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Wang HF, Liu WC, Zailani H, Yang CC, Chen TB, Chang CM, Tsai IJ, Yang CP, Su KP. A 12-week randomized double-blind clinical trial of eicosapentaenoic acid intervention in episodic migraine. Brain Behav Immun 2024; 118:459-467. [PMID: 38499208 DOI: 10.1016/j.bbi.2024.03.019] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024] Open
Abstract
Omega-3 polyunsaturated fatty acids (PUFAs) may benefit migraine improvement, though prior studies are inconclusive. This study evaluated the effect of eicosapentaenoic acid (EPA) on episodic migraine (EM) prevention. Seventy individuals with EM participated in a 12-week randomized, double-blind, placebo-controlled trial from March 2020 and May 2022. They were randomly assigned to either the EPA (N = 35, 2 g fish oil with 1.8 g of EPA as a stand-alone treatment daily), or the placebo group (N = 35, 2 g soybean oil daily). Migraine frequency and headache severity were assessed using the monthly migraine days, visual analog scale (VAS), Migraine Disability Assessment (MIDAS), Hospital Anxiety and Depression Scale (HADS), Migraine-Specific Quality-of-Life Questionnaire (MSQ), and Pittsburgh Sleep Quality Index (PSQI) in comparison to baseline measurements. The EPA group significantly outperformed the placebo in reducing monthly migraine days (-4.4 ± 5.1 days vs. - 0.6 ± 3.5 days, p = 0.001), days using acute headache medication (-1.3 ± 3.0 days vs. 0.1 ± 2.3 days, p = 0.035), improving scores for headache severity (ΔVAS score: -1.3 ± 2.4 vs. 0.0 ± 2.2, p = 0.030), disability (ΔMIDAS score: -13.1 ± 16.2 vs. 2.6 ± 20.2, p = 0.001), anxiety and depression (ΔHADS score: -3.9 ± 9.4 vs. 1.1 ± 9.1, p = 0.025), and quality of life (ΔMSQ score: -11.4 ± 19.0 vs. 3.1 ± 24.6, p = 0.007). Notably, female particularly benefited from EPA, underscoring its potential in migraine management. In conclusion, high-dose EPA has significantly reduced migraine frequency and severity, improved psychological symptoms and quality of life in EM patients, and shown no major adverse events, suggesting its potential as a prophylactic for EM.
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Affiliation(s)
- Hsueh-Fang Wang
- Department of Nutrition, Hungkuang University, Taichung, Taiwan
| | - Wen-Chun Liu
- An Nan Hospital, China Medical University, Tainan, Taiwan; Mind-Body Interface Research Center (MBI-Lab), China Medical University Hospital, Taichung, Taiwan
| | - Halliru Zailani
- Mind-Body Interface Research Center (MBI-Lab), China Medical University Hospital, Taichung, Taiwan; Graduate Institute of Nutrition, China Medical University, Taichung, Taiwan
| | - Cheng-Chia Yang
- Department of Healthcare Administration, Asia University, Taichung, Taiwan
| | - Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Mao Chang
- Center for Traditional Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Traditional Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - I-Ju Tsai
- Department of Neurology, Kuang Tien General Hospital, Taichung, Taiwan; Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan; Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Pai Yang
- Department of Neurology, Kuang Tien General Hospital, Taichung, Taiwan; Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan.
| | - Kuan-Pin Su
- An Nan Hospital, China Medical University, Tainan, Taiwan; Mind-Body Interface Research Center (MBI-Lab), China Medical University Hospital, Taichung, Taiwan; Institute of Psychiatry, King's College London, London, UK; College of Medicine, China Medical University, Taichung, Taiwan.
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Zhou ZD, Lei T, Shi YQ, Li Q, Chen TB. [Pelvic and celiac YWHAE-NUTM2B fusion positive high-grade endometrial stromal sarcoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2024; 53:406-409. [PMID: 38556830 DOI: 10.3760/cma.j.cn112151-20231026-00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Affiliation(s)
- Z D Zhou
- Department of Pathology, the Third Afiliated Hospital of Sochow University, Changzhou First People's Hospital, Changzhou 213000, China
| | - T Lei
- Department of Pathology, the Third Afiliated Hospital of Sochow University, Changzhou First People's Hospital, Changzhou 213000, China
| | - Y Q Shi
- Department of Pathology, the Third Afiliated Hospital of Sochow University, Changzhou First People's Hospital, Changzhou 213000, China
| | - Q Li
- Department of Pathology, the Third Afiliated Hospital of Sochow University, Changzhou First People's Hospital, Changzhou 213000, China
| | - T B Chen
- Department of Pathology, the Third Afiliated Hospital of Sochow University, Changzhou First People's Hospital, Changzhou 213000, China
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Chen TB, Chang CM, Yang CC, Tsai IJ, Wei CY, Yang HW, Yang CP. Neuroimmunological Effect of Vitamin D on Neuropsychiatric Long COVID Syndrome: A Review. Nutrients 2023; 15:3802. [PMID: 37686834 PMCID: PMC10490318 DOI: 10.3390/nu15173802] [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: 08/03/2023] [Revised: 08/26/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the coronavirus disease 2019 (COVID-19). COVID-19 is now recognized as a multiorgan disease with a broad spectrum of manifestations. A substantial proportion of individuals who have recovered from COVID-19 are experiencing persistent, prolonged, and often incapacitating sequelae, collectively referred to as long COVID. To date, definitive diagnostic criteria for long COVID diagnosis remain elusive. An emerging public health threat is neuropsychiatric long COVID, encompassing a broad range of manifestations, such as sleep disturbance, anxiety, depression, brain fog, and fatigue. Although the precise mechanisms underlying the neuropsychiatric complications of long COVID are presently not fully elucidated, neural cytolytic effects, neuroinflammation, cerebral microvascular compromise, breakdown of the blood-brain barrier (BBB), thrombosis, hypoxia, neurotransmitter dysregulation, and provoked neurodegeneration are pathophysiologically linked to long-term neuropsychiatric consequences, in addition to systemic hyperinflammation and maladaptation of the renin-angiotensin-aldosterone system. Vitamin D, a fat-soluble secosteroid, is a potent immunomodulatory hormone with potential beneficial effects on anti-inflammatory responses, neuroprotection, monoamine neurotransmission, BBB integrity, vasculometabolic functions, gut microbiota, and telomere stability in different phases of SARS-CoV-2 infection, acting through both genomic and nongenomic pathways. Here, we provide an up-to-date review of the potential mechanisms and pathophysiology of neuropsychiatric long COVID syndrome and the plausible neurological contributions of vitamin D in mitigating the effects of long COVID.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung 407219, Taiwan;
| | - Ching-Mao Chang
- Center for Traditional Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan;
- Faculty of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
- Institute of Traditional Medicine, National Yang Ming Chiao Tung University, Taipei 11217, Taiwan
| | - Cheng-Chia Yang
- Department of Healthcare Administration, Asia University, Taichung 41354, Taiwan;
| | - I-Ju Tsai
- Department of Medical Research, Kuang Tien General Hospital, Taichung 433, Taiwan;
| | - Cheng-Yu Wei
- Department of Exercise and Health Promotion, College of Kinesiology and Health, Chinese Culture University, Taipei 11114, Taiwan
- Department of Neurology, Chang Bing Show Chwan Memorial Hospital, Changhua 50544, Taiwan
| | - Hao-Wen Yang
- Department of Family Medicine, Kuang Tien General Hospital, Taichung 433, Taiwan
| | - Chun-Pai Yang
- Department of Medical Research, Kuang Tien General Hospital, Taichung 433, Taiwan;
- Department of Neurology, Kuang Tien General Hospital, Taichung 433, Taiwan
- Department of Nutrition, HungKuang University, Taichung 433, Taiwan
- Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan
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Chen SY, Chen HC, Chen TB. Rapid Progressive Fatal Acute Hemorrhagic Encephalomyelitis. Diagnostics (Basel) 2023; 13:2481. [PMID: 37568845 PMCID: PMC10417807 DOI: 10.3390/diagnostics13152481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023] Open
Abstract
Acute hemorrhagic encephalomyelitis (AHEM) is the most severe form of acute disseminated encephalomyelitis (ADEM). Patients with AHEM usually have unfavorable outcomes with high mortality rate. We reported a middle-aged male, who was diagnosed with AHEM and died 35 days after admission even under intensive immune therapy. Clinical courses were recorded and serial MR images were demonstrated to illustrate the rapidly changes in brain parenchyma. By highlighting these aspects, we hope to provide valuable insights for future studies and potential advancements in the management of AHEM.
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Affiliation(s)
- Ssu-Yu Chen
- School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
| | - Hung-Chieh Chen
- Division of Neuroradiology, Department of Radiology, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112304, Taiwan;
| | - Ting-Bin Chen
- School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112304, Taiwan;
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- Dementia and Parkinson’s Disease Integrated Center, Taichung Veterans General Hospital, Taichung 407219, Taiwan
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung 407219, Taiwan
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Yan YH, Chen TB, Yang CP, Tsai IJ, Yu HL, Wu YS, Huang WJ, Tseng ST, Peng TY, Chou EP. Long-term exposure to particulate matter was associated with increased dementia risk using both traditional approaches and novel machine learning methods. Sci Rep 2022; 12:17130. [PMID: 36224306 PMCID: PMC9556552 DOI: 10.1038/s41598-022-22100-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 10/10/2022] [Indexed: 02/05/2023] Open
Abstract
Air pollution exposure has been linked to various diseases, including dementia. However, a novel method for investigating the associations between air pollution exposure and disease is lacking. The objective of this study was to investigate whether long-term exposure to ambient particulate air pollution increases dementia risk using both the traditional Cox model approach and a novel machine learning (ML) with random forest (RF) method. We used health data from a national population-based cohort in Taiwan from 2000 to 2017. We collected the following ambient air pollution data from the Taiwan Environmental Protection Administration (EPA): fine particulate matter (PM2.5) and gaseous pollutants, including sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3), nitrogen oxide (NOx), nitric oxide (NO), and nitrogen dioxide (NO2). Spatiotemporal-estimated air quality data calculated based on a geostatistical approach, namely, the Bayesian maximum entropy method, were collected. Each subject's residential county and township were reviewed monthly and linked to air quality data based on the corresponding township and month of the year for each subject. The Cox model approach and the ML with RF method were used. Increasing the concentration of PM2.5 by one interquartile range (IQR) increased the risk of dementia by approximately 5% (HR = 1.05 with 95% CI = 1.04-1.05). The comparison of the performance of the extended Cox model approach with the RF method showed that the prediction accuracy was approximately 0.7 by the RF method, but the AUC was lower than that of the Cox model approach. This national cohort study over an 18-year period provides supporting evidence that long-term particulate air pollution exposure is associated with increased dementia risk in Taiwan. The ML with RF method appears to be an acceptable approach for exploring associations between air pollutant exposure and disease.
