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Parks DF, Voitiuk K, Geng J, Elliott MAT, Keefe MG, Jung EA, Robbins A, Baudin PV, Ly VT, Hawthorne N, Yong D, Sanso SE, Rezaee N, Sevetson JL, Seiler ST, Currie R, Pollen AA, Hengen KB, Nowakowski TJ, Mostajo-Radji MA, Salama SR, Teodorescu M, Haussler D. IoT cloud laboratory: Internet of Things architecture for cellular biology. Internet Things (Amst) 2022; 20:100618. [PMID: 37383277 PMCID: PMC10305744 DOI: 10.1016/j.iot.2022.100618] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
The Internet of Things (IoT) provides a simple framework to control online devices easily. IoT is now a commonplace tool used by technology companies but is rarely used in biology experiments. IoT can benefit cloud biology research through alarm notifications, automation, and the real-time monitoring of experiments. We developed an IoT architecture to control biological devices and implemented it in lab experiments. Lab devices for electrophysiology, microscopy, and microfluidics were created from the ground up to be part of a unified IoT architecture. The system allows each device to be monitored and controlled from an online web tool. We present our IoT architecture so other labs can replicate it for their own experiments.
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Affiliation(s)
- David F Parks
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Kateryna Voitiuk
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Jinghui Geng
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Matthew A T Elliott
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Matthew G Keefe
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA
| | - Erik A Jung
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Ash Robbins
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Pierre V Baudin
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Victoria T Ly
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Nico Hawthorne
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Dylan Yong
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Sebastian E Sanso
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
| | - Nick Rezaee
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
| | - Jess L Sevetson
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Spencer T Seiler
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Rob Currie
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
| | - Alex A Pollen
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA
- Department of Neurology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Keith B Hengen
- Department of Biology, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Tomasz J Nowakowski
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA
| | - Mohammed A Mostajo-Radji
- UC Santa Cruz Genomics Institute, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Sofie R Salama
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
- UC Santa Cruz Genomics Institute, University of California Santa Cruz, Santa Cruz, CA 95064, USA
| | - Mircea Teodorescu
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
| | - David Haussler
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, USA
- UC Santa Cruz Genomics Institute, University of California Santa Cruz, Santa Cruz, CA 95064, USA
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
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Chelvam SP, Lee E, Huang J, Wu Y, Abdul Rahim AB, Ram R, Yong D, Springs S. Process Development and Manufacturing: ANOMALY DETECTION FOR MICROBIAL CONTAMINATION IN MESENCHYMAL STROMAL CELL CULTURE. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00112-8] [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: 11/28/2022]
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3
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Yong D, Sulong MA, Sundarajoo M, Am Haris N, Low MY, Kaniappan K, Nuruddin AA. Impact of SARS-CoV2 pandemic onto acute ST-elevation myocardial infarction care and patient outcomes in a large tertiary cardiac center. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
SARS-CoV2 pandemic has caused major impact on patient care worldwide. We experienced a surge of cases beginning March 2020 leading to the government imposing a movement control order, more commonly known as ‘lockdown’ starting 18th March 2020. As such, various changes were implemented by our center to the clinical pathway for STEMI patients including using thrombolysis as the preferred initial treatment modality.
Purpose
We aim to determine the impact of SARS-CoV2 pandemic on the clinical outcome of acute STEMI patients in our center which is a large regional tertiary hospital for cardiology.
Methods and results: This is a single center retrospective cross-sectional study from 1st January 2020 until 31st May 2020. We compared clinical outcomes of patients admitted for acute STEMI before (group 1) and after (group 2) 15th March 2020 which is the date our center implemented changes to our STEMI care pathway. A total of 172 cases of acute STEMI was admitted to our center during this period. Admission for STEMI was noticeably lower after the lockdown implementation (group 1, n = 97 vs group 2, n = 75). The median time from symptom to presentation at our center did not differ between the two groups being 4.15h[2.78,7.28] vs 4.42h[2.97,8.01] p = 0.702, suggesting no out-of-hospital delays in management. Majority of the patients in group 1 (n = 75, 77.2%) received primary percutaneous coronary intervention (PCI) vs only 17 (22.7%) in group 2. Most in group 2 (n = 54, 72%) received thrombolytic therapy and subsequently underwent coronary intervention within the same admission. This shows a shift in the preferred initial treatment modality for STEMI at our center during this period. The door to balloon time for patients undergoing primary PCI during this period was also numerically higher in group 2 but the difference was not statistically significant at 46min [38,63] vs 59min [45,72], p = 0.063, most likely due to the additional preparation needed in terms of SARS-CoV2 testing and personal protective equipment (PPE) prior to the procedure. The primary composite endpoint of in-hospital mortality and cardiogenic shock between the two groups (17.5% vs 24.3%, p = 0.275) did not show any significant difference. The incidence of in-hospital mortality and cardiogenic shock were 4.1% vs 6.7% (p = 0.458) and 15.5% vs 21.9% (p = 0.281) respectively.
Conclusions
This study suggests that thrombolysis as the preferred initial treatment modality for STEMI could be a reasonable temporary measure during the initial phase of a global pandemic to reduce infection risk of healthcare providers without compromising patient outcomes until adequate PPE and testing modalities are available for primary PCI to be performed safely. A follow-up study is needed to determine the long-term outcome of these patients.
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Affiliation(s)
- D Yong
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - M A Sulong
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - M Sundarajoo
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - N Am Haris
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - M Y Low
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - K Kaniappan
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
| | - A A Nuruddin
- Institut Jantung Negara, Cardiology, Kuala Lumpur, Malaysia
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Yong D, Tey Y, Thum C, Sundarajoo M, Kaniappan K, Quah W, Shaparudin A, Palaniappan G, Nuruddin AA. DE-NOVO proximal left anterior descending lesions treated with drug-eluting balloon – a single centre registry. Int J Cardiol 2021. [DOI: 10.1016/j.ijcard.2021.10.131] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Yong D, Cathro P. Conservative pulp therapy in the management of reversible and irreversible pulpitis. Aust Dent J 2021; 66 Suppl 1:S4-S14. [PMID: 33818812 DOI: 10.1111/adj.12841] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/05/2021] [Accepted: 03/30/2021] [Indexed: 11/26/2022]
Abstract
Conservative pulp therapy is an alternative treatment option to tooth removal and root canal treatment in the management of deep caries, traumatic pulp exposures and developmental anomalies. Pulp tissue preservation can extend the long-term survival of teeth through relatively simple restorative procedures. This article aims to update clinicians on the current state of research in materials, techniques and outcomes of vital pulp therapies and provide practical guidelines for their implementation into daily practice.
