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Abstract
Massive death of cardiomyocytes is a major feature of cardiovascular diseases. Since the regenerative capacity of cardiomyocytes is limited, the regulation of their death has been receiving great attention. The cell death of cardiomyocytes is a complex mechanism that has not yet been clarified, and it is known to appear in various forms such as apoptosis, necrosis, etc. In ischemic heart disease, the apoptosis and necrosis of cardiomyocytes appear in two types of programmed forms (intrinsic and extrinsic pathways) and they account for a large portion of cell death. To repair damaged cardiomyocytes, diverse stem cell therapies have been attempted. However, despite the many positive effects, the low engraftment and survival rates have clearly limited the application of stem cells in clinical therapy. To solve these challenges, the introduction of the desired genes in stem cells can be used to enhance their capacity and improve their therapeutic efficiency. Moreover, as genome engineering technologies have advanced significantly, safer and more stable delivery of target genes and more accurate deletion of genes have become possible, which facilitates the genetic modification of stem cells. Accordingly, stem cell therapy for damaged cardiac tissue is expected to further improve. This review describes myocardial cell death, stem cell therapy for cardiac repair, and genome-editing technologies. In addition, we introduce recent stem cell therapies that incorporate genome-editing technologies in the myocardial infarction model. Graphical Abstract.
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Affiliation(s)
- Hyun-Min Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Gwanak-ro1, Gwanak-gu, Seoul, 151-742, South Korea
| | - Je-Yoel Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Gwanak-ro1, Gwanak-gu, Seoul, 151-742, South Korea.
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Kim H, Park CY, Cho HM, Yeo KH, Kim JH, Yu B, Go SJ, Kwon OS. Development of Korean Teaching Model for Surgical Procedures in Trauma -Essential Surgical Procedures in Trauma Course-. Journal of Trauma and Injury 2019. [DOI: 10.20408/jti.2018.051] [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)
- Hohyun Kim
- Department of Trauma Surgery, Pusan National University Hospital, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
| | - Chan-Yong Park
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
- Department of Trauma Surgery, Wonkwang University Hospital, Iksan, Korea
| | - Hyun-Min Cho
- Department of Trauma Surgery, Pusan National University Hospital, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
| | - Kwang-Hee Yeo
- Department of Trauma Surgery, Pusan National University Hospital, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
| | - Jae Hun Kim
- Department of Trauma Surgery, Pusan National University Hospital, Busan, Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
| | - Byungchul Yu
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
- Trauma Center, Gachon University Gil Medical Center, Incheon, Korea
| | - Seung-Je Go
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
- Department of Trauma Surgery, Trauma Center, Chungbuk National University Hospital, Cheongju, Korea
| | - Oh Sang Kwon
- Korean Association for Research, Procedure and Education on Trauma (KARPET), Seoul,Korea
- Traumatology, Regional Trauma Center, Cheju Halla General Hospital, Jeju, Korea
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Cho HM, Cho JY. Prediction of therapeutic effects of human cardiomyocytes in myocardial infarction using non-human primates model. Ann Transl Med 2019; 6:S64. [PMID: 30613639 DOI: 10.21037/atm.2018.10.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hyun-Min Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Je-Yoel Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
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Park JM, Hong JW, Son JS, Hwang YJ, Cho HM, You YH, Ghim SY. A strategy for securing unique microbial resources – focusing on Dokdo islands-derived microbial resources. Isr J Ecol Evol 2018. [DOI: 10.1163/22244662-20181024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This review focuses on the state of research on the microbial resources of Dokdo, Korea, as a strategy for securing national microbial resources. In the Korean peninsula, studies aimed at securing microbial resources are carried out across diverse natural environments, especially in the Dokdo islands. Until 2017, a total of 61 novel microbial genera, species, or newly recorded strains have been reported. Among these, 10 new taxa have had their whole genome sequenced and published, in order to find novel useful genes. Additionally, there have been multiple reports of bacteria with novel characteristics, including promoting plant growth or inducing systemic resistance in plants, calcite-forming ability, electrical activation, and production of novel enzymes. Furthermore, fundamental studies on microbial communities help to secure and define microbial resources in the Dokdo islands. This study will propose several tactics, based on ecological principles, for securing more microbial resources to cope with the current increase in international competition for biological resources.
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Affiliation(s)
- Jong Myong Park
- a School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University, Daegu 41566, Republic of Korea
- b Department of Infectious Disease Diagnosis, Incheon Institute of Public Health and Environment, Incheon 22320, Republic of Korea
| | - Ji Won Hong
- c Marine Plants Team, National Marine Biodiversity Institute of Korea, Seocheon 33662, Republic of Korea
| | - Jin-Soo Son
- a School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Ye-Ji Hwang
- a School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hyun-Min Cho
- d LOTTE Group R&D Center, Seoul 07594, Republic of Korea
| | - Young-Hyun You
- e Microoganism Resources Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Sa-Youl Ghim
- a School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University, Daegu 41566, Republic of Korea
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Lee E, Lee HA, Kim M, Do GY, Cho HM, Kim GJ, Jung H, Song JH, Cho JM, Kim I. Upregulation of C/EBPβ and TSC2 by an HDAC inhibitor CG200745 protects heart from DOCA-induced hypertrophy. Clin Exp Pharmacol Physiol 2018; 46:226-236. [PMID: 30099761 DOI: 10.1111/1440-1681.13022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 05/07/2018] [Revised: 07/19/2018] [Accepted: 08/06/2018] [Indexed: 11/30/2022]
Abstract
Histone deacetylases (HDACs) are a vast family divided into four major classes: class I (1, 2, 3, and 8), class II (4, 5, 6, 7, 9 and 10), class III (sirtuin family) and class IV (HDAC11). HDAC inhibition attenuates cardiac hypertrophy through suppression of the mechanistic target of rapamycin complex1 (mTORC1) signaling. HDAC inhibitors upregulate the expression of tuberous sclerosis complex 2 (TSC2), an mTORC1 inhibitor. However, the molecular mechanism underlying HDAC inhibitor-mediated upregulation of TSC2 is unclear. We hypothesized that an HDAC inhibitor, CG200745 (CG), ameliorates cardiac hypertrophy through the inhibition of mTORC1 signaling by upregulating of the CCAAT/enhancer-binding protein-β (C/EBP-β)/TSC2 pathway. To establish a cardiac hypertrophy model, deoxycorticosterone acetate (DOCA, 40 mg/kg/wk) was subcutaneously injected for 4 weeks into Sprague-Dawley rats. All rats were unilaterally nephrectomized and had free access to drinking water containing 1% NaCl with or without CG of different concentrations. The expression level of TSC2 and C/EBP-β was measured by quantitative real-time PCR (qRT-PCR) and western blot analysis. Acetylation of C/EBP-β was analyzed by immunoprecipitation. The recruitment of C/EBP-β and polymerase II (Pol II) on TSC2 promoter region was analyzed by chromatin immunoprecipitation (ChIP). CG treatment increased the expression of TSC2. In addition, CG treated rats showed an increased in the expression and acetylation of C/EBP-β, owing to the increase in the recruitment of C/EBP-β and Pol II at Tsc2 gene promoter. Thus, CG ameliorates cardiac hypertrophy through the inhibition of mTORC1 signaling via upregulation of the C/EBP-β/TSC2 pathway in DOCA-induced hypertensive rats.