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Affiliation(s)
- Yuan-Horng Yan
- grid.415517.30000 0004 0572 8068Department of Endocrinology and Metabolism, Kuang Tien General Hospital, Taichung, Taiwan ,grid.415517.30000 0004 0572 8068Department of Medical Research, Kuang Tien General Hospital, Taichung, Taiwan ,grid.411432.10000 0004 1770 3722Institute of Biomedical Nutrition, Hungkuang University, Taichung, Taiwan
| | - Ting-Bin Chen
- grid.410764.00000 0004 0573 0731Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan ,grid.411432.10000 0004 1770 3722Department of Applied Cosmetology, Hungkuang University, Taichung, Taiwan
| | - Chun-Pai Yang
- grid.415517.30000 0004 0572 8068Department of Medical Research, Kuang Tien General Hospital, Taichung, Taiwan ,grid.411432.10000 0004 1770 3722Institute of Biomedical Nutrition, Hungkuang University, Taichung, Taiwan ,grid.415517.30000 0004 0572 8068Department of Neurology, Kuang Tien General Hospital, Taichung, Taiwan
| | - I-Ju Tsai
- grid.415517.30000 0004 0572 8068Department of Medical Research, Kuang Tien General Hospital, Taichung, Taiwan
| | - Hwa-Lung Yu
- grid.19188.390000 0004 0546 0241Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
| | - Yuh-Shen Wu
- grid.411432.10000 0004 1770 3722Department of Safety, Health, and Environmental Engineering, Hungkuang University, Taichung, Taiwan
| | - Winn-Jung Huang
- grid.411432.10000 0004 1770 3722Department of Safety, Health, and Environmental Engineering, Hungkuang University, Taichung, Taiwan
| | - Shih-Ting Tseng
- grid.415517.30000 0004 0572 8068Division of Endocrinology and Metabolism, Department of Internal Medicine, Kuang Tien General Hospital, Taichung, Taiwan ,Jenteh Junior College of Medicine, Nursing and Management, Miaoli County, Taiwan
| | - Tzu-Yu Peng
- grid.412042.10000 0001 2106 6277Department of Statistics, National Chengchi University, No. 64, Sec. 2, Zhinan Rd., Wenshan Dist., Taipei City, 116 Taiwan
| | - Elizabeth P. Chou
- grid.412042.10000 0001 2106 6277Department of Statistics, National Chengchi University, No. 64, Sec. 2, Zhinan Rd., Wenshan Dist., Taipei City, 116 Taiwan
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Chen TB, Lee WJ, Chen JP, Chang SY, Lin CF, Chen HC. Imaging markers of cerebral amyloid angiopathy and hypertensive arteriopathy differentiate Alzheimer disease subtypes synergistically. Alzheimers Res Ther 2022; 14:141. [PMID: 36180874 PMCID: PMC9524061 DOI: 10.1186/s13195-022-01083-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022]
Abstract
Background Both cerebral amyloid angiopathy (CAA) and hypertensive arteriopathy (HA) are related to cognitive impairment and dementia. This study aimed to clarify CAA- and HA-related small vessel disease (SVD) imaging marker associations with cognitive dysfunction and Alzheimer disease (AD) subtypes. Methods A sample of 137 subjects with clinically diagnosed late-onset AD identified from the dementia registry of a single center from January 2017 to October 2021 were enrolled. Semi-quantitative imaging changes (visual rating scale grading) suggestive of SVD were analyzed singularly and compositely, and their correlations with cognitive domains and AD subtypes were examined. Results Patients with typical and limbic-predominant AD subtypes had worse cognitive performance and higher dementia severity than minimal-atrophy subtype patients. Deep white matter hyperintensity (WMH) presence correlated inversely with short-term memory (STM) performance. The three composite SVD scores correlated with different cognitive domains and had distinct associations with AD subtypes. After adjusting for relevant demographic factors, multivariate logistic regression (using minimal-atrophy subtype as the reference condition) revealed the following: associations of the typical subtype with periventricular WMH [odds ratio (OR) 2.62; 95% confidence interval (CI), 1.23–5.57, p = 0.012], global SVD score (OR 1.67; 95%CI, 1.11–2.52, p = 0.009), and HA-SVD score (OR 1.93; 95%CI, 1.10–3.52, p = 0.034); associations of limbic-predominant subtype with HA-SVD score (OR 2.57; 95%CI, 1.23–5.37, p = 0.012) and most global and domain-specific cognitive scores; and an association of hippocampal-sparing subtype with HA-SVD score (OR 3.30; 95%CI, 1.58–6.85, p = 0.001). Conclusion Composite SVD imaging markers reflect overall CAA and/or HA severity and may have differential associations with cognitive domains and AD subtypes. Our finding supports the possibility that the clinical AD subtypes may reflect differing burdens of underlying CAA and HA microangiopathologies. Supplementary Information The online version contains supplementary material available at 10.1186/s13195-022-01083-8.
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Chen TB, Jing ZC, Fang Q, Zhang SY. [Issues should be concerned on the anticoagulation treatment in elderly patients with atrial fibrillation]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:20-24. [PMID: 35045610 DOI: 10.3760/cma.j.cn112148-20210225-00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- T B Chen
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z C Jing
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Q Fang
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100730, China
| | - S Y Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100730, China
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Lin CY, Jhan SR, Lee WJ, Chen PL, Chen JP, Chen HC, Chen TB. Imaging Markers of Subcortical Vascular Dementia in Patients With Multiple-Lobar Cerebral Microbleeds. Front Neurol 2021; 12:747536. [PMID: 34867731 PMCID: PMC8636110 DOI: 10.3389/fneur.2021.747536] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/08/2021] [Indexed: 01/16/2023] Open
Abstract
Background and Purpose: Small vessel disease (SVD) imaging markers are related to ischemic and hemorrhage stroke and to cognitive dysfunction. This study aimed to clarify the relationship between SVD imaging markers and subcortical vascular dementia in severe SVD burden. Methods: A total of 57 subjects with multiple lobar cerebral microbleeds (CMBs) and four established SVD imaging markers were enrolled from the dementia and stroke registries of a single center. Visual rating scales that are used to semi-quantify SVD imaging changes were analyzed individually and compositely to make correlations with cognitive domains and subcortical vascular dementia. Results: Dementia group had higher subcortical and total white matter hyperintensities (WMHs) and SVD composite scores than non-dementia group. Individual imaging markers correlated differently with one another and had distinct cognitive correlations. After adjusting for demographic factors, multivariate logistic regression indicated associations of subcortical WMHs (odds ratio [OR] 2.03, CI 1.24–3.32), total WMHs (OR 1.43, CI 1.09–1.89), lacunes (OR 1.18, CI 1.02–1.35), cerebral amyloid angiopathy-SVD scores (OR 2.33, CI 1.01–5.40), C1 scores (imaging composite scores of CMB and WMH) (OR 1.41, CI 1.09–1.83), and C2 scores (imaging composite scores of CMB, WMH, perivascular space, and lacune) (OR 1.38, CI 1.08–1.76) with dementia. Conclusions: SVD imaging markers might have differing associations with cognitive domains and dementia. They may provide valuable complementary information in support of personalized treatment planning against cognitive impairment, particularly in patients with a heavy SVD load.
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Affiliation(s)
- Chia-Yen Lin
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Song-Ru Jhan
- Division of Neuroradiology, Department of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Wei-Ju Lee
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan.,Dementia Center, Taichung Veterans General Hospital, Taichung, Taiwan.,School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Po-Lin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan.,School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Jun-Peng Chen
- Biostatistics Task Force of Taichung Veterans General Hospital, Taichung, Taiwan
| | - Hung-Chieh Chen
- Division of Neuroradiology, Department of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan.,School of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan.,Dementia Center, Taichung Veterans General Hospital, Taichung, Taiwan.,Department of Applied Cosmetology, Hungkuang University, Taichung, Taiwan
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Peng Y, Lei T, Wu C, Wang H, Shi YQ, Xia CY, Chen TB. [Clinicopathological analysis of amphicrine carcinoma of the stomach]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1269-1271. [PMID: 34719168 DOI: 10.3760/cma.j.cn112151-20210415-00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Peng
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - T Lei
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - C Wu
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - H Wang
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - Y Q Shi
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - C Y Xia
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
| | - T B Chen
- Department of Pathology, the Third Affiliated Hospital of Soochow University/Changzhou First People's Hospital, Changzhou 213000, Jiangsu Province, China
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Chen TB, Lin KJ, Lin SY, Lee YJ, Lin YC, Wang CY, Chen JP, Wang PN. Prediction of Cerebral Amyloid Pathology Based on Plasma Amyloid and Tau Related Markers. Front Neurol 2021; 12:619388. [PMID: 34671305 PMCID: PMC8520900 DOI: 10.3389/fneur.2021.619388] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 09/07/2021] [Indexed: 11/26/2022] Open
Abstract
Background and Purpose: Pyroglutamate-modified β-amyloid peptide (AβpE) is crucial for AD pathophysiological process. The potential associations of plasma AβpE and total tau (t-tau) with brain Aβ burden and cognitive performance remain to be clarified. Methods: Forty-six subjects with unimpaired cognition, mild cognitive impairment, or very mild dementia were enrolled. Plasma levels of AβpE3−40, t-tau, and Aβ42 were quantified by immunomagnetic reduction (IMR) assays. We analyzed individual and combined biomarker correlations with neuropsychological scores and Aβ positivity determined by 18F-florbetapir positron emission tomography (PET). Results: Both plasma AβpE3−40 levels and AβpE3−40/t-tau ratios correlated negatively with short-term memory and global cognition scores, while correlating positively with PET standardized uptake value ratios (SUVRs). Among the biomarkers analyzed, the combination of AβpE3−40 in a ratio with t-tau had the best discriminatory ability for Aβ PET positivity. Likewise, logistic regression analysis showed that AβpE3−40/t-tau was a highly robust predictor of Aβ PET positivity after controlling for relevant demographic covariates. Conclusion: Plasma AβpE3−40/t-tau ratios correlate with cognitive function and cerebral Aβ burden. The suitability of AβpE3−40/t-tau as a candidate clinical biomarker of AD pathology in the brain should be examined further in larger studies.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan.,Dementia Center, Taichung Veterans General Hospital, Taichung, Taiwan.,Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Kun-Ju Lin
- Department of Nuclear Medicine and Molecular Imaging Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Healthy Aging Research Center and Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Szu-Ying Lin
- Taipei Municipal Gan-Dau Hospital, Taipei, Taiwan
| | - Yi-Jung Lee
- Division of Neurology, Department of Medicine, Taipei City Hospital Renai Branch, Taipei, Taiwan
| | - Yi-Cheng Lin
- Taipei Municipal Gan-Dau Hospital, Taipei, Taiwan.,School of Life Sciences, Institute of Neuroscience, National Yang-Ming University, Taipei, Taiwan
| | - Chen-Yu Wang
- Division of General Neurology, Department of Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jun-Peng Chen
- Biostatistics Task Force of Taichung Veterans General Hospital, Taichung, Taiwan
| | - Pei-Ning Wang
- Division of General Neurology, Department of Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
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Chang CC, Chan L, Chou HH, Yang YW, Chen TF, Chen TB, Chen CI, Yang A, Hu CJ. Effectiveness of the 10 cm 2 Rivastigmine Patch in Taiwanese Patients with Mild-to-Moderate Alzheimer's Dementia: A 48-Week Real-World Observational Study. Adv Ther 2021; 38:5286-5301. [PMID: 34506009 PMCID: PMC8478746 DOI: 10.1007/s12325-021-01893-6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/11/2021] [Indexed: 11/28/2022]
Abstract
Introduction The current study aimed to provide data on the effectiveness of the 10 cm2 rivastigmine patch in patients with Alzheimer’s disease (AD) in a real-world setting in Taiwan. Methods This was a 48-week, single-arm, open-label, observational, and post-marketing study conducted across seven centers in Taiwan between May 5, 2016 and July 10, 2017. Eligible patients (aged 55–95 years) treated with the 10 cm2rivastigmine patch were enrolled based on physicians’ judgment and according to the Taiwan reimbursement criteria of the drug. Data were prospectively collected at Week 0 (baseline), Week 24, and Week 48. The primary endpoint was the change in the cognitive assessment screening instrument (CASI) scores at Week 48 versus baseline. The changes from baseline in clinical dementia rating (CDR), mini-mental state examination (MMSE), and neuropsychiatric inventory (NPI) scores were evaluated, as were treatment persistence and the safety profile. Results Of the 285 eligible patients [full analysis set (FAS)], 216 (75.8%) completed the study protocol while 180 (63.2%) persisted on the 10 cm2 rivastigmine patch for the full 48 weeks. At baseline, 89.8% of patients had a CDR score of 0.5 or 1, while the change in CDR score at Week 48 was not significant. In the FAS, both the CASI and MMSE scores had numerical improvement at Week 24 but declined by 2.1 and 0.4 points, respectively, at Week 48 (p = 0.005 and p = 0.022). The increment in NPI scores was not significant. The most common drug-related adverse events (AEs) were pruritus (11.2%), nausea (3.5%), rash (3.2%), and vomiting (2.8%). Conclusions The use of the 10 cm2 rivastigmine patch in the mild stage of AD maintained cognitive function at Week 24 and neuropsychiatric function at Week 48. The treatment persistency and safety profile support the clinical tolerability of the rivastigmine patch in the management of mild-to-moderate AD in Taiwan. Supplementary Information The online version contains supplementary material available at 10.1007/s12325-021-01893-6.