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Affiliation(s)
- D Yong
- Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago Dental School, Dunedin, New Zealand
| | - P Cathro
- Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago Dental School, Dunedin, New Zealand
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Yong D, Rahim AA, Wei B, Wu Y, Thwin C, Chen S, Naing MW. Label-free spectroscopy for cell monitoring. Cytotherapy 2019. [DOI: 10.1016/j.jcyt.2019.04.031] [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: 11/29/2022]
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7
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Lee KH, Han SH, Yong D, Paik HC, Lee JG, Kim MS, Joo DJ, Choi JS, Kim SI, Kim YS, Park MS, Kim SY, Yoon YN, Kang S, Jeong SJ, Choi JY, Song YG, Kim JM. Acquisition of Carbapenemase-Producing Enterobacteriaceae in Solid Organ Transplantation Recipients. Transplant Proc 2019; 50:3748-3755. [PMID: 30577266 DOI: 10.1016/j.transproceed.2018.01.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/23/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Carbapenemase-producing Enterobacteriaceae (CPE) can lead to life-threatening outcomes with rapid spread of the carbapenemase gene in solid organ transplantation (SOT) recipients because of limitations of available antibiotics. We examined the characteristics and importance of CPE acquisition in SOT recipients with large numbers of CPE isolates. METHODS Between November 2015 and October 2016, 584 CPE isolates were found in 37 recipients and verified by carbapenemase gene multiplex polymerase chain reaction (PCR). One hundred recipients with at least 2 negative results in carbapenemase PCR for stool surveillance and no CPE isolates in clinical samples were retrospectively included. RESULTS Most CPE isolates were Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae (546, 93.5%). The most frequent transplantation organ was lung (43.3%), and the most common sample with CPE isolates other than stool was respiratory tract (22.6%). The median time between SOT and first CPE acquisition was 7 days. All-cause mortality was significantly higher in recipients with CPE than in those without CPE (24.3% vs 10.0%; P = .03). In multivariate regression analysis, stool colonization of vancomycin-resistant Enterococci and/or Clostridium difficile during 30 days before SOT (odds ratio [OR], 3.28; 95% CI, 1.24-8.68; P = .02), lung transplantation (OR, 4.50; 95% CI, 1.19-17.03; P = .03), and intensive care unit stay ≥2 weeks (OR, 6.21; 95% CI, 1.72-22.45; P = .005) were associated with acquisition of CPE. CONCLUSIONS Early posttransplantation CPE acquisition may affect the clinical outcome of SOT recipients. Careful screening for CPE during the early posttransplantation period would be meaningful in recipients with risk factors.
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Affiliation(s)
- K H Lee
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Han
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - D Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H C Paik
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J G Lee
- Department of Thoracic and Cardiovascular Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - D J Joo
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J S Choi
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S I Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Transplantation Surgery and Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Park
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Y Kim
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Institute of Chest Diseases, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y N Yoon
- Department of Cardiothoracic Surgery, Cardiovascular Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S Kang
- Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S J Jeong
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J Y Choi
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y G Song
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - J M Kim
- Division of Infectious Disease, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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8
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Sabesan VJ, Whaley JD, LaVelle M, Petersen-Fitts G, Lombardo D, Yong D, Malone D, Khan J, Lima DJL. Relationship between hospital size and teaching status on outcomes for reverse shoulder arthroplasty. Musculoskelet Surg 2019; 104:37-42. [PMID: 30600437 DOI: 10.1007/s12306-018-0584-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 12/09/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND The use of reverse shoulder arthroplasty (RSA) continues to grow with expanding indications and increased surgeon awareness. Previous data for other lower extremity joint replacements indicate that high-volume centers have better outcomes, with lower complication rates, decreased length of stay, and complications for both hemiarthroplasty and total shoulder arthroplasty. The purpose of this study is to evaluate the effects of hospital size and setting on adverse events for RSA. MATERIALS AND METHODS The National Inpatient Sample database was queried for RSA performed using ICD-9 codes. Primary outcomes included length of stay (LOS), total hospital charges, discharge disposition, and postoperative complications. Odds ratios were used to assess the risk of inpatient postoperative complications. RESULTS A weighted national estimate of 24,056 discharges for patients undergoing RSA was included in the study. Patients at larger hospitals experienced higher total charges, increased average LOS, and slightly higher complication rates compared to those of small and medium hospitals. Patients in larger hospitals had significantly increased rates of genitourinary and central nervous system complications, while patients in small/medium hospitals experienced higher rates of hematoma/seroma. CONCLUSION Results from this study indicate that large and non-teaching hospitals overall tend to burden the patients with higher hospital charges, longer hospital stay, and more frequent non-routine discharges. Also, larger hospitals are associated with higher risk of genitourinary and central nervous system complications rates, whereas non-teaching hospitals are associated with lower risk of infection and higher risk of anemia after RSA. With the growth in RSA in the USA, continued attention needs to be placed on improving outcomes and resource utilization for RSA patients even in larger hospitals.
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Affiliation(s)
- V J Sabesan
- Department of Orthopaedic Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA.
| | - J D Whaley
- Department of Orthopaedic Surgery, Wayne State University School of Medicine, Taylor, MI, USA
| | - M LaVelle
- Department of Orthopaedic Surgery, Wayne State University School of Medicine, Taylor, MI, USA
| | - G Petersen-Fitts
- Department of Orthopaedic Surgery, Beaumont Health, Taylor, MI, USA
| | - D Lombardo
- Department of Orthopaedic Surgery, Beaumont Health, Taylor, MI, USA
| | - D Yong
- Department of Orthopaedic Surgery, Wayne State University School of Medicine, Taylor, MI, USA
| | - D Malone
- Department of Orthopaedic Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
| | - J Khan
- Department of Orthopaedic Surgery, Beaumont Health, Taylor, MI, USA
| | - D J L Lima
- Department of Orthopaedic Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd, Weston, FL, 33331, USA
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Xue-Hua N, Hai-Yong H, Wen-Jian G, Ye H, Lu Y, Yong D, Wei C. [Effectiveness of clinical pathway for treatment of advanced schistosomiasis hepatic fibrosis]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2018; 29:475-477. [PMID: 29508584 DOI: 10.16250/j.32.1374.2016272] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Objective To assess the effectiveness of the clinical pathway for the treatment of advanced schistosomiasis hepatic fibrosis. Methods The duration of hospital stay, gross hospitalization expense, individual-paid expense, interior diameter of portal vein, levels of four serum hepatic fibrosis-related parameters (PIIIP, CIV, HA, and LN), and activities of ALT, AST and γ-GT were assessed and compared between the advanced schistosomiasis patients receiving the clinical pathway and ones receiving non-clinical pathway. Results There were 142 advanced schistosomiasis patients with hepatic fibrosis receiving the clinical pathway of anti-hepatic fibrosis. Compared with the patients receiving non-clinical pathway, the gross hospitalization expenses reduced by 11.2% (t = 6.310, P < 0.05), and the individual-paid expenses reduced by 16.1% (t = 4.326, P < 0.05). The mean HA level was twice higher than the normal range, with a positive rising from 70.4% to 83.1%, and the abnormal rates of CIV and γ-GT were 64.1% and 28.9% respectively. Conclusions The clinical pathway can drastically reduce the treatment expenses in advanced schistosomiasis patients with hepatic fibrosis. However, the patients have a trend towards the persistent disease progression. Therefore, the researches of more effective therapeutic methods for advanced schistosomiasis hepatic fibrosis are urgently needed.
