1
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Iwatate M, Hirata D, Francisco CPD, Co JT, Byeon J, Joshi N, Banerjee R, Quach DT, Aye TT, Chiu H, Lau LHS, Ng SC, Ang TL, Khomvilai S, Li X, Ho S, Sano W, Hattori S, Fujita M, Murakami Y, Shimatani M, Kodama Y, Sano Y. Efficacy of international web-based educational intervention in the detection of high-risk flat and depressed colorectal lesions higher (CATCH project) with a video: Randomized trial. Dig Endosc 2022; 34:1166-1175. [PMID: 35122323 PMCID: PMC9540870 DOI: 10.1111/den.14244] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/14/2022] [Accepted: 01/23/2022] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Three subcategories of high-risk flat and depressed lesions (FDLs), laterally spreading tumors non-granular type (LST-NG), depressed lesions, and large sessile serrated lesions (SSLs), are highly attributable to post-colonoscopy colorectal cancer (CRC). Efficient and organized educational programs on detecting high-risk FDLs are lacking. We aimed to explore whether a web-based educational intervention with training on FIND clues (fold deformation, intensive stool/mucus attachment, no vessel visibility, and demarcated reddish area) may improve the ability to detect high-risk FDLs. METHODS This was an international web-based randomized control trial that enrolled non-expert endoscopists in 13 Asian countries. The participants were randomized into either education or non-education group. All participants took the pre-test and post-test to read 60 endoscopic images (40 high-risk FDLs, five polypoid, 15 no lesions) and answered whether there was a lesion. Only the education group received a self-education program (video and training questions and answers) between the tests. The primary outcome was a detection rate of high-risk FDLs. RESULTS In total, 284 participants were randomized. After excluding non-responders, the final data analyses were based on 139 participants in the education group and 130 in the non-education group. The detection rate of high-risk FDLs in the education group significantly improved by 14.7% (66.6-81.3%) compared with -0.8% (70.8-70.0%) in the non-education group. Similarly, the detection rate of LST-NG, depressed lesions, and large SSLs significantly increased only in the education group by 12.7%, 12.0%, and 21.6%, respectively. CONCLUSION Short self-education focusing on detecting high-risk FDLs was effective for Asian non-expert endoscopists. (UMIN000042348).
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Affiliation(s)
- Mineo Iwatate
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
| | - Daizen Hirata
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
- Department of Gastroenterology and HepatologyKindai UniversityOsakaJapan
| | | | - Jonard Tan Co
- Institute of Digestive and Liver DiseasesSt. Luke’s Medical CenterTaguig CityPhilippines
| | - Jeong‐Sik Byeon
- Department of GastroenterologyAsan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea
| | - Neeraj Joshi
- Gastro Enterology UnitNepal Cancer Hospital and Research CentreLalitpurNepal
| | - Rupa Banerjee
- Medical GastroenterologyAsian Institute of GastroenterologyNew DelhiIndia
| | - Duc Trong Quach
- University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi MinhVietnam
| | | | - Han‐Mo Chiu
- Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
| | - Louis H. S. Lau
- Department of Medicine and TherapeuticsFaculty of MedicineInstitute of Digestive DiseaseThe Chinese University of Hong KongHong KongChina
| | - Siew C. Ng
- Department of Medicine and TherapeuticsFaculty of MedicineInstitute of Digestive DiseaseThe Chinese University of Hong KongHong KongChina
| | - Tiing Leong Ang
- Department of Gastroenterology and HepatologyChangi General HospitalSingHealthSingapore
| | - Supakij Khomvilai
- Surgical EndoscopyColorectal DivisionDepartment of SurgeryFaculty of MedicineChulalongkorn UniversityBangkokThailand
| | - Xiao‐Bo Li
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of Health, Renji HospitalSchool of MedicineShanghai Institute of Digestive DiseaseShanghai Jiao Tong UniversityShanghaiChina
| | - Shiaw‐Hooi Ho
- Department of MedicineFaculty of MedicineUniversity of MalayaKuala LumpurMalaysia
| | - Wataru Sano
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
| | - Santa Hattori
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
| | - Mikio Fujita
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
| | | | - Masaaki Shimatani
- The Third Department of Internal MedicineDivision of Gastroenterology and HepatologyKansai Medical University Medical CenterOsakaJapan
| | - Yuzo Kodama
- Division of GastroenterologyDepartment of Internal MedicineKobe University Graduate School of MedicineHyogoJapan
| | - Yasushi Sano
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care (iMEC)Sano HospitalHyogoJapan
- Kansai Medical UniversityOsakaJapan
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2
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Chiu Y, Chiu H, Chang L. Endoscopic features of
high‐risk T1
colorectal cancer: A case report with literature review. Adv in Digestive Med 2021. [DOI: 10.1002/aid2.13298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yu‐Tse Chiu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Fu Jen Catholic University Hospital New Taipei Taiwan
| | - Han‐Mo Chiu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
- Health Management Center National Taiwan University Hospital Taipei Taiwan
| | - Li‐Chun Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
- Health Management Center National Taiwan University Hospital Taipei Taiwan
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3
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Cheng S, Chen C, He H, Chang L, Hsu W, Wu M, Chiu H. Impact of COVID-19 pandemic on fecal immunochemical test screening uptake and compliance to diagnostic colonoscopy. J Gastroenterol Hepatol 2021; 36:1614-1619. [PMID: 33217055 PMCID: PMC7753615 DOI: 10.1111/jgh.15325] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 10/12/2020] [Accepted: 10/24/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM During this COVID-19 pandemic, Taiwan is one of the few countries where fecal immunochemical test and endoscopic activity for colorectal cancer screening keeps ongoing. We aimed to investigate how screening uptake and colonoscopy rate were affected in one of the biggest screening hubs in Northern Taiwan. METHODS We conducted a prospective observational study tracing and analyzing the screening uptake and the trend of compliance to diagnostic colonoscopy in fecal immunochemical test-positive subjects in the National Taiwan University Hospital screening hub since the outbreak of COVID-19 and compared it with that of the corresponding periods in the past 3 years. Cancellation and rescheduling rates of colonoscopy and related reasons were also explored. RESULTS Screening uptake during December 2019 to April 2020 was 88.8%, which was significantly lower than that in the corresponding period of the past 3 years (91.2-92.7%, P for trend < 0.0001). Colonoscopy rate in this period was 66.1%, which was also significantly lower than that in the past 3 years (70.2-77.5%, P for trend = 0.017). Rescheduling or cancellation rate was up to 10.9%, which was significantly higher than that in the past 3 years (P for trend = 0.023), and half of them was due to the fear of being infected. CONCLUSION Fecal immunochemical test screening was significantly affected by COVID-19 pandemic. In order to resume the practice in COVID-19 era, screening organizers should consider various approaches to secure timely diagnosis of colorectal cancer.
