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Pörtner HO, Scholes RJ, Arneth A, Barnes DKA, Burrows MT, Diamond SE, Duarte CM, Kiessling W, Leadley P, Managi S, McElwee P, Midgley G, Ngo HT, Obura D, Pascual U, Sankaran M, Shin YJ, Val AL. Overcoming the coupled climate and biodiversity crises and their societal impacts. Science 2023; 380:eabl4881. [PMID: 37079687 DOI: 10.1126/science.abl4881] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Earth's biodiversity and human societies face pollution, overconsumption of natural resources, urbanization, demographic shifts, social and economic inequalities, and habitat loss, many of which are exacerbated by climate change. Here, we review links among climate, biodiversity, and society and develop a roadmap toward sustainability. These include limiting warming to 1.5°C and effectively conserving and restoring functional ecosystems on 30 to 50% of land, freshwater, and ocean "scapes." We envision a mosaic of interconnected protected and shared spaces, including intensively used spaces, to strengthen self-sustaining biodiversity, the capacity of people and nature to adapt to and mitigate climate change, and nature's contributions to people. Fostering interlinked human, ecosystem, and planetary health for a livable future urgently requires bold implementation of transformative policy interventions through interconnected institutions, governance, and social systems from local to global levels.
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Affiliation(s)
- H-O Pörtner
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
- Department of Biology and Chemistry, University of Bremen, Bremen, Germany
| | - R J Scholes
- Global Change Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - A Arneth
- Atmospheric Environmental Research, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
| | - D K A Barnes
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
| | - M T Burrows
- Scottish Association for Marine Science, Oban, Argyll, UK
| | - S E Diamond
- Department of Biology, Case Western Reserve University, Cleveland, OH, USA
| | - C M Duarte
- Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Computational Bioscience Research Centre (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - W Kiessling
- Geozentrum Nordbayern, Friedrich-Alexander-Universität, Erlangen, Germany
| | - P Leadley
- Laboratoire d'Ecologie Systématique Evolution, Université Paris-Saclay, CNRS, AgroParisTech, 91400 Orsay, France
| | - S Managi
- Urban Institute, Kyushu University, Fukuoka, Japan
| | - P McElwee
- Department of Human Ecology, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - G Midgley
- Global Change Biology Group, Botany and Zoology Department, University of Stellenbosch, 7600 Stellenbosch, South Africa
| | - H T Ngo
- Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), Bonn, Germany
- Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, Italy
| | - D Obura
- Coastal Oceans Research and Development-Indian Ocean (CORDIO) East Africa, Mombasa, Kenya
- Global Climate Institute, University of Queensland, Brisbane, QLD 4072, Australia
| | - U Pascual
- Basque Centre for Climate Change (BC3), Leioa, Spain
- Basque Foundation for Science (Ikerbasque), Bilbao, Spain
- Centre for Development and Environment, University of Bern, Bern, Switzerland
| | - M Sankaran
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bellary Road, Bangalore, Karnataka, India
| | - Y J Shin
- Marine Biodiversity, Exploitation and Conservation (MARBEC), Institut de Recherche pour le Développement (IRD), Université Montpellier, Insititut Français de Recherche pour l'Exploitation de la Mer (IFREMER), CNRS, 34000 Montpellier, France
| | - A L Val
- Brazilian National Institute for Research of the Amazon, 69080-971 Manaus, Brazil
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Idzuchi H, Pientka F, Huang KF, Harada K, Gül Ö, Shin YJ, Nguyen LT, Jo NH, Shindo D, Cava RJ, Canfield PC, Kim P. Unconventional supercurrent phase in Ising superconductor Josephson junction with atomically thin magnetic insulator. Nat Commun 2021; 12:5332. [PMID: 34504077 PMCID: PMC8429564 DOI: 10.1038/s41467-021-25608-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/22/2021] [Indexed: 11/23/2022] Open
Abstract
In two-dimensional (2D) NbSe2 crystal, which lacks inversion symmetry, strong spin-orbit coupling aligns the spins of Cooper pairs to the orbital valleys, forming Ising Cooper pairs (ICPs). The unusual spin texture of ICPs can be further modulated by introducing magnetic exchange. Here, we report unconventional supercurrent phase in van der Waals heterostructure Josephson junctions (JJs) that couples NbSe2 ICPs across an atomically thin magnetic insulator (MI) Cr2Ge2Te6. By constructing a superconducting quantum interference device (SQUID), we measure the phase of the transferred Cooper pairs in the MI JJ. We demonstrate a doubly degenerate nontrivial JJ phase (ϕ), formed by momentum-conserving tunneling of ICPs across magnetic domains in the barrier. The doubly degenerate ground states in MI JJs provide a two-level quantum system that can be utilized as a new dissipationless component for superconducting quantum devices. Our work boosts the study of various superconducting states with spin-orbit coupling, opening up an avenue to designing new superconducting phase-controlled quantum electronic devices. Van der Waals structures provide a new platform to explore novel physics of superconductor/ferromagnet interfaces. Here, NbSe2 Josephson junction with Cr2Ge2Te6 enables non-trivial Josephson phase by spin-dependent interaction, boosting the study of superconducting states with spin-orbit coupling and phase-controlled quantum electronic device.
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Affiliation(s)
- H Idzuchi
- Department of Physics, Harvard University, Cambridge, MA, USA.,WPI Advanced Institute for Materials Research and Center for Science and Innovation in Spintronics, Tohoku University, Sendai, Japan
| | - F Pientka
- Department of Physics, Harvard University, Cambridge, MA, USA.,Institut für Theoretische Physik, Goethe-Universität, Frankfurt am Main, Germany
| | - K-F Huang
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - K Harada
- Center for Emergent Matter Science (CEMS), RIKEN, Hatoyama, Saitama, Japan
| | - Ö Gül
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - Y J Shin
- Department of Physics, Harvard University, Cambridge, MA, USA.,Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - L T Nguyen
- Department of Chemistry, Princeton University, Princeton, NJ, USA
| | - N H Jo
- Department of Physics and Astronomy, Iowa State University, Ames, IA, USA.,Ames Laboratory, Iowa State University, Ames, IA, USA
| | - D Shindo
- Center for Emergent Matter Science (CEMS), RIKEN, Hatoyama, Saitama, Japan
| | - R J Cava
- Department of Chemistry, Princeton University, Princeton, NJ, USA
| | - P C Canfield
- Department of Physics and Astronomy, Iowa State University, Ames, IA, USA.,Ames Laboratory, Iowa State University, Ames, IA, USA
| | - P Kim
- Department of Physics, Harvard University, Cambridge, MA, USA.
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3
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Shin YJ, Kim KA, Kim ES, Kim JH, Kim HS, Ha M, Bae ON. Identification of aldo-keto reductase (AKR7A1) and glutathione S-transferase pi (GSTP1) as novel renal damage biomarkers following exposure to mercury. Hum Exp Toxicol 2018; 37:1025-1036. [DOI: 10.1177/0960327117751234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The kidney is one of the main targets for toxicity induced by xenobiotics. Sensitive detection of early impairment is critical to assess chemical-associated renal toxicity. The aim of this study was to identify potential nephrotoxic biomarkers in rat kidney tissues after exposure to mercury (Hg), a representative nephrotoxicant, and to evaluate these new biomarkers employing in vivo and in vitro systems. Mercuric chloride was administered orally to Sprague-Dawley rats for 2 weeks. Proteomic analysis revealed that aldo-keto reductase (AKR7A1) and glutathione S-transferase pi (GSTP1) were significantly elevated in kidney after Hg exposure. While the levels of conventional nephrotoxic clinical markers including blood urea nitrogen and serum creatinine were not elevated, the mRNA and protein levels of AKR7A1 and GSTP1 were increased upon Hg exposure in a dose-dependent manner. The increases in AKR7A1 and GSTP1 were also observed in rat kidneys after an extended exposure for 6 weeks to low-dose Hg. In in vitro rat kidney proximal tubular cells, changes in AKR7A1 and GSTP1 levels correlated well with the extent of cytotoxicity induced by Hg, cadmium, or cisplatin. AKR7A1 and GSTP1 were identified as new candidates for Hg-induced nephrotoxicity, suggesting that these biomarkers have potential for evaluating or predicting nephrotoxicity.
