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Gibadullin R, Kim TW, Tran LML, Gellman SH. Hormone Analogues with Unique Signaling Profiles from Replacement of α-Residue Triads with β/γ Diads. J Am Chem Soc 2023; 145:20539-20550. [PMID: 37697685 PMCID: PMC10588032 DOI: 10.1021/jacs.3c06703] [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] [Indexed: 09/13/2023]
Abstract
We have applied an underexplored backbone modification strategy to generate new analogues of peptides that activate two clinically important class B1 G protein-coupled receptors (GPCRs). Most peptide modification strategies involve changing side chains or, less commonly, changing the configuration at side chain-bearing carbons (i.e., l residues replaced by d residues). In contrast, backbone modifications alter the number of backbone atoms and the identities of backbone atoms relative to a poly-α-amino acid backbone. Starting from the peptide agonists PTH(1-34) (the first 34 residues of the parathyroid hormone, used clinically as the drug teriparatide) and glucagon-like peptide-1 (7-36) (GLP-1(7-36)), we replaced native α-residue triads with a diad composed of a β-amino acid residue and a γ-amino acid residue. The β/γ diad retains the number of backbone atoms in the ααα triad. Because the β and γ residue each bear a single side chain, we implemented ααα→βγ replacements at sites that contained a Gly residue (i.e., at α-residue triads that presented only two side chains). All seven of the α/β/γ-peptides derived from PTH(1-34) or GLP-1(7-36) bind to the cognate receptor (the PTHR1 or the GLP-1R), but they vary considerably in their activity profiles. Outcomes include functional mimicry of the all-α agonist, receptor-selective agonist activity, biased agonism, or strong binding with weak activation, which could lead to antagonist development. Collectively, these findings demonstrate that ααα→βγ replacements, which are easily implemented via solid-phase synthesis, can generate peptide hormone analogues that display unique and potentially useful signaling behavior.
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Affiliation(s)
- Ruslan Gibadullin
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Present address: Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Tae Wook Kim
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Lauren My-Linh Tran
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Samuel H. Gellman
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Ra HS, Kim TW, Taylor DA, Lee JJ, Song S, Ahn J, Jang J, Taniguchi T, Watanabe K, Shim JW, Lee JS, Hwang DK. Probing Optical Multi-Level Memory Effects in Single Core-Shell Quantum Dots and Application Through 2D-0D Hybrid Inverters. Adv Mater 2023; 35:e2303664. [PMID: 37465946 DOI: 10.1002/adma.202303664] [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: 04/19/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/20/2023]
Abstract
Challenges in the development of a multi-level memory (MM) device for multinary arithmetic computers have posed an obstacle to low-power, ultra-high-speed operation. For the effective transfer of a huge amount of data between arithmetic and storage devices, optical communication technology represents a compelling solution. Here, by replicating a floating gate architecture with CdSe/ZnS type-I core/shell quantum dots (QDs), a 2D-0D hybrid optical multi-level memory (OMM) device operated is demonstrated by laser pulses. In the device, laser pulses create linear optically trapped currents with MM characteristics, while conversely, voltage pulses reset all the trapped currents at once. Assuming electron transfer via the energy band alignment between MoS2 and CdSe, the study also establishes the mechanism of the OMM effect. Analysis of the designed device led to a new hypothesis that charge transfer is difficult for laterally adjacent QDs facing a double ZnS shell, which is tested by separately stimulating different positions on the 2D-0D hybrid structure with finely focused laser pulses. Results indicate that each laser pulse induced independent MM characteristics in the 2D-0D hybrid architecture. Based on this phenomenon, we propose a MM inverter to produce MM effects, such as programming and erasing, solely through the use of laser pulses. Finally, the feasibility of a fully optically-controlled intelligent system based on the proposed OMM inverters is evaluated through a CIFAR-10 pattern recognition task using a convolutional neural network.
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Affiliation(s)
- Hyun-Soo Ra
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Tae Wook Kim
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Derrick Allan Taylor
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Je-Jun Lee
- Center for Spintronics, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Seungho Song
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jongtae Ahn
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jisu Jang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Takashi Taniguchi
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Kenji Watanabe
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Jae Won Shim
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jong-Soo Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Do Kyung Hwang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nanoscience & Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
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Klepp TD, Heeren TC, Winter MR, Lloyd-Travaglini CA, Magane KM, Romero-Rodríguez E, Kim TW, Walley AY, Mason T, Saitz R. Cannabis use frequency and pain interference among people with HIV. AIDS Care 2023; 35:1235-1242. [PMID: 37201209 PMCID: PMC10332422 DOI: 10.1080/09540121.2023.2208321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 04/21/2023] [Indexed: 05/20/2023]
Abstract
Cannabis is often used by people with HIV (PWH) for pain, yet study results are inconsistent regarding whether and how it affects pain. This study examines whether greater cannabis use frequency is associated with lower pain interference and whether cannabis use modifies the association of pain severity and pain interference among 134 PWH with substance dependence or a lifetime history of injection drug use. Multi-variable linear regression models examined the association between past 30-day cannabis use frequency and pain interference. Additional models evaluated whether cannabis use modified the association between pain severity and pain interference. Cannabis use frequency was not significantly associated with pain interference. However, in a model with interaction between cannabis use frequency and pain severity, greater cannabis use frequency attenuated the strength of the association between pain severity and pain interference (p = 0.049). The adjusted mean difference (AMD) in pain interference was +1.13, + 0.81, and +0.05 points for each 1-point increase in pain severity for those with no cannabis use, 15 days of use, and daily use, respectively. These findings suggest that attenuating the impact of pain severity on pain-related functional impairment is a potential mechanism for a beneficial role of cannabis for PWH.
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Affiliation(s)
- T D Klepp
- Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
| | - T C Heeren
- Department of Biostatistics, Boston University School Public Health, Boston, MA, USA
| | - M R Winter
- Biostatics and Epidemiology Data Analytics Center, Boston University School of Public Health, Boston, MA, USA
| | - C A Lloyd-Travaglini
- Biostatics and Epidemiology Data Analytics Center, Boston University School of Public Health, Boston, MA, USA
| | - K M Magane
- Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA
| | - E Romero-Rodríguez
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
| | - T W Kim
- Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
- Grayken Center for Addiction, Boston Medical Center, Boston, MA, USA
| | - A Y Walley
- Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
- Grayken Center for Addiction, Boston Medical Center, Boston, MA, USA
| | - T Mason
- Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA
| | - R Saitz
- Clinical Addiction Research and Education (CARE) Unit, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA, USA
- Department of Community Health Sciences, Boston University School of Public Health, Boston, MA, USA
- Grayken Center for Addiction, Boston Medical Center, Boston, MA, USA
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Hyung J, Lee JY, Kim JE, Yoon S, Yoo C, Hong YS, Jeong JH, Kim TW, Jeon S, Jun HR, Jung CK, Jang JP, Kim J, Chun SM, Ahn JH. Safety and efficacy of trastuzumab biosimilar plus irinotecan or gemcitabine in patients with previously treated HER2 (ERBB2)-positive non-breast/non-gastric solid tumors: a phase II basket trial with circulating tumor DNA analysis. ESMO Open 2023; 8:101583. [PMID: 37327700 DOI: 10.1016/j.esmoop.2023.101583] [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: 04/12/2023] [Accepted: 05/15/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND Human epidermal growth factor receptor 2 (HER2) (ERBB2)-directed agents are standard treatments for patients with HER2-positive breast and gastric cancer. Herein, we report the results of an open-label, single-center, phase II basket trial to investigate the efficacy and safety of trastuzumab biosimilar (Samfenet®) plus treatment of physician's choice for patients with previously treated HER2-positive advanced solid tumors, along with biomarker analysis employing circulating tumor DNA (ctDNA) sequencing. METHODS Patients with HER2-positive unresectable or metastatic non-breast, non-gastric solid tumors who failed at least one prior treatment were included in this study conducted at Asan Medical Center, Seoul, Korea. Patients received trastuzumab combined with irinotecan or gemcitabine at the treating physicians' discretion. The primary endpoint was the objective response rate as per RECIST version 1.1. Plasma samples were collected at baseline and at the time of disease progression for ctDNA analysis. RESULTS Twenty-three patients were screened from 31 December 2019 to 17 September 2021, and 20 were enrolled in this study. Their median age was 64 years (30-84 years), and 13 patients (65.0%) were male. The most common primary tumor was hepatobiliary cancer (seven patients, 35.0%), followed by colorectal cancer (six patients, 30.0%). Among 18 patients with an available response evaluation, the objective response rate was 11.1% (95% confidence interval 3.1% to 32.8%). ERBB2 amplification was detected from ctDNA analysis of baseline plasma samples in 85% of patients (n = 17), and the ERBB2 copy number from ctDNA analysis showed a significant correlation with the results from tissue sequencing. Among 16 patients with post-progression ctDNA analysis, 7 (43.8%) developed new alterations. None of the patients discontinued the study due to adverse events. CONCLUSIONS Trastuzumab plus irinotecan or gemcitabine was safe and feasible for patients with previously treated HER2-positive advanced solid tumors with modest efficacy outcomes, and ctDNA analysis was useful for detecting HER2 amplification.
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Affiliation(s)
- J Hyung
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - J Y Lee
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul; Asan Center for Cancer Genome Discovery, Asan Institute for Life Science, Asan Medical Center, Seoul
| | - J E Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S Yoon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - C Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - Y S Hong
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - J H Jeong
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - T W Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S Jeon
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul; Asan Center for Cancer Genome Discovery, Asan Institute for Life Science, Asan Medical Center, Seoul
| | - H R Jun
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul; Asan Center for Cancer Genome Discovery, Asan Institute for Life Science, Asan Medical Center, Seoul
| | | | | | - J Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S M Chun
- Asan Center for Cancer Genome Discovery, Asan Institute for Life Science, Asan Medical Center, Seoul; Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - J H Ahn
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul.
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Im SA, Gennari A, Park YH, Kim JH, Jiang ZF, Gupta S, Fadjari TH, Tamura K, Mastura MY, Abesamis-Tiambeng MLT, Lim EH, Lin CH, Sookprasert A, Parinyanitikul N, Tseng LM, Lee SC, Caguioa P, Singh M, Naito Y, Hukom RA, Smruti BK, Wang SS, Kim SB, Lee KH, Ahn HK, Peters S, Kim TW, Yoshino T, Pentheroudakis G, Curigliano G, Harbeck N. Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, staging and treatment of patients with metastatic breast cancer. ESMO Open 2023; 8:101541. [PMID: 37178669 PMCID: PMC10186487 DOI: 10.1016/j.esmoop.2023.101541] [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: 09/27/2022] [Revised: 03/27/2023] [Accepted: 04/01/2023] [Indexed: 05/15/2023] Open
Abstract
The most recent version of the European Society for Medical Oncology (ESMO) Clinical Practice Guidelines for the diagnosis, staging and treatment of patients with metastatic breast cancer (MBC) was published in 2021. A special, hybrid guidelines meeting was convened by ESMO and the Korean Society of Medical Oncology (KSMO) in collaboration with nine other Asian national oncology societies in May 2022 in order to adapt the ESMO 2021 guidelines to take into account the differences associated with the treatment of MBC in Asia. These guidelines represent the consensus opinions reached by a panel of Asian experts in the treatment of patients with MBC representing the oncological societies of China (CSCO), India (ISMPO), Indonesia (ISHMO), Japan (JSMO), Korea (KSMO), Malaysia (MOS), the Philippines (PSMO), Singapore (SSO), Taiwan (TOS) and Thailand (TSCO). The voting was based on the best available scientific evidence and was independent of drug access or practice restrictions in the different Asian countries. The latter were discussed when appropriate. The aim of these guidelines is to provide guidance for the harmonisation of the management of patients with MBC across the different regions of Asia, drawing from data provided by global and Asian trials whilst at the same time integrating the differences in genetics, demographics and scientific evidence, together with restricted access to certain therapeutic strategies.
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Affiliation(s)
- S-A Im
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea.