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Affiliation(s)
- Chiung-Chih Chang
- Department of Neurology, Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Lung Chan
- Department of Neurology and Dementia Center, Shung Ho Hospital, School of Medicine, College of Medicine, Taipei Medical University, New Taipei, Taiwan
| | - Hsi-Hsien Chou
- Department of Neurology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yu-Wan Yang
- Department of Neurology, China Medical University Hospital, Taichung, Taiwan
| | - Ta-Fu Chen
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ting-Bin Chen
- Department of Neurology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chin-I Chen
- Department of Neurology, Wan Fang Hospital, Taipei, Taiwan
| | | | - Chaur-Jong Hu
- Department of Neurology and Dementia Center, Shung Ho Hospital, School of Medicine, College of Medicine, Taipei Medical University, New Taipei, Taiwan.
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12
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Zheng XZ, Ma JH, Chen TB, Xu F, Zou ZY, Zhang LH, Jin YL, Zhan Y. [Application of molecular analysis in differential diagnosis of ovarian adult granulosa cell tumors]. Zhonghua Bing Li Xue Za Zhi 2020; 49:794-799. [PMID: 32746545 DOI: 10.3760/cma.j.cn112151-20200313-00198] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the application value of molecular detection in the differential diagnosis of ovarian adult granulosa cell tumors (AGCT) by analyzing FOXL2, AKT1 and DICER1 mutations in these tumors. Methods: A total of 48 cases of ovarian sex cord-stromal tumor (SCST) were selected from July 2012 to June 2019 in Beijing Obstetrics and Gynecology Hospital, including 21 adult granulosa cell tumors (AGCT), 15 fibromas/fibrothecomas, 8 Sertoli-Leydig cell tumors (SLCT) and 4 other types of ovarian SCST. Genomic DNA was extracted from the formalin-fixed paraffin-embedded tissue sections. Polymerase chain reaction amplification for FOXL2, AKT1 and DICER1 genes was performed, followed by sequencing using capillary electrophoresis. Fisher exact test was used to compare the prevalence difference of FOXL2, AKT1 and DICER1 mutations among the groups. P<0.05 was considered significant. Results: Eighteen of the 21 (85.7%) AGCT harbored FOXL2 mutation. Compared with other SCST (13.0%, 3 of 23; including fibromas/fibrothecomas and SLCT), FOXL2 mutation was significantly higher in AGCT (P<0.001). In addition, FOXL2 mutation was also detected in one fibrothecoma, two SLCT and two gynandroblastomas. DICER1 mutation was identified in four of eight SLCT, and these cases were moderately to poorly differentiated. FOXL2 mutation was found in one SLCT with DICER1 mutation. There was no DICER1 mutation in other ovarian SCST. No AKT1 mutation was detected in all the patients. Conclusions: FOXL2 mutation is a highly specific biomarker for adult AGCT and may be helpful to resolve problematic cases. Diagnosis should also be taken into consideration of the clinical and histological features as FOXL2 mutation is also found in other SCST. The detection of DICER1 mutation is helpful for the differential diagnosis of ovarian SLCT. Synchronous DICER1 and FOXL2 mutation in the SLCT has been observed, and its significance needs to be further studied.
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Affiliation(s)
- X Z Zheng
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - J H Ma
- Department of Basic Medical Sciences, Health School, Capital Medical University, Beijing 100070, China
| | - T B Chen
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - F Xu
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - Z Y Zou
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - L H Zhang
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - Y L Jin
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
| | - Y Zhan
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, China
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Chen TB, Lai YH, Ke TL, Chen JP, Lee YJ, Lin SY, Lin PC, Wang PN, Cheng IH. Changes in Plasma Amyloid and Tau in a Longitudinal Study of Normal Aging, Mild Cognitive Impairment, and Alzheimer's Disease. Dement Geriatr Cogn Disord 2020; 48:180-195. [PMID: 31991443 DOI: 10.1159/000505435] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/15/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Changes in cerebrospinal fluid, neuroimaging, and cognitive functions have been used as diagnostic biomarkers of Alzheimer's disease (AD). This study aimed to investigate the temporal trajectories of plasma biomarkers in subjects with mild cognitive impairment (MCI) and patients with AD relative to healthy controls (HCs). METHODS In this longitudinal study, 82 participants (31 HCs, 33 MCI patients, and 18 AD patients) were enrolled. After 3 years, 7 HCs had transitioned to MCI and 10 subjects with MCI had converted to AD. We analyzed plasma amyloid beta (Aβ) and tau proteins at baseline and annually to correlate with biochemical data and neuropsychological scores. RESULTS Longitudinal data analysis showed an evolution of Aβ-related biomarkers over time within patients, whereas tau-related biomarkers differed primarily across diagnostic classifications. An initial steady increase in Aβ42 in the MCI stage was followed by a decrease just prior to clinical AD onset. Hyperphosphorylated tau protein levels correlated with cognitive decline in the MCI stage, but not in the AD stage. CONCLUSION Plasma Aβ and tau levels change in a dynamic, nonlinear, nonparallel manner over the AD continuum. Changes in plasma Aβ concentration are time-dependent, whereas changes in hyperphosphorylated tau protein levels paralleled the clinical progression of MCI. It remains to be clarified whether diagnostic efficiency can be improved by combining multiple plasma markers or combining plasma markers with other diagnostic biomarkers.
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Affiliation(s)
- Ting-Bin Chen
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan.,Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan.,Dementia and Parkinson's Disease Integrated Center, Taichung Veterans General Hospital, Taichung, Taiwan.,Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yu-Hua Lai
- Department of Neurology, Cheng-Hsin General Hospital, Taipei, Taiwan
| | - Ting-Ling Ke
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| | - Jun-Peng Chen
- Biostatistics Task Force of Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Jung Lee
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan.,Division of Neurology, Department of Medicine, Taipei City Hospital Renai Branch, Taipei, Taiwan
| | - Szu-Ying Lin
- Taipei Municipal Gan-Dau Hospital, Taipei, Taiwan
| | - Po-Chen Lin
- Division of General Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Pei-Ning Wang
- Division of General Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Aging and Health Research Center, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Irene H Cheng
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan, .,Brain Research Center, National Yang-Ming University, Taipei, Taiwan,
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Chen TB, Weng SC, Chou YY, Lee YS, Liang CK, Lin CS, Lan TH, Lin SY, Lin YT. Predictors of Mortality in the Oldest Old Patients with Newly Diagnosed Alzheimer Disease in a Residential Aged Care Facility. Dement Geriatr Cogn Disord 2020; 48:93-104. [PMID: 31600747 DOI: 10.1159/000503059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/01/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In Taiwan, the causes of death and related factors in the oldest old people with Alzheimer disease (AD) are not well characterized. We investigated the factors associated with mortality in the oldest old patients with newly diagnosed AD admitted to a long-stay residential facility. METHODS We performed a prospective study of newly diagnosed AD patients at a veterans' home between 2012 and 2016. At admission, all eligible participants received a comprehensive geriatric assessment, including demographic variables, lifestyle habits, cognitive evaluations, medical conditions (comorbidities, Age-Adjusted Charlson Comorbidity Index score, and polypharmacy), nutritional status evaluated by the Mini Nutritional Assessment-Short Form and body mass index (BMI), and global functional status. A Cox proportional hazards model was used to evaluate the predictive values of clinical parameters for all-cause mortality. RESULTS The cohort comprised 84 newly diagnosed AD patients (mean age 86.6 ± 3.9 years) with a mean follow-up period of 2.1 ± 1.2 years. The overall median survival was 3.5 years from the time of AD diagnosis (95% confidence interval, 3.1-3.9 years). BMI was significantly lower in the deceased group than in the alive group (20.7 ± 2.9 vs. 22.6 ± 3.4, p = 0.023). Logistic regression demonstrated that the clinical parameters significantly associated with mortality were high global comorbidity, low nutritional status (malnutrition and underweight), and impaired physical function at the time of AD diagnosis. CONCLUSION Comorbidity burden, nutritional status, and physical functional status at the time of dementia diagnosis are important contributors to poor outcome in the oldest old. Efforts to control concurrent chronic disorders, nutritional interventions, and physical independency as a long-term care strategy for dementia may provide survival benefit.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shuo-Chun Weng
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Yin Chou
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yu-Shan Lee
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chih-Kaung Liang
- Center for Geriatrics and Gerontology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chu-Sheng Lin
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan.,Department of Family Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Tsuo-Hung Lan
- Department of Psychiatry, Taichung Veterans General Hospital, Taichung, Taiwan.,Department of Psychiatry, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan
| | - Shih-Yi Lin
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yu-Te Lin
- Center for Geriatrics and Gerontology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan,
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Hsu YC, Su HY, Sun CK, Liang CY, Chen TB, Hsu CW. Risk of post-contrast acute kidney injury in emergency department patients with sepsis. Hong Kong Med J 2019; 25:429-437. [PMID: 31796644 DOI: 10.12809/hkmj198086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Although computed tomography (CT) is a useful tool for exploring occult infection in patients with sepsis in the emergency department, the potential nephrotoxicity of contrast media is a major concern. Our study aimed to investigate the association between use of contrast-enhanced CT and the risks of acute kidney injury and other adverse outcomes in patients with sepsis. METHODS In total, 587 patients with sepsis who underwent CT scan (enhanced CT group: 105, non-enhanced CT group: 482) from January 2012 to December 2016 at a tertiary referral centre were enrolled in this retrospective analysis, and propensity score matching was performed to minimise the selection bias. The length of stay, incidences of acute kidney injury and emergent dialysis, and short-term mortality were compared between the two groups. RESULTS Compared with patients in the non-enhanced CT group, patients in the contrast-enhanced CT group did not have increased risks of acute kidney injury (odds ratio [OR]=1.38, 95% confidence interval [CI]=0.55-3.43; P=0.489), emergent dialysis (OR=1.31, 95% CI=0.47-3.68; P=0.602), or short-term mortality (OR=0.90, 95% CI=0.48-1.69; P=0.751). In addition, there was no significant difference in the median length of hospital stay between survivors in the two groups (20 vs 19 days, P=0.742). CONCLUSIONS Intravenous contrast administration during CT scanning was not associated with prolonged length of hospital stay in patients with sepsis in an emergency setting. Moreover, the use of contrast-enhanced CT was not associated with increased risks of acute kidney injury, emergent dialysis, or short-term mortality.
