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Goncharenko AV, Silkin VM, Chang YC. Nonlinearity vs nonlocality with emphasis on bandwidth broadening in semiconductor-based 1d metamaterials. Opt Express 2024; 32:12551-12568. [PMID: 38571075 DOI: 10.1364/oe.512215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/06/2024] [Indexed: 04/05/2024]
Abstract
The physics of nonlinear optical materials is incredibly versatile, with the design of novel materials and structures offering numerous degrees of freedom. Nevertheless, weak inherent nonlinearity of conventional optical materials continues to hinder the progress of a number of important applications. In this study, we delve into the realm of broadband enhancement of nonlinearity within one-dimensional (1d) plasmonic metamaterials, exploring its intricate connection with nonlocality. Specifically, we introduce a phenomenological framework for quantifying the effective third-order nonlinear susceptibility of 1d multiphase plasmonic nanostructures, utilizing heavily doped semiconductors, and subsequently applying this approach using realistic material parameters. Both direct and inverse problems of nonlinearity enhancement have been addressed. Our findings demonstrate a remarkable capability to significantly augment the third-order nonlinear susceptibility across a defined frequency range, while concurrently gauging the impact of nonlocality on this enhancement.
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Huang YS, Wang H, Chang YC. Polyarteritis nodosa with bead-like coronary aneurysm in identical twins. QJM 2024; 117:143-144. [PMID: 37843445 DOI: 10.1093/qjmed/hcad239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Indexed: 10/17/2023] Open
Affiliation(s)
- Y S Huang
- Department of Cardiology, Xiamen Chang Gung Memorial Hospital, 123 XiaFei Road, XinYang Industrial Area, Haicang, Xiamen, 361028, People's Republic of China
| | - H Wang
- Department of Cardiology, Beijing Royal Integrative Medicine Hospital, No. 1, Wangfu street, Changping District, Beijing 102200, People's Republic of China
| | - Y C Chang
- Department of Cardiology, Xiamen Chang Gung Memorial Hospital, 123 XiaFei Road, XinYang Industrial Area, Haicang, Xiamen, 361028, People's Republic of China
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Davis MJ, Martin RE, Pinheiro GM, Hoke ES, Moyer S, Ueno K, Rodriguez-Gil JL, Mallett MA, Khillan JS, Pavan WJ, Chang YC, Kwon-Chung KJ. Inbred SJL mice recapitulate human resistance to Cryptococcus infection due to differential immune activation. mBio 2023; 14:e0212323. [PMID: 37800917 PMCID: PMC10653822 DOI: 10.1128/mbio.02123-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 10/07/2023] Open
Abstract
IMPORTANCE Cryptococcosis studies often utilize the common C57BL/6J mouse model. Unfortunately, infection in these mice fails to replicate the basic course of human disease, particularly hampering immunological studies. This work demonstrates that SJL/J mice can recapitulate human infection better than other mouse strains. The immunological response to Cryptococcus infection in SJL/J mice was markedly different from C57BL/6J and much more productive in combating this infection. Characterization of infected mice demonstrated strain-specific genetic linkage and differential regulation of multiple important immune-relevant genes in response to Cryptococcus infection. While our results validate many of the previously identified immunological features of cryptococcosis, we also demonstrate limitations from previous mouse models as they may be less translatable to human disease. We concluded that SJL/J mice more faithfully recapitulate human cryptococcosis serving as an exciting new animal model for immunological and genetic studies.
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Affiliation(s)
- M. J. Davis
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - R. E. Martin
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - G. M. Pinheiro
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - E. S. Hoke
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - S. Moyer
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - K. Ueno
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - J. L. Rodriguez-Gil
- Genomics, Development and Disease Section, Computational and Statistical Genomics Branch, National Human Genome Research Institute, National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - M. A. Mallett
- Mouse Genetics and Gene Modification Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - J. S. Khillan
- Mouse Genetics and Gene Modification Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - W. J. Pavan
- Genomics, Development and Disease Section, Computational and Statistical Genomics Branch, National Human Genome Research Institute, National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Y. C. Chang
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - K. J. Kwon-Chung
- Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
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Lu SL, Yang WC, Chang YC, Chao CC, Liang CH, Chiang PL, Lin V, Lu JT, Hsu FM. Automated Detection, Segmentation, and Tracking of Brain Metastases in Repeated Courses of Stereotactic Radiosurgery Using Integrated Artificial Intelligence. Int J Radiat Oncol Biol Phys 2023; 117:e476. [PMID: 37785511 DOI: 10.1016/j.ijrobp.2023.06.1690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Salvage stereotactic radiosurgery (SRS) for distant brain metastases has been demonstrated as a safe and effective approach for intracranial recurrences after initial SRS. However, accurate tumor detection and segmentation among responding tumors within the irradiated parenchyma can be challenging. The requirement for the registration and reference to the previous course of SRS is very time-consuming and suffers significant inter and intra-reader variability. Artificial intelligence (AI)-assisted system has been proven to improve the accuracy and efficiency in the clinical flow of de-novo SRS. We hypothesize that an integrated AI system can facilitate an automated tumor contouring process for repeated SRS. MATERIALS/METHODS Three patients who underwent their third course of SRS to brain metastases were selected for the pioneering works. They have had two sessions of SRS with a mean lesion number of 4 and 3.7, respectively. VBrain, an FDA-approved brain tumor management AI platform, was used to co-registered serial MR scans and automatically identify, track, and contour brain metastases for each course of SRS. The AI also indicated new lesions and treated lesions for each course. Three radiation oncologists experienced in brain SRS contoured the gross tumor volumes (GTVs) of the third course of SRS in two reader modes (assisted then unassisted) with a memory washout period of one week between each section. The segmentation ground truth was established through consensus among the three experts. Lesion-wise sensitivity, contouring accuracy, and consuming time were compared between the two contouring modes. RESULTS In each patient, there were 15, 11, and 9 metastases, with a median diameter of 4.72 (95% CI: 4.05, 6.91) mm. The mean lesion-wise sensitivity was 96.96±2.47% with AI assistance and 76.90 ± 7.10% without assistance. There were two false-positive lesions in the assisted read, resulting in a low average false-positive rate of 0.67 per patient, while no false positive for the unassisted mode. AI assistance improved contouring accuracy. The median Dice similarity coefficient (DSC) was 0.71 (95% CI: 0.55, 0.87) for assisted contouring and 0.65 (95% CI: 0.46, 0.85) for unassisted contouring. We also use average Hausdorff distance (HD) to measure segmentation results. The mean HD was 0.72± 0.13 mm versus 0.73±0.08 mm for the two contouring modes (p = 0.02) Furthermore, the median contouring time per case was significantly shorter with AI assistance than without assistance (20.8 minutes vs. 29.8 minutes; p < 0.001), corresponding to a 43.2% time-saving. CONCLUSION Our results suggest that the integration of an AI-based system into repeated brain SRS can significantly improve the accuracy and efficiency of tumor detection and segmentation. This approach has the potential to streamline the treatment planning process for salvage SRS.
