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Lin YC, Tsai WH, Chang SC, Hsu HC. Apoptotic Cell-Derived CD14(+) Microparticles Promote the Phagocytic Activity of Neutrophilic Precursor Cells in the Phagocytosis of Apoptotic Cells. Cells 2023; 12:1983. [PMID: 37566062 PMCID: PMC10417108 DOI: 10.3390/cells12151983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/12/2023] Open
Abstract
Membranous CD14 is crucial in the phagocytic activity of neutrophils. However, the role of CD14(+) microparticles (MPs) derived from apoptotic neutrophils (apo-MP) during the phagocytic process is not clear. All trans-retinoic acid (ATRA) induces acute promyelocytic leukemic NB4 cells along granulocytic differentiation. In this study, we investigated the role of CD14(+)apo-MP in the cell-cell interaction during the phagocytic process of apoptotic cells by viable ATRA-NB4 cells. We firstly demonstrate that CD14 expression and phagocytic activity of NB4 cells were upregulated simultaneously after ATRA treatment in a time-dependent manner, and both were significantly enhanced via concurrent lipopolysaccharide treatment. The phagocytic activity of ATRA-NB4 cells and lipopolysaccharide-treated ATRA-NB4 cells were both significantly attenuated by pre-treating cells with an antibody specific to either CD14 or TLR4. Further flow cytometric analysis demonstrates that apoptotic ATRA-NB4 cells release CD14(+)apo-MP in an idarubicin dosage-dependent manner. Both CD14 expression and the phagocytic activity of viable ATRA-NB4 cells were significantly enhanced after incubation with apo-MP harvested from apoptotic ATRA-NB4 cells, and the apo-MP-enhanced phagocytic activity was significantly attenuated by pre-treating apo-MP with an anti-CD14 antibody before incubation with viable cells. We conclude that CD14(+)apo-MP derived from apoptotic ATRA-NB4 cells promotes the phagocytic activity of viable ATRA-NB4 cells in engulfing apoptotic cells.
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Affiliation(s)
- Yu-Chieh Lin
- Department of Physiology, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan; (Y.-C.L.)
- Sleep Medicine Center, Division of Chest Medicine, Taichung Tzu Chi Hospital, Taichung 427, Taiwan
| | - Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei 106, Taiwan;
| | - Shao-Chi Chang
- Department of Physiology, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan; (Y.-C.L.)
| | - Hui-Chi Hsu
- Department of Medicine, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Division of Hematology & Oncology, Department of Medicine, Cheng-Hsin General Hospital, Taipei 112, Taiwan
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Chen CF, Yu YB, Tsai SW, Chiu JW, Hsiao LT, Gau JP, Hsu HC. Total knee replacement for patients with severe hemophilic arthropathy in Taiwan: A nationwide population-based retrospective study. J Chin Med Assoc 2022; 85:228-232. [PMID: 34698692 DOI: 10.1097/jcma.0000000000000646] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Total knee replacement (TKR) surgery is a treatment option for advanced hemophilic arthropathy. Due to its rarity and complexity, previous reports could only demonstrate the results of single-site studies including few cases. This population-based study aimed to investigate the major epidemiological characteristics, mean consumption of coagulation factors, length of hospital stays, complications, and failure rate of primary TKR for severe hemophilia patients in Taiwan. METHODS A cohort of 996 hemophilia patients registered between 1995 and 2011 was included, and 103 primary TKRs were performed on 75 patients. Unilateral TKR was performed on 47 patients and bilateral TKRs on the remaining 28 patients, including 12 simultaneous and 16 staged surgeries. The mean age at surgery was 32.3 years (range, 17.3-55.7), and the mean follow-up duration was 77.9 months (range, 2.3-176.8). RESULTS Failure was noted in 8 patients (8.5%) at mean 32.8 months (range, 2.3-95) after surgery. Four patients revealed aseptic loosening, whereas infection in 4. The 10-year prosthesis survivorship was 88.6%. For patients receiving unilateral TKR, the mean length of hospital stay was 15 days (range, 7-32). The mean cost of factor supplement was United States Dollar (USD) 43 543 with a mean 4-unit packed red blood cells transfusion (range, 0-38). The total admission cost was USD 48 326 (range, USD 4165-262 619). CONCLUSION The prevalence of TKA for hemophilia patients was 7.5% in Taiwan. The mean hospital stay was 14 days, and the 10-year prosthesis survivorship was 88.6%. The mean daily factor usage was decreased from 235.7 units preoperatively to 202.1 units postoperatively. In comparison with the staged-bilateral TKRs, the simultaneous procedures significantly reduced the mean total cost from USD 101 923 to USD 61 587 (p = 0.023). Therefore, in terms of cost-effectiveness, bilateral simultaneous TKR is more preferable than staged procedures.
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Affiliation(s)
- Cheng-Fong Chen
- Division of Joint Reconstruction, Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Surgery, School of Medicine, National Yang Ming Chiao Tong University, Taipei, Taiwan, ROC
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Yuan-Bin Yu
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Shang-Wen Tsai
- Division of Joint Reconstruction, Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Surgery, School of Medicine, National Yang Ming Chiao Tong University, Taipei, Taiwan, ROC
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Jan-Wei Chiu
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Liang-Tsai Hsiao
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Jyh-Pyng Gau
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Hui-Chi Hsu
- Haemophilia and Thrombosis Comprehensive Treatment Center, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
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Tsai WH, Chang SC, Lin YC, Hsu HC. CX3CL1(+) Microparticles-Induced MFG-E8 Enhances Apoptotic Cell Clearance by Alveolar Macrophages. Cells 2021; 10:cells10102583. [PMID: 34685562 PMCID: PMC8533702 DOI: 10.3390/cells10102583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/16/2021] [Accepted: 09/24/2021] [Indexed: 12/20/2022] Open
Abstract
During the resolution phase of acute lung injury, apoptotic cells release CX3CL1 as a “find-me” signal to attract alveolar macrophage transmigration toward apoptotic cells for phagocytosis. However, it is still not clear whether CX3CL1 has pro-phagocytic activity on alveolar macrophage. In this study, we investigated the role of apoptotic NB4 cells-derived CX3CL1(+) microparticles (apo-MP) on the phagocytic activity of NR8383 cells. We demonstrate that exogenous CX3CL1 and apo-MP enhanced the phagocytic activity of NR8383 cells in a CX3 CR1-dependent manner. The apo-MP-enhanced phagocytic activity on NR8383 was attenuated when apo-MP and NR8383 cells were pre-treated with anti-CX3CL1 antibodies and anti-CX3CR1 antibody, respectively, before incubating both for phagocytic assay. Further studies demonstrate that exogenous CX3CL1 and apo-MP also enhanced NR8383 cells in their surface expression and release of MFG-E8 in a CX3CR1 dependent manner. The enhanced phagocytic activity of CX3CL1-treated NR8383 cells was attenuated when NR8383 cells were pre-treated with an anti-MFG-E8 antibody before CX3CL1 treatment. We conclude that apoptotic cell-derived CX3CL1(+) microparticles enhance the phagocytic activity of NR8383 cells by up-regulating their MFG-E8 as a bridge molecule, and these contribute to the formation of phagocytic synapses between apoptotic cells and alveolar macrophages for the subsequent phagocytic clearance of apoptotic cells.
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Affiliation(s)
- Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei 106, Taiwan;
| | - Shao-Chi Chang
- Department of Physiology, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan; (S.-C.C.); (Y.-C.L.)
| | - Yu-Chieh Lin
- Department of Physiology, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan; (S.-C.C.); (Y.-C.L.)
- Sleep Medicine Center, Division of Chest Medicine, Taichung Tzu Chi Hospital, Taichung 427, Taiwan
| | - Hui-Chi Hsu
- Department of Medicine, School of Medicine, National Yang-Ming Chiao-Tung University, Taipei 112, Taiwan
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Division of Hematology & Oncology, Department of Medicine, Chan-Hsin General Hospital, Taipei 112, Taiwan
- Correspondence:
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Chang CC, Huang HC, Lee WS, Chuang CL, Huang LJ, Lu DY, Yang YY, Hsu HC. Early clinical exposure improves medical students' recognition of the need for professionalism and interprofessional collaboration. J Chin Med Assoc 2021; 84:778-782. [PMID: 34225335 DOI: 10.1097/jcma.0000000000000575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Medical students in Taiwan start their clerkship in their fifth year. A lack of early clinical exposure can mean they have a lack of medical professionalism and collaborative practice. This study investigates whether early engagement in hospital-based clinical practice could improve their understanding of these requirements. METHODS From 2017 to 2019, a total of 59 medical students at the end of their third year joined a 2-week summer camp at the hospital. Every participant was assigned to work with one patient and they accompanied this patient throughout their hospital course. The students were also asked to interview other medical professionals within the hospital and to write up interview reports. In addition, they had to complete pre- and postcamp questionnaires which included 10 questions to evaluate their recognition of professionalism, doctor-patient relationships, and interprofessional collaboration. Answers to the questions were all rated using a 5-score Likert scale. RESULTS The total postcamp Likert scores were significantly increased after the 2-week training camp compared with the precourse scores (pre- vs postcourse: 44.08 ± 0.45 vs 46.66 ± 0.33, p < 0.001). In addition, the students' recognition of medical professionalism, the importance of communication with patients, and their respect for other medical professionals were significantly improved after the 2-week training. CONCLUSION Our data showed that early clinical exposure through a preclerkship summer camp can help medical students improve their recognition of medical professionalism and interprofessional collaboration.
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Affiliation(s)
- Ching-Chih Chang
- Divisions of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Hui-Chun Huang
- Divisions of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Wen-Shin Lee
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
- Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan, ROC
| | - Chiao-Lin Chuang
- Divisions of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Ling-Ju Huang
- Divisions of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Dai-Yin Lu
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Ying-Ying Yang
- Divisions of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
- Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Hui-Chi Hsu
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
- Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
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Huang LJ, Huang HC, Chuang CL, Chang SL, Tsai HC, Lu DY, Yang YY, Chang CC, Hsu HC, Lee FY. Role-play of real patients improves the clinical performance of medical students. J Chin Med Assoc 2021; 84:183-190. [PMID: 32925298 DOI: 10.1097/jcma.0000000000000431] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND This study aimed to evaluate whether the role-play (RP) of real patients by medical students as part of interactive clinical reasoning training can improve medical students' clinical performance. METHODS A total of 26 medical students volunteered to portray real patients within this program and were treated as the RP group while the other 72 students as the non-RP group. In the interactive morning meeting, the medical students practiced how to approach the RP student as if they were encountering a real patient. All students were evaluated by mini-clinical evaluation exercises (mini-CEX) before and after this training program. RESULTS We found that all students had an increased total mini-CEX score after 4-week training, especially for interviewing skills. Notably, after training, the RP students had significantly elevated total mini-CEX scores (51.23 ± 1.06 vs 53.12 ± 1.11, p = 0.028), and for counselling (7.15 ± 0.14 vs 7.54 ± 0.18, p = 0.015) and overall clinical competence (7.27 ± 0.15 vs 7.65 ± 0.16, p = 0.030). In contrast, the non-RP students had lower scores compared with the RP group, as revealed by both the pre- and post-training tests. Moreover, their mini-CEX scores were not improved after training. CONCLUSION Medical students who were motivated to RP real patients had better performance scores than those who did not. In addition, RP can enhance their counselling skills and clinical competences.
