147 results on '"Yi Yu Chen"'
Search Results
2. Arbitrary-Scale Image Super Resolution Using Residual In Residual Dense Networks With New Local Implicit Image Function.
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Yi-Yu Chen and Yi-Leh Wu
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- 2023
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3. The Efficacy of Anthropometric Indicators in Predicting Non-Alcoholic Fatty Liver Disease Using FibroScan® CAP Values among the Taiwanese Population
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Meng-Szu Lee, Eva Belingon Felipe-Dimog, Jeng-Fu Yang, Yi-Yu Chen, Kuan-Ta Wu, Hsiang-Ju Kuo, Tzu-Chun Lin, Chao-Ling Wang, Meng-Hsuan Hsieh, Chia-Yi Lin, Batbold Batsaikhan, Chi-Kung Ho, Ming-Tsang Wu, and Chia-Yen Dai
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non-alcoholic fatty liver disease ,controlled attenuation parameters ,anthropometric indicators ,Biology (General) ,QH301-705.5 - Abstract
The controlled attenuation parameter (CAP) measurement obtained from FibroScan® is a low-risk method of assessing fatty liver. This study investigated the association between the FibroScan® CAP values and nine anthropometric indicators, including the abdominal volume index (AVI), body fat percentage (BFP), body mass index (BMI), conicity index (CI), ponderal index (PI), relative fat mass (RFM), waist circumference (WC), waist–hip ratio (WHR), and waist-to-height ratio (WHtR), and risk of non-alcoholic fatty liver disease (fatty liver). We analyzed the medical records of adult patients who had FibroScan® CAP results. CAP values 2 to 34.9 kg/m2. Class 2 obesity is defined by a BMI ranging from 35 kg/m2 to 39.9 kg/m2, while class 3 obesity is designated by a BMI of 40 kg/m2 or higher. Out of 1763 subjects, 908 (51.5%) had fatty liver. The BMI, WHtR, and PI were found to be more strongly correlated with the CAP by the cluster dendrogram with correlation coefficients of 0.58, 0.54, and 0.54, respectively (all p < 0.0001). We found that 28.3% of the individuals without obesity had fatty liver, and 28.2% of the individuals with obesity did not have fatty liver. The BMI, CI, and PI were significant predictors of fatty liver. The BMI, PI, and WHtR demonstrated better predictive ability, indicated by AUC values of 0.72, 0.68, and 0.68, respectively, a finding that was echoed in our cluster group analysis that showed interconnected clustering with the CAP. Therefore, of the nine anthropometric indicators we studied, the BMI, CI, PI, and WHtR were found to be more effective in predicting the CAP score, i.e., fatty liver.
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- 2023
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4. Copy number amplification of ENSA promotes the progression of triple-negative breast cancer via cholesterol biosynthesis
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Yi-Yu Chen, Jing-Yu Ge, Si-Yuan Zhu, Zhi-Ming Shao, and Ke-Da Yu
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Science - Abstract
Copy number alterations are pivotal genetic events in triple-negative breast cancer. Here the authors show the amplification of ENSA at the 1q21.3 region promotes the progression of TNBC via up-regulation of cholesterol biosynthesis.
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- 2022
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5. Combined Single‐Cell and Spatial Transcriptomics Reveal the Metabolic Evolvement of Breast Cancer during Early Dissemination
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Yi‐Ming Liu, Jing‐Yu Ge, Yu‐Fei Chen, Tong Liu, Lie Chen, Cui‐Cui Liu, Ding Ma, Yi‐Yu Chen, Yu‐Wen Cai, Ying‐Ying Xu, Zhi‐Ming Shao, and Ke‐Da Yu
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breast cancer ,early dissemination ,metabolism ,single‐cell RNA sequencing ,spatial transcriptomics ,Science - Abstract
Abstract Breast cancer is now the most frequently diagnosed malignancy, and metastasis remains the leading cause of death in breast cancer. However, little is known about the dynamic changes during the evolvement of dissemination. In this study, 65 968 cells from four patients with breast cancer and paired metastatic axillary lymph nodes are profiled using single‐cell RNA sequencing (scRNA‐seq) and spatial transcriptomics. A disseminated cancer cell cluster with high levels of oxidative phosphorylation (OXPHOS), including the upregulation of cytochrome C oxidase subunit 6C and dehydrogenase/reductase 2, is identified. The transition between glycolysis and OXPHOS when dissemination initiates is noticed. Furthermore, this distinct cell cluster is distributed along the tumor's leading edge. The findings here are verified in three different cohorts of breast cancer patients and an external scRNA‐seq dataset, which includes eight patients with breast cancer and paired metastatic axillary lymph nodes. This work describes the dynamic metabolic evolvement of early disseminated breast cancer and reveals a switch between glycolysis and OXPHOS in breast cancer cells as the early event during lymph node metastasis.
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- 2023
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6. Higher NAFLD fibrosis score is associated with impaired eGFR
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Meng-Hsuan Hsieh, Kuan-Ta Wu, Yi-Yu Chen, Jeng-Fu Yang, Wen-Yi Lin, Ning-Chia Chang, Chia-Yi Lin, Chao-Kuan Huang, Chao-Ling Wang, Hung-Yi Chuang, Shu-Ching Lin, Yu-Kuei Hsu, Yi-Shan Tsai, Wan-Long Chuang, Ming-Lung Yu, and Chia-Yen Dai
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Medicine (General) ,R5-920 - Abstract
Background/Purpose: Chronic kidney disease (CKD) has become a worldwide health problem, leading to high morbidity and mortality, and non-alcoholic fatty liver disease (NAFLD) is considered a risk factor for CKD. The aim of this study was to explore the relationship between NAFLD fibrosis score (NFS) and the estimated glomerular filtration rate (eGFR), and identify possible risk factors related to the NFS among Taiwanese subjects. Methods: Subjects were enrolled from the database of the Department of Preventive Medicine of Kaohsiung Municipal Hsiao-Kang Hospital. The eGFR was calculated according to the Taiwanese Modification of Diet in Renal Disease (TMDRD) equation, and the NFS was employed to evaluate the fibrotic level. Results: In total, 11,376 subjects were enrolled in this study, with a mean age of 52.0 ± 6.81 years, including 4529 (39.8%) males. A fasting sugar level ≥100 mg/dL (OR = 1.70, 95% CI = 1.52–1.87) and an abnormal waist circumference (OR = 1.81, 95% CI = 1.65–1.99) were significant factors associated with NFS (p
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- 2020
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7. Epidemiology of Chronic Hepatitis B Infection in the Cohort of College Students with Vaccination in Taiwan
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Te-Wei Cheng, Jeng-Fu Yang, Yi-Yu Chen, Kuan-Ta Wu, Meng-Szu Lee, Hsiang-Ju Kuo, Tzu-Chun Lin, Chao-Ling Wang, Meng-Hsuan Hsieh, Chia-Yi Lin, Batbold Batsaikhan, Chi-Kung Ho, and Chia-Yen Dai
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HBV ,vaccine ,HBsAg ,anti-HBs ,Medicine - Abstract
After the mass vaccination project in Taiwan, the prevalence of the hepatitis B virus (HBV) infection for the college-aged population of 18 to 21 years is uncertain. We aimed to investigate the prevalence of hepatitis B markers in different birth cohorts. A total of 38,075 students in universities in Kaohsiung area undergoing entrance examinations between July 2006 to September 2020 were included. Seroprevalence of the hepatitis B surface antigen (HBsAg) and hepatitis B surface antibody (anti-HBs) status and laboratory data were collected. The seropositive rate of HBsAg was less than 1% for students born after 1991. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST), were significantly higher, and body mass index (BMI) was significantly lower in HBV carriers compared to those who were not carriers (all p < 0.001). Multivariate logistic regression showed that age, male, higher BMI, and positive HBsAg were risk factors of abnormal ALT value. A decrease in the positive rate of anti-HBs which was significantly higher in the cohort of plasma-derived vaccines than recombinant vaccines was found. We concluded that there were decreasing trends in seropositive rates of HBsAg and anti-HBs for students of the college-aged population in the Kaohsiung area. The status of HBsAg was a predictive factor of abnormal ALT levels. The period effect on anti-HBs seropositivity for DNA recombinant vaccine somehow existed.
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- 2023
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8. Bilateral Sensorimotor Cortical Communication Modulated by Multiple Hand Training in Stroke Participants: A Single Training Session Pilot Study
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Jian-Jia Huang, Yu-Cheng Pei, Yi-Yu Chen, Shen-Shiou Tseng, and Jen-Wen Hung
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robot-assisted training ,stroke ,mirror therapy ,bimanual training ,EEG ,coherence ,Technology ,Biology (General) ,QH301-705.5 - Abstract
Bi-manual therapy (BT), mirror therapy (MT), and robot-assisted rehabilitation have been conducted in hand training in a wide range of stages in stroke patients; however, the mechanisms of action during training remain unclear. In the present study, participants performed hand tasks under different intervention conditions to study bilateral sensorimotor cortical communication, and EEG was recorded. A multifactorial design of the experiment was used with the factors of manipulating objects (O), robot-assisted bimanual training (RT), and MT. The sum of spectral coherence was applied to analyze the C3 and C4 signals to measure the level of bilateral corticocortical communication. We included stroke patients with onset 1 year (n = 20), and their Brunnstrom recovery stage ranged from 2 to 4. The results showed that stroke duration might influence the effects of hand rehabilitation in bilateral cortical corticocortical communication with significant main effects under different conditions in the alpha and beta bands. Therefore, stroke duration may influence the effects of hand rehabilitation on interhemispheric coherence.