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Affiliation(s)
- Eunjo Lee
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea.,Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,BK21 Plus KNU Biomedical Convergence program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hae-Ahm Lee
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea.,Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Mina Kim
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea.,Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,BK21 Plus KNU Biomedical Convergence program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Ga Young Do
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyun-Min Cho
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea.,Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Gun Jik Kim
- Department of Thoracic and Cardiovascular Surgery, Kyungpook National University Hospital, Daegu, Korea
| | - Hanna Jung
- Department of Thoracic and Cardiovascular Surgery, Kyungpook National University Hospital, Daegu, Korea
| | - Jung Hup Song
- Division of Public Health Medical Service, Kyungpook National University Hospital, Daegu, Korea
| | | | - Inkyeom Kim
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Korea.,Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, Korea.,BK21 Plus KNU Biomedical Convergence program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, Korea
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Diware MS, Ganorkar SP, Park K, Chegal W, Cho HM, Cho YJ, Kim YD, Kim H. Dielectric function, critical points, and Rydberg exciton series of WSe 2 monolayer. J Phys Condens Matter 2018; 30:235701. [PMID: 29714172 DOI: 10.1088/1361-648x/aac187] [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: 06/08/2023]
Abstract
The complex dielectric function ([Formula: see text]) of WSe2 monolayer grown by atomic layer deposition is investigated using spectroscopic ellipsometry. Band structure parameters are obtained by standard line-shape analysis of the second-energy-derivative of [Formula: see text] spectra. The fundamental band gap is observed at 2.26 eV, corresponds to transition between valence band (VB) maximum at the K point and conduction band (CB) minimum at Q point in the Brillouin zone (BZ). Two strong so-called A and B excitonic peaks in [Formula: see text] spectra originate from vertical transitions from spin-orbit split (0.43 eV) VB to CB at K point of the BZ. Binding energies of A and B exactions are 0.71 and 0.28 eV, respectively. Well resolved five excited excitons states has been detected within the spectral region between A and B. Energy profile of the Rydberg series shows significant deviation from the hydrogenic behavior, discussed in connection with the 2D hydrogen model. Results presented here will improve our understanding about the optical response of 2D materials and will help to design better optoelectronic applications and validate theoretical considerations.
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Affiliation(s)
- M S Diware
- CeNSCMR and Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
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Kim E, Rew HJ, Shin TK, Cho HM, Wickramasuriya SS, Yi YJ, Jeong J, Choi I, Heo JM. Standard Body Weight and Serum Estradiol and Progesterone Concentrations in Response to Total Lysine Content in Female Broiler Breeders from 14 to 42 Days after Hatch. Rev Bras Cienc Avic 2018. [DOI: 10.1590/1806-9061-2017-0586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- E Kim
- Chungnam National University, South Korea
| | - HJ Rew
- Chungnam National University, South Korea
| | - TK Shin
- Chonbuk National University, South Korea
| | - HM Cho
- Chungnam National University, South Korea
| | | | - YJ Yi
- Chonbuk National University, South Korea
| | - J Jeong
- Chungnam National University, South Korea
| | - I Choi
- Chungnam National University, South Korea
| | - JM Heo
- Chungnam National University, South Korea
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Lee HA, Kang SH, Kim M, Lee E, Cho HM, Moon EK, Kim I. Histone deacetylase inhibition ameliorates hypertension and hyperglycemia in a model of Cushing's syndrome. Am J Physiol Endocrinol Metab 2018; 314:E39-E52. [PMID: 28928236 DOI: 10.1152/ajpendo.00267.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cushing's syndrome (CS) caused by hypercortisolism is occasionally accompanied by metabolic disorders such as hypertension, diabetes mellitus (DM), dyslipidemia, and central obesity. Thus morbidity and mortality, observed in cardiovascular disease, are elevated in patients with CS. We hypothesized that HDAC inhibition (HDACi) decreased transcriptional activity of glucocorticoid receptor (GR), which ameliorates hypertension and hyperglycemia in patients with CS. To establish an animal model of hypercortisolism, Sprague-Dawley rats were infused with adrenocorticotropic hormone (ACTH, 40 ng/day) or dexamethasone (Dex, 10 μg/day) via osmotic minipumps for 4 wk. Expression of GR target genes was determined by quantitative real-time PCR (qRT-PCR). GR enrichment on specific loci, and across the whole genome, was analyzed by chromatin immunoprecipitation (ChIP) and ChIPseq, respectively. HDACi decreased blood pressure and expression of ion regulators in the kidneys of ACTH-infused rats. Additionally, HDACi reduced deposition of polysaccharide, fasting blood glucose level, glucose intolerance, and expression of gluconeogenesis genes in the livers and kidneys of ACTH- and Dex-infused rats. Among class I HDACs, HDAC1 and HDAC3 interacted with GR. HDAC1 knockdown resulted in increased level of acetylation and decreased transcriptional activity of GR. GR recruitment on the promoters of 2,754 genes, which include ion transporters, channels, and gluconeogenic genes, was significantly decreased by MS-275, a class I HDAC inhibitor. These results indicate that HDACi ameliorates hypertension and hyperglycemia in a model of CS by decreasing the transcriptional activity of GR via elevating its level of acetylation.
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Affiliation(s)
- Hae-Ahm Lee
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Seol-Hee Kang
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Mina Kim
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Eunjo Lee
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyun-Min Cho
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Eun-Kyung Moon
- Department of Medical Zoology, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Inkyeom Kim
- Department of Pharmacology, Cardiovascular Research Institute, Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu, Republic of Korea
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Kim M, Lee HA, Cho HM, Kang SH, Lee E, Kim IK. Histone deacetylase inhibition attenuates hepatic steatosis in rats with experimental Cushing's syndrome. Korean J Physiol Pharmacol 2017; 22:23-33. [PMID: 29302209 PMCID: PMC5746509 DOI: 10.4196/kjpp.2018.22.1.23] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/14/2017] [Accepted: 07/30/2017] [Indexed: 12/13/2022]
Abstract
Cushing's syndrome (CS) is a collection of symptoms caused by prolonged exposure to excess cortisol. Chronically elevated glucocorticoid (GC) levels contribute to hepatic steatosis. We hypothesized that histone deacetylase inhibitors (HDACi) could attenuate hepatic steatosis through glucocorticoid receptor (GR) acetylation in experimental CS. To induce CS, we administered adrenocorticotropic hormone (ACTH; 40 ng/kg/day) to Sprague-Dawley rats by subcutaneous infusion with osmotic mini-pumps. We administered the HDACi, sodium valproate (VPA; 0.71% w/v), in the drinking water. Treatment with the HDACi decreased steatosis and the expression of lipogenic genes in the livers of CS rats. The enrichment of GR at the promoters of the lipogenic genes, such as acetyl-CoA carboxylase (Acc), fatty acid synthase (Fasn), and sterol regulatory element binding protein 1c (Srebp1c), was markedly decreased by VPA. Pan-HDACi and an HDAC class I-specific inhibitor, but not an HDAC class II a-specific inhibitor, attenuated dexamethasone (DEX)-induced lipogenesis in HepG2 cells. The transcriptional activity of Fasn was decreased by pretreatment with VPA. In addition, pretreatment with VPA decreased DEX-induced binding of GR to the glucocorticoid response element (GRE). Treatment with VPA increased the acetylation of GR in ACTH-infused rats and DEX-induced HepG2 cells. Taken together, these results indicate that HDAC inhibition attenuates hepatic steatosis hrough GR acetylation in experimental CS.
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Affiliation(s)
- Mina Kim
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cardiovascular Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu 41944, Korea
| | - Hae-Ahm Lee
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cardiovascular Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea
| | - Hyun-Min Cho
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea
| | - Seol-Hee Kang
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cardiovascular Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu 41944, Korea
| | - Eunjo Lee
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cardiovascular Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu 41944, Korea
| | - In Kyeom Kim
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cardiovascular Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu 41944, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University School of Medicine, Daegu 41944, Korea
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Park JM, You YH, Cho HM, Hong JW, Ghim SY. Foodborne Infectious Diseases Mediated by Inappropriate Infection Control in Food Service Businesses and Relevant Countermeasures in Korea. Osong Public Health Res Perspect 2017; 8:159-168. [PMID: 28781938 PMCID: PMC5525567 DOI: 10.24171/j.phrp.2017.8.3.02] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/10/2017] [Accepted: 06/28/2017] [Indexed: 11/12/2022] Open
Abstract
Objectives The objective of this review is to propose an appropriate course of action for improving the guidelines followed by food handlers for control of infection. For this purpose, previous epidemiological reports related to acute gastroenteritis in food service businesses mediated by food handlers were intensively analyzed. Methods Relevant studies were identified in international databases. We selected eligible papers reporting foodborne infectious disease outbreaks. Among primary literature collection, the abstract of each article was investigated to find cases that absolutely identified a causative factor to be food handlers’ inappropriate infection control and the taxon of causative microbial agents by epidemiological methodologies. Information about the sites (type of food business) where the outbreaks occurred was investigated. Results A wide variety of causative microbial agents has been investigated, using several epidemiological methods. These agents have shown diverse propagation pathways based on their own molecular pathogenesis, physiology, taxonomy, and etiology. Conclusion Depending on etiology, transmission, propagation, and microbiological traits, we can predict the transmission characteristics of pathogens in food preparation areas. The infected food workers have a somewhat different ecological place in infection epidemiology as compared to the general population. However, the current Korean Food Safety Act cannot propose detailed guidelines. Therefore, different methodologies have to be made available to prevent further infections.