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Affiliation(s)
- Ling-Ju Huang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Hui-Chun Huang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Chiao-Lin Chuang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Shu-Luen Chang
- Medical Department, Taipei Veterans General Hospital, Hsinchu Branch, Hsinchu, Taiwan, ROC
| | - Hung-Cheng Tsai
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Dai-Yin Lu
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Ying-Ying Yang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
- Division of Clinical Skills Training, Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ching-Chih Chang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Hui-Chi Hsu
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
- Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Fa-Yauh Lee
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
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Abstract
UNLABELLED Osteoporosis is a well-known bone disorder affecting people worldwide. Patients with osteoporosis have an increased risk of bone fracture. This study provides new information on the risk of developing osteoporosis post burn injury and the risk of fracture among those with osteoporosis developed. INTRODUCTION The relationship between burn injury and hip fracture risk is unclear. Population-based evaluation on relationships between burn injury and osteoporosis development and subsequent fractures is limited. We conducted a retrospective cohort study as the investigation. METHODS From the insurance data of Taiwan, we established a cohort of 43,532 patients with a burn injury in 2000-2012 and a comparison cohort of 174,124 individuals without such an injury, frequency matched by sex, age, and diagnosis date. Both cohorts were followed up to the end of 2013 to evaluate the occurrence of osteoporosis and hip fracture. RESULTS The incidence of osteoporosis was greater in the burn cohort than in the comparison cohort (6.40 vs. 4.75 per 1,000 person-years) with an adjusted IRR of 1.35 (95% confidence interval = 1.32-1.39). The incidence rates in both cohorts were greater in women than in men, increased with age, income, and Charlson comorbidity index. Patients with burns involving 20%-49% of total body surface area and with burns confined to the lower/upper limbs had the greatest incidence rates, 8.32 and 8.58 per 1,000 person-years, respectively. Osteoporosis incidence increased further to 22.7 per 1,000 person-years for burn victims with comorbid diabetes. The risk of fracture was over five-fold greater for burn victims with osteoporosis developed than for comparisons without osteoporosis. CONCLUSION Patients who have a burn injury deserve prevention intervention to reduce the risk of osteoporosis and fracture.
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Affiliation(s)
- O Kaewboonchoo
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Bangkok, Thailand
| | - F C Sung
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Bangkok, Thailand
- Department of Health Services Administration, China Medical University College of Public Health, Taichung, Taiwan
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - C L Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - H C Hsu
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - C T Kuo
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Bangkok, Thailand.
- Department of Public Health, China Medical University College of Public Health, 91 Hseuh Shis Road, Taichung, 404, Taiwan.
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Huang CC, Hsu HC, Yang LY, Chen CH, Yang YY, Chang CC, Chuang CL, Lee WS, Lee FY, Hwang SJ. Peer-assisted learning model enhances clinical clerk's procedural skills. J Chin Med Assoc 2018; 81:747-753. [PMID: 29779999 DOI: 10.1016/j.jcma.2017.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/16/2017] [Accepted: 06/20/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Failure to transfer procedural skills learned in a laboratory to the bedside is commonly due to a lack of peer support/stimulation. A digital platform (Facebook) allows new clinical clerks to share experiences and tips that help augment their procedural skills in a peer-assisted learning/teaching method. This study aims to investigate the effectiveness of the innovation of using the digital platform to support the transfer of laboratory-trained procedural skills in the clinical units. METHODS Volunteer clinical clerks (n = 44) were enrolled into the peer-assisted learning (PAL) group, which was characterized by the peer-assisted learning of procedural skills during their final 3-month clinical clerkship block. Other clerks (n = 51) did not join the procedural skills-specific Facebook group and served as the self-directed learning regular group. The participants in both the PAL and regular groups completed pre- and post-intervention self-assessments for general self-assessed efficiency ratings (GSER) and skills specific self-assessed efficiency ratings (SSSER) for performing vein puncture, intravenous (IV) catheter and nasogastric (NG) tube insertion. Finally, all clerks received the post-intervention 3-station Objective Structured Clinical Skills Examination (OSCE) to test their proficiency for the abovementioned three procedural skills. RESULTS Higher cumulative numbers of vein punctures, IV catheter insertions and NG tube insertions at the bedside were carried out by the PAL group than the regular group. A greater improvement in GSERs and SSSERs for medical procedures was found in the PAL group than in the regular group. The PAL group obtained higher procedural skills scores in the post-intervention OSCEs than the regular group. CONCLUSION Our study suggested that the implementation of a procedural skill-specific digital platform effectively helps clerks to transfer laboratory-trained procedural skills into the clinical units. In comparison with the regular self-directed learning group, the peer-assisted learning characteristics of Facebook give additional benefits to the PAL group by enhancing their procedural skills.
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Affiliation(s)
- Chia-Chang Huang
- Division of Clinical Skills Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Hui-Chi Hsu
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Camillians Saint Mary's Hospital, Luodong, Yilan, Taiwan, ROC
| | - Ling-Yu Yang
- Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chen-Huan Chen
- Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Ying-Ying Yang
- Division of Clinical Skills Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC.
| | - Ching-Chih Chang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chiao-Lin Chuang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Wei-Shin Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Fa-Yauh Lee
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Shinn-Jang Hwang
- Taipei Veterans General Hospital, Taipei, Taiwan, ROC; School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
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Wang HY, Yang CF, Chiou TJ, Gau JP, Chen PM, Tsai CY, Hsu HC, Wang FD, Liu JH, Hsiao LT. Primary bone marrow lymphoma: A hematological emergency in adults with fever of unknown origin. Cancer Med 2018; 7:3713-3721. [PMID: 29984910 PMCID: PMC6089188 DOI: 10.1002/cam4.1669] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/25/2018] [Accepted: 06/16/2018] [Indexed: 11/08/2022] Open
Abstract
Primary bone marrow lymphoma (PBML) represents non‐Hodgkin lymphoma (NHL) that primarily arises in the bone marrow (BM) without lymphadenopathy. This condition has various definitions and can be masked by prolonged fever, leading to delayed diagnosis. We aimed to identify clinical features and risk indicators of PBML. We enrolled 269 adults with fever of unknown origin (FUO) who underwent a BM study for potential PBML. Thirty patients were diagnosed with PBML (26 and 4 patients in the training and validation cohort, respectively), and 20 patients (67%) showed initial manifestation of hemophagocytic lymphohistiocytosis (HLH). Among PBML patients in the training cohort, their median overall survival is short (8 days), with pneumonia being the most common direct cause of early mortality, followed by life‐threatening HLH. Despite extremely poor prognoses, some B‐cell PBML patients who survived 30 days after BM studies achieved long‐term survival with rituximab‐based treatment. To assist general practitioners in early PBML diagnosis when approaching adults with naïve FUO, we identified several risk indicators, including elevated serum alkaline‐phosphate levels, lowered serum immunoglobulin‐G levels, cytopenia in ≥2 lineages, and peripheral blood leukoerythroblastosis. Our recently published scoring system, which can predict hematological BM disease in FUO adults, showed excellent ability in recognizing PBML early, with high sensitivity and specificity. We conclude that PBML is a specific “clinical” phenotype of NHL; moreover, we have identified diagnostic clues for early identification of FUO adults with underlying PBML, which should be considered a hematological emergency once suspected in any adult with FUO.
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Affiliation(s)
- Hao-Yuan Wang
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ching-Fen Yang
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Tzeon-Jye Chiou
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Transfusion Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jyh-Pyng Gau
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Po-Min Chen
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chang-Youh Tsai
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hui-Chi Hsu
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Fu-der Wang
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Infectious Disease, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jin-Hwang Liu
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Liang-Tsai Hsiao
- Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Kaewboonchoo O, Sung FC, Lin CL, Hsu HC, Kuo CT. Hip fracture risk in patients with burn injury: a retrospective cohort study in Taiwan. Osteoporos Int 2017; 28:3415-3420. [PMID: 28875313 DOI: 10.1007/s00198-017-4209-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 08/22/2017] [Indexed: 11/25/2022]
Abstract
UNLABELLED This work aimed to evaluate the hip fracture risk for patients with burn injury. A total of 16,430 patients with burn injury had an adjusted hazard ratio of 1.54 to encounter a hip fracture, compared with controls without the injury. These results encourage future studies focusing on mechanisms leading to fracture associated with burn injury. INTRODUCTION The relationship between burn injury and hip fracture risk is unclear. We conducted a retrospective cohort study to investigate this relationship. METHODS From insurance data of Taiwan, we identified a cohort with 16,430 burn patients in 2000-2010 and a comparison cohort of 65,716 persons without the history of burn, frequency matched by sex, age, and diagnosis date. Both cohorts were followed up to the end of 2011 to evaluate the risk of hip fracture. RESULTS Patients with burn injury were 1.62-fold more likely than comparisons to encounter a hip fracture (6.95 vs. 4.28 per 1000 person-years), with an adjusted hazard ratio (aHR) of 1.54 (95% confidence interval (CI) = 1.40-1.68). The fracture incidence increased with age and is slightly greater for women than for men in both cohorts. The fracture risk was greater for patients with burn in the eyes, face, and head with an incidence of 7.14 per 1000 person-years, or an aHR of 2.09 (95% CI = 1.53, 2.86). Diabetes and osteoporosis were also associated with an increased hip fracture risk. CONCLUSION Burn injury is associated with an increased risk of hip fracture. Diabetes and osteoporosis are associated with an enhanced risk.
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Affiliation(s)
- O Kaewboonchoo
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Khet Ratchathewi, Thailand
| | - F C Sung
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Khet Ratchathewi, Thailand
- Department of Health Services Administration, China Medical University College of Public Health, Taichung, Taiwan
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - C L Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - H C Hsu
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - C T Kuo
- Department of Public Health Nursing, Mahidol University Faculty of Public Health, Khet Ratchathewi, Thailand.
- Department of Public Health, China Medical University College of Public Health, 91 Hseuh Shih Road, Taichung, 404, Taiwan.
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10
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Abstract
The modulation instability (MI) is a universal mechanism that is responsible for the disintegration of weakly nonlinear narrow-banded wave fields and the emergence of localized extreme events in dispersive media. The instability dynamics is naturally triggered, when unstable energy sidebands located around the main energy peak are excited and then follow an exponential growth law. As a consequence of four wave mixing effect, these primary sidebands generate an infinite number of additional sidebands, forming a triangular sideband cascade. After saturation, it is expected that the system experiences a return to initial conditions followed by a spectral recurrence dynamics. Much complex nonlinear wave field motion is expected, when the secondary or successive sideband pair that is created is also located in the finite instability gain range around the main carrier frequency peak. This latter process is referred to as higher-order MI. We report a numerical and experimental study that confirms observation of higher-order MI dynamics in water waves. Furthermore, we show that the presence of weak dissipation may counterintuitively enhance wave focusing in the second recurrent cycle of wave amplification. The interdisciplinary weakly nonlinear approach in addressing the evolution of unstable nonlinear waves dynamics may find significant resonance in other nonlinear dispersive media in physics, such as optics, solids, superfluids, and plasma.