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Affiliation(s)
- Shao‐Yi Cheng
- Department of Family Medicine, College of Medicine and HospitalNational Taiwan UniversityTaipeiTaiwan,Cancer Administration and Coordination CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Chu‐Fen Chen
- Cancer Administration and Coordination CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Hsien‐Chin He
- Cancer Administration and Coordination CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Li‐Chun Chang
- Department of Internal Medicine, College of Medicine and HospitalNational Taiwan UniversityTaipeiTaiwan
| | - Wen‐Feng Hsu
- Department of Internal MedicineNational Taiwan University Cancer CenterTaipeiTaiwan
| | - Ming‐Shiang Wu
- Department of Internal Medicine, College of Medicine and HospitalNational Taiwan UniversityTaipeiTaiwan
| | - Han‐Mo Chiu
- Department of Internal Medicine, College of Medicine and HospitalNational Taiwan UniversityTaipeiTaiwan
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4
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Chiu H, Hann P, Lee B, Saunders S, Freeborn G, Levin A. POS-313 BETTER TOGETHER: A PROVINCIAL STRATEGY TO IMPROVE COLLABORATIVE GOAL-SETTING IN ADULTS WITH CHRONIC KIDNEY DISEASE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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5
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Chiu H, Koo W, Bennett L, Spensley R, Sadler J, Lee B, Freeborn G. POS-312 PATIENT AND FAMILY ENGAGEMENT IN A PROVINCIAL KIDNEY NETWORK: WHAT HAVE WE LEARNED SO FAR? Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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6
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Redd M, Scheuer S, Saez N, Yoshikawa Y, Chiu H, Gao L, Hicks M, Villanueva J, Cuellar-Partida G, Peart J, See Hoe L, Chen X, Sun Y, Suen J, Hatch R, Rollo B, Alzubaidi M, Maljevic S, Quaife-Ryan G, Hudson J, Porrello E, White M, Cordwell S, Fraser J, Petrou S, Reichelt M, Thomas W, King G, Macdonald P, Palpant N. Genetic and Pharmacological Studies Reveal Acid Sensing Ion Channel 1a as a Novel Therapeutic Target Against Cardiac Ischaemia-Reperfusion Injury. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.005] [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: 11/24/2022]
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Abstract
Abstract
Introduction
Obstructive sleep apnea (OSA) is a condition characterized by repeated episodes of partial or complete obstruction of the respiratory passages during the sleep. Traditional polysomnography (PSG) for OSA estimation is bulky and time-consuming for daily use. Therefore, this study aims to develop a novel photoplethysmography (PPG) and accelerometer based smart watch for OSA detection, in which a high-performance and low-complexity automated OSA detection was embedded for long-term in-home measurement.
Methods
The developed watch measured PPG signals from wrist radial artery and body motion from accelerometer as well. 121 patients (92 males, 29 females) were recruited from the normal community and Center of Sleep, National Taiwan University Hospital, Taiwan in this study. All OSA scoring were analyzed by three registered PSG technologists. The AHI of the cohort was 10.1±18.3 (0 to 82.7). An automated OSA detection algorithm was designed based on machine-learning (ML) technique, in which was iteratively updated according to each 30-second epoch of the collected data. Subsequently, obstructive and hypopnea events were detected according to the OSA detection algorithm.
Results
To better valid the effectiveness, this study focused on the estimation performance of the subjects with AHI>15. Based on hold-out validation, the average sensitivity and precision in the AHI>15 cohort were 77.2% and 58.6%, respectively, with a Cohen’s kappa of 0.46. The interclass correlation between the watch and technologists was 0.81 (95%CI: 0.61-0.91). The result showed that the proposed automated OSA detection could achieve consistent result with technologist during standard sleep testing.
Conclusion
This study developed a wrist-based watch based on ML technique to assess OSA severity. We compared the performance with clinical technologists for the OSA detection. Further, the sensitivity and precision were generally acceptable while subjects were with AHI>15. The proposed wrist-based watch could provide reliable performance for OSA estimation, and may be of a light for future in-home sleep studies.
Support
This study was supported by Mediatek Inc.
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Affiliation(s)
- H Chiu
- Mediatek Inc., Hsinchu city, TAIWAN
| | - P Lee
- Centre of Sleep Disorder, National Taiwan University Hospital, Taipei City, TAIWAN
| | - B Ku
- Mediatek Inc., Hsinchu city, TAIWAN
| | - Y Liu
- Mediatek Inc., Hsinchu city, TAIWAN
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8
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Kao C, Lin P, Chang L, Hsu W, Tu C, Chiu H, Chang C. A rare cause of ischemic colitis: A case series of idiopathic mesenteric phlebosclerotic colitis from two medical centers in Taiwan. Adv in Digestive Med 2020. [DOI: 10.1002/aid2.13162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chien‐Neng Kao
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
| | - Pao‐Ying Lin
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine Taipei Medical University Taipei Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Taipei Medical University Hospital Taipei Taiwan
| | - Li‐Chun Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
- Health Management Center National Taiwan University Hospital Taipei Taiwan
| | - Wen‐Feng Hsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
| | - Chia‐Hung Tu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
- Health Management Center National Taiwan University Hospital Taipei Taiwan
| | - Han‐Mo Chiu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan
- Health Management Center National Taiwan University Hospital Taipei Taiwan
| | - Chun‐Chao Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine Taipei Medical University Taipei Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Taipei Medical University Hospital Taipei Taiwan
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9
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Sano Y, Chiu H, Li X, Khomvilai S, Pisespongsa P, Co JT, Kawamura T, Kobayashi N, Tanaka S, Hewett DG, Takeuchi Y, Imai K, Utsumi T, Teramoto A, Hirata D, Iwatate M, Singh R, Ng SC, Ho S, Chiu P, Tajiri H. Standards of diagnostic colonoscopy for early-stage neoplasia: Recommendations by an Asian private group. Dig Endosc 2019; 31:227-244. [PMID: 30589103 PMCID: PMC6850515 DOI: 10.1111/den.13330] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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] [Received: 10/23/2018] [Accepted: 12/24/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM In recent years, the incidence of colorectal cancer has been increasing, and it is now becoming the major cause of cancer death in Asian countries. The aim of the present study was to develop Asian expert-based consensus to standardize the preparation, detection and characterization for the diagnosis of early-stage colorectal neoplasia. METHODS A professional group was formed by 36 experts of the Asian Novel Bio-Imaging and Intervention Group (ANBI2 G) members. Representatives from 12 Asia-Pacific countries participated in the meeting. The group organized three consensus meetings focusing on diagnostic endoscopy for gastrointestinal neoplasia. The Delphi method was used to develop the consensus statements. RESULTS Through the three consensus meetings with debating, reviewing the literature and regional data, a consensus was reached at third meeting in 2016. The consensus was reached on a total of 10 statements. Summary of statements is as follows: (i) Adequate bowel preparation for high-quality colonoscopy; (ii) Antispasmodic agents for lesion detection; (iii) Image-enhanced endoscopy (IEE) for polyp detection; (iv) Adenoma detection rate for quality indicators; (v) Good documentation of colonoscopy findings; (vi) Complication rates; (vii) Cecal intubation rate; (viii) Cap-assisted colonoscopy (CAC) for polyp detection; (ix) Macroscopic classification using indigocarmine spray for characterization of colorectal lesions; and (x) IEE and/or magnifying endoscopy for prediction of histology. CONCLUSION This consensus provides guidance for carrying out endoscopic diagnosis and characterization for early-stage colorectal neoplasia based on the evidence. This will enhance the quality of endoscopic diagnosis and improve detection of early-stage colorectal neoplasia.
