41 results on '"Chang ST"'
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2. Performance of bioelectrochemical systems in treating exhaust gas with power generation: Effects of shock-load, shut-down episodes and microbial community.
- Author
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Lin CW, Chang ST, Chen C, Chang SH, and Liu SH
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- Acetone, Alkanesulfonic Acids, Electrodes, Oxygen chemistry, Protons, Wastewater chemistry, Bioelectric Energy Sources microbiology, Microbiota
- Abstract
A diffusive packed anode-bioelectrochemical (Dpa-Bes) system was constructed by feeding waste gas from the cathode to the anode tank in DPa-Bes through a proton exchange membrane (PEM). The high removal of oxygen by the PEM and the effective combination of the two packing materials reduced the electron loss and enhanced the proton transfer capacity, promoting the removal of acetone from the exhaust gas and increasing the output power. The maximum acetone removal efficiency of the modified Dpa-Bes reached ∼99 % after seven days of closed-circuit operation, with a 3.2-fold increase in maximum power density and a 2.27-fold increase in closed-circuit voltage relative to those of the unmodified Dpa-Bes. When the acetone concentration was 2400 ppm, the removal efficiency was 73.22 % and the elimination capacity was at its highest value of 290.21 g/m
3 /h. Microbial analysis revealed that the conductive filter contained abundant facultative and anaerobic bacteria, whereas the non-conductive filter was rich in aerobic bacteria. The abundance of anaerobic and facultative microorganisms in Dpa-Bes was much higher than in the unmodified Dpa-Bes, and the dominant bacteria were Flavobacterium and Ferruginibacter., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)- Published
- 2022
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3. Statins to prevent pacing-induced cardiomyopathy: Evidence from the bench applied to clinical studies.
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Lin YS, Lip GYH, Ho WC, Shi CS, Lin MH, Kuo TY, Chung CM, Chang ST, Chen YL, Chen HC, Lee WC, and Chen MC
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- Animals, Atorvastatin therapeutic use, Cardiac Pacing, Artificial, Humans, Rats, Stroke Volume, Swine, Ventricular Function, Left, Atrioventricular Block, Cardiomyopathies complications, Cardiomyopathies prevention & control, Hydroxymethylglutaryl-CoA Reductase Inhibitors pharmacology, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use
- Abstract
Background: Pacing-induced cardiomyopathy is an undesired outcome in patients with atrioventricular block (AVB), and our animal model showed lipotoxic cardiomyopathy after pacing., Objectives: The purpose of this study was to explore the mechanisms and clinical outcomes of statins in AVB patients receiving pacing., Methods: Rat ventricular cardiomyocytes were treated with atorvastatin, liver X receptor (LXR) agonist, and LXR antagonist during pacing. Pigs were divided into 3 groups: right ventricular pacing, pacing with concomitant atorvastatin treatment, and sham control. Clinically, we enrolled 1717 AVB patients who had received a permanent pacemaker from Chang Gung Memorial Hospital Medical database. The primary outcome (cardiovascular death or heart failure [HF] hospitalization) and individual outcome were compared between statin and nonstatin groups after inverse probability of treatment weighting., Results: Lipid accumulation in rat cardiomyocytes by pacing was significantly reduced by treatment with LXR agonist and atorvastatin, whereas LXR antagonist counteracted the atorvastatin effect on lipid expression. Left ventricular ejection fraction (LVEF) was significantly lower in the AVB pig pacing group compared to the group concomitantly treated with atorvastatin. Moreover, lipid accumulation and fibronectin expression were significantly ameliorated by concomitant treatment with atorvastatin. In the clinical study, the statin group had a significantly lower risk of the primary outcome event (hazard ratio [HR] 0.69; 95% confidence interval [CI] 0.56-0.84), less HF hospitalization (HR 0.45; 95% CI 0.30-0.67), and higher LVEF than the nonstatin group., Conclusion: In experimental models, atorvastatin ameliorated lipid accumulation in cardiomyocytes and fibrosis in left ventricular myocardium induced by pacing. Clinically, treatment with statins was associated with less HF hospitalization and cardiovascular death in AVB patients receiving pacemaker therapy., (Copyright © 2022 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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4. Racial/Ethnic Disparities/Differences in Hysterectomy Route in Women Likely Eligible for Minimally Invasive Surgery.
- Author
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Pollack LM, Olsen MA, Gehlert SJ, Chang SH, and Lowder JL
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- Adult, Black or African American statistics & numerical data, Cross-Sectional Studies, Female, Health Services Accessibility statistics & numerical data, Hispanic or Latino statistics & numerical data, Humans, Laparoscopy methods, Laparoscopy statistics & numerical data, Middle Aged, Minority Groups statistics & numerical data, Patient Selection, United States epidemiology, White People statistics & numerical data, Ethnicity statistics & numerical data, Healthcare Disparities ethnology, Healthcare Disparities statistics & numerical data, Hysterectomy methods, Hysterectomy statistics & numerical data, Minimally Invasive Surgical Procedures statistics & numerical data, Racial Groups statistics & numerical data
- Abstract
Study Objective: Evaluate racial/ethnic variation in hysterectomy surgical route in women likely eligible for minimally invasive hysterectomy., Design: Cross-sectional study., Setting: Multistate including Colorado, Florida, Maryland, New Jersey, and New York., Patients: Women aged ≥18 years without diagnoses of leiomyomas, obesity, or previous abdominopelvic surgery who underwent hysterectomy for benign conditions from the State Inpatient and Ambulatory Surgery Databases, 2010-2014., Interventions: None. Primary exposure is race/ethnicity., Measurements and Main Results: Racial/ethnic variation in annual hysterectomy rates and surgical route. To calculate hysterectomy rates per 100 000 women/year, denominators were adjusted for the proportion of women with previous hysterectomy. A marginal structural log binomial regression model was used to estimate adjusted standardized prevalence ratios (aPRs) for vaginal or laparoscopic vs abdominal hysterectomy, controlling for clustering within hospitals. In addition, hospitals were stratified into quintiles to examine surgical route in hospitals that serve a higher vs lower proportion of African American patients. A total of 133 082 adult women underwent hysterectomy for benign conditions from 2010 to 2014. Annual laparoscopic rates increased more slowly for African Americans (1.6-fold) than for whites (1.8-fold) and Hispanics (1.9-fold). African American and Hispanic women were less likely to undergo vaginal (aPR = 0.93; 95% confidence interval [CI], 0.90-0.96 and aPR = 0.95; 95% CI 0.93-0.97, respectively) and laparoscopic hysterectomy (aPR = 0.90; 95% CI, 0.87-0.94 and aPR = 0.95; 95% CI, 0.92-0.98, respectively) than white women; Asian/Pacific Islander women were less likely to undergo vaginal hysterectomy (aPR = 0.88; 95% CI, 0.81-0.96). Hospitals serving a higher proportion of African American persons performed more abdominal and fewer vaginal procedures across all groups, and more racial/ethnic minority women sought care at those hospitals than white women., Conclusion: African American, Hispanic, and Asian/Pacific Islander women eligible for minimally invasive hysterectomy were more likely than white women to receive abdominal hysterectomy. The proportion of all women undergoing abdominal hysterectomy was highest at hospitals serving higher proportions of African American persons. This difference in treatment type can lead to disparities in outcomes, in part owing to their association with complications., (Copyright © 2019 AAGL. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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5. Effect of initiating statin therapy on long-term outcomes of patients with dyslipidemia after intracerebral hemorrhage.
- Author
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Lin MS, Lin YS, Chang ST, Wang PC, Chien-Chia Wu V, Lin WY, and Chung CM
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- Aged, Biomarkers blood, Cerebral Hemorrhage diagnostic imaging, Cerebral Hemorrhage mortality, Databases, Factual, Drug Administration Schedule, Dyslipidemias blood, Dyslipidemias complications, Dyslipidemias mortality, Female, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors adverse effects, Male, Middle Aged, Recurrence, Retrospective Studies, Risk Assessment, Risk Factors, Taiwan, Time Factors, Treatment Outcome, Cerebral Hemorrhage complications, Dyslipidemias drug therapy, Hydroxymethylglutaryl-CoA Reductase Inhibitors administration & dosage, Lipids blood
- Abstract
Background and Aims: Intracerebral hemorrhage (ICH) has a higher mortality than ischemic stroke. Statin is beneficial for stroke, but high potency statin treatment has been associated with the risk of hemorrhagic stroke. The aim of this study was to assess the impact of initiating statin therapy after ICH on cardiovascular outcomes., Methods: Dyslipidemic patients were retrieved from the ICH population from the National Health Insurance Research Database in Taiwan. We retrospectively compared patients prescribed with and without statin treatment after ICH. Outcomes of interest were mortality, myocardial infarction, ischemic stroke, and hemorrhagic stroke during 5 years of follow-up., Results: Of 17,980 adult patients with ICH and dyslipidemia, 8927 were eligible for analysis over the study period, including 1613 patients receiving statin therapy and 7314 patients not taking statins. After propensity score matching, the mean age was 61.2 ± 12.2 years in the statin group and 61.6 ± 13.0 years in the non-statin group. Hypertension was dominant, followed by diabetes mellitus, and the mean estimated NIHSS score was 12.9. The patients who received statin therapy were associated with lower risks of all-cause mortality (12.7% vs. 21.3%; hazard ratio [HR], 0.54; 95% confidence interval [CI], 0.45-0.65), cardiovascular death (4.0% vs. 7.1%; HR, 0.54; 95% CI, 0.39-0.75) and ICH (5.4% vs. 8.5%; HR, 0.62; 95% CI, 0.46-0.83) compared to those who did not receive statins., Conclusions: Initiating statin therapy after ICH was associated with a decreased risk of recurrent ICH and mortality for dyslipidemia patients., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
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6. Cross-correlation between spine and hip joint kinematics differs in healthy individuals and subgroups of ankylosing spondylitis patients during trunk lateral flexion.