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Affiliation(s)
- Jong Myong Park
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Institute for Microorganisms, Kyungpook National University, Daegu, Korea
| | - Young-Hyun You
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, Korea
| | - Hyun-Min Cho
- School of Biological Sciences, Seoul National University, Seoul, Korea
| | - Ji Won Hong
- Marine Plants Team, National Marine Biodiversity Institute of Korea, Seocheon, Korea
| | - Sa-Youl Ghim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Institute for Microorganisms, Kyungpook National University, Daegu, Korea
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Yoo J, Yi YJ, Wickramasuriya SS, Kim E, Shin TK, Cho HM, Kim N, Heo JM. Evaluation of sulphur amino acid requirement of male Korean native ducklings from hatch to 21 day of age. Br Poult Sci 2017; 58:272-277. [PMID: 28100065 DOI: 10.1080/00071668.2017.1280722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. A dose-response experiment was conducted with male Korean native ducklings (KND) to evaluate the total sulphur amino acid (TSAA) requirement from hatch to 21 d of age. 2. A completely randomised design with 7 dietary TSAA concentrations (0.62%, 0.65%, 0.68%, 0.71%, 0.74%, 0.77% and 0.80%) were used with 6 replications per treatment. 3. Body weight (BW) and feed intake were measured weekly to calculate average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR). One duckling per pen (n = 6) was killed by cervical dislocation to weigh empty body and drumsticks at the conclusion of experiment. 4. BW was improved significantly with increasing TSAA content, in a non-linear manner. A significant decrease of FCR was shown with increasing TSAA contents. TSAA requirement was determined by taking a mean value after fitting the data to both a linear-plateau and a quadratic-plateau model. Estimated TSAA requirements were 0.70%, 0.70%, 0.66% and 0.70% for the maximum BW, ADG and ADFI and for the minimum FCR, respectively. Increasing TSAA content improved quantity of full body weight (FBW), empty body weight (EBW) and drumstick weight (DSW), but there was no effect on proportion of DSW in relation to EBW and proportion of EBW to FBW. 5. In conclusion, the growth of male KND during 1 to 21 d of age was improved with increasing TSAA content, suggesting optimal TSAA requirements estimated by two analysis models.
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Affiliation(s)
- J Yoo
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - Y J Yi
- b Division of Biotechnology , Chonbuk National University , Iksan 54596 , South Korea
| | - S S Wickramasuriya
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - E Kim
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - T K Shin
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - H M Cho
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - N Kim
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
| | - J M Heo
- a Department of Animal Science and Biotechnology , Chungnam National University , Daejeon 34134 , South Korea
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Cho HM, Kim PH, Chang HK, Shen YM, Bonsra K, Kang BJ, Yum SY, Kim JH, Lee SY, Choi MC, Kim HH, Jang G, Cho JY. Targeted Genome Engineering to Control VEGF Expression in Human Umbilical Cord Blood-Derived Mesenchymal Stem Cells: Potential Implications for the Treatment of Myocardial Infarction. Stem Cells Transl Med 2017; 6:1040-1051. [PMID: 28186692 PMCID: PMC5442764 DOI: 10.1002/sctm.16-0114] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 08/11/2016] [Accepted: 09/01/2016] [Indexed: 12/19/2022] Open
Abstract
Human umbilical cord blood‐derived mesenchymal stem cells (hUCB‐MSCs) exhibit potency for the regeneration of infarcted hearts. Vascular endothelial growth factor (VEGF) is capable of inducing angiogenesis and can boost stem cell‐based therapeutic effects. However, high levels of VEGF can cause abnormal blood vessel growth and hemangiomas. Thus, a controllable system to induce therapeutic levels of VEGF is required for cell therapy. We generated an inducible VEGF‐secreting stem cell (VEGF/hUCB‐MSC) that controls the expression of VEGF and tested the therapeutic efficacy in rat myocardial infarction (MI) model to apply functional stem cells to MI. To introduce the inducible VEGF gene cassette into a safe harbor site of the hUCB‐MSC chromosome, the transcription activator‐like effector nucleases system was used. After confirming the integration of the cassette into the locus, VEGF secretion in physiological concentration from VEGF/hUCB‐MSCs after doxycycline (Dox) induction was proved in conditioned media. VEGF secretion was detected in mice implanted with VEGF/hUCB‐MSCs grown via a cell sheet system. Vessel formation was induced in mice transplanted with Matrigel containing VEGF/hUCB‐MSCs treated with Dox. Moreover, seeding of the VEGF/hUCB‐MSCs onto the cardiac patch significantly improved the left ventricle ejection fraction and fractional shortening in a rat MI model upon VEGF induction. Induced VEGF/hUCB‐MSC patches significantly decreased the MI size and fibrosis and increased muscle thickness, suggesting improved survival of cardiomyocytes and protection from MI damage. These results suggest that our inducible VEGF‐secreting stem cell system is an effective therapeutic approach for the treatment of MI. Stem Cells Translational Medicine2017;6:1040–1051
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Affiliation(s)
- Hyun-Min Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Pyung-Hwan Kim
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Hyun-Kyung Chang
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Yi-Ming Shen
- Department of Veterinary Pharmacology, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Kwaku Bonsra
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, South Korea
| | - Byung-Jae Kang
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Soo-Young Yum
- Department of Veterinary Clinical Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Joo-Hyun Kim
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - So-Yeong Lee
- Department of Veterinary Pharmacology, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Min-Cheol Choi
- Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Hyongbum Henry Kim
- Department of Pharmacology, College of Medicine, Yonsei University, Seoul, South Korea
| | - Goo Jang
- Department of Veterinary Clinical Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Je-Yoel Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
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Hwang Y, Choi HS, Cho HM, Cho HT. Tracheophytes Contain Conserved Orthologs of a Basic Helix-Loop-Helix Transcription Factor That Modulate ROOT HAIR SPECIFIC Genes. Plant Cell 2017; 29:39-53. [PMID: 28087829 PMCID: PMC5304353 DOI: 10.1105/tpc.16.00732] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/05/2016] [Accepted: 01/11/2017] [Indexed: 05/21/2023]
Abstract
ROOT HAIR SPECIFIC (RHS) genes, which contain the root hair-specific cis-element (RHE) in their regulatory regions, function in root hair morphogenesis. Here, we demonstrate that an Arabidopsis thaliana basic helix-loop-helix transcription factor, ROOT HAIR DEFECTVE SIX-LIKE4 (RSL4), directly binds to the RHE in vitro and in vivo, upregulates RHS genes, and stimulates root hair formation in Arabidopsis. Orthologs of RSL4 from a eudicot (poplar [Populus trichocarpa]), a monocot (rice [Oryza sativa]), and a lycophyte (Selaginella moellendorffii) each restored root hair growth in the Arabidopsis rsl4 mutant. In addition, the rice and S. moellendorffii RSL4 orthologs bound to the RHE in in vitro and in vivo assays. The RSL4 orthologous genes contain RHEs in their promoter regions, and RSL4 was able to bind to its own RHEs in vivo and amplify its own expression. This process likely provides a positive feedback loop for sustainable root hair growth. When RSL4 and its orthologs were expressed in cells in non-root-hair positions, they induced ectopic root hair growth, indicating that these genes are sufficient to specify root hair formation. Our results suggest that RSL4 mediates root hair formation by regulating RHS genes and that this mechanism is conserved throughout the tracheophyte (vascular plant) lineage.