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Affiliation(s)
- Y-J Shin
- College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - K-A Kim
- College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - E-S Kim
- College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - J-H Kim
- College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - H-S Kim
- College of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - M Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - O-N Bae
- College of Pharmacy Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
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Chang HY, Seo JH, Kwon JW, Suh DI, Cho HJ, Yoon J, Kim EJ, Lee JS, Shin YJ, Hong SJ. Independent association among suicidal ideation, asthma, and bronchial hyperresponsiveness in adolescents. Clin Exp Allergy 2017; 47:1671-1674. [PMID: 28985451 DOI: 10.1111/cea.13041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- H Y Chang
- Department of Psychiatry and Behavioral Sciences, Ajou University School of Medicine, Suwon, Korea.,Sunflower Center of Southern Gyeonggi for Women and Children Victims of Violence, Suwon, Korea
| | - J-H Seo
- Department of Pediatrics, Dangook University Hospital, Cheonan, Korea
| | - J-W Kwon
- Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea
| | - D I Suh
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - H-J Cho
- Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J Yoon
- Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - E-J Kim
- Division of Allergy and Chronic Respiratory Diseases, Center for Biomedical Sciences, Korean National Institute of Health, Korea Center for Diseases Control and Prevention, Osong, Korea
| | - J-S Lee
- Korean National Institute of Health, Korea Center for Diseases Control and Prevention, Osong, Korea
| | - Y-J Shin
- Department of Psychiatry and Behavioral Sciences, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S-J Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Jung SA, Lee DH, Moon JH, Hong SW, Shin JS, Hwang IY, Shin YJ, Kim JH, Gong EY, Kim SM, Lee EY, Lee S, Kim JE, Kim KP, Hong YS, Lee JS, Jin DH, Kim T, Lee WJ. Corrigendum to 'L-Ascorbic acid can abrogate SVCT-2-dependent cetuximab resistance mediated by mutant KRAS in human colon cancer cells': [Free Radic. Biol. Med. 95 (2016) 200-208]. Free Radic Biol Med 2016; 97:620. [PMID: 27476024 DOI: 10.1016/j.freeradbiomed.2016.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S A Jung
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - J H Moon
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S W Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - I Y Hwang
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y J Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J H Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Gong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S M Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J E Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - K P Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y S Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Jin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Department of Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - T Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - W J Lee
- Department of Anatomy and Tumor Immunity Medical Research Center, Seoul National University College of Medicine, Seoul 110-744, Republic of Korea
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Kim JE, Shin JS, Moon JH, Hong SW, Jung DJ, Kim JH, Hwang IY, Shin YJ, Gong EY, Lee DH, Kim SM, Lee EY, Kim YS, Kim D, Hur D, Kim TW, Kim KP, Jin DH, Lee WJ. Foxp3 is a key downstream regulator of p53-mediated cellular senescence. Oncogene 2016; 36:219-230. [DOI: 10.1038/onc.2016.193] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 04/18/2016] [Accepted: 04/26/2016] [Indexed: 11/09/2022]
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Choi JI, Lee HJ, Shin YJ, Lim HW, Lee HN. Rapid enlargement of endometrial stromal sarcoma after uterine fibroid embolization for presumed adenomyosis: a case report and literature review. EUR J GYNAECOL ONCOL 2016; 37:876-881. [PMID: 29943942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Uterine sarcomas have rarely been diagnosed after uterine artery embolization. It remains unclear whether the diagnostic work-up is required prior to such embolization to prevent a missed diagnosis of sarcomas and a delay in providing definitive treatment. Because of the rarity and heterogeneity of endometrial stromal neoplasms, little is known about their epidemiology, pathogenesis, and molecular pathology. The authors report a case of low-grade endometrial stromal sarcoma (ESS) diagnosed after uterine fibroid embolization. Although they performed laparoscopic biopsy of the rapidly growing uterine mass, they could not detect the ESS. Although rare, ESS should be considered in the differential diagnosis of uterine fibroid enlargement. It is essential to assess the risk of malignancy by taking into account the patient's clinical symptoms, results of the physical exam, and imaging findings prior to uterine artery embolization. Pathologic diagnosis should include an adequate biopsy sample and the use of molecular genetic testing.
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Shin YJ, Jeon BC, Yang SM, Hwang I, Cho MR, Sando D, Lee SR, Yoon JG, Noh TW. Suppression of creep-regime dynamics in epitaxial ferroelectric BiFeO3 films. Sci Rep 2015; 5:10485. [PMID: 26014521 PMCID: PMC4444839 DOI: 10.1038/srep10485] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 03/20/2015] [Accepted: 04/13/2015] [Indexed: 12/05/2022] Open
Abstract
Switching dynamics of ferroelectric materials are governed by the response of domain walls to applied electric field. In epitaxial ferroelectric films, thermally-activated ‘creep’ motion plays a significant role in domain wall dynamics, and accordingly, detailed understanding of the system’s switching properties requires that this creep motion be taken into account. Despite this importance, few studies have investigated creep motion in ferroelectric films under ac-driven force. Here, we explore ac hysteretic dynamics in epitaxial BiFeO3 thin films, through ferroelectric hysteresis measurements, and stroboscopic piezoresponse force microscopy. We reveal that identically-fabricated BiFeO3 films on SrRuO3 or La0.67Sr0.33MnO3 bottom electrodes exhibit markedly different switching behaviour, with BiFeO3/SrRuO3 presenting essentially creep-free dynamics. This unprecedented result arises from the distinctive spatial inhomogeneities of the internal fields, these being influenced by the bottom electrode’s surface morphology. Our findings further highlight the importance of controlling interface and defect characteristics, to engineer ferroelectric devices with optimised performance.
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Affiliation(s)
- Y J Shin
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - B C Jeon
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - S M Yang
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - I Hwang
- Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - M R Cho
- Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - D Sando
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - S R Lee
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
| | - J-G Yoon
- Department of Physics, University of Suwon, Hawseong, Gyunggi-do 445-743, Republic of Korea
| | - T W Noh
- 1] Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] Department of Physics and Astronomy, Seoul National University (SNU), Seoul 151-742, Republic of Korea
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Park YJ, Shin YJ, Kim WU, Cho CS. Prediction of subclinical atherosclerosis by serum osteoprotegerin in premenopausal women with systemic lupus erythematous: correlation of osteoprotegerin with monocyte chemotactic protein-1. Lupus 2014; 23:236-44. [DOI: 10.1177/0961203313517151] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objective Patients with systemic lupus erythematosus (SLE) have increased risk for cardiovascular disease. Previous studies disclosed the association of serum osteoprotegerin (OPG) with the presence of symptomatic atherosclerosis in the general population and several disease conditions. We thus investigated the association between serum OPG levels and subclinical atherosclerosis in premenopausal SLE patients. Methods Serum OPG levels and carotid artery intima-media thickness (IMT) were measured in 181 premenopausal SLE patients and age-matched 85 control subjects. Traditional cardiovascular risk factors and SLE-related factors were analyzed. Results Patients with SLE had significantly increased serum OPG levels (1086 versus 517 pg/ml, p < 0.001) and carotid IMT (0.63 versus 0.45 mm, p < 0.001) compared with control subjects. Carotid IMT significantly increased across the quartiles of OPG. Logistic regression analysis revealed that compared to the lowest OPG quartile, the odds ratio (OR, 95% confidence interval) for increased carotid IMT in quartile 2, 3, and 4 was 1.126 (1.013–1.801), 1.562 (1.268–2.799), and 4.460 (1.126–7.128), respectively, after multiple adjustments ( p for trend across quartiles < 0.001). These associations remained significant after further adjustment for inflammatory parameters. Interestingly, serum monocyte chemotactic protein-1 (MCP-1) levels were positively correlated with serum OPG levels (γ = 0.332, p < 0.001). Parallel analysis showed that serum MCP-1 was also an independent predictor of carotid IMT incrassation, but this association was lost when serum OPG was included in the model. Conclusion Serum OPG levels were increased and correlated with serum MCP-1 levels in premenopausal SLE patients. Increased serum OPG was independently associated with subclinical atherosclerosis in these patients.