- Author
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Chang ST, Lai KL, Kuo FC, and Kao YS
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- Adult, Female, Healthy Volunteers, Humans, Male, Middle Aged, New York, Biomechanical Phenomena physiology, Hip Joint physiopathology, Muscle Contraction physiology, Range of Motion, Articular physiology, Spine physiopathology, Spondylitis, Ankylosing physiopathology
- Abstract
Background: The effects of sacroiliitis and syndesmophyte formation on the cross-correlation between spine and hip joint kinematics in ankylosing spondylitis (AS) are poorly understood., Objective: To investigate the cross-correlation between spine and hip joint kinematics differs in healthy individuals and ankylosing spondylitis patients during trunk lateral flexion., Methods: Fifty AS patients and thirty-nine healthy adults (controls) were recruited from a medical center. The patients were divided into two subgroups, namely the sacroiliitis (n = 28) and syndesmophyte (n = 22) subgroups. An inertial motion system was used to record kinematic data of spine, pelvic and hip joints during lateral trunk flexion. The maximal cross-correlation coefficient (CCF) and time lag of motion between the spine and hip joint were analyzed., Results: The syndesmophyte group had the smallest range of motion in all recorded motion. The sacroiliitis group exhibited higher thoracic flexion, pelvic pitch, and pelvic rotation than the other two groups. In the syndesmophyte group, the CCF between lumbar lateral flexion (LLF) and hip abduction were weakly and LLF and hip rotation were strongly correlated. Considering in time sequence, LLF occurred earlier than hip abduction and hip rotation during trunk lateral flexion; however, both AS subgroups exhibited longer time lags than in the control group., Conclusion: The cross-correlation between spine and hip joint kinematics differs in healthy individuals and AS patients during trunk lateral flexion. The motion pattern changes in patients with AS of differing severity may also alter the loads on the spine and hip joints., (Copyright © 2018. Published by Elsevier Ltd.)
- Published
- 2018
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7. Discontinuing or continuing statin following intracerebral hemorrhage from the view of a national cohort study.
- Author
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Chung CM, Lin MS, Liu CH, Lee TH, Chang ST, Yang TY, Pan KL, and Lin YS
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- Aged, Cerebral Hemorrhage drug therapy, Drug Administration Schedule, Female, Follow-Up Studies, Humans, Incidence, Male, Middle Aged, Mortality, Patient Discharge, Propensity Score, Retrospective Studies, Risk, Stress, Mechanical, Taiwan epidemiology, Time Factors, Cerebral Hemorrhage epidemiology, Dyslipidemias drug therapy, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use, Stroke drug therapy
- Abstract
Background and Aims: Statins improve clinical outcomes in patients with ischemic stroke but there is no evidence of the effect of continuing long-term statin therapy in patients with intracerebral hemorrhage (ICH). The aim of this study was to evaluate the impact of continuing statin after ICH., Methods: Data on patients with ICH was retrieved from the National Health Insurance Research Database of Taiwan. The final population was separated into two groups according to those who continued and those who discontinued statin treatment. All-cause mortality and cardiovascular outcomes were analyzed after a 3 year follow-up after propensity score matching (PSM)., Results: Of the 114,101 patients with ICH, who were initially enrolled, 2468 patients with dyslipidemia and ICH were included. After PSM, the benefit of statin therapy on mortality appeared from 1 year to the end of the 3-year follow-up period after discharge (statin group versus non-statin group: 4.9% vs.12.3% at 1 year (hazard ratio [HR], 0.38; 95% confidence interval [CI], 0.26-0.57) and 12.9% vs. 25.3% at the end of the 3 year follow-up period (HR, 0.45; 95% CI, 0.35-0.58). Compared with the patients using lipophilic statins, those using hydrophilic statins had a significantly lower incidence of all-cause mortality (HR = 0.65, 95% CI = 0.43-0.99). There were no differences between those prescribed moderate-intensity statins and those prescribed high-intensity statins in terms of stroke and all-cause mortality (HR = 0.76; 95% CI = 0.40-1.46)., Conclusions: There was a lower risk of all-cause mortality following ICH in patients who continued statin treatment compared with those without statin treatment, especially in those treated with hydrophilic statins., (Copyright © 2018. Published by Elsevier B.V.)
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- 2018
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8. Assessment of treatment outcomes of interstitial cystitis with hydrodistention and bladder training by O'Leary-Sant Interstitial Cystitis Symptom and Problem Indices.
- Author
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Huang MC, Hsieh CH, Chang WC, Chang ST, and Lee MS
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- Adult, Aged, Cystitis, Interstitial diagnosis, Cystitis, Interstitial physiopathology, Female, Humans, Hydrostatic Pressure, Middle Aged, Pain, Saline Solution administration & dosage, Surveys and Questionnaires, Urinary Bladder, Cystitis, Interstitial therapy, Treatment Outcome
- Abstract
Objective: To investigate whether the O'Leary-Sant Interstitial Cystitis Symptom Index (ICSI) and Interstitial Cystitis Problem Index (ICPI) is efficacy measure tool for interstitial Cystitis (IC) treatment with hydrodistention (HD) and bladder training (BT)., Materials and Methods: From January 2003 to March 2006, 108 consecutive IC patients were treated by HD and BT after HD. This study evaluated the efficacy of treatment with the specific questionnaire for IC, the ICSI and ICPI. Each patient filled out the questionnaire before HD and three months after HD and BT. The efficacy of the treatment was evaluated using the average scores of ICSI and ICPI., Results: The mean ± margin of error, (95% confidence interval) of total scores of ICSI and ICPI were 13.89 ± 2.95, (13.33-14.45) and 12.51 ± 2.50, (12.04-12.98) before HD, respectively, and were 2.70 ± 1.16, (2.44-2.95) and 1.99 ± 1.27, (1.71-2.26) (all p < 0.005) three months after HD and BT, respectively., Conclusion: O'Leary-Sant ICSI and ICPI is not only a screening tool for IC but also a useful assessment tool for IC treatment outcomes., (Copyright © 2018. Published by Elsevier B.V.)
- Published
- 2018
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9. Moderate to high intensity statin in dialysis patients after acute myocardial infarction: A national cohort study in Asia.
- Author
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Chung CM, Lin MS, Chang CH, Cheng HW, Chang ST, Wang PC, Chang HY, and Lin YS
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- Aged, Cardiovascular Diseases complications, Cardiovascular Diseases drug therapy, Case-Control Studies, Comorbidity, Female, Follow-Up Studies, Hospitalization, Humans, Kidney Failure, Chronic complications, Kidney Failure, Chronic mortality, Longitudinal Studies, Male, Middle Aged, Myocardial Infarction complications, Myocardial Infarction mortality, Propensity Score, Proportional Hazards Models, Retrospective Studies, Shock, Cardiogenic, Taiwan, Time Factors, Treatment Outcome, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use, Kidney Failure, Chronic therapy, Myocardial Infarction drug therapy, Renal Dialysis
- Abstract
Background and Aims: Statin is not beneficial for dialysis patients but moderate to high intensity statin is beneficial for patients after acute myocardial infarction (MI). The aim of this study was to evaluate the effect of moderate to high intensity statin on mortality, cardiovascular outcomes in dialysis patients after acute MI., Methods: Data on dialysis patients were retrieved from the National Health Insurance Research Database in Taiwan. Dialysis patients admitted for MI were selected and divided into two groups according to statin prescription or not after MI. All-cause mortality and cardiovascular outcomes after a 4-year follow-up were analyzed after propensity score matching (PSM)., Results: We identified 790 patients who received moderate to high intensity statin therapy and 1788 patients who did not receive any statins after acute MI and clinical outcomes were analyzed after 1:1 PSM. The benefit of statin on mortality therapy appeared from 1 year to the end of the 4-year follow-up period after hospitalization (statin group versus non-statin group: 22.9% vs. 31.1% at 1 year (HR: 0.70; 95% CI: 0.58-0.85); 48.0% vs. 55.1% at the end of the 4 years (HR: 0.76; 95% CI: 0.67-0.88)). In addition, the impact of statin therapy was stronger in patients with shock at admission (p = 0.035). There were no differences in any individual cardiovascular outcome or adverse event., Conclusions: Moderate to high intensity statin therapy might lower all-cause mortality in dialysis patients after acute MI, especially those with shock, but not influence cardiovascular outcomes and any adverse events., (Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2017
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10. Effects of statin therapy on cerebrovascular and renal outcomes in patients with predialysis advanced chronic kidney disease and dyslipidemia.