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Affiliation(s)
- N Xue-Hua
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
| | - H Hai-Yong
- Jiangsu Institute of Parasitic Diseases, China
| | - G Wen-Jian
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
| | - H Ye
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
| | - Y Lu
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
| | - D Yong
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
| | - C Wei
- Third People's Hospital of Kunshan, Jiangsu Province, Kunshan 215316, China
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10
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Kim JY, Yi MH, Hwang Y, Lee JY, Lee IY, Yong D, Yong TS. 16S rRNA profiling of the Dermatophagoides farinae
core microbiome: Enterococcus
and Bartonella. Clin Exp Allergy 2018; 48:607-610. [DOI: 10.1111/cea.13104] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- J. Y. Kim
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
| | - M.-H. Yi
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
| | - Y. Hwang
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance; Yonsei University College of Medicine; Seoul Korea
| | - J. Y. Lee
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
- Brain Korea 21 PLUS Project for Medical Science; Yonsei University College of Medicine; Seoul Korea
| | - I.-Y. Lee
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
| | - D. Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance; Yonsei University College of Medicine; Seoul Korea
| | - T.-S. Yong
- Department of Environmental Medical Biology; Institute of Tropical Medicine, and Arthropods of Medical Importance Resource Bank; Yonsei University College of Medicine; Seoul Korea
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11
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Jeon J, D'Souza R, Pinto N, Ryu C, Park J, Yong D, Lee K. Characterization and complete genome sequence analysis of two
Myoviral
bacteriophages infecting clinical carbapenem‐resistant
Acinetobacter baumannii
isolates. J Appl Microbiol 2016; 121:68-77. [DOI: 10.1111/jam.13134] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/16/2016] [Accepted: 03/03/2016] [Indexed: 12/25/2022]
Affiliation(s)
- J. Jeon
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance Yonsei University College of Medicine Seoul Korea
| | - R. D'Souza
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance Yonsei University College of Medicine Seoul Korea
| | - N. Pinto
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance Yonsei University College of Medicine Seoul Korea
| | - C.‐M. Ryu
- Molecular Phytobacteriology Laboratory KRIBB Daejeon Korea
- Biosystems and Bioengineering Program School of Science University of Science and Technology (UST) Daejeon Korea
| | - J. Park
- Laboratory Animal Medicine College of Veterinary Medicine Chonnam National University Gwang‐ju Korea
| | - D. Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance Yonsei University College of Medicine Seoul Korea
| | - K. Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance Yonsei University College of Medicine Seoul Korea
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12
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Howes LM, Casey AR, Asplund M, Keller SC, Yong D, Nataf DM, Poleski R, Lind K, Kobayashi C, Owen CI, Ness M, Bessell MS, Da Costa GS, Schmidt BP, Tisserand P, Udalski A, Szymański MK, Soszyński I, Pietrzyński G, Ulaczyk K, Wyrzykowski Ł, Pietrukowicz P, Skowron J, Kozłowski S, Mróz P. Extremely metal-poor stars from the cosmic dawn in the bulge of the Milky Way. Nature 2015; 527:484-7. [PMID: 26560034 DOI: 10.1038/nature15747] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 08/24/2015] [Indexed: 11/09/2022]
Abstract
The first stars are predicted to have formed within 200 million years after the Big Bang, initiating the cosmic dawn. A true first star has not yet been discovered, although stars with tiny amounts of elements heavier than helium ('metals') have been found in the outer regions ('halo') of the Milky Way. The first stars and their immediate successors should, however, preferentially be found today in the central regions ('bulges') of galaxies, because they formed in the largest over-densities that grew gravitationally with time. The Milky Way bulge underwent a rapid chemical enrichment during the first 1-2 billion years, leading to a dearth of early, metal-poor stars. Here we report observations of extremely metal-poor stars in the Milky Way bulge, including one star with an iron abundance about 10,000 times lower than the solar value without noticeable carbon enhancement. We confirm that most of the metal-poor bulge stars are on tight orbits around the Galactic Centre, rather than being halo stars passing through the bulge, as expected for stars formed at redshifts greater than 15. Their chemical compositions are in general similar to typical halo stars of the same metallicity although intriguing differences exist, including lower abundances of carbon.
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Affiliation(s)
- L M Howes
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - A R Casey
- Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
| | - M Asplund
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - S C Keller
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - D Yong
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - D M Nataf
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - R Poleski
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland.,Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, Ohio 43210, USA
| | - K Lind
- Department of Physics and Astronomy, Division of Astronomy and Space Physics, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - C Kobayashi
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia.,School of Physics, Astronomy and Mathematics, Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
| | - C I Owen
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - M Ness
- Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
| | - M S Bessell
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - G S Da Costa
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - B P Schmidt
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia
| | - P Tisserand
- Research School of Astronomy and Astrophysics, Australian National University, Australian Capital Territory 2601, Australia.,Sorbonne Universités, UPMC Université Paris 6 et CNRS, UMR 7095, Institut d'Astrophysique de Paris, 98 bis Boulevard Arago, 75014 Paris, France
| | - A Udalski
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - M K Szymański
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - I Soszyński
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - G Pietrzyński
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland.,Universidad de Concepción, Departamento de Astronomia, Casilla 160-C, Concepción, Chile
| | - K Ulaczyk
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland.,Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Ł Wyrzykowski
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - P Pietrukowicz
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - J Skowron
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - S Kozłowski
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
| | - P Mróz
- Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa, Poland
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Keller SC, Bessell MS, Frebel A, Casey AR, Asplund M, Jacobson HR, Lind K, Norris JE, Yong D, Heger A, Magic Z, Da Costa GS, Schmidt BP, Tisserand P. A single low-energy, iron-poor supernova as the source of metals in the star SMSS J031300.36−670839.3. Nature 2014; 506:463-6. [DOI: 10.1038/nature12990] [Citation(s) in RCA: 247] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 12/05/2013] [Indexed: 11/09/2022]
