223 results on '"Tsai KS"'
Search Results
2. Vitamin D inadequacy in postmenopausal women in Eastern Asia.
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Lim SK, Kung AW, Sompongse S, Soontrapa S, Tsai KS, Lim, S K, Kung, A W C, Sompongse, S, Soontrapa, S, and Tsai, K S
- Abstract
Objective: To review data on the prevalence of vitamin D inadequacy and its causes in postmenopausal women in Eastern Asia.Research Design and Method: Data were obtained from the published biomedical literature as well as abstracts and posters presented at scientific meetings. Using MEDLINE, EMBASE and BIOSIS databases (to July 2007), epidemiological studies were identified using the search terms: 'human', 'vitamin D', 'vitamin D deficiency', 'vitamin D inadequacy', 'vitamin D insufficiency' and 'hypovitaminosis D', 'osteomalacia' and 'osteoporosis'. Additional references were also identified from the bibliographies of published articles.Results: The prevalence of vitamin D inadequacy in studies of postmenopausal women (ambulatory or with osteoporosis or related musculoskeletal disorders) in Eastern Asia ranged from 0 to 92%, depending on the cut-off level of serum 25-hydroxycholecalciferol [25(OH)D] that was applied (range < or =6-35 ng/mL [< or = 15-87 nmol/L]). One large international study found that 71% of postmenopausal women with osteoporosis in Eastern Asia had vitamin D inadequacy, defined as serum levels of 25(OH)D < 30 ng/mL (75 nmol/L). Prevalence rates using this cut-off level were 47% in Thailand, 49% in Malaysia, 90% in Japan and 92% in South Korea. High prevalences of vitamin D inadequacy were evident in two studies using a lower 25(OH)D level cut-off value of < 12 ng/mL (30 nmol/L) - 21% in China and 57% in South Korea. Dietary deficiency and inadequate exposure or reactivity to sunlight (due to lifestyle choices, cultural customs and/or aging) were identified as important risk factors for vitamin D inadequacy.Conclusions: Non-uniform, epidemiological studies indicate a high prevalence of vitamin D inadequacy in postmenopausal women in Eastern Asia. Recommended remedial approaches are education campaigns and broad-based provision of vitamin D supplementation. [ABSTRACT FROM AUTHOR]- Published
- 2008
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3. The role of phosphoinositide 3-kinase/Akt signaling in low-dose mercury-induced mouse pancreatic beta-cell dysfunction in vitro and in vivo.
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Chen YW, Huang CF, Tsai KS, Yang RS, Yen CC, Yang CY, Lin-Shiau SY, Liu SH, Chen, Ya Wen, Huang, Chun Fa, Tsai, Keh Sung, Yang, Rong Sen, Yen, Cheng Chieh, Yang, Ching Yao, Lin-Shiau, Shoei Yn, and Liu, Shing Hwa
- Abstract
The relationship between oxidation stress and phosphoinositide 3-kinase (PI3K) signaling in pancreatic beta-cell dysfunction remains unclear. Mercury is a well-known toxic metal that induces oxidative stress. Submicromolar-concentration HgCl(2) or methylmercury triggered reactive oxygen species (ROS) production and decreased insulin secretion in beta-cell-derived HIT-T15 cells and isolated mouse islets. Mercury increased PI3K activity and its downstream effector Akt phosphorylation. Antioxidant N-acetyl-l-cysteine (NAC) prevented mercury-induced insulin secretion inhibition and Akt phosphorylation but not increased PI3K activity. Inhibition of PI3K/Akt activity with PI3K inhibitor or by expressing the dominant-negative p85 or Akt prevented mercury-induced insulin secretion inhibition but not ROS production. These results indicate that both PI3K and ROS independently regulated Akt signaling-related, mercury-induced insulin secretion inhibition. We next observed that 2- or 4-week oral exposure to low-dose mercury to mice significantly caused the decrease in plasma insulin and displayed the elevation of blood glucose and plasma lipid peroxidation and glucose intolerance. Akt phosphorylation was shown in islets isolated from mercury-exposed mice. NAC effectively antagonized mercury-induced responses. Mercury-induced in vivo effects and increased blood mercury were reversed after mercury exposure was terminated. These results demonstrate that low-dose mercury-induced oxidative stress and PI3K activation cause Akt signaling-related pancreatic beta-cell dysfunction. [ABSTRACT FROM AUTHOR]
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- 2006
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4. Association between Scabies Treatment and Parkinson's Disease: A Nationwide, Population-Based Study.
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Tsai KS, Lu MK, Liu CH, Tsai FJ, Chen WC, Chen HY, Lin HJ, Lin CL, Lee JC, Man KM, Ho CY, and Chen YH
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Background: Scabies is typically treated with scabicides like lindane, which poses a risk for acute neural toxicity. Lindane's prolonged use, particularly in agriculture, is linked to neurodegenerative diseases, including Parkinson's disease (PD), the second most common neurodegenerative disorder. This study aimed to evaluate whether scabies patients, particularly those treated with topical lindane, are at increased risk of developing PD., Methods: A nationwide population-based cohort study was conducted using data from Taiwan's National Health Research Institutes claims database from 2000 to 2018. The study included 27,173 patients with scabies, matched to a control group, with both groups followed for up to 18 years. The primary outcome was the incidence of newly diagnosed PD, and the hazard ratio (HR) for PD was calculated, focusing on those treated with topical lindane., Results: Among the 54,346 patients, 1639 (3.0%) were newly diagnosed with PD, with 993 (60.6%) from the scabies group and 646 (39.4%) from the control group. Scabies patients had an adjusted hazard ratio (aHR) of 1.46 (95% CI 1.32-1.63) for developing PD compared to controls. However, patients treated with topical lindane had a significantly lower aHR for PD at 0.15 (95% CI 0.12-0.19; p < 0.001), with a lower cumulative incidence of PD also observed in this group ( p < 0.001)., Conclusions: Scabies patients are at a 1.46-fold increased risk of developing PD, but those treated with lindane exhibit a significantly lower risk, suggesting potential protective effects of lindane against PD.
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- 2024
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5. Neurodevelopmental disorders in children born to mothers involved in maternal motor vehicle crashes.
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Chang YH, Chien YW, Chang CH, Chen PL, Lu TH, Yen CF, Chiou HY, Tsai KS, and Li CY
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Background: To evaluate the association between maternal MVCs during pregnancy and neurodevelopmental disorders (NDDs, including intellectual disability, ADHD, ASD, and infantile cerebral palsy) in children., Methods: This population-based cohort of live births in Taiwan was analyzed, comparing children born to mothers involved in MVCs during pregnancy with those without such exposure. Children were linked to the insurance database to identify the possible diagnosis of NDDs. The Cox proportional hazards regression model was used to estimate the relative hazards., Results: A total of 19,277 children with maternal MVCs and 76,015 children without exposure were included. Children exposed to maternal MVCs during the first two trimesters or whose mothers sustained mild to severe injuries showed a higher risk of intellectual disability. Severe maternal injuries also increased the risk of infantile cerebral palsy (aHR = 3.86; 1.27-11.78). MVCs in the third trimester, or mild maternal injuries, were associated with a higher risk of ASD (third trimester: aHR = 1.40; 1.04-1.87; mild injuries: aHR = 1.38; 1.09-1.74)., Conclusion: Children exposed to maternal MVCs with severe injuries had a higher risk of intellectual disability and cerebral palsy. Third-trimester exposure may increase the risk of ASD. However, these findings should be interpreted cautiously as genetic factors may contribute to the observed association., Impact: There is some evidence linking maternal MVCs during pregnancy to the development of neurodevelopmental disorders in children. Children of mothers with severely injured were more likely to suffer from infantile cerebral palsy and intellectual disability. The risk of autism spectrum disorder is higher in children whose mothers are involved in MVCs during the late stage of pregnancy, and there is also an increased risk of intellectual disability during the first two trimesters., Competing Interests: Competing interests The authors declare no competing interests. Ethics approval and consent to participate This study was approved by the Institutional Review Board of the National Cheng Kung University Hospital (No. B-ER-109-088)., (© 2024. The Author(s), under exclusive licence to the International Pediatric Research Foundation, Inc.)
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- 2024
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6. Retraction: Advanced Glycation End Products Induce Peroxisome Proliferator-Activated Receptor γ Down-Regulation-Related Inflammatory Signals in Human Chondrocytes via Toll-Like Receptor-4 and Receptor for Advanced Glycation End Products.
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Chen YJ, Sheu ML, Tsai KS, Yang RS, and Liu SH
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- 2024
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7. Asia-Pacific consensus on long-term and sequential therapy for osteoporosis.
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Tai TW, Chen HY, Shih CA, Huang CF, McCloskey E, Lee JK, Yeap SS, Cheung CL, Charatcharoenwitthaya N, Jaisamrarn U, Kuptniratsaikul V, Yang RS, Lin SY, Taguchi A, Mori S, Li-Yu J, Ang SB, Chan DC, Chan WS, Ng H, Chen JF, Tu ST, Chuang HH, Chang YF, Chen FP, Tsai KS, Ebeling PR, Marin F, Nistal Rodríguez FJ, Shi H, Hwang KR, Kim KK, Chung YS, Reid IR, Chandran M, Ferrari S, Lewiecki EM, Hew FL, Ho-Pham LT, Nguyen TV, Nguyen VH, Lekamwasam S, Pandey D, Bhadada S, Chen CH, Hwang JS, and Wu CH
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Objectives: This study aimed to present the Asia-Pacific consensus on long-term and sequential therapy for osteoporosis, offering evidence-based recommendations for the effective management of this chronic condition. The primary focus is on achieving optimal fracture prevention through a comprehensive, individualized approach., Methods: A panel of experts convened to develop consensus statements by synthesizing the current literature and leveraging clinical expertise. The review encompassed long-term anti-osteoporosis medication goals, first-line treatments for individuals at very high fracture risk, and the strategic integration of anabolic and antiresorptive agents in sequential therapy approaches., Results: The panelists reached a consensus on 12 statements. Key recommendations included advocating for anabolic agents as the first-line treatment for individuals at very high fracture risk and transitioning to antiresorptive agents following the completion of anabolic therapy. Anabolic therapy remains an option for individuals experiencing new fractures or persistent high fracture risk despite antiresorptive treatment. In cases of inadequate response, the consensus recommended considering a switch to more potent medications. The consensus also addressed the management of medication-related complications, proposing alternatives instead of discontinuation of treatment., Conclusions: This consensus provides a comprehensive, cost-effective strategy for fracture prevention with an emphasis on shared decision-making and the incorporation of country-specific case management systems, such as fracture liaison services. It serves as a valuable guide for healthcare professionals in the Asia-Pacific region, contributing to the ongoing evolution of osteoporosis management., Competing Interests: The authors disclosed the following conflicts of interest.1.Ta-Wei Tai received honoraria for lectures, meetings, and/or travel from Amgen and Alvogen/Lotus.2.Swan Sim Yeap has received honoraria for lectures from Amgen.3.Natthinee Charatcharoenwitthaya received honoraria for lectures, meetings, and/or travel from Amgen, Alvogen, and Zuellig Pharma.4.Akira Taguchi has received lecture fees from Asahi Kasei Pharma Corp., Daiichi Sankyo Co. Ltd, Chugai Pharmaceutical Co. Ltd, and Teijin Pharma Ltd.5.Peter R Ebeling has received research funding from Amgen, Alexion and Sanofi, and honoraria from Amgen, Alexion and Kyowa Kirin.6.Fernando Marin has received honoraria for lectures from DKSH and Zuellig Pharma. He is a former employee of Eli Lilly and Company.7.Yoon-Sok Chung has received research funding from Samsung Bioepis and honoraria from Amgen, Alvogen, Celltrion, Daewoong, Hanlim, and Yuyu.8.Ian R Reid has received speaking fees from Amgen and Medison Pharma.9.Manju Chandran has received honoraria and travel sponsorships from Amgen, DKSH, and Kyowa Kirin.10.E. Michael Lewiecki - Amgen: investigator, consultant, speaker; Radius: investigator, consultant; Kyowa Kirin: consultant, speaker; Ultragenyx: investigator; Angitia: consultant; Ascendis: consultant.11.Fen Lee Hew has received honoraria from Amgen and DKSH.12.Tuan Van Nguyen has received a global competitive grant from Amgen and honoraria from Amgen, DKSH, and Bridge Health Care, for giving lectures and travelling to meetings.13.Chung-Hwan Chen received honoraria for lectures, attending meetings, and/or travel from Amgen, and Alvogen/Lotus.14.Chih-Hsing Wu received honoraria for lectures, attending meetings, and/or travel from Eli Lilly, Roche, Amgen, Merck, Servier laboratories, GE Lunar, Harvester, TCM Biotech, and Alvogen/Lotus.15.The other authors reported that they have nothing to declare for potential conflicts of interest., (© 2024 The Korean Society of Osteoporosis. Publishing services by Elsevier B.V.)