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- 2022
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9. Immune-Activated Regional Lymph Nodes Predict Favorable Survival in Early-Stage Triple-Negative Breast Cancer
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Yi-Yu Chen, Jing-Yu Ge, Ding Ma, and Ke-Da Yu
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triple-negative breast cancer ,lymph node ,immune response ,survival ,immune activation ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Immune response and immunotherapy play important roles in triple-negative breast cancer (TNBC). However, it is difficult to judge whether cancer is “immune-inactivated” or “immune-activated” by the carcinoma itself. The immune reaction of the microenvironment or the host to the tumor might be more informative. We assumed that clinically enlarged but pathologically negative regional lymph nodes served as an indicator for early immune response to tumors. First, we identified women with pN0 breast cancer disease from the current Surveillance, Epidemiology, and End Results database, and we compared the cN1 patients of breast cancer-specific survival (BCSS) with cN0 patients. Then, we extracted total RNA from 36 paired large (defined as minimum diameter more than 15 mm in size) and small lymph nodes (defined as maximum diameter less than 5 mm in size) from 12 TNBC, 12 HER2-enriched, and 12 luminal-like patients and performed RNA sequencing to explore the gene expression and cellular landscape of large nodes compared to small ones. Among 692 women with pathologically confirmed node-negative disease, cN1 patients unexpectedly had a better BCSS compared with cN0 in TNBC (adjusted hazard ratio 0.148, 95% CI, 0.040–0.546, P = 0.004) but not in other subtypes. Further transcriptome sequencing of 12 paired enlarged and small negative nodes from TNBC patients revealed that increased immune activation signaling (e.g., interferon-gamma response pathways) and abundant immune cells (activated dendritic cells, CD4+ and CD8+ T-cells) were more frequently observed in enlarged nodes. Our data implied that early immune activation in regional lymph nodes in TNBC might affect survival.
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- 2020
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10. Predicting Early Loss of Lateral Spread Response before Decompression in Hemifacial Spasm Surgery
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Ryan Wing-Yuk Chan, Yung-Hsiao Chiang, Yi-Yu Chen, Yi-Chen Chen, Jiann-Her Lin, and Yi-Syue Tsou
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hemifacial spasm (HFS) ,intraoperative monitoring (IOM) ,lateral spread response (LSR) ,Science - Abstract
Recent studies have shown the evocation of lateral spread response (LSR) due to the compression of the facial nerve in hemifacial spasm (HFS). Intraoperative monitoring (IOM) of LSR could help locate neurovascular conflicts and confirm adequate micro-vascular decompression (MVD) while treatment of hemifacial spasm (HFS). However, studies on early LSR loss before decompression in HFS surgery are sparse, indicating the need to understand various perceptions on it. Therefore, we retrospectively analyzed 50 adult HFS patients who underwent MVD during the period of September 2018–June 2021. We employed IOM combining traditional LSR (tLSR) and dual LSR (dLSR). One patient was excluded owing to the lack of LSR induction throughout the surgery, while 49 were divided into groups A (n = 14) and B (n = 35), designated as with or without early LSR loss groups, respectively, and offending vessels were analyzed. The mean age of group A patients was significantly younger (47.8 ± 8.6) than that of group B (53.9 ± 10.6) (p = 0.0393). The significant predominating offending vessel in group A was the anterior inferior cerebellar artery (AICA, 78.57%). However, group B included those with AICA (28.57%), posterior inferior cerebellar artery (PICA, 22.86%), vertebral artery (VA) involved (25.71%), and combined AICA and PICA (22.86%). Group B exhibited poorer clinical outcomes with more complications. Conclusively, early LSR loss might occur in the younger population, possibly due to the AICA offending vessel. The compression severity of offending vessels may determine the occurrence of early LSR loss.
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- 2021
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11. Identification of the Immunoglobulin E Epitope of Arginine Kinase, an Important Allergen from Crassostrea angulata
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Fei Huan, Shuai Gao, Tian-Jiao Han, Meng Liu, Meng-Si Li, Yang Yang, Yi-Yu Chen, Dong Lai, Min-Jie Cao, and Guang-Ming Liu
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General Chemistry ,General Agricultural and Biological Sciences - Published
- 2022
12. Investigation of Bi and In Elemental Addition in Solder Paste for DRAM Module Reliability Enhancement
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Yun-Ting Hsu, Yung-Sheng Zou, Yi-Yu Chen, Min-Hua Chung, Chong-Leong Gan, Fatima Macalalad, and Shriram Harihara Subramanian
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- 2023
13. Hypoallergenic derivatives of Scylla paramamosain heat-stable allergens alleviated food allergy symptoms in Balb/c mice
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Meng-Si Li, Fei Xia, Qing-Mei Liu, Yi-Yu Chen, Xiao Yun, Meng Liu, Gui-Xia Chen, Li Wang, Min-Jie Cao, and Guang-Ming Liu
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General Medicine ,Food Science - Abstract
Derivatives of Scylla paramamosain heat-stable allergens TM and MLC could alleviate food allergy symptoms in mice, also ability to induce blocking IgG antibodies, which offer a promising new strategy in immunotherapy for crab-allergic subjects.
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- 2022
14. Letter to the Editor: Comment on Chen B, et al. Treatment of Recurrent Axillary Osmidrosis: Trimming and Electrocoagulation of Apocrine Glands Under Direct Vision Through Double Incisions (Ann Plast Surg. 2021;87:e103-e106)
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Yi-Yu Chen, Noi Siong Lau, and Wen Tsao Ho
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Apocrine Glands ,Axilla ,Electrocoagulation ,Humans ,Hyperhidrosis ,Surgery - Published
- 2022
15. Dynamic Response Systems of Healthcare Mask Production to COVID-19: A Case Study of Korea
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EunSu Lee, Yi-Yu Chen, Melanie McDonald, and Erin O’Neill
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dynamic response systems ,COVID-19 ,pandemic ,production capacity ,demand management ,systems thinking ,Systems engineering ,TA168 ,Technology (General) ,T1-995 - Abstract
Korea initiated a new experiment, called a dynamic response system for open democratic societies as a principle to respond to the novel coronavirus (COVID-19). The global pandemic of COVID-19 led to a surge in demand for healthcare medical masks and respirators, and strained the global supply chain of mask production and distribution systems. This study provides a systemic view of critical personal protective equipment for both healthcare staff and the public to stop the spread of COVID-19. This study investigates the dynamic response system of healthcare mask production to the coronavirus and discusses lessons learned in view of systems thinking. The study shows that it is critical to developing a quick and dynamic response system to the evolving market conditions with flexible and agile operations. Visibility with transparency with information sharing with the public is also critical under global pandemic. Due to the shortage of mask supply, smart consumption is required along with collaboration with public and private sectors, as well as global organizations. Democratic leadership and a well-prepared strategic plan for long-term period are essential to the open society to prepare the global pandemic in the future. This study serves as a benchmark for dynamic and timely responses to the global pandemic.
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- 2020
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16. High-level expression and molecular characterization of a recombinant prolidase from Escherichia coli NovaBlue
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Tzu-Fan Wang, Meng-Chun Chi, Kuan-Ling Lai, Min-Guan Lin, Yi-Yu Chen, Huei-Fen Lo, and Long-Liu Lin
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Escherichia coli ,Gene expression ,Prolidase ,Organic co-solvents ,Chaotropic agent-induced denaturation ,Molecular characterization ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
Long-term use of organophosphorus (OP) compounds has become an increasing global problem and a major threat to sustainability and human health. Prolidase is a proline-specific metallopeptidase that can offer an efficient option for the degradation of OP compounds. In this study, a full-length gene from Escherichia coli NovaBlue encoding a prolidase (EcPepQ) was amplified and cloned into the commercially-available vector pQE-30 to yield pQE-EcPepQ. The overexpressed enzyme was purified from the cell-free extract of isopropyl thio-β-D-galactoside IPTG-induced E. coli M15 (pQE-EcPepQ) cells by nickel-chelate chromatography. The molecular mass of EcPepQ was determined to be about 57 kDa by 12% sodium dodecyl sulfate–polyacrylamide gel electrophoresis and the result of size-exclusion chromatography demonstrated that the enzyme was mainly present in 25 mM Tris–HCl buffer (pH 8.0) as a dimeric form. The optimal conditions for EcPepQ activity were 60 °C, pH 8.0, and 0.1 mM Mn2+ ion. Kinetic analysis with Ala-Pro as the substrate showed that the Km and kcat values of EcPepQ were 8.8 mM and 926.5 ± 2.0 s−1, respectively. The thermal unfolding of EcPepQ followed a two-state process with one well-defined unfolding transition of 64.2 °C. Analysis of guanidine hydrochloride (GdnHCl)-induced denaturation by tryptophan emission fluorescence spectroscopy revealed that the enzyme had a [GdnHCl]0.5,N-U value of 1.98 M. The purified enzyme also exhibited some degree of tolerance to various water/organic co-solvents. Isopropanol and tetrahydrofuran were very detrimental to the enzymatic activity of EcPepQ; however, other more hydrophilic co-solvents, such as formamide, methanol, and ethylene glycol, were better tolerated. Eventually, the non-negative influence of some co-solvents on both catalytic activity and structural stability of EcPepQ allows to adjust the reaction conditions more suitable for EcPepQ-catalyzed bioprocess.