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Affiliation(s)
- Yasushi Sano
- Gastrointestinal Center and Institute of Minimally invasive Endoscopic Care (iMEC)Sano HospitalHyogo
| | - Han‐Mo Chiu
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
| | - Xiao‐bo Li
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of HealthRenji HospitalSchool of MedicineShanghai Institute of Digestive DiseaseShanghai Jiao Tong UniversityShanghaiChina
| | - Supakij Khomvilai
- Surgical EndoscopyColorectal SurgeryDepartment of SurgeryChulalongkorn UniversityBangkokThailand
| | - Pises Pisespongsa
- Digestive Disease CenterBumrungrad International HospitalBangkokThailand
| | - Jonard Tan Co
- St. Luke's Medical Centre ‐ Global CityTaguig City, Metro ManilaPhilippines
| | - Takuji Kawamura
- Department of GastroenterologyKyoto Second Red Cross HospitalKyotoJapan
| | | | - Shinji Tanaka
- Department of EndoscopyHiroshima University HospitalHiroshimaJapan
| | - David G. Hewett
- Faculty of MedicineUniversity of QueenslandBrisbaneAustralia
| | - Yoji Takeuchi
- Department of Gastrointestinal OncologyOsaka International Cancer InstituteOsakaJapan
| | - Kenichiro Imai
- Division of EndoscopyShizuoka Cancer CenterShizuokaJapan
| | - Takahiro Utsumi
- Department of Gastroenterology and HepatologyKyoto University Graduate School of MedicineKyotoJapan
| | - Akira Teramoto
- Gastrointestinal Center and Institute of Minimally invasive Endoscopic Care (iMEC)Sano HospitalHyogo
| | - Daizen Hirata
- Gastrointestinal Center and Institute of Minimally invasive Endoscopic Care (iMEC)Sano HospitalHyogo
| | - Mineo Iwatate
- Gastrointestinal Center and Institute of Minimally invasive Endoscopic Care (iMEC)Sano HospitalHyogo
| | - Rajvinder Singh
- Gastroenterology UnitDivision of MedicineLyell McEwin HospitalSchool of MedicineThe University of AdelaideAdelaideAustralia
| | - Siew C. Ng
- Departments of Medicine and TherapeuticsInstitute of Digestive DiseaseState Key Laboratory of Digestive DiseasesLKS Institute of Health ScienceThe Chinese University of Hong KongHong KongChina
| | - Shiaw‐Hooi Ho
- Department of MedicineFaculty of MedicineUniversity of MalayaKuala LumpurMalaysia
| | - Philip Chiu
- SurgeryInstitute of Digestive DiseaseState Key Laboratory of Digestive DiseasesLKS Institute of Health ScienceThe Chinese University of Hong KongHong KongChina
| | - Hisao Tajiri
- Department of Innovative Interventional Endoscopy ResearchThe Jikei University School of MedicineTokyoJapan
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Hamann H, Lee S, Browning T, Chavez C, Sanders J, Abbara S, Balis D, Chiu H, Moran B, Santini N, Gerber D. MA02.10 The First Year of Implementing a Lung Cancer Screening Program in an Urban Safety-Net Health System. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Karim N, Jacob A, Shaukat M, Hua Y, Chiu H, Mehta A, Moore P, Chow A. 59Can high volume tertiary centres with 24/7 device implanting service provide improved efficacy and outcomes compared to a large district general hospital model? Europace 2017. [DOI: 10.1093/europace/eux283.054] [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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12
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Shih CH, Chang YJ, Huang WC, Jang TH, Kung HJ, Wang WC, Yang MH, Lin MC, Huang SF, Chou SW, Chang E, Chiu H, Shieh TY, Chen YJ, Wang LH, Chen L. EZH2-mediated upregulation of ROS1 oncogene promotes oral cancer metastasis. Oncogene 2017; 36:6542-6554. [PMID: 28759046 PMCID: PMC5702718 DOI: 10.1038/onc.2017.262] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 02/27/2017] [Revised: 06/03/2017] [Accepted: 06/08/2017] [Indexed: 12/28/2022]
Abstract
Current anti-epidermal growth factor receptor (EGFR) therapy for oral cancer does not provide satisfactory efficacy due to drug resistance or reduced EGFR level. As an alternative candidate target for therapy, here we identified an oncogene, ROS1, as an important driver for oral squamous cell carcinoma (OSCC) metastasis. Among tumors from 188 oral cancer patients, upregulated ROS1 expression strongly correlated with metastasis to lung and lymph nodes. Mechanistic studies uncover that the activated ROS1 results from highly expressed ROS1 gene instead of gene rearrangement, a phenomenon distinct from other cancers. Our data further reveal a novel mechanism that reduced histone methyltransferase EZH2 leads to a lower trimethylation of histone H3 lysine 27 suppressive modification, relaxes chromatin, and promotes the accessibility of the transcription factor STAT1 to the enhancer and the intron regions of ROS1 target genes, CXCL1 and GLI1, for upregulating their expressions. Down-regulation of ROS1 in highly invasive OSCC cells, nevertheless, reduces cell proliferation and inhibits metastasis to lung in the tail-vein injection and the oral cavity xenograft models. Our findings highlight ROS1 as a candidate biomarker and therapeutic target for OSCC. Finally, we demonstrate that co-targeting of ROS1 and EGFR could potentially offer an effective oral cancer therapy.
