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Zhu S, Xu J, Shi RR, Wang XK, Sun MM, Li SN, Gao LL, Li YY, Wen HM, Zhao CL, Li S, Ji J, Yang CH, Yu YH. [Association between congenital hypothyroidism and in-hospital adverse outcomes in very low birth weight infants]. Zhonghua Er Ke Za Zhi 2024; 62:29-35. [PMID: 38154974 DOI: 10.3760/cma.j.cn112140-20231012-00281] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Objective: To investigate the association between congenital hypothyroidism (CH) and the adverse outcomes during hospitalization in very low birth weight infants (VLBWI). Methods: This prospective, multicenter observational cohort study was conducted based on the data from the Sino-northern Neonatal Network (SNN). Data of 5 818 VLBWI with birth weight <1 500 g and gestational age between 24-<37 weeks that were admitted to the 37 neonatal intensive care units from January 1st, 2019 to December 31st, 2022 were collected and analyzed. Thyroid function was first screened at 7 to 10 days after birth, followed by weekly tests within the first 4 weeks, and retested at 36 weeks of corrected gestational age or before discharge. The VLBWI were assigned to the CH group or non-CH group. Chi-square test, Fisher exact probability method, Wilcoxon rank sum test, univariate and multivariate Logistic regression were used to analyze the relationship between CH and poor prognosis during hospitalization in VLBWI. Results: A total of 5 818 eligible VLBWI were enrolled, with 2 982 (51.3%) males and the gestational age of 30 (29, 31) weeks. The incidence of CH was 5.5% (319 VLBWI). Among the CH group, only 121 VLBWI (37.9%) were diagnosed at the first screening. Univariate Logistic regression analysis showed that CH was associated with increased incidence of extrauterine growth retardation (EUGR) (OR=1.31(1.04-1.64), P<0.05) and retinopathy of prematurity (ROP) of stage Ⅲ and above (OR=1.74(1.11-2.75), P<0.05). However, multivariate Logistic regression analysis showed no significant correlation between CH and EUGR, moderate to severe bronchopulmonary dysplasia, grade Ⅲ to Ⅳ intraventricular hemorrhage, neonatal necrotizing enterocolitis in stage Ⅱ or above, and ROP in stage Ⅲ or above (OR=1.04 (0.81-1.33), 0.79 (0.54-1.15), 1.15 (0.58-2.26), 1.43 (0.81-2.53), 1.12 (0.70-1.80), all P>0.05). Conclusion: There is no significant correlation between CH and in-hospital adverse outcomes, possibly due to timely diagnosis and active replacement therapy.
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Affiliation(s)
- S Zhu
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - J Xu
- Department of Neonatology, Affiliated Hospital of Jining Medical University, Jining 272000, China
| | - R R Shi
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - X K Wang
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - M M Sun
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - S N Li
- Department of Neonatology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - L L Gao
- Department of Neonatology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Y Y Li
- Department of Neonatology, W.F. Maternal and Child Health Hospital, Weifang 261000, China
| | - H M Wen
- Department of Neonatology, Hebei PetroChina Central Hospital, Langfang 065000, China
| | - C L Zhao
- Department of Neonatology, the Third Hospital of Baogang Group, Baotou 014010, China
| | - S Li
- Department of Neonatology, the First Affiliated Hospital of Shandong First Medical University, Jinan 250014, China
| | - J Ji
- Department of Neonatology, Feixian People's Hospital, Linyi 273400, China
| | - C H Yang
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - Y H Yu
- Department of Neonatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
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Lim KY, Kim KO, Kim EY, Lee YJ, Jang BI, Kim SK, Yang CH. Efficacy and safety of 1 L polyethylene glycol plus ascorbic acid for bowel preparation in elderly: comparison with oral sulfate solution. Korean J Intern Med 2023; 38:651-660. [PMID: 37482653 PMCID: PMC10493436 DOI: 10.3904/kjim.2023.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/13/2023] [Accepted: 04/25/2023] [Indexed: 07/25/2023] Open
Abstract
BACKGROUND/AIMS Recently, 1 L of polyethylene glycol (PEG) plus ascorbic acid (Asc) has been introduced in Korea as a colonoscopy preparation agent. Data on its efficacy and safety in older adults have been limited. We aimed to evaluate the safety and efficacy of 1 L PEG/Asc in older adults by comparing it with oral sulfate solution (OSS). METHODS A prospective multicenter randomized study was conducted with subjects aged ≥ 65 years who underwent colonoscopy. The participants were randomized to receive 1 L PEG/Asc or OSS. The primary endpoint was successful bowel preparation, defined as total Boston Bowel Preparation Scale ≥ 6, and ≥ 2 at each segment. Patient satisfaction, adverse events, and renal function changes were compared between the groups. RESULTS Among the 106 patients, 104 were finally included in the analysis. Overall, successful bowel preparation was achieved in 96.2% of both 1 L PEG/Asc and OSS groups. The satisfaction scores for taste, total amount ingested, overall feeling, and willingness to repeat the same regimen were not significantly different between the groups. Adverse events of moderate or higher severity occurred in 16 and 10 cases in the 1 L PEG/Asc and OSS group, respectively. There were no significant changes in electrolyte levels or renal function from baseline. CONCLUSION The successful bowel preparation rate was > 90% in both groups without severe adverse effects and significant changes in renal function. As a new low-dose preparation regimen for colonoscopy in older adults, 1 L PEG/Asc, is as effective and safe as OSS.
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Affiliation(s)
- Ki Young Lim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu,
Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu,
Korea
| | - Eun Young Kim
- Department of Internal Medicine, Daegu Catholic University School of Medicine, Daegu,
Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu,
Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu,
Korea
| | - Sung Kook Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu,
Korea
| | - Chang Heon Yang
- Health Promotion Center, Yeungnam University College of Medicine, Daegu,
Korea
- Deparment of Internal Medicine, Dongguk University School of Medicine, Gyeongju,
Korea
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Kim KO, Kim EY, Lee YJ, Lee HS, Kim ES, Chung YJ, Jang BI, Kim SK, Yang CH. Efficacy, safety and tolerability of oral sulphate tablet for bowel preparation in patients with inflammatory bowel disease: A multicentre randomized controlled study. J Crohns Colitis 2022; 16:1706-1713. [PMID: 35689818 DOI: 10.1093/ecco-jcc/jjac080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS We evaluated the efficacy, safety and tolerability of novel oral sulphate tablets [OSTs] vs 2 L of polyethylene glycol and ascorbate [PEG/Asc] in patients with inflammatory bowel disease [IBD]. PATIENTS AND METHODS A total of 110 patients with clinically inactive IBD were enrolled in this single-blind multicentre non-inferiority study. Patients were randomly assigned to the OST or 2 L PEG/Asc group and we applied a split-dose regimen. The primary efficacy endpoint was bowel cleansing success rate defined as Harefield Cleansing Scale Grade A or B. The secondary endpoints were perfect preparation rate, the presence of air bubbles, safety as assessed by laboratory abnormalities and self-reported adverse events, or IBD symptom flare-ups. Tolerability was assessed by a pre-procedural visual analog scale [VAS] interview. RESULTS Both groups showed high cleansing success rates [98.1%] and there was no significant difference in perfect preparation rate. The proportion of a bubble score 0 was significantly higher in the OST group [94.5% vs 50.0%, p < 0.001]. There was no significant intergroup difference in vomiting or bloating. Symptom flare-ups occurred in two OST group patients. No clinically significant blood test abnormalities were noted in either group. Ease of ingestion and taste scores were significantly higher in the OST group. More patients in the OST group [94.5%] wanted to take the same preparation agent for their next colonoscopy. CONCLUSIONS Both OST and 2 L PEG/Asc demonstrated high successful cleansing and safety in patients with inactive IBD. OST achieved higher satisfaction than 2 L PEG/Asc. Our results suggest that the OST split-dose regimen is effective and safe for patients with inactive IBD.
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Affiliation(s)
- Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, South Korea
| | - Eun Young Kim
- Department of Internal Medicine, Daegu Catholic University School of Medicine, Daegu, South Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, South Korea
| | - Hyun Seok Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Eun Soo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Yun Jin Chung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea.,Department of Internal Medicine, Fatima Hospital of Daegu, Daegu, South Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, South Korea
| | - Sung Kook Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Chang Heon Yang
- Health Promotion Center, Yeungnam University College of Medicine, Daegu, South Korea.,Deparment of Internal Medicine, Dongguk University School of Medicine, Kyungju, South Korea
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Li T, Yang CH, Zou HD. [Two cases of Wolfram syndrome]. Zhonghua Yan Ke Za Zhi 2022; 58:799-802. [PMID: 36220653 DOI: 10.3760/cma.j.cn112142-20220608-00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Two adolescents with T1DM participated in the Shanghai Children and Adolescent DM Eye study (SCADE) 2017-2018. The previous T1DM history of the 2 children were 12 years and 4 years respectively. The history of optic atrophy were 8 years and 4 years respectively. The ophthalmic examination showed that there were slight posterior capsule cataract and atrophy of optic atrophy in both patients. Optical Coherance Tomographic examination showed that the choroidal thickness of the inferior inner ring of the optic nerve and RNFL layer thickness decreased markedly, perfusion density and vascular density of the optic disc area and macular decreased markedly, electrophysiological examination showed that amplitude decreased markedly, and visual field examination showed binocular extinction or tubular vision field. Now the 2 adolescents were in closely followed-up. We suggest that children with T1DM whose best corrected visual acuity decreased recently to 0.6 or lower, in addition to routine ophthalmic examination, choroidal thickness, retinal nerve fiber layer thickness, retinal blood flow, ERG and visual field examination are recommended to distinguish wolfram syndrome from T1DM. Genetic sequencing examination of WFS-1 is also recommended if possible.
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Affiliation(s)
- T Li
- Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai Vision Health Center & Shanghai Children Myopia Institute, Division of Ophthalmology Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Eye Diseases, Shanghai 200040, China
| | - C H Yang
- The Pediatric Hospital Affiliated to Fudan University, Shanghai 201102, China
| | - H D Zou
- Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai Vision Health Center & Shanghai Children Myopia Institute, Division of Ophthalmology Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Eye Diseases, Shanghai 200040, China
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Yang CH, Lin YS, Ou YC, Weng WC, Huang LH, Lu CH, Hsu CY, Tung MC. Short-term stretched penile length analysis for subsequent erectile dysfunction after robotic-assisted radical prostatectomy with bilateral neurovascular bundle preservation. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhang XF, Lin XJ, Yang CH, Cheng X, Huang SF. Effects of radial stress on piezoelectric ceramic tubes and transducers. J Acoust Soc Am 2022; 151:434. [PMID: 35105003 DOI: 10.1121/10.0009319] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Static analysis is performed for fiber windings to quantitatively control the radial stress at the outer radius of the piezoelectric ceramic tube. The radial stress is verified both experimentally and theoretically, and the dependence of the resonant and material properties of the piezoelectric ceramic tubes on the radial stress is clarified. The resonance frequencies and dielectric loss remain relatively stable, but the relative permittivity and the short circuit elastic constant decrease with the radial stress. The variations of the increased bandwidth and decreased electromechanical coupling coefficient (k31), piezoelectric constant (d31 and g31), and mechanical quality factor (Qm) are associated with the height-to-radius ratio. The properties of three cylindrical transducers applied with various radial stress show similar change tendencies, and a difference of 0.34 MPa radial stress results in a variation of approximately 13 in the bandwidth, 14 in Qm, 15 in k31, d31, and g31, and 16 in the amplitude of the first pulse. These results suggest that the consistency of the radial stress is essential, and it should be relatively small. These findings guide the design and preparation of the enhanced transducer.