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Affiliation(s)
- Youra Hwang
- Department of Biological Sciences and Plant Genomics and Breeding Institute, Seoul National University, Seoul 151-742, Korea
| | - Hee-Seung Choi
- Department of Biological Sciences and Plant Genomics and Breeding Institute, Seoul National University, Seoul 151-742, Korea
| | - Hyun-Min Cho
- Department of Biological Sciences and Plant Genomics and Breeding Institute, Seoul National University, Seoul 151-742, Korea
| | - Hyung-Taeg Cho
- Department of Biological Sciences and Plant Genomics and Breeding Institute, Seoul National University, Seoul 151-742, Korea
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Chang HK, Kim PH, Cho HM, Yum SY, Choi YJ, Son Y, Lee D, Kang I, Kang KS, Jang G, Cho JY. Inducible HGF-secreting Human Umbilical Cord Blood-derived MSCs Produced via TALEN-mediated Genome Editing Promoted Angiogenesis. Mol Ther 2016; 24:1644-54. [PMID: 27434585 PMCID: PMC5113099 DOI: 10.1038/mt.2016.120] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [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: 03/10/2016] [Accepted: 06/02/2016] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stem cells (MSCs) promote therapeutic angiogenesis to cure serious vascular disorders. However, their survival period and cytokine-secretory capacity are limited. Although hepatocyte growth factor (HGF) can accelerate the rate of angiogenesis, recombinant HGF is limited because of its very short half-life (<3–5 minutes). Thus, continuous treatment with HGF is required to obtain an effective therapeutic response. To overcome these limitations, we produced genome-edited MSCs that secreted HGF upon drug-specific induction. The inducible HGF expression cassette was integrated into a safe harbor site in an MSC chromosome using the TALEN system, resulting in the production of TetOn-HGF/human umbilical cord blood-derived (hUCB)-MSCs. Functional assessment of the TetOn-HGF/hUCB-MSCs showed that they had enhanced mobility upon the induction of HGF expression. Moreover, long-term exposure by doxycycline (Dox)-treated TetOn-HGF/hUCB-MSCs enhanced the anti-apoptotic responses of genome-edited MSCs subjected to oxidative stress and improved the tube-formation ability. Furthermore, TetOn-HGF/hUCB-MSCs encapsulated by arginine-glycine-aspartic acid (RGD)-alginate microgel induced to express HGF improved in vivo angiogenesis in a mouse hindlimb ischemia model. This study showed that the inducible HGF-expressing hUCB-MSCs are competent to continuously express and secrete HGF in a controlled manner. Thus, the MSCs that express HGF in an inducible manner are a useful therapeutic modality for the treatment of vascular diseases requiring angiogenesis.
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Affiliation(s)
- Hyun-Kyung Chang
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Pyung-Hwan Kim
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea.,Current address: Department of Biomedical Laboratory Science, College of Medical Science, Konyang University, Daejeon, South Korea
| | - Hyun-Min Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Soo-Young Yum
- Department of Veterinary Clinical Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Young-Jin Choi
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - YeonSung Son
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - DaBin Lee
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - InSung Kang
- Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Kyung-Sun Kang
- Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Goo Jang
- Department of Veterinary Clinical Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Je-Yoel Cho
- Department of Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
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Je UK, Cho HM, Hong DK, Cho HS, Park YO, Park CK, Kim KS, Lim HW, Kim GA, Park SY, Woo TH, Cho SI. 3D reconstruction based on compressed-sensing (CS)-based framework by using a dental panoramic detector. Phys Med 2015; 32:213-7. [PMID: 26494155 DOI: 10.1016/j.ejmp.2015.09.005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/22/2015] [Accepted: 09/24/2015] [Indexed: 10/22/2022] Open
Abstract
In this work, we propose a practical method that can combine the two functionalities of dental panoramic and cone-beam CT (CBCT) features in one by using a single panoramic detector. We implemented a CS-based reconstruction algorithm for the proposed method and performed a systematic simulation to demonstrate its viability for 3D dental X-ray imaging. We successfully reconstructed volumetric images of considerably high accuracy by using a panoramic detector having an active area of 198.4 mm × 6.4 mm and evaluated the reconstruction quality as a function of the pitch (p) and the angle step (Δθ). Our simulation results indicate that the CS-based reconstruction almost completely recovered the phantom structures, as in CBCT, for p≤2.0 and θ≤6°, indicating that it seems very promising for accurate image reconstruction even for large-pitch and few-view data. We expect the proposed method to be applicable to developing a cost-effective, volumetric dental X-ray imaging system.
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Affiliation(s)
- U K Je
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - H M Cho
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - D K Hong
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - H S Cho
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea.
| | - Y O Park
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - C K Park
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - K S Kim
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - H W Lim
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - G A Kim
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - S Y Park
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - T H Woo
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
| | - S I Cho
- Department of Radiation Convergence Engineering, iTOMO Research Group, Yonsei University, Wonju 220-710, Republic of Korea
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Lee HY, Jung JH, Cho HM, Kim SH, Lee KM, Kim HJ, Lee JH, Shim BY. GRP78 Protein Expression as Prognostic Values in Neoadjuvant Chemoradiotherapy and Laparoscopic Surgery for Locally Advanced Rectal Cancer. Cancer Res Treat 2015; 47:804-12. [PMID: 25687871 PMCID: PMC4614215 DOI: 10.4143/crt.2014.121] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 05/24/2014] [Accepted: 10/06/2014] [Indexed: 01/09/2023] Open
Abstract
Purpose We investigated the relationships between biomarkers related to endoplasmic reticulum stress proteins (glucose-regulated protein of molecular mass 78 [GRP78] and Cripto-1 [teratocarcinoma-derived growth factor 1 protein]), pathologic response, and prognosis in locally advanced rectal cancer. Materials and Methods All clinical stage II and III rectal cancer patients received 50.4 Gy over 5.5 weeks, plus 5-fluorouracil (400 mg/m2/day) and leucovorin (20 mg/m2/day) bolus on days 1 to 5 and 29 to 33, and surgery was performed at 7 to 10 weeks after completion of all therapies. Expression of GRP78 and Cripto-1 proteins was determined by immunohistochemistry and was assessed in 101 patients with rectal cancer treated with neoadjuvant chemoradiotherapy (CRT). Results High expression of GRP78 and Cripto-1 proteins was observed in 86 patients (85.1%) and 49 patients (48.5%), respectively. Low expression of GRP78 protein was associated with a significantly high rate of down staging (80.0% vs. 52.3%, respectively; p=0.046) and a significantly low rate of recurrence (0% vs. 33.7%, respectively; p=0.008) compared with high expression of GRP78 protein. Mean recurrence-free survival according to GRP78 expression could not be estimated because the low expression group did not develop recurrence events but showed a significant correlation with time to recurrence, based on the log rank method (p=0.007). GRP78 also showed correlation with overall survival, based on the log rank method (p=0.045). Conclusion GRP78 expression is a predictive and prognostic factor for down staging, recurrence, and survival in rectal cancer patients treated with 5-fluorouracil and leucovorin neoadjuvant CRT.
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Affiliation(s)
- Hee Yeon Lee
- Department of Medical Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Ji-Han Jung
- Department of Hospital Pathology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Hyun-Min Cho
- Department of General Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Sung Hwan Kim
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Kang-Moon Lee
- Department of Gastroenterology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Hyung-Jin Kim
- Department of General Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Jong Hoon Lee
- Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Byoung Yong Shim
- Department of Medical Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
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Nishimoto HK, Ha K, Jones JR, Dwivedi A, Cho HM, Layman LC, Kim HG. The historical Coffin-Lowry syndrome family revisited: identification of two novel mutations of RPS6KA3 in three male patients. Am J Med Genet A 2014; 164A:2172-9. [PMID: 25044551 DOI: 10.1002/ajmg.a.36488] [Citation(s) in RCA: 15] [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: 09/15/2013] [Accepted: 01/19/2014] [Indexed: 11/12/2022]
Abstract
Coffin-Lowry syndrome (CLS) is a rare X-linked dominant disorder characterized by intellectual disability, craniofacial abnormalities, short stature, tapering fingers, hypotonia, and skeletal malformations. CLS is caused by mutations in the Ribosomal Protein S6 Kinase, 90 kDa, Polypeptide 3 (RPS6KA3) gene located at Xp22.12, which encodes Ribosomal S6 Kinase 2 (RSK2). Here we analyzed RPS6KA3 in three unrelated CLS patients including one from the historical Coffin-Lowry syndrome family and found two novel mutations. To date, over 140 mutations in RPS6KA3 have been reported. However, the etiology of the very first familial case, which was described in 1971 by Lowry with detailed phenotype and coined the term CLS, has remained unknown. More than 40 years after the report, we succeeded in identifying deposited fibroblast cells from one patient of this historic family and found a novel heterozygous 216 bp in-frame deletion, encompassing exons 15 and 16 of RPS6KA3. Drop episodes in CLS patients were reported to be associated with truncating mutations deleting the C-terminal kinase domain (KD), and only one missense mutation and one single basepair duplication involving the C-terminal KD of RSK2 in the patients with drop episode have been reported thus far. Here we report the first in-frame deletion in C-terminal KD of RPS6KA3 in a CLS patient with drop episodes.
