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Kuhfeld RF, Eshpari H, Kim BJ, Kuhfeld MR, Atamer Z, Dallas DC. Identification of bitter peptides in aged Cheddar cheese by crossflow filtration-based Fractionation, Peptidomics, statistical screening and sensory analysis. Food Chem 2024; 439:138111. [PMID: 38104442 DOI: 10.1016/j.foodchem.2023.138111] [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: 08/16/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/19/2023]
Abstract
Despite bitterness being a common flavor attribute of aged cheese linked to casein-derived peptides, excessive bitterness is a sensory flaw that can lead to consumer rejection and economic loss for creameries. Our research employs a unique approach to identify bitter peptides in cheese samples using crossflow filtration-based fractionation, mass spectrometry-based peptidomics, statistics and sensory analysis. Applying peptidomics and statistical screening tools, rather than traditional chemical separation techniques, to identify bitter peptides allows for screening the whole peptide profile. Five peptides-YPFPGP (β-casein [60-65]), YPFPGPIPN (βA2-casein [60-68]), LSQSKVLPVPQKAVPYPQRDMPIQA (β-casein [165-189]), YPFPGPIHNS (βA1-casein [60-69]) and its serine phosphorylated version YPFPGPIHN[S] (βA1-casein [60-69])- demonstrated high levels of bitterness with mean bitterness intensity values above 7 on a 15-point scale. In the future, this data can be combined with the microbial and protease profile of the Cheddar samples to help understand how these factors contribute to bitter taste development.
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Affiliation(s)
- R F Kuhfeld
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, 97333.
| | - H Eshpari
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, 97333
| | - B J Kim
- Nutrition Program, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, 97333
| | - M R Kuhfeld
- Northwest Evaluation Association, Portland, OR, 97209
| | - Z Atamer
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, 97333
| | - D C Dallas
- Department of Food Science and Technology, Oregon State University, Corvallis, OR, 97333; Nutrition Program, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, 97333
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Kim Y, Kim MJ, Cha S, Choi S, Kim CJ, Kim BJ, Jo MH, Kim J, Lee J. Dephasing Dynamics Accessed by High Harmonic Generation: Determination of Electron-Hole Decoherence of Dirac Fermions. Nano Lett 2024; 24:1277-1283. [PMID: 38232182 DOI: 10.1021/acs.nanolett.3c04278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
We reveal the critical effect of ultrashort dephasing on the polarization of high harmonic generation in Dirac fermions. As the elliptically polarized laser pulse falls in or slightly beyond the multiphoton regime, the elliptically polarized high harmonic generation is produced and exhibits a characteristic polarimetry of the polarization ellipse, which is found to depend on the decoherence time T2. T2 could then be determined to be a few femtoseconds directly from the experimentally observed polarimetry of high harmonics. This shows a sharp contrast with the semimetal regime of higher pump intensity, where the polarimetry is irrelevant to T2. An access to the dephasing dynamics would extend the prospect of high harmonic generation into the metrology of a femtosecond dynamic process in the coherent quantum control.
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Affiliation(s)
- Youngjae Kim
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
- School of Physics, KIAS, Seoul 02455, Republic of Korea
| | - Min Jeong Kim
- Department of Materials Science and Engineering, POSTECH, Pohang 37673, Republic of Korea
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - Soonyoung Cha
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - Shinyoung Choi
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
- Department of Chemical Engineering, POSTECH, Pohang 37673, Republic of Korea
| | - Cheol-Joo Kim
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
- Department of Chemical Engineering, POSTECH, Pohang 37673, Republic of Korea
| | - B J Kim
- Department of Physics, POSTECH, Pohang 37673, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - Moon-Ho Jo
- Department of Materials Science and Engineering, POSTECH, Pohang 37673, Republic of Korea
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - Jonghwan Kim
- Department of Materials Science and Engineering, POSTECH, Pohang 37673, Republic of Korea
- Center for Epitaxial van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - JaeDong Lee
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
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Kim H, Kim JK, Kwon J, Kim J, Kim HWJ, Ha S, Kim K, Lee W, Kim J, Cho GY, Heo H, Jang J, Sahle CJ, Longo A, Strempfer J, Fabbris G, Choi Y, Haskel D, Kim J, Kim JW, Kim BJ. Quantum spin nematic phase in a square-lattice iridate. Nature 2024; 625:264-269. [PMID: 38093009 DOI: 10.1038/s41586-023-06829-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 11/03/2023] [Indexed: 01/12/2024]
Abstract
Spin nematic is a magnetic analogue of classical liquid crystals, a fourth state of matter exhibiting characteristics of both liquid and solid1,2. Particularly intriguing is a valence-bond spin nematic3-5, in which spins are quantum entangled to form a multipolar order without breaking time-reversal symmetry, but its unambiguous experimental realization remains elusive. Here we establish a spin nematic phase in the square-lattice iridate Sr2IrO4, which approximately realizes a pseudospin one-half Heisenberg antiferromagnet in the strong spin-orbit coupling limit6-9. Upon cooling, the transition into the spin nematic phase at TC ≈ 263 K is marked by a divergence in the static spin quadrupole susceptibility extracted from our Raman spectra and concomitant emergence of a collective mode associated with the spontaneous breaking of rotational symmetries. The quadrupolar order persists in the antiferromagnetic phase below TN ≈ 230 K and becomes directly observable through its interference with the antiferromagnetic order in resonant X-ray diffraction, which allows us to uniquely determine its spatial structure. Further, we find using resonant inelastic X-ray scattering a complete breakdown of coherent magnon excitations at short-wavelength scales, suggesting a many-body quantum entanglement in the antiferromagnetic state10,11. Taken together, our results reveal a quantum order underlying the Néel antiferromagnet that is widely believed to be intimately connected to the mechanism of high-temperature superconductivity12,13.
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Affiliation(s)
- Hoon Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Jin-Kwang Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Junyoung Kwon
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Jimin Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Hyun-Woo J Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Seunghyeok Ha
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Kwangrae Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Wonjun Lee
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Jonghwan Kim
- Center for Van der Waals Quantum Solids, Institute for Basic Science, Pohang, Korea
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Korea
| | - Gil Young Cho
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
| | - Hyeokjun Heo
- Department of Physics and Astronomy, Seoul National University, Seoul, South Korea
| | - Joonho Jang
- Department of Physics and Astronomy, Seoul National University, Seoul, South Korea
| | - C J Sahle
- ESRF, The European Synchrotron, Grenoble, France
| | - A Longo
- ESRF, The European Synchrotron, Grenoble, France
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, UOS Palermo, Palermo, Italy
| | - J Strempfer
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - G Fabbris
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - Y Choi
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - D Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - Jungho Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - J -W Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
| | - B J Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science, Pohang, South Korea.
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.
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Lee SJ, Han YJ, Kim M, Shim JY, Lee MY, Oh SY, Lee J, Kim SH, Cha DH, Cho GJ, Kwon HS, Kim BJ, Park MH, Cho HY, Ko HS, Bae JH, Park CW, Park JS, Jun JK, Oh S, Lee DR, Ryu HM, Lee SM. The Effect of Vanishing Twin on First- and Second-Trimester Maternal Serum Markers and Nuchal Translucency: A Multicenter Prospective Cohort Study. J Korean Med Sci 2023; 38:e300. [PMID: 37750371 PMCID: PMC10519777 DOI: 10.3346/jkms.2023.38.e300] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 05/30/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND The purpose of this study was to evaluate the effect of vanishing twin (VT) on maternal serum marker concentrations and nuchal translucency (NT). METHODS This is a secondary analysis of a multicenter prospective cohort study in 12 institutions. Serum concentrations of pregnancy-associated plasma protein-A in the first trimester and alpha-fetoprotein (AFP), total human chorionic gonadotrophin, unconjugated estriol, and inhibin A in the second trimester were measured, and NT was measured between 10 and 14 weeks of gestation. RESULTS Among 6,793 pregnant women, 5,381 women were measured for serum markers in the first or second trimester, including 65 cases in the VT group and 5,316 cases in the normal singleton group. The cases in the VT group had a higher median multiple of the median value of AFP and inhibin A than the normal singleton group. The values of other serum markers and NT were not different between the two groups. After the permutation test with adjustment, AFP and inhibin A remained significant differences. The frequency of abnormally increased AFP was also higher in the VT group than in the normal singleton group. CONCLUSION VT can be considered as an adjustment factor for risk assessment in the second-trimester serum screening test.
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Affiliation(s)
- Se Jin Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - You Jung Han
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Minhyoung Kim
- Department of Obstetrics and Gynecology, MizMedi Hospital, Seoul, Korea
| | - Jae-Yoon Shim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Mi-Young Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Soo-Young Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - JoonHo Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
| | - Soo Hyun Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Dong Hyun Cha
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea
| | - Han-Sung Kwon
- Department of Obstetrics and Gynecology, Konkuk University School of Medicine, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
| | - Hee Young Cho
- Department of Obstetrics and Gynecology, Bundang CHA Hospital, CHA University School of Medicine, Seongnam, Korea
| | - Hyun Sun Ko
- Department of Obstetrics and Gynecology, Catholic University of Korea College of Medicine, Seoul, Korea
| | - Ji Hye Bae
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Sohee Oh
- Medical Research Collaborating Center, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Da Rae Lee
- Department of Obstetrics and Gynecology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Hyun Mee Ryu
- Department of Obstetrics and Gynecology, Bundang CHA Hospital, CHA University School of Medicine, Seongnam, Korea.
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
- Innovative Medical Technology Research Institute, Seoul National University Hospital, Seoul, Korea.
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Lim HJ, Sun J, Min B, Song M, Kim TH, Kim BJ, Hwang KR, Lee TS, Jeon HW, Kim SM. Endometriosis and Adverse Pregnancy Outcomes: A Nationwide Population-Based Study. J Clin Med 2023; 12:5392. [PMID: 37629431 PMCID: PMC10455587 DOI: 10.3390/jcm12165392] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/12/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Endometriosis is a major cause of infertility, and considering its pathophysiology, it is expected to affect pregnancy outcomes as well. This study aimed to evaluate whether endometriosis is associated with adverse pregnancy outcomes after successful conception. Data from singleton pregnancy deliveries between January 2014 and October 2019 were obtained from the Korean Health Insurance Review and Assessment Service database. We compared the clinical characteristics and adverse pregnancy outcomes of women with and without endometriosis. A total of 1,251,597 pregnant women were enrolled; of these, 32,951 (2.6%) were assigned to the endometriosis group. Women with endometriosis had significantly more adverse pregnancy outcomes than those without endometriosis. Adverse pregnancy outcomes associated with endometriosis included preterm labor, preterm birth, preeclampsia, fetal growth restriction, placenta previa, placental abruption, antepartum and postpartum hemorrhage, and stillbirth. This study also showed an increased risk of postpartum hemorrhage, blood transfusion, uterine artery embolization, and cesarean hysterectomy in the endometriosis group compared to the non- endometriosis group. The cesarean delivery rate was significantly higher in the endometriosis group than in the non-endometriosis group, even after excluding cases of antenatal obstetric complications that could increase the risk of cesarean delivery. Women with endometriosis not only have difficulty conceiving, but also have a significantly higher risk of adverse pregnancy outcomes.
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Affiliation(s)
- Hee Jeung Lim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Jiyu Sun
- Integrated Biostatistics Branch, Division of Cancer Data Science, National Cancer Center, Goyang-si 10408, Republic of Korea;
| | - Banhyang Min
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Myungeun Song
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Tae Hun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Kyu Ri Hwang
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Taek Sang Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Hye Won Jeon
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; (H.J.L.); (B.M.); (M.S.); (T.H.K.); (B.J.K.); (K.R.H.); (T.S.L.); (H.W.J.)
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea
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Choi J, Park H, Chie EK, Choi SW, Lee HY, Yoo S, Kim BJ, Ryu B. Current Status and Key Issues of Data Management in Tertiary Hospitals: A Case Study of Seoul National University Hospital. Healthc Inform Res 2023; 29:209-217. [PMID: 37591676 PMCID: PMC10440204 DOI: 10.4258/hir.2023.29.3.209] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 08/19/2023] Open
Abstract
OBJECTIVES In the era of the Fourth Industrial Revolution, where an ecosystem is being developed to enhance the quality of healthcare services by applying information and communication technologies, systematic and sustainable data management is essential for medical institutions. In this study, we assessed the data management status and emerging concerns of three medical institutions, while also examining future directions for seamless data management. METHODS To evaluate the data management status, we examined data types, capacities, infrastructure, backup methods, and related organizations. We also discussed challenges, such as resource and infrastructure issues, problems related to government regulations, and considerations for future data management. RESULTS Hospitals are grappling with the increasing data storage space and a shortage of management personnel due to costs and project termination, which necessitates countermeasures and support. Data management regulations on the destruction or maintenance of medical records are needed, and institutional consideration for secondary utilization such as long-term treatment or research is required. Government-level guidelines for facilitating hospital data sharing and mobile patient services should be developed. Additionally, hospital executives at the organizational level need to make efforts to facilitate the clinical validation of artificial intelligence software. CONCLUSIONS This analysis of the current status and emerging issues of data management reveals potential solutions and sets the stage for future organizational and policy directions. If medical big data is systematically managed, accumulated over time, and strategically monetized, it has the potential to create new value.