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Affiliation(s)
- X F Zhang
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong 250022, China
| | - X J Lin
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong 250022, China
| | - C H Yang
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong 250022, China
| | - X Cheng
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong 250022, China
| | - S F Huang
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong 250022, China
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Yoneda J, Huang W, Feng M, Yang CH, Chan KW, Tanttu T, Gilbert W, Leon RCC, Hudson FE, Itoh KM, Morello A, Bartlett SD, Laucht A, Saraiva A, Dzurak AS. Coherent spin qubit transport in silicon. Nat Commun 2021; 12:4114. [PMID: 34226564 PMCID: PMC8257656 DOI: 10.1038/s41467-021-24371-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 05/23/2021] [Indexed: 11/09/2022] Open
Abstract
A fault-tolerant quantum processor may be configured using stationary qubits interacting only with their nearest neighbours, but at the cost of significant overheads in physical qubits per logical qubit. Such overheads could be reduced by coherently transporting qubits across the chip, allowing connectivity beyond immediate neighbours. Here we demonstrate high-fidelity coherent transport of an electron spin qubit between quantum dots in isotopically-enriched silicon. We observe qubit precession in the inter-site tunnelling regime and assess the impact of qubit transport using Ramsey interferometry and quantum state tomography techniques. We report a polarization transfer fidelity of 99.97% and an average coherent transfer fidelity of 99.4%. Our results provide key elements for high-fidelity, on-chip quantum information distribution, as long envisaged, reinforcing the scaling prospects of silicon-based spin qubits.
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Affiliation(s)
- J Yoneda
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia. .,Tokyo Tech Academy for Super Smart Society, Tokyo Institute of Technology, Tokyo, Japan.
| | - W Huang
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia.,Solid State Physics Laboratory, ETH Zurich, Zurich, Switzerland
| | - M Feng
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - C H Yang
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - K W Chan
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - T Tanttu
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - W Gilbert
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - R C C Leon
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - F E Hudson
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - K M Itoh
- School of Fundamental Science and Technology, Keio University, Yokohama, Japan
| | - A Morello
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - S D Bartlett
- Centre for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, NSW, Australia
| | - A Laucht
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - A Saraiva
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia
| | - A S Dzurak
- School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, Australia.
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Lu HS, Ye M, Cao XQ, Yang CH, Chen Q, Wu ZY, Hui WL, Lin MZ. [Auxiliary pathological diagnosis algorithm based on color moments for frozen-section of thyroid cancer]. Zhonghua Bing Li Xue Za Zhi 2021; 50:349-352. [PMID: 33831993 DOI: 10.3760/cma.j.cn112151-20200831-00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To develop a color-moment based model for frozen-section diagnosis of thyroid lesions, and to evaluate the model's value in the frozen-section diagnosis of thyroid cancer. Methods: In this study, 550 frozen thyroid pathological slides, including malignant and non-malignant cases, were collected from Taizhou Central Hospital (Taizhou University Hospital), China, between June 2018 and January 2020. The 550 digitalized frozen-section slides of thyroid were divided into training set (190 slides), validation set (48 slides), test set A (60 slides) and test set B (252 slides). The tumor regions on the slides of malignant cases in the training and validation sets were labeled by pathologists. The labeling information was then used to train the thyroid frozen-section diagnosis models based on the voting method and those based on the color moment. Finally, the performance of two pathological slide diagnosis models was evaluated using the test set A and test set B, respectively. Result: The classification accuracy of the thyroid frozen-section diagnosis model based on the voting method was 90.0% and 83.7%, using test sets A and B, respectively, while that based on color moments was 91.6% and 90.9%, respectively. For actual frozen-section diagnosis of thyroid cancer, the model developed in this study had higher accuracy and stability. Conclusion: This study proposes a color-moment based frozen-section diagnosis model, which is more accurate than other classification models for frozen-section diagnoses of thyroid cancer.
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Affiliation(s)
- H S Lu
- Department of Pathology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China
| | - M Ye
- Department of Pathology, Taizhou Hospital of Zhejiang Province, Linhai 317000, China
| | - X Q Cao
- Department of Pathology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China
| | - C H Yang
- Department of Pathology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China
| | - Q Chen
- Department of Pathology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China
| | - Z Y Wu
- School of Information Science and Technology, Northwest University, Xi'an 710127, China
| | - W L Hui
- Hangzhou Diyingjia Technology Co., Ltd,Hangzhou 311100, China
| | - M Z Lin
- Hangzhou Diyingjia Technology Co., Ltd,Hangzhou 311100, China
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Lee JS, Lee HS, Jang BI, Kim ES, Kim SK, Kim KO, Lee YJ, Lee HJ, Kim EY, Jung YJ, Yang CH. Low Bone Mineral Density in Young Patients Newly Diagnosed with Inflammatory Bowel Disease. Dig Dis Sci 2021; 66:605-611. [PMID: 32222926 DOI: 10.1007/s10620-020-06220-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/21/2019] [Accepted: 03/18/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND The prevalence and risk factors of low bone mineral density (BMD) in Asian patients newly diagnosed with inflammatory bowel disease (IBD) have not been fully suggested. AIMS We aimed to examine the prevalence and risk factors of low BMD in young Korean patients newly diagnosed with IBD. METHODS We prospectively enrolled 132 patients aged less than 50 years and newly diagnosed with IBD from six tertiary referral centers in Korea between November 2014 and April 2017. BMD was measured by dual-energy X-ray absorptiometry, and then the Z-score was determined. We defined low BMD as a Z-score ≤ - 1.0. RESULTS Of 68 patients with ulcerative colitis (UC), 22 (32.4%) had low BMD. Also, of 64 patients with Crohn's disease (CD), 24 (37.5%) showed low BMD. Results from multivariate regression analysis identified the risk factors for low BMD as a high level of alkaline phosphatase (ALP) (≥ 140 U/L) (P = 0.010) in UC patients, and being underweight (body mass index ≤ 18.5 kg/m2) (P = 0.017) in CD patients. CONCLUSIONS Our study showed that about one-third of newly diagnosed IBD Asian patients had low BMD. The clinical factors associated with low BMD were a high level of ALP in UC patients, and being underweight, in CD patients. Therefore, measurements of BMD in young patients should be considered at the diagnosis of IBD.
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Affiliation(s)
- Joon Seop Lee
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, 807 Hokuk-ro, Buk-gu, Daegu, 41404, Korea
| | - Hyun Seok Lee
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, 807 Hokuk-ro, Buk-gu, Daegu, 41404, Korea.
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Eun Soo Kim
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, 807 Hokuk-ro, Buk-gu, Daegu, 41404, Korea
| | - Sung Kook Kim
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, 807 Hokuk-ro, Buk-gu, Daegu, 41404, Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Hyun Jik Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Yun Jin Jung
- Department of Internal Medicine, Fatima Hospital of Daegu, Daegu, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Korea
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Yang CH, Duan CH, Wu ZY, Li Y, Luan YY, Fu XJ, Zhang CX, Zhang W. Effects of melatonin administration to cashmere goats on cashmere production and hair follicle characteristics in two consecutive cashmere growth cycles. Domest Anim Endocrinol 2021; 74:106534. [PMID: 32861956 DOI: 10.1016/j.domaniend.2020.106534] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
Abstract
The objective of the study was to determine the long-term effects of melatonin treatment on cashmere production and hair follicle populations in cashmere goats and their activity in two consecutive cashmere growth cycles. Twenty-four female Inner Mongolian Cashmere goats were randomly allocated to two groups (n = 12), one of which received melatonin implants, the other being an untreated control group. Melatonin implants were subcutaneously inserted behind the ear at a dose of 2 mg/kg live weight on two occasions -April 30 and June 30, 2016. Hair samples were collected by combing in April of 2017 and 2018, and the weight, staple length, and diameter of the cashmere fibers were measured. Blood and skin samples were collected monthly between April and September 2016, and in April and September in 2017 for the analysis of melatonin concentration and the characteristics of secondary hair follicle populations, respectively. The results indicated that serum melatonin concentration in the treated goats was elevated (P < 0.05) relative to that of the control group, but only during the first growth cycle. Melatonin treatment of cashmere goats in one cashmere growth cycle increased the weight, staple length, and density (all P < 0.05) of the cashmere fibers and decreased fiber diameter (P < 0.01), but did not affect the characteristics of cashmere production in the subsequent annual cycle. Melatonin treatment had no effect on the population of skin secondary hair follicles for two consecutive cycles. However, in the first growth cycle after treatment, it advanced the onset of activity of skin secondary hair follicles by 2 mo (P < 0.05), and it increased the number of follicles that were active (P < 0.05). In summary, the melatonin treatment of cashmere goats in one cashmere growth cycle improved cashmere production for that cycle only, with no residual effects on the subsequent cycle, a technique acceptable to the cashmere goat industry. The enhancement of cashmere production after the treatment of goats with melatonin appears to involve the acceleration of the annual regeneration of skin secondary hair follicles and increased population of active secondary hair follicles in the skin of cashmere goats.
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Affiliation(s)
- C H Yang
- Department of Animal Production, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - C H Duan
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Hebei Agricultural University, Baoding, 071000, China
| | - Z Y Wu
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural university, Beijing, China
| | - Y Li
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural university, Beijing, China
| | - Y Y Luan
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural university, Beijing, China
| | - X J Fu
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural university, Beijing, China
| | - C X Zhang
- Department of Animal Production, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.
| | - W Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural university, Beijing, China.
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Liu RY, Zeng YX, Yang CH, Wang LP. [Epidemiological characteristics of leptospirosis in Sichuan province, 2004-2018]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:695-699. [PMID: 32447909 DOI: 10.3760/cma.j.cn112338-20190703-00491] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To explore the epidemiological characteristics of leptospirosis in Sichuan province from 2004 to 2018, and provide evidence for the prevention and control of leptospirosis. Methods: The descriptive epidemiology analysis was conducted based on the epidemic data of leptospirosis collected from the national notifiable infectious disease reporting information system (NNIDRIS) and sentinel surveillance system in 11 areas in Sichuan from 2004 to 2018. The ArcGIS 10.2 software was used for mapping. The SaTScan 9.1.1 software was used to analyze spatiotemporal scanning and characteristics of temporal-spatial clusters of leptospirosis. Results: A total of 2 834 cases of leptospirosis, including 41 deaths, were reported in Sichuan from 2004 to 2018, and the reported morbidity rate was 0.23/100 000 and the mortality rate was 0.003/100 000. It revealed that leptospirosis had an overall downward fluctuated trend. The incidence of leptospirosis had obvious seasonality, mainly from the last ten-day of August to the end of September, 1-2 weeks later after rice harvesting time. The reported cases were mainly males, the male to female ratio of the cases was 2.05∶1. The incidence was higher in age group 50-65 years. The majority of reported cases were farmers, accounting for 82.75% (2 345/2 834), followed by students, accounting for 12.74% (361/2 834). However, rare cases in students had been reported since 2011. In recent years, the high-incidence areas were alternating between Mabian, Muchuan counties along the Yangtze River and Yilong county located in the Jialing River basin. According to the spatial-temporal descriptive analyses by SaTScan, there were two clustering areas in the province where most cases occurred (P<0.001). The average density of field rats in 11 sentinel surveillance areas was 5.44%(14 351/263 767), and the predominant field rats included Anourosorexsquamipes (69.07%), Apodemusagrarius (12.73%). Whatmore, the density of the Apodemusagrarius ranged from 4.60% to 0.19%, showing downward trend with the lowest level in 2018. The annual culture rate of Leptospira from rat kidney samples declined. During 2007-2018, the average positive rate of Leptospira antibodies in healthy people was 24.52%(3 271/13 339), and the predominant serogroup was Icterohaemorrhagiae. There was no replacement of Leptospira serogroup in recent years. Conclusions: The incidence of leptospirosis in Sichuan was extremely low during 2004-2018, and the incidence peak of leptospirosis occurred in rice harvesting period. The cases were mainly old farmers, and the high-risk areas were constantly alternating between the Yangtzi River and the Jialing River basin. Both the density and the carriage rate of Leptospira of Apodemusagrarius were low, and the predominant serogroup was Icterohaemorrhagiae. The average positive rate of leptospira antibodies in healthy people was very low.