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Affiliation(s)
- Hiromi Koso Nishimoto
- Section of Reproductive Endocrinology, Infertility & Genetics, Department of Obstetrics and Gynecology, Institute of Molecular Medicine and Genetics, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
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Kim JW, Shim JS, Kwak MG, Hong SJ, Cho HM. Application of rapid milling technology for fabrication of SiC nanoparticles. J Nanosci Nanotechnol 2013; 13:6064-6068. [PMID: 24205600 DOI: 10.1166/jnn.2013.7656] [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: 06/02/2023]
Abstract
SiC nanoparticles were successfully fabricated by a high energy ball milling method, so that can be used in the printed electronics to make SiC thin film patterns. Here we utilized the waste of Si sludge for making the SiC nanoparticles. In order to achieve uniform thin film from the nanoparticle ink, fine sized SiC nanoparticles less than 100 nm has to be uniformly dispersed. In this study, we employed the ultra apex milling (UAM) system for particle comminution and dispersion. We investigated the effects of milling parameters, e.g., size of ZrO2 bead and milling time. The size of the SiC particles reached about 103 nm after 4 hours of UAM, when the ZrO2 beads of 50 microm were used. Then SiC ink was formulated with organic solvents and a dispersing agent. A specially designed pattern was printed by an ink-jet printer for evaluating the feasibility of the SiC nanoparticle inks.
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Affiliation(s)
- Jong-Woong Kim
- Display Components and Materials Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi-do 463-816, Korea
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Kim JW, Shim JS, Maeng C, Kim YS, Ahn J, Kwak MG, Hong SJ, Cho HM. Fabrication of SiC nanoparticles by physical milling for ink-jet printing. J Nanosci Nanotechnol 2013; 13:5586-5589. [PMID: 23882799 DOI: 10.1166/jnn.2013.7062] [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: 06/02/2023]
Abstract
Here we tried to show the possibility of mechanical milling method for fabrication of SiC nanoparticles and ink-jet printing method to make SiC patterns for use as several applications, e.g., micro hotplates. Planetary milling was employed to fabricate the nano-scale SiC particles from coarse powders. After 100 hours of milling, the size of the SiC particles decreased to about 100 nm, which was sufficient for the formulation of ink for ink-jet printing. The SiC particles were dispersed in an ink system consisted of ethylene glycol and ethanol with a small amount of additives. The ink with SiC nanoparticles could be successfully printed on an alumina substrate by the ink-jet printing method.
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Affiliation(s)
- Jong-Woong Kim
- Display Components and Materials Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi-do, Republic of Korea
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Choi JH, Hwang JJ, Cho HM, Lee TY. Extended aortic arch replacement through the L-incision approach. Korean J Thorac Cardiovasc Surg 2013; 46:216-9. [PMID: 23772411 PMCID: PMC3680609 DOI: 10.5090/kjtcs.2013.46.3.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/05/2012] [Accepted: 11/14/2012] [Indexed: 11/16/2022]
Abstract
There are various methods for approaching the aortic arch, such as median sternotomy or lateral thoracotomy. However, accessing the site of distal anastomosis is problematic when the distal arch is extensively involved. We report a case of extended aortic arch replacement and coronary artery bypass through the L-incision approach.
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Affiliation(s)
- Jin-Ho Choi
- Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Korea
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Lee HA, Lee DY, Cho HM, Kim SY, Iwasaki Y, Kim IK. Histone Deacetylase Inhibition Attenuates Transcriptional Activity of Mineralocorticoid Receptor Through Its Acetylation and Prevents Development of Hypertension. Circ Res 2013; 112:1004-12. [DOI: 10.1161/circresaha.113.301071] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
Inhibition of histone deacetylases (HDACs) results in attenuated development of hypertension in deoxycorticosterone acetate–induced hypertensive rats and spontaneously hypertensive rats. However, the molecular mechanism remains elusive.
Objective:
We hypothesized that HDAC inhibition attenuates transcriptional activity of mineralocorticoid receptor (MR) through its acetylation and prevents development of hypertension in deoxycorticosterone acetate–induced hypertensive rats.
Methods and Results:
Expression of MR target genes was measured by quantitative real-time polymerase chain reaction. Recruitment of MR and RNA polymerase II on promoters of target genes was analyzed by chromatin immunoprecipitation assay. Live cell imaging was performed for visualization of nuclear translocation of MR. MR acetylation was determined by Western blot with anti-acetyl-lysine antibody after immunoprecipitation with anti-MR antibody. Transcriptional activity of MR was determined by luciferase assay. For establishment of a hyperaldosteronism animal, Sprague-Dawley rats underwent uninephrectomy and received subcutaneous injection of 40 mg/kg per week of deoxycorticosterone acetate and drinking water containing 1% NaCl. Treatment with a HDAC class I inhibitor resulted in reduced expression of MR target genes in accordance with reduced recruitment of MR and RNA polymerase II on promoters of target genes. HDAC inhibition promoted MR acetylation, leading to decreased transcriptional activity of MR. Knockdown or inhibition of HDAC3 resulted in reduced expression of MR target genes induced by mineralocorticoids.
Conclusions:
These results indicate that HDAC inhibition attenuates transcriptional activity of MR through its acetylation and prevents development of hypertension in deoxycorticosterone acetate–induced hypertensive rats.
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Affiliation(s)
- Hae-Ahm Lee
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
| | - Dong-Youb Lee
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
| | - Hyun-Min Cho
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
| | - Sang-Yeob Kim
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
| | - Yasumasa Iwasaki
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
| | - In Kyeom Kim
- From the Department of Pharmacology (H.-A.L., D.-Y.L., H.-M.C., I.K.), Cardiovascular Research Institute (H.-A.L., I.K.), Cell and Matrix Research Institute (H.-A.L., S.-Y.K., I.K.), and Department of Biochemistry and Cell Biology (S.-Y.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea; and Department of Endocrinology, Metabolism and Nephrology, Kochi Medical School, Kochi University, Nankoku, Japan (Y.I.)
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Kong CG, Cho HM, Suhl KH, Kim MU, In Y. Patellar tracking after total knee arthroplasty performed without lateral release. Knee 2012; 19:692-5. [PMID: 22004835 DOI: 10.1016/j.knee.2011.09.007] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 08/13/2011] [Accepted: 09/12/2011] [Indexed: 02/02/2023]
Abstract
There is limited clinical data on patellar maltracking in patients who have undergone total knee arthroplasty (TKA) without lateral release. We performed a retrospective review of 191 consecutive TKAs performed by one surgeon through the subvastus approach without lateral release from 2007 to 2008. Radiographic measurements were made using the preoperative and postoperative 2 years radiographs. Multivariate logistic regression analysis was performed to determine the risk factors for patellar maltracking after TKA performed without lateral release. TKA resulted in increases in the patellar tilt and displacement (P<0.05). The presence of preoperative patellar tilt and displacement were predictive of postoperative patellar tilt and displacement in patients who underwent TKA through the subvastus approach without lateral release (P<0.05).
