141 results on '"Cheng, Hao-Wen"'
Search Results
102. Hydrogen plasma-treated MoSe2 nanosheets enhance the efficiency and stability of organic photovoltaics.
- Author
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Wang, Hao-Cheng, Lin, Yu-Che, Chen, Chung-Hao, Huang, Chi-Hsien, Chang, Bin, Liu, Yi-Ling, Cheng, Hao-Wen, Tsao, Cheng-Si, and Wei, Kung-Hwa
- Published
- 2019
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103. Particle swarm optimization based space debris surveillance network scheduling
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Jiang, Hai, primary, Liu, Jing, additional, Cheng, Hao-Wen, additional, and Zhang, Yao, additional
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- 2017
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104. Evaluation of Clinical Application and Dosimetric Comparison of Treatment Plans of Gamma Knife and CyberKnife in Treating Arteriovenous Malformations
- Author
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Kuo, Chun-Yuan, primary, Tsai, Yi-Chieh, additional, Shiau, An-Cheng, additional, Cheng, Hao-Wen, additional, Yu, Hsiao-Wei, additional, Su, Yu-Kai, additional, and Tsai, Jo-Ting, additional
- Published
- 2017
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105. Web Application Security: Threats, Countermeasures, and Pitfalls
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Huang, Hsiu-Chuan, primary, Zhang, Zhi-Kai, additional, Cheng, Hao-Wen, additional, and Shieh, Shiuhpyng Winston, additional
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- 2017
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106. The virus causing passionfruit woodiness disease in Taiwan is reclassified as <italic>East Asian passiflora virus</italic>.
- Author
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Chong, Yee-Hang, Cheng, Ying-Huey, Cheng, Hao-Wen, Huang, Ying-Chih, and Yeh, Shyi-Dong
- Subjects
PASSION fruit ,POTYVIRUS diseases ,VIRUS diseases of plants ,HOMOLOGY (Biology) ,NUCLEOTIDES - Abstract
Based on filamentous particles, aphid transmission, and symptoms of distorted, size-reduced, woody fruits, the major potyvirus associated with passionfruit woodiness disease (PWD) in Taiwan has been regarded as
Passionfruit woodiness virus (PWV) for decades. In this study, the genomes of four potyvirus isolates, originally collected from orchards with PWD in Taiwan and re-designated as Poty-TW, Poty-0920-6, Poty-dpd and Poty-pt, were sequenced for molecular characterization. Our results revealed that the CP genes of Poty-TW and Poty-0920-6 share nucleotide (nt) identities/amino acid (aa) identities of 97.7/95.9 and 98.5/97.2%, respectively, with that ofEast Asian passiflora virus (EAPV) isolate AO of Japan, and the CP genes of Poty-dpd and Poty-pt share nt/aa identities of 95.3/96.2 and 94.9/97.6% respectively, with that of EAPV isolate IB of Japan. The genomic sequences of PWD-associate viruses in Taiwan also share high degrees of homology with that of EAPV-AO (TW and 0920-6 isolates > 98%) and EAPV-IB (dpd and pt isolates > 88%). However, the CP genes of four PWD-associated viruses from Taiwan share only 67.6-69.4% nt identities with that of PWV Australia MU isolate, does not satisfy the ICTV criteria (> 76%) to be regarded as a strain of PWV. A field survey with 175 samples from different areas of Taiwan demonstrated that the PWD-associated potyvirus is mainly caused by EAPV. Hence, our results indicate that the major potyvirus causing PWD in Taiwan should be reclassified as EAPV. [ABSTRACT FROM AUTHOR]- Published
- 2018
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107. Lysophosphatidic acid induces erythropoiesis through activating lysophosphatidic acid receptor 3
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Swey-Shen Alex Chen, Shyh-Jye Lee, Shiaw-Min Hwang, Chi-Ling Chiang, Ku-Chi Tsao, Hsinyu Lee, Chao-Ling Yao, Cheng-Hao Wen, and Pei-Lun Chu
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medicine.medical_specialty ,Embryo, Nonmammalian ,Biology ,chemistry.chemical_compound ,Downregulation and upregulation ,Antigens, CD ,Internal medicine ,Lysophosphatidic acid ,medicine ,Animals ,Humans ,Erythropoiesis ,AC133 Antigen ,Receptors, Lysophosphatidic Acid ,Receptor ,Protein kinase B ,Cells, Cultured ,Zebrafish ,Glycoproteins ,Cell Biology ,Lipid signaling ,Isoxazoles ,Flow Cytometry ,Hematopoietic Stem Cells ,Cell biology ,Endocrinology ,chemistry ,Erythropoietin ,Molecular Medicine ,lipids (amino acids, peptides, and proteins) ,Lysophosphatidic Acid Receptor 3 ,Lysophospholipids ,Propionates ,Peptides ,Developmental Biology ,medicine.drug - Abstract
Lysophosphatidic acid (LPA), an extracellular lipid mediator, exerts multiple bioactivities through activating G protein-coupled receptors. LPA receptor 3 (LPA3) is a member of the endothelial differentiation gene family, which regulates differentiation and development of the circulation system. However, the relationship among the LPA receptors (LPARs) and erythropoiesis is still not clear. In this study, we found that erythroblasts expressed both LPA1 and LPA3, and erythropoietic defects were observed in zLPA3 antisense morpholino oligonucleotide-injected zebrafish embryos. In human model, our results showed that LPA enhanced the erythropoiesis in the cord blood-derived human hematopoietic stem cells (hHSCs) with erythropoietin (EPO) addition in the plasma-free culture. When hHSCs were treated with Ki16425, an antagonist of LPA1 and LPA3, erythropoietic process of hHSCs was also blocked, as detected by mRNA and protein expressions of CD71 and GlyA. In the knockdown study, we further demonstrated that specific knockdown of LPA3, not LPA1, blocked the erythropoiesis. The translocation of β-catenin into the nucleus, a downstream response of LPAR activation, was blocked by Ki16425 treatment. In addition, upregulation of erythropoiesis by LPA was also blocked by quercetin, an inhibitor of the β-catenin/T-cell factor pathway. Furthermore, the enhancement of LPA on erythropoiesis was diminished by blocking c-Jun-activated kinase/signal transducer and activator of transcription and phosphatidylinositol 3-kinase/AKT activation, the downstream signaling pathways of EPO receptor, suggested that LPA might play a synergistic role with EPO to regulate erythropoietic process. In conclusion, we first reported that LPA participates in EPO-dependent erythropoiesis through activating LPA3.
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- 2011
108. Evaluation Model of Detected Ability for Ground-based Electro-optic Telescope to Space Debris
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HU Jing-jing, 胡静静, primary, LIU Jing, 刘静, additional, CUI Shuang-xing, 崔双星, additional, ZHANG Yao, 张耀, additional, CHENG Hao-wen, 程昊文, additional, and WU Xiang-bin, 吴相彬, additional
- Published
- 2016
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109. Prim-SNPing: a primer designer for cost-effective SNP genotyping
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Li-Yeh Chuang, Cheng-Hong Yang, Yu-Chen Hung, Hsueh-Wei Chang, De-Leung Gu, Cheng-Hao Wen, and Yu-Huei Cheng
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Genetics ,dbSNP ,Base Sequence ,Genotype ,Cost-Benefit Analysis ,Molecular Sequence Data ,Computational Biology ,Single-nucleotide polymorphism ,Biology ,Polymorphism, Single Nucleotide ,General Biochemistry, Genetics and Molecular Biology ,Amplicon Size ,SNP genotyping ,Rats ,Restriction site ,Restriction enzyme ,Mice ,Genetic Techniques ,Animals ,Humans ,Restriction fragment length polymorphism ,Genotyping ,Software ,Biotechnology ,DNA Primers - Abstract
Many kinds of primer design (PD) software tools have been developed, but most of them lack a single nucleotide polymorphism (SNP) genotyping service. Here, we introduce the web-based freeware “Prim-SNPing,” which, in addition to general PD, provides three kinds of primer design functions for cost-effective SNP genotyping: natural PD, mutagenic PD, and confronting two-pair primers (CTPP) PD. The natural PD and mutagenic PD provide primers and restriction enzyme mining for polymerase chain reaction–restriction fragment of length polymorphism (PCR-RFLP), while CTPP PD provides primers for restriction enzyme–free SNP genotyping. The PCR specificity and efficiency of the designed primers are improved by BLAST searching and evaluating secondary structure (such as GC clamps, dimers, and hairpins), respectively. The length pattern of PCR-RFLP using natural PD is user-adjustable, and the restriction sites of the RFLP enzymes provided by Prim-SNPing are confirmed to be absent within the generated PCR product. In CTPP PD, the need for a separate digestion step in RFLP is eliminated, thus making it faster and cheaper. The output of Prim-SNPing includes the primer list, melting temperature (Tm) value, GC percentage, and amplicon size with enzyme digestion information. The reference SNP (refSNP, or rs) clusters from the Single Nucleotide Polymorphism database (dbSNP) at the National Center for Biotechnology Information (NCBI), and multiple other formats of human, mouse, and rat SNP sequences are acceptable input. In summary, Prim-SNPing provides interactive, user-friendly and cost-effective primer design for SNP genotyping. It is freely available at http://bio.kuas.edu.tw/prim-snping .