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Affiliation(s)
- R Y Liu
- Department of Public Health Information, Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - Y X Zeng
- Institute for Acute Communicable Disease Control and Prevention, Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - C H Yang
- Department of Public Health Information, Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China
| | - L P Wang
- Department of Infectious Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Leon RCC, Yang CH, Hwang JCC, Lemyre JC, Tanttu T, Huang W, Chan KW, Tan KY, Hudson FE, Itoh KM, Morello A, Laucht A, Pioro-Ladrière M, Saraiva A, Dzurak AS. Coherent spin control of s-, p-, d- and f-electrons in a silicon quantum dot. Nat Commun 2020; 11:797. [PMID: 32047151 PMCID: PMC7012832 DOI: 10.1038/s41467-019-14053-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 12/11/2019] [Indexed: 11/09/2022] Open
Abstract
Once the periodic properties of elements were unveiled, chemical behaviour could be understood in terms of the valence of atoms. Ideally, this rationale would extend to quantum dots, and quantum computation could be performed by merely controlling the outer-shell electrons of dot-based qubits. Imperfections in semiconductor materials disrupt this analogy, so real devices seldom display a systematic many-electron arrangement. We demonstrate here an electrostatically confined quantum dot that reveals a well defined shell structure. We observe four shells (31 electrons) with multiplicities given by spin and valley degrees of freedom. Various fillings containing a single valence electron-namely 1, 5, 13 and 25 electrons-are found to be potential qubits. An integrated micromagnet allows us to perform electrically-driven spin resonance (EDSR), leading to faster Rabi rotations and higher fidelity single qubit gates at higher shell states. We investigate the impact of orbital excitations on single qubits as a function of the dot deformation and exploit it for faster qubit control.
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Affiliation(s)
- R C C Leon
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia.
| | - C H Yang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - J C C Hwang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
- Research and Prototype Foundry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - J Camirand Lemyre
- Institut Quantique et Département de Physique, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada
| | - T Tanttu
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - W Huang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - K W Chan
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - K Y Tan
- QCD Labs COMP Centre of Excellence, Department of Applied Physics, Aalto University, 00076, Aalto, Finland
| | - F E Hudson
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - K M Itoh
- School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohokuku, Yokohama, 223-8522, Japan
| | - A Morello
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - A Laucht
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - M Pioro-Ladrière
- Institut Quantique et Département de Physique, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada
- Quantum Information Science Program, Canadian Institute for Advanced Research, Toronto, ON, M5G 1Z8, Canada
| | - A Saraiva
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia.
| | - A S Dzurak
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia.
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13
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Kim ES, Lee HS, Kim SK, Kim EY, Jang BI, Kim KO, Yang CH, Lee YJ. Fecal calprotectin is more accurate than fecal immunochemical test for predicting mucosal healing in quiescent ulcerative colitis: a prospective multicenter study. Scand J Gastroenterol 2020; 55:163-168. [PMID: 31984815 DOI: 10.1080/00365521.2020.1714716] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Objective: Non-invasive stool tests, including the fecal immunochemical test (FIT) and fecal calprotectin (FC), are reliable biomarkers for mucosal healing (MH) in ulcerative colitis (UC). However, which fecal test is superior for predicting MH in inactive UC patients requires evaluation. We aimed to compare the accuracy of FIT and FC results for predicting MH in quiescent UC patients.Methods: This prospective, multicenter study was conducted at three tertiary hospitals. UC patients in clinical remission for at least three months underwent colonoscopy and MH was evaluated using the Mayo endoscopic sub-score (MES). The receiver operating characteristic (ROC) curve and cutoff value with the best accuracy for predicting MH were assessed.Results: Among 127 patients, 65 (51.2%) showed MH (MES = 0). The area under the curve (AUC) for predicting MH (MES = 0) was significantly higher for FC than for FIT (AUC 0.858 (95% confidence interval (CI) 0.784-0.913) vs. 0.707 (95% CI 0.620-0.784), p < .001); there was no difference when MH included MES = 1 (MES ≤ 1) (AUC 0.820 (95% CI 0.742-0.883) vs. 0.813 (95% CI 0.734-0.877), p = .891). When the cutoff value was 70 μg/g for FC and 10 ng/mL for FIT, the sensitivity, specificity, positive predictive value and negative predictive value were 89.2, 71, 76.3, and 86.3, respectively, for FC and 92.3, 50, 65.9, and 86.1, respectively, for FIT.Conclusion: FC is more accurate than FIT for predicting MH in quiescent UC patients. The superiority of FC might be related to the distinctive performance of FC in differentiating inflammatory levels, particularly in low-grade mucosal activity.
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Affiliation(s)
- Eun Soo Kim
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyun Seok Lee
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sung Kook Kim
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Eun Young Kim
- Division of Gastroenterology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Byung Ik Jang
- Division of Gastroenterology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Kyeong Ok Kim
- Division of Gastroenterology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Chang Heon Yang
- Division of Gastroenterology, Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Korea
| | - Yoo Jin Lee
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
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Chen WC, Lin WC, Yang CH, Wu CN, Luo SD. Autonomic dysfunction as an independent risk factor for uncontrolled inflammation in chronic rhinosinusitis following functional endoscopic sinus surgery. Rhinology 2019; 0:2224. [PMID: 31886799 DOI: 10.4193/rhin19.238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a multi-factorial disorder that causes systemic symptoms beyond rhinologic symptoms alone. A possible association between autonomic nervous system (ANS) dysfunction and CRS has been identified; however, few studies have confirmed this observation. In this study, we prospectively measured changes in ANS dysfunction symptoms following functional endoscopic sinus surgery (FESS) and explored the impact of ANS dysfunction on surgical outcomes of CRS. METHODOLOGY Patients diagnosed with CRS who consented to surgical intervention were included prospectively. All patients completed the Sino-nasal Outcome Test-22 (SNOT-22) and the 31-item Composite Autonomic Symptom Score (COMPASS 31) questionnaires before the operation and during the follow-up period. Clinical demographic data, Lund-Mackay, and modified Lund-Kennedy scores were recorded and measured. RESULTS A total of 102 patients were enrolled. The median SNOT-22 and COMPASS 31 scores significantly improved following FESS from 43.0 to 14.0 and 21.0 to 11.2 (all P less than 0.001), respectively. FESS led to a significant reduction in the prevalence of various ANS dysfunction symptoms. In multivariate analyses, revision surgeries (odds ratio [OR] 5.012, 95% confidence interval [CI] 1.52416.489; P=0.008), CRS with nasal polyps (OR 4.071, 95% CI 1.454-11.40; P=0.008), and higher Pre-FESS COMPASS 31 scores (OR 1.043, 95% CI 1.003-1.084; P=0.036) were independent risk factors for uncontrolled inflammation following FESS. CONCLUSIONS ANS dysfunction symptoms are prevalent in CRS and higher preoperative COMPASS 31 scores correspond with poor surgical outcomes. Following FESS, the majority of ANS dysfunction symptoms can be alleviated. Further investigations are required to explore the possible mechanism of how ANS is involved in the pathogenesis of CRS.
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Affiliation(s)
- W C Chen
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Tajen University College of Pharmacy and Health care, Pingtung, Taiwan
| | - W C Lin
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - C H Yang
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - C N Wu
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - S D Luo
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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15
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Zhao R, Tanttu T, Tan KY, Hensen B, Chan KW, Hwang JCC, Leon RCC, Yang CH, Gilbert W, Hudson FE, Itoh KM, Kiselev AA, Ladd TD, Morello A, Laucht A, Dzurak AS. Single-spin qubits in isotopically enriched silicon at low magnetic field. Nat Commun 2019; 10:5500. [PMID: 31796728 PMCID: PMC6890755 DOI: 10.1038/s41467-019-13416-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 11/06/2019] [Indexed: 11/09/2022] Open
Abstract
Single-electron spin qubits employ magnetic fields on the order of 1 Tesla or above to enable quantum state readout via spin-dependent-tunnelling. This requires demanding microwave engineering for coherent spin resonance control, which limits the prospects for large scale multi-qubit systems. Alternatively, singlet-triplet readout enables high-fidelity spin-state measurements in much lower magnetic fields, without the need for reservoirs. Here, we demonstrate low-field operation of metal-oxide-silicon quantum dot qubits by combining coherent single-spin control with high-fidelity, single-shot, Pauli-spin-blockade-based ST readout. We discover that the qubits decohere faster at low magnetic fields with [Formula: see text] μs and [Formula: see text] μs at 150 mT. Their coherence is limited by spin flips of residual 29Si nuclei in the isotopically enriched 28Si host material, which occur more frequently at lower fields. Our finding indicates that new trade-offs will be required to ensure the frequency stabilization of spin qubits, and highlights the importance of isotopic enrichment of device substrates for the realization of a scalable silicon-based quantum processor.
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Affiliation(s)
- R Zhao
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia.
- National Institute of Standards and Technology, 325 Broadway, Boulder, CO, 80305, USA.
| | - T Tanttu
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - K Y Tan
- QCD Labs, QTF Centre of Excellence, Department of Applied Physics, Aalto University, 00076, Aalto, Finland
- IQM Finland Oy, Vaisalantie 6 C, 02130, Espoo, Finland
| | - B Hensen
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - K W Chan
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - J C C Hwang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
- Research and Prototype Foundry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - R C C Leon
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - C H Yang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - W Gilbert
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - F E Hudson
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - K M Itoh
- School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - A A Kiselev
- HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, CA, 90265, USA
| | - T D Ladd
- HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, CA, 90265, USA
| | - A Morello
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - A Laucht
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia
| | - A S Dzurak
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, 2052, Australia.
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16
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He FN, Li YL, Fan ZG, Yang CH. [Analysis of evaluation results of malaria elimination in Jiujiang City]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 31:552-554. [PMID: 31713394 DOI: 10.16250/j.32.1374.2018148] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To analyze the evaluation results of malaria elimination and summarize the experience in Jiujiang City, so as to provide the evidence for formulating the surveillance work plan post-malaria elimination. METHODS According to the requirements and arrangements of Jiangxi Eliminating Malaria Action Plan (2010 - 2020), the evaluation of malaria elimination was completed in all 13 counties (cites and districts) of Jiujiang City from 2013 to 2016, and the data were collected and analyzed. RESULTS In Jiujiang City, the last local malaria case was reported in 2008. From 2010 to 2016, there were 20 imported malaria cases reported, including 12 cases of falciparum malaria, 7 cases of vivax malaria, and 1 case of mixed infection. Totally 67 501 fever patients were tested for Plasmodium and 13 cases were positive, with the positive rate of 0.02%. The comprehensive evaluation scores were between 88.75 and 98.15 in all the 13 counties (cities and districts), which meant they all reached the evaluative criteria. CONCLUSIONS All 13 counties (cities and districts) of Jiujiang City have passed the city level evaluative criteria of malaria elimination, and the key work should be the prevention and surveillance of imported malaria in the future.
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Affiliation(s)
- F N He
- Jiujiang Municipal Center for Disease Control and Prevention, Jiangxi Province, Jiujiang 332000, China
| | - Y L Li
- Jiujiang Municipal Center for Disease Control and Prevention, Jiangxi Province, Jiujiang 332000, China
| | - Z G Fan
- Ruichang Municipal Center for Disease Control and Prevention, Jiangxi Province, China
| | - C H Yang
- Jiujiang Municipal Center for Disease Control and Prevention, Jiangxi Province, Jiujiang 332000, China
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Kim ES, Kwon KT, Kim SK, Kim M, Lee HS, Jang BI, Kim KO, Kim EY, Lee YJ, Hong SJ, Yang CH, Kang B, Choe BH. Impact of Education on School Nurses' Knowledge of Inflammatory Bowel Disease. Gut Liver 2019; 13:48-53. [PMID: 30037169 PMCID: PMC6346995 DOI: 10.5009/gnl18139] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/29/2018] [Accepted: 06/17/2018] [Indexed: 11/25/2022] Open
Abstract
Background/Aims School nurses’ knowledge of inflammatory bowel disease (IBD) has not been evaluated. We aimed to investigate school nurses’ knowledge of IBD and determine whether education could improve this knowledge. Methods School nurses were invited to complete self-reported questionnaires on IBD. Then, IBD specialists from tertiary referral hospitals provided a 60-minute lecture with educational brochures on two occasions, with a 3-month interval. Within 6 months after the educational interventions, school nurses were asked to complete the same IBD questionnaire via e-mail. Results Among 101 school nurses who were invited to participate, 54 nurses (53.5%) who completed two consecutive questionnaires were included in this study (median age, 45 years; range, 25 to 59 years; 100% female); 11.1% and 7.4% of the study participants had no knowledge regarding ulcerative colitis and Crohn’s disease, respectively. They had heard of IBD most frequently from doctors (33.3%), followed by internet sources (25.9%). After 6 months, the number of nurses who could explain IBD to students with over 30% confidence increased from 24 (44.5%) to 42 (77.8%) (p<0.001). Most nurses (81.5%) reported that the educational intervention was helpful for managing students with abdominal pain or diarrhea. The number of students who received IBD-related welfare services from the Daegu Metropolitan Office of Education doubled when compared with the corresponding number during the prior educational year. Conclusions There is room for improvement in school nurses’ knowledge of IBD. A systematic educational program on IBD should be implemented for these nurses.