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Affiliation(s)
- Y C Hsu
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - H Y Su
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - C K Sun
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan.,School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - C Y Liang
- Department of Emergency Medicine, E-Da Cancer Hospital, I-Shou University, Kaohsiung, Taiwan.,Department of Information Engineering, I-Shou University, Kaohsiung, Taiwan
| | - T B Chen
- Department of Medical Imaging and Radiological Sciences, I-Shou University, Kaohsiung, Taiwan
| | - C W Hsu
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan.,School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
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16
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Hu J, Chen TB. [Inflammatory myofibroblastic tumor of the paranasal sinus:three cases report]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:722-724. [PMID: 29871359 DOI: 10.13201/j.issn.1001-1781.2017.09.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Indexed: 11/12/2022]
Abstract
The clinical manifestations of paranasal sinusitis were similar to those of chronic sinusitis. The main manifestations were recurrent nasal congestion,nasal obstruction,such as invasion of the surrounding tissue,local compression. Clinical manifestations were usually nonspecific. CT imaging could display the size,range of the tumor and its relationship with the surrounding tissues. Inflammatory myofibroblastic tumor is a low-grade malignant tumor and frequently misdiagnosed. Diagnosis depends on the pathological examination.Complete surgical resection is the preferred method of treatment. Adjuvant treatment included radiotherapy,chemotherapy and hormone therapy. recurrence and death was not uncommon.
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Ma GG, Fang LG, Gao P, Cheng ZW, Chen TB, Lin X, Cheng KA, Deng H, Fang Q. [Association between the ratio of early diastolic transmitral velocity to early diastolic mitral annular velocity and invasive measured left atrial pressure in patients with atrial fibrillation and preserved left ventricular ejection fraction]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:292-297. [PMID: 29747325 DOI: 10.3760/cma.j.issn.0253-3758.2018.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the association between the ratio of early diastolic transmitral velocity to early diastolic mitral annular velocity (E/E') and left atrial pressure (LAP) estimated from invasive catheter measurements in patients with atrial fibrillation (AF). Methods: A total of 46 consecutive patients with non-valvular AF and preserved left ventricular ejection fraction (LVEF) admitted in our department to receive the first radiofrequency ablation from May to July 2017 were included. All patients underwent echocardiography at 24-48 hours before radiofrequency ablation, and LAP was invasively measured during the ablation procedure. According to mean LAP, patients were divided into 2 groups of normal LAP (LAP≤12 mmHg(1 mmHg=0.133 kPa, n=31) and elevated LAP (LAP>12 mmHg, n=15). Linear correlation analysis was used to evaluate the relationship between E/E' and LAP. Results: E/E' correlated well with LAP (septal E/E' (E/E'(sep)), r= 0.397, P=0.006; lateral E/E' (E/E'(lat)), r=0.433, P=0.003; mean E/E' (E/E'(mean)), r=0.431, P=0.003). Using receiver operating characteristic analysis, the optimal cut-off for E/E'(sep) was 12.5 (sensitivity 73.3%, specificity 67.7%), E/E'(lat) was 10.8 (sensitivity 80.0%, specificity 77.4%), E/E'(mean) was 11.0 (sensitivity 86.7%, specificity 64.5%) to predict mean LAP>12 mmHg. Conclusion: E/E', especially the E/E'(lat), is positively correlated with LAP in patients with AF and preserved LVEF, and may be used to estimate the diastolic function in AF patients with preserved LVEF.
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Affiliation(s)
- G G Ma
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Chen TB, Yiao SY, Sun Y, Lee HJ, Yang SC, Chiu MJ, Chen TF, Lin KN, Tang LY, Lin CC, Wang PN. Comorbidity and dementia: A nationwide survey in Taiwan. PLoS One 2017; 12:e0175475. [PMID: 28403222 PMCID: PMC5389824 DOI: 10.1371/journal.pone.0175475] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 03/14/2017] [Indexed: 01/16/2023] Open
Abstract
Background Comorbid medical diseases are highly prevalent in the geriatric population, imposing hardship on healthcare services for demented individuals. Dementia also complicates clinical care for other co-existing medical conditions. This study investigated the comorbidities associated with dementia in the elderly population aged 65 years and over in Taiwan. Methods We conducted a nationwide, population-based, cross-sectional survey; participants were selected by computerized random sampling from all 19 Taiwan counties between December 2011 and March 2013. After exclusion of incomplete or erroneous data, 8,456 subjects were enrolled. Of them, 6,183 were cognitively normal (control group), 1,576 had mild cognitive impairment (MCI), and 697 had dementia. We collected information about types of comorbidities (i.e., vascular risk factors, lung diseases, liver diseases, gastrointestinal diseases, and cancers), Charlson comorbidity index score, and demographic variables to compare subjects with normal cognition, MCI, and dementia. Results Regardless of the cognitive condition, over 60% of the individuals in each group had at least one comorbid disease. The proportion of subjects possessing at least three comorbidities was higher in those with cognitive impairment (MCI 20.9%, dementia 27.3%) than in control group (15%). Hypertension and diabetes mellitus were the most common comorbidities. The mean number of comorbidities and Charlson comorbidity index score were greater in MCI and dementia groups than in control group. Logistic regression demonstrated that the comorbidities significantly associated with MCI and dementia were cerebrovascular disease (OR 3.35, CI 2.62–4.28), cirrhosis (OR 3.29, CI 1.29–8.41), asthma (OR 1.56, CI 1.07–2.27), and diabetes mellitus (OR 1.24, CI 1.07–1.44). Conclusion Multiple medical comorbid diseases are common in older adults, especially in those with cognitive impairment. Cerebrovascular disease, cirrhosis, asthma, and diabetes mellitus are important contributors to cognitive deterioration in the elderly. Efforts to lower cumulative medical burden in the geriatric population may benefit cognitive function.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Szu-Yu Yiao
- Department of Biostatistics, Columbia University Mailman School of Public Health, New York, NY, United States of America
| | - Yu Sun
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
- Department of Neurology, En Chu Kong Hospital, New Taipei City, Taiwan
| | - Huey-Jane Lee
- Taiwan Alzheimer’s Disease Association, Taipei, Taiwan
| | | | - Ming-Jang Chiu
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Psychology, College of Science, National Taiwan University, Taipei, Taiwan
| | - Ta-Fu Chen
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ker-Neng Lin
- Department of Psychology, Soo-Chow University, Taipei, Taiwan
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Li-Yu Tang
- Taiwan Alzheimer’s Disease Association, Taipei, Taiwan
| | - Chung-Chih Lin
- Department of Computer Science and Information Engineering, Chung Gung University, Tao-Yuan, Taiwan
| | - Pei-Ning Wang
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Aging and Health Research Center, National Yang-Ming University, Taipei, Taiwan
- * E-mail:
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Yang YC, Cai X, Zhang SY, Jia ZL, Chen TB, Liu LR, Liu J, Zhao MC. Proteomic analysis of susceptibility in intestinal stromal tumors. Genet Mol Res 2015; 14:13566-71. [PMID: 26535669 DOI: 10.4238/2015.october.28.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We analyzed the susceptibility of intestinal stromal tumors using cell culture and proteomics. Human SGC7901 gastric cells were selected and divided into a blank control group (untransfected SGC7901 cells), a negative control group [SGC7901 cells transfected with negative interference control-small interfering RNA (siRNA)], and a COOH-terminus tensin-like molecule (CTEN)-siRNA-1 group (SGC7901 cells transfected with CTEN-siRNA-1). The cells were successfully transfected and subjected to analyses of cell proliferation, cell cycle, cell invasion, CTEN expression, and proteomics. The percentages of cells in the G0/G1, S, and G2/M phases were similar in the three groups (P > 0.05), and the OD values were also similar at 24, 48, and 72 h (P > 0.05). Compared with the levels in the blank and negative control groups, CTEN protein in the CTEN-siRNA-1 group decreased by 66 and 65%, respectively, and significantly fewer cells in the CTEN-siRNA-1 group were capable of invasion (P < 0.05). Proteomic analysis showed that in the CTEN-siRNA-1 group, 283 proteins were upregulated and 242 were downregulated; from these, the expression levels of E-cadherin and ERK proteins changed significantly. Silencing the expression of CTEN in intestinal stromal tumor cells reduces their invasion capability. Moreover, silencing CTEN at different stages can also regulate the expression levels of E-cadherin and ERK proteins.
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Affiliation(s)
- Y C Yang
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - X Cai
- Laboratory of Molecular Genetics, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - S Y Zhang
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - Z L Jia
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - T B Chen
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - L R Liu
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - J Liu
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
| | - M C Zhao
- Department of Clinical Laboratory, General Hospital of Beijing Military Area, Beijing, China
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Lin CY, Chen TB, Lin KN, Yeh YC, Chen WT, Wang KS, Wang PN. Confrontation naming errors in Alzheimer's disease. Dement Geriatr Cogn Disord 2014; 37:86-94. [PMID: 24107364 DOI: 10.1159/000354359] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/11/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Impairment in visual interpretation, semantic conception, or word retrieval may contribute to the naming errors identified in the Boston Naming Test (BNT). We investigated the possible cognitive mechanism of the naming difficulty in Alzheimer's disease (AD) by analyzing the error patterns presented in the BNT. METHODS The Chinese version of the 30-item BNT (BNT-30) was performed on 115 normal control (NC) subjects and 104 mild-to-moderate AD patients. Accurate rates after semantic and phonemic cues were analyzed. The frequencies of 7 types of error patterns in the AD patients and the NC subjects were compared. RESULTS The accurate rate after semantic cues was significantly lower in the AD than in the NC groups, but phonemic cues were more helpful than semantic cues to achieve accurate naming in both groups. The AD patients made more errors in all error patterns. Particularly, the frequency of nonresponse errors (n = 806) in the AD group significantly exceeded that in the NC group (n = 382). However, the distribution of the error patterns did not differ between the two groups. CONCLUSION Naming difficulties in AD might be attributed to progressive semantic knowledge degradation. The AD and the NC groups differ quantitatively but not qualitatively in the error patterns in confrontation naming.