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Affiliation(s)
- C-H Shih
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - Y-J Chang
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - W-C Huang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - T-H Jang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - H-J Kung
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan, ROC.,School of Medicine, University of California-Davis, Sacramento, CA, USA
| | - W-C Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - M-H Yang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - M-C Lin
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - S-F Huang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - S-W Chou
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - E Chang
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - H Chiu
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - T-Y Shieh
- Department of Oral Hygiene, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC
| | - Y-J Chen
- Department of Radiation Oncology, MacKay Memorial Hospital, Taipei, Taiwan, ROC
| | - L-H Wang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - L Chen
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan, ROC.,Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan, ROC
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Chiu H, Su T, Chen C, Chen C, Hsieh C, Liu C. DEMENTIA PREDICTED ONE-YEAR MORTALITY FOR HIP FRACTURE PATIENTS: A POPULATION-BASED STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H. Chiu
- Christian Changhua Hospital, Changhua, Taiwan,
- Kaohsiung Medical University, Kaohsiung, Taiwan,
| | - T. Su
- Kaohsiung Medical University, Kaohsiung, Taiwan,
| | - C. Chen
- Kaohsiung Medical University, Kaohsiung, Taiwan,
- Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - C. Chen
- Christian Changhua Hospital, Changhua, Taiwan,
| | - C. Hsieh
- Christian Changhua Hospital, Changhua, Taiwan,
| | - C. Liu
- Christian Changhua Hospital, Changhua, Taiwan,
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Chou H, Wen C, Chiu H, Huang H, Kuo C, Huang C. USE OF ANTI-GOUT AGENT AMONG CHRONIC KIDNEY DISEASE PATIENT WITH HYPERURICEMIA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- H. Chou
- Clinical Research Outcome and Training Center, Big Data Center, China Medical University Hospital, Taichung, Taiwan,
| | - C. Wen
- Clinical Research Outcome and Training Center, Big Data Center, China Medical University Hospital, Taichung, Taiwan,
- Department of Family Medicine, National Taiwan University Hospital, Taipei, Taiwan,
| | - H. Chiu
- Clinical Research Outcome and Training Center, Big Data Center, China Medical University Hospital, Taichung, Taiwan,
| | - H. Huang
- Clinical Research Outcome and Training Center, Big Data Center, China Medical University Hospital, Taichung, Taiwan,
| | - C. Kuo
- Big Data Center, China Medical University Hospital, Taichung, Taiwan,
- Kidney Institute, China Medical University Hospital, Taichung, Taiwan
| | - C. Huang
- Kidney Institute, China Medical University Hospital, Taichung, Taiwan
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Wan C, Chiu H, Hsieh H, Tsai H, Lin Y, Wang J. COST-EFFECTIVENESS OF MINI-LAPAROTOMY FOR COLORECTAL CANCERS IN ELDERLY PATIENTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C. Wan
- Christian Changhua Hospital, Changhua, Taiwan,
| | - H. Chiu
- Christian Changhua Hospital, Changhua, Taiwan,
- Kaohsiung Medical University, Kaohsiung, Taiwan,
| | - H. Hsieh
- Kaohsiung Medical University, Kaohsiung, Taiwan,
| | - H. Tsai
- Kaohsiung Medical University Hospital, Kaohsiung, Taiwan,
| | - Y. Lin
- National Taiwan University, Taipei, Taiwan
| | - J. Wang
- Kaohsiung Medical University, Kaohsiung, Taiwan,
- Kaohsiung Medical University Hospital, Kaohsiung, Taiwan,
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Huang W, Lai S, Chiu H, Plikus M, Lin S. 881 Ionizing radiation triggers dedifferentiation of outer root sheath cells into stem cell-like progenitors for hair follicle regeneration. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Prell R, Halpern W, Beyer J, Tarrant J, Sukumaran S, Huseni M, Kaiser R, Wilkins D, Karanth S, Chiu H, Ruppel J, Zhang C, Lin K, Damico-Beyer L, Kim J, Taylor H. 424 Nonclinical safety assessment of a humanized anti-OX40 agonist antibody, MOXR0916. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70550-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Davids MR, Marais N, Jacobs J, Cohen E, Krause I, Goldberg E, Garty M, Krause I, Dursun B, Sahan Y, Tanriverdi H, Rota S, Uslu S, Senol H, Minutolo R, Gabbai FB, Agarwal R, Chiodini P, Borrelli S, Stanzione G, Nappi F, Bellizzi V, Conte G, De Nicola L, Van De Walle J, Johnson S, Fremeaux-Bacchi V, Ardissino G, Ariceta G, Beauchamp J, Cohen D, Greenbaum LA, Ogawa M, Schaefer F, Licht C, Scalzotto E, Nalesso F, Zaglia T, Corradi V, Neri M, Martino F, Zanella M, Brendolan A, Mongillo M, Ronco C, Chinnappa S, Mooney A, El Nahas AM, Tu YK, Tan LB, Jung JY, Kim AJ, Ro H, Lee C, Chang JH, Lee HH, Chung W, Clarke AL, Young HM, Hull KL, Hudson N, Burton JO, Smith AC, Marx S, Petrilla A, Filipovic I, Lee WC, Meijers B, Poesen R, Storr M, Claes K, Kuypers D, Evenepoel P, Aukland M, Clarke AL, Hull KL, Burton JO, Smith AC, Betriu A, Martinez-Alonso M, Arcidiacono MV, Cannata-Andia J, Pascual J, Valdivielso JM, Fernandez-Giraldez E, Kingswood JC, Zonnenberg B, Sauter M, Zakar G, Biro B, Besenczi B, Varga A, Pekacs P, Pizzini P, Pisano A, Leonardis D, Panuccio V, Cutrupi S, Tripepi G, Mallamaci F, Zoccali C, Arnold J, Baharani J, Rayner H, So BH, Blackwell S, Jardine AG, Macgregor MS, Cunha C, Barreto P, Pereira S, Ventura A, Mota M, Seabra J, Sakaguchi T, Kobayashi S, Yano T, Yoshimoto W, Bancu I, Bonal Bastons J, Cleries Escayola M, Vela Vallespin E, Bustins Poblet M, Magem Luque D, Pastor Fabregas M, Chen JH, Chen SC, Chang JM, Hwang SJ, Chen HC, Ahbap E, Kara E, Basturk T, Sahutoglu T, Koc Y, Sakaci T, Sevinc M, Akgol C, Ozagari AA, Unsal A, Minami S, Hesaka A, Yamaguchi S, Iwahashi E, Sakai S, Fujimoto T, Sasaki K, Fujita Y, Yokoyama K, Marks A, Fluck N, Prescott G, Robertson L, Smith WC, Black C, Ohsawa M, Fujioka T, Omori S, Isurugi T, Tanno K, Onoda T, Omama S, Ishibashi Y, Makita S, Okayama A, Garland JS, Simpson CS, Metangi MF, Parfrey B, Johri AM, Sloan L, McAuley J, Cunningham R, Mullan R, Quinn M, Harron C, Chiu H, Murphy-Burke D, Werb R, Jung B, Chan-Yan C, Duncan J, Forzley B, Lowry R, Hargrove G, Carson R, Levin A, Karim M, Reznik EV, Storozhakov GIV, Rollino C, Troiano M, Bagatella M, Liuzzo C, Quarello F, Roccatello D, Blaslov K, Bulum T, Prka In I, Duvnjak L, Heleniak Z, Ciepli ska M, Szychli ski T, Pryczkowska M, Bartosi ska E, Wiatr H, Kot owska H, Tylicki L, Rutkowski B, Song YR, Kim SGK, Kim HJ, Noh JW, Tong A, Jesudason S, Craig JC, Winkelmayer WC, Hung PH, Huang YT, Hsiao CY, Sung PS, Guo HR, Tsai KJ, Wu CC, Su SL, Kao SY, Lu KC, Lin YF, Lin WH, Lee HM, Cheng MF, Wang WM, Yang LY, Wang MC, Vukovic Lela I, Sekoranja M, Poljicanin T, Karanovic S, Abramovic M, Matijevic V, Stipancic Z, Leko N, Cvitkovic A, Dika Z, Kos J, Laganovic M, Grollman AP, Jelakovic B, Dryl-Rydzynska T, Prystacki T, Malyszko J, Trifiro G, Sultana J, Giorgianni F, Ingrasciotta Y, Muscianisi M, Tari DU, Perrotta M, Buemi M, Canale V, Arcoraci V, Santoro D, Rizzo M, Iheanacho I, Van Nooten FE, Goldsmith D, Grandtnerova B, Berat ova Z, ErvenOva M, cErven J, Markech M, tefanikova A, Engelen W, Elseviers M, Gheuens E, Colson C, Muyshondt I, Daelemans R. CKD GENERAL AND CLINICAL EPIDEMIOLOGY 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Harari A, Singh R, Li N, Chiu H, Yeh M. Increased Aggressive Thyroid Cancer Rates in California. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Shinonaga Y, Nishimura T, Chiu S, Chiu H, Abe Y, Arita K. Ability of multi-mineral-ion release from novel apatite-ionomer-cement. Dent Mater 2014. [DOI: 10.1016/j.dental.2014.08.267] [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: 11/25/2022]