- Published
- 2009
110. Restriction enzyme mining for SNPs in genomes
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Li-Yeh, Chuang, Cheng-Hong, Yang, Ke-Hung, Tsui, Yu-Huei, Cheng, Phei-Lang, Chang, Cheng-Hao, Wen, and Hsueh-Wei, Chang
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Genome ,Genotype ,Restriction Mapping ,Animals ,Humans ,DNA Restriction Enzymes ,Polymerase Chain Reaction ,Polymorphism, Single Nucleotide ,Polymorphism, Restriction Fragment Length - Abstract
Many different single nucleotide polymorphisms (SNPs) genotyping methods have been developed recently. However, most of them are expensive. Using restriction enzymes for SNP genotyping is a cost-effective method. However, restriction enzyme mining for SNPs in a genome sequence is still challenging for researchers who do not have a background in genomics and bioinformatics. In this review, the basic bioinformatics tools used for restriction enzyme mining for SNP genotyping are summarized and described. The objectives of this paper include: i) the introduction of SNPs, genotyping and PCR-restriction fragment length polymorphism (RFLP); ii) a review of components for genotyping software, including tools for primer design only or restriction enzyme mining only; iii) a review of software providing the flanking sequence for primer design; iv) recent advances in PCR-RFLP tools and natural and mutagenic PCR-RFLP; v) highlighting the strategy for restriction enzyme mining for SNP genotyping; vi) a discussion of potential problems for multiple PCR-RFLP. The different implications for restriction enzymes on sense and antisense strands are also discussed. Our PCR-RFLP freeware, SNP-RFLPing, is included in this review to illustrate many characteristics of PCR-RFLP software design. Future developments will include further sophistication of PCR-RFLP software in order to provide better visualization and a more interactive environment for SNP genotyping and to integrate the software with other tools used in association studies.
- Published
- 2008
111. SNP ID-info: SNP ID searching and visualization platform
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Cheng-Hong Yang, Hsueh-Wei Chang, Yu-Huei Cheng, Li-Yeh Chuang, Phei-Lang Chang, and Cheng-Hao Wen
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Molecular Sequence Data ,Single-nucleotide polymorphism ,Biology ,Biochemistry ,Genome ,Polymorphism, Single Nucleotide ,User-Computer Interface ,Sequence Analysis, Protein ,Databases, Genetic ,Genetics ,SNP ,Animals ,Humans ,Molecular Biology ,Genetic association ,Contig ,Base Sequence ,Tag SNP ,SNP genotyping ,Identification (information) ,Molecular Medicine ,Sequence Alignment ,Algorithms ,Software ,Biotechnology - Abstract
Many association studies provide the relationship between single nucleotide polymorphisms (SNPs), diseases and cancers, without giving a SNP ID, however. Here, we developed the SNP ID-info freeware to provide the SNP IDs within inputting genetic and physical information of genomes. The program provides an "SNP-ePCR" function to generate the full-sequence using primers and template inputs. In "SNPosition," sequence from SNP-ePCR or direct input is fed to match the SNP IDs from SNP fasta-sequence. In "SNP search" and "SNP fasta" function, information of SNPs within the cytogenetic band, contig position, and keyword input are acceptable. Finally, the SNP ID neighboring environment for inputs is completely visualized in the order of contig position and marked with SNP and flanking hits. The SNP identification problems inherent in NCBI SNP BLAST are also avoided. In conclusion, the SNP ID-info provides a visualized SNP ID environment for multiple inputs and assists systematic SNP association studies. The server and user manual are available at http://bio.kuas.edu.tw/snpid-info.
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- 2008
112. SNP combinations in chromosome-wide genes are associated with bone mineral density in Taiwanese women
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Gau-Tyan, Lin, Hung-Fu, Tseng, Chen-Kang, Chang, Li-Yeh, Chuang, Chih-Shan, Liu, Cheng-Hong, Yang, Chung-Jui, Tu, Eng-Chi, Wang, Hsiu-Fen, Tan, Chia-Che, Chang, Cheng-Hao, Wen, Hsiang-Chi, Chen, and Hsueh-Wei, Chang
- Subjects
Adult ,Bone Density ,Chromosomes, Human, Pair 11 ,Age Factors ,Humans ,Osteoporosis ,Chromosomes, Human, Pair 6 ,Female ,Middle Aged ,Polymorphism, Single Nucleotide ,Linkage Disequilibrium ,Body Mass Index - Abstract
Osteoporosis is a major public health problem, mainly quantified by low BMD. Eleven polymorphisms were investigated in this study; TNFalpha-857 (rs1799724), TGFbeta1-509 (rs1800469), osteocalcin (rs1800247), TNFalpha-308 (rs1800629), PTH BstB I (rs6254), PTH Dra II (rs6256), IL-1ra (VNTR), HSP70 hom (rs2227956), HSP 70-2 (rs1061581), CTR (rs1801197), and BMP-4 (rs17563). The relationship between the combined polymorphisms in different genomic regions and BMD variation was investigated. Among the female subjects, the proportion of subjects with low BMD in low BMI group (or = 18.50) was significantly higher than that of the middle (18.51-22.99) and high (or = 23.00) BMI groups (P0.05). In post-menopausal women, there was a significant association between low BMD and genotypes ranging from 2 to approximately 7 SNPs. For two combined SNPs, the portion of subjects with low BMD was significantly higher in those with CC-AA genotypes in rs1799724-rs1800629, compared to those with non-CC-AA genotypes in post-menopausal women and the combination of all women. Similarly, part of the combined SNPs with rs1799724-rs1800629-rs6254-rs6256-IL-1ra-rs2227956-rs1801197 was significantly associated with reduced BMD. After controlling for age and BMI, post-menopausal women with certain specific SNP combination had a 3.54- to 4.68-fold increased risk for low BMD, comparing to other SNP combinations. In conclusion, our data suggest that several gene polymorphisms may be cooperatively involved in the development of osteoporosis.