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Affiliation(s)
- Jinwook Choi
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul,
Korea
| | - Hyeryun Park
- Interdisciplinary Program for Bioengineering, Graduate School, Seoul National University, Seoul,
Korea
| | - Eui Kyu Chie
- Office of Hospital Information, Seoul National University Hospital, Seoul,
Korea
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul,
Korea
| | - Sae Won Choi
- Office of Hospital Information, Seoul National University Hospital, Seoul,
Korea
| | - Ho-Young Lee
- Office of eHealth Research and Businesses, Seoul National University Bundang Hospital, Seongnam,
Korea
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Sooyoung Yoo
- Office of eHealth Research and Businesses, Seoul National University Bundang Hospital, Seongnam,
Korea
| | - Byoung Jae Kim
- Information Systems and Technology, Seoul Metropolitan Government-Seoul National University Hospital Boramae Medical Center, Seoul,
Korea
| | - Borim Ryu
- Center for Data Science, Biomedical Research Institute, Seoul Metropolitan Government-Seoul National University Hospital Boramae Medical Center, Seoul,
Korea
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Zhu K, Bala F, Zhang J, Benali F, Cimflova P, Kim BJ, McDonough R, Singh N, Hill MD, Goyal M, Demchuk A, Menon BK, Qiu W. Automated Segmentation of Intracranial Thrombus on NCCT and CTA in Patients with Acute Ischemic Stroke Using a Coarse-to-Fine Deep Learning Model. AJNR Am J Neuroradiol 2023; 44:641-648. [PMID: 37202113 PMCID: PMC10249699 DOI: 10.3174/ajnr.a7878] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 04/20/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND PURPOSE Identifying the presence and extent of intracranial thrombi is crucial in selecting patients with acute ischemic stroke for treatment. This article aims to develop an automated approach to quantify thrombus on NCCT and CTA in patients with stroke. MATERIALS AND METHODS A total of 499 patients with large-vessel occlusion from the Safety and Efficacy of Nerinetide in Subjects Undergoing Endovascular Thrombectomy for Stroke (ESCAPE-NA1) trial were included. All patients had thin-section NCCT and CTA images. Thrombi contoured manually were used as reference standard. A deep learning approach was developed to segment thrombi automatically. Of 499 patients, 263 and 66 patients were randomly selected to train and validate the deep learning model, respectively; the remaining 170 patients were independently used for testing. The deep learning model was quantitatively compared with the reference standard using the Dice coefficient and volumetric error. The proposed deep learning model was externally tested on 83 patients with and without large-vessel occlusion from another independent trial. RESULTS The developed deep learning approach obtained a Dice coefficient of 70.7% (interquartile range, 58.0%-77.8%) in the internal cohort. The predicted thrombi length and volume were correlated with those of expert-contoured thrombi (r = 0.88 and 0.87, respectively; P < .001). When the derived deep learning model was applied to the external data set, the model obtained similar results in patients with large-vessel occlusion regarding the Dice coefficient (66.8%; interquartile range, 58.5%-74.6%), thrombus length (r = 0.73), and volume (r = 0.80). The model also obtained a sensitivity of 94.12% (32/34) and a specificity of 97.96% (48/49) in classifying large-vessel occlusion versus non-large-vessel occlusion. CONCLUSIONS The proposed deep learning method can reliably detect and measure thrombi on NCCT and CTA in patients with acute ischemic stroke.
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Affiliation(s)
- K Zhu
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- College of Electronic Engineering (K.Z.), Xi'an Shiyou University, Xi'an, Shaanxi, China
| | - F Bala
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - J Zhang
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - F Benali
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - P Cimflova
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- St. Anne's University Hospital Brno and Faculty of Medicine (P.C.), Masaryk University, Brno, Czech Republic
| | - B J Kim
- Department of Neurology and Cerebrovascular Center (B.J.K.), Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Korea
| | - R McDonough
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Diagnostic and Interventional Neuroradiology (R.M.), University Hospital Hamburg, Hamburg, Germany
| | - N Singh
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - M D Hill
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Community Health Sciences (M.D.H.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - M Goyal
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - A Demchuk
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
- Department of Medicine, and Department of Radiology (P.C., M.D.H., A.D.), Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - B K Menon
- From the Department of Clinical Neurosciences and Hotchkiss Brain Institute (K.Z., F. Bala, J.Z., F. Benali, P.C., R.M., N.S., M.D.H., M.G., A.D., B.K.M.)
| | - W Qiu
- School of Life Science and Technology (W.Q.), Huazhong University of Science and Technology, Wuhan, Hubei, China
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Kim JK, Dietl C, Kim HWJ, Ha SH, Kim J, Said AH, Kim J, Kim BJ. Resonant inelastic X-ray scattering endstation at the 1C beamline of Pohang Light Source II. J Synchrotron Radiat 2023; 30:643-649. [PMID: 36947164 PMCID: PMC10161893 DOI: 10.1107/s1600577523001625] [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] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 02/22/2023] [Indexed: 05/06/2023]
Abstract
An endstation for resonant inelastic X-ray scattering (RIXS), dedicated to operations in the hard X-ray regime, has been constructed at the 1C beamline of Pohang Light Source II. At the Ir L3-edge, a total energy resolution of 34.2 meV was achieved, close to the theoretical estimation of 34.0 meV, which considers factors such as the incident energy bandpass, intrinsic analyzer resolution, geometrical broadening of the spectrometer, finite beam-size effect and Johann aberration. The performance of the RIXS instrument is demonstrated by measuring the RIXS spectra of Sr2IrO4. The endstation can be easily reconfigured to measure energy-integrated intensities with very low background for diffuse scattering and diffraction experiments.
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Affiliation(s)
- Jin Kwang Kim
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Christopher Dietl
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
| | - Hyun Woo J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Seung Hyeok Ha
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Jimin Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
| | - Ayman H Said
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Jungho Kim
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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Bala F, Kim BJ, Najm M, Thornton J, Fainardi E, Michel P, Alpay K, Herlihy D, Goyal M, Casetta I, Nannoni S, Ylikotila P, Power S, Saia V, Hegarty A, Pracucci G, Rautio R, Ademola A, Demchuk A, Mangiafico S, Boyle K, Hill MD, Toni D, Murphy S, Menon BK, Almekhlafi MA. Outcomes with Endovascular Treatment of Patients with M2 Segment MCA Occlusion in the Late Time Window. AJNR Am J Neuroradiol 2023; 44:447-452. [PMID: 36958801 PMCID: PMC10084904 DOI: 10.3174/ajnr.a7833] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/23/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND AND PURPOSE Randomized trials in the late window have demonstrated the efficacy and safety of endovascular thrombectomy in large-vessel occlusions. Patients with M2-segment MCA occlusions were excluded from these trials. We compared outcomes with endovascular thrombectomy in patients with M2-versus-M1 occlusions presenting 6-24 hours after symptom onset. MATERIALS AND METHODS Analyses were on pooled data from studies enrolling patients with stroke treated with endovascular thrombectomy 6-24 hours after symptom onset. We compared 90-day functional independence (mRS ≤ 2), mortality, symptomatic intracranial hemorrhage, and successful reperfusion (expanded TICI = 2b-3) between patients with M2 and M1 occlusions. The benefit of successful reperfusion was then assessed among patients with M2 occlusion. RESULTS Of 461 patients, 367 (79.6%) had M1 occlusions and 94 (20.4%) had M2 occlusions. Patients with M2 occlusions were older and had lower median baseline NIHSS scores. Patients with M2 occlusion were more likely to achieve 90-day functional independence than those with M1 occlusion (adjusted OR = 2.13; 95% CI, 1.25-3.65). There were no significant differences in the proportion of successful reperfusion (82.9% versus 81.1%) or mortality (11.2% versus 17.2%). Symptomatic intracranial hemorrhage risk was lower in patients with M2-versus-M1 occlusions (4.3% versus 12.2%, P = .03). Successful reperfusion was independently associated with functional independence among patients with M2 occlusions (adjusted OR = 2.84; 95% CI, 1.11-7.29). CONCLUSIONS In the late time window, patients with M2 occlusions treated with endovascular thrombectomy achieved better clinical outcomes, similar reperfusion, and lower symptomatic intracranial hemorrhage rates compared with patients with M1 occlusion. These results support the safety and benefit of endovascular thrombectomy in patients with M2 occlusions in the late window.
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Affiliation(s)
- F Bala
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
- Diagnostic and Interventional Neuroradiology Department (F.B.), University Hospital of Tours, Tours, France
| | - B J Kim
- Department of Neurology and Cerebrovascular Center (B.J.K.), Seoul National University Bundang Hospital, Seoul, Republic of Korea
| | - M Najm
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
| | - J Thornton
- Neuroradiology Department (J.T., D.H., S.P.)
- Royal College of Surgeons in Ireland (J.T., A.H.), Dublin, Ireland
| | - E Fainardi
- Neuroradiology Unit (E.F.), Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - P Michel
- Stroke Center (P.M., S.N.), Neurology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - K Alpay
- Department of Radiology (K.A., R.R.), Turku University Hospital, Turku, Finland
| | - D Herlihy
- Neuroradiology Department (J.T., D.H., S.P.)
| | - M Goyal
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
| | - I Casetta
- Clinica Neurologica (I.C.), University of Ferrara, Ferrara, Italy
| | - S Nannoni
- Stroke Center (P.M., S.N.), Neurology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - P Ylikotila
- Neurocenter (P.Y.), Turku University Hospital, University of Turku, Turku, Finland
| | - S Power
- Neuroradiology Department (J.T., D.H., S.P.)
| | - V Saia
- Stroke Unit (V.S.), Santa Corona Hospital, Pietra Ligure, Italy
| | - A Hegarty
- Royal College of Surgeons in Ireland (J.T., A.H.), Dublin, Ireland
| | - G Pracucci
- Stroke Unit (G.P.), Careggi University Hospital, Florence, Italy
| | - R Rautio
- Department of Radiology (K.A., R.R.), Turku University Hospital, Turku, Finland
| | - A Ademola
- Department of Community Health Sciences (A.A., M.D.H., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - A Demchuk
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
| | - S Mangiafico
- Interventional Neuroradiology Unit (S. Mangiafico), Institute for Hospitalization and Healthcare Neuromed, Pozzilli, Italy
| | - K Boyle
- Department of Geriatric and Stroke Medicine (K.B.), Beaumont Hospital, Dublin, Ireland
| | - M D Hill
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences (A.A., M.D.H., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - D Toni
- Emergency Department (D.T.), Stroke Unit, Sapienza University Hospital, Rome, Italy
| | - S Murphy
- Department of Geriatric and Stroke Medicine (S. Murphy), The Mater Misericordiae University Hospital, Dublin, Ireland
- School of Medicine (S. Murphy), Royal College of Surgeons in Ireland, Dublin, Ireland
- School of Medicine (S. Murphy), University College Dublin, Dublin, Ireland
| | - B K Menon
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences (A.A., M.D.H., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - M A Almekhlafi
- From the Calgary Stroke Program (F.B., M.N., M.G., A.D., M.D.H., B.K.M., M.A.A.), Departments of Clinical Neurosciences and Radiology, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences (A.A., M.D.H., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
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Nguyen VT, Kim H, Kim BJ. Numerical investigation on ballooning and rupture of a Zircaloy tube subjected to high internal pressure and film boiling conditions. Nuclear Engineering and Technology 2023. [DOI: 10.1016/j.net.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Jung YM, Lee SM, Kim SY, Chung JH, Won HS, Lee KA, Park MH, Cho GJ, Oh MJ, Choi ES, Ahn KH, Hong SC, Sung JH, Roh CR, Kim SM, Kim BJ, Kim HJ, Oh KJ, Hong S, Park IY, Park JS. The Skin Antiseptic agents at Vaginal dElivery (SAVE) trial: study protocol for a randomized controlled trial. Trials 2023; 24:130. [PMID: 36810189 PMCID: PMC9942633 DOI: 10.1186/s13063-023-07101-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/18/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Cleansing of the vulva and perineum is recommended during preparation for vaginal delivery, and special attention is paid to cleansing before episiotomy because episiotomy is known to increase the risk of perineal wound infection and/or dehiscence. However, the optimal method of perineal cleansing has not been established, including the choice of antiseptic agent. To address this issue, we designed a randomized controlled trial to examine whether skin preparation with chlorhexidine-alcohol is superior to povidone-iodine for the prevention of perineal wound infection after vaginal delivery. METHODS In this multicenter randomized controlled trial, term pregnant women who plan to deliver vaginally after episiotomy will be enrolled. The participants will be randomly assigned to use antiseptic agents for perineal cleansing (povidone-iodine or chlorhexidine-alcohol). The primary outcome is superficial or deep perineal wound infection within 30 days after vaginal delivery. The secondary outcomes are the length of hospital stay, physician office visits, or hospital readmission for infection-related complications, endometritis, skin irritations, and allergic reactions. DISCUSSION This study will be the first randomized controlled trial aiming to determine the optimal antiseptic agent for the prevention of perineal wound infections after vaginal delivery. TRIAL REGISTRATION ClinicalTrials.gov NCT05122169. First submitted date on 8 November 2021. First posted date on 16 November 2021.