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Guilleminault C, Primeau M, Chiu H, Yuen K, Leger D, Metlaine A. Sleep-disordered-breathing in Ehlers–Danlos syndrome (a genetic model of obstructive sleep apnea). Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hsu J, Chiu H, Chou D, Huang C, Lin W, Lien T, Yen K. 1025 POSTER Suppression of Stat3 Activity Sensitizes Gefitinib-resistant Non Small Cell Lung Cancer Cells. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70668-2] [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: 11/27/2022]
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Stefanich EG, Danilenko DM, Wang H, O'Byrne S, Erickson R, Gelzleichter T, Hiraragi H, Chiu H, Ivelja S, Jeet S, Gadkari S, Hwang O, Fuh F, Looney C, Howell K, Albert V, Balazs M, Refino C, Fong S, Iyer S, Williams M. A humanized monoclonal antibody targeting the β7 integrin selectively blocks intestinal homing of T lymphocytes. Br J Pharmacol 2011; 162:1855-70. [PMID: 21232034 DOI: 10.1111/j.1476-5381.2011.01205.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND PURPOSE rhuMAb Beta7 is a humanized anti-human β7 monoclonal antibody currently in phase I in inflammatory bowel disease. rhuMAb Beta7 binds the β7 subunit of the integrins α4β7 and αEβ7, blocking interaction with their ligands. These integrins play key roles in immune cell homing to and retention in mucosal sites, and are associated with chronic inflammatory diseases of the gastrointestinal tract. The goal of this study was to evaluate the mucosal specificity of rhuMAb Beta7. EXPERIMENTAL APPROACH We assessed the effect of murine anti-Beta7 on lymphocyte homing in mouse models of autoimmune disease. We also compared the effect of rhuMAb Beta7 on circulating mucosal-homing versus peripheral-homing T cells in naïve non-human primates. KEY RESULTS In cynomolgus monkeys, occupancy of β7 integrin receptors by rhuMAb Beta7 correlated with an increase in circulating β7(+) mucosal-homing lymphocytes, with no apparent effect on levels of circulating β7(-) peripheral-homing lymphocytes. rhuMAb Beta7 also inhibited lymphocyte homing to the inflamed colons of severe combined immunodeficient mice in CD45RB(high) CD4(+) T-cell transfer models. Consistent with a lack of effect on peripheral homing, in a mouse model of experimental autoimmune encephalomyelitis, anti-β7 treatment resulted in no amelioration of CNS inflammation. CONCLUSIONS AND IMPLICATIONS The results presented here suggest that rhuMAb Beta7 selectively blocks lymphocyte homing to the gastrointestinal tract without affecting lymphocyte trafficking to non-mucosal tissues. rhuMAb Beta7 provides a targeted therapeutic approach with the potential for a more attractive benefit:risk ratio than currently available inflammatory bowel disease therapies.
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Affiliation(s)
- E G Stefanich
- Department of Pharmacodynamic Biomarkers, Genentech, Inc., South San Francisco, CA 94080, USA
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Bradley NME, Husted J, Sey MSL, Sinclair E, Li KK, Husain AF, Danjoux C, Barnes EA, Tsao MN, Barbera L, Harris K, Chiu H, Doyle M, Chow E. Did the pattern of practice in the prescription of palliative radiotherapy for the treatment of uncomplicated bone metastases change between 1999 and 2005 at the rapid response radiotherapy program? Clin Oncol (R Coll Radiol) 2008; 20:327-36. [PMID: 18276125 PMCID: PMC7126631 DOI: 10.1016/j.clon.2008.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [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: 09/05/2007] [Revised: 12/19/2007] [Accepted: 12/20/2007] [Indexed: 01/15/2023]
Abstract
AIMS Since 1999, randomised clinical trials and meta-analyses have reported equal efficacy of pain relief from single- and multiple-fraction radiotherapy for bone metastases. A number of factors, including limited radiotherapy resources, waiting times, and patient convenience, suggest single fraction to be the treatment of choice for patients. However, international patterns of practice indicate that multiple fractions are still commonly used. This study examined whether dose-fractionation schemes used for the treatment of bone metastases at the Rapid Response Radiotherapy Program (RRRP) at the Odette Cancer Centre have changed since 1999. MATERIALS AND METHODS A retrospective review of the prospective RRRP database and hospital records were conducted for all patients treated with palliative radiotherapy for uncomplicated bone metastases at the RRRP in 1999 (or baseline), 2001, 2004 and from 1 January to 31 July 2005. Data were collected on patient demographics and clinical characteristics. RESULTS Of the 693 patients, 65 and 35% were prescribed single fraction (predominantly single 8 Gy) and multiple fractions (predominantly 20 Gy/five fractions), respectively. The administration of single treatments generally increased over time, from 51% in 1999 to 66% in 2005 (P=0.0001). On the basis of multiple logistic regression analyses, patients were more likely to be prescribed single-fraction radiotherapy if they had prostate cancer, had a poorer performance status, were treated to the limbs, hips, shoulders, pelvis, ribs, scapula, sternum, or clavicle (compared with the spine), were treated by a radiation oncologist who had been trained in earlier years, and who were treated after 1999. CONCLUSIONS Between 1999 and 2005, the use of single-fraction radiotherapy increased, corresponding to publications showing equal efficacy of pain relief between single and multiple fractions in the management of uncomplicated bone metastases. However, about a third of patients still received multiple fractions.
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Affiliation(s)
- N M E Bradley
- Department of Health Studies and Gerontology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
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Chow E, Chiu H, Doyle M, Hruby G, Holden L, Barnes E, Tsao M, Danjoux C. 2569. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Chow E, Chiu H, Doyle M, Hruby G, Holden L, Barnes E, Tsao M, Danjoux C. 216 Patient expectation of the partial response and response shift in bone metastases. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80957-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Goel A, Brooks-Worrell B, Chiu H, Palmer JP. 431 T CELL PROLIFERATIVE AND CYTOKINE RESPONSES TO ISLET PROTEINS IN AUTOANTIBODY NEGATIVE TYPE 2 PATIENTS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
AIMS To test the hypothesis that feeding soy formula to infants with congenital hypothyroidism (CH) leads to prolonged increase of thyroid stimulating hormone (TSH). METHODS The study was a review of 78 patients seen during their first year of life between 1990 and 1998. Data regarding clinical diagnosis, date of treatment initiation, TSH, levothyroxine dose, weight, length, and diet information from each visit were collected from the charts. RESULTS There were eight patients in the soy diet group and 70 in the non-soy diet group. There was no significant difference between the two groups in the starting dose of levothyroxine or the change in this dose over one year. There was a significant difference between the two groups in the following areas: time to TSH normalisation, first TSH on treatment, percentage with increased TSH at 4 months of age, percentage with increased TSH throughout the first year of life, and in the overall trend of TSH at each visit. CONCLUSIONS Infants fed soy formula had prolonged increase of TSH when compared to infants fed non-soy formula. These infants need close monitoring of free thyroxine and TSH measurements, and they may need increased levothyroxine doses to achieve normal thyroid function tests.
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Affiliation(s)
- S C Conrad
- Department of Pediatrics, Northwestern University Medical School, Chicago, IL, USA.