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Affiliation(s)
- S L Lu
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - W C Yang
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | | | | | | | | | - V Lin
- Vysioneer Inc., Cambridge, MA
| | - J T Lu
- Vysioneer Inc., Cambridge, MA
| | - F M Hsu
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
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Han DY, Zhang YF, Wang ZM, Chang YC, Wang XS. Screening of hub genes for prognosis of gastric cancer based on bioinformatics. J BIOL REG HOMEOS AG 2021; 35:1127-1135. [PMID: 34096252 DOI: 10.23812/20-671-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D Y Han
- Clinical Laboratory, Henan University of Science and Technology Affiliated First Hospital, Luoyang, Henan, China
| | - Y F Zhang
- Clinical Laboratory, Henan University of Science and Technology Affiliated First Hospital, Luoyang, Henan, China
| | - Z M Wang
- Henan Key Laboratory of Cancer Epigenetics of Cancer Hospital, Henan University of Science and Technology Affiliated First Hospital, Luoyang, Henan, China
| | - Y C Chang
- Clinical Laboratory, Henan University of Science and Technology Affiliated First Hospital, Luoyang, Henan, China
| | - X S Wang
- Henan Key Laboratory of Cancer Epigenetics of Cancer Hospital, Henan University of Science and Technology Affiliated First Hospital, Luoyang, Henan, China
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Zhou Y, Lu H, Tan CY, Qu ZW, Chang YC, Han ZW, Si JQ, Ma KT, Li L. [Changes of BK(Ca) on vascular striaepericytes of D-galactose-induced aging model in guinea pigs]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:843-849. [PMID: 31795546 DOI: 10.3760/cma.j.issn.1673-0860.2019.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: The aging model of guinea pigs induced by D-galactose was set up to investigate the changes of BK(Ca) expression and function on cochlear pericytes and their relationship with age-related hearing loss. Methods: Thirty healthy 8-week-old guinea pigs were randomly divided into three groups, with 10 in each group: D-galactose aging model group, subcutaneous injection of D-galactose (500 mg/kg) daily for 6 weeks; saline control group, the same amount of saline was injected into the neck of the aging model group for 6 weeks; the blank control group, no treatment was performed. The threshold of auditory brainstem response (ABR) was detected. The content of BK(Ca) in the perivascular cells of the guinea pig cochlear cells was detected by immunofluorescence technique. The changes of peripheral current density and BK(Ca) current were detected by patch clamp technique. The data were analyzed by GraphPad Prism software. Results: Compared with the saline group and the control group, the ABR threshold and the amplitude of the wave I were significantly decreased in the aging model group, and the difference was statistically significant (P<0.01). Compared with the control group, the expression of BK(Ca) in the vascular pericytes of guinea pigs in the aging model group was significantly reduced (1.00±0.08 vs 0.27±0.03,the difference was statistically significant P<0.01), and the cell current density and BK(Ca) net current value were also significantly reduced with statistically significant (P<0.01). Conclusions: D-galactose can successfully induce guinea pig aging model, in which BK(Ca) expression decreases and net current value decreases in pericytes of cochlear striavascularis, and changes in BK(Ca) expression and function may be related to age-related hearing loss.
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Affiliation(s)
- Y Zhou
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - H Lu
- Department of Human Anatomy, Shihezi University Medical College, Shihezi 832002, China
| | - C Y Tan
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - Z W Qu
- Department of Pharmacology, Shihezi University Pharmacy College, Shihezi 832002, China
| | - Y C Chang
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - Z W Han
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - J Q Si
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - K T Ma
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, China
| | - L Li
- Department of Physiology, Shihezi University Medical College, Shihezi 832002, Chinal (Li Li is now in the Department of Physiology, Jiaxing College of Medicine, Jiaxing 314000, China)
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Wu MY, Wang CH, Ng CY, Kuo TT, Chang YC, Yang CH, Lin JY, Ho HC, Chung WH, Chen CB. Periorbital erythema and swelling as a presenting sign of lupus erythematosus in tertiary referral centers and literature review. Lupus 2018; 27:1828-1837. [PMID: 30134759 DOI: 10.1177/0961203318792358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Cutaneous lupus erythematosus (CLE) includes a broad range of dermatologic manifestations. Periorbital involvement, however, is a relatively rare clinical presentation of CLE. Objectives This clinical study aimed to investigate the characteristics of this unique presentation of CLE in tertiary medical centers. Methods We enrolled patients with periorbital erythema and swelling as the presenting sign of lupus erythematosus, from January 2003 to November 2017, using the data of 553 pathologically proven CLE cases from the registration database of the Chang Gung Memorial Hospitals in Taiwan. Results We enrolled a total of 25 patients. The mean age was 46.7 years and 68% of the patients were female. Most of the patients (84.0%) presented with unilateral involvement, with the left orbit involved in 15 patients (60%); the upper eyelid was the most frequently involved (72%). Mean duration between the onset of clinical manifestations and the diagnosis of CLE was approximately 59 weeks. Nineteen patients had been previously misdiagnosed. All patients had features compatible with CLE on histopathological examination. In contrast, laboratory analysis of the autoimmune profile often revealed negative results, including those for antinuclear antibodies (25%). Notably, anti-SSA/SSB (45.5%) showed the highest positive rate. During follow-up, six patients developed systemic lupus erythematosus (SLE) and two patients developed Sjögren syndrome. Conclusions The diagnosis of CLE presenting as periorbital erythema and swelling is often delayed because of clinical mimicry and the high proportion of negative results on autoantibody tests. Increased clinical suspicion and prompt histopathological examination are crucial for early diagnosis. Moreover, one-fourth of the patients ultimately developed SLE, which highlights the importance of clinical awareness.
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Affiliation(s)
- M Y Wu
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C H Wang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C Y Ng
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,7 Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - T T Kuo
- 2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,7 Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Y C Chang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - C H Yang
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - J Y Lin
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - H C Ho
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan
| | - W H Chung
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,4 Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,5 Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.,6 Department of Dermatology, Chang Gung Memorial Hospital, Xiamen, China
| | - C B Chen
- 1 Department of Dermatology, Chang Gung Memorial Hospital, Taipei, Linkou, and Keelung, Taiwan.,2 College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan, Taiwan.,3 Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,4 Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.,5 Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.,6 Department of Dermatology, Chang Gung Memorial Hospital, Xiamen, China
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Chen JH, Chang YC, Hung WL. A robust automatic clustering algorithm for probability density functions with application to categorizing color images. COMMUN STAT-SIMUL C 2017. [DOI: 10.1080/03610918.2017.1337137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- J. H. Chen
- Institute for Computational and Modeling Science, National Tsing Hua University, Hsin-Chu, Taiwan
| | - Y. C. Chang
- Center for General Education, National Tsing Hua University, Hsin-Chu, Taiwan
| | - W. L. Hung
- Center for Teacher Education, National Tsing Hua University, Hsin-Chu, Taiwan
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Escalante CP, Chang YC, Liao K, Rouleau T, Halm J, Bossi P, Bhadriraju S, Brito-Dellan N, Sahai S, Yusuf SW, Zalpour A, Elting LS. Meta-analysis of cardiovascular toxicity risks in cancer patients on selected targeted agents. Support Care Cancer 2016; 24:4057-74. [PMID: 27344327 DOI: 10.1007/s00520-016-3310-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 06/07/2016] [Indexed: 12/18/2022]
Abstract
PURPOSE The purpose was to estimate the risk and severity of cardiovascular toxicities associated with selected targeted agents. METHODS We searched English-language literature for randomized clinical trials published between January 1, 2000 and November 30, 2013 of targeted cancer therapy drugs approved by the FDA by November 2010. One hundred ten studies were eligible. Using meta-analytic methods, we calculated the relative risks of several cardiovascular toxicities [congestive heart failure (CHF), decreased left ventricular ejection fraction (DLVEF), myocardial infarction (MI), arrhythmia, and hypertension (HTN)], adjusting for sample size using the inverse-variance technique. For each targeted agent and side effect, we calculated the number needed to harm. RESULTS Regarding CHF, trastuzumab showed significantly greater risk of all-grade and high-grade CHF. There was significant increased risk of all-grade DLVEF with sorafenib, sunitinib, and trastuzumab and high-grade DLVEF with bevacizumab and trastuzumab. Sorafenib was associated with significant increased all-grade risk of MI based on one study. None was associated with high-grade risk of MI or increased risk of arrhythmia. Bevacizumab, sorafenib, and sunitinib had significant increased risk of all-grade and high-grade HTN. CONCLUSIONS Several of the targeted agents were significantly associated with increased risk of specific cardiovascular toxicities, CHF, DLVEF, and HTN. Several had significant increased risk for high-grade cardiovascular toxicities (CHF, DLVEF, and HTN). Patients receiving such therapy should be closely monitored for these toxicities and early and aggressive treatment should occur. However, clinical experience has demonstrated that some of these toxicities may be reversible and due to secondary effects.