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Affiliation(s)
- Eun Soo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Ki Tae Kwon
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sung Kook Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Miyoung Kim
- Keimyung University College of Nursing, Daegu, Korea
| | - Hyun Seok Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Suk Jin Hong
- Department of Pediatrics, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Korea
| | - Ben Kang
- Department of Pediatrics, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Byung-Ho Choe
- Department of Pediatrics, School of Medicine, Kyungpook National University, Daegu, Korea
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18
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Kim JS, Kim BW, Park SM, Shim KN, Jeon SW, Kim SW, Lee YC, Moon HS, Lee SH, Jung WT, Kim JI, Kim KO, Park JJ, Chung WC, Kim JH, Baik GH, Oh JH, Kim SM, Kim HS, Yang CH, Jung JT, Lim CH, Song HJ, Kim YS, Kim GH, Kim JH, Chung JI, Lee JH, Choi MH, Choi JK. Factors Associated with Rebleeding in Patients with Peptic Ulcer Bleeding: Analysis of the Korean Peptic Ulcer Bleeding (K-PUB) Study. Gut Liver 2018; 12:271-277. [PMID: 29409302 PMCID: PMC5945258 DOI: 10.5009/gnl17138] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 07/10/2017] [Accepted: 09/14/2017] [Indexed: 01/01/2023] Open
Abstract
Background/Aims Rebleeding is associated with mortality in patients with peptic ulcer bleeding (PUB), and risk stratification is important for the management of these patients. The purpose of our study was to examine the risk factors associated with rebleeding in patients with PUB. Methods The Korean Peptic Ulcer Bleeding registry is a large prospectively collected database of patients with PUB who were hospitalized between 2014 and 2015 at 28 medical centers in Korea. We examined the basic characteristics and clinical outcomes of patients in this registry. Univariate and multivariate analyses were performed to identify the factors associated with rebleeding. Results In total, 904 patients with PUB were registered, and 897 patients were analyzed. Rebleeding occurred in 7.1% of the patients (64), and the 30-day mortality was 1.0% (nine patients). According to the multivariate analysis, the risk factors for rebleeding were the presence of co-morbidities, use of multiple drugs, albumin levels, and hematemesis/hematochezia as initial presentations. Conclusions The presence of co-morbidities, use of multiple drugs, albumin levels, and initial presentations with hematemesis/hematochezia can be indicators of rebleeding in patients with PUB. The wide use of proton pump inhibitors and prompt endoscopic interventions may explain the low incidence of rebleeding and low mortality rates in Korea.
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Affiliation(s)
- Joon Sung Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Byung-Wook Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Sung Min Park
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Ki-Nam Shim
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, Korea
| | - Seong Woo Jeon
- Deparment of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang-Wook Kim
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Yong Chan Lee
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Seok Moon
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Si Hyung Lee
- Department of Internal Medicine, Yeungnam University School of Medicine, Daegu, Korea
| | - Woon Tae Jung
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jin Il Kim
- Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyoung Oh Kim
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Jong-Jae Park
- Division of Gastroenterology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Woo Chul Chung
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Jeong Hwan Kim
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Gwang Ho Baik
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Korea
| | - Jung Hwan Oh
- Department of Internal Medicine, St. Paul Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sun Moon Kim
- Department of Internal Medicine, Konyang University Hospital, Daejeon, Korea
| | - Hyun Soo Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
| | - Jin Tae Jung
- Division of Gastroenterology, Department of Internal Medicine, Daegu Catholic University College of Medicine, Daegu, Korea
| | - Chul Hyun Lim
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun Joo Song
- Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea
| | - Yong Sik Kim
- Department of Internal Medicine, Eulji University College of Medicine, Daejeon, Korea
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Jie-Hyun Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Il Chung
- Department of Internal Medicine, Sahmyook Medical Center, Seoul, Korea
| | - Jun Haeng Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Min Ho Choi
- Department of Internal Medicine, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Jong-Kyoung Choi
- Department of Internal Medicine, National Medical Center, Seoul, Korea
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Wu MY, Wang CH, Ng CY, Kuo TT, Chang YC, Yang CH, Lin JY, Ho HC, Chung WH, Chen CB. Periorbital erythema and swelling as a presenting sign of lupus erythematosus in tertiary referral centers and literature review. Lupus 2018; 27:1828-1837. [PMID: 30134759 DOI: 10.1177/0961203318792358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Cutaneous lupus erythematosus (CLE) includes a broad range of dermatologic manifestations. Periorbital involvement, however, is a relatively rare clinical presentation of CLE. Objectives This clinical study aimed to investigate the characteristics of this unique presentation of CLE in tertiary medical centers. Methods We enrolled patients with periorbital erythema and swelling as the presenting sign of lupus erythematosus, from January 2003 to November 2017, using the data of 553 pathologically proven CLE cases from the registration database of the Chang Gung Memorial Hospitals in Taiwan. Results We enrolled a total of 25 patients. The mean age was 46.7 years and 68% of the patients were female. Most of the patients (84.0%) presented with unilateral involvement, with the left orbit involved in 15 patients (60%); the upper eyelid was the most frequently involved (72%). Mean duration between the onset of clinical manifestations and the diagnosis of CLE was approximately 59 weeks. Nineteen patients had been previously misdiagnosed. All patients had features compatible with CLE on histopathological examination. In contrast, laboratory analysis of the autoimmune profile often revealed negative results, including those for antinuclear antibodies (25%). Notably, anti-SSA/SSB (45.5%) showed the highest positive rate. During follow-up, six patients developed systemic lupus erythematosus (SLE) and two patients developed Sjögren syndrome. Conclusions The diagnosis of CLE presenting as periorbital erythema and swelling is often delayed because of clinical mimicry and the high proportion of negative results on autoantibody tests. Increased clinical suspicion and prompt histopathological examination are crucial for early diagnosis. Moreover, one-fourth of the patients ultimately developed SLE, which highlights the importance of clinical awareness.
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Affiliation(s)
- M Y Wu
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C H Wang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C Y Ng
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,7 Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - T T Kuo
- 2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,7 Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Y C Chang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C H Yang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - J Y Lin
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - H C Ho
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - W H Chung
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,4 Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,5 Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.,6 Department of Dermatology, Chang Gung Memorial Hospital, Xiamen, China
| | - C B Chen
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,3 Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,4 Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,5 Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.,6 Department of Dermatology, Chang Gung Memorial Hospital, Xiamen, China
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20
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Yeo SJ, Lee HS, Jang BI, Kim ES, Jeon SW, Kim SK, Kim KO, Lee YJ, Lee HJ, Park KS, Jung YJ, Kim EY, Yang CH. Nonimmunity against hepatitis B virus infection in patients newly diagnosed with inflammatory bowel disease. Intest Res 2018; 16:400-408. [PMID: 30090039 PMCID: PMC6077318 DOI: 10.5217/ir.2018.16.3.400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 12/16/2022] Open
Abstract
Background/Aims This study aimed to elucidate the prevalence of hepatitis B virus (HBV) serologic markers in Korean patients newly diagnosed with, but not yet treated for inflammatory bowel disease (IBD). Methods We prospectively enrolled 210 patients newly diagnosed with IBD (109 with ulcerative colitis and 101 with Crohn's disease). Hepatitis B surface antigen (HBsAg), hepatitis B surface antibody (anti-HBs), and hepatitis B core antibody (anti-HBc) levels were measured and compared with those of 1,100 sex- and age-matched controls. Results The prevalence of chronic HBV infection (positive HBsAg, positive anti-HBc, and negative anti-HBs results) and past infection (negative HBsAg, positive anti-HBc, and positive or negative anti-HBs results) were not significantly different between the patients and controls (chronic HBV infection: IBD, 3.8% vs. control, 4.9%, P=0.596; past infection: IBD, 26.2% vs. control, 28.8%, P=0.625). The patients with IBD aged <20 years were at a higher susceptibility risk (nonimmune) for HBV infection than the controls (IBD, 41.5% vs. control, 22.4%; P=0.018). In the multivariate analysis, an age of <20 years (P=0.024) and symptom duration of ≥12 months before diagnosis (P=0.027) were identified as independent risk factors for nonimmunity against HBV infection. Conclusions The patients newly diagnosed with IBD were susceptible to HBV infection. The frequency of nonimmunity was high, especially in the patients aged <20 years and those with a longer duration of symptoms before diagnosis. Therefore, it is necessary to screen for HBV serologic markers and generate a detailed vaccination plan for patients newly diagnosed with IBD.
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Affiliation(s)
- Seong Jae Yeo
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyun Seok Lee
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Eun Soo Kim
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sung Kook Kim
- Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Hyun Jik Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Yun Jin Jung
- Department of Internal Medicine, Daegu Fatima Hospital, Daegu, Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Korea
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Abstract
Recent advances in quantum error correction codes for fault-tolerant quantum computing and physical realizations of high-fidelity qubits in multiple platforms give promise for the construction of a quantum computer based on millions of interacting qubits. However, the classical-quantum interface remains a nascent field of exploration. Here, we propose an architecture for a silicon-based quantum computer processor based on complementary metal-oxide-semiconductor (CMOS) technology. We show how a transistor-based control circuit together with charge-storage electrodes can be used to operate a dense and scalable two-dimensional qubit system. The qubits are defined by the spin state of a single electron confined in quantum dots, coupled via exchange interactions, controlled using a microwave cavity, and measured via gate-based dispersive readout. We implement a spin qubit surface code, showing the prospects for universal quantum computation. We discuss the challenges and focus areas that need to be addressed, providing a path for large-scale quantum computing. Realisation of large-scale quantum computation requires both error correction capability and a large number of qubits. Here, the authors propose to use a CMOS-compatible architecture featuring a spin qubit surface code and individual qubit control via floating memory gate electrodes.
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Affiliation(s)
- M Veldhorst
- Qutech and Kavli Institute of Nanoscience, TU Delft, 2600, GA Delft, The Netherlands. .,Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia.
| | - H G J Eenink
- Qutech and Kavli Institute of Nanoscience, TU Delft, 2600, GA Delft, The Netherlands.,Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - C H Yang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - A S Dzurak
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, NSW, 2052, Australia.
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22
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Yang CH, Huang YC, Kuo WT. Spontaneous Rupture of Splenic Varices: A Rare but Lethal Complication of Portal Hypertension from Cirrhosis. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791402100205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Intra-abdominal varices rupture is a rare but catastrophic complication in cirrhosis. We report our near-miss experience in a woman presenting with acute abdominal pain and shock. This 55-year-old cirrhotic woman presented with sudden onset of epigastric pain. On arrival, her blood pressure was 57/49 mmHg and physical examination revealed epigastric tenderness without rebounding tenderness. Emergency ultrasonography (EUS) showed intra-abdominal haemorrhage. Computed tomography revealed haemoperitoneum but no extravasation of contrast medium. She received conservative treatment first but laparotomy later for ongoing bleeding. Surgeon identified and ligated a ruptured splenic varix and she was discharged home after nine days of hospitalisation. This case report illustrates the use of bedside EUS in cirrhotic patients presenting with acute abdominal pain. (Hong Kong j.emerg.med. 2014;21:120-123)
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Affiliation(s)
| | - YC Huang
- Kaohsiung Medical University, Department of Emergency Medicine, School of Medicine, 100 Shih-Chuan 1st Road, Kaohsiung, 80708, Taiwan
| | - WT Kuo
- Chiayi Christian Hospital, Division of General Surgery, Department of Surgery, 539 Chuan-Hsiau Road, Chiayi City, 60002, Taiwan
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23
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Kim ES, Park KS, Cho KB, Kim KO, Jang BI, Kim EY, Jung JT, Jeon SW, Jung MK, Lee HS, Yang CH, Lee YK. Development of a Web-based, self-reporting symptom diary for Crohn's Disease, and its correlation with the Crohn's Disease Activity Index. J Crohns Colitis 2017; 11:1449-1455. [PMID: 25246007 DOI: 10.1016/j.crohns.2014.09.003] [Citation(s) in RCA: 8] [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] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Crohn's Disease Activity Index (CDAI) is complex, time-consuming, and impractical. The aim of this study was to investigate whether a newly developed, simple, web-based self-reporting Crohn's Disease symptom diary (CDSD) was as effective as CDAI in assessing disease severity. METHODS CDSD consisted of 5 clinical parameters based on the Harvey-Bradshaw Index (HBI), which could easily be recorded online, by using CDSD website (www.cdsd.or.kr). Images were added to help patients better understand complications. All patients were asked to visit the website and record their symptoms 7 days before their next hospital appointment. CDAI scores were calculated at the subsequent hospital visit. The collected data were analyzed to determine if the CDAI scores correlated with those obtained from CDSD, and to define a cut-off value of CDSD that would be representative of disease remission. RESULTS Analysis of 171 visits showed a positive correlation between scores from CDSD and CDAI (Spearman correlation coefficient r = 0.720, p < 0.001). Receiver Operating Characteristic curves showed CDSD score ≤5 points as corresponding with CDAI score ≤150 points (clinical remission). Using a cut-off value of 5 points by CDSD, the positive and negative predictive values for clinical remission were 91.7% and 88.5%, respectively. CONCLUSION This study demonstrates that CDSD correlated well with CDAI. CDSD score of 5 is the cut-off value for clinical remission (CDAI score ≤150). Use of CDSD might permit a simple, patient-friendly assessment of CD activity, which can provide useful early-phase information on patients with CD as part of their long-term clinical assessment.