- Published
- 2008
113. Combinational polymorphisms of four DNA repair genes XRCC1, XRCC2, XRCC3, and XRCC4 and their association with oral cancer in Taiwan
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Ching-Yu, Yen, Shyun-Yeu, Liu, Chung-Ho, Chen, Hung-Fu, Tseng, Li-Yeh, Chuang, Cheng-Hong, Yang, Ying-Chu, Lin, Cheng-Hao, Wen, Wei-Fan, Chiang, Chang-Hsuan, Ho, Hsiang-Chi, Chen, Shaio-Ting, Wang, Cheng-Wen, Lin, and Hsueh-Wei, Chang
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Adult ,Aged, 80 and over ,Male ,Chi-Square Distribution ,DNA Repair ,Taiwan ,Middle Aged ,Polymorphism, Single Nucleotide ,DNA-Binding Proteins ,Logistic Models ,X-ray Repair Cross Complementing Protein 1 ,Case-Control Studies ,Carcinoma, Squamous Cell ,Odds Ratio ,Humans ,Female ,Genetic Predisposition to Disease ,Mouth Neoplasms ,Aged ,Genes, Neoplasm - Abstract
Many single nucleotide polymorphisms (SNPs) have been found to be associated with oral cancer but the biological interactions through SNPs are seldom addressed. In this study, we focused on the joint effect for SNP combinations of four DNA repair genes, X-ray repair cross-complementing groups (XRCCs) 1-4, involved in major cancer-related pathways.Single nucleotide polymorphism genotyping was determined using by polymerase chain reaction-restriction fragment length polymorphism in this study (case = 103, control = 98). Different numbers of combinational SNPs with genotypes called the pseudo-haplotypes from these chromosome-wide genes were used to evaluate their joint effect on oral cancer risk.Except for XRCC2 rs2040639-AG, none of these SNPs was found to individually contribute to oral cancer risk. However, for two combined SNPs, the proportion of subjects with oral cancer was significantly higher in the pseudo-haplotype with AG-CC genotypes in rs2040639-rs861539 (XRCC2-XRCC3) compared with those with non-AG-CC genotypes. Similarly, the pseudo-haplotype of rs2040639-rs861539-rs2075685 (XRCC2-XRCC3-XRCC4) and rs2040639-rs861539-rs2075685-rs1799782 (XRCCs 1-4) with specific genotype pattern (AG-CC-TG and CT-AG-CC-TG) among three and four combinational SNPs were significantly associated with oral cancer. After controlling for age, gender, smoking, drinking, and betel nut chewing, the estimated odds ratio of oral cancer were 2.45, 5.03, and 10.10 for two, three and four specific SNP combinations, respectively, comparing these specific pseudo-haplotypes to their corresponding non-pseudo-haplotypes.We have identified the potential combined XRCCs 1-4 SNPs with genotypes that were associated with oral cancer risk and may have an impact on identification of a high-risk population.
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- 2008
114. Elucidating the Genomic and Proteomic Parameters for Restenotic Patients
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Chieh Hsi Wu, Jing-Ru Weng, and Cheng-Hao Wen
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Genetics ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2008
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115. Upregulation of matrix metalloproteinase-9 and tissue inhibitors of metalloproteinases in rapid atrial pacing-induced atrial fibrillation
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Ling Ping Lai, Chih-Sheng Lin, Chia Wei Liu, Wen Chi Chen, Shoei K. Stephen Huang, Jiunn Lee Lin, Cheng Hao Wen, Chien Lung Chen, and Shao Chuan Lai
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medicine.medical_specialty ,Time Factors ,Swine ,Matrix metalloproteinase ,Extracellular matrix ,Pathogenesis ,Transforming Growth Factor beta1 ,Downregulation and upregulation ,In vivo ,Internal medicine ,Atrial Fibrillation ,medicine ,Gelatinase ,Animals ,Humans ,Sinus rhythm ,Heart Atria ,RNA, Messenger ,Molecular Biology ,Tissue Inhibitor of Metalloproteinase-3 ,Tissue Inhibitor of Metalloproteinase-1 ,Chemistry ,Atrial fibrillation ,medicine.disease ,Extracellular Matrix ,Up-Regulation ,Endocrinology ,Matrix Metalloproteinase 9 ,Cardiology and Cardiovascular Medicine - Abstract
Remodeling of atrial extracellular matrix (ECM) in atrial fibrillation (AF) involves changes in the expression of matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs). The contributions of MMPs and TIMPs to the pathogenesis of AF development have not been clearly defined. This study evaluated the in situ activity and expression of gelatinases (MMP-2 and MMP-9) and their relationship with TIMP-1 or TIMP-3 in atria undergoing rapid atrial pacing for the induction of AF (4 weeks' pacing followed by 2 weeks of maintained AF) in pigs. In AF atria, in situ gelatinase activity was mainly localized in the interstitium of atrial myocardium, and was significantly larger than that of sinus rhythm control (i.e., sham control). The significant increase of MMP-9 in its pro-form and mRNA level, but not MMP-2, was shown to be responsible for the increased gelatinase activity in atria with AF. The inhibitory activities of glycosylated TIMP-1 and TIMP-3, but not TIMP-2, in AF tissues were markedly elevated and also localized in the atrial interstitium. TIMP-1 was found to be mostly colocalized with gelatinase activity over the AF tissues, implying the coexistence of gelatinase activity and TIMP-1, but TIMP-3 appeared only partially colocalized and discontinued the gelatinase activity surrounding the cardiomyocytes. TIMP-1 and TIMP-3 may play differential roles in the inhibition of gelatinase activity in vivo. Together with the survey of several MMPs transcripts and the level of transforming growth factor-beta1 (TGF-beta1), we proposed that the increased activity of gelatinase (i.e., MMP-9), TIMP-1 and TIMP-3 and their interaction may contribute to atrial ECM remodeling of AF.
- Published
- 2008
116. Evaluation Model of Detected Ability for Ground-based Electro-optic Telescope to Space Debris
- Author
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刘静 Liu Jing, 崔双星 Cui Shuang-xing, 程昊文 Cheng Hao-wen, 胡静静 Hu Jing-jing, 张耀 Zhang Yao, and 吴相彬 Wu Xiang-bin
- Subjects
Telescope ,law ,Astronomy ,Atomic and Molecular Physics, and Optics ,Geology ,Remote sensing ,law.invention ,Space debris - Published
- 2016
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117. An improved PCR method for gender identification of eagles
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Ta-Ching Chou, De-Leung Gu, Chien-Chung Cheng, Li-Yeh Chuang, Yii-Cheng Chou, Kock-Yee Tan, Hsueh-Wei Chang, Chun-An Cheng, Cheng-Te Yao, Cheng-Hao Wen, and Chia-Che Chang
- Subjects
Genetics ,Sex Determination Analysis ,Base Sequence ,Eagles ,Pcr cloning ,Molecular Sequence Data ,Cell Biology ,Sequence Analysis, DNA ,Biology ,biology.organism_classification ,Spilornis cheela ,Polymerase Chain Reaction ,DNA sequencing ,Falconiformes ,law.invention ,Species Specificity ,law ,Hoya ,Animals ,Identification (biology) ,cardiovascular diseases ,Pcr method ,Molecular Biology ,Polymerase chain reaction ,DNA Primers - Abstract
Eagles are sexually monomorphic and therefore it is difficult to determine their gender, which is a crucial need for management purposes. In this study, we have developed an improved gender identification method by exploiting length differences between the Chromo-Helicase-DNA binding protein (CHD)-Z and CHD-W genes of Spilornis cheela hoya. By comparing DNA sequences for CHD-W and CHD-Z from 10 species of Falconiformes eagles we designed universal gender identification PCR primers that exploit differences in product size. Standard agarose gels were shown to easily distinguish between the 148-bp CHD-ZW and the 258-bp CHD-W PCR products. When used with 28 samples of S. cheela hoya, our improved universal primers provided a fast and precise gender identification assay.
- Published
- 2007
118. Isolation and identification of mesenchymal stem cells from human lipoma tissue
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An-Pei Kao, Sin-Daw Lin, Chung-Sheng Lai, Tsai-Ming Lin, Chia-Cheng Chang, Cheng-Hao Wen, Kai-Hung Wang, and Hsueh-Wei Chang
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Pathology ,medicine.medical_specialty ,Biophysics ,Cell Culture Techniques ,Clinical uses of mesenchymal stem cells ,Biology ,Biochemistry ,Immunophenotyping ,Osteogenesis ,medicine ,Humans ,Cell Lineage ,Molecular Biology ,Stem cell transplantation for articular cartilage repair ,Cell Proliferation ,Induced stem cells ,Adipogenesis ,Mesenchymal stem cell ,Gap Junctions ,Amniotic stem cells ,Mesenchymal Stem Cells ,Cell Biology ,Amniotic epithelial cells ,Immunology ,Lipoma ,Stem cell ,Chondrogenesis ,Cell Division ,Adult stem cell - Abstract
Lipoma is a benign neoplasm of normal fat cells that appears as a soft, movable swelling, often with a slight yellowish coloration. Human mesenchymal stem cells (MSCs) that have been isolated from bone marrow, blood, and other adult tissues including adipose tissue have the potential to be useful candidates for therapy. No literature had reported about stem cells from lipoma tissue. Here, a new cell culture method is described and utilized to greatly accelerate the growth rate and prolong the lifespan of lipoma-derived MSCs. Cells produced in early cultures display characteristics similar to those previously reported for multipotential stem cells, including a high frequency of anchorage-independent growth in soft agar and a lack of gap junctional intercellular communication in cell types with serpiginous morphology. These cells can differentiate into adipocytes, osteoblasts, and chondrocytes after induction. In conclusion, lipoma-derived stem cells possessing the characteristics of MSCs are described for the first time.