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Affiliation(s)
- Young Mi Jung
- grid.31501.360000 0004 0470 5905Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080 South Korea
| | - Seung Mi Lee
- grid.31501.360000 0004 0470 5905Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080 South Korea
| | - So Yeon Kim
- grid.413967.e0000 0001 0842 2126Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Jin Hoon Chung
- grid.413967.e0000 0001 0842 2126Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Hye-Sung Won
- grid.413967.e0000 0001 0842 2126Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Kyung A Lee
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Mi Hye Park
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Geum Joon Cho
- grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Guro Hospital, College of Medicine, Korea University, Seoul, South Korea ,grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, South Korea
| | - Min-Jeong Oh
- grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Guro Hospital, College of Medicine, Korea University, Seoul, South Korea ,grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, South Korea
| | - Eun Saem Choi
- grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, South Korea ,grid.411134.20000 0004 0474 0479Department of Obstetrics and Gynecology, Korea University Anam Hospital, Seoul, South Korea
| | - Ki Hoon Ahn
- grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, South Korea ,grid.411134.20000 0004 0474 0479Department of Obstetrics and Gynecology, Korea University Anam Hospital, Seoul, South Korea
| | - Soon-Cheol Hong
- grid.222754.40000 0001 0840 2678Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, South Korea ,grid.411134.20000 0004 0474 0479Department of Obstetrics and Gynecology, Korea University Anam Hospital, Seoul, South Korea
| | - Ji-Hee Sung
- grid.264381.a0000 0001 2181 989XDepartment of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Cheong-Rae Roh
- grid.264381.a0000 0001 2181 989XDepartment of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sun Min Kim
- grid.412479.dDepartment of Obstetrics and Gynecology, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, South Korea
| | - Byoung Jae Kim
- grid.412479.dDepartment of Obstetrics and Gynecology, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, South Korea
| | - Hyeon Ji Kim
- grid.412480.b0000 0004 0647 3378Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do South Korea
| | - Kyung Joon Oh
- grid.31501.360000 0004 0470 5905Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080 South Korea ,grid.412480.b0000 0004 0647 3378Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do South Korea
| | - Subeen Hong
- grid.411947.e0000 0004 0470 4224Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - In Yang Park
- grid.411947.e0000 0004 0470 4224Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
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Bae JH, Ryu JC, Ha SH, Kim BJ, Kang DW, Kwon SU, Kim JS, Chang JY. Association of Left Vertebral Artery Hypoplasia with Posterior Circulation Stroke and the Functional Outcome of Patients with Atrial Fibrillation-Related Cardioembolic Stroke. AJNR Am J Neuroradiol 2023; 44:65-69. [PMID: 36521964 PMCID: PMC9835927 DOI: 10.3174/ajnr.a7738] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 11/11/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND PURPOSE A cardiogenic embolus could reach the posterior circulation through the right vertebral artery because of a relatively larger diameter in cases of left vertebral artery hypoplasia. Hence, we investigated whether left vertebral artery hypoplasia is associated with cardiac embolisms with atrial fibrillation in the posterior circulation and its functional outcomes. MATERIALS AND METHODS In this monocentric retrospective study, patients with acute cardioembolic stroke with atrial fibrillation were enrolled and underwent CT or neck MRA, which visualized the aortic arch and subclavian arteries. The laterality and size of vertebral artery hypoplasia were recorded. Posterior circulation stroke, basilar artery occlusion, and the functional outcomes after 3 months were investigated. RESULTS This study included 407 patients; the patients with left vertebral artery hypoplasia experienced a higher rate of posterior circulation stroke (19 versus 73; 42.2% versus 20.2%; P = .001) and basilar artery occlusion (5 versus 10; 11.1% versus 2.8%; P = .005) than the patients without left vertebral artery hypoplasia. Multivariate analysis revealed that left vertebral artery hypoplasia showed an association with lower odds of achieving a good functional outcome 3 months after the stroke (OR = 0.4; 95% CI, 0.2-0.9; P = .027). CONCLUSIONS Patients with cardioembolic stroke and left vertebral artery hypoplasia had posterior circulation stroke, basilar artery occlusion, and poor functional outcomes after 3 months.
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Affiliation(s)
- J-H Bae
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - J-C Ryu
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - S H Ha
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - B J Kim
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - D-W Kang
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - S U Kwon
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - J-S Kim
- Department of Neurology (J.-S.K.), Gangneung Asan Hospital, Gangneung, Korea
| | - J Y Chang
- From the Department of Neurology (J.-H.B., J.-C.R., S.H.H., B.J.K., D.-W.K., S.U.K., J.Y.C.), Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
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Kim SM, MIN B, Kim W, Kim BJ. The risk factors and causes of spontaneous preterm birth in women with previous term delivery. Am J Obstet Gynecol 2023. [DOI: 10.1016/j.ajog.2022.11.1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Choe SA, Lee SM, Han YJ, Kim MH, Shim JY, Lee MY, Oh SY, Lee JH, Kim SH, Cha DH, Cho GJ, Kwon HS, Kim BJ, Park MH, Cho HY, Ko HS, Lim JH, Ryu HM. Chromosomal Abnormality, fetal/neonatal Death and Socioeconomic Status: A Prospective Cohort Study. Matern Child Health J 2023; 27:111-116. [PMID: 36352289 DOI: 10.1007/s10995-022-03542-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2022] [Indexed: 11/10/2022]
Abstract
OBJECTIVES To assess the risk gradient of chromosomal abnormalities and fetal or neonatal death across a socioeconomic spectrum of pregnant women. METHODS We used the data from the Korean Prenatal Diagnosis Study (KPDS), which included singleton pregnancies who were candidates for fetal aneuploidy screening enrolled from the Seoul Capital Area from December 2016 to April 2018. We analyzed chromosomal abnormalities which were diagnosed pre- or postnatally, and fetal or neonatal death. The highest level of education among the women and the average monthly household income were used as proxies for socioeconomic status. RESULTS Among the 6,715 women, the majority of were 30-39 years old and university graduates, with a reported household income higher than the national median. Chromosomal abnormalities occurred in 45 women (6.7 per 1,000). Fetal or neonatal death occurred in 70 (11.3 per 1,000), excluding pregnancies affected by chromosomal abnormality diagnosis. The adjusted odds ratio for chromosomal abnormalities was higher when household income was < 4,484 USD per month. For fetal or neonatal death, the risk estimates for lower education and lower household income were generally positive but remained imprecise. CONCLUSION We observed some evidence of an inverse association between the risk of fetal chromosomal abnormality and level of household income in a prospective cohort of pregnant women. Interventions to reduce socioeconomic disparities in perinatal health should focus on those with a low household income.
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Affiliation(s)
- Seung-Ah Choe
- Department of Preventive Medicine, Korea University, Seoul, Republic of Korea
| | - Seung Mi Lee
- Department of Obstetrics & Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - You Jung Han
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Republic of Korea
| | - Min Hyoung Kim
- Department of Obstetrics and Gynecology, MizMedi Hospital, Seoul, Republic of Korea
| | - Jae-Yoon Shim
- Mirae & Heemang Obstetrics and Gynecology Clinic, Seoul, Republic of Korea
| | - Mi-Young Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Soo-Young Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joon Ho Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
| | - Soo Hyun Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Republic of Korea
| | - Dong Hyun Cha
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Republic of Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University, Seoul, Republic of Korea
| | - Han-Sung Kwon
- Department of Obstetrics and Gynecology, Konkuk University School of Medicine, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics & Gynecology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
| | - Hee Young Cho
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Republic of Korea
| | - Hyun Sun Ko
- Department of Obstetrics and Gynecology, Catholic University of Korea College of Medicine, Seoul, Korea
| | - Ji Hyae Lim
- Center for Prenatal Biomarker Research, CHA Advanced Research Institute, CHA Bundang Medical Center, Seongnam, Republic of Korea
| | - Hyun Mee Ryu
- Center for Prenatal Biomarker Research, CHA Advanced Research Institute, CHA Bundang Medical Center, Seongnam, Republic of Korea. .,Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea.
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15
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Lee SM, Jung YM, Choi ES, Kwak SH, Koo JN, Oh IH, Kim BJ, Kim SM, Kim SY, Kim GM, Joo SK, Koo BK, Shin S, Norwitz ER, Park CW, Jun JK, Kim W, Park JS. Metabolic Dysfunction-Associated Fatty Liver Disease and Subsequent Development of Adverse Pregnancy Outcomes. Clin Gastroenterol Hepatol 2022; 20:2542-2550.e8. [PMID: 34798335 DOI: 10.1016/j.cgh.2021.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/28/2021] [Accepted: 11/10/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Recently, metabolic dysfunction-associated fatty liver disease (MAFLD), rather than nonalcoholic fatty liver disease (NAFLD), was proposed to better describe liver disease associated with metabolic dysfunction (MD). In this study, we attempted to investigate the impact of MAFLD on pregnancy complications. METHODS The current study is a secondary analysis of a multicenter prospective cohort designed to examine the risk of NAFLD during pregnancy. In the first trimester, enrolled pregnant women were evaluated for hepatic steatosis by liver ultrasonography, and blood samples were collected for biochemical measurements. The study population was divided into 3 groups: no NAFLD, hepatic steatosis but without metabolic dysfunction (non-MD NAFLD), and MAFLD. The primary outcome was the subsequent development of adverse pregnancy outcomes, including gestational diabetes mellitus, pregnancy-associated hypertension, preterm birth, and fetal growth abnormalities. RESULTS The study population consisted of 1744 pregnant women, including 1523 with no NAFLD, 43 with non-MD NAFLD, and 178 with MAFLD. The risk of subsequent development of adverse pregnancy outcomes was higher in MAFLD than in non-MD NAFLD (adjusted odds ratio, 4.03; 95% CI, 1.68-9.67), whereas the risk was not significantly different between no NAFLD and non-MD NAFLD. Among women with no NAFLD, the presence of MD increased the risk of adverse pregnancy outcomes. However, women with MAFLD were at higher risk for adverse pregnancy outcomes than women with no NAFLD without MD or those with no NAFLD with MD. CONCLUSIONS In pregnant women, MAFLD may be associated with an increased risk of subsequent adverse pregnancy outcomes.
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Affiliation(s)
- Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Young Mi Jung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Eun Saem Choi
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Soo Heon Kwak
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea
| | | | | | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea
| | - Sang Youn Kim
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Gyoung Min Kim
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - Sae Kyung Joo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea
| | - Bo Kyung Koo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea
| | - Errol R Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, Massachusetts
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Seoul, Korea.
