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Park HJ, Kim M, Lee D, Kim HJ, Jung HW. CRISPR-Cas9 and beyond: identifying target genes for developing disease-resistant plants. Plant Biol (Stuttg) 2024; 26:369-377. [PMID: 38363032 DOI: 10.1111/plb.13625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
Throughout the history of crop domestication, desirable traits have been selected in agricultural products. However, such selection often leads to crops and vegetables with weaker vitality and viability than their wild ancestors when exposed to adverse environmental conditions. Considering the increasing human population and climate change challenges, it is crucial to enhance crop quality and quantity. Accordingly, the identification and utilization of diverse genetic resources are imperative for developing disease-resistant plants that can withstand unexpected epidemics of plant diseases. In this review, we provide a brief overview of recent progress in genome-editing technologies, including zinc-finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (Cas9) technologies. In particular, we classify disease-resistant mutants of Arabidopsis thaliana and several crop plants based on the roles or functions of the mutated genes in plant immunity and suggest potential target genes for molecular breeding of genome-edited disease-resistant plants. Genome-editing technologies are resilient tools for sustainable development and promising solutions for coping with climate change and population increases.
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Affiliation(s)
- H J Park
- Institute of Agricultural Life Science, Dong-A University, Busan, Korea
- Department of Biological Sciences and Research Center of Ecomimetics, Chonnam National University, Gwangju, Korea
| | - M Kim
- Department of Applied Bioscience, Dong-A University, Busan, Korea
| | - D Lee
- Department of Applied Bioscience, Dong-A University, Busan, Korea
| | - H J Kim
- Department of Molecular Genetics, Dong-A University, Busan, Korea
| | - H W Jung
- Institute of Agricultural Life Science, Dong-A University, Busan, Korea
- Department of Applied Bioscience, Dong-A University, Busan, Korea
- Department of Molecular Genetics, Dong-A University, Busan, Korea
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Keith P, Bohn RIC, Nguyen T, Scott LK, Richmond M, Day M, Choe C, Perkins L, Burnside R, Pyke R, Rikard B, Guffey A, Saini A, Park HJ, Carcillo J. Improved survival in COVID-19 related sepsis and ARDS treated with a unique "triple therapy" including therapeutic plasma exchange: A single center retrospective analysis. J Clin Apher 2024; 39:e22107. [PMID: 38404046 DOI: 10.1002/jca.22107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Throughout the COVID-19 pandemic, the mortality of critically ill patients remained high. Our group developed a treatment regimen targeting sepsis and ARDS which we labeled "triple therapy" consisting of (1) corticosteroids, (2) therapeutic plasma exchange (TPE), and (3) timely intubation with lung protective ventilation. Our propensity analysis assesses the impact of triple therapy on survival in COVID-19 patients with sepsis and ARDS. METHODS Retrospective propensity analysis comparing triple therapy to no triple therapy in adult critically ill COVID-19 patients admitted to the Intensive Care Unit at Lexington Medical Center from 1 March 2020 through 31 October 2021. RESULTS Eight hundred and fifty-one patients were admitted with COVID-19 and 53 clinical and laboratory variables were analyzed. Multivariable analysis revealed that triple therapy was associated with increased survival (OR: 1.91; P = .008). Two propensity score-adjusted models demonstrated an increased likelihood of survival in patients receiving triple therapy. Patients with thrombocytopenia were among those most likely to experience increased survival if they received early triple therapy. Decreased survival was observed with endotracheal intubation ≥7 days from hospital admission (P < .001) and there was a trend toward decreased survival if TPE was initiated ≥6 days from hospital admission (P = .091). CONCLUSION Our analysis shows that early triple therapy, defined as high-dose methylprednisolone, TPE, and timely invasive mechanical ventilation within the first 96 hours of admission, may improve survival in critically ill septic patients with ARDS secondary to COVID-19 infection. Further studies are needed to define specific phenotypes and characteristics that will identify those patients most likely to benefit.
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Affiliation(s)
- Philip Keith
- Lexington Medical Center, West Columbia, South Carolina, USA
| | | | - Trung Nguyen
- Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, USA
| | - L Keith Scott
- Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Monty Richmond
- Medical Center Downtown, MUSC Health Columbia, Columbia, South Carolina, USA
| | - Matthew Day
- Lexington Medical Center, West Columbia, South Carolina, USA
| | - Carol Choe
- Lexington Medical Center, West Columbia, South Carolina, USA
| | - Linda Perkins
- Lexington Medical Center, West Columbia, South Carolina, USA
| | | | - Richard Pyke
- Lexington Medical Center, West Columbia, South Carolina, USA
| | - Ben Rikard
- Lexington Medical Center, West Columbia, South Carolina, USA
| | - Amanda Guffey
- Lexington Medical Center, West Columbia, South Carolina, USA
| | - Arun Saini
- Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, USA
| | - H J Park
- Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Joseph Carcillo
- University of Pittsburgh Medical Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Flerlage T, Fan K, Qin Y, Agulnik A, Arias AV, Cheng C, Elbahlawan L, Ghafoor S, Hurley C, McArthur J, Morrison RR, Zhou Y, Park HJ, Carcillo JA, Hines MR. Mortality Risk Factors in Pediatric Onco-Critical Care Patients and Machine Learning Derived Early Onco-Critical Care Phenotypes in a Retrospective Cohort. Crit Care Explor 2023; 5:e0976. [PMID: 37780176 PMCID: PMC10538916 DOI: 10.1097/cce.0000000000000976] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
OBJECTIVES To use supervised and unsupervised statistical methodology to determine risk factors associated with mortality in critically ill pediatric oncology patients to identify patient phenotypes of interest for future prospective study. DESIGN This retrospective cohort study included nonsurgical pediatric critical care admissions from January 2017 to December 2018. We determined the prevalence of multiple organ failure (MOF), ICU mortality, and associated factors. Consensus k-means clustering analysis was performed using 35 bedside admission variables for early, onco-critical care phenotype development. SETTING Single critical care unit in a subspeciality pediatric hospital. INTERVENTION None. PATIENTS There were 364 critical care admissions in 324 patients with underlying malignancy, hematopoietic cell transplant, or immunodeficiency reviewed. MEASUREMENTS Prevalence of multiple organ failure, ICU mortality, determination of early onco-critical care phenotypes. MAIN RESULTS ICU mortality was 5.2% and was increased in those with MOF (18.4% MOF, 1.7% single organ failure [SOF], 0.6% no organ failure; p ≤ 0.0001). Prevalence of MOF was 23.9%. Significantly increased ICU mortality risk was associated with day 1 MOF (hazards ratio [HR] 2.27; 95% CI, 1.10-6.82; p = 0.03), MOF during ICU admission (HR 4.16; 95% CI, 1.09-15.86; p = 0.037), and with invasive mechanical ventilation requirement (IMV; HR 5.12; 95% CI, 1.31-19.94; p = 0.018). Four phenotypes were derived (PedOnc1-4). PedOnc1 and 2 represented patient groups with low mortality and SOF. PedOnc3 was enriched in patients with sepsis and MOF with mortality associated with liver and renal dysfunction. PedOnc4 had the highest frequency of ICU mortality and MOF characterized by acute respiratory failure requiring invasive mechanical ventilation at admission with neurologic dysfunction and/or severe sepsis. Notably, most of the mortality in PedOnc4 was early (i.e., within 72 hr of ICU admission). CONCLUSIONS Mortality was lower than previously reported in critically ill pediatric oncology patients and was associated with MOF and IMV. These findings were further validated and expanded by the four derived nonsynonymous computable phenotypes. Of particular interest for future prospective validation and correlative biological study was the PedOnc4 phenotype, which was composed of patients with hypoxic respiratory failure requiring IMV with sepsis and/or neurologic dysfunction at ICU admission.
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Affiliation(s)
- Tim Flerlage
- Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN
| | - Kimberly Fan
- Division of Critical Care, Department of Pediatrics, MD Anderson Cancer Center, Houston, TX
| | - Yidi Qin
- Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Asya Agulnik
- Department of Global Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Anita V Arias
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Cheng Cheng
- Division of Critical Care, Department Biostatistics, St Jude Children's Research Hospital, Memphis, TN
| | - Lama Elbahlawan
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Saad Ghafoor
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Caitlin Hurley
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Jennifer McArthur
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - R Ray Morrison
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Yinmei Zhou
- Department of Biostatistics, St Jude Children's Research Hospital, Memphis, TN
| | - H J Park
- Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Joseph A Carcillo
- Division of Pediatric Critical Care, Department of Critical Care Medicine, Children's Hospital of Pittsburgh, Pittsburgh, PA
| | - Melissa R Hines
- Division of Critical Care, Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
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Park HJ, Kim K, Kim YB, Chang JS, Shin KH. Patterns and Longitudinal Changes in The Practice of Breast Cancer Radiotherapy in Korea: Korean Radiation Oncology Group 22-01. Int J Radiat Oncol Biol Phys 2023; 117:e197-e198. [PMID: 37784841 DOI: 10.1016/j.ijrobp.2023.06.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To analyze contemporary practice patterns in breast cancer radiotherapy (RT) and to assess longitudinal changes therein over 5 years in Korea. MATERIALS/METHODS A nationwide survey was conducted among board-certified radiation oncologists in Korea by the Division for Breast Cancer of the Korean Radiation Oncology Group in March 2022. The survey consisted of 44 questions related to six domains: hypofractionated (HypoFx) whole breast RT, accelerated partial breast RT (APBI), regional nodal irradiation (RNI), RT for ductal carcinoma in situ (DCIS), postmastectomy RT (PMRT), and tumor bed boost. RESULTS In total, 70 radiation oncologists from 61 of 101 (60%) institutions participated in the survey. HypoFx RT was used by 62 respondents (89%), which has significantly increased from 36% in 2017. The HypoFx RT was commonly administered at 40-42.5 Gy in 15-16 fractions. APBI was used by 12 respondents (17%), which has increased from 5% in 2017. The use of RNI did not change significantly: ≥ pN2 (6%), ≥ pN1 (33%), and ≥ pN1 with pathological risk factors (61%). However, the indications for use of internal mammary lymph node (IMN) irradiation have expanded. In particular, the rates of routine treatment of IMN (11% from 6% in 2017) and treatment in cases of ≥ pN2 (27% from 14% in 2017) have doubled; however, the rate of treatment for only IMN involvement, identified on imaging, has decreased to 31% from 47% in 2017. With regard to DCIS, the use of hypoFx RT increased to 75% from 25%, and the rate of omission on of RT after breast-conserving surgery decreased to 38% from 48% in 2017. The use of hypoFx RT for PMRT also increased to 36% from 8% in 2017. CONCLUSION The adoption of HypoFx RT after breast-conserving surgery in invasive breast cancer and DCIS has increased significantly, whereas that for PMRT has increased moderately, compared to 2017. Further studies are required to determine the optimal use of RNI.
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Affiliation(s)
- H J Park
- Hanyang University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K Kim
- Department of Radiation Oncology, Ewha Womans University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - Y B Kim
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J S Chang
- Department of Radiation Oncology, Gangnam Severance Hospital, Seoul, Korea, Republic of (South) Korea
| | - K H Shin
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Fan Z, Kernan KF, Qin Y, Canna S, Berg RA, Wessel D, Pollack MM, Meert K, Hall M, Newth C, Lin JC, Doctor A, Shanley T, Cornell T, Harrison RE, Zuppa AF, Sward K, Dean JM, Park HJ, Carcillo JA. Hyperferritinemic sepsis, macrophage activation syndrome, and mortality in a pediatric research network: a causal inference analysis. Crit Care 2023; 27:347. [PMID: 37674218 PMCID: PMC10481565 DOI: 10.1186/s13054-023-04628-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/27/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND One of five global deaths are attributable to sepsis. Hyperferritinemic sepsis (> 500 ng/mL) is associated with increased mortality in single-center studies. Our pediatric research network's objective was to obtain rationale for designing anti-inflammatory clinical trials targeting hyperferritinemic sepsis. METHODS We assessed differences in 32 cytokines, immune depression (low whole blood ex vivo TNF response to endotoxin) and thrombotic microangiopathy (low ADAMTS13 activity) biomarkers, seven viral DNAemias, and macrophage activation syndrome (MAS) defined by combined hepatobiliary dysfunction and disseminated intravascular coagulation, and mortality in 117 children with hyperferritinemic sepsis (ferritin level > 500 ng/mL) compared to 280 children with sepsis without hyperferritinemia. Causal inference analysis of these 41 variables, MAS, and mortality was performed. RESULTS Mortality was increased in children with hyperferritinemic sepsis (27/117, 23% vs 16/280, 5.7%; Odds Ratio = 4.85, 95% CI [2.55-9.60]; z = 4.728; P-value < 0.0001). Hyperferritinemic sepsis had higher C-reactive protein, sCD163, IL-22, IL-18, IL-18 binding protein, MIG/CXCL9, IL-1β, IL-6, IL-8, IL-10, IL-17a, IFN-γ, IP10/CXCL10, MCP-1/CCL2, MIP-1α, MIP-1β, TNF, MCP-3, IL-2RA (sCD25), IL-16, M-CSF, and SCF levels; lower ADAMTS13 activity, sFasL, whole blood ex vivo TNF response to endotoxin, and TRAIL levels; more Adenovirus, BK virus, and multiple virus DNAemias; and more MAS (P-value < 0.05). Among these variables, only MCP-1/CCL2 (the monocyte chemoattractant protein), MAS, and ferritin levels were directly causally associated with mortality. MCP-1/CCL2 and hyperferritinemia showed direct causal association with depressed ex vivo whole blood TNF response to endotoxin. MCP-1/CCL2 was a mediator of MAS. MCP-1/CCL2 and MAS were mediators of hyperferritinemia. CONCLUSIONS These findings establish hyperferritinemic sepsis as a high-risk condition characterized by increased cytokinemia, viral DNAemia, thrombotic microangiopathy, immune depression, macrophage activation syndrome, and death. The causal analysis provides rationale for designing anti-inflammatory trials that reduce macrophage activation to improve survival and enhance infection clearance in pediatric hyperferritinemic sepsis.