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Affiliation(s)
- Eun Soo Kim
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kyung Sik Park
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kwang Bum Cho
- Division of Gastroenterology, Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kyeong Ok Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - Byung Ik Jang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - Eun Young Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Jin Tae Jung
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Seong Woo Jeon
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Min Kyu Jung
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Hyun Seok Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Chang Heon Yang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Gyeongsang-buk-do, Republic of Korea
| | - Yong Kook Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju, Gyeongsang-buk-do, Republic of Korea
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24
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Narayanan R, Ponnusamy S, Fan M, Yang CH, Grimes BL, Fleming MD, Pritchard EF, Berry MP, Oswaks RM, Fine RE, Loiseau JC, Schwartzberg LS, Pfeffer LM. Abstract P6-12-06: Nonsteroidal, tissue selective androgen receptor modulator (SARM), enobosarm, reduces growth of androgen receptor-positive breast cancer in patient-derived preclinical models. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-12-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: In breast cancer the androgen receptor (AR) is the most abundantly expressed steroid receptor with 75-95% of estrogen receptor (ER)-positive and 40-70% of ER-negative breast cancers expressing the AR. Historically, advanced breast cancer has been treated with androgens, resulting in significant clinical response. However, the use of steroidal androgens fell from favor as a result of their virilizing side effects. Nonsteroidal, tissue selective androgen receptor modulators (SARMs) will provide a novel targeted approach to exploit the therapeutic benefits of androgens in breast cancer.
Aims: To test the effects of enobosarm (a first-in-class SARM) and enzalutamide (AR antagonist) on the growth of patient-derived breast cancer xenografts (PDX) and to discern the mechanism of action of AR-targeted therapies in AR-positive breast cancer.
Materials and Methods: AR-positive PDXs with varying receptor expression (ER, progesterone receptor (PR), and HER2) were implanted in immunecompromised mice. Mice carrying PDXs were treated with vehicle, 10 mg/kg/day (mpk) enobosarm (GTx, Inc., Memphis, TN), or 20 mpk enzalutamide (Medivation Inc.), orally. Tumor volume was measured twice or thrice weekly. Tumors that received enobosarm were further analyzed to determine the mechanism of action.
Results: Enobosarm significantly (p<0.01) inhibited the growth of ER-, PR-, and HER2- positive HCI-7 and ER- and PR- negative and HER2-positive HCI-12 PDX. While enobosarm inhibited the growth of HCI-12 by ~80% and HCI-7 by ~60%, enzalutamide failed to inhibit the growth of the HCI-7 PDX. In contrast, neither enobosarm nor enzalutamide inhibited the growth of ER- and PR-negative and HER2-positive HCI-9 PDX, consistent with the heterogeneity of AR-positive breast cancers. Growth of two triple-negative breast cancer (TNBC) PDXs were inhibited by 30-40% by enobosarm, but not by enzalutamide. These results were reproduced in xenografts developed with breast cancer cell lines, MCF-7 and MDA-MB-231 expressing the AR. Gene expression studies conducted with the HCI-12 tumors indicated that enobosarm inhibited the expression of various proliferative genes (MUC2, IL10RA, IGSF1, SLC6A4, and others) and increased the expression of growth inhibitory genes (CYP4F8, MYBPC1, and others). Ingenuity pathway analysis demonstrated that enobosarm inhibited genes that are downstream of HER2 signaling. Interestingly, miR-21-3p, which has been implicated in chemo-resistance, was consistently expressed at approximately 10-50-fold higher than miR-21-5p in PDXs. This imbalance was partially reversed by enobosarm.
Conclusion: These results indicate that AR-positive breast cancers are highly heterogeneous and that enobosarm has promise as novel targeted therapy to treat AR-positive breast cancer. Enobosarm is currently in phase II clinical trial in both ER-positive breast cancer and in TNBC patients.
Citation Format: Narayanan R, Ponnusamy S, Fan M, Yang CH, Grimes BL, Fleming MD, Pritchard EF, Berry MP, Oswaks RM, Fine RE, Loiseau J-C, Schwartzberg LS, Pfeffer LM. Nonsteroidal, tissue selective androgen receptor modulator (SARM), enobosarm, reduces growth of androgen receptor-positive breast cancer in patient-derived preclinical models [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-12-06.
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Affiliation(s)
- R Narayanan
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - S Ponnusamy
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - M Fan
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - CH Yang
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - BL Grimes
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - MD Fleming
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - EF Pritchard
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - MP Berry
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - RM Oswaks
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - RE Fine
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - J-C Loiseau
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - LS Schwartzberg
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
| | - LM Pfeffer
- University of Tennessee Health Science Center, Memphis, TN; West Cancer Center, Memphis, TN
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25
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Yang CH, Kwon YS, Shin HK. Characteristics of Intramolecular Charge Transfer by J-Aggregates in Merocyanine Dye LB Films. J Nanosci Nanotechnol 2016; 16:6322-6326. [PMID: 27427711 DOI: 10.1166/jnn.2016.12141] [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
In this study, for the development of future molecular electronic devices, we have investigated the characteristics of the aggregates of Langmuir-Blodgett films. The characteristics of intramolecular charge transfer by J-aggregates in merocyanine dye LB films have been studied experimentally by using UV irradiation and heat treatment. In addition to intramolecular charge transfer, we also studied the conjugation and energy changes of the molecules. In case a dye is thinned by LB method, the alkyl chain is often displaced in order to form a mono-molecular film with ease. Since the molecular association form is often made by self-organization of molecules themselves, in case the dye and the alkyl chain are strongly bonded by the covalent bond, it may be said that the properties of the LB film to be built up are almost determined at the time of synthesis of film-forming molecules. Meanwhile, since, in case LB film is fabricated by the diffusion absorption method, the cohesive force between the water-soluble dye and the surface-active mono-molecular film is electrostatic, the dye molecule can move relatively freely on the air/water interface, which may be regarded as a two-dimensional crystal growth process.
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26
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Li H, Jiang Q, Ju ZH, Huang JM, Wang XG, Yang CH, Sun Y, Yang GW, Zhong JF, Wang CF. A novel splice variant of the bovine GALNTL5 gene identified in Chinese Holstein bull testis tissue and its mRNA expression. Genet Mol Res 2016; 15:gmr7723. [PMID: 27173285 DOI: 10.4238/gmr.15027723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The polypeptide N-acetylgalactosaminyltransferase-like protein 5 (GALNTL5) is a newly identified protein that is specifically expressed in testis tissue and participates in spermatogenesis. In this study, we characterized a novel bovine GALNTL5 splice variant, designated as GALNTL5-AS, by using real-time polymerase chain reaction (RT-PCR) and clone sequencing methods. The novel GALNTL5 isoform was derived from the complete transcript, GALNTL5-complete, via alternative splicing (AS). The pattern of the splice variant was exon skipping. Bovine GALNTL5 transcripts were expressed in the testis, as demonstrated by RT-PCR. The expression levels of both transcripts were higher in adult testes than in calf testes (P < 0.05). In addition, prediction analysis showed that the GALNTL5-AS transcript only encoded 122 amino acids and lost its glycosyltransferase 1 and Gal/GalNAc-T motifs, which may result in a dysfunctional protein compared with the predominant transcript GALNTL5-complete. This study improves our understanding of the bovine GALNTL5 gene function during bull sperm formation.
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Affiliation(s)
- H Li
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China.,College of Life Science, Shandong Normal University, Jinan, China
| | - Q Jiang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Z H Ju
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - J M Huang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - X G Wang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - C H Yang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Y Sun
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - G W Yang
- College of Life Science, Shandong Normal University, Jinan, China
| | - J F Zhong
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - C F Wang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
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27
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Huang JM, Wang XG, Jiang Q, Sun Y, Yang CH, Ju ZH, Hao HS, Wang CF, Zhong JF, Zhu HB. Identification of CD14 transcript in blood polymorphonuclear neutrophil leukocytes and functional variation in Holsteins. Genet Mol Res 2016; 15:gmr7932. [PMID: 27173290 DOI: 10.4238/gmr.15027932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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
Polymorphonuclear neutrophil (PMN) leukocytes are primary phagocytic cells of the bovine mammary gland and a first line of defense against invading pathogens during bovine mastitis infection. Cluster of differentiation 14 (CD14) is mainly expressed in macrophages and neutrophils and acts as a co-receptor that binds bacterial lipopolysaccharide (LPS) and recruits PMNs to CD14-LPS complexes in mammary epithelial cells. In this study, we identified a novel splice variant in PMNs, named CD14-SV, characterized by a deleted region from c.143-579 nt compared to the CD14 reference mRNA sequence. Moreover, a single nucleotide polymorphism (c.523 A>G) in exon 2 of CD14 was identified and found to modify the secondary structure and hydrophilicity of the CD14 protein. Association analysis also showed that the milk somatic cell score, an indicator of mastitis, of cows with the GG genotype was lower than that of cows with the AA and AG genotypes. Our findings suggest that the expression of CD14 in bovine blood PMNs is regulated by alternative splicing, and that CD14-SV is a candidate functional marker that may influence mastitis-resistance in dairy cows.
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Affiliation(s)
- J M Huang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.,Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - X G Wang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Q Jiang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Y Sun
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - C H Yang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - Z H Ju
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - H S Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - C F Wang
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - J F Zhong
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong, China
| | - H B Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Abstract
The objective of this study was to investigate the clinical effects of Tripterygium wilfordii on chronic glomerulo nephritis (CGN) and its mechanisms. Eighty-two cases of CGN treated in our hospital were randomly divided into observation and control groups. The control group was treated with conventional western medicine, and the observation group was treated with conventional western medicine and orally-administered T. wilfordii pills for three courses of treatment, each consisting of 4 weeks. Changes in serum reatinine, blood urea nitrogen, blood total cholesterol, blood albumin, and 24-h urine protein were observed. The levels of peripheral tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were determined with enzyme-linked immunosorbent assay. The curative effects of both groups were evaluated respectively. Both groups had significantly improved serum creatinine, blood urea nitrogen, blood total cholesterol, blood albumin, and 24-h urine protein (P < 0.05), and the observation group exhibited a more significant improvement (P < 0.05). TNF-α and IL-6 levels in both groups obviously decreased (P < 0.05), and the observation group exhibited remarkable changes (P < 0.05). After treatment, the total efficiency of the observation group was 90.24%, which was significantly higher than the 73.17% of the control group (P < 0.05). In conclusion, T. wilfordii can significantly improve kidney function and clinical symptoms in CGN patients, and the mechanism is possibly related to its inhibition of the secretion of TNF-α and IL-6.