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- 2024
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8. Cardiac screening in school children: Combining auscultation and electrocardiography with a crowdsourcing model.
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Lîm HK, Wang JK, Tsai KS, Chien YH, Chang YC, Cheng CH, Tsai CY, Peng YW, Hwang JJ, and Huei-Ming Ma M
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- Child, Adolescent, Humans, Electrocardiography adverse effects, Death, Sudden, Cardiac etiology, Mass Screening, Auscultation adverse effects, Crowdsourcing
- Abstract
Background/purpose: School-based cardiac screening is useful for identifying children and adolescents with a high risk of sudden cardiac death. However, because of challenges associated with cost, distance, and human resources, cardiac screening is not widely implemented, especially in rural areas with limited medical resources. This study aims to establish a cloud-based system suitable for mass cardiac screening of schoolchildren in rural areas with limited medical resources., Methods: Students from three schools were included. They or their guardians completed a simple questionnaire, administered in paper or electronic form. Heart sounds were recorded using an electronic stethoscope. Twelve-lead electrocardiograms (ECGs) were recorded and digitalized. The signals were transmitted through Bluetooth to a tablet computer and then uploaded to a cloud server over Wi-Fi. Crowdsourced pediatric cardiologists reviewed those data from a web-based platform and provided remote consultation. In cases in which abnormal heart sounds or ECGs were noted, the students were referred to the hospital for further evaluation., Results: A total of 1004 students were enrolled in this study. Of the 138 students referred, 62 were diagnosed as having an abnormal heart condition and most had previously been undiagnosed. The interrater agreeability was high., Conclusion: An innovative strategy combining a cloud-based cardiac screening system with remote consultation by crowdsourced experts was established. This system allows pediatric cardiologists to provide consultation and make reliable diagnoses. Combined with crowdsourcing, the system constitutes a viable approach for mass cardiac screening in children and adolescents living in rural areas with insufficient medical resources., Competing Interests: Conflict of interest The authors have no conflicts of interest relevant to this article., (Copyright © 2023. Published by Elsevier B.V.)
- Published
- 2023
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9. Epidemiology and clinical impact of osteoporosis in Taiwan: A 12-year trend of a nationwide population-based study.
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Lee MT, Fu SH, Hsu CC, Chen HM, Lin JW, Tsai KS, Hwang JS, Lin SC, Wu CH, and Wang CY
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Background: Osteoporosis increases the fracture and mortality risk of patients and has a higher disease burden than some cancers. Therefore, global concerns regarding the prevention and treatment of osteoporosis have been raised. However, fast-aging Taiwan lacks national epidemiological data on osteoporosis in recent years. We aimed to establish and update epidemiological data on osteoporosis by analyzing national data from 2008 to 2019., Methods: We estimated the prevalence and incidence of osteoporosis in patients aged ≥50 years based on claims data from Taiwan's National Health Insurance database from 2008 to 2019. We also analyzed the key parameters of fracture care (anti-osteoporosis medication use, bone mineral density examination rate, and length of hospital stay) to understand the secular trend of management and related clinical outcomes (imminent refracture rate and mortality)., Results: The number of prevalent osteoporosis increased from 2008 to 2015 and remained constant until 2019; however, the age-standardized prevalence and incidence rates declined from 2008 to 2019 (3.77%-2.91% and 2.08%-1.02%, respectively). The overall incidence rates of hip and spine fractures decreased significantly by 34% and 27%, respectively. For patients with hip and spine fractures, the immanent refracture rates were 8.5% and 12.9% and the 1-year mortality rate remained stable at approximately 15% and 6%, respectively., Conclusion: The age-standardized prevalence and incidence rates decreased remarkably from 2008 to 2019, while the number of prevalent osteoporosis remained steady. Patients with hip fractures encountered a high 1-year mortality rate, while the risk of imminent refracture was notable for patients with spine fractures., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023. Published by Elsevier B.V.)
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- 2023
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10. Asia-pacific consensus on osteoporotic fracture prevention in postmenopausal women with low bone mass or osteoporosis but no fragility fractures.
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Huang CF, Chen JF, Reid IR, Chan WP, Ebeling PR, Langdahl B, Tu ST, Matsumoto T, Chan DC, Chung YS, Chen FP, Lewiecki EM, Tsai KS, Yang RS, Ang SB, Huang KE, Chang YF, Chen CH, Lee JK, Ma HI, Xia W, Mithal A, Kendler DL, Cooper C, Hwang JS, and Wu CH
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- Female, Humans, Consensus, Postmenopause, Bone Density, Osteoporotic Fractures prevention & control, Osteoporosis, Postmenopausal complications, Osteoporosis, Postmenopausal drug therapy, Osteoporosis, Postmenopausal prevention & control, Osteoporosis
- Abstract
Postmenopausal women are at significant risk for osteoporotic fractures due to their rapid bone loss. Half of all postmenopausal women will get an osteoporosis-related fracture over their lifetime, with 25% developing a spine deformity and 15% developing a hip fracture. By 2050, more than half of all osteoporotic fractures will occur in Asia, with postmenopausal women being the most susceptible. Early management can halt or even reverse the progression of osteoporosis. Consequently, on October 31, 2020, the Taiwanese Osteoporosis Association hosted the Asia-Pacific (AP) Postmenopausal Osteoporotic Fracture Prevention (POFP) consensus meeting, which was supported by the Asian Federation of Osteoporosis Societies (AFOS) and the Asia Pacific Osteoporosis Foundation (APOF). International and domestic experts developed ten applicable statements for the prevention of osteoporotic fractures in postmenopausal women with low bone mass or osteoporosis but no fragility fractures in the AP region. The experts advocated, for example, that postmenopausal women with a high fracture risk be reimbursed for pharmaceutical therapy to prevent osteoporotic fractures. More clinical experience and data are required to modify intervention tactics., Competing Interests: Declaration of competing interest Chih-Hsing Wu received honoraria for lectures, attending meetings, and/or travel from Eli Lilly, Roche, Amgen, Merck, Servier laboratories, GE Lunar, Harvester, TCM Biotech, and Alvogen/Lotus. E Michael Lewiecki is an investigator, consultant, and speaker for Amgen, and an investigator for Radius., (Copyright © 2023 Formosan Medical Association. Published by Elsevier B.V. All rights reserved.)
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- 2023
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11. A longitudinal analysis of serum adiponectin levels and bone mineral density in postmenopausal women in Taiwan.
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Tai TY, Chen CL, Tsai KS, Tu ST, Wu JS, and Yang WS
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- Female, Humans, Longitudinal Studies, Lumbar Vertebrae, Postmenopause, Taiwan, Adiponectin blood, Bone Density
- Abstract
Since bone and fat mass are derived from mesenchyme in early development, adipokines secreted by adipose tissue may have an effect on bone metabolism. The relationship between adiponectin and bone mineral density (BMD) has been inconsistent in previous reports, with results being dependent on age, gender, menopausal status and bone sites. We investigated the relationship between serum adiponectin levels and the BMD of proximal femur and vertebrae bones in a 96-week longitudinal study of post-menopausal women with repeated measures of both. Linear regression models were used to determine the relation between adiponectin and BMD at each time point cross-sectionally, and a generalized estimating equation (GEE) model was used to investigate the longitudinal trends. Among 431 subjects, 376 (87%) provided baseline adiponectin measurements and 373 provided more than two measurements for longitudinal analysis. The means of serum adiponectin and BMD decreased with time. In linear regression models, adiponectin at baseline, the 48th week and the 96th week appeared to be inversely associated with BMD of proximal femur bone, but not lumbar spine after adjusting for age and various confounders. However, they all turn insignificant with further adjustment of body mass index. The inverse association between adiponectin and BMD of proximal femur is substantiated by all generalized equation models. Before adding the BMI in the model, the increase of 1 mg/dL of adiponectin can accelerate the decrease of proximal femur BMD by 0.001 (SE = 0.0004, p = 0.008). With BMI in the model, the drop rate was 0.0008 (SE = 0.0004, p = 0.026) and remained similar with further adjustment of two bone turnover markers. In this longitudinal analysis with both adiponectin and BMD measured at three time points, we demonstrate that with the increase of adiponectin level, the decline of proximal femur BMD in postmenopausal women accelerated during a period of 96 weeks., (© 2022. The Author(s).)
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- 2022
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12. One-year outcomes of an osteoporosis liaison services program initiated within a healthcare system.
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Chang CB, Yang RS, Chang LY, Peng JK, Tsai KS, Huang WJ, Yang TH, and Chan DC
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- Aged, Aged, 80 and over, Female, Humans, Medication Adherence, Secondary Prevention, Bone Density Conservation Agents therapeutic use, Osteoporosis drug therapy, Osteoporotic Fractures prevention & control, Spinal Fractures
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Due to the huge gap in the care of patients with osteoporosis and fragility fractures, we aimed to explore the effectiveness of the osteoporosis liaison service (OLS) in osteoporosis care. We found that OLS can improve osteoporosis care, including increasing medication compliance, increasing calcium/vitamin D/protein intake, and reducing fall rate., Introduction: A significant gap exists in the care of patients with osteoporosis and fragility fractures. This study aimed to evaluate 1-year outcomes of an osteoporosis liaison service (OLS) program that includes two independent components: medication management services (MMS) to improve medication adherence and fracture liaison services (FLS) for secondary prevention., Methods: Patients with new hip fracture or untreated vertebral fractures enrolled in the FLS program (n = 600), and those with osteoporosis medication management issues but not necessarily fragility fractures enrolled in the MMS program (n = 499) were included. To evaluate outcomes, care coordinators assessed baseline items adapted from the 13 Best Practices Framework (BPF) standards of the International Osteoporosis Foundation, with telephone follow-up every 4 months for 1 year., Results: Mean age of this cohort was 76.2 ± 10.3 years, 78.8% were female. After 1-year participation in the program, all patients had received bone mineral density tests, and medication adherence for the entire cohort at 12 months was 91.9 ± 19.6%, with significant improvement in fall rates (23.4% reduction), exercise rates (16.8% increase), calcium intake (26.5% increase), vitamin D intake (26.4% increase), and adequate protein intake (17.3% increase) (all p < 0.05). After 1-year OLS program, the overall rates of mortality, incident fracture, and falls were 6.6%, 4.0%, and 24.3%, respectively., Conclusions: The OLS program is associated with improved osteoporosis care, including increased medication adherence, calcium/vitamin D and protein intake, and reduced fall rate., (© 2021. International Osteoporosis Foundation and National Osteoporosis Foundation.)
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- 2021
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13. Upgrading Big Brother: Local Strategic Adaptation in China's Security Industry.
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Huang J and Tsai KS
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What are the circumstances under which latecomer firms can develop indigenous innovative capacity and compete globally? China's construction of a vast domestic security apparatus has contributed to it becoming the world's largest supplier and consumer of video surveillance products and services. It has also produced several globally competitive companies, including those engaged in digital surveillance. Although security equipment producers initially emerged in Guangdong province, China's leading technology companies are concentrated in Zhejiang province. This comparative study is motivated by the puzzle of why Guangdong, which has a larger security equipment industry with more local investment and earlier introduction of foreign technology, has lagged behind Zhejiang in technological upgrading. We trace this provincial variation to the policy choices of local state bureaucracies and the business strategies of local enterprises . While macro-level variables such as market demand and establishing national industry standards are important for industrial development, this study demonstrates the critical role of local technocrats and entrepreneurs in facilitating technological innovation in a rapidly evolving surveillance regime. Our analysis also reveals how latecomers to a technology-intensive industry were able to adapt their products strategically to meet the technical demands of a major segment of the domestic market, China's public security sector., (© The Author(s) 2021.)
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- 2021
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14. Consensus Statement on the Use of Bone Turnover Markers for Short-Term Monitoring of Osteoporosis Treatment in the Asia-Pacific Region.