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Yi H, Chun J, Yong D, Lee K. P156 Metagenomic analysis of upper respiratory tract microbiome in Korean health-care workers, community people and pneumonia patients. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70399-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yim JS, Lee Y, Kim M, Seo Y, Kim W, Yong D, Jeong S, Lee K, Chong Y. P71 Antimicrobial resistance patterns for clinical isolates of Bacteroides fragilis group organisms isolated in 2009–2012 at a Korean hospital. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70316-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bonani M, Brockmann J, Cohen CD, Fehr T, Nocito A, Schiesser M, Serra AL, Blum M, Struker M, Frey DF, Wuthrich RP, Kim YW, Park SJ, Kim TH, Kim YH, Kang SW, Webb L, Casula A, Tomson C, Ben-Shlomo Y, Webb L, Casula A, Ben-Shlomo Y, Tomson C, Mansour H, Akl A, Wafa E, El Shahawy M, Palma R, Swaminathan S, Irish AB, Kolonko A, Chudek J, Wiecek A, Vanrenterghem Y, Kuypers D, Katrien DV, Evenepoel P, Claes K, Bammens B, Meijers B, Naesens M, Kolonko A, Chudek J, Wiecek A, Lo S, Chan CK, Yong D, Wong PN, Kwan TH, Cheng YL, Fung KS, Choy BY, Chau KF, Leung CB, Ebben J, Liu J, Chen SC, Collins A, Ho YW, Abelli M, Ferrario DI Torvajana A, Ticozzelli E, Maiga B, Ferrario DI Torvajana A, Patane A, Albrizio P, Gregorini M, Libetta C, Rampino T, Albrizio P, Geraci P, Dal Canton A, Rotter MT, Jacobi J, Pressmar K, Amann K, Eckardt KU, Weidemann A, Muller K, Stein M, Diezemann C, Sefrin A, Babel N, Reinke P, Schachtner T, Costa C, Touscoz GA, Sidoti F, Sinesi F, Mantovani S, Simeone S, Balloco C, Piasentin Alessio E, Messina M, Segoloni G, Cavallo R, Sharma R.K, Kaul DA, Gupta RK, Gupta A, Prasad N, Bhadhuria D, Suresh KJ, Benaboud S, Prie D, Thervet E, Urien S, Legendre C, Souberbielle JC, Hirt D, Friedlander G, Treluyer JM, Courbebaisse M, Arias M, Arias M, Campistol J, Pascual J, Grinyo JM, Hernandez D, Morales JM, Pallardo LM, Seron D, Senecal L, Boucher A, Dandavino R, Boucher A, Colette S, Vallee M, Lafrance JP, Tung-Min Y, Min-Ju W, Cheng-Hsu C, Chi-Hung C, Kuo-Hsiung S, Mei-Chin W, Direkze S, Khorsavi M, Khorsavi M, Stuart S, Goode A, Jones G, Chudek J, Kolonko A, Wiecek A, Massimetti C, Napoletano I, Imperato G, Muratore MT, Fazio S, Pessina G, Brescia F, Feriozzi S, Tanaka K, Sakai K, Futaki A, Hyoudo Y, Muramatsu M, Kawamura T, Shishido S, Hara S, Kushiyama A, Aikawa A, Jankowski K, Gozdowska J, Lewandowska D, Kwiatkowski A, Durlik M, Pruszczyk P, Obi Y, Ichimaru N, Kato T, Okumi M, Kaimori J, Yazawa K, Nonomura N, Isaka Y, Takahara S, Aimele M, Christophe R, Geraldine D, Eric R, Alexandre H, Masson I, Nicolas M, Ivan T, Acil J, Lise T, Aoumeur HA, Laurence D, Pierre D, Etienne C, Lionel R, Nassim K, Emmanuel M, Eric A, Christophe M, Webb L, Casula A, Tomson C, Ben-Shlomo Y, Alexandre K, Pierre B, Jean-Philippe H, Dominique P, Christophe L, Alexei G, Michel D, Shah P, Kute VB, Vanikar A, Gumber M, Modi P, Trivedi H, GoIebiewska J, Debska-Slizien A, Rutkowski B, Domanski L, Dutkiewicz G, Kloda K, Pawlik A, Ciechanowicz A, Binczak-Kuleta A, Rozanski J, Myslak M, Safranow K, Ciechanowski K, Aline CS, Basset T, Delavenne X, Alamartine E, Mariat C, Kloda K, Domanski L, Pawlik A, Bobrek-Lesiakowska K, Wisniewska M, Romanowski M, Safranow K, Kurzawski M, Rozanski J, Myslak M, Ciechanowski K, De Borst M, Baia L, Navis G, Bakker S, Ranghino A, Tognarelli G, Basso E, Messina M, Manzione AM, Daidola G, Segoloni GP, Kimura T, Yagisawa T, Ishikawa N, Sakuma Y, Hujiwara T, Nukui A, Yashi M, Kim JH, Kim SS, Han DJ, Park SK, Randhawa G, Gumber M, Kute VB, Shah P, Patel H, Vanikar A, Modi P, Trivedi H, Taheri S, Goker-Alpan O, Ibrahim J, Nedd K, Shankar S, Lein H, Barshop B, Boyd E, Holida M, Hillman R, Ibrahim J, Mardach R, Wienreb N, Rever B, Forte R, Desai A, Wijatyk A, Chang P, Martin R. Transplantation - clinical I. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs230] [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: 11/14/2022] Open
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Sternberg A, Gal-Yam A, Simon JD, Leonard DC, Quimby RM, Phillips MM, Morrell N, Thompson IB, Ivans I, Marshall JL, Filippenko AV, Marcy GW, Bloom JS, Patat F, Foley RJ, Yong D, Penprase BE, Beeler DJ, Prieto CA, Stringfellow GS. Circumstellar Material in Type Ia Supernovae via Sodium Absorption Features. Science 2011; 333:856-9. [PMID: 21836010 DOI: 10.1126/science.1203836] [Citation(s) in RCA: 196] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- A. Sternberg
- Benoziyo Center for Astrophysics, Faculty of Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - A. Gal-Yam
- Benoziyo Center for Astrophysics, Faculty of Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - J. D. Simon
- Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - D. C. Leonard
- Department of Astronomy, San Diego State University, San Diego, CA 92182, USA
| | - R. M. Quimby
- Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - M. M. Phillips
- Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile
| | - N. Morrell
- Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile
| | - I. B. Thompson
- Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - I. Ivans
- Department of Physics and Astronomy, The University of Utah, Salt Lake City, UT 84112, USA
| | - J. L. Marshall
- Department of Physics, Texas A&M University, 4242 TAMU, College Station, TX 77843, USA
| | - A. V. Filippenko
- Department of Astronomy, University of California, Berkeley, CA 94720–3411, USA
| | - G. W. Marcy
- Department of Astronomy, University of California, Berkeley, CA 94720–3411, USA
| | - J. S. Bloom
- Department of Astronomy, University of California, Berkeley, CA 94720–3411, USA
| | - F. Patat
- European Southern Observatory (ESO), Karl Schwarzschild Strasse 2, 85748, Garching bei München, Germany
| | - R. J. Foley
- Clay Fellow, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - D. Yong
- Research School of Astronomy and Astrophysics, The Australian National University, Mount Stromlo Observatory, Cotter Road, Weston ACT 2611, Australia
| | - B. E. Penprase
- Department of Physics and Astronomy, Pomona College, 610 North College Avenue, Claremont, CA 91711, USA
| | - D. J. Beeler
- Department of Physics and Astronomy, Pomona College, 610 North College Avenue, Claremont, CA 91711, USA
| | - C. Allende Prieto
- Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain
- Departamento de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain
| | - G. S. Stringfellow
- Center for Astrophysics and Space Astronomy, University of Colorado, 389-UCB, Boulder, CO 80309, USA
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Saxena SK, Ng TP, Yong D, Fong NP, Koh G. Subthreshold depression and cognitive impairment but not demented in stroke patients during their rehabilitation. Acta Neurol Scand 2008; 117:133-40. [PMID: 18184349 DOI: 10.1111/j.1600-0404.2007.00922.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Subthreshold depression (sD) and cognitive impairment but not demented (CIND) in stroke patients are associated with poorer rehabilitative outcomes. Their diagnosis can easily be operationalized using validated scales. AIM The aim of the study was to ascertain the prevalence of depressive symptoms and cognitive impairment in stroke patients during three crucial stages of the rehabilitative process, viz. upon admission, upon planned discharges from rehabilitation hospitals and at 6 months post-stroke, using validated scales like the Geriatric Depression Scale and Abbreviated Mental Test (recommended by the British Geriatric Society). Their baseline risk factors were also ascertained. RESULTS On admission, the prevalence of depressive symptoms and cognitive impairment was 60% and 54% respectively. The prevalence upon planned discharges and 6 months post-stroke, respectively, of depressive symptoms was 38% and 34% and that of impaired cognition was 33% and 40%. Baseline independent correlates at 6 months post-stroke depressive symptoms were: recurrent stroke (OR 3.34); on admission cognitive impairment (OR 4.78) and ADL dependence (OR 5.28). And that of cognitive impairment were: increasing age (OR 8.07); post-stroke dysphagia (OR 4.58); on admission cognitive impairment (OR 23.95) and on admission depressive symptoms (OR 3.50). CONCLUSIONS Continuous screening and appropriate intervention, especially at baseline, would significantly decrease the burden posed by stroke patients with such psychological impairments in the community.