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Affiliation(s)
- C P Escalante
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Y C Chang
- Houston Independent School District, Houston, TX, USA
| | - K Liao
- Department of Health Services Research, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - T Rouleau
- Carolinas Medical Center, Charlotte, NC, USA
| | - J Halm
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Bossi
- Fondazione IRCCS, Istituto Nazionale dei Tumori, Milan, Italy
| | - S Bhadriraju
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - N Brito-Dellan
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S Sahai
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of General Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S W Yusuf
- Department of Cardiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A Zalpour
- Division of Pharmacy, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L S Elting
- Department of Health Services Research, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Cho CY, Cheng HP, Chang YC, Tang CY, Chen YF. An energy adjustable linearly polarized passively Q-switched bulk laser with a wedged diffusion-bonded Nd:YAG/Cr⁴⁺:YAG crystal. Opt Express 2015; 23:8162-8169. [PMID: 25837153 DOI: 10.1364/oe.23.008162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An energy adjustable passively Q-switched laser is demonstrated with a composite Nd:YAG/Cr⁴⁺:YAG crystal by applying a wedged interface inside the crystal. The theoretical model of the monolithic laser resonator is explored to show the energy adjustable feature with different initial transmissions of the saturable absorber at the horizontal axis. By adjusting the pump beam location across the Nd:YAG crystal, the output pulse energy can be flexibly changed from 10.9 μJ to 17.6 μJ while maintaining the same output efficiency. The polarization state of the laser output is found to be along with the polarization of the C-mount pump diode. Finally, the behavior of the multi-transverse-mode oscillation is also discussed for eliminating the instability of the pulse train.
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Liu T, Wang Y, Eyler A, Chang YC, Zhong WH. Facilitating protein denaturation in organic solvent and the contribution to the promoting dispersion of graphite nanoplatelets in a polymer. EXPRESS POLYM LETT 2015. [DOI: 10.3144/expresspolymlett.2015.64] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wu HC, Chang YC, Wu JH, Lin JH, Lin IK, Chen CS. Methanation of CO2 and reverse water gas shift reactions on Ni/SiO2 catalysts: the influence of particle size on selectivity and reaction pathway. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00667h] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The consecutive and parallel reaction pathways show preferences for small Ni clusters and large Ni particles, respectively.
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Affiliation(s)
- H. C. Wu
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
| | - Y. C. Chang
- Taiwan Power Research Institute
- Shu-Lin Taipei New City 23847
- Republic of China
| | - J. H. Wu
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
| | - J. H. Lin
- Department of Materials Science
- National University of Tainan
- Tainan 700
- Republic of China
| | - I. K. Lin
- Department of Materials Science
- National University of Tainan
- Tainan 700
- Republic of China
| | - C. S. Chen
- Center for General Education
- Chang Gung University
- Taoyuan City 33302
- Republic of China
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Cheng SM, Chang YC, Liu CY, Lee JYC, Chan HH, Kuo CW, Lin KY, Tsai SL, Chen SH, Li CF, Leung E, Kanwar JR, Huang CC, Chang JY, Cheung CHA. YM155 down-regulates survivin and XIAP, modulates autophagy and induces autophagy-dependent DNA damage in breast cancer cells. Br J Pharmacol 2014; 172:214-34. [PMID: 25220225 DOI: 10.1111/bph.12935] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 08/14/2014] [Accepted: 09/08/2014] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND PURPOSE The aim of this study was to determine the potency and molecular mechanism of action of YM155, a first-in-class survivin inhibitor that is currently under phase I/II clinical investigations, in various drug-resistant breast cancers including the oestrogen receptor positive (ER(+) ) tamoxifen-resistant breast cancer and the caspase-3-deficient breast cancer. EXPERIMENTAL APPROACH The potency of YM155 in SK-BR-3, MDA-MB-231, MCF7 and its tamoxifen-resistant sublines, TamR6, TamR7, TamR8, TamC3 and TamC6, were determined by MTT assay. Western blot analysis, flow cytometric analysis, reverse transcription-PCR, fluorescent microscopy and comet assay were used to determine the molecular mechanism of action of YM155 in different breast cancer cell lines. KEY RESULTS YM155 was equally potent towards the parental ER(+) /caspase-3-deficient MCF7 breast cancer cells and its tamoxifen-resistant sublines in vitro. The ER(-) /HER2(+) SK-BR-3 breast cancer cells and the triple-negative/caspase-3-expressing metastatic aggressive MDA-MB-231 breast cancer cells were also sensitive to YM155 with IC50 values in the low nanomolar range. Targeting survivin by YM155 modulated autophagy, induced autophagy-dependent caspase-7 activation and autophagy-dependent DNA damage in breast cancer cells. Interestingly, YM155 also induced XIAP degradation and the degradation of XIAP might play an important role in YM155-induced autophagy in breast cancer cells. CONCLUSIONS AND IMPLICATIONS YM155 is a potent survivin inhibitor that has potential for the management of various breast cancer subtypes regardless of the expression of ER, HER2 and caspase-3. Importantly, this study provides new insights into YM155's molecular mechanism of action and therapeutic potential in the treatment of tamoxifen-resistant breast cancer.
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Affiliation(s)
- S M Cheng
- The Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Shi JB, Wu PF, Chen YC, Chang YC, Tsai MZ, Cheng FC, Kao CT, Lee HW, Chen MY, Huang YJ, Huang RY, Lin SK. Conversion of CuS thin films to structured nanosheet CuyS (1 < y ≦ 2) by vacuum annealing. Crystal Research and Technology 2014. [DOI: 10.1002/crat.201400176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. B. Shi
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - P. F. Wu
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Y. C. Chen
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Y. C. Chang
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - M. Z. Tsai
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - F. C. Cheng
- Professor & Director in Stem Cell Center; Department of Medical Research; Taichung Veterans General Hospital; No. 160, 3rd Section, Taichung Harbor Road Taichung 40705 Taiwan
| | - C. T. Kao
- Department of Dentistry; College of Oral Medicine; Chung Shan Medical University; Dental Department; Chung Shan Medical University Hospital; No. 110, Sec. 1, Jianguo N. Rd. Taichung 40201 Taiwan
| | - H. W. Lee
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - M. Y. Chen
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Y. J. Huang
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - R. Y. Huang
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - S. K. Lin
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
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Wu PF, Shi JB, Chang YC, Tsai MZ, Kao CT, Cheng FC, Lee HW, Chen MY, Huang YJ, Huang RY, Lin SK. Synthesis on large area and uniform nanosheet morphology of polycrystalline cobalt oxide Co3O4obtained from oxidation of Co films in a pure oxygen atmosphere. Crystal Research and Technology 2014. [DOI: 10.1002/crat.201400208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- P. F. Wu
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - J. B. Shi
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Y. C. Chang
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - M. Z. Tsai
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Chia-Tze Kao
- Department of Dentistry; College of Oral Medicine; Chung Shan Medical University; Dental Department; Chung Shan Medical University Hospital; No. 110, Sec. 1, Jianguo N. Rd. Taichung 40201 Taiwan
| | - F. C. Cheng
- Professor & Director in Stem Cell Center; Department of Medical Research; Taichung Veterans General Hospital; No. 160, 3rd Section, Taichung Harbor Road Taichung 40705 Taiwan
| | - H. W. Lee
- Ph. D. Program of Electrical and Communications Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - M. Y. Chen
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - Y. J. Huang
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - R. Y. Huang
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
| | - S. K. Lin
- Department of Electronic Engineering; Feng Chia University; No. 100, Wenhwa Rd., Seatwen Taichung 40724 Taiwan
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Chua K, Chang YC, Gaze MN, Short SC, Fersht N. O08 * HAEMATOLOGICAL TOXICITIES IN CRANIOSPINAL RADIOTHERAPY: A 10-YEAR REVIEW. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou250.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cheng Lin W, Liu CC, Shih CH, Chang YC. P-165 * SUBXYPHOID UNIPORT VIDEO-ASSISTED THORACOSCOPIC SURGERY FOR PULMONARY METASTASECTOMY. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chang YC, Lin WC. P-187 * NON-INTUBATED SINGLE-PORT THORACOSCOPIC SURGERY FOR PRIMARY SPONTANEOUS PNEUMOTHORAX. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chang YC, Lee KH, Chen TH, Tsai PJ, Chen PY, Guo MC, Lin SA, Chen JY, Yang WC, Ng YY. A case of intraperitoneal fracture of a double-cuff Tenckhoff catheter. Perit Dial Int 2014; 34:132-4. [PMID: 24525604 DOI: 10.3747/pdi.2012.00239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y C Chang
- Division of Nephrology1 Department of Medicine2 Department of Surgery3 Taipei Veterans General Hospital National Yang-Ming University School of Medicine Taipei, Taiwan
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Chang YC, Huang SC, Chen KF. Evaluation of the effects of nanoscale zero-valent iron (nZVI) dispersants on intrinsic biodegradation of trichloroethylene (TCE). Water Sci Technol 2014; 69:2357-63. [PMID: 24901632 DOI: 10.2166/wst.2014.169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, the biodegradability of nanoscale zero-valent iron (nZVI) dispersants and their effects on the intrinsic biodegradation of trichloroethylene (TCE) were evaluated. Results of a microcosm study show that the biodegradability of three dispersants followed the sequence of: polyvinyl alcohol-co-vinyl acetate-co-itaconic acid (PV3A) > polyoxyethylene (20) sorbitan monolaurate (Tween 20) > polyacrylic acid (PAA) under aerobic conditions, and PV3A > Tween 20 > PAA under anaerobic conditions. Natural biodegradation of TCE was observed under both aerobic and anaerobic conditions. No significant effects were observed on the intrinsic biodegradation of TCE under aerobic conditions with the presence of the dispersants. The addition of PAA seemed to have a slightly adverse impact on anaerobic TCE biodegradation. Higher accumulation of the byproducts of anaerobic TCE biodegradation was detected with the addition of PV3A and Tween 20. The diversity of the microbial community was enhanced under aerobic conditions with the presence of more biodegradable PV3A and Tween 20. The results of this study indicate that it is necessary to select an appropriate dispersant for nZVI to prevent a residual of the dispersant in the subsurface. Additionally, the effects of the dispersant on TCE biodegradation and the accumulation of TCE biodegrading byproducts should also be considered.