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Affiliation(s)
- O Kimmoun
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - H C Hsu
- Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - B Kibler
- Laboratoire Interdisciplinaire Carnot de Bourgogne-UMR 6303 CNRS/Université Bourgogne Franche-Comté, 21078 Dijon, France
| | - A Chabchoub
- Department of Mechanical Engineering, Aalto University, 02150 Espoo, Finland
- School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
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11
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Hsu HC, Lee SY, Lai CM, Tsai WL, Chiu HT. 0820 LINKING STRESS TO PARENTING COMPETENCE AMONG TAIWANESE MOTHERS OF PRETERM INFANTS: THE MEDIATING ROLE OF SLEEP. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.819] [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: 11/12/2022] Open
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12
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Hsu HC, Lee SY. 0981 SLEEP AND PSYCHOLOGICAL DISTRESS: A CROSS-CULTURAL ANALYSIS COMPARING AMERICAN AND TAIWANESE MOTHERS OF LOW-BIRTH WEIGHT PRETERM INFANTS. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.980] [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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13
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Hsu HC, Enosawa S, Yamazaki T, Tohyama S, Fujita J, Fukuda K, Kobayashi E. Enhancing Survival of Human Hepatocytes by Neonatal Thymectomy and Partial Hepatectomy in Micro-miniature Pigs. Transplant Proc 2017; 49:153-158. [PMID: 28104124 DOI: 10.1016/j.transproceed.2016.11.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND With the goal of in vivo cultivation of human hepatocytes that have not been sufficient in full differentiation in vitro, the advantage of neonatal thymectomy was verified on expansion of xenogeneic human hepatocyte in the micro-miniature pig (MMP). METHODS The thymus was excised immediately after the birth of the MMPs via cesarean section. Newborns were fed by artificial feeding under specific pathogen-free conditions. The thymectomized and nonthymectomized littermates were transplanted with human hepatocytes via a portal vein with or without partial hepatectomy at the MMP adult stage. RESULTS The growth of thymectomized MMPs and the sham operated littermates was not significantly different; the former weighed 1.98 ± 0.30 kg (average ± standard deviation, n = 4) and the latter weighed 2.28 ± 0.39 kg (n = 4) at 1 month of age, and 17.48 ± 1.92 kg and 16.75 ± 2.68 kg at 12 months of age. Blood thymosin α1 concentrations in the thymectomy group were significantly lower than in the control group (0.22 ± 0.05 ng/mL vs 0.46 ± 0.16 ng/mL; n = 4, 12 months old, P = .029). After human hepatocyte transplantation, human albumin levels were detectable on day 28 in the peripheral blood of the thymectomy plus hepatectomy group (14.3 ± 4.9 ng/mL [± range, n = 2]) but were not detectable even on day 21 in the control group. CONCLUSIONS Neonatal thymectomy was successfully achieved in infantile MMPs born via cesarean section. These pigs were considered to be an ideal in vivo bioreactor for human hepatocytes.
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Affiliation(s)
- H C Hsu
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan; Division of Advanced Medical Sciences, National Center for Child Health and Development, Tokyo, Japan
| | - S Enosawa
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan; Division of Advanced Medical Sciences, National Center for Child Health and Development, Tokyo, Japan
| | - T Yamazaki
- Division of Advanced Medical Sciences, National Center for Child Health and Development, Tokyo, Japan; Kohno Clinical Medicine Research Institute, Tokyo, Japan
| | - S Tohyama
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - J Fujita
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - K Fukuda
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - E Kobayashi
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan.
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14
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Yang LY, Huang CC, Hsu HC, Yang YY, Chang CC, Chuang CL, Lee WS, Liang JF, Cheng HM, Huang CC, Lee FY, Ho ST, Kirby R. Voluntary attendance of small-group brainstorming tutoring courses intensify new clerk's "excellence in clinical care": a pilot study. BMC Med Educ 2017; 17:2. [PMID: 28056969 PMCID: PMC5217545 DOI: 10.1186/s12909-016-0843-6] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 12/14/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Clerkship provides a unique way of transferring the knowledge and skills gathered during medical school's curriculum into real-ward clinical care environment. The annual program evaluation has indicated that the training of clerks in diagnostic and clinical reasoning skills needed to be enhanced. Recently, "clinical excellence" program have been promoted in our institution to augment the excellence in clinical care of new clerks. Current study aims to evaluate whether this pilot program improve the "clinical excellence" of new clerks. METHODS In a pilot study, groups of new clerks in years 2013 and 2014 voluntarily attended either a small-group brainstorming course or a didactic classroom tutoring courses as part of their 3-month internal medicine clinical rotation block. A third group of new clerks did not join either of the above courses and this group served as the control group. Pre-block/post-block self-assessment and post-block 5-station mini-Objective Subjective Clinical Examinations (OSCEs) were used to evaluate the effectiveness of these two additional courses that trained diagnostic and clinical reasoning skills. RESULTS Overtime, the percentages of new clerks that attended voluntarily either the small-group brainstorming or classroom tutoring courses were increased. Higher post-block self-assessed diagnostic and clinical reasoning skill scores were found among individuals who attended the small-group brainstorming courses compared to either the didactic group or the control group. In a corresponding manner, the small-group brainstorming group obtained higher summary OSCEdiag and OSCEreason scores than either the didactic group or control group. For all basic images/laboratory OSCE stations, the individual diagnostic skill (OSCEdiag) scores of the small-group brainstorming group were higher than those of the didactic group. By way of contrast, only the clinical reasoning skill (OSCEreason) scores of the basic electrocardiogram and complete blood count + biochemistry OSCE station of thesmall-group brainstorming group were higher than those of the didactic group. Among the small-group brainstorming group, clerks with higher cumulative learning hours (>30-h) had significant higher OSCEdiag and OSCEreason scores (>400) than those with less cumulative learning hours. CONCLUSION Our pilot study provides a successful example of the use of a small-group tutoring courses for augmenting the diagnostic and clinical reasoning skills of new clerks. The positive results obtained during the initial 2-year long pilot "clinical excellence" program have encouraged the formal implementation of this course as part of the clerkship curriculum.
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Affiliation(s)
- Ling-Yu Yang
- Department of Medical Education, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Chang Huang
- Division of Clinical Skills Training, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hui-Chi Hsu
- Department of Medicine, Division of General Medicine, Yilan, Taiwan
- Camillians Saint Mary's Hospital Luodong, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ying-Ying Yang
- Division of Clinical Skills Training, Yilan, Taiwan.
- Department of Medicine, Division of General Medicine, Yilan, Taiwan.
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Ching-Chi Chang
- Department of Medicine, Division of General Medicine, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chiao-Lin Chuang
- Department of Medicine, Division of General Medicine, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wei-Shin Lee
- Department of Medicine, Division of General Medicine, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jen-Feng Liang
- Department of Medical Education, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hao Min Cheng
- Department of Medical Education, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chin-Chou Huang
- Division of Clinical Skills Training, Yilan, Taiwan
- Department of Medicine, Division of General Medicine, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Fa-Yauh Lee
- Taipei Veterans General Hospital, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Shung-Tai Ho
- Taipei Veterans General Hospital, Yilan, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ralph Kirby
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
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15
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Wang HY, Yang CF, Chiou TJ, Yang SH, Gau JP, Yu YB, Chen PM, Hsu HC, Fung CP, Lin HY, Tzeng CH, Liu JH, Hsiao LT. Risk of hemophagocytic lymphohistiocytosis in adults with fevers of unknown origin: the clinical utility of a new scoring system on early detection. Hematol Oncol 2016; 35:835-844. [DOI: 10.1002/hon.2333] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/06/2016] [Accepted: 06/24/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Hao-Yuan Wang
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Ching-Fen Yang
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Department of Pathology and Laboratory Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - Tzeon-Jye Chiou
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Division of Transfusion Medicine, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - Sheng-Hsiang Yang
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Division of Oncology and Hematology, Department of Medicine; National Yang-Ming University Hospital; Yilan Taiwan
| | - Jyh-Pyng Gau
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Yuan-Bin Yu
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Po-Min Chen
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Hui-Chi Hsu
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Division of General Medicine, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - Chang-Phone Fung
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Division of Infectious Disease, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - Hsiao-Yi Lin
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
| | - Cheng-Hwai Tzeng
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Jin-Hwang Liu
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Liang-Tsai Hsiao
- Division of Hematology and Oncology, Department of Medicine; Taipei Veterans General Hospital; Taipei Taiwan
- Faculty of Medicine, School of Medicine; National Yang-Ming University; Taipei Taiwan
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16
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Kimmoun O, Hsu HC, Branger H, Li MS, Chen YY, Kharif C, Onorato M, Kelleher EJR, Kibler B, Akhmediev N, Chabchoub A. Modulation Instability and Phase-Shifted Fermi-Pasta-Ulam Recurrence. Sci Rep 2016; 6:28516. [PMID: 27436005 PMCID: PMC4951648 DOI: 10.1038/srep28516] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 03/11/2016] [Accepted: 05/20/2016] [Indexed: 11/09/2022] Open
Abstract
Instabilities are common phenomena frequently observed in nature, sometimes leading to unexpected catastrophes and disasters in seemingly normal conditions. One prominent form of instability in a distributed system is its response to a harmonic modulation. Such instability has special names in various branches of physics and is generally known as modulation instability (MI). The MI leads to a growth-decay cycle of unstable waves and is therefore related to Fermi-Pasta-Ulam (FPU) recurrence since breather solutions of the nonlinear Schrödinger equation (NLSE) are known to accurately describe growth and decay of modulationally unstable waves in conservative systems. Here, we report theoretical, numerical and experimental evidence of the effect of dissipation on FPU cycles in a super wave tank, namely their shift in a determined order. In showing that ideal NLSE breather solutions can describe such dissipative nonlinear dynamics, our results may impact the interpretation of a wide range of new physics scenarios.
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Affiliation(s)
- O Kimmoun
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - H C Hsu
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - H Branger
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M S Li
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - Y Y Chen
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - C Kharif
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M Onorato
- Dipartimento di Fisica Generale, Universita degli Studi di Torino, Torino, Italy
| | - E J R Kelleher
- Femtosecond Optics Group, Department of Physics, Imperial College London, London, UK
| | - B Kibler
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS UBFC, Dijon, France
| | - N Akhmediev
- Optical Sciences Group, Research School of Physics and Engineering, Institute of Advanced Studies, The Australian National University, Canberra ACT 020, Australia
| | - A Chabchoub
- Department of Ocean Technology Policy and Environment, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8563, Japan.,Department of Mechanical Engineering, Aalto University, 02150 Espoo, Finland
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17
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Hsu HC, Tan CD, Chang CW, Chu CW, Chiu YC, Pan CJ, Huang HM. Evaluation of nasal patency by visual analogue scale/nasal obstruction symptom evaluation questionnaires and anterior active rhinomanometry after septoplasty: a retrospective one-year follow-up cohort study. Clin Otolaryngol 2016; 42:53-59. [PMID: 27102375 DOI: 10.1111/coa.12662] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess the efficacy of septoplasty and the correlation between the subjective evaluations of a visual analogue scale (VAS) and the Nasal Obstruction Symptom Evaluation (NOSE) questionnaire and active anterior rhinomanometry of the nasal airway after septoplasty. DESIGN A retrospective, individual cohort study. SETTING Ear, Nose and Throat Department, Taipei City Hospital, Taipei, Taiwan. PARTICIPANTS Fifty patients with chronic nasal obstruction were enrolled in the study. All 50 patients underwent septoplasty because of nasal septal deviation. Another 28 patients without nasal symptoms served as controls. MAIN OUTCOME MEASURES VAS, NOSE and active anterior rhinomanometry were used to measure the sensation of nasal obstruction. All measurements were performed in both groups preoperatively and then repeated on three postoperative visits (3, 6 and 12 months). RESULTS The mean VAS score, NOSE score and the nasal resistance in the narrow side of the nose in the study group showed reduced symptoms at 3, 6 and 12 months postoperatively compared with the respective preoperative measurements (P < 0.001, all). The VAS and NOSE scores did not significantly correlate with total nasal resistance preoperatively or postoperatively. The VAS and nasal resistance in the obstructed nasal cavity correlated significantly preoperatively (P < 0.05), but not postoperatively. CONCLUSIONS The subjective and objective symptoms of nasal obstruction had improved 1 year after septoplasty. A significant correlation between VAS scores and nasal resistance in the narrow side of the nose was found before surgery. The subjective and objective measurements of nasal obstruction lacked significant correlation postoperatively.