| | - A Gennari
- Department of Translational Medicine, University Piemonte Orientale, Novara, Italy
| | - Y H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J H Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Z-F Jiang
- Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - S Gupta
- Tata Memorial Centre and Homi Bhabha National Institute, Mumbai, India
| | - T H Fadjari
- Department of Internal Medicine, Hasan Sadikin General Hospital, Bandung, Indonesia
| | - K Tamura
- Department of Medical Oncology, Shimane University Hospital, Shimane, Japan
| | - M Y Mastura
- Cancer Centre, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - M L T Abesamis-Tiambeng
- Section of Medical Oncology, Department of Internal Medicine, Cardinal Santos Cancer Center, San Juan, The Philippines
| | - E H Lim
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - C-H Lin
- Department of Medical Oncology, National Taiwan University Hospital, Cancer Center Branch, Taipei, Taiwan
| | - A Sookprasert
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - N Parinyanitikul
- Medical Oncology Unit, Department of Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital and Chulalongkorn University, Bangkok, Thailand
| | - L-M Tseng
- Taipei-Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - S-C Lee
- Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), Singapore, Singapore
| | - P Caguioa
- The Cancer Institute of St Luke's Medical Center, National Capital Region, The Philippines; The Cancer Institute of the University of Santo Tomas Hospital, National Capital Region, The Philippines
| | - M Singh
- Department of Radiotherapy, Pantai Cancer Institute, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia; Department of Oncology, Pantai Cancer Institute, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Y Naito
- Department of General Internal Medicine, National Cancer Center Hospital East, Kashiwa, Japan
| | - R A Hukom
- Department of Hematology and Medical Oncology, Dharmais Hospital (National Cancer Center), Jakarta, Indonesia
| | - B K Smruti
- Medical Oncology, Lilavati Hospital and Research Centre and Bombay Hospital Institute of Medical Sciences, Mumbai, India
| | - S-S Wang
- Cancer Center, Sun Yat-sen University, Guangzhou, China
| | - S B Kim
- Department of Oncology, Asan Medical Centre, Seoul, Republic of Korea
| | - K-H Lee
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - H K Ahn
- Division of Medical Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - S Peters
- Oncology Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - T W Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | | | - G Curigliano
- Istituto Europeo di Oncologia, IRCCS, Milan, Italy; Department of Oncology and Haematology, University of Milano, Milan, Italy
| | - N Harbeck
- Breast Center, Department of Obstetrics and Gynaecology and Comprehensive Cancer Center Munich, LMU University Hospital, Munich, Germany
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Oh CR, Kim JE, Lee JS, Kim SY, Kim TW, Choi J, Kim J, Park IJ, Lim SB, Park JH, Kim JH, Choi MK, Cha Y, Baek JY, Beom SH, Hong YS. Preoperative Chemoradiotherapy With Capecitabine With or Without Temozolomide in Patients With Locally Advanced Rectal Cancer: A Prospective, Randomised Phase II Study Stratified by O 6-Methylguanine DNA Methyltransferase Status: KCSG-CO17-02. Clin Oncol (R Coll Radiol) 2023; 35:e143-e152. [PMID: 36376167 DOI: 10.1016/j.clon.2022.10.016] [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: 06/17/2022] [Revised: 09/03/2022] [Accepted: 10/20/2022] [Indexed: 11/13/2022]
Abstract
AIMS To evaluate the clinical efficacy of adding temozolomide (TMZ) to preoperative capecitabine (CAP)-based chemoradiotherapy in patients with locally advanced rectal cancer (LARC) and validate O6-methylguanine DNA methyltransferase (MGMT) methylation status as a predictive marker for TMZ combined regimens. MATERIALS AND METHODS LARC patients with clinical stage II (cT3-4N0) or III (cTanyN+) disease were enrolled. They were stratified into unmethylated MGMT (uMGMT) and methylated MGMT (mMGMT) groups by methylation-specific polymerase chain reaction before randomisation and were then randomly assigned (1:1) to one of four treatment arms: uMGMT/CAP (arm A), uMGMT/TMZ + CAP (arm B), mMGMT/CAP (arm C) and mMGMT/TMZ + CAP (arm D). The primary end point was the pathological complete response (pCR) rate. RESULTS Between November 2017 and July 2020, 64 patients were randomised. Slow accrual caused early study termination. After excluding four ineligible patients, 60 were included in the full analysis set. The pCR rate was 15.0% (9/60), 0%, 14.3%, 18.8% and 26.7% for the entire cohort, arms A, B, C and D, respectively (P = 0.0498 between arms A and D). The pCR rate was 9.7% in the CAP group (arms A + C), 20.7% in the TMZ + CAP group (arms B + D), 6.9% in the uMGMT group (arms A + B) and 22.6% in the mMGMT group (arms C + D). Grade 1-2 nausea or vomiting was significantly more frequent in the TMZ + CAP treatment groups (arms B + D) than in the CAP treatment groups (arms A + C, P < 0.001) with no difference in grade 3 adverse events. There were no grade 4 or 5 adverse events. CONCLUSION The addition of TMZ to CAP-based chemoradiotherapy tended to improve pCR rates, particularly in those with mMGMT LARC. MGMT status may warrant further investigation as a predictive biomarker for chemotherapeutic agents and radiotherapy.
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Affiliation(s)
- C R Oh
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - J E Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J S Lee
- Clinical Research Center, Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S Y Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - T W Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Choi
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - I J Park
- Department of Colon and Rectal Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-B Lim
- Department of Colon and Rectal Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J-H Park
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Kim
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M K Choi
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Y Cha
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - J Y Baek
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - S-H Beom
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y S Hong
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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7
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Lee M, Kim TW, Park CY, Lee K, Taniguchi T, Watanabe K, Kim MG, Hwang DK, Lee YT. Graphene Bridge Heterostructure Devices for Negative Differential Transconductance Circuit Applications. Nanomicro Lett 2022; 15:22. [PMID: 36580180 PMCID: PMC9800667 DOI: 10.1007/s40820-022-01001-5] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Two-dimensional van der Waals (2D vdW) material-based heterostructure devices have been widely studied for high-end electronic applications owing to their heterojunction properties. In this study, we demonstrate graphene (Gr)-bridge heterostructure devices consisting of laterally series-connected ambipolar semiconductor/Gr-bridge/n-type molybdenum disulfide as a channel material for field-effect transistors (FET). Unlike conventional FET operation, our Gr-bridge devices exhibit non-classical transfer characteristics (humped transfer curve), thus possessing a negative differential transconductance. These phenomena are interpreted as the operating behavior in two series-connected FETs, and they result from the gate-tunable contact capacity of the Gr-bridge layer. Multi-value logic inverters and frequency tripler circuits are successfully demonstrated using ambipolar semiconductors with narrow- and wide-bandgap materials as more advanced circuit applications based on non-classical transfer characteristics. Thus, we believe that our innovative and straightforward device structure engineering will be a promising technique for future multi-functional circuit applications of 2D nanoelectronics.
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Affiliation(s)
- Minjong Lee
- Department of Electrical and Computer Engineering, Inha University, Incheon, 22212, Republic of Korea
- Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Tae Wook Kim
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Chang Yong Park
- Department of Electrical and Computer Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Kimoon Lee
- Department of Physics, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Takashi Taniguchi
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Kenji Watanabe
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Min-Gu Kim
- Department of Electrical and Computer Engineering, Inha University, Incheon, 22212, Republic of Korea.
- Department of Information and Communication Engineering, Inha University, Incheon, 22212, Republic of Korea.
| | - Do Kyung Hwang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
- Division of Nanoscience and Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea.
| | - Young Tack Lee
- Department of Electrical and Computer Engineering, Inha University, Incheon, 22212, Republic of Korea.
- Department of Electronic Engineering, Inha University, Incheon, 22212, Republic of Korea.
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Yu Z, Cary BP, Kim TW, Nguyen KD, Gardella TJ, Gellman SH. Kinetic and Thermodynamic Insights into Agonist Interactions with the Parathyroid Hormone Receptor-1 from a New NanoBRET Assay. ACS Chem Biol 2022; 17:3148-3158. [PMID: 36282520 PMCID: PMC9747329 DOI: 10.1021/acschembio.2c00595] [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] [Indexed: 01/20/2023]
Abstract
Polypeptides that activate the parathyroid hormone receptor-1 (PTHR1) are important in human physiology and medicine. Most previous studies of peptide binding to this receptor have involved the displacement of a radiolabeled ligand. We report a new assay format based on bioluminescence resonance energy transfer (BRET). Fusion of a NanoLuc luciferase (nLuc) unit to the N-terminus of the PTHR1 allows the direct detection of binding by an agonist peptide bearing a tetramethylrhodamine (TMR) unit. Affinity measurements from the BRET assay align well with results previously obtained via radioligand displacement. The BRET assay offers substantial operational benefits relative to affinity measurements involving radioactive compounds. The convenience of the new assay allowed us to explore several questions raised by earlier reports. For example, we show that although the first two residues of PTH(1-34) (the drug teriparatide) are critical for PTHR1 activation, these two residues contribute little or nothing to affinity. Comparisons among the well-studied agonists PTH(1-34), PTHrP(1-34), and "long-acting PTH" (LA-PTH) reveal that the high affinity of LA-PTH arises largely from a diminished rate constant for dissociation relative to the other two. A D-peptide recently reported to be comparable to PTH(1-34) as an agonist of the PTHR1 was found not to bind detectably to the receptor and to be a very weak agonist.
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Affiliation(s)
- Zhen Yu
- Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706 USA
| | - Brian P. Cary
- Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706 USA
| | - Tae Wook Kim
- Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706 USA
| | - Kevin D. Nguyen
- Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706 USA
| | - Thomas J. Gardella
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114 USA
| | - Samuel H. Gellman
- Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706 USA
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Kim MJ, Kim TW, Hahn HM, Lee IJ. Clinical use of perioperative magnetic resonance imaging-based breast volumetric analysis in final implant volume prediction for two-stage breast reconstruction. Ann Surg Treat Res 2022; 103:195-204. [PMID: 36304192 PMCID: PMC9582615 DOI: 10.4174/astr.2022.103.4.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/05/2022] [Accepted: 08/26/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose Breast volume is an important factor in breast reconstruction; however, the surgeon is expected to deliver the volume expectation with his aesthetic inspiration. Therefore, objective volumetry must be developed. This study aimed to conduct an MRI-based breast volumetric analysis. With periodic analysis of 2-stage breast reconstruction, we suggest the possibility of clinical use of breast volumetry in implant volume prediction. Methods This retrospective study included 140 patients who underwent unilateral 2-stage breast reconstruction (tissue expander followed by implant insertion) between January 1, 2017 and December 31, 2019. The MRI image was converted into a 3-dimensional image with a reconstruction program (A-VIEW, Coreline Soft). MRI image was obtained before the surgery and then at 1, 3, 6, 12, and 24 months postoperatively. The volume was automatically calculated. Results Compared with the preoperative volume, maximized volume and differences were noted at 1 month and minimized at 1 year. The correlation between MRI-based preoperative breast volumetry and the mastectomy specimen volume was 0.611. Volume difference between the MRI-based preoperative state and the implant volume showed a minimal difference at 1 year. The final implant size prediction formula was calculated using the 1-year postoperative volume (P < 0.001, R2 = 0.594). Conclusion To avoid breast reconstruction based solely on the surgeon’s subjective assessment, MRI-based breast volumetry could be a useful method to develop more scientific and objective breast reconstruction planning. We suggest a volume prediction formula that describes the relationship between the postoperative breast volume and the final breast implant size.
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Affiliation(s)
- Min Ji Kim
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Tae Wook Kim
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Hyung Min Hahn
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Il Jae Lee
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon, Korea
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Kim DH, Lee CM, Islam A, Choi DH, Jeong GW, Kim TW, Cho HW, Kim YB, Shah SHU, Park MJ, Kim CH, Lee HJ, Lee JW, Bang S, Bae TS, Park JB, Yu SM, Kang YC, Park J, Park M, Jeong Y, Lee SG, Jin JS, Kim KH, Sujak M, Moon SS, Park S, Song MK, Kim CS, Ryu SY. Efficient Photon Extraction in Top-Emission Organic Light-Emitting Devices Based on Ampicillin Microstructures. Adv Mater 2022; 34:e2202866. [PMID: 35700272 DOI: 10.1002/adma.202202866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/08/2022] [Indexed: 06/15/2023]
Abstract
The desire to enhance the efficiency of organic light-emitting devices (OLEDs) has driven to the investigation of advanced materials with fascinating properties. In this work, the efficiency of top-emission OLEDs (TEOLEDs) is enhanced by introducing ampicillin microstructures (Amp-MSs) with dual phases (α-/β-phase) that induce photoluminescence (PL) and electroluminescence (EL). Moreover, Amp-MSs can adjust the charge balance by Fermi level (EF ) alignment, thereby decreasing the leakage current. The decrease in the wave-guided modes can enhance the light outcoupling through optical scattering. The resulting TEOLED demonstrates a record-high external quantum efficiency (EQE) (maximum: 68.7% and average: 63.4% at spectroradiometer; maximum: 44.8% and average: 42.6% at integrating sphere) with a wider color gamut (118%) owing to the redshift of the spectrum by J-aggregation. Deconvolution of the EL intensities is performed to clarify the contribution of Amp-MSs to the device EQE enhancement (optical scattering by Amp-MSs: 17.0%, PL by radiative energy transfer: 9.1%, and EL by J-aggregated excitons: 4.6%). The proposed TEOLED outperforms the existing frameworks in terms of device efficiency.
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Affiliation(s)
- Dong Hyun Kim
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Chang Min Lee
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Amjad Islam
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Dong Hyun Choi
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Geon-Woo Jeong
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Tae Wook Kim
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Hyun Woo Cho
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Yeong Beom Kim
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Syed Hamad Ullah Shah
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Min Jae Park
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 339-770, Republic of Korea
| | - Hyun Jae Lee
- Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 339-770, Republic of Korea
| | - Jae Woo Lee
- Department of Electronics and Information Engineering, Korea University, Sejong, 30019, Korea
| | - Seain Bang
- Department of Electronics and Information Engineering, Korea University, Sejong, 30019, Korea
| | - Tae-Sung Bae
- Jeonju Center, Korea Basic Science Institute (KBSI), 20, Geonji-ro, Deokjin-gu, Jeonju, Jeollabuk-do, 54907, Republic of Korea
| | - Jong Bae Park
- Jeonju Center, Korea Basic Science Institute (KBSI), 20, Geonji-ro, Deokjin-gu, Jeonju, Jeollabuk-do, 54907, Republic of Korea
| | - Seung Min Yu
- Jeonju Center, Korea Basic Science Institute (KBSI), 20, Geonji-ro, Deokjin-gu, Jeonju, Jeollabuk-do, 54907, Republic of Korea
| | - Yong-Cheol Kang
- Department of Chemistry, Pukyong National University, 45 Yongso-Ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Juyun Park
- Department of Chemistry, Pukyong National University, 45 Yongso-Ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Myeongkee Park
- Department of Chemistry, Pukyong National University, 45 Yongso-Ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Yeonsu Jeong
- Department of Chemistry, Pukyong National University, 45 Yongso-Ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Sang Geul Lee
- Daegu Center, Korea Basic Science Institute (KBSI), 80, Daehakro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Jong Sung Jin
- Busan Center, Korea Basic Science Institute (KBSI), Busan, 46742, Republic of Korea
| | - Kyoung-Ho Kim
- Department of Physics, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Muhammad Sujak
- Department of Physics, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Surk-Suik Moon
- Department of Chemistry, College of Natural Science, Kongju National University, Gongju, 32588, Republic of Korea
| | - Sanghyuk Park
- Department of Chemistry, College of Natural Science, Kongju National University, Gongju, 32588, Republic of Korea
| | - Myung Kwan Song
- Surface Technology Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Chang-Su Kim
- Surface Technology Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Seung Yoon Ryu
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- Department of Applied Physics, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
- E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
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Yoshino T, Van Cutsem E, Li J, Shen L, Kim TW, Sriuranpong V, Xuereb L, Aubel P, Fougeray R, Cattan V, Amellal N, Ohtsu A, Mayer RJ. Effect of KRAS codon 12 or 13 mutations on survival with trifluridine/tipiracil in pretreated metastatic colorectal cancer: a meta-analysis. ESMO Open 2022; 7:100511. [PMID: 35688062 PMCID: PMC9271514 DOI: 10.1016/j.esmoop.2022.100511] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 11/19/2022] Open
Abstract
Background KRAS gene mutations can predict prognosis and treatment response in patients with metastatic colorectal cancer (mCRC). Methods We undertook a meta-analysis of three randomized, placebo-controlled trials (RECOURSE, TERRA and J003) to investigate the impact of KRAS mutations in codons 12 or 13 on overall survival (OS) and progression-free survival in patients receiving trifluridine/tipiracil (FTD/TPI) for refractory mCRC. Results A total of 1375 patients were included, of whom 478 had a KRAS codon 12 mutation and 130 had a KRAS codon 13 mutation. In univariate analyses, the absence of a KRAS codon 12 mutation was found to significantly increase the OS benefit of FTD/TPI relative to placebo compared with the presence of the mutation {hazard ratio (HR), 0.62 [95% confidence interval (CI): 0.53-0.72] versus 0.86 (0.70-1.05), respectively; interaction P = 0.0206}. Multivariate analyses showed that taking confounding factors into account reduced the difference in treatment effect between the presence and the absence of KRAS codon 12 mutations, confirming that treatment benefit was maintained in patients with [HR, 0.73 (95% CI: 0.59-0.89)] and without [HR, 0.63 (95% CI: 0.54-0.74)] codon 12 mutations (interaction P = 0.2939). KRAS mutations in codon 13 did not reduce the OS benefit of FTD/TPI relative to placebo, and, furthermore, KRAS mutations at either codon 12 or codon 13 did not affect the progression-free survival benefit. Conclusions Treatment with FTD/TPI produced a survival benefit, relative to placebo, regardless of KRAS codon 12 or 13 mutation status in patients with previously treated mCRC. KRAS mutations are associated with negative outcomes in patients with mCRC; codon 12 and 13 mutations are the most common. FTD/TPI was associated with longer median overall survival vs placebo both in patients with wild-type KRAS and mutant KRAS. FTD/TPI produced a survival benefit, relative to placebo, regardless of KRAS codon 12 or 13 mutation status in this patient group.