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- 2018
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17. Linear Epitopes Play an Important Role in the Immunoglobulin G (IgG)/Immunoglobulin E (IgE)-Binding Capacity of Scy p 4
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Meng Liu, Meng-Si Li, Min-Jie Cao, Gui-Xia Chen, Guang-Ming Liu, Fei Huan, Qing-Mei Liu, Xiao Yun, Dong Lai, and Yi-Yu Chen
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biology ,Shellfish allergy ,Scylla paramamosain ,Shellfish Hypersensitivity ,General Chemistry ,Allergens ,Immunoglobulin E ,medicine.disease ,biology.organism_classification ,medicine.disease_cause ,Molecular biology ,Epitope ,Immunoglobulin G ,Dithiothreitol ,Epitopes ,chemistry.chemical_compound ,Allergen ,chemistry ,biology.protein ,medicine ,Iodoacetamide ,Humans ,General Agricultural and Biological Sciences - Abstract
Sarcoplasmic calcium-binding protein is a stable allergen in Scylla paramamosain and named Scy p 4. To explore the importance of linear epitopes in the immunoglobulin G (IgG)/immunoglobulin E (IgE)-binding capacity of Scy p 4, chemical denaturants were used to destroy the structure. Scy p 4 was reduced with dithiothreitol and subsequently alkylated with iodoacetamide (IAA). Furthermore, the structural analysis indicated that IAA-Scy p 4 was an unstructured protein. The inhibition enzyme-linked immunosorbent assay showed that IAA-Scy p 4 could inhibit the binding of Scy p 4 to sensitize serum, with inhibition rates reached 55%. Moreover, the linear mimotopes of Scy p 4 were predicted in silico. Three linear epitopes were verified by serological tests and named L-Scy p 4-1 (AA76-91), L-Scy p 4-2 (AA111-125), and L-Scy p 4-3 (AA137-146). Overall, these data provide an understanding of the relationship between the structure and allergenicity about Scy p 4, and the identified linear epitopes can be used for diagnosis and food processing of shellfish allergy.
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- 2021
18. Superenhancer drives a tumor-specific splicing variant of MARCO to promote triple-negative breast cancer progression
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Yun-Song Yang, Xi Jin, Qin Li, Yi-Yu Chen, Fenfang Chen, Hena Zhang, Ying Su, Yi Xiao, Gen-Hong Di, Yi-Zhou Jiang, Shenglin Huang, and Zhi-Ming Shao
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Multidisciplinary - Abstract
The transcription variation, leading to various forms of transcripts and protein diversity, remains largely unexplored in triple-negative breast cancers (TNBCs). Here, we presented a comprehensive analysis of RNA splicing in breast cancer to illustrate the biological function and clinical implications of tumor-specific transcripts (TSTs) arising from these splicing junctions. Aberrant RNA splicing or TSTs were frequently harbored in TNBC and were correlated with a poor outcome. We discovered a tumor-specific splicing variant of macrophage receptor with collagenous structure–TST (MARCO-TST), which was distinguished from myeloid cell-specific wild-type MARCO. MARCO-TST expression was associated with poor outcomes in TNBC patients and could promote tumor progression in vitro and in vivo. Mechanically, MARCO-TST interacted with PLOD2 and enhanced the stability of HIF-1α, which resulted in the metabolic dysregulation of TNBC to form a hypoxic tumor microenvironment. MARCO-TST was initiated from a de novo alternative transcription initiation site that was activated by a superenhancer. Tumors with MARCO-TST expression conferred greater sensitivity to bromodomain and extraterminal protein inhibitors. This treatment strategy was further validated in patient-derived organoids. In conclusion, our results revealed the transcription variation landscape of TNBC, highlighting MARCO-TST as a crucial oncogenic transcript and therapeutic target.
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- 2022
19. Hypoallergenic derivatives of
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Meng-Si, Li, Fei, Xia, Qing-Mei, Liu, Yi-Yu, Chen, Xiao, Yun, Meng, Liu, Gui-Xia, Chen, Li, Wang, Min-Jie, Cao, and Guang-Ming, Liu
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Mice ,Mice, Inbred BALB C ,Hot Temperature ,Brachyura ,Immunoglobulin G ,Animals ,Rabbits ,Allergens ,Immunoglobulin E ,Food Hypersensitivity - Abstract
The design of hypoallergenic derivatives is a new strategy for allergen-specific immunotherapy. Although hypoallergenic derivatives of
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- 2022
20. Surface-Functionalized Hyperbranched Poly(Amido Acid) Magnetic Nanocarriers for Covalent Immobilization of a Bacterial γ-Glutamyltranspeptidase
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Tzong-Yuan Juang, Shao-Ju Kan, Yi-Yu Chen, Yi-Lin Tsai, Min-Guan Lin, and Long-Liu Lin
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hyperbranched polymer ,immobilization ,magnetic nanocarrier ,Organic chemistry ,QD241-441 - Abstract
In this study, we synthesized water-soluble hyperbranched poly(amido acid)s (HBPAAs) featuring multiple terminal CO2H units and internal tertiary amino and amido moieties and then used them in conjunction with an in situ Fe2+/Fe3+ co-precipitation process to prepare organic/magnetic nanocarriers comprising uniformly small magnetic iron oxide nanoparticles (NP) incorporated within the globular HBPAAs. Transmission electron microscopy revealed that the HBPAA-γ-Fe2O3 NPs had dimensions of 6–11 nm, significantly smaller than those of the pristine γ-Fe2O3 (20–30 nm). Subsequently, we covalently immobilized a bacterial γ-glutamyltranspeptidase (BlGGT) upon the HBPAA-γ-Fe2O3 nanocarriers through the formation of amide linkages in the presence of a coupling agent. Magnetization curves of the HBPAA-γ-Fe2O3/BlGGT composites measured at 300 K suggested superparamagnetic characteristics, with a saturation magnetization of 52 emu g−1. The loading capacity of BlGGT on the HBPAA-γ-Fe2O3 nanocarriers was 16 mg g−1 support; this sample provided a 48% recovery of the initial activity. The immobilized enzyme could be recycled 10 times with 32% retention of the initial activity; it had stability comparable with that of the free enzyme during a storage period of 63 days. The covalent immobilization and stability of the enzyme and the magnetization provided by the HBPAA-γ-Fe2O3 NPs suggests that this approach could be an economical means of depositing bioactive enzymes upon nanocarriers for BlGGT-mediated bio-catalysis.
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- 2014
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21. Mutational Analysis of a Highly Conserved PLSSMXP Sequence in the Small Subunit of Bacillus licheniformis γ-Glutamyltranspeptidase
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Meng-Chun Chi, Huei-Fen Lo, Min-Guan Lin, Yi-Yu Chen, Tzu-Fan Wang, and Long-Liu Lin
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γ-Glutamyltranspeptidase ,Bacillus licheniformis ,self-activation ,transpeptidation activity ,deletion analysis ,Ala-scanning mutagenesis ,Microbiology ,QR1-502 - Abstract
A highly conserved 458PLSSMXP464 sequence in the small subunit (S-subunit) of an industrially important Bacillus licheniformis γ-glutamyltranspeptidase (BlGGT) was identified by sequence alignment. Molecular structures of the precursor mimic and the mature form of BlGGT clearly reveal that this peptide sequence is in close spatial proximity to the self-processing and catalytic sites of the enzyme. To probe the role of this conserved sequence, ten mutant enzymes of BlGGT were created through a series of deletion and alanine-scanning mutagenesis. SDS-PAGE and densitometric analyses showed that the intrinsic ability of BlGGT to undergo autocatalytic processing was detrimentally affected by the deletion-associated mutations. However, loss of self-activating capacity was not obviously observed in most of the Ala-replacement mutants. The Ala-replacement mutants had a specific activity comparable to or greater than that of the wild-type enzyme; conversely, all deletion mutants completely lost their enzymatic activity. As compared with BlGGT, S460A and S461S showed greatly enhanced kcat/Km values by 2.73- and 2.67-fold, respectively. The intrinsic tryptophan fluorescence and circular dichroism spectral profiles of Ala-replacement and deletion mutants were typically similar to those of BlGGT. However, heat and guanidine hydrochloride-induced unfolding transitions of the deletion-associated mutant proteins were severely reduced as compared with the wild-type enzyme. The predictive mutant models suggest that the microenvironments required for both self-activation and catalytic reaction of BlGGT can be altered upon mutations.
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- 2019
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22. Site-Directed Mutations of Calcium-Binding Sites Contribute to Reducing the Immunoreactivity of the EF-Hand Sarcoplasmic Calcium-Binding Protein in Scylla paramamosain
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Meng-Si Li, Guang-Ming Liu, Min-Jie Cao, Fei Xia, Tengchuan Jin, Dong Lai, Gui-Xia Chen, Meng-Jun Hu, Xiao Yun, and Yi-Yu Chen
- Subjects
0106 biological sciences ,chemistry.chemical_classification ,biology ,EF hand ,010401 analytical chemistry ,Sarcoplasm ,Scylla paramamosain ,chemistry.chemical_element ,General Chemistry ,Calcium ,biology.organism_classification ,01 natural sciences ,Molecular biology ,0104 chemical sciences ,Amino acid ,chemistry ,Calcium-binding protein ,Binding site ,General Agricultural and Biological Sciences ,010606 plant biology & botany ,Conformational epitope - Abstract
In order to reduce the immunoreactivity of sarcoplasmic calcium-binding protein (SCP), site-directed mutations were used to replace key amino acids in the conformational epitopes and calcium-binding sites. The mutant SCPs (mSCPs) were expressed in Escherichia coli, and their immunoreactivities were analyzed using iELISA and basophil activation assays. Furthermore, the structural changes of mSCPs were determined from the circular dichroism spectra. The iELISA results showed that mSCPs could effectively inhibit the binding of wild-type SCP (wtSCP) to sensitive serum, with inhibition rates that reached 90%. Moreover, mSCPs could downregulate the expression levels of CD63 and CD203c on the basophil surface. Compared with wtSCP, the peak values were significantly changed, and the calcium binding ability was impaired, which explained the decline in immunoreactivities of the mSCPs. All of the data confirmed that this approach was effective in reducing the immunoreactivity of SCP and could be applied to other shellfish allergens.