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
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16
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Kim DY, Baik SH, Jung C, Kim JY, Han SG, Kim BJ, Kang J, Bae HJ, Kim JH. Predictors and Impact of Sulcal SAH after Mechanical Thrombectomy in Patients with Isolated M2 Occlusion. AJNR Am J Neuroradiol 2022; 43:1292-1298. [PMID: 35902120 PMCID: PMC9451639 DOI: 10.3174/ajnr.a7594] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/17/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND PURPOSE Data on SAH after M2 mechanical thrombectomy are limited. We aimed to determine the prevalence of sulcal SAH after mechanical thrombectomy for M2 occlusion, its associated predictors, and the resulting clinical outcome. MATERIALS AND METHODS The study retrospectively reviewed the data of patients with acute ischemic stroke who underwent mechanical thrombectomy for isolated M2 occlusion. The patients were divided into 2 groups according to the presence of sulcal SAH after M2 mechanical thrombectomy. Angiographic and clinical outcomes were compared. Multivariable analysis was performed to identify independent predictors of sulcal SAH and unfavorable outcome (90-day mRS, 3-6). RESULTS Of the 209 enrolled patients, sulcal SAH was observed in 33 (15.8%) patients. The sulcal SAH group showed a higher rate of distal M2 occlusion (69.7% versus 22.7%), a higher of rate of superior division occlusion (63.6% versus 43.8%), and a higher M2 angulation (median, 128° versus 106°) than the non-sulcal SAH group. Of the 33 sulcal SAH cases, 23 (66.7%) were covert without visible intraprocedural contrast extravasation. Distal M2 occlusion (OR, 12.04; 95% CI, 4.56-35.67; P < .001), superior division (OR, 3.83; 95% CI, 1.43-11.26; P = .010), M2 angulation (OR, 1.02; 95% CI, 1.01-1.04; P < .001), and the number of passes (OR, 1.58; 95% CI, 1.22-2.09; P < .001) were independent predictors of sulcal SAH. However, covert sulcal SAH was not associated with an unfavorable outcome (P = .830). CONCLUSIONS After mechanical thrombectomy for M2 occlusion, sulcal SAH was not uncommon and occurred more frequently with distal M2 occlusion, superior division, acute M2 angulation, and multiple thrombectomy passes (≥3). The impact of covert sulcal SAH was mostly benign and was not associated with an unfavorable outcome.
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Affiliation(s)
- D Y Kim
- From the Departments of Radiology (D.Y.K., S.H.B., C.J., J.H.K.)
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - S H Baik
- From the Departments of Radiology (D.Y.K., S.H.B., C.J., J.H.K.)
| | - C Jung
- From the Departments of Radiology (D.Y.K., S.H.B., C.J., J.H.K.)
| | - J Y Kim
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - S-G Han
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - B J Kim
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - J Kang
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - H-J Bae
- Neurology (D.Y.K, J.Y.K, S.-G.H., B.J.K, J.K., H-.J.B), Seoul National University Bundang Hospital, Seongnam, South Korea
| | - J H Kim
- From the Departments of Radiology (D.Y.K., S.H.B., C.J., J.H.K.)
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17
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Wie JH, Han YJ, Kim SH, Kim MY, Cho HY, Lee MY, Chung JH, Lee SM, Oh SY, Lee JH, Boo HY, Cho GJ, Kwon HS, Kim BJ, Park MH, Ryu HM, Ko HS. Prenatal Diagnosis of Congenital Heart Diseases and Associations with Serum Biomarkers of Aneuploidy: A Multicenter Prospective Cohort Study. Yonsei Med J 2022; 63:735-743. [PMID: 35914755 PMCID: PMC9344277 DOI: 10.3349/ymj.2022.63.8.735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/09/2022] [Accepted: 05/30/2022] [Indexed: 12/02/2022] Open
Abstract
PURPOSE We assessed prenatal detection rates of congenital heart disease (CHD) and associations between maternal serum biomarkers and non-chromosomal CHD in singleton pregnancies. MATERIALS AND METHODS This study was conducted as a secondary analysis of data obtained during a multicenter prospective cohort study that investigated the cost-effectiveness of prenatal testing for fetal aneuploidy. We analyzed the prenatal detection rate and accuracy for CHD screening via ultrasound during the second trimester, as well as associations between serum biomarkers and CHDs, in singleton newborns without chromosomal abnormalities. RESULTS Among 6715 women, 142 (2.1%) newborns were born with CHDs, of which 67 (1.0%) newborns had major CHDs. The prenatal detection rate for all CHDs and major CHDs were 34.5% and 58.2%, respectively. After excluding isolated ventricular septal defects, the detection rate for critical CHDs was 85.9%. Women with low pregnancy-associated plasma protein A (PAPP-A) (<0.4 multiples of the median, MOM) face increased risks of non-chromosomal CHDs [adjusted odds ratio (aOR) 2.76; 95% confidence interval (CI) 1.36-5.13] and major CHDs (aOR 7.30; 95% CI 3.18-15.59), compared to those without CHDs. A higher inhibin A level (≥2.5 MOM; aOR 4.84; 95% CI 1.42-12.46) was associated with non-chromosomal major CHDs. CONCLUSION Ultrasonography performed during the second trimester by obstetricians detected over 85% of critical CHDs. Low maternal serum PAPP-A or high inhibin-A was associated with non-chromosomal CHDs. These results may contribute to an improvement in prenatal diagnosis of CHDs.
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Affiliation(s)
- Jeong Ha Wie
- Department of Obstetrics and Gynecology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - You Jung Han
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Soo Hyun Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Moon Young Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Hee Young Cho
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Mi-Young Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jin Hoon Chung
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Soo-Young Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joon Ho Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea
| | - Hye Yeon Boo
- Department of Obstetrics and Gynecology, CHA Ilsan Medical Center, CHA University School of Medicine, Goyang, Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea
| | - Han-Sung Kwon
- Department of Obstetrics and Gynecology, Konkuk University School of Medicine, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
| | - Hyun Mee Ryu
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
| | - Hyun Sun Ko
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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18
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Choi T, Zhang Z, Kim H, Park S, Kim JW, Lee KJ, Islam Z, Welp U, Chang SH, Kim BJ. Nanoscale Antiferromagnetic Domain Imaging using Full-Field Resonant X-ray Magnetic Diffraction Microscopy. Adv Mater 2022; 34:e2200639. [PMID: 35580279 DOI: 10.1002/adma.202200639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/12/2022] [Indexed: 06/15/2023]
Abstract
The physical properties of magnetic materials frequently depend not only on the microscopic spin and electronic structures, but also on the structures of mesoscopic length scales that emerge, for instance, from domain formations, or chemical and/or electronic phase separations. However, experimental access to such mesoscopic structures is currently limited, especially for antiferromagnets with net zero magnetization. Here, full-field microscopy and resonant magnetic X-ray diffraction are combined to visualize antiferromagnetic (AF) domains of the spin-orbit Mott insulator Sr2 IrO4 with area over ≈0.1 mm2 and with spatial resolution as high as ≈150 nm. With the unprecedented wide field of views and high spatial resolution, an intertwining of two AF domains on a length comparable to the measured average AF domain wall width of 545 nm is revealed. This mesoscopic structure comprises a substantial portion of the sample surface, and thus can result in a macroscopic response unexpected from its microscopic magnetic structure. In particular, the symmetry analysis presented in this work shows that the inversion symmetry, which is preserved by the microscopic AF order, becomes ill-defined at the mesoscopic length scale. This result underscores the importance of this novel technique for a thorough understanding of the physical properties of antiferromagnets.
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Affiliation(s)
- Taeyang Choi
- Department of Physics, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Zhan Zhang
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Hoon Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang, 37673, Republic of Korea
| | - Sunwook Park
- Department of Physics, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang, 37673, Republic of Korea
| | - Jong-Woo Kim
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Kyeong Jun Lee
- Department of Physics, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Zahir Islam
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Ulrich Welp
- Materials Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Seo Hyoung Chang
- Department of Physics, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang, 37673, Republic of Korea
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19
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Jo SB, Han YJ, Kim SH, Shim JY, Oh SY, Cho GJ, Kwon HS, Kim BJ, Park MH, Cho HY, Ko HS, Ryu HM, Lee SM, Ji JUNG Y, Kwon HY, Kown JY, Kim YH, Lee J. Association between low fetal fraction of cell free DNA and adverse pregnancy outcomes. Am J Obstet Gynecol 2022. [DOI: 10.1016/j.ajog.2021.11.1073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Kim SY, Oh SY, Sung JH, Choi SJ, Roh CR, Lee SM, Jun JK, Lee MY, Lee J, Kim SH, Cha DH, Han YJ, Kim MH, Cho GJ, Kwon HS, Kim BJ, Park MH, Cho HY, Ko HS, Shim JY, Ryu HM. Validation of a Strict Obesity Definition Proposed for Asians to Predict Adverse Pregnancy Outcomes in Korean Pregnant Women. J Korean Med Sci 2021; 36:e281. [PMID: 34783214 PMCID: PMC8593408 DOI: 10.3346/jkms.2021.36.e281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/16/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND People are generally considered overweight and obese if their body mass index (BMI) is above 25 kg/m² and 30.0 kg/m², respectively. The World Health Organization proposed stricter criteria for Asians (≥ 23 kg/m²: overweight, ≥ 25 kg/m²: obese). We aimed to verify whether this criteria could predict adverse pregnancy outcomes in Korean women. METHODS We included 7,547 Korean women from 12 institutions enrolled between June 2016 and October 2018. Women with no pre-pregnancy BMI data, not Korean, or lost to follow-up were excluded, leaving 6,331. The subjects were categorized into underweight, normal, overweight, class I obesity, and class II/III obesity based on a pre-pregnancy BMI of < 18.5, 18.5-22.9, 23.0-24.9, 25.0-29.9, and ≥ 30.0 kg/m², respectively. RESULTS Overall, 13.4%, 63.0%, 11.8%, 9.1%, and 2.6% of women were underweight, normal, and overweight and had class I obesity and class II/III obesity, respectively. In the multivariable analysis adjusted for maternal age, a higher BMI significantly increased the risk of preeclampsia, gestational diabetes, preterm delivery caused by maternal-fetal indications, cesarean section, large for gestational age, and neonatal intensive care unit admission. CONCLUSION Adverse pregnancy outcomes started to increase in those with a pre-pregnancy BMI ≥ 23.0 kg/m² after adjusting for maternal age. The modified obesity criteria could help predict adverse pregnancy outcomes in Koreans.
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Affiliation(s)
- Seo-Yeon Kim
- Department of Obstetrics and Gynecology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo-Young Oh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Ji-Hee Sung
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Suk-Joo Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Cheong-Rae Roh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Mi-Young Lee
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - JoonHo Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Korea
| | - Soo Hyun Kim
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Dong Hyun Cha
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - You Jung Han
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | | | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Han-Sung Kwon
- Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
| | - Hee Young Cho
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Hyun Sun Ko
- Department of Obstetrics and Gynecology, Catholic University of Korea College of Medicine, Seoul, Korea
| | - Jae-Yoon Shim
- Mirae and Heemang Obstetrics and Gynecology Clinic, Seoul, Korea
| | - Hyun Mee Ryu
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
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21
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Kim SY, Lee SM, Kwon GE, Kim BJ, Koo JN, Oh IH, Kim SM, Shin S, Kim W, Joo SK, Norwitz ER, Jung YM, Park CW, Jun JK, Choi MH, Park JS. Maternal dyslipidemia and altered cholesterol metabolism in early pregnancy as a risk factor for small for gestational age neonates. Sci Rep 2021; 11:21066. [PMID: 34702839 PMCID: PMC8548295 DOI: 10.1038/s41598-021-00270-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 09/24/2021] [Indexed: 12/12/2022] Open
Abstract
We evaluated the relationship between maternal cholesterol levels and its biologically active precursors and metabolites in the first trimester and subsequent risk for small-for-gestational-age birthweight (SGA). This is a secondary analysis of a prospective cohort study which enrolled healthy singleton pregnancies (n = 1337). Maternal fasting blood was taken in the first trimester and followed up till delivery. The lipid parameters were compared between women who delivered SGA neonates (SGA-group, birthweight < 10th percentile, n = 107) and women who did not (non-SGA-group, n = 1230). In addition, metabolic signatures of cholesterol were evaluated in a subset consisting of propensity-score matched SGA (n = 56) and control group (n = 56). Among lipid parameters, maternal high-density lipoprotein cholesterol (HDL-C) levels were significantly lower in SGA-group than in non-SGA-group (p = 0.022). The risk for SGA was negatively correlated with maternal serum HDL-C quartiles (p = 0.003), and this association remained significant after adjustment for confounding variables. In metabolic signatures of cholesterol, the cholesterol/lathosterol ratio in SGA-group was significantly higher than non-SGA-group [(2.7 (1.6-3.7) vs. 2.1 (1.5-2.9), respectively; p = 0.034)], suggesting increased endogenous cholesterol biosynthesis. We demonstrated that dyslipidemia and increased cholesterol biosynthesis led to delivery of SGA neonates even in early pregnancy.