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Affiliation(s)
- Y-J Park
- Division of Rheumatology, Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea, Suwon, Korea
| | - Y-J Shin
- Division of Rheumatology, Department of Internal Medicine, Yeouido St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - W-U Kim
- Division of Rheumatology, Department of Internal Medicine, St. Vincent Hospital, The Catholic University of Korea, Suwon, Korea
| | - C-S Cho
- Division of Rheumatology, Department of Internal Medicine, Yeouido St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
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Choi S, Kim DY, Whang SH, Lee JH, Hann SK, Shin YJ. Quality of life and psychological adaptation of Korean adolescents with vitiligo. J Eur Acad Dermatol Venereol 2010; 24:524-9. [DOI: 10.1111/j.1468-3083.2009.03452.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Han JW, Kwon SY, Won SC, Shin YJ, Ko JH, Lyu CJ. Comprehensive clinical follow-up of late effects in childhood cancer survivors shows the need for early and well-timed intervention. Ann Oncol 2009; 20:1170-7. [PMID: 19270031 DOI: 10.1093/annonc/mdn778] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Due to recent advances in treatment, nearly 80% of childhood cancer patients become long-term survivors. Studies on the late effects of survivors are under way worldwide. However, data on Asian survivors remain limited. METHODS Data on 241 survivors at the Long-term Follow-up Clinic in Severance Hospital, South Korea, were collected and late effects were confirmed by oncologists. RESULTS The median follow-up from diagnosis was 7.8 years. Late effects were identified in 59.8% of survivors and 23.2% had two or more late effects. Grade 3 or higher late effects were present in 10.8%. The most common late effects involved endocrine system (29.0%). Late effects were present in 95.7% of brain tumor survivors and 36.0% of Wilms' tumor survivors. Chemotherapy, hematopoietic stem-cell transplantation and radiotherapy were significant factors associated with the number and severity of late effects (P < 0.05). Brain tumor survivors had more severe late effects (P < 0.001), whereas Wilms' tumor survivors had fewer and milder late effects (P < 0.05). CONCLUSION The observation that over 50% of cancer survivors suffered from late effects during the short follow-up period and that a high frequency of endocrine late effects was present indicates the need for early and well-timed intervention of the survivors.
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Affiliation(s)
- J W Han
- Department of Pediatric Hematology and Oncology, Yonsei University Health System, Seoul, Korea
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Kwok SK, Shin YJ, Kim HJ, Kim HS, Kim JY, Yoo SA, Choi JJ, Kim WU, Cho CS. Circulating osteoprotegerin levels are elevated and correlated with antiphospholipid antibodies in patients with systemic lupus erythematosus. Lupus 2009; 18:133-8. [DOI: 10.1177/0961203308094819] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Patients with antiphospholipid syndrome (APS) have an increased risk for the development of thrombotic complications. Recent studies indicate that osteoprotegerin (OPG) acts as an important molecule in the development of vascular diseases. The aim of the present study was to examine the association between serum OPG levels and APS manifestations in patients with SLE. Seventy-nine patients with SLE and ninety-two healthy controls, matched for age and sex, were included in this study. Serum levels of OPG, monocyte chemoattractant protein(MCP)-1 and soluble E-selectin were determined by ELISA. At the time of serum sampling, various clinical and laboratory parameters were assessed. We found that serum levels of OPG were significantly higher in patients with SLE than in healthy controls (1236 ± 82 vs 967 ± 37 pg/mL, P = 0.003). Particularly, serum OPG levels were significantly higher in SLE patients with APS than those without (1615 ± 191 vs 1171 ± 91 pg/mL, P = 0.006). Serum OPG levels correlated with titres of IgG anti-cardiolipin antibody ( P = 0.026) and anti-β2-glycoprotein I antibody ( P < 0.001). Moreover, serum OPG also correlated with serum levels of sE-selectin ( P = 0.002), which is an endothelial cell activation marker, and MCP-1 ( P = 0.003), a well known chemokine implicated in thrombogenesis. Collectively, serum OPG levels were increased in SLE patients with APS and correlated with titres of antiphospholipid antibodies, suggesting that OPG might be linked to the development of APS.
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Affiliation(s)
- SK Kwok
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - YJ Shin
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - HJ Kim
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - HS Kim
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - JY Kim
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - SA Yoo
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - JJ Choi
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - WU Kim
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - CS Cho
- Department of Internal Medicine, Division of Rheumatology, St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
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Zhang Q, Shin YJ, Hua F, Saraf LV, Matson DW. Fabrication of transparent capacitive structure by self-assembled thin films. J Nanosci Nanotechnol 2008; 8:3008-3012. [PMID: 18681039 DOI: 10.1166/jnn.2008.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
An approach to fabricating transparent electronic devices by using nanomaterial and nanofabrication is presented in this paper. A see-through capacitor is constructed from self-assembled silica nanoparticle layers that are stacked on the transparent substrate. The electrodes are made of indium tin oxide. Unlike the traditional processes used to fabricate such devices, the self-assembly approach enables one to synthesize the thin film layers at lower temperature and cost, and with a broader availability of nanomaterials. The vertical dimension of the self-assembled thin films can be precisely controlled, as well as the molecular order in the thin film layers. The shape of the capacitor is generated by planar micropatterning. The monitoring by quartz crystal demonstrates the steady growth of the silica nanoparticle multilayer. In addition, because the material synthesis and the device fabrication steps are separate, the fabrication is not affected by the harsh conditions required for the material synthesis. As a result, a clear pattern is allowed over a large area on the substrate. The prepared capacitive structure has an optical transparency higher than 92% over the visible spectrum. The capacitive impedance is measured at different frequencies and fit the theoretical results. As one of the fundamental components, this type of capacitive structure can serve in the transparent circuits, interactive media and sensors, as well as being applicable to other transparent devices.
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Affiliation(s)
- Q Zhang
- Electrical and Computer Engineering Department, Clarkson University, Potsdam, NY 13699, USA
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Kim KR, Kim MK, Shin YJ, Choi BY. Relationship between the change in overweight status from childhood to adolescence and metabolic syndrome phenotypes: a 9-year retrospective study. Eur J Clin Nutr 2007; 62:748-53. [PMID: 17522616 DOI: 10.1038/sj.ejcn.1602783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To evaluate how the changes in overweight status from childhood to adolescence are related to metabolic syndrome phenotypes in adolescents. SUBJECTS AND METHODS A total 375 adolescents aged 16 years. The overweight status from childhood to adolescence (from 7 years of age to 16 years) was determined by body mass index (BMI, kg/m(2)) calculated from records of the School Physical Examination data. The change in body weight was classified into four groups: normal weight to normal weight (NW-NW); overweight to normal (OW-NW); normal to overweight (NW-OW); overweight to overweight (OW-OW). Metabolic syndrome phenotypes were examined from a cross-sectional survey. RESULTS The mean values of all phenotypes except for body fatness (BMI and waist) and the cluster score of phenotypes at 16 years of age were not different between the NW-NW group and the OW-NW group, nor between the NW-OW group and the OW-OW group. However, the score as well as the level of body fatness and blood glucose were significantly different between current overweight and normal adolescents regardless of overweight status during childhood (P<0.05). CONCLUSION There was a linear relationship between overweight status during childhood and metabolic syndrome phenotypes in adolescence but current overweight status (adolescence overweight) was more closely related to the adolescent risk of metabolic syndrome than childhood overweight status.