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Saxena SK, Ng TP, Koh G, Yong D, Fong NP. Is improvement in impaired cognition and depressive symptoms in post-stroke patients associated with recovery in activities of daily living? Acta Neurol Scand 2007; 115:339-46. [PMID: 17489945 DOI: 10.1111/j.1600-0404.2006.00751.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Depression and cognitive impairment after stroke are associated with physical functional outcomes, but there are limited data on whether depressive symptoms and cognitive status and improvements independently influence functional status and recovery. METHODS In a 6-month prospective cohort study of 141 post-acute stroke patients, demographic and clinical data on admission, and neurological, cognitive, depressive symptoms and functional variables on admission and at 6 months after stroke were measured using the National Institute of Health Stroke Scale (NIHSS), Abbreviated Mental Test (AMT), Geriatric Depression Scale (GDS) and Barthel Index (BI). RESULTS On multivariate analysis, severe activities of daily living (ADL) dependence at 6 months was significantly less likely associated with higher baseline AMT score denoting better cognitive status (OR=0.68, 95% CI 0.48-0.97 per score point) and with greater AMT change score denoting greater cognitive improvement (OR=0.61, 95% CI 0.41-0.91 per change score point); it was also more likely with higher baseline NIHSS scores denoting severe neurological impairment, (OR=1.74, 95% CI 1.13-2.63 per point score), NIHSS change score [denoting lesser neurological improvement (OR = 1.83, 95% CI 1.13-2.93 per unit change score)], but was not associated with baseline or change scores of GDS. Greater magnitudes of functional recovery [BI change score (standardized beta)] were associated with better baseline depressive symptoms (-0.21) and improvement (-0.31), but not with cognitive status or improvement, in the presence of other significant variables, neurological status (-0.89) and improvement (-0.65), lower baseline physical functional status (-0.85) and younger age (-0.23). CONCLUSIONS These data suggest that improving depressive symptoms in stroke patients may accelerate functional recovery, but the level of physical functioning achieved post-stroke is determined by neurological and cognitive factors, consistent with the evidence that improvement of depressive symptoms through therapeutic intervention is limited by cognitive impairment.
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Affiliation(s)
- S K Saxena
- National Disease Registries Office, Health Promotion Board, Singapore.
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Saxena SK, Koh GCH, Ng TP, Fong NP, Yong D. Determinants of length of stay during post-stroke rehabilitation in community hospitals. Singapore Med J 2007; 48:400-7. [PMID: 17453097] [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: 05/15/2023]
Abstract
INTRODUCTION Length of stay (LOS) in hospitals is the largest contributor of direct stroke care cost. Rehabilitation accounts for 16 percent of healthcare cost in the six-month post-stroke period. It is important to determine factors extending LOS in rehabilitation hospitals to identify focus areas of cost-control strategies. The aim of the study was to ascertain the predictors of LOS of post-stroke patients admitted into two community hospitals offering rehabilitation. METHODS An observational cohort study was conducted on 200 stroke patients admitted from acute hospitals into two community hospitals. Data collected included baseline sociodemographical variables, and the National Institute of Health Stroke Scale, Abbreviated Mental Test, Geriatric Depression Scale and Barthel Index were used to assess neurological impairment, cognitive impairment, depressive symptoms and functional disability, respectively. Medical complications (defined as new or exacerbated medical problems that generated additional physician evaluation, a change in medication or additional medical intervention), after patients were admitted to the community hospitals until discharged, were recorded. The outcome variables measured were length and cost of stay. RESULTS The mean LOS in our study was 34.4 (standard deviation [SD] 18.4) days, and the mean cost of hospital stay was S$2,410.83 (SD S$2,167.26). Length and cost of hospital stay were significantly correlated (r equals 0.52; p-value is less than 0.01). On multiple linear regression analysis, the significant variables positively associated with LOS were medical complications and functional dependence on admission. Significant variables negatively associated with LOS were unplanned discharge and recurrent strokes. CONCLUSION Medical complication is a key reversible determinant of increased LOS of post-stroke patients receiving rehabilitation in community hospitals. Strategies for prevention, early detection and treatment of medical complications during stroke rehabilitation are discussed.