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Affiliation(s)
- Zhenziang Fan
- Department of Computer Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kate F Kernan
- Division of Pediatric Critical Care Medicine, Department of Critical Care Medicine, Faculty Pavilion, Children's Hospital of Pittsburgh, Center for Critical Care Nephrology and Clinical Research Investigation and Systems Modeling of Acute Illness Center, University of Pittsburgh, Suite 2000, 4400 Penn Avenue, Pittsburgh, PA, 15421, USA
| | - Yidi Qin
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Scott Canna
- Department of Pediatrics, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Robert A Berg
- Department of Anesthesiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - David Wessel
- Division of Critical Care Medicine, Department of Pediatrics, Children's National Hospital, Washington, DC, USA
| | - Murray M Pollack
- Division of Critical Care Medicine, Department of Pediatrics, Children's National Hospital, Washington, DC, USA
| | - Kathleen Meert
- Division of Critical Care Medicine, Department of Pediatrics, Children's Hospital of Michigan, Detroit, MI, USA
- Central Michigan University, Mt Pleasant, MI, USA
| | - Mark Hall
- Division of Critical Care Medicine, Department of Pediatrics, The Research Institute at Nationwide Children's Hospital Immune Surveillance Laboratory, and Nationwide Children's Hospital, Columbus, OH, USA
| | - Christopher Newth
- Division of Pediatric Critical Care Medicine, Department of Anesthesiology and Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - John C Lin
- Division of Critical Care Medicine, Department of Pediatrics, St. Louis Children's Hospital, St. Louis, MO, USA
| | - Allan Doctor
- Division of Critical Care Medicine, Department of Pediatrics, St. Louis Children's Hospital, St. Louis, MO, USA
| | - Tom Shanley
- Division of Critical Care Medicine, Department of Pediatrics, C. S. Mott Children's Hospital, Ann Arbor, MI, USA
| | - Tim Cornell
- Division of Critical Care Medicine, Department of Pediatrics, C. S. Mott Children's Hospital, Ann Arbor, MI, USA
| | - Rick E Harrison
- Division of Critical Care Medicine, Department of Pediatrics, Mattel Children's Hospital at University of California Los Angeles, Los Angeles, CA, USA
| | - Athena F Zuppa
- Department of Anesthesiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Katherine Sward
- Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - J Michael Dean
- Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - H J Park
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Joseph A Carcillo
- Division of Pediatric Critical Care Medicine, Department of Critical Care Medicine, Faculty Pavilion, Children's Hospital of Pittsburgh, Center for Critical Care Nephrology and Clinical Research Investigation and Systems Modeling of Acute Illness Center, University of Pittsburgh, Suite 2000, 4400 Penn Avenue, Pittsburgh, PA, 15421, USA.
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Park MJ, Lee SE, Yoon W, Park HJ, Kim SH, Oh SH, Lee DG, Pyeon DB, Kim EY, Park SP. Effect of supplementation of cryoprotectant solution with hydroxypropyl cellulose for vitrification of bovine oocytes. Cryo Letters 2023; 44:37-46. [PMID: 36629840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Successful cryopreservation of bovine oocytes is very important for research and commercial applications. However, the survival and development rate of vitrified-thawed (VT) oocytes are lower than those of non-vitrified-thawed (non-VT) oocytes. OBJECTIVE To investigate the effect of adding hydroxypropyl cellulose (HPC) to the vitrification solution for bovine oocytes. MATERIALS AND METHODS For vitrification, bovine metaphase II oocytes were pretreated with a solution containing 10% ethylene glycol supplemented with 0, 10, 50, or 100 ug/mL HPC for 5 min, exposed to a solution containing 30% ethylene glycol supplemented with 0, 10, 50, or 100 ug/mL HPC for 30 s, and then directly plunged into liquid nitrogen. RESULTS The survival rate of oocytes was significantly higher in the 50 HPC group than in the 0, 10, and 100 HPC groups. The reactive oxygen species level was lower in the non-VT and 50 HPC groups than in the other groups. The mRNA levels of proapoptotic genes (Bax) were lower in the non-VT, 0, and 50 HPC groups than in the other groups. The mRNA levels of antiapoptotic genes (BCl2) were higher in the non-VT than in the other groups. The development rates of embryos (day 8) obtained via parthenogenetic activation (PA) were determined in the non-VT, 0 HPC, and 50 HPC groups. The cleavage rate was significantly higher in the non-VT group. CONCLUSION Supplementation of vitrification solution with HPC improves the survival of VT bovine oocytes and the development capacity of embryos derived from these oocytes via PA. doi.org/10.54680/fr23110110212.
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Affiliation(s)
- M J Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S E Lee
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - W Yoon
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - H J Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S H Kim
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S H Oh
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - D G Lee
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - D B Pyeon
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - E Y Kim
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243; Mirae Cell Bio Inc., Seoul 04795, Korea
| | - S P Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243; Mirae Cell Bio Inc., Seoul 04795, Korea.
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Lee SE, Choi YS, Park HJ, Do JH. Gastrointestinal: Ampullary tumor growing into ventral pancreatic duct in incomplete pancreas divisum. J Gastroenterol Hepatol 2022. [PMID: 36524451 DOI: 10.1111/jgh.16080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/04/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Affiliation(s)
- S E Lee
- Department of Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Y-S Choi
- Department of Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - H J Park
- Department of Radiology, Chung-Ang University College of Medicine, Seoul, Korea
| | - J H Do
- Division of Gastroenterology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
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Han SY, Jang TW, Park HJ, Oh SS, Lee JB, Myoung SM, Park JH. Nypa fruticans Wurmb inhibits melanogenesis in isobutylmethylxanthine‑treated melanoma via the PI3K/AKT/mTOR/CREB and MAPK signaling pathways. Exp Ther Med 2022; 24:754. [PMID: 36545047 PMCID: PMC9751520 DOI: 10.3892/etm.2022.11691] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/20/2022] [Indexed: 11/10/2022] Open
Abstract
Malignant melanoma is responsible for 3.0 and 1.7% of cases of tumor incidence and tumor-associated mortality, respectively, in the Caucasian population. Melanoma is a type of skin cancer that occurs when melanocytes mutate and divide uncontrollably. Nypa fruticans Wurmb (NF) is abundant in phytochemicals (polyphenols and flavonoids) and is traditionally used to treat diseases of the respiratory tract. The present study investigated the inhibitory effect of the ethyl acetate fraction of NF (ENF) on melanogenesis-related factors in isobutylmethylxanthine-treated B16F10 melanoma cells. Phenolics and flavonoids (caffeic acid, catechin, epicatechin and hirsutine) in ENF were analyzed via liquid chromatography-mass spectrometry. In addition, the main factors involved in melanogenesis were identified using immunoblotting, reverse transcription-polymerase chain reaction (RT-PCR), RT-quantitative PCR and immunofluorescence. ENF significantly suppressed the expression of tyrosinase (TYR) and TYR-related proteins 1 and 2 (TYRP-1/2), which are the main factors involved in melanogenesis. ENF also inhibited the expression of microphthalmia-associated transcription factor (MITF) by phosphorylating the related cell signaling proteins (protein kinase B, mammalian target of rapamycin, phosphoinositide 3-kinase and cAMP response element-binding protein). Furthermore, ENF inhibited the phosphorylation of extracellular signal-regulated kinase and thereby downregulated melanogenesis. In conclusion, ENF inhibited melanogenesis by suppressing MITF, which controls TYRP-1/2 and TYR. These results suggested that ENF may be a natural resource that can inhibit excessive melanin expression by regulating various melanogenesis pathways.
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Affiliation(s)
- So-Yeon Han
- Department of Medicinal Plant Science, Jungwon University, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea
| | - Tae-Won Jang
- Department of Pharmaceutical Science, Jungwon University, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea
| | - Hye-Jeong Park
- Department of Medicinal Plant Science, Jungwon University, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea
| | - Sung-Soo Oh
- Research Center, Kiposs Co., Ltd., Seoul 08584, Republic of Korea
| | - Jung-Bok Lee
- Research and Innovation Center, Kyochon Food and Beverage Co., Ltd., Hwaseong-si, Gyeonggi‑do 18469, Republic of Korea
| | - Sung-Min Myoung
- Department of Public Health Administration, Jungwon University, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea
| | - Jae-Ho Park
- Department of Pharmaceutical Science, Jungwon University, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea,Correspondence to: Professor Jae-Ho Park, Department of Pharmaceutical Science, Jungwon University, 85 Munmu-ro, Goesan-gun, Chungcheongbuk-do 28024, Republic of Korea
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Park HJ, An WS, Rha SH, Kim SE, Lee SM. Minimal change glomerulonephritis following the second dose of the Moderna COVID-19 vaccine. QJM 2022; 115:490-491. [PMID: 35380707 PMCID: PMC9383619 DOI: 10.1093/qjmed/hcac094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 03/30/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | - S H Rha
- Department of Pathology, College of Medicine, Dong-A University, 26, Daesingongwon-ro, Dongdaesin-dong 3-ga, Seo-gu, Busan 49201, Republic of Korea
| | | | - S M Lee
- Address correspondence to Dr Su Mi Lee, Department of Internal Medicine, College of Medicine, Dong-A University, 26 Daesingongwon-ro, Seo-gu, Busan 49201, Republic of Korea.
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Park MJ, Lee SE, Yoon W, Park HJ, Kim SH, Oh SH, Lee DG, Pyeon DB, Kim EY, Park SP. Effect of supplementation of cryoprotectant solution with hydroxypropyl cellulose for vitrification of bovine oocytes. Cryo Letters 2022; 44:37-46. [PMID: 36625874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Successful cryopreservation of bovine oocytes is very important for research and commercial applications. However, the survival and development rate of vitrified-thawed (VT) oocytes are lower than those of non-vitrified-thawed (non-VT) oocytes. OBJECTIVE To investigate the effect of adding hydroxypropyl cellulose (HPC) to the vitrification solution for bovine oocytes. MATERIALS AND METHODS For vitrification, bovine metaphase II oocytes were pretreated with a solution containing 10% ethylene glycol supplemented with 0, 10, 50, or 100 ug/mL HPC for 5 min, exposed to a solution containing 30% ethylene glycol supplemented with 0, 10, 50, or 100 ug/mL HPC for 30 s, and then directly plunged into liquid nitrogen. RESULTS The survival rate of oocytes was significantly higher in the 50 HPC group than in the 0, 10, and 100 HPC groups. The reactive oxygen species level was lower in the non-VT and 50 HPC groups than in the other groups. The mRNA levels of proapoptotic genes (Bax) were lower in the non-VT, 0, and 50 HPC groups than in the other groups. The mRNA levels of antiapoptotic genes (BCl2) were higher in the non-VT than in the other groups. The development rates of embryos (day 8) obtained via parthenogenetic activation (PA) were determined in the non-VT, 0 HPC, and 50 HPC groups. The cleavage rate was significantly higher in the non-VT group. CONCLUSION Supplementation of vitrification solution with HPC improves the survival of VT bovine oocytes and the development capacity of embryos derived from these oocytes via PA. doi.org/10.54680/fr23110110212.
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Affiliation(s)
- M J Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S E Lee
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - W Yoon
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - H J Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S H Kim
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - S H Oh
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - D G Lee
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - D B Pyeon
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243, Korea
| | - E Y Kim
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243; Mirae Cell Bio Inc., Seoul 04795, Korea
| | - S P Park
- Jeju National University Stem Cell Research Center, Seoul 63243; Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju 63243; Mirae Cell Bio Inc., Seoul 04795, Korea.
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11
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Cho SG, Kim YH, Park HJ, Park KS, Kim JH, Ahn SJ, Bom HS. Prediction of radiation-related cardiotoxicity using F-18 FDG PET in non-small-cell lung cancer. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Radiation-related cardiotoxicity has been refocused nowadays as the follow-up was increased amomg the patients with advanced lung cancer. The early recognition of the occult cardiotoxicity enables the early intervention preventing clinically significant cardiac events or worsening of severity.
Purpose
We aim to search whether the F-18 fluorodeoxyglucose positron emission tomography (FDG PET) performed immediately after radiotherapy could predict the late cardiac events.
Methods
We retrospectively enrolled 133 patients with locally advanced, unresectable stage III NSCLC who underwent F-18 fluorodeoxyglucose positron emission tomography (FDG PET) immediately after CCRT for the response evaluation and survived at least for 6 months. Heart was recontoured according to the RTOG 0617 secondary analysis atlas for the dose volume analysis. Standardized uptake values (SUV) of the left ventricular myocardium were measured on FDG PET images. The patients were regularly followed up for the disease progression and complications. The primary end-point was the cardiac events grade ≥2 based on the Common Terminology Criteria for Adverse Events (version 5.0).
Results
FDG PET was performed at median interval of 11 days after CCRT. Fourty-two patients experienced cardiotoxicity during a median follow-up of 47 months (range, 12 – 123 months). In univariable analysis, mean heart dose, maximum SUV of the left ventricle (LV SUVmax), white blood cell count, and diabetes were associated with the risk of cardiotoxicity. In multivariable analysis, only higher mean heart dose (>11.1 Gy, hazard ratio 3.930 [95% confidence interval 1.933–7.988]; p=0.0002) and higher LV SUVmax (>12.84, 2.189 [1.162–4.124]; p=0.0152) were independently associated with increased risk of cardiotoxicity. In subgroup analyses, LV SUVmax remained predictive of cardiotoxicity among those with higher mean heart dose, but not among those with lower mean heart dose.