- Published
- 2007
119. ZeroMQ-based control system for optical telescope.
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Sun, Jian, Cheng, Hao-wen, Liu, Jing, and Jiang, Hai
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- 2022
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120. High-throughput avian molecular sexing by SYBR green-based real-time PCR combined with melting curve analysis
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San Hua Su, Cheng Te Yao, Chien-Chung Cheng, Chi Li Tsai, Ta Ching Chou, Yii Cheng Chou, De Leung Gu, Cheng Hao Wen, Hsueh-Wei Chang, Cheng Chun-An, and Chia Che Chang
- Subjects
Electrophoresis ,Male ,Sex Determination Analysis ,lcsh:Biotechnology ,Molecular Probe Techniques ,Sexing ,Diamines ,Biology ,Melting curve analysis ,law.invention ,Birds ,law ,lcsh:TP248.13-248.65 ,Primer dimer ,Hoya ,Animals ,Benzothiazoles ,cardiovascular diseases ,Organic Chemicals ,Polymerase chain reaction ,Genetics ,Sex Chromosomes ,Reverse Transcriptase Polymerase Chain Reaction ,Methodology Article ,DNA ,Sequence Analysis, DNA ,biology.organism_classification ,Molecular biology ,Reverse transcription polymerase chain reaction ,genomic DNA ,Real-time polymerase chain reaction ,Quinolines ,Female ,Biotechnology - Abstract
Background Combination of CHD (chromo-helicase-DNA binding protein)-specific polymerase chain reaction (PCR) with electrophoresis (PCR/electrophoresis) is the most common avian molecular sexing technique but it is lab-intensive and gel-required. Gender determination often fails when the difference in length between the PCR products of CHD-Z and CHD-W genes is too short to be resolved. Results Here, we are the first to introduce a PCR-melting curve analysis (PCR/MCA) to identify the gender of birds by genomic DNA, which is gel-free, quick, and inexpensive. Spilornis cheela hoya (S. c. hoya) and Pycnonotus sinensis (P. sinensis) were used to illustrate this novel molecular sexing technique. The difference in the length of CHD genes in S. c. hoya and P. sinensis is 13-, and 52-bp, respectively. Using Griffiths' P2/P8 primers, molecular sexing failed both in PCR/electrophoresis of S. c. hoya and in PCR/MCA of S. c. hoya and P. sinensis. In contrast, we redesigned sex-specific primers to yield 185- and 112-bp PCR products for the CHD-Z and CHD-W genes of S. c. hoya, respectively, using PCR/MCA. Using this specific primer set, at least 13 samples of S. c. hoya were examined simultaneously and the Tm peaks of CHD-Z and CHD-W PCR products were distinguished. Conclusion In this study, we introduced a high-throughput avian molecular sexing technique and successfully applied it to two species. This new method holds a great potential for use in high throughput sexing of other avian species, as well.
- Published
- 2008
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121. Seq-SNPing: Multiple-Alignment Tool for SNP Discovery, SNP ID Identification, and RFLP Genotyping.
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Hsueh-Wei Chang, Li-Yeh Chuang, Yu-Huei Cheng, Chang-Hsuan Ho, Cheng-Hao Wen, and Cheng-Hong Yang
- Published
- 2009
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122. Combinational Polymorphisms of Seven CXCL12-Related Genes Are Protective against Breast Cancer in Taiwan.
- Author
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Gau-Tyan Lin, Hung-Fu Tseng, Cheng-Hong Yang, Ming-Feng Hou, Li-Yeh Chuang, Hsiao-Ting Tai, Ming-Hong Tai, Yu-Huei Cheng, Cheng-Hao Wen, Chih-Shan Liu, Chih-Jen Huang, Chun-Lin Wang, and Hsueh-Wei Chang
- Published
- 2009
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123. SNP ID-info: SNP ID Searching and Visualization Platform.
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Cheng-Hong Yang, Li-Yeh Chuang, Yu-Huei Cheng, Cheng-Hao Wen, Phei-Lang Chang, and Hsueh-Wei Chang
- Published
- 2008
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124. Interplay of angiotensin II and angiotensin(1–7) in the regulation of matrix metalloproteinases of human cardiocytes.
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Chun-Hsu Pan, Cheng-Hao Wen, and Chih-Sheng Lin
- Subjects
ANGIOTENSINS ,ANGIOTENSIN II ,METALLOPROTEINS ,METALLOPROTEINASES ,HEART cells ,PROTEINASES - Abstract
Angiotensin II (Ang II) is a critical effector in the renin–angiotensin system (RAS), which modulates cardiovascular homeostasis, and the matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) related metabolism of extracellular matrix (ECM). Angiotensin(1–7) [Ang(1–7)] is another bioactive peptide in the RAS and is considered to have opposite effects to Ang II. However, the modulation of MMPs and TIMPs by Ang(1–7) is largely unclear in cardiocytes, and the antagonistic effects of Ang(1–7) on Ang II-mediated expression of MMPs and TIMPs have yet to be identified. In the present study, we examined the transcript expression of MMPs and TIMPs in human cardiac fibroblasts (HCF) and myocytes (HCM) after Ang II or Ang(1–7) stimulation, and analysed the antagonistic effects of Ang(1–7) to Ang II. The results show that Ang II decreased transcript expression of MMP-1, MMP-2, TIMP-1, TIMP-2 and TIMP-3, but upregulated MMP-9 expression in the HCF cells. Transcript expression of MMP-9 and TIMP-2 was downregulated by Ang(1–7) in the same cells. In the HCM cells, Ang II induced MMP-1 and MMP-9 overexpression but MMP-2 was downregulated. All of the examined MMPs and TIMPs, except MMP-9, were markedly decreased by Ang(1–7). In the studies of antagonistic effects of Ang(1–7) to Ang II, Ang(1–7) counteracted the effects of Ang II-mediated regulation on MMP-9 and TIMP-1 in the HCF cells compared with the control group. The regulations of all examined MMPs by Ang II were reversed to basal expression by Ang(1–7) in the HCM cells. Our results suggest that Ang(1–7) and Ang II have opposite and antagonistic effects on regulation of transcription of MMPs and TIMPs in primary cultures of human cardiocytes. These effects lead to increased ratios of MMPs to TIMPs after Ang II stimulation and decreased ratios of MMPs to TIMPs after Ang(1–7) stimulation; effects which may partly depend of the type of cardiac cells. These results suggest a potential role for Ang(1–7) in attenuatating cardiac damage in Ang II-induced ECM remodelling. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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125. High-throughput avian molecular sexing by SYBR green-based real-time PCR combined with melting curve analysis.
- Author
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Hsueh-Wei Chang, Chun-An Cheng, De-Leung Gu, Chia-Che Chang, San-Hua Su, Cheng-Hao Wen, Yii-Cheng Chou, Ta-Ching Chou, Cheng-Te Yao, Chi-Li Tsai, and Chien-Chung Cheng
- Subjects
DNA helicases ,BIRDS ,POLYMERASE chain reaction ,CARRIER proteins ,ELECTROPHORESIS - Abstract
Background: Combination of CHD (chromo-helicase-DNA binding protein)-specific polymerase chain reaction (PCR) with electrophoresis (PCR/electrophoresis) is the most common avian molecular sexing technique but it is lab-intensive and gel-required. Gender determination often fails when the difference in length between the PCR products of CHD-Z and CHD-W genes is too short to be resolved. Results: Here, we are the first to introduce a PCR-melting curve analysis (PCR/MCA) to identify the gender of birds by genomic DNA, which is gel-free, quick, and inexpensive. Spilornis cheela hoya (S. c. hoya) and Pycnonotus sinensis (P. sinensis) were used to illustrate this novel molecular sexing technique. The difference in the length of CHD genes in S. c. hoya and P. sinensis is 13-, and 52-bp, respectively. Using Griffiths' P2/P8 primers, molecular sexing failed both in PCR/electrophoresis of S. c. hoya and in PCR/MCA of S. c. hoya and P. sinensis. In contrast, we redesigned sex-specific primers to yield 185- and 112-bp PCR products for the CHD-Z and CHD-W genes of S. c. hoya, respectively, using PCR/MCA. Using this specific primer set, at least 13 samples of S. c. hoya were examined simultaneously and the Tm peaks of CHD-Z and CHD-W PCR products were distinguished. Conclusion: In this study, we introduced a high-throughput avian molecular sexing technique and successfully applied it to two species. This new method holds a great potential for use in high throughput sexing of other avian species, as well. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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126. Identification of a Common Epitope in Nucleocapsid Proteins of Euro-America Orthotospoviruses and Its Application for Tagging Proteins.