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Affiliation(s)
| | | | - X L Zhang
- Department of Nephropathy and Rheumatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
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Kim SB, Lee SH, Kim KO, Jang BI, Kim TN, Jeon SW, Kwon JG, Kim EY, Jung JT, Park KS, Cho KB, Kim ES, Kim HJ, Park CK, Park JB, Yang CH. Risk Factors Associated with Rebleeding in Patients with High Risk Peptic Ulcer Bleeding: Focusing on the Role of Second Look Endoscopy. Dig Dis Sci 2016; 61:517-22. [PMID: 26297133 DOI: 10.1007/s10620-015-3846-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/04/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Re-bleeding after initial hemostasis in peptic ulcer bleeding can be life threatening. Identification of factors associated with re-bleeding is important. The aims of this study were to determine incidence of rebleeding in patients with high risk peptic ulcer bleeding and to evaluate factors associated with rebleeding. METHODS Among patients diagnosed as upper gastrointestinal hemorrhage at seven hospitals in Daegu-Gyeongbuk, and one hospital in Gyeongnam, South Korea, from Feb 2011 to Dec 2013, 699 patients diagnosed as high risk peptic ulcer bleeding with Forrest classification above llb were included. The data were obtained in a prospective manner. RESULTS Among 699 patients, re-bleeding occurred in 64 (9.2 %) patients. Second look endoscopy was significantly more performed in the non-rebleeding group than the rebleeding group (81.8 vs 62.5 %, p < 0.001). In multivariate analysis, use of non-steroidal anti-inflammatory agents, larger transfusion volume (≥5 units), and non-performance of second look endoscopy were found as risk factors for rebleeding in high risk peptic ulcer bleeding. CONCLUSION In our study, rebleeding was observed in 9.2 % of patients with high risk peptic ulcer bleeding. Performance of second look endoscopy seems to lower the risk of rebleeding in high risk peptic ulcer bleeding patients and caution should be paid to patients receiving high volume transfusion and on medication with NSAIDs.
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Affiliation(s)
- Sung Bum Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, 317-1 Daemyung-dong, Nam-gu, 705-703, Republic of Korea
| | - Si Hyung Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, 317-1 Daemyung-dong, Nam-gu, 705-703, Republic of Korea.
| | - Kyeong Ok Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, 317-1 Daemyung-dong, Nam-gu, 705-703, Republic of Korea
| | - Byung Ik Jang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, 317-1 Daemyung-dong, Nam-gu, 705-703, Republic of Korea
| | - Tae Nyeun Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, 317-1 Daemyung-dong, Nam-gu, 705-703, Republic of Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Joong Goo Kwon
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Jin Tae Jung
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kwang Bum Cho
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Eun Soo Kim
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Hyun Jin Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Chang Keun Park
- Department of Internal Medicine, Daegu Fatima Hospital, Daegu, Republic of Korea
| | - Jeong Bae Park
- Department of Internal Medicine, Dongguk University School of Medicine, Daegu, Republic of Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Daegu, Republic of Korea
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Yang HM, Jeon SW, Jung JT, Lee DW, Ha CY, Park KS, Lee SH, Yang CH, Park JH, Park YS. Comparison of scoring systems for nonvariceal upper gastrointestinal bleeding: a multicenter prospective cohort study. J Gastroenterol Hepatol 2016. [PMID: 26211939 DOI: 10.1111/jgh.13057] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIM The Glasgow-Blatchford score (GBS) and Rockall score (RS) are widely used to assess risk in patients with upper gastrointestinal bleeding (UGIB). We compared both scoring systems and evaluated their clinical usefulness. METHODS Between February 2011 and December 2013, 1584 patients with nonvariceal UGIB were included in the study. A prospective study was conducted to compare the performance of the GBS, pre-RS, and full RS. We compared the performance of these scores using receiver operating characteristic curves. RESULTS For prediction of the need for hospital-based intervention, the GBS was similar to the full RS (area under the receiver operating characteristic curves [AUROC] 0.705 vs 0.727; P = 0.282) and superior to the pre-RS (AUROC 0.705 vs 0.601; P < 0.0001). In predicting death, the full RS was superior to the GBS (AUROC 0.758 vs 0.644; P = 0.0006) and similar to the pre-RS (AUROC 0.758 vs 0.754; P = 0.869). In predicting rebleeding, the full RS was superior to both GBS (AUROC 0.642 vs 0.585; P = 0.031) and pre-RS (AUROC 0.642 vs 0.593; P = 0.0003). Of 1584 patients, 13 (0.8%) scored 0 on the GBS. Therapeutic intervention was not performed in any of these patients. CONCLUSIONS The GBS is more useful than the pre-RS for predicting the need for hospital-based intervention. A cutoff value of 0 for low-risk patients who might be suitable for outpatient management is useful. The full RS is helpful in predicting death. None of the systems accurately predict rebleeding with a low AUROC. ( CLINICAL TRIAL cris.nih.go.kr/KCT0000514).
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Affiliation(s)
- Hae Min Yang
- Department of Internal Medicine, Kyungpook National University Hospital/ School of Medicine
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University Hospital/ School of Medicine
| | - Jin Tae Jung
- Department of Internal Medicine, Catholic University of Daegu School of Medicine
| | - Dong Wook Lee
- Department of Internal Medicine, Catholic University of Daegu School of Medicine
| | - Chang Yoon Ha
- Department of Internal Medicine, Gyeongsang National University Hospital, Jinju
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University School of Medicine
| | - Si Hyung Lee
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju
| | - Jun Hyung Park
- Department of Internal Medicine, Dongguk University School of Medicine, Gyeongju
| | - Youn Sun Park
- Department of Internal Medicine, Soonchunhyang University Hospital, Gumi, South Korea
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Yeo SH, Kwak JH, Kim YU, Kwon TH, Park JB, Park JH, Lee YK, Lim YJ, Yang CH. Comparative Study on Bowel Preparation Efficacy of Ascorbic Acid Containing Polyethylene Glycol by Adding Either Simethicone or 1 L of Water in Health Medical Examination Patients: A Prospective Randomized Controlled Study. Korean J Gastroenterol 2016; 67:189-97. [DOI: 10.4166/kjg.2016.67.4.189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Se Hwan Yeo
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Jae Hoon Kwak
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Yeo Un Kim
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Tae Ho Kwon
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Jeong Bae Park
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Jun Hyung Park
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Yong Kook Lee
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
| | - Yun Jeong Lim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Dongguk University College of Medicine, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Gyeongju, Dongguk University College of Medicine, Korea
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Wu J, Lee YY, Su SC, Wu TS, Kao KC, Huang CC, Chang WC, Yang CH, Chung WH. Stevens-Johnson syndrome and toxic epidermal necrolysis in patients with malignancies. Br J Dermatol 2015. [PMID: 26218033 DOI: 10.1111/bjd.14052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Malignancy is known to be associated with an increased mortality rate in patients with Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). However, risk factors contributing to the poor prognosis of patients with SJS/TEN with malignancies remain undefined. OBJECTIVES To explore the potential involvement of malignancy and its related factors contributing to the poor outcome of SJS/TEN, in a retrospective study. METHODS In total 517 patients with SJS/TEN were enrolled. Forty-seven who sustained various types of malignancies were analysed for numerous malignancy-related factors, including cancer types, clinical stages and chemotherapies given or not before the onset of SJS/TEN. RESULTS We found that the mortality rate of patients with SJS/TEN with malignancies was higher than that of patients without malignancies (32%, 15/47 vs. 8·5%, 40/470, respectively) (P < 0·001). The use of phenytoin was significantly higher in the malignancy group. The presence of hepatocellular carcinoma (80%, four of five; P < 0·001; odds ratio 43) and colorectal cancer (67%, two of three; P = 0·022; odds ratio 21·5) significantly increased the death rate of patients with SJS/TEN, whereas lung cancer and urothelial carcinoma did not. Patients who had received ongoing or recent chemotherapy showed higher mortality than those without chemotherapy (P = 0·022; odds ratio 4·95). Furthermore, among the 47 patients with SJS/TEN with malignancies, lower serum albumin, haemoglobin and platelet count were detected in the deceased patients than in the surviving patients before the onset of SJS/TEN. CONCLUSIONS Our results suggest that several factors related to malignancies, such as specific cancer types, chemotherapy and malnutrition, may contribute to poor prognosis in patients with malignancies developing SJS/TEN.
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Affiliation(s)
- J Wu
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Y Y Lee
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - S C Su
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - T S Wu
- College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Department of Infectious Disease, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan
| | - K C Kao
- College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan
| | - C C Huang
- College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan
| | - W C Chang
- College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Department of Hematology-Oncology, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan
| | - C H Yang
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - W H Chung
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Keelung, Taipei and Linkou, 33305, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
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33
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Lee SH, Jung JT, Lee DW, Ha CY, Park KS, Lee SH, Yang CH, Park YS, Jeon SW. [Comparison on Endoscopic Hemoclip and Hemoclip Combination Therapy in Non-variceal Upper Gastrointestinal Bleeding Patients Based on Clinical Practice Data: Is There Difference between Prospective Cohort Study and Randomized Study?]. Korean J Gastroenterol 2015; 66:85-91. [PMID: 26289241 DOI: 10.4166/kjg.2015.66.2.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND/AIMS Endoscopic hemoclip application is an effective and safe method of endoscopic hemostasis. We conducted a multicenter retrospective study on hemoclip and hemoclip combination therapy based on prospective cohort database in terms of hemostatic efficacy not in clinical trial but in real clinical practice. METHODS Data on endoscopic hemostasis for non-variceal upper gastrointestinal bleeding (NVUGIB) were prospectively collected from February 2011 to December 2013. Among 1,584 patients with NVUGIB, 186 patients treated with hemoclip were enrolled in this study. Subjects were divided into three groups: Group 1 (n = 62), hemoclipping only; group 2 (n = 88), hemoclipping plus epinephrine injection; and group 3 (n = 36), hemocliping and epinephrine injection plus other endoscopic hemostatic modalities. Primary outcomes included rebleeding, other therapeutic management, hospitalization period, fasting period and mortality. Secondary outcomes were bleeding associated mortality and overall mortality. RESULTS Active bleeding and peptic ulcer bleeding were more common in group 3 than in group 1 and in group 2 (p < 0.001). However, primary outcomes (rebleeding, other management, morbidity, hospitalization period, fasting period and mortality) and secondary outcomes (bleeding associated mortality and total mortality) were not different among groups. CONCLUSIONS Combination therapy of epinephrine injection and other modalities with hemoclips did not show advantage over hemoclipping alone in this prospective cohort study. However, there is a tendency to perform combination therapy in active bleeding which resulted in equivalent hemostatic success rate, and this reflects the role of combination therapy in clinical practice.
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Affiliation(s)
- Su Hyun Lee
- Departments of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jin Tae Jung
- Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Dong Wook Lee
- Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Chang Yoon Ha
- Gyeongsang National University School of Medicine, Jinju, Korea
| | | | - Si Hyung Lee
- Yeungnam University College of Medicine, Daegu, Korea
| | | | - Youn Sun Park
- Soonchunhyang University College of Medicine, Gumi, Korea
| | - Seong Woo Jeon
- Departments of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
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Kim ES, Song GA, Cho KB, Park KS, Kim KO, Jang BI, Kim EY, Jeon SW, Lee HS, Yang CH, Lee YK, Lee DW, Kim SK, Kim TO, Lee J, Kim HW, Jee SR, Park SJ, Kim HJ. Significant risk and associated factors of active tuberculosis infection in Korean patients with inflammatory bowel disease using anti-TNF agents. World J Gastroenterol 2015; 21:3308-3316. [PMID: 25805938 PMCID: PMC4363761 DOI: 10.3748/wjg.v21.i11.3308] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 10/29/2014] [Accepted: 12/01/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the incidence and risk factors of Korean tuberculosis (TB) infection in patients with inflammatory bowel disease (IBD) undergoing anti-TNF treatment.
METHODS: The data of IBD patients treated with anti-TNFs in 13 tertiary referral hospitals located in the southeastern region of Korea were collected retrospectively. They failed to show response or were intolerant to conventional treatments, including steroids or immunomodulators. Screening measures for latent TB infection (LTBI) and the incidence and risk factors of active TB infection after treatment with anti-TNFs were identified.