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Chiu H. Role of tumor necrosis factor receptor 1 (p55) in hepatocyte proliferation during acetaminophen-induced toxicity in mice. Toxicol Appl Pharmacol 2003. [DOI: 10.1016/s0041-008x(03)00369-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bodian DL, Leung S, Chiu H, Govind S. Cytokines in Drosophila Hematopoiesis and Cellular Immunity. Invertebrate Cytokines and the Phylogeny of Immunity 2003; 34:27-46. [PMID: 14979663 DOI: 10.1007/978-3-642-18670-7_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hematopoiesis is a complex, multistep process in which progenitor cells undergo distinct cellular changes of proliferation and differentiation to give rise to mature blood cells in circulation. Many of the genetic and molecular events that drive these changes have been characterized in mammals, frogs, and zebra fish, and more recently in the insect model system Drosophila melanogaster. Blood cells in Drosophila are actively involved in fighting infections and the cellular immune responses are intimately tied to the process of hematopoiesis. In this article, we briefly review the fundamental similarities in Drosophila and mammalian hematopoiesis and highlight the potential roles of four cytokines/growth factors in Drosophila hematopoiesis and cellular immunity.
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Affiliation(s)
- D L Bodian
- Department of Biology J526, City College, Graduate Center of the City University of New York, 138th Street and Convent Avenue, New York, New York 10031, USA
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Chiu H, Govind S. Natural infection of D. melanogaster by virulent parasitic wasps induces apoptotic depletion of hematopoietic precursors. Cell Death Differ 2002; 9:1379-81. [PMID: 12478476 DOI: 10.1038/sj.cdd.4401134] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Affiliation(s)
- H Chiu
- City College of City University of New York, USA
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Abstract
Cardiac ventricular aneurysms are anomalous developments that are multifactorial in origin. Few pediatric cases have been cited. The majority of the cited cases have had negative consequences. We report an asymptomatic boy with an aneurysm incidentally found, and his identical twin brother with no evidence of aneurysm.
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Affiliation(s)
- H Chiu
- University of Illinois at Chicago Hospital, 1740 West Taylor Street, Chicago, IL 60612, USA
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Morio LA, Chiu H, Sprowles KA, Zhou P, Heck DE, Gordon MK, Laskin DL. Distinct roles of tumor necrosis factor-alpha and nitric oxide in acute liver injury induced by carbon tetrachloride in mice. Toxicol Appl Pharmacol 2001; 172:44-51. [PMID: 11264022 DOI: 10.1006/taap.2000.9133] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Macrophages are known to release a number of different inflammatory mediators with cytotoxic potential. In the present studies we analyzed the role of two macrophage-derived mediators, tumor necrosis factor-alpha (TNF-alpha) and nitric oxide, in liver injury induced by carbon tetrachloride (CCl4). Treatment of mice with CCl4 resulted in a dose- and time-dependent induction of centrilobular hepatic necrosis. This was observed within 12 h with 0.3 ml/kg CCl4 and was correlated with increases in serum transaminase levels. CCl4 administration also caused increases in hepatic TNF-alpha mRNA expression and serum TNF-alpha levels, as well as inducible nitric oxide synthase (NOS II) protein expression in the liver. To study the role of TNF-alpha and nitric oxide in hepatotoxicity, we used knockout mice lacking the gene for the 55-kDa TNF-alpha receptor (TNFR1/p55), the TNF-alpha cytokine, or NOS II. We found that CCl4 was significantly less effective in inducing hepatotoxicity in mice lacking TNFR1/p55 or the TNF-alpha cytokine. In contrast, CCl4-induced liver injury was increased in knockout mice lacking the gene for NOS II. This was associated with an increase in hepatic TNF-alpha mRNA expression and serum TNF-alpha levels. These data suggest that the hepatoprotective effects of nitric oxide in this model may be due in part to inhibition of TNF-alpha.
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Affiliation(s)
- L A Morio
- Environmental and Occupational Health Sciences Institute, Rutgers University and the University of Medicine and Dentistry of New Jersey- Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA
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Quasney MW, Goodman DM, Billow M, Chiu H, Easterling L, Frankel L, Habib D, Heitschmidt M, Kurachek S, Moler F, Montgomery V, Moss M, Murman S, Rice T, Richman B, Tilden S. Routine chest radiographs in pediatric intensive care units. Pediatrics 2001; 107:241-8. [PMID: 11158453 DOI: 10.1542/peds.107.2.241] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES To determine whether interventions were performed based on portable routine morning chest x-rays (CXRs) in pediatric intensive care unit (PICU) patients and to identify patient subgroups for whom the routine CXR is most useful. DESIGN Prospective multiinstitutional study. Setting. PICUs of 15 tertiary care hospitals. Patients. PICU patients who received a routine morning CXR were included in the study. OUTCOME MEASURES Recorded data included: weight, diagnosis, presence of active cardiopulmonary problems, length of stay, and number and type of devices. The number and types of interventions based on the interpretation of the CXR were recorded. RESULTS Five hundred twelve routine CXRs were evaluated. The majority of the routine chest radiographs were obtained on patients who were admitted for cardiovascular disease (195/512; 38%) or respiratory failure (186/512; 36%), and 465/512 of the routine CXRs (91%) were performed on patients with one or more devices. Two hundred thirty-one of the 512 routine CXRs (45%) resulted in 1 or more interventions. One hundred fifty-five of the 284 routine CXRs (55%) obtained in children </=10 kg resulted in one or more interventions, compared with 61/152 (40%) and 15/76 (20%) of routine CXRs obtained in children 10 to 40 kg and >/=40 kg, respectively. The frequency of interventions increased from 19% in children with no devices to >50% in children with 2 or more devices. One or more interventions were performed in 27% of routine CXRs when no active cardiopulmonary problems were present, compared with 51% of routine CXRs when active cardiopulmonary problems were present. Diagnosis and length of intensive care unit stay at the time the routine CXR was obtained did not affect the percentage of CXRs that resulted in interventions. CONCLUSIONS Routine CXRs are more likely to result in interventions in the smaller, critically ill child with one or more devices and if active cardiopulmonary problems are present.
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Affiliation(s)
- M W Quasney
- Department of Pediatrics, Crippled Children's Foundation Research Center, Le Bonheur Children's Medical Center, University of Tennessee, Memphis, Tennessee 38103, USA.
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Abstract
OBJECTIVE Epidemiological studies in the 1980s have suggested that depression is rare in the Chinese population and there is no postpartum depression among Chinese women. However, subsequent small-scale studies of postpartum depression in China have yielded contradictory and inconsistent findings. Furthermore, after two decades of profound socioeconomic transformation, depression may no longer be rare in the contemporary population. The authors conducted a psychiatric epidemiological study among postpartum Chinese women using rigorous methodology and a representative sample. METHOD A total of 959 consecutive women were recruited at the antenatal clinic of a university hospital in Hong Kong. At 3 months postpartum, the prevalence and incidence rates of depression were measured with a two-phase design. The participants were first stratified by means of the 12-item General Health Questionnaire. Subsequently, all high scorers and 10% of low scorers were assessed with the nonpatient version of the Structured Clinical Interview for DSM-III-R. The 1-month and 3-month prevalence and incidence rates were estimated by using reverse weighting. RESULTS The 1-month prevalence rates for major and minor depression were 5.5% and 4.7%, respectively. At 3 months, the corresponding prevalence rates were 6.1% and 5.1%. Together, 13.5% of the participants suffered from one or more forms of psychiatric disorder in the first 3 months postpartum. CONCLUSIONS Postpartum depression is common among contemporary Chinese women. A universal postpartum depression-screening program would be useful for early detection. Our data suggest that depression may no longer be rare in the Chinese population.