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Cheng, Hao-Wen, Tsai, Wei-Ting, Hsieh, Yi-Ying, Chen, Kuan-Chun, and Yeh, Shyi-Dong
- Subjects
- *
TOMATO spotted wilt virus disease , *RECOMBINANT proteins , *PROTEINS , *MOSAIC viruses , *PROTEIN-protein interactions , *MONOCLONAL antibodies , *COAT proteins (Viruses) - Abstract
The NSs protein and the nucleocapsid protein (NP) of orthotospoviruses are the major targets for serological detection and diagnosis. A common epitope of KFTMHNQIF in the NSs proteins of Asia orthotospoviruses has been applied as an epitope tag (nss-tag) for monitoring recombinant proteins. In this study, a monoclonal antibody TNP MAb against the tomato spotted wilt virus (TSWV) NP that reacts with TSWV-serogroup members of Euro-America orthotospoviruses was produced. By truncation and deletion analyses of TSWV NP, the common epitope of KGKEYA was identified and designated as the np sequence. The np sequence was successfully utilized as an epitope tag (np-tag) to monitor various proteins, including the green fluorescence protein, the coat protein of the zucchini yellow mosaic virus, and the dust mite chimeric allergen Dp25, in a bacterial expression system. The np-tag was also applied to investigate the protein–protein interaction in immunoprecipitation. In addition, when the np-tag and the nss-tag were simultaneously attached at different termini of the expressed recombinant proteins, they reacted with the corresponding MAbs with high sensitivity. Here, we demonstrated that the np sequence and TNP MAb can be effectively applied for tagging and detecting proteins and can be coupled with the nss-tag to form a novel epitope-tagging system for investigating protein–protein interactions. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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127. Cathodic plasma–induced syntheses of graphene nanosheet/MnO2/WO3 architectures and their use in supercapacitors.
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Huang, Shih-Yu, Le, Phuoc-Anh, Yen, Po-Jen, Lu, Yi-Chun, Sahoo, Sumanta Kumar, Cheng, Hao-Wen, Chiu, Po-Wen, Tseng, Tseung-Yuen, and Wei, Kung-Hwa
- Subjects
- *
SUPERCAPACITOR electrodes , *SCANNING transmission electron microscopy , *ENERGY storage , *TRANSMISSION electron microscopy , *PLASMA materials processing , *GRAPHENE synthesis , *SURFACE diffusion - Abstract
In this study, we synthesized new 0.01–2 μm graphene nanosheet/MnO 2 /WO 3 (G/MnO 2 /WO 3) architectures through an electrochemically induced cathodic plasma process in a single batch at a lower temperature (70 °C) and for a shorter time (2 h) than those required for the syntheses of similar structures when using a hydrothermal method. We first obtained 0.01–1 μm leaf-like graphene (G) nanosheets, then 0.1–0.3 μm long and approximately 10 nm diameter petiole-like MnO 2 nanowires on the G nanosheets, and finally 0.20–2.0 μm petal-like WO 3 on MnO 2 /G — thereby forming the G/MnO 2 /WO 3 architectures — as evidenced using scanning electron microscopy and transmission electron microscopy. We deciphered the step-wise reaction mechanism behind the formation of the G/MnO 2 /WO 3 architectures during the plasma process. The high surface area of 291 m2 g−1 in the G/MnO 2 /WO 3 architecture was contributed mainly by the G nanosheets, providing a suitable surface area for diffusion of the charge carriers during the charging and discharging process. As a result, an electrode incorporating the G/MnO 2 /WO 3 architectures exhibited an excellent specific capacitance of 620 F g−1 — 45 and 200% higher than those of G/MnO 2 (421 F g−1) and G (189 F g−1) electrodes, respectively — at a current density of 0.5 A g−1. Moreover, the G/MnO 2 /WO 3 –incorporated electrode exhibited good electrochemical cycling stability, with 90% capacitance retention over 5000 cycles at 1 A g−1. Such new G/MnO 2 /WO 3 heterojunction structures, not only provide high-performance electrode applications, but also suggest a potential approach toward fabricating other heterojunction structures having high surface areas for energy storage applications. • Cathodic plasma–induced syntheses of G/MnO 2 /WO 3 architectures in a single batch. • Proposed reaction mechanism for the cathodic plasma process. • G/MnO 2 /WO 3 structure displaying a high specific capacitance of 620 F g−1 at 0.5 A g−1. • G/MnO 2 /WO 3 architectures exhibiting good stability during electrochemical cycling. [ABSTRACT FROM AUTHOR]
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- 2020
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128. Supporting Differentiated Streaming Services in Heterogeneous Vehicle-to-Everything Networks.
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Huang CJ, Hu KW, Cheng HW, Jian ME, and Tsamarah MIF
- Abstract
Advancements in assisted driving technologies are expected to enable future passengers to use a wide range of multimedia applications in electric vehicles (EVs). To address the bandwidth demands for high-resolution and immersive videos during peak traffic, this study introduces a bandwidth-management algorithm to support differentiated streaming services in heterogeneous vehicle-to-everything (V2X) networks. By leveraging cellular 6G base stations, along with Cell-Free (CF) Massive Multi-Input Multi-Output (mMIMO) Wi-Fi 7 access points, the algorithm aims to provide a high-coverage, high-speed, and low-interference V2X network environment. Additionally, Li-Fi technology is employed to supply extra bandwidth to vehicles with limited connectivity via V2V communication. Importantly, the study addresses the urgency and prioritization of different applications to ensure the smooth execution of emergency applications and introduces a pre-downloading mechanism specifically for non-real-time applications. Through simulations, the algorithm's effectiveness in meeting EV users' bandwidth needs for various multimedia streaming applications is demonstrated. During peak-bandwidth-demand periods, users experienced an average increase in bandwidth of 47%. Furthermore, bandwidth utilization across the V2X landscape is significantly improved.
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- 2024
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129. Breaking barriers: A Pediatrician's perspective on enhancing early diagnosis of developmental dysplasia of the hip.
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Shen SP, Kuo CC, Cheng HW, Tsai ML, Yang CY, Lin CL, Lin HC, and Chen YT
- Abstract
Competing Interests: Declaration of competing interest A conflict of interest occurs when an individual's objectivity is potentially compromised by a desire for financial gain, prominence, professional advancement or a successful outcome. JFMA Editors strive to ensure that what is published in the Journal is as balanced, objective and evidence-based as possible. Since it can be difficult to distinguish between an actual conflict of interest and a perceived conflict of interest, the Journal requires authors to disclose all and any potential conflicts of interest.
- Published
- 2024
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130. The Fifth Residue of the Coat Protein of Turnip Mosaic Virus Is Responsible for Long-Distance Movement in a Local-Lesion Host and Aphid Transmissibility in a Systemic Host.