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Affiliation(s)
- T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan.
| | - E Van Cutsem
- Digestive Oncology, University Hospitals Gasthuisberg and KU Leuven, Leuven, Belgium
| | - J Li
- Department of Oncology, Shanghai East Hospital Tongji University, Shanghai, China
| | - L Shen
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, Beijing, China
| | - T W Kim
- Department of Oncology, Asan Medical Center, Seoul, Republic of Korea
| | - V Sriuranpong
- Division of Medical Oncology, Department of Internal Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - L Xuereb
- R&D Department, Institut de Recherches Internationales Servier, Suresnes, France
| | - P Aubel
- R&D Department, Institut de Recherches Internationales Servier, Suresnes, France
| | - R Fougeray
- R&D Department, Institut de Recherches Internationales Servier, Suresnes, France
| | - V Cattan
- R&D Department, Institut de Recherches Internationales Servier, Suresnes, France
| | - N Amellal
- R&D Department, Institut de Recherches Internationales Servier, Suresnes, France
| | - A Ohtsu
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - R J Mayer
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, USA
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Jang J, Ra HS, Ahn J, Kim TW, Song SH, Park S, Taniguch T, Watanabe K, Lee K, Hwang DK. Fermi-Level Pinning-Free WSe 2 Transistors via 2D Van der Waals Metal Contacts and Their Circuits. Adv Mater 2022; 34:e2109899. [PMID: 35306686 DOI: 10.1002/adma.202109899] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Precise control over the polarity of transistors is a key necessity for the construction of complementary metal-oxide-semiconductor circuits. However, the polarity control of 2D transistors remains a challenge because of the lack of a high-work-function electrode that completely eliminates Fermi-level pinning at metal-semiconductor interfaces. Here, a creation of clean van der Waals contacts is demonstrated, wherein a metallic 2D material, chlorine-doped SnSe2 (Cl-SnSe2 ), is used as the high-work-function contact, providing an interface that is free of defects and Fermi-level pinning. Such clean contacts made from Cl-SnSe2 can pose nearly ideal Schottky barrier heights, following the Schottky-Mott limit and thus permitting polarity-controllable transistors. With the integration of Cl-SnSe2 as contacts, WSe2 transistors exhibit pronounced p-type characteristics, which are distinctly different from those of the devices with evaporated metal contacts, where n-type transport is observed. Finally, this ability to control the polarity enables the fabrication of functional logic gates and circuits, including inverter, NAND, and NOR.
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Affiliation(s)
- Jisu Jang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Hyun-Soo Ra
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jongtae Ahn
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Tae Wook Kim
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Seung Ho Song
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Korea
| | - Soohyung Park
- Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Takashi Taniguch
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Kenji Watanabe
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Kimoon Lee
- Department of Physics, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Do Kyung Hwang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
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Kim TW, Kim SH, Shim JW, Hwang DK. Organic photodiode with dual functions of indoor photovoltaic and high-speed photodetector. Front Optoelectron 2022; 15:18. [PMID: 36637537 PMCID: PMC9756234 DOI: 10.1007/s12200-022-00024-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/10/2022] [Indexed: 06/17/2023]
Abstract
Energy harvesting and light detection are key technologies in various emerging optoelectronic applications. The high absorption capability and bandgap tunability of organic semiconductors make them promising candidates for such applications. Herein, a poly(3-hexylthiophene-2,5-diyl) (P3HT):indene-C60 bisadduct (ICBA) bulk heterojunction-based organic photodiode (OPD) was reported, demonstrating dual functionality as an indoor photovoltaic (PV) and as a high-speed photodetector. This OPD demonstrated decent indoor PV performance with a power conversion efficiency (PCE) of (11.6 ± 0.5)% under a light emitting diode (LED) lamp with a luminance of 1000 lx. As a photodetector, this device exhibited a decent photoresponsivity of 0.15 A/W (green light) with an excellent linear dynamic range (LDR) of over 127 dB within the optical power range of 3.74 × 10-7 to 9.6 × 10-2 W/cm2. Furthermore, fast photoswitching behaviors could be observed with the rising/falling times of 14.5/10.4 μs and a cutoff (3 dB) frequency of 37 kHz. These results might pave the way for further development of organic optoelectronic applications.
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Affiliation(s)
- Tae Wook Kim
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Sung Hyun Kim
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jae Won Shim
- School of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea.
| | - Do Kyung Hwang
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea.
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Hahn HM, Kim TW, Thai DQ, Lee IJ. Impact of perioperative vasopressors on lower extremity free flap reconstruction. Microsurgery 2022; 42:470-479. [PMID: 35175656 DOI: 10.1002/micr.30870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/22/2021] [Accepted: 01/19/2022] [Indexed: 11/11/2022]
Abstract
PURPOSE Free tissue transfer is a treatment option for soft tissue defects of the lower extremity. For a successful outcome, it is necessary to evaluate the vessel condition and blood flow patency. The administration of a vasopressor could impact the survival rate of free tissue transfer; however, there is a lack of studies on vasopressor use and lower extremity reconstruction. This study aimed to investigate the relationship between the use of a vasopressor and outcomes of free tissue transfer in lower extremity reconstruction. METHODS This retrospective, observational study was conducted between March 2010 and February 2019. Data were divided into intraoperative and postoperative variables according to the administration time. Data on patient demographics, risk factors, details of reconstruction, flap outcomes, and duration of intensive care unit (ICU) stay were obtained. Binary logistic regression models were computed to determine the association between flap outcome and vasopressor administration. RESULTS Of the 338 patients, 186 were administered a vasopressor. Intraoperative and postoperative vasopressor use was not related to the overall complication rate (odds ratio, 1.547; 95% confidence interval, 0.830-2.882; p = .169). Low-intraoperative levels of hemoglobin were associated with the overall complication rate. Postoperative vasopressor administration was associated with prolonged ICU stay. CONCLUSION Our results showed that the intraoperative and postoperative use of vasopressors was not significantly associated with the success rate of free flaps. Future studies investigating the relationship between the dose, type, and duration of vasopressors and the complication rate following free tissue transfer are warranted.
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Affiliation(s)
- Hyung Min Hahn
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon-si, South Korea
| | - Tae Wook Kim
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon-si, South Korea
| | - Duy Quang Thai
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon-si, South Korea
| | - Il Jae Lee
- Department of Plastic and Reconstructive Surgery, Ajou University School of Medicine, Suwon-si, South Korea
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Ra HS, Ahn J, Jang J, Kim TW, Song SH, Jeong MH, Lee SH, Yoon T, Yoon TW, Kim S, Taniguch T, Watanabe K, Song YJ, Lee JS, Hwang DK. An Asymmetry Field-Effect Phototransistor for Solving Large Exciton Binding Energy of 2D TMDCs. Adv Mater 2022; 34:e2107468. [PMID: 34865265 DOI: 10.1002/adma.202107468] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/02/2021] [Indexed: 06/13/2023]
Abstract
The probing of fundamental photophysics is a key prerequisite for the construction of diverse optoelectronic devices and circuits. To date, though, photocarrier dynamics in 2D materials remains unclear, plagued primarily by two issues: a large exciton binding energy, and the lack of a suitable system that enables the manipulation of excitons. Here, a WSe2 -based phototransistor with an asymmetric split-gate configuration is demonstrated, which is named the "asymmetry field-effect phototransistor" (AFEPT). This structure allows for the effective modulation of the electric-field profile across the channel, thereby providing a standard device platform for exploring the photocarrier dynamics of the intrinsic WSe2 layer. By controlling the electric field, this work the spatial evolution of the photocurrent is observed, notably with a strong signal over the entire WSe2 channel. Using photocurrent and optical spectroscopy measurements, the physical origin of the novel photocurrent behavior is clarified and a room-temperature exciton binding energy of 210 meV is determined with the device. In the phototransistor geometry, lateral p-n junctions serve as a simultaneous pathway for both photogenerated electrons and holes, reducing their recombination rate and thus enhancing photodetection. The study establishes a new device platform for both fundamental studies and technological applications.
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Affiliation(s)
- Hyun-Soo Ra
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jongtae Ahn
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jisu Jang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nano & Information, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
| | - Tae Wook Kim
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Electrical Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Seung Ho Song
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Min-Hye Jeong
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Sang-Hyeon Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Taegeun Yoon
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Tea Woong Yoon
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Seungsoo Kim
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Takashi Taniguch
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Kenji Watanabe
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, 305-0044, Japan
| | - Young Jae Song
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Jong-Soo Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Do Kyung Hwang
- Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Nano & Information, KIST School, University of Science and Technology (UST), Seoul, 02792, Republic of Korea
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16
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Choi DK, Kim DH, Lee CM, Hafeez H, Sarker S, Yang JS, Chae HJ, Jeong GW, Choi DH, Kim TW, Yoo S, Song J, Ma BS, Kim TS, Kim CH, Lee HJ, Lee JW, Kim D, Bae TS, Yu SM, Kang YC, Park J, Kim KH, Sujak M, Song M, Kim CS, Ryu SY. Author Correction: Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO 3/Au/MoO 3 electrode with encapsulation. Nat Commun 2021; 12:7355. [PMID: 34916506 PMCID: PMC8677734 DOI: 10.1038/s41467-021-27720-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Dae Keun Choi
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Dong Hyun Kim
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Chang Min Lee
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hassan Hafeez
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea. .,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.
| | - Subrata Sarker
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Jun Su Yang
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hyung Ju Chae
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Geon-Woo Jeong
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Dong Hyun Choi
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Tae Wook Kim
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea.,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea.,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Seunghyup Yoo
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jinouk Song
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Boo Soo Ma
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Taek-Soo Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hyun Jae Lee
- Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Jae Woo Lee
- Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, Republic of Korea
| | - Donghyun Kim
- Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, Republic of Korea
| | - Tae-Sung Bae
- Jeonju Center, Korea Basic Science Institute (KBSI), Analysis & Researcher Division, Jeollabuk-do, Republic of Korea
| | - Seung Min Yu
- Jeonju Center, Korea Basic Science Institute (KBSI), Analysis & Researcher Division, Jeollabuk-do, Republic of Korea
| | - Yong-Cheol Kang
- Department of Chemistry, Pukyong National University 45 Yongso-Ro, Nam-gu, Busan, Republic of Korea
| | - Juyun Park
- Department of Chemistry, Pukyong National University 45 Yongso-Ro, Nam-gu, Busan, Republic of Korea
| | - Kyoung-Ho Kim
- Department of Physics, Chungbuk National University, Cheongju, Republic of Korea
| | - Muhammad Sujak
- Department of Physics, Chungbuk National University, Cheongju, Republic of Korea
| | - Myungkwan Song
- Surface Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
| | - Chang-Su Kim
- Surface Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea.
| | - Seung Yoon Ryu
- Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea. .,Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea. .,E-ICT-Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea.
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17
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Keam B, Machiels JP, Kim HR, Licitra L, Golusinski W, Gregoire V, Lee YG, Belka C, Guo Y, Rajappa SJ, Tahara M, Azrif M, Ang MK, Yang MH, Wang CH, Ng QS, Wan Zamaniah WI, Kiyota N, Babu S, Yang K, Curigliano G, Peters S, Kim TW, Yoshino T, Pentheroudakis G. Pan-Asian adaptation of the EHNS-ESMO-ESTRO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with squamous cell carcinoma of the head and neck. ESMO Open 2021; 6:100309. [PMID: 34844180 PMCID: PMC8710460 DOI: 10.1016/j.esmoop.2021.100309] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 11/26/2022] Open
Abstract
The most recent version of the European Society for Medical Oncology (ESMO) Clinical Practice Guidelines for the diagnosis, treatment and follow-up of squamous cell carcinoma (SCC) of the oral cavity, larynx, oropharynx and hypopharynx was published in 2020. It was therefore decided by both the ESMO and the Korean Society of Medical Oncology (KSMO) to convene a special, virtual guidelines meeting in July 2021 to adapt the ESMO 2020 guidelines to consider the potential ethnic differences associated with the treatment of SCCs of the head and neck (SCCHN) in Asian patients. These guidelines represent the consensus opinions reached by experts in the treatment of patients with SCCHN (excluding nasopharyngeal carcinomas) representing the oncological societies of Korea (KSMO), China (CSCO), India (ISMPO), Japan (JSMO), Malaysia (MOS), Singapore (SSO) and Taiwan (TOS). The voting was based on scientific evidence and was independent of the current treatment practices and drug access restrictions in the different Asian countries. The latter was discussed when appropriate. This manuscript provides a series of expert recommendations (Clinical Practice Guidelines) which can be used to provide guidance to health care providers and clinicians for the optimisation of the diagnosis, treatment and management of patients with SCC of the oral cavity, larynx, oropharynx and hypopharynx across Asia.