- Published
- 2020
23. A case of alpha-fetoprotein-producing esophageal adenocarcinoma
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Yi-Yu Chen, Wen-Hung Hsu, Huang-Ming Hu, Deng-Chyang Wu, and Wen-Yi Lin
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Adenocarcinoma ,Alpha-fetoprotein ,Esophageal cancer ,Medicine (General) ,R5-920 - Abstract
Alpha-fetoprotein is a well-known tumor marker in the screening and follow-up of hepatocellular carcinoma. In Taiwanese society, a high prevalence of hepatitis and hepatoma and elevation of alpha-fetoprotein associated with liver function impairment usually suggested clinics undertake further examination for liver or genital tumor. We report the case of 45-year-old man who was found to have an alpha-fetoprotein-producing esophageal adenocarcinoma with an initial presentation of liver function impairment and rapid elevation of alpha-fetoprotein. Esophageal cancer was diagnosed via endoscope and a biopsy proved the presence of adenocarcinoma. A small endoscopic biopsy specimen failed to identify the alpha-fetoprotein positive tumor cell. Esophagectomy was performed and histopathological study of surgical specimen revealed grade II adenocarcinoma with regional metastatic lymphadenopathy. Immunohistochemical study was focal positive for alpha-fetoprotein. Serum alpha-fetoprotein declined transiently after esophagectomy and fluctuation of alpha-fetoprotein level was noted during the treatment with adjuvant chemotherapy. Finally, 19 months after the operation, the patient died due to multiple organ metastases with multiple organ failure. Thus, a small specimen for upper endoscopy may not be sufficient in the presence of alpha-fetoprotein-producing adenocarcinoma. Monitoring of serum alpha-fetoprotein may be useful in the evaluation and follow-up of esophageal alpha-fetoprotein-producing adenocarcinoma.
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- 2013
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24. Vancomycin population pharmacokinetics and dosing recommendations in haematologic malignancy with augmented renal clearance children
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Tao-Tao Liu, Qiao-Chuan Li, Ming Chen, Ren Zhang, Chunle Lv, Jie-Jiu Lu, and Yi-Yu Chen
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Male ,medicine.medical_specialty ,Adolescent ,Dose ,Urology ,Microbial Sensitivity Tests ,Kidney Function Tests ,Models, Biological ,030226 pharmacology & pharmacy ,03 medical and health sciences ,0302 clinical medicine ,Pharmacokinetics ,Vancomycin ,Haematologic malignancy ,medicine ,Humans ,Distribution (pharmacology) ,Pharmacology (medical) ,030212 general & internal medicine ,Dosing ,Child ,Retrospective Studies ,Pharmacology ,Dose-Response Relationship, Drug ,business.industry ,Retrospective cohort study ,Bacterial Infections ,Anti-Bacterial Agents ,Area Under Curve ,Child, Preschool ,Hematologic Neoplasms ,Female ,business ,Monte Carlo Method ,Clearance ,medicine.drug - Abstract
What is known and objectives Augmented renal clearance (ARC) is characterized by enhanced renal clearance, which leads to insufficient vancomycin exposure and treatment failure. In haematologic malignancy patients, determination of optimal vancomycin dosage is essential because of high stake of life-threatening bacterial infection and increased clearance. The aim of this study was to describe vancomycin pharmacokinetic parameters in haematologic malignancy with augmented renal clearance children and define the appropriate dosing regimen to achieve an AUC0-24h /MIC ≥400. Methods Hematologic malignancy with ARC children was enrolled in this retrospective study. The vancomycin PPK model was established by non-linear mixed-effects modelling programme. Goodness-of-fit (GOF) plots, non-parametric bootstrap, normalized prediction distribution error (NPDE) and visual predictive checks (VPCs) were carried out for internal evaluation of the final model. Monte Carlo simulation method was used to stimulate the optimal dosage regimens. Results Fifty-three patients with 106 samples were included. A one-compartment model with first-order elimination was developed, and the final model was as follows: CL (L/h) = 6.32×(WT/70)0.75 × e0.0467 ; V(L) = 39.6×(WT/70), where WT denotes weight (kg). The internal validation of the model showed a good prediction performance. Monte Carlo simulation results showed that when MIC was 0.5 mg/L or 1 mg/L, the recommended doses to achieve a target of AUC0-24h /MIC ≥400 were 25 to 40 and 50 to 75 mg/kg/d, respectively. With decreasing weight, the recommended dosage to achieve an AUC0-24h /MIC ≥400 increased. What is new and conclusion A one-compartment vancomycin PPK model was established in haematologic malignancy with augmented renal clearance children with weight with allometric scaling as a significant covariate. When MIC was 1 mg/L, current recommended paediatric dosages were insufficient in haematologic malignancy with augmented renal clearance children and should be increased.
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- 2020
25. HER2 overexpression in ductal carcinoma in situ is associated with ipsilateral breast cancer recurrence after conservative surgery
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Jin-Yu Ge, Yi-Yu Chen, Kefeng Ding, Ke-Da Yu, and Di-He Gong
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In situ ,Cancer Research ,medicine.medical_specialty ,business.industry ,Ductal carcinoma ,Cancer recurrence ,Breast cancer ,human epidermal growth factor receptor 2 (HER2) ,ipsilateral breast cancer recurrence (IBTR) ,Oncology ,ductal carcinoma in situ (DCIS) ,Ipsilateral breast ,Medicine ,Original Article ,Radiology, Nuclear Medicine and imaging ,Radiology ,skin and connective tissue diseases ,business ,neoplasms - Abstract
Background A few patients with ductal carcinoma in situ (DCIS) after breast conservative surgery would develop ipsilateral breast cancer recurrence (IBTR), either invasive or non-invasive. Study of accurate predictive biomarkers for IBTR risk are warranted. We analyzed the association of human epidermal growth factor receptor 2 (HER2) status with IBTR after conservative surgery. Methods We chose 213 cases of DCIS diagnosed between 2005 and 2010. Immunohistochemistry was performed for ER, PR, and HER2. The primary endpoint was IBTR. Kaplan-Meier plot was used for univariate survival analysis with log-rank test. Cox proportional hazards model was used for multivariate analysis. Hazard ratio (HR) and 95% confidence interval (CI) were calculated. Results With a median follow-up 80 months, there were 29 IBTR events. In univariate analysis, patients with high grade, ER-negative, and HER2-positive breast cancers tended to have an increased risk of IBTR. In multivariate analysis, grade III and HER2-positivity were independent predictive factors for IBTR. HER2-positive DCIS had a 2.6-time risk of recurrence compared with those with HER2-negative tumors (HR=2.60; 95% CI, 1.02–6.98; P=0.044). For HER2-equivocal cases, the HR was 1.59 (95% CI, 0.40–6.34; P=0.50) compared with HER2-negative cases. Moreover, annual recurrence pattern according to HER2 status showed that HER2-positive DCIS had a recurrence peak at 3–5 years (0.3% per annum) while the annual recurrence rate of HER2-negative DCIS was very low (less than 0.1% per annum). Conclusions This study suggests that of HER2-overexpression might contribute to IBTR in DCIS after breast conservation.
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- 2020
26. Identification and Cross-reactivity Analysis of Sarcoplasmic-Calcium-Binding Protein: A Novel Allergen in Crassostrea angulata
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Tian-Jiao Han, Meng-Si Li, Meng Liu, Guang-Ming Liu, Min-Jie Cao, Fei Huan, Yi-Yu Chen, Fei Xia, and Gui-Xia Chen
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0106 biological sciences ,Oyster ,animal structures ,medicine.disease_cause ,01 natural sciences ,Cross-reactivity ,law.invention ,Allergen ,law ,biology.animal ,medicine ,Escherichia coli ,Shellfish ,biology ,Chemistry ,010401 analytical chemistry ,food and beverages ,General Chemistry ,biology.organism_classification ,0104 chemical sciences ,Open reading frame ,Biochemistry ,Recombinant DNA ,Crassostrea ,General Agricultural and Biological Sciences ,010606 plant biology & botany - Abstract
Oysters are an important shellfish group known to cause food allergy; however, knowledge of their sensitization components and cross-reactivity is limited. This study aimed to identify a novel allergen in Crassostrea angulata and investigate its cross-reactivity. To this end, a 20 kDa protein was purified from oyster and confirmed to be a sarcoplasmic-calcium-binding protein (SCP) by LC-MS/MS. A 537 bp open reading frame was obtained from oyster SCP total RNA, which encoded 179 amino acids, and was expressed in Escherichia coli. According to the circular dichroism results, digestion assay, and inhibition ELISA, the recombinant SCP (rSCP) exhibited similar physicochemical properties and IgG-binding activity to native SCP. rSCP displayed stronger IgE-binding activity by immunological method. Moreover, a different intensity of cross-reactivity and sequence homology were demonstrated between shellfish species. Collectively, these findings provide novel insight into shellfish allergens, which can be used to aid in the in vitro diagnosis of oyster-sensitized patients.