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Wu CH, Chang YF, Chen CH, Lewiecki EM, Wüster C, Reid I, Tsai KS, Matsumoto T, Mercado-Asis LB, Chan DC, Hwang JS, Cheung CL, Saag K, Lee JK, Tu ST, Xia W, Yu W, Chung YS, Ebeling P, Mithal A, Ferrari SL, Cooper C, Lin GT, and Yang RS
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- Biomarkers, Bone Density, Bone Remodeling, Collagen Type I, Consensus, Humans, Peptide Fragments, Procollagen, Hip Fractures, Osteoporosis diagnostic imaging, Osteoporosis drug therapy
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Osteoporosis is a major health issue. By 2050, a greater than 2-fold increase in patients number with hip fractures will occur in Asia representing 50% of all hip fractures worldwide. For the Asia-Pacific (AP) region, more efforts on controlling osteoporosis and the subsequent fractures are crucial. Bone mineral density (BMD) by dual energy X-ray absorptiometry (DXA) is commonly used to diagnose osteoporosis and monitor osteoporosis treatment. However, the inconvenience, cost, limited availability of DXA and the delay in detection of BMD changes after treatment initiation support an important role for bone turnover markers (BTMs), as short-term tools to monitor therapy. With regards to low adherence rates of medical treatment of osteoporosis, the experts reached consensus on the use of BTMs for both raising awareness and short-term monitoring of osteoporosis treatment in the AP region. The experts endorse the use of BTMs, especially serum C-terminal telopeptide of type 1 collagen (CTX) and serum procollagen type 1 N propeptide (P1NP), as short-term monitoring tools to help clinicians assess the responses to osteoporosis therapies and appropriately adjust treatment regimens earlier than BMD. Either the absolute values or the degree of change from baseline in BTMs can be used to monitor the potential efficacy of osteoporosis therapies. The use of BTMs can be incorporated in osteoporosis care programs, such as fracture liaison service (FLS), to improve patient adherence and treatment outcomes. Encouraging sufficient reimbursement from health care systems may facilitate widespread use of BTMs in clinical practice in the AP region., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2021
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15. Pharmacologic intervention for prevention of fractures in osteopenic and osteoporotic postmenopausal women: Systemic review and meta-analysis.
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Wu CH, Hung WC, Chang IL, Tsai TT, Chang YF, McCloskey EV, Watts NB, McClung MR, Huang CF, Chen CH, Wu KL, Tsai KS, Chan DC, Chen JF, Tu ST, Hwang JS, Xia W, Matsumoto T, Chung YS, Cooper C, Kanis JA, Yang RS, and Chan WP
- Abstract
Objectives: Emerging evidence has indicated a role for pharmacologic agents in the primary prevention of osteoporotic fracture, but have not yet been systematically reviewed for meta-analysis. We conducted a meta-analysis to evaluate the efficacy of pharmacologic interventions in reducing fracture risk and increasing bone mineral density (BMD) in postmenopausal women with osteopenia or osteoporosis but without prevalent fragility fracture., Method: The Medline, EMBASE, and CENTRAL databases were searched from inception to September 30, 2019. Only randomized placebo-controlled trials evaluating postmenopausal women with -1.0 > bone mineral density (BMD) T-score > -2.5 (low bone mass) and those with BMD T-score ≤ -2.5 (osteoporosis) but without baseline fractures, who were receiving anti-osteoporotic agents, providing quantitative outcomes data and evaluating risk of vertebral and/or non-vertebral fragility fracture at follow-up. The PRISMA guidelines were followed, applying a random-effects model. The primary endpoint was the effect of anti-osteoporotic regimens in reducing the incidence of vertebral fractures. Secondary endpoints were percentage changes in baseline BMD at the lumbar spine and total hip at 1 and 2 years follow up., Results: Full-text review of 144 articles yielded, 20 for meta-analysis. Bisphosphonates reduced the risk of vertebral fracture (pooled OR = 0.50, 95%CIs = 0.36-0.71) and significantly increased lumbar spine BMD after 1 year, by 4.42% vs placebo (95%CIs = 3.70%-5.14%). At the hip, this value was 2.94% (95%CIs = 2.13%-3.75%). Overall results of limited studies for non-bisphosphonate drugs showed increased BMD and raloxifene significantly decreases the risk of subsequent clinical vertebral fractures., Conclusion: The bisphosphonates are efficacious and most evident for the primary prevention of osteoporotic vertebral fractures, reducing their incidence and improving BMD in postmenopausal women with osteopenia or osteoporosis., Competing Interests: 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., (© 2020 The Author(s).)
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- 2020
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16. Efficacy of Frankincense and Myrrha in Treatment of Acute Interstitial Cystitis/Painful Bladder Syndrome.
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Chen YH, Chen WC, Tsai KS, Liu PL, Tsai MY, Lin TC, Yu SC, and Chen HY
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- Animals, Cell Line, China, Cyclophosphamide pharmacology, Disease Models, Animal, Drug Therapy, Combination, Female, Humans, Pentosan Sulfuric Polyester pharmacology, Rats, Rats, Sprague-Dawley, Cell Movement drug effects, Cell Proliferation drug effects, Cystitis, Interstitial drug therapy, Frankincense pharmacology, Plant Extracts pharmacology, Terpenes pharmacology
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Objective: To investigate the efficacy of frankincense and myrrha in the treatment of acute interstitial cystitis/painful bladder syndrome (IC/PBS)., Methods: The effects of frankincense and myrrha on the proliferation and migration of primary human urothelial cells (HUCs) were assessed in vitro. In the animal study, 48 virgin female rats were randomized into 4 groups (12 in each group): (1) control group (saline-injected control); (2) cyclophosphamide (CYP) group (intraperitoneal injected 150 mg/kg CYP); (3) CYP + pentosan polysulfate sodium group (orally received 50 mg/kg pentosan polysulfate sodium); and (4) CYP + frankincense and myrrha group [orally received frankincense (200 mg/kg) and myrrha (200 mg/kg)]. Rats orally received pentosan polysulfate sodium or frankincense and myrrha on day 1, 2, and 3. The experiments were performed on day 4. Pain and cystometry assessment behavior test were performed. Voiding interval values were assessed in rats under anesthesia. Finally, immunohistochemistry and Western blot were used to confirm the location and level, respectively, of cell junction-associated protein zonula occludens-2 (ZO-2) expression., Results: Low dose frankincense and myrrha increased cell proliferation and migration in HUCs compared with control (P<0.05). Rats with acute IC/PBS rats exhibited lower voiding interval values, pain tolerance, and ZO-2 expression (P<0.05). Voiding interval values and pain tolerance were higher in the frankincense and myrrha group than CYP group (P<0.05). ZO-2 expression in the bladder was increased in the CYP + pentosan polysulfate and frankincense + myrrha groups compared with the CYP-induced acute IC/PBS group (P<0.05)., Conclusion: frankincense and myrrha modulate urothelial wound healing, which ameliorates typical features of acute IC/PBS in rats.
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- 2020
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17. Platelet-Rich Plasma Ameliorates Cyclophosphamide-Induced Acute Interstitial Cystitis/Painful Bladder Syndrome in a Rat Model.
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Chen YH, Man KM, Chen WC, Liu PL, Tsai KS, Tsai MY, Wu YT, and Chen HY
- Abstract
Background: Interstitial cystitis/painful bladder syndrome (IC/PBS) could be treated to ameliorate urothelial injury. Here, we investigated the efficacy of intravesical instillation with platelet-rich plasma (PRP) and hyaluronic acid for acute IC/PBS., Methods: The effects of PRP and hyaluronic acid on the proliferation of normal human fibroblast cells (HFCs) were assessed. Additionally, thirty virgin female rats were randomized into five groups: group 1, saline-injected control; group 2, cyclophosphamide (CYP) plus intravesical instillation with normal saline; group 3, CYP plus intravesical instillation with hyaluronic acid (1 mg/mL); group 4, CYP plus intravesical instillation with PRP; and group 5, CYP plus intravesical instillation with PRP plus hyaluronic acid. A cystometry and histological assessments were performed. The expression of cell junction-associated protein zonula occludens-2 (ZO-2) and inflammatory cytokine interleukin 6 (IL-6) was also measured., Results: Low dose PRP increased proliferation in HFCs. The acute IC/PBS rats showed significantly lower voiding interval values. Voiding interval values were significantly higher in the CYP plus intravesical instillation with PRP group than in the CYP-induced acute IC/PBS group. Additionally, the expression of ZO-2 was increased and IL-6 was decreased in the CYP plus intravesical instillation with PRP group compared with the CYP-induced acute IC/PBS group., Conclusion: These findings suggest that PRP modulate urothelial repair, which ameliorate the increase in urination frequency in rats treated with CYP. Overall, PRP may confer potential benefits by acting as urothelial repair modulators.
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- 2020
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18. Urban-rural disparity of preventive healthcare utilisation among children under the universal health insurance coverage in Taiwan: a national birth cohort analysis.
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Lu CL, Hsu YH, Su WL, Damayanti NA, Chen CW, Lin YJ, Tsai KS, and Li CY
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Cohort Studies, Female, Healthcare Disparities, Humans, Infant, Infant, Newborn, Logistic Models, Male, National Health Programs, Prospective Studies, Socioeconomic Factors, Taiwan, Young Adult, Patient Acceptance of Health Care statistics & numerical data, Preventive Health Services statistics & numerical data, Rural Population statistics & numerical data, Universal Health Insurance statistics & numerical data, Urban Population statistics & numerical data
- Abstract
Objective: In the context of universal health insurance coverage, this study aimed to determine whether urban-rural inequality still exists in preventive health care (PHC) amongst children in Taiwan., Study Design: Prospective cohort study., Methods: A total of 184,117 mothers and their children born in 2009 were identified as the study cohort. The number of children born in urban, satellite and rural areas was 40,176, 57,565 and 86,805, respectively. All children were followed for 7 years, before which a total of seven times PHC were provided by Taiwan's National Health Insurance (NHI) programme. Ordinal logistic regression models were used to associate urbanisation level with the frequency of PHC utilisation. Stratified analyses were further performed in accordance with the children's birth weight and the mothers' birthplace., Results: Children from satellite areas had higher utilisation for the first four scheduled PHC visits. Children living in urban areas received more PHC for the fifth and sixth scheduled visits. Compared with those from rural areas, children in satellite areas exhibited a small but significant increase in odds in PHC utilisation, with a covariate-adjusted odds ratio (aOR) of 1.04 and 95% confidence interval (CI) of 1.02-1.06. By contrast, no significant difference was observed between rural and urban areas (aOR = 1.01). Further stratified analyses suggest more evident urban-rural difference in PHC utilisation amongst children with low birth weight and foreign-born mothers., Conclusions: Given a universal health insurance coverage and embedded mechanisms in increasing the availability of healthcare resources in Taiwan, a slight urban-rural difference is observed in PHC utilisation amongst children. Hence, sociodemographic inequality in utilisation of PHC still exists. This issue should be addressed through policy intervention., (Copyright © 2020 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.)
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- 2020
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19. Iron Overload Associated Endocrine Dysfunction Leading to Lower Bone Mineral Density in Thalassemia Major.
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Yang WP, Chang HH, Li HY, Lai YC, Huang TY, Tsai KS, Lin KH, Lin DT, Jou ST, Lu MY, Yang YL, Chou SW, and Shih SR
- Subjects
- Adult, Bone Diseases, Metabolic etiology, Bone Diseases, Metabolic pathology, Female, Fibroblast Growth Factor-23, Follow-Up Studies, Humans, Male, Prognosis, Retrospective Studies, Taiwan epidemiology, Young Adult, Bone Diseases, Metabolic epidemiology, Endocrine System Diseases complications, Iron Overload complications, beta-Thalassemia physiopathology
- Abstract
Context: Patients with thalassemia major (TM) have a lower bone mineral density (BMD) and higher risk of fracture than the general population. The possible mechanisms include anemia, iron overload, malnutrition, and hormonal deficiency, but these have not been thoroughly investigated., Objective: To identify major mineral and hormonal factors related to BMD in adult TM patients to provide human evidence for the proposed mechanisms., Design: Retrospective study., Setting: Referral center., Patients: Twenty-nine patients with β-TM, aged 23 to 44 years who were followed-up during 2017 to 2018 were enrolled., Outcome Measurements: Endocrine profiles, including thyroid, parathyroid, and pituitary function, glucose, vitamin D, calcium, phosphate, and fibroblast growth factor 23 (FGF23) were obtained. The relationships among the above parameters, body height, fractures, and BMD were analyzed., Results: Abnormal BMD was observed in 42.9% of women and 23.1% of men. The mean final heights of women and men were 3.7 cm and 7.3 cm lower than the mean expected values, respectively. Fracture history was recorded in 26.7% of women and 35.7% of men. BMD was negatively correlated with parathyroid hormone, FGF23, thyrotropin, and glycated hemoglobin (HbA1c) levels, and positively correlated with testosterone, IGF-1, and corticotropin levels (all P < .05). Moreover, hypothyroidism was associated with lower BMD in both the lumbar spine (P = .024) and the femoral neck (P = .004). Patients with hypothyroidism had a higher percentage of abnormal BMD (P = .016)., Conclusion: Hypothyroidism, higher HbA1c, and lower adrenocorticotropin were predictors of abnormal BMD in patients with β-TM. Whether the correction of these factors improves BMD warrants further research., (© Endocrine Society 2020. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2020
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20. Racial difference in bioavailability of oral ibandronate between Caucasian and Taiwanese postmenopausal women.