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Affiliation(s)
- B Keam
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.
| | - J-P Machiels
- Service d'Oncologie Médicale, Institut Roi Albert II, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - H R Kim
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea
| | - L Licitra
- Head and Neck Cancer Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori and University of Milan, Milan, Italy
| | - W Golusinski
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, Poznan, Poland
| | - V Gregoire
- Department of Radiation Oncology, Centre Léon Bérard, Lyon, France
| | - Y G Lee
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - C Belka
- Department of Radiation Oncology, LMU Hospital, Munich, Germany
| | - Y Guo
- Department of Medical Oncology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - S J Rajappa
- Medical Oncology, Basavatarakam Indo American Cancer Hospital and Research Institute, Hyderabad, India
| | - M Tahara
- Department of Head and Neck Medical Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - M Azrif
- Clinical Oncology, Prince Court Medical Centre, Kuala Lumpur, Malaysia
| | - M K Ang
- Department of Medical Oncology, National Cancer Centre, Singapore, Singapore
| | - M-H Yang
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - C-H Wang
- Division of Hemato-oncology, Department of Internal Medicine, Keelung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Q S Ng
- Division of Medical Oncology, National Cancer Centre, Singapore, Singapore
| | - W I Wan Zamaniah
- Clinical Oncology Unit, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - N Kiyota
- Oncology/Hematology, Cancer Center, Kobe University Hospital, Kobe, Japan
| | - S Babu
- Department of Medical Oncology, Kidwai Memorial Institute of Oncology, Bangalore, India
| | - K Yang
- Department of Clinical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - G Curigliano
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy; Istituto Europeo di Oncologia, IRCCS, Milano, Italy
| | - S Peters
- Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - T W Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center East, Chiba, Japan
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18
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Ahn J, Ko K, Kyhm JH, Ra HS, Bae H, Hong S, Kim DY, Jang J, Kim TW, Choi S, Kang JH, Kwon N, Park S, Ju BK, Poon TC, Park MC, Im S, Hwang DK. Near-Infrared Self-Powered Linearly Polarized Photodetection and Digital Incoherent Holography Using WSe 2/ReSe 2 van der Waals Heterostructure. ACS Nano 2021; 15:17917-17925. [PMID: 34677045 DOI: 10.1021/acsnano.1c06234] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Polarization-sensitive photodetection has attracted considerable attention as an emerging technology for future optoelectronic applications such as three-dimensional (3D) imaging, quantum optics, and encryption. However, traditional photodetectors based on Si or III-V InGaAs semiconductors cannot directly detect polarized light without additional optical components. Herein, we demonstrate a self-powered linear-polarization-sensitive near-infrared (NIR) photodetector using a two-dimensional WSe2/ReSe2 van der Waals heterostructure. The WSe2/ReSe2 heterojunction photodiode with semivertical geometry exhibits excellent performance: an ideality factor of 1.67, a broad spectral photoresponse of 405-980 nm with a significant photovoltaic effect, outstanding linearity with a linear dynamic range wider than 100 dB, and rapid photoswitching behavior with a cutoff frequency up to 100 kHz. Strongly polarized excitonic transitions around the band edge in ReSe2 lead to significant 980 nm NIR linear-polarization-dependent photocurrent. This linear polarization sensitivity remains stable even after exposure to air for longer than five months. Furthermore, by leveraging the NIR (980 nm)-selective linear polarization detection of this photodiode under photovoltaic operation, we demonstrate digital incoherent holographic 3D imaging.
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Affiliation(s)
- Jongtae Ahn
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Van der Waals Materials Research Center, Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyul Ko
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Ji-Hoon Kyhm
- Quantum-functional Semiconductor Research Center, Dongguk University, Seoul 04620, Republic of Korea
| | - Hyun-Soo Ra
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Heesun Bae
- Van der Waals Materials Research Center, Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungjae Hong
- Van der Waals Materials Research Center, Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Dae-Yeon Kim
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jisu Jang
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Tae Wook Kim
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Sungwon Choi
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Ji-Hoon Kang
- Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
| | - Namhee Kwon
- Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Soohyung Park
- Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Byeong-Kwon Ju
- Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Ting-Chung Poon
- Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Min-Chul Park
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Seongil Im
- Van der Waals Materials Research Center, Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of Korea
| | - Do Kyung Hwang
- Center of Optoelectronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Nano & Information Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
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19
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Choi DK, Kim DH, Lee CM, Hafeez H, Sarker S, Yang JS, Chae HJ, Jeong GW, Choi DH, Kim TW, Yoo S, Song J, Ma BS, Kim TS, Kim CH, Lee HJ, Lee JW, Kim D, Bae TS, Yu SM, Kang YC, Park J, Kim KH, Sujak M, Song M, Kim CS, Ryu SY. Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO 3/Au/MoO 3 electrode with encapsulation. Nat Commun 2021; 12:2864. [PMID: 34001906 PMCID: PMC8128878 DOI: 10.1038/s41467-021-23203-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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] [Received: 10/05/2020] [Accepted: 04/13/2021] [Indexed: 02/03/2023] Open
Abstract
Stretchable organic light-emitting diodes are ubiquitous in the rapidly developing wearable display technology. However, low efficiency and poor mechanical stability inhibit their commercial applications owing to the restrictions generated by strain. Here, we demonstrate the exceptional performance of a transparent (molybdenum-trioxide/gold/molybdenum-trioxide) electrode for buckled, twistable, and geometrically stretchable organic light-emitting diodes under 2-dimensional random area strain with invariant color coordinates. The devices are fabricated on a thin optical-adhesive/elastomer with a small mechanical bending strain and water-proofed by optical-adhesive encapsulation in a sandwiched structure. The heat dissipation mechanism of the thin optical-adhesive substrate, thin elastomer-based devices or silicon dioxide nanoparticles reduces triplet-triplet annihilation, providing consistent performance at high exciton density, compared with thick elastomer and a glass substrate. The performance is enhanced by the nanoparticles in the optical-adhesive for light out-coupling and improved heat dissipation. A high current efficiency of ~82.4 cd/A and an external quantum efficiency of ~22.3% are achieved with minimum efficiency roll-off.
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Affiliation(s)
- Dae Keun Choi
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Dong Hyun Kim
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Chang Min Lee
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hassan Hafeez
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Subrata Sarker
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Jun Su Yang
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hyung Ju Chae
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Geon-Woo Jeong
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Dong Hyun Choi
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Tae Wook Kim
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Seunghyup Yoo
- grid.37172.300000 0001 2292 0500School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jinouk Song
- grid.37172.300000 0001 2292 0500School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Boo Soo Ma
- grid.37172.300000 0001 2292 0500Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Taek-Soo Kim
- grid.37172.300000 0001 2292 0500Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Chul Hoon Kim
- grid.222754.40000 0001 0840 2678Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Hyun Jae Lee
- grid.222754.40000 0001 0840 2678Department of Advanced Materials Chemistry, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea
| | - Jae Woo Lee
- grid.222754.40000 0001 0840 2678Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, Republic of Korea
| | - Donghyun Kim
- grid.222754.40000 0001 0840 2678Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, Republic of Korea
| | - Tae-Sung Bae
- grid.410885.00000 0000 9149 5707Jeonju Center, Korea Basic Science Institute (KBSI), Analysis & Researcher Division, Jeollabuk-do, Republic of Korea
| | - Seung Min Yu
- grid.410885.00000 0000 9149 5707Jeonju Center, Korea Basic Science Institute (KBSI), Analysis & Researcher Division, Jeollabuk-do, Republic of Korea
| | - Yong-Cheol Kang
- grid.412576.30000 0001 0719 8994Department of Chemistry, Pukyong National University 45 Yongso-Ro, Nam-gu, Busan, Republic of Korea
| | - Juyun Park
- grid.412576.30000 0001 0719 8994Department of Chemistry, Pukyong National University 45 Yongso-Ro, Nam-gu, Busan, Republic of Korea
| | - Kyoung-Ho Kim
- grid.254229.a0000 0000 9611 0917Department of Physics, Chungbuk National University, Cheongju, Republic of Korea
| | - Muhammad Sujak
- grid.254229.a0000 0000 9611 0917Department of Physics, Chungbuk National University, Cheongju, Republic of Korea
| | - Myungkwan Song
- grid.410902.e0000 0004 1770 8726Surface Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
| | - Chang-Su Kim
- grid.410902.e0000 0004 1770 8726Surface Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
| | - Seung Yoon Ryu
- grid.222754.40000 0001 0840 2678Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678Department of Applied Physics, Korea University Sejong Campus, Sejong City, Republic of Korea ,grid.222754.40000 0001 0840 2678E-ICT–Culture-Sports Convergence Track, Korea University Sejong Campus, Sejong City, Republic of Korea
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Kim TW, Ra HS, Ahn J, Jang J, Taniguchi T, Watanabe K, Shim JW, Lee YT, Hwang DK. Frequency Doubler and Universal Logic Gate Based on Two-Dimensional Transition Metal Dichalcogenide Transistors with Low Power Consumption. ACS Appl Mater Interfaces 2021; 13:7470-7475. [PMID: 33528986 DOI: 10.1021/acsami.0c21222] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Two-dimensional transition metal dichalcogenide semiconductors are very promising candidates for future electronic applications with low power consumption due to a low leakage current and high on-off current ratio. In this study, we suggest a complementary circuit consisting of ambipolar WSe2 and n-MoS2 field-effect transistors (FETs), which demonstrate dual functions of a frequency doubler and single inversion AND (SAND) logic gate. In order to reduce the power consumption, a high-quality thin h-BN single crystal is used as a gate dielectric that leads to a low operating voltage of less than 5 V. By combining the low operating voltage with a low operating current in the complementary circuit, a low power consumption of 300 nW (a minimum of 10 pW) has been achieved, which is a significant improvement compared to the tens of μW consumed by a graphene channel. The complementary circuit shows the effective frequency doubling of the input with a dynamic range from 20 to 100 Hz. Furthermore, this circuit satisfies all the truth tables of a SAND logic gate that can be used as a universal logic gate like NAND. Considering that the NAND logic gate generally consists of four transistors, it is significantly advantageous to implement the equivalent circuit SAND logic gate with only two FETs. Our results open up possibilities for analog- and logic-circuit applications based on low-dimensional semiconductors.
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Affiliation(s)
- Tae Wook Kim
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
- Department of Electronic Engineering, Korea University, Seoul 02841, Korea
| | - Hyun Soo Ra
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Jongtae Ahn
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Jisu Jang
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
- Division of Nano & Information, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
| | - Takashi Taniguchi
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
| | - Kenji Watanabe
- Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
| | - Jae Won Shim
- Department of Electronic Engineering, Korea University, Seoul 02841, Korea
| | - Young Tack Lee
- Department of Electronic Engineering, Inha University, Incheon 22212, Korea
| | - Do Kyung Hwang
- Center of Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
- Division of Nano & Information, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea
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Lee HY, Nam Y, Choi WS, Kim TW, Lee J, Sohn UD. The hepato-protective effect of eupatilin on an alcoholic liver disease model of rats. Korean J Physiol Pharmacol 2020; 24:385-394. [PMID: 32830145 PMCID: PMC7445478 DOI: 10.4196/kjpp.2020.24.5.385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 12/11/2022]
Abstract
ABSTRACT Eupatilin is known to possess anti-apoptotic, anti-oxidative, and anti-inflammatory properties. We report here that eupatilin has a protective effect on the ethanol-induced injury in rats. Sprague–Dawley rats were divided into 6 groups: control, vehicle, silymarin, eupatilin 10 mg/kg, eupatilin 30 mg/kg, and eupatilin 100 mg/kg. Plasma levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were analyzed to determine the extent of liver damage. Total cholesterol (TC) and triglycerides (TG) were analyzed to determine the level of liver steatosis. Malondialdehyde level, superoxide dismutase (SOD) activity, and glutathione (GSH) level were analyzed to determine the extent of oxidative stress. Tumor necrosis factor (TNF)-α and interleukin (IL)-1β were quantified to verify the degree of inflammation. Based on our findings, chronic alcohol treatment significantly changed the serum indexes and liver indicators of the model rats, which were significantly improved by eupatilin treatment. Rats in the eupatilin-treatment group showed reduced levels of AST, ALT, TG, TC, TNF-α, and IL-1β, increased SOD activity and GSH levels, and improved overall physiology compared to the alcoholic liver disease model rats. H&E staining also verified the eupatilin-mediated improvement in liver injury. In conclusion, eupatilin inhibits alcohol-induced liver injury via its antioxidant and anti-inflammatory effects.