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Affiliation(s)
- H C Hsu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C D Tan
- Department of Otolaryngology, School of Medicine, College of Medicine, Taiwan National University, Taipei, Taiwan
| | - C W Chang
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C W Chu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - Y C Chiu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C J Pan
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - H M Huang
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan.,Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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18
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Wu CY, Chiou TJ, Liu CY, Lin FC, Lin JS, Hung MH, Hsiao LT, Yen CC, Gau JP, Yen HJ, Hung GY, Hsu HC, Tzeng CH, Liu JH, Yu YB. Decision-tree algorithm for optimized hematopoietic progenitor cell-based predictions in peripheral blood stem cell mobilization. Transfusion 2016; 56:2042-51. [PMID: 27232662 DOI: 10.1111/trf.13666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 04/02/2016] [Accepted: 04/07/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Enumerating hematopoietic progenitor cells (HPCs) by using an automated hematology analyzer is a rapid, inexpensive, and simple method for predicting a successful harvest compared with enumerating circulating CD34+ cells. However, the optimal HPC cutoff count and the indicating factors to be considered for improved predicting have not yet been determined. STUDY DESIGN AND METHODS Between 2007 and 2012, a total of 189 consecutive patients who proceeded to peripheral blood stem cell (PBSC) harvesting were retrospectively recruited. Baseline characteristics were analyzed to identify the risk factors for a failed harvest, which were defined as less than 2 × 10(6) CD34+ cells/kg. Variables identified by multivariate logistic regression and correlation analysis for predicting a successful harvest were subjected to classification and regression tree (CART) analysis. RESULTS PBSCs were successfully harvested in 154 (81.5%) patients. An age of at least 60 years, a diagnosis of a solid tumor, at least five prior chemotherapy cycles, prior radiotherapy, and mobilization with granulocyte-colony-stimulating factor alone or high-dose cyclophosphamide were independent baseline predictors of poor mobilization. In CART analysis, patients with zero to two host risk factors and either higher HPC (≥28 × 10(6) /L) or mononuclear cell (MNC; ≥3.5 × 10(9) /L) counts were categorized as good mobilizers and their harvest success rate was 92.3%. By contrast, 30.3% of harvests were adequate in the patients with three to five host risk factors and lower HPC and MNC counts. CONCLUSION A CART algorithm incorporating host predictors and HPC and MNC counts improves predictions in a successful harvest and might reduce the necessity of monitoring peripheral CD34+ cells.
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Affiliation(s)
- Chia-Yun Wu
- Division of Hematology, Department of Medicine.,Division of Medical Oncology, Department of Oncology.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Tzeon-Jye Chiou
- Division of Hematology, Department of Medicine.,Division of Transfusion Medicine, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chun-Yu Liu
- Division of Medical Oncology, Department of Oncology.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Feng-Chang Lin
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jeong-Shi Lin
- Division of Hematology, Department of Medicine.,Division of Transfusion Medicine, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Man-Hsin Hung
- Division of Medical Oncology, Department of Oncology.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Liang-Tsai Hsiao
- Division of Hematology, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chueh-Chuan Yen
- Division of Medical Oncology, Department of Oncology.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jyh-Pyng Gau
- Division of Hematology, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hsiu-Ju Yen
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Giun-Yi Hung
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hui-Chi Hsu
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Medicine, Saint Mary's Hospital Luodong, Yilan, Taiwan
| | - Cheng-Hwai Tzeng
- Division of Hematology, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jing-Hwang Liu
- Division of Hematology, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yuan-Bin Yu
- Division of Hematology, Department of Medicine.,Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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19
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Fan WC, Huang CC, Yang YY, Lin A, Lee KC, Hsieh YC, Fung CP, Hsu HC, Hou MC, Lin HC. Serum pentraxin-3 and tumor necrosis factor-like weak inducer of apoptosis (TWEAK) predict severity of infections in acute decompensated cirrhotic patients. J Microbiol Immunol Infect 2016; 50:905-914. [PMID: 26872435 DOI: 10.1016/j.jmii.2015.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 12/20/2015] [Accepted: 12/29/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND Pentraxin-3 (PTX3) and soluble tumor necrosis factor (TNF)-like weak inducer of apoptosis (sTWEAK) are new candidate prognostic markers for comorbidities and mortality in various inflammatory diseases. Acute decompensation of cirrhosis is characterized by acute exacerbation of chronic systemic inflammation. Recently, increased circulating PTX3 levels have been reported in nonalcoholic steatohepatitis patients and positively correlated with disease severity. This study aims to explore serum PTX3/sTWEAK levels and their relationship with clinical outcomes in cirrhotic patients with acute decompensation. METHODS We analyzed serum PTX3/sTWEAK levels in relation to inhospital and 3-month new clinical events and survivals in cirrhotic patients with acute decompensation. RESULTS During admission, serum PTX3/sTWEAK levels were significantly higher in acute decompensated cirrhotic patients than controls and positively correlated with protein-energy wasting (PEW), new infections, long hospital stays, high medical costs, and high mortality. During a 3-month follow-up, acute decompensated cirrhotic patients with high serum PTX3/sTWEAK levels had more episodes of unplanned readmission and high 3-month mortality. On multivariate analysis, high PTX3/sTWEAK levels and PEW were independent risk factors for high mortality. CONCLUSION High serum PTX3/sTWEAK levels and PEW are common in cirrhotic patients with acute decompensation. As compared with low serum PTX3 and sTWEAK cases, cirrhotic patients with high serum PTX3/sTWEAK levels a have higher probability of new severe infections, severe sepsis, septic shock, type 1 hepatorenal syndrome, in-hospital, and 3-month follow-up mortalities. Therefore, high serum PTX3/sTWEAK levels on hospital admission predict disease severity and case fatality in cirrhotic patients with acute decompensation.
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Affiliation(s)
- Wen-Chien Fan
- Division of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Chia-Chang Huang
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ying-Ying Yang
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan.
| | - Alan Lin
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Institute of Oral Biology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Kuei-Chuan Lee
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yun-Cheng Hsieh
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chang-Phone Fung
- Division of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Hui-Chi Hsu
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Chih Hou
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Han-Chieh Lin
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
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Chen PC, Chien KL, Su TC, Jeng JS, Hsu HC, Lee YT. Carotid Atherosclerosis Progression and Risk of Cardiovascular Events in a Community in Taiwan. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.109] [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: 11/12/2022] Open
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21
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Lin PL, Huang PW, Huang PY, Hsu HC. Alveolar bone-loss area localization in periodontitis radiographs based on threshold segmentation with a hybrid feature fused of intensity and the H-value of fractional Brownian motion model. Comput Methods Programs Biomed 2015; 121:117-126. [PMID: 26078207 DOI: 10.1016/j.cmpb.2015.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 05/11/2015] [Accepted: 05/19/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis involves progressive loss of alveolar bone around the teeth. Hence, automatic alveolar bone-loss (ABL) measurement in periapical radiographs can assist dentists in diagnosing such disease. In this paper, we propose an effective method for ABL area localization and denote it as ABLIfBm. METHOD ABLIfBm is a threshold segmentation method that uses a hybrid feature fused of both intensity and texture measured by the H-value of fractional Brownian motion (fBm) model, where the H-value is the Hurst coefficient in the expectation function of a fBm curve (intensity change) and is directly related to the value of fractal dimension. Adopting leave-one-out cross validation training and testing mechanism, ABLIfBm trains weights for both features using Bayesian classifier and transforms the radiograph image into a feature image obtained from a weighted average of both features. Finally, by Otsu's thresholding, it segments the feature image into normal and bone-loss regions. RESULTS Experimental results on 31 periodontitis radiograph images in terms of mean true positive fraction and false positive fraction are about 92.5% and 14.0%, respectively, where the ground truth is provided by a dentist. The results also demonstrate that ABLIfBm outperforms (a) the threshold segmentation method using either feature alone or a weighted average of the same two features but with weights trained differently; (b) a level set segmentation method presented earlier in literature; and (c) segmentation methods based on Bayesian, K-NN, or SVM classifier using the same two features. CONCLUSION Our results suggest that the proposed method can effectively localize alveolar bone-loss areas in periodontitis radiograph images and hence would be useful for dentists in evaluating degree of bone-loss for periodontitis patients.
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Affiliation(s)
- P L Lin
- Department of Computer Science and Information Engineering, Providence University, Shalu, Taichung 43301, Taiwan.
| | - P W Huang
- Department of Computer Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
| | - P Y Huang
- Department of Computer Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
| | - H C Hsu
- College of Oral Medicine, Chung Shan Medical University and Chung Shan Medical University Hospital, Taichung 40201, Taiwan.
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Hsu HC, Lee FY, Yang YY, Tsao YP, Lee WS, Chuang CL, Chang CC, Huang CC, Huang CC, Ho ST. Self- and rater-assessed effectiveness of "thinking-aloud" and "regular" morning report to intensify young physicians' clinical skills. J Chin Med Assoc 2015; 78:545-54. [PMID: 25982162 DOI: 10.1016/j.jcma.2015.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/16/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND This study compared the effects of the "thinking aloud" (TA) morning report (MR), which is characterized by sequential and interactive case discussion by all participants, with "regular" MR for clinical skill training of young physicians. METHODS Between February 2011 and February 2014, young physicians [including postgraduate year-1 (PGY1) residents, interns, and clerks) from our hospital were sequentially enrolled and followed for 3 months. The self- and rater-assessed educational values of two MR models for building up clinical skills of young physicians were compared. RESULTS The junior (intern and clerk) attendees had higher self-assessed educational values scores and reported post-training application frequency of skills trained by TA MR compared with the senior (PGY1 resident) attendees. Higher average and percentage of increased overall rater-assessed OSCE scores were noted among the regular MR senior attendees and TA MR junior attendees than in their corresponding control groups (regular MR junior attendees and TA MR senior attendees). Interestingly, regular MRs provided additional beneficial effects for establishing the "professionalism, consulting skills and organization efficiency" aspects of clinical skills of senior/junior attendees. Moreover, senior and junior attendees benefited the most by participating in seven sessions of regular MR and TA MR each month, respectively. CONCLUSION TA MR effectively trains junior attendees in basic clinical skills, whereas regular MR enhances senior attendees' "work reports, professionalism, organizational efficiency, skills in dealing with controversial and professional issues." Undoubtedly, all elements of the two MR models should be integrated together to ensure patient safety and good discipline among young physicians.
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Affiliation(s)
- Hui-Chi Hsu
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Fa-Yauh Lee
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ying-Ying Yang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Clinical Skill Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
| | - Yen-Po Tsao
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Clinical Skill Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Wen-Shin Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chiao-Lin Chuang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ching-Chih Chang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chia-Chang Huang
- Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Clinical Skill Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chin-Chou Huang
- Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Division of Clinical Skill Training, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Shung-Tai Ho
- Division of Allergy-Immunology-Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
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Yang YY, Yang LY, Hsu HC, Huang CC, Huang CC, Kirby R, Cheng HM, Chang CC, Chuang CL, Liang JF, Lin CC, Lee WS, Ho ST, Lee FY. A model of four hierarchical levels to train Chinese residents' teaching skills for "practice-based learning and improvement" competency. Postgrad Med 2015; 127:744-51. [PMID: 26308795 DOI: 10.1080/00325481.2015.1080588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The current study focused on validating a protocol for training and auditing the resident's practice-based learning and improvement (PBLI) and quality improvement (QI) competencies for primary care. METHODS Twelve second-year (R2), 12 first-year (R1) and 12 postgraduate year-1 residents were enrolled into group A, B and C, respectively, as trainees. After three training protocols had been completed, a writing test, self-assessed questionnaire and mini-OSTE and end-of-rotation assessment were used in auditing the PBLI competency, performance and teaching ability of trainees. RESULTS Baseline expert-assessed PBLI and QI knowledge application tool writing scores were low for the R1 and R2 residents. After three training protocols, PBLI and QI proficiencies, performance and teaching abilities were improved to similar levels cross the three training levels of residents based on the expert-assessed writing test-audited assessments and on the faculty and standardized clerk-assessed end-of-rotation-/mini-OSTE-audited assessments. CONCLUSION The different four-level hierarchical protocols used to teach group A, B and C were equally beneficial and fitted their needs; namely the different levels of the trainees. Specifically, each level was able to augment their PBLI and QI proficiency. This educational intervention helps medical institutions to train residents as PBLI instructors.
