: A study from the Korean Breast Cancer Society – Running head: Do breast cancers in 20s have worse prognosis than 30s? Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-07-25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose Numerous studies demonstrated that breast cancer in young women (BCY) has unfavorable prognostic features and unfavorable subtype. However, there were few studies to evaluate the effect on the prognosis of breast cancer according to the subtype disparities by age especially BCY. We analyzed breast cancer mortality stratified tumor subtype according to age among the patients with less than 50 year-old. Patients and Methods Data obtained from the Korean Breast Cancer Society Registry (KBCSR), patients diagnosed with invasive breast cancer were retrospectively between 2003 and 2010. We excluded patients with male breast cancer, underwent neoadjuvant chemotherapy, distant metastasis or inflammatory breast cancer at presentation, and other histopathology except invasive ductal or invasive lobular carcinoma. We also excluded patients with lack of immunohistochemistry data and short-term follow-up duration (<12 months). Results We identified 37,865 patients, and excluded by study protocol. Among those, 30,793 patients with breast cancer for eligible for analysis, 793 (2.6%) were 20-29 years and 8,926 (28.8%) were 30-39 years of age. Median follow-up duration was 84 months. Mean age was 42.4 years old. Younger patients with breast cancer were more likely to have advanced stage, higher nuclear grade, present lymphovascular invasion, and more likely to be unfavorable subtype such as triple negative breast cancer (TNBC)
Table 1. Baseline Characteristics Age at Presentation 20-29, N(%)30-39, N(%)40-49, N(%)P-valueOverall793 (2.6)8,133 (26.4)21,867 (71.0) Pathologic stage <.0001I295 (37.2)2,928 (36.0)9,288 (42.5) II373 (47.0)3,644 (44.8)9,078 (41.5) III119 (15.0)1,442 (17.7)3,211 (14.7) Family history <.0001Yes81 (10.2)674 (8.3)1,391 (6.4) No712 (89.8)7,459 (91.7)20,476 (93.6) Nuclear grade <.0001Low85 (10.2)941 (11.6)3,824 (17.5) Intermediate288 (36.3)3,340 (41.1)9,688 (44.3) High331 (41.7)3,165 (38.9)6,650 (30.4) LVI <.0001Yes249 (31.4)2,840 (34.9)6,711 (30.7) No433 (54.6)4,367 (53.7)13,005 (59.5) Subtype <.0001Luminal A314 (39.6)3,529 (43.4)11,716 (53.6) Luminal B190 (24.0)1,895 (23.3)4,775 (21.8) Her-252 (6.6)724 (8.9)1,723 (7.9) TNBC237 (29.8)1,895 (24.4)3,653 (16.7) HER-2, human epidermal growth factor-2; TNBC, triple negative breast cancer
. Patients with younger age group showed worse prognosis than patients with older age patients. In multivariate analysis for overall survival, as patients were younger group, hazard ratio was increased, and the patients with TNBC showed higher HR than HER-2, Luminal B, and Luminal A subtype (P< .0001, P< .0001, P< .0001, and P< .0001, respectively). Stratified by subtype, luminal subtype showed significant worse prognosis as the age group was younger, while as, Her-2 and TNBC subtype showed no significantly difference by the age group. Conclusion Patients with 20s breast cancer showed unfavorable characteristics and worse prognosis than 30s and older aged group. Stratified by tumor subtype, breast cancer in 20s with luminal subtype showed worse prognosis, while as HER-2 and TNBC showed no significantly different compare to breast cancer in 30s.
Citation Format: Ryu JM, Yu J, Nam SJ, Kim I, Lee JE, Lee SK, Kim JM, Choi HJ, Kim SW. Differences among young breast cancer patients based on subtype: A study from the Korean Breast Cancer Society – Running head: Do breast cancers in 20s have worse prognosis than 30s? [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-07-25.
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Affiliation(s)
- JM Ryu
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Yu
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - SJ Nam
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - I Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - JE Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - SK Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - JM Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - HJ Choi
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - SW Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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So KK, Ko YH, Chun J, Bal J, Jeon J, Kim JM, Choi J, Lee YH, Huh JH, Kim DH. Global DNA Methylation in the Chestnut Blight Fungus Cryphonectria parasitica and Genome-Wide Changes in DNA Methylation Accompanied with Sectorization. Front Plant Sci 2018; 9:103. [PMID: 29456549 PMCID: PMC5801561 DOI: 10.3389/fpls.2018.00103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/18/2018] [Indexed: 06/08/2023]
Abstract
Mutation in CpBck1, an ortholog of the cell wall integrity mitogen-activated protein kinase kinase kinase (MAPKKK) of Saccharomyces cerevisiae, in the chestnut blight fungus Cryphonectria parasitica resulted in a sporadic sectorization as culture proceeded. The progeny from the sectored area maintained the characteristics of the sector, showing a massive morphogenetic change, including robust mycelial growth without differentiation. Epigenetic changes were investigated as the genetic mechanism underlying this sectorization. Quantification of DNA methylation and whole-genome bisulfite sequencing revealed genome-wide DNA methylation of the wild-type at each nucleotide level and changes in DNA methylation of the sectored progeny. Compared to the wild-type, the sectored progeny exhibited marked genome-wide DNA hypomethylation but increased methylation sites. Expression analysis of two DNA methyltransferases, including two representative types of DNA methyltransferase (DNMTase), demonstrated that both were significantly down-regulated in the sectored progeny. However, functional analysis using mutant phenotypes of corresponding DNMTases demonstrated that a mutant of CpDmt1, an ortholog of RID of Neurospora crassa, resulted in the sectored phenotype but the CpDmt2 mutant did not, suggesting that the genetic basis of fungal sectorization is more complex. The present study revealed that a mutation in a signaling pathway component resulted in sectorization accompanied with changes in genome-wide DNA methylation, which suggests that this signal transduction pathway is important for epigenetic control of sectorization via regulation of genes involved in DNA methylation.
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Affiliation(s)
- Kum-Kang So
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, South Korea
| | - Yo-Han Ko
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, South Korea
| | - Jeesun Chun
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, South Korea
| | - Jyotiranjan Bal
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, South Korea
| | - Junhyun Jeon
- Department of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, South Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, South Korea
| | - Jaeyoung Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Jin Hoe Huh
- Department of Plant Science, Seoul National University, Seoul, South Korea
| | - Dae-Hyuk Kim
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju, South Korea
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Kim TS, Kim JM, Kwon CHD, Kim SJ, Joh JW, Lee SK. Prognostic Factors Predicting Poor Outcome in Living-Donor Liver Transplantation for Fulminant Hepatic Failure. Transplant Proc 2018; 49:1118-1122. [PMID: 28583539 DOI: 10.1016/j.transproceed.2017.03.031] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Living-donor liver transplantation (LDLT) has been accepted as feasible treatment for fulminant hepatic failure (FHF), although it has generated several debatable issues. In this study, we investigated the prognostic factors predicting fatal outcome after LDLT for FHF. METHODS From April 1999 to April 2011, 60 patients underwent LT for acute liver failure, including 42 patients for FHF at Samsung Medical Center, Seoul, Korea. Among 42 patients, 30 patients underwent LDLT for FHF, and the database of these patients was analyzed retrospectively to investigate the prognostic factors after LDLT for FHF. RESULTS Among 30 patients, 7 patients (23%) died during the in-hospital period within 6 months, and 23 patients (77%) survived until recently. In univariate analyses, donor age (>35 years), graft volume (GV)/standard liver volume (SLV) (<50%), cold ischemic time (>120 minutes), hepatic encephalopathy (grade IV), hepato-renal syndrome (HRS), and history of ventilator care were associated with fatal outcome after LDLT for FHF. In multivariate analyses, HRS, GV/SLV (<50%), and donor age (>35 years) were significantly associated with fatal outcome. Although the statistical significance was not shown in this analysis (P = .059), hepatic encephalopathy grade IV also appears to be a risk factor predicting fatal outcome. CONCLUSIONS The survival of patients with FHF undergoing LDLT was comparable to that in published data. In this study, HRS, GV/SLV <50%, and donor age >35 years are the independent poor prognostic factors.