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Affiliation(s)
- So Yeon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.,Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Go Eun Kwon
- Molecular Recognition Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul, 02792, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | | | | | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sae Kyung Joo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Errol R Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, MA, USA
| | - Young Mi Jung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea
| | - Man Ho Choi
- Molecular Recognition Research Center, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seoul, 02792, Korea.
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Korea.
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22
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Singh N, Bala F, Kim BJ, Najm M, Ahn SH, Fainardi E, Rubiera M, Khaw AV, Zini A, Goyal M, Menon BK, Almekhlafi M. Time-resolved assessment of cortical venous drainage on multiphase CT angiography in patients with acute ischemic stroke. Neuroradiology 2021; 64:897-903. [PMID: 34704112 DOI: 10.1007/s00234-021-02837-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/13/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Cortical vein opacification is not routinely assessed in patients presenting with acute ischemic stroke (AIS), and the value of temporal assessment of venous outflow is not known. We evaluated the utility of assessing cortical venous drainage over time using multiphase CT angiography (mCTA). METHODS Cortical venous drainage was assessed in patients from the Precise and Rapid Assessment of Collaterals Using Multi-Phase CTA in the Triage of Patients With Acute Ischemic Stroke for IA Therapy prospective multicenter cohort study of patients with symptoms of AIS with ICA and/or middle cerebral artery occlusion on baseline mCTA. Opacification of vein of Labbe, sphenoparietal sinus, superficial middle cerebral vein, and vein of Trolard of the affected hemisphere was graded as no (0), partial (1), or full (2) opacification in each mCTA phase. The venous opacification scores for each phase were added to generate a total venous score (TVS) (range 0-24). Primary outcome was 90-day modified Rankin score. Repeated measures analysis was used to assess the effect of phase timing on venous score on outcome. RESULTS Of 432 patients, 284 (65.7%) had proximal arterial occlusions. Median venous opacification score per phase (range 0-8) was 3 (IQR 1-6) in the first phase and increased in the second and third phases [median (IQR): 6 (5-8) and 8 (6-8), respectively] of the mCTA. In a multivariable analysis adjusting for age, baseline National Institutes of Health Stroke Scale, and Alberta stroke program early CT score, a significant association between TVS and 90-day mRS was noted ([adjusted cOR for TVS 6-11: 0.16 (95% CI 0.05-0.51); TVS 12-17: 0.18 (95% CI 0.06-0.57); TVS 18-24: 0.20 (0.06-0.63)]. Repeated measures analysis of venous scores from all three phases showed a significant effect of time/phase on TVS (p < 0.001). CONCLUSION This study concludes that venous opacification over time on multiphase CTA is associated with 90-day clinical outcome. There was however no added benefit of venous scoring vis-a-vis arterial collateral assessment in predicting outcome.
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Affiliation(s)
- Nishita Singh
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada.
| | - Fouzi Bala
- Department of Radiology, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada
| | - B J Kim
- Department of Neurology and Cerebrovascular Center, Seoul National University Bundang Hospital, Seongnamsi, Gyeonggi-do, Republic of Korea
| | - Mohamed Najm
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada
| | - Seong Hwan Ahn
- Department of Neurology, Chosun University Hospital, Gwangju, Republic of Korea
| | - Enrico Fainardi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Marta Rubiera
- Stroke Unit, Department of Neurology, Vall d'Hebron University Hospital, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Alexander V Khaw
- Department of Clinical Neurosciences, University of Western Ontario, London Health Sciences Centre, London, Canada
| | - Andrea Zini
- Department of Neurology and Stroke Center, IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Maggiore Hospital, Bologna, Italy
| | - Mayank Goyal
- Department of Radiology, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada
| | - Bijoy K Menon
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada
| | - Mohammed Almekhlafi
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary and Foothills Medical Centre, Calgary, AB, Canada
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23
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Lee SM, Hwangbo S, Norwitz ER, Koo JN, Oh IH, Choi ES, Jung YM, Kim SM, Kim BJ, Kim SY, Kim GM, Kim W, Joo SK, Shin S, Park CW, Park T, Park JS. Nonalcoholic fatty liver disease and early prediction of gestational diabetes using machine learning methods. Clin Mol Hepatol 2021; 28:105-116. [PMID: 34649307 PMCID: PMC8755469 DOI: 10.3350/cmh.2021.0174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 10/14/2021] [Indexed: 11/14/2022] Open
Abstract
Background/Aims To develop an early prediction model for gestational diabetes mellitus (GDM) using machine learning and to evaluate whether the inclusion of nonalcoholic fatty liver disease (NAFLD)-associated variables increases the performance of model. Methods This prospective cohort study evaluated pregnant women for NAFLD using ultrasound at 10–14 weeks and screened them for GDM at 24–28 weeks of gestation. The clinical variables before 14 weeks were used to develop prediction models for GDM (setting 1, conventional risk factors; setting 2, addition of new risk factors in recent guidelines; setting 3, addition of routine clinical variables; setting 4, addition of NALFD-associated variables, including the presence of NAFLD and laboratory results; and setting 5, top 11 variables identified from a stepwise variable selection method). The predictive models were constructed using machine learning methods, including logistic regression, random forest, support vector machine, and deep neural networks. Results Among 1,443 women, 86 (6.0%) were diagnosed with GDM. The highest performing prediction model among settings 1–4 was setting 4, which included both clinical and NAFLD-associated variables (area under the receiver operating characteristic curve [AUC] 0.563–0.697 in settings 1–3 vs. 0.740–0.781 in setting 4). Setting 5, with top 11 variables (which included NAFLD and hepatic steatosis index), showed similar predictive power to setting 4 (AUC 0.719–0.819 in setting 5, P=not significant between settings 4 and 5). Conclusions We developed an early prediction model for GDM using machine learning. The inclusion of NAFLD-associated variables significantly improved the performance of GDM prediction. (ClinicalTrials.gov Identifier: NCT02276144)
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Affiliation(s)
- Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Suhyun Hwangbo
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Korea
| | - Errol R Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, U.S.A
| | | | | | - Eun Saem Choi
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Young Mi Jung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sang Youn Kim
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Gyoung Min Kim
- Department of Radiology, Yeonsei University College of Medicine, Seoul, Korea
| | - Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sae Kyung Joo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Taesung Park
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Korea.,Department of Statistics, Seoul National University, Seoul, Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
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24
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Kim BJ, Park JI, Nam JH, Lee JH, Lee CH, Son JW, Park JS, Shin DG, Kim U, Her SH, Chang KY, Ahn TH, Jeong MH, Rha SW, Kim HS. Clinical impact of intravascular ultrasound guidance in patients of ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention with drug eluting stent. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2084] [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
There is little data about clinical role of intravascular ultrasound (IVUS)-guided Percutaneous (PCI) in the setting of ST-segment elevation myocardial infarction (STEMI).
Methods
From 2005 to 2018, a total of 8,129 patients who underwent PCI with STEMI were investigated from the Korea Acute Myocardial Infarction Registry-National Institute of Health database. Patients with Non-ST segment elevation myocardial infarction, cardiogenic shock, bare metal stent implantation, thrombolytic treatment, and coronary artery bypass graft surgery were excluded. We categorized patients into two groups based on the treatment strategy: IVUS-guided PCI group (n=1,544), and coronary angiography guidance (CAG)-guided PCI group (n=6,585). The primary endpoint was composite of major adverse cardiovascular (MACE), including, cardiac death, myocardial infarction (MI), repeat target vessel revascularization (TVR) and stent thrombosis (ST).
Results
IVUS-guided PCI was performed in 19% patients (1544/8129). After propensity score matching, there were no statistically difference in the rate of cardiac death (0% in IVUS vs. 0.26% in CAG, p=0.947), MI (2.01% vs. 2.01%, p=0.408), TVR (1.23% vs. 0.91%, p=0.131), ST (0.32% vs. 0.45%, p=0.828) and composite of MACE at 1 year between two groups (2.01% vs. 2.40%, p=0.843). Independent risk factors for MACE were diabetes mellitus and multi-vessel disease, but not IVUS-guided PCI (HR 1.167, 95% CI, 0.896–1.520, p=0.251).
Conclusion
This study suggests that routine usage of IVUS in the setting of STEMI may not be necessary. Large-scaled random study will be needed for further evaluation.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B J Kim
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J I Park
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J H Nam
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J H Lee
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - C H Lee
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J W Son
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J S Park
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - D G Shin
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - U Kim
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - S H Her
- St. Vincent's Hospital, College of Medicine, Suwon, Korea (Republic of)
| | - K Y Chang
- The Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Korea (Republic of)
| | - T H Ahn
- Gachon University Gil Medical Center, Incheon, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - S W Rha
- Korea University Guro Hospital, Seoul, Korea (Democratic People's Republic of)
| | - H S Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
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25
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Baik SH, Jung C, Kim JY, Shin DW, Kim BJ, Kang J, Bae HJ, Kim JH. Local Intra-arterial Thrombolysis during Mechanical Thrombectomy for Refractory Large-Vessel Occlusion: Adjunctive Chemical Enhancer of Thrombectomy. AJNR Am J Neuroradiol 2021; 42:1986-1992. [PMID: 34475193 DOI: 10.3174/ajnr.a7264] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/11/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Data on adjunctive intra-arterial thrombolysis during mechanical thrombectomy for refractory thrombus are sparse. The aim of this study was to evaluate the efficacy and safety of local intra-arterial urokinase as an adjunct to mechanical thrombectomy for refractory large-vessel occlusion. MATERIALS AND METHODS We retrospectively evaluated patients with acute ischemic stroke who underwent mechanical thrombectomy for anterior circulation large-vessel occlusion between January 2016 and December 2019. Patients were divided into 2 groups based on the use of intra-arterial urokinase as an adjunctive therapy during mechanical thrombectomy for refractory thrombus: the urokinase and nonurokinase groups. Herein, refractory thrombus was defined as the target occlusion with minimal reperfusion (TICI 0 or 1) despite >3 attempts with conventional mechanical thrombectomy. The baseline characteristics, procedural outcomes, and clinical outcome were compared between the 2 groups. RESULTS One hundred fourteen cases of refractory thrombus were identified. A total of 45 and 69 patients were in the urokinase and the nonurokinase groups, respectively. The urokinase group compared with the nonurokinase group showed a higher rate of successful reperfusion (82.2% versus 63.8%, P = .034), with lower procedural times (54 versus 69 minutes, P = .137). The rates of good clinical outcome, distal embolism, and symptomatic intracranial hemorrhage were similar between the 2 groups. The use of intra-arterial urokinase (OR = 3.682; 95% CI, 1.156-11.730; P = .027) was an independent predictor of successful reperfusion. CONCLUSIONS The use of local intra-arterial urokinase as an adjunct to mechanical thrombectomy may be an effective and safe method that provides better recanalization than the conventional mechanical thrombectomy for refractory thrombus in patients with embolic large-vessel occlusion.