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Affiliation(s)
- S K Saxena
- Department of Psychological Medicine, National University Hospital, Singapore 119074
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Kim H, Kim M, Kim CK, Yong D, Lee K, Chong Y, Park JW, Riley T. P517 Toxigenic status of Korean Clostridium difficile isolates. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70360-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Choi J, Kim Y, Kim M, Park Y, Song Y, Yong D, Lee K, Kim J. P957 The infiuence of antimicrobial resistance on mortality in critically ill patients with bacteraemia. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70798-7] [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: 11/16/2022]
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Kim C, Ko E, Yum J, Yong D, Lee K, Chong Y. P1010 Increasing diversity of metallo-β-lactamases produced by Gram-negative bacilli at a Korean hospital in 2006. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70851-8] [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: 11/16/2022]
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Saxena SK, Ng TP, Yong D, Fong NP, Gerald K. Total direct cost, length of hospital stay, institutional discharges and their determinants from rehabilitation settings in stroke patients. Acta Neurol Scand 2006; 114:307-14. [PMID: 17022777 DOI: 10.1111/j.1600-0404.2006.00701.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Length of hospital stay (LOHS) is the largest determinant of direct cost for stroke care. Institutional discharges (acute care and nursing homes) from rehabilitation settings add to the direct cost. It is important to identify potentially preventable medical and non-medical reasons determining LOHS and institutional discharges to reduce the direct cost of stroke care. AIM The aim of the study was to ascertain the total direct cost, LOHS, frequency of institutional discharges and their determinants from rehabilitation settings. METHODOLOGY Observational study was conducted on 200 stroke patients in two rehabilitation settings. The patients were examined for various socio-demographic, neurological and clinical variables upon admission to the rehabilitation hospitals. Information on total direct cost and medical complications during hospitalization were also recorded. The outcome variables measured were total direct cost, LOHS and discharges to institutions (acute care and nursing home facility) and their determinants. RESULTS The mean and median LOHS in our study were 34 days (SD = 18) and 32 days respectively. LOHS and the cost of hospital stay were significantly correlated. The significant variables associated with LOHS on multiple linear regression analysis were: (i) severe functional impairment/functional dependence Barthel Index < or = 50, (ii) medical complications, (iii) first time stroke, (iv) unplanned discharges and (v) discharges to nursing homes. Of the stroke patients 19.5% had institutional discharges (22 to acute care and 17 to nursing homes). On multivariate analysis the significant predictors of discharges to institutions from rehabilitation hospitals were medical complications (OR = 4.37; 95% CI 1.01-12.53) and severe functional impairment/functional dependence. (OR = 5.90, 95% CI 2.32-14.98). CONCLUSION Length of hospital stay and discharges to institutions from rehabilitation settings are significantly determined by medical complications. Importance of adhering to clinical pathway/protocol for stroke care is further discussed.
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Song W, Kim JS, Kim HS, Jeong SH, Yong D, Lee KM. Emergence of Escherichia coli isolates producing conjugative plasmid-mediated DHA-1 β-lactamase in a Korean university hospital. J Hosp Infect 2006; 63:459-64. [PMID: 16772105 DOI: 10.1016/j.jhin.2006.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Accepted: 03/07/2006] [Indexed: 11/16/2022]
Abstract
Seven isolates of cefoxitin-resistant Escherichia coli with an inducible phenotype were detected between November 2002 and July 2003 in a Korean hospital. Conjugations were tested by the filter mating method using azide-resistant E. coli J53 as the recipient. All isolates and their transconjugants were tested for broth microdilution minimum inhibitory concentrations, isoelectric focusing (IEF), polymerase chain reaction (PCR) for SHV, TEM, CTX-M and DHA-derived beta-lactamases, and DNA sequencing. XbaI-digested genomic DNA bands of the seven isolates were separated by pulsed-field gel electrophoresis (PFGE). IEF, PCR and sequence analysis revealed that all isolates possessed a blaTEM-1-like and a blaDHA-1 gene. Two isolates also carried the blaCTX-M-14 gene. Transfer of the resistance by conjugation experiments of all seven isolates was successful, suggesting that the blaDHA-1-containing plasmids in the E. coli isolates were self-transmissible. The isolates were recovered from patients in wards or an intensive care unit, all of which had been exposed to beta-lactams before isolation of the DHA-1 producers. Five patterns among the seven isolates were demonstrated by PFGE; sporadic infections with E. coli possessing an inducible beta-lactam resistance phenotype were found. DHA-1 encoded by conjugative plasmids conferred the resistance phenotype. The spread of the DHA-1 producers was due to both clonal spread and horizontal transfer of the resistance gene.
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Affiliation(s)
- W Song
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea.
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Choi JY, Park YS, Kim CO, Park YS, Yoon HJ, Shin SY, Kim YA, Song YG, Yong D, Lee K, Kim JM. Mortality risk factors of Acinetobacter baumannii
bacteraemia. Intern Med J 2005; 35:599-603. [PMID: 16207259 DOI: 10.1111/j.1445-5994.2005.00925.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Acinetobacter baumannii is one of the most important nosocomial pathogens, and its multiple antibiotic resistance has emerged as an obstacle in the treatment of these infections worldwide. AIMS To identify risk factors of mortality for A. baumannii bacteraemia. METHODS A retrospective cohort study of 72 patients with significant A. baumannii bacteraemia was conducted to evaluate risk factors for mortality. RESULTS The median age of the 72 enrolled patients was 48 years, 96% of the cases were hospital-acquired, and the bacteraemia-related mortality rate was 29% (21 of 72 patients). Univariate analysis revealed that the risk factors for mortality included: an elevated acute physiology and chronic health evaluation (APACHE II) score, receipt of in vitro ineffective definitive antimicrobial therapy, in vitro A. baumannii resistance to cefoperazone/ sulbactam, neutropenia, and presentation with septic shock. Multivariate analysis reveals that the independent risk factors for mortality are neutropenia and elevated APACHE II scores. CONCLUSION Risk factors such as neutropenia and elevated APACHE II scores are found to be associated with higher mortality rates of A. baumannii bacteraemia. Further study is necessary for the determination of optimal strategies for both the prevention and treatment of these infections.
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Affiliation(s)
- J Y Choi
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea
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Jeong SH, Bae IK, Kwon SB, Lee K, Yong D, Woo GJ, Lee JH, Jung HI, Jang SJ, Sung KH, Lee SH. Investigation of a nosocomial outbreak of Acinetobacter baumannii producing PER-1 extended-spectrum beta-lactamase in an intensive care unit. J Hosp Infect 2005; 59:242-8. [PMID: 15694982 DOI: 10.1016/j.jhin.2004.09.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2004] [Accepted: 09/10/2004] [Indexed: 02/06/2023]
Abstract
We investigated an outbreak of Acinetobacter baumannii in an adult intensive care unit of Kosin University Gospel Hospital in Busan, Republic of Korea. The outbreak involved 10 cases of infection by A. baumannii producing PER-1 extended-spectrum beta-lactamase over a seven-month period, and was caused by a single pulsed-field gel electrophoresis clone. The epidemic isolates were characterized by slight synergy between clavulanic acid and cefepime. Isoelectric focusing of crude bacterial extracts detected two nitrocefin-positive bands with pI values of 8.0 and 5.3. Polymerase chain reaction amplification and characterization of the amplicons by restriction analysis and direct sequencing indicated that the epidemic isolates carried a bla(PER-1) determinant. The epidemic isolates were characterized by a multidrug-resistant phenotype that remained unchanged over the outbreak, including penicillins, beta-lactam/beta-lactamase inhibitor, extended-spectrum cephalosporins and monobactams. Isolation of infected patients and appropriate carbapenem therapy were successful in ending the outbreak. Our report indicates that the bla(PER-1) resistance determinant may become an emerging therapeutic problem.