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Affiliation(s)
- T-S Kim
- Department of Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C H D Kwon
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - S-K Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim JH, Son YD, Kim JM, Kim HK, Kim YB, Lee C, Oh CH. Interregional correlations of glucose metabolism between the basal ganglia and different cortical areas: an ultra-high resolution PET/MRI fusion study using 18F-FDG. ACTA ACUST UNITED AC 2017; 51:e6724. [PMID: 29160415 PMCID: PMC5685063 DOI: 10.1590/1414-431x20176724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 09/12/2017] [Indexed: 11/29/2022]
Abstract
Basal ganglia have complex functional connections with the cerebral cortex and are involved in motor control, executive functions of the forebrain, such as the planning of movement, and cognitive behaviors based on their connections. The aim of this study was to provide detailed functional correlation patterns between the basal ganglia and cerebral cortex by conducting an interregional correlation analysis of the 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) data based on precise structural information. Fifteen participants were scanned with 7-Tesla magnetic resonance imaging (MRI) and high resolution research tomography (HRRT)-PET fusion system using 18F-FDG. For detailed interregional correlation analysis, 24 subregions of the basal ganglia including pre-commissural dorsal caudate, post-commissural caudate, pre-commissural dorsal putamen, post-commissural putamen, internal globus pallidus, and external globus pallidus and 80 cerebral regions were selected as regions of interest on the MRI image and their glucose metabolism were calculated from the PET images. Pearson's product-moment correlation analysis was conducted for the interregional correlation analysis of the basal ganglia. Functional correlation patterns between the basal ganglia and cerebral cortex were not only consistent with the findings of previous studies, but also showed new functional correlation between the dorsal striatum (i.e., caudate nucleus and putamen) and insula. In this study, we established the detailed basal ganglia subregional functional correlation patterns using 18F-FDG PET/MRI fusion imaging. Our methods and results could potentially be an important resource for investigating basal ganglia dysfunction as well as for conducting functional studies in the context of movement and psychiatric disorders.
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Affiliation(s)
- J H Kim
- Research Institute for Advanced Industrial Technology, College of Science and Technology, Korea University, Sejong, South Korea
| | - Y D Son
- Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, South Korea
| | - J M Kim
- Department of Electronics and Information Engineering, College of Science and Technology, Korea University, Sejong, South Korea
| | - H K Kim
- Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, South Korea
| | - Y B Kim
- Department of Neurosurgery, Gachon University Gil Medical Center, Gachon University School of Medicine, Incheon, South Korea
| | - C Lee
- Bioimaging Research Team, Korea Basic Science Institute, Cheongju, South Korea
| | - C H Oh
- Department of Electronics and Information Engineering, College of Science and Technology, Korea University, Sejong, South Korea
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Judd A, Zangerle R, Touloumi G, Warszawski J, Meyer L, Dabis F, Mary Krause M, Ghosn J, Leport C, Wittkop L, Reiss P, Wit F, Prins M, Bucher H, Gibb D, Fätkenheuer G, Julia DA, Obel N, Thorne C, Mocroft A, Kirk O, Stephan C, Pérez-Hoyos S, Hamouda O, Bartmeyer B, Chkhartishvili N, Noguera-Julian A, Antinori A, d’Arminio Monforte A, Brockmeyer N, Prieto L, Rojo Conejo P, Soriano-Arandes A, Battegay M, Kouyos R, Mussini C, Tookey P, Casabona J, Miró JM, Castagna A, Konopnick D, Goetghebuer T, Sönnerborg A, Quiros-Roldan E, Sabin C, Teira R, Garrido M, Haerry D, de Wit S, Miró JM, Costagliola D, d’Arminio-Monforte A, Castagna A, del Amo J, Mocroft A, Raben D, Chêne G, Judd A, Pablo Rojo C, Barger D, Schwimmer C, Termote M, Wittkop L, Campbell M, Frederiksen CM, Friis-Møller N, Kjaer J, Raben D, Salbøl Brandt R, Berenguer J, Bohlius J, Bouteloup V, Bucher H, Cozzi-Lepri A, Dabis F, d’Arminio Monforte A, Davies MA, del Amo J, Dorrucci M, Dunn D, Egger M, Furrer H, Grabar S, Guiguet M, Judd A, Kirk O, Lambotte O, Leroy V, Lodi S, Matheron S, Meyer L, Miro JM, Mocroft A, Monge S, Nakagawa F, Paredes R, Phillips A, Puoti M, Rohner E, Schomaker M, Smit C, Sterne J, Thiebaut R, Thorne C, Torti C, van der Valk M, Wittkop L, Tanser F, Vinikoor M, Macete E, Wood R, Stinson K, Garone D, Fatti G, Giddy J, Malisita K, Eley B, Fritz C, Hobbins M, Kamenova K, Fox M, Prozesky H, Technau K, Sawry S, Benson CA, Bosch RJ, Kirk GD, Boswell S, Mayer KH, Grasso C, Hogg RS, Richard Harrigan P, Montaner JSG, Yip B, Zhu J, Salters K, Gabler K, Buchacz K, Brooks JT, Gebo KA, Moore RD, Moore RD, Rodriguez B, Horberg MA, Silverberg MJ, Thorne JE, Rabkin C, Margolick JB, Jacobson LP, D’Souza G, Klein MB, Rourke SB, Rachlis AR, Cupido P, Hunter-Mellado RF, Mayor AM, John Gill M, Deeks SG, Martin JN, Patel P, Brooks JT, Saag MS, Mugavero MJ, Willig J, Eron JJ, Napravnik S, Kitahata MM, Crane HM, Drozd DR, Sterling TR, Haas D, Rebeiro P, Turner M, Bebawy S, Rogers B, Justice AC, Dubrow R, Fiellin D, Gange SJ, Anastos K, Moore RD, Saag MS, Gange SJ, Kitahata MM, Althoff KN, Horberg MA, Klein MB, McKaig RG, Freeman AM, Moore RD, Freeman AM, Lent C, Kitahata MM, Van Rompaey SE, Crane HM, Drozd DR, Morton L, McReynolds J, Lober WB, Gange SJ, Althoff KN, Abraham AG, Lau B, Zhang J, Jing J, Modur S, Wong C, Hogan B, Desir F, Liu B, You B, Cahn P, Cesar C, Fink V, Sued O, Dell’Isola E, Perez H, Valiente J, Yamamoto C, Grinsztejn B, Veloso V, Luz P, de Boni R, Cardoso Wagner S, Friedman R, Moreira R, Pinto J, Ferreira F, Maia M, Célia de Menezes Succi R, Maria Machado D, de Fátima Barbosa Gouvêa A, Wolff M, Cortes C, Fernanda Rodriguez M, Allendes G, William Pape J, Rouzier V, Marcelin A, Perodin C, Tulio Luque M, Padgett D, Sierra Madero J, Crabtree Ramirez B, Belaunzaran P, Caro Vega Y, Gotuzzo E, Mejia F, Carriquiry G, McGowan CC, Shepherd BE, Sterling T, Jayathilake K, Person AK, Rebeiro PF, Giganti M, Castilho J, Duda SN, Maruri F, Vansell H, Ly PS, Khol V, Zhang FJ, Zhao HX, Han N, Lee MP, Li PCK, Lam W, Chan YT, Kumarasamy N, Saghayam S, Ezhilarasi C, Pujari S, Joshi K, Gaikwad S, Chitalikar A, Merati TP, Wirawan DN, Yuliana F, Yunihastuti E, Imran D, Widhani A, Tanuma J, Oka S, Nishijima T, Na S, Choi JY, Kim JM, Sim BLH, Gani YM, David R, Kamarulzaman A, Syed Omar SF, Ponnampalavanar S, Azwa I, Ditangco R, Uy E, Bantique R, Wong WW, Ku WW, Wu PC, Ng