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Affiliation(s)
- Ying-Ying Yang
- a 1 Division of Clinical Skills Training , Taipei, Taiwan
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Amloy S, Karlsson KF, Eriksson MO, Palisaitis J, Persson POÅ, Chen YT, Chen KH, Hsu HC, Hsiao CL, Chen LC, Holtz PO. Excitons and biexcitons in InGaN quantum dot like localization centers. Nanotechnology 2014; 25:495702. [PMID: 25410551 DOI: 10.1088/0957-4484/25/49/495702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Indium segregation in a narrow InGaN single quantum well creates quantum dot (QD) like exciton localization centers. Cross-section transmission electron microscopy reveals varying shapes and lateral sizes in the range ∼1-5 nm of the QD-like features, while scanning near field optical microscopy demonstrates a highly inhomogeneous spatial distribution of optically active individual localization centers. Microphotoluminescence spectroscopy confirms the spectrally inhomogeneous distribution of localization centers, in which the exciton and the biexciton related emissions from single centers of varying geometry could be identified by means of excitation power dependencies. Interestingly, the biexciton binding energy (E(b)xx) was found to vary from center to center, between 3 to -22 meV, in correlation with the exciton emission energy. Negative binding energies are only justified by a three-dimensional quantum confinement, which confirms QD-like properties of the localization centers. The observed energy correlation is proposed to be understood as variations of the lateral extension of the confinement potential, which would yield smaller values of E(b)xx for reduced lateral extension and higher exciton emission energy. The proposed relation between lateral extension and E(b)xx is further supported by the exciton and the biexciton recombination lifetimes of a single QD, which suggest a lateral extension of merely ∼3 nm for a QD with strongly negative E(b)xx = -15.5 meV.
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Affiliation(s)
- S Amloy
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden. Department of Physics, Faculty of Science, Thaksin University, Phattalung 93110, Thailand.
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Wang HY, Yang CF, Chiou TJ, Yang SH, Gau JP, Yu YB, Liu CY, Liu JH, Chen PM, Hsu HC, Fung CP, Tzeng CH, Hsiao LT. A "bone marrow score" for predicting hematological disease in immunocompetent patients with fevers of unknown origin. Medicine (Baltimore) 2014; 93:e243. [PMID: 25501092 PMCID: PMC4602808 DOI: 10.1097/md.0000000000000243] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Delayed diagnosis of hematological malignancies in immunocompetent patients with fever of unknown origin (FUO) remains an exhausting challenge for non-hematologist physicians. This retrospective cohort study aimed to establish a scoring system, "bone marrow (BM) score", to identify FUO patients who require early bone marrow biopsy (BMB) to diagnose hematological disease. Two cohorts, comprising 85 (training) and 20 (validation) eligible immunocompetent patients, with FUOs diagnosed between January 1, 2006 and July 31, 2013, underwent BMBs and were enrolled in the study. Demographic, laboratory, imaging, diagnostic, and outcome data were collected and retrospectively analyzed. Factors associated with hematological etiologies diagnosed using BMBs in the training cohort were identified and scored according to the relative hazards. These were further validated using the validation cohort. For the training cohort, 29 of 85 (34.1%) patients had hematological etiologies diagnosed using BMB. Seven factors significantly predicted the diagnostic yield of hematological diseases in the BM and were scored, with the 6 points for leucoerythroblastic changes in peripheral blood smears, 5.5 for elevated ferritin level (>1000 ng/mL), 4 for splenomegaly, 2 for thrombocytopenia, 1.5 for each of elevated lactate dehydrogenase levels and anemia, and 1 for neutropenia. When the cut-off value of the scoring system was set to 6, its sensitivity and specificity to diagnose hematological diseases in the BM of immunocompetent FUO patients were 93% and 58%, respectively. For the validation cohort, 7 of 20 (35%) patients had hematological disease, and all had BM scores higher than the cut-off, with the sensitivity and specificity at 100% and 77%, respectively. As immunocompetent FUO patients with hematological disease have poor prognoses, the "BM score" is valuable for non-hematologist physicians to identify immunocompetent FUO patients requiring early BMB.
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Affiliation(s)
- Hao-Yuan Wang
- From the Division of Hematology and Oncology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan (H-YW, J-PG, Y-BY, C-YL, J-HL, P-MC, H-CH, C-HT, L-TH); Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan (H-YW, C-FY, T-JC, S-HY, J-PG, Y-BY, C-YL, J-HL, P-MC, H-CH, C-PF, C-HT, L-TH); Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan (C-FY); Division of Transfusion Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan (T-JC); Division of Oncology and Hematology, Department of Medicine, National Yang-Ming University Hospital, Yilan, Taiwan (S-HY); Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan (H-CH); and Division of Infectious Disease, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan (C-PF)
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Tsai WH, Shih CH, Feng SY, Chang SC, Lin YC, Hsu HC. Role of CX3CL1 in the chemotactic migration of all-trans retinoic acid-treated acute promyelocytic leukemic cells toward apoptotic cells. J Chin Med Assoc 2014; 77:367-73. [PMID: 24908182 DOI: 10.1016/j.jcma.2014.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 10/30/2013] [Accepted: 01/15/2014] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Phagocytic clearance of apoptotic neutrophils by tissue macrophages is a crucial component in the resolution phase of acute inflammation. However, the number of tissue macrophages is low and not likely to cope satisfactorily with the excess number of dying neutrophils. Although recent studies have reported that neutrophils are able to engulf apoptotic neutrophils, the mechanisms by which living neutrophils are attracted to apoptotic neutrophils are poorly defined. Increased amounts of CX3CL1 and microparticles (MPs) are rapidly released by apoptotic cells, and are involved in the chemoattraction of mononuclear phagocytes toward apoptotic cells. The current study investigated the role of CX3CL1 in the chemoattraction of all-trans retinoic acid (ATRA)-treated NB4 (ATRA-NB4) cells toward apoptotic cells. METHODS Conditioning medium and MPs were harvested from apoptotic ATRA-NB4 cell cultures to determine their effects on living ATRA-NB4 cells by transmigration assay and adhesion assay. The cytokine levels in the conditioning medium were determined by enzyme-linked immunosorbent assay. Expression of CX3CR1 (a receptor of CX3CL1) on ATRA-NB4 cells was determined by flow cytometric analysis. RESULTS ATRA-NB4 cells transmigrated toward the apoptotic ATRA-NB4 cells, and this chemoattraction was partially inhibited when the CX3CR1 on ATRA-NB4 cells was blocked by its specific antibody. Both exogenous CX3CL1 and MPs released by apoptotic ATRA-NB4 cells were able to enhance the chemoattraction of ATRA-NB4 cells toward apoptotic cells or the adhesion of ATRA-NB4 cells to endothelial cells. CX3CL1 was expressed on the surface of MPs, and blocking this CX3CL1 with its specific antibody was able to partially inhibit the chemoattractive property of MPs. CONCLUSION CX3CL1, in either the free or MP form, is released rapidly by apoptotic ATRA-NB4 cells after induction of apoptosis to mediate the chemoattraction of living ATRA-NB4 cells toward apoptotic cells.
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Affiliation(s)
- Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan, ROC
| | - Chung-Hung Shih
- Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan, ROC
| | - Shan-Yu Feng
- Department of Physiology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Shao-Chi Chang
- Department of Physiology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yu-Chieh Lin
- Department of Physiology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Hui-Chi Hsu
- Department of Physiology, National Yang-Ming University, Taipei, Taiwan, ROC; Department of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
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Tsai WH, Hsu HC, Shih CH. Increased risks of endotracheal tube cuff colonization after prolonged intubation. CHINESE J PHYSIOL 2014; 57:152-7. [PMID: 24826783 DOI: 10.4077/cjp.2014.bac217] [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: 11/24/2022] Open
Abstract
Mechanical ventilation using endotracheal tube (ETT) intubation is crucial in saving life but may also cause ventilator-associated pneumonia resulting in morbidity and mortality. The purpose of this study was to examine the effects of intubation duration on pathogen colonization rates of ETT cuff region, and its association with the subsequent re-intubation and tracheostomy. We enrolled 92 patients who were successfully weaned from ventilator and were extubated within 20 days of intubation duration. Patients were divided into Group I and II based on intubation for 1-9 days and 10-20 days, respectively. Pathogen colonization over ETT cuff region and extra-cuff region (including sputum and ETT aspirates) were assessed. As compared to Group I patients, Group II patients had a significant higher pathogen colonization rate (100% vs. 69.2%; P < 0.001) in the ETT cuff samples, but not in the extra-cuff samples (92.6% vs. 84.8%; P = 0.442). Further studies demonstrated that there was no difference between Group I and II patients in the percentages of patients with the same pathogen over both the cuff and extra-cuff samples (35.5% vs. 30.8%; P = 0.925), suggesting that the increased pathogen colonization rate over the ETT cuff region was least likely from the extra-cuff region. In addition, the results showed that longer intubation was also associated with increased tracheostomy rate from 9.3% to 28.9% for Group I and Group II respectively (P = 0.025). We conclude that longer intubation has a higher pathogen colonization rate over the ETT cuff region in patients receiving mechanical ventilation support; longer intubation also increases the trend of receiving re-intubation and tracheostomy. Our findings indicate that it is crucial to remove ETT as soon as possible and perform pathogen culture over the ETT cuff regions immediately after extubation.
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Affiliation(s)
- Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan, Republic of China
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Tsai WH, Shih CH, Feng SY, Li IT, Chang SC, Lin YC, Hsu HC. CX3CL1(+) microparticles mediate the chemoattraction of alveolar macrophages toward apoptotic acute promyelocytic leukemic cells. Cell Physiol Biochem 2014; 33:594-604. [PMID: 24603149 DOI: 10.1159/000358637] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS During the resolution phase of inflammation, release of "find-me" signals by apoptotic cells is crucial in the chemoattraction of macrophages toward apoptotic cells for subsequent phagocytosis, in which microparticles derived from apoptotic cells (apo-MPs) are involved. A recent study reports that CX3CL1 is released from apoptotic cells to stimulate macrophages chemotaxis. In this study, we investigated the role of CX3CL1 in the apo-MPs in the cell-cell interaction between alveolar macrophage NR8383 cells and apoptotic all-trans retinoic acid-treated NB4 (ATRA-NB4) cells. METHODS/RESULTS Apoptotic ATRA-NB4 cells and their conditioning medium (CM) enhanced the chemoattraction of NR8383 cells as well as their phagocytosis activity in engulfing apoptotic ATRA-NB4 cells. The levels of CX3CL1(+) apo-MPs and CX3CL1 were rapidly elevated in the CM of ATRA-NB4 cell culture after induction of apoptosis. Both exogenous CX3CL1 and apo-MPs enhanced the transmigration of NR8383 cells toward apoptotic ATRA-NB4 cells. This pro-transmigratory activity was able to be partially inhibited either by blocking the CX3CR1 (CX3CL1 receptor) of NR8383 cells with its specific antibody or by blocking the surface CX3CL1 of apo-MPs with its specific antibody before incubating these apo-MPs with NR8383 cells. CONCLUSION CX3CL1(+) apo-MPs released by apoptotic cells mediate the chemotactic transmigration of alveolar macrophages.