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Affiliation(s)
- S H Jeong
- Department of Laboratory Medicine and Graduate School of Public Health, Kosin University College of Medicine, Busan, Republic of Korea
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Choi JY, Park YS, Cho CH, Park YS, Shin SY, Song YG, Yong D, Lee K, Kim JM. Synergic in-vitro activity of imipenem and sulbactam against Acinetobacter baumannii. Clin Microbiol Infect 2004; 10:1098-101. [PMID: 15606639 DOI: 10.1111/j.1469-0691.2004.00987.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The interaction between sulbactam and imipenem was evaluated with four clinical isolates of Acinetobacter baumannii, including two isolates resistant to imipenem, one of which produced IMP-1 metallo-beta-lactamase. Two isolates (one of which was imipenem-resistant) were sulbactam-resistant by undefined mechanisms. MICs were determined by standard broth microdilution methods. Time-kill assays with imipenem and sulbactam, alone or in combination at 0.5 x MIC and 1 x MIC, showed a synergic effect in all four isolates of A. baumannii after incubation for 0, 4, 8 and > 24 h at 35 degrees C.
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Affiliation(s)
- J Y Choi
- Department of Internal Medicine and AIDS Research Institute, BK21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
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Xiaoqiao Z, Rong M, Zhigang Y, Yong D, Xihong F, Jingzhong S. Protective effect of ulinastatin against ischemia-reperfusion injury in rat small bowel transplantation. Transplant Proc 2004; 36:1564-6. [PMID: 15251386 DOI: 10.1016/j.transproceed.2004.05.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION We aimed, to evaluate the protective effects of ulinastatin (UTI) against graft ischemia-reperfusion injury in rat small bowel transplantation (SBT). METHODS Thirty-six recipients of rat SBT were randomly divided into three groups: 1, normal control, the graft was implanted immediately after harvest; 2, grafts preserved for 4 hours; and 3, grafts preserved for 4 hours and UTI administered to the recipients intravenously (50000 U/kg/d). Variables included pathological score and content of Na+-K+-ATPase, xanthine oxidase (XOD), malondialdehyde (MDA) and glutathione (GSH) in the transplanted small intestine. RESULTS The cold preservation caused moderate injury to the graft which was manifested by pathological changes as well as elevated XOD and MDA and decreased Na+-K+-ATPase and GSH content. Application of UTI diminished these changes. CONCLUSIONS UTI may exert protective effects against the ischemia-reperfusion injury of transplanted small intestine thereby promoting structural and functional recovery of the graft.
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Affiliation(s)
- Z Xiaoqiao
- Department of General Surgery, General Hospital of Jinan Command, Jinan, Shandong, People's Republic of China.
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Lee K, Lim YS, Yong D, Yum JH, Chong Y. Evaluation of the Hodge test and the imipenem-EDTA double-disk synergy test for differentiating metallo-beta-lactamase-producing isolates of Pseudomonas spp. and Acinetobacter spp. J Clin Microbiol 2004; 41:4623-9. [PMID: 14532193 PMCID: PMC254300 DOI: 10.1128/jcm.41.10.4623-4629.2003] [Citation(s) in RCA: 345] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Gram-negative bacilli with acquired metallo-beta-lactamase (MBL) production have been increasingly reported in some countries, necessitating their detection. The aim of this study was to evaluate the performance of the Hodge test and those of the imipenem (IPM)-EDTA, ceftazidime (CAZ)-mercaptopropionic acid (MPA), and CAZ-sodium mercaptoacetic acid (SMA) double-disk synergy tests (DDSTs). The efficiencies of testing CAZ-resistant and IPM-nonsusceptible isolates were also compared. Strains used for the evaluation were known IMP-1 and VIM-2 MBL-producing isolates and consecutive and CAZ-nonsusceptible isolates of pseudomonads and acinetobacters. The performance of the Hodge test was improved by addition of zinc sulfate (140 microg/disk) to an IPM disk. In DDSTs, EDTA (ca. 1,900 microg) disks were better at detecting MBL-producing strains among pseudomonads, while MPA (3 microl) and SMA (3 mg) disks performed better for acinetobacters. EDTA (ca. 750 microg)-plus-SMA (ca. 2 mg) disks performed better than EDTA, MPA, or SMA disks with both organisms. CAZ-SMA DDSTs failed to detect 22 of 80 (28%) MBL-producing acinetobacters. In conclusion, use of an IPM disk and an EDTA (750 microg)-plus-SMA (2 mg) disk improves performance, and testing IPM-nonsusceptible isolates rather than CAZ-resistant isolates could reduce screening work. Further evaluation of the test is required for the detection of other types of MBL-producing gram-negative bacilli.
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Affiliation(s)
- K Lee
- Department of Laboratory Medicine, Research Institute of Bacterial Resistance, and BK21 Project for Medical Sciences, Yonsei University College of Medicine, Seodaemun-ku, Seoul 120-752, Korea
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Lee K, Lim JK, Yong D, Yum J, Chong Y, Okamoto R, Inoue M. Evaluation of efficiency of screening extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in hospitals where the bacteria are increasingly prevalent. J Clin Microbiol 2001; 39:3696-9. [PMID: 11574594 PMCID: PMC88410 DOI: 10.1128/jcm.39.10.3696-3699.2001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The disk screening methods for extended-spectrum beta-lactamase-producing strains were evaluated. The confirmatory work is reduced significantly in settings such as those in this study, by changing the cefpodoxime breakpoint to < or =20 mm and by not testing cefoxitin-resistant isolates. Cefotaxime and ceftazidime disk screening is reliable, and the laboratory-prepared cefotaxime- and ceftazidime-clavulanic acid disks are stable at -20 degrees C for 12 weeks.
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Affiliation(s)
- K Lee
- Department of Clinical Pathology, Research Institute of Bacterial Resistance, and BK21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
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Lee K, Chong Y, Shin HB, Kim YA, Yong D, Yum JH. Modified Hodge and EDTA-disk synergy tests to screen metallo-beta-lactamase-producing strains of Pseudomonas and Acinetobacter species. Clin Microbiol Infect 2001; 7:88-91. [PMID: 11298149 DOI: 10.1046/j.1469-0691.2001.00204.x] [Citation(s) in RCA: 334] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- K Lee
- Department of Clinical Pathology and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, C.P.O. Box 8044, Seoul, Korea
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Lee K, Shin JW, Lim JB, Kim YA, Yong D, Oh HB, Chong Y. Emerging antimicrobial resistance, plasmid profile and pulsed-field gel electrophoresis pattern of the endonuclease-digested genomic DNA of Neisseria gonorrhoeae. Yonsei Med J 2000; 41:381-6. [PMID: 10957893 DOI: 10.3349/ymj.2000.41.3.381] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Resistant gonococci are very prevalent in many countries, particularly in Asia. This study was conducted to determine the trend of resistance, the effect of decreasing the ciprofloxacin susceptibilities of gonococci on the prevalence of penicillinase-producing N. gonorrhoeae (PPNG), and to compare the epidemiology of strains with the previous studies. A total of 602 strains of gonococci were isolated from prostitutes in 1997-1999. Antimicrobial susceptibility was tested by NCCLS disk diffusion and agar dilution methods. For epidemiologic analysis, plasmid analysis and pulsed-field gel electrophoresis (PFGE) were performed. The proportion of PPNG remained high (79%), and the strains with decreased susceptibility to ciprofloxacin increased significantly from 67% in 1997 to 84% in 1999. Compared to our previous study, the PFGE patterns were similar, while the proportion of strain with the 3.2-MDa plasmid markedly decreased. In conclusion, a rapid increase in ciprofloxacin-nonsusceptible strains may suggest difficulties in the treatment of gonococcal infections in the near future with the drug. The recent decrease of PPNG with the 3.2-MDa plasmid may suggest that there is an epidemiological change in gonococcal infections, and the prevalence of related PFGE patterns suggests the dissemination of a few clones among the high risk populations.