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Affiliation(s)
- D Lee
- Department of Social Medicine, Harvard Medical School, Boston, USA.
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Chiu H, Peters JW, Lanzilotta WN, Ryle MJ, Seefeldt LC, Howard JB, Rees DC. MgATP-Bound and nucleotide-free structures of a nitrogenase protein complex between the Leu 127 Delta-Fe-protein and the MoFe-protein. Biochemistry 2001; 40:641-50. [PMID: 11170380 DOI: 10.1021/bi001645e] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mutant form of the nitrogenase iron protein with a deletion of residue Leu 127, located in the switch II region of the nucleotide binding site, forms a tight, inactive complex with the nitrogenase molybdenum iron (MoFe) protein in the absence of nucleotide. The structure of this complex generated with proteins from Azotobacter vinelandii (designated the L127Delta-Av2-Av1 complex) has been crystallographically determined in the absence of nucleotide at 2.2 A resolution and with bound MgATP (introduced by soaking) at 3.0 A resolution. As observed in the structure of the complex between the wild-type A. vinelandii nitrogenase proteins stabilized with ADP.AlF(4-), the most significant conformational changes in the L127Delta complex occur in the Fe-protein component. While the interactions at the interface between the MoFe-protein and Fe-proteins are conserved in the two complexes, significant differences are evident at the subunit-subunit interface of the dimeric Fe-proteins, with the L127Delta-Av2 structure having a more open conformation than the wild-type Av2 in the complex stabilized by ADP.AlF(4-). Addition of MgATP to the L127Delta-Av2-Av1 complex results in a further increase in the separation between Fe-protein subunits so that the structure more closely resembles that of the wild-type, nucleotide-free, uncomplexed Fe-protein, rather than the Fe-protein conformation in the ADP.AlF(4-) complex. The L127Delta mutation precludes key interactions between the Fe-protein and nucleotide, especially, but not exclusively, in the region corresponding to the switch II region of G-proteins, where the deletion constrains Gly 128 and Asp 129 from forming hydrogen bonds to the gamma-phosphate and activating water for attack on this group, respectively. These alterations account for the inability of this mutant to support mechanistically productive ATP hydrolysis. The ability of the L127Delta-Av2-Av1 complex to bind MgATP demonstrates that dissociation of the nitrogenase complex is not required for nucleotide binding.
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Affiliation(s)
- H Chiu
- Division of Chemistry and Chemical Engineering, Mail Code 147-75CH, California Institute of Technology, Pasadena, California 91125, USA
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Strop P, Takahara PM, Chiu H, Angove HC, Burgess BK, Rees DC. Crystal structure of the all-ferrous [4Fe-4S]0 form of the nitrogenase iron protein from Azotobacter vinelandii. Biochemistry 2001; 40:651-6. [PMID: 11170381 DOI: 10.1021/bi0016467] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structure of the nitrogenase iron protein from Azotobacter vinelandii in the all-ferrous [4Fe-4S](0) form has been determined to 2.25 A resolution by using the multiwavelength anomalous diffraction (MAD) phasing technique. The structure demonstrates that major conformational changes are not necessary either in the iron protein or in the cluster to accommodate cluster reduction to the [4Fe-4S](0) oxidation state. A survey of [4Fe-4S] clusters coordinated by four cysteine ligands in proteins of known structure reveals that the [4Fe-4S] cluster of the iron protein has the largest accessible surface area, suggesting that solvent exposure may be relevant to the ability of the iron protein to exist in three oxidation states.
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Affiliation(s)
- P Strop
- Biochemistry Option, California Institute of Technology, Mail Code 147-75, Pasadena, California 91125, USA
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40
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Abstract
A pilot study on telepsychiatry was conducted in which a videoconferencing link was established between a regional hospital and a care and attention home. Using this system, a psychogeriatric outreach team provided 149 psychiatric assessments to 45 residents of the care and attention home over 11 months. Videoconferencing was found to be highly feasible. It was acceptable to staff and patients and more cost-effective than on-site visits.
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Affiliation(s)
- W K Tang
- Department of Psychiatry, Chinese University of Hong Kong, Hong Kong, China.
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41
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Morio LA, Chiu H, Sprowles KA, Laskin DL. Functional heterogeneity of rat hepatic and alveolar macrophages: effects of chronic ethanol administration. J Leukoc Biol 2000; 68:614-20. [PMID: 11073098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Chronic ethanol consumption is associated with increased incidence of hepatic and pulmonary infections. To determine if this is correlated with altered macrophage activity, we analyzed the functional properties of cells isolated sequentially from the liver and lung of rats fed a liquid diet containing ethanol (35% of calories) or malto-dextrin control for 9-12 weeks. Hepatic and alveolar macrophages from control animals were found to exhibit distinct morphologic and functional properties. Thus, hepatic macrophages were highly vacuolated and appeared larger and more irregular in shape than alveolar macrophages. These cells also displayed greater phagocytic activity and random migration. In contrast, lung macrophages produced more superoxide anion and nitric oxide, and exhibited enhanced chemotactic activity toward the complement fragment C5a. Whereas administration of ethanol to rats for 9-12 weeks resulted in decreased chemotaxis and superoxide anion production by alveolar macrophages, cell adhesion molecule expression was reduced in hepatic macrophages. Nitric oxide production and inducible nitric oxide synthase protein expression were decreased in both macrophage populations. These effects were not observed after 3-6 weeks of ethanol administration to rats. Our results suggest that changes in macrophage functioning may play a role in decreased host defense following chronic ethanol exposure.
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Affiliation(s)
- L A Morio
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey 08854-8020, USA
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42
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Chiu H, Lam L. P01.07 Rem-sleep behavior disorder in the elderly. Eur Psychiatry 2000. [DOI: 10.1016/s0924-9338(00)94418-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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43
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Abstract
The memory profile of acute and chronic schizophrenic patients was examined according to the information processing model, with which encoding, retention and retrieval processes of these patients were compared. The effects of an external organizational strategy on their verbal learning and memory were also examined. Twenty chronic and 20 acute schizophrenic patients were tested with a list learning task consisting of a random (i.e., words presented randomly) and a blocked (i.e., words presented in clusters) word-list. The schizophrenic patients, as compared with age- and education-matched normal control subjects, demonstrated impaired learning, and the duration of their illness was not a significant factor in the severity of their learning impairment. However, the acute and chronic schizophrenic patients seem able to retain most of the newly acquired materials, regardless of the presentation format, after 30 min. In addition, the learning and subjective organizational strategy of the chronic patients, but not that of the acute patients, improved significantly by the blocked presentation. However, semantic organization could facilitate both the chronic and acute schizophrenic patients to retain more newly learned items.
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Affiliation(s)
- A S Chan
- Department of Psychology, The Chinese University of Hong Kong.