Conclusion
Early FDG PET after CCRT for NSCLC could predict the late cardiac events, especially in patients with high dose cardiac irradiation.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): This work was supported by a grant of the Basic Science Research Program through the National Research Foundation funded by the Ministry of Education, Republic of Korea (Principal Investigator: Sang-Geon Cho)
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Affiliation(s)
- S G Cho
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - Y H Kim
- Chonnam National University Hwasun Hospital, Radiation Oncology, Hwasun, Korea (Republic of)
| | - H J Park
- Chonnam National University Hwasun Hospital, Cardiololgy, Hwasun, Korea (Republic of)
| | - K S Park
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - J H Kim
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - S J Ahn
- Chonnam National University Hwasun Hospital, Radiation Oncology, Hwasun, Korea (Republic of)
| | - H S Bom
- Chonnam National University Hwasun Hospital, Nuclear Medicine, Hwasun, Korea (Republic of)
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12
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Park HJ, Kong MJ, Jang HJ, Cho JI, Park EJ, Lee IK, Frøkiær J, Norregaard R, Park KM, Kwon TH. A nonbiodegradable scaffold-free cell sheet of genome-engineered mesenchymal stem cells inhibits development of acute kidney injury. Kidney Int 2021; 99:117-133. [PMID: 32853632 DOI: 10.1016/j.kint.2020.07.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 07/15/2020] [Accepted: 07/30/2020] [Indexed: 12/19/2022]
Abstract
Cell therapy using genome-engineered stem cells has emerged as a novel strategy for the treatment of kidney diseases. By exploiting genome editing technology, human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) secreting an angiogenic factors or an anti-inflammatory factor were generated for therapeutic application in acute kidney injury. Junction polymerase chain reaction analysis verified zinc finger nucleases-assisted integration of the desired gene into the hUC-MSCs. Flow cytometry and differentiation assays indicated that genome editing did not affect the differentiation potential of these mesenchymal stem cells. Protein measurement in conditioned media with the use of ELISA and immunoblotting revealed the production and secretion of each integrated gene product. For cell therapy in the bilateral ischemia-reperfusion mouse model of acute kidney injury, our innovative scaffold-free cell sheets were established using a non-biodegradable temperature-responsive polymer. One of each type of scaffold-free cell sheets of either the angiogenic factor vascular endothelial grown factor or angiopoietin-1, or the anti-inflammatory factor erythropoietin, or α-melanocyte-stimulating hormone-secreting hUC-MSCs was applied to the decapsulated kidney surface. This resulted in significant amelioration of kidney dysfunction in the mice with acute kidney injury, effects that were superior to intravenous administration of the same genome-engineered hUC-MSCs. Thus, our scaffold-free cell sheets of genome-engineered mesenchymal stem cells provides therapeutic effects by inhibiting acute kidney injury via angiogenesis or anti-inflammation.
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Affiliation(s)
- Hye-Jeong Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Min Jung Kong
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea; Department of Anatomy, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hyo-Ju Jang
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Jeong-In Cho
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Eui-Jung Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - In-Kyu Lee
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea; Department of Internal Medicine, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Jørgen Frøkiær
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Rikke Norregaard
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Kwon Moo Park
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea; Department of Anatomy, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Tae-Hwan Kwon
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea.
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13
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Jang HJ, Jung HJ, Han SY, Choi HJ, Park EJ, Park HJ, Kwon TH. P0013MAP KINASES-REGULATED PROTEINS IN SIGNALING PATHWAYS OF VASOPRESSIN IN KIDNEY COLLECTING DUCT. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa143.p0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and Aims
Activation of G protein-coupled vasopressin V2 receptor (V2R) is critical in water and electrolyte transport in the kidney collecting duct (CD) cells. Stimulation of V2R affects several downstream pathways, including PKA, PI3K/AKT, Wnt, and Ca2+/calmodulin. Previous studies have shown that MAP kinases are also involved as an apparent downstream signaling pathway of V2R. However, the role of MAP kinases and their substrate proteins in the vasopressin signaling, including the regulation of AQP2 expression and phosphorylation, are unclear. In the present study, substrates of MAP kinases were identified using bioinformatic analyses, and they were mapped on the downstream signaling pathways of V2R. Tripartite motif-containing protein 28 (TRIM28) was identified as a substrate of ERK1 as well as a vasopressin-responsive protein via bioinformatic tools. We further evaluated whether TRIM28 plays a role in vasopressin-mediated regulation of AQP2 in the kidney CD.
Method
To identify comprehensive substrates of MAP kinases in the kidney CD, we investigated 1) the expression of MAP kinases in CD cells by use of databases based on high-throughput profiles of transcriptome and proteome (http://hpcwebapps.cit.nih.gov/ESBL/Database/index.html); and 2) MAP kinases substrates expressed in the CD cells by use of protein phosphorylation databases (PhosphoNetworks and RegPhos 2.0). The identified substrates were mapped on the downstream signaling of V2R. Cellular and subcellular localization of selected substrate protein (TRIM28) was examined by immunohistochemistry. The role of TRIM28 in vasopressin-mediated AQP2 regulation was examined by quantitative real-time PCR (qRT-PCR) and semiquantitative immunoblotting after RNA interference of TRIM28 in mpkCCDc11 cells.
Results
Immunoblotting of mpkCCDc11 cells revealed that both p-ERK1/2 and pS261-AQP2 expression was decreased in response to dDAVP (10-9 M) stimulation. In silico analyses demonstrated that five MAP kinases (ERK1, ERK2, ERK3, JNK2, and MAPK p38 alpha) were identified as the MAP kinases expressed in kidney CD cells. Based on several protein kinase-substrates databases, 189 proteins were identified as the substrates of the five MAP kinases. In particular, sequential data mining revealed TRIM28, as the substrate of ERK1, has the only one phosphorylation site which was down-regulated by vasopressin stimulation. Since TRIM28 is a transcription cofactor and also a ubiquitin-protein E3 ligase, we examined whether TRIM28 is involved in the regulation of AQP2 expression as a mediator of MAP kinases action. Immunofluorescence labeling of mouse and rat kidneys revealed that TRIM28 was exclusively expressed in the nuclei of the tubular epithelial cells, including CD cells. dDAVP-induced AQP2 mRNA and protein up-regulation was significantly attenuated in mpkCCDc11 cells with siRNA-mediated knockdown of TRIM28.
Conclusion
We identify MAP kinase substrates in the kidney CD, which are mapped on the downstream signaling pathways of V2R. TRIM28 is identified as a substrate of MAP kinases that involves in vasopressin signaling pathways. TRIM28 is likely to play a role in the regulation of AQP2 expression, particularly in the AQP2 transcription.
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Affiliation(s)
- Hyo-Ju Jang
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
| | - Hyun Jun Jung
- Johns Hopkins University School of Medicine, Division of Nephrology Department of Medicine, Baltimore, United States of America
| | - Si-Yoon Han
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
| | - Hyo-Jung Choi
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
| | - Eui-Jung Park
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
| | - Hye-Jeong Park
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
| | - Tae-Hwan Kwon
- School of Medicine Kyungpook National University, Department of Biochemistry and Cell Biology, Daegu, Korea, Rep. of South
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14
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Cho BH, Cheon K, Lee KY, Jung YH, Han SW, Park JH, Choi HY, Cho HJ, Park HJ, Nam HS, Heo JH, Lee HS, Kim S, Kim YD. Association between body mass index and stroke severity in acute ischaemic stroke with non-valvular atrial fibrillation. Eur J Neurol 2020; 27:1672-1679. [PMID: 32392368 DOI: 10.1111/ene.14304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/30/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND PURPOSE The objective of this study was to investigate the association between body mass index (BMI) and both initial stroke severity at presentation and functional outcomes after acute ischaemic stroke (AIS) in patients with non-valvular atrial fibrillation (NVAF). METHODS Patients were categorized on the basis of their BMI into underweight (BMI <18.5, n = 111), normal (18.5 ≤ BMI <25, n = 1036) and overweight to obese (BMI ≥25, n = 472) groups. Initial stroke severity was assessed using the National Institutes of Health Stroke Scale (NIHSS) score and functional outcomes were assessed using the modified Rankin Scale score at discharge. The differences in stroke severity and functional outcomes were compared between groups using robust log-linear regression with a Poisson distribution and binary logistic regression analysis. RESULTS A total of 1619 AIS patients with NVAF from six hospitals were included. Compared with the NIHSS scores [median 5, interquartile range (IQR) 2-14] of normal-weight patients, the NIHSS scores (median 9, IQR 4-19) of underweight patients were more likely to be higher, whereas those of overweight to obese patients were lower (median 4, IQR 1-12) (P < 0.001). In terms of functional outcomes after stroke, underweight patients had a higher risk of poor functional outcomes (odds ratio 1.78, 95% confidence interval 1.09-2.56, P = 0.01) but overweight to obese patients had no significant difference in functional outcomes compared with normal-weight patients. CONCLUSION An inverse association was found between BMI and stroke severity in AIS patients with NVAF. This suggests the presence of an obesity paradox for short-term outcomes in patients with NVAF.
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Affiliation(s)
- B-H Cho
- Department of Neurology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.,Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - K Cheon
- Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - K-Y Lee
- Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Y H Jung
- Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea.,Department of Neurology, Changwon Fatima Hospital, Changwon, Korea
| | - S W Han
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - J H Park
- Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - H-Y Choi
- Department of Neurology, Kyung Hee University School of Medicine, Kyung Hee University Hospital, Gangdong, Seoul, Korea
| | - H-J Cho
- Department of Neurology, Pusan National University Hospital, Pusan National University College of Medicine and Biomedical Research Institute, Busan, Korea
| | - H J Park
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.,Department of Neurology, Brain Research Institute, Keimyung University School of Medicine, Daegu, Korea
| | - H S Nam
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - J H Heo
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - H S Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - S Kim
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - Y D Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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15
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Jang HJ, Jung HJ, Choi HJ, Park EJ, Park HJ, Kwon TH. MAP kinases‐Regulated Proteins in Downstream Signaling Pathways of Vasopressin V2 Receptor in Kidney Collecting Duct. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.03844] [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: 11/11/2022]
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16
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Cho KH, Park HJ, Kim JR. Decrease in Serum HDL-C Level Is Associated with Elevation of Blood Pressure: Correlation Analysis from the Korean National Health and Nutrition Examination Survey 2017. Int J Environ Res Public Health 2020; 17:ijerph17031101. [PMID: 32050502 PMCID: PMC7036966 DOI: 10.3390/ijerph17031101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 12/13/2022]
Abstract
A low-serum, high-density lipoproteins-cholesterol (HDL-C) level and high blood pressure (BP) are independent risk factors for cardiovascular disease and dementia. In the present study, in order to find putative correlation between low HDL-C and hypertension, 4552 subjects (20-80 years old) were selected from the Korean National Health And Nutrition Examination Survey 2017 (KNHANES VII-2, n = 2017 men, n = 2535 women). They were classified into four levels of blood pressure, ranging from BP1 (normal, below 120/80 mmHg for systolic BP (SBP)/diastolic BP (DBP), BP2 (prehypertension, 120/80 to 139/89 mmHg), BP3 (hypertension stage 1, 140/90-159/99 mmHg), and BP4 (hypertension stage 2, higher than 160/100 mmHg). Generally, in the total population, a higher SBP level and age were associated with a lower HDL-C in both genders. However, DBP was not associated with age in men. In the total population, Pearson's correlation analysis revealed that SBP (r = -0.188, p < 0.001) and DBP (r = -0.198, p < 0.001) showed negative correlations with percentage of HDL-C in total cholesterol (TC), HDL-C/TC (%). In both genders, HDL-C gradually decreased with age and HDL-C/TC (%) was more accurate in expressing a correlation with BP. Women showed a more distinct decrease in HDL-C with an elevation of BP and age than men. Both elevation of DBP and SBP were associated with a decrease in HDL-C, around 2.3-2.4 mg/dL, between normal range and hypertension 2 stage. Additionally, DBP was significantly associated with HDL-C/TC (%) (men: r = -0.136, p < 0.001; women: r = -0.152, p < 0.001), while HDL-C did not show a significant association with a change in DBP. In conclusion, SBP was positively correlated with age, but DBP did not change significantly with age. The correlation of BP and HDL-C depending on age showed that SBP gradually increased and HDL-C decreased with an increase in age. The percentage of HDL-C in TC was more significantly associated with a change in SBP and DBP in both genders.
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Affiliation(s)
- Kyung-Hyun Cho
- Korea Research Institute of Lipoproteins, Medical Innovation Complex, Daegu 41061, Korea;
- LipoLab, Yeungnam University, Gyeongsan 712-749, Korea
- Department of Biochemistry and Molecular Biology, Smart-Aging Convergence Research Center, College of Medicine, Yeungnam University, Daegu 705-717, Korea;
- Correspondence: ; Tel.: +82-53-964-1990; Fax: +82-53-965-1992
| | - Hye-Jeong Park
- Korea Research Institute of Lipoproteins, Medical Innovation Complex, Daegu 41061, Korea;
- LipoLab, Yeungnam University, Gyeongsan 712-749, Korea
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Smart-Aging Convergence Research Center, College of Medicine, Yeungnam University, Daegu 705-717, Korea;
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Park EJ, Jung HJ, Choi HJ, Jang HJ, Park HJ, Nejsum LN, Kwon TH. Exosomes co-expressing AQP5-targeting miRNAs and IL-4 receptor-binding peptide inhibit the migration of human breast cancer cells. FASEB J 2020; 34:3379-3398. [PMID: 31922312 DOI: 10.1096/fj.201902434r] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [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: 09/23/2019] [Revised: 12/27/2019] [Accepted: 12/27/2019] [Indexed: 12/18/2022]
Abstract
Aquaporin-5 (AQP5) plays a role in breast cancer cell migration. This study aimed to identify AQP5-targeting miRNAs and examine their effects on breast cancer cell migration through exosome-mediated delivery. Bioinformatic analyses identified miR-1226-3p, miR-19a-3p, and miR-19b-3p as putative regulators of AQP5 mRNA. Immunoblotting revealed a decrease of AQP5 protein abundance when each of these miRNAs was transfected into human breast cancer MDA-MB-231 cells. Quantitative real-time PCR demonstrated the reduction of AQP5 mRNA expression by the transfection of miR-1226-3p and a luciferase reporter assay revealed the reduction of AQP5 translation after the transfection of miR-19b-3p in MDA-MB-231 cells. Consistently, the transfection of each miRNA impeded cell migration. Pathway enrichment analyses showed that these three miRNAs regulate target genes, which were predominantly enriched in the gap junction pathway. For the efficient delivery of AQP5-targeting miRNAs to breast cancer cells, exosomes expressing both miRNAs and a peptide targeting interleukin-4 receptor, which is highly expressed in breast cancer cells, were bioengineered and their inhibitory effects on AQP5 protein expression and cell migration were demonstrated in MDA-MB-231 cells. Taken together, AQP5-regulating miRNAs are identified, which could be exploited for the inhibition of breast cancer cell migration via the exosome-mediated delivery.