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Chung CM, Lin MS, Hsu JT, Hsiao JF, Chang ST, Pan KL, Lin CL, and Lin YS
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- Aged, Brain drug effects, Brain Ischemia prevention & control, Cohort Studies, Female, Hemorrhage prevention & control, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors therapeutic use, Male, Middle Aged, Renal Dialysis, Retrospective Studies, Brain blood supply, Dyslipidemias complications, Hydroxymethylglutaryl-CoA Reductase Inhibitors pharmacology, Kidney drug effects, Renal Insufficiency, Chronic complications, Renal Insufficiency, Chronic drug therapy
- Abstract
Background: Treatment with statin may be beneficial for patients with chronic kidney disease (CKD). However, the debate over the clinical importance of statin in patients with predialysis advanced CKD remains unresolved., Objectives: The objective of the article was to evaluate the effect of statin on mortality, cerebrovascular, and renal outcomes in patients with predialysis advanced CKD and dyslipidemia., Methods: Data on predialysis advanced CKD patients were retrieved from the National Health Insurance Research Database based on the guidelines for prescribing regular erythropoietin-stimulating agent in CKD patients. Patients with dyslipidemia were further selected and divided into 2 groups by their statin use after the prescribed erythropoietin-stimulating agent. All-cause mortality and cerebrovascular and renal outcomes were analyzed after propensity score matching., Results: There were 2016 and 14,412 patients in the statin and nonstatin groups. Their average follow-up periods were 3.7 and 3.0 years, respectively. After 1:2 propensity score matching, the annual all-cause mortality rate was higher in the nonstatin than in the statin group (143.99 vs 109.50 per 1000 person-years; P < .001; hazard ratio: 0.73; 95% confidence interval: 0.68-080). The annual risk of ischemic stroke (P = .186) and intracranial hemorrhage (P = .322) were not significantly different between the 2 groups. The nonstatin group had a higher risk of dialysis than the statin group (1269.45 vs 1095.00 per 1000 person-years; P = .002). Adverse events were not significant between the 2 groups., Conclusions: Statins may reduce the all-cause mortality and reduced the risk of dialysis in patients with predialysis advanced CKD and dyslipidemia. However, statins have no impact on ischemic-hemorrhage stroke., (Copyright © 2016 National Lipid Association. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
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11. Clinical whole-exome sequencing reveals a novel missense pathogenic variant of GNAO1 in a patient with infantile-onset epilepsy.
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Law CY, Chang ST, Cho SY, Yau EK, Ng GS, Fong NC, and Lam CW
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- Age of Onset, Female, Humans, Infant, Epilepsy genetics, Exome genetics, GTP-Binding Protein alpha Subunits, Gi-Go genetics, Mutation, Missense genetics, Sequence Analysis, DNA
- Abstract
Background: The cause of infantile-onset epilepsy is complex and is not easily recognized clinically, particularly in paediatric patients who present with non-specific neurological signs, no radiological abnormalities and no metabolic changes., Case: We report a case of infantile-onset epilepsy in a 10-month-old Chinese girl who presented with non-specific neurological signs, no radiological abnormalities and no biochemical disturbances. She first presented at birth with twitching movements and convulsions of an unknown aetiology. Ambulatory EEG showed epileptic rhythmic activities, the presence of asynchrony and runs of sharp waves over the right parietal and central areas. Given the non-specific neurological features and negative structural and biochemical findings, we applied clinical whole-exome sequencing (WES) to determine the underlying aetiology. WES revealed a novel heterozygous missense pathogenic variant, GNAO1:NM_020988.2:c.118G>A; NP_066268.1:p.Gly40Arg. A genetic analysis of the family confirmed the variant identified is a de novo mutation., Conclusions: Clinical WES can streamline genetic analysis and sort out pathogenic genes in an unbiased approach. GNAO1 is a disease-causing gene for the autosomal dominant form of early infantile epileptic encephalopathy. The novel pathogenic variant identified in this case should contribute to our understanding of the expanding spectrum of infantile-onset epilepsy., (Copyright © 2015 Elsevier B.V. All rights reserved.)
- Published
- 2015
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12. Relation of arterial stiffness assessed by brachial-ankle pulse wave velocity to complexity of coronary artery disease.
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Chung CM, Yang TY, Lin YS, Chang ST, Hsiao JF, Pan KL, Jang SJ, and Hsu JT
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- Aged, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Retrospective Studies, Ankle Brachial Index methods, Coronary Artery Disease diagnosis, Coronary Artery Disease physiopathology, Pulse Wave Analysis methods, Vascular Stiffness physiology
- Abstract
Background: The progression of atherosclerosis leads to increased arterial stiffness. The present study used brachial-ankle pulse wave velocity (baPWV) to evaluate the connection between arterial stiffness in patients with chest pain and the presence and extent of coronary artery disease (CAD)., Methods: On a retrospective basis, we analyzed the data of 703 consecutive patients who had undergone baPWV and an elective coronary angiogram for suspected CAD, between June 2010 and July 2012, at a single cardiovascular center., Results: The baPWV was one of the statistically meaningful predictors of significant CAD (diameter of stenosis >50%) in addition to diabetes and dyslipidemia in a multivariate analysis. When the extent of CAD was classified into nonsignificant or significant CAD (ie, 1-, 2- and 3-vessel disease), there was a significant difference in baPWV between the significant and nonsignificant CAD groups, but there was no difference in baPWV among the 3 significant CAD groups. Linear regression analyses showed that baPWV was significantly associated with the SYNTAX (SYNergy between percutaneous coronary intervention with TAXus and cardiac surgery) score. The cutoff value of baPWV at 1735 cm/s had a sensitivity of 55.6%, specificity of 62.4%, and area under receiver operating characteristic curve of 0.612 in predicting CAD., Conclusions: Arterial stiffness as determined by baPWV is associated independently with significant CAD in patients with angina. Arterial stiffness is related to CAD severity as assessed by the SYNTAX score. As a result, increased arterial stiffness assessed by baPWV is associated with the severity and presence of CAD.
- Published
- 2014
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13. Mushrooms and Health Summit proceedings.
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Feeney MJ, Dwyer J, Hasler-Lewis CM, Milner JA, Noakes M, Rowe S, Wach M, Beelman RB, Caldwell J, Cantorna MT, Castlebury LA, Chang ST, Cheskin LJ, Clemens R, Drescher G, Fulgoni VL 3rd, Haytowitz DB, Hubbard VS, Law D, Myrdal Miller A, Minor B, Percival SS, Riscuta G, Schneeman B, Thornsbury S, Toner CD, Woteki CE, and Wu D
- Subjects
- Agaricales growth & development, Congresses as Topic, Humans, Agaricales chemistry, Functional Food analysis, Health Promotion
- Abstract
The Mushroom Council convened the Mushrooms and Health Summit in Washington, DC, on 9-10 September 2013. The proceedings are synthesized in this article. Although mushrooms have long been regarded as health-promoting foods, research specific to their role in a healthful diet and in health promotion has advanced in the past decade. The earliest mushroom cultivation was documented in China, which remains among the top global mushroom producers, along with the United States, Italy, The Netherlands, and Poland. Although considered a vegetable in dietary advice, mushrooms are fungi, set apart by vitamin B-12 in very low quantity but in the same form found in meat, ergosterol converted with UV light to vitamin D2, and conjugated linoleic acid. Mushrooms are a rare source of ergothioneine as well as selenium, fiber, and several other vitamins and minerals. Some preclinical and clinical studies suggest impacts of mushrooms on cognition, weight management, oral health, and cancer risk. Preliminary evidence suggests that mushrooms may support healthy immune and inflammatory responses through interaction with the gut microbiota, enhancing development of adaptive immunity, and improved immune cell functionality. In addition to imparting direct nutritional and health benefits, analysis of U.S. food intake survey data reveals that mushrooms are associated with higher dietary quality. Also, early sensory research suggests that mushrooms blended with meats and lower sodium dishes are well liked and may help to reduce intakes of red meat and salt without compromising taste. As research progresses on the specific health effects of mushrooms, there is a need for effective communication efforts to leverage mushrooms to improve overall dietary quality., (© 2014 American Society for Nutrition.)
- Published
- 2014
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14. Kaempferol glycosides from the twigs of Cinnamomum osmophloeum and their nitric oxide production inhibitory activities.
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Lin HY and Chang ST
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- Animals, Anti-Inflammatory Agents, Non-Steroidal chemistry, Anti-Inflammatory Agents, Non-Steroidal isolation & purification, Anti-Inflammatory Agents, Non-Steroidal pharmacology, Cell Line, Tumor, Dinoprostone chemistry, Ethanol chemistry, Glycosides chemistry, Glycosides pharmacology, Inhibitory Concentration 50, Kaempferols chemistry, Kaempferols pharmacology, Lipopolysaccharides pharmacology, Macrophages chemistry, Macrophages drug effects, Magnetic Resonance Spectroscopy methods, Mice, Molecular Structure, Nitric Oxide chemistry, Plant Stems chemistry, Cinnamomum chemistry, Glycosides isolation & purification, Kaempferols isolation & purification, Nitric Oxide antagonists & inhibitors
- Abstract
In the present study, ethanolic extract of twigs from Cinnamomum osmophloeum led to isolate nine kaempferol glycosides including two new kaempferol triglycosides that were characterized as kaempferol 3-O-β-D-xylopyranosyl-(1→2)-α-L-arabinofuranosyl-7-O-α-L-rhamnopyranoside (1) and kaempferol 3-O-β-D-xylopyranosyl-(1→2)-α-L-rhamnopyranosyl-7-O-α-L-rhamnopyranoside (2). The structures of these compounds were assigned by the application of 1D and 2D NMR spectroscopy and other techniques. Among these nine compounds, kaempferol 7-O-α-L-rhamnopyranoside (9) revealed inhibitory effect against LPS-induced production of nitric oxide in RAW 264.7 macrophages with an IC(50) value of 41.2 μM. It also slightly reduced PGE(2) accumulation by 26% at the concentration of 50 μM., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2012
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15. Hydrodistention plus bladder training versus hydrodistention for the treatment of interstitial cystitis.