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44
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Abstract
We report two boys diagnosed as having herpangina and hand-foot-mouth disease complicated by monoplegia during the outbreak enterovirus infection in Taiwan in 1998. Enterovirus 71 was identified in the stool and throat swab; neither polio nor Coxsackie viruses was identified. MRI showed unilateral lesions in the anterior horns of the spinal cord at T11-12 and C2-5. Although the MRI findings and sites of these lesions were similar to those of poliovirus-associated poliomyelitis, the virological data indicated that these boys were infected with enterovirus type 71.
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Affiliation(s)
- W C Shen
- Department of Radiology, and School of Medicine, China Medical College, China Medical College Hospital, No. 2 Yuh-Der Road, 407 Taichung, Taiwan, Republic of China.
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45
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Abstract
Isolated sleep paralysis (SP) is a common sleep phenomenon that is highly colored by indigenous beliefs. In Hong Kong Chinese, the 'ghost oppression phenomenon' (GO) has been shown to be descriptively identical to SP. The prevailing concept is that the majority of cases with SP have their onset during adolescence, but the lack of any systematic study on an older population means that late-onset cases can not be excluded. In a study investigating the prevalence of mental disorders in Chinese elderly aged above 70 y in Hong Kong, we employed the revised GO questionnaire to study the prevalence of SP in this group of elderly as well. One hundred and fifty-eight subjects were finally analyzed for the study. Almost 18% (95% C.I. 11.77%, 23.68%) of the subjects reported experiences of GO. Their description of the features of GO showed striking similarity to those of SP. There was a clear bimodal distribution of onset of GO with peaks during adolescence and after age 60 y. At least one-third of the cases were late onset. In concordance with the rapid eye movement (REM)/wakefulness dissociation hypothesis of SP, those elderly with GO+ experiences also had more frequent nocturnal sleep disturbances. A family history was reported in 10% of subjects.
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Affiliation(s)
- Y K Wing
- Department of Psychiatry, Prince of Wales Hospital, Chinese University of Hong Kong, China.
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46
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Laskin J, Gardner C, Heck D, Chiu H, Durham S, Laskin D. Mice lacking inducible nitric oxide synthase are protected from acetaminophen-induced hepato-toxicity. Toxicol Lett 1998. [DOI: 10.1016/s0378-4274(98)80448-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Chen L, Baum L, Ng HK, Chan YS, Mak YT, Woo J, Chiu H, Pang CP. No association detected between very-low-density lipoprotein receptor (VLDL-R) and late-onset Alzheimer's disease in Hong Kong Chinese. Neurosci Lett 1998; 241:33-6. [PMID: 9502209 DOI: 10.1016/s0304-3940(97)00975-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The epsilon4 allele of apolipoprotein E (ApoE) is a risk factor in late-onset Alzheimer's disease (AD). As a receptor for ApoE, very-low-density lipoprotein receptor (VLDLR) might be involved in AD pathogenesis. A Japanese study [Okuizimi, K., et al., Nature Genet., 11 (1995) 207-209] has shown an increased 5 and decreased 8 CGG-repeat allele frequency in the 5' untranslated region of VLDLR in Japanese AD versus normal controls (N). Subsequent studies in Caucasian Americans failed to duplicate the result. We examined this polymorphism in pathologically- or clinically-diagnosed Chinese late-onset AD. Our data did not show a significant increase in the 5 CGG-repeat in AD, thus suggesting no association to VLDLR. However, our data did show that the allele frequencies for each CGG-repeat were similar in both Chinese and Japanese.
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Affiliation(s)
- L Chen
- Department of Anatomical and Cellular Pathology, Chinese University of Hong Kong, Shatin
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48
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Chen AG, Wing YK, Chiu H, Lee S, Chen CN, Chan K. Simultaneous determination of imipramine, desipramine and their 2- and 10-hydroxylated metabolites in human plasma and urine by high-performance liquid chromatography. J Chromatogr B Biomed Sci Appl 1997; 693:153-8. [PMID: 9200529 DOI: 10.1016/s0378-4347(97)00053-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A simultaneous assay for imipramine, desipramine and their 2- and 10-hydroxy-metabolites using high-performance liquid chromatography (HPLC) is described. The drugs and internal standard, pericyazine, were extracted from plasma or urine at pH 9.6 with diethyl ether and back-extracted into 0.1 M orthophosphoric acid. The recovery of the compounds ranged from 78.6% for imipramine to 94.3% for 2-hydroxydesipramine. The extracts were analysed by reversed-phase HPLC with electrochemical detection using a mobile phase of 30% acetonitrile in 0.1 M K2HPO4 at pH 6.0 delivered at 2 ml/min. All compounds were resolved in a run time of 15 min with lower limits of quantification of 1.5 ng/ml for hydroxy-metabolites and 3 ng/ml for imipramine and desipramine. The intra- and inter-day coefficients of variation at 50 ng/ml were 5.2% and 6.8%, respectively (n=8).
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Affiliation(s)
- A G Chen
- School of Pharmacy and Chemistry, Liverpool John Moores University, UK
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49
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Lawson KF, Chiu H, Crosgrey SJ, Matson M, Casey GA, Campbell JB. Duration of immunity in foxes vaccinated orally with ERA vaccine in a bait. Can J Vet Res 1997; 61:39-42. [PMID: 9008799 PMCID: PMC1189367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Red foxes (Vulpes vulpes) vaccinated orally with the ERA strain of rabies vaccine in a bait were challenged after 83 mo. Ten of 11 foxes that had seroconverted following vaccination resisted challenge with a virulent rabies virus which produced clinical signs of rabies in 6 of 6 unvaccinated foxes. Five of 11 vaccinated animals retained titers of rabies virus neutralizing antibody throughout the period. Although 6 of 11 had no detectable antibody at the time of challenge, 5 of these 6 resisted challenge and had an anamnestic response, as indicated by elevated titers of antibody when measured at day 77 postchallenge. These results show that foxes can be immunized successfully with a single oral dose of ERA vaccine, probably with protection against a lethal rabies challenge, for at least 7 y.
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Affiliation(s)
- K F Lawson
- Ontario Ministry of Natural Resources, Wildlife and Natural Heritage Science Section, Maple
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50
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Mak YT, Chiu H, Woo J, Kay R, Chan YS, Hui E, Sze KH, Lum C, Kwok T, Pang CP. Apolipoprotein E genotype and Alzheimer's disease in Hong Kong elderly Chinese. Neurology 1996; 46:146-9. [PMID: 8559364 DOI: 10.1212/wnl.46.1.146] [Citation(s) in RCA: 39] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We studied the apolipoprotein E (apoE) allele frequencies in 65 Chinese patients with late-onset Alzheimer's disease (AD) and 82 age- and sex-matched controls. The apoE epsilon 4 allele frequency was significantly higher in the AD group than in the control group (0.169 versus, p < 0.01). There were five homozygotes for epsilon 4 in the AD group but none among the controls. The odds ratio for AD was 1.6 for epsilon 4 heterozygotes. The age at onset was lower in the presence of the epsilon 4 allele and higher with the epsilon 2 allele, although neither of these differences reached statistical significance. The association between apoE alleles and AD previously reported in Caucasian populations was also present in this reports of lower prevalence of AD compared with the prevalence of multi-infarct dementia.
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Affiliation(s)
- Y T Mak
- Department of Chemical Pathology, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, NT, Hong Kong
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