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Affiliation(s)
- Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan
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Lin PL, Huang PY, Huang PW, Hsu HC, Chen CC. Teeth segmentation of dental periapical radiographs based on local singularity analysis. Comput Methods Programs Biomed 2014; 113:433-445. [PMID: 24252317 DOI: 10.1016/j.cmpb.2013.10.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/12/2013] [Accepted: 10/22/2013] [Indexed: 06/02/2023]
Abstract
Teeth segmentation for periapical raidographs is one of the most critical tasks for effective periapical lesion or periodontitis detection, as both types of anomalies usually occur around tooth boundaries and dental radiographs are often subject to noise, low contrast, and uneven illumination. In this paper, we propose an effective scheme to segment each tooth in periapical radiographs. The method consists of four stages: image enhancement using adaptive power law transformation, local singularity analysis using Hölder exponent, tooth recognition using Otsu's thresholding and connected component analysis, and tooth delineation using snake boundary tracking and morphological operations. Experimental results of 28 periapical radiographs containing 106 teeth in total and 75 useful for dental examination demonstrate that 105 teeth are successfully isolated and segmented, and the overall mean segmentation accuracy of all 75 useful teeth in terms of (TP, FP) is (0.8959, 0.0093) with standard deviation (0.0737, 0.0096), respectively.
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Affiliation(s)
- P L Lin
- Department of Computer Science and Information Engineering, Providence University, Shalu, Taichung 43301, Taiwan.
| | - P Y Huang
- Department of Computer Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
| | - P W Huang
- Department of Computer Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
| | - H C Hsu
- College of Oral Medicine, Chung Shan Medical University and Chung Shan Medical University Hospital, Taichung 40201, Taiwan.
| | - C C Chen
- College of Oral Medicine, Chung Shan Medical University and Chung Shan Medical University Hospital, Taichung 40201, Taiwan.
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Tsai WH, Shih CH, Yu YB, Hsu HC. Plasma levels in sepsis patients of annexin A1, lipoxin A4, macrophage inflammatory protein-3a, and neutrophil gelatinase-associated lipocalin. J Chin Med Assoc 2013; 76:486-90. [PMID: 23769883 DOI: 10.1016/j.jcma.2013.05.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [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: 12/12/2012] [Accepted: 01/31/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The relationship between the various cytokine responses that occur during sepsis remains controversial. Emerging evidence indicates that the proinflammatory and anti-inflammatory responses are regulated simultaneously from the beginning of sepsis. However, the roles of the novel anti-inflammatory mediators annexin (Anx)A1 and lipoxin (LX)A4 and the proinflammatory cytokines neutrophil gelatinase-associated lipocalin (NGAL) and macrophage inflammatory protein (MIP)-3a have been studied. METHODS In this study, the plasma levels of AnxA1, LXA4, NGAL, MIP-3a, interleukin (IL)-8 and IL-6 in patients with sepsis were determined on admission to the intensive care unit. The patients were classified into survivors and non-survivors based on their outcome on day 28. RESULTS AnxA1 and LXA4 levels were decreased in sepsis patients compared with control patients, whereas the levels of the proinflammatory cytokines MIP-3a, NGAL, IL-8, and IL-6 were elevated. Furthermore, a significantly higher level of MIP-3a was detected in nonsurviving patients compared with surviving patients (p < 0.05), whereas there were no significant differences between these two groups for the levels of the other mediators. Correlation analysis demonstrated that only NGAL level was closely correlated with the level of IL-6. Univariate analysis indicated that the levels of MIP-3a and IL-8 were independent factors associated with patient survival, but this was not confirmed by the multivariate analysis. CONCLUSION AnxA1 and LXA4 plasma levels were found to be decreased in sepsis patients, whereas the levels of MIP-3a and NGAL were found to be elevated. This warrants further study in order to determine the clinical implications of these changes.
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Affiliation(s)
- Wen-Hui Tsai
- Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan, ROC
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Hsu HC, Matsuno N, Machida N, Enosawa S. Improvement of hepatocyte recovery from rat liver subjected to 1-hour warm ischemic injury by using citrate phosphate dextrose added to euro-collins perfusion solution. Transplant Proc 2013; 45:1700-3. [PMID: 23769027 DOI: 10.1016/j.transproceed.2013.02.036] [Citation(s) in RCA: 2] [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] [Received: 12/14/2012] [Revised: 01/27/2013] [Accepted: 02/06/2013] [Indexed: 11/30/2022]
Abstract
Warm ischemia (WI)-related injury interferes with recovery of primary hepatocyte after collagenase digestion of surgically resected or non-heart-beating donor livers as human cell sources. We speculated that digestion is impaired due to reduced microcirculation, caused by microembolism after WI. We sought to improve hepatocyte recovery after WI using a rat model. Anesthetized 9-week-old male Sprague-Dawley rats underwent a midline abdominal incision to insert a 22-gauge cannula into the portal vein. WI was initiated by ligating both the cannula and the hepatic artery. We compared Euro-Collins (EC) perfusion solution with 2 anticoagulants-heparin or citrate phosphate dextrose (CPD)-versus ethylene glycol tetraacetic acid (EGTA) combined with Ca(2+)- and Mg(2+)-free Hank's solution (CM-free Hank's solution). Use of CM-free Hank's solution yielded only 0.75 ± 0.15 × 10(8) and 0.82 ± 0.20 × 10(8) cells at 30 and 60 minutes WI respectively. However, CPD, but not heparin, added to the EC solution produced the best cell recovery (CPD: 2.15 ± 0.38 × 10(8); heparin: 1.63 ± 0.31 × 10(8)). During macroscopic observation, CPD added to EC solution also demonstrated best blood flushing. CPD added to EC solution achieved greater hepatocyte recovery than CM-free Hank's solution by restoring microcirculation during flushing of blood from liver tissue subjected to WI.
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Affiliation(s)
- H C Hsu
- Clinical Research Center, National Center for Child Health and Development, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Lu HJ, Huang YC, Liu CY, Hung MH, Hu MH, Wu CY, Hong YC, Hsiao LT, Gau JP, Liu JH, Hsu HC, Chiou TJ, Tzeng CH, Yu YB. Diminishing prognostic role of preexisting diabetes mellitus for patients with diffuse large B-cell lymphoma in the rituximab era. Ann Hematol 2013; 92:1495-501. [DOI: 10.1007/s00277-013-1789-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Accepted: 04/30/2013] [Indexed: 01/05/2023]
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Lee JW, Yoon SS, Shen ZX, Ganser A, Hsu HC, El-Ali A, Habr D, Martin N, Porter JB. Hematologic responses in patients with aplastic anemia treated with deferasirox: a post hoc analysis from the EPIC study. Haematologica 2013; 98:1045-8. [PMID: 23585526 DOI: 10.3324/haematol.2012.077669] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Reports are emerging of hematologic responses associated with iron chelation therapy; however, studies are limited in aplastic anemia patients. Deferasirox reduced iron overload in aplastic anemia patients enrolled in the EPIC (Evaluation of Patients' Iron Chelation with Exjade(®)) study (n=116). A post hoc analysis of hematologic responses was conducted on 72 patients with evaluable hematologic parameters (according to UK guideline criteria), 24 of whom received deferasirox without concomitant immunosuppressive treatment. Partial hematologic responses were observed in 11 of 24 (45.8%) patients; all became transfusion-independent. One patient had an additional platelet response and one patient had an additional platelet and hemoglobin response. Mean serum ferritin levels at end of study were significantly reduced in partial hematologic responders (n=11; -3948 ± 4998 ng/mL; baseline 6693 ± 7014 ng/mL; percentage change from baseline -45.7%; P=0.0029). In non-responders, the reduction in serum ferritin was less pronounced (n=13; -2021 ± 3242 ng/mL; baseline 4365 ± 3063 ng/mL; % change from baseline -27.6%; P=0.0171). Alongside reduction in iron overload, deferasirox may, therefore, improve hematologic parameters in a subset of aplastic anemia patients. Further investigation is required to elucidate the mechanisms involved.
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Affiliation(s)
- Jong Wook Lee
- The Catholic University of Korea, Seoul, South Korea.
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Yang YY, Lee FY, Hsu HC, Lee WS, Chuang CL, Chang CC, Huo TI, Huang YH, Huang CC, Huang CC. Validation of the behavior and concept based assessment of professionalism competence in postgraduate first-year residents. J Chin Med Assoc 2013; 76:186-94. [PMID: 23557885 DOI: 10.1016/j.jcma.2012.12.002] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 08/17/2012] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND The evaluation of professional behaviors and concepts of postgraduate first-year (PGY1) residents has been identified as an area for development. This study examined the efficiency of the professionalism-assessing objective structured clinical examination (OSCE), 360° evaluation, and mini-Clinical Examination Exercise scores (mini-CEX; p-OSCE, p-360° evaluation, and p-mini-CEX scores). METHODS Between January 2009 and January 2012, 189 PGY1 residents were evaluated for behavior- and concept-based professionalism competence based on the above three methods using two checklists unique to each case. Data were analyzed for reliability, inter-rater agreement, interval changes, and gender-related difference for each method. RESULTS The test reliabilities of p-OSCE, p-360° evaluation, and p-mini-CEX were acceptable. Further, the reliability of concept and combined p-OSCE was higher than that of behavior p-OSCE. In addition, the concept OSCE p-scores and behavior 360° evaluation p-scores were significantly improved after 6 months of training. The inter-rater agreements were relatively good in p-OSCE and p-360° evaluation. Interestingly, male PGY1 residents had higher behavior 360° evaluation p-scores from nurses than those of females, whereas female PGY1 residents had higher behavior 360° evaluation p-scores from patients than those of males. Behavior and concept OSCE p-scores were positively correlated with behavior 360° evaluation p-scores. In comparison with p-360° evaluation, the combination of p-360° evaluation + OSCE + mini-CEX significantly increases their reliabilities. CONCLUSION The current study suggests that the p-OSCE, p-360° evaluation, and p-mini-CEX are feasible methods for evaluating professionalism in clinical training of PGY1 residents. Combination of the above three evaluations, participation, and support from multiple constituencies and multiple representatives provides good reliability and adds credibility in the assessment of professionalism competence.
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Affiliation(s)
- Ying-Ying Yang
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
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Tsai WH, Lai SL, Li IT, Chien HY, Shih CH, Kou YR, Hsu HC. Annexin A1 mediates the anti-adhesive effects of dexamethasone during the cell-cell interaction between the all-trans retinoic acid-treated acute promyelocytic leukemic cells and endothelial cells. J Cell Biochem 2013; 114:551-7. [DOI: 10.1002/jcb.24394] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 09/06/2012] [Indexed: 12/12/2022]
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Lin TH, Su YN, Shih JC, Hsu HC, Lee CN. Resolution of high uterine artery pulsatility index and notching following sildenafil citrate treatment in a growth-restricted pregnancy. Ultrasound Obstet Gynecol 2012; 40:609-610. [PMID: 22350857 DOI: 10.1002/uog.11142] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Tsai WH, Chien HY, Shih CH, Lai SL, Li IT, Hsu SC, Kou YR, Hsu HC. Annexin A1 mediates the anti-inflammatory effects during the granulocytic differentiation process in all-trans retinoic acid-treated acute promyelocytic leukemic cells. J Cell Physiol 2012; 227:3661-9. [DOI: 10.1002/jcp.24073] [Citation(s) in RCA: 12] [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: 02/05/2023]
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Hsu HC, Tsai WH, Chien HY, Shih CH, Lai SL, Li IT, Hsu SC, Kou YR. Annexin A1 mediates the anti-inflammatory effects during the granulocytic differentiation process in all-trans retinoic acid-treated acute promyelocytic leukemic cells (63.2). The Journal of Immunology 2012. [DOI: 10.4049/jimmunol.188.supp.63.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Annexin A1 (AnxA1) originating from neutrophils and their microparticles (MPs) plays an important anti-inflammatory role. The role of AnxA1 during the process of granulocytic differentiation is still unknown. All-trans retinoic acid (ATRA) can induce differentiation of acute promyelocytic leukemic(APL) cells into mature granulocytes. We investigated whether or not AnxA1 contributed to the anti-inflammatory properties of ATRA-treated APL (NB4; ATRA-NB) cells. We found that ATRA was able to enhance the surface expression of AnxA1 and its receptor (FPR2/ALX) and the release of AnxA1-containing MPs from ATRA-NB4 cells. Further studies demonstrated that exogenous AnxA1 could inhibit ATRA-NB4 cells in their transmigratory and adhesive activity. In addition, the transmigratory activity of ATRA-NB4 cells can be significantly enhanced by pretreatment with a FPR2/ALX neutralizing antibody, suggesting that endogenous AnxA1 may contribute to the anti-migratory effects. Finally, ATRA-NB4-derived MPs could also inhibit recipient cells in their transmigratory and adhesive activities and these anti-inflammatory effects could be inhibited by pretreatment of MPs with an anti-AnxA1 antibody. Further studies demonstrated that FITC-labeled AnxA1 could be transport from MPs to the membrane of recipient ATRA-NB4 cells. We conclude that biologically active AnxA1 may play a role in the anti-inflammatory properties of ATRA-APL cells during the process of granulocytic differentiation.