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Affiliation(s)
- Y C Chang
- Department of Civil Engineering, National Chi Nan University, 1 University Rd, Puli, Nantou 54561, Taiwan E-mail:
| | - S C Huang
- Department of Civil Engineering, National Chi Nan University, 1 University Rd, Puli, Nantou 54561, Taiwan E-mail:
| | - K F Chen
- Department of Civil Engineering, National Chi Nan University, 1 University Rd, Puli, Nantou 54561, Taiwan E-mail:
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Chang YC, Chen. 6 Significance of octanol-water partition coefficient and molecular weight as molecular descriptors in predicting skin permeability of chemical substances. Occup Environ Med 2013. [DOI: 10.1136/oemed-2013-101717.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Berry-Pusey BN, Chang YC, Prince SW, Chu K, David J, Taschereau R, Silverman RW, Williams D, Ladno W, Stout D, Tsao TC, Chatziioannou A. A semi-automated vascular access system for preclinical models. Phys Med Biol 2013; 58:5351-62. [PMID: 23877111 DOI: 10.1088/0031-9155/58/16/5351] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Murine models are used extensively in biological and translational research. For many of these studies it is necessary to access the vasculature for the injection of biologically active agents. Among the possible methods for accessing the mouse vasculature, tail vein injections are a routine but critical step for many experimental protocols. To perform successful tail vein injections, a high skill set and experience is required, leaving most scientists ill-suited to perform this task. This can lead to a high variability between injections, which can impact experimental results. To allow more scientists to perform tail vein injections and to decrease the variability between injections, a vascular access system (VAS) that semi-automatically inserts a needle into the tail vein of a mouse was developed. The VAS uses near infrared light, image processing techniques, computer controlled motors, and a pressure feedback system to insert the needle and to validate its proper placement within the vein. The VAS was tested by injecting a commonly used radiolabeled probe (FDG) into the tail veins of five mice. These mice were then imaged using micro-positron emission tomography to measure the percentage of the injected probe remaining in the tail. These studies showed that, on average, the VAS leaves 3.4% of the injected probe in the tail. With these preliminary results, the VAS system demonstrates the potential for improving the accuracy of tail vein injections in mice.
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Affiliation(s)
- B N Berry-Pusey
- Crump Institute for Molecular Imaging at UCLA, 570 Westwood Plaza, Los Angeles, CA 90095, USA.
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Huang CC, Chen JC, Chang YC, Jeng JH, Chen CM. A fractal dimensional approach to successful evaluation of apical healing. Int Endod J 2012; 46:523-9. [PMID: 23176604 DOI: 10.1111/iej.12020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Accepted: 10/07/2012] [Indexed: 11/29/2022]
Abstract
AIM To evaluate whether the initial healing of apical radiolucencies 1 year after root canal treatment could be quantitatively identified by the change in fractal dimension (FD) values for the eventually completely healed cases. METHODOLOGY Twenty-six patients with successful root canal treatment were recruited. All teeth were associated with complete healing either before or at 1 year following treatment (six of 26) or still undergoing healing at 1 year after treatment but completely healed thereafter (20 of 26). Two radiographs were selected for the same patient, one taken before treatment and the other taken 1 year after treatment. Eight regions of interests (ROIs) were selected from each radiograph, two as the experimental group located close to the infected root apex, two as the control group in the healthy bone and the other four in the healthy bone ensuring the image quality. RESULTS Based on the FD values of the four ROIs in the healthy bone, the two radiographs were confirmed to have been taken with similar projection angles and exposure. The FD values were shown to significantly increase (P = 0.006) and decrease (P = 0.000) around the root apex and the neighbouring region of the apical lesion, respectively. CONCLUSION Changes in fractal dimension values may serve as a necessary condition to quantitatively indicate the initial healing status 1 year after root canal treatment.
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Affiliation(s)
- C C Huang
- Department of Dentistry, National Taiwan University Hospital and, Graduate Institute of Clinical Dentistry, National Taiwan University Medical College, Taiwan
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Shih FJ, Chang YC, Chen CF, Lin FJ, Huang YS, Yan YH, Shih FJ, Chen CR. Difficulties in organ procurement and transplantation in the aboriginal minority people in Taiwan. Transplant Proc 2012; 44:832-4. [PMID: 22564560 DOI: 10.1016/j.transproceed.2012.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Aboriginal people (AP) are a minority group in Taiwan. Little information on their perspectives on organ transplantation (OT) is available. Their rights for organ donation (OD) and as OT recipients (OTR) are constrained as a vulnerable population in society. This research sought to explore various Highland Aborigine Tribes beliefs systems and concepts related to OT. METHODS We employed a qualitative design on a purposive sample including seven categories of Taiwanese AP. Data collected by face-to-face interviews were evaluated by content analysis. RESULTS Seventy-five informants (45 female and 30 males) of 18 to 82 years from seven tribes completed interviews: Bunun (n = 20), Shao (n = 18), Tsou (n = 15), Amis (n = 12), Truku (n = 4), Rukai (n = 3), and Puyuma (n = 3). Of there, 33% had no idea of OT. All informants reported lack of knowledge of OD, organ procurement, and OTR. Eighty percent (45-82 years) had no willingness for OD or OTR; others might consult family members and health professionals (HP) to learn about OT. Seven hindering factors were identified: (1) having no background of OT; (2) limited impressions obtained from television news reports; (3) negative concepts of donating one's organs to others; (4) OT concepts contrast with cultural meanings of death; (5) possibility of being stigmatized; (6) fear of being rejected by others; and (7) HP had never mentioned OT. CONCLUSIONS Taiwan APs' perspectives of OT concepts showed the majority to be unfamiliar with the concept and benefits of OT. Future research is necessary to explore the possible avenues to facilitate communications between HP and AP leaders, as well as elders in each AP category in Taiwan.