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Chiu WY, Lin CJ, Yang WS, Tsai KS, and Reginster JY
- Subjects
- Administration, Oral, Aged, Asian People, Biological Availability, Diphosphonates therapeutic use, Female, Humans, Middle Aged, Race Factors, White People, Bone Density Conservation Agents pharmacokinetics, Ibandronic Acid pharmacokinetics, Osteoporosis, Postmenopausal drug therapy, Postmenopause
- Abstract
Following 150 mg of oral ibandronate, Taiwanese females have greater serum and urine levels of this drug and bone resorption marker suppression than Caucasian women. These inter-ethnic differences seems to be partly explained by a 2.48-fold higher bioavailability of ibandronate in Taiwanese postmenopausal women., Introduction: Interethnic differences in the pharmacokinetics of oral ibandronate for osteoporosis are unknown. We compared the disposition of oral ibandronate between Caucasian and Taiwanese postmenopausal women., Methods: Ibandronate 150 mg was administered to 35 Caucasian and 16 Taiwanese postmenopausal women in two separate phase 1 studies. Interethnic comparisons were performed to assess pharmacokinetic properties, including the area under the concentration-time curve (AUC), peak concentration (Cmax), elimination half-life, urinary drug recovery (Ae%), renal clearance (CLr), apparent total clearance (CL/F), and apparent volume of distribution (Vd/F)., Results: The mean AUC, Cmax, and Ae% were 2.41-, 1.69-, and 2.95-fold greater in the Taiwanese than in the Caucasian subjects, and the average CL/F and Vd/F were 2.48- and 2.46-fold smaller. There were no significant differences in mean CLr and half-life between both groups. As bisphosphonates are not biotransformed but are mainly excreted in the urine, the total body clearance is close to the CLr. These results suggested a larger bioavailability in the Taiwanese group which resulted in the differences in the CL/F and Vd/F. Multiple linear regression analysis demonstrated ethnicity influences of the pharmacokinetic properties after adjusting for the other variables., Conclusions: Bioavailability was largely responsible for the interethnic pharmacokinetic differences following oral administration of 150 mg ibandronate and seemed greater in the Taiwanese compared with the Caucasian subjects. Further dose-ranging studies are warranted to determine the optimal dosages of oral ibandronate in patients of Asian or Taiwanese ethnicity.
- Published
- 2020
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21. Picosecond laser treatment for drug-induced melanonychia.
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Tsai KS, Lin TY, Chen HY, Chen WC, and Chen YH
- Subjects
- Breast Neoplasms drug therapy, Breast Neoplasms radiotherapy, Female, Humans, Middle Aged, Nail Diseases chemically induced, Antineoplastic Agents adverse effects, Aromatase Inhibitors adverse effects, Letrozole adverse effects, Nail Diseases therapy
- Published
- 2019
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22. Serum fibroblast growth factor 23 and mineral metabolism in patients with euthyroid Graves' diseases: a case-control study.
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Lin CH, Chang CK, Shih CW, Li HY, Chen KY, Yang WS, Tsai KS, Wang CY, and Shih SR
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- Adult, Aged, Aged, 80 and over, Biomarkers blood, Bone Remodeling, Bone and Bones metabolism, Calcium blood, Case-Control Studies, Female, Fibroblast Growth Factor-23, Humans, Male, Middle Aged, Minerals blood, Parathyroid Hormone blood, Vitamin D analogs & derivatives, Vitamin D blood, Young Adult, Fibroblast Growth Factors blood, Graves Disease blood, Minerals metabolism, Phosphorus blood
- Abstract
This study investigated the alterations of mineral metabolism in patients with Graves' disease (GD) who achieved euthyroidism. They had higher fibroblast growth factor 23 (FGF23) and phosphorus as compared with healthy subjects. Serum FGF23 was negatively correlated with serum phosphorus. These indicated abnormal mineral metabolism even after 1.6 years of euthyroid status., Introduction: FGF23 is involved in the mineral homeostasis, especially the regulation of serum phosphorus. Graves' disease (GD) is associated with accelerated bone turnover, hyperphosphatemia, and elevated serum FGF23. Evidence suggested that serum FGF23 decreased after a 3-month treatment of GD. However, it remains unclear whether serum FGF23, serum phosphorus, and other markers of mineral metabolism will be normalized after euthyroid status achieved., Methods: A total of 62 patients with euthyroid GD and 62 healthy control subjects were enrolled, and the median duration of euthyroid status was 1.6 years. Endocrine profiles including thyroid function test, autoantibodies, serum FGF23, and bone turnover markers were obtained and compared between the two groups., Results: Euthyroid GD patients had significantly higher serum FGF23 and phosphorus, and lower 25-hydroxyvitamin D (25(OH)D) and intact parathyroid hormone (iPTH) levels as compared with the control group. Serum FGF23 was significantly and negatively correlated with phosphorus level after adjusted for age, gender, calcium, iPTH, and 25(OH)D in the euthyroid GD group., Conclusion: Serum phosphorus and FGF23 levels remain higher in GD patients even after euthyroid status has been achieved for a median of 1.6 years. Serum FGF23 was negatively correlated with serum phosphorus in euthyroid GD patients. Underlying mechanisms warrant further investigations., Trial Registration: Registration number: NCT01660308 and NCT02620085.
- Published
- 2019
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23. Risk Factors for Poor Functional Recovery, Mortality, Recurrent Fractures, and Falls Among Patients Participating in a Fracture Liaison Service Program.
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Chao CT, Yang RS, Huang WJ, Tsai KS, and Chan DD
- Subjects
- Aged, Aged, 80 and over, Body Mass Index, Female, Humans, Male, Osteoporotic Fractures epidemiology, Outcome Assessment, Health Care, Prospective Studies, Renal Insufficiency, Chronic, Risk Factors, Self Report, Accidental Falls mortality, Osteoporotic Fractures mortality, Osteoporotic Fractures rehabilitation, Recovery of Function physiology, Recurrence
- Abstract
Objective: A fracture liaison service (FLS) for patients with fractures is a promising approach for improving outcomes, but barriers to the successful implementation of an FLS remain. The factors influencing the outcomes of patients already receiving FLS care are unclear., Design: A prospective multicenter cohort study., Settings and Participants: Patients with incident hip and clinical vertebral fractures treated at 2 institutions between January 2014 and June 2016 were prospectively enrolled. Demographic profiles, comorbidities, prior fracture experiences, T scores, Fracture Risk Assessment Tool (FRAX) scores, and serum markers were examined., Measures: Self-reported functional status (at the 4th month), mortality, recurrent fractures, and falls (at the 2-year follow-up)., Results: Of 712 patients screened for eligibility, 600 (84%) participants (age 78 ± 10 years) were enrolled in the FLS program. At 4 months, 58%, 53%, and 60% of the participants reported improved mobility, self-care, and daily activities after FLS care, respectively. After 2 years, 85 (14%) died, 36 (6%) developed recurrent fractures, and 199 (33%) had 1 or more fall episodes. Multivariate logistic regression showed that neurologic disorders, heart disease, and diabetes were associated with a decreased probability of functional recovery. Cox regression showed that older age and chronic kidney disease (CKD) were predictive of increased mortality, whereas heart disease was correlated with an increased refracture risk. Older age and cancer or osteoarthritis were associated with a higher risk of falls. Importantly, a higher body mass index predicted a lower risk of mortality and a higher probability of improved self-care but a higher risk of fall at follow-up., Conclusions/implications: We discovered that comorbidities including CKD, heart disease, cancer, and osteoarthritis could influence short-term functional changes, survival, and the risk of refractures or falls among patients participating in FLSs. These factors are expected to aid in prognosis estimation and management planning for those with fractures., (Copyright © 2018 AMDA – The Society for Post-Acute and Long-Term Care Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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24. Fracture types affect clinical outcomes of patients managed within the fracture liaison and osteoporosis medication management services.
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Chang CB, Yang RS, Chang LY, Peng JK, Tsai KS, Huang WJ, Yang TH, and Chan DC
- Subjects
- Accidental Falls mortality, Aged, Aging, Body Mass Index, Bone Density drug effects, Female, Humans, Male, Malnutrition pathology, Osteoporosis pathology, Risk, Risk Factors, Bone Density Conservation Agents therapeutic use, Hip Fractures epidemiology, Osteoporosis drug therapy, Osteoporotic Fractures epidemiology, Spinal Fractures epidemiology
- Abstract
Osteoporosis medication in fragility fracture patients is associated with better outcomes. However, limited studies have investigated whether fracture types affect outcomes among patients undergoing treatment. We performed a secondary data analysis on participants from a fracture liaison service and an osteoporosis medication management service. Participants (n = 974) were regrouped into hip fracture (HF), vertebral fracture (VF), HF + VF, and NO HF/VF groups at baseline. Bivariate and multivariate logistic regressions were performed to identify baseline correlates on one-year mortality, incident refractures, and falls. Baseline characteristics were different among fracture groups. The HF group was oldest, with the lowest body mass index (BMI), lowest FRAX® T-score and had the highest 10-year fracture risk. After intervention, the HF group still had the highest mortality, but the HF + VF group had the highest refracture and incident fall rates. In the multivariate regression analysis, prevalent HF and VF, lower BMI and albumin level, and having chronic kidney disease or cancer were associated with higher mortality rates. HF + VF patients had the highest refracture risk. Prevalent HF and VF, older age and higher BMI, and having cancer or osteoarthritis were associated with a greater fall risk. HF and VF are associated with adverse outcomes, even under an optimal fracture care.
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- 2019
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25. Chronic kidney disease predicts a lower probability of improvement in patient-reported experience measures among patients with fractures: a prospective multicenter cohort study.
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Chao CT, Yang RS, Hung LW, Tsai KS, Peng JK, Chang CH, Chiu WY, Lin KP, Wang CT, Wen CJ, and Chan DC
- Subjects
- Activities of Daily Living, Aged, Female, Humans, Male, Middle Aged, Probability, Prospective Studies, Risk Assessment, Risk Factors, Hip Fractures etiology, Patient Reported Outcome Measures, Renal Insufficiency, Chronic complications, Spinal Fractures etiology
- Abstract
Patient-reported experience measures (PREMs) are integral component of care for fracture patients. Using a multicenter cohort, we showed that the presence of chronic kidney disease (CKD) attenuated the probability of PREM improvement in fracture patients., Introduction: Assessing PREM can assist physicians in improving patients' experiences. Patients with CKD are at an increased risk of exhibiting poor PREM and developing fractures. We aimed to assess whether CKD influences the probability of PREM improvement during follow-up among patients with fractures., Methods: We prospectively enrolled patients with hip or vertebral fractures from different institutes into a fracture liaison service program. After registering clinical histories, they received a baseline PREM assessment based on EuroQol group-5 dimension content, including self-care, daily activity, and pain severity using a 5-point Likert scale. A follow-up PREM assessment was arranged 4 months later, and we evaluated whether baseline CKD was predictive of PREM improvement., Results: Among 593 fracture patients (18% with CKD), 37.3% and 62.7% presented with hip and vertebral fractures, respectively. Self-care, daily activity, and pain severity improved after follow-up in 32%, 27%, and 43% participants; those with CKD exhibited worse self-care ability and daily activity than those without. Multivariate logistic regression analyses showed that baseline CKD was significantly associated with lower possibility of improvement in daily activity (odds ratio [OR] 0.58, p = 0.049) and pain severity (OR 0.52, p = 0.01), and an insignificant change in the possibility of improvement in self-care ability (OR 0.61, p = 0.09)., Conclusions: The presence of CKD predicts a significantly lower probability of PREM improvement among fracture patients. An early emphasis on renal function during fracture care should be considered.
- Published
- 2018
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26. Traditional Chinese medicine decreases the obstructive uropathy risk in uterovaginal prolapse: A nationwide population-based study.
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Chang YJ, Chen WC, Chiang JH, Su YC, Tsai KS, Man KM, Tsai MY, Chen YH, and Chen HY
- Subjects
- Adult, Databases, Factual, Female, Humans, Hydronephrosis epidemiology, Incidence, Kaplan-Meier Estimate, Middle Aged, Proportional Hazards Models, Retrospective Studies, Taiwan epidemiology, Urinary Retention epidemiology, Uterine Prolapse complications, Hydronephrosis etiology, Medicine, Chinese Traditional methods, Urinary Retention etiology, Uterine Prolapse therapy
- Abstract
Traditional Chinese medicine (TCM) is a popular treatment for voiding dysfunction in Eastern countries. However, no previous studies have investigated the effects of TCM on preventing obstructive uropathy in uterovaginal prolapse women. We conducted a large-scale nationwide population-based cohort study to investigate the relationship between TCM and obstructive uropathy in uterovaginal prolapse women. This is a retrospective cohort study with the Taiwan National Health Insurance Research Database (NHIRD). The study population was newly diagnosed uterovaginal prolapse patients between 1997 and 2010 year. Among patients, 762 uterovaginal prolapse patients in this cohort. Significant adjusted HRs of urine retention or hydronephrosis in Cox proportional hazard models were uterovaginal prolapse (hazard ratio [HR]: 1.74, 95% confidence intervals [CI]: 1.43-2.14), age 40 to 64 years (1.51, 1.01-2.27), ≥60 years (3.52, 2.32-5.34), DM (1.52, 1.23-1.89), hypertension (1.38, 1.13-1.7), constipation (1.35, 1.05-1.75), urinary tract calculi (1.54, 1.06-2.23), and TCM users (0.34, 0.28-0.41). The Kaplan-Meier analysis showed a higher incidence rate of urine retention or hydronephrosis in the uterovaginal prolapse cohort compared with that of the without uterovaginal prolapse cohort. The results of this nationwide population-based study support a relationship between TCM and a reduced risk of obstructive uropathy in uterovaginal prolapse women.