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Affiliation(s)
- Eui-Jung Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hyun Jun Jung
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hyo-Jung Choi
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hyo-Ju Jang
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hye-Jeong Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Lene N Nejsum
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Tae-Hwan Kwon
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
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18
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Ko A, Park HJ, Lee ES, Park SB, Kim YK, Choi SY, Ahn S. Comparison of the diagnostic performance of the 2017 and 2018 versions of LI-RADS for hepatocellular carcinoma on gadoxetic acid enhanced MRI. Clin Radiol 2019; 75:319.e1-319.e9. [PMID: 31858990 DOI: 10.1016/j.crad.2019.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/13/2019] [Indexed: 12/18/2022]
Abstract
AIM To compare the diagnostic performance of the 2017 (v2017) and 2018 versions (v2018) of the Liver Imaging-Reporting and Data System (LI-RADS) for hepatocellular carcinoma (HCC) using gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI) and to evaluate the effect in v2018. MATERIALS AND METHODS Treatment-naive patients at high-risk for HCC who underwent Gd-EOB-MRI were included. The LI-RADS categories were assigned according to v2017 and v2018. The diagnostic performances were compared between v2017 and v2018 according to the size and combination of imaging features. RESULTS A total of 117 patients with 137 observations were identified, including 89 HCCs; 76.2% (64/84) of observations with threshold growth were re-classified as subthreshold growth when using v2018 instead of v2017. The final categories changed in nine (14%) cases. For the combination of LR-5/LR-5V, there were no significant differences in sensitivity and specificity between the two versions (sensitivity, 64% versus 58.4%; specificity, 87.5% versus 85.4%; all p>0.05). For the combination of LR-4 and LR-5/5V, the diagnostic performance of v2018 was inferior to that of v2017 when considering only major features (accuracy, 86.1% versus 80.3%, respectively; p=0.013), particularly in observations measuring 10-20 mm, but was comparable after adding the ancillary features (accuracy, 86.9% versus 86.1%, respectively; p=1.00). CONCLUSION In LI-RADS v2018, although a considerable number of observations re-classified subthreshold growth, changes in the assigned categories were insignificant; overall diagnostic performance was comparable to that of v2017, but v2018 might emphasise the value of ancillary features in combination with major features for determining the probability of HCC.
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Affiliation(s)
- A Ko
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - H J Park
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea.
| | - E S Lee
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - S B Park
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - Y K Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S-Y Choi
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - S Ahn
- Department of Mathematics, Ajou University, Suwon, Republic of Korea
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19
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Park HJ, Cho JH, Kim HJ, Park JY, Lee HS, Byun MK. The effect of low body mass index on the development of chronic obstructive pulmonary disease and mortality. J Intern Med 2019; 286:573-582. [PMID: 31215064 DOI: 10.1111/joim.12949] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Sarcopenia may worsen disease progression and lead to poor outcomes in chronic obstructive pulmonary disease (COPD). OBJECTIVES We aimed to determine the effect of BMI on the development of COPD and mortality. METHODS We enrolled 437 584 participants registered in the physical health check-up cohort database of the Korean National Health Interview Survey from 2002 to 2003, and we defined COPD diagnosis based on the ICD-10 code and prescribed medication. BMI (kg m-2 ) classified them to five groups (low BMI < 18.5, normal BMI 18.5-23, overweight 23-25, obesity 25-30, severe obesity ≥30) at baseline. RESULTS Participants in the low BMI group had a significantly higher rate of COPD development for 13 years (7.6%) than those in other groups (3.4-4.1%, P < 0.0001). Amongst never or light smokers, COPD development in the low BMI group (5.6-6.7%) was significantly higher than that in other groups (2.8-4.7%). Similarly, amongst participants with a smoking history of ≥30 years, COPD development in the low BMI group (20.1%) was higher than those in other groups (8.4-12.4%). On multivariable analysis, normal or higher than normal body weight was significantly protective against the development of COPD (hazard ratio [HR], 0.609-0.739,) compared to low BMI. COPD-free-survival (HR, 0.491-0.622) and overall survival (HR, 0.440-0.585) were also better in them compared to those with low BMI (all P < 0.0001). CONCLUSIONS Low BMI is an important risk factor for COPD development and mortality. Maintaining adequate body weight may reduce the risk for COPD development and mortality.
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Affiliation(s)
- H J Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J H Cho
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H J Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J-Y Park
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - H S Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - M K Byun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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20
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Bae SA, Yoon HJ, Kim KH, Kim HY, Park HJ, Cho JY, Jeong MH, Park JC. P671Impacts of echocardiography-defined pulmonary hypertension on clinical outcome in patients with multiple myeloma. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pulmonary hypertension (PH) is a rarely reported complication of multiple myeloma (MM). PH of MM is usually mild to moderate and can be secondary to a variety of conditions, including left ventricular dysfunction, diastolic dysfunction, chronic heart failure, treatment-related toxicity, thrombophilic condition and precapillary involvement. However, only few reports regarding PH in MM incidence and prognosis exist up to now.
Purpose
The purpose of this study was to investigate the risk factors of transthoracic echocardiography-defined PH and its impact on clinical outcome in patients with MM.
Methods
A total of 277 MM patients was included and divided into 2 groups–those non-pulmonary hypertension (PH) or those with PH, based on the results of the transthoracic echocardiography (TTE); PH group (n=143, 60.9±9.2 years, 68 males) versus non-PH group (n=134, 55.9±11.5 years, 72 males). We analyzed propensity score matching and multiple imputation method were used to deal with the missing data in echocardiographic characteristics.
Results
During the follow-up period (median 618 days), all-cause death occurred in 79 (28.5%) patients and 41 patients (14.8%) died from cardiovascular causes (including acute decompensated heart failure, fatal MI, sudden cardiac arrest). In the Kaplan-Meier survival analysis of crude population and propensity-matched population, cumulative overall survival and cardiovascular death (CVD)-free survival were significantly lower in the PH group than in the non-PH group (p<0.001). In propensity-matched population, estimated pulmonary artery pressure >35mmHg in TTE, congestive heart failure, and DM were significant independent predictors of all-cause death.
KM curves in MM stratified by PH
Conclusion
This study demonstrates that the presence of PH, congestive heart failure, and DM is an independent prognostic factor for all-cause death in MM patients with MM. These results highlight the risk associated cardiovascular disease in MM patients and emphasize that management strategies that prevent deterioration of cardiac function are essential.
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Affiliation(s)
- S A Bae
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - H J Yoon
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - K H Kim
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - H Y Kim
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - H J Park
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - J Y Cho
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
| | - J C Park
- Chonnam National University Medical School, Department of Cardiovascular Medicine, Gwangju, Korea (Republic of)
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21
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Park HJ, Kim SS, Jin HS. Genetic Polymorphisms of SLC8A1Are Associated with Hypertension and Left Ventricular Hypertrophy in the Korean Population. Korean J Clin Lab Sci 2019. [DOI: 10.15324/kjcls.2019.51.3.286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
- Hye-Jeong Park
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan, Korea
| | - Sung-Soo Kim
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan, Korea
| | - Hyun-Seok Jin
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan, Korea
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22
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Park EJ, Jung HJ, Choi HJ, Jang HJ, Park HJ, Kwon TH. Abstract 2594: Exosomes co-expressing aquaporin-5-targeting miRNAs and IL-4 receptor-binding peptide inhibit the migration of human breast cancer cells. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-2594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Water channel aquaporins (AQPs) play a critical role in transcellular water transport. Recent studies revealed that dysregulation of AQPs is highly correlated with the migration of cancer cells and metastasis of tumor in vitro and in vivo models. In particular, we have demonstrated that increased expression of aquaporin-5 (AQP5) is associated with breast cancer cell migration, metastasis, and poor prognosis in human patients. We aimed to identify novel AQP5-targeting miRNAs and to examine the strategy for the post-transcriptional regulation of AQP5 using exosome-mediated microRNA (miRNA) delivery. Multiple tools of bioinformatics were used to identify AQP5-targeting miRNAs and miRNA target enrichment analysis revealed the cellular signaling pathways associated with the identified miRNAs. To examine the exosome-mediated miRNA delivery systems, exosomes containing both AQP5-targeting miRNAs and a peptide (CRKRLDRNC: IL-4RPep1) targeting the interleukin-4 receptor (IL-4R), which is highly expressed in breast cancer cells, were applied to triple-negative breast cancer cell line MDA-MB-231. Putative AQP5-targeting miRNAs were identified using DIANA Tool. Thereafter, three additional bioinformatic tools (TargetScan, miRDB and MiRanda Tools) were applied to select the miRNAs that were commonly identified from at least 3 different programs. Three miRNAs, miR-1226-3p, miR-19a-3p and miR-19b-3p, were identified as putative regulators of AQP5. Protein expression of AQP5 was decreased when mimic of each miRNA was transfected into MDA-MB-231 cells. Quantitative real-time PCR demonstrated a decrease of AQP5 mRNA expression by miR-1226-3p mimic and luciferase reporter assay revealed a reduction of AQP5 translation by miR-19b mimic in MDA-MB-231 cells. Consistently, cell migration was inhibited by mimic of each miRNA. miRNA target enrichment analysis showed that target genes of three miRNAs were predominantly enriched in the gap junction regulatory pathway. This suggested that these miRNAs are associated with breast cancer cell migration and, also, they might be involved in cell-cell adhesion. For the delivery of AQP5-targeting miRNAs to MDA-MB-231 cells, exosomes containing both AQP5-targeting miRNAs and a peptide (IL-4RPep1) were constructed in HEK293T cells. Both AQP5 protein expression and cell migration were significantly decreased in MDA-MB-231 cells when they were incubated with the exosome-containing culture media obtained from the culture of HEK293T cells expressing both AQP5-targeting miRNAs and IL-4RPep1. In conclusion, AQP5-regulating miRNAs are identified and their target genes are found to be mainly involved in the gap junction regulatory pathway. The exosome-mediated delivery of AQP5-targeting miRNAs could be exploited for the inhibition of breast cancer cell migration associated with AQP5.
Citation Format: Eui-Jung Park, Hyun Jun Jung, Hyo-Jung Choi, Hyo-Ju Jang, Hye-Jeong Park, Tae-Hwan Kwon. Exosomes co-expressing aquaporin-5-targeting miRNAs and IL-4 receptor-binding peptide inhibit the migration of human breast cancer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2594.
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Affiliation(s)
- Eui-Jung Park
- 1School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyun Jun Jung
- 2School of Medicine, University of Maryland, Baltimore, MD
| | - Hyo-Jung Choi
- 1School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyo-Ju Jang
- 1School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hye-Jeong Park
- 1School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Tae-Hwan Kwon
- 1School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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23
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Choi HJ, Park EJ, Jang HJ, Park HJ, Kwon TH. FP014SORTING NEXIN 27: A NOVEL PDZ DOMAIN-MEDIATED INTERACTING PROTEIN WITH AQUAPORIN-2 IN KIDNEY COLLECTING DUCT. Nephrol Dial Transplant 2019. [DOI: 10.1093/ndt/gfz106.fp014] [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: 11/13/2022] Open
Affiliation(s)
- Hyo-Jung Choi
- Kyungpook National University, Daegu, Republic of Korea
| | - Eui-Jung Park
- Kyungpook National University, Daegu, Republic of Korea
| | - Hyo-Ju Jang
- Kyungpook National University, Daegu, Republic of Korea
| | | | - Tae-Hwan Kwon
- Kyungpook National University, Daegu, Republic of Korea
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24
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Park HJ, Yadav D, Jeong DJ, Kim SJ, Bae MA, Kim JR, Cho KH. Short-Term Consumption of Cuban Policosanol Lowers Aortic and Peripheral Blood Pressure and Ameliorates Serum Lipid Parameters in Healthy Korean Participants: Randomized, Double-Blinded, and Placebo-Controlled Study. Int J Environ Res Public Health 2019; 16:ijerph16050809. [PMID: 30841655 PMCID: PMC6427682 DOI: 10.3390/ijerph16050809] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 02/18/2019] [Accepted: 02/27/2019] [Indexed: 12/17/2022]
Abstract
The current study was designed to investigate the short-term effects of policosanol consumption on blood pressure (BP) and the lipid parameters in healthy Korean participants with prehypertension. A total of 84 healthy participants were randomly allocated to three groups receiving placebo, 10 mg of policosanol, or 20 mg of policosanol for 12 weeks. Based on an average of three measurements of peripheral BP, the policosanol 20 mg group exhibited the most significant reduction, that is, up to 7.7% reduction of average systolic BP (SBP) from 136.3 ± 6.1 mmHg (week 0) to 125.9 ± 8.6 mmHg (week 12, p < 0.001). Between group comparisons using repeated measures ANOVA showed that the policosanol 20 mg group had a significant reduction of SBP at 12 weeks (p = 0.020) and a reduction of diastolic BP (DBP) at 8 weeks (p = 0.041) and 12 weeks (p = 0.035). The policosanol 10 mg and 20 mg groups showed significant reductions in aortic SBP of 7.4% and 8.3%, respectively. The policosanol groups showed significant reductions of total cholesterol (TC) of 9.6% and 8.6% and low-density lipoproteins (LDL-C) of 21% and 18% for 10 mg and 20 mg of policosanol, respectively. Between group comparisons using repeated measures ANOVA showed that the policosanol (10 mg and 20 mg) groups at 12 weeks had a significant reduction of TC (p = 0.0004 and p = 0.001) and LDL-C (p = 0.00005 and p = 0.0001) and elevation of %HDL-C (p = 0.048 and p = 0.014). In conclusion, 12-week consumption of policosanol resulted in significant reductions of peripheral SBP and DBP, aortic SBP and DBP, mean arterial pressure (MAP), and serum TC and LDL-C with elevation of % HDL-C.
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Affiliation(s)
- Hye-Jeong Park
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan 712-749, Korea.
| | - Dhananjay Yadav
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea.
- LipoLab, Yeungnam University, Gyeongsan 712-749, Korea.
| | - Da-Jeong Jeong
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan 712-749, Korea.
| | - Suk-Jeong Kim
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan 712-749, Korea.