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Hsieh CH, Chang WC, Huang MC, Su TH, Li YT, Chang ST, and Chiang HS
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- Administration, Intravesical, Adult, Cystitis, Interstitial complications, Cystitis, Interstitial physiopathology, Dilatation methods, Female, Follow-Up Studies, Humans, Middle Aged, Treatment Outcome, Urinary Catheterization, Urodynamics physiology, Biofeedback, Psychology methods, Cystitis, Interstitial therapy, Lower Urinary Tract Symptoms etiology, Water administration & dosage
- Abstract
Objective: To assess the efficacy of hydrodistention (HD) followed by bladder training (BT) versus HD alone in patients with interstitial cystitis (IC)., Methods: A total of 70 patients with IC were included and randomly assigned to two groups: one treated with HD (HD group) and the other treated with HD plus BT (HD plus BT group). Each patient was followed up using a weekly diary for 8 weeks after HD and monthly thereafter for 6 months after HD. Evaluation parameters included age, duration of IC in years, how many doctors visited before treatment, urgency, bladder pain, daytime voided volume per void, nocturnal volume per void, daytime voids per day, and nocturia per day., Results: Age, duration of IC in years, doctors visited before treatment, and voiding profiles of patients before treatments between the two groups did not show statistical significance. However, at 24 weeks after HD, the proportions of urgency, and bladder pain of the HD group versus the HD plus BT group were 43.48% versus 10.71% (p = 0.008), and 34.78% versus 14.29% (p = 0.086), respectively. Concurrently, the mean ± standard deviation of daytime voided volume per void, nocturnal volume per void, daytime voids per day, and nocturia per day of the HD group and HD plus BT group are 212.2 ± 114.2 mL and 300.1 ± 90.2 mL (p = 0.005), 276.8 ± 113.0 mL and 360.0 ± 129.6 mL (p = 0.018), 8.2 ± 3.2 and 6.2 ± 1.4 (p = 0.010), and 2.2 ± 1.2 and 1.5 ± 0.7 (p = 0.019), respectively., Conclusion: HD followed by BT produced a statistically significantly better effect than HD alone in the treatment of patients with IC., (Copyright © 2012. Published by Elsevier B.V.)
- Published
- 2012
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16. Arterial stiffness is the independent factor of left ventricular hypertrophy determined by electrocardiogram.
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Chung CM, Lin YS, Chu CM, Chang ST, Cheng HW, Yang TY, Hsiao JF, Pan KL, and Hsu JT
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- Age Factors, Aged, Ankle blood supply, Blood Flow Velocity, Blood Pressure, Female, Humans, Hypertension physiopathology, Hypertrophy, Left Ventricular etiology, Logistic Models, Male, Middle Aged, Multivariate Analysis, Pulsatile Flow, Regression Analysis, Sex Factors, Taiwan, Aorta physiopathology, Brachial Artery physiopathology, Electrocardiography methods, Hypertension complications, Hypertrophy, Left Ventricular physiopathology, Vascular Stiffness
- Abstract
Introduction: Arterial stiffness may contribute to left ventricular hypertrophy (LVH). This study was conducted to evaluate the independent factor of LVH and the quantification of LVH by electrocardiogram (ECG) to predict the degree of aortic stiffness using brachial-ankle pulse wave velocity (baPWV) in subjects with hypertension., Materials and Methods: A total of 984 consecutive patients who were diagnosed as having essential hypertension were entered into the study. baPWV determination, ECG and blood sampling were performed after a 12-hour overnight fast. LVH was diagnosed using electrocardiography; Romhilt-Estes point score was subsequently calculated. Participants were separated into LVH and non-LVH groups. Additional factors associated with LVH were examined using multivariate analyses., Results: The non-LVH groups were younger (P = 0.001), had less men (P = 0.001), lower systolic and diastolic blood pressure and pulse pressure (P < 0.001 for each) and lower baPWV (P < 0.001). Stepwise multiple logistic regression analysis demonstrated that sex, age, systolic blood pressure and baPWV are independent factors. Using a baPWV value of 1825 cm/sec, the area under the receiver operating characteristic curve was 0.644 and the highest discriminating sensitivity and specificity were 60% and 65%, respectively., Conclusion: Aortic stiffness may be related to electrocardiographically determined LVH in patients with hypertension. Thus, stiffening of large arteries, together with increased systolic blood pressure, seems to significantly contribute to the pathogenesis of LVH. Quantification of LVH by ECG can also predict the degree of aortic stiffness.
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- 2012
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17. Percutaneous transluminal angioplasty for radial-cephalic fistulae with stenosis at the arteriovenous junction.
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Yang TY, Cheng HW, Weng HH, Chang ST, Chung CM, and Ko YS
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- Adult, Aged, Constriction, Pathologic diagnosis, Constriction, Pathologic therapy, Female, Follow-Up Studies, Humans, Male, Middle Aged, Radial Artery pathology, Retrospective Studies, Vascular Patency physiology, Angioplasty methods, Arteriovenous Fistula diagnosis, Arteriovenous Fistula therapy
- Abstract
Introduction: The aim of this study was to analyze the predictive factors for initial success and long-term patency of percutaneous transluminal angioplasty for radial-cephalic (RC) fistulae with stenosis at the arteriovenous junction (AVJ). Stenosis at the AVJ of RC fistulae involves both the feeding artery and drainage vein and is similar to a bifurcation lesion, which carries a worse outcome. The optimal intervention method for this type of lesion is currently unknown., Methods: Ninety-one percutaneous transluminal angioplasty procedures for stenosis at the AVJ of RC fistulae were reviewed retrospectively. Parameters including age, sex, location of the RC fistula (right or left arm), approach site (radial artery or cephalic vein) and involvement of proximal radial artery (PRA) dilatation were analyzed for initial procedure success and long-term patency rates., Results: The total initial success rate was 94.5%. The existence of total occlusion was recognized as the only factor significantly associated with a high procedural failure rate (39% versus 0%, P < 0.001). For long-term patency rate, the only significant factor was the involvement of PRA dilatation (P = 0.026 by Cox-Mantel and 0.03 by generalized Wilcoxon methods). The 6-month, 1-year and 18-month patency rates were 64%, 45.3% and 20.9%, respectively, for all procedures, and 70.7% versus 57.8%, 56.1% versus 35.6% and 36.6% versus 6.7% for procedures with and without PRA dilatation, respectively., Conclusions: In treating stenosis at the AVJ of RC fistulae, while initial procedural failure occurred mainly in occluded lesions, involvement of PRA dilatation was the only significant predictive factor associated with long-term patency.
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- 2012
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18. Differences in prevalence and severity of coronary artery disease by three metabolic syndrome definitions.
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Chang JJ, Chu CM, Wang PC, Lin YS, Pan KL, Jang SJ, and Chang ST
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- Adult, Aged, Aged, 80 and over, Coronary Artery Disease diagnosis, Female, Humans, Male, Metabolic Syndrome epidemiology, Middle Aged, Predictive Value of Tests, Prevalence, Coronary Artery Disease epidemiology, Metabolic Syndrome diagnosis
- Abstract
Background: People with metabolic syndrome (MS) are at increased risk for cardiovascular disease-associated morbidity and all-cause mortality. However, predicting the severity of coronary artery disease (CAD) according to different MS definitions is controversial. This study explores the prevalence and severity of CAD according to different MS definitions, focusing on their predictive value., Methods: We enrolled 690 Taiwanese adults with CAD in this study. Coronary artery lesions were classified by the modified American Heart Association-American College of Cardiology grading system. MS was diagnosed in 3 groups of randomly assigned subjects according to World Health Organization (WHO), International Diabetes Federation (IDF), and revised Adult Treatment Panel III (rATP III) criteria., Results: More MS components and more severe CAD were identified in the WHO group. Prevalence of MS in the WHO, IDF, and rATP III groups was 33.9%, 47.4%, and 52.8%, respectively (P < 0.001). Mean lesion and culprit vessel numbers were slightly higher in WHO-group patients. The WHO group had more complex stenoses with type C classification than did the IDF and rATP III groups (32.7%, 26.3%, and 28.1%; P = 0.041) and significantly more calcified stenoses (21.5%, 16.2%, and 16.4%; P = 0.027). In a comparison of CAD severity by complex morphology lesions, the area under the receiver operating characteristic curve was higher in the WHO group (0.552; 95% confidence interval, 0.509-0.595; P = 0.019)., Conclusion: Compared with IDF and rATP III definitions, the WHO definition of MS has superior predictive value of CAD severity in Taiwanese patients., (Copyright © 2012 Canadian Cardiovascular Society. Published by Elsevier Inc. All rights reserved.)
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- 2012
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19. Long-term effect of hysterectomy on urinary incontinence in Taiwan.
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Hsieh CH, Chang WC, Lin TY, Su TH, Li YT, Kuo TC, Lee MC, Lee MS, and Chang ST
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- Aged, Aged, 80 and over, Female, Humans, Middle Aged, Prevalence, Risk Factors, Taiwan epidemiology, Time, Uterine Cervical Neoplasms epidemiology, Uterine Cervical Neoplasms surgery, Uterine Prolapse epidemiology, Uterine Prolapse surgery, Hysterectomy adverse effects, Hysterectomy statistics & numerical data, Urinary Incontinence epidemiology
- Abstract
Objective: To investigate the effect of hysterectomy on urinary incontinence (UI) in Taiwanese women aged 60 or older., Materials and Methods: A nationwide epidemiologic study was conducted and a total of 2410 women were selected by a multistage random sampling method. Face-to-face interviews with 1517 women were completed. The prevalence of UI by hysterectomy, route of hysterectomy, medical reasons for hysterectomy, and years after hysterectomy were assessed by frequency and Pearson's χ(2) test using a significance level of less than 0.05., Results: The prevalence of hysterectomy in Taiwanese women aged 60 or older was 8.83% (134/1,517). Hysterectomy is a risk factor of UI (p=0.003) with the prevalence of UI estimated to be 42.38% (59/134) and that of nonhysterectomy group to be 27.96% (425/1380). Route of hysterectomy (p=0.825), reason for hysterectomy (p=0.060), and how many years after hysterectomy has been performed (p=0.562) were not associated with deteriorating symptoms of UI., Conclusion: There is a high prevalence of UI among women who have performed hysterectomy, but there is no significant relationship between UI and route of hysterectomy, reason for hysterectomy, including cervical cancer and uterine prolapsed, or year after hysterectomy., (Copyright © 2011. Published by Elsevier B.V.)