OT, Lim PL, Lee LS, Ohnmar PS, Avihingsanon A, Gatechompol S, Phanuphak P, Phadungphon C, Kiertiburanakul S, Sungkanuparph S, Chumla L, Sanmeema N, Chaiwarith R, Sirisanthana T, Kotarathititum W, Praparattanapan J, Kantipong P, Kambua P, Ratanasuwan W, Sriondee R, Nguyen KV, Bui HV, Nguyen DTH, Nguyen DT, Cuong DD, An NV, Luan NT, Sohn AH, Ross JL, Petersen B, Cooper DA, Law MG, Jiamsakul A, Boettiger DC, Ellis D, Bloch M, Agrawal S, Vincent T, Allen D, Smith D, Rankin A, Baker D, Templeton DJ, O’Connor CC, Thackeray O, Jackson E, McCallum K, Ryder N, Sweeney G, Cooper D, Carr A, Macrae K, Hesse K, Finlayson R, Gupta S, Langton-Lockton J, Shakeshaft J, Brown K, Idle S, Arvela N, Varma R, Lu H, Couldwell D, Eswarappa S, Smith DE, Furner V, Smith D, Cabrera G, Fernando S, Cogle A, Lawrence C, Mulhall B, Boyd M, Law M, Petoumenos K, Puhr R, Huang R, Han A, Gunathilake M, Payne R, O’Sullivan M, Croydon A, Russell D, Cashman C, Roberts C, Sowden D, Taing K, Marshall P, Orth D, Youds D, Rowling D, Latch N, Warzywoda E, Dickson B, Donohue W, Moore R, Edwards S, Boyd S, Roth NJ, Lau H, Read T, Silvers J, Zeng W, Hoy J, Watson K, Bryant M, Price S, Woolley I, Giles M, Korman T, Williams J, Nolan D, Allen A, Guelfi G, Mills G, Wharry C, Raymond N, Bargh K, Templeton D, Giles M, Brown K, Hoy J. Comparison of Kaposi Sarcoma Risk in Human Immunodeficiency Virus-Positive Adults Across 5 Continents: A Multiregional Multicohort Study. Clin Infect Dis 2017; 65:1316-1326. [PMID: 28531260 PMCID: PMC5850623 DOI: 10.1093/cid/cix480] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/19/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND We compared Kaposi sarcoma (KS) risk in adults who started antiretroviral therapy (ART) across the Asia-Pacific, South Africa, Europe, Latin, and North America. METHODS We included cohort data of human immunodeficiency virus (HIV)-positive adults who started ART after 1995 within the framework of 2 large collaborations of observational HIV cohorts. We present incidence rates and adjusted hazard ratios (aHRs). RESULTS We included 208140 patients from 57 countries. Over a period of 1066572 person-years, 2046 KS cases were diagnosed. KS incidence rates per 100000 person-years were 52 in the Asia-Pacific and ranged between 180 and 280 in the other regions. KS risk was 5 times higher in South African women (aHR, 4.56; 95% confidence intervals [CI], 2.73-7.62) than in their European counterparts, and 2 times higher in South African men (2.21; 1.34-3.63). In Europe, Latin, and North America KS risk was 6 times higher in men who have sex with men (aHR, 5.95; 95% CI, 5.09-6.96) than in women. Comparing patients with current CD4 cell counts ≥700 cells/µL with those whose counts were <50 cells/µL, the KS risk was halved in South Africa (aHR, 0.53; 95% CI, .17-1.63) but reduced by ≥95% in other regions. CONCLUSIONS Despite important ART-related declines in KS incidence, men and women in South Africa and men who have sex with men remain at increased KS risk, likely due to high human herpesvirus 8 coinfection rates. Early ART initiation and maintenance of high CD4 cell counts are essential to further reducing KS incidence worldwide, but additional measures might be needed, especially in Southern Africa.
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Kim YG, Song JB, Kim JC, Kim JM, Yoo BH, Yun SB, Hwang DY, Lee HG. Note: Progress on the use of MgB 2 superconducting joint technique for the development of MgB 2 magnets for magnetic resonance imaging (MRI). Rev Sci Instrum 2017; 88:086105. [PMID: 28863663 DOI: 10.1063/1.4997257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This note presents a superconducting joint technique for the development of MgB2 magnetic resonance imaging (MRI) magnets. The MgB2 superconducting joint was fabricated by a powder processing method using Mg and B powders to establish a wire-bulk-wire connection. The joint resistance measured using a field-decay method was <10-14 Ω, demonstrating that the proposed joint technique could be employed for developing "next-generation" MgB2 MRI magnets operating in the persistent current mode.
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Affiliation(s)
- Y G Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - J B Song
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - J C Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - J M Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - B H Yoo
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - S B Yun
- Kiswire Advanced Technology Co., Ltd., Daejeon 34026, South Korea
| | - D Y Hwang
- Kiswire Advanced Technology Co., Ltd., Daejeon 34026, South Korea
| | - H G Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
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Lee JS, Kim JM, Seok J, Kim BJ. Correlation between socio-economic status and atopic dermatitis in Korean adults: the Korea national health and nutrition examination survey (2007-2014). J Eur Acad Dermatol Venereol 2017; 31:1509-1515. [PMID: 28516452 DOI: 10.1111/jdv.14343] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 04/19/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Atopic dermatitis (AD) is one of the most common allergic diseases. Its prevalence has been increasing in recent decades. Socio-economic status is well-known risk factor of allergic diseases. OBJECTIVE This study was performed to investigate the relationship between socio-economic status and AD in Korean adults. METHODS Data were acquired from 47 351 men and women, ≥19 years of age who participated in the Korea National Health and Nutrition Examination Surveys (KNHANES) conducted from 2007 to 2014. The presence of AD was based on self-reported physician diagnosis of AD in the Health Interview Surveys. RESULTS The prevalence of AD was 3.1%, which decreased with increasing age. In univariate analysis, adults with AD were prone to be female, younger, never-married, well educated, lower household members, and urban dwelling (all P < 0.01). Monthly family income and smoking status were not associated with the presence of AD. The prevalence of hypertension, diabetes mellitus and asthma was higher in AD subjects (all P < 0.01), while obesity was not associated with adult AD. After adjusting for confounders, logistic regression analysis showed female sex (adjusted odds ratio [aOR]: 1.483, 95% CI: 1.268-1.734), age (P < 0.01), marital status (Single: aOR: 1.307, 95% CI: 1.012-1.690; Never-married: aOR: 1.938, 95% CI: 1.513-2.482), urban residence (aOR: 1.281, 95% CI: 1.045-1.569) and asthma (aOR: 1.788, 95% CI: 1.416-2.258) were associated with higher prevalence of AD (all P < 0.01). CONCLUSION Female sex, age, marital status, urban residence, and the presence of asthma are important risk factors of the prevalence of AD in Korean adults.