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- 2018
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27. Correction to: Consensus on best practice standards for Fracture Liaison Service in the Asia-Pacific region.
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Chan DD, Chang LY, Akesson KE, Mitchell P, Chen CH, Lewiecki EM, Lee JK, Lau TC, Songpatanasilp T, Lee KB, Kim KJ, Chen JF, Huang KE, Gau YL, Chang YF, Ebeling P, Xia W, Yu W, Suzuki A, Hew FL, Mercado-Asis LB, Chung YS, Tsai KS, Lin GT, Yang RS, and Wu CH
- Abstract
In this article the name of the sixth author, E. Michael Lewiecki was rendered incorrectly. The publisher regrets this error and apologizes for the inconvenience caused.
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- 2018
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28. Effects of exercise improves muscle strength and fat mass in patients with high fracture risk: A randomized control trial.
- Author
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Chan DC, Chang CB, Han DS, Hong CH, Hwang JS, Tsai KS, and Yang RS
- Subjects
- Accidental Falls prevention & control, Aged, Aged, 80 and over, Bone Density physiology, Female, Hip Fractures epidemiology, Humans, Male, Middle Aged, Organ Size, Osteoporosis prevention & control, Osteoporotic Fractures epidemiology, Risk Assessment, Taiwan, Adiposity, Muscle Strength, Resistance Training, Sarcopenia rehabilitation
- Abstract
Background: The deterioration of the musculoskeletal system imposes significant impact on physical activity. Exercise is an important strategy which minimizes these changes. It is not clear which type of exercise provides better improvement on low physical performance, low muscle mass and low strength of sarcopenia. We aim to develop an integrated care (IC) model and compare its relative efficacy in limb fat free mass, muscle strength, and physical performance with low extremities exercise (LEE) in community dwelling older adults with high risk of fractures (Fracture Risk Assessment Tool (FRAX
® )) ≧3% for hip fracture, ≧20% for major osteoporotic fracture or 1-min osteoporosis risk test (≧1 point) or fall (≧2 falls in previous year)., Methods: Patients were assigned randomized to participate in either IC or LEE group (n = 55 each) for 3 months. All participants received education including home-based exercise. The IC group consisted of different modalities of exercise while the LEE group performed machine-based low extremities exercise. Fat free mass, muscle strength, and physical performance were measured at their baseline and 3-months follow-up., Results: Mean age was 73.8 ± 7 years with 69.1% women. Entire cohort demonstrated significant increment in fat free mass, muscle strength (4 indicators) and physical performance (3 indicators). However, between group differences were not significant., Conclusion: With regular supervise exercise; both groups are equally effective in decreasing fat mass and increasing physical performance, muscle mass and strength. However, the IC group required fewer resources and thus more financially feasible in a community setting., (Copyright © 2017. Published by Elsevier B.V.)- Published
- 2018
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29. The development of Taiwan Fracture Liaison Service network.
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Chang LY, Tsai KS, Peng JK, Chen CH, Lin GT, Lin CH, Tu ST, Mao IC, Gau YL, Liu HC, Niu CC, Hsieh MH, Chien JT, Hung WC, Yang RS, Wu CH, and Chan DC
- Abstract
Osteoporosis and its associated fragility fractures are becoming a severe burden in the healthcare system globally. In the Asian-Pacific (AP) region, the rapidly increasing in aging population is the main reason accounting for the burden. Moreover, the paucity of quality care for osteoporosis continues to be an ongoing challenge. The Fracture Liaison Service (FLS) is a program promoted by International Osteoporosis Foundation (IOF) with a goal to improve quality of postfracture care and prevention of secondary fractures. In this review article, we would like to introduce the Taiwan FLS network. The first 2 programs were initiated in 2014 at the National Taiwan University Hospital and its affiliated Bei-Hu branch. Since then, the Taiwan FLS program has continued to grow exponentially. Through FLS workshops promoted by the Taiwanese Osteoporosis Association (TOA), program mentors have been able to share their valuable knowledge and clinical experience in order to promote establishments of additional programs. With 22 FLS sites including 11 successfully accredited on the best practice map, Taiwan remains as one of the highest FLS coverage countries in the AP region, and was also granted the IOF Best Secondary Fracture Prevention Promotion award in 2017. Despite challenges faced by the TOA, we strive to promote more FLS sites in Taiwan with a main goal of ameliorating further health burden in managing osteoporotic patients.
- Published
- 2018
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30. Fracture liaison services improve outcomes of patients with osteoporosis-related fractures: A systematic literature review and meta-analysis.
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Wu CH, Tu ST, Chang YF, Chan DC, Chien JT, Lin CH, Singh S, Dasari M, Chen JF, and Tsai KS
- Subjects
- Aged, Aged, 80 and over, Bone Density, Humans, Middle Aged, Observational Studies as Topic, Osteoporotic Fractures mortality, Randomized Controlled Trials as Topic, Treatment Outcome, Osteoporotic Fractures prevention & control, Osteoporotic Fractures therapy, Secondary Prevention
- Abstract
Objectives: This systematic review and meta-analysis evaluated the outcomes of patients with osteoporosis-related fractures managed through fracture liaison services (FLS) programs., Methods: Medline, PubMed, EMBASE, and the Cochrane Library were searched (January 2000-February 2017 inclusive) using the keywords 'osteoporosis', 'fractures', 'liaison', and 'service' to identify randomised controlled trials and observational studies of patients aged ≥50years with osteoporosis-related fractures in hospital, clinic, community, or home-based settings who were managed using FLS. Risk of bias was assessed at outcome level. Meta-analysis followed a random-effects and fixed-effects model. Outcomes of interest were incidence of bone mineral density (BMD) testing, treatment initiation, adherence, re-fractures, and mortality due to osteoporosis treatment., Results: A total of 159 publications were identified for the systematic literature review; 74 controlled studies (16 RCTs; 58 observational studies) were included in the meta-analysis. Overall, 41 of 58 observational studies and 12 of 16 RCTs were considered of high quality. Compared with patients receiving usual care (or those in the control arm), patients receiving care from an FLS program had higher rates of BMD testing (48.0% vs 23.5%) and treatment initiation (38.0% vs 17.2%) and greater adherence (57.0% vs 34.1%). Unweighted average rates of re-fracture were 13.4% among patients in the control arm and 6.4% in the FLS arm. Unweighted average rates of mortality were 15.8% in the control arm and 10.4% in the FLS arm. Meta-analysis revealed significant FLS-associated improvements in all outcomes versus non-FLS controls, with BMD testing increased by 24 percentage points (95% confidence interval [CI] 0.18-0.29), 20 percentage points for treatment rates (95% CI 0.16-0.25), and 22 percentage points for adherence (95% CI 0.13-0.31) and absolute risk of re-fracture reduced by five percentage points (95% CI -0.08 to -0.03) and mortality reduced by three percentage points (95% CI -0.05 to -0.01)., Conclusion: FLS programs improved outcomes of osteoporosis-related fractures, with significant increases in BMD testing, treatment initiation, and adherence to treatment and reductions in re-fracture incidence and mortality., (Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2018
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31. Consensus on best practice standards for Fracture Liaison Service in the Asia-Pacific region.
- Author
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Chan DD, Chang LY, Akesson KE, Mitchell P, Chen CH, Lewiecki EM, Lee JK, Lau TC, Songpatanasilp T, Lee KB, Kim KJ, Chen JF, Huang KE, Gau YL, Chang YF, Ebeling P, Xia W, Yu W, Suzuki A, Hew FL, Mercado-Asis LB, Chung YS, Tsai KS, Lin GT, Yang RS, and Wu CH
- Subjects
- Asia epidemiology, Australasia epidemiology, Congresses as Topic, Humans, Osteoporotic Fractures epidemiology, Consensus, Delivery of Health Care standards, Osteoporotic Fractures prevention & control, Secondary Prevention standards, Societies, Medical
- Abstract
The Fracture Liaison Service (FLS) Consensus Meeting endorsed by the International Osteoporosis Foundation (IOF), Asian Federation of Osteoporosis Societies (AFOS), and Asia Pacific Osteoporosis Foundation (APOF) was hosted by the Taiwanese Osteoporosis Association on October 14, 2017. International and domestic experts reviewed the 13 Best Practice Framework (BPF) standards and concluded that all standards were generally applicable in the Asia-Pacific region and needed only minor modifications to fit the healthcare settings in the region., Purpose: To review and generate consensus on best practices of fracture liaison service (FLS) in the Asia-Pacific (AP) region., Methods: In October 2017, the Taiwanese Osteoporosis Association (TOA) invited experts from the AP region (n = 23), the Capture the Fracture Steering Committee (n = 2), and the USA (n = 1) to join the AP region FLS Consensus Meeting in Taipei. After two rounds of consensus generation, the recommendations on the 13 Best Practice Framework (BPF) standards were reported and reviewed by the attendees. Experts unable to attend the on-site meeting reviewed the draft, made suggestions, and approved the final version., Results: Because the number of FLSs in the region is rapidly increasing, experts agreed that it was timely to establish consensus on benchmark quality standards for FLSs in the region. They also agreed that the 13 BPF standards and the 3 levels of standards were generally applicable, but that some clarifications were necessary. They suggested, for example, that patient and family education be incorporated into the current standards and that communication with the public to promote FLSs be increased., Conclusions: The consensus on the 13 BPF standards reviewed in this meeting was that they were generally applicable and required only a few advanced clarifications to increase the quality of FLSs in the region.
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- 2018
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32. The influence of alendronate and tooth extraction on the incidence of osteonecrosis of the jaw among osteoporotic subjects.
- Author
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Chiu WY, Yang WS, Chien JY, Lee JJ, and Tsai KS
- Subjects
- Aged, Alendronate therapeutic use, Bisphosphonate-Associated Osteonecrosis of the Jaw etiology, Bone Density Conservation Agents adverse effects, Female, Humans, Logistic Models, Male, Middle Aged, Odds Ratio, Osteoporosis pathology, Prevalence, Raloxifene Hydrochloride therapeutic use, Retrospective Studies, Alendronate adverse effects, Bisphosphonate-Associated Osteonecrosis of the Jaw epidemiology, Bone Density Conservation Agents therapeutic use, Osteoporosis drug therapy, Tooth Extraction adverse effects
- Abstract
Background: Although bisphosphonate-related osteonecrosis of the jaw (ONJ) develops mainly after tooth extractions (TEs), the strength of the association between them and how the existence of the disease among bisphosphonate (BP)-treated osteoporotic patients exposed to TE remain uncertain., Methods: A nationwide retrospective cohort study investigated the influence of alendronate and TE on the development of ONJ., Results: Incidence of ONJ following long-term alendronate therapy was 262/100,000 person-years, while no event developed in the control group on raloxifene. Overall prevalence of ONJ in osteoporotic subjects receiving alendronate was estimated at 0.34% which rose to 2.16% after TE. Multiple logistic regression analysis, adjusted for the potential confounders, showed TE (adjusted odds ratio, 9.60 [4.33-21.29]), drug duration exceeding 3 years (3.00 [1.33-6.76]), and concomitant rheumatoid arthritis (4.94 [1.64-14.90]) were independent predictors of ONJ., Conclusions: This article strengthens the relationship between ONJ and BPs. Among osteoporotic patients exposed to alendronate, TE confers a 9.6-fold increased risk for ONJ and it should be performed with caution irrespective of drug duration.
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- 2018
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33. Comparative studies on the hypolipidemic, antioxidant and hepatoprotective activities of catechin-enriched green and oolong tea in a double-blind clinical trial.