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Affiliation(s)
- F J Shih
- Institute of Clinical & Community Health Nursing, National Yang-Ming University, Taiwan
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Chaou CH, Lai YL, Chang YC. X-Ray Quiz: A Construction Worker with Blunt Chest Injury. HONG KONG J EMERG ME 2012. [DOI: 10.1177/102490791201900213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- CH Chaou
- Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Department of Emergency Medicine, No. 5, Fu Hsing Street, Kuei-Shang County, Tao-Yuan, Taiwan; and National Taiwan University, Graduate Institute of Epidemiology, College of Public Health, Taipei, Taiwan
| | - YL Lai
- Taipei Veterans General Hospital, Department of Surgery, National Yang-Ming University, Taipei, Taiwan
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Nestadt G, Wang Y, Grados MA, Riddle MA, Greenberg BD, Knowles JA, Fyer AJ, McCracken JT, Rauch SL, Murphy DL, Rasmussen SA, Cullen B, Piacentini J, Geller D, Pauls D, Bienvenu OJ, Chen Y, Liang KY, Goes FS, Maher B, Pulver AE, Shugart YY, Valle D, Samuels JF, Chang YC. Homeobox genes in obsessive-compulsive disorder. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:53-60. [PMID: 22095678 PMCID: PMC3250212 DOI: 10.1002/ajmg.b.32001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 10/20/2011] [Indexed: 11/07/2022]
Abstract
BACKGROUND Despite evidence that obsessive-compulsive disorder (OCD) is a familial neuropsychiatric condition, progress aimed at identifying genetic determinants of the disorder has been slow. The OCD Collaborative Genetics Study (OCGS) has identified several OCD susceptibility loci through linkage analysis. METHODS In this study we investigate two regions on chromosomes 15q and 1q by first refining the linkage region using additional short tandem repeat polymorphic (STRP) markers. We then performed association analysis on single nucleotide polymorphisms (SNP) genotyped (markers placed every 2-4 kb) in the linkage regions in the OCGS sample of 376 rigorously phenotyped affected families. RESULTS Three SNPs are most strongly associated with OCD: rs11854486 (P = 0.00005 [0.046 after adjustment for multiple tests]; genetic relative risk (GRR) = 11.1 homozygous and 1.6 heterozygous) and rs4625687 [P = 0.00007 (after adjustment = 0.06); GRR = 2.4] on 15q; and rs4387163 (P = 0.0002 (after adjustment = 0.08); GRR = 1.97) on 1q. The first SNP is adjacent to NANOGP8, the second SNP is in MEIS2, and the third is 150 kb between PBX1 and LMX1A. CONCLUSIONS All the genes implicated by association signals are homeobox genes and are intimately involved in neurodevelopment. PBX1 and MEIS2 exert their effects by the formation of a heterodimeric complex, which is involved in development of the striatum, a brain region involved in the pathophysiology of OCD. NANOGP8 is a retrogene of NANOG, a homeobox transcription factor known to be involved in regulation of neuronal development. These findings need replication; but support the hypothesis that genes involved in striatal development are implicated in the pathogenesis of OCD.
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Affiliation(s)
- G Nestadt
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21287, USA.
| | - Y Wang
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - MA Grados
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - MA Riddle
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - BD Greenberg
- Department of Psychiatry and Human Behavior, Brown Medical School, Butler Hospital
| | - JA Knowles
- Department of Psychiatry, Keck Medical School, University of Southern California
| | - AJ Fyer
- College of Physicians and Surgeons at Columbia University
| | - JT McCracken
- Department of Psychiatry and Biobehavioral Sciences, School of Medicine, University of California, Los Angeles
| | - SL Rauch
- Departments of Psychiatry and Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital and Harvard Medical School
| | - DL Murphy
- Laboratory of Clinical Science, NIMH, NIH, Bethesda
| | - SA Rasmussen
- Department of Psychiatry and Human Behavior, Brown Medical School, Butler Hospital
| | - B Cullen
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - J Piacentini
- Department of Psychiatry and Biobehavioral Sciences, School of Medicine, University of California, Los Angeles
| | - D Geller
- Departments of Psychiatry and Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital and Harvard Medical School
| | - D Pauls
- Departments of Psychiatry and Psychiatric and Neurodevelopmental Genetics Unit, Massachusetts General Hospital and Harvard Medical School
| | - OJ Bienvenu
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - Y Chen
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University
| | - KY Liang
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University
| | - FS Goes
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - B Maher
- Department of Mental Health, Bloomberg School of Public Health, Johns Hopkins University
| | - AE Pulver
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - Y Y Shugart
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
,Genomic Research Branch, Division of Neuroscience and Basic Behavioral Science, National Institute of Mental Health, National Institutes of Health, Bethesda, MD
| | - D Valle
- Department of Pediatrics, School of Medicine, Johns Hopkins University
| | - JF Samuels
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University
| | - YC Chang
- Department of Medicine, University of Maryland School of Medicine
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Wu KH, Chang YC, Zheng MZ, Yang CC, Lin WP. Preparation and characterization of Ag-deposited aminosilane-modified silicate by chemical reduction method. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/polb.22205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
BACKGROUND Adult-onset atopic dermatitis (AD) has recently been recognized as a distinct disease entity, but its risk factors have not yet been clearly defined. Although gestational and perinatal exposure to tobacco smoking may be associated with the development of classic AD, the association between active/passive smoking and adult-onset AD remains controversial. OBJECTIVES To determine if exposure to smoking, including environmental tobacco smoke (ETS), is associated with the risk of adult-onset AD. METHODS Tobacco smoking and exposure to ETS were measured in a case-control association analysis in 83 patients with physician-diagnosed adult-onset AD and 142 age- and sex-matched controls. RESULTS Multiple logistic regression analyses showed that, among the potential environmental risk factors, both current and ever smoking were significant risk factors for adult-onset AD [odds ratio (OR) 4·994 and 3·619, respectively], compared with never smoking. Also, packs per year was significantly associated with adult-onset AD (OR 1·058, 95% confidence interval 1·028-1·089), suggesting a lifelong cumulative risk in current smokers. Moreover, nonsmokers with adult-onset AD reported significantly more exposure to ETS. CONCLUSIONS Early and/or current exposure to cigarette smoking may contribute cumulatively to the development of adult-onset AD. Exposure to ETS in childhood is associated with the development of adult-onset AD. Adults should be discouraged from smoking to prevent adult-onset AD in themselves and their family members.
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Affiliation(s)
- C H Lee
- Department of Dermatology, Kaohsiung Municipal Hsiao-Kang Hospital, Taiwan
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Wei J, Yang HS, Tsai SK, Hsiung MC, Chang CY, Ou CH, Chang YC, Lee KC, Sue SH, Chou YP. Emergent bedside real-time three-dimensional transesophageal echocardiography in a patient with cardiac arrest following a caesarean section. European Journal of Echocardiography 2010; 12:E16. [DOI: 10.1093/ejechocard/jeq161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wang CM, Way TD, Chang YC, Yen NT, Hu CL, Nien PC, Jea YS, Chen LR, Kao JY. The origin of the white Roman goose. Biochem Genet 2010; 48:938-43. [PMID: 20820906 DOI: 10.1007/s10528-010-9374-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Accepted: 05/14/2010] [Indexed: 11/28/2022]
Abstract
In order to avoid interference from nuclear copies of mitochondrial DNA (numts), mtDNA of the white Roman goose (domestic goose) was extracted from liver mitochondria. The mtDNA control region was amplified using a long PCR strategy and then sequenced. Neighbor-joining, maximum parsimony, and maximum-likelihood approaches were implemented using the 1,177 bp mtDNA control region sequences to compute the phylogenetic relationships of the domestic goose with other geese. The resulting identity values for the white Roman geese were 99.1% (1,166/1,177) with western graylag geese and 98.8% (1,163/1,177) with eastern graylag geese. In molecular phylogenetic trees, the white Roman goose was grouped in the graylag lineage, indicating that the white Roman goose came from the graylag goose (Anser anser). Thus, the scientific name of the white Roman goose should be Anser anser 'White Roman.'