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea.
- LipoLab, Yeungnam University, Gyeongsan 712-749, Korea.
| | - Myung-Ae Bae
- Drug Discovery Platform Technology Team, Korea Research Institute of Chemical Technology, Taejon 305-343, Korea.
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Smart-Aging Convergence Research Center, College of Medicine, Yeungnam University, Daegu 705-717, Korea.
| | - Kyung-Hyun Cho
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan 712-749, Korea.
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea.
- LipoLab, Yeungnam University, Gyeongsan 712-749, Korea.
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25
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Kim H, Park W, Choi DH, Ahn SJ, Kim SS, Kim ES, Lee JH, Lee KC, Kim JH, Lee HS, Kim JH, Kim MY, Park HJ, Kim K, Song SH, Kwon J, Lee IJ, Kim TH, Kim TG, Chang AR, Cho O, Jeong BK, Ha B, Lee J, Ki Y. Abstract OT2-04-02: A phase 3 study of post-lumpectomy radiotherapy to whole breast + regional lymph nodes vs whole breast alone for patients with pN1 breast cancer treated with taxane-based chemotherapy (KROG 1701): Trial in progress. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot2-04-02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
In patients with early stage breast cancer, regional nodal irradiation (RNI) is added to whole breast irradiation (WBI) in order to control microscopic regional disease and to prevent systemic spread of cancer. According to recent randomized trials (MA.20 and EORTC 22922-10925), prophylactic RNI was associated with improvement in disease-free survival (DFS) in the patients with high-risk node negative or pN1 breast cancer. However, systemic agents now known to improve loco-regional control, such as taxane or endocrine therapy, were prescribed to a small percentage of patients in the studies. The benefit of RNI found in the previous studies might be attributed to incorporation of less effective systemic treatments. The impact of prophylactic RNI in pN1 breast cancer should be evaluated in the patients receiving modern systemic treatment. The current study was conducted to compare the effect of post-lumpectomy WBI vs WBI plus RNI on DFS in pN1 breast cancer patients who received adjuvant taxane-based chemotherapy.
Methods
This study is a multicenter, phase 3, randomized controlled non-inferiority trial (NCT03269981). Eligibility criteria are ≥ 20 years female; pathologically proven invasive carcinoma of the breast; one to three positive axillary lymph nodes (pN1) in pathologic specimen; receiving breast-conserving surgery followed by taxane-based chemotherapy; having adjuvant endocrine therapy or anti-HER2 treatment according to molecular subtype of tumor. Patients are randomly assigned in a 1:1 ratio to receive WBI or WBI plus RNI. Patient randomization was stratified by molecular subtype of tumor (i.e. luminal A/luminal B/luminal HER2/HER2-enriched/triple-negative) and methods of axillary management (i.e. sentinel lymph node biopsy/axillary lymph node dissection). The primary outcome is DFS. The secondary outcomes include DFS according to molecular subtype, treatment-related toxicity, and patient's quality of life per EORTC QLQ-C30 and QLQ-BR23. Patients will be followed for survival and disease recurrence for seven years. A total of 1,926 patients are planned to be enrolled, with recruitment initiated in April 2017. As of June 2018, a total of 236 patients were enrolled.
Acknowledgement
This study was supported by a grant from the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea (grant number: HA17C0043010018).
Citation Format: Kim H, Park W, Choi DH, Ahn SJ, Kim SS, Kim ES, Lee JH, Lee KC, Kim JH, Lee H-S, Kim JH, Kim MY, Park HJ, Kim K, Song SH, Kwon J, Lee IJ, Kim TH, Kim TG, Chang AR, Cho O, Jeong BK, Ha B, Lee J, Ki Y. A phase 3 study of post-lumpectomy radiotherapy to whole breast + regional lymph nodes vs whole breast alone for patients with pN1 breast cancer treated with taxane-based chemotherapy (KROG 1701): Trial in progress [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT2-04-02.
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Affiliation(s)
- H Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - W Park
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - DH Choi
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SJ Ahn
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SS Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - ES Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - KC Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - H-S Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - MY Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - HJ Park
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - K Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SH Song
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - J Kwon
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - IJ Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - TH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - TG Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - AR Chang
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - O Cho
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - BK Jeong
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - B Ha
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - J Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - Y Ki
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
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Kim K, Jeong Y, Shin KH, Kim JH, Ahn SD, Kim SS, Suh CO, Kim YB, Choi DH, Park W, Cha J, Chun M, Lee DS, Lee SY, Kim JH, Park HJ. Abstract P3-12-12: Impact of regional nodal irradiation for breast cancer patients with supraclavicular and/or internal mammary lymph node involvement: A multicenter, retrospective study (KROG 16-14). Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-12-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: To evaluate the treatment outcomes of radiotherapy (RT) for breast cancer with ipsilateral supraclavicular (SCL) and/or internal mammary (IMN) lymph node involvement.
Methods: A total of 353 patients from 11 institutions were included. One hundred and thirty-six patients had SCL involvement, 148 had IMN involvement, and 69 had both. All patients received neoadjvant systemic therapy followed by breast conserving surgery or mastectomy, and postoperative RT to whole breast/chest wall. As for regional lymph node irradiation, SCL RT was given to 344 patients, and IMN RT to 236 patients. The median RT dose was 50.4 Gy.
Results: The median follow-up duration was 61 months (range, 7-173). In-field progression was present in SCL (n=20) and/or IMN (n=7). The 5-year disease-free survival (DFS) and overall survival rates were 57.8% and 75.1%, respectively. On multivariate analysis, both SCL/IMN involvement, number of axillary lymph node ≥4, triple negative subtype, and mastectomy were significant adverse prognosticators for DFS (p = 0.022, 0.001, 0.001, and 0.004, respectively). Regarding the impact of regional nodal irradiation, SCL RT dose ≥54 Gy was not associated with DFS (5-yr rate, 52.9% vs. 50.9%, p = 0.696) in SCL-involved patients, and the receipt of IMN RT was not associated with DFS (5-yr rate, 56.1% vs. 78.1%, p = 0.099) in IMN-involved patients.
Conclusion: Neoadjuvant chemotherapy followed by surgery and postoperative RT achieved an acceptable in-field regional control rate in patients with SCL and/or IMN involvement. However, a higher RT dose to SCL or IMN RT was not associated with the improved DFS in these patients.
Citation Format: Kim K, Jeong Y, Shin KH, Kim JH, Ahn SD, Kim SS, Suh C-O, Kim YB, Choi DH, Park W, Cha J, Chun M, Lee DS, Lee SY, Kim JH, Park HJ. Impact of regional nodal irradiation for breast cancer patients with supraclavicular and/or internal mammary lymph node involvement: A multicenter, retrospective study (KROG 16-14) [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-12-12.
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Affiliation(s)
- K Kim
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - Y Jeong
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - KH Shin
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - JH Kim
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - SD Ahn
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - SS Kim
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - C-O Suh
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - YB Kim
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - DH Choi
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - W Park
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - J Cha
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - M Chun
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - DS Lee
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - SY Lee
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - JH Kim
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
| | - HJ Park
- Ewha Womans University College of Medicine, Seoul, Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Seoul National University College of Medicine, Seoul, Korea; Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea; Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Wonju Severance Christian Hospital, Wonju, Korea; Ajou University School of Medicine, Suwon, Korea; Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea; Chonbuk National University Hospital, Jeonju, Korea; Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea; Hanyang University College of Medicine, Seoul, Korea
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Park HJ, Kim S, Lee JH, Kim HT, Seung W, Son Y, Kim TY, Khan U, Park NM, Kim SW. Self-Powered Motion-Driven Triboelectric Electroluminescence Textile System. ACS Appl Mater Interfaces 2019; 11:5200-5207. [PMID: 30608128 DOI: 10.1021/acsami.8b16023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In recent years, smart light-emitting-type electronic devices for wearable applications have been required to have flexibility and miniaturization, which limits the use of conventional bulk batteries. Therefore, it is important to develop a self-powered light-emitting system. Our study demonstrates the potential of a new self-powered luminescent textile system that emits light driven by random motions. The device is a ZnS:Cu-based textile motion-driven electroluminescent device (TDEL) fabricated onto the woven fibers of a ZnS:Cu-embedded PDMS (polydimethylsiloxane) composite. Triboelectrification, which raises a discontinuous electric field, is generated by the contact separation movement of the friction material. Therefore, light can be generated via triboelectrification by the mechanical deformation of the ZnS:Cu-embedded PDMS composite. This study showed that the TDEL emitted light from the internal triboelectric field during contact and from the external triboelectric field during separation. Light was then emitted twice in a cycle, suggesting that continuous light can be emitted by various movements, which is a key step in developing self-powered systems for wearable applications. Therefore, this technology is a textile motion-driven electroluminescence system based on composite fibers (ZnS:Cu + PDMS) and PTFE fibers, and the proposed self-emitting textile system can be easily fabricated and applied to smart clothes.
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Affiliation(s)
- Hye-Jeong Park
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - SeongMin Kim
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Jeong Hwan Lee
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Hyoung Taek Kim
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Wanchul Seung
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Youngin Son
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Tae Yun Kim
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Usman Khan
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
| | - Nae-Man Park
- Electronics and Telecommunications Research Institute (ETRI) , Daejeon 34129 , Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering , Sungkyunkwan University (SKKU) , Suwon 16419 , Republic of Korea
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28
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Jeong Y, Jin B, Lee HW, Park HJ, Park JY, Kim DY, Han KH, Ahn SH, Kim S. Evolution and persistence of resistance-associated substitutions of hepatitis C virus after direct-acting antiviral treatment failures. J Viral Hepat 2018; 25:1251-1259. [PMID: 29768695 DOI: 10.1111/jvh.12932] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 03/01/2018] [Accepted: 04/03/2018] [Indexed: 01/19/2023]
Abstract
Daclatasvir plus asunaprevir (DCV+ASV) treatment is an all-oral direct-acting antiviral (DAA) therapy for the genotype 1b HCV-infected patients. In this study, we investigated how resistance-associated substitutions (RASs) evolved after treatment failures and assessed the effect of those substitutions on viral fitness. Sequencing of NS5A and NS3 revealed typical RASs after treatment failures. Interestingly, the RASs of NS3 reverted to the wild-type amino acid within 1 year after treatment failures. However, the RASs of NS5A were stable and did not change. The effect of NS5A and NS3 RASs on viral RNA replication was assessed after mutagenic substitution in the genotype 1b HCV RNA. Among single substitutions, the effect of D168V was more substantial than the others and the effect of the triple mutant combination (D168V+L31V+Y93H) was the most severe. The RAS at NS5A Y93 affected both viral RNA replication and virus production. Finally, the effect of trans-complementation of NS5A was demonstrated in our co-transfection experiments and these results suggest that such a trans-complementation effect of NS5A may help maintain the NS5A RASs for a long time even after cessation of the DAA treatment. In conclusion, the results from this investigation would help understand the emergence and persistence of RASs.
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Affiliation(s)
- Y Jeong
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - B Jin
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - H W Lee
- Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - H J Park
- Yonsei Liver Center, Severance Hospital, Seoul, Korea
| | - J Y Park
- Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - D Y Kim
- Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - K-H Han
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - S H Ahn
- Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - S Kim
- Yonsei Liver Center, Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.,Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, Korea
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29
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Jang JK, Lee JL, Park SH, Park HJ, Park IJ, Kim JH, Choi SH, Kim J, Yu CS, Kim JC. Magnetic resonance tumour regression grade and pathological correlates in patients with rectal cancer. Br J Surg 2018; 105:1671-1679. [PMID: 29893988 DOI: 10.1002/bjs.10898] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/15/2018] [Accepted: 05/03/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Evidence to support the specific use of magnetic resonance tumour regression grade (mrTRG) is inadequate. The aim of this study was to investigate the pathological characteristics of mrTRG after chemoradiotherapy (CRT) for rectal cancer and the implications for surgery. METHODS Patients undergoing long-course CRT (45-50 Gy plus a booster dose of 4-6 Gy) for mid or low rectal cancer (cT3-4 or cN+ without metastasis) between 2011 and 2015 who had post-CRT rectal MRI before surgery were included retrospectively. Three board-certified experienced radiologists assessed mrTRG. mrTRG was correlated with pathological tumour regression grade (pTRG), ypT and ypN. In a subgroup of patients with mrTRG1-2 and no tumour spread (such as nodal metastasis) on MRI, the projected rate of completion total mesorectal excision (TME) if they underwent transanal excision (TAE) and had a ypT status of ypT2 or higher was estimated, and recurrence-free survival was calculated according to the operation (TME or TAE) that patients had actually received. RESULTS Some 439 patients (290 men and 149 women of mean(s.d.) age 62·2(11·4) years) were analysed. The accuracy of mrTRG1 for predicting pTRG1 was 61 per cent (40 of 66), and that for ypT1 or less was 74 per cent (49 of 66). For mrTRG2, these values were 22·3 per cent (25 of 112) and 36·6 per cent (41 of 112) respectively. Patients with mrTRG1 and mrTRG2 without tumour spread were ypN+ in 3 per cent (1 of 29) and 16 per cent (8 of 50) respectively. Assuming mrTRG1 or mrTRG1-2 with no tumour spread on post-CRT MRI as the criteria for TAE, the projected completion TME rate was 26 per cent (11 of 43) and 41·0 per cent (41 of 100) respectively. For the 100 patients with mrTRG1-2 and no tumour spread, recurrence-free survival did not differ significantly between TME (79 patients) and TAE (21) (adjusted hazard ratio 1·86, 95 per cent c.i. 0·42 to 8·18). CONCLUSION Patients with mrTRG1 without tumour spread may be suitable for TAE.