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Affiliation(s)
- J S Lee
- Department of Pediatrics, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - J M Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - J Seok
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Han MH, Ryu JI, Kim CH, Kim JM, Cheong JH, Bak KH, Chun HJ. Influence of systemic bone mineral density on atlantoaxial subluxation in patients with rheumatoid arthritis. Osteoporos Int 2017; 28:1931-1938. [PMID: 28255666 DOI: 10.1007/s00198-017-3972-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 01/02/2017] [Accepted: 02/14/2017] [Indexed: 11/29/2022]
Abstract
UNLABELLED Osteopenia and osteoporosis were independent predictive factors for higher atlantoaxial subluxation occurrence in patients with lower body mass index. Our findings suggest that patients with rheumatoid arthritis with osteopenia or osteoporosis, particularly those with lower body mass index (BMI), should be screened regularly to determine the status of their cervical spines. INTRODUCTION Cervical spine involvement in rheumatoid arthritis (RA) patients may cause serious adverse effects on quality of life and overall health. This study aimed to evaluate the association between atlantodental interval (ADI), atlantoaxial subluxation (AAS), and systemic bone mineral density (BMD) based on BMI variations among established patients with RA. METHODS The ADI was transformed to the natural log scale to normalize distributions for all analyses. Multivariable linear regression analyses were used to identify independent predictive factors for ADI based on each BMD classification. Multivariate Cox regression analyses were also performed to identify independent predictive factors for the risk of AAS, which were classified by tertile groups of BMI. RESULTS A total of 1220 patients with RA who had undergone at least one or more cervical radiography and BMD assessments were identified and enrolled. We found that the association between BMD and ADI (β, -0.029; 95% CI, -0.059 to 0.002; p = 0.070) fell short of achieving statistical significance. However, the ADI showed a 3.6% decrease per 1 BMI increase in the osteoporosis group (β, -0.036; 95% CI, -0.061 to -0.011; p = 0.004). The osteopenia and osteoporosis groups showed about a 1.5-fold and a 1.8-fold increased risk of AAS occurrence among the first tertile of the BMI group. CONCLUSIONS Our study showed a possible association between lower BMD and AAS occurrence in patients with RA with lower BMI. Further studies are needed to confirm our findings.
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Affiliation(s)
- M H Han
- Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri, Gyeonggi-do, 471-701, South Korea
| | - J I Ryu
- Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri, Gyeonggi-do, 471-701, South Korea.
| | - C H Kim
- Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri, Gyeonggi-do, 471-701, South Korea
| | - J M Kim
- Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri, Gyeonggi-do, 471-701, South Korea
| | - J H Cheong
- Department of Neurosurgery, Hanyang University Guri Hospital, 153 Gyeongchun-ro, Guri, Gyeonggi-do, 471-701, South Korea
| | - K H Bak
- Department of Neurosurgery, Hanyang University Medical Center, 222-1, Wangsimni-ro, Seongdong-gu, Seoul, 133-792, South Korea
| | - H J Chun
- Department of Neurosurgery, Hanyang University Medical Center, 222-1, Wangsimni-ro, Seongdong-gu, Seoul, 133-792, South Korea
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Abstract
Under hypotonic conditions, the regulatory volume decrease (RVD) is essential to maintain physiological homeostasis and functions in diverse biological systems. Intracellular Ca2+ has been reported as an important mediator of this response, but the underlying Ca2+ mechanism responsible for RVD is still controversial. Here we investigate the role of Ca2+ in the RVD response using live-cell imaging, microspectrofluorimetry, and a patch-clamp technique. A typical RVD was observed in submandibular gland acinar cells after swelling in a hypotonic solution, whereas intracellular Ca2+ chelation completely inhibited the RVD response. The incidence and magnitude of the Ca2+ transient were proportional to the degree of hypotonicity of the extracellular medium, and there was a close relationship between intracellular Ca2+ concentration and the volumetric changes of the cells. Notably, this response was mediated by Ca2+-induced Ca2+ release, which is triggered by Ca2+ influx via stretch-activated TRPM7 channels. Furthermore, we detected the generation of Cl- currents in the swelling acinar cells upon hypotonic stress, and the current profile matched that of the Ca2+-activated Cl- currents. A specific inhibitor of Cl- currents also inhibited the RVD response. In conclusion, an intracellular Ca2+ increase in response to osmotically induced cell swelling plays a critical role in RVD in salivary gland acinar cells.
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Affiliation(s)
- J M Kim
- 1 Department of Physiology, College of Dentistry, Seoul National University, & Dental Research Institute, Seoul, Korea
| | - S Choi
- 1 Department of Physiology, College of Dentistry, Seoul National University, & Dental Research Institute, Seoul, Korea
| | - K Park
- 1 Department of Physiology, College of Dentistry, Seoul National University, & Dental Research Institute, Seoul, Korea
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Ryu S, Park S, Lee JH, Kim YR, Na HS, Lim HS, Choi HY, Hwang IY, Lee JG, Park ZW, Oh WY, Kim JM, Choi SE. A Study on CYP2C19 and CYP2D6 Polymorphic Effects on Pharmacokinetics and Pharmacodynamics of Amitriptyline in Healthy Koreans. Clin Transl Sci 2017; 10:93-101. [PMID: 28296334 PMCID: PMC5355968 DOI: 10.1111/cts.12451] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 01/13/2017] [Indexed: 12/16/2022] Open
Abstract
We performed a double-blinded, genotype-based stratification study to explore the pharmacokinetics and pharmacodynamics of amitriptyline according to CYP2C19 and CYP2D6 genotype in Korean subjects. Twenty-four healthy adults were grouped by genotype of CYP2C19 and CYP2D6. After a single dose of 25 mg of amitriptyline, blood samples were collected and anticholinergic effects were measured. The extent of N-demethylation of amitriptyline significantly decreased in subjects carrying two nonfunctional alleles of CYP2C19. The extent of hydroxylation of amitriptyline or nortriptyline was significantly reduced in subjects carrying two CYP2D6 decreased functional alleles compared with those with no or one decreased functional allele. The overall metabolic pathway of amitriptyline was more likely to be dominated by CYP2C19 than CYP2D6. The gene variations of CYP2C19 and CYP2D6 did not change the pharmacodynamic effect. The findings of this study will provide useful information on individualized drug treatment with amitriptyline considering both CYP2D6 and CYP2C19 gene variations.