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- 2020
27. Juvenile hormone-mediated reproduction induced by a sublethal concentration of imidacloprid in Cyrtorhinus lividipennis (Hemiptera: Miridae)
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Yi-Yu Chen, Yao Li, Zhongxian Lv, Jianqi Liu, Jun Zhu, Fang Liu, and Ying-Ying Tang
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0106 biological sciences ,0301 basic medicine ,biology ,media_common.quotation_subject ,Insect ,biology.organism_classification ,Fecundity ,01 natural sciences ,Miridae ,Andrology ,010602 entomology ,03 medical and health sciences ,chemistry.chemical_compound ,Vitellogenin ,030104 developmental biology ,chemistry ,Imidacloprid ,Insect Science ,parasitic diseases ,Juvenile hormone ,biology.protein ,Reproduction ,Nymph ,media_common - Abstract
The Hemipteran predator, Cyrtorhinus lividipennis, feeds on the eggs and nymphs of rice planthoppers and leafhoppers. We previously demonstrated that sublethal concentrations of imidacloprid stimulated the reproduction of C. lividipennis. Considering the essential roles of juvenile hormone (JH) in insect reproduction, we speculated that sublethal concentrations of imidacloprid may stimulate the reproduction of C. lividipennis by regulating JH level. To test this, we cloned C. lividipennis JH acid methyl transferase (ClJHAMT) and JH esterase (ClJHE), which are responsible for JH biosynthesis and degradation genes, respectively. We then knocked down ClJHAMT by injecting dsRNA into C. lividipennis nymphs and found that emerging female adults exhibited 88.8% lower expression of the vitellogenin gene (ClVg) and the number of eggs was reduced by 41.5% as compared with controls. Silencing ClJHE increased ClVg mRNA expression by 275.0% but did not affect fecundity. A sublethal concentration of imidacloprid (LC20) increased the JH titer in females by 35.3% and 60.6% at 24 and 48 h post-emergence, respectively. In treatments containing both imidacloprid and dsJHAMT, the silencing of CLJHAMT reduced the number of eggs produced by adult females by 21.4% as compared to the control (imidacloprid + dsGFP). Our results indicated that sublethal concentration of imidacloprid may induce C. lividipennis reproduction by upregulating JH level via JHAMT. The finding could provide valuable information for improved integration of C. lividipennis and insecticides in pest management.
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- 2020
28. Higher NAFLD fibrosis score is associated with impaired eGFR
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Jeng-Fu Yang, Chia-Yen Dai, Shu-Ching Lin, Chao-Ling Wang, Hung-Yi Chuang, Wen-Yi Lin, Yi-Shan Tsai, Meng-Hsuan Hsieh, Yi-Yu Chen, Yu-Kuei Hsu, Ming-Lung Yu, Chao-Kuan Huang, Kuan-Ta Wu, Wan-Long Chuang, Chia-Yi Lin, and Ning-Chia Chang
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Adult ,Liver Cirrhosis ,Male ,medicine.medical_specialty ,Waist ,Taiwan ,Renal function ,Disease ,Risk Assessment ,Severity of Illness Index ,Non-alcoholic Fatty Liver Disease ,Risk Factors ,Internal medicine ,Fibrosis score ,Humans ,Medicine ,Renal Insufficiency, Chronic ,Risk factor ,Retrospective Studies ,Preventive healthcare ,lcsh:R5-920 ,business.industry ,Fatty liver ,General Medicine ,Middle Aged ,medicine.disease ,ROC Curve ,Female ,business ,lcsh:Medicine (General) ,Biomarkers ,Glomerular Filtration Rate ,Kidney disease - Abstract
Background/Purpose: Chronic kidney disease (CKD) has become a worldwide health problem, leading to high morbidity and mortality, and non-alcoholic fatty liver disease (NAFLD) is considered a risk factor for CKD. The aim of this study was to explore the relationship between NAFLD fibrosis score (NFS) and the estimated glomerular filtration rate (eGFR), and identify possible risk factors related to the NFS among Taiwanese subjects. Methods: Subjects were enrolled from the database of the Department of Preventive Medicine of Kaohsiung Municipal Hsiao-Kang Hospital. The eGFR was calculated according to the Taiwanese Modification of Diet in Renal Disease (TMDRD) equation, and the NFS was employed to evaluate the fibrotic level. Results: In total, 11,376 subjects were enrolled in this study, with a mean age of 52.0 ± 6.81 years, including 4529 (39.8%) males. A fasting sugar level ≥100 mg/dL (OR = 1.70, 95% CI = 1.52–1.87) and an abnormal waist circumference (OR = 1.81, 95% CI = 1.65–1.99) were significant factors associated with NFS (p
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- 2020
29. The advance of adjuvant treatment for triple-negative breast cancer
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Zhi-Ming Shao, Wen-Jia Zuo, Yi-Yu Chen, Ke-Da Yu, and Jing-Yu Ge
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Oncology ,Cancer Research ,medicine.medical_specialty ,Taxane ,Anthracycline ,business.industry ,medicine.medical_treatment ,prognostic factors ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,targeted therapy ,medicine.disease ,Targeted therapy ,adjuvant chemotherapy ,Capecitabine ,Clinical trial ,Breast cancer ,Internal medicine ,triple-negative breast cancer ,medicine ,business ,Adjuvant ,RC254-282 ,Triple-negative breast cancer ,medicine.drug - Abstract
Triple-negative breast cancer (TNBC) is a subtype of breast cancer characterized by its highly aggressive behavior, early recurrence, and poor outcomes, when compared with other subtypes. Due to the absence of the estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 expression, TNBC lacks meaningful biomarkers and an effective therapeutic strategy. Chemotherapy remains the main adjuvant treatment for patients with TNBC. Anthracycline/taxane-based regimens are the standard of care in adjuvant settings. The addition of capecitabine or platinum may offer extra benefits to patients with TNBC, but at the cost of increased toxicity or adverse events. Dose-dense chemotherapy may enhance treatment efficacy in patients who are able to tolerate the treatment regimen, especially in high-risk patients. As a heterogenous disease, TNBC can be classified into several molecular subtypes according to genomic or transcriptional features, which may indicate potential targets for more precise and individualized treatment strategies. With our increased understanding of signal pathways associated with TNBC, as well as the discovery of novel biomarkers indicative of TNBC prognosis, several new therapeutic options are under investigation, and some have already reported good results. In this review, we summarized the current conventional therapeutic strategies and emerging clinical trials regarding adjuvant treatment for TNBC. Furthermore, we evaluated the prognostic value of several potential targets and the progress of targeted therapy in TNBC, both in neoadjuvant and adjuvant settings.
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- 2021
30. Two hypo-allergenic derivatives lacking the dominant linear epitope of Scy p 1 and Scy p 3
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Meng Liu, Meng-Si Li, Guang-Ming Liu, Yang Yang, Yi-Yu Chen, Fei Xia, Qing-Mei Liu, Gui-Xia Chen, Min-Jie Cao, and Li Wang
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chemistry.chemical_classification ,Myosin light-chain kinase ,Linear epitope ,biology ,Chemistry ,Brachyura ,Mutant ,Scylla paramamosain ,General Medicine ,Tropomyosin ,Allergens ,Immunoglobulin E ,biology.organism_classification ,Epitope ,Analytical Chemistry ,Epitopes ,Protein structure ,Enzyme ,Biochemistry ,Animals ,Humans ,Food Science - Abstract
Scylla paramamosain frequently elicits IgE-mediated type-I hypersensitivity reactions. Molecular candidates for crab allergen-specific immunotherapy have not been studied previously. In this study, reduced and alkylated (red/alk) derivatives with destroyed conformational epitopes and mutant derivatives (mtALLERGEN) with deleted heat/digestion-stable linear epitopes were produced of tropomyosin and myosin light chain. Structural changes and the allergenicity of derivatives was analyzed. Compared with wild-type allergens, red/alk derivatives had dramatically altered protein structures, whereas mtALLERGEN showed slightly structural effects. Enzyme linked immunosorbent assay revealed the heterogeneous epitope-recognition patterns with derivatives among 29 crab-sensitised patients, of whom 13% and 62% recognised conformational and linear epitopes, respectively, whereas 25% recognised both epitope types to the same extent. Furthermore, mtALLERGEN could not bind to IgE or induce basophil activation in some patients. These results imply that hypo-allergenic derivatives of crab myofibril allergens that specifically lacked linear epitopes may serve as viable candidates for immunotherapy.
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- 2021
31. Site-Directed Mutations of Calcium-Binding Sites Contribute to Reducing the Immunoreactivity of the EF-Hand Sarcoplasmic Calcium-Binding Protein in
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Yi-Yu, Chen, Meng-Si, Li, Xiao, Yun, Fei, Xia, Meng-Jun, Hu, Tengchuan, Jin, Min-Jie, Cao, Dong, Lai, Guixia, Chen, and Guang-Ming, Liu
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Epitopes ,Brachyura ,Circular Dichroism ,Calcium-Binding Proteins ,Mutagenesis, Site-Directed ,Animals ,Humans ,Amino Acid Sequence ,Shellfish Hypersensitivity ,Immunoglobulin E ,Sequence Alignment ,Arthropod Proteins ,Basophils - Abstract
In order to reduce the immunoreactivity of sarcoplasmic calcium-binding protein (SCP), site-directed mutations were used to replace key amino acids in the conformational epitopes and calcium-binding sites. The mutant SCPs (mSCPs) were expressed in
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- 2020
32. Systematic external evaluation of reported population pharmacokinetic models of vancomycin in Chinese children and adolescents
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Tao-Tao Liu, Jie-Jiu Lu, Yinyi Wei, Li Jing, Yi-Yu Chen, Chunle Lv, Ming Chen, Chengxin Li, Ren Zhang, and Siru Zhou
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Male ,China ,Adolescent ,Population ,Bayesian probability ,Kidney Function Tests ,030226 pharmacology & pharmacy ,Models, Biological ,03 medical and health sciences ,0302 clinical medicine ,Pharmacokinetics ,Vancomycin ,Covariate ,Statistics ,Medicine ,Humans ,Pharmacology (medical) ,Computer Simulation ,030212 general & internal medicine ,Dosing ,Predictability ,education ,Child ,Pharmacology ,education.field_of_study ,medicine.diagnostic_test ,business.industry ,Body Weight ,Age Factors ,Reproducibility of Results ,Bayes Theorem ,Anti-Bacterial Agents ,Therapeutic drug monitoring ,Child, Preschool ,Female ,business ,medicine.drug - Abstract
WHAT IS KNOWN AND OBJECTIVES Various population pharmacokinetic (PopPK) models for vancomycin in children and adolescents have been constructed to optimize the therapeutic regimen of vancomycin. However, little is known about their predictive performance when extrapolated to different clinical centres. Therefore, the aim of this study was to externally validate the predictability of vancomycin PopPK model when extrapolated to different clinical centres and verify its applicability in an independent data set. METHODS The published models were screened from the literature and evaluated using an external data set of a total of 451 blood concentrations of vancomycin measured in 220 Chinese paediatric patients. Prediction- and simulation-based diagnostics and Bayesian forecasting were performed to evaluate the predictive performance of the models. RESULTS Ten published PopPK models were assessed. Prediction-based diagnostics showed that none of the investigated models met all the standards (median prediction error (MDPE) ≤ ±20%, median absolute prediction error (MAPE) ≤30%, PE% within ±20% (F20 ) ≥35% and PE% within ±30% (F30 ) ≥50%), indicating unsatisfactory predictability. In simulation-based diagnostics, both the visual predictive checks (VPC) and the normalized prediction distribution error (NPDE) indicated misspecification in all models. Bayesian forecasting results showed that the accuracy and precision of individual predictions could be significantly improved with one or two prior observations, but frequent monitoring might not be necessary in the clinic, since Bayesian forecasting identified that greater number of samples did not significantly improve the predictability. Model 3 established by Moffett et al showed better predictability than other models. WHAT IS NEW AND CONCLUSION The 10 published models performed unsatisfactorily in prediction- and simulation-based diagnostics; none of the published models was suitable for designing the initial dosing regimens of vancomycin. Pharmacokinetic characteristics and covariates, such as weight, renal function, age and underlying disease should be taken into account when extrapolating the vancomycin model. Bayesian forecasting combined with therapeutic drug monitoring based on model 3 can be used to adjust vancomycin dosing regimens.