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Affiliation(s)
- J K Jang
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J L Lee
- Division of Colon and Rectal Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - S H Park
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - H J Park
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - I J Park
- Division of Colon and Rectal Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J H Kim
- Department of Radiation Oncology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - S H Choi
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - C S Yu
- Division of Colon and Rectal Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
| | - J C Kim
- Division of Colon and Rectal Surgery, Department of Surgery, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, South Korea
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Kim SJ, Yadav D, Park HJ, Kim JR, Cho KH. Long-Term Consumption of Cuban Policosanol Lowers Central and Brachial Blood Pressure and Improves Lipid Profile With Enhancement of Lipoprotein Properties in Healthy Korean Participants. Front Physiol 2018; 9:412. [PMID: 29765328 PMCID: PMC5939616 DOI: 10.3389/fphys.2018.00412] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/04/2018] [Indexed: 12/15/2022] Open
Abstract
Metabolic syndrome is closely associated with higher risk of hypertension, cardiovascular disease (CVD), diabetes and stroke. The aim of the present study was to investigate the long-term effects of policosanol supplementation on blood pressure (BP) and the lipid profile in healthy Korean participants with pre-hypertension (systolic 120–139 mmHg, diastolic 85–89 mmHg). This randomized, double-blinded, and placebo-controlled trial included 84 healthy participants who were randomly assigned to three groups receiving 10 mg of policosanol, 20 mg of policosanol, or placebo for 24 weeks. The BP, lipid profile, and anthropometric factors were measured pre- and post-intervention and then compared. Based on an average of three measurements of brachial BP, the policosanol 20 mg group showed the most significant reduction in average systolic BP (SBP) from 138 ± 12 mmHg at week 0 to 126 ± 13 mmHg at week 24 (p < 0.0001). The policosanol 20 mg group also showed significant reductions in aortic SBP and DBP up to 9% (p = 0.00057) and 8% (p = 0.004), respectively compared with week 0. Additionally, blood renin and aldosterone levels were significantly reduced in the policosanol 20 mg group up to 63% (p < 0.01) and 42% (p < 0.05), respectively, at week 24. For the blood lipid profile, the policosanol 10 mg and 20 mg groups showed significant reductions in total cholesterol (TC) of around 8% (p = 0.029) and 13% (p = 0.0004), respectively, at week 24 compared with week 0. Serum HDL-C level significantly increased up to 16% and 12% in the policosanol 10 mg (p = 0.002) and 20 mg (p = 0.035) group, respectively. The study results suggest that long-term policosanol consumption simultaneously reduces peripheral BP as well as aortic BP accompanied by elevation of HDL-C and % HDL-C in TC in a dose-dependent manner.
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Affiliation(s)
- Suk-Jeong Kim
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea.,Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea.,LipoLab, Yeungnam University, Gyeongsan, South Korea
| | - Dhananjay Yadav
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea.,Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea.,LipoLab, Yeungnam University, Gyeongsan, South Korea
| | - Hye-Jeong Park
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Smart-Aging Convergence Research Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Kyung-Hyun Cho
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea.,Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea.,LipoLab, Yeungnam University, Gyeongsan, South Korea
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31
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Han SA, Kim TH, Kim SK, Lee KH, Park HJ, Lee JH, Kim SW. Point-Defect-Passivated MoS 2 Nanosheet-Based High Performance Piezoelectric Nanogenerator. Adv Mater 2018; 30:e1800342. [PMID: 29603416 DOI: 10.1002/adma.201800342] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/06/2018] [Indexed: 05/23/2023]
Abstract
In this work, a sulfur (S) vacancy passivated monolayer MoS2 piezoelectric nanogenerator (PNG) is demonstrated, and its properties before and after S treatment are compared to investigate the effect of passivating S vacancy. The S vacancies are effectively passivated by using the S treatment process on the pristine MoS2 surface. The S vacancy site has a tendency to covalently bond with S functional groups; therefore, by capturing free electrons, a S atom will form a chemisorbed bond with the S vacancy site of MoS2 . S treatment reduces the charge-carrier density of the monolayer MoS2 surface, thus the screening effect of piezoelectric polarization charges by free carrier is significantly prevented. As a result, the output peak current and voltage of the S-treated monolayer MoS2 nanosheet PNG are increased by more than 3 times (100 pA) and 2 times (22 mV), respectively. Further, the S treatment increases the maximum power by almost 10 times. The results suggest that S treatment can reduce free-charge carrier by sulfur S passivation and efficiently prevent the screening effect. Thus, the piezoelectric output peaks of current, voltage, and maximum power are dramatically increased, as compared with the pristine MoS2 .
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Affiliation(s)
- Sang A Han
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Tae-Ho Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Sung Kyun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Kang Hyuck Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Hye-Jeong Park
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Ju-Hyuck Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
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Choi HJ, Park EJ, Jang HJ, Park HJ, Kwon TH. FP011SORTING NEXIN 27 REGULATES THE LYSOSOMAL DEGRADATION OF AQP2 PROTEIN IN KIDNEY COLLECTING DUCT. Nephrol Dial Transplant 2018. [DOI: 10.1093/ndt/gfy104.fp011] [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: 11/14/2022] Open
Affiliation(s)
- Hyo-Jung Choi
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Eui-Jung Park
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Hyo-Ju Jang
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Hye-Jeong Park
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Tae-Hwan Kwon
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
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33
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Han SA, Kim TH, Kim SK, Lee KH, Park HJ, Lee JH, Kim SW. Point-Defect-Passivated MoS 2 Nanosheet-Based High Performance Piezoelectric Nanogenerator. Adv Mater 2018; 30:e1800342. [PMID: 29603416 DOI: 10.1002/adma.201870143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/06/2018] [Indexed: 05/27/2023]
Abstract
In this work, a sulfur (S) vacancy passivated monolayer MoS2 piezoelectric nanogenerator (PNG) is demonstrated, and its properties before and after S treatment are compared to investigate the effect of passivating S vacancy. The S vacancies are effectively passivated by using the S treatment process on the pristine MoS2 surface. The S vacancy site has a tendency to covalently bond with S functional groups; therefore, by capturing free electrons, a S atom will form a chemisorbed bond with the S vacancy site of MoS2 . S treatment reduces the charge-carrier density of the monolayer MoS2 surface, thus the screening effect of piezoelectric polarization charges by free carrier is significantly prevented. As a result, the output peak current and voltage of the S-treated monolayer MoS2 nanosheet PNG are increased by more than 3 times (100 pA) and 2 times (22 mV), respectively. Further, the S treatment increases the maximum power by almost 10 times. The results suggest that S treatment can reduce free-charge carrier by sulfur S passivation and efficiently prevent the screening effect. Thus, the piezoelectric output peaks of current, voltage, and maximum power are dramatically increased, as compared with the pristine MoS2 .
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Affiliation(s)
- Sang A Han
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Tae-Ho Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Sung Kyun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Kang Hyuck Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Hye-Jeong Park
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Ju-Hyuck Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, Republic of Korea
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Park HJ, Cho JI, Jang HJ, Park EJ, Choi HJ, Kwon TH. FP209CONSTRUCTION OF GENOME-ENGINEERED MESENCHYMAL STEM CELLS SECRETING ANGIOGENIC OR ANTI-INFLAMMATORY FACTORS FOR THE TREATMENT OF ACUTE KIDNEY INJURY. Nephrol Dial Transplant 2018. [DOI: 10.1093/ndt/gfy104.fp209] [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: 11/14/2022] Open
Affiliation(s)
- Hye-Jeong Park
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Jeong-In Cho
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Hyo-Ju Jang
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Eui-Jung Park
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Hyo-Jung Choi
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
| | - Tae-Hwan Kwon
- Dept of Biochem and Cell Biol, Sch Med, Kyungpook National Univ, Taegu, Korea, Republic of
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Park HJ, Yuk CM, Shin K, Lee SH. Interleukin-17A negatively regulates lymphangiogenesis in T helper 17 cell-mediated inflammation. Mucosal Immunol 2018; 11:590-600. [PMID: 28930285 DOI: 10.1038/mi.2017.76] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 07/20/2017] [Indexed: 02/07/2023]
Abstract
During inflammation lymphatic vessels (LVs) are enlarged and their density is increased to facilitate the migration of activated immune cells and antigens. However, after antigen clearance, the expanded LVs shrink to maintain homeostasis. Here we show that interleukin (IL)-17A, secreted from T helper type 17 (TH17) cells, is a negative regulator of lymphangiogenesis during the resolution phase of TH17-mediated immune responses. Moreover, IL-17A suppresses the expression of major lymphatic markers in lymphatic endothelial cells and decreases in vitro LV formation. To investigate the role of IL-17A in vivo, we utilized a cholera toxin-mediated inflammation model and identified inflammation and resolution phases based on the numbers of recruited immune cells. IL-17A, markedly produced by TH17 cells even after the peak of inflammation, was found to participate in the negative regulation of LV formation. Moreover, blockade of IL-17A resulted in not only increased density of LVs in tissues but also their enhanced function. Taken together, these findings improve the current understanding of the relationship between LVs and inflammatory cytokines in pathologic conditions.
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Affiliation(s)
- H J Park
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - C M Yuk
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - K Shin
- Graduate School of Medical Science and Engineering, Biomedical Research Center, Korea Advanced Institute of Science and Technology, Daejeon, Korea.,Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
| | - S-H Lee
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology, Daejeon, Korea.,Graduate School of Medical Science and Engineering, Biomedical Research Center, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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36
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Lee H, Sohn YM, Ko JY, Lee SY, Jhun BW, Park HY, Jeon K, Kim DH, Kim SY, Choi JE, Moon IJ, Shin SJ, Park HJ, Koh WJ. Once-daily dosing of amikacin for treatment of Mycobacterium abscessus lung disease. Int J Tuberc Lung Dis 2018. [PMID: 28633708 DOI: 10.5588/ijtld.16.0791] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Tertiary referral centre, Samsung Medical Center, South Korea. OBJECTIVE To evaluate the pharmacokinetic parameters and toxicities of once-daily amikacin (AMK) dosing for lung disease due to Mycobacterium abscessus. DESIGN A retrospective review of 48 patients with M. abscessus lung disease who received once-daily AMK for 4 weeks between January 2012 and June 2015. RESULTS With a starting dose of 15 mg/kg/day and adjustment of AMK dose according to the peak serum level (Cmax), the Cmax target of 55-65 μg/ml was achieved in 31.3% (15/48) of patients in the first week, 68.8% (33/48) in week 2, 91.7% (44/48) in week 3 and 95.8% (46/48) in week 4. Transient nephrotoxicity developed in 6.3% (3/48) of patients and ototoxicity in 25.0% (6/24), which was determined by audiogram as hearing loss, asymptomatic in five patients and tinnitus in one. Multivariate analysis revealed that the highest drug concentration 12 h after administration was significantly associated with the development of toxicities (adjusted odds ratio 1.862, P = 0.047). CONCLUSION Our results suggest that once-daily AMK for 4 weeks with a target Cmax of 55-65 μg/ml can be used in patients with M. abscessus lung disease, with careful monitoring of toxicity.
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Affiliation(s)
- H Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Y M Sohn
- Department of Pharmaceutical Services
| | - J Y Ko
- Department of Pharmaceutical Services
| | - S-Y Lee
- Department of Laboratory Medicine and Genetics
| | - B W Jhun
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - H Y Park
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - K Jeon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - D H Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - S-Y Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - J E Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - I J Moon
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - S J Shin
- Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea
| | - H J Park
- Department of Pharmaceutical Services
| | - W-J Koh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
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Hwang CJ, Chung SS, Lee KY, Lee JH, Moon SH, Kim JH, Cho KJ, Ahn JS, Kim DS, Park YS, Park HJ. Analgesic Efficacy and Safety of Prolonged-Release Oxycodone/Naloxone in Korean Patients with Chronic Pain from Spinal Disorders. Clin Orthop Surg 2018; 10:33-40. [PMID: 29564045 PMCID: PMC5851852 DOI: 10.4055/cios.2018.10.1.33] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 11/07/2017] [Indexed: 11/16/2022] Open
Abstract
Background A prolonged-release formulation of oxycodone/naloxone has been shown to be effective in European populations for the management of chronic moderate to severe pain. However, no clinical data exist for its use in Korean patients. The objective of this study was to assess efficacy and safety of prolonged-release oxycodone/naloxone in Korean patients for management of chronic moderate-to-severe pain. Methods In this multicenter, single-arm, open-label, phase IV study, Korean adults with moderate-to-severe spinal disorder-related pain that was not satisfactorily controlled with weak opioids and nonsteroidal anti-inflammatory drugs received prolonged-release oral oxycodone/naloxone at a starting dose of 10/5 mg/day (maximum 80/40 mg/day) for 8 weeks. Changes in pain intensity and quality of life (QoL) were measured using a numeric rating scale (NRS, 0–10) and the Korean-language EuroQol-five dimensions questionnaire, respectively. Results Among 209 patients assessed for efficacy, the mean NRS pain score was reduced by 25.9% between baseline and week 8 of treatment (p < 0.0001). There was also a significant improvement in QoL from baseline to week 8 (p < 0.0001). The incidence of adverse drug reactions was 27.7%, the most common being nausea, constipation, and dizziness; 77.9% of these adverse drug reactions had resolved or were resolving at the end of the study. Conclusions Prolonged-release oxycodone/naloxone provided significant and clinically relevant reductions in pain intensity and improved QoL in Korean patients with chronic spinal disorders. (ClinicalTrials.gov identifier: NCT01811238)
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Affiliation(s)
- Chang Ju Hwang
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung Soo Chung
- Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyu-Yeol Lee
- Department of Orthopaedic Surgery, Dong-A University Hospital, Busan, Korea
| | - Jae Hyup Lee
- Department of Orthopaedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Hwan Moon
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Jin-Hyok Kim
- Department of Orthopedic Surgery, Seoul Spine Institute, Inje University Sanggye Paik Hospital, Seoul, Korea
| | - Kyu-Jung Cho
- Department of Orthopaedic Surgery, Inha University Hospital, Incheon, Korea
| | - Jae-Sung Ahn
- Department of Orthopaedic Surgery, Chungnam National University Hospital, Daejeon, Korea
| | - Dong-Soo Kim
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Cheongju, Korea
| | - Ye-Soo Park
- Department of Orthopaedic Surgery, Guri Hospital, Hanyang University College of Medicine, Guri, Korea
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Kim HR, Kang HN, Shim HS, Kim EY, Kim J, Kim DJ, Lee JG, Lee CY, Hong MH, Kim SM, Kim H, Pyo KH, Yun MR, Park HJ, Han JY, Youn HA, Ahn MJ, Paik S, Kim TM, Cho BC. Co-clinical trials demonstrate predictive biomarkers for dovitinib, an FGFR inhibitor, in lung squamous cell carcinoma. Ann Oncol 2018; 28:1250-1259. [PMID: 28460066 DOI: 10.1093/annonc/mdx098] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background We conducted co-clinical trials in patient-derived xenograft (PDX) models to identify predictive biomarkers for the multikinase inhibitor dovitinib in lung squamous cell carcinoma (LSCC). Methods The PDX01-02 were established from LSCC patients enrolled in the phase II trial of dovitinib (NCT01861197) and PDX03-05 were established from LSCC patients receiving surgery. These five PDX tumors were subjected to in vivo test of dovitinib efficacy, whole exome sequencing and gene expression profiling. Results The PDX tumors recapitulate histopathological properties and maintain genomic characteristics of originating tumors. Concordant with clinical outcomes of the trial enrolled-LSCC patients, dovitinib produced substantial tumor regression in PDX-01 and PDX-05, whereas it resulted in tumor progression in PDX-02. PDX-03 and -04 also displayed poor antitumor efficacy to dovitinib. Mutational and genome-wide copy number profiles revealed no correlation between genomic alterations of FGFR1-3 and sensitivity to dovitinib. Of note, gene expression profiles revealed differentially expressed genes including FGF3 and FGF19 between PDX-01 and 05 and PDX-02-04. Pathway analysis identified two FGFR signaling-related gene sets, FGFR ligand binding/activation and SHC-mediated cascade pathway were substantially up-regulated in PDX-01 and 05, compared with PDX-02-04. The comparison of gene expression profiles between dovitinib-sensitive versus -resistant lung cancer cell lines in the Cancer Cell Line Encyclopedia database also found that transcriptional activation of 18 key signaling components in FGFR pathways can predict the sensitivity to dovitinib both in cell lines and PDX tumors. These results highlight FGFR pathway activation as a key molecular determinant for sensitivity to dovitinib. Conclusions FGFR gene expression signatures are predictors for the response to dovitinib in LSCC.