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Affiliation(s)
- Hak Yeong Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Yoonjin Nam
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Won Seok Choi
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Tae Wook Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Jaehwi Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Uy Dong Sohn
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
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23
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Ahn J, Kim TY, Kim TW, Jeong BO. Learning Curve for Open Reduction and Internal Fixation of Displaced Intra-articular Calcaneal Fracture by Extensile Lateral Approach Using the Cumulative Summation Control Chart. Foot Ankle Int 2019; 40:1052-1059. [PMID: 31161791 DOI: 10.1177/1071100719850149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Open reduction and internal fixation (ORIF) of displaced intra-articular calcaneal fracture (DIACF) by extensile lateral approach is widely used but is technically challenging. In this study, the learning curve for ORIF of DIACF by extensile lateral approach was investigated. METHODS Between March 2014 and July 2018, 45 cases consisting of 40 patients underwent operative treatment for DIACF by the extensile lateral approach performed in all instances by a single surgeon. A moving average and cumulative summation control chart (CUSUM) were used for learning curve analyses. Operative failure was defined when at least 1 of the following parameters were unsatisfactory: reduction of Gissane angle and Böhler angle, posterior facet congruency, calcaneal width, subfibular impingement, axial alignment, or calcaneocuboid joint congruency. RESULTS The mean operating time was 117.4 minutes. Regarding the quality of reduction, the mean preoperative sum of the 7 parameters was 5.1 and improved to 0.6 postoperatively. The CUSUM for operative success peaked in the 20th case. The CUSUM and moving average graphics of operating time peaked at the 9th case and registered nadirs at the 34th case, with slight ascent and decent. The operating time for 20 cases in phase 1 (1-20) and for 25 cases in phase 2 (21-45) of the learning curve did not differ significantly. There was no statistical difference in the severity of fracture pattern. By comparison, in phase 2, patients showed a significantly better postoperative reduction quality. CONCLUSION As indicated by multidimensional statistical analyses, primary technical competence in improving the reduction quality of DIACF was achieved after the initial learning period with 20 cases. After the learning curve for ORIF of DIACF, a better reduction quality in the sum of reduction parameters was observed. LEVEL OF EVIDENCE Level III, comparative series.
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Affiliation(s)
- Jungtae Ahn
- 1 Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Seoul, Seoul, Korea
| | - Tae Yong Kim
- 1 Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Seoul, Seoul, Korea
| | - Tae Wook Kim
- 1 Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Seoul, Seoul, Korea
| | - Bi O Jeong
- 1 Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Seoul, Seoul, Korea
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Kwon KW, Nam Y, Choi WS, Kim TW, Kim GM, Sohn UD. Hepatoprotective effect of sodium hydrosulfide on hepatic encephalopathy in rats. Korean J Physiol Pharmacol 2019; 23:263-270. [PMID: 31297010 PMCID: PMC6609266 DOI: 10.4196/kjpp.2019.23.4.263] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/17/2019] [Accepted: 06/03/2019] [Indexed: 12/16/2022]
Abstract
Hydrogen sulfide is well-known to exhibit anti-inflammatory and cytoprotective activities, and also has protective effects in the liver. This study aimed to examine the protective effect of hydrogen sulfide in rats with hepatic encephalopathy, which was induced by mild bile duct ligation. In this rat model, bile ducts were mildly ligated for 26 days. Rats were treated for the final 5 days with sodium hydrosulfide (NaHS). NaHS (25 µmol/kg), 0.5% sodium carboxymethyl cellulose, or silymarin (100 mg/kg) was administered intraperitoneally once per day for 5 consecutive days. Mild bile duct ligation caused hepatotoxicity and inflammation in rats. Intraperitoneal NaHS administration reduced levels of aspartate aminotransferase and alanine aminotransferase, which are indicators of liver disease, compared to levels in the control mild bile duct ligation group. Levels of ammonia, a major causative factor of hepatic encephalopathy, were also significantly decreased. Malondialdehyde, myeloperoxidase, catalase, and tumor necrosis factor-α levels were measured to confirm antioxidative and anti-inflammatory effects. N-Methyl-D-aspartic acid (NMDA) receptors with neurotoxic activity were assessed for subunit NMDA receptor subtype 2B. Based on these data, NaHS is suggested to exhibit hepatoprotective effects and guard against neurotoxicity through antioxidant and anti-inflammatory actions.
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Affiliation(s)
- Kyoung Wan Kwon
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Yoonjin Nam
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Won Seok Choi
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Tae Wook Kim
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Geon Min Kim
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
| | - Uy Dong Sohn
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Korea
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Yoshino T, Arnold D, Taniguchi H, Pentheroudakis G, Yamazaki K, Xu RH, Kim TW, Ismail F, Tan IB, Yeh KH, Grothey A, Zhang S, Ahn JB, Mastura MY, Chong D, Chen LT, Kopetz S, Eguchi-Nakajima T, Ebi H, Ohtsu A, Cervantes A, Muro K, Tabernero J, Minami H, Ciardiello F, Douillard JY. Pan-Asian adapted ESMO consensus guidelines for the management of patients with metastatic colorectal cancer: a JSMO-ESMO initiative endorsed by CSCO, KACO, MOS, SSO and TOS. Ann Oncol 2019; 29:44-70. [PMID: 29155929 DOI: 10.1093/annonc/mdx738] [Citation(s) in RCA: 364] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The most recent version of the European Society for Medical Oncology (ESMO) consensus guidelines for the treatment of patients with metastatic colorectal cancer (mCRC) was published in 2016, identifying both a more strategic approach to the administration of the available systemic therapy choices, and a greater emphasis on the use of ablative techniques, including surgery. At the 2016 ESMO Asia Meeting, in December 2016, it was decided by both ESMO and the Japanese Society of Medical Oncology (JSMO) to convene a special guidelines meeting, endorsed by both ESMO and JSMO, immediately after the JSMO 2017 Annual Meeting. The aim was to adapt the ESMO consensus guidelines to take into account the ethnic differences relating to the toxicity as well as other aspects of certain systemic treatments in patients of Asian ethnicity. These guidelines represent the consensus opinions reached by experts in the treatment of patients with mCRC identified by the Presidents of the oncological societies of Japan (JSMO), China (Chinese Society of Clinical Oncology), Korea (Korean Association for Clinical Oncology), Malaysia (Malaysian Oncological Society), Singapore (Singapore Society of Oncology) and Taiwan (Taiwan Oncology Society). The voting was based on scientific evidence and was independent of both the current treatment practices and the drug availability and reimbursement situations in the individual participating Asian countries.
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Affiliation(s)
- T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - D Arnold
- CUF Hospitals Cancer Centre, Lisbon, Portugal
| | - H Taniguchi
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - G Pentheroudakis
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece
| | - K Yamazaki
- Division of Gastrointestinal Oncology, Shizuoka Cancer Center, Shizuoka, Japan
| | - R-H Xu
- Department of Medical Oncology, Sun Yat-Sen University (SYSU) Cancer Center, Guangzhou, China
| | - T W Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - F Ismail
- Department of Radiotherapy & Oncology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - I B Tan
- Division of Medical Oncology, National Cancer Centre, Singapore, Singapore
| | - K-H Yeh
- Department of Oncology, National Taiwan University Hospital, and Cancer Research Center, National Taiwan University College of Medicine, Taipei, Taiwan
| | - A Grothey
- Division of Medical Oncology, Mayo Clinic Cancer Center, Rochester, USA
| | - S Zhang
- Cancer Institute, Zhejiang University, Hangzhou, China
| | - J B Ahn
- Division of Oncology, Department of Internal Medicine, Yonsei Cancer Center, Seoul, Korea
| | - M Y Mastura
- Pantai Cancer Institute, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - D Chong
- Division of Medical Oncology, National Cancer Centre, Singapore, Singapore
| | - L-T Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - S Kopetz
- Department of Gastrointestinal Medical Oncology, MD Anderson Cancer Centre, Houston, USA
| | - T Eguchi-Nakajima
- Department of Clinical Oncology, School of Medicine, St. Marianna University, Kanagawa, Japan
| | - H Ebi
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - A Ohtsu
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - A Cervantes
- CIBERONC, Department of Medical Oncology, Institute of Health Research, INCLIVIA, University of Valencia, Valencia, Spain
| | - K Muro
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - J Tabernero
- Medical Oncology Department, Vall d' Hebron University Hospital, Vall d'Hebron Institute of Oncology (V.H.I.O.), Barcelona, Spain
| | - H Minami
- Department of Medical Oncology and Hematology, Kobe University Hospital, Kobe, Japan
| | - F Ciardiello
- Division of Medical Oncology, Seconda Università di Napoli, Naples, Italy
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Yoshino T, Portnoy DC, Obermannová R, Bodoky G, Prausová J, Garcia-Carbonero R, Ciuleanu T, García-Alfonso P, Cohn AL, Van Cutsem E, Yamazaki K, Lonardi S, Muro K, Kim TW, Yamaguchi K, Grothey A, O'Connor J, Taieb J, Wijayawardana SR, Hozak RR, Nasroulah F, Tabernero J. Biomarker analysis beyond angiogenesis: RAS/RAF mutation status, tumour sidedness, and second-line ramucirumab efficacy in patients with metastatic colorectal carcinoma from RAISE-a global phase III study. Ann Oncol 2019; 30:124-131. [PMID: 30339194 PMCID: PMC6336001 DOI: 10.1093/annonc/mdy461] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [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] [Indexed: 12/17/2022] Open
Abstract
Background : Second-line treatment with ramucirumab+FOLFIRI improved overall survival (OS) versus placebo+FOLFIRI for patients with metastatic colorectal carcinoma (CRC) [hazard ratio (HR)=0.84, 95% CI 0.73-0.98, P = 0.022]. Post hoc analyses of RAISE patient data examined the association of RAS/RAF mutation status and the anatomical location of the primary CRC tumour (left versus right) with efficacy parameters. Patients and methods Patient tumour tissue was classified as BRAF mutant, KRAS/NRAS (RAS) mutant, or RAS/BRAF wild-type. Left-CRC was defined as the splenic flexure, descending and sigmoid colon, and rectum; right-CRC included transverse, ascending colon, and cecum. Results RAS/RAF mutation status was available for 85% of patients (912/1072) and primary tumour location was known for 94.4% of patients (1012/1072). A favourable and comparable ramucirumab treatment effect was observed for patients with RAS mutations (OS HR = 0.86, 95% CI 0.71-1.04) and patients with RAS/BRAF wild-type tumours (OS HR = 0.86, 95% CI 0.64-1.14). Among the 41 patients with BRAF-mutated tumours, the ramucirumab benefit was more notable (OS HR = 0.54, 95% CI 0.25-1.13), although, as with the other genetic sub-group analyses, differences were not statistically significant. Progression-free survival (PFS) data followed the same trend. Treatment-by-mutation status interaction tests (OS P = 0.523, PFS P = 0.655) indicated that the ramucirumab benefit was not statistically different among the mutation sub-groups, although the small sample size of the BRAF group limited the analysis. Addition of ramucirumab to FOLFIRI improved left-CRC median OS by 2.5 month over placebo (HR = 0.81, 95% CI 0.68-0.97); median OS for ramucirumab-treated patients with right-CRC was 1.1 month over placebo (HR = 0.97, 95% CI 0.75-1.26). The treatment-by-sub-group interaction was not statistically significant for tumour sidedness (P = 0.276). Conclusions In the RAISE study, the addition of ramucirumab to FOLFIRI improved patient outcomes, regardless of RAS/RAF mutation status, and tumour sidedness. Ramucirumab treatment provided a numerically substantial benefit in BRAF-mutated tumours, although the P-values were not statistically significant. ClinicalTrials.gov number NCT01183780.
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Affiliation(s)
- T Yoshino
- National Cancer Center Hospital East, Kashiwa, Japan.
| | | | | | - G Bodoky
- St. Laszlo Hospital, Budapest, Hungary
| | - J Prausová
- Fakultni Nemocnice v MOTOLE, Prague, Czech Republic
| | - R Garcia-Carbonero
- Hospital Universitario Doce de Octubre, IIS imas12, UCM, CNIO, CIBERONC, Madrid, Spain
| | - T Ciuleanu
- Institutul Oncologic Ion Chiricuta and UMF Iuliu Hatieganu, Cluj-Napoca, Romania
| | | | - A L Cohn
- Rocky Mountain Cancer Center, LLP, Denver, USA
| | - E Van Cutsem
- Univ Hospital Gasthuisberg Leuven and KU Leuven, Leuven, Belgium
| | | | - S Lonardi
- Istituto Oncologico Veneto-IRCCS, Padova, Italy
| | - K Muro
- Department of Clinical Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - T W Kim
- Asan Medical Center, University of Ulsan, Seoul, Republic of Korea
| | - K Yamaguchi
- The Cancer Institute Hospital of JFCR, Tokyo, Japan
| | | | - J O'Connor
- Instituto Alexander Fleming, Buenos Aires, Argentina
| | - J Taieb
- Sorbonne Paris Cité, Paris Descartes University, Georges Pompidou European Hospital, Paris, France
| | | | - R R Hozak
- Eli Lilly and Company, Indianapolis, USA
| | - F Nasroulah
- Eli Lilly and Company, Buenos Aires, Argentina
| | - J Tabernero
- Vall d'Hebron University Hospital and Institute of Oncology (VHIO), Universitat Autònoma de Barcelona, CIBERONC, Barcelona, Spain
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Cho NS, Nam JH, Hong SJ, Kim TW, Lee MG, Ahn JT, Rhee YG. Radiologic Comparison of Humeral Position according to the Implant Designs Following Reverse Shoulder Arthroplasty: Analysis between Medial Glenoid/Medial Humerus, Lateral Glenoid/Medial Humerus, and Medial Glenoid/Lateral Humerus Designs. Clin Shoulder Elb 2018; 21:192-199. [PMID: 33330176 PMCID: PMC7726398 DOI: 10.5397/cise.2018.21.4.192] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 11/25/2022] Open
Abstract
Background The currently available reverse shoulder arthroplasty (RSA) designs can be classified into medial glenoid/medial humerus (MGMH), lateral glenoid/medial humerus (LGMH), and medial glenoid/lateral humerus (MGLH) prosthesis designs. The purpose of this study was to radiologically analyze the effect of different RSA designs on humeral position following RSA. Methods A total of 50 patients who underwent primary RSA were retrospectively analyzed. Among 50 patients, 33 patients (group A: MGMH) underwent RSA with Aequalis system (Wright, Inc, Bloomington, MN, USA), 6 (group B: LGMH) with Aequalis system using bony increased offset, and 11 (group C: MGLH) with Aequalis Ascend Flex system. The acromiohumeral distance, acromioepiphyseal distance (AED), lateral humeral offset (LHO), LHO from the center of rotation (LHOCOR), and deltoid length were radiologically measured to quantify the distalization and lateralization of the humerus. Results The increment in postoperative AED was 19.92 ± 3.93 mm in group A, 24.52 ± 5.25 mm in group B, and 25.97 ± 5.29 mm in group C, respectively (p=0.001). The increment in postoperative LHO was 0.13 ± 6.30 mm, 8.00 ± 12.14 mm, and 7.42 ± 6.88 mm, respectively (p=0.005). The increment in postoperative LHOCOR was 20.76 ± 6.06 mm, 22.04 ± 5.15 mm, and 28.11 ± 4.14 mm, respectively (p=0.002). Conclusions The radiologic analysis of the effect of different RSA designs on humeral position following RSA showed significant differences in the increment in postoperative AED, LHO, and LHOCOR between the 3 groups. Therefore, MGLH design seems to be more effective for humeral distalization and lateralization compared to original Grammont design.