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- 2020
33. Comparison between Single-Dose Esomeprazole- and Pantoprazole-Based Triple Therapy on the Effectiveness for Helicobacter pylori Eradication in Taiwanese Population
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Hsiang-Yao Shih, Sophie S. W. Wang, Chao-Hung Kuo, Fu-Chen Kuo, Yi-Yu Chen, Meng-Chieh Wu, Bi-Chuang Weng, Yi-Chern Lee, Chi-Tan Hu, Deng-Chyang Wu, and Yen-Hsu Chen
- Subjects
Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Background and Study Aims. To compare the effectiveness of two regimens, single-dose esomeprazole- and pantoprazole-based triple therapy, for Helicobacter pylori (H. pylori) eradication. Patients and Methods. A total of 453 patients were enrolled for H. pylori eradication. They were randomly assigned to either EAC group (Esomeprazole 40 mg once daily, Amoxicillin 1 g twice daily, Clarithromycin 500 mg twice daily for 7 days) or PAC group (Pantoprazole 40 mg twice daily, Amoxicillin 1 g twice daily, Clarithromycin 500 mg twice daily for 7 days). Follow-up endoscopy or urea breath test was scheduled 12–16 weeks after the eradication to evaluate the therapeutic response. Results. Higher eradication rate in EAC group than PAC group was shown by intention-to-treat analysis (EAC 72% versus PAC 55%, P
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- 2012
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34. Biocatalytic Synthesis of γ-glutamyl-L-leucine, a Kokumi-Imparting Dipeptide, byBacillus licheniformisγ-Glutamyltranspeptidase
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Tzu-Fan Wang, Yi-Yu Chen, Yen-Chung Lee, Meng-Chun Chi, Long-Liu Lin, and Min-Guan Lin
- Subjects
0301 basic medicine ,Dipeptide ,biology ,γ glutamyltranspeptidase ,biology.organism_classification ,Applied Microbiology and Biotechnology ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,chemistry ,Biochemistry ,Bacillus licheniformis ,Leucine ,Food Science ,Biotechnology - Abstract
Several γ-glutamyl compounds are known to have favorable features for a variety of biotechnological and pharmaceutical applications. However, so far only a limited number of γ-glutamyl compounds ha...
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- 2018
35. Transverse vibration analysis for piezoceramic rectangular plates using Ritz's method with equivalent constants
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Chi-Hung Huang and Yi-Yu Chen
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Piezoelectric ceramics -- Mechanical properties ,Finite element method -- Usage ,Numerical analysis ,Business ,Electronics ,Electronics and electrical industries - Abstract
The transverse vibration of piezoceramic rectangular thin plates is investigated theoretically and experimentally using the Ritz's method incorporated with the defined equivalent constant. Numerical calculations using the finite-element method are performed, and the results are compared with theoretical analysis and experimental results wherein excellent agreements are obtained for results of both resonant frequencies and mode shapes.
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- 2006
36. Application of Bacillus licheniformis γ-glutamyltranspeptidase to the biocatalytic synthesis of γ-glutamyl-phenylalanine
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Meng-Chun Chi, Tzu-Fan Wang, Huei-Fen Lo, Yi-Yu Chen, Long-Liu Lin, and Min-Guan Lin
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0106 biological sciences ,0301 basic medicine ,Stereochemistry ,Bioengineering ,Phenylalanine ,Mass spectrometry ,digestive system ,01 natural sciences ,Applied Microbiology and Biotechnology ,law.invention ,03 medical and health sciences ,law ,010608 biotechnology ,Bacillus licheniformis ,Chromatography ,biology ,γ glutamyltranspeptidase ,Chemistry ,Enzymatic synthesis ,biology.organism_classification ,digestive system diseases ,Glutamine ,030104 developmental biology ,Biocatalysis ,Recombinant DNA ,Agronomy and Crop Science ,Food Science ,Biotechnology - Abstract
Several γ-glutamyl compounds are known to have attractive features for food industry applications. In this study, we report a straightforward procedure for the biocatalytic synthesis of γ-glutamyl-phenylalanine (γ-Glu-Phe) using recombinant Bacillus licheniformis γ-glutamyltranspeptidase ( Bl GGT). The qualitative analysis of reaction products was carried out by thin-layer chromatography technique and computer-assisted image analysis. The optimized conditions for the biocatalytic process were pH 9.0, 50 °C, l -glutamine and l -phenylalanine in a 1:1 ratio, and Bl GGT at a working concentration of 2.0 U/ml. Preparative synthesis of γ-Glu-Phe was also performed at mmol scale. The desired product from the reaction mixture was then verified by mass spectrometry/nuclear magnetic resonance analyses. Strikingly, the experimental results suggest the high potentiality of Bl GGT-catalyzed reaction in the enzymatic synthesis of γ-glutamyl peptides.
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- 2017
37. Effect of music on level of anxiety in patients undergoing colonoscopy without sedation
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Chia-Yen Dai, Chia I. Lin, Yu Yin Lin, Meng Hsuan Hsieh, Hsiang Ju Kuo, Chia Hui Ko, Jeng Fu Yang, Yi Yu Chen, Shu-Chi Wang, and Kuan Ta Wu
- Subjects
Adult ,Male ,medicine.medical_specialty ,Multivariate analysis ,Sedation ,Conscious Sedation ,Colonoscopy ,Kevin Kern ,light music ,behavioral disciplines and activities ,03 medical and health sciences ,0302 clinical medicine ,colonoscopy ,medicine ,Humans ,Active listening ,Psychiatry ,Adverse effect ,Medicine(all) ,lcsh:R5-920 ,030504 nursing ,medicine.diagnostic_test ,business.industry ,General Medicine ,Odds ratio ,Middle Aged ,anxiety ,humanities ,Classical music ,Physical therapy ,Anxiety ,Female ,030211 gastroenterology & hepatology ,medicine.symptom ,lcsh:Medicine (General) ,0305 other medical science ,business ,human activities ,Music - Abstract
Background Listening to music can be a noninvasive method for reducing the anxiety level without any adverse effects. The aim of this study was to explore whether music can reduce anxiety and to compare two different styles of music, informal classical music and light music, to ascertain the more effective style of music in reducing anxiety in patients undergoing colonoscopy without sedation. Methods This study enrolled 138 patients who underwent colonoscopy without sedation during a general health examination from February 2009 to January 2015. The patients were randomly assigned to a group that did not listen to music, a group that listened to music by David Tolley, or a group that listened to music by Kevin Kern. The State-Trait Anxiety Inventory was used to evaluate the status of anxiety. Results A trend test for mild anxiety was performed on the patients in the three groups, and a significant trend was noted ( p =0.017 for all patients; p =0.014 for analysis by sex). Multivariate analysis for mild anxiety on the patients in each group was also performed in this study, and music by Kevin Kern was found to have the lowest odds ratio (Odds ratio=0.34, p =0.045). Conclusion Listening to music, especially music by Kevin Kern, reduced the level of anxiety in patients undergoing colonoscopy examination without sedation.