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- 2011
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20. Quantification of aortic stiffness to predict the degree of left ventricular diastolic function.
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Chung CM, Chu CM, Chang ST, Cheng HW, Yang TY, Wan PC, Pan KL, Lin YS, and Hsu JT
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- Adult, Aged, Ankle Brachial Index, Cohort Studies, Female, Humans, Hypertrophy, Left Ventricular etiology, Logistic Models, Male, Middle Aged, Aorta physiopathology, Diastole, Hypertension physiopathology, Ventricular Function, Left
- Abstract
Introduction: The association between the arterial stiffness and the severity of left ventricular (LV) diastolic function in hypertension has not been fully evaluated. This study was conducted to evaluate the relationship of aortic stiffness by brachial-ankle pulse wave velocity (baPWV) to parameters reflecting the atherosclerosis and the severity of LV diastolic function in patients with hypertension., Methods: LV ejection fraction, the ratio of peak velocity of early rapid filling and peak velocity of atrial filling (E/A ratio) and LV mass index were determined with echocardiography in 800 patients with hypertension. LV diastolic function was estimated by pulsed-tissue Doppler imaging (TDI) echocardiography, averaging diastolic mitral annular velocity measurements (Emav, Amav and Emav/Amav ratio) from 2 separate sites (basal septal and lateral). The baPWV was measured by the volume rendering method., Results: Stepwise multiple logistic regression analysis demonstrated that the independent factors of LV diastolic function were deceleration time, baPWV, age and Emav/Amav ratio. The receiver- operator characteristic curve demonstrated a baPWV of 1566 cm/sec was useful to discriminate mild LV diastolic dysfunction (sensitivity, 78%; specificity, 78%), and that a baPWV of 1730 cm/sec was useful to discriminate moderate LV diastolic dysfunction (sensitivity, 73%; specificity, 57%)., Conclusions: Increased baPWV relates not only to the parameters reflecting atherosclerosis but also to those reflecting LV diastolic dysfunction. TDI-detected LV diastolic dysfunction is accompanied by increased aortic stiffness in essential hypertension. Therefore, quantification of aortic stiffness can predict the degree of LV diastolic function.
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- 2010
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21. Coronary artery phenotypes in subjects with negative myocardial perfusion imaging and typical angina pectoris.
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Jang SJ, Chu CM, Yang TY, Lin YS, Tsai MF, and Chang ST
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- Adult, Aged, Aged, 80 and over, Angina Pectoris diagnosis, Coronary Angiography, Coronary Artery Disease diagnosis, Coronary Artery Disease pathology, Coronary Vessels pathology, Female, Humans, Male, Middle Aged, Thallium Radioisotopes, Tomography, Emission-Computed, Single-Photon, Angina Pectoris diagnostic imaging, Coronary Artery Disease diagnostic imaging, Coronary Vessels diagnostic imaging, Heart anatomy & histology, Heart diagnostic imaging
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Introduction: Limited data are available on coronary lesion morphology for patients with false-negative radionuclide findings together with typical angina symptoms., Methods: The study group consisted of 25 subjects with a negative pharmacological thallium (Tl)-201 single-photon emission computed tomography perfusion imaging study but typical angina symptoms and coronary artery disease (CAD) confirmed by coronary angiography. The control group included 690 subjects with a positive pharmacological Tl-201 single-photon emission computed tomography study and CAD., Results: The study group showed a significantly older and higher female ratio than the control group. Significant differences were found between the 2 groups in the presence of current smoking status and hypertension. A noticeably higher percentage of positive metabolic syndrome ratio, number of metabolic syndrome components, high waist-to-hip ratio percentage and high waist circumference percentage in the study group. The study group was noticeably lower in mean numbers of culprit vessel involvement and mean lesion numbers than the control group. There were more individuals with type A classification and a lower proportion of complex stenoses--which contain type B2 and C lesions--in the study group than in the control group. The study group had significantly fewer calcified stenoses and complex morphology stenoses--the latter of which include lesion morphologies with chronic total occlusion, diffuse and calcification--than the control group., Conclusions: For the high probability of CAD lesions that requires interventional therapy, patients with negative myocardial scintigraphy but typical angina symptoms would be beneficial to intensive medical treatment and coronary study.
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- 2010
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22. Treatment of phenol-contaminated soil by Corynebacterium glutamicum and toxicity removal evaluation.
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Lee SY, Kim BN, Han JH, Chang ST, Choi YW, Kim YH, and Min J
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- Chromatography, Gas, Phenols toxicity, Soil Pollutants toxicity, Corynebacterium glutamicum metabolism, Phenols analysis, Soil Pollutants analysis
- Abstract
Biodegradation of phenol-contaminated soils using Corynebacterium glutamicum, was optimized in this study. Phenol degradation by C. glutamicum was observed in soil supplemented with 1% yeast extract as a substrate. We determined the optimal inoculation size of C. glutamicum (7.4 log(10) CFU mL(-1)) for the degradation of phenol-contaminated soil. Under optimal conditions (1% yeast extract and 7.4 log(10) CFU mL(-1) of C. glutamicum), the efficiency of phenol degradation in soil was greater than 94% at three days after treatment. The degradation of phenol-contaminated soil by C. glutamicum was evaluated using acute toxicity assays with Daphnia magna. Based on the acute toxicity assays, we found that the residual toxicity of contaminated soil was removed completely after three days of C. glutamicum treatment., (Crown Copyright 2010. Published by Elsevier B.V. All rights reserved.)
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- 2010
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23. Risk factors of urinary frequency among women aged 60 and older in Taiwan.
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Hsieh CH, Chang WC, Hsu MI, Chiang HS, Chang ST, Lee MC, Lee MS, Lu KP, Su TH, Lee SH, and Chen FM
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- Adult, Circadian Rhythm, Drug Hypersensitivity epidemiology, Estrogen Replacement Therapy statistics & numerical data, Female, Health Surveys, Humans, Parity, Prevalence, Risk Factors, Smoking epidemiology, Taiwan epidemiology, Body Mass Index, Diabetes Complications epidemiology, Diurnal Enuresis epidemiology, Hypertension epidemiology, Urination Disorders epidemiology
- Abstract
Objective: To assess the associated risk factors for daytime urinary frequency among Taiwanese women aged = 60 years., Materials and Methods: Daytime urinary frequency, defined by the International Continence Society, and its associated problems were evaluated, and medical history and sociodemographic variables were recorded. A total of 2,410 women were selected by a multistage random sampling method. The factors were assessed by frequency and Pearson's ?2 test using a significance level of < 0.05., Results: A total of 621 women of those initially selected in the study died before completion of this study. Face-to-face interviews with 1,521 women were completed, producing a response rate of 85.0% (1,521/1,789 women). The prevalence of daytime urinary frequency was significantly related to body mass index (p = 0.018), diabetes mellitus (p = 0.017), hypertension (p = 0.015), previous drug allergy (p = 0.003), smoking (p = 0.005), hormone therapy (p = 0.019), parity (p = 0.019), and urinary incontinence (p = 0.000). However, there was no association between urinary frequency and previous gynecologic surgery, hysterectomy, alcohol consumption, marital status, childbirth, and age of menopause., Conclusion: The results of this study showed a relatively high risk of urinary frequency development in patients with urinary incontinence, diabetes mellitus, hypertension, obesity, and smoking that are preventable, modifiable, or controllable. Better quality of health education for these women, drawing their attention to the associated factors, may have an impact on the prevalence of urinary frequency., (Copyright © 2010 Taiwan Association of Obstetric & Gynecology. Published by Elsevier B.V. All rights reserved.)
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- 2010
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24. Prevalence of urinary frequency among women aged 60 years and older in Taiwan.
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Hsieh CH, Chang WC, Hsu MI, Lee MC, Lee MS, Chiang HS, Chang ST, Su TH, Lu KP, Lee SH, and Chen FM
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- Age Distribution, Aged, Aged, 80 and over, Female, Humans, Middle Aged, Prevalence, Taiwan epidemiology, Health Surveys, Menopause, Urination Disorders epidemiology
- Abstract
Objective: To evaluate the prevalence of daytime urinary frequency among Taiwanese women aged 60 years and older., Materials and Methods: There were an estimated 1.25 million female residents aged 60 years and over in Taiwan in 2000. A sample of 2,410 women was selected using a multistage random sampling method. Face-to-face visits with 1,523 women were completed by trained professional interviewers within 3 months of the subjects selection. Questions about urinary frequency and other lower urinary tract symptoms, sociodemographics, reproduction, and medical and surgical histories were recorded. The factors were assessed by frequency and Pearson's Chi-squared test using a significance level of < 0.05., Results: The prevalence of urinary frequency in Taiwanese women aged 60 years and over was 18.8% (286/1,521). The response rate was 85.0% (1,521/1,789). For those who complained of frequency, 45.8% voided 8-15 times a day, 37.8% voided 16-23 times a day, 1.7% voided 24-31 times and a day, and 14.7% voided more than 31 times a day. The prevalence of urinary frequency was significantly associated with age (p < 0.001)., Conclusion: Urinary frequency is a common symptom in menopausal women and is significantly related to age. More than half of the women interviewed experienced intervals of < 1 hour between visits to the restroom during the day.
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- 2009
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25. Role of ankle-brachial pressure index as a predictor of coronary artery disease severity in patients with diabetes mellitus.