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Affiliation(s)
- Hui-Chi Hsu
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
- 4Department of Medicine, Taipei Veterans Genearal Hospital, Taipei, Taiwan
| | - Wen-Hui Tsai
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
- 2Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan
| | - Hong-Yu Chien
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chung-Hung Shih
- 2Department of Respiratory Therapy, Taipei Medical University, Taipei, Taiwan
| | - Shu-Lien Lai
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - I-Ting Li
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Shau-Chieh Hsu
- 3Taipei Municipal Jianguo High School, Taipei, Taipei, Taiwan
| | - Yu Ru Kou
- 1Departments of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Yu YB, Gau JP, Liu CY, Yang MH, Chiang SC, Hsu HC, Hong YC, Hsiao LT, Liu JH, Chiou TJ, Chen PM, Lee TS, Chou LF, Tzeng CH, Chen TJ. A nation-wide analysis of venous thromboembolism in 497,180 cancer patients with the development and validation of a risk-stratification scoring system. Thromb Haemost 2012; 108:225-35. [PMID: 22534880 DOI: 10.1160/th12-01-0010] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 04/12/2012] [Indexed: 12/21/2022]
Abstract
The Asian population is thought to have a low risk of venous thromboembolism (VTE), but the epidemiology of VTE in cancer patients remains unclear. The National Health Insurance Research Database of Taiwan was used to find hospitalised patients newly-diagnosed with cancer to determine the incidence of VTE in cancer patients and to identify the risk factors for VTE. Between 1997 and 2005, 497,180 cancer patients were identified. During a median follow-up of 21.3 months (range 0-119.9 months), 5,296 patients developed VTE. The estimated incidence was 185 events per 100,000 person-years. Patients with a prior history of VTE and female patients between the ages of 40 and 80 carried high risk of VTE. The rate of VTE was relatively high in patients with myeloma, prostate cancer, lung cancer, gynaecologic cancers, sarcoma, and metastasis of unknown origin. We developed a risk-stratification scoring system to divide the cancer patients into four discrete risk groups (very low risk, low risk, intermediate, and high risk). The incidence of VTE in each group was 0.5%, 0.9%, 1.5%, and 8.7%, respectively (p < 0.001). This scoring system was validated in a separate patient cohort. In conclusion, VTE is a distinct burden for cancer patients in Taiwan. The risk scoring system could prove helpful in decision-making concerning thromboprophylaxis in cancer patients.
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Affiliation(s)
- Yuan-Bin Yu
- Institutes of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Tsai WH, Shih CH, Wu HY, Chien HY, Chiang YC, Lai SL, Hsu SC, Kou YR, Hsu HC. Role of lipoxin A4 in the cell-to-cell interaction between all-trans retinoic acid-treated acute promyelocytic leukemic cells and alveolar macrophages. J Cell Physiol 2011; 227:1123-9. [DOI: 10.1002/jcp.22832] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Yang YY, Lee FY, Hsu HC, Huang CC, Chen JW, Cheng HM, Lee WS, Chuang CL, Chang CC, Huang CC. Assessment of first-year post-graduate residents: usefulness of multiple tools. J Chin Med Assoc 2011; 74:531-8. [PMID: 22196467 PMCID: PMC7105044 DOI: 10.1016/j.jcma.2011.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 06/29/2011] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Objective Structural Clinical Examination (OSCE) usually needs a large number of stations with long test time, which usually exceeds the resources available in a medical center. We aimed to determine the reliability of a combination of Direct Observation of Procedural Skills (DOPS), Internal Medicine in-Training Examination (IM-ITE(®)) and OSCE, and to verify the correlation between the small-scale OSCE+DOPS+IM-ITE(®)-composited scores and 360-degree evaluation scores of first year post-graduate (PGY(1)) residents. METHODS Between 2007 January to 2010 January, two hundred and nine internal medicine PGY1 residents completed DOPS, IM-ITE(®) and small-scale OSCE at our hospital. Faculty members completed 12-item 360-degree evaluation for each of the PGY(1) residents regularly. RESULTS The small-scale OSCE scores correlated well with the 360-degree evaluation scores (r = 0.37, p < 0.021). Interestingly, the addition of DOPS scores to small-scale OSCE scores [small-scale OSCE+DOPS-composited scores] increased it's correlation with 360-degree evaluation scores of PGY(1) residents (r = 0.72, p < 0.036). Further, combination of IM-ITE(®) score with small-scale OSCE+DOPS scores [small-scale OSCE+DOPS+IM-ITE(®)-composited scores] markedly enhanced their correlation with 360-degree evaluation scores (r = 0.85, p < 0.016). CONCLUSION The strong correlations between 360-degree evaluation and small-scale OSCE+DOPS+IM-ITE(®)-composited scores suggested that both methods were measuring the same quality. Our results showed that the small-scale OSCE, when associated with both the DOPS and IM-ITE(®), could be an important assessment method for PGY(1) residents.
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Affiliation(s)
- Ying-Ying Yang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Fa-Yauh Lee
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Corresponding author. Dr. Fa-Yauh Lee, Department of Medicine, Taipei Veterans General Hospital, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan, ROC.
| | - Hui-Chi Hsu
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chin-Chou Huang
- Department of Medical Research and Education, Taipei, Veterans General Hospital, Taipei, Taiwan, ROC
| | - Jaw-Wen Chen
- Department of Medical Research and Education, Taipei, Veterans General Hospital, Taipei, Taiwan, ROC
| | - Hao-Min Cheng
- Department of Medical Research and Education, Taipei, Veterans General Hospital, Taipei, Taiwan, ROC
| | - Wen-Shin Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chiao-Lin Chuang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ching-Chih Chang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chia-Chang Huang
- Department of Medical Research and Education, Taipei, Veterans General Hospital, Taipei, Taiwan, ROC
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Huang YC, Liu CJ, Liu CY, Pai JT, Hong YC, Teng HW, Hsiao LT, Chao TC, Gau JP, Liu JH, Hsu HC, Chiou TJ, Chen PM, Yu YB, Tzeng CH. Low absolute lymphocyte count and addition of rituximab confer high risk for interstitial pneumonia in patients with diffuse large B-cell lymphoma. Ann Hematol 2011; 90:1145-51. [DOI: 10.1007/s00277-011-1268-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 05/26/2011] [Indexed: 11/28/2022]
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Yang YY, Lee FY, Hsu HC, Huang CC, Chen JW, Lee WS, Chuang CL, Chang CC, Chen HM, Huang CC. A core competence-based objective structured clinical examination (OSCE) in evaluation of clinical performance of postgraduate year-1 (PGY₁) residents. J Chin Med Assoc 2011; 74:198-204. [PMID: 21550005 PMCID: PMC7105078 DOI: 10.1016/j.jcma.2011.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Accepted: 01/31/2011] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Clinical competency certifications are important parts of internal medicine residency training. This study aims to evaluate a composite objective structured clinical examination (OSCE) that assesses postgraduate year-1 (PGY(1)) residents' acquisition of the six core competencies defined by the Accreditation council for Graduate Medical Education (ACGME). METHODS Six-core-competency-based OSCE was used as examination of the clinical performance of 192 PGY(1) residents during their 3-month internal medicine training between 2007 January and 2009 December. For each year, the reliability of the entire examination was calculated with Cronbach's alpha. RESULTS The reliability of six-core-competency-based OSCE was acceptable, ranging from 0.69 to 0.87 between 2007 and 2009. In comparison with baseline scores, the summary scores and core-competency subscores all showed significant increase after PGY(1) residents finished their 3-month internal medicine training program. CONCLUSION By using a structured development process, the authors were able to create reliable evaluation items for determining PGY(1) residents' acquisition of the ACGME core competencies.
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Affiliation(s)
- Ying-Ying Yang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Fa-Yauh Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
- Corresponding author. Dr. Fa-Yauh Lee, Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan, ROC.
| | - Hui-Chi Hsu
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Chin-Chou Huang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Jaw-Wen Chen
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Wen-Shin Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Chiao-Lin Chuang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Ching-Chih Chang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Hao-Min Chen
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
| | - Chia-Chang Huang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Department of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC
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Kao KJ, Chang KM, Hsu HC, Huang AT. Correlation of microarray-based breast cancer molecular subtypes and clinical outcomes: implications for treatment optimization. BMC Cancer 2011; 11:143. [PMID: 21501481 PMCID: PMC3094326 DOI: 10.1186/1471-2407-11-143] [Citation(s) in RCA: 236] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 04/18/2011] [Indexed: 12/13/2022] Open
Abstract
Background Optimizing treatment through microarray-based molecular subtyping is a promising method to address the problem of heterogeneity in breast cancer; however, current application is restricted to prediction of distant recurrence risk. This study investigated whether breast cancer molecular subtyping according to its global intrinsic biology could be used for treatment customization. Methods Gene expression profiling was conducted on fresh frozen breast cancer tissue collected from 327 patients in conjunction with thoroughly documented clinical data. A method of molecular subtyping based on 783 probe-sets was established and validated. Statistical analysis was performed to correlate molecular subtypes with survival outcome and adjuvant chemotherapy regimens. Heterogeneity of molecular subtypes within groups sharing the same distant recurrence risk predicted by genes of the Oncotype and MammaPrint predictors was studied. Results We identified six molecular subtypes of breast cancer demonstrating distinctive molecular and clinical characteristics. These six subtypes showed similarities and significant differences from the Perou-Sørlie intrinsic types. Subtype I breast cancer was in concordance with chemosensitive basal-like intrinsic type. Adjuvant chemotherapy of lower intensity with CMF yielded survival outcome similar to those of CAF in this subtype. Subtype IV breast cancer was positive for ER with a full-range expression of HER2, responding poorly to CMF; however, this subtype showed excellent survival when treated with CAF. Reduced expression of a gene associated with methotrexate sensitivity in subtype IV was the likely reason for poor response to methotrexate. All subtype V breast cancer was positive for ER and had excellent long-term survival with hormonal therapy alone following surgery and/or radiation therapy. Adjuvant chemotherapy did not provide any survival benefit in early stages of subtype V patients. Subtype V was consistent with a unique subset of luminal A intrinsic type. When molecular subtypes were correlated with recurrence risk predicted by genes of Oncotype and MammaPrint predictors, a significant degree of heterogeneity within the same risk group was noted. This heterogeneity was distributed over several subtypes, suggesting that patients in the same risk groups require different treatment approaches. Conclusions Our results indicate that the molecular subtypes established in this study can be utilized for customization of breast cancer treatment.