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Affiliation(s)
- K R Kim
- Department of Preventive Medicine, Hanyang University, College of Medicine, Seoul, Republic of Korea
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15
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Hong KH, Cho ML, Min SY, Shin YJ, Yoo SA, Choi JJ, Kim WU, Song SW, Cho CS. Effect of interleukin-4 on vascular endothelial growth factor production in rheumatoid synovial fibroblasts. Clin Exp Immunol 2007; 147:573-9. [PMID: 17302909 PMCID: PMC1810499 DOI: 10.1111/j.1365-2249.2006.03295.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Interleukin (IL)-4 has been demonstrated to have anti-inflammatory and anti-tumour activity. Because aberrant angiogenesis is a significant pathogenic component of tumour growth and chronic inflammation, we investigated the effect of IL-4 on the production of vascular endothelial growth factor (VEGF) by synovial fibroblasts derived from patients with rheumatoid arthritis (RA). Fibroblast-like synoviocytes (FLS) were prepared from synovial tissues of RA and incubated with different concentrations of IL-4 in the presence or absence of transforming growth factor (TGF)-beta. VEGF level was measured by enzyme-linked immunosorbent assay and semiquantitative reverse transcription--polymerase chain reaction. Treatment of FLS with IL-4 alone caused a dose-dependent increase in VEGF levels. In contrast, IL-4 exhibited the inhibitory effect on VEGF production when FLS were stimulated with TGF-beta. Combined treatment of IL-4 and IL-10 inhibited TGF-beta-induced VEGF production in an additive fashion. TGF-beta increased the induction of cyclooxygenase-2 mRNA, which was inhibited significantly by the treatment of IL-4. NS-398, a COX-2 inhibitor, inhibited TGF-beta-induced VEGF production in a dose-dependent manner. Furthermore, exogenous addition of prostaglandin E2 (PGE2) restored IL-4 inhibition on TGF-beta induced VEGF production. Collectively, our results suggest that IL-4 have an anti-angiogenic effect, especially in the inflammatory milieu of RA by inhibiting the VEGF production in synovial fibroblasts.
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Affiliation(s)
- K-H Hong
- Department of Medicine, Division of Rheumatology, St Mary's Hospital, Research Institute of Immunobiology, Catholic University of Korea, Seoul, Korea
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Kim BM, Kim SY, Lee S, Shin YJ, Min BH, Bendayan M, Park IS. Clusterin induces differentiation of pancreatic duct cells into insulin-secreting cells. Diabetologia 2006; 49:311-20. [PMID: 16411126 DOI: 10.1007/s00125-005-0106-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2005] [Accepted: 10/20/2005] [Indexed: 11/27/2022]
Abstract
AIMS/HYPOTHESIS We recently reported that expression of the gene encoding clusterin (Clu) is upregulated in the regenerating pancreas, particularly in tissues undergoing differentiation. This led us to propose that clusterin participates in the cytodifferentiation of pancreatic tissue, particularly the endocrine islet cells. The aim of this study was to investigate whether clusterin induces the differentiation of duct-lining cells into insulin-secreting cells. METHODS We isolated ductal tissue from rat pancreas and cultured it to develop epithelial cell explants for transfection of the Clu cDNA as well as for treatment of clusterin protein. RESULTS The number of newly differentiated insulin cells increased 6.9-fold upon Clu overexpression compared with controls. Ins1 mRNA and peptide levels were also increased. Furthermore, glucose-stimulated insulin secretion was observed in the differentiated insulin cells. These cells were immunoreactive for insulin and C-peptide, but negative for other islet hormones and for cytokeratin-20, which indicates a fully differentiated state. Insulin cell differentiation was also increased in a dose-dependent manner by treating duct cells in culture with clusterin, indicating a growth-factor-like action of clusterin in insulin cell differentiation. CONCLUSIONS/INTERPRETATION These results suggest that clusterin can be considered as a potential morphogenic factor that promotes differentiation of pancreatic beta cells.
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Affiliation(s)
- B M Kim
- Department of Anatomy, College of Medicine, Inha University Incheon, Choong-Gu, Shinheung-Dong, Incheon 400-103, Korea
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Kim MH, Kim MK, Choi BY, Shin YJ. 547: Educational Disparities in the Metabolic Syndrome in a Rapidly Changing Society, the Case of South Korea. Am J Epidemiol 2005. [DOI: 10.1093/aje/161.supplement_1.s137b] [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: 11/12/2022] Open
Affiliation(s)
- M H Kim
- Eulji University, Daejeon, 301832, Korea
| | - M K Kim
- Eulji University, Daejeon, 301832, Korea
| | - B Y Choi
- Eulji University, Daejeon, 301832, Korea
| | - Y J Shin
- Eulji University, Daejeon, 301832, Korea
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18
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Shin YJ, Cho KO, Cho HS, Kang SK, Kim HJ, Kim YH, Park HS, Park NY. Comparison of one-step RT-PCR and a nested PCR for the detection of canine distemper virus in clinical samples. Aust Vet J 2004; 82:83-6. [PMID: 15088966 DOI: 10.1111/j.1751-0813.2004.tb14651.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To develop a rapid and sensitive method for the detection of canine distemper virus (CDV) by nested PCR using clinical specimens. DESIGN A nested PCR was developed, compared to a one-step RT-PCR and validated. PROCEDURE Two sets of specific primers for a one-step RT-PCR and a nested PCR, targeting a 640 bp fragment and a 297 bp fragment, respectively, were selected from the highly conserved region of the nucleocapsid protein (NP) gene of CDV. The nested PCR and the one-step RT-PCR were used to amplify a part of the CDV NP gene of a CDV vaccinal strain and samples of urine, blood, nasal discharge and saliva from 29 dogs suspected of suffering CD. RESULTS Both the one-step RT-PCR and the nested PCR reacted with the CDV vaccinal strain, but not with canine parvovirus. The expected 640 bp fragment of the NP gene was detected in 11/22 (50.0%) blood, 10/20 (50.0%) urine, 5/25 (20.0%) saliva and 6/27 (22.2%) nasal swab samples by one-step RT-PCR, whereas the nested PCR amplified an expected 297 bp fragment of the NP gene in 18/22 (81.8%) blood, 15/20 (75.0%) urine, 14/25 (56%) saliva and 19/27 (70.3%) nasal swab samples. CONCLUSION The nested PCR detected CDV in blood, urine, nasal swab and saliva more frequently than did the one-step RT-PCR. Therefore, this assay should be a useful aid to antemortem diagnosis of CDV infections in dogs.
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Affiliation(s)
- Y J Shin
- Department of Veterinary Pathology, College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Republic of Korea
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Abstract
Hydrolysis of plasma arginine to citrulline by arginine deiminase (ADI) was recently shown to suppress lipopolysaccharide-induced nitric oxide (NO) synthesis. Since arginine is the precursor of NO, and the latter modulates angiogenesis, we explored whether ADI treatment significantly affected tube-like (capillary) formation of human umbilical vein endothelial cells. Inhibition occurred in a dose-dependent manner, both in the chorioallantoic membrane and the murine Matrigel plug assay. Inhibition of angiogenesis by ADI was reversed when a surplus of exogenous arginine was provided, indicating that its antiangiogenic effect is primarily due to arginine depletion, although other pathways of interference are not entirely excluded. Arginine deiminase is also shown to be as a potent inhibitor of tumour growth in vitro as in vivo, being effective at nanogram quantities per millilitre in CHO and HeLa cells. Thus, it could be highly beneficial in cancer therapy because of its two-pronged attack as both an antiproliferative and an antiangiogenic agent.
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Affiliation(s)
- I-S Park
- Department of Anatomy, College of Medicine, Inha University, Inchon 400-103, Korea
| | - S-W Kang
- Department of Pharmacology and BK21 Program for Medical Sciences, College of Medicine, Korea University, Seoul 136-705, Korea
| | - Y-J Shin
- Department of Pharmacology and BK21 Program for Medical Sciences, College of Medicine, Korea University, Seoul 136-705, Korea
| | - K-Y Chae
- Department of Pharmacology and BK21 Program for Medical Sciences, College of Medicine, Korea University, Seoul 136-705, Korea
| | - M-O Park
- Department of Pharmacology and BK21 Program for Medical Sciences, College of Medicine, Korea University, Seoul 136-705, Korea
| | - M-Y Kim
- AngioLab, Inc., Taejon 302-735, Korea
| | - D N Wheatley
- Department of Cell Pathology, University of Aberdeen, MacRobert Building, 581 King Street, Aberdeen AB24 5UA, UK
| | - B-H Min
- Department of Pharmacology and BK21 Program for Medical Sciences, College of Medicine, Korea University, Seoul 136-705, Korea
- 5Ga 126-1, Anam-dong, Sungbuk-Gu, Seoul 136-705, Korea. E-mail:
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Abstract
We followed students in eight elementary schools for rubella antibody from 1993 to 1996 (602 pairs) and 1996-9 (588 pairs) in Gyeonggi Province, Korea. We tested rubella IgG and administered rubella vaccine to the children with the titres < 10 IU/ml. The loss rates of rubella IgG during the follow-up periods were 14.3 and 15.8%, respectively. Among vaccinated groups, the loss rate was 18.8%, which was significantly higher than 13.8% of the mixture of natural and vaccine-induced immunity groups. The group that had the lower preceding antibody titre had a higher loss rate of 24.8% compared to 7.2% for the group whose titre was 40 IU/ml or above. In a multivariate analysis, age and gender were not related to antibody loss rate. Under this higher rubella antibody loss rate, in order to prevent congenital rubella syndrome, the immunization for women at childbearing age appears necessary until rubella can be eliminated or controlled.