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Affiliation(s)
- Chae-Gwan Kong
- Department of Orthopedic Surgery, Uijongbu St. Mary's Hospital, The Catholic University of Korea, Uijongbu-Si, Kyonggi-Do, Republic of Korea
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Cho HM, Lee DY, Kim HY, Lee HA, Seok YM, Kim IK. Upregulation of the Na+-K+-2Cl− cotransporter 1 via histone modification in the aortas of angiotensin II-induced hypertensive rats. Hypertens Res 2012; 35:819-24. [DOI: 10.1038/hr.2012.37] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Lee HA, Cho HM, Lee DY, Kim KC, Han HS, Kim IK. Tissue-Specific Upregulation of Angiotensin-Converting Enzyme 1 in Spontaneously Hypertensive Rats Through Histone Code Modifications. Hypertension 2012; 59:621-6. [DOI: 10.1161/hypertensionaha.111.182428] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The renin-angiotensin system has been implicated in the development of hypertension and damages several organs. The expressions of the components of a local renin-angiotensin system (RAS) in the hypertensive rats differ from those of the normotensive rats. We hypothesized that local tissue-specific upregulation of angiotensin-converting enzyme 1 (ACE1) in hypertension is caused by epigenetic changes. Adrenal gland, aorta, heart, kidney, liver, and lung tissues were excised from normotensive Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHRs).
Ace1
mRNA and protein expressions were measured by real-time PCR and Western blot, respectively. Promoter methylation was revealed by bisulfite sequencing. Histone modifications, such as histone 3 acetylation (H3Ac), fourth lysine trimethylation (H3K4me3), and ninth lysine dimethylation (H3K9me2), were quantified by chromatin immunoprecipitation (ChIP), followed by real-time PCR. The expressions and associations of chromatin remodeling genes were analyzed by real-time PCR and ChIP, respectively. Local tissues from SHRs showed higher expressions of
Ace1
mRNA and protein than those from the WKY rats.
Ace1
promoter was mostly unmethylated in all of the tissues from both strains. The
Ace1
promoter regions of SHR tissues were more enriched with H3Ac and H3K4me3, except in the lungs. The adrenal glands, hearts, and kidneys of SHRs showed less enrichment with H3K9me2. Valsartan treatment in SHRs decreased local
Ace1
mRNA and protein expressions, which were accompanied by higher H3K9me2, as well as less H3Ac and H3K4me3. In conclusion, ACE1 is upregulated in local tissues of SHRs via histone code modifications.
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Affiliation(s)
- Hae-Ahm Lee
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyun-Min Cho
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Dong-Youb Lee
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Kee-Chul Kim
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyung Soo Han
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - In Kyeom Kim
- From the Department of Pharmacology (H.-A.L., H.-M.C., D.-Y.L., I.K.K.), Cardiovascular Research Institute (H.-A.L., K.-C.K., I.K.K.), Department of Physiology (H.S.H.), and Cell and Matrix Research Institute (H.-A.L., I.K.K.), Kyungpook National University School of Medicine, Daegu, Republic of Korea
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Cho HM, Lee HA, Kim HY, Han HS, Kim IK. Expression of Na+-K+ -2Cl- cotransporter 1 is epigenetically regulated during postnatal development of hypertension. Am J Hypertens 2011; 24:1286-93. [PMID: 21814290 DOI: 10.1038/ajh.2011.136] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The expression of Na(+)-K(+)-2Cl(-) cotransporter 1 (NKCC1) is upregulated in spontaneously hypertensive rat (SHR). We investigated whether expression of NKCC1 is epigenetically regulated during postnatal development of hypertension. METHODS The mesenteric arteries from 5-, 10-, and 18-week-old Wistar-Kyoto rats (WKY) and SHRs were subjected to vascular contraction. We determined expression levels of Nkcc1 mRNA and protein, methylation status, and histone modification of Nkcc1 promoter, and DNA methyltransferase (DNMT) activity. RESULTS The inhibition of dose-response curves by bumetanide, an inhibitor of NKCC1, as well as the expression of Nkcc1 mRNA and protein was comparable between 5-week-old SHR and age-matched WKY, but greater in 18-week-old SHR than in age-matched WKY. Nkcc1 promoter in WKY was getting methylated with age whereas that in SHR mostly remained hypomethylated after development of hypertension. DNMT3B was highly associated with the promoter of WKY, whereas the CXXC finger protein 1 (Cfp1) was highly bound to the promoter of SHR. At the age of 18 weeks, the DNMT activity in aorta of WKY was about threefold higher than that of SHR. The transcription-activating histone code acetyl H3 was higher in SHR than in WKY, whereas suppressive histone code dimethyl H3K9 was greater in WKY than in SHR. CONCLUSION It is concluded that expression of NKCC1 is epigenetically upregulated during postnatal development of hypertension. Our data indicate that maintenance of hypomethylation in Nkcc1 promoter of SHR resulting from low DNMT activity plays an important role in the upregulation of NKCC1 during development of spontaneous hypertension.
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Kim YJ, Cho HM, Yoon CS, Lee CK, Lee TY, Seok JP. Surgical treatment of thoracic menigocele associated with neurofibromatosis and kyphoscoliosis. Korean J Thorac Cardiovasc Surg 2011; 44:383-6. [PMID: 22263195 PMCID: PMC3249347 DOI: 10.5090/kjtcs.2011.44.5.383] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 07/04/2011] [Accepted: 08/16/2011] [Indexed: 11/16/2022]
Abstract
A 46-year-old man presented with a lateral thoracic meningocele associated with cutaneous neurofibromatosis type I and kyphoscoliosis of the thoracic spine upon medical examination. In the majority of such cases, these meningoceles remain asymptomatic, but surgery is indicated when giant or symptomatic cysts are present. The large thoracic meningocele was successfully extirpated through the transthoracic approach in combination with lumbar puncture and cerebrospinal drainage for decompression of the cyst.
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Affiliation(s)
- Young-Jin Kim
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital, Korea
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Kong CG, In Y, Cho HM, Suhl KH. The effects of applying adhesion prevention gel on the range of motion and pain after TKA. Knee 2011; 18:104-7. [PMID: 20060726 DOI: 10.1016/j.knee.2009.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 12/02/2009] [Accepted: 12/17/2009] [Indexed: 02/02/2023]
Abstract
A mixed solution of sodium hyaluronate and sodium carboxymethylcellulose (HA/CMC) has been shown to be effective for decreasing postoperative adhesions in various kinds of surgeries. We evaluated the clinical efficacy and safety of HA/CMC gel on the early postoperative range of motion and pain relief after total knee arthroplasty (TKA). Thirty one patients who underwent bilateral TKA as a single-stage procedure for primary osteoarthritis were included in the study. At the completion of surgery, among both knees, the HA/CMC gel was applied to one knee (the HA/CMC group) and HA/CMC gel was not applied to the other knee (the control group). The primary outcome measure was the early assessment of range of motion and the secondary outcome measures were the VAS pain scores and the number of complications in each group. Periarticular application of HA/CMC gel was safe without causing any wound problems or infection. However, local application of HA/CMC gel neither increased the range of motion nor reduced the pain during the early postoperative period of TKA.
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Affiliation(s)
- Chae-Gwan Kong
- Department of Orthopedic Surgery, Uijongbu St. Mary's Hospital, The Catholic University of Korea, 65-1 Kumoh-Dong, Uijongbu-Si, Kyonggi-Do, 480-130, Republic of Korea
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28
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Cho HM, Kim YJ, Lee T, Lee CK, Seok J, Lee YH. Surgical Treatment of Dermatofibrosarcoma Protuberans of the Chest Wall. Korean J Thorac Cardiovasc Surg 2010. [DOI: 10.5090/kjtcs.2010.43.6.790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Hyun-Min Cho
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital
| | - Young-Jin Kim
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital
| | - Taeyeon Lee
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital
| | - Chan-Kyu Lee
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital
| | - Junepill Seok
- Department of Thoracic and Cardiovascular Surgery, Konyang University Hospital
| | - Yong Hae Lee
- Department of Plastic Surgery, Konyang University Hospital
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29
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Chung YG, Jee WH, Kang YK, Jung CK, Park GS, Lee AH, Bahk WJ, Cho HM, Park JW. Kimura's disease involving a long bone. Skeletal Radiol 2010; 39:495-500. [PMID: 20107782 DOI: 10.1007/s00256-009-0863-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 12/10/2009] [Accepted: 12/14/2009] [Indexed: 02/02/2023]
Abstract
Kimura's disease is a rare, benign lymphoproliferative disorder of unknown etiology. It occurs most often in Asian men, usually in the second or third decade of life. Most lesions occur in the head and neck followed by the axilla, groin, popliteal region, and arm. The lesions are commonly found in soft tissues. To the best of our knowledge, there has been only one case report of bone involvement in Kimura's disease presented on plain radiography. We report a case of Kimura's disease that involved the proximal meta-diaphysis of the humerus and adjacent soft tissue shown on radiography and MR imaging.