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Affiliation(s)
- S H Baik
- From the Department of Radiology (S.H.B., C.J., D.-W.S., J.H.K.,)
| | - C Jung
- From the Department of Radiology (S.H.B., C.J., D.-W.S., J.H.K.,)
| | - J Y Kim
- Department of Neurology (J.Y.K., B.J.K., J.K., H.-J.B.), Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - D-W Shin
- From the Department of Radiology (S.H.B., C.J., D.-W.S., J.H.K.,)
| | - B J Kim
- Department of Neurology (J.Y.K., B.J.K., J.K., H.-J.B.), Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - J Kang
- Department of Neurology (J.Y.K., B.J.K., J.K., H.-J.B.), Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - H-J Bae
- Department of Neurology (J.Y.K., B.J.K., J.K., H.-J.B.), Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - J H Kim
- From the Department of Radiology (S.H.B., C.J., D.-W.S., J.H.K.,)
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26
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Bala F, Ospel J, Mulpur B, Kim BJ, Yoo J, Menon BK, Goyal M, Federau C, Sohn SI, Hussain MS, Almekhlafi MA. Infarct Growth despite Successful Endovascular Reperfusion in Acute Ischemic Stroke: A Meta-analysis. AJNR Am J Neuroradiol 2021; 42:1472-1478. [PMID: 34083260 DOI: 10.3174/ajnr.a7177] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 03/25/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND Infarct volume inversely correlates with good recovery in stroke. The magnitude and predictors of infarct growth despite successful reperfusion via endovascular treatment are not known. PURPOSE We aimed to summarize the extent of infarct growth in patients with acute stroke who achieved successful reperfusion (TICI 2b-3) after endovascular treatment. DATA SOURCES We performed a systematic review and meta-analysis by searching MEDLINE and Google Scholar for articles published up to October 31, 2020. STUDY SELECTION Studies of >10 patients reporting baseline and post-endovascular treatment infarct volumes on MR imaging were included. Only patients with TICI 2b-3 were included. We calculated infarct growth at a study level as the difference between baseline and follow-up MR imaging infarct volumes. DATA ANALYSIS Our search yielded 345 studies, and we included 10 studies reporting on 973 patients having undergone endovascular treatment who achieved successful reperfusion. DATA SYNTHESIS The mean baseline infarct volume was 19.5 mL, while the mean final infarct volume was 37.5 mL. A TICI 2b reperfusion grade was achieved in 24% of patients, and TICI 2c or 3 in 76%. The pooled mean infarct growth was 14.8 mL (95% CI, 7.9-21.7 mL). Meta-regression showed higher infarct growth in studies that reported higher baseline infarct volumes, higher rates of incomplete reperfusion (modified TICI 2b), and longer onset-to-reperfusion times. LIMITATIONS Significant heterogeneity among studies was noted and might be driven by the difference in infarct growth between early- and late-treatment studies. CONCLUSIONS These results suggest considerable infarct growth despite successful endovascular treatment reperfusion and call for a faster workflow and the need for specific therapies to limit infarct growth.
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Affiliation(s)
- F Bala
- From the Calgary Stroke Program (F.B., J.O., B.K.M., M.G., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences (F.B., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - J Ospel
- From the Calgary Stroke Program (F.B., J.O., B.K.M., M.G., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Neuroradiology, Clinic of Radiology, and Nuclear Medicine (J.O.), University Hospital Basel, Basel, Switzerland
| | - B Mulpur
- Cerebrovascular Center and Department of Neurology (B.M., M.S.H.), Neurological Institute, Cleveland Clinic, Ohio
| | - B J Kim
- Department of Neurology and Cerebrovascular Center (B.J.K.), Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - J Yoo
- Yonsei University College of Medicine (J.Y.), Yongin Severance Hospital, Yongin, Korea
| | - B K Menon
- From the Calgary Stroke Program (F.B., J.O., B.K.M., M.G., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences (F.B., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Radiology (B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - M Goyal
- From the Calgary Stroke Program (F.B., J.O., B.K.M., M.G., M.A.A.), University of Calgary, Calgary, Alberta, Canada
| | - C Federau
- Institute for Biomedical Engineering (C.F.), Swiss Federal Institute of Technology in Zürich, Zürich, Switzerland
| | - S-I Sohn
- Department of Neurology (S.-I.S.), Keimyung University School of Medicine, Daegu, Korea
| | - M S Hussain
- Cerebrovascular Center and Department of Neurology (B.M., M.S.H.), Neurological Institute, Cleveland Clinic, Ohio
| | - M A Almekhlafi
- From the Calgary Stroke Program (F.B., J.O., B.K.M., M.G., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences (F.B., B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
- Department of Radiology (B.K.M., M.A.A.), University of Calgary, Calgary, Alberta, Canada
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27
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Kim SY, Lee SM, Kim SM, Kim BJ, Koo JN, Oh IH, Oh S, Park CW, Jun JK, Lim JH, Ryu HM, Park JS. Novel method of real-time PCR-based screening for common fetal trisomies. BMC Med Genomics 2021; 14:195. [PMID: 34330281 PMCID: PMC8323267 DOI: 10.1186/s12920-021-01039-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The non-invasive prenatal test (NIPT) is based on next generation sequencing (NGS) and is used for screening for fetal trisomy. However, it is time-consuming and technically difficult. Recently, peptide nucleic acid (PNA) probe-based real-time polymerase chain reaction (RT-PCR) was developed. This study aimed to examine the performance of the RT-PCR-based NIPT for screening of common fetal trisomies METHODS: From stored maternal plasma, RT-PCR was performed using Patio™ NIPT Detection Kit. In melting curve analysis, the height of melting peaks of target chromosome and reference chromosome was calculated as a peak ratio. The adjusted peak ratio of 8 markers with correction factors in each target chromosome was summated and calculated to z-score. The cut-off value for each target chromosome was established for classification (low risk vs. high risk for trisomy) whose performance was obtained in the validation phase. RESULTS 330 plasma samples from pregnant women with normal fetus and 22 trisomy cell-line samples were used to establish the optimal cut-off values for z-score of each target chromosome. In the validation phase, 1023 samples from pregnant women including 22 cases with fetal trisomy and 1001 cases of normal control were used. The RT-PCR-based NIPT showed 95.45% sensitivity [95% confidence interval (CI) 77.16-99.88%], 98.60% specificity (95% CI 97.66-99.23%), and 98.53% accuracy (95% CI 97.59-99.18%) for the identification of trisomy 21, 18, or 13. Of 1023 samples, fifteen cases were mismatched for classification [one case as a false negative (false negative rate: 4.5%) and 14 cases as false positives (false positive rate: 1.4%)]. CONCLUSION The RT-PCR-based NIPT showed high sensitivity and specificity for the detection of common fetal trisomies and it could be a feasible alternative to NGS-based NIPT.
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Affiliation(s)
- So Yeon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | | | | | - Sohee Oh
- Department of Biostatistics, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Ji Hyae Lim
- Center for Prenatal Biomarker Research, CHA Advanced Research Institute, Gyeonggi-do, Korea
| | - Hyun Mee Ryu
- Center for Prenatal Biomarker Research, CHA Advanced Research Institute, Gyeonggi-do, Korea.
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea.
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
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Suzuki H, Liu H, Bertinshaw J, Ueda K, Kim H, Laha S, Weber D, Yang Z, Wang L, Takahashi H, Fürsich K, Minola M, Lotsch BV, Kim BJ, Yavaş H, Daghofer M, Chaloupka J, Khaliullin G, Gretarsson H, Keimer B. Proximate ferromagnetic state in the Kitaev model material α-RuCl 3. Nat Commun 2021; 12:4512. [PMID: 34301938 PMCID: PMC8302668 DOI: 10.1038/s41467-021-24722-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [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: 12/01/2020] [Accepted: 07/01/2021] [Indexed: 11/27/2022] Open
Abstract
α-RuCl3 is a major candidate for the realization of the Kitaev quantum spin liquid, but its zigzag antiferromagnetic order at low temperatures indicates deviations from the Kitaev model. We have quantified the spin Hamiltonian of α-RuCl3 by a resonant inelastic x-ray scattering study at the Ru L3 absorption edge. In the paramagnetic state, the quasi-elastic intensity of magnetic excitations has a broad maximum around the zone center without any local maxima at the zigzag magnetic Bragg wavevectors. This finding implies that the zigzag order is fragile and readily destabilized by competing ferromagnetic correlations. The classical ground state of the experimentally determined Hamiltonian is actually ferromagnetic. The zigzag state is stabilized by quantum fluctuations, leaving ferromagnetism – along with the Kitaev spin liquid – as energetically proximate metastable states. The three closely competing states and their collective excitations hold the key to the theoretical understanding of the unusual properties of α-RuCl3 in magnetic fields. RuCl3 has stood out as a prime candidate in the search for quantum spin liquids; however, its antiferromagnetic ordering at low temperature suggests deviations from typical QSL models. Here, using resonant inelastic x-ray scattering, the authors provide a comprehensive determination of the low energy effective Hamiltonian.
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Affiliation(s)
- H Suzuki
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
| | - H Liu
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
| | - J Bertinshaw
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - K Ueda
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Department of Applied Physics, University of Tokyo, Tokyo, Japan
| | - H Kim
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - S Laha
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - D Weber
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Z Yang
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - L Wang
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - H Takahashi
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - K Fürsich
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - M Minola
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - B V Lotsch
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Department of Chemistry, University of Munich (LMU), München, Germany
| | - B J Kim
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - H Yavaş
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany.,SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - M Daghofer
- Institute for Functional Matter and Quantum Technologies, University of Stuttgart, Stuttgart, Germany.,Center for Integrated Quantum Science and Technology, University of Stuttgart, Stuttgart, Germany
| | - J Chaloupka
- Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Brno, Czech Republic.,Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - G Khaliullin
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
| | - H Gretarsson
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.,Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - B Keimer
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
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Choi GH, Shin CH, Kim JY, Kim BJ. Circumferential steady-state creep test and analysis of Zircaloy-4 fuel cladding. Nuclear Engineering and Technology 2021. [DOI: 10.1016/j.net.2021.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Roh EY, Oh S, Yoon JH, Kim BJ, Song EY, Shin S. Umbilical Cord Blood Units Cryopreserved in the Public Cord Blood Bank: A Breakthrough in iPSC Haplobanking? Cell Transplant 2021; 29:963689720926151. [PMID: 32623908 PMCID: PMC7563803 DOI: 10.1177/0963689720926151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The use of induced pluripotent stem cells (iPSCs) is an emerging therapeutic option for precision medicine. Cord blood (CB) cells with lower immunogenicity, fewer genomic changes, and persistent epigenetic memory might be ideal candidates for iPSC production. Based on the human leukocyte antigen (HLA) distribution of cord blood units (CBUs) in the public CB bank, we estimated the coverage of the Korean population with HLA-homozygous iPSCs to repurpose cryopreserved CBUs. We analyzed a total of 27,904 Korean CBUs donated to the public CB bank. Low-to-intermediate resolution typing was performed for HLA-A, -B, and -DRB1 alleles, and individuals possessing homozygous HLA haplotypes were identified by direct counting. Moreover, the matching probabilities for zero-mismatch transplantation were calculated for 27,904 CBUs and 50,000,000 potential Korean patients. Among the preserved CBUs, 15 HLA-A, 40 HLA-B, and 13 HLA-DRB1 alleles as well as 48 homozygous HLA-A-B-DRB1 haplotypes were identified at serological equivalents (2 digits). The 48 identified homozygous haplotypes cumulatively matched 78.18% of the 27,904 Korean CB donors as zero HLA-mismatch iPSC sources. Among the combinations of 1,699 haplotypes with frequencies greater than 0.001%, assuming a population of 50 million, those 48 haplotypes can provide a match for 78.37% of potential Korean recipients. A practicable number of HLA-A, -B, and -DRB1 homozygous iPSC lines derived from CBUs may be an efficient option in allogeneic iPSC therapy because this type of haplobanking may provide cell lines with optimal HLA matching for up to three-quarters of the Korean population.