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Affiliation(s)
- M Ki
- Department of Preventive Medicine, Eulji University School of Medicine, Daejon, Korea
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Rose X, Shin YJ, Charlet JP, Deguine O, Fraysse B. [Ambulatory surgery of otosclerosis: retrospective study of 102 cases]. Rev Laryngol Otol Rhinol (Bord) 2002; 122:273-7. [PMID: 11938530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
A retrospective study of 102 selected patients operated for otosclerosis (34 outpatient surgery, 68 hospitalised), having all of them the inclusion criteria of the ambulatory surgery, treated as outpatient in a traditional health sector or hospitalised, depending on their own choice, has been lead. We analysed the results of the pure tone audiometric tests two to six months after surgery. No significative difference was found between the two groups on audiometric results as for the postoperative complications. On the other side, it seems that young patients are more interested by the one-day surgery. The failure of the ambulatory surgery could be explained by the vertigo or dizziness per- or postoperatively. Finally, the evaluation of the cost-benefit shows that the ambulatory surgery in a traditional health sector could lead a budgetary saving policy. A saving way that will grow in a specialized sector devoted to the ambulatory practice.
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Affiliation(s)
- X Rose
- CHU Purpan, Service d'Otologie et d'Otoneurochirurgie, Place du Dr Baylac, F-31059 Toulouse, France
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Abstract
OBJECTIVE To determine the change of expression of Bcl2 in cisplatin-resistant bladder cancer cell lines and the reversibility of chemoresistance to cisplatin with antisense oligonucleotide against Bcl2, as higher expression of Bcl2 is associated with drug resistance in many different cancer cell lines. MATERIALS AND METHODS In the cisplatin-resistant bladder tumour cell lines T24R1 and T24R2, the expression of Bcl2 was determined by reverse transcription-polymerase chain reaction and Western blot assay, and antisense oligonucleotide targeting of the Bcl2 coding sequence was administered with lipofectin. RESULTS The expression of Bcl2 mRNA and protein was greater in T24R1 and T24R2 cells than in the parent T24 cells. Short-term exposure to cisplatin up-regulated Bcl2 mRNA and protein expression in parent T24 cells. Treatment with antisense oligonucleotide down-regulated Bcl2 protein expression and significantly enhanced the cytotoxicity of cisplatin. CONCLUSIONS Up-regulation of Bcl2 protein expression might be one of the mechanisms of cisplatin resistance in bladder cancer cells, and antisense Bcl2 oligonucleotide may be helpful in chemotherapy for bladder cancer by reversing cisplatin resistance.
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Affiliation(s)
- J H Hong
- Department of Urology, University of Ulsan College of Medicine, Korea
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Shin YJ, Deguine O, Cognard C, Sévely A, Manelfe C, Fraysse B. [Reliability of CT scan in the diagnosis of conductive hearing loss with normal tympanic membrane]. Rev Laryngol Otol Rhinol (Bord) 2002; 122:81-4. [PMID: 11715265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The goal of this study was to assess the reliability of CT-Scan in the cases of conductive hearing losses with normal tympanic membrane. A computed tomography of the temporal bone (CT-Scan) has been performed in a prospective manner in all patients who underwent surgery for a conductive hearing loss with a normal tympanic membrane in our department. Out of 474 cases, 437 cases (92.2%) presented with otosclerosis. In 25 cases a minor malformation (5.3%) was found at surgery, and in 12 cases (2.5%), another diagnosis was made. Sensitivity of CT-Scan was 91.3% in otosclerosis and 57% in minor malformations. In 8.7% of cases, a superficial and beginning surgical focus was put in evidence whereas CT-Scan was normal. Theses cases represent infra-radiological cases of otosclerosis. In case of radiological otosclerosis, fenestral otosclerosis was found in 83.5% of the cases. CT-Scan was found specific on the operated and deaf side, but in 11.3% of the cases, a radiologic focus did not have a clinical consequence on the controlateral side. A radiological focus is not systematically responsible for a hearing loss. Finally, CT-Scan remains a reliable, sensitive and specific exam in the diagnosis of cases of conductive hearing losses with normal tympanic membrane.
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Affiliation(s)
- Y J Shin
- Hôpital Purpan, Service ORL, 1 Place du Dr. Baylac, 31059 Toulouse, France.
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Yoon HR, Hahn SH, Ahn YM, Jang SH, Shin YJ, Lee EH, Ryu KH, Eun BL, Rinaldo P, Yamaguchi S. Therapeutic trial in the first three Asian cases of ethylmalonic encephalopathy: response to riboflavin. J Inherit Metab Dis 2001; 24:870-3. [PMID: 11916321 DOI: 10.1023/a:1013948409790] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Three Korean girls with ethylmalonic encephalopathy, the first Asian cases, were identified. In all three cases, we observed slight improvement in motor functions, cognitive behaviours and chronic mucoid diarrhoea after treatment with riboflavin and/or coenzyme Q10 treatment. The precise pathogenesis of ethylmalonic encephalopathy has not been fully elucidated, but riboflavin treatment may be helpful.
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Affiliation(s)
- H R Yoon
- Metabolic Disease Detection Laboratory, Seoul Medical Science Institute, Korea
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Abstract
AIMS/HYPOTHESIS Beta-cell regeneration has been reported after islet injury in an animal model for diabetes. Recently, we showed up-regulation of clusterin after islet injury and suggested that clusterin might be involved in cytoprotection and in the regeneration of islet cells. The aim of this study was to investigate the correlation of clusterin expression with islet regeneration and its effect on islet cell replication. METHODS Streptozotocin was administrated to rats to induce various types of diabetes. Islet regeneration and clusterin expression were examined after islet injuries. Clusterin cDNA was transfected to MIN6 cells and their proliferation activity was measured by a [3H]thymidine-incorporation assay. RESULTS A diabetogenic dose of streptozotocin injected in rats provoked an immediate degeneration of beta cells. In this model, islets showed increased clusterin expression with extensive proliferation of alpha cells but showed poor beta-cell replication. A subdiabetogenic dose of streptozotocin, however, led to the proliferation of beta cells with clusterin up-regulation. In streptozotocin-treated neonatal rats, up-regulation of clusterin was noted during beta-cell proliferation. In all experimental models, clusterin was expressed in alpha cells in close correlation with islet cell proliferation, higher transcription of insulin mRNA and MAPKs activation. Cell replication was increased by 31 % in the MIN6 cells transfected by the clusterin cDNA. CONCLUSION/INTERPRETATION Up-regulation of clusterin in alpha cells might induce beta-cell proliferation and thus restore their population after islet injury. We suggest that clusterin could be considered as a growth factor-like molecule stimulating islet-cell proliferation by paracrine action.