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Affiliation(s)
- S Ryu
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - S Park
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J H Lee
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - Y R Kim
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - H S Na
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - H S Lim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, University of Ulsan, Asan Medical Center, Republic of Korea
| | - H Y Choi
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, University of Ulsan, Asan Medical Center, Republic of Korea
| | - I Y Hwang
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J G Lee
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - Z W Park
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - W Y Oh
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J M Kim
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - S E Choi
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
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Abstract
Abstract
HOX genes are transcription factors that play important roles in body patterning and cell fate specification during normal development. Among of these, HOXB5, is involved in a variety of developmental processes, particularly during the enteric nervous system (ENS) development, and thus, abnormalities in HOXB5 function during embryo stages lead to Hirschsprung's disease. Importantly, many HOX genes, including HOXB5, are expressed not only during embryogenesis but also in adults and are dysregulated in various cancers. In a previous study, we found aberrant overexpression of HOXB5 in breast cancer tissues and cell lines and demonstrated that HOXB5 is important in the regulation of cell proliferation in breast cancer cells. Also, HOXB5 induces invasive potential through epithelial-mesenchymal transition (EMT). The relationship between HOXB5 and phenotypic changes in MCF7 breast cancer cells has been studied, however, HOXB5 functions as a transcription factor and its involvement in signaling pathways remain unclear. In this study, we selected putative downstream target genes of HOXB5, such as interleukin (IL)-6, Snail2 and epidermal growth factor receptor (EGFR) by PCR array analysis. These genes have been reported to be involved in cacner progression, which is characterised by increased growth speed and invasiveness of the tumor cells. Here, we discovered that HOXB5 transcriptionally upregulates the promoter activity of these genes. Chromatin immunoprecipitation (ChIP) analysis to confirm direct binding of HOXB5 to the promoter region is now ongoing. Since we found that HOXB5 induces EGFR protein expression and SRC phosphorylation, we will further investigate signaling pathway components to understand the underlying molecular mechanisms of HOXB5 action in breast cancer.
Citation Format: Kim JM, Lee J-Y, Kim MH. The role and regulation mechanism of HOXB5 in human breaset cancer cells [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-05-05.
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Affiliation(s)
- JM Kim
- Yonsei University College of Medicine, Seoul, Korea
| | - J-Y Lee
- Yonsei University College of Medicine, Seoul, Korea
| | - MH Kim
- Yonsei University College of Medicine, Seoul, Korea
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Kim MJ, Kim TH, Park Y, Lee HH, Kim JM, Lim H, Hwang SY. A study of the dietary intakes by the pre-pregnancy body mass index in pregnant women. CLIN EXP OBSTET GYN 2017; 44:27-29. [PMID: 29714861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The authors analyzed the difference in weight gain and nutrition, according to the BMI before pregnancy. They divided 91 subjects into BMI group I (normal weight) and BMI group 2 (overweight) before pregnancy. In general, the BMI before pregnancy did not influence weight gain but, in the BMI group 2, the intakes of all of cholesterol, total fatty acids, vitamin B 12, iron, and copper were significantly higher. Neither group exhibited sufficient intake of vitamin B 1, vitamin B2, niacin, vitamin B6, folic acid, calcium, magnesium, iron, or zinc. Pre-pregnancy weight management and nutrition during pregnancy is very important.
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Kim TH, Lee HH, Kim JM. Efficacy of computed tomography for the diagnosis of postpartum hemorrhage. CLIN EXP OBSTET GYN 2017; 44:244-246. [PMID: 29746031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The authors evaluated the diagnosis of the cause of post-partum haemorrhage (PPH) by computed tomography (CT). They retrospectively transferred 15 patients with PPH from local clinics between January 2010 and December 2011. CT revealed diverse causes. Only two cases had no additional finding on CT. They found deep tearing extending to the lower uterine segment and uterine artery in two cases, whereas five cases were an arteriovenous malformation, and one case was a uterine pseudoaneurysm.
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Bal J, Yun SH, Yeo SH, Kim JM, Kim BT, Kim DH. Effects of initial moisture content of Korean traditional wheat-based fermentation starter nuruk on microbial abundance and diversity. Appl Microbiol Biotechnol 2016; 101:2093-2106. [PMID: 27975136 DOI: 10.1007/s00253-016-8042-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/27/2016] [Accepted: 11/29/2016] [Indexed: 12/31/2022]
Abstract
The brewing of makgeolli, one of Korea's most popular alcoholic beverages that is gaining popularity globally, is facilitated by nuruk, a traditional Korean cereal starter. The nuruk microbiome greatly influences the fermentation process as well as the nutritional, hygienic, and aromatic qualities of the product. This study is a continuation of our efforts to examine nuruk biodiversity at a depth previously unattainable. In this study, microfloral dynamics in wheat-based nuruk C, composed of traditional ingredients such as barley, green gram, and wheat and fermented under various internal moisture contents of 20% (C20), 26% (C26), and 30% (C30), was evaluated using 454 pyrosequencing during the 30-day fermentation process. Rarefaction analysis and alpha diversity parameters indicated adequate sampling. C20 showed the greatest fungal richness and diversity, C20 and C26 exhibited similar bacterial richness and diversity, while C30 had low fungal and bacterial richness. Fungal taxonomic assignments revealed that the initial moisture content caused selective enrichment of Aspergillus candidus with a decreasing trend during fermentation, whereas Saccharomycetales sp. exhibited increasing relative abundance with increasing moisture content from day 6 of the fermentation process. Depending on initial moisture level, changes in bacterial communities were also observed in the genera Streptomyces, Bacillus, and Staphylococcus, with decreasing trends whereas Saccharopolyspora exhibited a sigmoidal trend with the highest abundance in C26. These findings demonstrate the possible impact of initial moisture content of nuruk on microfloral richness, diversity, and dynamics; this study is thus a step toward our ultimate goal of enhancing the quality of nuruk.
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Affiliation(s)
- Jyotiranjan Bal
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do, 561-756, Korea
| | - Suk-Hyun Yun
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do, 561-756, Korea
| | - Soo-Hwan Yeo
- Fermented Food Science Division, Department of Agrofood Resource, NAAS, RDA, Wanju-gun, Jeollabuk-do, 565-851, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Jeollabuk-do, 570-749, Korea
| | - Beom-Tae Kim
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do, 561-756, Korea
| | - Dae-Hyuk Kim
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do, 561-756, Korea.
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Choi YI, Jakhongir M, Choi SJ, Kim L, Park IS, Han JY, Kim JM, Chu YC. High-quality cell block preparation from scraping of conventional cytology slide: a technical report on a modified cytoscrape cell block technique. Malays J Pathol 2016; 38:295-304. [PMID: 28028300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Immunocytochemistry (ICC) on formalin-fixed paraffin embedded cell blocks is an ancillary tool commonly recruited for differential diagnoses of fine needle aspiration cytology (FNAC) samples. However, the quality of conventional cell blocks in terms of adequate cellularity and evenness of distribution of cytologic material is not always satisfactory for ICC. We introduce a modified agarose-based cytoscrape cell block (CCB) technique that can be effectively used for the preparation of cell blocks from scrapings of conventional FNAC slides. METHODS A decoverslipped FNAC slide was mounted with a small amount of water. The cytological material was scraped off the slide into a tissue mold by scraping with a cell scraper. The cytoscrape material was pelleted by centrifugation and pre-embedded in ultra-low gelling temperature agarose and then re-embedded in conventional agarose. The final agarose gel disk was processed and embedded in paraffin. RESULTS The quality of the ICC on the CCB sections was identical to that of the immunohistochemical stains on histological sections. By scrapping and harvesting the entirety of the cytological material off the cytology slide into a compact agarose cell button, we could avoid the risk of losing diagnostic material during the CCB preparation. CONCLUSION This modified CCB technique enables concentration and focusing of minute material while maintaining the entire amount of the cytoscrape material on the viewing spot of the CCB sections. We believe this technique can be effectively used to improve the level of confidence in diagnosis of FNAC especially when the FNAC slides are the only sample available.