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Affiliation(s)
- Nam Su Cho
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Ju Hyun Nam
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Se Jung Hong
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Tae Wook Kim
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Myeong Gu Lee
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Jung Tae Ahn
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Yong Girl Rhee
- Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea
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Abstract
Hypoxia results when the oxygen supply to rapidly growing tumors becomes inadequate to support various physiological processes. This plays a role in tumor metastasis and treatment resistance. Therefore, identifying tumor hypoxia can guide treatment planning and predict patient responses. However, hypoxic volumes are heterogeneously dispersed throughout a tumor, making it a challenge to pinpoint them with any degree of accuracy. Herein, we report the development of ratiometric hypoxia probe 1 (rHyP-1), which is a hypoxia-responsive small-molecule probe designed for reliable hypoxia detection using photoacoustic imaging. Photoacoustic imaging utilizes near-infrared (NIR) light to induce the production of ultrasound signals, enabling high-resolution image acquisition at centimeter depths. Together with the ratiometric capability of rHyP-1, reliable hypoxia detection with unprecedented spatial resolution is possible while minimizing error associated with concentration dependence and tissue heterogeneity.
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Affiliation(s)
- Hailey J. Knox
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801, United States
| | - Tae Wook Kim
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801, United States
| | - Zhouyang Zhu
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801, United States
| | - Jefferson Chan
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801, United States
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Koo KS, Kim TW, Yang KS, Oh HS. First observation on the breeding behavior of endangered species, Chinese many-tooth snake, Sibynophis chinensis. Journal of Asia-Pacific Biodiversity 2018. [DOI: 10.1016/j.japb.2018.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Knox HJ, Hedhli J, Kim TW, Khalili K, Dobrucki LW, Chan J. A bioreducible N-oxide-based probe for photoacoustic imaging of hypoxia. Nat Commun 2017; 8:1794. [PMID: 29176550 PMCID: PMC5702603 DOI: 10.1038/s41467-017-01951-0] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 10/25/2017] [Indexed: 12/22/2022] Open
Abstract
Hypoxia occurs when limited oxygen supply impairs physiological functions and is a pathological hallmark of many diseases including cancer and ischemia. Thus, detection of hypoxia can guide treatment planning and serve as a predictor of patient prognosis. Unfortunately, current methods suffer from invasiveness, poor resolution and low specificity. To address these limitations, we present Hypoxia Probe 1 (HyP-1), a hypoxia-responsive agent for photoacoustic imaging. This emerging modality converts safe, non-ionizing light to ultrasound waves, enabling acquisition of high-resolution 3D images in deep tissue. HyP-1 features an N-oxide trigger that is reduced in the absence of oxygen by heme proteins such as CYP450 enzymes. Reduction of HyP-1 produces a spectrally distinct product, facilitating identification via photoacoustic imaging. HyP-1 exhibits selectivity for hypoxic activation in vitro, in living cells, and in multiple disease models in vivo. HyP-1 is also compatible with NIR fluorescence imaging, establishing its versatility as a multimodal imaging agent. Hypoxia is a hallmark of many diseases including cancer and ischemia, and detection can be invasive and of low resolution and specificity. Here the authors show a hypoxia probe that converts non-ionizing light to ultrasound, which enables the acquisition of high-resolution 3D images in deep tissue.
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Affiliation(s)
- Hailey J Knox
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, 61801, USA
| | - Jamila Hedhli
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, 61801, USA.,Department of Bioengineering, University of Illinois at Urbana-Champaign, 1304 W. Springfield Ave, Urbana, IL, 61801, USA
| | - Tae Wook Kim
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Kian Khalili
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Lawrence W Dobrucki
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, 61801, USA.,Department of Bioengineering, University of Illinois at Urbana-Champaign, 1304 W. Springfield Ave, Urbana, IL, 61801, USA
| | - Jefferson Chan
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA. .,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, 61801, USA.
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De Vito V, Owen H, Marzoni M, Kim TW, Poapolathep A, Giorgi M. Pharmacokinetics of tapentadol in laying hens and its residues in eggs after multiple oral dose administration. Br Poult Sci 2017; 59:128-133. [PMID: 29115161 DOI: 10.1080/00071668.2017.1401705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1. The aim of the study was to evaluate the pharmacokinetics (PKs) of tapentadol (TAP), a novel opioid analgesic, in laying hens after intravenous (IV) and oral (PO) administration and to quantify the concentrations of TAP residues in eggs. 2. Twenty healthy laying hens were divided into three groups: A (n = 6), B (n = 6) and C (n = 8). The study was conducted in two phases. Groups A and B received TAP by IV and PO routes at the dose of 1 and 5 mg/kg, respectively. 3. No visible adverse effects were observed after administration of the drug. TAP plasma concentrations were detectable up to 4 h following administration. Following IV administration, TAP plasma concentrations were only higher than the minimal effective concentration (148 ng/ml) reported for humans for 1 h. After single PO administration, plasma concentrations of TAP would not conform to software algorithms and the PK parameters were not calculated. TAP concentration following multiple PO doses at 5 mg/kg for 5 d was found to be higher and more persistent (12 h vs. 7 h) in yolk compared with albumen. 4. This is the first PK study on the novel atypical opioid TAP in laying hens. Further studies are required to investigate the analgesic efficacy and actual effective plasma concentration of TAP in this species.
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Affiliation(s)
- V De Vito
- a Department of Veterinary Sciences , University of Sassari , Sassari , Italy
| | - H Owen
- b School of Veterinary Science , The University of Queensland , Gatton , Australia
| | - M Marzoni
- c Department of Veterinary Sciences , University of Pisa , Pisa , Italy
| | - T W Kim
- d Colleage of Veterinary Medicine , Chungnam National University , Daejeon , South Korea
| | - A Poapolathep
- e Department of Pharmacology, Faculty of Veterinary Medicine , Kasetsart University , Bangkok , Thailand
| | - M Giorgi
- c Department of Veterinary Sciences , University of Pisa , Pisa , Italy
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Le HT, Lee JW, Park SC, Jeong JW, Jung W, Lim CW, Kim KP, Kim TW. Triazolium cyclodextrin click cluster-resin conjugate: an enrichment material for phosphatidylinositol (3,4,5)-triphosphate. Chem Commun (Camb) 2017; 53:10459-10462. [PMID: 28890969 DOI: 10.1039/c7cc06151j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UltraLink was functionalized with a triazolium cyclodextrin click cluster (CCC) which provides a well-oriented, multivalent, positively charged binding site for PtdIns(3,4,5)P3. MALDI TOF MS and LC ESI MS/MS MRM analysis of spiked PtdIns(3,4,5)P3 in lipid extract suggest that triazolium CCC-UltraLink conjugate can be used as an enrichment material for PtdIns(3,4,5)P3.
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Affiliation(s)
- H T Le
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - J W Lee
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - S C Park
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - J W Jeong
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - W Jung
- Department of Emergency Medicine, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - C W Lim
- Department of Chemistry, College of Life Science and Nano-technology, Hannam University, Daejeon, 34430, Republic of Korea
| | - K P Kim
- Department of Applied Chemistry, College of Applied Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - T W Kim
- Graduate School of East-West Medical Science, Kyung Hee University, Yongin, 17104, Republic of Korea.
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Yu BG, Oh JH, Kim Y, Kim TW. Accurate measurement of chest compression depth using impulse-radio ultra-wideband sensor on a mattress. PLoS One 2017; 12:e0183971. [PMID: 28854262 PMCID: PMC5576690 DOI: 10.1371/journal.pone.0183971] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/15/2017] [Indexed: 11/18/2022] Open
Abstract
Objective We developed a new chest compression depth (CCD) measuring technology using radar and impulse-radio ultra-wideband (IR-UWB) sensor. This study was performed to determine its accuracy on a soft surface. Methods Four trials, trial 1: chest compressions on the floor using an accelerometer device; trial 2: chest compressions on the floor using an IR-UWB sensor; trial 3: chest compressions on a foam mattress using an accelerometer device; trial 4: chest compressions on a foam mattress using an IR-UWB sensor, were performed in a random order. In all the trials, a cardiopulmonary resuscitation provider delivered 50 uninterrupted chest compressions to a manikin. Results The CCD measured by the manikin and the device were as follows: 57.42 ± 2.23 and 53.92 ± 2.92 mm, respectively in trial 1 (p < 0.001); 56.29 ± 1.96 and 54.16 ± 3.90 mm, respectively in trial 2 (p < 0.001); 55.61 ± 1.57 and 103.48 ± 10.48 mm, respectively in trial 3 (p < 0.001); 57.14 ± 3.99 and 55.51 ± 3.39 mm, respectively in trial 4 (p = 0.012). The gaps between the CCD measured by the manikin and the devices (accelerometer device vs. IR-UWB sensor) on the floor were not different (3.50 ± 2.08 mm vs. 3.15 ± 2.27 mm, respectively, p = 0.136). However, the gaps were significantly different on the foam mattress (48.53 ± 5.65 mm vs. 4.10 ± 2.47 mm, p < 0.001). Conclusion The IR-UWB sensor could measure the CCD accurately both on the floor and on the foam mattress.
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Affiliation(s)
- Byung Gyu Yu
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea
| | - Je Hyeok Oh
- Department of Emergency Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Yeomyung Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea
| | - Tae Wook Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea
- * E-mail:
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Yu GE, Kwon S, Hwang JH, An SM, Park DH, Kang DG, Kim TW, Kim IS, Park HC, Ha J, Kim CW. Effects of cell death-inducing DFF45-like effector B on meat quality traits in Berkshire pigs. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029408. [PMID: 28549200 DOI: 10.4238/gmr16029408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cell death-inducing DFF45-like effector (CIDE) B is a member of the CIDE family of apoptosis-inducing factors. In the present study, we detected a single nucleotide polymorphism (SNP), c.414G>A, which corresponds to the synonymous SNP 414Arg, in CIDE-B in the Berkshire pigs. We also analyzed the relationships between the CIDE-B SNP and various meat quality traits. The SNP was significantly associated with post-mortem pH24h, water-holding capacity (WHC), fat content, protein content, drip loss, post-mortem temperature at 12 h (T12) and 24 h (T24) in a co-dominant model (P < 0.05). A significant association was detected between the SNP and post-mortem pH24h, fat content, protein content, drip loss, shear force, and T24 in gilts; and color parameter b*, WHC, and T24 in barrows (P < 0.05). The SNP was significantly correlated with the fat content, and CIDE-B mRNA expression was significantly upregulated during the early stage of adipogenesis, suggesting that CIDE-B may contribute towards initiation of adipogenesis (P < 0.05). Furthermore, CIDE-B mRNA was strongly expressed in the liver, kidney, large intestine, and small intestine, and weakly expressed in the stomach, lung, spleen, and white adipose tissue. These results indicate that the CIDE-B SNP is closely associated with meat quality traits and may be a useful DNA marker for improving pork quality.
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Affiliation(s)
- G E Yu
- Swine Science and Technology Center, , , South Korea
| | - S Kwon
- Swine Science and Technology Center, , , South Korea
| | - J H Hwang
- Swine Science and Technology Center, , , South Korea
| | - S M An
- Swine Science and Technology Center, , , South Korea
| | - D H Park
- Swine Science and Technology Center, , , South Korea
| | - D G Kang
- Swine Science and Technology Center, , , South Korea
| | - T W Kim
- Swine Science and Technology Center, , , South Korea
| | - I-S Kim
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Gyeongnam, South Korea
| | - H C Park
- Dasan Pig Breeding Co., Namwon-si, South Korea
| | - J Ha
- Swine Science and Technology Center, , , South Korea
| | - C W Kim
- Swine Science and Technology Center, , , South Korea
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Kim HY, Kim TW. Crohn's disease with ankylosing spondylitis in an adolescent patient who had undergone long ileo-colonic anastomosis for Hirschsprung's disease as an infant. Intest Res 2017; 15:133-137. [PMID: 28239325 PMCID: PMC5323304 DOI: 10.5217/ir.2017.15.1.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 01/11/2016] [Accepted: 01/22/2016] [Indexed: 11/05/2022] Open
Abstract
Crohn's disease (CD) is a chronic, idiopathic, inflammatory disorder of the gastrointestinal tract. In rare cases, CD has been associated with Hirschsprung's disease (HD); however, the underlying pathophysiology of this and other comorbidities is not yet fully understood. In this report, we describe the case of a 17-year-old patient who was diagnosed with both CD and ankylosing spondylitis (AS), having undergone a long ileo-colonic anastomosis to treat HD at 12 months of age. To our knowledge, this is the first documented case of CD combined with AS in a patient with HD.
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Affiliation(s)
- Ha Yeon Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Tae Wook Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
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Jo JL, Hwang JH, Kwon SG, Park DH, Kim TW, Kang DG, Yu GE, Kim IS, Ha JG, Kim CW. Association between a non-synonymous HSD17B4 single nucleotide polymorphism and meat-quality traits in Berkshire pigs. Genet Mol Res 2016; 15:gmr-15-gmr15048970. [PMID: 27819726 DOI: 10.4238/gmr15048970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are useful genetic markers that allow correlation of genetic sequences with phenotypic traits. It is shown here that HSD17B4, a bifunctional enzyme mediating dehydrogenation and anhydration during β-oxidation of long-chain fatty acids, contains a non-synonymous SNP (nsSNP) of chr2:128,825,976A>G, c.2137A>G, I690V, within the sterol carrier protein-2 domain of the HSD17B4 gene, by RNA-Seq of liver RNA. The HSD17B4 mRNA was highly expressed in the kidney and liver among various other tissues in four pig breeds, namely, Berkshire, Duroc, Landrace, and Yorkshire. The nsSNP was significantly associated with carcass weight, backfat thickness, and drip loss (P < 0.05). Furthermore, HSD17B4 may play a crucial role during the early stages of myogenesis when expression of its mRNA was significantly high. In conclusion, HSD17B4 may serve as a possible regulator of muscle development, and its identification should help to select for improved economic traits of Berkshire pigs such as carcass weight, backfat thickness, and drip loss.