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Affiliation(s)
- Eun Youn Roh
- Department of Laboratory Medicine, Seoul National University Boramae Medical Center, Republic of Korea.,Seoul Metropolitan Public Cord Blood Bank-ALLCORD, Republic of Korea.,Department of Laboratory Medicine, Seoul National University College of Medicine, Republic of Korea.,Both the authors contributed equally to this study as co-first authors
| | - Sohee Oh
- Department of Biostatistics, Seoul National University Boramae Medical Center, Republic of Korea.,Both the authors contributed equally to this study as co-first authors
| | - Jong Hyun Yoon
- Department of Laboratory Medicine, Seoul National University Boramae Medical Center, Republic of Korea.,Seoul Metropolitan Public Cord Blood Bank-ALLCORD, Republic of Korea.,Department of Laboratory Medicine, Seoul National University College of Medicine, Republic of Korea
| | - Byoung Jae Kim
- Seoul Metropolitan Public Cord Blood Bank-ALLCORD, Republic of Korea.,Department of Obstetrics and Gynecology, Seoul National University Boramae Medical Center, Republic of Korea
| | - Eun Young Song
- Department of Laboratory Medicine, Seoul National University College of Medicine, Republic of Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University Boramae Medical Center, Republic of Korea.,Seoul Metropolitan Public Cord Blood Bank-ALLCORD, Republic of Korea.,Department of Laboratory Medicine, Seoul National University College of Medicine, Republic of Korea
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31
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Park SJ, Han HS, Shin SH, Yoo KH, Li K, Kim BJ, Seo SJ, Park KY. Adverse skin reactions due to use of face masks: a prospective survey during the COVID-19 pandemic in Korea. J Eur Acad Dermatol Venereol 2021; 35:e628-e630. [PMID: 34131961 PMCID: PMC8447351 DOI: 10.1111/jdv.17447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S H Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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32
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Shin S, Lee HR, Yoon JH, Kim BJ, Kim N, Park H, Roh EY. Increased Nucleated RBCs in Cord Blood: Not an Exclusion Criterion but a Quality Indicator for Hematopoietic Progenitor Cell Transplantation. Transfus Med Rev 2021; 35:53-59. [PMID: 34226061 DOI: 10.1016/j.tmrv.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/21/2021] [Accepted: 05/27/2021] [Indexed: 10/21/2022]
Abstract
Increased nucleated red blood cell (NRBC) counts have been reported to be associated with adverse fetal outcomes, and cord blood units (CBUs) with increased NRBC counts require a 2nd questionnaire to determine their suitability for transplantation. However, a recent study demonstrated a positive correlation of NRBCs with CD34+ cells and total nucleated cells (TNCs). We evaluated the association between the NRBC count and hematopoietic progenitor cell (HPC) content (TNC and CD34+ cell counts) in Korean full-term newborn CBUs. In addition, we assessed whether an increased NRBC count is associated with newborn health problems that impair CBU safety. Among the 32,876 units processed from May 2006 to December 2018, a total of 23,385 CBUs with a TNC count ≥ 7 × 108 and reliable perinatal information were analyzed to assess the association of the NRBC count with CBU parameters, and the newborns associated with 457 CBUs that required the 2nd questionnaire due to an increased NRBC (≥ 15 NRBCs/100 WBCs) were assessed at one year for health problems that threatened CBU safety. The majority of the CBUs that required the 2nd questionnaire due to an increased NRBC count (96.9%) were determined to be suitable for transplantation. Those with an increased NRBC count showed significantly higher CD34+ cell and TNC counts and a higher rate of transplantation (P < 0.001, < 0.001 and 0.025, respectively). NRBCs showed a significant positive correlation with TNCs and CD34+ cells and a significant negative correlation with birth weight (all P < 0.001; adjusted r = 0.185, 0.369 and - 0.029, respectively). In the multiple linear regression analysis, NRBCs showed independent and positive correlations with TNCs and CD34+ cells after adjustments for birth weight and gestational age (all P < 0.001; β = 0.182, adjusted R2 = 0.053 and β = 0.367, adjusted R2 = 0.418). An increased NRBC count in full-term normal delivery is a surrogate marker of HPCs in CBUs rather than an exclusion criterion for CBU safety. Moreover, providing the NRBC count together with the NRBC-corrected TNC count will be useful for clinicians to select CBUs for transplantation.
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Affiliation(s)
- Sue Shin
- Department of Laboratory Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; Seoul Metropolitan Government Public Cord Blood Bank (ALLCORD), Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hye Ryun Lee
- Department of Laboratory Medicine, National Medical Center, Seoul, Republic of Korea
| | - Jong Hyun Yoon
- Department of Laboratory Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; Seoul Metropolitan Government Public Cord Blood Bank (ALLCORD), Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byoung Jae Kim
- Seoul Metropolitan Government Public Cord Blood Bank (ALLCORD), Seoul, Republic of Korea; Department of Obstetrics and Gynecology, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Namhee Kim
- Department of Laboratory Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyunwoong Park
- Department of Laboratory Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Youn Roh
- Department of Laboratory Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; Seoul Metropolitan Government Public Cord Blood Bank (ALLCORD), Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
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33
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Han HS, Park JW, Yoo KH, Kim BJ. A phase I clinical trial to evaluate the safety of HU-045 for treating moderate-to-severe glabellar lines: a pilot study. J Eur Acad Dermatol Venereol 2021; 35:e614-e617. [PMID: 34014571 DOI: 10.1111/jdv.17369] [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: 11/27/2022]
Affiliation(s)
- H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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34
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Kim K, Kim H, Kim J, Kwon C, Kim JS, Kim BJ. Author Correction: Direct observation of excitonic instability in Ta 2NiSe 5. Nat Commun 2021; 12:2998. [PMID: 33990591 PMCID: PMC8121826 DOI: 10.1038/s41467-021-23476-3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Kwangrae Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Hoon Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Jonghwan Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea.,Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Changil Kwon
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Jun Sung Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea. .,Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea.
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35
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Park SJ, Park JW, Ahn GR, Choi SY, Yoo KH, Li K, Kim BJ. A study of the microbiological profile of filler-induced skin necrosis. Clin Exp Dermatol 2021; 46:901-905. [PMID: 33763910 DOI: 10.1111/ced.14653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/08/2021] [Accepted: 03/19/2021] [Indexed: 11/28/2022]
Abstract
Skin necrosis is one of the most severe complications following filler injections, and can result in permanent aesthetic defects. Although an increasing number of studies have addressed the management of dermal filler complications, no study has described the spectrum of microbial pathogens. The aim of this study was to delineate the bacterial profile and prognostic factors of filler-related skin necrosis by reviewing the clinical and microbiological features of these patients. A retrospective medical record review of patients undergoing treatment for skin necrosis induced by fillers was conducted. In total, 10 cases were identified, with injection sites being the nasolabial fold (70%; n = 7), nasal dorsum (20%; n = 2) and nasal tip (10%; n = 1). Reviewing the culture results, the true culture-positive rate was found to be 50% after cases of contamination were excluded. To avoid permanent sequelae, all physicians should be aware of possible secondary infections when treating filler-induced skin necrosis.
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Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - G R Ahn
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - S Y Choi
- Department of Dermatology, Seoul Paik Hospital, Inje University, Seoul, South Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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36
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Tanjung EF, Kim BJ, Jo D. Effects on pool boiling critical heat flux (CHF) with different direction and magnitude of additional accelerations due to rolling. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2020.108095] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Coulomb attraction between electrons and holes in a narrow-gap semiconductor or a semimetal is predicted to lead to an elusive phase of matter dubbed excitonic insulator. However, direct observation of such electronic instability remains extremely rare. Here, we report the observation of incipient divergence in the static excitonic susceptibility of the candidate material Ta2NiSe5 using Raman spectroscopy. Critical fluctuations of the excitonic order parameter give rise to quasi-elastic scattering of B2g symmetry, whose intensity grows inversely with temperature toward the Weiss temperature of TW ≈ 237 K, which is arrested by a structural phase transition driven by an acoustic phonon of the same symmetry at TC = 325 K. Concurrently, a B2g optical phonon becomes heavily damped to the extent that its trace is almost invisible around TC, which manifests a strong electron-phonon coupling that has obscured the identification of the low-temperature phase as an excitonic insulator for more than a decade. Our results unambiguously reveal the electronic origin of the phase transition.
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Affiliation(s)
- Kwangrae Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Hoon Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Jonghwan Kim
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Changil Kwon
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - Jun Sung Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, South Korea.
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, South Korea.
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38
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Yoo KH, Park SJ, Han HS, Won CH, Lee YW, Kim BJ. Randomized, double-blind, active-controlled, multicentre, phase III clinical trial with two stages to assess the safety and efficacy of letibotulinum toxin a vs. onabotulinum toxin a for subjects with moderate to severe crow's feet. J Eur Acad Dermatol Venereol 2021; 35:1587-1594. [PMID: 33721365 DOI: 10.1111/jdv.17217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/24/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Letibotulinum toxin A (LeBA) was approved by the Ministry of Food and Drug Safety (known as the Korea Food & Drug Administration) for cosmetic indications in 2012. However, the efficacy and safety of this newly introduced LeBA have not been investigated in crow's feet lines (CFL) treatment and standardization before its universal use. OBJECTIVE The aim of this multicentre, double-blind, randomized, parallel, active-controlled Phase III clinical trial with two stages (ClinicalTrials.gov identifier: NCT03408236) was to investigate the non-inferiority of LeBA vs. the existing onabotulinum toxin A (OnBA) for the treatment of CFL. METHODS A total of 240 subjects were randomized to either the test (LeBA) or control (OnBA) group. At the baseline and at weeks 4 while maximum smiling (primary efficacy assessment), 8, 12 and 16, investigator's on-site evaluation, independent evaluator, evaluation by the subjects, subjects' satisfaction assessment and safety assessment were performed. RESULTS At week 4, the response rate of primary efficacy assessment was 69.75% and 68.33% in the test (LeBA) and control (OnBA) groups, respectively, without a significant difference. Other minor secondary evaluation results showed significant differences suggesting that LeBA offered better improvement than OnBA, but the overall results did not show significant differences between the two groups. CONCLUSION This study showed that LeBA was as effective and safe as OnBA for the treatment of CFL at the same doses.
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Affiliation(s)
- K H Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - S J Park
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - H S Han
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - C H Won
- Department of Dermatology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea
| | - Y W Lee
- Department of Dermatology, College of Medicine, Konkuk University Hospital, Seoul, Korea
| | - B J Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
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39
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Lee JY, Kim BJ, Lee SH, Lee JW, Lee WS. Low quality of life and high HSS-29 scores reflect the risk of loss to follow-up: a study in patients with androgenetic alopecia. J Eur Acad Dermatol Venereol 2021; 35:e457-e459. [PMID: 33657244 DOI: 10.1111/jdv.17212] [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] [Received: 12/14/2020] [Accepted: 02/24/2021] [Indexed: 11/29/2022]
Affiliation(s)
- J Y Lee
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - B J Kim
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - S H Lee
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - J W Lee
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - W S Lee
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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40
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Lee SM, Nam Y, Choi ES, Jung YM, Leiby J, Koo JN, Oh IH, Kim SM, Kim BJ, Kim SY, Kim GM, Joo SK, Shin S, Norwitz ER, Park CW, Kim W, Kim D, Park JS. 487 Early prediction of pregnancy-associated hypertension : Development of novel strategies with semi-supervised learning. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2020.12.508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Lee SM, Hwangbo S, Norwitz ER, Koo JN, Oh IH, Choi ES, Jung YM, Kim SM, Kim BJ, Kim SY, Kim GM, Kim W, Joo SK, Shin S, Park CW, Park T, Park JS. 390 Prediction of gestational diabetes in the first trimester using machine learning-based methods. Am J Obstet Gynecol 2021. [DOI: 10.1016/j.ajog.2020.12.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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42
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Choi GH, Kim DH, Shin CH, Kim JY, Kim BJ. In-situ deformation measurement of Zircaloy-4 cladding tube under various transient heating conditions using optical image analysis. Nuclear Engineering and Design 2020. [DOI: 10.1016/j.nucengdes.2020.110859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Park SJ, Park JW, Park KY, Li K, Seo SJ, Kim BJ, Yoo KH. Systemic contact dermatitis induced by Rhus allergens in Korea: exercising caution in the consumption of this nutritious food. Clin Exp Dermatol 2020; 46:324-327. [PMID: 32974941 DOI: 10.1111/ced.14458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/11/2020] [Accepted: 09/16/2020] [Indexed: 11/29/2022]
Abstract
Systemic contact dermatitis (SCD) develops when a person who was previously sensitized to an allergen is exposed to the same allergen via the systemic route. In East Asia, the use of lacquer for polishing furniture is common and a part of the traditional culture. Contact exposure to tableware polished with Rhus lacquer may lead to sensitization. In Korea, SCD is commonly observed after systemic exposure to Rhus, a nutritious food item consumed because of the common belief of it improving the immune system. In this study, we reviewed the medical records of 21 Korean patients with SCD caused by Rhus ingestion. We found that the most significant epidemiological factor for SCD was the season of the year. Furthermore, 66.67% of the patients presented with leucocytosis and 23.81% showed increased liver enzyme levels. It is important to educate people on the risks associated with the systemic ingestion of Rhus.
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Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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44
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Yea JH, Kim I, Sym G, Park JK, Lee AY, Cho BC, Bae TS, Kim BJ, Jo CH. Regeneration of a full-thickness defect in rotator cuff tendon with umbilical cord-derived mesenchymal stem cells in a rat model. PLoS One 2020; 15:e0235239. [PMID: 33166292 PMCID: PMC7652329 DOI: 10.1371/journal.pone.0235239] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/27/2020] [Indexed: 01/08/2023] Open
Abstract
Although rotator cuff disease is a common cause of shoulder pain, there is still no treatment method that could halt or reveres its development and progression. The purpose of this study was to investigate the efficacy of umbilical cord-derived mesenchymal stem cells (UC MSCs) on the regeneration of a full-thickness rotator cuff defect (FTD) in a rat model. We injected either UC MSCs or saline to the FTD and investigated macroscopic, histological and biomechanical results and cell trafficking. Treatment with UC MSCs improved macroscopic appearance in terms of tendon thickness at two weeks, and inflammation, defect size, swelling/redness and connection surrounding tissue and slidability at four weeks compared to the saline group. Histologically, UC MSCs induced the tendon matrix formation recovering collagen organization, nuclear aspect ratio and orientation angle of fibroblast as well as suppressing cartilage-related glycosaminoglycan compared to saline group at four weeks. The UC MSCs group also improved ultimate failure load by 25.0% and 19.0% and ultimate stress by 27.3% and 26.8% at two and four weeks compared to saline group. UC MSCs labeled with PKH26 exhibited 5.3% survival at four weeks compared to three hours after injection. This study demonstrated that UC MSCs regenerated the FTD with tendon tissue similar properties to the normal tendon in terms of macroscopic, histological and biomechanical characteristics in a rat model.