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- 2017
38. Cloning, Expression, and Epitope Identification of Myosin Light Chain 1: An Allergen in Mud Crab
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Xin-Rong He, Meng-Si Li, Meng Liu, Min-Jie Cao, Guang-Ming Liu, Li Wang, Yi-Yu Chen, Gui-Xia Chen, Fei Xia, and Tian-Liang Bai
- Subjects
0106 biological sciences ,Myosin light-chain kinase ,Myosin Light Chains ,Brachyura ,Scylla paramamosain ,Dot blot ,medicine.disease_cause ,01 natural sciences ,Epitope ,Cell Degranulation ,law.invention ,Arthropod Proteins ,Epitopes ,Open Reading Frames ,Allergen ,law ,medicine ,Animals ,Humans ,Amino Acid Sequence ,Mast Cells ,Cloning, Molecular ,biology ,Chemistry ,010401 analytical chemistry ,General Chemistry ,Allergens ,biology.organism_classification ,0104 chemical sciences ,Basophil activation ,Open reading frame ,Biochemistry ,Recombinant DNA ,General Agricultural and Biological Sciences ,Sequence Alignment ,010606 plant biology & botany - Abstract
Mud crab (Scylla paramamosain) is a commonly consumed seafood as a result of its high nutritional value; however, it is associated with food allergy. The current understanding of crab allergens remains insufficient. In the present study, an 18 kDa protein was purified from crab muscle and confirmed to be myosin light chain 1 (MLC1) by matrix-assisted laser desorption/ionization-tandem time-of-flight mass spectrometry. Total RNA was isolated and amplified to obtain a MLC1 open reading frame of 462 bp, encoding 154 amino acids. A structural analysis revealed that recombinant MLC1 (rMLC1) expressed in Escherichia coli contained α-helix and random coil. Moreover, rMLC1 displayed strong immunoactivity by dot blot and a basophil activation test. Furthermore, seven allergenic epitopes of MLC1 were predicted, and five critical epitope regions were identified by an inhibition enzyme-linked immunosorbent assay and human mast cell degranulation assay. This comprehensive research of an allergen helps to conduct component-resolved diagnoses and immunotherapies related to crab allergies.
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- 2019
39. P100 Bidirectional association between human Immunodeficiency virus and psoriasis: systematic review of cohort studies
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Tao-Hsin Tung, Yu-Hsien Cheng, and Yi-Yu Chen
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medicine.medical_specialty ,business.industry ,Incidence (epidemiology) ,Autoantibody ,Cochrane Library ,medicine.disease ,Psoriatic arthritis ,Acquired immunodeficiency syndrome (AIDS) ,Psoriasis ,Internal medicine ,medicine ,business ,Risk assessment ,Cohort study - Abstract
Background Human immunodeficiency viral (HIV) induce production of autoantibodies could attack the person’s immune system. Patients with HIV infection might present with more severe complications of psoriasis, a chronic autoimmune inflammatory skin disease. But there were insufficient evidences prove the risk between HIV and psoriasis. Objectives Systematic review was performed to explore the association between HIV and psoriasis, to provide risk assessment and improve patient outcomes. Methods We used the search strategy: ‘(psoriasis OR psoriatic arthritis) AND (AIDS OR HIV OR acquired immune deficiency syndrome OR human immunodeficiency virus OR CD4 OR CCR5-delta32)’ in searching the Cochrane Library, PubMed and EMBASE electronic databases without language restrictions in May 2018. Results Four cohort study (187954 participants) were included in this review. Studies report the results of the incidences of psoriasis with patients with HIV infection. While the total incidence on current data of psoriasis was 0.46%, HIV patients had higher risk than normal for developing newly diagnosed with psoriasis whether receiving substance treatment or not. However, psoriasis patients in general do not appear to have increased infection rates of HIV. Conclusion The available evidence shows that HIV is a potential risk factor for psoriasis. The evidence at the present stage only supports the relationship between HIV infection and psoriasis, but more literature is needed to support such relevance. Disclosure No significant relationships.
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- 2019
40. A Data Mining Approach for Optimizing Manufacturing Parameters of Wire Bonding Process in IC Packaging Industry and Empirical Study
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Chun-Yao Wang, Yun-Chia Chen, Yi-Yu Chen, and Chen-Fu Chien
- Subjects
Wire bonding ,business.industry ,Computer science ,media_common.quotation_subject ,Process (computing) ,computer.software_genre ,Set (abstract data type) ,Empirical research ,Genetic algorithm ,New product development ,Quality (business) ,Integrated circuit packaging ,Data mining ,business ,computer ,media_common - Abstract
In the wire bonding process, different setting value of manufacturing parameters affect the quality of the solder joints and the speed of wire bonding significantly. And when a new product is introduced, it is difficult to quickly obtain effective parameters simply by relying on the experience of the engineers. The study aims to propose a data mining framework to help the IC packaging factories to increase production capacity by reducing the number of downtimes and speeding up the wire bonding time. The proposed data mining framework employed random forest and XGBoost method to classify the occurrence of defect, MARS algorithm to predict the wire bonding time, and genetic algorithm to search for the manufacturing parameters. By exploring the production data, the proposed framework finally provides a set of recommended manufacturing parameters of the second bonding process. This study cooperates with a leading assembly company in Taiwan to validate the proposed framework. The empirical result reveals that it improves the packaging yield by 0.03%. The domain engineers can also find parameters more systematically and quickly by the proposed framework.
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- 2019
41. Complicated prognostic values of CCL28 in breast cancer by subtype
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Di-He Gong, Ding Ma, Hai-Yan Chen, Kefeng Ding, Ke-Da Yu, and Yi-Yu Chen
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Oncology ,medicine.medical_specialty ,Multivariate analysis ,business.industry ,medicine.disease ,Metastasis ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Breast cancer ,Hormone receptor ,030220 oncology & carcinogenesis ,Internal medicine ,Cohort ,Medicine ,CCL28 ,Original Article ,business ,Lymph node ,Survival analysis - Abstract
BACKGROUND: The expression of CCL28 and its relationship with clinical outcomes remain unclear in the setting of heterogeneous breast cancer. The purpose of the current study was to identify the expression characteristics of chemokine CCL28 in breast cancer, with a focus on its prognostic relevance to different subtypes. METHODS: First, we investigated the expression of CCL28 in 150 breast cancer patients immunohistochemically and assessed the impact of CCL28 on relapse-free survival (RFS) in the whole cohort and different clinical subtypes [defined by hormone receptor (HR), and HER-2 status] by univariate and multivariate analysis. Furthermore, the other two cohorts comprised of 863 patients from the Cancer Genome Atlas (TCGA) database and 1,764 patients from the Kaplan-Meier plotter database, respectively, were chosen to validate the prognostic values of CCL28 in breast cancer. RESULTS: Those with positive CCL28 expression had improved RFS in luminal-like (HR positive, any HER-2 status) subtype (P=0.052) but had impaired RFS in triple-negative cases (P=0.019), after adjustment with tumor size and lymph node status. Consistently, multivariate analysis in the TCGA cohort revealed improved disease-free survival (DFS) among patients with high expression of CCL28 in luminal-like subtype (P=0.043) and decreased DFS in patients expressing high CCL28 in triple-negative cases (P=0.010). The subsequent analysis of the Kaplan-Meier plotter cohort also demonstrated that CCL28 was a favorable prognostic factor for luminal-like cases [luminal A (P
- Published
- 2019
42. Linear Epitopes Play an Important Role in the Immunoglobulin G (IgG)/Immunoglobulin E (IgE)-Binding Capacity of Scy p 4.
- Author
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Yi-Yu Chen, Meng-Si Li, Meng Liu, Xiao Yun, Fei Huan, Qing-Mei Liu, Min-Jie Cao, Gui-Xia Chen, Dong Lai, and Guang-Ming Liu
- Published
- 2021
- Full Text
- View/download PDF
43. Preparation and Properties of Solid Buoyancy Materials for Deep Sea with New Unsaturated Polyesters as Matrix
- Author
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Yi Yu Chen, Hai Yan Li, and Fang Fang Zhu
- Subjects
chemistry.chemical_classification ,Materials science ,Absorption of water ,010504 meteorology & atmospheric sciences ,Base (chemistry) ,010505 oceanography ,Mechanical Engineering ,01 natural sciences ,Polyvinyl alcohol ,Isophthalic acid ,Glass microsphere ,Polyester ,chemistry.chemical_compound ,Compressive strength ,chemistry ,Mechanics of Materials ,General Materials Science ,Itaconic acid ,Composite material ,0105 earth and related environmental sciences - Abstract
A solid buoyancy material (SBM) for deep sea was prepared with a new unsaturated polyester as the base resin, the hollow glass microspheres (HGM) as filler and some other additives. The new kind of unsaturated polyester resin (IPP-UP) was prepared with itaconic acid, isophthalic acid and propylene glycol as the raw materials, on the main chain of which the unsaturated double bonds exist as pendant groups. The hollow glass microspheres are purchased from 3M Company, USA, with the density of 0.42g/cm3 and compressive strength 55.2MPa. By adjust the amount of the hollow glass microspheres, samples of SBM for deep sea with different densities, water absorptions and compressive strengths were made. Studies have shown that, when the filling amount of HGM reaches 60% of the base resin system mass, the buoyant material exhibits excellent low density, low water absorption and high compressive strength which are 0.62g/cm3, 0.59% at 20°C for 24 hours and 67.5MPa.
- Published
- 2016
44. Investigations of the transverse vibration characteristics of piezoceramic circular plates with V-notches
- Author
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Yi-Yu Chen and Chi-Hung Huang
- Subjects
Engineering ,business.industry ,Noise reduction ,General Engineering ,Experimental validation ,Laser Doppler velocimetry ,01 natural sciences ,010309 optics ,Vibration ,Optics ,Transverse vibration ,Normal mode ,Electronic speckle pattern interferometry ,0103 physical sciences ,Sensitivity (control systems) ,business ,010301 acoustics - Abstract
This article pertains to experimental validation of the study presented in a previous paper by the same authors , in which the transverse vibration characteristics of piezoceramic circular plates with V-notches were investigated theoretically using Ritz’s method incorporating defined equivalent constants. For experimental measurement, two optical methods – amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) and laser Doppler vibrometry (LDV) – were employed to conceptualize the analytical results. The AF-ESPI method demonstrates the advantages of combining high fringe sensitivity and noise reduction, which are achieved using the time-averaged and subtraction electronic speckle pattern interferometry methods, respectively. Both vibration mode shapes and resonant frequencies of V-notched piezoceramic plates were obtained using the AF-ESPI method; in addition, the resonant frequencies were also determined quickly using the LDV method. By varying the corner angles and notch–depth...