- Author
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Venkatakrishnan K, Chiu HF, Cheng JC, Chang YH, Lu YY, Han YC, Shen YC, Tsai KS, and Wang CK
- Subjects
- Adult, Camellia sinensis chemistry, Cholesterol, LDL metabolism, Double-Blind Method, Female, Humans, Liver metabolism, Male, Middle Aged, Tea chemistry, Triglycerides metabolism, Antioxidants administration & dosage, Catechin administration & dosage, Hypolipidemic Agents administration & dosage, Liver drug effects, Plant Extracts administration & dosage, Protective Agents administration & dosage
- Abstract
This study aimed to compare the beneficial effect of catechin-enriched green tea and oolong tea on mildly hypercholesterolemic subjects. Sixty mildly hypercholesterolemic subjects (180-220 mg dL
-1 ) were enrolled and divided into three groups as catechin-enriched green tea (CEGT), catechin-enriched oolong tea (CEOT) or placebo. The subjects were instructed to drink 2 × 300 mL of CEGT (780.6 mg of catechin), CEOT (640.4 mg of catechin) or placebo beverage for 12 weeks. Drinking CEGT and CEOT significantly decreased (p < 0.05) the body weight, fat, and BMI, lipid peroxidation as well as lipid profile (TC, LDL-c, HDL-c, and TG). Also, intervention with CEGT and CEOT significantly improved (p < 0.05) the oxidative indices (TEAC and GSH) and antioxidant enzymes (SOD, CAT, GPx, and GR). Moreover, ultrasound examination endorsed the hepatoprotective activity of CEGT and CEOT by reverting mild fatty liver to the normal hepatic condition because of antioxidant and hypolipidemic activities. To summarize, both CEGT and CEOT showed similar antioxidant and hepatoprotective activities. However, CEOT displayed superior lipid-lowering activity compared to CEGT or placebo, and hence it could be used to amend the wellness condition of mildly hypercholesterolemic subjects.- Published
- 2018
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34. Predicting the risk of osteopenia for women aged 40-55 years.
- Author
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Chen JH, Chen YC, Tsai MK, Chiou JM, Lee WC, Tsao CK, Tsai KS, and Chie WC
- Subjects
- Adult, Cross-Sectional Studies, Female, Humans, Logistic Models, Middle Aged, Multivariate Analysis, ROC Curve, Risk Factors, Self-Assessment, Taiwan, Bone Density, Bone Diseases, Metabolic diagnosis, Bone Diseases, Metabolic epidemiology
- Abstract
Background/purpose: Osteoporosis has been linked to an increased fracture risk and subsequent mortality in the later life. Previous prediction models have focused on osteoporosis in postmenopausal women; however, a prediction tool for osteopenia is needed. Our objective was to establish a prediction model for osteopenia risk in women aged 40-55 years., Methods: This was a cross-sectional study. A total of 1350 Taiwanese women aged 40-55 years were recruited from a health checkup center from 2009 to 2010. The main outcome measure was osteopenia (-1≥bone mineral density T-score > -2.5)., Results: The Osteoporosis Preclinical Assessment Tool (OPAT) developed in this study was based on variables with biological importance to osteopenia and variables that remained significant (p<0.05) in the multivariable analysis, which include age, menopausal status, weight, and alkaline phosphatase level. The OPAT has a total score that ranges from 0 to 7, and categorizes women into high-, moderate-, and low-risk groups. The predictive ability of the OPAT (area under the receiver operating characteristic curve=0.77) was significantly better than that of the Osteoporosis Self-assessment Tool for Asians (area under the receiver operating characteristic curve=0.69). The inclusion of serum total alkaline phosphatase level in the model, which is easy to obtain from routine health checkups, significantly enhanced the sensitivity (McNemar test, p=0.004) for detecting osteopenia in women aged 40-55 years., Conclusion: Our findings provide an important tool for identifying women at risk of osteoporosis at the preclinical phase., (Copyright © 2017. Published by Elsevier B.V.)
- Published
- 2017
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35. Establishing and evaluating FRAX ® probability thresholds in Taiwan.
- Author
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Chan DC, McCloskey EV, Chang CB, Lin KP, Lim LC, Tsai KS, and Yang RS
- Subjects
- Age Distribution, Aged, Aged, 80 and over, Alendronate economics, Algorithms, Bone Density Conservation Agents economics, Cost-Benefit Analysis, Female, Hip Fractures prevention & control, Humans, Insurance, Health, Reimbursement, Male, Middle Aged, Osteoporotic Fractures prevention & control, Risk Assessment, Risk Factors, Sex Distribution, Taiwan epidemiology, Alendronate therapeutic use, Bone Density Conservation Agents therapeutic use, Hip Fractures epidemiology, Osteoporosis drug therapy, Osteoporosis epidemiology, Osteoporotic Fractures epidemiology
- Abstract
Background/purpose: The Taiwanese FRAX
® calculator was launched in 2010. However, cost-effectiveness thresholds for the prescription of antiosteoporosis medications were not established. This study aims to establish and evaluate FRAX® -based probability thresholds in Taiwan., Methods: Using previous data from Taiwan and literature, we determined cost-effectiveness thresholds for prevention of osteoporotic fractures by alendronate with a Markov model, as well as using two other translational approaches. Sensitivity analysis was applied using different alendronate prices. A clinical sample was used to test these Taiwan-specific thresholds by determining the percentages of high-risk patients who would be qualified for current National Health Insurance reimbursement., Results: With the Markov model, the intervention threshold for hip fracture was 7% for women and 6% for men; for major osteoporotic fracture, it was 15% for women and 12.5% for men. Both translational approach models were cost effective only for certain age groups. However, if branded alendronate was reimbursed at 60% of the current price, they became cost effective in almost all age groups. This clinical screening study showed that the National Health Insurance Administration model identified the highest proportion (44%) of patients qualified for National Health Insurance reimbursements, followed by the Markov model (30%), and the United States model (22%)., Conclusion: Three FRAX® -based models of alendronate use were established in Taiwan to help optimize treatment strategies. The government is encouraged to incorporate FRAX® -based approaches into the reimbursement policy for antiosteoporosis medicines., (Copyright © 2016. Published by Elsevier B.V.)- Published
- 2017
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36. Long-Term Therapy With Wu-Ling-San, a Popular Antilithic Chinese Herbal Formula, Did Not Prevent Subsequent Stone Surgery: A Nationwide Population-Based Cohort Study.
- Author
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Wu SY, Chen HY, Tsai KS, Chiang JH, Muo CH, Sung FC, Chen YH, and Chen WC
- Subjects
- Adult, Cohort Studies, Databases, Factual, Female, Humans, Long-Term Care, Male, Middle Aged, Taiwan, Young Adult, Medicine, Chinese Traditional, Urinary Calculi prevention & control, Urinary Calculi surgery
- Abstract
Traditional Chinese herbal medicine (CHM), which is widely used to treat pain and urolithiasis, is a promising therapy for urinary stone prevention. This study investigated the clinical efficacy of a popular CHM, Wu-Ling-San (WLS), in Taiwan for the prophylaxis of recurrent nephrolithiasis as assessed by surgical stone treatment via a nationwide population-based cohort study. The National Health Insurance Research Database, 2000-2010, which included one million patient records. All patients diagnosed with stone disease at the beginning of the study. The matched controls (4-fold the number of WLS patients) were stone patients who did not take WLS. Data analysis included the stone surgeries following the first treatment. We enrolled 11 900 patients with stone disease, and the incidence of stone patients in this database was 1.19%. The prevalence of comorbidities such as benign prostate hyperplasia, chronic kidney disease, diabetes mellitus, and urinary tract infection, but not hypertension, was significantly higher in WLS users. Several patients in both groups were prescribed potassium citrate. The stone treatment rate was significantly higher in WLS users (17.85%) than in the non-WLS users (14.47%). WLS users with an associated comorbidity had a higher treatment rate than the non-WLS users: 21.05% versus 16.70%, respectively. The surgery rate for upper urinary tract stones was higher in WLS users than in the non-WLS users (adjusted hazard ratio, 1.28; 95% confidence interval, 1.08-1.52; P < .05). The stone treatment rate (52.79%) was significantly higher in patients who used a very high amount of WLS (adjusted hazard ratio, 3.02; 95% confidence interval, 2.30-3.98). Stone patients using a high amount of WLS use had a high stone surgical rate. Long-term therapy with WLS did not have a preventive effect on stone surgical treatment. Long-term potassium citrate therapy as a preventive measure appeared to be underutilized in this study., (© The Author(s) 2016.)
- Published
- 2016
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37. Characterization of FN1-FGFR1 and novel FN1-FGF1 fusion genes in a large series of phosphaturic mesenchymal tumors.
- Author
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Lee JC, Su SY, Changou CA, Yang RS, Tsai KS, Collins MT, Orwoll ES, Lin CY, Chen SH, Shih SR, Lee CH, Oda Y, Billings SD, Li CF, Nielsen GP, Konishi E, Petersson F, Carpenter TO, Sittampalam K, Huang HY, and Folpe AL
- Subjects
- Fibroblast Growth Factor-23, Fibroblast Growth Factors metabolism, Humans, Oncogene Proteins, Fusion genetics, Bone Neoplasms genetics, Fibroblast Growth Factor 1 genetics, Fibronectins genetics, Receptor, Fibroblast Growth Factor, Type 1 genetics, Soft Tissue Neoplasms genetics
- Abstract
Phosphaturic mesenchymal tumors typically cause paraneoplastic osteomalacia, chiefly as a result of FGF23 secretion. In a prior study, we identified FN1-FGFR1 fusion in 9 of 15 phosphaturic mesenchymal tumors. In this study, a total of 66 phosphaturic mesenchymal tumors and 7 tumors resembling phosphaturic mesenchymal tumor but without known phosphaturia were studied. A novel FN1-FGF1 fusion gene was identified in two cases without FN1-FGFR1 fusion by RNA sequencing and cross-validated with direct sequencing and western blot. Fluorescence in situ hybridization analyses revealed FN1-FGFR1 fusion in 16 of 39 (41%) phosphaturic mesenchymal tumors and identified an additional case with FN1-FGF1 fusion. The two fusion genes were mutually exclusive. Combined with previous data, the overall prevalence of FN1-FGFR1 and FN1-FGF1 fusions was 42% (21/50) and 6% (3/50), respectively. FGFR1 immunohistochemistry was positive in 82% (45/55) of phosphaturic mesenchymal tumors regardless of fusion status. By contrast, 121 cases of potential morphologic mimics (belonging to 13 tumor types) rarely expressed FGFR1, the main exceptions being solitary fibrous tumors (positive in 40%), chondroblastomas (40%), and giant cell tumors of bone (38%), suggesting a possible role for FGFR1 immunohistochemistry in the diagnosis of phosphaturic mesenchymal tumor. With the exception of one case reported in our prior study, none of the remaining tumors resembling phosphaturic mesenchymal tumor had either fusion type or expressed significant FGFR1. Our findings provide insight into possible mechanisms underlying the pathogenesis of phosphaturic mesenchymal tumor and imply a central role of the FGF1-FGFR1 signaling pathway. The novel FN1-FGF1 protein is expected to be secreted and serves as a ligand that binds and activates FGFR1 to achieve an autocrine loop. Further study is required to determine the functions of these fusion proteins.
- Published
- 2016
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38. Encouraging appropriate osteoporosis medication to prevent fracture.
- Author
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Tsai KS
- Published
- 2016
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39. Advanced glycation end-products induced VEGF production and inflammatory responses in human synoviocytes via RAGE-NF-κB pathway activation.
- Author
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Chen YJ, Chan DC, Chiang CK, Wang CC, Yang TH, Lan KC, Chao SC, Tsai KS, Yang RS, and Liu SH
- Subjects
- Cells, Cultured, Cyclooxygenase 2 metabolism, Dinoprostone metabolism, Glycation End Products, Advanced, Humans, I-kappa B Proteins metabolism, Interleukin-6 metabolism, Matrix Metalloproteinase 13 metabolism, NF-kappa B metabolism, Signal Transduction, Inflammation metabolism, Receptor for Advanced Glycation End Products metabolism, Synoviocytes metabolism, Vascular Endothelial Growth Factor A metabolism
- Abstract
Aging and diabetes are known to be the major cause to affect the progression of osteoarthritis (OA). Advanced glycation end products (AGEs) have been observed to accumulate in various organs especially in joint tissue and do damage to the joint tissue during aging and diabetes. Synovial angiogenesis and inflammation are observed across the full range of OA severity. The signaling pathway of AGEs on vascular endothelial growth factor (VEGF) production and inflammatory responses in synoviocytes are still unclear. Here, we investigated the role of receptor for AGEs (RAGE) and the signaling pathway involved in AGEs-induced VEGF production and inflammatory responses in human synoviocytes. Human synoviocytes were cultured and treated with AGEs (25-100 µg/ml). AGEs significantly induced the protein expressions of cyclooxygenase-2 (COX-2) and VEGF and the productions of prostaglandin-E2 (PGE2), VEGF, interleukin-6 (IL-6), and metalloproteinase-13 (MMP-13) in human synoviocytes in a dose-dependent manner. Moreover, AGEs markedly activated the phosphorylations of IκB kinase (IKK)α/β, IκBα, and nuclear factor (NF)-κB-p65 proteins in human synoviocytes in a time-dependent manner. Treatment with neutralizing antibody for RAGE statistically significantly decreased the AGEs-induced increase in COX-2, VEGF, PGE2, IL-6, and MMP13 and AGEs-activated NF-κB pathway activation. Taken together, these findings indicate that AGEs are capable of inducing VEGF production and inflammatory responses via RAGE-NF-κB pathway activation in human synoviocytes. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:791-800, 2016., (© 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.)