RESULTS: Overall, 376 IBD patients treated with anti-TNF agents were recruited (male 255, mean age of anti-TNF therapy 32.5 ± 13.0 years); 277 had Crohn’s disease, 99 had ulcerative colitis, 294 used infliximab, and 82 used adalimumab. Before anti-TNF treatment, screening tests for LTBI including an interferon gamma release assay or a tuberculin skin test were performed in 82.2% of patients. Thirty patients (8%) had LTBI. Sixteen cases of active TB infection including one TB-related mortality occurred during 801 person-years (PY) follow-up (1997.4 cases per 100000 PY) after anti-TNF treatment. LTBI (OR = 5.76, 95%CI: 1.57-21.20, P = 0.008) and WBC count < 5000 mm3 (OR = 4.5, 95%CI: 1.51-13.44, P = 0.007) during follow-up were identified as independently associated risk factors.
CONCLUSION: Anti-TNFs significantly increase the risk of TB infection in Korean patients with IBD. The considerable burden of TB and marked immunosuppression might be attributed to this risk.
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Chang TC, Shiah HS, Yang CH, Yeh KH, Cheng AL, Shen BN, Wang YW, Yeh CG, Chiang NJ, Chang JY, Chen LT. Phase I study of nanoliposomal irinotecan (PEP02) in advanced solid tumor patients. Cancer Chemother Pharmacol 2015; 75:579-86. [PMID: 25577133 PMCID: PMC4341010 DOI: 10.1007/s00280-014-2671-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [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: 07/08/2014] [Accepted: 12/30/2014] [Indexed: 12/18/2022]
Abstract
Purpose
To define the dose-limiting toxicity (DLT), maximum tolerated dose (MTD) and pharmacokinetics (PK) of PEP02, a novel liposome-encapsulated irinotecan, in patients with advanced refractory solid tumors. Methods Patients were enrolled in cohorts of one to three to receive escalating dose of PEP02 in a phase I trial. PEP02, from 60 to 180 mg/m2, was given as a 90-min intravenous infusion, every 3 weeks. Results A total of 11 patients were enrolled into three dose levels: 60 (one patient), 120 (six patients) and 180 mg/m2 (four patients). DLT was observed in three patients, one at 120 mg/m2 (grade 3 catheter-related infection) and two at 180 mg/m2 (grade 4 neutropenia lasting for >3 days in one, grade 4 hematological toxicities and grade 4 diarrhea in the other). MTD was determined as 120 mg/m2. Comparing with those after free-form irinotecan in the literature, the dose-normalized PK of SN-38 (the active metabolite) after PEP02 was characterized by lower Cmax, prolonged terminal half-life and higher AUC but with significant inter-individual variation. One patient who died of treatment-related toxicity had significantly higher Cmax and AUC levels of SN-38 than those of the other three patients at 180 mg/m2. Post hoc pharmacogenetic study showed that the patient had a combined heterozygosity genotype of UGT1A1*6/*28. Two patients had objective tumor response. Conclusions PEP02 apparently modified the PK parameters of irinotecan and SN-38 by liposome encapsulation. The MTD of PEP02 monotherapy at 3-week interval is 120 mg/m2, which will be the recommended dose for future studies.
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Affiliation(s)
- T C Chang
- Department of Gynecology, Linkuo Chang-Gung Memorial Hospital, No.5, Fu-Hsing Street, Kuei-shan Hsiang, Taoyuan, 33305, Taiwan
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Veldhorst M, Hwang JCC, Yang CH, Leenstra AW, de Ronde B, Dehollain JP, Muhonen JT, Hudson FE, Itoh KM, Morello A, Dzurak AS. An addressable quantum dot qubit with fault-tolerant control-fidelity. Nat Nanotechnol 2014; 9:981-985. [PMID: 25305743 DOI: 10.1038/nnano.2014.216] [Citation(s) in RCA: 199] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 08/28/2014] [Indexed: 06/04/2023]
Abstract
Exciting progress towards spin-based quantum computing has recently been made with qubits realized using nitrogen-vacancy centres in diamond and phosphorus atoms in silicon. For example, long coherence times were made possible by the presence of spin-free isotopes of carbon and silicon. However, despite promising single-atom nanotechnologies, there remain substantial challenges in coupling such qubits and addressing them individually. Conversely, lithographically defined quantum dots have an exchange coupling that can be precisely engineered, but strong coupling to noise has severely limited their dephasing times and control fidelities. Here, we combine the best aspects of both spin qubit schemes and demonstrate a gate-addressable quantum dot qubit in isotopically engineered silicon with a control fidelity of 99.6%, obtained via Clifford-based randomized benchmarking and consistent with that required for fault-tolerant quantum computing. This qubit has dephasing time T2* = 120 μs and coherence time T2 = 28 ms, both orders of magnitude larger than in other types of semiconductor qubit. By gate-voltage-tuning the electron g*-factor we can Stark shift the electron spin resonance frequency by more than 3,000 times the 2.4 kHz electron spin resonance linewidth, providing a direct route to large-scale arrays of addressable high-fidelity qubits that are compatible with existing manufacturing technologies.
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Affiliation(s)
- M Veldhorst
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J C C Hwang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - C H Yang
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - A W Leenstra
- University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - B de Ronde
- University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - J P Dehollain
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J T Muhonen
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - F E Hudson
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - K M Itoh
- School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - A Morello
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - A S Dzurak
- Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, New South Wales 2052, Australia
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Lee YJ, Kim ES, Park KS, Cho KB, Lee MY, Kim SK, Jeon SW, Jung MK, Jang BI, Kim KO, Lee SH, Kim EY, Kwon JG, Jung JT, Yang CH, Kim WJ, Kim HJ, Seo HE. Inter-observer agreement in the endoscopic classification of colorectal laterally spreading tumors: a multicenter study between experts and trainees. Dig Dis Sci 2014; 59:2550-6. [PMID: 24828919 DOI: 10.1007/s10620-014-3206-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 05/03/2014] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND AIM The risk of cancer varies with the subtype of colorectal "laterally spreading tumors" (LSTs). However, visual interpretations vary among endoscopists. The aim of this study was to evaluate inter-observer agreement and accuracy in the endoscopic classification of LST subtypes among experts and trainees. METHODS In total, 40 LST images were collected and reviewed independently by 14 gastroenterology experts and 10 trainees. All investigators recorded their findings as one of the following four categories: homogeneous, nodular mixed, flat-elevated, and pseudo-depressed. Agreement was assessed in terms of the kappa (κ) statistic and AC1 estimate. Accuracy is reported as percentage agreement with the gold standard, based on the gross morphology of the resected specimens. RESULTS Of the possible 91 pair-wise κ estimates among experts, 41 (45.1%) were >0.75, indicating excellent agreement, while only 2 (4.44%) of the 45 pair-wise κ estimates among trainees were >0.75. Agreements for individual LST subtypes in the trainee group were significantly lower than those in the expert group. The κ and AC1 estimates showed similar values in individual subtypes of LSTs. The overall accuracy of LST was also significantly higher for the experts than the trainees (85.9 vs. 72.5%, P < 0.001). Notably, the flat-elevated subtype showed the lowest agreement and accuracy and was frequently misclassified as the pseudo-depressed subtype by both groups. CONCLUSIONS Inter-observer agreement and accuracy for LST subtype classification differ significantly between experts and trainees. Implementation of an adequate training system for beginners is necessary to better identify colorectal LSTs.
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Affiliation(s)
- Yoo Jin Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keimyung University School of Medicine, 194 Dongsan-dong, Jung-gu, Daegu, 700-712, Korea
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Lim SG, Kim JH, Lee KM, Shin SJ, Kim CG, Kim KH, Kim HG, Yang CH. Conformable covered versus uncovered self-expandable metallic stents for palliation of malignant gastroduodenal obstruction: a randomized prospective study. Dig Liver Dis 2014; 46:603-8. [PMID: 24675035 DOI: 10.1016/j.dld.2014.02.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 02/25/2014] [Accepted: 02/26/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND A conformable self-expandable metallic stent was developed to overcome the limitation of previous self-expandable metallic stents. The aim of this study was to evaluate outcomes after placement of conformable covered and uncovered self-expandable metallic stents for palliation of malignant gastroduodenal obstruction. METHODS A single-blind, randomized, parallel-group, prospective study were conducted in 4 medical centres between March 2009 and July 2012. 134 patients with unresectable malignant gastroduodenal obstruction were assigned to a covered double-layered (n=66) or uncovered unfixed-cell braided (n=68) stent placement group. Primary analysis was performed to compare re-intervention rates between two groups. RESULTS 120 patients were analysed (59 in the covered group and 61 in the uncovered group). Overall rates of re-intervention were not significantly different between the two groups: 13/59 (22.0%) in the covered group vs. 13/61 (21.3%) in the uncovered group, p=0.999. Stent migration was more frequent in the covered group than in the uncovered group (p=0.003). The tumour ingrowth rate was higher in the uncovered group than in the covered group (p=0.016). CONCLUSIONS The rates of re-intervention did not significantly differ between the two stents. Conformable covered double-layered and uncovered unfixed-cell braided stents were associated with different patterns of stent malfunction.
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Affiliation(s)
- Sun Gyo Lim
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jin Hong Kim
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Republic of Korea.
| | - Kee Myung Lee
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Sung Jae Shin
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Chan Gyoo Kim
- Department of Gastroenterology, National Cancer Center, Goyang, Republic of Korea
| | - Kyung Ho Kim
- Department of Internal Medicine, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Ho Gak Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Republic of Korea
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Kim ES, Cho KB, Park KS, Jang BI, Kim KO, Jeon SW, Kim EY, Yang CH, Kim WJ. Prevalence of hepatitis-B viral markers in patients with inflammatory bowel disease in a hepatitis-B-endemic area: inadequate protective antibody levels in young patients. J Clin Gastroenterol 2014; 48:553-8. [PMID: 24162170 DOI: 10.1097/01.mcg.0000436435.75392.23] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 12/17/2022]
Abstract
BACKGROUND There are few data regarding the prevalence of hepatitis-B virus (HBV) markers in inflammatory bowel disease (IBD) patients in Korea, which is a hepatitis-B-endemic area. The aim of this study was to assess the prevalence of HBV markers in IBD patients in comparison with controls. METHODS We enrolled 513 IBD patients [241 Crohn's disease (CD) and 272 ulcerative colitis (UC)] whose hepatitis-B surface antigen and anti-HBs levels were evaluated. Anti-HBc was assayed in 357 patients. These markers were compared with those of 1020 sex-matched and age-matched controls. RESULTS Prevalence of hepatitis-B surface antigen in IBD patients was 3.7% and there was no significant difference between groups (CD 4.1%, UC 3.3%, control 4.4%, P=0.713). The frequency of effective vaccination against HBV (positive anti-HBs, without anti-HBc) was lower in IBD patients less than 30 years old compared with the same-aged controls (CD 43.3%, UC 48.5%, control 61.9%, P=0.002), whereas there was no difference between groups in subjects more than 30 years old. One third of IBD patients were at risk of susceptibility to HBV infection (nonimmune), particularly those less than 30 years old, compared with controls of the same age (CD 43.3%, UC 36.4%, control 21%, P<0.001). In IBD patients, multivariate analysis identified that age less than 30 years was an independent risk factor for nonimmune status. CONCLUSIONS IBD was not a risk factor for HBV infection even in endemic areas. However, many young IBD patients were susceptible to HBV infection. It is crucial to screen for HBV immunity and to implement a meticulous vaccination strategy for young Korean IBD patients.