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Hu WC, Tsai JC, Cheng HW, Huang CH, Raja JAJ, Chang FY, Chen CC, Chiang CH, and Yeh SD
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- Animals, Amino Acid Sequence, Mutagenesis, Site-Directed, Plant Leaves virology, Aphids virology, Capsid Proteins genetics, Capsid Proteins metabolism, Plant Diseases virology, Nicotiana virology, Potyvirus genetics, Potyvirus physiology, Chenopodium quinoa virology
- Abstract
HC-Pro and coat protein (CP) genes of a potyvirus facilitate cell-to-cell movement and are involved in the systemic movement of the viruses. The interaction between HC-Pro and CP is mandatory for aphid transmission. Two turnip mosaic virus (TuMV) isolates, RC4 and YC5, were collected from calla lily plants in Taiwan. The virus derived from the infectious clone pYC5 cannot move systemically in Chenopodium quinoa plants and loses aphid transmissibility in Nicotiana benthamiana plants, like the initially isolated virus. Sequence analysis revealed that two amino acids, P
5 and A206 , of YC5 CP uniquely differ from RC4 and other TuMV strains. Recombination assay and site-directed mutagenesis revealed that the fifth residue of leucine (L) at the N-terminal region of the CP (TuMV-RC4), rather than proline (P) (TuMV-YC5), is critical to permit the systemic spread in C. quinoa plants. Moreover, the single substitution mutant YC5-CPP5L became aphid transmissible, similar to RC4. Fluorescence microscopy revealed that YC5-GFP was restricted in the petioles of inoculated leaves, whereas YC5-CPP5L -GFP translocated through the petioles of inoculated leaves, the main stem, and the petioles of the upper uninoculated leaves of C. quinoa plants. In addition, YC5-GUS was blocked at the basal part of the petiole connecting to the main stem of the inoculated C. quinoa plants, whereas YC5-CPP5L -GFP translocated to the upper leaves. Thus, a single amino acid, the residue L5 at the N-terminal region right before the6 DAG8 motif, is critical for the systemic translocation ability of TuMV in a local lesion host and for aphid transmissibility in a systemic host., Competing Interests: The author(s) declare no conflict of interest.- Published
- 2024
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131. Tuning polymer-backbone coplanarity and conformational order to achieve high-performance printed all-polymer solar cells.
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Wu Y, Yuan Y, Sorbelli D, Cheng C, Michalek L, Cheng HW, Jindal V, Zhang S, LeCroy G, Gomez ED, Milner ST, Salleo A, Galli G, Asbury JB, Toney MF, and Bao Z
- Abstract
All-polymer solar cells (all-PSCs) offer improved morphological and mechanical stability compared with those containing small-molecule-acceptors (SMAs). They can be processed with a broader range of conditions, making them desirable for printing techniques. In this study, we report a high-performance polymer acceptor design based on bithiazole linker (PY-BTz) that are on par with SMAs. We demonstrate that bithiazole induces a more coplanar and ordered conformation compared to bithiophene due to the synergistic effect of non-covalent backbone planarization and reduced steric encumbrances. As a result, PY-BTz shows a significantly higher efficiency of 16.4% in comparison to the polymer acceptors based on commonly used thiophene-based linkers (i.e., PY-2T, 9.8%). Detailed analyses reveal that this improvement is associated with enhanced conjugation along the backbone and closer interchain π-stacking, resulting in higher charge mobilities, suppressed charge recombination, and reduced energetic disorder. Remarkably, an efficiency of 14.7% is realized for all-PSCs that are solution-sheared in ambient conditions, which is among the highest for devices prepared under conditions relevant to scalable printing techniques. This work uncovers a strategy for promoting backbone conjugation and planarization in emerging polymer acceptors that can lead to superior all-PSCs., (© 2024. The Author(s).)
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- 2024
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132. Long-Term Pulmonary and Neurodevelopmental Outcomes of Meconium Aspiration Syndrome Affected Infants: A Retrospective National Population-Based Study in Taiwan.
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Shen SP, Chen YT, Chiu HY, Tsai ML, Cheng HW, Huang KH, Chang YC, and Lin HC
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- Humans, Retrospective Studies, Female, Male, Taiwan epidemiology, Infant, Newborn, Infant, Respiration, Artificial, Neurodevelopmental Disorders etiology, Neurodevelopmental Disorders epidemiology, Severity of Illness Index, Case-Control Studies, Child, Preschool, Meconium Aspiration Syndrome therapy, Meconium Aspiration Syndrome epidemiology, Meconium Aspiration Syndrome complications, Length of Stay statistics & numerical data
- Abstract
Introduction: Meconium aspiration syndrome (MAS) may cause severe pulmonary and neurologic injuries in affected infants after birth, leading to long-term adverse pulmonary or neurodevelopmental outcomes., Methods: This retrospective population-based cohort study enrolled 1,554,069 mother-child pairs between 2004 and 2014. A total of 8,049 infants were in the MAS-affected group, whereas 1,546,020 were in the healthy control group. Children were followed up for at least 3 years. According to respiratory support, MAS was classified as mild, moderate, and severe. With the healthy control group as the reference, the associations between MAS severity and adverse pulmonary outcomes (hospital admission, intensive care unit (ICU) admission, length of hospital stay, or invasive ventilator support during admission related to pulmonary problem) or adverse neurodevelopmental outcomes (cerebral palsy, needs for rehabilitation, visual impairment, or hearing impairment) were accessed., Results: MAS-affected infants had a higher risk of hospital and ICU admission and longer length of hospital stay, regardless of severity. Infants with severe MAS had a higher risk of invasive ventilator support during re-admission (odds ratio: 17.50, 95% confidence interval [CI]: 7.70-39.75, p < 0.001). Moderate (hazard ratio [HR]: 1.66, 95% CI: 1.30-2.13, p < 0.001) and severe (HR: 4.94, 95% CI: 4.94-7.11, p < 0.001) MAS groups had a higher risk of adverse neurodevelopmental outcome, and the statistical significance remained remarkable in severe MAS group after adjusting for covariates (adjusted HR: 2.28, 95% CI: 1.54-3.38, p < 0.001) Conclusions: Adverse pulmonary or neurodevelopmental outcomes could occur in MAS-affected infants at birth. Close monitoring and follow-up of MAS-affected infants are warranted., (© 2024 S. Karger AG, Basel.)
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- 2024
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133. Application of Bidirectional Long Short-Term Memory to Adaptive Streaming for Internet of Autonomous Vehicles.
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Huang CJ, Hu KW, and Cheng HW
- Abstract
It is expected that interconnected networks of autonomous vehicles, especially during peak traffic, will face congestion challenges. Moreover, the existing literature lacks discussions on integrating next-generation wireless communication technologies into connected vehicular networks. Hence, this paper introduces a tailored bandwidth management algorithm for streaming applications of autonomous vehicle passengers. It leverages cutting-edge 6G wireless technology to create a network with high-speed transmission and broad coverage, ensuring smooth streaming application performance. The key features of bandwidth allocation for diverse streaming applications in this work include bandwidth relay and pre-loading of video clips assisted by vehicle-to-vehicle communication. Through simulations, this research effectively showcases the algorithm's ability to fulfill the bandwidth needs of diverse streaming applications for autonomous vehicle passengers. Specifically, during periods of peak user bandwidth demand, it notably increases the bandwidth accessible for streaming applications. On average, users experience a substantial 55% improvement in the bandwidth they can access. This validation affirms the viability and promise of the proposed approach in efficiently managing the intricate complexities of bandwidth allocation issues for streaming services within the connected autonomous vehicular networks.
- Published
- 2023
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134. An Adaptive Bandwidth Management Algorithm for Next-Generation Vehicular Networks.
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Huang CJ, Hu KW, and Cheng HW
- Abstract
The popularity of video services such as video call or video on-demand has made it impossible for people to live without them in their daily lives. It can be anticipated that the explosive growth of vehicular communication owing to the widespread use of in-vehicle video infotainment applications in the future will result in increasing fragmentation and congestion of the wireless transmission spectrum. Accordingly, effective bandwidth management algorithms are demanded to achieve efficient communication and stable scalability in next-generation vehicular networks. To the best of our current knowledge, a noticeable gap remains in the existing literature regarding the application of the latest advancements in network communication technologies. Specifically, this gap is evident in the lack of exploration regarding how cutting-edge technologies can be effectively employed to optimize bandwidth allocation, especially in the realm of video service applications within the forthcoming vehicular networks. In light of this void, this paper presents a seamless integration of cutting-edge 6G communication technologies, such as terahertz (THz) and visible light communication (VLC), with the existing 5G millimeter-wave and sub-6 GHz base stations. This integration facilitates the creation of a network environment characterized by high transmission rates and extensive coverage. Our primary aim is to ensure the uninterrupted playback of real-time video applications for vehicle users. These video applications encompass video conferencing, live video, and on-demand video services. The outcomes of our simulations convincingly indicate that the proposed strategy adeptly addresses the challenge of bandwidth competition among vehicle users. Moreover, it notably boosts the efficient utilization of bandwidth from less crowded base stations, optimizes the fulfillment of bandwidth prerequisites for various video applications, and elevates the overall video quality experienced by users. Consequently, our findings serve as a successful validation of the practicality and effectiveness of the proposed methodology.