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Affiliation(s)
- J L Jo
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J H Hwang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - S G Kwon
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D H Park
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - T W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D G Kang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - G E Yu
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - I S Kim
- Department of Animal Resource Technology, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J G Ha
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - C W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
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Obermannová R, Van Cutsem E, Yoshino T, Bodoky G, Prausová J, Garcia-Carbonero R, Ciuleanu T, Garcia Alfonso P, Portnoy D, Cohn A, Yamazaki K, Clingan P, Lonardi S, Kim TW, Yang L, Nasroulah F, Tabernero J. Subgroup analysis in RAISE: a randomized, double-blind phase III study of irinotecan, folinic acid, and 5-fluorouracil (FOLFIRI) plus ramucirumab or placebo in patients with metastatic colorectal carcinoma progression. Ann Oncol 2016; 27:2082-2090. [PMID: 27573561 PMCID: PMC5091322 DOI: 10.1093/annonc/mdw402] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/27/2016] [Accepted: 08/10/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The RAISE phase III clinical trial demonstrated that ramucirumab + FOLFIRI improved overall survival (OS) [hazard ratio (HR) = 0.844, P = 0.0219] and progression-free survival (PFS) (HR = 0.793, P < 0.0005) compared with placebo + FOLFIRI for second-line metastatic colorectal carcinoma (mCRC) patients previously treated with first-line bevacizumab, oxaliplatin, and a fluoropyrimidine. Since some patient or disease characteristics could be associated with differential efficacy or safety, prespecified subgroup analyses were undertaken. This report focuses on three of the most relevant ones: KRAS status (wild-type versus mutant), age (<65 versus ≥65 years), and time to progression (TTP) on first-line therapy (<6 versus ≥6 months). PATIENTS AND METHODS OS and PFS were evaluated by the Kaplan-Meier analysis, with HR determined by the Cox proportional hazards model. Treatment-by-subgroup interaction was tested to determine whether treatment effect was consistent between subgroup pairs. RESULTS Patients with both wild-type and mutant KRAS benefited from ramucirumab + FOLFIRI treatment over placebo + FOLFIRI (interaction P = 0.526); although numerically, wild-type KRAS patients benefited more (wild-type KRAS: median OS = 14.4 versus 11.9 months, HR = 0.82, P = 0.049; mutant KRAS: median OS = 12.7 versus 11.3 months, HR = 0.89, P = 0.263). Patients with both longer and shorter first-line TTP benefited from ramucirumab (interaction P = 0.9434), although TTP <6 months was associated with poorer OS (TTP ≥6 months: median OS = 14.3 versus 12.5 months, HR = 0.86, P = 0.061; TTP <6 months: median OS = 10.4 versus 8.0 months, HR = 0.86, P = 0.276). The subgroups of patients ≥65 versus <65 years also derived a similar ramucirumab survival benefit (interaction P = 0.9521) (≥65 years: median OS = 13.8 versus 11.7 months, HR = 0.85, P = 0.156; <65 years: median OS = 13.1 versus 11.9 months, HR = 0.86, P = 0.098). The safety profile of ramucirumab + FOLFIRI was similar across subgroups. CONCLUSIONS These analyses revealed similar efficacy and safety among patient subgroups with differing KRAS mutation status, longer or shorter first-line TTP, and age. Ramucirumab is a beneficial addition to second-line FOLFIRI treatment for a wide range of patients with mCRC. TRIAL REGISTRATION ClinicalTrials.gov, NCT01183780.
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Affiliation(s)
- R Obermannová
- Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - E Van Cutsem
- University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - G Bodoky
- Department of Oncology, St László Hospital, Budapest, Hungary
| | - J Prausová
- Onocology Clinic, Charles University, Prague, Czech Republic
| | - R Garcia-Carbonero
- Department of Oncology, Hospital Universitario Doce de Octubre, Madrid, Spain
| | - T Ciuleanu
- Institutul Oncologic Ion Chiricuta and UMF, Cluj-Napoca, Romania
| | - P Garcia Alfonso
- Department of Oncology, Hospital General Universitario Gregorio Maraňón, Madrid, Spain
| | - D Portnoy
- The West Clinic-University of Tennessee Health Sciences Center, Memphis
| | - A Cohn
- Rocky Mountain Cancer Center, Denver, USA
| | - K Yamazaki
- Department of Gastrointestinal Oncology, Shizouka Cancer Center, Shizouka, Japan
| | - P Clingan
- Southern Medical Day Care Centre, Wollongong, NSW, Australia
| | - S Lonardi
- Department of Medical Oncology, Istituto Oncologico Veneto-IRCCS, Padova, Italy
| | - T W Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - L Yang
- Eli Lilly and Company, Bridgewater, USA
| | - F Nasroulah
- Eli Lilly and Company, Buenos Aires, Argentine Republic
| | - J Tabernero
- Vall d'Hebron University Hospital and Institute of Oncology (VHIO), Universitat Autònoma de Barcelona, Barcelona, Spain
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Kim TW, Kim GH, Park DY, Ahn S, Lim W, Lee BE, Song GA. Endoscopic resection for duodenal subepithelial tumors: a single-center experience. Surg Endosc 2016; 31:1936-1946. [PMID: 27553800 DOI: 10.1007/s00464-016-5200-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 08/17/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Subepithelial tumors (SETs) in the gastrointestinal tract are often incidentally found during endoscopic examinations. Although the utility and safety of endoscopic resection (ER) of SETs in the esophagus and stomach have been described, data about the ER of duodenal SETs remain scant. Therefore, we aimed to investigate the clinical outcomes associated with the ER of duodenal SETs and to assess possible predictive factors for incomplete resection. METHODS We conducted a retrospective observational study of 62 patients (64 lesions) that underwent ER of duodenal SETs between June 2005 and December 2015 at the Pusan National University Hospital. The therapeutic outcomes from ER and procedure-related complications were analyzed. RESULTS Endoscopic mucosal resection (EMR) was performed in 38 tumors, EMR with a ligation device (EMR-L) in 18 and endoscopic submucosal dissection (ESD) in 8. The overall en bloc resection and complete ER rates were 96.9 % (62/64) and 100 % (64/64), respectively. The complete pathologic resection rate was 76.6 % (49/64). Multivariate logistic regression analyses determined that the macroscopic type (Yamada type I or II; odds ratio [OR] 6.460, 95 % confidence interval [CI] 1.569-37.458, p = 0.027) and the treatment method (ESD; OR 7.178, 95 % CI 1.291-39.323, p = 0.024) were independently associated with incomplete pathologic resection. The procedure-related bleeding and perforation rates were 6.3 % and 4.7 %, respectively. No recurrences were observed in patients who had undergone complete ER at a median follow-up period of 20 months (range 6-112 months). CONCLUSION ER is an effective, safe, and feasible treatment for duodenal SETs, especially when the SET is located in the deep mucosal layer and/or the submucosal layer.
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Affiliation(s)
- Tae Wook Kim
- Department of Internal Medicine, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea. .,Biomedical Research Institute, Pusan National University Hospital, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea.
| | - Do Youn Park
- Department of Pathology, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
| | - Sangjeong Ahn
- Department of Pathology, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
| | - Won Lim
- Department of Internal Medicine, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
| | - Bon Eun Lee
- Department of Internal Medicine, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
| | - Geun Am Song
- Department of Internal Medicine, Pusan National University School of Medicine, 179, Gudeok-ro, Seo-Gu, Busan, 49241, Korea
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Kim JE, Shin JS, Moon JH, Hong SW, Jung DJ, Kim JH, Hwang IY, Shin YJ, Gong EY, Lee DH, Kim SM, Lee EY, Kim YS, Kim D, Hur D, Kim TW, Kim KP, Jin DH, Lee WJ. Foxp3 is a key downstream regulator of p53-mediated cellular senescence. Oncogene 2016; 36:219-230. [DOI: 10.1038/onc.2016.193] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 04/18/2016] [Accepted: 04/26/2016] [Indexed: 11/09/2022]
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Choi YH, Yoshimura Y, Kim KJ, Lee K, Kim TW, Ono T, You CY, Jung MH. Field-driven domain wall motion under a bias current in the creep and flow regimes in Pt/[CoSiB/Pt]N nanowires. Sci Rep 2016; 6:23933. [PMID: 27030379 PMCID: PMC4814914 DOI: 10.1038/srep23933] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 03/16/2016] [Indexed: 11/09/2022] Open
Abstract
The dynamics of magnetic domain wall (DW) in perpendicular magnetic anisotropy Pt/[CoSiB/Pt]N nanowires was studied by measuring the DW velocity under a magnetic field (H) and an electric current (J) in two extreme regimes of DW creep and flow. Two important findings are addressed. One is that the field-driven DW velocity increases with increasing N in the flow regime, whereas the trend is inverted in the creep regime. The other is that the sign of spin current-induced effective field is gradually reversed with increasing N in both DW creep and flow regimes. To reveal the underlying mechanism of new findings, we performed further experiment and micromagnetic simulation, from which we found that the observed phenomena can be explained by the combined effect of the DW anisotropy, Dzyaloshinskii-Moriya interaction, spin-Hall effect, and spin-transfer torques. Our results shed light on the mechanism of DW dynamics in novel amorphous PMA nanowires, so that this work may open a path to utilize the amorphous PMA in emerging DW-based spintronic devices.
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Affiliation(s)
- Y H Choi
- Department of Physics, Sogang University, Seoul 121-742 Korea
| | - Y Yoshimura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K-J Kim
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Lee
- Institute of Physics, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - T W Kim
- Department of Advanced Materials Engineering, Sejong University, Seoul 143-747 Korea
| | - T Ono
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C-Y You
- Department of Physics, Inha University, Incheon 402-751, Korea
| | - M H Jung
- Department of Physics, Sogang University, Seoul 121-742 Korea
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Jung HS, Ryu JT, Yoo KH, Kim TW. Reliability Degeneration Mechanisms of the 20-nm Flash Memories Due to the Word Line Stress. J Nanosci Nanotechnol 2016; 16:1669-1671. [PMID: 27433643 DOI: 10.1166/jnn.2016.11950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The electrical characteristics of NAND flash memories with a high-k dielectric layer were simulated by using a full three-dimensional technology computer-aided design simulator. The occurrence rate of the errors in the flash memories increases with increasing program/erase cycles. To verify the word line stress effect, electron density in the floating gate of target cell and non-target cell, the drain current in the channel of non-target cell and depletion region of the non-target cell were simulated as a function of program/erase cycle, for various floating gate thicknesses. The electron density in the floating gate became decreased with increasing program/erase cycles. The reliability degradation occured by the increased depletion region at the bottom of the polysilicon floating gate in the continued program/erase cycle situation due to the word line stress. The degradation mechanisms for the program characteristics of 20-nm NAND flash memories were clarified by examining electron density, darin current and depletion region.
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Kang CM, Lim SB, Hong SM, Yu CS, Hong YS, Kim TW, Park JH, Kim JH, Kim JC. Prevalence and clinical significance of cellular and acellular mucin in patients with locally advanced mucinous rectal cancer who underwent preoperative chemoradiotherapy followed by radical surgery. Colorectal Dis 2016; 18:O10-6. [PMID: 26530997 DOI: 10.1111/codi.13169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 08/15/2015] [Indexed: 02/08/2023]
Abstract
AIM The frequent presence of acellular mucin in specimens showing pathological complete response to preoperative chemoradiotherapy (CRT) and the poor response to preoperative CRT in mucinous rectal cancer have been reported. However, the prevalence and prognostic significance of cellular and acellular mucin have not been evaluated in resected specimens from patients with mucinous rectal cancer who undergo preoperative CRT. METHOD We retrospectively evaluated the clinicopathological features and prognostic significance of mucin in resected specimens from 59 consecutive patients with mucinous rectal cancer who underwent long-course CRT followed by resection between January 2000 and December 2009. Patients were categorized according to the presence of mucin, as identified by pathological analysis. The clinicopathological findings and oncological results were compared. RESULTS Mucin was identified in 25 of 59 patients with mucinous rectal cancer (42.4%). Mucin was more frequent in men (hazard ratio = 23.94, 95% confidence interval = 1.875-305.504, P = 0.015) and in specimens showing a good tumour response grade (hazard ratio = 64.26, 95% confidence interval = 6.940-595.045, P < 0.001). With a median follow-up of 67.7 (range 8.6-133.2) months, the 5-year overall survival (60.7% without mucin vs 51.4% with mucin, P = 0.898) and disease-free survival (59.9% without mucin vs 56.9% with mucin, P = 0.813) did not differ between the groups. CONCLUSION The presence of mucin in rectal cancer with mucinous differentiation after preoperative CRT and resection is associated with male gender and a good tumour response grade, without significant impact on oncological outcome.