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Affiliation(s)
- H R Kim
- Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - H N Kang
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | | | - E Y Kim
- Pulmonology, Yonsei University College of Medicine, Seoul
| | - J Kim
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul
| | - D J Kim
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul
| | - J G Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul
| | - C Y Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul
| | - M H Hong
- Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - S-M Kim
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - H Kim
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - K-H Pyo
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - M R Yun
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - H J Park
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - J Y Han
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - H A Youn
- JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
| | - M-J Ahn
- Division of Hematology & Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S Paik
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul
| | - T-M Kim
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - B C Cho
- Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul.,JE-UK Institute for Cancer Research, JEUK Co, Ltd, Gumi-City, Kyungbuk
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Kim HA, Lee HS, Shin TH, Jung JY, Baek WY, Park HJ, Lee G, Paik MJ, Suh CH. Polyamine patterns in plasma of patients with systemic lupus erythematosus and fever. Lupus 2018; 27:930-938. [PMID: 29308729 DOI: 10.1177/0961203317751860] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease with various clinical manifestations and serologic markers. In this study, we analyzed nine polyamine (PA) profiles of plasma from patients with SLE and healthy controls (HCs), and the relationship between the PA profiles and disease activity. PA alterations in plasma of 44 patients with SLE and fever were investigated using gas chromatography mass spectrometry (GC-MS) in selected ion monitoring mode using N-ethoxycarbonyl/ N-pentafluoropropionyl derivatives, and compared with those of 43 HCs. Patients with SLE and HCs showed differences in five of nine PA profiles. Among five changed PA levels, four PAs, namely N1-acetylcadaverine, spermidine, N1-acetylspermidine, and spermine, were dramatically decreased. However, the level of cadaverine was increased in patients with SLE. In the partial correlation with PA profiles and disease activity markers of SLE, several disease activity markers and nutritional markers were correlated with cadaverine, spermidine, and N 8-acetylspermidine. Thus, our results provide a comprehensive understanding of the relationship between PA metabolomics and disease activity markers in patients with SLE.
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Affiliation(s)
- H A Kim
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - H S Lee
- 2 College of Pharmacy, 65380 Sunchon National University , Suncheon, Republic of Korea
| | - T H Shin
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J Y Jung
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - W Y Baek
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - H J Park
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - G Lee
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - M J Paik
- 2 College of Pharmacy, 65380 Sunchon National University , Suncheon, Republic of Korea
| | - C H Suh
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
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Kim BS, Jin JY, Kwon JH, Woo IS, Ko YH, Park SY, Park HJ, Kang JH. Efficacy and safety of oxycodone/naloxone as add-on therapy to gabapentin or pregabalin for the management of chemotherapy-induced peripheral neuropathy in Korea. Asia Pac J Clin Oncol 2017; 14:e448-e454. [PMID: 29280313 DOI: 10.1111/ajco.12822] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 09/28/2017] [Indexed: 12/12/2022]
Abstract
AIMS To investigate the efficacy and safety of oxycodone/naloxone in patients with chemotherapy-induced peripheral neuropathy (CIPN) inadequately controlled with pregabalin or gabapentin. METHODS This 4-week, multicenter, interventional, single-arm phase IV study included 72 Korean patients with CIPN inadequately controlled with pregabalin or gabapentin (Numeric Rating Scale 0-10; NRS ≥4 at baseline). In addition to pregabalin or gabapentin at existing doses, patients received 20/10 mg/day oxycodone/naloxone (up-titrated to 80/40 mg/day as needed). The primary endpoint was change in NRS score after 4 weeks. Secondary endpoints included Functional Assessment of Cancer Therapy/Gynecologic Oncology Group-Neurotoxicity (FACT/GOG-NTX) scores and safety assessments. RESULTS The mean ± standard deviation (SD) dose of oxycodone/naloxone was 23.3 ± 7.5 mg/day. At week 4, NRS score reduction was 1.29 ± 1.84 points (21.4% reduction; P < 0.0001). Patients on taxane-based chemotherapy experienced a significantly smaller mean change in NRS score at week 4 compared to patients on other chemotherapy (-0.63 ± 1.54 [n = 30] vs. -1.83 ± 1.00 [n = 36]; P = 0.0072). Although there were no significant changes in FACT/GOG-NTX total scores, improvements were observed in the neurotoxicity subscale measuring numbness/tingling of hands (mean ± SD change: -0.27 ± 1.04; P = 0.0427) and feet (-0.60 ± 1.09; P < 0.0001). Forty-two (58.3%) patients reported adverse events. There were no clinically significant changes in laboratory tests or vital signs. CONCLUSION Oxycodone/naloxone added to pregabalin or gabapentin provided additional pain relief and symptom control in Korean patients with CIPN, without clinically significant safety concerns.
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Affiliation(s)
- Bong-Seog Kim
- Division of Hemato-Oncology, VHS Medical Center, Seoul, South Korea
| | - Jong-Youl Jin
- Division of Hemato-Oncology, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, South Korea
| | - Jung Hye Kwon
- Division of Hemato-Oncology, Kangdong Sacred Heart Hospital, Hallym University, Seoul, South Korea
| | - In Sook Woo
- Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Yoon Ho Ko
- Division of Oncology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, South Korea
| | - Suk-Young Park
- Division of Oncology, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, South Korea
| | - Hye-Jeong Park
- Medical Affairs, Mundipharma Korea Ltd., Seoul, South Korea
| | - Jin Hyung Kang
- Division of Medical Oncology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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Yang SY, Kim YH, Byun MK, Kim HJ, Ahn CM, Kim SH, Lee HS, Park HJ. Repeated Measurement of Fractional Exhaled Nitric Oxide Is Not Essential for Asthma Screening. J Investig Allergol Clin Immunol 2017; 28:98-105. [PMID: 29180311 DOI: 10.18176/jiaci.0215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND AND OBJETIVE Older guidelines recommend that fractional exhaled nitric oxide (FeNO) should be checked more than twice during the same session to confirm an asthma diagnosis. Recent studies show the excellent reproducibility of FeNO measurements. Objetive: We aimed to determine whether repeated FeNO measurements during the same session are necessary for asthma screening. MATERIAL AND METHODS We retrospectively reviewed the electronic medical records of adult outpatients who visited the respiratory medicine department for diagnosis of asthma and assessed FeNO measurements obtained from June 2016 to July 2017. RESULTS Of the 132 patients enrolled, 79 (59.8%) were diagnosed with asthma. Repeated FeNO measurements taken during the same session showed high reproducibility (intraclass correlation coefficient >0.9; P<.001) and a strong correlation (Pearson coefficient >0.9; P<.001), although reproducibility and correlation were slightly weaker in patients with low FeNO values. The value of repeated measurement was not significant; however, the second FeNO measurement was significantly higher than the first measurement in patients with the worst and best lung function. The predictive power of the first measurement of FeNO (sensitivity, 80.5%; specificity, 85.1%) was not inferior to the second (sensitivity, 76.6%; specificity 85.1%). The same was true of the geometric mean of the two. CONCLUSIONS Repeated FeNO measurement during the same session is not essential for asthma screening in cases where the first acceptable FeNO measurement is performed using the proper method.
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Affiliation(s)
- S Y Yang
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - Y H Kim
- Department of Pediatrics, Gangnam Severance Hospital, Seoul, Korea
| | - M K Byun
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - H J Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - C M Ahn
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - S H Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
| | - H S Lee
- Biostatistics Collaboration Unit, Seoul, Korea
| | - H J Park
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea.,Department of Internal Medicine, Yong-in Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Son M, Oh S, Park H, Ahn H, Choi J, Kim H, Lee HS, Lee S, Park HJ, Kim SU, Lee B, Byun K. Protection against RAGE-mediated neuronal cell death by sRAGE-secreting human mesenchymal stem cells in 5xFAD transgenic mouse model. Brain Behav Immun 2017; 66:347-358. [PMID: 28760504 DOI: 10.1016/j.bbi.2017.07.158] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 10/19/2022] Open
Abstract
Alzheimer's disease (AD), which is the most commonly encountered neurodegenerative disease, causes synaptic dysfunction and neuronal loss due to various pathological processes that include tau abnormality and amyloid beta (Aβ) accumulation. Aβ stimulates the secretion and the synthesis of Receptor for Advanced Glycation End products (RAGE) ligand by activating microglial cells, and has been reported to cause neuronal cell death in Aβ1-42 treated rats and in mice with neurotoxin-induced Parkinson's disease. The soluble form of RAGE (sRAGE) is known to reduce inflammation, and to decrease microglial cell activation and Aβ deposition, and thus, it protects from neuronal cell death in AD. However, sRAGE protein has too a short half-life for therapeutic purposes. We developed sRAGE-secreting umbilical cord derived mesenchymal stem cells (sRAGE-MSCs) to enhance the inhibitory effects of sRAGE on Aβ deposition and to reduce the secretion and synthesis of RAGE ligands in 5xFAD mice. In addition, these cells improved the viability of injected MSCs, and enhanced the protective effects of sRAGE by inhibiting the binding of RAGE and RAGE ligands in 5xFAD mice. These findings suggest sRAGE protein from sRAGE-MSCs has better protection against neuronal cell death than sRAGE protein or single MSC treatment by inhibiting the RAGE cell death cascade and RAGE-induce inflammation.
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Affiliation(s)
- Myeongjoo Son
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Seyeon Oh
- Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hyunjin Park
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hyosang Ahn
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Junwon Choi
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hyungho Kim
- Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hye Sun Lee
- Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Sojung Lee
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea
| | - Hye-Jeong Park
- Department of Biochemistry and Cell Biology, Kyungpook National University, Daegu, Republic of Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Seung U Kim
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Bonghee Lee
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Center for Regenerative Medicine, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea.
| | - Kyunghee Byun
- Department of Anatomy and Cell Biology, Gachon University Graduate School of Medicine, Incheon, Republic of Korea; Functional Cellular Networks Laboratory, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea.
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Park EJ, Jung HJ, Choi HJ, Cho JI, Park HJ, Kwon TH. miR-34c-5p and CaMKII are involved in aldosterone-induced fibrosis in kidney collecting duct cells. Am J Physiol Renal Physiol 2017; 314:F329-F342. [PMID: 29070573 DOI: 10.1152/ajprenal.00358.2017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 12/13/2022] Open
Abstract
Mineralocorticoids trigger a profibrotic process in the kidney. In mouse cortical collecting duct cells, the present study addressed two main questions: 1) what are microRNAs (miRNAs) and their target genes that are changed by aldosterone? and 2) what do miRNAs, in response to aldosterone, regulate regarding signaling pathways related to fibrosis? A microarray chip assay was done in cells in the absence or presence of aldosterone treatment (10-6 M; 3 days). The candidate miRNAs were identified by the criteria of >30% of fold change among the significantly changed miRNAs ( P < 0.05). Twenty-nine miRNAs were upregulated (>1.3-fold), and 27 miRNAs were downregulated (<0.7-fold). Putative target genes of identified miRNAs were associated with 74 Kyoto Encyclopedia of Genes and Genomes pathways. Among them, the wingless-related integration site (Wnt) signaling pathway was highly ranked, where 15 mature miRNAs were observed. These miRNAs were further analyzed by real-time quantitative PCR, and among them, miR-130b-3p, miR-34c-5p, and miR-146a-5p were selected. Through the identification of putative target genes of these three miRNAs, mRNA and protein expression of the Ca2+/calmodulin-dependent protein kinase type II β-chain ( Camk2b) gene (a target gene of miR-34c-5p) were found to be increased significantly in aldosterone-treated cells, where fibronectin (FN) and α-smooth muscle actin were induced. When CaMKIIβ small interfering RNA or the miR-34c-5p mimic was transfected, aldosterone-induced FN expression was significantly attenuated, along with reduced CaMKIIβ protein expression. A luciferase reporter assay revealed a decrease of CaMKIIβ translation in cells transfected with miRNA mimics of miR-34c-5p. In conclusion, aldosterone-induced downregulation of miR-34c-5p in the Wnt signaling pathway and a consequent increase of CaMKIIβ expression are likely to be involved in aldosterone-induced fibrosis.