- Published
- 2023
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135. Modification of Papaya Ringspot Virus HC-Pro to Generate Effective Attenuated Mutants for Overcoming the Problem of Strain-Specific Cross Protection.
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Cheng HW, Lin TT, Huang CH, Raja JAJ, and Yeh SD
- Subjects
- Cysteine Endopeptidases metabolism, Potyvirus, Cross Protection, Viral Proteins genetics, Viral Proteins metabolism
- Abstract
Cross protection application of HA5-1, an attenuated mutant of papaya ringspot virus (PRSV) HA strain from Hawaii, was withdrawn from Taiwan due to the narrow geographic strain specificity of HA5-1. Here, to overcome this problem, we created attenuated mutants of PRSV YK, a dominant severe strain from Taiwan, by mutating helper component protease (HC-Pro) at F
7 , R181 , F206 , and D397 residues critical for potyviral pathogenicity. PRSV YK HC-Pro R181 I, F206 L, and D397 N single-mutant viruses induced mild symptoms, but their adverse effects on growth of papaya plants disqualified them as useful protective viruses. However, F7 I single-mutant and F7 I + F206 L double-mutant viruses displayed mild symptoms followed by recovery, and they showed a zigzag pattern of accumulation in papaya plants, indicating their potential to trigger RNA silencing and retain partial antagonistic suppression of host defense. Although F7 I + R181 I and F7 I + D397 N double-mutant viruses caused symptomless infection, they accumulated barely above mock level and, thus, were not qualified as proper protective viruses. RNA silencing suppression (RSS) analysis by agroinfiltration in Nicotiana benthamiana plants revealed that the HC-Pro F7 I and F7 I + F206 L mutant proteins were weaker in RSS ability than the wild-type protein. Under greenhouse conditions, F7 I and F7 I + F206 L mutant viruses were genetically stable but not aphid transmissible. Compared with the HA5-1 mutant's low degree (10%) of protection to papaya plants, the F7 I and F7 I + F206 L mutants provided complete (100%) protection to papaya and horn melon plants against strain YK. Thus, F7 I and F7 I + F206 L mutants solve the problem of strain-specific protection and have great potential for control of PRSV in Taiwan., Competing Interests: The author(s) declare no conflict of interest.- Published
- 2023
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136. Modification of the Helper Component Proteinase of Papaya Ringspot Virus Vietnam Isolate to Generate Attenuated Mutants for Disease Management by Cross Protection.
- Author
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Tran TT, Cheng HW, Nguyen VH, and Yeh SD
- Subjects
- Peptide Hydrolases metabolism, Vietnam, Cross Protection, Plant Diseases prevention & control, Disease Management, Potyvirus genetics, Carica
- Abstract
Papaya ( Carica papaya ) production is seriously limited by papaya ringspot virus (PRSV) worldwide, including in Vietnam. Control of PRSV by cross protection is dependent on the availability of effective mild strains. Here, an infectious cDNA clone was constructed from PRSV isolate TG5 from South Vietnam. Site-directed mutagenesis with point mutations on the essential motifs of the helper component proteinase (HC-Pro) was performed, with or without deleting five amino acids (d5) from its N-terminal region. Mutants TG-d5, TG-d5I
7 , and TG-d5L206 containing d5, d5 + F7 I, and d5 + F206 L, respectively, induced mild mottling followed by symptomless recovery on papaya and infected Chenopodium quinoa without lesion formation. Each mutant accumulated in papaya at reduced levels with a zigzag pattern and was stable beyond six monthly passages. The cross-protection effectiveness of the three mutants in papaya against TG5 was investigated, each with 60 plants from three independent trials. The results showed that each mutant provided complete protection (100%) against TG5, 1 month after the challenge inoculation, as verified by the lack of severe symptoms and lack of local lesions in C. quinoa . Further tests revealed that TG-d5I7 also confers high levels of protection against other severe PRSV isolates from South Vietnam, including isolates DN (97%) and ST2 (50%). However, TG-d5I7 is ineffective or less effective (0 to 33%) against seven other severe PRSV strains from different geographic origins, including the isolate HN from North Vietnam. Our results indicate that the protection by the three mutants is highly strain-specific and suitable for the control of PRSV in South Vietnam.- Published
- 2023
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137. Modification of the N-terminal FWKG-αH1 element of potyviral HC-Pro affects its multiple functions and generates effective attenuated mutants for cross-protection.
- Author
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Raja JAJ, Huang CH, Chen CC, Hu WC, Cheng HW, Goh RP, Chao CH, Tan YR, and Yeh SD
- Subjects
- Animals, Cysteine Endopeptidases genetics, Cysteine Endopeptidases metabolism, Plant Diseases prevention & control, Viral Proteins, Aphids, Potyvirus physiology
- Abstract
Control of plant viruses by cross-protection is limited by the availability of effective protective strains. Incorporation of an NIa-protease processing site in the extreme N-terminal region of the helper component protease (HC-Pro) of turnip mosaic virus (TuMV) resulted in a mutant virus TuHN
D I that induced highly attenuated symptoms. Recombination analysis verified that two variations, F7I mutation and amino acid 7-upstream-deletion, in HC-Pro co-determined TuHND I attenuation. TuHND I provided complete protection to Nicotiana benthamiana and Brassica campestris subsp. chinensis plants against infection by the severe parental strain. Aphid transmission tests revealed that TuHND I was not aphid-transmissible. An RNA silencing suppression (RSS) assay by agroinfiltration suggested the RSS-defective nature of the mutant HC-Pro. In the context (amino acids 3-17) encompassing the two variations of HC-Pro, we uncovered an FWKG-α-helix 1 (αH1) element that influenced the functions of aphid transmission and RSS, whose motifs were located far downstream. We further demonstrated that HC-Pro F7 was a critical residue on αH1 for HC-Pro functions and that reinstating αH1 in the RSS-defective HC-Pro of TuHND I restored the protein's RSS function. Yeast two-hybrid and bimolecular fluorescence complementation assays indicated the FWKG-αH1 element as an integral part of the HC-Pro self-interaction domain. The possibility of regulation of the mechanistically independent functions of RSS and aphid transmission by the FWKG-αH1 element is discussed. Extension of TuMV HC-Pro FWKG-αH1 variations to another potyvirus, zucchini yellow mosaic virus, also generated nonaphid-transmissible cross-protective mutant viruses. Hence, the modification of the FWKG-αH1 element can generate effective attenuated viruses for the control of potyviruses by cross-protection., (© 2022 The Authors. Molecular Plant Pathology published by British Society for Plant Pathology and John Wiley & Sons Ltd.)- Published
- 2022
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138. Dosimetric comparison of helical tomotherapy, volumetric-modulated arc therapy, intensity-modulated radiotherapy, and field-in-field technique for synchronous bilateral breast cancer.