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Affiliation(s)
- Y I Choi
- Inha University Hospital, Department of Pathology, 27, Inhang-ro, Jung-gu, Incheon, 22332, Rep. of Korea.
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Song HY, Choi HJ, Jeong H, Choi D, Kim DH, Kim JM. Viral Effects of a dsRNA Mycovirus (PoV-ASI2792) on the Vegetative Growth of the Edible Mushroom Pleurotus ostreatus. Mycobiology 2016; 44:283-290. [PMID: 28154486 PMCID: PMC5287161 DOI: 10.5941/myco.2016.44.4.283] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 11/28/2016] [Accepted: 11/28/2016] [Indexed: 05/29/2023]
Abstract
A double-stranded RNA (dsRNA) mycovirus was detected in malformed fruiting bodies of Pleurotus ostreatus strain ASI2792, one of bottle cultivated commercial strains of the edible oyster mushroom. The partial RNA-dependent RNA polymerase (RdRp) gene of the P. ostreatus ASI2792 mycovirus (PoV-ASI2792) was cloned, and a cDNA sequences alignment revealed that the sequence was identical to the RdRp gene of a known PoSV found in the P. ostreatus strain. To investigate the symptoms of PoV-ASI2792 infection by comparing the isogenic virus-free P. ostreatus strains with a virus-infected strain, isogenic virus-cured P. ostreatus strains were obtained by the mycelial fragmentation method for virus curing. The absence of virus was verified with gel electrophoresis after dsRNA-specific virus purification and Northern blot analysis using a partial RdRp cDNA of PoV-ASI2792. The growth rate and mycelial dry weight of virus-infected P. ostreatus strain with PoV-ASI2792 mycovirus were compared to those of three virus-free isogenic strains on 10 different media. The virus-cured strains showed distinctly higher mycelial growth rates and dry weights on all kinds of experimental culture media, with at least a 2.2-fold higher mycelial growth rate on mushroom complete media (MCM) and Hamada media, and a 2.7-fold higher mycelial dry weight on MCM and yeastmalt-glucose agar media than those of the virus-infected strain. These results suggest that the infection of PoV mycovirus has a deleterious effect on the vegetative growth of P. ostreatus.
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Affiliation(s)
- Ha-Yeon Song
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
| | - Hyo-Jin Choi
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
| | - Hansaem Jeong
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
| | - Dahye Choi
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
| | - Dae-Hyuk Kim
- Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Chonbuk National University, Jeonju 54896, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
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Yun SH, Lee SH, So KK, Kim JM, Kim DH. Incidence of diverse dsRNA mycoviruses in Trichoderma spp. causing green mold disease of shiitake Lentinula edodes. FEMS Microbiol Lett 2016; 363:fnw220. [PMID: 27664058 DOI: 10.1093/femsle/fnw220] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Revised: 05/28/2016] [Accepted: 09/22/2016] [Indexed: 11/14/2022] Open
Abstract
A total of 315 fungal isolates causing green mold disease were collected from contaminated artificial logs and sawdust bags used for cultivating shiitake Lentinula edodes in Korea and were analyzed for the presence of double-stranded RNA (dsRNA). dsRNA, which was purified using dsRNA-specific chromatography and verified by dsRNA-specific RNaseIII digestion, was detected in 32 isolates. The molecular taxonomy of dsRNA-infected isolates indicated that all isolates belonged to the Trichoderma spp.. The number and size of dsRNAs varied among isolates and the band patterns could be categorized into 15 groups. Although there were seven dsRNA groups observed in multiple isolates, eight groups were found to occur in single isolates. The most common dsRNA group, group VI, which contained a band of 10 kb, occurred in 10 isolates encompassing three species of Trichoderma. Partial sequence analysis of two selected dsRNA groups revealed a high degree of similarity to sequences of a RNA-dependent RNA polymerase, hypothetical protein and polyprotein genes of other hypoviruses such as Macrophomina phaseolina hypovirus 1, Trichoderma hypovirus, and Fusarium graminearum hypovirus 2, respectively, indicating the occurrence of mycoviruses in Trichoderma spp.. Northern blot analysis suggested that many different mycoviruses, which have not been identified yet, exist in Trichoderma.
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Affiliation(s)
- Suk-Hyun Yun
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea
| | - Song Hee Lee
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea
| | - Kum-Kang So
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Wonkwang University, Iksan, Chonbuk 570-749, Korea
| | - Dae-Hyuk Kim
- Department of Molecular Biology, Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea
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Bal J, Yun SH, Yeo SH, Kim JM, Kim DH. Metagenomic analysis of fungal diversity in Korean traditional wheat-based fermentation starter nuruk. Food Microbiol 2016; 60:73-83. [PMID: 27554148 DOI: 10.1016/j.fm.2016.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 05/17/2016] [Accepted: 07/01/2016] [Indexed: 11/29/2022]
Abstract
Nuruk, a traditional natural starter, is extensively used in the brewing of Makgeolli, one of Korea's most popular alcoholic beverages that has been recently gaining global popularity. Thus, the quality of traditional nuruk needs to be enhanced. The nuruk mycobiome greatly influences both fermentation process as well as palatability enhancement. Limitations of culture-dependent identification restrict an accurate analysis of fungal diversity and distribution in nuruks. 454 pyrosequencing of two traditional wheat-based nuruks, prepared at two representative temperature conditions revealed a total of 153 and 53 OTUs for nuruks A and B, respectively, from a total of 33,157 ITS sequences. Phylogenetic assignments indicated that nuruk A mycobiota was dominated by the genera Aspergillus and Mucorales, whereas nuruk B by Rhizomucor. Species-level identification indicated that Mucorales sp., Aspergillus candidus, and Aspergillus cibarius predominated in nuruk A mycoflora whereas Rhizomucor pusillus, Mucorales sp., and Thermoascus crustaceus in nuruk B. The alpha diversity indices suggest nuruk A mycobiota to be more diverse than that of nuruk B at almost all time points of fermentation. Resemblances of patterns of predominant species composition and succession between culture-dependent and -independent phylogenetic analysis creates the potential to reconstruct the nuruk mycobiome in vitro, which allows the establishment of a standard inoculum for scientific comparison.
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Affiliation(s)
- Jyotiranjan Bal
- Department of Molecular Biology, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea; Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea
| | - Suk-Hyun Yun
- Department of Molecular Biology, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea; Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea
| | - Soo-Hwan Yeo
- Fermented Food Science Division, Department of Agrofood Resource, NAAS, RDA, Wanju-gun, Jeollabuk-do 565-851, Republic of Korea
| | - Jung-Mi Kim
- Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Jeollabuk-do 570-749, Republic of Korea
| | - Dae-Hyuk Kim
- Department of Molecular Biology, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea; Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju, Jeollabuk-do 561-756, Republic of Korea.