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Affiliation(s)
- C M Wang
- Institute of Biochemistry, National Chung Hsing University, Taichung, Taiwan.
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Wei J, Hsiung MC, Tsai SK, Ou CH, Chang CY, Chang YC, Lee KC, Sue SH, Chou YP. The routine use of live three-dimensional transesophageal echocardiography in mitral valve surgery: clinical experience. European Journal of Echocardiography 2009; 11:14-8. [DOI: 10.1093/ejechocard/jep173] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Liu YC, Huang CL, Wu PL, Chang YC, Huang CH, Lane HY. Lack of association between AKT1 variances versus clinical manifestations and social function in patients with schizophrenia. J Psychopharmacol 2009; 23:937-43. [PMID: 18635704 DOI: 10.1177/0269881108093840] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The elucidation of genotype-phenotype relationships in psychiatric research is at an early stage. V-akt murine thymoma viral oncogene homolog 1 (AKT1) is a serine/threonine kinase known as protein kinase B. Emerging studies have implicated the role of AKT1 in pathogenesis of schizophrenia; however, the findings have not been consistent. This study aims to examine the association of AKT1 polymorphisms with drug-free and post-treatment symptomatology and social function in patients with schizophrenia. One hundred and twenty newly hospitalised patients with acutely exacerbated schizophrenia who had never been treated by atypical antipsychotics were recruited. They received optimal treatment of risperidone for up to 42 days in the inpatient research unit. Clinical manifestations were monitored by Positive and Negative Syndrome Scale (PANSS) and social function by Nurses' Observation Scale for Inpatients Evaluation (NOSIE). Patients were genotyped for eight AKT1 Single Nucleotide Polymorphism (SNPs), which have been previously investigated for association with schizophrenia. At drug-free status and after best possible treatment of risperidone, genotypes of each SNP did not influence performances in NOSIE, PANSS-total, -positive, -negative and -general psychopathology profiles. These results suggest that AKT1 does not play a significant role in clinical and functional manifestations in patients with schizophrenia who receive risperidone treatment. Future research should also focus on the relationships between genotypes of other susceptibility genes and phenotypes or functional outcomes of schizophrenia.
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Affiliation(s)
- Y C Liu
- Department of Psychiatry, Shinyin Hospital, Department of Health, Executive Yuan, Tainan, Taiwan
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Lee CH, Wen ZH, Chang YC, Huang SY, Tang CC, Chen WF, Hsieh SP, Hsieh CS, Jean YH. Intra-articular magnesium sulfate (MgSO4) reduces experimental osteoarthritis and nociception: association with attenuation of N-methyl-D-aspartate (NMDA) receptor subunit 1 phosphorylation and apoptosis in rat chondrocytes. Osteoarthritis Cartilage 2009; 17:1485-93. [PMID: 19490963 DOI: 10.1016/j.joca.2009.05.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 04/03/2009] [Accepted: 05/04/2009] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To study the effects of intra-articular injection of magnesium sulfate (MgSO(4)) on the development of osteoarthritis (OA) and to examine concomitant changes in the nociceptive behavior of rats. METHODS OA was induced in Wistar rats with intra-articular injection of collagenase (500 U) in the right knee; the left knee was left untreated. In the OA+MgSO(4) group (n=7), the treated knee was injected with 500-microg (0.1-ml) MgSO(4) twice a week for 5 consecutive weeks starting at 1 week after collagenase injection; in the OA group (n=7), the same knee was injected with the same amount of physiological normal saline. In the MgSO(4) group (n=6), naïve rats received only MgSO(4) injections; in the control group (n=6), naïve rats received only physiological normal saline injections. Nociceptive behavior (mechanical allodynia and thermal hyperalgesia) on OA development was measured before and at 1, 2, 4, 6, and 8 weeks after collagenase injection, following which the animals were sacrificed. Gross morphology and histopathology were examined in the femoral condyles, tibial plateau, and synovia. Immunohistochemical analysis was performed to examine the effect of MgSO(4) on N-methyl-D-aspartate (NMDA) receptor subunit 1 phosphorylation (p-NR1) and apoptosis in the articular cartilage chondrocytes. RESULTS OA rats receiving intra-articular MgSO(4) injections showed a significantly lower degree of cartilage degeneration than the rats receiving saline injections. MgSO(4) treatment also suppressed synovitis. Mechanical allodynia and thermal hyperalgesia showed significant improvement in the OA+MgSO(4) group as compared to the OA group. Moreover, MgSO(4) attenuated p-NR1 and chondrocyte apoptosis in OA-affected cartilage. CONCLUSIONS Our results indicate that local intra-articular administration of MgSO(4) following collagenase injection in an experimental rat OA model (1) modulates chondrocyte metabolism through inhibition of cell NMDA receptor phosphorylation and apoptosis, (2) attenuates the development of OA, and (3) concomitantly reduces nociception.
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Affiliation(s)
- C H Lee
- Department of Orthopedics and Traumatology, Taipei Medical University Hospital, Taipei, Taiwan
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Chang YC, Lin JW, Wang LC, Chen HM, Hwang JJ, Chuang LM. Association of intraocular pressure with the metabolic syndrome and novel cardiometabolic risk factors. Eye (Lond) 2009; 24:1037-43. [PMID: 19816514 DOI: 10.1038/eye.2009.247] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Wang Y, Samuels JF, Chang YC, Grados MA, Greenberg BD, Knowles JA, McCracken JT, Rauch SL, Murphy DL, Rasmussen SA, Cullen B, Hoehn-Saric R, Pinto A, Fyer AJ, Piacentini J, Pauls DL, Bienvenu OJ, Riddle M, Shugart YY, Liang KY, Nestadt G. Gender differences in genetic linkage and association on 11p15 in obsessive-compulsive disorder families. Am J Med Genet B Neuropsychiatr Genet 2009; 150B:33-40. [PMID: 18425788 DOI: 10.1002/ajmg.b.30760] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Several clinical and genetic studies have reported gender differences in obsessive-compulsive disorder (OCD). Previously, we conducted a linkage genome scan using multipoint allele-sharing methods to test for linkage in 219 families participating in the OCD Collaborative Genetics Study. When these families were stratified by proband's gender, suggestive linkage to chromosome 11p15 at marker D11S2362 (KAC(all) = 2.92, P = 0.00012) was detected in families with male probands, but not in the ones with female probands. We have since conducted fine mapping with a denser microsatellite marker panel in the region of 11p15, and detected a significant linkage signal at D11S4146 (KAC(all) = 5.08, P < 0.00001) in the families of male probands. Subsequently, 632 SNPs were genotyped spanning a 4.0 Mb region of the 1 LOD unit interval surrounding the linkage peak in the original families and an additional 165 families. Six SNPs were associated with OCD (P < 0.001): two SNPs were identified when all the families were included, and four SNPs only in male proband families. No SNP showed significant association with the OCD phenotype only in the families with a female proband. The results suggest a possible gender effect in the etiology of OCD.