- Published
- 2016
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40. Advanced glycation end-products induce skeletal muscle atrophy and dysfunction in diabetic mice via a RAGE-mediated, AMPK-down-regulated, Akt pathway.
- Author
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Chiu CY, Yang RS, Sheu ML, Chan DC, Yang TH, Tsai KS, Chiang CK, and Liu SH
- Subjects
- Aged, Animals, Atrophy etiology, Atrophy pathology, Case-Control Studies, Diabetes Mellitus, Experimental etiology, Down-Regulation, Humans, MAP Kinase Signaling System physiology, Male, Mice, Muscle Fatigue physiology, Muscle Fibers, Skeletal pathology, Muscle Proteins metabolism, Muscle Weakness etiology, Muscle Weakness pathology, Muscle, Skeletal physiology, Muscular Diseases pathology, Receptor for Advanced Glycation End Products physiology, Regeneration physiology, SKP Cullin F-Box Protein Ligases metabolism, Signal Transduction physiology, Thiazoles pharmacology, AMP-Activated Protein Kinases metabolism, Diabetes Mellitus etiology, Glycation End Products, Advanced metabolism, Muscle, Skeletal pathology, Muscular Diseases etiology
- Abstract
Diabetic myopathy, a less studied complication of diabetes, exhibits the clinical observations characterized by a less muscle mass, muscle weakness and a reduced physical functional capacity. Accumulation of advanced glycation end-products (AGEs), known to play a role in diabetic complications, has been identified in ageing human skeletal muscles. However, the role of AGEs in diabetic myopathy remains unclear. Here, we investigated the effects of AGEs on myogenic differentiation and muscle atrophy in vivo and in vitro. We also evaluated the therapeutic potential of alagebrium chloride (Ala-Cl), an inhibitor of AGEs. Muscle fibre atrophy and immunoreactivity for AGEs, Atrogin-1 (a muscle atrophy marker) and phosphorylated AMP-activated protein kinase (AMPK) expressions were markedly increased in human skeletal muscles from patients with diabetes as compared with control subjects. Moreover, in diabetic mice we found increased blood AGEs, less muscle mass, lower muscular endurance, atrophic muscle size and poor regenerative capacity, and increased levels of muscle AGE and receptor for AGE (RAGE), Atrogin-1 and phosphorylated AMPK, which could be significantly ameliorated by Ala-Cl. Furthermore, in vitro, AGEs (in a dose-dependent manner) reduced myotube diameters (myotube atrophy) and induced Atrogin-1 protein expression in myotubes differentiated from both mouse myoblasts and primary human skeletal muscle-derived progenitor cells. AGEs exerted a negative regulation of myogenesis of mouse and human myoblasts. Ala-Cl significantly inhibited the effects of AGEs on myotube atrophy and myogenesis. We further demonstrated that AGEs induced muscle atrophy/myogenesis impairment via a RAGE-mediated AMPK-down-regulation of the Akt signalling pathway. Our findings support that AGEs play an important role in diabetic myopathy, and that an inhibitor of AGEs may offer a therapeutic strategy for managing the dysfunction of muscle due to diabetes or ageing., (Copyright © 2015 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.)
- Published
- 2016
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41. Skeletal muscle mass adjusted by height correlated better with muscular functions than that adjusted by body weight in defining sarcopenia.
- Author
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Han DS, Chang KV, Li CM, Lin YH, Kao TW, Tsai KS, Wang TG, and Yang WS
- Subjects
- Adipose Tissue, Adult, Aged, Aged, 80 and over, Body Composition, Case-Control Studies, Female, Geriatric Assessment, Healthy Volunteers, Humans, Male, Organ Size, Physical Fitness, Prevalence, Sarcopenia epidemiology, Young Adult, Body Weight, Muscle, Skeletal pathology, Muscle, Skeletal physiopathology, Sarcopenia pathology, Sarcopenia physiopathology
- Abstract
Sarcopenia, characterized by low muscle mass and function, results in frailty, comorbidities and mortality. However, its prevalence varies according to the different criteria used in its diagnosis. This cross-sectional study investigated the difference in the number of sarcopenia cases recorded by two different measurement methods of low muscle mass to determine which measurement was better. We recruited 878 (54.2% female) individuals aged over 65 years and obtained their body composition and functional parameters. Low muscle mass was defined as two standard deviations below either the mean height-adjusted (hSMI) or weight-adjusted (wSMI) muscle mass of a young reference group. The prevalence of sarcopenia was 6.7% vs. 0.4% (male/female) by hSMI, and 4.0% vs. 10.7% (male/female) by wSMI. The κ coefficients for these two criteria were 0.39 vs. 0.03 (male/female), and 0.17 in all subjects. Serum myostatin levels correlated positively with gait speed (r = 0.142, p = 0.007) after adjustment for gender. hSMI correlated with grip strength, cardiopulmonary endurance, leg endurance, gait speed, and flexibility. wSMI correlated with grip strength, leg endurance, gait speed, and flexibility. Since hSMI correlated more closely with grip strength and more muscular functions, we recommend hSMI in the diagnosis of low muscle mass.
- Published
- 2016
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42. Groundwater Molybdenum from Emerging Industries in Taiwan.
- Author
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Tsai KS, Chang YM, Kao JC, and Lin KL
- Subjects
- Adult, Child, Drinking Water standards, Humans, Industrial Waste, Risk Assessment, Taiwan, Wastewater, Groundwater chemistry, Molybdenum analysis, Water Pollutants, Chemical analysis
- Abstract
This study determined the influence of emerging industries development on molybdenum (Mo) groundwater contamination. A total of 537 groundwater samples were collected for Mo determination, including 295 samples from potentially contaminated areas of 3 industrial parks in Taiwan and 242 samples from non-potentially contaminated areas during 2008-2014. Most of the high Mo samples are located downstream from a thin film transistor-liquid crystal display (TFT-LCD) panel factory. Mean groundwater Mo concentrations from potentially contaminated areas (0.0058 mg/L) were significantly higher (p < 0.05) than those from non-potentially contaminated areas (0.0022 mg/L). The highest Mo wastewater concentrations in the effluent from the optoelectronics industry and following wastewater batch treatment were 0.788 and 0.0326 mg/L, respectively. This indicates that wastewater containing Mo is a possible source of both groundwater and surface water contamination. Nine samples of groundwater exceed the World Health Organization's suggested drinking water guideline of 0.07 mg/L. A non-carcinogenic risk assessment for Mo in adults and children using the Mo concentration of 0.07 mg/L yielded risks of 0.546 and 0.215, respectively. These results indicate the importance of the development of a national drinking water quality standard for Mo in Taiwan to ensure safe groundwater for use. According to the human health risk calculation, the groundwater Mo standard is suggested as 0.07 mg/L. Reduction the discharge of Mo-contaminated wastewater from factories in the industrial parks is also the important task in the future.
- Published
- 2016
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43. CCAAT-Enhancer-Binding Protein Homologous Protein Deficiency Attenuates Oxidative Stress and Renal Ischemia-Reperfusion Injury.
- Author
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Chen BL, Sheu ML, Tsai KS, Lan KC, Guan SS, Wu CT, Chen LP, Hung KY, Huang JW, Chiang CK, and Liu SH
- Subjects
- Aldehydes metabolism, Animals, Antioxidants metabolism, Apoptosis, Cell Hypoxia, Cell Line, Gene Knockdown Techniques, Glutathione metabolism, Ischemia metabolism, Kidney immunology, Kidney pathology, Lipid Peroxidation, Mice, 129 Strain, Mice, Inbred C57BL, Mice, Knockout, RNA, Small Interfering genetics, Reactive Oxygen Species metabolism, Reperfusion Injury genetics, Transcription Factor CHOP metabolism, Kidney blood supply, Oxidative Stress, Reperfusion Injury metabolism, Transcription Factor CHOP genetics
- Abstract
Aims: Renal ischemia-reperfusion (I/R) is a major cause of acute renal failure. The mechanisms of I/R injury include endoplasmic reticulum (ER) stress, inflammatory responses, hypoxia, and generation of reactive oxygen species (ROS). CCAAT/enhancer-binding protein (C/EBP) homologous protein (CHOP) is involved in the ER stress signaling pathways. CHOP is a transcription factor and a major mediator of ER stress-induced apoptosis. However, the role of CHOP in renal I/R injury is still undefined. Here, we investigated whether CHOP could regulate I/R-induced renal injury using CHOP-knockout mice and cultured renal tubular cells as models., Results: In CHOP-knockout mice, loss of renal function induced by I/R was prevented. Renal proximal tubule damage was induced by I/R in wild-type mice; however, the degree of alteration was significantly less in CHOP-knockout mice. CHOP deficiency also decreased the I/R-induced activation of caspase-3 and -8, apoptosis, and lipid peroxidation, whereas the activity of endogenous antioxidants increased. In an in vitro I/R model, small interfering RNA targeting CHOP significantly reversed increases in H2O2 formation, inflammatory signals, and apoptotic signals, while enhancing the activity of endogenous antioxidants in renal tubular cells., Innovation: To the best of our knowledge, this is the first study which demonstrates that CHOP deficiency attenuates oxidative stress and I/R-induced acute renal injury both in vitro and in vivo., Conclusion: These findings suggest that CHOP regulates not only apoptosis-related signaling but also ROS formation and inflammation in renal tubular cells during I/R. CHOP may play an important role in the pathophysiology of I/R-induced renal injury.
- Published
- 2015
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44. Arsenic Exposure and Glucose Intolerance/Insulin Resistance in Estrogen-Deficient Female Mice.
- Author
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Huang CF, Yang CY, Chan DC, Wang CC, Huang KH, Wu CC, Tsai KS, Yang RS, and Liu SH
- Subjects
- Adiponectin blood, Animals, Blood Glucose drug effects, Female, Insulin blood, Liver metabolism, Mice, Ovariectomy, Arsenic toxicity, Estradiol pharmacology, Estrogens deficiency, Glucose Intolerance chemically induced, Insulin Resistance
- Abstract
Background: Epidemiological studies have reported that the prevalence of diabetes in women > 40 years of age, especially those in the postmenopausal phase, was higher than in men in areas with high levels of arsenic in drinking water. The detailed effect of arsenic on glucose metabolism/homeostasis in the postmenopausal condition is still unclear., Objectives: We investigated the effects of arsenic at doses relevant to human exposure from drinking water on blood glucose regulation in estrogen-deficient female mice., Methods: Adult female mice who underwent ovariectomy or sham surgery were exposed to drinking water contaminated with arsenic trioxide (0.05 or 0.5 ppm) in the presence or absence of 17β-estradiol supplementation for 2-6 weeks. Assays related to glucose metabolism were performed., Results: Exposure of sham mice to arsenic significantly increased blood glucose, decreased plasma insulin, and impaired glucose tolerance, but did not induce insulin resistance. Blood glucose and insulin were higher, and glucose intolerance, insulin intolerance, and insulin resistance were increased in arsenic-treated ovariectomized mice compared with arsenic-treated sham mice. Furthermore, liver phosphoenolpyruvate carboxykinase (PEPCK) mRNA expression was increased and liver glycogen content was decreased in arsenic-treated ovariectomized mice compared with arsenic-treated sham mice. Glucose-stimulated insulin secretion in islets isolated from arsenic-treated ovariectomized mice was also significantly decreased. Arsenic treatment significantly decreased plasma adiponectin levels in sham and ovariectomized mice. Altered glucose metabolism/homeostasis in arsenic-treated ovariectomized mice was reversed by 17β-estradiol supplementation., Conclusions: Our findings suggest that estrogen deficiency plays an important role in arsenic-altered glucose metabolism/homeostasis in females., Citation: Huang CF, Yang CY, Chan DC, Wang CC, Huang KH, Wu CC, Tsai KS, Yang RS, Liu SH. 2015. Arsenic exposure and glucose intolerance/insulin resistance in estrogen-deficient female mice. Environ Health Perspect 123:1138-1144; http://dx.doi.org/10.1289/ehp.1408663.
- Published
- 2015
- Full Text
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45. Association of Renal Function and Menopausal Status with Bone Mineral Density in Middle-aged Women.