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Affiliation(s)
- Eui-Jung Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hyun Jun Jung
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,Epithelial Systems Biology Laboratory, Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland
| | - Hyo-Jung Choi
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Jeong-In Cho
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Hye-Jeong Park
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
| | - Tae-Hwan Kwon
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Taegu, Korea.,BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine, Kyungpook National University, Taegu, Korea
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Park HJ, Kang HK, Wang M, Jo J, Chung E, Kim S. A pilot study of planar coil based magnetic stimulation using acute hippocampal slice in mice. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2017:1118-1121. [PMID: 29060071 DOI: 10.1109/embc.2017.8037025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Micromagnetic stimulation using small-sized implantable coils has recently been studied. The main advantage of this method is that it can provide sustainable stimulation performance even if a fibrotic encapsulation layer is formed around the implanted coil by inflammation response, because indirectly induced currents are used to induce neural responses. In previous research, we optimized the geometrical and control parameters used in implantable magnetic stimulation. Based on those results, we fabricated the planar coil and studied the LTP effect in the hippocampal slice by two different magnetic stimulation protocols using the quadripulse stimulation (QPS) pattern. We found that direct magnetic stimulation (DMS) induced insignificant LTP effect and priming magnetic stimulation (PMS) occluded LTP effect after tetanic stimulation, when QPS patterned magnetic stimulation with 1 A current pulse was applied to the planar coil.
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Park HJ, Lee SY, Choi SH, Hong HP, Choi YJ, Kim MS. Reduced metallic artefacts in 3 T knee MRI using fast spin-echo multi-point Dixon compared to fast spin-echo T2-weighted sequences. Clin Radiol 2017; 72:996.e1-996.e6. [PMID: 28807564 DOI: 10.1016/j.crad.2017.07.012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/18/2017] [Accepted: 07/06/2017] [Indexed: 10/19/2022]
Abstract
AIM To compare multi-point Dixon magnetic resonance imaging (MRI) and fast spin-echo (FSE) T2-weighted imaging (WI) with regard to the size of metallic artefacts when imaging the knee joint. MATERIALS AND METHODS A total of 42 patients who underwent anterior cruciate ligament (ACL) reconstruction and follow-up imaging with 3 T MRI using the multi-point Dixon technique was included in this retrospective study. The maximal distance of the image distortion area around the metallic artefact was measured (interference screw of femoral tunnel area) on sagittal images of both FSE T2WI (T2WI and fat-suppressed [FS] T2WI) and multi-point Dixon (water only image and in-phase image) sequences. The maximal distance of the image distortion were compared using paired t-tests across the image sequences (multi-point Dixon water only image versus FS T2WI and multi-point Dixon in-phase image versus T2WI). RESULTS The mean distance of the image distortion from metallic artefacts regardless of the image sequence ranged from 16.6 mm to 24.5 mm (Table 2). The mean distances measured by two readers on multi-point Dixon (water only image) sequences were significantly shorter than those in FS T2WI sequences (p<0.001). In contrast, the mean distances measured by two readers on multi-point Dixon (in-phase image) sequences did not differ from those of T2WI (p>0.05) sequences. CONCLUSION The water-only image of multi-point Dixon technique reduces the amount of metallic artefacts compared to that in FS FSE T2WI sequences; however, the metallic artefacts were not significantly different between in-phase images of multi-point Dixon and FSE T2WI.
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Affiliation(s)
- H J Park
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Y Lee
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Choi
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H P Hong
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y J Choi
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - M S Kim
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Park MS, Kim SK, Park HJ, Seok H, Kang SW, Lee SH, Kim YG, Moon JY, Kim TH, Kim YH, Kang SW, Chung JH, Jeong KH. Association Studies of Bone Morphogenetic Protein 2 Gene Polymorphisms With Acute Rejection in Kidney Transplantation Recipients. Transplant Proc 2017; 49:1012-1017. [PMID: 28583517 DOI: 10.1016/j.transproceed.2017.03.019] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Bone morphogenetic proteins (BMP) belong to the transforming growth factor beta superfamily of proteins. This study was performed to evaluate the association of BMP gene polymorphisms with acute renal allograft rejection (AR) and graft dysfunction (GD) in Koreans. METHODS Three hundred thirty-one patients who had kidney transplantation procedures were recruited. Transplantation outcomes were determined in terms of AR and GD criteria. We selected six single nucleotide polymorphisms (SNPs): rs1979855 (5' near gene), rs1049007 (Ser87Ser), rs235767 (intron), rs1005464 (intron), rs235768 (Arg190Ser), and rs3178250 (3; untranslated region). RESULTS Among the six SNPs tested, the rs235767, rs1005464, and rs3178250 SNPs were significantly associated with AR (P < .05). The rs1049007 and rs235768 SNPs also showed an association with GD (P < .05). CONCLUSIONS In conclusion, these results suggest that the BMP2 gene polymorphism may be related to the development of AR and GD in kidney transplant recipients.
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Affiliation(s)
- M-S Park
- Department of Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S K Kim
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H J Park
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - H Seok
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S W Kang
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - S H Lee
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y G Kim
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J Y Moon
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - T H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - Y H Kim
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - S W Kang
- Department of Nephrology, School of Medicine, In Je University, Busan, Republic of Korea
| | - J-H Chung
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
| | - K H Jeong
- Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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47
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Sohn CH, Kim CH, Sandilands LJ, Hien NTM, Kim SY, Park HJ, Kim KW, Moon SJ, Yamaura J, Hiroi Z, Noh TW. Strong Spin-Phonon Coupling Mediated by Single Ion Anisotropy in the All-In-All-Out Pyrochlore Magnet Cd_{2}Os_{2}O_{7}. Phys Rev Lett 2017; 118:117201. [PMID: 28368646 DOI: 10.1103/physrevlett.118.117201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Indexed: 06/07/2023]
Abstract
Spin-phonon coupling mediated by single ion anisotropy was investigated using optical spectroscopy and first-principles calculations in the all-in-all-out pyrochlore magnet Cd_{2}Os_{2}O_{7}. Clear anomalies were observed in both the phonon frequencies and linewidths at the magnetic ordering temperature. The renormalization of the phonon modes was exceptionally large, signifying the presence of an unconventional magnetoelastic term from large spin-orbit coupling. In addition, the relative phonon frequency shifts show a strong correlation with the modulation of noncubic crystal field by the corresponding lattice distortion. Our observation establishes a new type of spin-phonon coupling through single ion anisotropy, a second-order spin-orbit coupling term, in Cd_{2}Os_{2}O_{7}.
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Affiliation(s)
- C H Sohn
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - C H Kim
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - L J Sandilands
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - N T M Hien
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - S Y Kim
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - H J Park
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
| | - K W Kim
- Department of Physics, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - S J Moon
- Department of Physics, Hanyang University, Seoul 133-791, Republic of Korea
| | - J Yamaura
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Kanagawa 226-8503, Japan
| | - Z Hiroi
- ISSP, University of Tokyo, Kashiwa 277-8581, Japan
| | - T W Noh
- Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul 151-742, Republic of Korea
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48
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Jin SM, Shim W, Oh BJ, Oh SH, Yu SJ, Choi JM, Park HJ, Park JB, Kim JH. Anakinra Protects Against Serum Deprivation-Induced Inflammation and Functional Derangement in Islets Isolated From Nonhuman Primates. Am J Transplant 2017; 17:365-376. [PMID: 27376767 DOI: 10.1111/ajt.13953] [Citation(s) in RCA: 7] [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: 01/17/2016] [Revised: 06/09/2016] [Accepted: 06/25/2016] [Indexed: 01/25/2023]
Abstract
We investigated whether serum deprivation induces islet amyloid polypeptide (IAPP) oligomer accumulation and/or a proinflammatory response and, if so, whether the addition of interleukin (IL)-1 receptor antagonist to the culture medium can relieve the proinflammatory response during serum-deprived culture of nonhuman primate (NHP) islets. After culture in medium with and without Ana under serum-deprived culture conditions, IAPP oligomer/amyloid accumulation, in vitro viability, islet function, cytokine secretion, and posttransplantation outcome in streptozotocin-induced diabetic nude mice were determined in islets isolated from heterozygote human IAPP transgenic (hIAPP+/- ) mice and/or NHP islets. Serum deprivation induced accumulation of IAPP oligomer, but not amyloid, in NHP islets. Anakinra (Ana) protected islets from the serum deprivation-induced impairment of in vitro viability and glucose-stimulated insulin secretion and attenuated serum deprivation-induced caspase-1 activation, transcription, and secretion of IL-1β, IL-6, and tumor necrosis factor-α in hIAPP+/- mice and NHP islets. Supplementation of medium with Ana during serum-deprived culture also improved posttransplantation in vivo outcomes of NHP islets. In conclusion, serum deprivation induced accumulation of IAPP oligomers and proinflammatory responses in cultured isolated islets. Supplementation of the culture medium with Ana attenuated the functional impairment and proinflammatory responses induced by serum deprivation in ex vivo culture of NHP islets.
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Affiliation(s)
- S-M Jin
- Division of Endocrinology and Metabolism, Department of Medicine, Diabetes and Endocrinology Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - W Shim
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea.,Molecular Science and Technology Research Center, Ajou University, Suwon, Korea
| | - B J Oh
- Division of Endocrinology and Metabolism, Department of Medicine, Diabetes and Endocrinology Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - S-H Oh
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - S J Yu
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - J M Choi
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - H J Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J B Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J H Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Diabetes and Endocrinology Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, SAIHST (Samsung Advanced Institute for Health Sciences & Technology), Seoul, Korea
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49
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Kim JT, Hong SH, Park HJ, Kim YS, Suh JY, Lee JK, Park JM, Maity T, Eckert J, Kim KB. Deformation mechanisms to ameliorate the mechanical properties of novel TRIP/TWIP Co-Cr-Mo-(Cu) ultrafine eutectic alloys. Sci Rep 2017; 7:39959. [PMID: 28067248 PMCID: PMC5220307 DOI: 10.1038/srep39959] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 11/28/2016] [Indexed: 11/09/2022] Open
Abstract
In the present study, the microstructural evolution and the modulation of the mechanical properties have been investigated for a Co-Cr-Mo (CCM) ternary eutectic alloy by addition of a small amount of copper (0.5 and 1 at.%). The microstructural observations reveal a distinct dissimilarity in the eutectic structure such as a broken lamellar structure and a well-aligned lamellar structure and an increasing volume fraction of Co lamellae as increasing amount of copper addition. This microstructural evolution leads to improved plasticity from 1% to 10% without the typical tradeoff between the overall strength and compressive plasticity. Moreover, investigation of the fractured samples indicates that the CCMCu alloy exhibits higher plastic deformability and combinatorial mechanisms for improved plastic behavior. The improved plasticity of CCMCu alloys originates from several deformation mechanisms; i) slip, ii) deformation twinning, iii) strain-induced transformation and iv) shear banding. These results reveal that the mechanical properties of eutectic alloys in the Co-Cr-Mo system can be ameliorated by micro-alloying such as Cu addition.
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Affiliation(s)
- J T Kim
- Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neugdong-ro, Gwangjin-gu, Seoul 143-747, Republic of Korea
| | - S H Hong
- Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neugdong-ro, Gwangjin-gu, Seoul 143-747, Republic of Korea
| | - H J Park
- Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neugdong-ro, Gwangjin-gu, Seoul 143-747, Republic of Korea
| | - Y S Kim
- Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neugdong-ro, Gwangjin-gu, Seoul 143-747, Republic of Korea
| | - J Y Suh
- High Temperature Energy Materials Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seoungbuk-gu, Seoul 136-791, Republic of Korea
| | - J K Lee
- Division of Advanced Materials Engineering, Kongju National University, Cheonan 330-717, Republic of Korea
| | - J M Park
- Global Technology Center, Samsung Electronics Co., Ltd, 129 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-742, Republic of Korea
| | - T Maity
- Department Materials Physics, Montanuniversität Leoben, Jahnstraße 12, A-8700 Leoben, Austria
| | - J Eckert
- Department Materials Physics, Montanuniversität Leoben, Jahnstraße 12, A-8700 Leoben, Austria.,Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700 Leoben, Austria
| | - K B Kim
- Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neugdong-ro, Gwangjin-gu, Seoul 143-747, Republic of Korea
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50
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Lee KW, Park JB, Oh DK, Na BG, Choi JY, Cho WT, Lee SH, Park HJ, Cho D, Huh WS, Kim SJ. Short-Term Outcomes of ABO-Incompatible Living Donor Kidney Transplantation With Uniform Protocol: Significance of Baseline Anti-ABO Titer. Transplant Proc 2017; 48:820-6. [PMID: 27234744 DOI: 10.1016/j.transproceed.2016.01.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 01/21/2016] [Indexed: 02/06/2023]
Abstract
Antibody-mediated rejection (AMR) is one of the major causes of poor outcomes in ABO-incompatible kidney transplantation (ABOi KT). Studies investigating AMR risk factors found that anti-ABO titer is a major issue. However, the significance of antibody titer has been debated. This retrospective study analyzed AMR risk factors in 59 patients who underwent ABOi KT between August 2010 and January 2015. We also analyzed AMR risk factors in recipients with high anti-ABO baseline titers (≥1:64 on dithiothreitol at 37°C phase or ≥1:256 on antihuman globulin phase). The 2-year patient survival rate was 95.8%, and the 2-year graft survival rate was 94.9%. Nine patients (15.3%) experienced clinical (6 of 59 [10.2%]) or subclinical (3 of 59 [5.1%]) AMR. One patient experienced graft loss from hyperacute rejection. AMR risk factor analysis revealed that baseline antibody titer was associated with incidence of AMR. In patients with high baseline titers, low doses of rituximab (200-mg single-dose), an antibody against CD20, was predictive for AMR. Six patients who received pretransplant intravenous immunoglobulin did not experience AMR even when they had high baseline antibody titers. Our results indicate that a high baseline antibody titer affected the incidence of AMR. ABOi KT candidates with high baseline titers need to undergo an intensified preconditioning protocol, including high-dose rituximab (375 mg/m(2)) and intravenous immunoglobulin.
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Affiliation(s)
- K W Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J B Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - D K Oh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - B G Na
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J Y Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - W T Cho
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Lee
- Department of Surgery, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - H J Park
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D Cho
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - W S Huh
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S J Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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