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Affiliation(s)
- Chi-Ying Lin
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
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Chen TB, Chen YT, Fuh JL, Tang CH, Wang SJ. Treatment adherence among new triptan users: a 2-year cohort study in Taiwan. J Headache Pain 2014; 15:48. [PMID: 25117594 PMCID: PMC4149295 DOI: 10.1186/1129-2377-15-48] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 07/14/2014] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The persistence of triptan use among newly prescribed users is low in the United States and European countries. However, triptan refill patterns in Asian primary care practices have not been well described. METHODS Data from the National Health Insurance Research Database in Taiwan were used to conduct a retrospective cohort analysis from 2005 to 2008. All participants were followed for 2 years after receiving a new triptan prescription. Refill and 2-year retention rates of newly prescribed triptans were calculated, and predictors of the first triptan refill and 2-year retention were analyzed. RESULTS Of the 13,951 participants with a new triptan prescription (99.9% sumatriptan), 67.4% were prescribed by a neurologist, 67.4% were prescribed at least one prophylactic agent for migraine. Of them, 34.3% adhered to the newly prescribed triptan at the first refill, 0.01% switched to another triptan, and 40.9% switched to a non-triptan acute migraine medication. The 2-year retention rate was 4.0%. The frequency of headache-related neurologic visits for 1 year before the index date, first prescription of triptan or other acute medications, first triptan prescription by a neurologist, and prophylactic use were associated with higher first refill rates. The frequency of headache-related neurologic visits 1 year before the index date and first triptan prescription by a neurologist were related to higher 2-year retention rates. Diabetes mellitus and first triptan prescription at a local medical clinic were associated with reduced probability of continued triptan use at the first refill and 2 years. CONCLUSIONS Similar to Western societies, the refill and 2-year retention rates were low in new users of triptans. Frequency of neurologic visits and triptan prescription by a neurologist were significant predictors of adherence.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei 11217, Taiwan
| | - Yung-Tai Chen
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Department of Nephrology, Institute of Internal Medicine, Taipei City Hospital Heping Fuyou Branch, Taipei, Taiwan
| | - Jong-Ling Fuh
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei 11217, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Chao-Hsiun Tang
- School of Health Care Administration, Taipei Medical University, Taipei, Taiwan
| | - Shuu-Jiun Wang
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei 11217, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
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Chen TB, Lin CY, Lin KN, Yeh YC, Chen WT, Wang KS, Wang PN. Culture qualitatively but not quantitatively influences performance in the Boston naming test in a chinese-speaking population. Dement Geriatr Cogn Dis Extra 2014; 4:86-94. [PMID: 24847347 PMCID: PMC4024970 DOI: 10.1159/000360695] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background/Aims The Boston Naming Test (BNT) is the most frequently administered confrontational naming test, but the cultural background of the patients may influence their performance in the BNT. The aim of this study was to identify differences in performance in the BNT between a Chinese population in Taiwan, Chinese populations in other areas and a Caucasian population. Methods A total of 264 native, Chinese-speaking, cognitively normal elders aged >60 years were enrolled in our study and conducted the 30-item Chinese version of the BNT. Another 10 BNT studies were categorized, analyzed and compared with the present study. Results Higher education was associated with higher scores, whereas age and gender had no effect on performance in the BNT. The score of the Chinese-speaking population was equivalent to the English-speaking population. A disparity in difficulties with items was not only apparent between the Taiwanese and Caucasian populations, but also between the Chinese-speaking populations in the different geographic areas. Conclusion For the most part, the impact of culture on performance in the BNT may not be quantitative but qualitative. Attention should be paid to a potential effect of culture on difficulties with items when administering the BNT to non-English-speaking populations. Understanding differences in performance in the BNT in distinct cultural settings improves the clinical application of the BNT.
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Affiliation(s)
- Ting-Bin Chen
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan (ROC) ; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan (ROC)
| | - Chi-Ying Lin
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan (ROC) ; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan (ROC)
| | - Ker-Neng Lin
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan (ROC) ; Department of Psychology, Soochow University, Taipei, Taiwan (ROC)
| | - Yen-Chi Yeh
- Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan (ROC) ; Department of Neurology, Kuo General Hospital, Tainan, Taiwan (ROC)
| | - Wei-Ta Chen
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan (ROC) ; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan (ROC)
| | - Kuo-Shu Wang
- Graduate Institute of Linguistics, National Taiwan University, Taipei, Taiwan (ROC)
| | - Pei-Ning Wang
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan (ROC) ; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan (ROC) ; Aging and Health Research Center, National Yang-Ming University, Taipei, Taiwan (ROC)
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Yeh YC, Lin KN, Chen WT, Lin CY, Chen TB, Wang PN. Functional disability profiles in amnestic mild cognitive impairment. Dement Geriatr Cogn Disord 2011; 31:225-32. [PMID: 21474931 DOI: 10.1159/000326910] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/24/2011] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND/AIMS Instrumental activities of daily living (IADL) can be impaired in mild cognitive impairment (MCI), and the severity of functional disability predicts Alzheimer's disease (AD) in amnestic MCI (aMCI). This study investigated the functional profiles of aMCI in a Chinese population. METHODS The Disability Assessment for Dementia scores of 56 subjects with single-domain aMCI (sd-aMCI) and 94 with multiple-domain aMCI (md-aMCI) were compared with normal controls (n = 64) and mild AD patients (n = 102). RESULTS Both the sd-aMCI (2.5 ± 2.5) and md-aMCI (3.7 ± 3.5) groups had more impaired IADL items than the controls (0.7 ± 1.7). Their IADL scores were intermediate, between the control and AD groups. sd-aMCI subjects presented deficits in 7 IADL items involving the 'meal preparation', 'telephoning', 'finance', 'medications', 'housework', and 'leisure' subscales. md-aMCI subjects presented deficits in 14 IADL items involving all subscales of daily activities. The Mini-Mental State Examination and Modified Trail-Making Test Part B scores were the major neuropsychological correlates of IADL performance in aMCI. CONCLUSION IADL can be impaired in both sd-aMCI and md-aMCI. Including the functional ability assessment in the evaluation of aMCI may help clinicians to provide appropriate suggestions to maintain daily functioning.
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Affiliation(s)
- Yen-Chi Yeh
- Division of Neurology, Department of Internal Medicine, Far-Eastern Memorial Hospital, New Taipei, Taiwan, ROC
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Lee DJ, Spinosa L, He PJ, Chen TB. Sludge production and management processes: case study in China. Water Sci Technol 2006; 54:189-96. [PMID: 17087385 DOI: 10.2166/wst.2006.562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In 2010, the sewage sludge production rate will be 178,500 t dried solids (ds) for Beijing and 294,000 t-ds for Shanghai, respectively. Beijing adopts a centralized system to stabilize 78% of her sludge in three rural Stabilization Centres. Aerated composting technique will be used. Shanghai on the contrary decentralizes the management plan to treat the sludge on site. Diverse treatment trains, such as aerobic/anaerobic digestion, drying, incineration, and composting will be applied. Production rate, treatment plan, and the associated costs, energy consumption, carbon dioxide emission, and risk assessment for heavy metals and pathogens on human health were evaluated in this report for sludges yielded in Beijing and Shanghai, China.
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Affiliation(s)
- D J Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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Zheng GD, Chen TB, Gao D, Luo W. Dynamic of lead speciation in sewage sludge composting. Water Sci Technol 2004; 50:75-82. [PMID: 15580997] [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: 05/24/2023]
Abstract
A large-scale sewage sludge composting experiment was conducted to develop an understanding of changes that occur to Pb chemical speciation, distribution and bio-availability during the course of composting. The four-stage Tessier sequential extraction method was employed to investigate the dynamics of heavy metal Pb speciation (exchangeable, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter and sulphides, residual) during the course of sewage sludge composting. The concentrations of the total Pb and the five Pb fractions concentrations were increased during the whole stage of compost. However, the percentages of Pb distribution with respect to total Pb were changed in the following manner: exchangeable, bound to Fe-Mn oxides and bound to carbonates Pb with respect to total Pb were increased, while the percentages of bound to organic matter and sulphides, and residual Pb with respect to total Pb were decreased during composting. The data showed that the quantity of Pb in the less toxic portion, such as consisting of organic matter and sulphides bound and residual Pb, was increased, and that the contamination and bio-availability of heavy metal Pb in sewage sludge was reduced during the composting process.
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Affiliation(s)
- G D Zheng
- Laboratory of Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China.
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26
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Chen CH, Huang PJ, Chen TB, Cheng YM, Lin SY, Chiang HC, Huang CY, Huang CK. Surgical treatment for Haglund's deformity. Kaohsiung J Med Sci 2001; 17:419-22. [PMID: 11715841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
Haglund's deformity, or "pump bump" is a common cause of posterior heel pain, characterized clinically by a painful soft tissue swelling at the level of the Achilles tendon insertion. We reviewed 30 heels in 19 patients with failure of conservative treatment. Surgical management consisted of excision of the posterior calcaneal tuberosity and bursectomy through a medial longitudinal incision. The average follow-up period was 6 years (range, 3-10 years). Only 3 heels (10%) in 2 patients had persistent pain. Twenty-seven heels (90%) were cured after operation. However, 25 heels (83%) had residual pain for a half to two years after operation and became free of symptoms thereafter. We conclude surgical treatment of Haglund's deformity produces a predictably good result (90%) but requires a long time about a half to two years for full recovery.
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Affiliation(s)
- C H Chen
- Department of Orthopaedic Surgery, Kaohsiung Medical University, Kaohsiung, Taiwan
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Abstract
We have reviewed a single surgeon's experience with isolated talonavicular fusion in 16 patients with talonavicular arthritis. Fixation was either by staples or screws. Fifteen solid unions were achieved in the 16 patients who were followed (mean: 51 months). The average Ankle-Hindfoot Scale improved from 77.2 preoperatively to 92.9 postoperatively (p < 0.001). Subjectively, 15 patients were satisfied and one patient dissatisfied with the results. Further osteoarthritis in the adjacent joints was noted in five patients. We concluded that isolated talonavicular fusion is an effective method of treatment of talonavicular arthritis regarding pain relief and functional improvement. Though osteoarthritis was found in some adjacent joints postoperatively, the results were still satisfactory.