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Chang ST, Chu CM, Hsu JT, Pan KL, Lin PG, and Chung CM
- Subjects
- Adult, Aged, Aged, 80 and over, Brachial Artery diagnostic imaging, Coronary Angiography, Coronary Artery Disease epidemiology, Coronary Artery Disease physiopathology, Diabetes Complications epidemiology, Diabetes Complications physiopathology, Female, Follow-Up Studies, Humans, Male, Middle Aged, Prevalence, Prognosis, Retrospective Studies, Risk Factors, Severity of Illness Index, Taiwan epidemiology, Tibial Arteries diagnostic imaging, Ultrasonography, Doppler, Blood Pressure physiology, Brachial Artery physiopathology, Coronary Artery Disease diagnosis, Diabetes Complications diagnosis, Tibial Arteries physiopathology
- Abstract
Background: Previous studies have reported a close correlation between low ankle-brachial pressure index (ABPI) and various cardiovascular risk factors. However, despite the well-established potential hazards of consequent coronary artery disease (CAD), no data exist on the relationship between ABPI and the severity of CAD, particularly in patients with diabetes mellitus (DM)., Methods: A total of 840 patients ranging from 35 to 87 years of age (mean [+/- SD] 63.9+/-10.2 years) with suspected CAD in a clinical practice were enrolled. All patients underwent ABPI measurements and coronary angiography. Patients were divided into four groups according to the results of ABPI measurements and the presence or absence of DM: group A had an ABPI value of at least 0.9 but no DM (A-/D-); group B had an ABPI value of at least 0.9 and DM (A-/D+); group C had an ABPI of less than 0.9 but no DM (A+/D-); and group D had an ABPI value of less than 0.9 and DM (A+/D+)., Results: Age was significantly higher in the A+ (groups C and D) than the A- patients (groups A and B). Moreover, men predominated in all four groups. Comparisons of sex distribution among the four groups revealed that group D had the highest percentage of women, while group A had the lowest. Total cholesterol level did not differ among the four groups, although group D tended to have the highest result. Patients in group D had the highest percentages of hypertension, hypercholesterol, hypertriglyceride, low high-density lipoprotein cholesterol and high low-density lipoprotein cholesterol among the four groups. Group D exhibited the highest triglyceride and uric acid levels, the lowest high-density lipoprotein cholesterol level, and the highest metabolic syndrome criteria number and percentage of metabolic syndrome. Furthermore, group D had the highest mean lesion numbers, mean numbers of target vessel involvement, stenoses with type C classification and complex morphology lesions (chronic total occlusion, diffuse or calcified lesions) among the four groups. There were still significant differences in lesion numbers (P<0.001) and numbers of target vessel involvement (P<0.001) for ABPI predicting CAD severity after controlling for the effects of DM and age. The sensitivity, specificity, positive predictive value and negative predictive value of using an ABPI of less than 0.9 to predict CAD differed significantly between patients with and without DM., Conclusions: ABPI is a useful noninvasive tool for predicting CAD severity, even in patients with DM.
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- 2009
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26. Risk factors for urinary incontinence in Taiwanese women aged 20-59 years.
- Author
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Hsieh CH, Lee MS, Lee MC, Kuo TC, Hsu CS, and Chang ST
- Subjects
- Adult, Age Distribution, Body Mass Index, Diabetes Mellitus epidemiology, Female, Humans, Hypertension epidemiology, Hysterectomy, Logistic Models, Menstruation, Middle Aged, Prevalence, Risk Factors, Smoking epidemiology, Taiwan epidemiology, Urinary Incontinence epidemiology
- Abstract
Objective: To assess the risk factors for urinary incontinence among Taiwanese women., Materials and Methods: A sample of 4,549 women was selected using a multistage random sampling protocol. The women selected were interviewed face-to-face by well-trained interviewers. The usual risk factors, which included marital status, age, body mass index, menstrual status, alcohol intake, drug allergy, diabetes mellitus, hypertension and gynecologic events, were evaluated. The factors were assessed by frequency analysis and logistic regression analysis using a significance level of less than 0.05., Results: A total of 3,537 women were successfully interviewed, producing a response rate of 77.8% (3,735/4,549). The prevalence of urinary incontinence increased significantly with marriage (21.7%; 95% confidence interval, CI, 20.2-23.2), alcohol intake (24.9%; 95% CI, 19.3-30.5), drug allergy (24.5%; 95% CI, 19.9-29.2), diabetes mellitus (40.3%; 95% CI, 29.3-51.2), hypertension (30.1%; 95% CI, 23.8-36.4), body mass index (odds ratio, 1.05 per unit increase; 95% CI, 1.02-1.09) and a previous gynecologic operation (25.5%; 95% CI, 19.9-31.2). Age was also a risk factor for urinary incontinence (odds ratio, 1.04; 95% CI, 1.03-1.05), but there was no relationship between urinary incontinence and parity, route of delivery, smoking or menstrual status., Conclusion: There is a high prevalence of urinary incontinence among women who suffer from diabetes or hypertension, or who have undergone a gynecologic operation, in particular hysterectomy. From a public health viewpoint, it is important to promote better health education in order to improve understanding of urinary incontinence and its risk factors and to increase the awareness of the availability of mainstream treatments.
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- 2008
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27. Hepatoprotective phytocompounds from Cryptomeria japonica are potent modulators of inflammatory mediators.
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Shyur LF, Huang CC, Lo CP, Chiu CY, Chen YP, Wang SY, and Chang ST
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- Animals, Carbon Tetrachloride toxicity, Cell Line, Chemical and Drug Induced Liver Injury, Female, Inflammation drug therapy, Liver Diseases drug therapy, Macrophages drug effects, Male, Mice, Mice, Inbred ICR, Molecular Structure, Prostaglandin-Endoperoxide Synthases metabolism, Skin drug effects, Skin metabolism, Wood chemistry, Cryptomeria chemistry, Cyclooxygenase Inhibitors chemistry, Cyclooxygenase Inhibitors pharmacology, Terpenes chemistry, Terpenes pharmacology
- Abstract
Cryptomeria japonica is an important plantation conifer tree in Asia. This study aimed to characterize the anti-inflammatory and hepatoprotective activities of the phytocompounds from C. japonica wood on LPS- or TPA-induced activation of proinflammatory mediators and CCl(4)-induced acute liver injury in mice. A CJH7-2 fraction was purified from C. japonica extracts following bioactivity-guided fractionation, and it exhibited significant activities on inhibition of NO production and iNOS expression as well as up-regulating HO-1 expression in LPS-stimulated macrophages. CJH7-2 also potently inhibits COX-2 enzymatic activity (IC(50)=5 microg/mL) and TPA-induced COX-2 protein expression in mouse skin (1mg/200 microL/site). CJH7-2 (10 mg/kg BW) can prevent CCl(4)-induced liver injury and aminotransferases activities in mice. Chemical fingerprinting analysis showed that terpenes are the major bioactive compounds in the CJH7-2 fraction. This is the first study to demonstrate that chemical constituents from the wood extract of C. japonica possess anti-inflammatory activities in vitro and in vivo that may play a role in hepatoprotection.
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- 2008
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28. Risk factors for nocturia in Taiwanese women aged 20-59 years.
- Author
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Hsieh CH, Chen HY, Hsu CS, Chang ST, and Chiang CD
- Subjects
- Adult, Age Factors, Body Mass Index, Diabetes Mellitus epidemiology, Drug Hypersensitivity epidemiology, Female, Gynecologic Surgical Procedures, Humans, Hypertension epidemiology, Interviews as Topic, Marital Status, Middle Aged, Risk Factors, Sampling Studies, Taiwan epidemiology, Nocturia epidemiology
- Abstract
Objective: To assess the risk factors for nocturia among Taiwanese women aged 20-59 years., Materials and Methods: A random sample of 4,549 women aged 20-59 years was selected by multistage sampling. A total of 3,537 women were interviewed face-to-face by well-trained interviewers and local public health nurses. The definition of lower urinary tract symptoms used is that as defined by the International Continence Society. Variables of sociodemography, medical histories, obstetric and gynecologic histories, and lower urinary tract symptoms were recorded. The factors were assessed by frequency and logistic regression analyses using a significance level of less than 0.05., Results: The prevalence of nocturia increased significantly with age (p < 0.001), body mass index (p < 0.001), diabetes mellitus (p = 0.024), hypertension (p = 0.001), previous gynecologic operation (p = 0.003), drug allergy (p = 0.036), and marital status (p = 0.000). However, there was no relationship between nocturia and smoking, alcohol consumption, parity, hysterectomy, menopause or hormone therapy., Conclusion: Although the answers to the etiology of nocturia are still not all known, nocturia has been associated with various factors, suggesting that multiple approaches are necessary in the treatment of patients with nocturia.
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- 2007
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29. Prevalence of nocturia in Taiwanese women aged 20-59 years.
- Author
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Hsieh CH, Chen HY, Hsu CS, Chang ST, and Chiang CD
- Subjects
- Adult, Age Distribution, Body Size, Female, Health Surveys, Humans, Middle Aged, Prevalence, Taiwan epidemiology, Nocturia epidemiology
- Abstract
Objective: To estimate the prevalence of nocturia in Taiwanese women aged 20-59 years., Materials and Methods: A random sample of 4,549 women within the age range was selected by a multistage sampling design. Face-to-face visits with 3,537 women were completed by well-trained professional interviewers. Nocturia, according to the definition of the International Continence Society, and its associated problems were evaluated and, concurrently, variables of medical histories and sociodemography were recorded., Results: The response rate was 77.8%, and a total of 930 of 3,521 women reported having had nocturia, producing a prevalence of nocturia of 26.4%, with 16 not answering the question about nocturia. For those who had nocturia, 88.9% of the interviewees reported < or = 2 voids per night and 1.6% of these women reported having to void > or = 5 times per night., Conclusion: Nocturia is a common condition among Taiwanese women, especially among the elderly. Its prevalence is significantly related to age. Treatment of this condition in this patient population can both improve their quality of life and reduce the risk of deterioration in their general state of health.