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Yang MY, Kim JM, Kim GW, Mun JH, Song M, Ko HC, Kim BS, Kim HS, Kim MB. The clinical and histopathological characteristics of early-onset basal cell carcinoma in Asians. J Eur Acad Dermatol Venereol 2016; 31:75-80. [PMID: 27357061 DOI: 10.1111/jdv.13793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 05/02/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Basal cell carcinoma (BCC) is by far the most common cancer in white populations. In addition, recent reports have demonstrated an increasing incidence of BCC in Korea. We have observed a significant number of early-onset BCC cases in which the disease occurred in patients younger than 50 years. OBJECTIVE To investigate the clinicopathological characteristics of early-onset BCC in an Asian population, specifically in Koreans. METHODS One hundred and five patients with early-onset BCC were enrolled from a total of 1047 BCC patients who underwent surgery between January 1997 and December 2014 (942 patients over the age of 50 years were designated as the control group). RESULTS Early-onset BCC accounted for 10.03% of all 1047 cases and the incidence over time displayed an incremental trend. The early-onset group displayed similar results as the control group, with a predominance of female BCC patients and the majority of tumours displaying the following characteristics: small in size, occurring in sun-exposed areas and belonging to the noduloulcerative clinical subtype and nodular histopathological subtype. In comparison with a previous study in a Western population, the incidence of the disease in non-exposed areas of the body, as well as the proportion of tumours of the superficial histological subtype, were lower in Asian patients. CONCLUSION Although the clinicopathological characteristics of BCC are well-known, these characteristics have not been determined for early-onset BCC in an Asian population. Therefore, this study is the first report on early-onset BCC in Asians, specifically in a Korean patient group.
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Affiliation(s)
- M Y Yang
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - J M Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - G W Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - J H Mun
- Department of Dermatology, School of Medicine, Seoul National University, Seoul, Korea
| | - M Song
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - H C Ko
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - B S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - H S Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea
| | - M B Kim
- Department of Dermatology, School of Medicine, Pusan National University, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
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Abstract
The emergence of programmed death-ligand 1 (PD-L1)/programmed death-1 (PD-1)-targeted therapy has demonstrated the importance of the PD-L1 : PD-1 interaction in inhibiting anticancer T-cell immunity in multiple human cancers, generating durable responses and extended overall survival. However, not all patients treated with PD-L1/PD-1-targeted therapy experience tumor shrinkage, durable responses, or prolonged survival. To extend such benefits to more cancer patients, it is necessary to understand why some patients experience primary or secondary immune escape, in which the immune response is incapable of eradicating all cancer cells. Understanding immune escape from PD-L1/PD-1-targeted therapy will be important to the development of rational immune-combination therapy and predictive diagnostics and to the identification of novel immune targets. Factors that likely relate to immune escape include the lack of strong cancer antigens or epitopes recognized by T cells, minimal activation of cancer-specific T cells, poor infiltration of T cells into tumors, downregulation of the major histocompatibility complex on cancer cells, and immunosuppressive factors and cells in the tumor microenvironment. Precisely identifying and understanding these mechanisms of immune escape in individual cancer patients will allow for personalized cancer immunotherapy, in which monotherapy and combination immunotherapy are chosen based on the presence of specific immune biology. This approach may enable treatment with immunotherapy without inducing immune escape, resulting in a larger proportion of patients obtaining clinical benefit.
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Affiliation(s)
- J M Kim
- Genentech, South San Francisco
| | - D S Chen
- Genentech, South San Francisco Stanford Medical Oncology, Stanford University School of Medicine, Stanford, USA
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Kim JM, Lee JG, Yun SH, So KK, Ko YH, Kim YH, Park SM, Kim DH. A Mutant of the Bck1 Homolog from Cryphonectria parasitica Resulted in Sectorization with an Impaired Pathogenicity. Mol Plant Microbe Interact 2016; 29:268-276. [PMID: 26757242 DOI: 10.1094/mpmi-08-15-0185-r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
CpBck1, an ortholog of the cell-wall integrity mitogen-activated protein kinase kinase kinase of Saccharomyces cerevisiae, was cloned and characterized from the chestnut blight fungus Cryphonectria parasitica. The CpBck1-null mutant displayed cell wall integrity-related phenotypic changes such as abnormal cell morphology and wall formation and hypersensitivity to cell wall-disrupting agents. In addition, the mutant showed severely retarded growth without any sign of normal development, such as hyphal differentiation, conidiation, or pigmentation. As the culture proceeded, the mutant colony showed sporadic sectorization. Once sectored, the sectored phenotype of robust mycelial growth without differentiation was stably inherited. Compared with the wild type, both the parental CpBck1-null mutant and the sectored progeny exhibited marked impaired virulence. The present study revealed that a mutation in a signaling pathway component related to cell-wall integrity resulted in sporadic sectorization and these sectored phenotypes were stably inherited, suggesting that this signal transduction pathway is implicated in adaptive genetic changes for sectorization.
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Affiliation(s)
- Jung-Mi Kim
- 1 Department of Bio-Environmental Chemistry, Institute of Life Science and Natural Resources, Wonkwang University, Iksan, Chonbuk 570-749, Korea
| | - Joong-Gi Lee
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
| | - Suk-Hyun Yun
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
| | - Kum-Kang So
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
| | - Yo-Han Ko
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
| | - Young Ho Kim
- 3 Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea
| | - Seung-Moon Park
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
| | - Dae-Hyuk Kim
- 2 Institute for Molecular Biology and Genetics, Center for Fungal Pathogenesis, Department of Bioactive Material Sciences, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea; and
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Osborn CY, Mayberry LS, Kim JM. Medication adherence may be more important than other behaviours for optimizing glycaemic control among low-income adults. J Clin Pharm Ther 2016; 41:256-9. [PMID: 26939721 DOI: 10.1111/jcpt.12360] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 11/30/2022]
Abstract
WHAT IS KNOWN Patients with type 2 diabetes mellitus (T2DM) are required to perform multiple self-care behaviours to achieve and maintain optimal glycaemic control (HbA1c), which prevents complications and premature mortality. Patients with T2DM and low socioeconomic status (SES) are more likely to have suboptimal HbA1c, often due to being less adherent to recommended self-care activities than their higher-SES counterparts. OBJECTIVE Although studies support performing certain diabetes self-care behaviours for optimizing glycaemic control, there is limited research on the relative importance of each behaviour for this purpose. Identifying what behaviours are most important for HbA1c among low-SES patients with T2DM would be particularly useful for informing policy and intervention efforts for this high-risk group. METHODS In a cross-sectional study of 314 adults with T2DM and low SES, we used the Summary of Diabetes Self-Care Activities to assess self-care behaviours and multivariate models to test which behaviours were associated with lower HbA1c. RESULTS AND DISCUSSION Only medication adherence was significantly associated with lower HbA1c after adjusting for the other self-care behaviours (β = -0·14, P = 0·028) and further adjusting for demographic and diabetes characteristics (β = -0·16, P = 0·024). WHAT IS NEW Medication adherence may be the most important self-care behaviour for glycaemic control among adults with T2DM and low SES. CONCLUSION Focused efforts to improve medication adherence among low-SES patient populations may improve glycaemic control.
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Affiliation(s)
- C Y Osborn
- Vanderbilt University Medical Center, Nashville, TN, USA
| | - L S Mayberry
- Vanderbilt University Medical Center, Nashville, TN, USA
| | - J M Kim
- Texas A&M Health Science Center, Bryan, TX, USA
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Moon KH, Kim JM, Sohn Y, Cho DW, Kim YI, Avdeev M. Crystal structures and color properties of new complex perovskite oxynitrides AMg0.2Ta0.8O2.6N0.4 (A = Sr, Ba). Dalton Trans 2016; 45:5614-21. [DOI: 10.1039/c6dt00310a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perovskite oxynitrides via cooperative cation insertion and O/N exchange in layered oxide, for potential pigments and photocatalysts.