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Affiliation(s)
- C H Chen
- Department of Orthopaedic Surgery, Kaohsiung Medical University, Hsiao-Kang Dist., Kaohsiung City, Taiwan
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Chen CH, Hung SH, Chen JC, Chen TB, Cheng YM, Chang JK, Lin SY, Hsu CY, Wang HY, Ko SH. Surgical treatment for concomitant fractures of the femoral neck and diaphysis: a treatment protocol. Kaohsiung J Med Sci 2001; 17:207-11. [PMID: 11482132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Concomitant ipsilateral femoral shaft and neck fractures are difficult to treat. The standard protocol in our hospital is plates for diaphyseal fractures and lag screws or dynamic hip screws (DHS) fixations for the femoral neck fractures. We treated 21 patients with these complex fractures between 1988 and 1998 with this protocol. All patients were injured from high-energy trauma. There were 15 males and 6 females with an average age of 44 years. The average follow-up period is 50 months. All except one patient united well. During the follow-up period, neither non-union of the femoral neck fracture nor osteonecrosis of the femoral head was noted. There was also no malunion. There were twenty good results and one poor functional result. We conclude that plate on the shaft and sliding hip screws or separate screws in the hip are a reliable method for concomitant ipsilateral femoral neck and shaft fractures.
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Affiliation(s)
- C H Chen
- Department of Orthopedic Surgery, Kaohsiung Medical University, Taiwan
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Chen TB, Deng WH, Lu WH, Chen RM, Rao PF. [Detection of residual antibiotics in honey with capillary electrophoresis]. Se Pu 2001; 19:91-3. [PMID: 12541857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
Five antibiotics compounds, tetracycline (TC), oxytetracycline (OTC), doxycycline (DOC), chlortetracycline (CTC) and chloramphenicol (CP), were successfully separated and determined by high performance capillary electrophoresis(HPCE). Effects of buffer pH, various organic additives and temperature on electrophoretic separation of antibiotics were investigated. Satisfactory separation of these five antibiotics was achieved in the buffer of pH 3.2, 0.02 mol/L Na2HPO4-0.01 mol/L citric acid with addition of 4% (V/V) N-methylmorpholine and 12% (V/V) acetonitrile within 20 minutes. The calibration graphs were linear by plotting the peak area against the sample concentration over the range of 150 micrograms/L to 750 micrograms/L and the correlation coefficients were greater than 0.9917. The detection limits were 10 micrograms/L for CP, 20 micrograms/L for TC, OTC and DOC and 40 micrograms/L for CP (signal to noise ratio > 5). HPCE method was successfully applied to the analysis of trace antibiotics in honey.
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Affiliation(s)
- T B Chen
- Institute of Biotechnology, Fuzhou University, Fuzhou 350002, China.
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Xu XH, Zhang RZ, Sheng SM, Chen TB, Li L, Rao PF. [Determination of angiotensin-converting enzyme activity by micellar electrokinetic capillary chromatography]. Se Pu 2001; 19:68-70. [PMID: 12541850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
A sensitive and rapid method was developed for angiotensin-converting enzyme (ACE) activity determination by micellar electrokinetic capillary chromatography (MECC). MECC was carried out to separate and quantify the products of the enzymatic reacting using Hip-Leu-His as the substrate in 20 mmol/L boric acid-borate buffer (pH 9.0) including 50 mmol/L SDS as the run buffer at an applied voltage of 8.1 kV. The electrophoresis was monitored at 228 nm, and completed in 6 minutes. The detection limits of ACE activity was 5 pmol/min(signal to noise ratio was 2).
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Affiliation(s)
- X H Xu
- Institute of Biotechnology, Fuzhou University, Fuzhou 350002, China
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Hess JF, Hey PJ, Chen TB, O'Brien J, Omalley SS, Pettibone DJ, Chang RS. Molecular cloning and pharmacological characterization of the canine B1 and B2 bradykinin receptors. Biol Chem 2001; 382:123-9. [PMID: 11258662 DOI: 10.1515/bc.2001.018] [Citation(s) in RCA: 23] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The dog is a valuable animal model in the study of the physiological role of both the B1 and B2 bradykinin receptors. To more thoroughly characterize the pharmacological properties of the canine kinin receptors we isolated the cDNA sequence encoding the B1 and B2 bradykinin receptor subtypes and overexpressed them in Chinese hamster ovary (CHO) cells. The cDNA sequence of the canine B1 bradykinin receptor encodes a protein comprised of 350 amino acids that is 76% identical to the human B1 bradykinin receptor. The cDNA sequence of the canine B2 bradykinin receptor encodes a protein of 392 amino acids that is 81% identical to the human B2 bradykinin receptor. The amino acid sequence of the canine B1 and B2 receptors are 35% identical. Pharmacological studies of the cloned receptors revealed that the agonist affinity of the dog B1 receptor is similar to the rodent B1 receptors, and differs from the human form in that there is no preference for the presence of the N-terminal Lys residue of [des-Arg10]Lys-bradykinin. Significantly, the B1 receptor antagonist [des-Arg9,Leu8]BK behaves as partial agonist on the cloned dog B1 receptor. The dog B2 receptor exhibits the 'classical' pharmacological properties of this receptor subtype.
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Affiliation(s)
- J F Hess
- Department of New Lead Pharmacology, Merck Research Laboratory, West Point, PA 19486, USA
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Chang RS, Chen TB, O'Malley SS, Pettibone DJ, DiSalvo J, Francis B, Bock MG, Freidinger R, Nagarathnam D, Miao SW, Shen Q, Lagu B, Murali Dhar TG, Tyagarajan S, Marzabadi MR, Wong WC, Gluchowski C, Forray C. In vitro studies on L-771,688 (SNAP 6383), a new potent and selective alpha1A-adrenoceptor antagonist. Eur J Pharmacol 2000; 409:301-12. [PMID: 11108825 DOI: 10.1016/s0014-2999(00)00854-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
L-771,688 (SNAP 6383, methyl(4S)-4-(3, 4-difluorophenyl)-6-[(methyloxy)methyl]-2-oxo-3-[(¿3-[4-(2-pyridin yl)-1-piperidinyl]propyl¿amino)carbonyl]-1,2,3, 4-tetrahydro-5-pyrimidine carboxylate) had high affinity (Ki less than or = 1 nM) for [3H]prazosin binding to cloned human, rat and dog alpha1A-adrenoceptors and high selectivity (>500-fold) over alpha1B and alpha1D-adrenoceptors. [3H]Prazosin / (+/-)-beta-[125I]-4-hydroxy-phenyl)-ethyl-aminomethylteralone ([125I]HEAT) binding studies in human and animal tissues known to contain alpha1A and non-alpha1A-adrenoceptors further demonstrated the potency and alpha1A-subtype selectivity of L-771,688. [3H]L-771,688 binding studies at the cloned human alpha1A-adrenoceptors and in rat tissues indicated that specific [3H]L-771,688 binding was saturable and of high affinity (Kd=43-90 pM) and represented binding to the pharmacologically relevant alpha1A-adrenoceptors. L-771,688 antagonized norepinephrine-induced inositol-phosphate responses in cloned human alpha1A-adrenoceptors, as well as phenylephrine or A-61603 (N-[5-4,5-dihydro-1H-imidazol-2yl)-2-hydroxy-5,6,7, 8-terahydro-naphthlen-1-yl] methanesulfonamide hydrobromide) induced contraction in isolated rat, dog and human prostate, human and monkey bladder neck and rat caudal artery with apparent Kb values of 0.02-0.28 nM. In contrast, the contraction of rat aorta induced by norepinephrine was resistant to L-771,688. These data indicate that L-771,688 is a highly selective alpha1A-adrenoceptor antagonist.
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Affiliation(s)
- R S Chang
- Department of Pharmacology, Merck Research Laboratories, WP 46-300, P.O. Box 4, West Point, PA 19486-0004, USA.
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Abstract
Ipsilateral femoral shaft and neck fractures are difficult to treat. From 1989 to 1998, we treated 18 patients with these complex fractures. There were 14 male and 4 female with an average age of 40 years. Most resulted from high-energy trauma. The average follow-up period is 41 months. All but one of the fractures united well. The mean time to union is 5.2+/-2.3 months in the diaphysis and 4.16+/-2 months in the neck. No cases of the femoral neck fracture or osteonecrosis of the femoral head were observed during the follow-up period. Fourteen cases were treated with a standard protocol of plates for diaphyseal fractures and lag screws or dynamic hip screws (DHS) fixations for the femoral neck fractures. There were 13 good and 1 fair functional results. Two neglected neck fractures were treated with interlocking nailing for diaphyseal fracture with fair results. We conclude that a plate on the shaft and sliding hip screws or separate screws in the hip is a reliable method for ipsilateral femoral neck and shaft fractures.
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Affiliation(s)
- C H Chen
- Department of Orthopaedic Surgery, Kaohsing Medical University, Taiwan
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Huang QQ, Zhu XY, Li N, Deng WH, Chen TB, Rao PF, Teng MK, Niu LW. Characterization, crystallization and preliminary X--ray diffraction analysis of acutohaemolysin, a haemolytic toxin from Agkistrodon acutus venom. Acta Crystallogr D Biol Crystallogr 2000; 56:907-11. [PMID: 10930841 DOI: 10.1107/s0907444900005643] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/1999] [Accepted: 04/27/2000] [Indexed: 11/10/2022]
Abstract
Acutohaemolysin, a phospholipase A(2) (PLA(2)) from the venom of the snake Agkistrodon acutus, has been isolated and purified to homogeneity by anion-exchange chromatography on a DEAE-Sepharose column followed by cation-exchange chromatography on a CM-Sepharose column. It is an alkaline protein with an isoelectric point of 10.5 and is comprised of a single polypeptide chain of 13 938 Da. Its N-terminal amino-acid sequence shows very high similarity to Lys49-type PLA(2) proteins from other snake venoms. Although its PLA(2) enzymatic activity is very low, acutohaemolysin has a strong indirect haemolytic activity and anticoagulant activity. Acutohaemolysin crystals with a diffraction limit of 1.60 A were obtained by the hanging-drop vapour-diffusion method. The crystals belong to the space group C2, with unit-cell parameters a = 45.30, b = 59.55, c = 46.13 A, beta = 117.69 degrees. The asymmetric unit contains one molecule.
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Affiliation(s)
- Q Q Huang
- Laboratory of Structural Biology, University of Science and Technology of China, CAS, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
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Abstract
Although a variety of surgical techniques are available for the surgical treatment of early degenerative disease of the ankle, arthrodesis remains the preferred treatment for severe cases. We studied 126 ankles with an average follow up of 39 months of whom 25 with early disease underwent debridement and cheilectomy, 18 with intermediate disease underwent lower tibial osteotomy and 83 with severe disease underwent either arthrodesis (78) or total ankle replacement (5). In 96% of cases there was a satisfactory functional outcome.