- Author
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Sheng YH, Chen JH, Chiou JM, Tsai KS, Lee YY, Tsao CK, and Chen YC
- Subjects
- Adult, Creatinine, Cross-Sectional Studies, Drugs, Chinese Herbal therapeutic use, Female, Glomerular Filtration Rate, Humans, Kidney drug effects, Kidney Function Tests, Middle Aged, Osteoporosis epidemiology, Osteoporosis etiology, Osteoporosis pathology, Public Health Surveillance, Risk Factors, Taiwan epidemiology, Bone Density drug effects, Kidney metabolism, Kidney physiopathology, Menopause
- Abstract
The association between mild renal dysfunction and bone mineral density (BMD) has not been fully explored. It is also unclear how menopausal status and the use of Chinese herb affect this association. This is a cross-sectional study that included a total of 1,419 women aged 40 to 55 years old who were recruited from the MJ Health Management Institution in Taiwan between 2009 and 2010. Spinal BMD was assessed by dual-energy X-ray absorptiometry. Renal function was assessed using estimated glomerular filtration rate (eGFR) and creatinine clearance rate (CCr). The multivariable logistic regression and general linear models were employed to assess the association between renal function and BMD. Stratification analyses were performed by menopausal status and use of Chinese herbs. Low CCr levels were significantly associated with low BMD [adjusted odds ratio (AOR) = 1.48, 95% confidence interval (CI) = 1.15-1.90]. This association was observed in premenopausal women (AOR = 1.43, 95% CI = 1.07-1.92) and in women not taking Chinese herbs (AOR = 1.48, 95% CI = 1.14-1.94). CCr is a better predictor for low BMD in middle-aged women. Menopausal status and the use of Chinese herbs also affected this association.
- Published
- 2015
- Full Text
- View/download PDF
46. Proteomic analysis of urethral protein expression in an estrogen receptor α-deficient murine model of stress urinary incontinence.
- Author
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Chen YH, Chen CJ, Lin YN, Wu YC, Hsieh WT, Wu BT, Ma WL, Chen WC, Tsai KS, Wu SY, Chang C, Chen HY, and Yeh S
- Subjects
- Animals, Blotting, Western, Disease Models, Animal, Electrophoresis, Estrogen Receptor alpha biosynthesis, Estrogen Receptor alpha deficiency, Female, Genotype, Immunohistochemistry, Mice, Mice, Knockout, Polymerase Chain Reaction, Urethra pathology, Urinary Incontinence, Stress enzymology, Estrogen Receptor alpha genetics, Gene Expression Regulation, Proteomics methods, RNA genetics, Urethra metabolism, Urinary Incontinence, Stress genetics
- Abstract
Purpose: The roles of estrogen receptor α (ERα) in stress urinary incontinence (SUI) remain elusive. This study was conducted to understand the molecular mechanism of ERα against SUI., Methods: Wild-type (ERα(+/+)) and ACTB-cre ERα knockout (ERα(-/-)) female mice were generated. Urethral function and protein expression were measured. Leak point pressures (LPP) and maximum urethral closure pressure (MUCP) were assessed in mice under urethane anesthesia. After the measurements, the urethras were removed for proteomic analysis using the two-dimensional differential gel electrophoresis and liquid chromatography-mass spectrometry technology. Interaction between these ERα pathway proteins was further analyzed by using MetaCore. Lastly, Western blot and immunochemistry (IHC) were used to confirm the candidate protein expression levels and locations, respectively., Results: Compared with the ERα(+/+) group, the LPP and MUCP values of the ERα(-/-) group were significantly decreased. Additionally, we identified 11 differentially expressed proteins in the urethra of ERα(-/-) female mice; five proteins were down-regulated and six were up-regulated. The majority of the ERα knockout-modified proteins were involved in muscle development, contraction, and regulation, as well as immune response (amphoterin signaling and phagocytosis), proteolysis, and cell adhesion (platelet aggregation and integrin-mediated cell-matrix adhesion). IHC and Western blot confirmed the down-regulation of tropomyosin and up-regulation of myosin in urethra., Conclusions: This is the first study to estimate protein expression changes in urethras from ERα(-/-) female mice. These changes could be related to the molecular mechanism of ERα in SUI.
- Published
- 2015
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47. Low-Concentration Arsenic Trioxide Inhibits Skeletal Myoblast Cell Proliferation via a Reactive Oxygen Species-Independent Pathway.
- Author
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Liu SH, Yang RS, Yen YP, Chiu CY, Tsai KS, and Lan KC
- Subjects
- Animals, Apoptosis drug effects, Arsenic Trioxide, Cell Cycle Checkpoints drug effects, Cell Cycle Proteins genetics, Cell Cycle Proteins metabolism, Cell Line, Cell Proliferation drug effects, Intracellular Space metabolism, Mice, Phosphorylation, Proliferating Cell Nuclear Antigen metabolism, Proto-Oncogene Proteins c-akt metabolism, Arsenicals pharmacology, Myoblasts, Skeletal drug effects, Myoblasts, Skeletal metabolism, Oxides pharmacology, Reactive Oxygen Species metabolism, Signal Transduction drug effects
- Abstract
Myoblast proliferation and differentiation are essential for skeletal muscle regeneration. Myoblast proliferation is a critical step in the growth and maintenance of skeletal muscle. The precise action of inorganic arsenic on myoblast growth has not been investigated. Here, we investigated the in vitro effect of inorganic arsenic trioxide (As2O3) on the growth of C2C12 myoblasts. As2O3 decreased myoblast growth at submicromolar concentrations (0.25-1 μM) after 72 h of treatment. Submicromolar concentrations of As2O3 did not induce the myoblast apoptosis. Low-concentration As2O3 (0.5 and 1 μM) significantly suppressed the myoblast cell proliferative activity, which was accompanied by a small proportion of bromodeoxyuridine (BrdU) incorporation and decreased proliferating cell nuclear antigen (PCNA) protein expression. As2O3 (0.5 and 1 μM) increased the intracellular arsenic content but did not affect the reactive oxygen species (ROS) levels in the myoblasts. Cell cycle analysis indicated that low-concentrations of As2O3 inhibited cell proliferation via cell cycle arrest in the G1 and G2/M phases. As2O3 also decreased the protein expressions of cyclin D1, cyclin E, cyclin B1, cyclin-dependent kinase (CDK) 2, and CDK4, but did not affect the protein expressions of p21 and p27. Furthermore, As2O3 inhibited the phosphorylation of Akt. Insulin-like growth factor-1 significantly reversed the inhibitory effect of As2O3 on Akt phosphorylation and cell proliferation in the myoblasts. These results suggest that submicromolar concentrations of As2O3 alter cell cycle progression and reduce myoblast proliferation, at least in part, through a ROS-independent Akt inhibition pathway.
- Published
- 2015
- Full Text
- View/download PDF
48. Effects of high-dose phytoestrogens on circulating cellular microparticles and coagulation function in postmenopausal women.
- Author
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Cheng WC, Lo SC, Tsai KS, Tu ST, Wu JS, Chang CI, Chen CL, Shaw NS, Peng HY, Wang SY, Wu CH, Jan IS, Hsu SC, Liu CW, Lee LN, and Tai TY
- Subjects
- Blood Coagulation Factors metabolism, Double-Blind Method, Female, Healthy Volunteers, Humans, Isoflavones adverse effects, Middle Aged, Phytoestrogens adverse effects, Prospective Studies, Taiwan, Biomarkers blood, Blood Coagulation drug effects, Cell-Derived Microparticles drug effects, Isoflavones administration & dosage, Phytoestrogens administration & dosage, Postmenopause
- Abstract
Background/purpose: Estrogen in hormone replacement therapy causes homeostatic changes. However, little is known regarding the safety of high-dose phytoestrogen on coagulation and hematological parameters in healthy postmenopausal women. This study evaluated the effects of high-dose soy isoflavone (300 mg/day) on blood pressure, hematological parameters, and coagulation functions including circulating microparticles in healthy postmenopausal women., Methods: The original study is a 2-year prospective, double-blind, placebo-controlled study. In total, 431 postmenopausal women (from 3 medical centers) were randomly assigned to receive either high-dose isoflavone or placebo for 2 years. At baseline, 6 months, 1 year, and 2 years after treatment, blood pressure, body weight, liver function tests, hematological parameters, and lipid profiles were measured. The 1(st) year blood specimens of 85 cases of 144 eligible participants (from one of the three centers) were analyzed as D-dimer, von Willebrand factor antigen, factor VII, plasminogen activator inhibitor type 1, and circulating cellular microparticles, including the measurement of monocyte, platelet, and endothelial microparticles., Results: In the isoflavone group, after 1 year, the changes in liver function tests, hematological parameters, and coagulation tests were not different from those of the control. Triglyceride levels were significantly lower after 6 months of isoflavone treatment than the placebo group, but the difference did not persist after 1 year. Endothelial microparticles increased steadily in both groups during the 1-year period but the trend was not affected by treatment., Conclusion: The results of the present study indicate that high-dose isoflavone treatment (300 mg/day) does not cause hematological abnormalities or activate coagulation factors., (Copyright © 2013. Published by Elsevier B.V.)
- Published
- 2015
- Full Text
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49. Genetic determinants of antithyroid drug-induced agranulocytosis by human leukocyte antigen genotyping and genome-wide association study.
- Author
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Chen PL, Shih SR, Wang PW, Lin YC, Chu CC, Lin JH, Chen SC, Chang CC, Huang TS, Tsai KS, Tseng FY, Wang CY, Lu JY, Chiu WY, Chang CC, Chen YH, Chen YT, Fann CS, Yang WS, and Chang TC
- Subjects
- Agranulocytosis genetics, HLA-B Antigens, HLA-DRB1 Chains, Humans, Odds Ratio, Agranulocytosis chemically induced, Antithyroid Agents adverse effects, Genetic Predisposition to Disease, Genome-Wide Association Study, Genotype, HLA Antigens
- Abstract
Graves' disease is the leading cause of hyperthyroidism affecting 1.0-1.6% of the population. Antithyroid drugs are the treatment cornerstone, but may cause life-threatening agranulocytosis. Here we conduct a two-stage association study on two separate subject sets (in total 42 agranulocytosis cases and 1,208 Graves' disease controls), using direct human leukocyte antigen genotyping and SNP-based genome-wide association study. We demonstrate HLA-B*38:02 (Armitage trend Pcombined=6.75 × 10(-32)) and HLA-DRB1*08:03 (Pcombined=1.83 × 10(-9)) as independent susceptibility loci. The genome-wide association study identifies the same signals. Estimated odds ratios for these two loci comparing effective allele carriers to non-carriers are 21.48 (95% confidence interval=11.13-41.48) and 6.13 (95% confidence interval=3.28-11.46), respectively. Carrying both HLA-B*38:02 and HLA-DRB1*08:03 increases odds ratio to 48.41 (Pcombined=3.32 × 10(-21), 95% confidence interval=21.66-108.22). Our results could be useful for antithyroid-induced agranulocytosis and potentially for agranulocytosis caused by other chemicals.
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- 2015
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50. Advanced glycation end-products induce apoptosis in pancreatic islet endothelial cells via NF-κB-activated cyclooxygenase-2/prostaglandin E2 up-regulation.
- Author
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Lan KC, Chiu CY, Kao CW, Huang KH, Wang CC, Huang KT, Tsai KS, Sheu ML, and Liu SH
- Subjects
- Animals, Cell Line, Cell Survival, Diabetic Angiopathies metabolism, Diabetic Angiopathies pathology, Endoplasmic Reticulum Stress, Enzyme Activation, Islets of Langerhans blood supply, Islets of Langerhans pathology, Mice, NF-kappa B metabolism, Up-Regulation, Apoptosis, Cyclooxygenase 2 metabolism, Dinoprostone biosynthesis, Endothelial Cells physiology, Glycation End Products, Advanced physiology
- Abstract
Microvascular complications eventually affect nearly all patients with diabetes. Advanced glycation end-products (AGEs) resulting from hyperglycemia are a complex and heterogeneous group of compounds that accumulate in the plasma and tissues in diabetic patients. They are responsible for both endothelial dysfunction and diabetic vasculopathy. The aim of this study was to investigate the cytotoxicity of AGEs on pancreatic islet microvascular endothelial cells. The mechanism underlying the apoptotic effect of AGEs in pancreatic islet endothelial cell line MS1 was explored. The results showed that AGEs significantly decreased MS1 cell viability and induced MS1 cell apoptosis in a dose-dependent manner. AGEs dose-dependently increased the expressions of cleaved caspase-3, and cleaved poly (ADP-ribose) polymerase in MS1 cells. Treatment of MS1 cells with AGEs also resulted in increased nuclear factor (NF)-κB-p65 phosphorylation and cyclooxygenase (COX)-2 expression. However, AGEs did not affect the expressions of endoplasmic reticulum (ER) stress-related molecules in MS1 cells. Pretreatment with NS398 (a COX-2 inhibitor) to inhibit prostaglandin E2 (PGE2) production reversed the induction of cleaved caspase-3, cleaved PARP, and MS1 cell viability. Moreover, AGEs significantly increased the receptor for AGEs (RAGE) protein expression in MS1 cells, which could be reversed by RAGE neutralizing antibody. RAGE Neutralizing antibody could also reverse the induction of cleaved caspase-3 and cleaved PARP and decreased cell viability induced by AGEs. These results implicate the involvement of NF-κB-activated COX-2/PGE2 up-regulation in AGEs/RAGE-induced islet endothelial cell apoptosis and cytotoxicity. These findings may provide insight into the pathological processes within the pancreatic islet microvasculature induced by AGEs accumulation.
- Published
- 2015
- Full Text
- View/download PDF
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