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Affiliation(s)
- Keon-Ho Moon
- Department of Energy Convergence Engineering
- Graduate School
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | - Jung-Mi Kim
- School of Chemistry and Biochemistry
- College of Sciences
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | - Youngku Sohn
- School of Chemistry and Biochemistry
- College of Sciences
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | - Dae Won Cho
- School of Chemistry and Biochemistry
- College of Sciences
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | - Young-Il Kim
- Department of Energy Convergence Engineering
- Graduate School
- Yeungnam University
- Gyeongsan 38541
- Republic of Korea
| | - Maxim Avdeev
- Bragg Institute
- Australian Nuclear Science and Technology Organisation
- Kirrawee DC
- Australia
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Koehler SM, Guerra SM, Kim JM, Sakamoto S, Lovy AJ, Hausman MR. Outcome of arthroscopic reduction association of the scapholunate joint. J Hand Surg Eur Vol 2016; 41:48-55. [PMID: 25827144 DOI: 10.1177/1753193415577335] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/05/2015] [Indexed: 02/03/2023]
Abstract
This study evaluates the arthroscopic reduction association scapholunate technique and outcomes. A total of 18 patients with chronic scapholunate instability with mean follow-up of 36 months were reviewed. Postoperatively, the mean visual analogue score was 2.5 and the mean DASH score was 8. The grip strength was 27 kg on the operative side compared with 32 kg on the uninjured side. The mean wrist flexion was 46° and extension was 56°. Seven patients had complications. Six patients had scapholunate joint widening, one had windshield-wipering of the screws with loss of reduction, and two demonstrated progression of scapholunate advanced collapse deformity. Four patients underwent revision surgeries: two revision arthroscopic reduction association scapholunates and two proximal row carpectomies. A preoperative scapholunate gap of greater than 5 mm and the presence of scapholunate advanced collapse Grade I were both predictive of a complication or revision surgery. Patients with a scapholunate gap of greater than 5 mm or scapholunate advanced collapse had statistically higher complications rates.Level of Evidence IV.
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Affiliation(s)
- S M Koehler
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
| | - S M Guerra
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
| | - J M Kim
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
| | - S Sakamoto
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
| | - A J Lovy
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
| | - M R Hausman
- Department of Orthopaedic Surgery, Mount Sinai Hospital, New York, NY, USA
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Kim JM, Kwon CHD, Joh JW, Han SB, Sinn DH, Choi GS, Kang ES, Lee JH, Kim GS, Lee SK. Case-matched comparison of ABO-incompatible and ABO-compatible living donor liver transplantation. Br J Surg 2015; 103:276-83. [PMID: 26695115 DOI: 10.1002/bjs.10048] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/29/2015] [Accepted: 10/07/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND ABO-incompatible (ABO-I) living donor liver transplantation (LDLT) has a high success rate. There are few detailed comparisons regarding biliary complications, infective complications and patient survival between ABO-compatible (ABO-C) and ABO-I LDLT. The aim was to compare the outcomes of ABO-I LDLT with those of ABO-C LDLT using the matched-pairs method. METHODS Patients who underwent ABO-I LDLT procedures between 2010 and 2013 were studied. They were matched for significant variables with patients who had ABO-C LDLT (1:2 matching). RESULTS Forty-seven ABO-I LDLT procedures were included. Ninety-four patients who had ABO-C LDLT were selected as a comparator group. The incidence of cytomegalovirus, bacterial and fungal infections during the first 3 months was similar after ABO-I LDLT and ABO-C LDLT (85 versus 76 per cent, 28 versus 37 per cent, and 13 versus 20 per cent, respectively). Antibody-mediated rejection occurred after two procedures within 2 weeks of transplantation, but liver function improved with plasma exchange in both patients. There were no differences in the rate of acute rejection and biliary complications between ABO-I and ABO-C groups (P = 0.478 and P = 0.511 respectively). Three patients who had ABO-I LDLT developed diffuse intrahepatic biliary complications and progressed to graft failure. The 1-, 2- and 3-year patient survival rates after ABO-I LDLT and ABO-C LDLT were 89 versus 87 per cent, 85 versus 83 per cent, and 85 versus 79 per cent, respectively. CONCLUSION The short-term outcomes of ABO-I LDLT were comparable to those of ABO-C LDLT in this study. ABO-I LDLT is an effective and safe transplant option with the potential to expand the pool of live donors.
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Affiliation(s)
- J M Kim
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - C H D Kwon
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S B Han
- Department of Anaesthesiology and Pain Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D H Sinn
- Division of Gastroenterology, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G-S Choi
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - E-S Kang
- Department of Laboratory Medicine and Genetics, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J H Lee
- Division of Gastroenterology, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - G S Kim
- Department of Anaesthesiology and Pain Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S-K Lee
- Department of Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea
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Lee JH, Subhadra B, Son YJ, Kim DH, Park HS, Kim JM, Koo SH, Oh MH, Kim HJ, Choi CH. Phylogenetic group distributions, virulence factors and antimicrobial resistance properties of uropathogenic Escherichia coli strains isolated from patients with urinary tract infections in South Korea. Lett Appl Microbiol 2015; 62:84-90. [PMID: 26518617 DOI: 10.1111/lam.12517] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 10/07/2015] [Accepted: 10/25/2015] [Indexed: 12/21/2022]
Abstract
UNLABELLED Urinary tract infections (UTIs) are one of the most common diseases by which humans seek medical help and are caused mainly by uropathogenic Escherichia coli (UPEC). Studying the virulence and antibiotic resistance of UPEC with respect to various phylogenetic groups is of utmost importance in developing new therapeutic agents. Thus, in this study, we analysed the virulence factors, antibiotic resistance and phylogenetic groups among various UPEC isolates from children with UTIs. The phylogenetic analysis revealed that majority of the strains responsible for UTIs belonged to the phylogenetic groups B2 and D. Of the 58 E. coli isolates, 79·31% belonged to group B2, 15·51% to group D, 3·44% to group A and 1·72% to B1. Simultaneously, the number of virulence factors and antibiotic resistance exhibited were also significantly high in groups B2 and D compared to other groups. Among the isolates, 44·8% were multidrug resistant and of that 73% belonged to the phylogenetic group B2, indicating the compatibility of antibiotic resistance and certain strains carrying virulence factor genes. The antibiotic resistance profiling of UPEC strains elucidates that the antimicrobial agents such as chloramphenicol, cefoxitin, cefepime, ceftazidime might still be used in the therapy for treating UTIs. SIGNIFICANCE AND IMPACT OF THE STUDY As the antibiotic resistance pattern of uropathogenic Escherichia coli varies depending on different geographical regions, the antibiotic resistance pattern from this study will help the physicians to effectively administer antibiotic therapy for urinary tract infections. In addition, the frequency of virulence factors and antibiotic resistance genes among various phylogenic groups could be effectively used to draw new targets for uropathogenic Escherichia coli antibiotic-independent therapies. The study emphasizes need of public awareness on multidrug resistance and for more prudent use of antimicrobials.
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Affiliation(s)
- J H Lee
- Department of Pediatrics, Chungnam National University Hospital, Daejeon, Korea
| | - B Subhadra
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Y-J Son
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - D H Kim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - H S Park
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - J M Kim
- Department of Pediatrics, Chungnam National University Hospital, Daejeon, Korea
| | - S H Koo
- Department of Laboratory Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - M H Oh
- Department of Nanobiomedical Science, Dankook University, Cheonan, Korea
| | - H-J Kim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - C H Choi
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, Korea
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