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Affiliation(s)
- Y M Cheng
- Department of Orthopaedic Surgery, Shiau-Kan Hospital, Kaohsiung Medical University, Taiwan, ROC
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Hung SH, Chen TB, Cheng YM, Cheng NJ, Lin SY. Concomitant fractures of the ipsilateral femur and tibia with intra-articular extension into the knee joint. J Trauma 2000; 48:547-51. [PMID: 10744304 DOI: 10.1097/00005373-200003000-00034] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- S H Hung
- Department of Orthopedic Surgery, Kaohsiung Medical College, Kaohsiung City, Taiwan, Republic of China
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Wu SJ, Paxton H, Hanson B, Kung CG, Chen TB, Rossi C, Vaughn DW, Murphy GS, Hayes CG. Comparison of two rapid diagnostic assays for detection of immunoglobulin M antibodies to dengue virus. Clin Diagn Lab Immunol 2000; 7:106-10. [PMID: 10618287 PMCID: PMC95832 DOI: 10.1128/cdli.7.1.106-110.2000] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Two easy-to-use commercial diagnostic assays, a dipstick enzyme-linked immunosorbent assay (ELISA) (Integrated Diagnostics, Baltimore, Md.) and an immunochromatographic card assay (PanBio, Brisbane, Australia) were evaluated for detection of immunoglobulin M (IgM) antibody to dengue virus with an in-house IgM antibody capture microplate ELISA as a reference assay. The dipstick ELISA was based on the indirect-ELISA format using dengue 2 virus as the only antigen and enzyme-labeled goat anti-human IgM antibody as the detector. The total assay time was 75 min. The immunochromatographic card assay was based on the antibody capture format and separately measured both anti-dengue virus IgM and IgG in the same test. Colloidal-gold-labeled anti-dengue virus monoclonal antibody bound with dengue virus 1 to 4 antigen cocktail was the detector, and anti-human IgM and IgG were the capture antibodies. The total assay time was <10 min. Sera from 164 individuals classified as either anti-dengue virus IgM positive (94) or anti-dengue virus IgM negative (70) in the reference microplate ELISA with a dengue virus 1 to 4 antigen cocktail were tested in the two commercial assays. The dipstick ELISA missed 7 of 94 positive samples, for a sensitivity of 92.6%, while the immunochromatographic card assay missed two positive samples, for a sensitivity of 97.9%. Of the 70 negative samples, four were false positive by the dipstick ELISA and two were false positive in the immunochromatographic card assay, resulting in specificities of 94.3 and 97.1%, respectively. Both commercial assays provide sensitive and specific detection of anti-dengue virus IgM antibody and could prove useful in settings where the microplate ELISA is impractical.
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Affiliation(s)
- S J Wu
- Viral and Rickettsial Diseases Department, Naval Medical Research Center, Bethesda, Maryland 20889-5607, USA.
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38
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Nagarathnam D, Miao SW, Lagu B, Chiu G, Fang J, Murali Dhar TG, Zhang J, Tyagarajan S, Marzabadi MR, Zhang F, Wong WC, Sun W, Tian D, Wetzel JM, Forray C, Chang RS, Broten TP, Ransom RW, Schorn TW, Chen TB, O'Malley S, Kling P, Schneck K, Bendesky R, Harrell CM. Design and synthesis of novel alpha(1)(a) adrenoceptor-selective antagonists. 1. Structure-activity relationship in dihydropyrimidinones. J Med Chem 1999; 42:4764-77. [PMID: 10579840 DOI: 10.1021/jm990200p] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dihydropyrimidinones such as compound 12 exhibited high binding affinity and subtype selectivity for the cloned human alpha(1a) receptor. Systematic modifications of 12 led to identification of highly potent and subtype-selective compounds such as (+)-30 and (+)-103, with high binding affinity (K(i) = 0.2 nM) for alpha(1a) receptor and greater than 1500-fold selectivity over alpha(1b) and alpha(1d) adrenoceptors. The compounds were found to be functional antagonists in human, rat, and dog prostate tissues. Compound (+)-103 exhibited excellent selectively to inhibit intraurethral pressure (IUP) as compared to lowering diastolic blood pressure (DBP) in mongrel dogs (K(b)(DBP)/K(b)(IUP) = 40) suggesting uroselectivity for alpha(1a)-selective compounds.
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Affiliation(s)
- D Nagarathnam
- Departments of Chemistry and Pharmacology, Synaptic Pharmaceutical Corporation, Paramus, NJ 07652, USA
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39
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Lagu B, Tian D, Nagarathnam D, Marzabadi MR, Wong WC, Miao SW, Zhang F, Sun W, Chiu G, Fang J, Forray C, Chang RS, Ransom RW, Chen TB, O'Malley S, Zhang K, Vyas KP, Gluchowski C. Design and synthesis of novel alpha(1)(a) adrenoceptor-selective antagonists. 3. Approaches to eliminate opioid agonist metabolites by using substituted phenylpiperazine side chains. J Med Chem 1999; 42:4794-803. [PMID: 10579842 DOI: 10.1021/jm990202+] [Citation(s) in RCA: 24] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dihydropyrimidinones, such as 1, represent a novel class of alpha(1a) adrenoceptor antagonists with potential for the treatment of benign prostatic hyperplasia (BPH) (see part 1 of this series). Analysis of the metabolites of 1 revealed that 4-methoxycarbonyl-4-phenylpiperidine is formed as the major metabolite and is an agonist at the mu-opioid receptor. To circumvent any potential liability resulting from the metabolite, we decided to identify alternate templates devoid of agonist activity at the mu-opioid receptor to replace the 4-methoxycarbonyl-4-phenylpiperidine moiety. The present study describes the synthesis and SAR of dihydropyrimidinones linked to substituted 4-phenylpiperazine containing side chains. Compound (+)-38 was identified as a lead compound with a binding and functional profile comparable to that of 1. The putative metabolite 2-carboxamidophenylpiperazine has negligible affinity for the mu-opioid receptor.
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Affiliation(s)
- B Lagu
- Departments of Chemistry and Pharmacology, Synaptic Pharmaceutical Corporation, Paramus, NJ 07652, USA
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40
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Wong WC, Sun W, Lagu B, Tian D, Marzabadi MR, Zhang F, Nagarathnam D, Miao SW, Wetzel JM, Peng J, Forray C, Chang RS, Chen TB, Ransom R, O'Malley S, Broten TP, Kling P, Vyas KP, Zhang K, Gluchowski C. Design and synthesis of novel alpha(1)(a) adrenoceptor-selective antagonists. 4. Structure-activity relationship in the dihydropyrimidine series. J Med Chem 1999; 42:4804-13. [PMID: 10579843 DOI: 10.1021/jm9902032] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have previously disclosed dihydropyridines such as 1a,b as selective alpha(1a) antagonists as a potential treatment for benign prostatic hyperplasia (BPH). The propensity of dihydropyridines toward an oxidation led us to find suitable replacements of the core unit. The accompanying papers describe the structure-activity relationship (SAR) of dihydropyrimidinones 2a,b as selective alpha(1a) antagonists. We report herein the SAR of dihydropyrimidines such as 4 and highlight the similarities and differences between the dihydropyrimidine and dihydropyrimidinone series of compounds.
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Affiliation(s)
- W C Wong
- Departments of Chemistry and Pharmacology, Synaptic Pharmaceutical Corporation, Paramus, NJ 07652, USA
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41
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Murali Dhar TG, Nagarathnam D, Marzabadi MR, Lagu B, Wong WC, Chiu G, Tyagarajan S, Miao SW, Zhang F, Sun W, Tian D, Shen Q, Zhang J, Wetzel JM, Forray C, Chang RS, Broten TP, Schorn TW, Chen TB, O'Malley S, Ransom R, Schneck K, Bendesky R, Harrell CM, Vyas KP. Design and synthesis of novel alpha(1)(a) adrenoceptor-selective antagonists. 2. Approaches to eliminate opioid agonist metabolites via modification of linker and 4-methoxycarbonyl-4-phenylpiperidine moiety. J Med Chem 1999; 42:4778-93. [PMID: 10579841 DOI: 10.1021/jm990201h] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have previously described compound 1a as a high-affinity subtype selective alpha(1a) antagonist. In vitro and in vivo evaluation of compound 1a showed its major metabolite to be a mu-opioid agonist, 4-methoxycarbonyl-4-phenylpiperidine (3). Several dihydropyrimidinone analogues were synthesized with the goal of either minimizing the formation of 3 by modification of the linker or finding alternative piperidine moieties which when cleaved as a consequence of metabolism would not give rise to mu-opioid activity. Modification of the linker gave several compounds with good alpha(1a) binding affinity (K(i) = < 1 nM) and selectivity (>300-fold over alpha(1b) and alpha(1d)). In vitro analysis in the microsomal assay revealed these modifications did not significantly affect N-dealkylation and the formation of the piperidine 3. The second approach, however, yielded several piperidine replacements for 3, which did not show significant mu-opioid activity. Several of these compounds maintained good affinity at the alpha(1a) adrenoceptor and selectivity over alpha(1b) and alpha(1d). For example, the piperidine fragments of (+)-73 and (+)-83, viz. 4-cyano-4-phenylpiperidine and 4-methyl-4-phenylpiperidine, were essentially inactive at the mu-opioid receptor (IC(50) > 30 microM vs 3 microM for 3). Compounds (+)-73 and (+)-83 were subjected to detailed in vitro and in vivo characterization. Both these compounds, in addition to their excellent selectivity (>880-fold) over alpha(1b) and alpha(1d), also showed good selectivity over several other recombinant human G-protein coupled receptors. Compounds (+)-73 and (+)-83 showed good functional potency in isolated human prostate tissues, with K(b)s comparable to their in vitro alpha(1a) binding data. In addition, compound (+)-73 also exhibited good uroselectivity (DBP K(b)/IUP K(b) > 20-fold) in the in vivo experiments in dogs, similar to 1a.
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Affiliation(s)
- T G Murali Dhar
- Departments of Chemistry and Pharmacology, Synaptic Pharmaceutical Corporation, Paramus, NJ 07652, USA
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42
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Chen TB, Li L, Xu XH, Zhang RZ, Rao PF. [Immunoaffinity purification of specific immunoglobulin from egg yolk]. Se Pu 1999; 17:563-6. [PMID: 12552692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
Immunoaffinity column (Sepharose-4B) was made with bovine serum albumin (BSA) and used to isolate anti-BSA antibody from egg laid by hens which were immunized with BSA. Polyclonal antibody was eluted under different conditions (pH 5.0-2.8) because of its different affinity against antigen. SDS-PAGE and double-immunodiffusion analysis confirmed that antibody isolated from egg yolk was electrophoretically pure and specific. According to the separation aim in this paper, the final elution buffer was 0.1 mol/L glycine-HCl buffer, pH 2.8. The final antibody yield was higher than 90%. As a new development in chromatographic media, POROS has its maximum pressure limit of 21 MPa. It has been widely used because of its high performance, high flow and large capacity. The sugar residue of the antibody was then oxidized and coupled to the hydrazide activated POROS HY. Pure targeted protein (BSA) was obtained through the POROS HY column. The tendency of specific antibody production was investigated during the immunization period. The amount of specific antibody has increased obviously after boost immunization.