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Affiliation(s)
- K Lee
- Department of Clinical Pathology, Yonsei University College of Medicine, Seoul, Korea.
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Abstract
Klinefelter syndrome (KS) is often associated with various neoplasms, especially germ cell tumors. Mediastinum is the most favored site of extragonadal germ cell tumors with KS, which is somewhat different from those without KS. The retroperitoneal germ cell tumor in KS is very rare. A five-month-old boy with an abdominal mass was found to have a retroperitoneal tumor. After surgical removal, he was diagnosed to have mature cystic teratoma. Cytogenetic study of his peripheral lymphocytes revealed that his karyotype was consistent with KS. This case suggests that patients with KS might be at risk of having germ cell tumors in sites other than mediastinum. It also suggests that all cases with these tumors should be screened for the presence of karyotypic abnormalities, and it might help to assess the exact correlation between germ cell tumors and KS, and to treat them accordingly.
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Affiliation(s)
- D Yong
- Department of Clinical Pathology, Yonsei University College of Medicine, Seoul, Korea.
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Trevejo RT, Abbott SL, Wolfe MI, Meshulam J, Yong D, Flores GR. An untypeable Shigella flexneri strain associated with an outbreak in California. J Clin Microbiol 1999; 37:2352-3. [PMID: 10364614 PMCID: PMC85161 DOI: 10.1128/jcm.37.7.2352-2353.1999] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Eleven Shigella flexneri (group B) isolates were recovered from epidemiologically linked patrons and food handlers from a restaurant-associated outbreak of shigellosis. Six isolates available for pulsed-field gel electrophoresis were identical. All strains agglutinated in group B and subgroup factor 6 sera but not in group 1 through group 6 sera.
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Affiliation(s)
- R T Trevejo
- Sonoma County Department of Health Services, Santa Rosa, California 95404, USA.
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Yong D, Lim SH, Zhao CX, Cui SL, Zhang L, Lee TL. Acupuncture treatment at Ang Mo Kio Community Hospital--a report on our initial experience. Singapore Med J 1999; 40:260-4. [PMID: 10487080] [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: 02/14/2023]
Abstract
BACKGROUND We report our initial experience with acupuncture treatment at the Ang Mo Kio Community Hospital's Acupuncture Research Clinic. PATIENTS One thousand one hundred and twenty-eight patients received a total of 12,172 acupuncture treatment sessions during the period between September 1995 and December 1996. The majority were Chinese (94%), between 40-70 years (70%) with either dialect or Mandarin (68%) as the main spoken language. However, one third of the patients were English speaking, and educational level did not seem to be a factor among our patients accepting acupuncture treatment. Most had either painful conditions (58%) or stroke-related dysfunction (23%). Amongst the painful conditions, arthritis (25%), low back pain (22%) and other musculo-skeletal pain (12%) were the most common. RESULTS Prior to treatment, about three-quarter of patients believed acupuncture would benefit them while 40% had tried acupuncture before. After completion of treatment, 70% of all patients considered acupuncture safe, 54% were satisfied with the overall result, 51% felt acupuncture was beneficial, while 54% would recommend acupuncture to others with similar conditions. In a subgroup of patients treated for painful conditions, > 90% reported improvement. Near-syncope occurred in 2 patients (0.18%) or during 2 treatment sessions (0.02%). There was no other acupuncture-related complication. CONCLUSION Our preliminary experience showed that acupuncture is safe, and appears to be beneficial to patients with painful conditions. An overview of acupuncture treatment is presented, and the issues of safety, efficacy and a need to conduct randomised controlled clinical trials are discussed.
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Affiliation(s)
- D Yong
- Acupunture Research Clinic (ARC), Ang Mo Kio Community Hospital, Singapore
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Affiliation(s)
- D Yong
- Heidelberg Hospital, Melbourne, Vic
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Abstract
We report on the diagnostic comparative study of the Chinese Classification of Mental Disorders-Second Edition (CCMD-2) and the DSM-III-R in a field trial in China. The Adult Diagnostic Interview Schedule-Second Edition (ADIS-2), a modified diagnostic interview schedule that can generate both CCMD-2 and DSM-III-R diagnoses, was used to test 254 psychiatric patients in China. It was found that the reliability and validity of the CCMD-2 and DSM-III-R are compatible in most diagnostic categories such as schizophrenia, delusional disorder, bipolar disorders, and depressive disorders. The discrepancies between Chinese and American diagnostic systems were found mainly in neurasthenia and hysterical neuroses. Such discrepancies may have resulted from frequent changes of the diagnostic terms in the West, such as the phenomenon of neurasthenia, or from creating a new disorder entity in CCMD-2, such as "Eastern gymnastic exercises-induced mental disorder. "Further cross-cultural studies focusing on these discrepant disorders are urgently needed to understand the cultural influences on diagnosis, as well as to improve the professional classification of mental disorders in different diagnostic systems.
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Affiliation(s)
- Y P Zheng
- Mental Health Institute, Hunan Medical University, Changsha, People's Republic of China
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Abstract
Hypertrophy of extensor digitorum longus muscle, overloaded by the removal of the synergist tibialis anterior (TA) muscle, in growing rats is inhibited if endogenous satellite cells are sterilized by exposure to irradiation. However, normal muscle growth is not eliminated, only diminished. To test whether irradiated, overloaded muscle can hypertrophy in the absence of normal growth-related stimuli, experiments were conducted on mature rats. TA muscle ablation caused hypertrophy of EDL muscle, characterized by a significant increase in muscle mass and the size of type IIx and type IIb fibers, and a proportional increase in the number of myonuclei. When ablation was preceded by irradiation, hypertrophy did not occur. The results indicate that satellite cell activation, division, and fusion is necessary for compensatory hypertrophy of fully mature muscle, and may be important to the understanding of the limits of recovery of inherited muscle myopathies treated by myogenic cell implantation.
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Affiliation(s)
- J D Rosenblatt
- Department of Physiology, Faculty of Medicine, University of Ottawa, Ontario, Canada
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Clement A, Yong D, Brechet C. Simultaneous Identification of Sugars by HPLC Using Evaporative Light Scattering Detection (ELSD) and Refractive Index Detection (RI). Application to Plant Tissues. ACTA ACUST UNITED AC 1992. [DOI: 10.1080/10826079208018836] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
A procedure is described for removing osteons from undecalcified, thin sections of bone. The method involves the use of a microdrilling machine in combination with a micromanipulator. The procedure allows a substantial reduction in the time required for microdissection over previously described methods while permitting the irregular contours of osteons to be followed with precision.
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