- Author
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Cheng HW, Chang CC, Shiau AC, Wang MH, and Tsai JT
- Subjects
- Breast Neoplasms diagnostic imaging, Female, Heart, Humans, Lung, Neoplasms, Multiple Primary diagnostic imaging, Organs at Risk, Radiometry, Retrospective Studies, Tomography, Spiral Computed, Breast Neoplasms radiotherapy, Neoplasms, Multiple Primary radiotherapy, Radiotherapy Planning, Computer-Assisted, Radiotherapy, Intensity-Modulated
- Abstract
Purpose: To compare the dosimetric characteristics of helical tomotherapy (HT), volumetric-modulated arc therapy (VMAT), intensity-modulated radiotherapy (IMRT), and tangential field-in-field technique (FIF) for the treatment of synchronous bilateral breast cancer (SBBC)., Methods and Materials: Ten patients with early-stage unilateral breast cancer were selected for simulating the patients with SBBC in this retrospective analysis. Treatment plans with HT, VMAT, IMRT, and FIF were generated for each patient with a total dose of 50.4 Gy in 28 fractions to the target. Plan quality, namely conformity index (CI), homogeneity index (HI), dose-volume statistics of organs at risk (OARs), and beam-on time (BOT), were evaluated., Results: HT plans showed a lower mean heart dose (3.53 ± 0.31Gy) compared with the other plans (VMAT = 5.6 ± 1.36 Gy, IMRT = 3.80 ± 0.76 Gy, and FIF = 4.84 ± 2.13 Gy). Moreover, HT plans showed a significantly lower mean lung dose (p < 0.01) compared with the other plans: mean right lung doses were 6.81 ± 0.67, 10.32 ± 1.04, 9.07 ± 1.21, and 10.03 ± 1.22 Gy and mean left lung doses were 6.33 ± 0.87, 8.82 ± 0.91, 7.84 ± 1.07, and 8.64 ± 0.99 Gy for HT, VMAT, IMRT, and FIF plans, respectively. The mean dose to the left anterior descending artery was significantly lower in HT plans (p < 0.01) than in the other plans: HT = 19.41 ± 0.51 Gy, VMAT = 25.77 ± 7.23 Gy, IMRT = 27.87 ± 6.48 Gy, and FIF = 30.95 ± 10.17 Gy. FIF plans showed a worse CI and HI compared with the other plans. VMAT plans showed shorter BOT (average, 3.9 ± 0.2 minutes) than did HT (average, 11.0 ± 3.0 minutes), IMRT (average, 6.1 ± 0.5 minutes), and FIF (average, 4.6 ± 0.7 minutes) plans., Conclusions: In a dosimetric comparison for SBBC, HT provided the most favorable dose sparing of OARs. However, HT with longer BOT may increase patient discomfort and treatment uncertainty. VMAT enabled shorter BOT with acceptable doses to OARs and had a better CI than did FIF and IMRT., (Copyright © 2020 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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139. Hydrogen plasma-treated MoSe 2 nanosheets enhance the efficiency and stability of organic photovoltaics.
- Author
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Wang HC, Lin YC, Chen CH, Huang CH, Chang B, Liu YL, Cheng HW, Tsao CS, and Wei KH
- Abstract
In this paper we report the effect on the power conversion efficiency (PCE) and stability of photovoltaic devices after incorporating hydrogenated two-dimensional (2D) MoSe
2 nanosheets into the active layer of bulk heterojunction (BHJ) organic photovoltaics (OPV). The surface properties of 2D MoSe2 nanosheets largely affect their dispersion in the active layer blend and, thus, influence the carrier mobility, PCE, and stability of corresponding devices. We treated MoSe2 nanosheets with hydrogen plasma and investigated their influence on the polymer packing and fullerene domain size of the active layer. For the optimized devices incorporating 37.5 wt% of untreated MoSe2 , we obtained a champion PCE of 9.82%, compared with the champion reference PCE of approximately 9%. After incorporating the hydrogen plasma-treated MoSe2 nanosheets, we achieved a champion PCE of 10.44%-a relative increase of 16% over that of the reference device prepared without MoSe2 nanosheets. This PCE is the one of the highest ever reported for OPVs incorporating 2D materials. We attribute this large enhancement to the enhanced exciton generation and dissociation at the MoSe2 -fullerene interface and, consequently, the balanced charge carrier mobility. The device incorporating the MoSe2 nanosheets maintained 70% of its initial PCE after heat-treatment at 100 °C for 1 h; in contrast, the PCE of the reference device decreased to 60% of its initial value-a relative increase in stability of 17% after incorporating these nanosheets. We also incorporated MoSe2 nanosheets (both with and without treatment) into a polymer donor (PBDTTBO)/small molecule (IT-4F) acceptor system. The champion PCEs reached 7.85 and 8.13% for the devices incorporating the MoSe2 nanosheets with and without plasma treatment, respectively-relative increases of 8 and 12%, respectively, over that of the reference. These results should encourage a push toward the implementation of transition metal dichalcogenides to enhance the performances of BHJ OPVs.- Published
- 2019
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140. Unique Energy Alignments of a Ternary Material System toward High-Performance Organic Photovoltaics.
- Author
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Cheng P, Wang J, Zhang Q, Huang W, Zhu J, Wang R, Chang SY, Sun P, Meng L, Zhao H, Cheng HW, Huang T, Liu Y, Wang C, Zhu C, You W, Zhan X, and Yang Y
- Abstract
Incorporating narrow-bandgap near-infrared absorbers as the third component in a donor/acceptor binary blend is a new strategy to improve the power conversion efficiency (PCE) of organic photovoltaics (OPV). However, there are two main restrictions: potential charge recombination in the narrow-gap material and miscompatibility between each component. The optimized design is to employ a third component (structurally similar to the donor or acceptor) with a lowest unoccupied molecular orbital (LUMO) energy level similar to the acceptor and a highest occupied molecular orbital (HOMO) energy level similar to the donor. In this design, enhanced absorption of the active layer and enhanced charge transfer can be realized without breaking the optimized morphology of the active layer. Herein, in order to realize this design, two new narrow-bandgap nonfullerene acceptors with suitable energy levels and chemical structures are designed, synthesized, and employed as the third component in the donor/acceptor binary blend, which boosts the PCE of OPV to 11.6%., (© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2018
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141. Effect of low-dose tacrolimus with mycophenolate mofetil on renal function following liver transplantation.
- Author
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Hao JC, Wang WT, Yan LN, Li B, Wen TF, Yang JY, Xu MQ, Zhao JC, and Wei YG
- Subjects
- Adult, Calcineurin Inhibitors adverse effects, China epidemiology, Drug Therapy, Combination, Female, Glomerular Filtration Rate drug effects, Humans, Immunosuppressive Agents adverse effects, Incidence, Kidney physiopathology, Male, Middle Aged, Mycophenolic Acid administration & dosage, Mycophenolic Acid adverse effects, Renal Insufficiency, Chronic diagnosis, Renal Insufficiency, Chronic mortality, Retrospective Studies, Risk Factors, Tacrolimus adverse effects, Time Factors, Treatment Outcome, Calcineurin Inhibitors administration & dosage, Immunosuppressive Agents administration & dosage, Kidney drug effects, Liver Transplantation adverse effects, Liver Transplantation mortality, Mycophenolic Acid analogs & derivatives, Renal Insufficiency, Chronic prevention & control, Tacrolimus administration & dosage
- Abstract
Aim: To determine whether low-dose tacrolimus (TAC) combined with mycophenolate mofetil (MMF) is a safe approach to decrease the incidence of chronic kidney disease (CKD) in liver transplantation (LT) recipients., Methods: We analyzed the medical records of 689 patients who underwent LT between March 1999 and December 2012 in a single Chinese center. Immunosuppression was initiated with a calcineurin inhibitor (TAC or CSA) and prednisone with or without MMF. CKD is defined by the glomerular filtration rate (GFR), estimated by an abbreviated Modification of Diet in Renal Disease formula, < 60 mL/min per 1.73 m(2) for at least 3 consecutive months after LT. Individuals with TAC trough concentrations ≤ 8 ng/mL at 3 mo after LT were defined as the low-dose group. The incidence of CKD within 5 years was compared between the TAC group and the CSA group, as well as between four subgroups (low-dose and high-dose TAC groups with or without MMF)., Results: No difference regarding the occurrence of pre-LT renal dysfunction or that of post-LT rejection was found between the TAC and CSA groups or between the four subgroups. With a definition of GFR < 60 mL/min per 1.73 m(2), the overall incidence of CKD was significantly higher in the CSA group than in the TAC group. The incidence of CKD in the low-dose TAC + MMF group (7.7%) was significantly lower than that observed in the low-dose TAC group (15.9%), high-dose TAC group (24.6%) and high-dose TAC + MMF group (18.5%). The cumulative 1-, 3- and 5-year incidence rates of CKD were 12.7%, 14.5% and 16.7%, respectively. The cumulative 5-year survival rates were 61.7% and 82.2% in patients with or without CKD, respectively., Conclusion: In LT patients, the choice of immunosuppressive therapy appears to affect renal function and patient survival.
- Published
- 2014
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