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Affiliation(s)
- Ji-Hye Yea
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - InJa Kim
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Gayoung Sym
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Jin-Kyung Park
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Ah-Young Lee
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Byeong Chan Cho
- Department of Biomedical Engineering, Collage of Science and Engineering, Jungwon University, Goesan-gun, Chungcheongbuk-do, Korea
| | - Tae Soo Bae
- Department of Biomedical Engineering, Collage of Science and Engineering, Jungwon University, Goesan-gun, Chungcheongbuk-do, Korea
| | - Byoung Jae Kim
- Department of Obstetrics & Gynecology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Chris Hyunchul Jo
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
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45
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Hong S, Lee SM, Kwak SH, Kim BJ, Koo JN, Oh IH, Oh S, Kim SM, Shin S, Kim W, Joo SK, Norwitz ER, Louangsenlath S, Park CW, Jun JK, Park JS. A Comparison of Predictive Performances between Old versus New Criteria in a Risk-Based Screening Strategy for Gestational Diabetes Mellitus. Diabetes Metab J 2020; 44:726-736. [PMID: 32431101 PMCID: PMC7643588 DOI: 10.4093/dmj.2019.0126] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/10/2019] [Indexed: 01/27/2023] Open
Abstract
Background The definition of the high-risk group for gestational diabetes mellitus (GDM) defined by the American College of Obstetricians and Gynecologists was changed from the criteria composed of five historic/demographic factors (old criteria) to the criteria consisting of 11 factors (new criteria) in 2017. To compare the predictive performances between these two sets of criteria. Methods This is a secondary analysis of a large prospective cohort study of non-diabetic Korean women with singleton pregnancies designed to examine the risk of GDM in women with nonalcoholic fatty liver disease. Maternal fasting blood was taken at 10 to 14 weeks of gestation and measured for glucose and lipid parameters. GDM was diagnosed by the two-step approach. Results Among 820 women, 42 (5.1%) were diagnosed with GDM. Using the old criteria, 29.8% (n=244) of women would have been identified as high risk versus 16.0% (n=131) using the new criteria. Of the 42 women who developed GDM, 45.2% (n=19) would have been mislabeled as not high risk by the old criteria versus 50.0% (n=21) using the new criteria (1-sensitivity, 45.2% vs. 50.0%, P>0.05). Among the 778 patients who did not develop GDM, 28.4% (n=221) would have been identified as high risk using the old criteria versus 14.1% (n=110) using the new criteria (1-specificity, 28.4% vs. 14.1%, P<0.001). Conclusion Compared with the old criteria, use of the new criteria would have decreased the number of patients identified as high risk and thus requiring early GDM screening by half (from 244 [29.8%] to 131 [16.0%]).
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Affiliation(s)
- Subeen Hong
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Soo Heon Kwak
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Ja Nam Koo
- Department of Obstetrics and Gynecology, Seoul Women's Hospital, Incheon, Korea
| | - Ig Hwan Oh
- Department of Obstetrics and Gynecology, Seoul Women's Hospital, Incheon, Korea
| | - Sohee Oh
- Department of Biostatistics, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Laboratory Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sae Kyung Joo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Errol R. Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, MA, USA
| | | | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
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46
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Jung YM, Lee SM, Hong S, Koo JN, Oh IH, Kim BJ, Kim SM, Kim SY, Kim GM, Kyung Joo S, Shin S, Norwitz ER, Park CW, Jun JK, Kim W, Park JS. The risk of pregnancy-associated hypertension in women with nonalcoholic fatty liver disease. Liver Int 2020; 40:2417-2426. [PMID: 32558189 DOI: 10.1111/liv.14563] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS Nonalcoholic fatty liver disease (NAFLD) is an independent predictor of cardiovascular disease (CVD) in non-pregnant adults. Although the biological mechanisms underlying this association are not completely understood, metabolic factors, inflammation, and endothelial dysfunction are likely all involved. The association between NAFLD and pregnancy-associated hypertension (HTN) has not been systematically examined. The aim of this study is to assess the risk of pregnancy-associated HTN in pregnant women with NAFLD. METHODS This is secondary analysis of a prospective study of healthy pregnant women. Liver ultrasonography was performed at 10-14 weeks of gestation and maternal blood was taken for the measurement of selenoprotein P (SeP), a hepatokine independently associated with both NAFLD and CVD. Pregnancy-associated HTN was defined as the development of gestational HTN, preeclampsia, or eclampsia. RESULTS Among 877 pregnant women, the risk of developing pregnancy-associated HTN was significantly increased in women with NAFLD compared to those without NAFLD. Grade 2-3 steatosis was a significant predictor of pregnancy-associated HTN, even after adjustment for metabolic risk factors. Circulating levels of SeP were significantly higher in women with versus those without NAFLD (P = .001) and was significantly higher also in women who subsequently developed pregnancy-associated HTN compared with those who did not (P < .005). CONCLUSIONS Sonographic evidence of NAFLD at 10-14 weeks is an independent predictor of pregnancy-associated HTN. Circulating levels of SeP at that same gestational age are significantly increased in pregnant women with NAFLD who subsequently develop pregnancy-associated HTN.
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Affiliation(s)
- Young Mi Jung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Subeen Hong
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | | | | | - Byoung Jae Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sun Min Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sang Youn Kim
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Gyoung Min Kim
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - Sae Kyung Joo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Errol R Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, MA, USA
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
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47
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Park K, Kim JH, Kim BJ, Cho SJ, Hong J, Lim G. Direct Visualization of Microscale Dynamics of Water Droplets on under-Oil-Hydrophilic Membranes by Using Synchrotron White-Beam X-ray Microimaging Techniques. Langmuir 2020; 36:10548-10554. [PMID: 32787016 DOI: 10.1021/acs.langmuir.0c01867] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Despite considerable academical and practical interests on separation of water-in-oil emulsion via special wettable membranes, fundamental understanding on microscale dynamics of water droplets on under-oil-hydrophilic membranes (UOHMs) at early stages during separation is still very preliminary due to temporal and spatial resolution of existing visualization techniques. To this end, we here succeed in a direct microscopic visualization of separation processes of water droplets on the UOHMs by employing a high-speed, two-dimensional synchrotron white-beam X-ray microimaging technique. During the separation of water-in-oil emulsion, microscale dynamic behaviors of water droplets on hydrophilic membrane surfaces immersed in the different oil media (i.e., hexane, kerosene, and light and heavy mineral oils) and oil films between water droplets and membrane surfaces are visualized and analyzed.
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Affiliation(s)
- Kyungjin Park
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673 Republic of Korea
| | - Jong Hyun Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77, Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do, Republic of Korea
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, Republic of Korea
| | - Byoung Jae Kim
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Seong J Cho
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Jiwoo Hong
- School of Mechanical Engineering, Soongsil University, 369 Sang-doro, Sangdo-dong, Dongjak-gu, Seoul, Republic of Korea
| | - Geunbae Lim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77, Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do, Republic of Korea
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48
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Choi YB, Xie Y, Chen CZ, Park J, Song SB, Yoon J, Kim BJ, Taniguchi T, Watanabe K, Kim J, Fong KC, Ali MN, Law KT, Lee GH. Author Correction: Evidence of higher-order topology in multilayer WTe 2 from Josephson coupling through anisotropic hinge states. Nat Mater 2020; 19:1036. [PMID: 32681037 DOI: 10.1038/s41563-020-0762-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Yong-Bin Choi
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Yingming Xie
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Chui-Zhen Chen
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Institute for Advanced Study and School of Physical Science and Technology, Soochow University, Suzhou, China
| | - Jinho Park
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Su-Beom Song
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jiho Yoon
- Max Plank Institute for Microstructure Physics, Halle (Saale), Germany
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Republic of Korea
| | - Takashi Taniguchi
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Jonghwan Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Kin Chung Fong
- Raytheon BBN Technologies, Quantum Information Processing Group, Cambridge, MA, USA.
| | - Mazhar N Ali
- Max Plank Institute for Microstructure Physics, Halle (Saale), Germany.
| | - Kam Tuen Law
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
| | - Gil-Ho Lee
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea.
- Asia Pacific Center for Theoretical Physics, Pohang, Republic of Korea.
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49
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Choi YB, Xie Y, Chen CZ, Park J, Song SB, Yoon J, Kim BJ, Taniguchi T, Watanabe K, Kim J, Fong KC, Ali MN, Law KT, Lee GH. Evidence of higher-order topology in multilayer WTe 2 from Josephson coupling through anisotropic hinge states. Nat Mater 2020; 19:974-979. [PMID: 32632280 DOI: 10.1038/s41563-020-0721-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
Td-WTe2 (non-centrosymmetric and orthorhombic), a type-II Weyl semimetal, is expected to have higher-order topological phases with topologically protected, helical one-dimensional hinge states when its Weyl points are annihilated. However, the detection of these hinge states is difficult due to the semimetallic behaviour of the bulk. In this study, we have spatially resolved the hinge states by analysing the magnetic field interference of the supercurrent in Nb-WTe2-Nb proximity Josephson junctions. The Josephson current along the a axis of the WTe2 crystal, but not along the b axis, showed a sharp enhancement at the edges of the junction, and the amount of enhanced Josephson current was comparable to the upper limits of a single one-dimensional helical channel. Our experimental observations suggest a higher-order topological phase in WTe2 and its corresponding anisotropic topological hinge states, in agreement with theoretical calculations. Our work paves the way for the study of hinge states in topological transition-metal dichalcogenides and analogous phases.
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Affiliation(s)
- Yong-Bin Choi
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Yingming Xie
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Chui-Zhen Chen
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Institute for Advanced Study and School of Physical Science and Technology, Soochow University, Suzhou, China
| | - Jinho Park
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Su-Beom Song
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jiho Yoon
- Max Plank Institute for Microstructure Physics, Halle (Saale), Germany
| | - B J Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang, Republic of Korea
| | - Takashi Taniguchi
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Jonghwan Kim
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Kin Chung Fong
- Raytheon BBN Technologies, Quantum Information Processing Group, Cambridge, MA, USA.
| | - Mazhar N Ali
- Max Plank Institute for Microstructure Physics, Halle (Saale), Germany.
| | - Kam Tuen Law
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
| | - Gil-Ho Lee
- Department of Physics, Pohang University of Science and Technology, Pohang, Republic of Korea.
- Asia Pacific Center for Theoretical Physics, Pohang, Republic of Korea.
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50
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Decanini D, Harouri A, Mita Y, Kim BJ, Hwang G. 3D micro fractal pipettes for capillary based robotic liquid handling. Rev Sci Instrum 2020; 91:086104. [PMID: 32872947 DOI: 10.1063/5.0018456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
Miniaturized and mobile liquid handling devices are essential elements to biological or clinical applications. This will innovate the conventional liquid handling methods such as manual or automated pipetting systems. Here, we propose the micro fractal pipette as the candidate device for this objective. It is made of epoxy polymer and printed by innovative 3D nanoprinting technology based on two-photon absorption polymerization with sub-micrometer resolution. We demonstrated the efficient liquid handling performance by using the micro fractal pipette between the source droplet and the target hydrogel substrate. This is due to the high porosity (78%) and the 8.5 times larger cavity surface area compared to the full pyramid. The biomimetic inner cavity microchannel networks contribute to the low pressure drop. The proposed micro fractal pipette could also innovate the versatile and miniaturized liquid handling system, promising to various biological or clinical applications.
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Affiliation(s)
- D Decanini
- C2N-CNRS, University Paris-Saclay, 10 Boulevard Thomas Gobert, Palaiseau 91120, France
| | - A Harouri
- C2N-CNRS, University Paris-Saclay, 10 Boulevard Thomas Gobert, Palaiseau 91120, France
| | - Y Mita
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - B J Kim
- LIMMS-CNRS, Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - G Hwang
- C2N-CNRS, University Paris-Saclay, 10 Boulevard Thomas Gobert, Palaiseau 91120, France
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