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Affiliation(s)
- B M Kim
- Department of Anatomy, College of Medicine, Inha University, Choong-Gu, Shinheung-Dong, Inchon, Korea
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Shin YJ, Calvas P, Deguine O, Charlet JP, Cognard C, Fraysse B. Correlations between computed tomography findings and family history in otosclerotic patients. Otol Neurotol 2001; 22:461-4. [PMID: 11449100 DOI: 10.1097/00129492-200107000-00008] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Otosclerosis is a heritable disease affecting the otic capsule. Its genetics have been studied since the 19th century, but several issues remain controversial. OBJECTIVE The goals of this study were to assess the prevalence of sporadic and familial forms of otosclerosis in a population of otosclerotic patients and to compare the radiologic findings between both groups. STUDY DESIGN AND SETTING This retrospective study was conducted in a single institution. PATIENTS This study included 211 patients operated on for otosclerosis. MAIN OUTCOME MEASURES Clinical data, including pure tone audiograms, were available from patients' charts. A questionnaire assessing family history of otosclerosis and deafness was mailed to the otosclerotic patients. A relative was considered otosclerotic if surgery confirmed the disease. The family history was correlated with the computed tomography results. This examination was performed before surgery in all patients. RESULTS A family history of otosclerosis was found in 24.2% of the patients. The radiologic findings differed between patients with a sporadic form of otosclerosis and those with a familial form. The lesions were more often detectable, bilateral, and severe in the familial forms (p < 0.05). CONCLUSION These findings lead to the assumption that fenestral radiologic otosclerosis occurs more in sporadic forms, whereas more extensive lesions on computed tomography seem to indicate the familial forms. Hereditary forms demonstrated to be familial seem to lead to more severe disease. The search for a genome locus of otosclerosis may be enlightened by these findings.
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Affiliation(s)
- Y J Shin
- Department of Otolaryngology, Purpan Hospital, Toulouse, France
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Hyun MH, Han SC, Lipshutz BH, Shin YJ, Welch CJ. New chiral crown ether stationary phase for the liquid chromatographic resolution of alpha-amino acid enantiomers. J Chromatogr A 2001; 910:359-65. [PMID: 11261730 DOI: 10.1016/s0021-9673(00)01230-9] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new chiral stationary phase (CSP) for the liquid chromatographic separation of enantiomers was prepared by bonding a novel enantiopure (diphenyl-substituted 1,1'-binaphthyl) crown ether to 5 microm silica gel. The resulting CSP was applied to the separation of the enantiomers of various natural and unnatural alpha-amino acids. All alpha-amino acids tested were resolved very well on the new CSP, with the exception of proline, which does not contain a primary amino group. The resolution of alpha-amino acid enantiomers on this new CSP was found to be dependent on the type and amounts of organic and acidic modifiers, and on column temperature.
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Affiliation(s)
- M H Hyun
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, South Korea.
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28
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Shin YJ, Fraysse B, Deguine O, Cognard C, Charlet JP, Sévely A. Sensorineural hearing loss and otosclerosis: a clinical and radiologic survey of 437 cases. Acta Otolaryngol 2001; 121:200-4. [PMID: 11349779 DOI: 10.1080/000164801300043505] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The aim of this study was to determine if a relationship exists between bone level thresholds and the extension of otosclerotic foci within the otic capsule. The study consisted of a retrospective case review in a university hospital. We included patients who underwent surgery for otosclerosis in our department and who had a CT scan prior to surgery. We analyzed the data charts and CT scans of 437 cases (386 patients). On CT scan, we distinguished patients with fenestral otosclerosis and/or with a pericochlear focus. A pericochlear focus could be extended (Group 2) or not (Group 1) to the cochlear endosteum. Data for Groups 1 and 2 were compared with those for the control group of all patients for whom CT scan showed no cochlear focus (Group 3). Of the 437 CT scans, 399 were positive (91.3%). An anterior focus was reported in 305 cases (69.8%), a footplate thickening in 21 cases (4.8%) and both anomalies were encountered in 60 cases (13.7%). A pericochlear focus was reported in 53 examinations. This focus was extended to the endosteum in 14 cases (26.4% of the pericochlear foci). In Group 1, preoperative air conduction (AC) thresholds were significantly lower than in the control group (p < 0.05). The air--bone gap was also significantly larger in Group 1 (p < 0.05). Bone conduction (BC) thresholds were lower in Group 1 than in the control group but the difference was not significant. In Group 2, preoperative AC thresholds were significantly lower than in the control group (p < 0.05). BC thresholds were also lower in Group 2 than in the control group and the difference was significant (p < 0.05). As a result of this study, we assume that there may be a relationship between bone level thresholds and the radiological extension of otosclerosis within the otic capsule.
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Affiliation(s)
- Y J Shin
- Department of Otolaryngology, Purpan Hospital, Toulouse, France.
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Shin YJ, Fraysse B, Cognard C, Gafsi I, Charlet JP, Berges C, Deguine O, Tremoulet M. Effectiveness of conservative management of acoustic neuromas. Am J Otol 2000; 21:857-62. [PMID: 11078076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
OBJECTIVE The goal of this study was to assess the effectiveness of the conservative management in patients with acoustic neuroma (vestibular schwannoma). STUDY DESIGN This retrospective study was performed in a university hospital. PATIENTS Patients were selected for this wait-and-see policy on the basis of age, general condition, audiometric results, tumor size, and patient preference. The study group included 97 patients, 87 of whom had at least two neuroradiologic examinations. The mean age of this population was 63 years (29 to 89 years). The mean length of follow-up of this population was 31 months. Eighty-seven of these patients had at least two radiologic examinations (magnetic resonance imaging or computed tomography). The mean interval between the initial and follow-up radiologic examinations was 15 months. MAIN OUTCOME MEASURES Tumor size was measured by use of two-dimensional data in all patients. The mean tumor size was 12 mm. The growth rate of the tumor was estimated by comparison of the results of the measurements from the initial and follow-up neuroradiologic examinations. RESULTS Of the 97 patients studied, 6 patients required surgery and 6 required radiotherapy. Sixty patients (62%) were still being treated conservatively at the end of the study period. Three patients of 28 who were classified as candidates for hearing preservation surgery lost their candidacy during the observation period. The mean annual tumor growth rate was 1.52 mm/year. The tumor was stable in size in 36% of patients, regressed in 11% of patients, or grew in 53% of patients. The growth patterns of the acoustic neuroma fell into five categories: continuous growth in 15% of patients, negative growth in 5%, growth followed by negative growth in 40%, negative growth followed by growth in 20%, and no variation of tumor size in 20%. CONCLUSION Conservative management of acoustic neuromas carries difficulties: long-term follow-up of the patients and unpredictability of the tumor growth pattern. A reliable and reproducible radiologic method for evaluating tumor size is of great importance.
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Affiliation(s)
- Y J Shin
- Department of Otolaryngology, Hôpital Purpan, Toulouse, France
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Kang Y, Park JS, Kim SH, Shin YJ, Kim W, Joo HJ, Chun JS, Kim HJ, Ha MJ. Overexpression of protein kinase C delta represses expression of proliferin in NIH3T3 cells that regulates cell proliferation. Mol Cell Biol Res Commun 2000; 4:181-7. [PMID: 11281734 DOI: 10.1006/mcbr.2001.0276] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Protein kinase C (PKC) delta is known to inhibit proliferation of many cell types. In this study we found that overexpression of PKCdelta reduced proliferation of NIH3T3 cells. To identify specific genes regulated by PKCdelta in regulation of cell proliferation, we used differential display-polymerase chain reaction in PKCdelta-overexpressing NIH3T3 cells and found that the expression of proliferin, a secreted protein known to stimulate cell proliferation, was significantly repressed. Transient transfection study indicated that the repression of proliferin expression was inversely proportional to the expression levels of PKCdelta. Addition of an anti-proliferin antibody to culture medium to neutralize the secreted proliferin decreased cell proliferation in a dose-dependent manner. Our results, therefore, suggest that overexpression of PKCdelta induces transcriptional repression of proliferin, thereby resulting in inhibition of cell proliferation.
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Affiliation(s)
- Y Kang
- Institute for Medical Sciences, Ajou University School of Medicine, Suwon 442-721, Korea
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31
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Shin YJ, Deguine O, Sevely A, Manelfe C, Fraysse B. Pure sensorineural hearing loss and otosclerosis. An imaging case report. Rev Laryngol Otol Rhinol (Bord) 2000; 121:45-7. [PMID: 10865484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Pure sensorineural hearing loss is not a rare finding in otological practice. Numerous aetiologies could be at the origin of such a deficit. However, otosclerosis is very rarely cited as a cause of pure sensorineural hearing loss. We present one such case of pure sensorineural hearing loss linked to otosclerosis in a 30-year old caucasian male and underline the high contribution of computed tomography to confirm such a diagnosis. Pure sensorineural hearing loss due to otosclerosis is a rare event and can be misdiagnosed. The clinical diagnosis of such a disease may be difficult. In these cases, CT-Scan is the exam of choice to confirm the diagnosis.