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Affiliation(s)
- C M Kang
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - S-B Lim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - S-M Hong
- Department of Pathology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - C S Yu
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - Y S Hong
- Department of Oncology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - T W Kim
- Department of Oncology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - J-H Park
- Department of Radiation Oncology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - J H Kim
- Department of Radiation Oncology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - J C Kim
- Department of Colon and Rectal Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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Lim SH, Kim TW, Hong YS, Han SW, Lee KH, Kang HJ, Hwang IG, Lee JY, Kim HS, Kim ST, Lee J, Park JO, Park SH, Park YS, Lim HY, Jung SH, Kang WK. A randomised, double-blind, placebo-controlled multi-centre phase III trial of XELIRI/FOLFIRI plus simvastatin for patients with metastatic colorectal cancer. Br J Cancer 2015; 113:1421-6. [PMID: 26505681 PMCID: PMC4815882 DOI: 10.1038/bjc.2015.371] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [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: 06/23/2015] [Revised: 09/22/2015] [Accepted: 10/05/2015] [Indexed: 12/19/2022] Open
Abstract
Background: The purpose of this randomised phase III trial was to evaluate whether the addition of simvastatin, a synthetic 3-hydroxy-3methyglutaryl coenzyme A reductase inhibitor, to XELIRI/FOLFIRI chemotherapy regimens confers a clinical benefit to patients with previously treated metastatic colorectal cancer. Methods: We undertook a double-blind, placebo-controlled phase III trial of 269 patients previously treated for metastatic colorectal cancer and enrolled in 5 centres in South Korea. Patients were randomly assigned (1 : 1) to one of the following groups: FOLFIRI/XELIRI plus simvastatin (40 mg) or FOLFIRI/XELIRI plus placebo. The FOLFIRI regimen consisted of irinotecan at 180 mg m−2 as a 90-min infusion, leucovorin at 200 mg m−2 as a 2-h infusion, and a bolus injection of 5-FU 400 mg m−2 followed by a 46-h continuous infusion of 5-FU at 2400 mg m−2. The XELIRI regimen consisted of irinotecan at 250 mg m−2 as a 90-min infusion with capecitabine 1000 mg m−2 twice daily for 14 days. The primary end point was progression-free survival (PFS). Secondary end points included response rate, duration of response, overall survival (OS), time to progression, and toxicity. Results: Between April 2010 and July 2013, 269 patients were enrolled and assigned to treatment groups (134 simvastatin, 135 placebo). The median PFS was 5.9 months (95% CI, 4.5–7.3) in the XELIRI/FOLFIRI plus simvastatin group and 7.0 months (95% CI, 5.4–8.6) in the XELIRI/FOLFIRI plus placebo group (P=0.937). No significant difference was observed between the two groups with respect to OS (median, 15.9 months (simvastatin) vs 19.9 months (placebo), P=0.826). Grade ⩾3 nausea and anorexia were noted slightly more often in patients in the simvastatin arm compared with with the placebo arm (4.5% vs 0.7%, 3.0% vs 0%, respectively). Conclusions: The addition of 40 mg simvastatin to the XELIRI/FOLFIRI regimens did not improve PFS in patients with previously treated metastatic colorectal cancer nor did it increase toxicity.
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Affiliation(s)
- S H Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - T W Kim
- Division of Hematology-Oncology, Department of Medicine, Asan Medical Center, Seoul, South Korea
| | - Y S Hong
- Division of Hematology-Oncology, Department of Medicine, Asan Medical Center, Seoul, South Korea
| | - S-W Han
- Division of Hematology-Oncology, Department of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - K-H Lee
- Division of Hematology-Oncology, Department of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - H J Kang
- Division of Hematology-Oncology, Department of Medicine, Korea Cancer Center Hospital, Seoul, South Korea
| | - I G Hwang
- Division of Hematology-Oncology, Department of Medicine, Chungang University Hospital, Seoul, South Korea
| | - J Y Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - H S Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S-H Jung
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA.,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Jeon YP, Choi YH, Kim TW. Efficiency Enhancement of Organic Light-Emitting Devices Fabricated Using a 1,4,5,8,9,11-Hexaazatriphenylene Hexacarbonitrile Silver Electrode. J Nanosci Nanotechnol 2015; 15:7791-7794. [PMID: 26726414 DOI: 10.1166/jnn.2015.11190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile (HAT-CN)/Ag/HAT-CN transparent electrode for organic light-emitting devices (OLEDs) was investigated. The current density of OLEDs was enhanced with an increase in the Ag layer thickness of a HAT-CN/Ag/HAT-CN anode. While the luminance of the OLEDs with a HAT-CN/Ag/HAT-CN anode slightly decreased with increasing thickness of the upper HAT-CN layer, the current efficiency of the OLEDs with thicknesses for the Ag layer of 20 nm and for the upper HAT-CN layer of 100 nm was almost two times higher than that of OLEDs with an ITO anode. Electroluminescence spectra of the OLEDs with a HAT-CN/Ag/HAT-CN anode were shifted due to the micro-cavity effect in the stacked anode, which was confirmed by the transmittance spectra.
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Kim KH, Jeon YP, Choo DC, Kim TW. Luminance Mechanisms of White Organic Light-Emitting Devices Fabricated Utilizing a Charge Generation Layer with a Light-Emitting Function. J Nanosci Nanotechnol 2015; 15:5220-5223. [PMID: 26373110 DOI: 10.1166/jnn.2015.10367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The luminance mechanisms of the white organic light-emitting devices (WOLEDs) with a charge generation layer (CGL) consisting of a tungsten oxide layer and a 5,6,11,12-tetraphenyltetracene (rubrene) doped N,N',-bis-(1-naphthyl)-N,N'-diphenyl1-1'-biphenyl-4,4'-diamine (NPB) layer were investigated. Current densities and luminances of the WOLEDs increased with increasing a rubrene doping concentration because the formation of excitons in the rubrene-doped NPB layer increased due to the more exciton trapping in rubrene molecules and the delay of the electron injection due to the insertion of the litium qunolate layer. The yellow light emitted from the rubrene-doped NPB layer in the CGL combined with the blue light from the main emitting layer of the WOLEDs, resulting in the emission of the white light. The ratio between the yellow and the blue color peak intensities of the electroluminescence spectra for the WOLEDs was controlled by the rubrene doping concentration. The Commission Internationale de l'Eclairage coordinates of the fabricated WOLED were (0.31, 0.42) at 740.7 cd/m2, indicative of white emission color.
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Lee MC, Ha CW, Elmallah RK, Cherian JJ, Cho JJ, Kim TW, Bin SI, Mont MA. A placebo-controlled randomised trial to assess the effect of TGF-ß1-expressing chondrocytes in patients with arthritis of the knee. Bone Joint J 2015; 97-B:924-32. [DOI: 10.1302/0301-620x.97b7.35852] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 01/26/2023]
Abstract
The aim of this study was to assess the effect of injecting genetically engineered chondrocytes expressing transforming growth factor beta 1 (TGF-β1) into the knees of patients with osteoarthritis. We assessed the resultant function, pain and quality of life. A total of 54 patients (20 men, 34 women) who had a mean age of 58 years (50 to 66) were blinded and randomised (1:1) to receive a single injection of the active treatment or a placebo. We assessed post-treatment function, pain severity, physical function, quality of life and the incidence of treatment-associated adverse events. Patients were followed at four, 12 and 24 weeks after injection. At final follow-up the treatment group had a significantly greater improvement in the mean International Knee Documentation Committee score than the placebo group (16 points; -18 to 49, vs 8 points; -4 to 37, respectively; p = 0.03). The treatment group also had a significantly improved mean visual analogue score at final follow-up (-25; -85 to 34, vs -11 points; -51 to 25, respectively; p = 0.032). Both cohorts showed an improvement in Western Ontario and McMaster Osteoarthritis Index and Knee Injury and Osteoarthritis Outcome Scores, but these differences were not statistically significant. One patient had an anaphylactic reaction to the preservation medium, but recovered within 24 hours. All other adverse events were localised and resolved without further action. This technique may result in improved clinical outcomes, with the aim of slowing the degenerative process, leading to improvements in pain and function. However, imaging and direct observational studies are needed to verify cartilage regeneration. Nevertheless, this study provided a sufficient basis to proceed to further clinical testing. Cite this article: Bone Joint J 2015;97-B:924–32.
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Affiliation(s)
- M C Lee
- Seoul National University Hospital, Seoul
National University College of Medicine, Seoul, Korea
| | - C-W Ha
- Department of Orthopaedic Surgery, Samsung
Medical Center, Stem Cell and Regenerative Medicine
Research Center, Department of Health Sciences
and Technology, SAI HST, Sungkyunkwan University
School of Medicine, Seoul, Korea
| | - R. K. Elmallah
- Sinai Hospital of Baltimore, Baltimore, Maryland
21215, USA
| | - J. J. Cherian
- Sinai Hospital of Baltimore, Baltimore, Maryland
21215, USA
| | - J J Cho
- Kolon Life Science Inc., Seoul, Korea
| | - T W Kim
- Kolon Life Science Inc., Seoul, Korea
| | | | - M. A. Mont
- Sinai Hospital of Baltimore, Baltimore, Maryland
21215, USA
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Ahn YH, Hong SO, Kim JH, Noh KH, Song KH, Lee YH, Jeon JH, Kim DW, Seo JH, Kim TW. The siRNA cocktail targeting interleukin 10 receptor and transforming growth factor-β receptor on dendritic cells potentiates tumour antigen-specific CD8(+) T cell immunity. Clin Exp Immunol 2015; 181:164-78. [PMID: 25753156 DOI: 10.1111/cei.12620] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 03/02/2015] [Indexed: 12/23/2022] Open
Abstract
Dendritic cells (DCs) are promising therapeutic agents in the field of cancer immunotherapy due to their intrinsic immune-priming capacity. The potency of DCs, however, is readily attenuated immediately after their administration in patients as tumours and various immune cells, including DCs, produce various immunosuppressive factors such as interleukin (IL)-10 and transforming growth factor (TGF)-β that hamper the function of DCs. In this study, we used small interfering RNA (siRNA) to silence the expression of endogenous molecules in DCs, which can sense immunosuppressive factors. Among the siRNAs targeting various immunosuppressive molecules, we observed that DCs transfected with siRNA targeting IL-10 receptor alpha (siIL-10RA) initiated the strongest antigen-specific CD8(+) T cell immune responses. The potency of siIL-10RA was enhanced further by combining it with siRNA targeting TGF-β receptor (siTGF-βR), which was the next best option during the screening of this study, or the previously selected immunoadjuvant siRNA targeting phosphatase and tensin homologue deleted on chromosome 10 (PTEN) or Bcl-2-like protein 11 (BIM). In the midst of sorting out the siRNA cocktails, the cocktail of siIL-10RA and siTGF-βR generated the strongest antigen-specific CD8(+) T cell immunity. Concordantly, the knock-down of both IL-10RA and TGF-βR in DCs induced the strongest anti-tumour effects in the TC-1 P0 tumour model, a cervical cancer model expressing the human papillomavirus (HPV)-16 E7 antigen, and even in the immune-resistant TC-1 (P3) tumour model that secretes more IL-10 and TGF-β than the parental tumour cells (TC-1 P0). These results provide the groundwork for future clinical development of the siRNA cocktail-mediated strategy by co-targeting immunosuppressive molecules to enhance the potency of DC-based vaccines.
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Affiliation(s)
- Y-H Ahn
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
| | - S-O Hong
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
| | - J H Kim
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
| | - K H Noh
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea.,Department of Gynecologic Oncology and Reproductive Medicine, University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
| | - K-H Song
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
| | - Y-H Lee
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
| | | | - D-W Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Korea
| | - J H Seo
- Division of Oncology, Department of Internal Medicine, College of Medicine, Korea University, Seoul, Korea
| | - T W Kim
- Division of Infection and Immunology, Graduate School of Medicine, Korea University.,Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Korea
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Lee JB, Kim TW. Increased levels of FFA during passive heat loading after a 2-week repeated heat load in Koreans. Int J Biometeorol 2015; 59:473-475. [PMID: 24865598 DOI: 10.1007/s00484-014-0849-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 05/09/2014] [Accepted: 05/13/2014] [Indexed: 06/03/2023]
Abstract
The purpose of this study was to determine whether repeated heat load is closely related to circulating levels of free fatty acids (FFA) during repeated passive heat loading (PHL), defined as immersion of the lower body up to an umbilical level in hot water, 42 ± 0.5 °C (three times/week, 30 min/day) for 2 weeks. There were significant correlations between mean body temperature and FFA before and after repeated heat load (p < 0.001, respectively), and the level of FFA was significantly higher after repeated heat load during PHL (p < 0.01). The threshold of mean body temperature for lipolysis was lowered by repeated heat load and enhanced lipolysis during PHL. However, caution is needed for diabetic individuals.
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Affiliation(s)
- Jeong Beom Lee
- Department of Physiology, College of Medicine, Soonchunhyang University, 366-1 Ssangyong-dong, Cheonan, 331-946, Republic of Korea
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Kim TW, Della Rocca G, Di Salvo A, Ryschanova R, Sgorbini M, Giorgi M. Evaluation of pharmacokinetic and pharmacodynamic properties of cimicoxib in fasted and fed horses. N Z Vet J 2015; 63:92-7. [DOI: 10.1080/00480169.2014.950355] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Jang JS, Lee KS, Lee EJ, Kwon MS, Kim TW. Enhancement of the Color Rendering Index of White Organic Light-Emitting Devices Based on a Blue and Red Emitting Layer with a Y3Al5O12:Ce3+ Green Phosphor Color-Conversion Layer. J Nanosci Nanotechnol 2015; 15:562-565. [PMID: 26328402 DOI: 10.1166/jnn.2015.8304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
White organic light-emitting devices (WOLEDs) were fabricated utilizing blue and red emitting organic light-emitting devices and a color conversion layer (CCL) made of yttrium aluminum garnet (YAG:Ce3+) phosphors embedded into polymethylmethacrylate. The good color balance for the color conversion of the WOLEDs was achieved utilizing 20-nm blue and 10-nm red OLEDs. The electroluminescence spectrum for the fabricated device showed a white color consisting of the blue color from the 4,4-bis(2,2-diphenylethen-1-yl)bipheny layer, the red color from the tris-(8-hydroxyquinolinato) aluminum: 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran layer, and the green color from the YAG:Ce3+ phosphor. The Commission Internationale de l'Eclairage coordinates of the WOLEDs slightly shifted from (0.25, 0.23) of the blue and red emission OLEDs without phosphors to (0.34, 0.35) of the OLEDs with green phosphors, indicative of the pure white color. WOLEDs with a CCL exhibited three wavelength white emissions with a color rendering index of 86.
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