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Affiliation(s)
- Y Wang
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA
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Abstract
BACKGROUND Chang's needle is a straight, 18-gauge stainless steel needle with a hook near its top to catch the thread and can be used for various hepatic resections. Since its introduction in 1996, accumulated experience has shown that using Chang's needle is simple and safe. We recently explored a new application for the needle with an intrahepatic vascular block during hepatic resections. METHODS Using Chang's needle makes whole-thickness interlocking sutures of the liver possible. One or two rows of multiple sutures secure the inflow and backflow while allowing a hepatic parenchymal division with less blood loss. Under ultrasound guidance, single temporary sutures can be made in the respective branches of the Glisson sheath to block inflow, and, on the right or left hepatic vein, to block backflow as well. RESULTS We did 89 hepatic resections without specifically aimed inflow or backflow blocks, including 12 right lobectomies, three trisegmentectomies, 21 bisegmentectomies, and 15 segmentectomies. Twenty-seven patients had mild to severe liver cirrhosis. Specifically aimed inflow blocks for partial hepatic resections were done on the Glisson sheath (G) of segment 8 (two patients), segment 6 (one patient), and segment 3 (one patient). One patient with a G8 block had a concomitant backflow block of the right hepatic vein. Overall, there was no procedure-related mortality or hepatic failure. Ischemia and reperfusion induced liver function deterioration was minimal in the group with this kind of temporary vascular blocks. CONCLUSION In addition to hepatic resections, Chang's maneuver can be used for intrahepatic individual inflow or backflow blocks, or both, to minimize ischemic and reperfusion injuries.
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Affiliation(s)
- Y. C. Chang
- Department of Surgery, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - N. Nagasue
- Department of Surgery, Fukumitsu Hospital, KashihamaHigashiku FukuokaJapan
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Yang WC, Wang CW, Wang JC, Chang YC, Hsu HC, Nee TE, Chen LJ, He JH. Aligned Er-doped ZnO nanorod arrays with enhanced 1.54 microm infrared emission. J Nanosci Nanotechnol 2008; 8:3363-3368. [PMID: 19051881 DOI: 10.1166/jnn.2008.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Vertically aligned Er-doped ZnO nanorod arrays with sharp and intense 1.54 microm infrared emission have been fabricated on Si substrates through a well controlled spin-coating and annealing process. The synthesis method is advantageous for synthesizing ZnO nanostructures free from structural defects, capability for large-scale production, minimum equipment requirement and product homogeneity. Er atoms were found to incorporate into ZnO lattice from XRD, ESCA, TEM, STEM/EDS and PL measurements. The single-crystal Er-doped nanorods maintained their high microstructural quality after annealing for 4 hr at 800 degreesC. The intensity of 1.54 microm infrared emission was found to be correlated with the deep level green emission. The enhanced luminescence intensity and best ever narrow wavelength distribution of Er-doped ZnO nanorod arrays at 1.54 microm emission will be conductive to applications in optoelectronic devices and optical communications.
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Affiliation(s)
- W C Yang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 300 Taiwan, Republic of China
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Chiu CH, Yu P, Kuo HC, Chen CC, Lu TC, Wang SC, Hsu SH, Cheng YJ, Chang YC. Broadband and omnidirectional antireflection employing disordered GaN nanopillars. Opt Express 2008; 16:8748-8754. [PMID: 18545588 DOI: 10.1364/oe.16.008748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Disordered GaN nanopillars of three different heights: 300, 550, and 720 nm are fabricated, and demonstrate broad angular and spectral antireflective characteristics, up to an incident angle of 60? and for the wavelength range of lambda=300-1800 nm. An algorithm based on a rigorous coupled-wave analysis (RCWA) method is developed to investigate the correlations between the reflective characteristics and the structural properties of the nanopillars. The broadband and omnidirectional antireflection arises mainly from the refractive-index gradient provided by nanopillars. Calculations show excellent agreement with the measured reflectivities for both s- and p- polarizations.
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Affiliation(s)
- C H Chiu
- Department of Photonics and Institute of Electro-Optical Engineering, National Chiao-Tung University, Hsinchu, Taiwan, R.O.C
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Tsai HY, Chang YC, Tyan YS. SU-GG-I-44: Real-Time Dose Measurements of Automatic Tube Current Modulation in Multislice CT. Med Phys 2008. [DOI: 10.1118/1.2961442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lin CC, Tsai YL, Li UM, Chang YC, Lin CP, Jeng JH. Horizontal/oblique root fractures in the palatal root of maxillary molars with associated periodontal destruction: case reports. Int Endod J 2008; 41:442-7. [DOI: 10.1111/j.1365-2591.2007.01360.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wu CW, Chang YC. A Hypothesis Testing Procedure on Assessing Process Performance for Asymmetric Tolerances. COMMUN STAT-THEOR M 2008. [DOI: 10.1080/03610920701813268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chang YC, Kikuchi S, Kawauchi N, Sato T, Takamizawa K. Complete dechlorination of tetrachloroethylene by use of an anaerobic Clostridium bifermentans DPH-1 and zero-valent iron. Environ Technol 2008; 29:381-391. [PMID: 18619143 DOI: 10.1080/09593330801984050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A laboratory test was conducted to examine the combined effect of an anaerobic Clostridium bifermentans DPH-1 and addition of zero-valent iron (Fe0) on the reductive dechlorination of tetrachloroethylene (PCE). In addition, the dechlorination of cis-1,2-dichloroethylene (cDCE) produced from PCE was examined using Fe0. The cDCE produced was completely dechlorinated to non-toxic end products, mostly, ethylene by a subsequent chemical reductive process. Production of ethylene was dramatically increased with increase of initial cDCE concentration in the range of 10.3 microM to 928 microM (1.0-90 mg l(-1)) and the velocity constant was calculated to be 0.38 day(-1). On the other hand, the combined use of strain DPH-1 and Fe0 showed the most significant effect on the initial PCE dechlorination, but cohesion of Fe0 was found to inhibit the dechlorination rate of PCE. It is thought that phosphoric acid iron contained in a medium forms film on the surface of iron particle, so oxidation of iron is inhibited.
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Affiliation(s)
- Y C Chang
- Department of Applied Chemistry, Muroran Institute of Technology, Muroran 050-8585, Japan
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Chao AS, Chao A, Wang TH, Chang YC, Chang YL, Hsieh CC, Lien R, Su WJ. Outcome of antenatally diagnosed cardiac rhabdomyoma: case series and a meta-analysis. Ultrasound Obstet Gynecol 2008; 31:289-295. [PMID: 18307215 DOI: 10.1002/uog.5264] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVES Rhabdomyoma, the most common primary fetal cardiac tumor, is often associated with tuberous sclerosis (TS). We aimed to evaluate outcome in cases diagnosed with fetal cardiac rhabdomyoma. METHODS This study presents 11 cases with fetal cardiac rhabdomyoma. In addition, all relevant published cases of antenatally diagnosed cardiac rhabdomyoma since 1982 were identified from MEDLINE. We evaluated the following risk factors associated with clinical impact and perinatal outcome: family history of TS, gestational age at diagnosis, tumor size, site and number of tumors, tumor progression, and associated intracardiac and extracardiac anomalies. RESULTS In this meta-analysis, 138 cases, including nine newly added by us, were categorized into Group A (107 live babies) and Group B (16 neonatal deaths and 15 intrauterine fetal deaths). Univariate analysis showed that large cardiac tumors (P < 0.0001), fetal dysrhythmia (P < 0.0001) and hydrops (P < 0.0001) were strong predictors of neonatal outcome. Tumor size >or= 20 mm (relative risk (RR), 20.6; 95% CI, 2.2-195.9; P = 0.009) and fetal dysrhythmia (RR, 13.6; 95% CI, 2.9-62.3; P = 0.001) were significantly associated with neonatal morbidity. TS, present in 85/133 (63.9%) cases, was significantly associated with multiple cardiac tumors (P < 0.0001) and family history of TS (P = 0.02). CONCLUSIONS Large tumor size and hydrops are significantly associated with poor neonatal outcome, whereas family history of TS and multiple fetal cardiac tumors are associated with TS. Any sonographic detection of a fetal cardiac tumor should warrant further investigation for the possible presence of associated disorders.
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Affiliation(s)
- A S Chao
- Department of Obstetrics and Gynecology, Chang-Gung Memorial Hospital and Chang Gung University, Tao-Yuan, Taiwan.