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Affiliation(s)
- Y J Shin
- CHU Purpan, Department of Otolaryngology, Toulouse, France.
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Shin YJ, Woo JH, Chung CH, Kim HS. Retinoic acid and its geometrical isomers block both growth and fusion of L6 myoblasts by modulating the expression of protein kinase A. Mol Cells 2000; 10:162-8. [PMID: 10850657 DOI: 10.1007/s10059-000-0162-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
All-trans retinoic acid (RA) and its geometrical isomers, such as 9-cis RA, 13-cis RA, and 9,13-di-cis RA, strongly inhibited both growth and fusion of L6 myoblasts. However, illumination of white light diminished their inhibitory activity on membrane fusion with little effect on cell growth. During myogenic differentiation, the intracellular level of cAMP decreased whereas the total activity of protein kinase A as well as the protein level of its regulatory subunit Ialpha (RIalpha) and catalytic subunit (Calpha) increased. RAs raised the intracellular level of cAMP by over 3-fold, but decreased the total activity of protein kinase A. Like RAs, dibutyryl-cAMP inhibited myoblast fusion and reduced the expression of both RIalpha and Calpha subunits. These results suggest that RAs negatively modulate the differentiation of L6 myoblasts by increasing the intracellular level of cAMP, which may in turn down-regulate the expression of protein kinase A and hence its activity.
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Affiliation(s)
- Y J Shin
- Department of Biological Science, College of Natural Sciences, Ajou University, Suwon, Korea
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Shin YJ, Fraysse B, Deguine O, Valès O, Laborde ML, Bouccara D, Sterkers O, Uziel A. Benefits of cochlear implantation in elderly patients. Otolaryngol Head Neck Surg 2000; 122:602-6. [PMID: 10740189 DOI: 10.1067/mhn.2000.98317] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cochlear implantation in elderly patients is a questionable subject. The purpose of this study was to evaluate the procedure and its outcome, the postoperative course, and the audiologic and social benefits of cochlear implantation in this population. Twenty-seven patients older than 60 years were compared with a control group of 15 adult patients. This retrospective study analyzed data concerning the outcome of the procedure, postoperative course, postoperative orthophonic test results, and answers of a questionnaire assessing the changes in communication, perception, and social outcomes. The procedure was uneventful in both groups. Minor complications were not more frequent in elderly patients. Orthophonic test results were comparable in both groups. At 12 months, 83% of the elderly patients had an open-set speech discrimination score above 60%. The benefits of cochlear implantation in terms of the quality of life are not statistically different with younger patients. Cost-utility analysis might support these findings.
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Affiliation(s)
- Y J Shin
- Department of Otolaryngology, Purpan Hospital, Toulouse, France
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Cho SW, Shin YJ, Hahm KB, Jin JH, Kim YS, Kim JH, Kim HJ. Analysis of the precore and core promoter DNA sequence in liver tissues from patients with hepatocellular carcinoma. J Korean Med Sci 1999; 14:424-30. [PMID: 10485623 PMCID: PMC3054394 DOI: 10.3346/jkms.1999.14.4.424] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
To investigate the role of mutant hepatitis B virus (HBV) in the development of hepatocellular carcinoma (HCC), 20 patients with HCC were studied for precore and core promoter mutations in tumorous and nontumorous tissues. The precore and core promoter region was amplified and analyzed by direct sequencing. Among the 20 tumorous and nontumorous tissues, precore mutant HBV was found in 12 (60%) and 18 (90%), respectively. Of the 12 tumorous tissues with precore mutant, nine tissues had a single mutation (1896) and one tissue had another single mutation (1899). The remaining two tissues had a double mutation (1896 and 1899). A single mutation (1896) and a single mutation (1899) were found in 11 and two of the 18 nontumorous tissues with precore mutant, respectively. Among 20 tumorous and nontumorous tissues, HBV with a C to T mutation at nucleotide (nt) 1846 was detected in six and eight, respectively, and was associated with the virus carrying a mutation (1896 or 1899) except in two tumorous tissues. Mutations at nt 1762 and 1764 in core promoter were observed in 16 (80%) tumorous tissues and 18 (90%) nontumorous tissues. Mutations in the precore and core promoter region were found frequently in nontumorous tissue and in tumorous tissue (18/20 and 12/20 in precore region, 18/20 and 16/20 in core promoter respectively). The high prevalence of precore and core promoter mutations in liver tissue from patients with HCC suggests that these mutations may contribute to the development of HCC.
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Affiliation(s)
- S W Cho
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea
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Abstract
This study compared a small group of Korean-American adoptees with their adoptive siblings who are biological children of the adoptive parents with respect to their psychosocial adjustment. Eighteen Korean-American adoptees were compared with nine biological children by a structured demographic, medical, clinical survey form and the Child Behavior Checklist-Parent Form (CBCL-P). The parents did not raise any more concerns about the adjustment of adopted children than their biological children. On the CBCL-P, the two groups did not differ significantly in competence T-scores, total behavioral problems, broad and T-scores and the total number of problem behaviors except for lower social competence in adopted children and a higher internalization score in biological children. In conclusion, the international adoptees, the Korean-American children have adjusted well during their early childhood after early adoption. Further studies employing a larger sample are warranted to better understand the international adoption practice.
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Affiliation(s)
- W J Kim
- Medical College of Ohio, USA
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Ryu YH, Lee JD, Yoon PH, Kim DI, Lee HB, Shin YJ. Perfusion impairments in infantile autism on technetium-99m ethyl cysteinate dimer brain single-photon emission tomography: comparison with findings on magnetic resonance imaging. Eur J Nucl Med 1999; 26:253-9. [PMID: 10079316 DOI: 10.1007/s002590050385] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The neuro-anatomical substrate of autism has been the subject of detailed investigation. Because previous studies have not demonstrated consistent and specific neuro-imaging findings in autism and most such studies have been performed in adults and school-aged children, we performed a retrospective review in young children in search of common functional and anatomical abnormalities with brain single-photon emission tomography (SPET) using technetium-99m ethyl cysteinate dimer (ECD) and correlative magnetic resonance imaging (MRI). The patient population was composed of 23 children aged 28-92 months (mean: 54 months) who met the diagnostic criteria of autism as defined in the DSM-IV and CARS. Brain SPET was performed after intravenous injection of 185-370 MBq of 99mTc-ECD using a brain-dedicated annular crystal gamma camera. MRI was performed in all patients, including T1, T2 axial and T1 sagittal sequences. SPET data were assessed visually. Twenty patients had abnormal SPET scans revealing focal areas of decreased perfusion. Decreased perfusion of the cerebellar hemisphere (20/23), thalami (19/23), basal ganglia (5/23) and posterior parietal (10/23) and temporal (7/23) areas were noted on brain SPET. By contrast all patients had normal MRI findings without evidence of abnormalities of the cerebellar vermis, cerebellar hemisphere, thalami, basal ganglia or parietotemporal cortex. In conclusion, extensive perfusion impairments involving the cerebellum, thalami and parietal cortex were found in this study. SPET may be more sensitive in reflecting the pathophysiology of autism than MRI. However, further studies are necessary to determine the significance of thalamic and parietal perfusion impairment in autism.