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Affiliation(s)
- T B Chen
- Institute of Biotechnology, Fuzhou University, Fuzhou 350002, China
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43
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Huang HN, Chen TB, Chen RM, Rao PF. [Detection of residual antibiotics in honey by capillary high performance liquid chromatography]. Se Pu 1999; 17:588-9. [PMID: 12552701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
The quantitative analysis of the three antibiotics-tetracycline(TC), oxytetracycline(OTC) and chlortetracyclinum(CTC) was carried out with a self-packed Hypersil C18 150 mm x 0.5 mm i.d. column. As little as 0.5 nanogram of antibiotics can be well detected, the capillary high performance liquid chromatographic method is 100 times more sensitive than that with ordinary HPLC method. The coefficients of linear correlation of mass concentration from 0.5 nanogram to 20 nanogram were rOTC = 0.99695, rTC = 0.99778 and rOTC = 0.98836. It showed that capillary HPLC is a good method used for sensitive analysis of antibiotics in honey.
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Affiliation(s)
- H N Huang
- Institute of Biotechnology, Fuzhou University, Fuzhou 350002, China
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44
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Marzabadi MR, Hong X, Nagarathnam D, Miao SW, Chiu G, Wong WC, Wetzel JM, Fang J, Forray C, Chen TB, O'Malley SS, Chang RS, Gluchowski C. Design and synthesis of novel dihydropyridine alpha-1a antagonists. Bioorg Med Chem Lett 1999; 9:2843-8. [PMID: 10522703 DOI: 10.1016/s0960-894x(99)00484-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of analogs of SNAP 5150 containing heteroatoms at C2 or C6 positions is described. Herein, we report that the presence of alkyl substituted heteroatoms at the C2(6)-positions of the dihydropyridine are well tolerated. In addition, 15 inhibited the phenylephrine induced contraction of dog prostate tissue with a Kb of 1.5 nM and showed a Kb (DBP, dogs, microg/kg)/Kb (IUP, dogs, microg/kg) ratio of 14.8/2.5.
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Affiliation(s)
- M R Marzabadi
- Department of Chemistry, Synaptic Pharmaceutical Corporation, Paramus, NJ 07652, USA
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45
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Chen TB, Bajzer Z, Macura S, Vuk-Pavlovic S. Differences in metabolism of 5-fluorouracil and 5-fluorouridine and regulation by glucosamine in human colon cancer multicell tumor spheroids. NMR Biomed 1999; 12:157-167. [PMID: 10414950 DOI: 10.1002/(sici)1099-1492(199905)12:3<157::aid-nbm551>3.0.co;2-i] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Glucosamine (GlcN) modulates fluoropyrimidine metabolism and enhances cytotoxicity of 5-fluorouridine (FUrd), but not of 5-fluorouracil (FUra), in human tumor models. To elucidate the underlying metabolic differences between FUra and FUrd, by the use of 19F and 31P NMR spectroscopy we studied these drugs in multicell tumor spheroids (MTS) formed by human colon carcinoma cells HT-29. This experimental system allowed detailed kinetic measurements of anabolic intracellular phosphates and fluorophosphates over periods of up to 2 days. Time-dependent NMR data were reduced and interpreted by the use of nonlinear compartmental models which yielded numerical values for the empirical rate constants characterizing mass transfer among the compartments. An analysis of these rate constants indicated qualitative and quantitative differences in the metabolism of FUra and FUrd and in the effects of GlcN on these drugs. The enhanced generation of FUDP-hexoses was a predicted effect of GlcN, but inhibited formation of fluorouridine diphosphates and fluorouridine triphosphates in FUra-treated MTS, and the magnitude of stimulation of fluoropyrimidine incorporation into macromolecules in FUrd-treated MTS were not predicted.
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Affiliation(s)
- T B Chen
- Department of Oncology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
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46
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Abstract
Investigation of leaves from the shrub Rapanea myricoides led to the isolation of two diprenylated benzoic acids. One was the known compound 5-carboxy-7-(3",3"-dimethylallyl)-2-(1'-hydroxy-1', 5'-dimethylhex-4'-enyl)-2,3-dihydrobenzofuran (1), while the other was assigned as the new diol 2 (3-(2',3'-dihydroxy-3', 7'-dimethyloct-6'-enyl)-4-hydroxy-5-(3",3"-dimethylallyl)benzoic acid, myricoidiol). These compounds were initially characterized through analysis of their spectroscopic data and comparison with some simpler synthetic analogues led to the final structure assignment for diol 2.
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Affiliation(s)
- SB Blunt
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242-1294, USA
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47
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Nerenberg JB, Erb JM, Thompson WJ, Lee HY, Guare JP, Munson PM, Bergman JM, Huff JR, Broten TP, Chang RS, Chen TB, O'Malley S, Schorn TW, Scott AL. Design and synthesis of N-alkylated saccharins as selective alpha-1a adrenergic receptor antagonists. Bioorg Med Chem Lett 1998; 8:2467-72. [PMID: 9873563 DOI: 10.1016/s0960-894x(98)00446-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Benign prostatic hyperplasia can be managed pharmacologically with alpha-1 adrenergic receptor antagonists. Agents that demonstrate selectivity for the alpha-1a receptor subtype may offer advantages in clinical applications with respect to hypotensive side effects. The N-alkylated saccharins reported here represent a new class of subtype selective alpha-1a adrenergic receptor antagonists which demonstrate potent effects on prostate function in vivo and are devoid of blood pressure side effects.
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Affiliation(s)
- J B Nerenberg
- Department of Medicinal Chemistry, Merck & Co., West Point, PA 19486, USA
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48
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Abstract
From 1988 to 1995, 96 patients (161 feet) underwent a modified Mitchell distal metatarsal osteotomy performed for mild-to-moderate hallux valgus. On AP x-rays of the standing foot, the average intermetatarsal angle was corrected from 15 degrees to 9 degrees, and the first metatarsophalangeal angles were corrected from an average of 41 degrees to 15 degrees. Criteria for evaluation of clinical results included relief of pain, appearance of foot, and shoe wear. After an average follow-up of 38 months, the overall satisfaction rate was 92.5%. Complications included 13 pin tract infections, two delayed unions, and two correction losses. The most common late sequela was transfer metatarsalgia of the lesser toes, which occurred in 20 feet (12.4%), leading to some dissatisfaction. The Mitchell osteotomy can be used on cases with less than 20 degrees of intermetatarsal angle, offering a stable construct with easy postoperative care.
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Affiliation(s)
- C H Kuo
- Department of Orthopaedic Surgery, Kaohsiung Medical College, Kaohsiung City, Taiwan, Republic of China
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49
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O'Malley SS, Chen TB, Francis BE, Gibson RE, Burns HD, DiSalvo J, Bayne ML, Wetzel JM, Nagarathnam D, Marzabadi M, Gluchowski C, Chang RS. Characterization of specific binding of [125I]L-762,459, a selective alpha1A-adrenoceptor radioligand to rat and human tissues. Eur J Pharmacol 1998; 348:287-95. [PMID: 9652345 DOI: 10.1016/s0014-2999(98)00149-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 02/08/2023]
Abstract
L-762,459 ((+/-)1-(3-¿[5-carbamoyl-2-2-[(4-hydroxy-3-iodobenzimidoyl)-amino] -ethoxy-methy¿-6-methyl-4-(4-nitropheny)-1,4-dihydropyridine -3-carbonyl]-amino¿-propyl)-4-phenyl-1-piperidine-4-carboxylic acid methyl ester), an analog of a series of dihydropyridines previously reported to be selective alpha1A-adrenoceptor subtype antagonists was found to have alpha1A-adrenoceptor subtype selectivity (Ki (nM), la = 1.3, lb = 240, Id = 280). Specific [125I]L-762,459 binding was detected in rat cerebral cortex, hippocampus, vas deferens, kidney, heart and prostate tissues known to contain the alpha1A-adrenoceptor subtype, but not in tissues known to contain alpha1B-adrenoceptor (spleen, liver) and alpha1D-adrenoceptor (aorta). Scatchard analysis of [125I]L-762,459 binding in rat cerebral cortex and prostate indicated a single binding site with a Kd of 0.7 nM and Bmax of 11 (cerebral cortex) and 1 (prostate) pmole/g tissue. Specific and saturable [125I]L-762,459 binding was also found in human cerebral cortex, liver, prostate and vas deferens (Kd = 0.2-0.4 nM, Bmax = 0.4-4 pmole/g tissue). The specific binding in rat and human tissues was competed by non-selective alpha1-adrenoceptor compounds (Ki values in nM: prazosin (0.14-1.2), terazosin (1.8-5.9) and phentolamine (2.4-11)) and selective alpha1A-adrenoceptor compounds [Ki values in nM: (+) niguldipine (0.04-1.2) and SNAP 5399 ((+/-)-2-((2-aminoethyl)oxy)methyl-5-carboxamido-6-ethyl-4-(4-nitropheny l)-3-N-(3-(4,4-diphenylpiperidin-1-yl)propyl)carboxamido-1,4-dihyd ropyridine hydrate (0.5-4.8)]. The results were consistent with the selective binding of [125I]L-762,459 to the alpha1A-adrenoceptor. The specific labeling of the alpha1A-adrenoceptor subtype by [125I]L-762,459 may make it a useful tool to localize the distribution of the alpha1A-adrenoceptor.
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Affiliation(s)
- S S O'Malley
- Department of Pharmacology, Merck Research Laboratories, West Point, PA 19486, USA
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50
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Chen TB, Wong JW, Zhou HY, Wong MH. Assessment of trace metal distribution and contamination in surface soils of Hong Kong. Environ Pollut 1997; 96:61-68. [PMID: 15093432 DOI: 10.1016/s0269-7491(97)00003-1] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/1996] [Accepted: 12/05/1996] [Indexed: 05/24/2023]
Abstract
An intensive investigation was conducted to study the distribution of trace metals in surface soils of Hong Kong and to assess the soil environmental quality. From results of cluster analysis, and comparisons among soil types and areas, it is clearly shown that increases in trace metal concentrations in the soils were generally extensive and obvious in urban and orchard soils, less so in vegetable soils, whilst rural and forest soils were subjected to the least impact of anthropogenic sources of trace metals. However, some of the forest soils also contained elevated levels of As, Cu, and Pb. Urban soils in Hong Kong were heavily polluted by Pb from gasoline combustion. Agricultural soils, both orchard and vegetable soils, usually accumulated As, Cd, Cu, and Zn originating from applications of pesticides, animal manures, and fertilizers. In general, trace metal pollution in soils of the industrial areas and Pb pollution in the soils of the commercial and residential areas were obvious.
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Affiliation(s)
- T B Chen
- Station for Agroecology and Environmental Technology, Institute of Geography, Chinese Academy of Sciences, 3 Datun Road, Beijing 100101, Republic of China
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