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- 2007
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30. Risk factors for urinary frequency in Taiwanese women aged 20-59 years.
- Author
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Hsieh CH, Chen HY, Hsu CS, Chang ST, Kuo TC, and Chiang CD
- Subjects
- Data Collection, Female, Humans, Parity, Pregnancy, Prevalence, Risk Factors, Taiwan epidemiology, Urination Disorders etiology, Diabetes Complications epidemiology, Gynecologic Surgical Procedures, Hypertension complications, Postoperative Complications epidemiology, Urination Disorders epidemiology
- Abstract
Objective: To evaluate the risk factors for daytime urinary frequency in Taiwanese women aged 20-59 years., Materials and Methods: In 1998, there were about 5.9 million female residents aged 29-59 years in Taiwan. A random sample of 4,549 women within this age group was chosen by multistage sampling. Face-to-face interviews with 3,537 women were completed by well-trained professional interviewers within 3 months of the subjects being selected. Answers to questions about lower urinary tract symptoms, sociodemography and past histories were recorded. The factors were assessed by frequency analysis and logistic regression analysis using a significance level of less than 0.05., Results: The prevalence of daytime urinary frequency was significantly related to diabetes mellitus (p = 0.038), hypertension (p = 0.016) and previous gynecologic surgery (p = 0.005). However, there was no relationship between urinary frequency and body mass index, drug allergy, smoking, alcohol consumption, marital status, childbirth, parity, hysterectomy, menopause, hormone replacement therapy or age., Conclusion: The results of this study show relatively high risk of urinary frequency development in patients with diabetes mellitus or hypertension. Better quality health education of these women, drawing their attention to the possibility of gynecologic surgery, is the most important factor in making current gynecologic surgery more effective. In addition, more attention given to associated factors that are preventable, modifiable or controllable, for example diabetes or hypertension, may have an impact on the prevalence of urinary frequency.
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- 2006
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31. Ankle-arm index as a predictor of lesion morphology and risk classification for coronary artery disease undergoing angioplasty.
- Author
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Chang ST, Chen CL, Chu CM, Chung CM, Hsu JT, Cheng HW, Yang TY, and Hung KC
- Subjects
- Aged, Ankle, Arm, Blood Pressure, Blood Pressure Determination, Coronary Artery Disease surgery, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Risk Assessment, Severity of Illness Index, Angioplasty, Coronary Artery Disease pathology, Coronary Artery Disease physiopathology
- Abstract
Background: Low ankle-arm systolic blood pressure index is strongly correlated with various cardiovascular risk factors. However, although the potential hazards of resulting coronary artery disease (CAD) are well established, no data is available regarding how ankle-arm index (AAI) and CAD severity are related., Methods: This study enrolled 477 patients and all patients underwent coronary angiography and AAI measurements. Based on AAI values, patients were divided into study (AAI value of <0.9, 126 patients) and control groups (AAI value of >or=0.9, 351 patients)., Results: Among baseline characteristics, the study group showed a significantly older and higher female ratio than the control group. The presence of hypertension, diabetes mellitus (DM), current smoking status and LDL-cholesterol level differed significantly between these two groups. Mean number of lesions and target vessel involvement were significant different between the study and control group (2.6+/-1.1 vs. 1.9+/-1.0, p<0.0001; 2.0+/-0.8 vs. 1.6+/-0.7, p<0.0001). Percentages of lesion sites on ostial and proximal portions were markedly high in the study group than in the control group. Significant differences also emerged in the complex stenotic lesions (B2 or C) and lesion morphology (calcified, chronic total occlusion, irregular, bifurcation and diffuse) of these two groups. Multivariate logistic regression analysis, showed that AAI is a statistically significant independent predictor for lesion site, complex stenotic lesions and lesion morphology with Odds ratios (ORs) of, respectively, 1.728, 2.880 and 2.71., Conclusions: The AAI is a useful non-invasive tool for the prediction of CAD severity.
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- 2006
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32. Prevalence of urinary frequency in Taiwanese women aged 20-59 years.
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Hsieh CH, Chen HY, Hsu CS, Chang ST, Kuo TC, and Chiang CD
- Subjects
- Adult, Female, Humans, Logistic Models, Middle Aged, Prevalence, Surveys and Questionnaires, Taiwan epidemiology, Urination Disorders epidemiology
- Abstract
Objective: To evaluate the prevalence of daytime urinary frequency among Taiwanese women aged 20-59 years., Materials and Methods: In 1998, there were an estimated 5.9 million female residents aged 20-59 years in Taiwan. A random sample of 4,549 women was chosen by multistage sampling. Face-to-face visits with 3,537 women were completed by trained professional interviewers within 3 months of the subjects' selection. Questions about lower urinary tract symptoms, sociodemographics, reproduction, and medical and surgical histories were recorded. The factors were assessed by frequency and logistic regression analyses using a significance level of less than 0.05., Results: The prevalence of urinary frequency in Taiwanese women aged 20-59 years was 5.2% (182/3,519); 18 interviewees did not answer the question about frequency and were excluded. For those who complained of frequency, 47.2% voided 8-15 times a day, 37.4% voided 16-23 times a day, 1.1% voided 24-31 times a day and 14.3% voided more than 31 times a day. The prevalence of urinary frequency was not linked to age (p = 0.326)., Conclusion: Urinary frequency is a common symptom in women of all ages and is not significantly related to age. More than half of the women interviewed admitted that less than an hour occurred between visits to the restroom during the daytime.
- Published
- 2006
- Full Text
- View/download PDF
33. Resolution of intractable hiccups after near-infrared irradiation of relevant acupoints.
- Author
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Chang CC, Chang ST, Li TY, Chiang SL, Tsai KC, and Lin JC
- Subjects
- Aged, Hiccup etiology, Humans, Light, Male, Moxibustion, Stroke complications, Acupuncture Points, Hiccup therapy, Phototherapy methods, Stroke therapy
- Abstract
Background: Intractable hiccups are occasionally encountered in the presence of stroke but are usually difficult to manage., Methods: We describe two stroke patients with intractable hiccups that were refractory to pharmacological treatment but were well resolved by application to relevant acupoints with the modality linear polarized near-infrared ray equipment on PC 6 (Nei Guan), ST 36 (Zu San Li), and DU 9 (Chih Yang), which are the empirical acupoints aimed at regulating gastrointestinal mobility and function of the thoracic organ., Results: The first patient who received the treatment for only one time came out with a dramatic termination of intractable hiccups 3 hours later and with no recurrence thereafter. We applied the same treatment on the second patient once a day for 8 consecutive days, which led to progressive amelioration of intractable hiccups., Conclusions: This is the first report about the complete resolution of intractable hiccups due to stroke using near-infrared irradiation to acupoints, rather than using conventional pharmacologic therapy, traditional acupuncture, or moxibustion. Consequently, these findings suggest that linear polarized near-infrared ray irradiation, with its noninvasive properties, might be an alternative treatment for intractable hiccups after stroke.
- Published
- 2006
- Full Text
- View/download PDF
34. KIAA0649, a 1A6/DRIM-interacting protein with the oncogenic potential.
- Author
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Yang L, Zhao J, Lü W, Li Y, Du X, Ning T, Lu G, and Ke Y
- Subjects
- Animals, COS Cells, Cell Line, Tumor, Cell Proliferation drug effects, Cell Transformation, Neoplastic, Chlorocebus aethiops, Female, HeLa Cells, Humans, Male, Mice, Mice, Nude, NIH 3T3 Cells, Nuclear Proteins, Protein Phosphatase 1, Ribonucleoproteins, Two-Hybrid System Techniques, Nerve Tissue Proteins metabolism, Oncogene Proteins metabolism, Proteins metabolism
- Abstract
We identified a 1A6/DRIM (down-regulated in metastasis) interacting protein, KIAA0649 during the yeast two-hybrid screen. The interaction between KIAA0649 and 1A6/DRIM was further confirmed by GST-pull-down and co-immunoprecipitation assays. KIAA0649 was originally identified from human brain tissue. However, its biological function remains unknown. In this report, we showed that KIAA0649 mRNA is widely expressed in human multiple tissues and cell lines. We have also demonstrated that KIAA0649 has oncogenic characteristics: it enhances colony formation, allows anchorage-independent growth. Moreover, KIAA0649 exogenous expression in NIH3T3 fibroblasts caused tumor development in nude mice.
- Published
- 2005
- Full Text
- View/download PDF
35. Cytotoxicity of extractives from Taiwania cryptomerioides heartwood.
- Author
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Chang ST, Wang DS, Wu CL, Shiah SG, Kuo YH, and Chang CJ
- Subjects
- Antineoplastic Agents, Phytogenic pharmacology, Furans pharmacology, HT29 Cells, Humans, Lignans pharmacology, Plant Extracts pharmacology, Tumor Cells, Cultured, Antineoplastic Agents, Phytogenic isolation & purification, Cycadopsida chemistry, Furans isolation & purification, Lignans isolation & purification
- Abstract
The cytotoxicity of the dominant lignans and sesquiterpenoids from Taiwania (Taiwania cryptomerioides Hayata) was investigated. Three human tumor cells including A-549 lung carcinoma. MCF-7 breast adenocarcinoma and HT-29 colon adenocarcinoma were selected to illustrate the structure-cytotoxicity relationships of Taiwania's dominant compounds. Taiwanin A, taiwanin E and dimethylmatairesinol exhibited significant cytotoxicity against three human tumor cells. Among them, taiwanin A possesses the strongest cytotoxic activity. In addition, the morphology-based evaluation, flow cytometric analysis, and DNA fragmentation assays demonstrated that the tumor cell death induced by taiwanin A was due to apoptosis.