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Affiliation(s)
- Y H Ryu
- Division of Nuclear Medicine, Department of Diagnostic Radiology, Yonsei University College of Medicine, Seoul, Korea
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37
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Shin YJ, Percodani J, Coste EU, Delisle MB, Serrano E, Pessey JJ. [Adenoid cystic carcinoma of the larynx. A case report and review of the literature]. Rev Laryngol Otol Rhinol (Bord) 1998; 119:105-8. [PMID: 9770052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Laryngeal adenoïd cystic carcinoma (ACC) is a rare disease due to the poor distribution of the accessory salivary glands in this area. The authors describe a case of ACC arising from the sus glottic area and underline the difficulty of such a diagnosis, which is in fact an histologic finding. The signs of discovery of a laryngeal ACC are not different from other tumors of the area, except pain frequently evoked in these tumors. Laryngeal ACC arises exceptionally before the age of 20 years and no risk factor is known. The most frequent localization is in the sub-glottic area, but sus glottic and glottic localizations have been reported. Evolution is marked by the onset of cervical lymph adenopathies and systemic metastasis most often located in the lung. The treatment comprises wide surgical exerisis followed by radiotherapy. Other reports seem to indicate that the pronostic of the laryngeal location of this disease is worse than in other areas of the head and neck.
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Affiliation(s)
- Y J Shin
- CHU de Rangueil, Service d'ORL, et de Chirurgie Cervico-Faciale, Toulouse, France
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Shin YJ, Fraysse B, Sterkers O, Bouccara D, Rey A, Lazorthes Y. Hearing restoration in posterior fossa tumors. Am J Otol 1998; 19:649-53. [PMID: 9752975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE This study aimed to assess the results of hearing restoration with a cochlear or a brainstem implant in posterior fossa tumors. PATIENTS Six patients were selected. Two patients with an acoustic neuroma in the only-hearing ear (cases 1 and 2), one patient with a posterior fossa meningioma (case 3), one patient with bilateral facial neuroma (case 4), and two patients with bilateral acoustic neuroma (cases 5 and 6) participated. INTERVENTION In cases 1 and 2, the patients had a cochlear implant inserted on the only-hearing ear opposite the acoustic neuroma. In case 3, the patient presented with total deafness on the left side and a 10-mm meningioma on the right side. A cochlear implantation was performed after removal of the meningioma on the right side. In case 4, the patient was operated on on both sides with bilateral postoperative deafness. A cochlear implantation was performed on the better hearing ear. In cases 5 and 6, patients underwent an auditory brainstem implantation after the exeresis of the second tumor. RESULTS Promontory test results were positive for patients 1, 2, 3, and 4. After implantation, patients 1, 2, 3, and 4 scored 98%, 13%, 70%, and 30%, respectively, in open-set sentence recognition tests, whereas patients 5 and 6 scored 0% and 20%, respectively. CONCLUSIONS In case of nonfunctional cochlear nerve, in acoustic neuroma, either bilateral and in the only-hearing ear, promontory test should be performed. If positive results, a cochlear implantation should be performed, because successful results could be expected. Overall results of cochlear implantation on speech discrimination are better than those obtained with a brainstem implant.
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Affiliation(s)
- Y J Shin
- Department of Otolaryngology, Purpan Hospital, Toulouse, France
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Shin YJ, Cho SW, Hahm KB, Kim YS, Kim JH, Park KH, Lee SI. Localization of hepatitis B virus DNA in hepatocellular carcinoma by polymerase chain reaction in situ hybridization. J Korean Med Sci 1998; 13:377-82. [PMID: 9741541 PMCID: PMC3054413 DOI: 10.3346/jkms.1998.13.4.377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The polymerase chain reaction in situ hybridization (PCR-ISH) is a new technique that combines the sensitivity of PCR with the localizing ability of ISH. To investigate the expression pattern of hepatitis B virus (HBV) in the tissue of hepatocellular carcinoma (HCC), we detected HBV-DNA with PCR-ISH in paraffin-embedded tumor and corresponding non-tumor tissues from 11 HCC patients. HBV-DNA was detected in 4 of 11 tumor tissues and in 7 of 10 non-tumor tissues. In tumor tissues, positive signals were scattered in the tissue with occasional clustering, and were found mainly in the cytoplasm of HCC cells rather than in the nucleus. In non-tumor tissues, the number of positive signals was higher than in tumor tissues and they were found in regenerating nodules with differing patterns and intensities. When we compared the detection rate of PCR-ISH with nested PCR among 10 tissue samples, HBV-DNA was detected in 5 tissue samples by PCR-ISH, but the S gene was detected in 10, precore gene in 9 and X gene in 8 by nested PCR. The findings suggest that PCR-ISH is a sensitive technique for localizing HBV in tissue sections and that the low level of HBV replication persists in HCC cells.
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Affiliation(s)
- Y J Shin
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea
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Shin YJ, Deguine O, Laborde ML, Fraysse B. [Conservation of residual hearing after cochlear implantation]. Rev Laryngol Otol Rhinol (Bord) 1998; 118:233-8. [PMID: 9637091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Indications for cochlear implantation have been expanded to include severely hearing impaired adults and may increase the number of patients presenting with preoperative residual hearing. Conservation of residual hearing may allow better performance with an implant. However, conventional thought is that implantation destroys auditory structures involved in residual hearing. This study was undertaken to assess if there are general or surgical factors intervening in the conservation of residual hearing in a sample of multichannel implant recipients. A retrospective study on 50 adult cochlear recipients with preoperative residual hearing has been undertaken. Sixteen of 50 implanted subjects (32%) were found to have conserved their residual hearing. Among them, seven patients have clinically non-significant changes of hearing. Age, side of implantation, gender and etiology did not influence the outcome of residual hearing. Round window ossification, ossification of the cochlea, length of insertion, approach and site of insertion (scala tympani vs.scala vestibuli) were not found to be statistically significant between the population having lost and the population having conserved residual hearing. This study emphasizes the need to undertake a larger multicenter longitudinal study to determine the existence of factors related to the conservation of residual hearing.
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Affiliation(s)
- Y J Shin
- CHU Purpan, Service d'O.R.L., Toulouse, France
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Shin YJ, Deguine O, Valès O, Laborde ML, Fraysse B. [Cochlear implants in the elderly]. Rev Laryngol Otol Rhinol (Bord) 1998; 118:227-31. [PMID: 9637090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The authors present a retrospective and multicenter study of 18 elderly patients aged above 60 years-old who underwent a cochlear implantation by comparing them with a population of adult patients. The purpose of this study is to evaluate the utility and benefits of cochlear implantation in the elderly by analyzing the clinical data and the results of a questionnaire assessing the use of the implant and the consequences of implantation on the quality of life. The results of this study indicate that the improvement of quality of life in the elderly is similar compared to a control group of adult patients.
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Affiliation(s)
- Y J Shin
- CHU Purpan, Service d'O.R.L., Toulouse, France
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Ryu JS, Min DY, Ahn MH, Choi HG, Rho SC, Shin YJ, Choi B, Joo HD. Toxoplasma antibody titers by ELISA and indirect latex agglutination test in pregnant women. Korean J Parasitol 1996; 34:233-8. [PMID: 9017908 DOI: 10.3347/kjp.1996.34.4.233] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The seroepidemiologic studies on anti-Toxoplasma antibody titers were carried out using ELISA and indirect latex agglutination test. Among 899 sera prepared from pregnant women, 39 cases (4.3%) revealed positive reaction and 218 sera from middle school students showed 4 positive reaction (1.8%) by ELISA. By LAT (newly established by National Veterinary Research Institute. Korea), the sera of 7 pregnant women (0.8%) showed positive reaction. When 80 sera showing > or = 1:8 by LAT were used for comparing the results obtained from LAT and Toxotest-MT (Eiken Chemical Co., Japan), 7 cases and 8 sera were positive, respectively. All of 11 sera of proven toxoplasmosis patients showed positive reaction in both tests. Overall proportion of agreement between LAT kit and Toxotest-MT was 0.94 (kappa-index = 0.632, p < 0.011, and LAT was considered to be useful for the screening of toxoplasmosis.
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Affiliation(s)
- J S Ryu
- Department of Parasitology, College of Medicine, Hanyang University, Seoul, Korea
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Shin YJ, Kim SK, Park BH, Jeong TS, Shin HK, Kim TS, Yu PY. Photocurrent study on the splitting of the valence band for a CdS single-crystal platelet. Phys Rev B Condens Matter 1991; 44:5522-5526. [PMID: 9998388 DOI: 10.1103/physrevb.44.5522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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