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Affiliation(s)
- Kuo-Jang Kao
- Department of Research, Koo Foundation SYS Cancer Center, Taipei, Taiwan.
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Liu YC, Lai WC, Chuang KA, Shen YJ, Hu WS, Ho CH, Chen YB, Hsu MF, Hsu HC, Lieu CH. Blockade of JAK2 activity suppressed accumulation of β-catenin in leukemic cells. J Cell Biochem 2011; 111:402-11. [PMID: 20503246 DOI: 10.1002/jcb.22714] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The Wnt/β-catenin pathway has been implicated in leukemogenesis. We found β-catenin abnormally accumulated in both human acute T cell leukemia Jurkat cells and human erythroleukemia HEL cells. β-Catenin can be significantly down-regulated by the Janus kinase 2 specific inhibitor AG490 in these two cells. AG490 also reduces the luciferase activity of a reporter plasmid driven by LEF/β-catenin promoter. Similar results were observed in HEL cells infected with lentivirus containing shRNA against JAK2 gene. After treatment with 50 µM AG490 or shRNA, the mRNA expression levels of β-catenin, APC, Axin, β-Trcp, GSK3α, and GSK3β were up-regulated within 12-16 h. However, only the protein levels of GSK3β and β-Trcp were found to have increased relative to untreated cells. Knockdown experiments revealed that the AG490-induced inhibition of β-catenin can be attenuated by shRNA targeting β-TrCP. Taken together; these results suggest that β-Trcp plays a key role in the cross-talk between JAK/STAT and Wnt/β-catenin signaling in leukemia cells.
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Affiliation(s)
- Ya-Chen Liu
- Department of Biotechnology and Laboratory Science in Medicine, School of Biomedical Science and Engineering, National Yang-Ming University, Taipei, Taiwan, Republic of China
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Lee FY, Yang YY, Hsu HC, Chuang CL, Lee WS, Chang CC, Huang CC, Chen JW, Cheng HM, Jap TS. Clinical instructors' perception of a faculty development programme promoting postgraduate year-1 (PGY1) residents' ACGME six core competencies: a 2-year study. BMJ Open 2011; 1:e000200. [PMID: 22116089 PMCID: PMC3225591 DOI: 10.1136/bmjopen-2011-000200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective The six core competencies designated by Accreditation Council for Graduate Medical Education (ACGME) are essential for establishing a patient centre holistic medical system. The authors developed a faculty programme to promote the postgraduate year 1 (PGY(1)) resident, ACGME six core competencies. The study aims to assess the clinical instructors' perception, attitudes and subjective impression towards the various sessions of the 'faculty development programme for teaching ACGME competencies.' Methods During 2009 and 2010, 134 clinical instructors participated in the programme to establish their ability to teach and assess PGY(1) residents about ACGME competencies. Results The participants in the faculty development programme reported that the skills most often used while teaching were learnt during circuit and itinerant bedside, physical examination teaching, mini-clinical evaluation exercise (mini-CEX) evaluation demonstration, training workshop and videotapes of 'how to teach ACGME competencies.' Participants reported that circuit bedside teaching and mini-CEX evaluation demonstrations helped them in the interpersonal and communication skills domain, and that the itinerant teaching demonstrations helped them in the professionalism domain, while physical examination teaching and mini-CEX evaluation demonstrations helped them in the patients' care domain. Both the training workshop and videotape session increase familiarity with teaching and assessing skills. Participants who applied the skills learnt from the faculty development programme the most in their teaching and assessment came from internal medicine departments, were young attending physician and had experience as PGY(1) clinical instructors. Conclusions According to the clinical instructors' response, our faculty development programme effectively increased their familiarity with various teaching and assessment skills needed to teach PGY(1) residents and ACGME competencies, and these clinical instructors also then subsequently apply these skills.
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Affiliation(s)
- Fa-Yauh Lee
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ying-Ying Yang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hui-Chi Hsu
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chiao-Lin Chuang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wei-Shin Lee
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ching-Chih Chang
- Division of General Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chia-Chang Huang
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jaw-Wen Chen
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hao-Min Cheng
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Tjin-Shing Jap
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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Teng CJ, Liu HT, Liu CY, Hsih CH, Pai JT, Gau JP, Liu JH, Chiou TJ, Hsu HC, Chen PM, Tzeng CH, Yu YB. Chronic hepatitis virus infection in patients with multiple myeloma: clinical characteristics and outcomes. Clinics (Sao Paulo) 2011; 66:2055-61. [PMID: 22189730 PMCID: PMC3226600 DOI: 10.1590/s1807-59322011001200010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 08/29/2011] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Cytotoxic agents and steroids are used to treat lymphoid malignancies, but these compounds may exacerbate chronic viral hepatitis. For patients with multiple myeloma, the impact of preexisting hepatitis virus infection is unclear. The aim of this study is to explore the characteristics and outcomes of myeloma patients with chronic hepatitis virus infection. METHODS From 2003 to 2008, 155 myeloma patients were examined to determine their chronic hepatitis virus infection statuses using serologic tests for the hepatitis B (HBV) and C viruses (HCV). Clinical parameters and outcome variables were retrieved via a medical chart review. RESULTS The estimated prevalences of chronic HBV and HCV infections were 11.0% (n = 17) and 9.0% (n = 14), respectively. The characteristics of patients who were hepatitis virus carriers and those who were not were similar. However, carrier patients had a higher prevalence of conventional cytogenetic abnormalities (64.3% vs. 25.0%). The cumulative incidences of grade 3-4 elevation of the level of alanine transaminase, 30.0% vs. 12.0%, and hyperbilirubinemia, 20.0% vs. 1.6%, were higher in carriers as well. In a Kaplan-Meier analysis, carrier patients had worse overall survival (median: 16.0 vs. 42.4 months). The prognostic value of carrier status was not statistically significant in the multivariate analysis, but an age of more than 65 years old, the presence of cytogenetic abnormalities, a beta-2-microglobulin level of more than 3.5 mg/L, and a serum creatinine level of more than 2 mg/ dL were independent factors associated with poor prognosis. CONCLUSION Myeloma patients with chronic hepatitis virus infections might be a distinct subgroup, and close monitoring of hepatic adverse events should be mandatory.
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Affiliation(s)
- Chung-Jen Teng
- National Yang-Ming University Hospital, Department of Medicine, Division of Hematology and Oncology, Yilan, Taiwan, Republic of China
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Lieu CH, Shen YJ, Lai WC, Tsai WH, Hsu HC. Prevalence of MPL W515L/K mutations in Taiwanese patients with Philadelphia-negative chronic myeloproliferative neoplasms. J Chin Med Assoc 2010; 73:530-2. [PMID: 21051030 DOI: 10.1016/s1726-4901(10)70115-5] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Accepted: 06/15/2010] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The discovery of Janus kinase 2 (JAK2)-V617F has provided important insight into the pathogenesis of Philadelphia-negative chronic myeloproliferative neoplasms (Ph-negative MPNs); however, the etiology of JAK2(V617F)-negative Ph-negative MPN remains unidentified. MPL(W515L) and MPL(W515K) (MPL(W515L/K)) are 2 gain-of-function mutations, which have been found in some Ph-negative MPN patients from Western countries. However, little is known about the incidence of these mutations in Taiwanese Ph-negative MPN patients. METHODS We determined the MPL sequence of DNA samples from 105 patients, including 88 patients with Ph-negative MPNs and 17 with myelodysplastic syndrome, using polymerase chain reaction amplification of the cytokine receptor MPL exon 10 sequence. RESULTS All the patients were normal at codon 515 regardless of their JAK2 status. CONCLUSION The MPL W515L/K mutations are rare in Taiwanese patients with Ph-negative MPNs.
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Affiliation(s)
- Chien-Hui Lieu
- Department of Biotechnology and Laboratory Science in Medicine, School of Biomedical Science and Engineering, Taipei, Taiwan, R.O.C
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Teng HW, Teng CJ, Wang WS, Chen PM, Chiou TJ, Hsu HC, Liu JH, Yen CC, Hsiao LT, Yang MH, Chao TC, Yang YH, Gau JP. High early mortality rate in elderly patients with multiple myeloma receiving a vincristine-doxorubicin-dexamethasone regimen. Am J Hematol 2010; 85:812-5. [PMID: 20734459 DOI: 10.1002/ajh.21823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Treatment-related mortality (TRM) is not uncommon in patients after the first course of vincristine-doxorubicin-dexamethasone (VAD) chemotherapy,but quite rare after melphalan-prednisolone (MP). This motivated us to compare the rates of TRM after the first course of VAD with those after the first course of MP. We retrospectively assessed survival and TRM in 179 patients treated for multiple myeloma with either MP or VAD. Survival was similar in two groups (P 50.463 in log-rank test). However, TRM was significantly higher inpatients after the first course of VAD (11 in 100 patients, 11.0%) than that after the first course of MP (1 in 79, 1.3%; P 5 0.010). Poor performance status (P 5 0.004) and advanced age (P 5 0.009) before treatment were independent significant factors associated with TRM after the first course of induction therapy. Pyogenic infection was the major cause of TRM after VAD (9 in 11, 81.8%). We concluded that VAD should be cautiously used as induction therapy in multiple myeloma patients, especially in elderly and/or those with poor performance status.
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Lin YS, Hsu CC, Bien MY, Hsu HC, Weng HT, Kou YR. Activations of TRPA1 and P2X receptors are important in ROS-mediated stimulation of capsaicin-sensitive lung vagal afferents by cigarette smoke in rats. J Appl Physiol (1985) 2010; 108:1293-303. [PMID: 20167675 DOI: 10.1152/japplphysiol.01048.2009] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Capsaicin-sensitive lung vagal afferents (CSLVAs) are important in detecting pulmonary reactive oxygen species (ROS). We investigated the mechanisms underlying the stimulation of CSLVAs by inhaled cigarette smoke (CS) in 216 anesthetized rats. In spontaneously breathing rats, CS evoked a CSLVA-mediated reflex bradypnea that was prevented by N-acetyl-L-cysteine (NAC; an antioxidant), HC-030031 [a transient receptor potential ankyrin 1 (TRPA1) receptor antagonist], and iso-pyridoxalphosphate-6-azophenyl-2',5'-disulfonate (iso-PPADS; a P2X receptor antagonist). In paralyzed, artificially ventilated rats, CS evoked an increase in CSLVA fiber activity (DeltaFA) that was abolished by NAC and was attenuated by HC-030031, iso-PPADS, indomethacin (Indo; a cyclooxygenase inhibitor), and a combination of apyrase and adenosine deaminase (ADA) (ATP scavengers); the response to CS was reduced to 11.7+/-4.0%, 39.5+/-10.0%, 52.9+/-14.4%, 68.7+/-10.1%, and 47.2+/-12.9% of control, respectively. The suppressive effect on this afferent response was not improved by a combination of HC-030031 and Indo (DeltaFA=39.5+/-10.1% of control) compared with that induced by HC-030031 alone. In contrast, the suppressive effect was enhanced by a combination of HC-030031 and apyrase+ADA (DeltaFA=5.3+/-4.9% of control) or a combination of iso-PPADS and Indo (DeltaFA=23.3+/-7.7% of control) compared with that induced by HC-030031 alone or iso-PPADS alone. This afferent response was not altered by the vehicles for these drugs. These results suggest that activations of TRPA1 receptors by cyclooxygenase metabolites and P2X receptors by ATP are both necessary for the ROS-mediated stimulation of CSLVA fibers by CS in rats.
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Affiliation(s)
- You Shuei Lin
- Graduate Institute of Medical Sciences, Department of Physiology, School of Respiratory Therapy, College of Medicine, Taipei Medical University, and Neuroscience Research Center, Department of Respiratory Therapy, Taipei Medical University Hospital, Taipei, Taiwan
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