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Affiliation(s)
- Yang-Guk Chung
- Department of Orthopedic Surgery, The Catholic University of Korea, Seoul, Korea
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30
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Kim JM, Kim YS, Ha KY, Cho HM. Arthroscopic stabilization for traumatic anterior dislocation of the shoulder: suture anchor fixation versus transglenoid technique. J Orthop Sci 2008; 13:318-23. [PMID: 18696189 DOI: 10.1007/s00776-008-1239-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Accepted: 03/31/2008] [Indexed: 11/28/2022]
Abstract
BACKGROUND The purpose of this study was to evaluate and compare the clinical results of arthroscopic capsulolabral reconstruction using arthroscopic transglenoid fixation and a suture anchor fixation for anterior dislocation of the shoulder. METHODS From December 1999 to September 2006, 46 patients who underwent arthroscopic capsulolabral reconstruction for their anterior dislocation of the shoulder were enrolled, and their surgical outcomes were retrospectively evaluated. In group A (26 patients), the procedure was performed with Caspari's transglenoid technique. In group B (20 patients), the capsulolabral reconstruction was done using the suture anchor method. The postoperative assessment including American Shoulder and Elbow Surgeons' (ASES) scores, recurrent instability, the level of return to previous sports activity, and satisfaction with the treatment were compared between the two groups. Statistical analysis was performed using Student's t-test, chi-squared analysis, and a Pearson correlation coefficient. RESULTS There were significant differences in ASES scores (group A 76.8 vs. group B 85.5), satisfaction with the surgery (group A 6.5 vs. group B 8.2 - out of 10) and in the level of return to previous sports activity (group A 7.2 vs. group B 8.3 - out of 10) at last follow-up. Recurrent instability occurred in 7 patients in group A (26.9%) and in two cases in group B (10.0%). CONCLUSIONS The arthroscopic capsulolabral reconstruction using a suture anchor was a more reliable treatment option (in regard to satisfaction, functional recovery, and recurrent instability) than the transglenoid fixation technique for anterior dislocation of the shoulder.
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Affiliation(s)
- Jung-Man Kim
- Department of Orthopaedic Surgery, Kangnam St. Mary's Hospital, Catholic University of Korea, 505 Banpo-dong, Seocho-gu, Seoul, 137-701, Korea
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31
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Lee YS, Lee IK, Kang WK, Cho HM, Park JK, Oh ST, Kim JG, Kim YH. Surgical and pathological outcomes of laparoscopic surgery for transverse colon cancer. Int J Colorectal Dis 2008; 23:669-73. [PMID: 18379794 PMCID: PMC2386750 DOI: 10.1007/s00384-008-0471-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/04/2008] [Indexed: 02/04/2023]
Abstract
PURPOSE Several multi-institutional prospective randomized trials have demonstrated short-term benefits using laparoscopy. Now the laparoscopic approach is accepted as an alternative to open surgery for colon cancer. However, in prior trials, the transverse colon was excluded. Therefore, it has not been determined whether laparoscopy can be used in the setting of transverse colon cancer. This study evaluated the peri-operative clinical outcomes and oncological quality by pathologic outcomes of laparoscopic surgery for transverse colon cancer. MATERIALS AND METHODS Analysis of the medical records of patients who underwent laparoscopic colorectal resection from August 2004 to November 2007 was made. Computed tomography, barium enema, and colonoscopy were performed to localize the tumor preoperatively. Extended right hemicolectomy, transverse colectomy, and extended left hemicolectomy were performed for transverse colon cancer. Surgical outcomes and pathologic outcomes were compared between transverse colon cancer (TCC) and other site colon cancer (OSCC). RESULTS Of the 312 colorectal cancer patients, 94 patients underwent laparoscopic surgery for OSCC, and 34 patients underwent laparoscopic surgery for TCC. Patients with TCC were similar to patients with OSCC in age, gender, body mass index, operating time, blood loss, time to pass flatus, start of diet, hospital stay, tumor size, distal resection margin, proximal resection margin, number of lymph nodes, and radial margin. One case in TCC and three cases in OSCC were converted to open surgery. CONCLUSIONS Laparoscopic surgery for transverse colon cancer and OSCC had similar peri-operative clinical and acceptable pathological outcomes.
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Affiliation(s)
- Y S Lee
- Department of Surgery, The Catholic University of Korea, Seoul, South Korea.
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32
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Kwon MH, Kang MI, Jeong JH, Won HK, Park HW, Park JH, Kim ST, Kwon SJ, Choi E, Na MJ, Cho HM, Kim YJ, Kim YM, Cho YJ, Son JW. Synchronous Roentgenographically Occult Lung Carcinoma Treated with Argon Plasma Coagulation in a Patient with Resectable Primary Lung Cancer. Tuberc Respir Dis (Seoul) 2008. [DOI: 10.4046/trd.2008.65.2.137] [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: 11/24/2022] Open
Affiliation(s)
- Mi-Hye Kwon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Mi-Il Kang
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Ji-Hyun Jeong
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hee-Kwan Won
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hyun-Woong Park
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Jung-Ho Park
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sung-Tae Kim
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sun-Jung Kwon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Eugene Choi
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Moon-Jun Na
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hyun-Min Cho
- Department of Chest Surgery, Konyang University College of Medicine, Daejon, Korea
| | - Young-Jin Kim
- Department of Chest Surgery, Konyang University College of Medicine, Daejon, Korea
| | - Yoon-Mee Kim
- Department of Pathology, Konyang University College of Medicine, Daejon, Korea
| | - Young-Jun Cho
- Department of Diagnostic Radiology, Konyang University College of Medicine, Daejon, Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
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33
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Affiliation(s)
- M E Lee
- Department of Chemistry, Graduate School, Yonsei University, Seoul 120-749, Korea.
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34
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Kim J, Oh SN, Cho HM, Park MK, Kim KR, Elkins JW. Background monitoring and long-range transport of atmospheric CFC-11 and CFC-12 at Kosan, Korea. Environ Monit Assess 2001; 70:47-56. [PMID: 11516020 DOI: 10.1023/a:1010640004389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The background concentrations of atmospheric CFC-11 and CFC-12 were monitored to assess their impact on stratospheric ozone depletion and global warming from September 1995 to March 1999 at Kosan, Korea, located at eastern margin of the Asian Continent. The concentrations of atmospheric CFC-11 at Kosan have decreased slightly, at a rate of -2.5 pptv yr(-1), over the period in response to the Montreal Protocol. The CFC-12 mixing ratio at Kosan continues to increase in the atmosphere at a rate of 5.7 pptv yr(-1) despite international regulations, because of its extreme atmosphere persistence. Recent trends of these two chlorofluorocarbons at Kosan, Korea were concordant with those of the northern hemispheric background monitored unit at Mauna Loa, Hawaii. The maximum seasonal mean mixing ratios of CFC-11 and CFC-12 at Kosan, Korea, were 270 +/- 4 pptv in the spring and 538 +/- 9 pptv in the winter, and the corresponding seasonal minima were 267 +/- 7 and 529 +/- 12 pptv. This occurred in the summer and was due to southeasterly winds from the northwestern Pacific Ocean. By performing a three-day isentropic backward trajectory analysis, it was shown that air masses at Kosan, and with the exception of summer, mainly originated from central and northern China. In particular, the mixing ratios of these two contaminant species are closely related with their air mass trajectories.
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Affiliation(s)
- J Kim
- Applied Meteorology Research Laboratory, Meterological Research Institute, Seoul, Korea.