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Yu YH, Hsu WH, Hsu NY, Chang YC, Tsai PP, Tseng GC, Sun SS, Chiui YF. Comparison of two-phase (201)Tl SPECT with chest CT to differentiate thoracic malignancies from benign lesions. Q J Nucl Med Mol Imaging 2008; 52:66-73. [PMID: 18235422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
AIM This study was conducted to compare the performance of (201)Tl single photon emission computed tomography ((201)Tl SPECT) with chest computed tomography (CT) in differentiating thoracic malignancies from benign lesions. METHODS One hundred and seventy patients with confirmed diagnostic thoracic lesions found in chest radiographs were prospectively examined by (201)Tl SPECT. The performance of (201)Tl SPECT in differentiating thoracic malignancies from benign lesions was evaluated in 161 patients with a measurable retention index (RI), using the region-of-interest method. Chest CT scans were retrospectively collected from 165 patients and were interpreted by two independent observers. RESULTS The areas under the receiver operating characteristics curves were 0.85 using the RI value to differentiate thoracic malignancies from benign lesions. The sensitivity, specificity, and accuracy were 71.9%, 83.1%, and 76.4%, respectively, with a cutoff level for the RI set at 20%. Similarly, the sensitivity, specificity and accuracy of chest CT scans to differentiate malignancies from benign lesions were 78.2%, 69.7% and 74.9%, respectively. Focusing on patients with concordant results in both (201)Tl SPECT and chest CT scans, we can differentiate thoracic malignancies from benign lesions with a sensitivity of 89.1%, a specificity of 90%, and an accuracy of 89.4%. CONCLUSION Both (201)Tl SPECT and chest CT scans are useful imaging tools in differentiating thoracic malignancies from benign lesions, with an accuracy of around 75%. By combining these two image modalities, the accuracy improves to 89.4%, which may circumvent the need for invasive procedures for certain equivocal cases, using either single image alone.
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Affiliation(s)
- Y H Yu
- Department of Medicine, China Medical University Hospital Taichung, Taiwan
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Chen YH, Chang YC, Lin CH, Chung TY. Diode-pumped, actively internal-Q-switched Nd:MgO:PPLN laser. Opt Express 2008; 16:2048-2055. [PMID: 18542284 DOI: 10.1364/oe.16.002048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrated a laser-diode-pumped, electro-optically internal-Q-switched laser system radiating at 1.085 mum fabricated using a periodically poled Nd:MgO:LiNbO3 (Nd:MgO:PPLN) crystal. The Nd:MgO:PPLN is 17-mm long and has a 12-mm long, 13.6-mum period polarization-mode quasi-phase-matching (PM QPM) grating section functioning as the Q-switch of the laser system. When the Nd:MgO:PPLN Q-switch was driven by a 260-V voltage pulse train at 5 kHz, we obtained laser pulses of pulse energy >2.45 muJ and a pulse width of ~28 ns, corresponding to a laser peak power of ~88 W, from this internal-Q-switched laser system with 2% output coupling at an absorbed diode pump power of 0.61 W.
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Affiliation(s)
- Y H Chen
- Department of Optics and Photonics, National Central University, Jhongli 320, Taiwan.
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Chang YC, Chu JY, Wang TJ, Lin MW, Yeh JT, Wang JK. Fourier analysis of surface plasmon waves launched from single nanohole and nanohole arrays: unraveling tip-induced effects. Opt Express 2008; 16:740-747. [PMID: 18542150 DOI: 10.1364/oe.16.000740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The authors report the investigation of surface plasmon waves (SPW) generated by single nanohole and nanohole arrays. Scattering-type scanning near-field microscopy is used to directly observe near-field distribution. The images after Fourier transformation display characteristic patterns that match with the derived analytic formula. The correspondence helps to identify the role of the scanning tip in generating SPW, making possible of the removal of this tip-induced effect. This study provides a means to perform in-depth investigation on surface plasmon polaritons.
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Affiliation(s)
- Y C Chang
- Material Research Laboratory, Industrial Technology Research Institute, Hsinchu 31040, Taiwan, ROC.
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Freeman LEB, Blair A, Ahonen EQ, Porthe V, Benavides FG, Benach J, Hazarika R, Baldi I, Lebailly P, Barrau M, Bouchart V, Lecluse Y, Garrigou A, Chang YC, Lu JL, Schmeisser N, Mester B, Ahrens W, Lebailly P, Niez E, Baldi I, Leveque N, Meyer C, Commitee A. Agriculture 2. Occup Environ Med 2007. [DOI: 10.1136/oem.64.12.e43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chang CK, Lin DZ, Chang YC, Lin MW, Yeh JT, Liu JM, Yeh CS, Lee CK. Enhancing intensity of emitted light from a ring by incorporating a circular groove. Opt Express 2007; 15:15029-15034. [PMID: 19550784 DOI: 10.1364/oe.15.015029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We fabricated a ring containing a single circular groove (RCG) on silver film and which was supported on a glass substrate. We found that by changing the mean radius of the circular groove, the light intensity emitted from the RCG can be modulated by using the scattering light from the circular groove. In addition, we also fabricated circular grooves with the same depth but of different widths so that we could examine the scattering light behavior of the grooves. Herein, we propose a theoretical model which takes into account the amplitude modulation of the cylindrical waves. Our results showed that our proposed model agreed well with the experimental results.
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Hsieh CH, Leu YS, Chang YF, Tai HC, Huang MZ, Hsiao HT, Chang YC, Chen YJ. The role of intensity modulated radiation therapy for locally advanced hypopharyngeal cancer after resection and ileocolic free flap reconstruction. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.16521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
16521 Background: To estimate the toxicity/efficacy of concurrent chemoradiation therapy (CCRT) and with different modalities for locally advanced hypopharyngeal carcinoma post ileocolic free flap reconstruction (ICFR). Methods: Between April 2003 and December 2006, 15 patients had enrolled and a total of 13 patients were treated for locally advanced hypopharyeal cancer after resection and ICFR. The majority in group was stage IVa and all were squamous cell histology. Five were treated with intensity modulated radiation therapy (IMRT)/chemotherapy (CT) and 8 were treated with the conventional radiotherapy (CRT)/CT, both to a median dose of 64.8 Gy. Two to three cycles of CT given concurrent with RT every 3 or 4 weeks of cisplatin, 15 mg/m2 i.v., D1–5, plus 5-FU, 750 mg/m2 continue infusion, D1–5. Two same regiment of CT had applied monthly after CCRT one month latter for all. Results: The mean survival was 33 months (range, 6–42 months). Two-year actuarial overall survival (OS), disease-free (DFS), locoregional progression-free (LRPF) and distant- metastases-free (DMF) rates of all were 74%, 67%, 83%, 83%, respectively. Comparing the IMRT and CRT group, two-year OS, DFS, LRP and DM rates were 67% vs. 62%, 75% vs. 63%, 75% vs. 87%, 100% vs. 75%, respectively. Except OS rate (p = 0.04), others were not statistically significant. In IMRT group, one left side lower neck failure was noted. In CRT group, one over flap and the other over level III of neck recurrent was noted. Speech ability above 70% in IMRT vs. CRT group were 4/5 (80%) vs. 4/8 (50%). Swallowing with solid diet in IMRT vs. CRT group were 3/5 (60%) vs.3/8 (37.5%). Grade III of dermatitis and mucositis for IMRT vs. CRT group were 40% vs. 100% and 20% vs. 87.5%. The median duration of post surgery to start CCRT and of CCRT were 33 days and 54 days. The interval from post-operation to start CCRT and of CCRT longer than median time would influence LRPF rate (p = 0.05). Conclusions: For locally advanced hypopharyngeal carcinoma post ICFR, IMRT results in lower toxicity, better speech, swallowing ability and superior treatment outcomes when compared with the CRT group. Prolong starting CCRT and extend CCRT time influence LRPF rate. No significant financial relationships to disclose.
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Affiliation(s)
| | - Y. S. Leu
- Mackay Memorial Hospital, Taipei, Taiwan
| | | | - H. C. Tai
- Mackay Memorial Hospital, Taipei, Taiwan
| | | | | | | | - Y. J. Chen
- Mackay Memorial Hospital, Taipei, Taiwan
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