- Published
- 2016
45. Catalytic activity and structural stability of three different Bacillus enzymes in water/organic co-solvent mixtures
- Author
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Long-Liu Lin, Tzu-Fan Wang, Yi-Yu Chen, Meng-Chun Chi, and Min-Guan Lin
- Subjects
0106 biological sciences ,0301 basic medicine ,chemistry.chemical_classification ,biology ,Dimethyl sulfoxide ,General Chemical Engineering ,General Chemistry ,biology.organism_classification ,01 natural sciences ,Enzyme assay ,Catalysis ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,Enzyme ,chemistry ,Biocatalysis ,010608 biotechnology ,biology.protein ,Dimethylformamide ,Organic chemistry ,Bacillus licheniformis ,Ethylene glycol - Abstract
Effect of various organic co-solvents on catalytic activity and structural stability of three different Bacillus enzymes, including Bacillus licheniformis γ-glutamyltranspeptidase (BlGGT) and aldehyde dehydrogenase (BlALDH), and Bacillus stearothermophilus aminopeptidase II (BsAPII) were investigated. The experimental results revealed that almost all co-solvents had a detrimental effect on catalytic activity and molecular structure of enzymes at high concentrations. Acetonitrile and dimethylformamide caused a highest degree of enzyme inactivation; however, other more hydrophilic co-solvents, such as ethylene glycol and dimethyl sulfoxide, were better tolerated. High residual activity of BlGGT was obtained in the majority of organic co-solvents tested, but catalytic activities of BlALDH and BsAPII were significantly decreased by the respective concentrations of the same co-solvents. Collectively, the favorable influence of these co-solvents on both catalytic activity and structural stability of BlGGT makes this enzyme more suitable for biocatalytic applications.
- Published
- 2016
46. Effect of surface fields on the dynamic resistance of planar HgCdTe mid-wavelength infrared photodiodes.
- Author
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Kai He, Song-Min Zhou, Yang Li, Xi Wang, Peng Zhang, Yi-Yu Chen, Xiao-Hui Xie, Chun Lin, Zhen-Hua Ye, Jian-Xin Wang, and Qin-Yao Zhang
- Subjects
PHOTODIODES ,ELECTRIC lines ,ELECTRON mobility ,DARK currents (Electric) ,PHOTOCONDUCTING devices - Abstract
This work investigates the effect of surface fields on the dynamic resistance of a planar HgCdTe mid-wavelength infrared photodiode from both theoretical and experimental aspects, considering a gated n-on-p diode with the surface potential of its p-region modulated. Theoretical models of the surface leakage current are developed, where the surface tunnelling current in the case of accumulation is expressed by modifying the formulation of bulk tunnelling currents, and the surface channel current for strong inversion is simulated with a transmission line method. Experimental data from the fabricated devices show a flat-band voltage of V
FB = -5.7 V by capacitance-voltage measurement, and then the physical parameters for bulk properties are determined from the resistance-voltage characteristics of the diode working at a flat-band gate voltage. With proper values of the modeling parameters such as surface trap density and channel electron mobility, the theoretical R0 A product and corresponding dark current calculated from the proposed model as functions of the gate voltage Vg demonstrate good consistency with the measured values. The R0 A product remarkably degenerates when Vg is far below or above VFB because of the surface tunnelling current or channel current, respectively; and it attains the maximum value of 5:7 x 107 Ω ⋅ cm² around the transition between surface depletion and weak inversion when Vg ≈ -4 V, which might result from reduced generation-recombination current. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
47. High-level expression and molecular characterization of a recombinant prolidase from Escherichia coli NovaBlue
- Author
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Huei-Fen Lo, Kuan-Ling Lai, Min-Guan Lin, Long-Liu Lin, Tzu-Fan Wang, Yi-Yu Chen, and Meng-Chun Chi
- Subjects
0301 basic medicine ,Prolidase ,Metallopeptidase ,030106 microbiology ,lcsh:Medicine ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,chemistry.chemical_compound ,medicine ,Escherichia coli ,Denaturation (biochemistry) ,Chaotropic agent-induced denaturation ,Enzyme kinetics ,Guanidine ,Gel electrophoresis ,Chromatography ,Molecular mass ,Chemistry ,General Neuroscience ,lcsh:R ,General Medicine ,Molecular characterization ,030104 developmental biology ,Gene expression ,General Agricultural and Biological Sciences ,Organic co-solvents ,Ethylene glycol - Abstract
Long-term use of organophosphorus (OP) compounds has become an increasing global problem and a major threat to sustainability and human health. Prolidase is a proline-specific metallopeptidase that can offer an efficient option for the degradation of OP compounds. In this study, a full-length gene fromEscherichia coliNovaBlue encoding a prolidase (EcPepQ) was amplified and cloned into the commercially-available vector pQE-30 to yield pQE-EcPepQ. The overexpressed enzyme was purified from the cell-free extract of isopropyl thio-β-D-galactoside IPTG-inducedE. coliM15 (pQE-EcPepQ) cells by nickel-chelate chromatography. The molecular mass ofEcPepQ was determined to be about 57 kDa by 12% sodium dodecyl sulfate–polyacrylamide gel electrophoresis and the result of size-exclusion chromatography demonstrated that the enzyme was mainly present in 25 mM Tris–HCl buffer (pH 8.0) as a dimeric form. The optimal conditions forEcPepQ activity were 60 °C, pH 8.0, and 0.1 mM Mn2+ion. Kinetic analysis with Ala-Pro as the substrate showed that theKmandkcatvalues ofEcPepQ were 8.8 mM and 926.5 ± 2.0 s−1, respectively. The thermal unfolding ofEcPepQ followed a two-state process with one well-defined unfolding transition of 64.2 °C. Analysis of guanidine hydrochloride (GdnHCl)-induced denaturation by tryptophan emission fluorescence spectroscopy revealed that the enzyme had a [GdnHCl]0.5,N-Uvalue of 1.98 M. The purified enzyme also exhibited some degree of tolerance to various water/organic co-solvents. Isopropanol and tetrahydrofuran were very detrimental to the enzymatic activity ofEcPepQ; however, other more hydrophilic co-solvents, such as formamide, methanol, and ethylene glycol, were better tolerated. Eventually, the non-negative influence of some co-solvents on both catalytic activity and structural stability ofEcPepQ allows to adjust the reaction conditions more suitable forEcPepQ-catalyzed bioprocess.
- Published
- 2018
48. Two-Tuple Linguistic Information in Group Decision-Making Problem
- Author
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Hong Yu Guan, Yi Yu Chen, and Xian Chen Zhu
- Subjects
Degree (graph theory) ,business.industry ,Weighted average operator ,General Medicine ,Machine learning ,computer.software_genre ,Preference ,Ranking (information retrieval) ,Group decision-making ,Rule-based machine translation ,Artificial intelligence ,Tuple ,business ,computer ,Natural language processing ,Mathematics - Abstract
In this paper, we study the group decision making (GDM) problem with two-tuple linguistic information .we propose a way to calculate the comprehensive assessment information. Then average preference degree of one alternative over all the other alternatives is calculated. Thus, the ranking of alternatives is obtained by the comparison of linguistic two-tuple information.
- Published
- 2015
49. Chemical constituents and cytotoxic activities from the root of Cryptocarya concinna
- Author
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Chun-Nan Lin, I-Sen Chen, Chyi-Jia Wang, Yi-Yu Chen, and Hsun-Shuo Chang
- Subjects
Traditional medicine ,Chemical engineering ,Chemistry ,Chemical constituents ,Cryptocarya concinna - Published
- 2017
50. Long-term effectiveness of the Diabetes Conversation Map Program: A prepost education intervention study among type 2 diabetic patients in Taiwan
- Author
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Tzung Yi Tsai, Yi Yu Chen, How Ran Guo, Hanoch Livneh, Pin Fan Chen, and Jui Yu Hung
- Subjects
Research design ,Adult ,Blood Glucose ,Male ,medicine.medical_specialty ,Time Factors ,Psychological intervention ,Taiwan ,effectiveness ,030209 endocrinology & metabolism ,Health literacy ,diabetes conversation map program ,Body Mass Index ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Patient Education as Topic ,Diabetes mellitus ,Surveys and Questionnaires ,Quality Improvement Study ,Medicine ,Humans ,030212 general & internal medicine ,Aged ,Aged, 80 and over ,Glycated Hemoglobin ,business.industry ,Depression ,Medical record ,General Medicine ,Middle Aged ,medicine.disease ,Self Care ,Treatment Outcome ,chemistry ,generalized estimating equation ,Diabetes Mellitus, Type 2 ,diabetes mellitus ,Physical therapy ,Health education ,Female ,Glycated hemoglobin ,business ,Body mass index ,Research Article - Abstract
Health education is compulsory for patients with chronic and life-threatening disease, especially for those with diabetes mellitus (DM). This study aimed to examine the long-term effectiveness of the Diabetes Conversation Map Program (DCMP) among DM patients in Taiwan. A quasi-experimental research design using convenience sampling and nonrandom group assignment was applied to recruit 95 type 2 diabetic subjects from a hospital in Taiwan. In addition to routine care, the experiment group (n = 49) received 7 sessions of DCMP that delivered over 2 months, while the control group (n = 46) received only routine care during the same period. We conducted structured questionnaire survey and reviewed medical record at 3 time points (before DCMP, 3 days after DCMP, and 3 months after DCMP completion) to collect the effectiveness data. The effectiveness was determined using the generalized estimating equation model. We found that improvements in the body mass index, blood glucose, glycated hemoglobin, self-monitoring of blood glucose, and diabetic health literacy in the DCMP group compared with controls (all P values
- Published
- 2017
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