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Chun EM, Park YJ, Kang HS, Cho HM, Jun DY, Kim YH. Expression of the apolipoprotein C-II gene during myelomonocytic differentiation of human leukemic cells. J Leukoc Biol 2001; 69:645-50. [PMID: 11310852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Apolipoprotein C-II (apoC-II), which is known to activate lipoprotein lipase (LPL), was identified by ordered differential display (ODD)-polymerase chain reaction (PCR) as a cDNA fragment exhibiting a distinct increase in expression during 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced differentiation of promonocytic U937 cells into monocytes and macrophages. The amount of apoC-II mRNA expression detectable in U937 cells significantly increased and reached a maximum 24-48 h after treatment with 32 nM TPA. apoC-II mRNA was also detected in monocytic THP-1 cells but was not detected in promyelocytic HL-60 cells. In healthy human tissues, the most significant expression of apoC-II mRNA was in the liver. Although apoC-II mRNA expression was markedly up-regulated during the induced differentiation of HL-60 cells into monocytes and macrophages with 32 nM TPA, such expression was not induced during the differentiation of HL-60 cells into granulocytes with 1.25% dimethyl sulfoxide. These results suggest that human apoC-II expression is induced at the transcription level during myelomonocytic differentiation and may confer an important role to macrophages involved in normal lipid metabolism and atherosclerosis.
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Affiliation(s)
- E M Chun
- Department of Microbiology, College of Natural Sciences, Kyungpook National University, Taegu, Korea
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36
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Abstract
The nucleotide sequence of Hs 3-PGDH gene, encoding human 3-phosphoglycerate dehydrogenase that catalyzes the initiating step in the phosphorylated pathway of serine biosynthesis, has been determined. The 3-PGDH gene has a predicted 533 amino acid open reading frame, encoding a 56.8kDa protein that shares 94.0% similarity with rat-liver 3-PGDH. Two different transcripts corresponding to 3-PGDH mRNA were detected in human normal tissues. A dominant 2.1kb transcript was expressed at high levels in prostate, testis, ovary, brain, liver, kidney, and pancreas, and weakly expressed in thymus, colon, and heart. A 710bp transcript also appeared as a weaker band where the 2.1kb mRNA was expressed, and it was more significant than the 2.1kb mRNA in heart and skeletal muscle. The TPA-induced monocytic differentiation of U937, which also resulted in growth arrest, abruptly downregulated the expression of 3-PGDH. Removal of TPA restored cell growth through the retrodifferentiation process and subsequent expression of 3-PGDH. The 3-PGDH mRNA was markedly expressed in human leukemias, lymphoma Sup-T1, colon adenocarcinoma COLO 320DM, epitheloid carcinoma HeLa S3, and murine lymphoma BW5147.G.1.4, but not in human leukemia K562. This report demonstrates that the human 3-PGDH gene is regulated at the transcriptional level depending on tissue specificty and cellular proliferative status, and its transcriptional regulation mechanism may be a useful target for diagnosis and therapy of cancer.
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MESH Headings
- 3T3 Cells
- Amino Acid Sequence
- Animals
- Base Sequence
- Blotting, Northern
- Carbohydrate Dehydrogenases/genetics
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- DNA, Complementary/isolation & purification
- Female
- Gene Expression Regulation, Enzymologic
- HL-60 Cells
- HeLa Cells
- Humans
- Jurkat Cells
- K562 Cells
- Male
- Mice
- Molecular Sequence Data
- Phosphoglycerate Dehydrogenase
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Tissue Distribution
- Tumor Cells, Cultured
- U937 Cells
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Affiliation(s)
- H M Cho
- Department of Microbiology, College of Natural Sciences, Kyungpook National University, Taegu, South Korea
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37
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Lee YW, Cho HM, Shin DJ, Lee IW. Noncollimated bidirectional shearing interferometer for measuring a long radius of curvature. Appl Opt 1997; 36:5317-5320. [PMID: 18259348 DOI: 10.1364/ao.36.005317] [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: 05/25/2023]
Abstract
A method for measuring a long radius of curvature with a modified half-aperture bidirectional shearing interferometer is described. A plane mirror of the interferometer is replaced with a test mirror, and the incident beam is decollimated by shifting of the source to equalize the widths of the bidirectional shearing fringes reflected from the plane and test mirrors. This method can be applied to concave and convex surfaces.
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Affiliation(s)
- Y W Lee
- Quantum Metrology Division, Korea Research Institute of Standards and Science, P. O. Box 102, Yusong, Taejon, 305-600, South Korea
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38
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Abstract
Griseofulvin(GF) has become the drug of choice as an antifungal agent for patients who suffer from many kinds of fungal infection. In order to clarify hepatic injury by griseofulvin(GF) overload and the effect of UDCA on GF-induced hepatic injury, the authors carried out biochemical, histologic, and ultrastructural studies of liver following treatment with griseofulvin and ursodeoxycholic acid(UDCA) in mice. Urine porphobilinogen excretion in the group treated with GF alone was significantly increased and reached the highest level in the 4th week and declined thereafter. Biochemical studies of the liver function showed no remarkable changes of serum bilirubin levels throughout the experimental period in all groups, except for SGPT and alkaline phosphatase activities which were significantly elevated and reached the highest level in the second week. Then they slightly decreased in GF treated groups(GF alone and GF plus UDCA) in comparison with the control group. Pathologic findings in the group treated with GF alone include focal liver cell necrosis(esp, zone 3), Mallory bodies in hepatocytes(esp, zone 1), Kupffer cell activation, and brown protoporphyrin pigments in the hepatocytes, bile canaliculi and interlobular bile ducts with a marked inflammatory cell infiltration in the portal tracts. Under the polarizing light microscope, bile ductular and canalicular thrombi showed a "Maltese cross" birefringence in mice treated with GF alone. There is no definite finding of fatty change in hepatocyte. Under the microscope, the liver appeared normal with an intact lobular architecture in the GF plus UDCA treated group. Electron microscopically, GF-induced changes include swelling of mitochondria, globular protoporphyrin crystals in the hepatocyte cytoplasm, markedly dilated bile cannaliculi and bile ducts and the formation of a Mallory hyaline bodies in the hepatocytes. There were no noticeable structural changes in the GF plus UDCA-treated group. Therefore the results suggest that GF causes hepatic injury, namely porphyria and cholestasis, and the treatment of UDCA may have cytoprotective and choleretic effects on GF-induced hepatic injuries.
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Affiliation(s)
- S W Choi
- Department of Internal Medicine & Clinical Pathology, Catholic University Medical College, Seoul, Korea
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Park YM, Lee CD, Yoon KH, Han NI, Cho HM, Yook KS, Jeong JW, Kim BS, Jee MK, Kim BK. A case of subcutaneous seeding of hepatocellular carcinoma after fine needle aspiration biopsy. Korean J Intern Med 1989; 4:96-100. [PMID: 2562134 PMCID: PMC4534970 DOI: 10.3904/kjim.1989.4.1.96] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Cancer spread along the needle track following fine needle aspiration biopsy is said to be a rare complication. The authors report a case of subcutaneous implantation of hepatocellular carcinoma following ultrasono-guided fine needle aspiration biopsy. The patient, a 67-year-old Korean male was found to have a large hepatocellular carcinoma diagnosed by fine needle aspiration biopsy. Four months later, the patient felt two subcutaneous growing lumps at the previous aspiration site. The authors confirmed them histologically 11 months after aspiration.
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Hong KH, Lee IW, Cho HM, Lee YW. Enhancement of accuracy in OTF measurement. Appl Opt 1987; 26:4423-4424. [PMID: 20523377 DOI: 10.1364/ao.26.004423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A knife-edge scanning method was developed to enhance the accuracy in OTF measurement. A slit image formed by the lens under test was scanned by a knife-edge which was moved by a stepping motor. It was possible to increase the signal-to-noise ratio with averaging 4-32 data at each point through a scan. The standard deviation was decreased to under 0.25% in the MTF unit.
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Abstract
Reaction centers isolated from the photosynthetic bacterium Rhodopseudomonas sphaeroides R-26 mutant were irradiated with laser pulses of variable energy and the amount of photooxidation of the primary electron donor bacteriochlorophyll was measured. The resultant light saturation curve fits an exponential function and not a hyperbolic or hyperbolic tangent function. Analysis using either a Poisson statistical model or a simple kinetic model predicts an exponential light saturation curve in the limit where the light pulse is long relative to any transient intermediate states. The absolute quantum yield of photochemistry was found to be 0.98, utilizing the entire light saturation curve. Distortions from the simple exponential light saturation behavior are predicted when very short laser pulses are used.
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