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Affiliation(s)
- Eun Soo Kim
- *Department of Internal Medicine, Division of Gastroenterology, School of Medicine, Keimyung University †Department of Internal Medicine, Division of Gastroenterology and Hepatology, College of Medicine, Yeungnam University ‡Department of Internal Medicine, Division of Gastroenterology and Hepatology, School of Medicine, Kyungpook National University §Department of Internal Medicine, Division of Gastroenterology and Hepatology, School of Medicine, Catholic University of Daegu, Daegu ∥Department of Internal Medicine, Division of Gastroenterology and Hepatology, School of Medicine, Dongguk University, Gyeongju ¶Department of Internal Medicine, Division of Gastroenterology, School of Medicine, Soonchunhyang University, Gumi, Gyeongsang-buk-do, Korea
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Cheung DY, Lee YK, Yang CH. Status and literature review of self-expandable metallic stents for malignant colorectal obstruction. Clin Endosc 2014; 47:65-73. [PMID: 24570885 PMCID: PMC3928494 DOI: 10.5946/ce.2014.47.1.65] [Citation(s) in RCA: 8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/18/2013] [Accepted: 07/18/2013] [Indexed: 12/14/2022] Open
Abstract
Use of colorectal stents has increased dramatically over the last decades. Colorectal stents offer an alternative way to relieve fatal intestinal obstruction and can take place of emergency surgery, which associated with significant morbidity and mortality and a high incidence of stoma creation, to elective resection. Although there remain a few concerns regarding the use of stents as a bridge to surgical resection, use of self-expandable metallic stents for palliation in patients with unresectable disease has come to be generally accepted. Advantages of colorectal stents include acute restoration of luminal patency and allowance of time for proper staging and surgical optimization, and the well-known disadvantages are procedure-related complications including perforation, migration, and stent failure. General indications, procedures, and clinical outcomes as well as recent evidences regarding the use of colorectal stents will be discussed in this review.
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Affiliation(s)
- Dae Young Cheung
- Department of Internal Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Yong Kook Lee
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
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Affiliation(s)
- Jeong Bae Park
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
| | - Yong Kook Lee
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, Korea
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Jung YS, Lee SH, Park CS, Oh MJ, Kim KO, Jang BI, Jeon SW, Jung MK, Park KS, Kim ES, Cho KB, Jung JT, Kwon JG, Kim EY, Kim WJ, Yang CH. Trends in the Eradication Rates ofHelicobacter pyloriInfection in Daegu and Gyeongsangbuk-do, Korea: Multicenter Study over 13 Years. Korean J Gastroenterol 2014; 63:82-9. [DOI: 10.4166/kjg.2014.63.2.82] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yeoun Su Jung
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Si Hyung Lee
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Chan Seo Park
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Myung Jin Oh
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Min Kyu Jung
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University College of Medicine, Daegu, Korea
| | - Eun Soo Kim
- Department of Internal Medicine, Keimyung University College of Medicine, Daegu, Korea
| | - Kwang Bum Cho
- Department of Internal Medicine, Keimyung University College of Medicine, Daegu, Korea
| | - Jin Tae Jung
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Joong Goo Kwon
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Wan Jung Kim
- Department of Internal Medicine, Soonchunhyang University Gumi Hospital, Soonchunhyang University College of Medicine, Gumi, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Gyeongju, Korea
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Lee SH, Jang BI, Kim KO, Jeon SW, Kwon JG, Kim EY, Jung JT, Park KS, Cho KB, Kim ES, Park CG, Yang CH. Endoscopic experience improves interobserver agreement in the grading of esophagitis by Los Angeles classification: conventional endoscopy and optimal band image system. Gut Liver 2013; 8:154-9. [PMID: 24672656 PMCID: PMC3964265 DOI: 10.5009/gnl.2014.8.2.154] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 03/25/2013] [Accepted: 04/19/2013] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Interobserver variation by experience was documented for the diagnosis of esophagitis using the Los Angeles classification. The aim of this study was to evaluate whether interobserver agreement can be improved by higher levels of endoscopic experience in the diagnosis of erosive esophagitis. Methods Endoscopic images of 51 patients with gastroesophageal reflux disease (GERD) symptoms were obtained with conventional endoscopy and optimal band imaging (OBI). Endoscopists were divided into an expert group (16 gastroenterologic endoscopic specialists guaranteed by the Korean Society of Gastrointestinal Endoscopy) and a trainee group (individuals with fellowships, first year of specialty training in gastroenterology). All endoscopists had no or minimal experience with OBI. GERD was diagnosed using the Los Angeles classification with or without OBI. Results The mean weighted paired κ statistics for interobserver agreement in grading erosive esophagitis by conventional endoscopy in the expert group was better than that in the trainee group (0.51 vs 0.42, p<0.05). The mean weighted paired k statistics in the expert group and in the trainee group based on conventional endoscopy with OBI did not differ (0.42, 0.42). Conclusions Interobserver agreement in the expert group using conventional endoscopy was better than that in the trainee group. Endoscopic experience can improve the interobserver agreement in the grading of esophagitis using the Los Angeles classification.
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Affiliation(s)
- Si Hyung Lee
- Department of Internal Medicine, Yeungnam University School of Medicine, Daegu, Korea
| | - Byung Ik Jang
- Department of Internal Medicine, Yeungnam University School of Medicine, Daegu, Korea
| | - Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University School of Medicine, Daegu, Korea
| | - Seong Woo Jeon
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Joong Goo Kwon
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Jin Tae Jung
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Kwnag Bum Cho
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Eun Soo Kim
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Chang Geun Park
- Department of Internal Medicine, Daegu Fatima Hospital, Daegu, Korea
| | - Chang Heon Yang
- Department of Internal Medicine, Dongguk University School of Medicine, Daegu, Korea
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Li YX, Wang XG, Yang CH, Cong LL, Wu FF, Xue JG, Han YH. Identification of a locus characteristic of male individuals of buffalo grass [Buchloe dactyloides (Nutt.) Engelm.] by using an RAPD marker. Genet Mol Res 2013; 12:4070-7. [PMID: 24089096 DOI: 10.4238/2013.september.27.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Buffalo grass [Buchloe dactyloides (Nutt.) Engelm.] plants can be either male, female, or hermaphrodite (monoecious). As there is no morphological difference in the early vegetative growth of these three classes of plants, it is worthwhile to use molecular biological methods to attempt to identify the sex of a plant at this early growth period. In this study, we identified 23 plants that had a stable sex for over at least 3 years. Of these, 9 were male plants, 10 were female plants, and 4 were hermaphrodites. Screening of 300 RAPD primers identified a primer, namely S211 (5'-ttccccgcga-3'), which is capable of identifying male plants. The specific fragment was cloned, sequenced, and submitted to the GenBank database (accession No. JN982469). When used to identify the sex of 188 plants during their first growing season, the S211 primer correctly identified 85.8% of all male plants. Our results showed that the S211 primer can identify the male, and in doing so, it facilitates buffalo grass breeding work.
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Affiliation(s)
- Y X Li
- Department of Grassland Science, China Agricultural University, Beijing, China
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Tsai ML, Wu CT, Lin TF, Lin WC, Huang YC, Yang CH. Chemical Composition and Biological Properties of Essential Oils of Two Mint Species. TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i4.20] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Lee KJ, Kim SW, Kim TI, Lee JH, Lee BI, Keum B, Cheung DY, Yang CH. Evidence-based recommendations on colorectal stenting: a report from the stent study group of the korean society of gastrointestinal endoscopy. Clin Endosc 2013; 46:355-67. [PMID: 23964332 PMCID: PMC3746140 DOI: 10.5946/ce.2013.46.4.355] [Citation(s) in RCA: 11] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 10/13/2012] [Accepted: 10/29/2012] [Indexed: 12/11/2022] Open
Abstract
Recently, placement of self-expandable metallic stents has been used for the treatment of colorectal obstruction. As domestic awareness of colorectal cancer has increased, the number of colorectal stenting procedures performed has also increased. We aimed to provide evidence-based recommendations for colorectal stenting to aid gastroenterologists in making informed decisions regarding the management of patients who present with colorectal obstruction. The working group consisted of eight gastroenterologists who actively practice and conduct research in the field of colorectal stenting and are the members of the Stent Study Group of the Korean Society of Gastrointestinal Endoscopy. A literature search was conducted using the PubMed, Embase, KoreaMed, and the Cochrane Library databases to identify relevant articles published between January 2001 and June 2012. Based on the modified Delphi process, 10 recommendation statements regarding indications, usefulness, methodology and complications of colorectal stenting, and alternative treatments for malignant colorectal obstruction were determined. The contents will be widely distributed, and periodically revised to reflect the latest knowledge. These evidence-based recommendations for colorectal stenting will provide gastroenterologists and patients with appropriate and balanced information, and will improve the quality of care.
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Affiliation(s)
- Kwang Jae Lee
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013. [DOI: 10.2807/ese.18.20.20479-en] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
| | - W C Chen
- Centers for Disease Control, Taipei, Taiwan
| | - W T Huang
- Centers for Disease Control, Taipei, Taiwan
| | - Y C Lin
- Centers for Disease Control, Taipei, Taiwan
| | - M C Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H W Kuo
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chuang
- Centers for Disease Control, Taipei, Taiwan
| | - J R Yang
- Centers for Disease Control, Taipei, Taiwan
| | - M T Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H S Wu
- Centers for Disease Control, Taipei, Taiwan
| | - C H Yang
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chou
- Centers for Disease Control, Taipei, Taiwan
| | - F Y Chang
- Centers for Disease Control, Taipei, Taiwan
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013; 18:20479. [PMID: 23725865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
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Yang CH, Cho M. Hepatitis B virus X gene differentially modulates cell cycle progression and apoptotic protein expression in hepatocyte versus hepatoma cell lines. J Viral Hepat 2013; 20:50-8. [PMID: 23231084 DOI: 10.1111/j.1365-2893.2012.01625.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The hepatitis B virus (HBV) X gene, which encodes the hepatitis B virus x protein (HBx), is essential for viral infection and genome replication, virus-associated liver disease, and development of hepatocellular carcinoma. However, the exact role(s) of HBx remain controversial. In this study, we focus on studying the role of HBx in the regulation of cell cycle and apoptosis in normal liver and hepatoma cell lines. We established the Huh7-X and Chang-X cell lines that constitutively express HBx. There were differences between the two cell lines in terms of cell cycle regulation and expression of p27 and transforming growth factor-β. Expression of HBx proteins dramatically increases expression of Bcl-2 and reduces levels of cleaved PARP protein in Chang-X cells, and it inhibits apoptosis under unfavourable conditions, such as serum starvation, in both cell lines. Our findings provide clues about the intracellular roles of HBx and demonstrate that expression of this protein is important for multiple cellular processes, that is, cell cycle progression and apoptosis, in hepatoma cells and normal liver cell lines.
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Affiliation(s)
- C H Yang
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju, Korea
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Cheung DY, Kim JY, Hong SP, Jung MK, Ye BD, Kim SG, Kim JH, Lee KM, Kim KH, Baik GH, Kim HG, Eun CS, Kim TI, Kim SW, Kim CD, Yang CH. Outcome and safety of self-expandable metallic stents for malignant colon obstruction: a Korean multicenter randomized prospective study. Surg Endosc 2012; 26:3106-13. [PMID: 22609981 DOI: 10.1007/s00464-012-2300-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 04/02/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND Newly developed uncovered stents are designed to have varied radial force and high conformability to improve clinical outcome and safety. This study aimed to determine and compare the clinical outcome and safety of the Taewoong D-type uncovered stent and the Boston Scientific Wallfex stent. METHODS Patients with acute malignant colonic obstruction were treated with a colonic stent. For the purpose of palliation, patients were randomly allocated. For the purpose of bridging, the type of stent was determined by the discretion of the individual doctors. Technical and clinical success and complication occurrence were measured as primary outcomes. RESULTS From 12 university hospitals, 123 patients with malignant colonic obstruction were enrolled. Of these 123 patients, 58 were treated with colonic stents for palliative purposes. The technical and clinical success rate was 100 % for both stents in the palliative group. Perforation occurred for one patient (3.6 %) in the Wallflex stent group (n = 28) on day 5 and for no patients in the D-type stent group (n = 30). Two cases of migration occurred: one with the Wallflex stent and one with the D-type stent. Stent restenosis occurred for one patient with the Wallflex stent. Preoperative bridging stents were placed in 65 patients. The median time to surgery was 10 days. The technical success rate was 93.4 %, and clinical success was achieved for 86.2 % of the patients. Perforation occurred for five patients: four with the Wallflex stent and one with the D-type stent. The efficacy and safety of the two stents did not differ statistically. CONCLUSIONS The D-type colonic uncovered stent and the Wallflex colonic uncovered stent are effective and safe for both palliative and preoperative bridging therapy used to treat acute malignant colonic obstruction.
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Affiliation(s)
- Dae Young Cheung
- The Catholic University of Korea College of Medicine, Seoul, Korea.
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