- Published
- 2000
- Full Text
- View/download PDF
36. Free radical scavenging activities of mushroom polysaccharide extracts.
- Author
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Liu F, Ooi VE, and Chang ST
- Subjects
- Free Radical Scavengers chemistry, Fungal Proteins analysis, Lentinan chemistry, Lentinan pharmacology, Lipid Peroxidation drug effects, Malondialdehyde metabolism, Polysaccharides chemistry, Proteoglycans chemistry, Proteoglycans pharmacology, Antineoplastic Agents pharmacology, Basidiomycota chemistry, Free Radical Scavengers pharmacology, Hydroxyl Radical metabolism, Polysaccharides pharmacology, Superoxides metabolism
- Abstract
The superoxide and hydroxyl radical scavenging activities of eight mushroom antitumor polysaccharide extracts were investigated using phenazin methosulphate-NADH-nitroblue tetrazolium system and ascorbic acid-Cu(2+)-cytochrome C system respectively. The results showed that six of eight mushroom polysaccharide extracts had superoxide and hydroxyl radical scavenging activities. The protein content of the polysaccharide extracts appeared to contribute a direct effect on free radical scavenging activity. However, none of the mushroom polysaccharide extracts had antioxidative activity as measured by detecting malondialdehyde (MDA) contents of liver microsomes.
- Published
- 1997
- Full Text
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37. Polysaccharide-peptide complexes from the cultured mycelia of the mushroom Coriolus versicolor and their culture medium activate mouse lymphocytes and macrophages.
- Author
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Wang HX, NG TB, Liu WK, Ooi VE, and Chang ST
- Subjects
- Animals, Cell Line, Culture Media, Culture Techniques, Humans, Macrophages metabolism, Male, Mice, Mice, Inbred BALB C, Mice, Inbred C57BL, Nitrites metabolism, Spleen cytology, Stimulation, Chemical, Tumor Cells, Cultured, Basidiomycota chemistry, Macrophages drug effects, Mitogens pharmacology, Peptides chemistry, Polysaccharides chemistry, Spleen drug effects
- Abstract
The aim of this study was to investigate the effects of the mushroom Coriolus versicolor on cells of the immune system. The cultured mycelia of the mushroom Coriolus versicolor and their culture medium were separately extracted with boiling water. The resulting polysaccharopeptide preparations were designated intramycelial (IM) and extramycelial materials (EM), and were separated by gel filtration before determining their effects on lymphocytes and macrophages in vitro and in vivo. After gel filtration on Sepharose 6B, only a single peak with a molecular weight of 13-19 KDa was obtained. Gel filtration of IM and EM on Sephadex G-50 revealed the presence of a larger peak of 28 KDa (from IM) and 15 KDa (from EM) and a smaller peak of 3.5 KDa. IM, EM and their large molecular peaks enhanced the mitogenic response of T-cells from BALB/c mice in vitro. Splenocytes from C57BL/6 mice pre-treated by force-feeding with IM and EM demonstrated an augmented mitogenic response to Con A. The macrophages of C57BL/6 mice that had been pre-treated with IM or EM showed an enhanced production of nitrite ions. The results indicate that both mouse lymphocytes and macrophages were activated by preparations of polysaccharopeptide from cultured mycelia and culture medium of C. versicolor. However, no direct cytotoxic activity against fibroblasts, hepatoma cells and choriocarcinoma cells could be demonstrated.
- Published
- 1996
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38. Potentiation of sodium butyrate-induced apoptosis by vanadate in human promyelocytic leukemia cell line HL-60.
- Author
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Chang ST and Yung BY
- Subjects
- Butyric Acid, Cell Division drug effects, Drug Synergism, HL-60 Cells, Humans, Phosphoproteins metabolism, Phosphorylation, Tyrosine metabolism, Apoptosis drug effects, Butyrates pharmacology, Vanadates pharmacology
- Abstract
Vanadate (10 microM ), a potent inhibitor of tyrosine phosphatase, added simultaneously potentiated the sodium butyrate (BuONa)-induced growth inhibition. Furthermore, at 1 mM BuONa alone, after 96 h of incubation, about 20 +/- 5% of cells exhibited the morphological characteristic of apoptosis, as established by nuclear changes (condensed and fragmented nuclei) and decrease in cell size. After treatment of cells with 1 mM BuONa in the presence of 10 microM vanadate, apoptotic cells became more abundant; 90 +/- 3% of cells presented morphological characteristics of apoptosis after 96 h of incubation. Flow cytometric measurement of DNA content demonstrated the accumulation of cells in G1 phase after 72 h of incubation with 1 mM BuONa alone. In the presence of vanadate (10 microM ), accumulation of cells in G1 phase appeared after shorter times of incubation (48 h) with BuONa. A substantial increase in the proportion of cells with degraded DNA characteristic of apoptosis was observed after 48- to 72-h incubation with BuONa in the presence of vanadate. BuONa-induced apoptosis was accompanied by the increase of tyrosine phosphorylation of cellular proteins pp37 and pp97. Our results raised the possibility that regulation of tyrosine phosphorylation of pp37 and pp97 is an important event that heralds the BuONa-induced apoptosis.
- Published
- 1996
- Full Text
- View/download PDF
39. Induction in the mouse of gene expression of immunomodulating cytokines by mushroom polysaccharide-protein complexes.
- Author
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Liu F, Fung MC, Ooi VE, and Chang ST
- Subjects
- Animals, Base Sequence, DNA Primers, Male, Mice, Mice, Inbred BALB C, Molecular Sequence Data, Nucleic Acid Hybridization, Polymerase Chain Reaction, Polysaccharides chemistry, Proteins chemistry, RNA, Messenger genetics, Basidiomycota chemistry, Cytokines genetics, Gene Expression Regulation, Polysaccharides pharmacology, Proteins pharmacology
- Abstract
Two antitumor polysaccharide-protein complexes, PSPC and PSK from mushrooms, were compared for their modulating effect on cytokine and cytokine receptor gene expression. RNA samples were isolated from the splenocytes and peritoneal exudate cells of the untreated or treated mice. Reverse transcription-polymerase chain reaction (RT-PCR) was used to analyze the cytokine gene expression. Nine out of 17 cytokine mRNAs and 5 out of 6 cytokine receptor mRNAs were detected in the splenocytes and peritoneal exudate cells from both untreated and treated mice. However, IL-4 was only detected in the splenocytes while IL-7 and IL-1R(typeI) were only detected in the peritoneal exudate cells. Among the 9 cytokine genes, the expression level of M-CSF was up-regulated in splenocytes and peritoneal exudate cells of the mice by PSPC and PSK. The expression level of TNF-alpha was only up-regulated in the peritoneal exudate cells by PSK, but not by PSPC.
- Published
- 1996
- Full Text
- View/download PDF
40. Immunomodulatory and antitumor activities of a polysaccharide-peptide complex from a mycelial culture of Tricholoma sp., a local edible mushroom.
- Author
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Wang HX, Liu WK, Ng TB, Ooi VE, and Chang ST
- Subjects
- Adjuvants, Immunologic isolation & purification, Animals, Antineoplastic Agents isolation & purification, Cell Division drug effects, Chromatography, Ion Exchange, Electrophoresis, Polyacrylamide Gel, Macrophage Activation drug effects, Male, Mice, Mice, Inbred Strains, Mitogens pharmacology, Nitrites metabolism, T-Lymphocytes drug effects, Adjuvants, Immunologic pharmacology, Antineoplastic Agents pharmacology, Basidiomycota chemistry, Peptides pharmacology, Polysaccharides pharmacology
- Abstract
A polysaccharide-peptide complex (PSPC) with immunomodulatory and antitumor activities was obtained from a submerged mycelial culture of Tricholoma sp., a local edible mushroom. The polysaccharide-peptide complex exhibited a molecular weight of 17 K in gel filtration and a single band after SDS-polyacrylamide gel electrophoresis. It was characterized by non-adsorption on both DEAE-Sepharose CL-6B and CM-cellulose. It could activate the macrophages, stimulate the proliferation of T-cells, and inhibit the growth of sarcoma 180 in mice. It possessed more potent immunomodulatory and antitumor activities than Coriolus versicolor polysaccharopeptide (PSP) and deserves to be studied as a potential agent for immunomodulation and cancer therapy.
- Published
- 1995
- Full Text
- View/download PDF
41. Hypotensive and renal effects of an extract of the edible mushroom Pleurotus sajor-caju.
- Author
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Tam SC, Yip KP, Fung KP, and Chang ST
- Subjects
- Animals, Electrolytes analysis, Glomerular Filtration Rate drug effects, Heart Rate drug effects, Kidney physiology, Plant Extracts analysis, Rats, Basidiomycota, Blood Pressure drug effects, Kidney drug effects, Plant Extracts pharmacology, Polyporaceae
- Abstract
An aqueous extract of Pleurotus sajor-caju was found to have a hypotensive effect in rats. Intravenous infusion of the extract into rats caused a decrease of the mean systemic blood pressure in a dose dependent manner. A typical dose of 25 mg of the extract decreased the mean systemic blood pressure from 110 mm Hg to 70 mm Hg. The systolic and diastolic pressure changed proportionally with minimal alteration in heart rate. The hypotensive effect of the extract was not due to its major electrolyte content because a solution reconstituted with the same electrolyte composition had a transient pressor effect rather than lowering the blood pressure. The same extract was also found to affect renal hemodynamics such that it caused a decrease in the glomerular filtration rate by more than 50% after 120 minutes. The effect did not seem to be mediated through changes in systemic blood pressure.
- Published
- 1986
- Full Text
- View/download PDF
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